You searched for subject:(stream network)
.
Showing records 1 – 30 of
67 total matches.
◁ [1] [2] [3] ▶
1.
Tikhonova, Anna.
A Synchronisation Facility for a Stream Processing Coordination Language.
Degree: 2015, University of Hertfordshire
URL: http://hdl.handle.net/2299/16341
► In this thesis we present the AstraKahn project that aims to provide environment for stream processing applications with an automatic resource and concurrency management based…
(more)
▼ In this thesis we present the AstraKahn project that aims to provide environment for stream processing applications with an automatic resource and concurrency management based on communication demand. At the moment the work on the thesis started, the project
was at an early stage and there existed no software implementation. The aim of my work is to implement a stream synchronisation facility called synchroniser which is a part of the AstraKahn concept. Synchronisers are programmed in a dedicated language. The thesis focuses on the implementation of the language compiler to be integrated into the runtime system prototype being developed in parallel. AstraKahn structures streaming networks using a xed set of wiring patterns, including the
serial replication. This pattern dynamically replicates its operand network conceptually in nitely many times and wires the replicas in a chain. AstraKahn provides an approach to extract messages from the chain based on the concept of xed point. The thesis explores
the role of synchronisers in forming from a serial replication pipeline.
Subjects/Keywords: coordination language; process network; stream processing; stream synchronisation; compiler
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tikhonova, A. (2015). A Synchronisation Facility for a Stream Processing Coordination Language. (Masters Thesis). University of Hertfordshire. Retrieved from http://hdl.handle.net/2299/16341
Chicago Manual of Style (16th Edition):
Tikhonova, Anna. “A Synchronisation Facility for a Stream Processing Coordination Language.” 2015. Masters Thesis, University of Hertfordshire. Accessed April 13, 2021.
http://hdl.handle.net/2299/16341.
MLA Handbook (7th Edition):
Tikhonova, Anna. “A Synchronisation Facility for a Stream Processing Coordination Language.” 2015. Web. 13 Apr 2021.
Vancouver:
Tikhonova A. A Synchronisation Facility for a Stream Processing Coordination Language. [Internet] [Masters thesis]. University of Hertfordshire; 2015. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/2299/16341.
Council of Science Editors:
Tikhonova A. A Synchronisation Facility for a Stream Processing Coordination Language. [Masters Thesis]. University of Hertfordshire; 2015. Available from: http://hdl.handle.net/2299/16341

Texas A&M University
2.
Liu, Ying.
Hydro-geomorphological Attributes and Distribution of Urban Land and Population in River Basins.
Degree: PhD, Water Management and Hydrological Science, 2016, Texas A&M University
URL: http://hdl.handle.net/1969.1/158100
► Global urbanization is a major trend in the 21st century and imposes a significant impact on the hydrologic cycle, climate, and biodiversity. In particular, Asia…
(more)
▼ Global urbanization is a major trend in the 21st century and imposes a significant impact on the hydrologic cycle, climate, and biodiversity. In particular, Asia and Africa are expected to experience the fastest urbanization rate in the following decade, manifested by impervious land cover construction and urban population growth. Therefore, accurate information on spatial distribution of urban land and population at the present stage can attribute to a better understanding of urbanization processes in the future. Meanwhile, the knowledge of hydrological responses on the land use and land cover (LULC) change can provide valuable insights into sustainable development strategies.
This dissertation aims to answer three fundamental questions: (1) How do natural environmental factors that relate to water resource, climate, and geomorphological attributes constrain the distribution of current urban land and population? (2) How will the global urban growth in the near future affect the urban exposure to natural disasters such as fluvial flood, drought, and ecosystem degradation? (3) How will land change impact hydrologic processes within a river basin?
To solve the research questions, studies presented in this dissertation are organized into three parts. Part one analyzes the spatial distribution of urban ratio, population density, and urban population density in 11 river basins in Asia and Africa, considering average annual precipitation, surface freshwater availability, and access to coastal zone as three influencing factors. Then, a set of regression models is conducted for the Yangtze River Basin as a more comprehensive investigation. Part two examines the global and regional patterns of urban growth from 2000 to 2030 as well as the change of urban area’s exposure to floods and droughts. Part three is an assessment of streamflow in the Chao Phraya Basin based on different precipitation and LULC scenarios. The Soil and Water Assessment Tool (SWAT) is used to develop the hydrological model.
The results reveal that higher urban ratio and human concentration occur in the vicinity of a
stream network and a coastal zone; while precipitation does not effectively influence the distribution of urban land and population as expected. The emerging coastal metropolitan regions in Africa and Asia will be larger than those in the developed countries and will have larger areas exposed to flood and drought. The case study of Chao Phraya River Basin demonstrates that land change will increase both the risk of drought and flood hazards.
Advisors/Committee Members: Guneralp, Inci (advisor), Guneralp, Burak (committee member), Filippi, Anthony (committee member), Gao, Huilin (committee member), Giardino, John Rick (committee member).
Subjects/Keywords: Stream network; cost distance; urbanization; SWAT model
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Liu, Y. (2016). Hydro-geomorphological Attributes and Distribution of Urban Land and Population in River Basins. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/158100
Chicago Manual of Style (16th Edition):
Liu, Ying. “Hydro-geomorphological Attributes and Distribution of Urban Land and Population in River Basins.” 2016. Doctoral Dissertation, Texas A&M University. Accessed April 13, 2021.
http://hdl.handle.net/1969.1/158100.
MLA Handbook (7th Edition):
Liu, Ying. “Hydro-geomorphological Attributes and Distribution of Urban Land and Population in River Basins.” 2016. Web. 13 Apr 2021.
Vancouver:
Liu Y. Hydro-geomorphological Attributes and Distribution of Urban Land and Population in River Basins. [Internet] [Doctoral dissertation]. Texas A&M University; 2016. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/1969.1/158100.
Council of Science Editors:
Liu Y. Hydro-geomorphological Attributes and Distribution of Urban Land and Population in River Basins. [Doctoral Dissertation]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/158100

Virginia Tech
3.
Zhou, Xiaobo.
Fractal and Multifractal Analysis of Runoff Time Series and Stream Networks in Agricultural Watersheds.
Degree: PhD, Crop and Soil Environmental Sciences, 2011, Virginia Tech
URL: http://hdl.handle.net/10919/11287
► The usefulness of watershed hydrological process models is considerably increased when they can be extrapolated across spatial and temporal scales. This scale transfer problem, meaning…
(more)
▼ The usefulness of watershed hydrological process models is considerably increased when they can be extrapolated across spatial and temporal scales. This scale transfer problem, meaning the description and prediction of characteristics and processes at a scale different from the one at which observations and measurements are made, and has become the
subject of much current research in hydrology and other areas. Quantitative description of fractal scaling behavior of runoff and
stream network morphometry in agricultural watersheds has not been previously reported.
In the present study, fractal and multifractal scaling of daily runoff rate in four experimental agricultural watersheds and their associated sub-watersheds (32 in total) were investigated. The time series of daily runoff rate were obtained from the database (comprising about 16,600 station years of rainfall and runoff data for small agricultural watersheds across the U.S.) developed by the Hydrological and Remote Sensing Laboratory, Agricultural Research Service, US Department of Agriculture (HRSL/ARS/USDA). Fractal scaling patterns of the Digital Elevation Model (DEM)-extracted
stream network morphometry for these four watersheds were also examined. The morphometry of
stream networks of four watersheds were obtained by Geographic Information System (GIS) manipulation of digital elevation data downloaded from the most recent (July 2004) U.S. Geological Survey (USGS) National Elevation Dataset (NED). Several threshold values of contribution area for
stream initiation were used to extract
stream networks for each of the four watersheds.
The principal measures of fractal scaling determined for the runoff series were the Hurst exponent obtained by rescaled range (R/S) analysis, the fractal dimension estimated by the shifted box-counting method, and the multifractal scaling function parameters (a and C1) of the Universal Multifractal Model (UMM). Corresponding measures for the DEM-extracted
stream networks at each threshold value were the fractal dimension estimated using the box-counting technique and the Horton ratios of the
network.
Daily runoff rate exhibited strong long-term dependence and scale invariance over certain time scales. The same fractal dimensions and Hurst exponents were obtained for the sub-watersheds within each watershed. Runoff exhibited multifractal behavior that was well described by UMM. The multifractal parameters a (quantifies how far the process is from monofractality) and C1 (characterizes the sparseness or inhomogeneity of the mean of the process) were reasonably close to each other for sub-watersheds within a watershed and were generally similar among four watersheds.
For the DEM-extracted networks, the morphometric attributes and Horton ratios as well as their fractal dimensions were dependent on the threshold values of contribution area used in the extraction process. The fractal dimensions were almost identical for DEM-extracted
stream networks of the four watersheds. The DEM-extracted
stream network displayed a…
Advisors/Committee Members: Persaud, Naraine (committeechair), Clark, Ralph (committee member), Pachepsky, Yakov (committee member), Heatwole, Conrad D. (committee member), Alley, Marcus M. (committee member).
Subjects/Keywords: Fractal; Multifractal; Scaling; Stream Network; unoff
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zhou, X. (2011). Fractal and Multifractal Analysis of Runoff Time Series and Stream Networks in Agricultural Watersheds. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/11287
Chicago Manual of Style (16th Edition):
Zhou, Xiaobo. “Fractal and Multifractal Analysis of Runoff Time Series and Stream Networks in Agricultural Watersheds.” 2011. Doctoral Dissertation, Virginia Tech. Accessed April 13, 2021.
http://hdl.handle.net/10919/11287.
MLA Handbook (7th Edition):
Zhou, Xiaobo. “Fractal and Multifractal Analysis of Runoff Time Series and Stream Networks in Agricultural Watersheds.” 2011. Web. 13 Apr 2021.
Vancouver:
Zhou X. Fractal and Multifractal Analysis of Runoff Time Series and Stream Networks in Agricultural Watersheds. [Internet] [Doctoral dissertation]. Virginia Tech; 2011. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/10919/11287.
Council of Science Editors:
Zhou X. Fractal and Multifractal Analysis of Runoff Time Series and Stream Networks in Agricultural Watersheds. [Doctoral Dissertation]. Virginia Tech; 2011. Available from: http://hdl.handle.net/10919/11287
4.
Gazendam, Edward.
The Application of Fuzzy Logic, Multiple Linear Regression and Artificial Neural Networks for Stream Assessment, Design and Monitoring.
Degree: PhD, School of Engineering, 2017, University of Guelph
URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/10259
► The applicability of the Qualitative Habitat Evaluation Index (QHEI) as a planning and design tool to restore streams in Southern Ontario was evaluated. QHEI assessments…
(more)
▼ The applicability of the Qualitative Habitat Evaluation Index (QHEI) as a planning and design tool to restore streams in Southern Ontario was evaluated. QHEI assessments were made at 50 Ontario sites and correlated to %EPT, HBI and Taxa Richness. QHEI reference ranges of >67.5, 52.5 to 67.5 and <52.5 were determined for Exceptional, Good and Marginal/Poor habitats respectively. Predictive regression equations were developed for
stream assessment and rehabilitation design. However, only about 50% of the variance in biologic indices was explained by geomorphic stressors within the
stream. Artificial Neural
Network (ANN) models were developed to integrate complex non-linear relationships between aquatic indices and key watershed-scale and reach-scale parameters. Data were collected at 112 sites on 62
stream systems located in Southern Ontario. Benthic data were collected separately for HBI and Richness. The ANN models were trained on the randomly selected 1/4 of the dataset of 112 streams in Ontario, Canada and validated on the remaining 3/4. The R2 values were 0.86 for HBI and 0.92 for Richness. Sensitivity analysis revealed that Richness was directly proportional to Erosion and Riparian Width and inversely proportional to Floodplain Quality and Substrate parameters. HBI was directly proportional to Velocity Types and Erosion and inversely proportional to Substrate, % Treed and 1:2 Year Flood Flow parameters. Finally, the Ontario Channel Susceptibility Methodology (OCSM) provides quantitative assessment of the factors influencing channel-habitat quality and the sensitivity of
stream channels to deterioration when
subject to increased stormwater flows. A risk-based, Fuzzy Logic methodology integrated a broad spectrum of in-channel, near-channel, and watershed-surface data sets to rank
stream susceptibility. The methodology was applied to Grindstone Creek and Highland Creek, two channel systems with varying susceptibility to the effects of hydrology, water quality and physical conditions. Results show that Highland Creek has a greater risk of deterioration than Grindstone Creek when
subject to enhanced stormwater flows. OCSM was determined to be an effective tool for evaluating and prioritizing
stream channels. Further data collection and research is required to ensure that appropriate QHEI design ranges and ANN modelling is completed for higher resolution biogeographical areas.
Advisors/Committee Members: Gharabaghi, Bahram (advisor).
Subjects/Keywords: QHEI; Artificial Neural Network; Multiple Linear Regression; Fuzzy Logic; Stream Assessment; Stream Restoration
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gazendam, E. (2017). The Application of Fuzzy Logic, Multiple Linear Regression and Artificial Neural Networks for Stream Assessment, Design and Monitoring. (Doctoral Dissertation). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/10259
Chicago Manual of Style (16th Edition):
Gazendam, Edward. “The Application of Fuzzy Logic, Multiple Linear Regression and Artificial Neural Networks for Stream Assessment, Design and Monitoring.” 2017. Doctoral Dissertation, University of Guelph. Accessed April 13, 2021.
https://atrium.lib.uoguelph.ca/xmlui/handle/10214/10259.
MLA Handbook (7th Edition):
Gazendam, Edward. “The Application of Fuzzy Logic, Multiple Linear Regression and Artificial Neural Networks for Stream Assessment, Design and Monitoring.” 2017. Web. 13 Apr 2021.
Vancouver:
Gazendam E. The Application of Fuzzy Logic, Multiple Linear Regression and Artificial Neural Networks for Stream Assessment, Design and Monitoring. [Internet] [Doctoral dissertation]. University of Guelph; 2017. [cited 2021 Apr 13].
Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/10259.
Council of Science Editors:
Gazendam E. The Application of Fuzzy Logic, Multiple Linear Regression and Artificial Neural Networks for Stream Assessment, Design and Monitoring. [Doctoral Dissertation]. University of Guelph; 2017. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/10259

Penn State University
5.
Brubaker, Kristen Marie.
MULTI-SCALE LIDAR-BASED APPROACHES TO CHARACTERIZING STREAM NETWORKS, SURFACE ROUGHNESS AND LANDFORMS OF FOREST WATERSHEDS.
Degree: 2011, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/12424
► The overall objective of this study is to utilize high resolution lidar-derived digital elevation models (DEMs) to improve classification and understanding of forested watersheds. Since…
(more)
▼ The overall objective of this study is to utilize high resolution lidar-derived digital elevation models (DEMs) to improve classification and understanding of forested watersheds. Since geographic information systems technology became broadly used in natural resource fields in the 1980s, scientists have used digital elevation models to study aspects of forested ecosystems including the delineation of drainage networks, geomorphic modeling, and ecological classification for forest management and ecosystem management. With recently available lidar elevation data, we have improved our ability to “see” features on the landscape by orders of magnitude. Existing methodologies for assessing geomorphometry and hydrologic
network delineation across the landscape may not suffice for all tasks. By taking a multi-scale, multidisciplinary approach, we can improve our understanding of headwater ecosystems and how to assess and predict the relationship between terrain and vegetation. This research was performed in the Leading Ridge experimental watersheds, the site of a long-term study analyzing the impact of forest management practices on
stream water quality. The Leading Ridge experimental watersheds are also located within the Susquehanna/Shale Hills Critical Zone Observatory.
In order to assess the ability of lidar-derived DEM to improve
stream network modeling, the
stream network for Leading Ridge watershed number one was recorded using a GPS unit during base flow conditions. The
stream network was then modeled using lidar-derived 1 m, 3 m, and 10 m resolution DEMs as well as photogrammetrically-derived NED (National Elevation Dataset) DEM. All of the lidar-derived DEMs resulted in a relatively accurate
stream network model, with the 3 m DEM providing the most accurate model. There was no significant difference between any of the lidar-derived modeled
stream networks, but they were all significantly different from the NED DEM-derived
stream network, which was much less accurate. Topographic index (TI) was modeled using multiple DEM products and presented very different statistical distributions and spatial patterns. The distribution of TI could have an impact on hydrologic models, while the improvements in
network delineation could substantially improve our knowledge of headwater streams on the landscape. This could in part impact forest management, site planning, and ecosystem modeling.
Surface roughness was calculated for Leading Ridge using several algorithms on two different lidar-derived DEMs to evaluate patterns of roughness on the watershed. Roughness metrics included standard deviation of slope, value of pittedness in cells, standard deviation of curvature, and the difference between the original DEM and a splined surface. Micro-plots and transects were surveyed to ground truth roughness metrics. Although the scale of the 1 m DEM was too coarse to assess micro-topography at the same scale as the ground survey, unique patterns were identified on different landforms and soil types. There was also substantial…
Advisors/Committee Members: Wayne Lawrence Myers, Dissertation Advisor/Co-Advisor, Wayne Lawrence Myers, Committee Chair/Co-Chair, Elizabeth Weeks Boyer, Committee Chair/Co-Chair, Douglas Miller, Committee Member, Patrick Joseph Drohan, Committee Member, Eric Zenner, Committee Member.
Subjects/Keywords: lidar; terrain analysis; forest classification; microtopography; stream network delineation
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Brubaker, K. M. (2011). MULTI-SCALE LIDAR-BASED APPROACHES TO CHARACTERIZING STREAM NETWORKS, SURFACE ROUGHNESS AND LANDFORMS OF FOREST WATERSHEDS. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/12424
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Brubaker, Kristen Marie. “MULTI-SCALE LIDAR-BASED APPROACHES TO CHARACTERIZING STREAM NETWORKS, SURFACE ROUGHNESS AND LANDFORMS OF FOREST WATERSHEDS.” 2011. Thesis, Penn State University. Accessed April 13, 2021.
https://submit-etda.libraries.psu.edu/catalog/12424.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Brubaker, Kristen Marie. “MULTI-SCALE LIDAR-BASED APPROACHES TO CHARACTERIZING STREAM NETWORKS, SURFACE ROUGHNESS AND LANDFORMS OF FOREST WATERSHEDS.” 2011. Web. 13 Apr 2021.
Vancouver:
Brubaker KM. MULTI-SCALE LIDAR-BASED APPROACHES TO CHARACTERIZING STREAM NETWORKS, SURFACE ROUGHNESS AND LANDFORMS OF FOREST WATERSHEDS. [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Apr 13].
Available from: https://submit-etda.libraries.psu.edu/catalog/12424.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Brubaker KM. MULTI-SCALE LIDAR-BASED APPROACHES TO CHARACTERIZING STREAM NETWORKS, SURFACE ROUGHNESS AND LANDFORMS OF FOREST WATERSHEDS. [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/12424
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Guelph
6.
Peirce, Sarah.
Characterization of Ephemeral Streams Using Electrical Resistance Sensors in a Southern Ontario Watershed.
Degree: MS, Department of Geography, 2012, University of Guelph
URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3692
► Ephemeral streams are small headwater streams that only experience streamflow in response to a precipitation event. Due to their highly complex and dynamic spatial and…
(more)
▼ Ephemeral streams are small headwater streams that only experience streamflow in response to a precipitation event. Due to their highly complex and dynamic spatial and temporal nature, ephemeral streams have been difficult to monitor and are in general poorly understood. This research implemented an extensive
network of recently developed electrical resistance sensors to monitor ephemeral streamflow in a Southern Ontario watershed, located in Guelph, Ontario. From this data, patterns of
stream network expansion and contraction were determined. Further analysis examined a series of spatial and temporal variables that were monitored to explain the occurrence of ephemeral channel activity through binary logistic regression. The results suggest that the most common patterns of
network expansion and contraction at the study site are incomplete coalescence and disintegration, respectively. Analysis of the primary controls on ephemeral streamflow showed only weak relationships, suggesting that there are more complex processes at work in these ephemeral streams. This research has implications for improving ephemeral streamflow monitoring in the future, which will be important for developing and implementing meaningful conservation and management strategies.
Advisors/Committee Members: Lindsay, John (advisor).
Subjects/Keywords: ephemeral; stream network; electrical resistance sensor; headwaters; hydrological processes
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Peirce, S. (2012). Characterization of Ephemeral Streams Using Electrical Resistance Sensors in a Southern Ontario Watershed. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3692
Chicago Manual of Style (16th Edition):
Peirce, Sarah. “Characterization of Ephemeral Streams Using Electrical Resistance Sensors in a Southern Ontario Watershed.” 2012. Masters Thesis, University of Guelph. Accessed April 13, 2021.
https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3692.
MLA Handbook (7th Edition):
Peirce, Sarah. “Characterization of Ephemeral Streams Using Electrical Resistance Sensors in a Southern Ontario Watershed.” 2012. Web. 13 Apr 2021.
Vancouver:
Peirce S. Characterization of Ephemeral Streams Using Electrical Resistance Sensors in a Southern Ontario Watershed. [Internet] [Masters thesis]. University of Guelph; 2012. [cited 2021 Apr 13].
Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3692.
Council of Science Editors:
Peirce S. Characterization of Ephemeral Streams Using Electrical Resistance Sensors in a Southern Ontario Watershed. [Masters Thesis]. University of Guelph; 2012. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3692

Brunel University
7.
Harwood, Nathanael.
Using Bayesian networks to investigate the role of Arctic variability in midlatitude circulation.
Degree: PhD, 2020, Brunel University
URL: http://bura.brunel.ac.uk/handle/2438/21649
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.824189
► Recent enhanced warming and sea ice depletion in the Arctic have been put forward as potential drivers of severe weather in the midlatitudes. Evidence of…
(more)
▼ Recent enhanced warming and sea ice depletion in the Arctic have been put forward as potential drivers of severe weather in the midlatitudes. Evidence of a link between Arctic warming and midlatitude atmospheric circulation is growing, but the role of Arctic processes relative to other drivers remains unknown. Arctic-midlatitude connections in the North Atlantic region are particularly complex but important due to the frequent occurrence of severe winters in recent decades. Here, Dynamic Bayesian Networks with hidden variables are introduced to the field to assess their suitability for teleconnection analyses. Climate networks are constructed to analyse North Atlantic circulation variability at 5-day to monthly timescales during the winter months of the years 1981-2018. The inclusion of a number of Arctic, midlatitude and tropical variables allows for an investigation into the relative role of Arctic Amplification as a driver compared to internal atmospheric variability and other remote drivers. A robust covariability between regions of amplified Arctic warming and two definitions of midlatitude circulation is found to occur entirely within winter at submonthly timescales. Hidden variables incorporated in networks capture periodic shifts between average and anomalously slow stratospheric polar vortex flow. An increase in predictive skill is achieved with the inclusion of hidden variables, but a number of caveats to their usage are demonstrated. The influence of the Barents-Kara Seas region on the North Atlantic Oscillation is found to be the strongest link at 5- and 10-day averages, whilst the stratospheric polar vortex strongly influences jet variability on monthly timescales.
Subjects/Keywords: Arctic amplification; jet stream; teleconnection; arctic-midlatitude weather linkages; climate network
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Harwood, N. (2020). Using Bayesian networks to investigate the role of Arctic variability in midlatitude circulation. (Doctoral Dissertation). Brunel University. Retrieved from http://bura.brunel.ac.uk/handle/2438/21649 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.824189
Chicago Manual of Style (16th Edition):
Harwood, Nathanael. “Using Bayesian networks to investigate the role of Arctic variability in midlatitude circulation.” 2020. Doctoral Dissertation, Brunel University. Accessed April 13, 2021.
http://bura.brunel.ac.uk/handle/2438/21649 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.824189.
MLA Handbook (7th Edition):
Harwood, Nathanael. “Using Bayesian networks to investigate the role of Arctic variability in midlatitude circulation.” 2020. Web. 13 Apr 2021.
Vancouver:
Harwood N. Using Bayesian networks to investigate the role of Arctic variability in midlatitude circulation. [Internet] [Doctoral dissertation]. Brunel University; 2020. [cited 2021 Apr 13].
Available from: http://bura.brunel.ac.uk/handle/2438/21649 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.824189.
Council of Science Editors:
Harwood N. Using Bayesian networks to investigate the role of Arctic variability in midlatitude circulation. [Doctoral Dissertation]. Brunel University; 2020. Available from: http://bura.brunel.ac.uk/handle/2438/21649 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.824189
8.
Milesi, Silvia Vendruscolo.
Influência da posição espacial de pequenos tributários e de confluências sobre a assembleia de insetos aquáticos.
Degree: 2012, Brazil
URL: http://hdl.handle.net/10183/69718
► Os ecossistemas de rios apresentam uma estrutura distinta, onde riachos menores deságuam em rios maiores formando uma rede fluvial dendrítica. Porém, poucos trabalhos realizados em…
(more)
▼ Os ecossistemas de rios apresentam uma estrutura distinta, onde riachos menores deságuam em rios maiores formando uma rede fluvial dendrítica. Porém, poucos trabalhos realizados em ecossistemas lóticos consideram a estrutura dendrítica das bacias hidrográficas. A natureza dessas redes de riachos, com tributários e confluências, influencia a ocupação e a dispersão dos organismos aquáticos. Neste trabalho, estudei os efeitos da posição do tributário dentro da bacia hidrográfica e de confluências sobre a assembleia de insetos aquáticos. Quanto ao efeito da posição do tributário, testei a hipótese de que: i) a assembleia de insetos aquáticos em pequenos tributários que fluem para outro pequeno tributário (P –> P) diferem dos pequenos tributários que deságuam em grandes rios (P–>G) e ii) que a fauna de P–>P é um subconjunto aninhado da fauna do P–>G da mesma bacia hidrográfica. Em relação às confluências,
independentemente da sua posição na bacia, hipotetizei que trechos antes da confluência terão fauna iii) distinta e iv) aninhada em relação aos trechos após a confluência. O trabalho foi realizado em nove microbacias em São José dos Ausentes (RS). Em cada uma foram obtidas amostras em dois tipos de riachos pequenos: aqueles que deságuam em rio de porte semelhante e aqueles que deságuam em rio maior e nas confluências em trechos antes e após. Indivíduos de Ephemeroptera, Plecoptera, Trichoptera e Elmidae (Coleoptera) foram coletados com amostrador Surber e identificados até o menor nível taxonômico possível. A riqueza de espécies rarefeita foi calculada e comparada a partir de teste t pareado unicaudal, onde cada microbacia constituiu um par. Análise de Variância Multivariada baseada em distância foi feita para avaliar se a composição e estrutura da fauna de insetos aquáticos diferem entre os tipos de riachos. Foram realizadas Análises de Coordenadas Principais para avaliar a
distribuição das assembleias nos trechos coletados e Análise de Aninhamento usando a métrica NODF(Nestedness metric based on Overlapping and Decreasing Fill). Foram identificados 13.441 organismos, distribuídos em 65 gêneros e 121 morfoespécies. Os tributários que deságuam no rio maior apresentaram maior riqueza e composição distinta dos riachos que deságuam em rios de ordem menor. Além disto, riachos tributários nas regiões altas apresentaram uma fauna aninhada dentro dos tributários das regiões baixas. Quanto às confluências, apenas aquelas localizadas nas áreas altas das bacias hidrográficas tiveram efeito sobre a composição e estrutura da assembleia. Concluímos que a localização de tributários de pequena ordem na bacia hidrográfica é de fundamental importância para a determinação da riqueza e estrutura da fauna de insetos aquáticos. As assembleias de organismos aquáticos são moldadas pelas características dendríticas da rede de drenagem das bacias hidrográficas, onde a posição
dos tributários e as confluências são elementos fundamentais para o entendimento de como funciona a organização e a distribuição das assembleias na paisagem.
Riverine…
Advisors/Committee Members: Melo, Adriano Sanches.
Subjects/Keywords: Invertebrados bentônicos; Rios; Stream dendritic network; Nestedness; Benthic invertebrate
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Milesi, S. V. (2012). Influência da posição espacial de pequenos tributários e de confluências sobre a assembleia de insetos aquáticos. (Masters Thesis). Brazil. Retrieved from http://hdl.handle.net/10183/69718
Chicago Manual of Style (16th Edition):
Milesi, Silvia Vendruscolo. “Influência da posição espacial de pequenos tributários e de confluências sobre a assembleia de insetos aquáticos.” 2012. Masters Thesis, Brazil. Accessed April 13, 2021.
http://hdl.handle.net/10183/69718.
MLA Handbook (7th Edition):
Milesi, Silvia Vendruscolo. “Influência da posição espacial de pequenos tributários e de confluências sobre a assembleia de insetos aquáticos.” 2012. Web. 13 Apr 2021.
Vancouver:
Milesi SV. Influência da posição espacial de pequenos tributários e de confluências sobre a assembleia de insetos aquáticos. [Internet] [Masters thesis]. Brazil; 2012. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/10183/69718.
Council of Science Editors:
Milesi SV. Influência da posição espacial de pequenos tributários e de confluências sobre a assembleia de insetos aquáticos. [Masters Thesis]. Brazil; 2012. Available from: http://hdl.handle.net/10183/69718

AUT University
9.
Sabit, Hakilo.
Distributed incremental data stream mining for wireless sensor network
.
Degree: 2013, AUT University
URL: http://hdl.handle.net/10292/5258
► Wireless sensor networks (WSNs) despite their energy, bandwidth, storage, and computational power constraints, have embraced dynamic applications. These applications generate a large amount of data…
(more)
▼ Wireless sensor networks (WSNs) despite their energy, bandwidth, storage, and computational power constraints, have embraced dynamic applications. These applications generate a large amount of data continuously at high speeds and at distributed locations, known as distributed data
stream. In these applications, processing data streams on the fly and in distributed locations is necessary mainly due to three reasons. Firstly, the large volume of data that these systems generate is beyond the storage capacity of the system. Secondly, transmitting such large continuous data to a central processing location over the air exhausts the energy of the system rapidly and limits its lifetime. Thirdly, these applications implement dynamic models that are triggered immediately in response to events such as changes in the environment or changes in set of conditions and hence, do not tolerate offline processing. Therefore, it is important to design efficient distributed techniques for WSN data
stream mining applications under these inherent constraints.
The purpose of this study was to develop a resource efficient online distributed incremental data
stream mining framework for WSNs. The framework must minimize inter-node communications and optimize local computation and energy efficiency without compromising practical application requirements and quality of service (QoS). The objectives were to address the WSN energy constraints,
network lifetime, and distributed mining of streaming data. Another objective was to develop a novel high spatiotemporal resolution version of the standard Canadian fire weather index (FWI) system called the Micro-scale FWI system based on the framework.
The perceived framework integrates autonomous cluster based data
stream mining technique and two-tiered hierarchical WSN architecture to suit the distributed nature of WSN and on the fly
stream mining requirements. The underlying principle of the framework is to handle the sensor
stream mining process in-
network at distributed locations and at multiple hierarchical levels. The approach consists of three distinct processing tasks asynchronously but cooperatively revealing mining the sensor data streams. These tasks are the sensor node, the cluster head, and the
network sink processing tasks. These tasks were formulated by a lightweight autonomous data clustering algorithm called Subtractive Fuzzy C-Means (SUBFCM). The SUBFCM algorithm remains embedded within the individual nodes to analyze the locally generated streams ‘on the fly’ in cooperation with a group of nodes.
The study examined the effects of data
stream characteristics such as data
stream dimensions and
stream periods (data flow rates). Moreover, it evaluated the effects of
network architectures such as node density per cluster and tolerated approximation error on the overall performance of the SUBFCM through simulations. Finally, the QoS or certain level of guaranteed performance that is supported by the WSN architecture for applications utilizing the framework was examined.
The…
Advisors/Committee Members: Al-Anbuky, Adnan (advisor), GholamHusseini, Hamid (advisor).
Subjects/Keywords: Wireless sensor network;
Distributed stream mining;
Distributed sensor stream processing;
Fuzzy clustering;
Micro-scale forest fire monitoring
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sabit, H. (2013). Distributed incremental data stream mining for wireless sensor network
. (Thesis). AUT University. Retrieved from http://hdl.handle.net/10292/5258
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sabit, Hakilo. “Distributed incremental data stream mining for wireless sensor network
.” 2013. Thesis, AUT University. Accessed April 13, 2021.
http://hdl.handle.net/10292/5258.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sabit, Hakilo. “Distributed incremental data stream mining for wireless sensor network
.” 2013. Web. 13 Apr 2021.
Vancouver:
Sabit H. Distributed incremental data stream mining for wireless sensor network
. [Internet] [Thesis]. AUT University; 2013. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/10292/5258.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sabit H. Distributed incremental data stream mining for wireless sensor network
. [Thesis]. AUT University; 2013. Available from: http://hdl.handle.net/10292/5258
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU
10.
Chiu, Tzu-hang.
SCTP Failover Mechanism Improvement Using Concurrent Multipath Transfer on Heterogenous Network.
Degree: Master, Computer Science and Engineering, 2013, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721113-110827
► Nowadays, we can no longer be restricted by the wired due to the development of network technique. No matter we are indoor or outdoor, we…
(more)
▼ Nowadays, we can no longer be restricted by the wired due to the development of
network technique. No matter we are indoor or outdoor, we can search any information via wireless
network anytime. On the use of the mobile communication device, there is a high demand for the development of wireless
network, so the more and more wireless standards have been developed for this situation.
Therefore, it is very common that there are multiple ubiquitous
network around our world, so-called âHeterogeneous
Network.â Users can choose any different
network interface to fit what situation they are facing in. And the transport layer protocol â
Stream Control Transmission Protocol (SCTP), can set up multiple IP address to use while creating the association. In the current situation with heterogeneous
network, SCTP with the multiple IP address can also implement the âFailoverâ feature, and is more suitable than TCP which is restricted in using only single IP address.
Due to the failover drawback that of the standard SCTP where there is an empty period let user not to access the
network temporarily, our research proposes a new failover evaluation mechanism using the concurrent multiple transfer (CMT). We exploit the restriction of CMT to reach the maximum use of CMT, and we also collect the information of all transmission path to decide next primary path when the end of evaluation. Therefore, it can avoid the transmission suffering from the empty period, and selecting a suitable path with sufficient information to do a better transmission.
Advisors/Committee Members: Wen-Shyong Hsieh (chair), Wei Kuang Lai (committee member), Chungnan Lee (chair), Rung-Hung Gau (chair), Yuan-Cheng Lai (chair).
Subjects/Keywords: Heterogeneous Network; Failover; Concurrent Multipath Transfer; SCTP; Stream Control Transmission Protocol; CMT; Multi-homing
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chiu, T. (2013). SCTP Failover Mechanism Improvement Using Concurrent Multipath Transfer on Heterogenous Network. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721113-110827
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chiu, Tzu-hang. “SCTP Failover Mechanism Improvement Using Concurrent Multipath Transfer on Heterogenous Network.” 2013. Thesis, NSYSU. Accessed April 13, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721113-110827.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chiu, Tzu-hang. “SCTP Failover Mechanism Improvement Using Concurrent Multipath Transfer on Heterogenous Network.” 2013. Web. 13 Apr 2021.
Vancouver:
Chiu T. SCTP Failover Mechanism Improvement Using Concurrent Multipath Transfer on Heterogenous Network. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Apr 13].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721113-110827.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chiu T. SCTP Failover Mechanism Improvement Using Concurrent Multipath Transfer on Heterogenous Network. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721113-110827
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

AUT University
11.
Finlay, Jacquiline.
Multi-metric prediction of software build outcomes
.
Degree: 2013, AUT University
URL: http://hdl.handle.net/10292/5209
► This thesis details the design, implementation and evaluation of software prediction models designed to address some of the challenges associated with the identification and mitigation…
(more)
▼ This thesis details the design, implementation and evaluation of software prediction models designed to address some of the challenges associated with the identification and mitigation of the risks associated with a software development project. Being able to predict potential failures during a software development project is critical to project success and has been the
subject of decades of research. Despite the years of research and its importance to the software domain there is much about software project success and failure that remains unknown. This is partially due to the limited software project data available to researchers and the challenges of capturing the relationships between various software artifacts. It is also partially due to the representation, misinterpretation and lack of data captured and made available within existing software projects. As a result there is very little reported research where an attempt has been made to combine software metrics and social
network metrics in order to predict software success and failure.
Software metrics extracted from the source code files of a system during its development are employed to create novel prediction models of software success and failure. The social component of a globally distributed software development team was also investigated using social
network metrics. These social
network metrics were directly mapped to software metrics in order to predict software build outcomes. This thesis presents the results of the first extensive source code analysis of a live software project (IBMs Jazz repository) using a range of traditional data mining methods. A novel data mining approach is reported in which a combination of both software and social
network metrics are used to create software build prediction models. Additionally, data
stream mining techniques were used to construct models for software build prediction. It has been found that data
stream mining offers a powerful solution for monitoring the evolution of source code metrics and social
network metrics over time.
It is found that using aggregated software metrics and social
network metrics it is more difficult to predict software build failure than build success. The results also indicated that a combination of software metrics and social
network metrics do not enhance prediction accuracy. However, when used in parallel they potentially provide an effective decision making tool to avoid potential failure.
Advisors/Committee Members: Connor, Andy (advisor), Pears, Russel (advisor), Whalley, Jacqueline (advisor).
Subjects/Keywords: Software metrics;
Social network metrics;
Data mining;
Data stream mining;
Software repositories
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Finlay, J. (2013). Multi-metric prediction of software build outcomes
. (Thesis). AUT University. Retrieved from http://hdl.handle.net/10292/5209
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Finlay, Jacquiline. “Multi-metric prediction of software build outcomes
.” 2013. Thesis, AUT University. Accessed April 13, 2021.
http://hdl.handle.net/10292/5209.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Finlay, Jacquiline. “Multi-metric prediction of software build outcomes
.” 2013. Web. 13 Apr 2021.
Vancouver:
Finlay J. Multi-metric prediction of software build outcomes
. [Internet] [Thesis]. AUT University; 2013. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/10292/5209.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Finlay J. Multi-metric prediction of software build outcomes
. [Thesis]. AUT University; 2013. Available from: http://hdl.handle.net/10292/5209
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Georgia
12.
Helton, Ashley McKendree.
An inter-biome comparison of stream network nitrate dynamics.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/23398
► A simulation model of stream network NO3 dynamics was developed to scale up measurements of stream-reach NO3 uptake in seven catchments. The model explained NO3…
(more)
▼ A simulation model of stream network NO3 dynamics was developed to scale up measurements of stream-reach NO3 uptake in seven catchments. The model explained NO3 dynamics well in two of seven catchments, revealing inter-biome differences in
drivers of in-stream NO3 dynamics. Where the model performed poorly, additional drivers included: spatial distribution of NO3 sources; hydrologic delivery pathways of NO3; surface water-groundwater exchange; downstream changes in geomorphology/flow; and
variation in uptake. Where the model performed well, uptake was a stronger driver and the network removed a higher proportion of NO3 inputs in Kansas than in North Carolina. In both catchments, small streams removed a substantial proportion of total
inputs and were efficient NO3 removers, whereas large streams removed more NO3 mass individually. This research highlights the importance of understanding the influence of hydrology, geomorphology and biology on in-stream NO3 dynamics in order to
explain, predict and understand NO3 uptake across biomes.
Subjects/Keywords: nitrate; nitrogen; nutrient cycling; stream network; model; nitrogen uptake; inter-biome comparison
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Helton, A. M. (2014). An inter-biome comparison of stream network nitrate dynamics. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/23398
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Helton, Ashley McKendree. “An inter-biome comparison of stream network nitrate dynamics.” 2014. Thesis, University of Georgia. Accessed April 13, 2021.
http://hdl.handle.net/10724/23398.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Helton, Ashley McKendree. “An inter-biome comparison of stream network nitrate dynamics.” 2014. Web. 13 Apr 2021.
Vancouver:
Helton AM. An inter-biome comparison of stream network nitrate dynamics. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/10724/23398.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Helton AM. An inter-biome comparison of stream network nitrate dynamics. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/23398
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Canterbury
13.
Campbell, Rebecca Elisabeth.
Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?.
Degree: PhD, Ecology, 2011, University of Canterbury
URL: http://dx.doi.org/10.26021/7681
► Dendritic stream networks are inherently spatially and hierarchically structured, but the effects of this structure on stream communities are largely unknown. My aim was to…
(more)
▼ Dendritic stream networks are inherently spatially and hierarchically structured, but the effects of this structure on stream communities are largely unknown. My aim was to investigate spatial patterns in stream networks using extensive spatial sampling of both adult and benthic macroinvertebrates in four stream networks on the West Coast of the South Island, New Zealand. Using spatial modelling and analyses, I answered questions about appropriate spatial measurements to capture ecological processes in stream networks, metacommunity processes at different scales in space and time, and how local and regional processes interact to structure metacommunities in stream networks.
Spatial eigenfunction analyses showed that distance measures that explained most variance in stream macroinvertebrate communities were stream distance and weighted stream distance measures. They performed better than Euclidean distance to measure spatial structure that is ecologically
relevant to stream network communities. The spatial pattern of benthic
stream macroinvertebrates was stable over time, whereas community composition changed significantly, as shown by space-time interactions modelled by MANOVA-like redundancy analysis. Thus, spatial processes structuring stream metacommunities remained constant, in agreement with neutral model predictions. Network-scale properties, particularly flood disturbances, influenced the relative importance of spatial and environmental
variation in stream network metacommunities. Additionally, quantile regression indicated that three key variables, habitat size, isolation and local habitat conditions, jointly limited community structure in stream networks, providing empirical support for both island biogeography and metacommunity theories.
My study indicated that spatial structuring has an important influence on stream macroinvertebrate communities. The results contribute to broader ecological theory and understanding of community assembly by relating empirical results to theoretical predictions. In particular, they advance understanding of spatial processes in stream networks. The research also highlights a number of new methods, which were successfully applied to stream systems to elucidate complex spatial patterns.
Subjects/Keywords: Stream network; spatial ecology; benthic invertebrates
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Campbell, R. E. (2011). Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?. (Doctoral Dissertation). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/7681
Chicago Manual of Style (16th Edition):
Campbell, Rebecca Elisabeth. “Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?.” 2011. Doctoral Dissertation, University of Canterbury. Accessed April 13, 2021.
http://dx.doi.org/10.26021/7681.
MLA Handbook (7th Edition):
Campbell, Rebecca Elisabeth. “Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?.” 2011. Web. 13 Apr 2021.
Vancouver:
Campbell RE. Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?. [Internet] [Doctoral dissertation]. University of Canterbury; 2011. [cited 2021 Apr 13].
Available from: http://dx.doi.org/10.26021/7681.
Council of Science Editors:
Campbell RE. Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?. [Doctoral Dissertation]. University of Canterbury; 2011. Available from: http://dx.doi.org/10.26021/7681

NSYSU
14.
Yang, Kai-ming.
A Ring-like Arbitration Strategy Schedule for Networks-On-Chips.
Degree: PhD, Electrical Engineering, 2013, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618113-150752
► Multi-core systems in single chip exploit ILP (Instruction-Level Parallelism) and TLP (Thread-Level Parallelism) to improve the system performance. Therefore, efficiency of transferring data among cores…
(more)
▼ Multi-core systems in single chip exploit ILP (Instruction-Level Parallelism) and TLP (Thread-Level Parallelism) to improve the system performance. Therefore, efficiency of transferring data among cores dominates the multi-core system performance. This work proposed a fair arbitration strategy to improve starvation and hotspot problems for multi-core systems in on-chip networks. On the other hands, to reduce the gap between the traditional memory hierarchy and processors, a novel buffering mechanism is proposed to improve the data fetch for
network-on-chip nodes.
On multi-core systems in on-chip networks, the global fairness, scalability, and simplicity of the strategy used to arbitrate the communications of collisions among cores have substantial effects. An unfair strategy causes starvation and hotspot problems, especially under heavy loads. In addition, the complexity of the hardware of the arbitration strategy that is involved in the on-chip environment must also be considered. To address these issues, this paper presents a simple and fair strategy that involves properly adjusting priorities of nodes. In the initial states of transferring data, each node has unique priorities. When competition among nodes occurs at a particular
network, the loser swaps their priority with the priority of the winner. This principle guarantees that the opportunities of winners to decrease for the subsequent connection, whereas the priorities of winners increase. Using simple comparing and exchanging operations, the proposed arbitration strategy is an efficient global fairness strategy. Moreover, considering the speed and clock skew, asynchronous circuits are used for implementations. Simulation results demonstrate that by applying a fair strategy, the proposed scheme alleviates starvation, guarantees deadlock freedom, and improves hotspot problems. In a large system, this approach efficiently provides experience of service.
The traditional memory hierarchy design can smooth the data
stream and instruction
stream. However, the bandwidth of the instruction
stream and data
stream are still the main challenge for high-performance microprocessor systems. To improve the data and instruction fetchers, the proposed buffering architecture can exploits both the temporal and spatial localities with a relation-exchanging buffering mechanism. On buffers hit, the instruction or data can be reused. At the same time, the prefetching mechanism will be enabled to prefetch the instruction/data being used in the near future. According to the simulation results, the proposed buffering mechanism with the depth 3 and 64-byte line size, which only needs extra 4% hardware cost, is a cost-effectiveness choice. The hit rate of the proposed buffer mechanism can 22% outperforms that of loop buffer architecture to fetch instruction
stream and 7% outperform that of First-In-First-Out (FIFO) strategy to fetch data
stream.
Advisors/Committee Members: Chung-Ho Chen (chair), Shiann-Rong Kuang (chair), Chung-Ping Chung (chair), Jih-ching Chiu (committee member), Shen-Fu Hsiao. (chair), Chu-Sing Yang (chair), Tong-Yu Hsieh (chair).
Subjects/Keywords: Distributed on-chip network arbitration strategy; Instruction and data stream buffer; Asynchronous circuits; Network-on-chip; Priority selector
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yang, K. (2013). A Ring-like Arbitration Strategy Schedule for Networks-On-Chips. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618113-150752
Chicago Manual of Style (16th Edition):
Yang, Kai-ming. “A Ring-like Arbitration Strategy Schedule for Networks-On-Chips.” 2013. Doctoral Dissertation, NSYSU. Accessed April 13, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618113-150752.
MLA Handbook (7th Edition):
Yang, Kai-ming. “A Ring-like Arbitration Strategy Schedule for Networks-On-Chips.” 2013. Web. 13 Apr 2021.
Vancouver:
Yang K. A Ring-like Arbitration Strategy Schedule for Networks-On-Chips. [Internet] [Doctoral dissertation]. NSYSU; 2013. [cited 2021 Apr 13].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618113-150752.
Council of Science Editors:
Yang K. A Ring-like Arbitration Strategy Schedule for Networks-On-Chips. [Doctoral Dissertation]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618113-150752

Texas State University – San Marcos
15.
Gonzalez Guerra, Eduardo.
Reducing SCTP's (Stream Control Transmission Protocol) Time-to-Complete by Manipulation of its Retransmission Time Out Minimum.
Degree: MS, Software Engineering, 2014, Texas State University – San Marcos
URL: https://digital.library.txstate.edu/handle/10877/5278
► The Stream Control Transmission Protocol (SCTP) is a relatively young transport protocol that was originally designed to transfer SS7 signaling messages over packet switched networks…
(more)
▼ The
Stream Control Transmission Protocol (SCTP) is a relatively young transport protocol that was originally designed to transfer SS7 signaling messages over packet switched networks but has since been standardized for general use. It provides many attractive characteristics not found in current dominant protocols like User Datagram Protocol (UDP) and Transmission Control Protocol (TCP) and shows promising performance metrics. This thesis focuses on SCTP’s retransmission mechanisms and how they're affected by
network conditions, providing insight into optimization opportunities. For this purpose a research platform is presented that enables rapid prototyping of new algorithms and fast turnover of performance data. The platform is then used to verify previous SCTP research and will be used to reduce the often large learning curve of Linux Kernel development. Finally we present a novel algorithm for dynamically determining the optimum Retransmission Time Out Minimum (RTOmin) value of an SCTP association that significantly improves performance while avoiding spurious retransmissions.
Advisors/Committee Members: Peng, Wuxu (advisor), McClellan, Stan (committee member), Guirguis, Mina (committee member).
Subjects/Keywords: SCTP; RTOmin; RTO; Return time out; Fast retransmission; Protocol; Network; Stream Control Transmission Protocol (Computer network protocol); Computer networks
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gonzalez Guerra, E. (2014). Reducing SCTP's (Stream Control Transmission Protocol) Time-to-Complete by Manipulation of its Retransmission Time Out Minimum. (Masters Thesis). Texas State University – San Marcos. Retrieved from https://digital.library.txstate.edu/handle/10877/5278
Chicago Manual of Style (16th Edition):
Gonzalez Guerra, Eduardo. “Reducing SCTP's (Stream Control Transmission Protocol) Time-to-Complete by Manipulation of its Retransmission Time Out Minimum.” 2014. Masters Thesis, Texas State University – San Marcos. Accessed April 13, 2021.
https://digital.library.txstate.edu/handle/10877/5278.
MLA Handbook (7th Edition):
Gonzalez Guerra, Eduardo. “Reducing SCTP's (Stream Control Transmission Protocol) Time-to-Complete by Manipulation of its Retransmission Time Out Minimum.” 2014. Web. 13 Apr 2021.
Vancouver:
Gonzalez Guerra E. Reducing SCTP's (Stream Control Transmission Protocol) Time-to-Complete by Manipulation of its Retransmission Time Out Minimum. [Internet] [Masters thesis]. Texas State University – San Marcos; 2014. [cited 2021 Apr 13].
Available from: https://digital.library.txstate.edu/handle/10877/5278.
Council of Science Editors:
Gonzalez Guerra E. Reducing SCTP's (Stream Control Transmission Protocol) Time-to-Complete by Manipulation of its Retransmission Time Out Minimum. [Masters Thesis]. Texas State University – San Marcos; 2014. Available from: https://digital.library.txstate.edu/handle/10877/5278

Ryerson University
16.
Naith, Qamar.
Performance evaluation of mixed SCTP and TCP traffic over last hop wifi:.
Degree: 2014, Ryerson University
URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A3426
► The use of the internet has increased significantly with the continued increase in wireless communication devices. Recently, there is a large number of research contribution…
(more)
▼ The use of the internet has increased significantly with the continued increase in wireless communication devices. Recently, there is a large number of research contribution focused on
Stream Control Transmission Protocol (SCTP). Multi-homing is an important feature of SCTP which improves the communication performance by usage of multiple paths during association establishment, and it can bring significant improvements of throughput.
In this thesis we evaluate the performance of SCTP and TCP traffic in the WLANs and we investigate the SCTP multi-homing to improve the communication performance in WLANs. We conducted some experiments to evaluate the performance of SCTP multi-homed host under various channel bit rates and mobility speeds. The results indicate that when the intensity of background traffic increases the SCTP multi-homed host with higher channel bit rate has better performance. In addition, the SCTP multi-homed host with using lower mobility speed has higher performance (throughput, delay and packet loss).
Advisors/Committee Members: Misic, Dr. Jelena (Thesis advisor), Ryerson University (Degree grantor).
Subjects/Keywords: Wireless LANs – Standards; Wireless LANs – Standards – -; Stream Control Transmission Protocol (Computer network protocol) – Evaluation; Stream Control Transmission Protocol (Computer network protocol) – Evaluation – -; TCP/IP (Computer network protocol) – Evaluation; TCP/IP (Computer network protocol) – Evaluation – -
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Naith, Q. (2014). Performance evaluation of mixed SCTP and TCP traffic over last hop wifi:. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A3426
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Naith, Qamar. “Performance evaluation of mixed SCTP and TCP traffic over last hop wifi:.” 2014. Thesis, Ryerson University. Accessed April 13, 2021.
https://digital.library.ryerson.ca/islandora/object/RULA%3A3426.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Naith, Qamar. “Performance evaluation of mixed SCTP and TCP traffic over last hop wifi:.” 2014. Web. 13 Apr 2021.
Vancouver:
Naith Q. Performance evaluation of mixed SCTP and TCP traffic over last hop wifi:. [Internet] [Thesis]. Ryerson University; 2014. [cited 2021 Apr 13].
Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A3426.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Naith Q. Performance evaluation of mixed SCTP and TCP traffic over last hop wifi:. [Thesis]. Ryerson University; 2014. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A3426
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University
17.
Kang, Shujiang.
Spatial and Temporal Analysis of Soil-landscape and Water Quality in the East Mahantango Creek Watershed
.
Degree: 2008, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/7307
► Nonpoint source pollution is a world-wide concern for its exacerbation of water quality. Understanding spatial and temporal distribution of nonpoint source pollutants associated with soil-landscape…
(more)
▼ Nonpoint source pollution is a world-wide concern for its exacerbation of water quality. Understanding spatial and temporal distribution of nonpoint source pollutants associated with soil-landscape variability can assist in predicting and monitoring water quality in watersheds. Variability of landscape features, soil properties, and water quality in the
stream-order-based sub-watersheds and buffer zones was investigated in the East Mahantango Creek Watershed (EMC) located in the Ridge and Valley Physiographic Province of east-central Pennsylvania. In addition to spatial analysis of soils and landscape features in the EMC, a systematic temporal analysis (traditional time series analysis, spectral analysis, and wavelet analysis) was conducted for the WE-38 Watershed, a third-order sub-watershed within the EMC using 15 years of monitoring data of hydrology and water quality.
Variability of elevation, slope, and land uses along different order sub-watersheds is influenced by the watershed topography (ridges and valleys). The coarse data of surface geology and the STATSGO soils database do not reflect actual variations among different order sub-watersheds. With more detailed SSURGO soils database, the area-weighted method recommended by the USDA-NRCS tends to smear out soil variations. A series of soil property trends were observed in buffer zones of different order streams along the
stream network. Within the buffer distance of 150 m, the top two soil layers in lower order
stream buffer zones have higher clay content and higher bulk density than those of higher order streams, but have shallower depth to bedrock, lower available water capacity, and lower organic matter content compared to higher order streams. Beyond the buffer zone of 150 m, variations of soil properties appear to stabilize. The buffer distance of 70-100 m seems to be a threshold value that reflects significant changes of soil properties in the buffer zones along the
stream network. These trends of soil properties in the buffer zones of different order streams can be explained by the effects of local topographic features and soil transport processes such as colluvial and alluvial process. The soil variability analysis along
stream buffer zones provides useful information regarding soil distribution along
stream network that would benefit buffer zone management and environmental modeling. The three zones (hillslope zones, transitional zones and floodplain zones) reflecting soil formation and transport can be applicable to generate representative soil properties for environmental modeling and management at watershed or catchment scales.
Baseflow water quality in different order streams was investigated using one year of monitoring dataset together with two historical sampling datasets. Overall, a negative correlation between baseflow nitrate concentration and
stream order was observed; however, significant spatial-temporal variations existed. Nitrate concentration was also linearly correlated to agricultural land use. The decreasing trend…
Advisors/Committee Members: Hangsheng Lin, Committee Chair/Co-Chair, Gary Walter Petersen, Committee Member, William Gburek, Committee Member, David Russell Dewalle, Committee Member, Patrick M Reed, Committee Member.
Subjects/Keywords: water quality; landscape; soil; temporal analysis; spatial analysis; stream order; stream network
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kang, S. (2008). Spatial and Temporal Analysis of Soil-landscape and Water Quality in the East Mahantango Creek Watershed
. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/7307
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kang, Shujiang. “Spatial and Temporal Analysis of Soil-landscape and Water Quality in the East Mahantango Creek Watershed
.” 2008. Thesis, Penn State University. Accessed April 13, 2021.
https://submit-etda.libraries.psu.edu/catalog/7307.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kang, Shujiang. “Spatial and Temporal Analysis of Soil-landscape and Water Quality in the East Mahantango Creek Watershed
.” 2008. Web. 13 Apr 2021.
Vancouver:
Kang S. Spatial and Temporal Analysis of Soil-landscape and Water Quality in the East Mahantango Creek Watershed
. [Internet] [Thesis]. Penn State University; 2008. [cited 2021 Apr 13].
Available from: https://submit-etda.libraries.psu.edu/catalog/7307.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kang S. Spatial and Temporal Analysis of Soil-landscape and Water Quality in the East Mahantango Creek Watershed
. [Thesis]. Penn State University; 2008. Available from: https://submit-etda.libraries.psu.edu/catalog/7307
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech
18.
Hitt, Nathaniel Patterson.
Effects of stream network topology on fish assemblage structure and bioassessment sensitivity in the mid-Atlantic highlands, USA.
Degree: PhD, Fisheries and Wildlife Sciences, 2007, Virginia Tech
URL: http://hdl.handle.net/10919/27218
► Stream fish assemblages exist within stream networks defined by the size and proximity of connected streams (i.e., stream network topology). The spatial position of sites…
(more)
▼ Stream fish assemblages exist within
stream networks defined by the size and proximity of connected streams (i.e.,
stream network topology). The spatial position of sites within
stream networks may therefore regulate opportunities for fish dispersal to access distant resources or colonize "new" habitats. Such inter-
stream dispersal dynamics will influence local fish assemblage structure and the vulnerability of local assemblages to anthropogenic stressors. In this dissertation, I explored the effects of
stream network topology on fish assemblage structure in the mid-Atlantic highlands, USA and tested the hypothesis that dispersal would affect the sensitivity of fish-based environmental quality assessments (i.e., bioassessments).
In chapter 1, I evaluated the effects of
stream networks by comparing fish assemblages between sites with and without large downstream confluences (>3rd order) in western Virginia, USA (i.e., mainstem tributaries and headwater tributaries, respectively). I found that local species richness was higher in mainstem tributaries than headwater tributaries and that these effects could not be explained by variation in local environmental habitat conditions. In chapter 2, I developed and applied a continuous model of
stream network topology to explore the effects of downstream size and proximity on local fish assemblage structure within the mid-Atlantic highlands. I found that fish assemblage structure (i.e., Bray-Curtis distances in species abundance) was significantly related to variation in
stream network topology up to approximately 9 fluvial km from sites.
Chapters 3 and 4 explored the implications of inter-
stream dispersal for fish bioassessments. In Chapter 3, I identified 10 fish metrics that corresponded predictably to environmental stressors in the mid-Atlantic highlands. However, headwater tributary assemblages showed stronger relations to local environmental quality than mainstem tributaries, consistent with the hypothesis of riverine dispersal. In Chapter 4, I compared the effects of
stream network topology on fish and benthic macroinvertebrate assemblages. Fish metrics were influenced by the size and proximity of connected streams but benthic macroinvertebrate metrics were not. This finding suggests that
stream fishes may complement benthic macroinvertebrate bioassessments by indicating environmental conditions at larger spatial grains.
Advisors/Committee Members: Angermeier, Paul L. (committeechair), Zipper, Carl E. (committee member), Voshell, J. Reese Jr. (committee member), Heatwole, Conrad D. (committee member), Flebbe, Patricia A. (committee member), Dolloff, C. Andrew (committee member).
Subjects/Keywords: stream network topology; stream ecology; bioassessment; landscape ecology; dispersal; freshwater fish ecology
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hitt, N. P. (2007). Effects of stream network topology on fish assemblage structure and bioassessment sensitivity in the mid-Atlantic highlands, USA. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/27218
Chicago Manual of Style (16th Edition):
Hitt, Nathaniel Patterson. “Effects of stream network topology on fish assemblage structure and bioassessment sensitivity in the mid-Atlantic highlands, USA.” 2007. Doctoral Dissertation, Virginia Tech. Accessed April 13, 2021.
http://hdl.handle.net/10919/27218.
MLA Handbook (7th Edition):
Hitt, Nathaniel Patterson. “Effects of stream network topology on fish assemblage structure and bioassessment sensitivity in the mid-Atlantic highlands, USA.” 2007. Web. 13 Apr 2021.
Vancouver:
Hitt NP. Effects of stream network topology on fish assemblage structure and bioassessment sensitivity in the mid-Atlantic highlands, USA. [Internet] [Doctoral dissertation]. Virginia Tech; 2007. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/10919/27218.
Council of Science Editors:
Hitt NP. Effects of stream network topology on fish assemblage structure and bioassessment sensitivity in the mid-Atlantic highlands, USA. [Doctoral Dissertation]. Virginia Tech; 2007. Available from: http://hdl.handle.net/10919/27218
19.
Sergio Luis Yoneda.
Análise hidrológica utilizando redes neurais para previsão de séries de vazões.
Degree: 2014, University of São Paulo
URL: http://www.teses.usp.br/teses/disponiveis/18/18153/tde-13052014-110534/
► O estudo de inventário tem por objetivo estimar o potencial hidroelétrico de rios ou bacias, analisando várias alternativas propostas de partição de quedas, sendo que…
(more)
▼ O estudo de inventário tem por objetivo estimar o potencial hidroelétrico de rios ou bacias, analisando várias alternativas propostas de partição de quedas, sendo que cada alternativa contém um conjunto de aproveitamentos hidroelétricos. Essas alternativas são então estudadas individualmente para definição da alternativa ótima, ou seja, a que tem melhor custo beneficio e ao mesmo tempo cause menos danos ambientais. Para essa análise necessitamos calcular a potência de cada aproveitamento específico, assim como a energia gerada, para isso então precisamos conhecer a vazão do rio em estudo, no local desses aproveitamentos. Como a vazão dos rios varia com o tempo, pois depende de variáveis como clima, geologia dos solos, desmatamento, entre outras, se recomenda usar nos cálculos séries longas de vazões médias com no mínimo 30 anos de dados, o problema é que em muitos casos não temos essas séries ou temos séries menores e incompletas, nesse caso então
necessitamos estimar os valores ausentes e ruidosos utilizando os dados de estações fluviométricas próximas, para depois transportá-las para o aproveitamento em estudo, para isso utilizamos de técnicas estatísticas de correlação. A ideia nesse trabalho é de utilizarmos redes neurais artificiais ao invés das técnicas convencionais e comparar os resultados obtidos.
The inventory study aims to estimate the hydropower potential of rivers or basins, analyzing several alternative proposals for partition of falls, each of which contains a set of alternative hydroelectric developments. These alternatives are then individually analyzed to define the optimal alternative, namely that which has the best cost benefit while causing less environmental damage. For this analysis we need to calculate the power of each specific use, as well as the energy generated for that then we need to know the flow of the river under study, the location of these usages. As the river flow varies with time
because it depends on variables such as climate, geology, soils, deforestation, among others, we recommend using the long series of calculations mean flow at least 30 years of data, the problem is that in many cases we do not have these series or have smaller and incomplete series, in this case then we need to estimate the missing values and noisy data using next gauged stations, and then transport them to use in the study, for this we use statistical correlation techniques. The idea is that we use work instead of the conventional Artificial Neural Network techniques and compare the results.
Advisors/Committee Members: Rogério Andrade Flauzino, Sérgio Kurokawa, José Alfredo Covolan Ulson.
Subjects/Keywords: Estações fluviométricas; Inventários de rios; Redes neurais artificiais; Séries de vazões; Usinas hidrelétricas; Artificial neural network; Hydroelectric power plants; Inventories of rivers; Stream flow series; Stream gauged stations
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yoneda, S. L. (2014). Análise hidrológica utilizando redes neurais para previsão de séries de vazões. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/18/18153/tde-13052014-110534/
Chicago Manual of Style (16th Edition):
Yoneda, Sergio Luis. “Análise hidrológica utilizando redes neurais para previsão de séries de vazões.” 2014. Masters Thesis, University of São Paulo. Accessed April 13, 2021.
http://www.teses.usp.br/teses/disponiveis/18/18153/tde-13052014-110534/.
MLA Handbook (7th Edition):
Yoneda, Sergio Luis. “Análise hidrológica utilizando redes neurais para previsão de séries de vazões.” 2014. Web. 13 Apr 2021.
Vancouver:
Yoneda SL. Análise hidrológica utilizando redes neurais para previsão de séries de vazões. [Internet] [Masters thesis]. University of São Paulo; 2014. [cited 2021 Apr 13].
Available from: http://www.teses.usp.br/teses/disponiveis/18/18153/tde-13052014-110534/.
Council of Science Editors:
Yoneda SL. Análise hidrológica utilizando redes neurais para previsão de séries de vazões. [Masters Thesis]. University of São Paulo; 2014. Available from: http://www.teses.usp.br/teses/disponiveis/18/18153/tde-13052014-110534/

NSYSU
20.
Chen, Po-hung.
A Delay-Based CMT-SCTP Packet Scheduling Scheme with Consideration of Cross-Layer Information.
Degree: Master, Computer Science and Engineering, 2014, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722114-151936
► In recent years, due to the population of mobile devices and growing demand of network services, the wireless network becomes more important. ããNowadays, it is…
(more)
▼ In recent years, due to the population of mobile devices and growing demand of
network services, the wireless
network becomes more important.
ããNowadays, it is very common that there are multiple ubiquitous
network around our life, so-called âHeterogeneous
Network.â Users can choose any different
network interface to fit what situation they are facing in. And the transport layer protocol â
Stream Control Transmission Protocol (SCTP), can set up multiple IP address to use while creating the association. It is more suitable than TCP which is restricted in using only single IP address. In the current situation with heterogeneous
network, SCTP with the multiple IP address can use the Concurrent Multipath Transfer (CMT) feature, and make transmission performance well.
ããIn fact, the Concurrent Multipath Transfer (CMT) has drawbacks while using multiple path to transmission data simultaneously. It causes the Receiver Buffer Blocking problem because of packet loss or different growth rate of paths, and makes the total throughput worse. In our paper, we propose a Delay-Based CMT-SCTP Packet Scheduling Scheme with Consideration of Cross-Layer Information. We use the cross-layer information to determine the path should join the scheduler or not, and then fix
the estimated RTT. Moreover, in order to mitigate the probability of Receiver Buffer Blocking problem, we make some compensation mechanism when we estimated inaccurate RTT. The simulation results show that our scheme have better transmission throughput.
Advisors/Committee Members: Hsu-Yang Kung (chair), Wen-Shyong Hsieh (chair), Wei Kuang Lai (committee member), Chin-shiuh Shieh (chair).
Subjects/Keywords: SCTP; Stream Control Transmission Protocol; CMT; Receiver Buffer Blocking; Concurrent Multipath Transfer; Cross-layer Information; Heterogeneous Network
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chen, P. (2014). A Delay-Based CMT-SCTP Packet Scheduling Scheme with Consideration of Cross-Layer Information. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722114-151936
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chen, Po-hung. “A Delay-Based CMT-SCTP Packet Scheduling Scheme with Consideration of Cross-Layer Information.” 2014. Thesis, NSYSU. Accessed April 13, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722114-151936.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Po-hung. “A Delay-Based CMT-SCTP Packet Scheduling Scheme with Consideration of Cross-Layer Information.” 2014. Web. 13 Apr 2021.
Vancouver:
Chen P. A Delay-Based CMT-SCTP Packet Scheduling Scheme with Consideration of Cross-Layer Information. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Apr 13].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722114-151936.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen P. A Delay-Based CMT-SCTP Packet Scheduling Scheme with Consideration of Cross-Layer Information. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722114-151936
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
21.
Chellaprabha, B.
Improved congestion control using reset frequency
controlled dynamic parameter re estimation in wireless sensor
networks; -.
Degree: Information and Communication
Engineering, 2014, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/22616
► Congestion is a phenomenon which occurs in data communication newlinenetworks while transmitting packets beyond the admissible limit of a link newlineThe function of transport layer…
(more)
▼ Congestion is a phenomenon which occurs in data
communication newlinenetworks while transmitting packets beyond the
admissible limit of a link newlineThe function of transport layer
in a sensor network protocol stack is to assure newlinereliable
data transmission and hence handling congestion is a part of a
newlinetransport protocol Some of the standard transport protocols
widely newlineimplemented at present are Transmission Control
Protocol TCP User newlineDatagram Protocol Stream control
Transmission Protocol and newlineDatagram Congestion Control
Protocol Out of these protocols TCP newlineensures reliable data
transmission with in order packet delivery and newlinecongestion
control UDP supports neither in order delivery nor congestion
newlinecontrol and hence highly unreliable protocol DCCP implements
TCP like newlinecongestion control mechanism but does not support
reliable data transmission newlineas in UDP However all these
protocol are mainly designed for wired and newlinewireless networks
not for sensor networks newlineThe nodes of a Wireless Sensor
Network are randomly newlinedeployed over a specific region or
embedded inside the application that needs newlineto be remotely
monitored and so the structure is very ad hoc nature Further
newlinethe nodes are very tiny and have only limited capabilities
and restricted newlinebattery power Hence the protocols which are
designed for normal wired and newlinewireless networks may not be
completely suitable for WSNs newline newline
References p.151-160
Advisors/Committee Members: Chenthur Pandian, S.
Subjects/Keywords: Datagram Congestion Control Protocol; Information and communication engineering; Stream control Transmission Protocol; Transmission Control Protocol; User Datagram Protocol; Wireless Sensor Network
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chellaprabha, B. (2014). Improved congestion control using reset frequency
controlled dynamic parameter re estimation in wireless sensor
networks; -. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/22616
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chellaprabha, B. “Improved congestion control using reset frequency
controlled dynamic parameter re estimation in wireless sensor
networks; -.” 2014. Thesis, Anna University. Accessed April 13, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/22616.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chellaprabha, B. “Improved congestion control using reset frequency
controlled dynamic parameter re estimation in wireless sensor
networks; -.” 2014. Web. 13 Apr 2021.
Vancouver:
Chellaprabha B. Improved congestion control using reset frequency
controlled dynamic parameter re estimation in wireless sensor
networks; -. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Apr 13].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/22616.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chellaprabha B. Improved congestion control using reset frequency
controlled dynamic parameter re estimation in wireless sensor
networks; -. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/22616
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University
22.
Subramaniam, M.
Multipath state aware CMT using redundant transmission
for SCTP multi homed hosts; -.
Degree: Information and Communication
Engineering, 2014, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/24446
► Advancement in networking technology has made it possible to transmit multimedia data in wired as well as wireless environments While the development of the Stream…
(more)
▼ Advancement in networking technology has made it
possible to transmit multimedia data in wired as well as wireless
environments While the development of the Stream Control
Transmission Protocol was directly motivated by the transportation
of the Public Switched Telephone Network signaling messages across
the Internet Protocol network SIGTRAN ensured that the design is
also a good match for other applications with similar requirements
The SCTP is a general purpose transport layer protocol for IP
network data communications serving in a role analogous to the
common protocols Transmission Control Protocol and User Datagram
Protocol Two new major capabilities are designed into the SCTP the
support for multihomed hosts and the support for multiple streams
in a single SCTP association The built in support for multi homed
hosts allows a single SCTP association to run across multiple links
paths to achieve link path redundancy With this capability an SCTP
association can be made to achieve fast failover from one link or
path to another with little interruption to the data transfer
service Multihomed SCTP end points might be less affected by
network reconvergence because the lost packets are retransmitted to
an alternative address The primary purpose of the SCTP is to
provide a reliable end to end message transportation service over
IP based networks The SCTP exploits the multihoming feature through
newline
Appendix p.138-161, References
p.162-168
Advisors/Committee Members: Manjula, D.
Subjects/Keywords: Concurrent Multipath Transfer; Information and communication engineering; Internet Protocol; Public Switched Telephone Network; Stream Control Transmission Protocol; Transmission Control Protocol
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Subramaniam, M. (2014). Multipath state aware CMT using redundant transmission
for SCTP multi homed hosts; -. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/24446
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Subramaniam, M. “Multipath state aware CMT using redundant transmission
for SCTP multi homed hosts; -.” 2014. Thesis, Anna University. Accessed April 13, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/24446.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Subramaniam, M. “Multipath state aware CMT using redundant transmission
for SCTP multi homed hosts; -.” 2014. Web. 13 Apr 2021.
Vancouver:
Subramaniam M. Multipath state aware CMT using redundant transmission
for SCTP multi homed hosts; -. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Apr 13].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/24446.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Subramaniam M. Multipath state aware CMT using redundant transmission
for SCTP multi homed hosts; -. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/24446
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology
23.
Ružička, Jakub.
Nástroj pro získávání hlasových dat VoIP: A Tool for VoIP Audio Extraction.
Degree: 2018, Brno University of Technology
URL: http://hdl.handle.net/11012/55195
► In this thesis, we describe VoIP protocols and design of a system to reconstruct audio data from VoIP communication. The system is able to detect…
(more)
▼ In this thesis, we describe VoIP protocols and design of a system to reconstruct audio data from VoIP communication. The system is able to detect VoIP packet streams in an IP
network traffic and assemble an audio signal they carry. RTP and IAX VoIP protocols are supported. Unlike widespread RTP protocol, IAX is not fully supported by available tools although it is used by increasingly popular Asterisk communications project and offers interesting features not found in RTP. The system is implemented as a library with minimal frontend.
Advisors/Committee Members: Matoušek, Petr (advisor), Ryšavý, Ondřej (referee).
Subjects/Keywords: získávání VoIP audia; analýza síťových proudů; IAX; RTP; VoIP audio extraction; network stream analysis; IAX; RTP
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ružička, J. (2018). Nástroj pro získávání hlasových dat VoIP: A Tool for VoIP Audio Extraction. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/55195
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ružička, Jakub. “Nástroj pro získávání hlasových dat VoIP: A Tool for VoIP Audio Extraction.” 2018. Thesis, Brno University of Technology. Accessed April 13, 2021.
http://hdl.handle.net/11012/55195.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ružička, Jakub. “Nástroj pro získávání hlasových dat VoIP: A Tool for VoIP Audio Extraction.” 2018. Web. 13 Apr 2021.
Vancouver:
Ružička J. Nástroj pro získávání hlasových dat VoIP: A Tool for VoIP Audio Extraction. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/11012/55195.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ružička J. Nástroj pro získávání hlasových dat VoIP: A Tool for VoIP Audio Extraction. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/55195
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
24.
Wang, Binghao.
Object Detection with Two-stream Convolutional Networks and Scene Geometry Information
.
Degree: 2019, University of Ottawa
URL: http://hdl.handle.net/10393/38873
► With the emergence of Convolutional Neural Network (CNN) models, precision of image classification tasks has been improved significantly over these years. Regional CNN (RCNN) model…
(more)
▼ With the emergence of Convolutional Neural Network (CNN) models, precision of image classification tasks has been improved significantly over these years. Regional CNN (RCNN) model is proposed to solve object detection tasks with a combination of Region Proposal Network and CNN. This model improves the detection accuracy but suffer from slow inference speed because of its multi-stage structure. The Single Stage Detection (SSD) network is later proposed to further improve the object detection benchmark in terms of accuracy and speed. However, SSD model still suffers from high miss rate on small targets since datasets are usually dominated by medium and large sized objects, which don’t share the same features with small ones.
On the other hand, geometric analysis on dataset images can provide additional information before model training. In this thesis, we propose several SSD-based models with adjusted parameters on feature extraction layers by using geometric analysis on KITTI and Caltech Pedestrian datasets. This analysis extends SSD’s capability on small objects detection. To further improve detection accuracy, we propose a two-stream network, which uses one stream to detect medium to large objects, and another stream specifically for small objects. This two-stream model achieves competitive performance comparing to other algorithms on KITTI and Caltech Pedestrian benchmark. Those results are shown and analysed in this thesis as well.
Subjects/Keywords: object detection;
two-stream convolutional network
…4.1
Two-stream SSD. Besides the customized 4-feature-layer network, another
stream (in… …detection purpose.
1.3
Contributions
We propose a deep two-stream network based on SSD for… …Finally we propose our customized network as well
as the two-stream network.
3.1
SSD… …and Faster R-CNN [26]
(right) network architectures comparison. R-CNN is… …Region Proposal Network (RPN) to propose region directly from
feature map…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wang, B. (2019). Object Detection with Two-stream Convolutional Networks and Scene Geometry Information
. (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/38873
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wang, Binghao. “Object Detection with Two-stream Convolutional Networks and Scene Geometry Information
.” 2019. Thesis, University of Ottawa. Accessed April 13, 2021.
http://hdl.handle.net/10393/38873.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wang, Binghao. “Object Detection with Two-stream Convolutional Networks and Scene Geometry Information
.” 2019. Web. 13 Apr 2021.
Vancouver:
Wang B. Object Detection with Two-stream Convolutional Networks and Scene Geometry Information
. [Internet] [Thesis]. University of Ottawa; 2019. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/10393/38873.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wang B. Object Detection with Two-stream Convolutional Networks and Scene Geometry Information
. [Thesis]. University of Ottawa; 2019. Available from: http://hdl.handle.net/10393/38873
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
25.
Alkhouli, Abdulhafiz.
Traitement continu de requêtes top-k dans les réseaux sociaux : Continuous processing of top-k queries in social networks.
Degree: Docteur es, STIC (sciences et technologies de l'information et de la communication) - Cergy, 2017, Cergy-Pontoise
URL: http://www.theses.fr/2017CERG0895
► En raison du grand succès des réseaux sociaux, la nature et mode de diffusion del’information sur le Web a changé en faveur de contenus dynamiques…
(more)
▼ En raison du grand succès des réseaux sociaux, la nature et mode de diffusion del’information sur le Web a changé en faveur de contenus dynamiques diffusés sousforme de flux d’information. Dans le contexte des réseaux sociaux, les utilisateurs peuvent s’abonner à de multiples sources d’information et recevoir continuellement de nouveaux contenus. Or, ce nouveau mode de publication/consommation peut entraîner d’énormes quantités d’information, en surchargeant les utilisateurs. Ainsi,il est essentiel de développer des techniques efficaces de filtrage et de classement qui permettent aux utilisateurs d’être efficacement mis à jour avec le contenu le plus intéressant.Les requêtes top-k sur les flux d’information limitent les résultats au contenu le plus pertinent. Pour améliorer la pertinence des résultats, le modèle de classement des résultats de requêtes devrait tenir compte de divers facteurs de contexte, y compris les facteurs traditionnels basés sur le contenu, les facteurs liés aux utilisateurs et leurs relations (réseau social). Dans le réseau social, le maintien des ensembles de top-k peut être plus difficile car de nombreux événements pourraient changer les messages de top-k tels que le nouveau message, la nouvelle action, le nouvel utilisateur, les modifications de profil, etc. Pour un grand réseau social avec des millions d’utilisateurs et des milliards de messages, le traitement continu des requêtes top-k est l’approche la plus efficace. Cependant, les systèmes actuels pour le traitementcontinu des requêtes top-k échouent lorseque ces systèmes considèrent des modèles de classement riches avec des critères de réseau social. En outre, de tels systèmes ne tiennent pas compte de la diversité des contenus publiés.Dans cette thèse, nous nous concentrons sur le filtrage des flux d’information basé sur le calcul des messages top-k pour chaque utilisateur dans le réseau social. Nous visons à développer un système à large échelle capable d’évaluer efficacement les requêtes top-k continues avec une fonction de classement complexe. Nous proposons l’algorithme SANTA, capable de gérer des fonctions de classement complexes avec des critères sociaux tout en maintenant un traitement continu des requêtes top-k. Nous proposons aussi une variante (SANTA +) qui accélère le traitement d’actions dans les réseaux sociaux. Pour tenire compte de la diversité des contenus publiés, nous proposons l’algorithme DA-SANTA qui étend l’algorithme SANTA pour intégrer la diversité dans le modèle top-k continu tout en maintenant l’efficacité du système. Nos expérimentation sont menées sur des données réelles extraite de Twitter, illustrant les propriétés de nos algorithmes et de montrer leur efficacité.
Information streams provide today a prevalent way of publishing and consuming content on the Web, especially due to the great success of social networks. In the social networks context, users may subscribe to several information sources of interest and continuously receive new published content. But, this new publishing/consumption mode may…
Advisors/Committee Members: Vodislav, Christian Dan (thesis director).
Subjects/Keywords: Réseaux sociaux; Recherche d'information; Ranking; Diversification; Flux de texte; Publish/subscribe; Social network; Information retrieval; Ranking; Diversification; Text stream; Publish/subscribe
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Alkhouli, A. (2017). Traitement continu de requêtes top-k dans les réseaux sociaux : Continuous processing of top-k queries in social networks. (Doctoral Dissertation). Cergy-Pontoise. Retrieved from http://www.theses.fr/2017CERG0895
Chicago Manual of Style (16th Edition):
Alkhouli, Abdulhafiz. “Traitement continu de requêtes top-k dans les réseaux sociaux : Continuous processing of top-k queries in social networks.” 2017. Doctoral Dissertation, Cergy-Pontoise. Accessed April 13, 2021.
http://www.theses.fr/2017CERG0895.
MLA Handbook (7th Edition):
Alkhouli, Abdulhafiz. “Traitement continu de requêtes top-k dans les réseaux sociaux : Continuous processing of top-k queries in social networks.” 2017. Web. 13 Apr 2021.
Vancouver:
Alkhouli A. Traitement continu de requêtes top-k dans les réseaux sociaux : Continuous processing of top-k queries in social networks. [Internet] [Doctoral dissertation]. Cergy-Pontoise; 2017. [cited 2021 Apr 13].
Available from: http://www.theses.fr/2017CERG0895.
Council of Science Editors:
Alkhouli A. Traitement continu de requêtes top-k dans les réseaux sociaux : Continuous processing of top-k queries in social networks. [Doctoral Dissertation]. Cergy-Pontoise; 2017. Available from: http://www.theses.fr/2017CERG0895

University of Hong Kong
26.
Halepoto, Imtiaz Ali.
Scheduling and flow
control in CMT-SCTP.
Degree: 2014, University of Hong Kong
URL: http://hdl.handle.net/10722/210189
Subjects/Keywords: Stream
Control Transmission Protocol (Computer network
protocol)
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Halepoto, I. A. (2014). Scheduling and flow
control in CMT-SCTP. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/210189
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Halepoto, Imtiaz Ali. “Scheduling and flow
control in CMT-SCTP.” 2014. Thesis, University of Hong Kong. Accessed April 13, 2021.
http://hdl.handle.net/10722/210189.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Halepoto, Imtiaz Ali. “Scheduling and flow
control in CMT-SCTP.” 2014. Web. 13 Apr 2021.
Vancouver:
Halepoto IA. Scheduling and flow
control in CMT-SCTP. [Internet] [Thesis]. University of Hong Kong; 2014. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/10722/210189.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Halepoto IA. Scheduling and flow
control in CMT-SCTP. [Thesis]. University of Hong Kong; 2014. Available from: http://hdl.handle.net/10722/210189
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Hong Kong
27.
Halepoto, Imtiaz Ali.
Scheduling and flow
control in CMT-SCTP.
Degree: 2014, University of Hong Kong
URL: http://hdl.handle.net/10722/224812
► Stream Control Transmission Protocol (SCTP) is a reliable transport layer protocol that supports multihoming. An extension of the SCTP that supports simultaneous data transfer over…
(more)
▼ Stream Control Transmission Protocol (SCTP) is
a reliable transport layer protocol that supports multihoming. An
extension of the SCTP that supports simultaneous data transfer over
multiple paths is called Concurrent Multipath Transfer (CMT-SCTP),
which can achieve an aggregated transmission throughput greater
than that of a single path. The performance of CMT-SCTP in
multipath networks with dissimilar path performance characteristics
(PPCs) is challenging, especially when operating under the
constraint of a small buffer. A problem arises when the fair round
robin scheduling allows the paths of lower PPCs (slow paths) to
affect the overall transmission efficiency due to the
out-of-sequence outstanding data at the receiver. Data along the
slow and fast paths occupy the shared receiver buffer while waiting
for the out-of-sequence data, which causes performance degradation.
Therefore, an intelligent scheduling of data transmissions as well
as a proper flow control are necessary for efficient data
transfer.
I propose a flow control technique (CMT-RTTA), which
logically divides a buffer by destination and in accordance with
the corresponding RTT (round trip time). A destination with a
shorter RTT will be allowed to occupy more buffer space than those
with a longer RTT. With buffer splitting, destinations with shorter
RTTs are allowed to receive their data first.
I also propose an
algorithm for scheduling data transmissions based mainly on the
outstanding bytes (CMT-OUT). Firstly, CMT-OUT transmits data
packets to the destinations that are ranked by a proposed
Destination Selection Value (DSV) and only if the congestion and
flow control allows the transmission. Secondly, the algorithm
updates the path quality (PQU) after a successful transmission,
which is a measure of how preferable the current destination should
be selected in the next round.
The third technique (OUT-BD), I
propose is intended for heterogeneous networks having a higher
dissimilarity among the paths. For that, I use CMTOUT for
scheduling of data at the sender. For the flow control, the
technique first selects a good path based on RTT and bandwidth. For
the assumed good path, the sender is allowed to send data as long
as the buffer space is available. For the other paths, if the
transmission is allowed, the buffer size is intentionally delimited
by the one-way bandwidth-delay-product (OWBDP). This technique is
designed for those scenarios where higher OWBDP is because of the
longer propagation delay.
I established a real Internet testbed
setup, which covers a two-path and a four-path network for testing
all of the proposed techniques. The experiments show that CMT-RTTA
and CMT-OUT improved the throughput of CMT-SCTP on average by 14%
and 21% respectively when the maximum bandwidth dissimilarity is
applied. Under the same scenario, the throughput improvement on
average by OUT-BD is 59%. The mechanism in CMT-SCTP to handle the
delay dissimilarity on a simple two-path scenario is very
efficient; in the experiments on a slightly more complex four-path…
Subjects/Keywords: Stream
Control Transmission Protocol (Computer network
protocol)
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Halepoto, I. A. (2014). Scheduling and flow
control in CMT-SCTP. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/224812
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Halepoto, Imtiaz Ali. “Scheduling and flow
control in CMT-SCTP.” 2014. Thesis, University of Hong Kong. Accessed April 13, 2021.
http://hdl.handle.net/10722/224812.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Halepoto, Imtiaz Ali. “Scheduling and flow
control in CMT-SCTP.” 2014. Web. 13 Apr 2021.
Vancouver:
Halepoto IA. Scheduling and flow
control in CMT-SCTP. [Internet] [Thesis]. University of Hong Kong; 2014. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/10722/224812.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Halepoto IA. Scheduling and flow
control in CMT-SCTP. [Thesis]. University of Hong Kong; 2014. Available from: http://hdl.handle.net/10722/224812
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Tennessee – Knoxville
28.
Samu, Nicole Marie.
Spatial Discrepancies between NHDPlus and LIDAR-Derived Stream Networks.
Degree: MS, Geography, 2012, University of Tennessee – Knoxville
URL: https://trace.tennessee.edu/utk_gradthes/1202
► Many organizations demand that current water resource issues necessitate improved stream network mapping for more accurate and reliable watershed analysis and modeling results, which…
(more)
▼ Many organizations demand that current water resource issues necessitate improved
stream network mapping for more accurate and reliable watershed analysis and modeling results, which can ultimately enable better management and policy decisions.
Stream network data from the National Hydrography Dataset Plus (NHDPlus) and derived from Light Detection and Ranging (LIDAR) are each widely accepted to be of superior quality compared to many other conventional datasets. Each dataset indicates potential to improve a wide range of water resource applications; NHDPlus for its high spatial accuracy and functionality, and LIDAR-derived networks for their high resolutions. NHDPlus is publicly available and widely used; yet, until recently, high production costs and limited availability of LIDAR data have traditionally limited their widespread use in
stream network mapping for water resource applications. However, recently increasing availability and decreasing costs suggest that LIDAR-derived networks could potentially be used to improve many application initiatives.
This study analyzes spatial discrepancies between NHDPlus and LIDAR-derived
stream network datasets. Results from analyses are intended to contribute information that can lead to improved
stream network mapping and water resource applications. Mann-Whitney U and Wilcoxon-Signed Rank tests were first conducted to ascertain statistically significant types of spatial discrepancies existing between the datasets. Spatial autocorrelation analysis was then used to quantify spatial patterns of discrepancies between NHDPlus and LIDAR-derived networks. Next, Kruskal-Wallis tests were conducted to determine associations between local patterns of discrepancies and various landscape characteristics. Lastly, Spearman Rank Correlation tests were used to ascertain relationships between landscape characteristics and discrepancies between networks per catchment.
Results indicate that significant types and patterns of spatial discrepancies exist between NHDPlus and LIDAR-derived
stream network datasets, and local patterns of the discrepancies are spatially related to various landscape characteristics. These findings imply how spatial discrepancies resulting between NHDPlus and LIDAR-derived networks may lead to differing watershed analysis and modeling results. Collectively, this research contributes building fundamental information for better understanding how to improve
stream network mapping and water resource applications.
Advisors/Committee Members: Liem T. Tran, Carol P. Harden, Glenn A. Tootle.
Subjects/Keywords: LIDAR; NHDPlus; stream network; GIS; watershed; spatial analysis; Geographic Information Sciences; Geomorphology; Hydrology; Physical and Environmental Geography; Water Resource Management
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Samu, N. M. (2012). Spatial Discrepancies between NHDPlus and LIDAR-Derived Stream Networks. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/1202
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Samu, Nicole Marie. “Spatial Discrepancies between NHDPlus and LIDAR-Derived Stream Networks.” 2012. Thesis, University of Tennessee – Knoxville. Accessed April 13, 2021.
https://trace.tennessee.edu/utk_gradthes/1202.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Samu, Nicole Marie. “Spatial Discrepancies between NHDPlus and LIDAR-Derived Stream Networks.” 2012. Web. 13 Apr 2021.
Vancouver:
Samu NM. Spatial Discrepancies between NHDPlus and LIDAR-Derived Stream Networks. [Internet] [Thesis]. University of Tennessee – Knoxville; 2012. [cited 2021 Apr 13].
Available from: https://trace.tennessee.edu/utk_gradthes/1202.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Samu NM. Spatial Discrepancies between NHDPlus and LIDAR-Derived Stream Networks. [Thesis]. University of Tennessee – Knoxville; 2012. Available from: https://trace.tennessee.edu/utk_gradthes/1202
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Kansas State University
29.
Thornbrugh, Darren Jay.
Influence of
stream connectance and network spatial position on fish assemblage
structure in the Kansas River basin, USA.
Degree: MS, Department of Biology, 2007, Kansas State University
URL: http://hdl.handle.net/2097/535
► Stream networks provide complex habitats for fish assemblages that can vary gradually along a gradient of stream size or abruptly at transition zones between large…
(more)
▼ Stream networks provide complex habitats for fish
assemblages that can vary gradually along a gradient of
stream size
or abruptly at transition zones between large rivers and their
tributaries. We evaluated the relative importance of these gradual
and abrupt habitat transitions in regulating
stream fish
assemblages by quantifying roles of
stream size and spatial
position within a drainage
network as a determinant of fish
assemblage structure within the Kansas River basin, KS. We
predicted fish assemblage structure to generally be dependent on
stream size and that smaller streams would be influenced by their
connectance to larger mainstem rivers. Fishes in the Kansas River
basin varied along a gradient of
stream size and longitude, and
after controlling for these effects, there was evidence that
connectivity to a larger river influenced species richness and
assemblage structure. In 1st order streams there was an increase in
species richness with increasing distance from a mainstem
confluence and species composition in larger tributaries (i.e., 4th
order streams) varied with proximity to the mainstem river. We also
found an increase in species richness at sites located on smaller
tributaries connected to a larger downstream mainstem. Species
composition in 1st and 4th order streams also varied with
connectance to the mainstem river. Within three intensively sampled
tributaries, there was an abrupt change in fish fauna between the
Kansas River and sample sites above the confluence, but only
gradual change in assemblage structure within each tributary with a
high degree of seasonal variation. In the first 20
stream km of
these three mainstem tributaries adult fishes were more structured
along a gradient away from the mainstem river than juveniles,
potentially suggesting more generalized habitat needs of juvenile
fishes. At the spatial and temporal scale of our analysis, it
appeared the effects of large rivers on tributary streams were
generally localized. However, the documented influence of spatial
position suggests movements between habitats could regulate
community level dynamics as well as individual species over longer
temporal scales.
Advisors/Committee Members: Keith B. Gido.
Subjects/Keywords: fish;
stream;
connectance;
assemblage;
structure;
network; Biology, Ecology (0329)
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Thornbrugh, D. J. (2007). Influence of
stream connectance and network spatial position on fish assemblage
structure in the Kansas River basin, USA. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/535
Chicago Manual of Style (16th Edition):
Thornbrugh, Darren Jay. “Influence of
stream connectance and network spatial position on fish assemblage
structure in the Kansas River basin, USA.” 2007. Masters Thesis, Kansas State University. Accessed April 13, 2021.
http://hdl.handle.net/2097/535.
MLA Handbook (7th Edition):
Thornbrugh, Darren Jay. “Influence of
stream connectance and network spatial position on fish assemblage
structure in the Kansas River basin, USA.” 2007. Web. 13 Apr 2021.
Vancouver:
Thornbrugh DJ. Influence of
stream connectance and network spatial position on fish assemblage
structure in the Kansas River basin, USA. [Internet] [Masters thesis]. Kansas State University; 2007. [cited 2021 Apr 13].
Available from: http://hdl.handle.net/2097/535.
Council of Science Editors:
Thornbrugh DJ. Influence of
stream connectance and network spatial position on fish assemblage
structure in the Kansas River basin, USA. [Masters Thesis]. Kansas State University; 2007. Available from: http://hdl.handle.net/2097/535

University of New Mexico
30.
Burnett, Benjamin Newell.
Fluvial Geomorphic and Hydrologic Evolution and Climate Change Resilience in Young Volcanic Landscapes: Rhyolite Plateau and Lamar Valley, Yellowstone National Park.
Degree: Department of Earth and Planetary Sciences, 2020, University of New Mexico
URL: https://digitalrepository.unm.edu/eps_etds/275
► Quaternary volcanism associated with the last caldera cycle in Yellowstone National Park included emplacement of ash-flow tuffs, massive rhyolite flows ranging from 79 to…
(more)
▼ Quaternary volcanism associated with the last caldera cycle in Yellowstone National Park included emplacement of ash-flow tuffs, massive rhyolite flows ranging from 79 to 484 ka, and valley-filling basalts. This study examines (1) the evolution of spring hydrology with flow age on the Rhyolite Plateau, (2) initial development and evolution of
stream networks on the rhyolite flows, and (3) the impact of the 630 ka caldera formation and volcanic flow emplacement on Lamar Valley incision rates.
Integrated
stream networks formed within 79 kyr on the Rhyolite Plateau. Incision is focused on steep flow margins and knickpoints and is dependent on local
stream power. Plugging of fractures causes hydraulic conductivity of the flows to decline over time. Snowmelt infiltrates rapidly into younger flows, leaving ephemeral surface streams, but many flow-margin springs experience a delayed snowmelt response and enhanced discharge during late-summer periods of water stress, providing important refugia for aquatic organisms threatened by climate change.
Incision rates over the past 630 kyr in the Lamar Valley are greatest (≤ 0.55 mm/yr) where the greatest thickness of Quaternary volcanic material was emplaced, where they are higher than most rivers in the region. Incision rates are lowest (≤ 0.15 mm/yr) above a knickpoint caused by erosion resistant crystalline bedrock, and in the upper reaches of two tributaries, where I infer that faulting associated with caldera formation led to
stream capture of portions of the headwater areas.
Advisors/Committee Members: Grant Meyer, Peter Fawcett, Leslie McFadden, Julia Coonrod.
Subjects/Keywords: Yellowstone; National Parks; Geomorphology; Hydrology; Climate Change; Landscape Evolution; Incision; Ecology; Volcano; Stream Network; Geology; Geomorphology; Hydrology
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Burnett, B. N. (2020). Fluvial Geomorphic and Hydrologic Evolution and Climate Change Resilience in Young Volcanic Landscapes: Rhyolite Plateau and Lamar Valley, Yellowstone National Park. (Doctoral Dissertation). University of New Mexico. Retrieved from https://digitalrepository.unm.edu/eps_etds/275
Chicago Manual of Style (16th Edition):
Burnett, Benjamin Newell. “Fluvial Geomorphic and Hydrologic Evolution and Climate Change Resilience in Young Volcanic Landscapes: Rhyolite Plateau and Lamar Valley, Yellowstone National Park.” 2020. Doctoral Dissertation, University of New Mexico. Accessed April 13, 2021.
https://digitalrepository.unm.edu/eps_etds/275.
MLA Handbook (7th Edition):
Burnett, Benjamin Newell. “Fluvial Geomorphic and Hydrologic Evolution and Climate Change Resilience in Young Volcanic Landscapes: Rhyolite Plateau and Lamar Valley, Yellowstone National Park.” 2020. Web. 13 Apr 2021.
Vancouver:
Burnett BN. Fluvial Geomorphic and Hydrologic Evolution and Climate Change Resilience in Young Volcanic Landscapes: Rhyolite Plateau and Lamar Valley, Yellowstone National Park. [Internet] [Doctoral dissertation]. University of New Mexico; 2020. [cited 2021 Apr 13].
Available from: https://digitalrepository.unm.edu/eps_etds/275.
Council of Science Editors:
Burnett BN. Fluvial Geomorphic and Hydrologic Evolution and Climate Change Resilience in Young Volcanic Landscapes: Rhyolite Plateau and Lamar Valley, Yellowstone National Park. [Doctoral Dissertation]. University of New Mexico; 2020. Available from: https://digitalrepository.unm.edu/eps_etds/275
◁ [1] [2] [3] ▶
.