You searched for subject:(reversible).
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1.
Banerjee, Anindita.
Synthesis, optimization and testing of reversible and
quantum circuits.
Degree: 2011, INFLIBNET
URL: http://shodhganga.inflibnet.ac.in/handle/10603/2425 
► In the present thesis we have studied reversible and quantum circuits. A new algorithm for optimization of quantum cost of classical reversible and quantum circuits…
(more)
▼ In the present thesis we have studied reversible
and quantum circuits. A new algorithm for optimization of quantum
cost of classical reversible and quantum circuits has been
proposed. The quantum costs obtained using the proposed algorithm
is compared with the existing results. It is found that the
algorithm produces optimal quantum cost in all the cases. We have
emphasized on the fact that a gate count obtained using New gates
cannot be used as a measure of circuit complexity in classical
reversible circuit. Therefore, designing circuits from a standard
gate library is important for implementation and comparison
purpose. All the reversible circuits reported here are designed
using NCT gate library and systematic protocol for comparison of
circuits prepared in di_erent gate libraries have been developed.
We have proposed a design for reversible 4-bit multiplier circuit
having minimum number of garbage bits, optimal gate count and
optimal quantum cost. We have also calculated the linear transistor
cost of the proposed reversible multiplier. We have shown that the
HNG, TSG and MKG gates proposed for designing of a component of
multiplier circuit (Full Adder) are neither essential nor
advantageous and many such 4-bit universal gates may be proposed
which can also work as Full Adder. As example three such New gates
have been presented here. We have proposed minimal sequential
reversible circuits from NCT gate library.
References p. 135-149, Synopsis p.
151-170
Advisors/Committee Members: Pathak, Anirban.
Subjects/Keywords: Physics; Reversible cryptography hardware; Quantum cost; Quantum information processing; Reversible circuit model; Reversible gate
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APA (6th Edition):
Banerjee, A. (2011). Synthesis, optimization and testing of reversible and
quantum circuits. (Thesis). INFLIBNET. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/2425
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):
Banerjee, Anindita. “Synthesis, optimization and testing of reversible and
quantum circuits.” 2011. Thesis, INFLIBNET. Accessed January 17, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/2425.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Banerjee, Anindita. “Synthesis, optimization and testing of reversible and
quantum circuits.” 2011. Web. 17 Jan 2021.
Vancouver:
Banerjee A. Synthesis, optimization and testing of reversible and
quantum circuits. [Internet] [Thesis]. INFLIBNET; 2011. [cited 2021 Jan 17].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/2425.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Banerjee A. Synthesis, optimization and testing of reversible and
quantum circuits. [Thesis]. INFLIBNET; 2011. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/2425
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
McMaster University
2.
Gao, Yuan.
DEVELOPMENT OF POLYOLEFIN-BASED MULTIPLE AND REVERSIBLE SHAPE MEMORY POLYMERS.
Degree: PhD, 2019, McMaster University
URL: http://hdl.handle.net/11375/25067
► A shape memory polymer (SMP) is stimuli-responsive with the fantastic capacity to “memorize” a temporary shape under certain conditions and to recover to its permanent…
(more)
▼ A shape memory polymer (SMP) is stimuli-responsive with the fantastic capacity to “memorize” a temporary shape under certain conditions and to recover to its permanent shape upon exposure to certain external stimulus (e.g. heat, light, electromagnetic field). In the past few decades, various SMPs have been investigated and applied in the area of aerospace, biomedicine, and textiles, etc. Recently, a special type of SMP called a ‘two-way reversible shape memory polymer’ or ‘reversible shape memory polymer’ (RSMP) capable of transitioning between two temporary shapes without the need for reprogramming after each change has attracted the attention of many researchers. In this class of polymer, the semicrystalline RSMP was studied considerably due to the various chain structures produced by relatively simple synthesis routes. The crystallization-induced elongation (CIE) and melting-induced contraction (MIC) of the oriented crystal domains has been theorized as the main mechanism of semicrystalline RSMP. However, most RSMPs are predominantly thermosets, which implies significant drawbacks regarding reprocessing and recycling.
This thesis focuses on the development of RSMP based on polyolefin materials, especially novel high-performance polyolefin elastomers, due to the advantages of high crystallizability, varying chain structures, tunable and broad melting transitions, and low cost. The thesis starts off by demonstrating the reversible shape memory effect (RSME) of the thermoplastic ethylene/1-octene diblock copolymer, which contains the ethylene-rich hard segments and the 1-octene-rich soft segments. The delicately designed chain structure exhibited a broad melting transition and strong physical crosslinks, which contributed to the resulting RSME and the CIE/MIC effect at load-free conditions. Furthermore, the commercially available polyolefin elastomer blends demonstrated the RSME. The utilization of commercial products and simple processing method to achieve a thermoplastic RSMP offers easy production in large scale and low costs. The second part of the thesis developed a polyolefin-based RSMP with reconfigurable network by introducing a transesterification catalyst into a crosslinked poly(ethylene-co-vinyl acetate). The network reconfiguration achieved a dynamic covalent polymer network by breaking the ester bonds and reconnecting. The third part of the thesis explored a new RSMP foam material developed by utilizing polyolefins. The polyolefin elastomers of differing compositions were blended and foamed to fabricate the porous structure. The RSME in a load-free condition was then demonstrated successfully. This thesis represents significant progress in the development of polyolefin-based RSMPs, outlining new structural design, processability improvements, and potential applications.
Thesis
Doctor of Philosophy (PhD)
Shape memory polymer (SMP) is stimuli-responsive capable of “memorizing” a temporary shape and yet recovering to its permanent shape upon a certain external trigger. SMPs are widely studied and…
Advisors/Committee Members: Zhu, Shiping, Thompson, Michael, Chemical Engineering.
Subjects/Keywords: reversible shape memory polymer; polyolefin
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APA (6th Edition):
Gao, Y. (2019). DEVELOPMENT OF POLYOLEFIN-BASED MULTIPLE AND REVERSIBLE SHAPE MEMORY POLYMERS. (Doctoral Dissertation). McMaster University. Retrieved from http://hdl.handle.net/11375/25067
Chicago Manual of Style (16th Edition):
Gao, Yuan. “DEVELOPMENT OF POLYOLEFIN-BASED MULTIPLE AND REVERSIBLE SHAPE MEMORY POLYMERS.” 2019. Doctoral Dissertation, McMaster University. Accessed January 17, 2021.
http://hdl.handle.net/11375/25067.
MLA Handbook (7th Edition):
Gao, Yuan. “DEVELOPMENT OF POLYOLEFIN-BASED MULTIPLE AND REVERSIBLE SHAPE MEMORY POLYMERS.” 2019. Web. 17 Jan 2021.
Vancouver:
Gao Y. DEVELOPMENT OF POLYOLEFIN-BASED MULTIPLE AND REVERSIBLE SHAPE MEMORY POLYMERS. [Internet] [Doctoral dissertation]. McMaster University; 2019. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/11375/25067.
Council of Science Editors:
Gao Y. DEVELOPMENT OF POLYOLEFIN-BASED MULTIPLE AND REVERSIBLE SHAPE MEMORY POLYMERS. [Doctoral Dissertation]. McMaster University; 2019. Available from: http://hdl.handle.net/11375/25067
University of Ontario Institute of Technology
3.
Hammill, Matthew.
The synthesis and in vitro evaluation of chemically modified siRNAs that contain internal azobenzene derivative spacers for selective and tunable photocontrol of activity.
Degree: 2017, University of Ontario Institute of Technology
URL: http://hdl.handle.net/10155/836
► Short interfering RNAs (siRNAs) are biopolymers that are used as post-transcriptional gene regulators and as a natural endogenous defense against attack from viruses. These molecules…
(more)
▼ Short interfering RNAs (siRNAs) are biopolymers that are used as post-transcriptional gene regulators and as a natural endogenous defense against attack from viruses. These molecules hold a great deal of interest as pharmaceuticals for the knockdown of unregulated genes, such as in cancers. Through chemical modification of the RNA structure, inherent limitations can be overcome to make better pharmaceuticals. This study investigated the incorporation of azobenzene derivative spacers into the RNA backbone replacing 2 base pairs. A small library of siRNAs were synthesized and then characterized bio-physically through several means. After bio-physical characterization, these siRNAs were tested in vitro against firefly luciferase in order to determine gene silencing efficacy. The ability of these azobenzene siRNAs to be controlled with light was then investigated. Our results indicate that these modifications are well tolerated within the RNAi pathway and have a robust ability to be activated and inactivated with UV (ultraviolet) and visible light to control gene silencing.
Advisors/Committee Members: Desaulniers, Jean-Paul.
Subjects/Keywords: siRNA; Azobenzene; Photochemical; Reversible
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APA (6th Edition):
Hammill, M. (2017). The synthesis and in vitro evaluation of chemically modified siRNAs that contain internal azobenzene derivative spacers for selective and tunable photocontrol of activity. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/836
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):
Hammill, Matthew. “The synthesis and in vitro evaluation of chemically modified siRNAs that contain internal azobenzene derivative spacers for selective and tunable photocontrol of activity.” 2017. Thesis, University of Ontario Institute of Technology. Accessed January 17, 2021.
http://hdl.handle.net/10155/836.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hammill, Matthew. “The synthesis and in vitro evaluation of chemically modified siRNAs that contain internal azobenzene derivative spacers for selective and tunable photocontrol of activity.” 2017. Web. 17 Jan 2021.
Vancouver:
Hammill M. The synthesis and in vitro evaluation of chemically modified siRNAs that contain internal azobenzene derivative spacers for selective and tunable photocontrol of activity. [Internet] [Thesis]. University of Ontario Institute of Technology; 2017. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10155/836.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hammill M. The synthesis and in vitro evaluation of chemically modified siRNAs that contain internal azobenzene derivative spacers for selective and tunable photocontrol of activity. [Thesis]. University of Ontario Institute of Technology; 2017. Available from: http://hdl.handle.net/10155/836
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Lethbridge
4.
University of Lethbridge. Faculty of Arts and Science.
Synthesis, testing and tolerance in reversible logic
.
Degree: 2017, University of Lethbridge
URL: http://hdl.handle.net/10133/5022
► In recent years, reversible computing has established itself as a promising research area and emerging technology. This thesis focuses on three important areas of reversible…
(more)
▼ In recent years, reversible computing has established itself as a promising research area and emerging technology. This thesis focuses on three important areas of reversible logic, which is an area of reversible computing. Firstly, this thesis proposes a transformation based synthesis approach for realizing conservative reversible functions using SWAP and Fredkin gates. This thesis also proposes ten templates for optimizing SWAP and Fredkin gates-based reversible circuits. Secondly, this thesis proposes an approach for the design of online testable reversible circuits. A reversible circuit composed of NOT, CNOT and Toffoli gates can be made online testable by adding two sets of CNOT gates and a single parity line. Finally, we have proposed an approach to achieve fault tolerance in reversible circuits. A design of a 3-bit reversible majority voter circuit is presented. This voter circuit can be used to design fault tolerant reversible circuits.
Subjects/Keywords: Reversible computing;
Dissertations, Academic
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APA (6th Edition):
Science, U. o. L. F. o. A. a. (2017). Synthesis, testing and tolerance in reversible logic
. (Thesis). University of Lethbridge. Retrieved from http://hdl.handle.net/10133/5022
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):
Science, University of Lethbridge. Faculty of Arts and. “Synthesis, testing and tolerance in reversible logic
.” 2017. Thesis, University of Lethbridge. Accessed January 17, 2021.
http://hdl.handle.net/10133/5022.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Science, University of Lethbridge. Faculty of Arts and. “Synthesis, testing and tolerance in reversible logic
.” 2017. Web. 17 Jan 2021.
Vancouver:
Science UoLFoAa. Synthesis, testing and tolerance in reversible logic
. [Internet] [Thesis]. University of Lethbridge; 2017. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10133/5022.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Science UoLFoAa. Synthesis, testing and tolerance in reversible logic
. [Thesis]. University of Lethbridge; 2017. Available from: http://hdl.handle.net/10133/5022
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Waterloo
5.
Parent, Alex.
The Compilation of Reversible Circuits and a New Optimization Game.
Degree: 2016, University of Waterloo
URL: http://hdl.handle.net/10012/10949
► The focus of this thesis is reversible circuit compilation. We will explore the use of pebble games for circuit analysis. The usefulness of this technique…
(more)
▼ The focus of this thesis is reversible circuit compilation.
We will explore the use of pebble games for circuit analysis. The usefulness of this
technique is demonstrated by finding a new space bound for the Karatsuba algorithm and
more generally for any similar algorithm based on recurrence relations. A new pebble game
based on the reversible pebble game which better captures the use of in-place operations is
also presented. We also construct circuit to compute trigonometric functions based on the
CORDIC algorithm and analyze it using this game.
Subjects/Keywords: Pebble Games; Reversible Circuits
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APA ·
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APA (6th Edition):
Parent, A. (2016). The Compilation of Reversible Circuits and a New Optimization Game. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/10949
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):
Parent, Alex. “The Compilation of Reversible Circuits and a New Optimization Game.” 2016. Thesis, University of Waterloo. Accessed January 17, 2021.
http://hdl.handle.net/10012/10949.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Parent, Alex. “The Compilation of Reversible Circuits and a New Optimization Game.” 2016. Web. 17 Jan 2021.
Vancouver:
Parent A. The Compilation of Reversible Circuits and a New Optimization Game. [Internet] [Thesis]. University of Waterloo; 2016. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10012/10949.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Parent A. The Compilation of Reversible Circuits and a New Optimization Game. [Thesis]. University of Waterloo; 2016. Available from: http://hdl.handle.net/10012/10949
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
6.
Kuo, Jui-Ming.
A Location-Map Free Reversible Watermarking With Capacity Control.
Degree: Master, Computer Science and Engineering, 2014, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0613114-110358
► Reversible watermarking techniques enable the extraction of the embedding bits from a watermarked image in a lossless way. It exploits the high spatial correlation among…
(more)
▼ Reversible watermarking techniques enable the extraction of the embedding bits from a watermarked image in a lossless way. It exploits the high spatial correlation among neighboring pixels. Application in
reversible watermarking includes military and medical images. However, images occurs overflow or underflow problems during the imbedding process. Since pixels value may out of range between [0:255]. Most methods require a location map to solve such problems.
In this study, we propose a location map free
reversible watermarking algorithm, firstly a prediction threshold value is computed, histogram shifting scheme based on the prediction threshold value to solve overflow and underflow problems, secondly another threshold value is adopted to achieve capacity control, image quality is better in different payload length with this control.
The experimental results reveal that the performance of our proposed method outperforms that proposed by FUJIYOSHI et al. For example, with the same imbedding capacity, the PSNR of our scheme is higher than FUJIYOSHI et al. about 3 dB. Furthermore, our algorithm provides higher embedding capacity compare with FUJIYOSHI et al.
Advisors/Committee Members: Wen-Shyong Hsieh (committee member), Yuh-Ming Cheng (chair), Lung-Jen Wang (chair), Chung-Nan Lee (chair).
Subjects/Keywords: prediction error; watermarking; histogram shifting; reversible watermarking
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APA (6th Edition):
Kuo, J. (2014). A Location-Map Free Reversible Watermarking With Capacity Control. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0613114-110358
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):
Kuo, Jui-Ming. “A Location-Map Free Reversible Watermarking With Capacity Control.” 2014. Thesis, NSYSU. Accessed January 17, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0613114-110358.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kuo, Jui-Ming. “A Location-Map Free Reversible Watermarking With Capacity Control.” 2014. Web. 17 Jan 2021.
Vancouver:
Kuo J. A Location-Map Free Reversible Watermarking With Capacity Control. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Jan 17].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0613114-110358.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kuo J. A Location-Map Free Reversible Watermarking With Capacity Control. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0613114-110358
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
7.
Chen, Nan-Tung.
Reversible Watermarking Using Multi-Prediction values.
Degree: Master, Computer Science and Engineering, 2011, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720111-165538
► Reversible watermarking techniques extract the watermark and recover the original image from the watermarked image without any distortion. They have been applied for those sensitive…
(more)
▼ Reversible watermarking techniques extract the watermark and recover the original image from the watermarked image without any distortion. They have been applied for those sensitive fields, such as the medicine and the military. In this thesis, a novel watermarking algorithm using multi-prediction values has been proposed. It exploits the correlation between the original pixel and the neighboring pixels to obtain twelve prediction candidates, and then selects a candidate as the prediction value according to the original pixel and the temporary prediction value. Due to the algorithm use the original pixel as one of the parameters to decide the prediction value, our prediction values are obtained with great precision.
The experimental results reveal that the performance of our proposed method outperforms that proposed by Sachnev. For example the variance of the prediction errors histogram obtained by the proposed method is less than that obtained by the algorithm proposed by Sachnev et al. about 44.2%; the mean PSNR greater than about 1.47 dB and 1.1 dB under the watermark capacity 0~0.04 bpp and 0.04~0.5 bpp, respectively. Therefore, the proposed method is especially appropriate for embedding watermark in low or medium capacity.
Keywordï¼
reversible watermarking, watermarking, prediction, histogram shifting.
Advisors/Committee Members: Chung-Huang Yang (chair), Wen-Shyong Hsieh (committee member), Lung-Jen Wang (chair), Ming-Chao Chiang (chair).
Subjects/Keywords: histogram shifting; prediction; watermarking; reversible watermarking
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APA ·
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APA (6th Edition):
Chen, N. (2011). Reversible Watermarking Using Multi-Prediction values. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720111-165538
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, Nan-Tung. “Reversible Watermarking Using Multi-Prediction values.” 2011. Thesis, NSYSU. Accessed January 17, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720111-165538.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Nan-Tung. “Reversible Watermarking Using Multi-Prediction values.” 2011. Web. 17 Jan 2021.
Vancouver:
Chen N. Reversible Watermarking Using Multi-Prediction values. [Internet] [Thesis]. NSYSU; 2011. [cited 2021 Jan 17].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720111-165538.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen N. Reversible Watermarking Using Multi-Prediction values. [Thesis]. NSYSU; 2011. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720111-165538
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Toronto
8.
Irany, Behrang Mehrbany.
A High Capacity Reversible Multiple Watermarking Scheme - applications to Images, Medical Data, and Biometrics.
Degree: 2011, University of Toronto
URL: http://hdl.handle.net/1807/29530
► Modern technologies have eased the way for adversaries to bypass the conventional identity authentication and identification processes; hence security systems have been developed to a…
(more)
▼ Modern technologies have eased the way for adversaries to bypass the conventional identity authentication and identification processes; hence security systems have been developed to a great extent for protection of privacy and security of identities in different applications. The focus of this thesis is digital watermarking, security and privacy, as well as the ability to employ electrocardiogram as a method to enhance the security and privacy level. A high capacity reversible multiple watermarking scheme is introduced to mainly target the medical images. Furthermore, the use of ECG biometric signals in the form of the embedded watermark is studied. Experimental results indicate that the reversible data hiding scheme outperforms other approaches in the literature in terms of payload capacity and marked image quality. Results from the ECG mark embedding also show that no major degradation in performance is noticeable compared to the case where no watermarking is needed.
MAST
Advisors/Committee Members: Hatzinakos, Dimitrios, Electrical and Computer Engineering.
Subjects/Keywords: Reversible watermarking; integer wavelet transform watermarking; 0544
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APA (6th Edition):
Irany, B. M. (2011). A High Capacity Reversible Multiple Watermarking Scheme - applications to Images, Medical Data, and Biometrics. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/29530
Chicago Manual of Style (16th Edition):
Irany, Behrang Mehrbany. “A High Capacity Reversible Multiple Watermarking Scheme - applications to Images, Medical Data, and Biometrics.” 2011. Masters Thesis, University of Toronto. Accessed January 17, 2021.
http://hdl.handle.net/1807/29530.
MLA Handbook (7th Edition):
Irany, Behrang Mehrbany. “A High Capacity Reversible Multiple Watermarking Scheme - applications to Images, Medical Data, and Biometrics.” 2011. Web. 17 Jan 2021.
Vancouver:
Irany BM. A High Capacity Reversible Multiple Watermarking Scheme - applications to Images, Medical Data, and Biometrics. [Internet] [Masters thesis]. University of Toronto; 2011. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1807/29530.
Council of Science Editors:
Irany BM. A High Capacity Reversible Multiple Watermarking Scheme - applications to Images, Medical Data, and Biometrics. [Masters Thesis]. University of Toronto; 2011. Available from: http://hdl.handle.net/1807/29530
9.
Lynas, Angel Robert.
Expressive reversible language : aspects of semantics and implementation.
Degree: PhD, 2011, Teesside University
URL: https://research.tees.ac.uk/en/studentTheses/dd3e1faf-3c53-4dc4-ba1c-73e412c865a3
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533580
► In this thesis we investigate some of the issues involved in creating a reversible variant of the formal software development language B. We consider the…
(more)
▼ In this thesis we investigate some of the issues involved in creating a reversible variant of the formal software development language B. We consider the effects of regarding computation as a potentially reversible process, yielding a number of new programming structures which we integrate into an implementation-level language RB0, a more expressive variant of B0, the current implementation-level language for B. Since reversibility simplifies garbage collection, in RB0 we make use of more abstract, set-based data types, normally available in B only at the specification level. Similarly, we propose extending the domain of abstract functions currently specifiable in B to allow them to become concrete functions, thereby furnishing B with a functional sub-language. We also investigate expanding the use of Lambda calculus from the abstract stage of B to the implementation. Unlike B0, RB0 will not disallow non-determinism, and can also specify what we call Prospective Value computations (which are described). The executable language implements all of these features. After introducing some preliminary concepts, we review the work leading to the rise of Reversible Computing as a possible answer to the growing problem of energy dissipation in modern processors. We describe the language RB0, and demonstrate the use of its features, introducing the companion language RB1 and its role in the process. We then introduce our execution platform, the Reversible Virtual Machine (RVM), and translate some of the examples developed earlier into RVM code. For the concrete functions, we provide a proposed syntax and translation schema to enable consistent translation to RVM, and introduce a postfix Lambda notation to link the RB0 specification to the RVM’s own postfix notation. We provide comprehensive translation schemas for those parts of RB0 which would be found in B operations; these will form the basis of an automated translation engine. In addition, we look at a denotational semantics for Bunch theory, which has proved useful in formalising the underlying concepts.
Subjects/Keywords: 004; reversible computation; formal specification; translation
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APA (6th Edition):
Lynas, A. R. (2011). Expressive reversible language : aspects of semantics and implementation. (Doctoral Dissertation). Teesside University. Retrieved from https://research.tees.ac.uk/en/studentTheses/dd3e1faf-3c53-4dc4-ba1c-73e412c865a3 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533580
Chicago Manual of Style (16th Edition):
Lynas, Angel Robert. “Expressive reversible language : aspects of semantics and implementation.” 2011. Doctoral Dissertation, Teesside University. Accessed January 17, 2021.
https://research.tees.ac.uk/en/studentTheses/dd3e1faf-3c53-4dc4-ba1c-73e412c865a3 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533580.
MLA Handbook (7th Edition):
Lynas, Angel Robert. “Expressive reversible language : aspects of semantics and implementation.” 2011. Web. 17 Jan 2021.
Vancouver:
Lynas AR. Expressive reversible language : aspects of semantics and implementation. [Internet] [Doctoral dissertation]. Teesside University; 2011. [cited 2021 Jan 17].
Available from: https://research.tees.ac.uk/en/studentTheses/dd3e1faf-3c53-4dc4-ba1c-73e412c865a3 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533580.
Council of Science Editors:
Lynas AR. Expressive reversible language : aspects of semantics and implementation. [Doctoral Dissertation]. Teesside University; 2011. Available from: https://research.tees.ac.uk/en/studentTheses/dd3e1faf-3c53-4dc4-ba1c-73e412c865a3 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533580
10.
Chibosha, Stephen Kawimbe.
Factors associated with the uptake of long-acting reversible contraceptives among adolescents accessing family planning services in Lusaka, Zambia.
Degree: 2020, University of Zimbabwe
URL: http://dspace.unza.zm/handle/123456789/6523
► Long-acting reversible contraceptives (LARC) provide effective contraception for an extended period, are user independent, safe and therefore important in preventing teenage pregnancy. However, the uptake…
(more)
▼ Long-acting reversible contraceptives (LARC) provide effective contraception for an extended period, are user independent, safe and therefore important in preventing teenage pregnancy. However, the uptake of this contraceptive method remains relatively low among adolescents. Family planning clinics provide an opportunity to counsel and provide LARC to adolescents. This study was therefore conducted to explore the factors that influence the uptake of LARC among adolescents accessing family planning services at selected health facilities in Lusaka, Zambia.
An unmatched case control study was conducted at selected facilities in Lusaka between May and November, 2018 and convenient sampling was used. Exit interviews using a structured questionnaire were conducted on 75 adolescents who had chosen LARC (as cases) and 75 adolescents who had chosen others contraception methods (as controls).
The mean age of participants was 17.73 years (SD ± 1.83). A total number of 89(59%) had previously used contraceptives and the most commonly used contraceptives were male condoms at 78%. Out of these, only 12(13%) had previously used LARC. It was found that those participants who had used injectable contraceptives previously were about 93% less likely to accept LARC methods (AOR 0.72; 95% CI 0.006-0.870). It was also found that those who had knowledge about LARC methods were more than 90% less likely to choose the LARC method (AOR 0.077; 95% CI 0.008-0.697). Other predictors of LARC method use were myths like LARC methods being painful. When backward logistic regression model was performed, it was found that those participants who felt that LARC methods dislodged in the body were more than 80% less likely to accept LARC methods (AOR 0.183; 0.040-0.839). Socio-demographic factors were found not to be significantly with LARC uptake.
Knowledge on LARC methods and sexual activity positively affect the utilisation of LARC among adolescents. Previous use of Injectable contraception and myths and misconception surrounding LARC methods negatively impact on LARC utilisation. Socio-demographic characteristics and provider-based factors have no significant association with LARC uptake among adolescents.
Key words: adolescents, Long-acting reversible contraceptive, family planning.
Subjects/Keywords: Long-acting reversible contraceptive; Contraceptives – Family planning
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APA (6th Edition):
Chibosha, S. K. (2020). Factors associated with the uptake of long-acting reversible contraceptives among adolescents accessing family planning services in Lusaka, Zambia. (Thesis). University of Zimbabwe. Retrieved from http://dspace.unza.zm/handle/123456789/6523
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):
Chibosha, Stephen Kawimbe. “Factors associated with the uptake of long-acting reversible contraceptives among adolescents accessing family planning services in Lusaka, Zambia.” 2020. Thesis, University of Zimbabwe. Accessed January 17, 2021.
http://dspace.unza.zm/handle/123456789/6523.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chibosha, Stephen Kawimbe. “Factors associated with the uptake of long-acting reversible contraceptives among adolescents accessing family planning services in Lusaka, Zambia.” 2020. Web. 17 Jan 2021.
Vancouver:
Chibosha SK. Factors associated with the uptake of long-acting reversible contraceptives among adolescents accessing family planning services in Lusaka, Zambia. [Internet] [Thesis]. University of Zimbabwe; 2020. [cited 2021 Jan 17].
Available from: http://dspace.unza.zm/handle/123456789/6523.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chibosha SK. Factors associated with the uptake of long-acting reversible contraceptives among adolescents accessing family planning services in Lusaka, Zambia. [Thesis]. University of Zimbabwe; 2020. Available from: http://dspace.unza.zm/handle/123456789/6523
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
11.
Stampfli, Patrick Ryan.
Tunable Reversible Dry Adhesion of Elastomeric Post Enabled by Stiffness Tuning of Microfluidic LMPA Thin Film.
Degree: 2017, University of Nevada – Reno
URL: http://hdl.handle.net/11714/2567
► The goal of this study is to investigate the effects and underlying mechanisms of stiffness tuning on tunable reversible dry adhesion of an elastomeric post.…
(more)
▼ The goal of this study is to investigate the effects and underlying mechanisms of stiffness tuning on tunable
reversible dry adhesion of an elastomeric post. This research introduces a novel device constructed out of a soft elastomer, polydemethylsiloxane (PDMS), with micro channels injected with low melting point alloy (LMPA) that can soften by applying a voltage. In contrast to traditional handling devices, such as metallic robot handlers, this soft gripper enables compliant manipulation of delicate fragile objects such as a thin glass slide. In this thesis, the design and fabrication of the elastomeric posts and the effects of three adhesion testing conditions will be presented. The first testing condition provided the baseline adhesion values that would be later referenced to certify adhesion reversibility. The second condition demonstrates the device’s ability to change adhesion forces on the spot, or dynamically. The third condition displays the ability of the device to maintain this adhesion change when activated and deactivated repeatedly. Theoretical Finite Element modeling provides insights indicating a maximum adhesion when varying one critical geometrical parameter, which was later confirmed with experiments. Experimental results prove the device’s capability of dynamically tunable
reversible dry adhesion. This novel approach to tunable dry adhesion exhibits the feasibility of soft grippers that would not require complicated systems for activation but instead only need low power and simple circuitry, and thus have potential to function as effective soft gripping devices.
Advisors/Committee Members: Shan, Wanliang (advisor), Aureli, Matteo (committee member), LaCombe, Jeffrey (committee member).
Subjects/Keywords: Adhesion; Dry; LMPA; PDMS; Reversible; Tunable
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APA (6th Edition):
Stampfli, P. R. (2017). Tunable Reversible Dry Adhesion of Elastomeric Post Enabled by Stiffness Tuning of Microfluidic LMPA Thin Film. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/2567
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):
Stampfli, Patrick Ryan. “Tunable Reversible Dry Adhesion of Elastomeric Post Enabled by Stiffness Tuning of Microfluidic LMPA Thin Film.” 2017. Thesis, University of Nevada – Reno. Accessed January 17, 2021.
http://hdl.handle.net/11714/2567.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Stampfli, Patrick Ryan. “Tunable Reversible Dry Adhesion of Elastomeric Post Enabled by Stiffness Tuning of Microfluidic LMPA Thin Film.” 2017. Web. 17 Jan 2021.
Vancouver:
Stampfli PR. Tunable Reversible Dry Adhesion of Elastomeric Post Enabled by Stiffness Tuning of Microfluidic LMPA Thin Film. [Internet] [Thesis]. University of Nevada – Reno; 2017. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/11714/2567.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Stampfli PR. Tunable Reversible Dry Adhesion of Elastomeric Post Enabled by Stiffness Tuning of Microfluidic LMPA Thin Film. [Thesis]. University of Nevada – Reno; 2017. Available from: http://hdl.handle.net/11714/2567
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Southern California
12.
Rowley, Adrian Paul.
The elastic properties of the eyewall, the effect of focal
pressure on the retina, and the development of reversible
bioadhesives for utilization in a retinal prosthesis.
Degree: PhD, Cell and Neurobiology, 2011, University of Southern California
URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/651335/rec/6682
► Degenerative retinal diseases such as Retinitis Pigmentosa and Age-Related Macular Degeneration are leading causes of blindness. Retinal prostheses have been developed to bypass the degenerate…
(more)
▼ Degenerative retinal diseases such as Retinitis
Pigmentosa and Age-Related Macular Degeneration are leading causes
of blindness. Retinal prostheses have been developed to bypass the
degenerate photoreceptors and stimulate the viable bipolar and
retinal ganglion cells. These prostheses are designed to apply
electrical stimulation directly to the viable cells, creating an
artificial version of sight in implanted patients. Epiretinal
prostheses utilize a polymer electrode array, which is affixed to
the inner limiting membrane of the retina, using a retinal tack.
The electrode array and tack creates varying focal pressure across
the interface and subsequent retinal damage. In order to assist
bioengineers to make design changes that can minimize these
effects, firstly the elastic properties of the eyewall tissues must
be accurately established. These properties can be utilized in
computerized modeling (Finite Element Analysis) of the interface
and enable refinement of future array designs. Secondly, defining
safe limits of the amount of focal pressure that the retina can
withstand without significant pathological damage is equally
important. Thirdly, the integration of
reversible bioadhesives
could allow intraocular arrays to maintain intimate contact with
the retina and may eliminate the need for a retinal tack. ❧ I have
defined the elastic properties of the porcine and human posterior
ocular poles including the retina, choroid and sclera in both the
vertical and horizontal meridian. I describe the biological effect
of focal pressure on the retina and attempt to define safe limits
for future designs. I have also developed and tested
reversible
bioadhesives that could be integrated into the intraocular
electrode array, in order to eliminate the tack. We have implanted
these adhesive biomaterials onto the retina of both rabbits and
dogs. These bioadhesives may have multiple applications not only in
ophthalmology, but in a wide variety of surgical implants. The
potential benefits for the retinal prosthesis could include
removing the need for the tissue destructive tack, a reduction in
focal pressure effects, improved apposition of the intraocular
array to the retina, minimization of the current required to
stimulate neurons, extended battery life, diminished heat
production, and ultimately improved visual acuity.
Advisors/Committee Members: McNeill, Thomas H. (Committee Chair), Weiland, James D. (Committee Member), Humayun, Mark (Committee Member), Garner, Judy A. (Committee Member), Hinton, David R. (Committee Member).
Subjects/Keywords: retina; prosthesis; elastic; focal; pressure; reversible; bioadhesive
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APA ·
Chicago ·
MLA ·
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Export
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Manager
APA (6th Edition):
Rowley, A. P. (2011). The elastic properties of the eyewall, the effect of focal
pressure on the retina, and the development of reversible
bioadhesives for utilization in a retinal prosthesis. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/651335/rec/6682
Chicago Manual of Style (16th Edition):
Rowley, Adrian Paul. “The elastic properties of the eyewall, the effect of focal
pressure on the retina, and the development of reversible
bioadhesives for utilization in a retinal prosthesis.” 2011. Doctoral Dissertation, University of Southern California. Accessed January 17, 2021.
http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/651335/rec/6682.
MLA Handbook (7th Edition):
Rowley, Adrian Paul. “The elastic properties of the eyewall, the effect of focal
pressure on the retina, and the development of reversible
bioadhesives for utilization in a retinal prosthesis.” 2011. Web. 17 Jan 2021.
Vancouver:
Rowley AP. The elastic properties of the eyewall, the effect of focal
pressure on the retina, and the development of reversible
bioadhesives for utilization in a retinal prosthesis. [Internet] [Doctoral dissertation]. University of Southern California; 2011. [cited 2021 Jan 17].
Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/651335/rec/6682.
Council of Science Editors:
Rowley AP. The elastic properties of the eyewall, the effect of focal
pressure on the retina, and the development of reversible
bioadhesives for utilization in a retinal prosthesis. [Doctoral Dissertation]. University of Southern California; 2011. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/651335/rec/6682
Georgia Tech
13.
Hu, Lili.
Numerical algorithms based on the back and forth error compensation and correction.
Degree: PhD, Mathematics, 2014, Georgia Tech
URL: http://hdl.handle.net/1853/54839
► In this thesis we carry out a further study of the back and forth error compensation and correction (BFECC) method. The first part discusses the…
(more)
▼ In this thesis we carry out a further study of the back and forth error compensation and correction (BFECC) method. The first part discusses the time reversibility of numerical schemes. Motivated by the BFECC method, a variety of new numeri- cal schemes that aim at improving the time reversibility are developed and studied. We also introduce an interpolation algorithm based on BFECC in this part. In the second part we introduce a new limiting strategy which requires another backward advection in time so that overshoots/undershoots at the new time level get exposed when they are transformed back to compare with the solution at the old time level. This new technique is very simple to implement even for unstructured meshes and is able to eliminate artifacts induced by jump discontinuities in the solution itself or in its derivatives.
Advisors/Committee Members: Liu, Yingjie (advisor), Zhou, Haomin (committee member), Dieci, Luca (committee member), Rossignac, Jarek (committee member), Kang, Sung Ha (committee member).
Subjects/Keywords: BFECC; Limiting strategy; Time reversible algorithms
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APA ·
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Export
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APA (6th Edition):
Hu, L. (2014). Numerical algorithms based on the back and forth error compensation and correction. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/54839
Chicago Manual of Style (16th Edition):
Hu, Lili. “Numerical algorithms based on the back and forth error compensation and correction.” 2014. Doctoral Dissertation, Georgia Tech. Accessed January 17, 2021.
http://hdl.handle.net/1853/54839.
MLA Handbook (7th Edition):
Hu, Lili. “Numerical algorithms based on the back and forth error compensation and correction.” 2014. Web. 17 Jan 2021.
Vancouver:
Hu L. Numerical algorithms based on the back and forth error compensation and correction. [Internet] [Doctoral dissertation]. Georgia Tech; 2014. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1853/54839.
Council of Science Editors:
Hu L. Numerical algorithms based on the back and forth error compensation and correction. [Doctoral Dissertation]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/54839
14.
Berto, Pierre.
Synthèse et étude de réseaux élastomères réticulés réversiblement : Synthesis and study of recyclable elastomeric network.
Degree: Docteur es, Polymères, 2017, Bordeaux
URL: http://www.theses.fr/2017BORD0718
► Ce travail de thèse porte sur la synthèse et la caractérisation d’élastomères réticulés réversiblement à base de polyisoprène et polybutadiène en vue de leur possible…
(more)
▼ Ce travail de thèse porte sur la synthèse et la caractérisation d’élastomères réticulés réversiblement à base de polyisoprène et polybutadiène en vue de leur possible recyclage. Pour se faire, de longues chaines de polydiènes 1,4-cis ont été dégradées de manière contrôlée afin d’obtenir des polymères à faible viscosité. Dans un second temps, ces polydiènes ont ensuite été modifiés chimiquement soit le long ou soit aux extrémités des chaines afin d’obtenir des fonctions réactives de type alcool. Ces fonctions hydroxyles ont ensuite servi de point d’ancrage pour le greffage de fonctions furanes. L’addition d’un composé de type bis-maléimide au polymère liquide a alors conduit à la formation d’élastomère réticulé thermo-réversiblement grâce à la réaction de Diels-Alder entre les groupements furanes et maléimides. Les matériaux ainsi obtenus se comportement comme un élastomère réticulé stable dans une large gamme de température (- 80 °C à + 130 °C). Les propriétés mécaniques de ces élastomères (module de Young, contrainte/élongation à la rupture, module caoutchoutique) peuvent être facilement modulées en modifiant plusieurs paramètres comme la longueur des chaines, la densité de réticulation ou le lieu de réticulation (bout des chaines ou le long des chaines. La recyclabilité des matériaux a ensuite été montrée, aucune perte de propriétés n’a été observée même après 5 cycles de recyclage. Enfin, en changeant le type de liens réversibles par des groupements ureidopyrimidinones (UPy), nous avons observé que le matériel réticulé réversiblement par liaisons hydrogène obtenu possédait une organisation supramoléculaire particulière, induite par l’assemblage des groupements UPy.
This work focuses on the synthesis and characterization of reversibly crosslinked polyisoprene and polybutadiene and their potential recyclability. To this end, long chains of 1,4-cis polydienes have been degraded in a controlled manner in order to obtain telechelic polymers with low viscosity. In a second step, these low molar mass polydienes were chemically modified either along the backbone or at the chain-end of the polymer in order to obtain reactive functions. The thus obtained hydroxyl functions have been used as an anchor point for the grafting of furan functions. The addition of a bis-maleimide compound to the liquid polymer led to the formation of thermo-reversibly crosslinked elastomer thanks to the Diels-Alder reaction between the furan and the maleimide groups. The obtained materials have the behavior of a crosslinked elastomer, stable in a wide temperature range (-80 °C to + 130 °C). The mechanical properties of these elastomers (Young's modulus, strain / elongation at break, rubber modulus) can be easily modulated by modifying several parameters such as chain length, crosslinking density or crosslinking site along the chains. The recyclability of the materials was shown as no properties loss was observed even after 5 cycles of recycling. Finally, by changing the furan groups by ureidopyrimidinone groups (UPy), the reversibly…
Advisors/Committee Members: Peruch, Frédéric (thesis director), Grelier, Stéphane (thesis director).
Subjects/Keywords: Polybutadiène; Polyisoprène; Telechelic; Recyclable; Reversible; Diels-Alder; Polybutadiene; Polyisoprene; Telechelic; Recyclable; Reversible; Diels-Alder
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MLA ·
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to Zotero / EndNote / Reference
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APA (6th Edition):
Berto, P. (2017). Synthèse et étude de réseaux élastomères réticulés réversiblement : Synthesis and study of recyclable elastomeric network. (Doctoral Dissertation). Bordeaux. Retrieved from http://www.theses.fr/2017BORD0718
Chicago Manual of Style (16th Edition):
Berto, Pierre. “Synthèse et étude de réseaux élastomères réticulés réversiblement : Synthesis and study of recyclable elastomeric network.” 2017. Doctoral Dissertation, Bordeaux. Accessed January 17, 2021.
http://www.theses.fr/2017BORD0718.
MLA Handbook (7th Edition):
Berto, Pierre. “Synthèse et étude de réseaux élastomères réticulés réversiblement : Synthesis and study of recyclable elastomeric network.” 2017. Web. 17 Jan 2021.
Vancouver:
Berto P. Synthèse et étude de réseaux élastomères réticulés réversiblement : Synthesis and study of recyclable elastomeric network. [Internet] [Doctoral dissertation]. Bordeaux; 2017. [cited 2021 Jan 17].
Available from: http://www.theses.fr/2017BORD0718.
Council of Science Editors:
Berto P. Synthèse et étude de réseaux élastomères réticulés réversiblement : Synthesis and study of recyclable elastomeric network. [Doctoral Dissertation]. Bordeaux; 2017. Available from: http://www.theses.fr/2017BORD0718
University of Notre Dame
15.
Sarah Elizabeth Frost-Murphy.
Reversibility for Nanoscale Systems</h1>.
Degree: Computer Science and Engineering, 2009, University of Notre Dame
URL: https://curate.nd.edu/show/70795714k97
► There are a number of emerging nanoscale devices that promise to operate at amazing speeds with very low power and at very high densities.…
(more)
▼ There are a number of emerging nanoscale
devices that promise to operate at amazing speeds with very low
power and at very high densities. However, many of these promises
ignore critical factors in the design of a computer that would
render them little to no better than today’s transistors. This
dissertation explores reversibility as an avenue to allow the high
speed, high density, and low power potential of nanoscale devices
to be harnessed. This work begins by providing
the foundation for a theory of
reversible computation by presenting
a formal investigation of
reversible finite automata and
reversible
regular languages that surpasses previous discussions of
reversible
finite automata that were insufficient to allow fundamental and
important discussions to be held about the differences between
reversible finite automata and
reversible regular languages and
their traditional counterparts. The discussion is also extended to
reversible regular expressions. The work continues by discussing a
new symmetry discovered in
reversible gates that facilitates the
identification of complete,
reversible gate sets for emerging
nanodevices. Next, a simple
reversible architecture, Palindrome, is
presented that demonstrates the impact of reversibility on the
instruction set architecture, microarchitecture, and assembly level
programming. Finally, a path is shown for designing physically
reversible architectures using a particular nanoscale device,
quantum-dot cellular automata.
Advisors/Committee Members: Erik P. DeBenedictis, Committee Member, Peter Kogge, Committee Chair, Danny Z. Chen, Committee Member, Sharon X. Hu, Committee Member.
Subjects/Keywords: reversible finite automata; reversible gates; reversible quantum-dot cellular automata; reversible architecture; reversible computation
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APA (6th Edition):
Frost-Murphy, S. E. (2009). Reversibility for Nanoscale Systems</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/70795714k97
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):
Frost-Murphy, Sarah Elizabeth. “Reversibility for Nanoscale Systems</h1>.” 2009. Thesis, University of Notre Dame. Accessed January 17, 2021.
https://curate.nd.edu/show/70795714k97.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Frost-Murphy, Sarah Elizabeth. “Reversibility for Nanoscale Systems</h1>.” 2009. Web. 17 Jan 2021.
Vancouver:
Frost-Murphy SE. Reversibility for Nanoscale Systems</h1>. [Internet] [Thesis]. University of Notre Dame; 2009. [cited 2021 Jan 17].
Available from: https://curate.nd.edu/show/70795714k97.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Frost-Murphy SE. Reversibility for Nanoscale Systems</h1>. [Thesis]. University of Notre Dame; 2009. Available from: https://curate.nd.edu/show/70795714k97
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Lethbridge
16.
University of Lethbridge. Faculty of Arts and Science.
Fault tolerance in reversible logic
.
Degree: 2018, University of Lethbridge
URL: http://hdl.handle.net/10133/5193
► In recent years reversible logic has offered a promising alternative to traditional logic circuits. Reversible logic introduces a mechanism which allows theoretically zero energy dissipation…
(more)
▼ In recent years reversible logic has offered a promising alternative to traditional logic circuits. Reversible logic introduces a mechanism which allows theoretically zero energy
dissipation by eliminating the possibility of information loss. However, it is also desirable
that all computation should ideally be done in a fault tolerant manner. To address this we
propose techniques to achieve fault tolerance in reversible logic based on a passive hardware redundancy technique. We propose two new designs for a reversible majority voter circuit that can be used to implement fault masking. Comparisons to existing designs are presented in terms of cost metrics such as gate count, garbage outputs, constant inputs, and quantum cost. Comparative failure probability analysis of the proposed voter circuits is also provided. Simulation results of the voter circuit failure probabilities over different numbers of trials are also presented. Our approach can be used to determine the circuit failure probability by using the gate failure probabilities. The proposed methodology can provide useful information for future reversible gate fabrication and designing future fault tolerant reversible circuits.
Subjects/Keywords: Reversible computing;
Integrated circuits – Fault tolerance;
Logic circuits;
majority voter circuit;
passive hardware redundancy;
reversible fault tolerant circuits;
reversible logic;
triple modular redundancy;
zero energy dissipation;
Dissertations, Academic
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APA (6th Edition):
Science, U. o. L. F. o. A. a. (2018). Fault tolerance in reversible logic
. (Thesis). University of Lethbridge. Retrieved from http://hdl.handle.net/10133/5193
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):
Science, University of Lethbridge. Faculty of Arts and. “Fault tolerance in reversible logic
.” 2018. Thesis, University of Lethbridge. Accessed January 17, 2021.
http://hdl.handle.net/10133/5193.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Science, University of Lethbridge. Faculty of Arts and. “Fault tolerance in reversible logic
.” 2018. Web. 17 Jan 2021.
Vancouver:
Science UoLFoAa. Fault tolerance in reversible logic
. [Internet] [Thesis]. University of Lethbridge; 2018. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10133/5193.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Science UoLFoAa. Fault tolerance in reversible logic
. [Thesis]. University of Lethbridge; 2018. Available from: http://hdl.handle.net/10133/5193
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universidade Presbiteriana Mackenzie
17.
Guilherme Kronemberger.
Em busca de um algoritmo construtivo para autômatos celulares reversíveis: a abordagem das regras primitivas e derivadas.
Degree: 2008, Universidade Presbiteriana Mackenzie
URL: http://tede.mackenzie.com.br//tde_busca/arquivo.php?codArquivo=755
► Autômatos celulares têm sido estudados como modelos computacionais em diversas áreas, sendo que muitas são as suas propriedades, entre elas a reversibilidade. Autômatos celulares reversíveis…
(more)
▼ Autômatos celulares têm sido estudados como modelos computacionais em diversas áreas, sendo que muitas são as suas propriedades, entre elas a reversibilidade. Autômatos celulares reversíveis podem ser usados, entre outras aplicações, para compactação ou encriptação de dados. Aparentemente, as regras reversíveis apresentadas na literatura parecem ter sido derivadas apenas através de buscas exaustivas em seus espaços correspondentes. No entanto, seria importante a existência de um algoritmo que permitisse construí-las fácil e diretamente, diferente do que acontece na literatura. Este é o objetivo deste trabalho. Neste sentido, buscou-se um algoritmo que permitesse identificar regras de autômatos celulares unidimensionais reversíveis. Para tanto, foram obtidas em análises exaustivas e na literatura todas as regras reversíveis de 2 estados e vizinhanças de 2, 3, 4 e 5 células, e de 3 estados e vizinhanças de 2 e 3 células. Com o estudo destas regras constatou-se em cada espaço que: todas as regras reversíveis são balanceadas; elas se distribuem simetricamente; um subconjunto delas aqui denominadas regras reversíveis primitivas, RPs possui lei de formação simples, definida por blocos homogêneos de estados; e, se uma regra é reversível, todas as suas equivalentes dinâmicas também o são. Na tentativa de se obter o algoritmo desejado explorou-se uma abordagem em que as regras reversíveis não primitivas (denominadas regras derivadas, RDs), seriam obtidas a partir das primitivas. Nesse sentido foram testados dois esquemas de construção das RDs, um baseado na utilização conjunta de todas as RPs, e outro, utilizando-as individualmente; entretanto, ambos não levaram a resultado positivo. Adicionalmente, estudou-se a relação entre as propriedades de reversibilidade e conservatividade de regras nos espaços considerados.
Cellular automata have been studied as computer models in many different areas. They have many properties, one of them being reversibility. Reversible cellular automata can be used, among other applications, for data compressing and encryption. Apparently, the reversible rules featured in the literature seem to have been derived through exhaustive searches in their corresponding spaces. However, it would be important the availability of an algorithm that would allow their direct and easy construction, different from what occurs in literature. This is the aim of this work. Along this line, we tried to come up with an algorithm to allow the identification of one-dimensional, reversible cellular automaton rules. This was based on reversible rules with 2 states and 2, 3, 4 and 5 cells per neighborhood, and on those with 3 states and 2 and 3 cells per neighborhood, all of them drawn out of exhaustive analysis and from the literature. By studying these rules it was possible to verify in each space that: all reversible rules are balanced; they are symmetrically distributed; a subset of them herein denoted primitive reversible rules, RPs have a simple formation law, defined by homogeneous blocks of states; and, if a rule…
Advisors/Committee Members: Pedro Paulo Balbi de Oliveira, Luiz Henrique Alves Monteiro, André Carlos Ponce de Leon Ferreira de Carvalho.
Subjects/Keywords: reversible cellular automata; NKS; cellular automata; computação reversível; NKS; ENGENHARIA ELETRICA; autômato celular reversível; autômato celular; reversible computation
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Kronemberger, G. (2008). Em busca de um algoritmo construtivo para autômatos celulares reversíveis: a abordagem das regras primitivas e derivadas. (Thesis). Universidade Presbiteriana Mackenzie. Retrieved from http://tede.mackenzie.com.br//tde_busca/arquivo.php?codArquivo=755
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):
Kronemberger, Guilherme. “Em busca de um algoritmo construtivo para autômatos celulares reversíveis: a abordagem das regras primitivas e derivadas.” 2008. Thesis, Universidade Presbiteriana Mackenzie. Accessed January 17, 2021.
http://tede.mackenzie.com.br//tde_busca/arquivo.php?codArquivo=755.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kronemberger, Guilherme. “Em busca de um algoritmo construtivo para autômatos celulares reversíveis: a abordagem das regras primitivas e derivadas.” 2008. Web. 17 Jan 2021.
Vancouver:
Kronemberger G. Em busca de um algoritmo construtivo para autômatos celulares reversíveis: a abordagem das regras primitivas e derivadas. [Internet] [Thesis]. Universidade Presbiteriana Mackenzie; 2008. [cited 2021 Jan 17].
Available from: http://tede.mackenzie.com.br//tde_busca/arquivo.php?codArquivo=755.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kronemberger G. Em busca de um algoritmo construtivo para autômatos celulares reversíveis: a abordagem das regras primitivas e derivadas. [Thesis]. Universidade Presbiteriana Mackenzie; 2008. Available from: http://tede.mackenzie.com.br//tde_busca/arquivo.php?codArquivo=755
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Edinburgh
18.
Smith, Darren Andrew.
Investigating the structure and dynamics of DNA with fluorescence and computational techniques.
Degree: PhD, 2015, University of Edinburgh
URL: http://hdl.handle.net/1842/10444
► Nucleic acids, such as DNA, play an essential role in all known forms of life; however, despite their fundamental importance, there is still a significant…
(more)
▼ Nucleic acids, such as DNA, play an essential role in all known forms of life; however, despite their fundamental importance, there is still a significant lack of understanding surrounding their functional behaviour. This thesis explores the structure and dynamics of DNA by employing methods based on fluorescence and through the use of computational calculations. Time-resolved fluorescence experiments have been performed on dinucleotides containing 2-aminopurine (2AP) in various alcohol-water mixtures. 2AP, a fluorescent analogue of the nucleobase adenine, has been used extensively to investigate nucleic acids because of its ability to be incorporated into their structures with minimal perturbation and its high sensitivity to its local environment. Direct solvent effects on 2AP were established through measurements on the free fluorophore. Analysis of the complex fluorescence decays associated with the dinucleotides was challenging but has provided insight into their conformational dynamics. Solvent polarity was found to play a significant role in determining both photophysical and conformational properties in these systems. The complicated fluorescence decay of 2AP in nucleic acids highlights the need for accurate and unbiased analysis methods. Various time-resolved fluorescence analysis methods, including iterative reconvolution and the exponential series method, have been investigated with real and simulated data to obtain an overview of their benefits and limitations. The main outcome of the evaluation is that no single method is preferred in all situations and there is likely to be value in using a combination when there is ambiguity in the interpretation of the results. Regardless of the analysis technique used, the parameterised description of the observed fluorescence decay is meaningless if the underlying physical model is unrealistic. The advance of computational methods has provided a new means to rigorously test the viability of proposed models. Calculations have been performed at the M06-2X/6-31+G(d) level of theory to investigate the stability of 2AP-containing dinucleotides in conformations similar to those observed in the double-helical structure of DNA. The results help to explain the similarity of the time-resolved fluorescence behaviour of 2AP in dinucleotide and DNA systems but also bring to light subtle differences that could perhaps account for experimental discrepancies. The recent emergence of advanced optical microscopy techniques has offered the prospect of being able to directly visualise nucleic acid structure at the nanoscale but, unfortunately, limitations of existing labelling methods have hindered delivery of this potential. To address this issue, a novel strategy has been used to introduce reversible fluorescence photoswitching into DNA at high label density. Photophysical studies have implicated aggregation and energy-transfer as possible quenching mechanisms in this system, which could be detrimental to its future application. The reliability of fluorescence photoswitching was…
Subjects/Keywords: 572; DNA; dinucleotides; fluorescence; Time-Correlated Single Photon Counting; TCSPC; DFT; M06-2X; 2-aminopurine; reversible fluorescence photoswitching; reversible photoswitching
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APA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Smith, D. A. (2015). Investigating the structure and dynamics of DNA with fluorescence and computational techniques. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/10444
Chicago Manual of Style (16th Edition):
Smith, Darren Andrew. “Investigating the structure and dynamics of DNA with fluorescence and computational techniques.” 2015. Doctoral Dissertation, University of Edinburgh. Accessed January 17, 2021.
http://hdl.handle.net/1842/10444.
MLA Handbook (7th Edition):
Smith, Darren Andrew. “Investigating the structure and dynamics of DNA with fluorescence and computational techniques.” 2015. Web. 17 Jan 2021.
Vancouver:
Smith DA. Investigating the structure and dynamics of DNA with fluorescence and computational techniques. [Internet] [Doctoral dissertation]. University of Edinburgh; 2015. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1842/10444.
Council of Science Editors:
Smith DA. Investigating the structure and dynamics of DNA with fluorescence and computational techniques. [Doctoral Dissertation]. University of Edinburgh; 2015. Available from: http://hdl.handle.net/1842/10444
NSYSU
19.
Chuang, Yiau-Cheng.
A Location-Map Free Reversible Watermarking with High Data Capacity.
Degree: Master, Computer Science and Engineering, 2012, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726112-110403
► Reversible watermarking techniques extract the watermark and recover the original image losslessly from the watermarked image. They have been applied to those sensitive fields, such…
(more)
▼ Reversible watermarking techniques extract the watermark and recover the original image losslessly from the watermarked image. They have been applied to those sensitive fields, such as the medicine and the military. Since an embedding pixel value may exceed the limitation of pixel value during the embedding process, most of the
reversible watermarking methods require a location-map to record those pixels for recovering cover images. Although the location-map can be compressed by a lossless compression algorithm, and then embed into the watermarked image, this lowers embedding capacity and increases the complexity of watermarking during the procedures of embedding and extraction.
In this thesis, we propose a
reversible location-map free of watermarking algorithm. This algorithm first exploits the sorting and the correlation of neighboring pixels to increase the embedding capacity. Next we find thresholds from the predicted values. If the predicted value of an embedding pixel is within the thresholds, we can ensure that the pixel has no underflow or overflow problem during embedding process. Therefore, we can recover the cover image without any distortion.
The experimental results reveal that the performance of our proposed method outperforms that proposed by FUJIYOSHI et al. For example, the embedding capacity obtained by the proposed method is higher than that obtained by FUJIYOSHI et al. about 60%, and the PSNR of our scheme is higher than FUJIYOSHI et al. about 5 dB.
Advisors/Committee Members: Wei-Kuang Lai (chair), Ming-Chao Chiang (chair), Lung-Jen Wang (chair), Wen-Shyong Hsieh (committee member), Chung-nan Lee (chair).
Subjects/Keywords: reversible watermarking; watermarking; histogram shifting; prediction-error; location-map free
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APA ·
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CSE |
Export
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APA (6th Edition):
Chuang, Y. (2012). A Location-Map Free Reversible Watermarking with High Data Capacity. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726112-110403
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):
Chuang, Yiau-Cheng. “A Location-Map Free Reversible Watermarking with High Data Capacity.” 2012. Thesis, NSYSU. Accessed January 17, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726112-110403.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chuang, Yiau-Cheng. “A Location-Map Free Reversible Watermarking with High Data Capacity.” 2012. Web. 17 Jan 2021.
Vancouver:
Chuang Y. A Location-Map Free Reversible Watermarking with High Data Capacity. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Jan 17].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726112-110403.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chuang Y. A Location-Map Free Reversible Watermarking with High Data Capacity. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726112-110403
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
20.
Packham, Analisa Marie.
Three Essays on the Effects of Health and Education Policies on Teen Childbearing.
Degree: PhD, Economics, 2016, Texas A&M University
URL: http://hdl.handle.net/1969.1/174237
► Despite a near-continuous decline over the past 20 years, the United States has maintained one of the highest teen birth rates in the developed world.…
(more)
▼ Despite a near-continuous decline over the past 20 years, the United States has maintained one of the highest teen birth rates in the developed world. Two main arguments support the notion that teenage pregnancy can be seen as a public health concern. First, both unintended pregnancy and teen motherhood are associated with adverse maternal and child health outcomes such as delayed prenatal care, premature birth and negative physical and mental health effects for children. Second, because 4 out of 5 teen pregnancies are unintended, teen mothers may be ill-equipped to raise children, and they may impose external costs on friends, family, and community members.
Historically, legislation aimed at decreasing teen pregnancy rates attempts to reduce or delay the initiation and frequency of sex and/or prevent risky sexual behavior. These types of policies include sex education mandates, legal access to contraception, and public funding for women’s health clinics. In this dissertation, I use quasi-experimental methods to determine the effects of such health and education policies on teen pregnancy. My combined findings from my three working papers indicate that although abstinence-based sex education requirements do not affect teen birth rates or teen abortion rates, there may be some scope for Title X clinics to effectively lower teen pregnancy rates through increased access to contraception. Providing free long-acting
reversible contraceptives to low-income women via publicly funded clinics reduces the teen birth rate by 5%-7%, while dramatically reducing family planning funding increases teen birth rates by approximately 5%.
Advisors/Committee Members: Lindo, Jason M (advisor), Hoekstra, Mark (committee member), Meer, Jonathan (committee member), DeSalvo, Bethany (committee member).
Subjects/Keywords: teen childbearing; sex education; long-acting reversible contraceptives; family planning
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APA ·
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MLA ·
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CSE |
Export
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APA (6th Edition):
Packham, A. M. (2016). Three Essays on the Effects of Health and Education Policies on Teen Childbearing. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/174237
Chicago Manual of Style (16th Edition):
Packham, Analisa Marie. “Three Essays on the Effects of Health and Education Policies on Teen Childbearing.” 2016. Doctoral Dissertation, Texas A&M University. Accessed January 17, 2021.
http://hdl.handle.net/1969.1/174237.
MLA Handbook (7th Edition):
Packham, Analisa Marie. “Three Essays on the Effects of Health and Education Policies on Teen Childbearing.” 2016. Web. 17 Jan 2021.
Vancouver:
Packham AM. Three Essays on the Effects of Health and Education Policies on Teen Childbearing. [Internet] [Doctoral dissertation]. Texas A&M University; 2016. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1969.1/174237.
Council of Science Editors:
Packham AM. Three Essays on the Effects of Health and Education Policies on Teen Childbearing. [Doctoral Dissertation]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/174237
Texas A&M University
21.
Dadi, Sireesh.
Estimation of Impedance Using Seismic Reflection Data Based on Transdimensional Inversion.
Degree: PhD, Geophysics, 2014, Texas A&M University
URL: http://hdl.handle.net/1969.1/152595
► Deterministic seismic inversion can obtain optimal results when there is a linear relationship between data and model parameters during local optimization (single optimum solution). For…
(more)
▼ Deterministic seismic inversion can obtain optimal results when there is a linear
relationship between data and model parameters during local optimization (single
optimum solution). For nonlinear geophysical problems and in the presence of multiple
local minima for a cost function, global optimization techniques are necessary to
characterize the global minimum solution. Stochastic, model-based seismic inversion is
a widely used global optimization technique and Markov Chain Monte Carlo (MCMC)
method is a natural choice to sample model parameters during the random walk. In
this dissertation, I apply a sampling technique called
reversible jump Markov Chain
Monte Carlo (rjMCMC) to traverse the model space. A key property of this approach
is that it automatically changes the layer thicknesses and number of layers, thereby
predicting the optimum number of model parameters during inversion. The method
applies Bayesian inversion, with rjMCMC sampling, so that it also quantifies the
uncertainty in model parameters based on an ensemble of models. I apply Bayesian
inversion with rjMCMC sampling for two applications. In the first application, I
define upscaling velocity logs as an inversion problem to obtain optimal models and
quantify uncertainty of upscaled models at the well location. The upscaled velocity at
the well locations can be subsequently used to stabilize velocity inversion during Full
waveform Inversion (FWI) for seismic imaging purposes. In the second application, I
perform post-stack seismic inversion to obtain shallow impedance structure of the
TAMU and Ori volcanoes at the Shatsky Rise oceanic plateau. Since impedance is a
rock property, it is used to discriminate basalt rock types, which gives insight into
the late-stage evolution of both the volcanoes.
Advisors/Committee Members: Gibson, Richard (advisor), Sun, Yuefeng (committee member), King, Michael (committee member), Duan, Benchun (committee member).
Subjects/Keywords: Reversible jump MCMC; Bayesian inversion; well log upscaling; Shatsky Rise
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APA ·
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APA (6th Edition):
Dadi, S. (2014). Estimation of Impedance Using Seismic Reflection Data Based on Transdimensional Inversion. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/152595
Chicago Manual of Style (16th Edition):
Dadi, Sireesh. “Estimation of Impedance Using Seismic Reflection Data Based on Transdimensional Inversion.” 2014. Doctoral Dissertation, Texas A&M University. Accessed January 17, 2021.
http://hdl.handle.net/1969.1/152595.
MLA Handbook (7th Edition):
Dadi, Sireesh. “Estimation of Impedance Using Seismic Reflection Data Based on Transdimensional Inversion.” 2014. Web. 17 Jan 2021.
Vancouver:
Dadi S. Estimation of Impedance Using Seismic Reflection Data Based on Transdimensional Inversion. [Internet] [Doctoral dissertation]. Texas A&M University; 2014. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1969.1/152595.
Council of Science Editors:
Dadi S. Estimation of Impedance Using Seismic Reflection Data Based on Transdimensional Inversion. [Doctoral Dissertation]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/152595
University of Newcastle
22.
Coombe, Jacqueline Natalie.
Just one method among others: examining long-acting reversible contraception (non-)use.
Degree: PhD, 2018, University of Newcastle
URL: http://hdl.handle.net/1959.13/1388228
► Research Doctorate - Doctor of Philosophy (PhD)
Over the past few years, interest in long-acting reversible contraception (LARC; including intrauterine devices, contraceptive implants and contraceptive…
(more)
▼ Research Doctorate - Doctor of Philosophy (PhD)
Over the past few years, interest in long-acting reversible contraception (LARC; including intrauterine devices, contraceptive implants and contraceptive injections) as a way to reduce rates of unintended pregnancy has grown. Despite increasing advocacy for these highly effective and long-lasting methods, rates of use in Australia, particularly among young women, remains low. While the body of literature in this area is developing, the reasons why young women choose to use less effective, short term methods rather than LARC remains unclear. Using data from the Contraceptive Use, Pregnancy Intention and Decisions (CUPID) Study, this thesis develops an understanding of LARC (non-)use among a cohort of young Australian women. This work employs a mixed-method approach, and is comprised of four components, spanning a systematic review, quantitative analysis, and two qualitative analyses (the first utilises free-text comments, the second semi-structured interviews). Key findings include the importance of pregnancy (actual, or future intentions); results from the quantitative analysis demonstrated that women with a history of pregnancy were more likely to use LARC, while results from the semi-structured interviews showed that women with unclear or ambivalent attitudes towards pregnancy were reluctant to use these methods. Furthermore, non-contraceptive effects (for example, menstrual cycle control) were found to play a significant role in contraceptive decision making. Findings from the systematic review suggest that the contraceptive benefits of LARC are generally perceived positively by women. However, findings from both sets of qualitative data reveal that women make decisions based on more than contraceptive effectiveness, prioritising certain characteristics over others. The qualitative analysis of free-text comments also showed that contraceptive needs can change over relatively short periods of time, thus making the ‘temporarily permanent’ nature of LARC unappealing to some. On the other hand, findings from the semi-structured interviews demonstrated that women who desire LARC still face difficulties to use, including a general lack of awareness regarding these methods, as well as misperceptions held by their health care providers. In summary, findings from this thesis demonstrate the existence of some very real challenges to LARC use for those who would benefit or desire them. However, these methods are not the only options available to women, who will continue to choose whichever method best suits their needs, often irrespective of effectiveness.
Advisors/Committee Members: University of Newcastle. Faculty of Health & Medicine, School of Medicine and Public Health.
Subjects/Keywords: long-acting reversible contraception; women; qualitative; public health; thesis by publication
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APA ·
Chicago ·
MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Coombe, J. N. (2018). Just one method among others: examining long-acting reversible contraception (non-)use. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1388228
Chicago Manual of Style (16th Edition):
Coombe, Jacqueline Natalie. “Just one method among others: examining long-acting reversible contraception (non-)use.” 2018. Doctoral Dissertation, University of Newcastle. Accessed January 17, 2021.
http://hdl.handle.net/1959.13/1388228.
MLA Handbook (7th Edition):
Coombe, Jacqueline Natalie. “Just one method among others: examining long-acting reversible contraception (non-)use.” 2018. Web. 17 Jan 2021.
Vancouver:
Coombe JN. Just one method among others: examining long-acting reversible contraception (non-)use. [Internet] [Doctoral dissertation]. University of Newcastle; 2018. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/1959.13/1388228.
Council of Science Editors:
Coombe JN. Just one method among others: examining long-acting reversible contraception (non-)use. [Doctoral Dissertation]. University of Newcastle; 2018. Available from: http://hdl.handle.net/1959.13/1388228
Delft University of Technology
23.
Suresh Kumar, P.
Phosphate recovery from wastewater via reversible adsorption.
Degree: 2018, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:f75d3713-8ef2-4f92-884f-06664b040f47
;
urn:NBN:nl:ui:24-uuid:f75d3713-8ef2-4f92-884f-06664b040f47
;
f75d3713-8ef2-4f92-884f-06664b040f47
;
10.4233/uuid:f75d3713-8ef2-4f92-884f-06664b040f47
;
urn:isbn:978-94-6332-429-8
;
urn:NBN:nl:ui:24-uuid:f75d3713-8ef2-4f92-884f-06664b040f47
;
http://resolver.tudelft.nl/uuid:f75d3713-8ef2-4f92-884f-06664b040f47
► Eutrophication and the resulting formation of harmful algal blooms causes huge economic and environmental damages. Phosphorus (P) has been identified as a major limiting nutrient…
(more)
▼ Eutrophication and the resulting formation of harmful algal blooms causes huge economic and environmental damages. Phosphorus (P) has been identified as a major limiting nutrient for eutrophication. Phosphorous concentration greater than 100 µg P/L is usually considered high enough for causing eutrophication. The strictest regulations however aim to restrict the concentration below 10 µg P/L. Orthophosphate (or phosphate) is the bioavailable form of phosphorus. Adsorption is often suggested as technology to reduce phosphate to concentrations less than 100 and even 10 µg P/L with the advantages of a low-footprint, minimal waste generation and the option to recover the phosphate. In this thesis, the optimum properties of a phosphate adsorbent are identified and studied. Limitations of porous adsorbents having high surface areas are discussed and the optimum pore size distribution for phosphate adsorbents is determined. The role and mechanism of biogenic iron oxides in phosphate removal is discussed. Optimum methods for regenerating the adsorbent and improving the adsorbent reusability is studied. An economic assessment for phosphate adsorption is done, highlighting the main cost factors and identifying the research gaps needed to better understand these factors. A scenario analysis comparing the economics of low-cost one-time use adsorbents vs more expensive reusable adsorbents is made. A cost comparison of different technologies and the conditions where adsorption is favorable is highlighted. Suggestions for future studies are made based on the current findings.
Advisors/Committee Members: Witkamp, G.J., van Loosdrecht, Mark C.M., Delft University of Technology.
Subjects/Keywords: Phosphate recovery; Wastewater; reversible adsorption
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APA (6th Edition):
Suresh Kumar, P. (2018). Phosphate recovery from wastewater via reversible adsorption. (Doctoral Dissertation). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; urn:NBN:nl:ui:24-uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; f75d3713-8ef2-4f92-884f-06664b040f47 ; 10.4233/uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; urn:isbn:978-94-6332-429-8 ; urn:NBN:nl:ui:24-uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; http://resolver.tudelft.nl/uuid:f75d3713-8ef2-4f92-884f-06664b040f47
Chicago Manual of Style (16th Edition):
Suresh Kumar, P. “Phosphate recovery from wastewater via reversible adsorption.” 2018. Doctoral Dissertation, Delft University of Technology. Accessed January 17, 2021.
http://resolver.tudelft.nl/uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; urn:NBN:nl:ui:24-uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; f75d3713-8ef2-4f92-884f-06664b040f47 ; 10.4233/uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; urn:isbn:978-94-6332-429-8 ; urn:NBN:nl:ui:24-uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; http://resolver.tudelft.nl/uuid:f75d3713-8ef2-4f92-884f-06664b040f47.
MLA Handbook (7th Edition):
Suresh Kumar, P. “Phosphate recovery from wastewater via reversible adsorption.” 2018. Web. 17 Jan 2021.
Vancouver:
Suresh Kumar P. Phosphate recovery from wastewater via reversible adsorption. [Internet] [Doctoral dissertation]. Delft University of Technology; 2018. [cited 2021 Jan 17].
Available from: http://resolver.tudelft.nl/uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; urn:NBN:nl:ui:24-uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; f75d3713-8ef2-4f92-884f-06664b040f47 ; 10.4233/uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; urn:isbn:978-94-6332-429-8 ; urn:NBN:nl:ui:24-uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; http://resolver.tudelft.nl/uuid:f75d3713-8ef2-4f92-884f-06664b040f47.
Council of Science Editors:
Suresh Kumar P. Phosphate recovery from wastewater via reversible adsorption. [Doctoral Dissertation]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; urn:NBN:nl:ui:24-uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; f75d3713-8ef2-4f92-884f-06664b040f47 ; 10.4233/uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; urn:isbn:978-94-6332-429-8 ; urn:NBN:nl:ui:24-uuid:f75d3713-8ef2-4f92-884f-06664b040f47 ; http://resolver.tudelft.nl/uuid:f75d3713-8ef2-4f92-884f-06664b040f47
24.
Ortego Sampedro, Egoï.
Étude d’un système hydropneumatique de stockage d’énergie utilisant une pompe/turbine rotodynamique : Study of hydropneumatic energy storage device using a rotodynamique pump/turbine.
Degree: Docteur es, Génie énergétique, 2013, Paris, ENSAM
URL: http://www.theses.fr/2013ENAM0059
► Le développement croissant de systèmes de stockages connectés au réseau électrique se voit stimulé par les problématiques de gestion de réseau liés entre autres à…
(more)
▼ Le développement croissant de systèmes de stockages connectés au réseau électrique se voit stimulé par les problématiques de gestion de réseau liés entre autres à l'intégration croissante de technologies de production renouvelables. L'accumulation hydropneumatique d'énergie apparait comme une solution propre et économiquement intéressante dans le panel des technologies existantes. Cette étude analyse une configuration d'accumulation air-eau sans séparation, en cycle fermé et utilisant une pompe/turbine rotodynamique. Les principales problématiques en relation à ces choix techniques sont : les phénomènes de transfert de masse et de chaleur à l'interface air-eau, les caractéristiques de fonctionnement d'une machine hydraulique rotodynamique en régime d'opération variable et le rendement d'accumulation du système. Ces aspects sont traités ici par des approches locales dans certains cas, puis globales afin de pouvoir proposer un modèle de comportement dynamique du système de stockage pouvant faire l'objet de simulations rapides. Les aspects de modélisation ont été élaborés en parallèle au développement d'un banc d'essais de 45 kW réalisé dans le cadre de ce travail. Les observations expérimentales obtenues sur ce banc sont comparées aux résultats du modèle qui rend bien compte de la dynamique et de l'état énergétique du système. Des études d'amélioration du système sont engagées à la fin du document. Elles concernent d'une part la question de la flexibilité de fourniture de puissance et d'autre part le rendement d'accumulation du réservoir de stockage.
The present increasing development of storage systems connected to electrical network is stimulated by network management issues related to recent energetic landscape evolutions such as the increasing integration of renewable production sources. The hydro-pneumatic system seems to offer a clean and cheap energy storage solution among the set of existing storage technics. The present study analyses an air-water direct contact accumulation configuration, in closed cycle and using a rotodynamic pump/turbine. The main points of interest related to these technical choices are: the air-water interface mass and heat phenomena, variable operating point performances of a rotodynamic hydraulic machine and the overall efficiency of the storage device. These aspects are studied by, in some cases, a local approach, and then a global one in order to propose a dynamic behaviour model of the storage system suitable for rapid simulations. The modelling aspects were treated in parallel to the development of a 45 kW test rig built during this project. The experimental observations made on this test rig are compared to the modelling results that represent correctly the dynamics and energetic state of the system. At the end of this document, some studies for the improving of the power delivery flexibility and efficiency increasing of the accumulation element are engaged.
Advisors/Committee Members: Coutier-Delgosha, Olivier (thesis director).
Subjects/Keywords: Stockage; Energie; Hydropneumatique; Pompe reversible; Storage; Energy; Hydropneumatic; Reservible pump
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Chicago ·
MLA ·
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APA (6th Edition):
Ortego Sampedro, E. (2013). Étude d’un système hydropneumatique de stockage d’énergie utilisant une pompe/turbine rotodynamique : Study of hydropneumatic energy storage device using a rotodynamique pump/turbine. (Doctoral Dissertation). Paris, ENSAM. Retrieved from http://www.theses.fr/2013ENAM0059
Chicago Manual of Style (16th Edition):
Ortego Sampedro, Egoï. “Étude d’un système hydropneumatique de stockage d’énergie utilisant une pompe/turbine rotodynamique : Study of hydropneumatic energy storage device using a rotodynamique pump/turbine.” 2013. Doctoral Dissertation, Paris, ENSAM. Accessed January 17, 2021.
http://www.theses.fr/2013ENAM0059.
MLA Handbook (7th Edition):
Ortego Sampedro, Egoï. “Étude d’un système hydropneumatique de stockage d’énergie utilisant une pompe/turbine rotodynamique : Study of hydropneumatic energy storage device using a rotodynamique pump/turbine.” 2013. Web. 17 Jan 2021.
Vancouver:
Ortego Sampedro E. Étude d’un système hydropneumatique de stockage d’énergie utilisant une pompe/turbine rotodynamique : Study of hydropneumatic energy storage device using a rotodynamique pump/turbine. [Internet] [Doctoral dissertation]. Paris, ENSAM; 2013. [cited 2021 Jan 17].
Available from: http://www.theses.fr/2013ENAM0059.
Council of Science Editors:
Ortego Sampedro E. Étude d’un système hydropneumatique de stockage d’énergie utilisant une pompe/turbine rotodynamique : Study of hydropneumatic energy storage device using a rotodynamique pump/turbine. [Doctoral Dissertation]. Paris, ENSAM; 2013. Available from: http://www.theses.fr/2013ENAM0059
University of California – Irvine
25.
McVay, Derek Joseph.
Evaluation of Dynamic Reversible Chemical Energy Storage with High Temperature Electrolysis.
Degree: Mechanical and Aerospace Engineering, 2017, University of California – Irvine
URL: http://www.escholarship.org/uc/item/02f1f4fn
► Renewable power generation is intermittent and non-dispatchable, but is steadily increasing in penetration due to lower costs associated with installation and demand for clean power…
(more)
▼ Renewable power generation is intermittent and non-dispatchable, but is steadily increasing in penetration due to lower costs associated with installation and demand for clean power generation. Without significant energy storage available to a grid with high renewable penetration, a mismatch between the load and the power available can. Furthermore, advanced high temperature nuclear reactors offer clean power generation, but only at a baseload operation scenario due to the significant thermal inertia associated with the reactor. Also, natural gas is expected to continue to play a major role during and after the transition from modest renewable use to a majority of renewable penetration, but will need to have a reduced carbon footprint. In this study, the storage of otherwise curtailed renewable power through hydrogen via high temperature electrolysis and the dispatch of shifted renewable power through hydrogen via reversible high temperature fuel cells is studied on a system level utilizing spatially resolved dynamic physical system models built upon fundamental principles. Reversible solid oxide fuel cell (RSOFC) systems are considered for the bulk of the analysis for standalone, thermally self-sufficient systems using a combustor and resistive heaters. RSOFC systems are also considered for integration with renewable power for storage and dispatch of renewable power at various scales including grid-scale energy storage. Additionally, a nuclear reactor is coupled with a solid oxide electrolyzer system in order to study the ability of dispatching a nuclear power plant by shifting the heat from the turbine generators to the electrolyzer during periods of high renewable generation. Molten carbonate electrolysis used in a reformer-electrolyzer-purifier (REP) concept is considered for the generation of hydrogen from steam and natural gas where the power input is renewable resulting in a portion of renewable hydrogen from natural gas feedstock. The results of the work provide valuable insights into the steady-state and dynamic operation of RSOFC systems under various loads and system configurations. Integration with renewables, nuclear, and grid energy storage were studied and the benefits and challenges discussed. The REP integration with renewable power and natural gas feedstock was verified with experimental data and dynamic simulations were conducted.
Subjects/Keywords: Mechanical engineering; electrolysis; fuel cell; hydrogen; renewable; reversible; RSOFC
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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APA (6th Edition):
McVay, D. J. (2017). Evaluation of Dynamic Reversible Chemical Energy Storage with High Temperature Electrolysis. (Thesis). University of California – Irvine. Retrieved from http://www.escholarship.org/uc/item/02f1f4fn
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):
McVay, Derek Joseph. “Evaluation of Dynamic Reversible Chemical Energy Storage with High Temperature Electrolysis.” 2017. Thesis, University of California – Irvine. Accessed January 17, 2021.
http://www.escholarship.org/uc/item/02f1f4fn.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
McVay, Derek Joseph. “Evaluation of Dynamic Reversible Chemical Energy Storage with High Temperature Electrolysis.” 2017. Web. 17 Jan 2021.
Vancouver:
McVay DJ. Evaluation of Dynamic Reversible Chemical Energy Storage with High Temperature Electrolysis. [Internet] [Thesis]. University of California – Irvine; 2017. [cited 2021 Jan 17].
Available from: http://www.escholarship.org/uc/item/02f1f4fn.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
McVay DJ. Evaluation of Dynamic Reversible Chemical Energy Storage with High Temperature Electrolysis. [Thesis]. University of California – Irvine; 2017. Available from: http://www.escholarship.org/uc/item/02f1f4fn
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Syracuse University
26.
Kuang, Wenbin.
Design, Synthesis and Study of Thermomechanically Active Polymer Networks Based on Latent Crosslinking of Semicrystalline Polymers.
Degree: PhD, Biomedical and Chemical Engineering, 2017, Syracuse University
URL: https://surface.syr.edu/etd/813
► Demand has arisen rapidly for smart materials in the world of the need to develop and understand new functional products like plastics, rubber, adhesives,…
(more)
▼ Demand has arisen rapidly for smart materials in the world of the need to develop and understand new functional products like plastics, rubber, adhesives, fibers, and coatings. Such products are essentially composed of polymers, large molecules of high molecular weight with homogeneous or various repeating units, which researchers term “macromolecules” that engender specific structural, morphological, and physical and mechanical properties. Those polymers with the capacity to change their configuration in accordance with environmental alteration are specifically referred to as shape memory polymers (SMPs), attracting much interest of study both academically and industrially. Herein, this dissertation aims at design, fabrication, and characterization of novel crosslinkable semicrystalline polymeric materials utilizing different techniques and mechanisms in order to explore their special thermomechanical features as well as the possibilities for potential industrial application based on shape memory (SM) effects. Key aspects include use of modern polymer synthesis to tailor thermal and shape memory properties and the adoption of electrospinning processing techniques to form continuous, fine fibers that allow unique molecular modifications, study of enzymatic degradation behavior involving physical form and microstructural state, and unprecedented approaches of making new kinds of shape memory assisted self-healing (SMASH) materials and thermal-responsive self-
reversible actuators that require no human intervention. In the following is described the dissertation scope and organization.
Chapter 1 goes over background relating to material science within the scope of SM material, self-healing (SH) material, and actuators.
Chapter 2 outlines research conducted to achieve new compositions of matter and post-synthesis process, along with supporting characterization for the development of novel SMP materials with featuring tunable
reversible actuation capability under ambient stimulus. We prepared a family of crosslinkable (unsaturated), semicrystalline cyclooctene (CO)-based copolymers with varying second monomer and composition via ring opening metathesis polymerization (ROMP). The unsaturation enables covalent crosslinking of polymer chains, in the presence of select thermal initiator through compression molding, allowing subsequent formation of a temperature-responsive network that shows a
reversible two-way shape memory (2WSM) effect, indicative of crystallization-induced elongation upon cooling and melting-induced contraction upon heating when a constant, external stress is applied. Molecular, thermomechanical, and SM experiments were performed to investigate and tune the
reversible actuation of aforementioned copolymers for the purpose of yielding quantitative guidelines for tailoring material and actuation performance through variations in composition and process.
Chapter 3 seeks a latent-crosslinkable, mechanically flexible, fully thermoplastic shape memory polymer.…
Advisors/Committee Members: Patrick T. Mather, James H. Henderson.
Subjects/Keywords: Crosslinking; Reversible Actuation; Self-Heaing; Shape Memory; Synthesis; Engineering
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APA ·
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MLA ·
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Export
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APA (6th Edition):
Kuang, W. (2017). Design, Synthesis and Study of Thermomechanically Active Polymer Networks Based on Latent Crosslinking of Semicrystalline Polymers. (Doctoral Dissertation). Syracuse University. Retrieved from https://surface.syr.edu/etd/813
Chicago Manual of Style (16th Edition):
Kuang, Wenbin. “Design, Synthesis and Study of Thermomechanically Active Polymer Networks Based on Latent Crosslinking of Semicrystalline Polymers.” 2017. Doctoral Dissertation, Syracuse University. Accessed January 17, 2021.
https://surface.syr.edu/etd/813.
MLA Handbook (7th Edition):
Kuang, Wenbin. “Design, Synthesis and Study of Thermomechanically Active Polymer Networks Based on Latent Crosslinking of Semicrystalline Polymers.” 2017. Web. 17 Jan 2021.
Vancouver:
Kuang W. Design, Synthesis and Study of Thermomechanically Active Polymer Networks Based on Latent Crosslinking of Semicrystalline Polymers. [Internet] [Doctoral dissertation]. Syracuse University; 2017. [cited 2021 Jan 17].
Available from: https://surface.syr.edu/etd/813.
Council of Science Editors:
Kuang W. Design, Synthesis and Study of Thermomechanically Active Polymer Networks Based on Latent Crosslinking of Semicrystalline Polymers. [Doctoral Dissertation]. Syracuse University; 2017. Available from: https://surface.syr.edu/etd/813
Boston College
27.
Worthy, Amanda D.
The Use of Reversible Covalent Bonding and Induced
Intramolecularity to Achieve Selectivity and Rate Acceleration in
Organic Reactions.
Degree: PhD, Chemistry, 2013, Boston College
URL: http://dlib.bc.edu/islandora/object/bc-ir:101561
► Chapter 1. Catalytic directing group, I, which was designed with the ability to form a reversible covalent bond with a substrate and bind a metal,…
(more)
▼ Chapter 1. Catalytic directing group, I, which was
designed with the ability to form a
reversible covalent bond with a
substrate and bind a metal, was shown to direct the
hydroformylation of allylic amines. The efficient regioselective
hydroformylation of a variety of 1,2-disubstituted allylic
sulfonamides to form β-amino-aldehydes under mild conditions has
been shown. Chapter 2. Building off of the successful application
of I, enantioenriched catalytic directing group, II, was designed
and synthesized. It retained the essential features to direct
hydroformylation to obtain good regioselectivity while also
providing a chiral environment to induce absolute stereocontrol.
Under mild conditions, a variety of disubstituted olefins react to
give good yields and excellent enantioselectivites. Thus, the first
enantioselective reaction performed with a catalytic directing
group was demonstrated. Chapter 3. A new set of organocatalysts was
developed that benefits from
reversible covalent bonding and
induced intramolecularity. The desymmetrization of meso-1,2-diols
was accomplished using organocatalyst III, which was synthesized
easily and cheaply. Experimental results indicate that the
selectivity and increased reactivity are a result of the ability of
III to pre-organize the substrate through a
reversible, covalent
bond. A variety of cyclic and acylic substrates were shown to react
efficiently with good enantioselectivities under mild conditions.
The catalyst's ability to functionalize cis-1,2-diols selectively
indicated it might be successfully applied to site selective
catalysis. Thus, the selective functionalization of a secondary
alcohol in the presence of a primary alcohol was developed using a
combination of binding selectivity and stereoselectivity. The
(S)-enantiomer forms the secondary functionalized product while the
(R)-enantiomer forms the primary functionalized product with high
selectivity. As the enantiomers preferentially form different
functionalized products, a regiodivergent reaction on a racemic
mixture resulted giving two valuable enriched
products.
Advisors/Committee Members: Kian L. Tan (Thesis advisor).
Subjects/Keywords: catalysis; hydroformylation; induced intramolecularity; reversible covalent bonding; silylation; site selective functionalization
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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APA (6th Edition):
Worthy, A. D. (2013). The Use of Reversible Covalent Bonding and Induced
Intramolecularity to Achieve Selectivity and Rate Acceleration in
Organic Reactions. (Doctoral Dissertation). Boston College. Retrieved from http://dlib.bc.edu/islandora/object/bc-ir:101561
Chicago Manual of Style (16th Edition):
Worthy, Amanda D. “The Use of Reversible Covalent Bonding and Induced
Intramolecularity to Achieve Selectivity and Rate Acceleration in
Organic Reactions.” 2013. Doctoral Dissertation, Boston College. Accessed January 17, 2021.
http://dlib.bc.edu/islandora/object/bc-ir:101561.
MLA Handbook (7th Edition):
Worthy, Amanda D. “The Use of Reversible Covalent Bonding and Induced
Intramolecularity to Achieve Selectivity and Rate Acceleration in
Organic Reactions.” 2013. Web. 17 Jan 2021.
Vancouver:
Worthy AD. The Use of Reversible Covalent Bonding and Induced
Intramolecularity to Achieve Selectivity and Rate Acceleration in
Organic Reactions. [Internet] [Doctoral dissertation]. Boston College; 2013. [cited 2021 Jan 17].
Available from: http://dlib.bc.edu/islandora/object/bc-ir:101561.
Council of Science Editors:
Worthy AD. The Use of Reversible Covalent Bonding and Induced
Intramolecularity to Achieve Selectivity and Rate Acceleration in
Organic Reactions. [Doctoral Dissertation]. Boston College; 2013. Available from: http://dlib.bc.edu/islandora/object/bc-ir:101561
University of Cambridge
28.
GEORGES, Maureen Claire Alma.
Reversible Directed Phase Transfer of M4IIL4 and M4IIL6 Cages.
Degree: PhD, 2017, University of Cambridge
URL: https://www.repository.cam.ac.uk/handle/1810/267757
► A major function assessed by Nature is the transport of a cargo between two different media, such as anions through cell membranes. Mimicking this function…
(more)
▼ A major function assessed by Nature is the transport of a cargo between two different media, such as anions through cell membranes. Mimicking this function using complex systems is one of the biggest challenge of supramolecular chemistry. Metallo-organic cages are an important breakthrough in the encapsulation and transport of small molecules, providing a crucial platform for the development of systems chemistry. Binding a network member within a tetrahedral cage allows it to be hidden and then revealed upon receipt of a release signal, or transported as a cargo between spatially distant parts of a network. Larger capsules may also isolate subsystems from each other in the manner of vesicles. These dynamic architectures are synthesised by self-assembly, which involves the simultaneous formation of multiple coordinative and dynamic covalent linkages during the same overall synthetic process. Their shape and binding properties can be tuned by changing the subcomponents such as metals or ligands.
Great progress has been reported in recent years in the development of three-dimensional cages that can interact with specific guest species, but there are limitations associated with the transport of these systems. Recent work by Nitschke et al. have successfully addressed practical separations problems by transporting a tetrahedral cage and its cargo from water into an ionic liquid layer. However, this system is not ideal as the process is triggered by an anion exchange not by a direct stimulus.
This thesis reports the synthesis of an ionic liquid inspired tetrahedral system achieving reversible transport between water and an immiscible organic solvent driven by a change in temperature. Once the switchable capsules were obtained and characterised, their ability to move between different solvent phases upon heating was investigated. A capsule-mediated transport system as developed that is both directional and reversible. The flow of the capsule and its encapsulated cargo is directed using stimuli such as temperature modification. Ultimately an apparatus that allows the switchable capsules to move along a channel has been developed.
Subjects/Keywords: coordination cages; supramolecular; reversible phase transfer; temperature variations
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APA ·
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MLA ·
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CSE |
Export
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APA (6th Edition):
GEORGES, M. C. A. (2017). Reversible Directed Phase Transfer of M4IIL4 and M4IIL6 Cages. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/267757
Chicago Manual of Style (16th Edition):
GEORGES, Maureen Claire Alma. “Reversible Directed Phase Transfer of M4IIL4 and M4IIL6 Cages.” 2017. Doctoral Dissertation, University of Cambridge. Accessed January 17, 2021.
https://www.repository.cam.ac.uk/handle/1810/267757.
MLA Handbook (7th Edition):
GEORGES, Maureen Claire Alma. “Reversible Directed Phase Transfer of M4IIL4 and M4IIL6 Cages.” 2017. Web. 17 Jan 2021.
Vancouver:
GEORGES MCA. Reversible Directed Phase Transfer of M4IIL4 and M4IIL6 Cages. [Internet] [Doctoral dissertation]. University of Cambridge; 2017. [cited 2021 Jan 17].
Available from: https://www.repository.cam.ac.uk/handle/1810/267757.
Council of Science Editors:
GEORGES MCA. Reversible Directed Phase Transfer of M4IIL4 and M4IIL6 Cages. [Doctoral Dissertation]. University of Cambridge; 2017. Available from: https://www.repository.cam.ac.uk/handle/1810/267757
North-West University
29.
Moraal, Christina Maria.
The design, synthesis and evaluation of aminocaffeine derivatives as inhibitors of monoamine oxidase B / Moraal C.
Degree: 2011, North-West University
URL: http://hdl.handle.net/10394/7268
► Monoamine oxidase (MAO) is responsible for dopamine catabolism in the brain and therefore is especially important in the treatment of Parkinson's disease (PD). MAO–B inhibition…
(more)
▼ Monoamine oxidase (MAO) is responsible for dopamine catabolism in the brain and therefore is especially important in the treatment of Parkinson's disease (PD). MAO–B inhibition provides symptomatic relief by indirectly elevating dopamine levels in the PD brain. PD is caused by the loss of dopaminergic neurons in the substantia nigra and the formation of proteinaceous structures in the brain. The cause of idiopathic PD is unknown, but one theory states that reactive oxygen species (ROS), partly derived from the catalytic cycle of MAO, may be to blame for damaging dopaminergic neurons. Since MAO inhibitors may reduce the MAO–catalyzed production of ROS, these compounds may protect dopaminergic neurons against degeneration in PD. It is commonly accepted that by the time PD symptoms manifest, about 80% of striatal dopamine has been lost.
MAO is present as two subtypes in the human brain, namely MAO–A and MAO–B. MAOs are found mainly attached to the mitochondrial membrane and is responsible for the oxidative deamination of various monoamines, including dopamine. MAO is a dimeric enzyme which operates in conjunction with a co–factor, flavin adenine dinucleotide (FAD), to which it is covalently bound. The flavin is in a bent conformation, which assists the catalytic activity of MAO. As mentioned above, the catalytic action of MAO also produces harmful substances such as hydrogen peroxide, ammonia, aldehydes and may also increase the levels of hydroxyl radicals. In the healthy brain, these substances are metabolized rapidly, but the PD brain may exhibit reduced clearance of these species. Thus the inhibition of MAOs may be beneficial to the PD sufferer as it indirectly increases dopamine levels in the brain and may also slow the formation of harmful substances.
MAO inhibitors, of the MAO–A type, were first used as anti–depressants. It was these drugs that first prompted researchers to explore MAO inhibitors as novel anti–parkinsonian drugs, as MAO–A inhibition slows the degradation of dopamine. Two types of inhibition modes exist, irreversible and reversible inhibition. Irreversible inhibitors do not allow for competition with the substrate and inactivate the enzyme permanently. Selegiline, a propargyl amine derivative, is an example of an irreversible MAO–B selective inhibitor. The major disadvantage of irreversible inhibitors is that after terminating treatment, recovery of the enzyme activity may require several weeks, since the turnover rate for the biosynthesis of MAO in the human brain may be as much as 40 days. Reversible inhibitors have better safety profiles since they allow for competition with the substrate. (E)–8–(3–Chlorostyryl)caffeine (CSC) is an example of a reversible inhibitor of MAO–B and is also an antagonist of the adenosine A2A receptor. Since antagonism of A2A receptors also produces
an antiparkinsonian effect, dual acting compounds such as CSC, which block both the A2A receptors and MAO–B, may have an enhanced therapeutic potential in PD therapy.
Current PD therapy available only treats the…
Subjects/Keywords: Monoamine oxidase;
Reversible inhibition;
Caffeine;
Aminocaffeine;
Monoamienoksidase;
Omkeerbare inhibisie;
Kaffeïen;
Aminokaffeïen
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APA (6th Edition):
Moraal, C. M. (2011). The design, synthesis and evaluation of aminocaffeine derivatives as inhibitors of monoamine oxidase B / Moraal C.
(Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/7268
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):
Moraal, Christina Maria. “The design, synthesis and evaluation of aminocaffeine derivatives as inhibitors of monoamine oxidase B / Moraal C.
” 2011. Thesis, North-West University. Accessed January 17, 2021.
http://hdl.handle.net/10394/7268.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Moraal, Christina Maria. “The design, synthesis and evaluation of aminocaffeine derivatives as inhibitors of monoamine oxidase B / Moraal C.
” 2011. Web. 17 Jan 2021.
Vancouver:
Moraal CM. The design, synthesis and evaluation of aminocaffeine derivatives as inhibitors of monoamine oxidase B / Moraal C.
[Internet] [Thesis]. North-West University; 2011. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/10394/7268.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Moraal CM. The design, synthesis and evaluation of aminocaffeine derivatives as inhibitors of monoamine oxidase B / Moraal C.
[Thesis]. North-West University; 2011. Available from: http://hdl.handle.net/10394/7268
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Boston University
30.
Jariwala, Kavita.
Knowledge about Nexplanon among adolescents in an urban pediatric emergency room.
Degree: MS, Medical Sciences, 2016, Boston University
URL: http://hdl.handle.net/2144/19733
► Adolescent (14-17 year-olds) and young adult (18-20 year-olds) women account for a disproportionate 20% of the total number of unintended pregnancies that occur among women…
(more)
▼ Adolescent (14-17 year-olds) and young adult (18-20 year-olds) women account for a disproportionate 20% of the total number of unintended pregnancies that occur among women of all reproductive ages (14-55 year-olds) each year in the US. Nearly half (41%) of all unintended pregnancies result from the 18% of women who report inconsistent, incorrect, or no use of their contraceptive method. Evidence shows that a large proportion of these young women, especially those who are sexually active, come to the emergency department for their core sexual and reproductive health care needs. By obtaining a better understanding of the sexual and reproductive health needs and preferences of an urban population that is disproportionately low income and ethnically and racially diverse, our hope is to maximize adolescent and young adult accessibility to contraceptive services most feasible in the PED environment such as Nexplanon, in addition to the provision of comprehensive contraceptive counseling and education.
OBJECTIVES: The first objective of this subgroup analysis is to determine the percentage of adolescent and young adult females presenting to an urban PED who are familiar with Nexplanon and to describe the demographic, sexual health, and contraceptive use characteristics of these young women. The second main objective of our study is to evaluate the sources of Nexplanon-related information reported by respondents familiar with Nexplanon. In addition to the main objectives, we also determine participant willingness to initiate or switch to Nexplanon® and receptivity to learning about contraceptive methods during a related or nonrelated visit to the PED.
METHODS: This is a cross-sectional descriptive study using a paper-based anonymous questionnaire distributed to female patients, ages 16-21 years, presenting to a Boston urban pediatric emergency department (PED). This is a sub-group analysis of a larger study aimed at describing the contraceptive use history of young women who present to the PED. To identify if any statistically significant categorical variables existed between the two assigned groups, univariate analysis was performed using Chi-squared tests. Odds ratios with 95% confidence intervals (CIs) were obtained for the relationship between participants who have heard of Nexplanon and the three statistically significant variables: history of STDs, gravidity, and prior sexual intercourse with a male. Mean and Standard Deviation were used to describe the one continuous variable, age, followed by univariate analysis using independent t-test. Statistical significance was indicated using p-values for the categorical variables and odds ratio with 95% CI for the continuous variable—age.
RESULTS: Of the 366 adolescent and young adult females included in our subgroup analysis, 230 (62.8%) indicated they were familiar with Nexplanon. We found that female participants familiar with Nexplanon were 1.3 times more likely to have had a prior STI, twice as likely to have had one or more previous pregnancies, and 3.5…
Subjects/Keywords: Public health; Adolescents; Long-acting reversible contraception; Pediatric emergency room
Record Details
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Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jariwala, K. (2016). Knowledge about Nexplanon among adolescents in an urban pediatric emergency room. (Masters Thesis). Boston University. Retrieved from http://hdl.handle.net/2144/19733
Chicago Manual of Style (16th Edition):
Jariwala, Kavita. “Knowledge about Nexplanon among adolescents in an urban pediatric emergency room.” 2016. Masters Thesis, Boston University. Accessed January 17, 2021.
http://hdl.handle.net/2144/19733.
MLA Handbook (7th Edition):
Jariwala, Kavita. “Knowledge about Nexplanon among adolescents in an urban pediatric emergency room.” 2016. Web. 17 Jan 2021.
Vancouver:
Jariwala K. Knowledge about Nexplanon among adolescents in an urban pediatric emergency room. [Internet] [Masters thesis]. Boston University; 2016. [cited 2021 Jan 17].
Available from: http://hdl.handle.net/2144/19733.
Council of Science Editors:
Jariwala K. Knowledge about Nexplanon among adolescents in an urban pediatric emergency room. [Masters Thesis]. Boston University; 2016. Available from: http://hdl.handle.net/2144/19733
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Open Access Theses and Dissertations