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University of Helsinki

1. Osborne, Nathaniel. Forest Harvest Residuals : A Composite Report of Five Years of Research in the Southern United States and Sweden.

Degree: Department of Forest Sciences; Helsingfors universitet, Agrikultur- och forstvetenskapliga fakulteten, Institutionen för skogsvetenskaper, 2013, University of Helsinki

URL: http://hdl.handle.net/10138/42187

Increasing fossil fuel prices, concerns about domestic energy security and demand for environmentally friendly, low carbon energy sources are renewing interest in using wood for energy. State and federal government have responded to increased interest with legislation that promotes renewable energy. Logging residues important role as an energy feedstock and environmental component has been a central topic of discussion for the growing forest energy sector in the United States. Over the last five years, I have studied forest harvest residues in the southern United States and abroad. My principle research focus has been the rapid inventory of residues, determination of their stocking and the identification of factors influencing that stocking. This composite report provides a detailed account of three studies based on five years of data in North Carolina, Georgia and southern Sweden. Provided in the report is an adapted method to inventory scattered and piled forest harvest residues, the relationship of harvest residues and harvest systems and a wood energy recovery rate for low end biomass within intensively managed loblolly pine forests. The goal of providing these studies is to contribute useful observations to the ongoing discussion about forest harvest residues and to provide a sampling framework others can employ to do similar studies.

Subjects/Keywords: wood energy; biometrics; bioenergy; mensuration; variable plot radius sampling; Skoglig ekologi och resurshushållning; Forest Ecology and Management; Metsien ekologia ja käyttö

Record Details Similar Records

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^{th} Edition):

Osborne, N. (2013). Forest Harvest Residuals : A Composite Report of Five Years of Research in the Southern United States and Sweden. (Masters Thesis). University of Helsinki. Retrieved from http://hdl.handle.net/10138/42187

Chicago Manual of Style (16^{th} Edition):

Osborne, Nathaniel. “Forest Harvest Residuals : A Composite Report of Five Years of Research in the Southern United States and Sweden.” 2013. Masters Thesis, University of Helsinki. Accessed December 06, 2019. http://hdl.handle.net/10138/42187.

MLA Handbook (7^{th} Edition):

Osborne, Nathaniel. “Forest Harvest Residuals : A Composite Report of Five Years of Research in the Southern United States and Sweden.” 2013. Web. 06 Dec 2019.

Vancouver:

Osborne N. Forest Harvest Residuals : A Composite Report of Five Years of Research in the Southern United States and Sweden. [Internet] [Masters thesis]. University of Helsinki; 2013. [cited 2019 Dec 06]. Available from: http://hdl.handle.net/10138/42187.

Council of Science Editors:

Osborne N. Forest Harvest Residuals : A Composite Report of Five Years of Research in the Southern United States and Sweden. [Masters Thesis]. University of Helsinki; 2013. Available from: http://hdl.handle.net/10138/42187

Carnegie Mellon University

2. Kang, U. Mining Tera-Scale Graphs: Theory, Engineering and Discoveries.

Degree: 2012, Carnegie Mellon University

URL: http://repository.cmu.edu/dissertations/160

How do we find patterns and anomalies, on graphs with billions of nodes and edges, which do not fit in memory? How to use parallelism for such Tera- or Peta-scale graphs? In this thesis, we propose PEGASUS, a large scale graph mining system implemented on the top of the HADOOP platform, the open source version of MAPREDUCE. PEGASUS includes algorithms which help us spot patterns and anomalous behaviors in large graphs.
PEGASUS enables the structure analysis on large graphs. We unify many different structure analysis algorithms, including the analysis on connected components, PageRank, and radius/diameter, into a general primitive called GIM-V. GIM-V is highly optimized, achieving good scale-up on the number of edges and available machines. We discover surprising patterns using GIM-V, including the 7-degrees of separation in one of the largest publicly available Web graphs, with 7 billion edges.
PEGASUS also enables the inference and the spectral analysis on large graphs. We design an efficient distributed belief propagation algorithm which infer the states of unlabeled nodes given a set of labeled nodes. We also develop an eigensolver for computing top k eigenvalues and eigenvectors of the adjacency matrices of very large graphs. We use the eigensolver to discover anomalous adult advertisers in the who-follows-whom Twitter graph with 3 billion edges. In addition, we develop an efficient tensor decomposition algorithm and use it to analyze a large knowledge base tensor.
Finally, PEGASUS allows the management of large graphs. We propose efficient graph storage and indexing methods to answer graph mining queries quickly. We also develop an edge layout algorithm for better compressing graphs.

Subjects/Keywords: graph mining; MAPREDUCE; HADOOP; graph structure analysis; radius plot; diameter; connected component; inference; spectral graph analysis; eigensolver; tensor analysis; graph management; graph indexing; graph compression; Computer Sciences

Record Details Similar Records

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^{th} Edition):

Kang, U. (2012). Mining Tera-Scale Graphs: Theory, Engineering and Discoveries. (Thesis). Carnegie Mellon University. Retrieved from http://repository.cmu.edu/dissertations/160

Note: this citation may be lacking information needed for this citation format:

Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^{th} Edition):

Kang, U. “Mining Tera-Scale Graphs: Theory, Engineering and Discoveries.” 2012. Thesis, Carnegie Mellon University. Accessed December 06, 2019. http://repository.cmu.edu/dissertations/160.

Note: this citation may be lacking information needed for this citation format:

Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^{th} Edition):

Kang, U. “Mining Tera-Scale Graphs: Theory, Engineering and Discoveries.” 2012. Web. 06 Dec 2019.

Vancouver:

Kang U. Mining Tera-Scale Graphs: Theory, Engineering and Discoveries. [Internet] [Thesis]. Carnegie Mellon University; 2012. [cited 2019 Dec 06]. Available from: http://repository.cmu.edu/dissertations/160.

Note: this citation may be lacking information needed for this citation format:

Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kang U. Mining Tera-Scale Graphs: Theory, Engineering and Discoveries. [Thesis]. Carnegie Mellon University; 2012. Available from: http://repository.cmu.edu/dissertations/160

Not specified: Masters Thesis or Doctoral Dissertation

3. Tatsumi, Jason. On the Analysis and Design of Disturbance Rejecter.

Degree: MSin Electrical Engineering, Fenn College of Engineering, 2013, Cleveland State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=csu1386946867

In this thesis, the impact of the disturbance rejecter
concept and the enforced plant has been explored. In order for the
active disturbance rejection controller (ADRC) to provide a
reasonable alternative to the industry standard PID controller, it
is necessary to develop tuning procedures capable of providing
adequate performance with reasonable stability margins. A focus
should be placed upon the disturbance rejecter, as it is the heart
and soul of ADRC. In this thesis, transfer function analysis of the
enforced plant has been performed to connect ADRC with the tools
from classical control. The relationship between the gain parameter
and observer bandwidth are studied to understand why higher
bandwidths are attainable with smaller gains. A root locus
technique demonstrates how the plant roots change with observer
bandwidth. The Nyquist stability criterion is used to offer tuning
methods that satisfy gain and phase margins and ensures a transient
that satisfies a given damping requirement. A technique is offered
to display the infinite radius encirclements of the Nyquist plot
within a finite graph. Analysis is performed on why the controlled
response is typically slower than desired and how to correct
it.
*Advisors/Committee Members: Gao, Zhiqiang (Committee Chair).*

Subjects/Keywords: Electrical Engineering; Engineering; active disturbance rejection control; stability margin design; closed-loop damping; infinite radius Nyquist plot; enforced plant; root locus

…44
5.3
Generating the Infinite *Radius* Nyquist *Plot*… …85
C.
MATLAB Functions for Infinite *Radius* Nyquist *Plot*… …37
V. NYQUIST PLOTS WITH INFINITE *RADIUS*… …41
5.1
Measuring the Angle of an Infinite *Radius* Arc… …71
Figure 38:
Shaping *plot* of Gps/b0…

Record Details Similar Records

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^{th} Edition):

Tatsumi, J. (2013). On the Analysis and Design of Disturbance Rejecter. (Masters Thesis). Cleveland State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=csu1386946867

Chicago Manual of Style (16^{th} Edition):

Tatsumi, Jason. “On the Analysis and Design of Disturbance Rejecter.” 2013. Masters Thesis, Cleveland State University. Accessed December 06, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=csu1386946867.

MLA Handbook (7^{th} Edition):

Tatsumi, Jason. “On the Analysis and Design of Disturbance Rejecter.” 2013. Web. 06 Dec 2019.

Vancouver:

Tatsumi J. On the Analysis and Design of Disturbance Rejecter. [Internet] [Masters thesis]. Cleveland State University; 2013. [cited 2019 Dec 06]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=csu1386946867.

Council of Science Editors:

Tatsumi J. On the Analysis and Design of Disturbance Rejecter. [Masters Thesis]. Cleveland State University; 2013. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=csu1386946867