publisher:("Rice University")

Rice University

1. Abel, Joseph A. Sunbelt Civil Rights| Race, Labor, and Politics in the Fort Worth Aircraft Industry, 1940 – 1980.

Degree: 2011, Rice University

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=3464296

► This dissertation critically engages the growing literature on the "long" civil rights movement and the African American struggle for equal employment. Focusing on the… (more)

▼ This dissertation critically engages the growing literature on the "long" civil rights movement and the African American struggle for equal employment. Focusing on the Fort Worth plants of General Dynamics and its local competitors, this study argues that the federal government's commitment to fair employment can best be understood by examining its attempts to oversee the racial practices of southern defense contractors both prior to passage of the 1964 Civil Rights Act. From World War II onward, the aircraft factories of north Texas became testing grounds for federal civil rights reform as a variety of non- statutory executive agencies attempted to root out employment discrimination. However, although they raised awareness about the problem, these early efforts yielded few results. Because the agencies involved refused to utilize their punitive authority or counter the industry's unstable demand for labor through rational economic planning, workplace inequality continued to be the norm. Ultimately, federal policymakers' reluctance to reform the underlying structural causes of employment discrimination among southern defense contractors set a precedent that has continued to hinder African American economic advancement. This dissertation also reevaluates assumptions regarding southern unions and the response of white workers to the civil rights movement. Just as the economic relationship between the federal government and defense contractors gave rise to early mandates on fair employment, the unstable demand for labor and adversarial management style of the Fort Worth aircraft manufacturers nurtured a form of unionism unique within the South for its moderate treatment of African Americans. Long before most labor organizations in the region resigned themselves to similar philosophies, the local aircraft workers' unions adopted a pragmatic approach toward racial questions based largely on their need to counter managerial abuses and provide job security. Whatever their personal prejudices may have been, local white labor leaders nevertheless protected the economic rights of African Americans through forceful shopfloor representation and the negotiation of inclusionary contracts. By demanding a workplace in which management's actions were constrained by a set of fairly negotiated contractual rules, Fort Worth's aircraft unions struck an important if unintended blow against the arbitrariness of employment discrimination.

Subjects/Keywords: African American Studies; History, Black; History, United States; Sociology, Industrial and Labor Relations

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APA (6^th Edition):

Abel, J. A. (2011). Sunbelt Civil Rights| Race, Labor, and Politics in the Fort Worth Aircraft Industry, 1940 – 1980. (Thesis). Rice University. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=3464296

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Abel, Joseph A. “Sunbelt Civil Rights| Race, Labor, and Politics in the Fort Worth Aircraft Industry, 1940 – 1980.” 2011. Thesis, Rice University. Accessed May 25, 2020. http://pqdtopen.proquest.com/#viewpdf?dispub=3464296.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Abel, Joseph A. “Sunbelt Civil Rights| Race, Labor, and Politics in the Fort Worth Aircraft Industry, 1940 – 1980.” 2011. Web. 25 May 2020.

Vancouver:

Abel JA. Sunbelt Civil Rights| Race, Labor, and Politics in the Fort Worth Aircraft Industry, 1940 – 1980. [Internet] [Thesis]. Rice University; 2011. [cited 2020 May 25]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3464296.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Abel JA. Sunbelt Civil Rights| Race, Labor, and Politics in the Fort Worth Aircraft Industry, 1940 – 1980. [Thesis]. Rice University; 2011. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3464296

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Rice University

2. Ye, Ruquan. Nanomaterials in Diverse Dimensions: Synthesis, Properties and Applications.

Degree: PhD, Natural Sciences, 2017, Rice University

URL: http://hdl.handle.net/1911/105487

► The discovery of C60 at Rice University has boosted the development of nanotechnology in the past decades. Materials at nanoscale possess distinct and excellent properties… (more)

Subjects/Keywords: nanomaterials; graphene; graphene quantum dots; electrocatalysis

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APA (6^th Edition):

Ye, R. (2017). Nanomaterials in Diverse Dimensions: Synthesis, Properties and Applications. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/105487

Chicago Manual of Style (16^th Edition):

Ye, Ruquan. “Nanomaterials in Diverse Dimensions: Synthesis, Properties and Applications.” 2017. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/105487.

MLA Handbook (7^th Edition):

Ye, Ruquan. “Nanomaterials in Diverse Dimensions: Synthesis, Properties and Applications.” 2017. Web. 25 May 2020.

Vancouver:

Ye R. Nanomaterials in Diverse Dimensions: Synthesis, Properties and Applications. [Internet] [Doctoral dissertation]. Rice University; 2017. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/105487.

Council of Science Editors:

Ye R. Nanomaterials in Diverse Dimensions: Synthesis, Properties and Applications. [Doctoral Dissertation]. Rice University; 2017. Available from: http://hdl.handle.net/1911/105487

Rice University

3. Escobar, Ana Cristina. Performing Poché.

Degree: M. Arch., Architecture, 2019, Rice University

URL: http://hdl.handle.net/1911/107978

► The character of a house may be defined through the relationship between its architecture and its objects. The extent to which these two elements are… (more)

Subjects/Keywords: poche; objects; interior; domestic; display; storage; house; curtains

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APA (6^th Edition):

Escobar, A. C. (2019). Performing Poché. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/107978

Chicago Manual of Style (16^th Edition):

Escobar, Ana Cristina. “Performing Poché.” 2019. Masters Thesis, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/107978.

MLA Handbook (7^th Edition):

Escobar, Ana Cristina. “Performing Poché.” 2019. Web. 25 May 2020.

Vancouver:

Escobar AC. Performing Poché. [Internet] [Masters thesis]. Rice University; 2019. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/107978.

Council of Science Editors:

Escobar AC. Performing Poché. [Masters Thesis]. Rice University; 2019. Available from: http://hdl.handle.net/1911/107978

Rice University

4. Lin, Pei-Hsuan. Lattice-Boltzmann Modeling of Potential Fluid Flow Impairment Caused by Asphaltene Deposition in Porous Media.

Degree: PhD, Engineering, 2018, Rice University

URL: http://hdl.handle.net/1911/105917

► Asphaltene deposition in porous media has significant effects on oil flow during primary and secondary oil production. When asphaltenes deposit in porous media, the pore… (more)

Subjects/Keywords: Asphaltene Deposition; Lattice Boltzmann Method; Porous Media Modeling; Computational Fluid Dynamics

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APA (6^th Edition):

Lin, P. (2018). Lattice-Boltzmann Modeling of Potential Fluid Flow Impairment Caused by Asphaltene Deposition in Porous Media. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/105917

Chicago Manual of Style (16^th Edition):

Lin, Pei-Hsuan. “Lattice-Boltzmann Modeling of Potential Fluid Flow Impairment Caused by Asphaltene Deposition in Porous Media.” 2018. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/105917.

MLA Handbook (7^th Edition):

Lin, Pei-Hsuan. “Lattice-Boltzmann Modeling of Potential Fluid Flow Impairment Caused by Asphaltene Deposition in Porous Media.” 2018. Web. 25 May 2020.

Vancouver:

Lin P. Lattice-Boltzmann Modeling of Potential Fluid Flow Impairment Caused by Asphaltene Deposition in Porous Media. [Internet] [Doctoral dissertation]. Rice University; 2018. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/105917.

Council of Science Editors:

Lin P. Lattice-Boltzmann Modeling of Potential Fluid Flow Impairment Caused by Asphaltene Deposition in Porous Media. [Doctoral Dissertation]. Rice University; 2018. Available from: http://hdl.handle.net/1911/105917

Rice University

5. Zhang, Yu. Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection.

Degree: PhD, Natural Sciences, 2015, Rice University

URL: http://hdl.handle.net/1911/90374

► Metallic nanoparticles support collective oscillations of conduction-band electrons, in response to light incidences. Such phenomenon is called localized surface plasmons, which confine large electromagnetic fields… (more)

▼ Metallic nanoparticles support collective oscillations of conduction-band electrons, in response to light incidences. Such phenomenon is called localized surface plasmons, which confine large electromagnetic fields in sub-wavelength dimensions, enabling the light manipulation at the nanoscale. Plasmonic nanoparticles have established many promising applications, such as infrared photodetections, photothermal generation steam, chemical photocatalysis, cancer therapy and surface-enhanced spectroscopy. More interesting, plasmonic nanostructures could generate strong nonlinear-optical effects by relatively low excitation powers, and have been widely used in different processes like second-harmonic generations (SHG), difference-frequency generation (DFG), third-harmonic generation (THG), optical four-wave mixing (FWM) and surface-enhanced Raman scattering (SERS). This thesis will focused on two types of second-order and two types of third-order nonlinear-optical processes, enhanced by artificial plasmonic nanostructures. Firstly, the second-harmonic generation on a single nanocup is studied, and the signal is demonstrated to have increasing intensity as the 3D symmetry of the nanocup is reduced. Then, optical four-wave mixing is generated on a plasmonic nanocluster which supports a coherent oscillation of two Fano resonances. The electric fields from both Fano resonances add coherently resulting in strong fields and correspondingly large signals. This nanocluster has a large color-conversion efficiency, and could be used for building blocks of optical processors that convert two input colors into a third color. Later, one specific application of four-wave mixing, the coherent anti-Stokes Raman scattering (CARS) is studied. By exploiting the unique light harvesting properties of a Fano resonance of a specially designed nano-quadrumer, the surface-enhanced CARS (SECARS) technique amplifies the Raman signals of molecules on the quadrumer by about 100 billion times. This enables the accurate identification of a single molecule with less than 20 atoms. Finally, a plasmon-enhanced optical parametric amplifier (OPA) is designed: A BaTiO3 nanosphere is used as the nonlinear OPA medium; A nanoshell wrapping this nanosphere is used as a triply resonant cavity for all the pump, signal and idler beams; The generated idler beam has a wide tuning range in the near-infrared by changing the delay between the narrowband pump beam and broadband signal beam. This surface-plasmon-enhanced OPA could be an efficient light source working in the infrared regime, with large wavelength tunabilities and nanoscale dimensions easily integrated into the next-generation optoelectronic devices. Advisors/Committee Members: Halas, Naomi J (committee member), Nordlander, Peter J (committee member), Link, Stephan (committee member).

Subjects/Keywords: Nonlinear Optics; Nonlinear Plasmonics; Second-harmonic Generation; Four-wave Mixing; Optical Parametric Amplification; Coherent Raman

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APA (6^th Edition):

Zhang, Y. (2015). Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/90374

Chicago Manual of Style (16^th Edition):

Zhang, Yu. “Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection.” 2015. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/90374.

MLA Handbook (7^th Edition):

Zhang, Yu. “Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection.” 2015. Web. 25 May 2020.

Vancouver:

Zhang Y. Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/90374.

Council of Science Editors:

Zhang Y. Nonlinear Nanophotonic Systems for Harmonic Generation, Parametric Amplification, Optical Processing and Single-Molecule Detection. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/90374

Rice University

6. Teimouri, Hamid. Stochastic Modeling of Dynamical Processes in Biological Signaling and Cellular Transport.

Degree: PhD, Natural Sciences, 2016, Rice University

URL: http://hdl.handle.net/1911/93841

► Successful cellular function and organ development rely on the effective transport of proteins and other biomolecules to specific positions. There are two basic mechanisms for… (more)

▼ Successful cellular function and organ development rely on the effective transport of proteins and other biomolecules to specific positions. There are two basic mechanisms for biological transport: passive diffusion and motor-driven active transport. This thesis presents theoretical investigations of several biophysical problems in the context of active and passive transport. In the matter of passive diffusion, we investigate fundamental processes of biological development that are governed by multiple signaling molecules that create non-uniform concentration profiles known as morphogen gradients. It is widely believed that the establishment of morphogen gradients is a result of complex processes that involve diffusion and degradation of locally produced signaling molecules. We have developed discrete-state stochastic and continuum mean field approaches to investigate the corresponding reaction-diffusion models. In the case of active transport, we investigate the fundamental role of local interactions between molecular motors by analyzing a new class of totally asymmetric exclusion processes where interactions are accounted for in a thermodynamically consistent fashion. This allows us to explicitly connect microscopic features of motor proteins with their collective dynamic properties. Our theoretical analysis that combines various mean-field calculations and computer simulations suggests that the dynamic properties of molecular motors strongly depend on the interactions, and that the correlations are stronger for interacting motor proteins. Furthermore, we investigate all times dynamics of continuous-time random walks (CTRWs). The concept of continuous-time random walks (CTRW) is a generalization of ordinary random walk models, and it is a powerful tool for investigating a broad spectrum of phenomena in natural, engineering, social, and economic sciences. Recently, several theoretical approaches have been developed that allowed to analyze explicitly dynamics of CTRW at all times, which is critically important for understanding mechanisms of underlying phenomena. However, theoretical analysis has been done mostly for systems with a simple geometry. Here, we extend the original method based on generalized master equations to analyze all-time dynamics of CTRW models on complex networks. Advisors/Committee Members: Kolomeisky, Anatoly B. (advisor), Landes, Christy (committee member), Yakobson, Boris I. (committee member).

Subjects/Keywords: Biological development; morphogen gradient; motor proteins; continuous time random walks

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APA (6^th Edition):

Teimouri, H. (2016). Stochastic Modeling of Dynamical Processes in Biological Signaling and Cellular Transport. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/93841

Chicago Manual of Style (16^th Edition):

Teimouri, Hamid. “Stochastic Modeling of Dynamical Processes in Biological Signaling and Cellular Transport.” 2016. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/93841.

MLA Handbook (7^th Edition):

Teimouri, Hamid. “Stochastic Modeling of Dynamical Processes in Biological Signaling and Cellular Transport.” 2016. Web. 25 May 2020.

Vancouver:

Teimouri H. Stochastic Modeling of Dynamical Processes in Biological Signaling and Cellular Transport. [Internet] [Doctoral dissertation]. Rice University; 2016. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/93841.

Council of Science Editors:

Teimouri H. Stochastic Modeling of Dynamical Processes in Biological Signaling and Cellular Transport. [Doctoral Dissertation]. Rice University; 2016. Available from: http://hdl.handle.net/1911/93841

Rice University

7. Ghosh, Kamalika. Personality Traits, Prosocial Knowledge, Charismatic Leadership Behavior, and Clinical Performance of Indian Medical Students.

Degree: MA, Social Sciences, 2016, Rice University

URL: http://hdl.handle.net/1911/93842

► Abstract This study replicates and extends findings reported by Ghosh, Motowidlo, and Nath (2015) that Indian medical students’ prosocial knowledge is positively correlated with their… (more)

Subjects/Keywords: Prosocial Knowledge; High Power Distance Culture

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APA (6^th Edition):

Ghosh, K. (2016). Personality Traits, Prosocial Knowledge, Charismatic Leadership Behavior, and Clinical Performance of Indian Medical Students. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/93842

Chicago Manual of Style (16^th Edition):

Ghosh, Kamalika. “Personality Traits, Prosocial Knowledge, Charismatic Leadership Behavior, and Clinical Performance of Indian Medical Students.” 2016. Masters Thesis, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/93842.

MLA Handbook (7^th Edition):

Ghosh, Kamalika. “Personality Traits, Prosocial Knowledge, Charismatic Leadership Behavior, and Clinical Performance of Indian Medical Students.” 2016. Web. 25 May 2020.

Vancouver:

Ghosh K. Personality Traits, Prosocial Knowledge, Charismatic Leadership Behavior, and Clinical Performance of Indian Medical Students. [Internet] [Masters thesis]. Rice University; 2016. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/93842.

Council of Science Editors:

Ghosh K. Personality Traits, Prosocial Knowledge, Charismatic Leadership Behavior, and Clinical Performance of Indian Medical Students. [Masters Thesis]. Rice University; 2016. Available from: http://hdl.handle.net/1911/93842

Rice University

8. Dyer, Eva Lauren. New Theory and Methods for Signals in Unions of Subspaces.

Degree: PhD, Engineering, 2014, Rice University

URL: http://hdl.handle.net/1911/94222

► The rapid development and availability of cheap storage and sensing devices has quickly produced a deluge of high-dimensional data. While the dimensionality of modern datasets… (more)

Subjects/Keywords: union of subspaces; sparse recovery; subspace clustering

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APA (6^th Edition):

Dyer, E. L. (2014). New Theory and Methods for Signals in Unions of Subspaces. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/94222

Chicago Manual of Style (16^th Edition):

Dyer, Eva Lauren. “New Theory and Methods for Signals in Unions of Subspaces.” 2014. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/94222.

MLA Handbook (7^th Edition):

Dyer, Eva Lauren. “New Theory and Methods for Signals in Unions of Subspaces.” 2014. Web. 25 May 2020.

Vancouver:

Dyer EL. New Theory and Methods for Signals in Unions of Subspaces. [Internet] [Doctoral dissertation]. Rice University; 2014. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/94222.

Council of Science Editors:

Dyer EL. New Theory and Methods for Signals in Unions of Subspaces. [Doctoral Dissertation]. Rice University; 2014. Available from: http://hdl.handle.net/1911/94222

Rice University

9. Key, Scott Austin. FOME: Broadening Chemical Architecture.

Degree: M. Arch., Architecture, 2015, Rice University

URL: http://hdl.handle.net/1911/94282

► In his essay, Chemical Architecture (Log 23), Greg Lynn writes that “[t]here is a sea change going on in the world of construction: the shift… (more)

Subjects/Keywords: foam; expanding foam; chemical architecture; Greg Lynn; pneumatic; inflatable; pneumatic formwork; inflatable formwork; spray foam

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APA (6^th Edition):

Key, S. A. (2015). FOME: Broadening Chemical Architecture. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/94282

Chicago Manual of Style (16^th Edition):

Key, Scott Austin. “FOME: Broadening Chemical Architecture.” 2015. Masters Thesis, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/94282.

MLA Handbook (7^th Edition):

Key, Scott Austin. “FOME: Broadening Chemical Architecture.” 2015. Web. 25 May 2020.

Vancouver:

Key SA. FOME: Broadening Chemical Architecture. [Internet] [Masters thesis]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/94282.

Council of Science Editors:

Key SA. FOME: Broadening Chemical Architecture. [Masters Thesis]. Rice University; 2015. Available from: http://hdl.handle.net/1911/94282

Rice University

10. Huff, Sarah Anne. Modeling the influence of large woody debris on delta morphology and longshore sediment transport using the Brazos delta.

Degree: MS, Natural Sciences, 2015, Rice University

URL: http://hdl.handle.net/1911/94283

► Large woody debris' (LWD) role in coastal sediment dynamics is understudied, but yet is an extremely important consideration in the face of modern climate change… (more)

▼ Large woody debris' (LWD) role in coastal sediment dynamics is understudied, but yet is an extremely important consideration in the face of modern climate change and coastal erosion. In addition to amplified aeolian sediment capture due to increased roughness of the shoreface, LWD has implications for reduction of sediment transport capacity along the shoreface. Here, we examine the impact of increased woody debris concentration within the littoral zone and relate this to differential longshore sediment transport rates. We hypothesize that woody debris concentration and longshore sediment transport can be linked through a dimensionless index for use in most longshore sediment transport equations. Using a numerical model constrained by data collected from field studies, our results show that increased woody debris at the shoreface is inversely related to longshore sediment transport rates. Increased roughness due to woody debris results in a loss of stress available to mobilize sediment. Our model allows for first-order predictions of longshore sediment transport based on woody debris concentrations at the shoreline. Field surveys of the modern Brazos river delta in the Gulf of Mexico reveal an abundance of large woody debris along the coastline and within the delta matrix. There is a multitude of aerial photographs and bathymetric maps documenting the relative stability of the modern Brazos River deltas despite variable sediment discharge and the same wave climate that resulted in rapid erosion of the pre-engineered-diversion old Brazos delta. Despite their similar sediment volume and wave climate characteristics, the two deltas show very different morphologies in times of relaxed sediment discharge. With our model, we propose that the large quantities of woody debris sequestered on the modern delta may result in minimal longshore sediment transport along the delta, thereby preserving delta morphology amongst an energetic wave climate. Advisors/Committee Members: Nittrouer, Jeffrey A. (advisor), Anderson, John B. (committee member), Lorenzo-Trueba, Jorge (committee member), Masiello, Carrie A. (committee member).

Subjects/Keywords: Brazos delta; wood; woody debris; sediment; wave; morphodynamics

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APA (6^th Edition):

Huff, S. A. (2015). Modeling the influence of large woody debris on delta morphology and longshore sediment transport using the Brazos delta. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/94283

Chicago Manual of Style (16^th Edition):

Huff, Sarah Anne. “Modeling the influence of large woody debris on delta morphology and longshore sediment transport using the Brazos delta.” 2015. Masters Thesis, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/94283.

MLA Handbook (7^th Edition):

Huff, Sarah Anne. “Modeling the influence of large woody debris on delta morphology and longshore sediment transport using the Brazos delta.” 2015. Web. 25 May 2020.

Vancouver:

Huff SA. Modeling the influence of large woody debris on delta morphology and longshore sediment transport using the Brazos delta. [Internet] [Masters thesis]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/94283.

Council of Science Editors:

Huff SA. Modeling the influence of large woody debris on delta morphology and longshore sediment transport using the Brazos delta. [Masters Thesis]. Rice University; 2015. Available from: http://hdl.handle.net/1911/94283

Rice University

11. Lin, Yen-Hao. All-Conjugated Block Copolymers for Organic Photovoltaics.

Degree: PhD, Engineering, 2015, Rice University

URL: http://hdl.handle.net/1911/94285

► Organic photovoltaics (OPVs) are a promising source of alternative energy due to cost effectiveness and process simplicity. However, the performance of OPVs must be improved… (more)

▼ Organic photovoltaics (OPVs) are a promising source of alternative energy due to cost effectiveness and process simplicity. However, the performance of OPVs must be improved to produce viable devices. This can be achieved by optimizing the optoelectronic properties of constituent materials, tuning the nanostructures of materials within active layer of OPVs and defining a well-defined interface between electron-donor materials and electron-acceptor materials. The above opportunities can potentially be addressed with using all-conjugated block copolymers in that self-assembly of block copolymers can lead to well-defined nanostructures driven by thermodynamics. The focus of this thesis is on the synthesis and development of all-conjugated block copolymers in which one block is an electron-donor polymer and the other is an electron-acceptor polymer. We focus primarily on poly(3-hexylthiophene) (P3HT)-based block copolymers in which the electron-donor P3HT is made from Grignard metathesis polymerization (GRIM) and the other block is synthesized by Suzuki-Miyaura polycondensation reaction for wide variety of electron-acceptor polymers. Subsequently, the nanostructures of polymers were studied on a model series of all-conjugated block copolymer: poly(3-hexylthiophene)—block—poly[2,7-(9′,9′-dioctyl-fluorene) (P3HT–b–PF) under different processing conditions with using differential scanning calorimetry (DSC) and grazing-incidence X-ray scattering (GIXS). This reveals strong process-structure-property relationships of all-conjugated block copolymers. Furthermore, using our two-step synthetic route, we prepared an all-conjugated block copolymer poly(3-hexylthiophene)—block—poly[2,7-(9′,9′-dioctyl-fluorene)-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′,-benzothiadiazole)] (P3HT–b–PFTBT) that exhibits over 3% PCEs as the active layer in a solution processed OPV due to the formation of lamellae of the block copolymers and preferential π-π stacking direction of the P3HT perpendicular to the substrate. In addition to covalently linked block copolymers, we applied a quadruple hydrogen group, 2-ureido-4[1H]-pyrimidinone (UPy), as polymeric end functionalities to reduce macro-phase separation in polymer blends. In the polymer blends OPVs comprised of P3HT and PFTBT, the UPy hydrogen bonding group reduces macro-phase separation in polymer blends and leads to improved power conversion efficiency of OPVs from 0.43% to 0.77% under 155 °C annealing condition. This thesis demonstrates that both the covalently linked and hydrogen bonding linked all-conjugated block copolymers are potential to enhance performance of OPVs. Furthermore, with the advancement in synthetic techniques and better understandings on structure-processing-property relationships of all-conjugated block copolymers, we are able to apply those into more emerging conjugated polymers and engineer molecules for efficient energy generation in OPVs. Advisors/Committee Members: Verduzco, Rafael (advisor), Wong, Michael S (committee member), Barron, Andrew R (committee member).

Subjects/Keywords: All-conjugated block copolymers; organic photovoltaics; polymer synthesis; X-ray scattering

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APA (6^th Edition):

Lin, Y. (2015). All-Conjugated Block Copolymers for Organic Photovoltaics. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/94285

Chicago Manual of Style (16^th Edition):

Lin, Yen-Hao. “All-Conjugated Block Copolymers for Organic Photovoltaics.” 2015. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/94285.

MLA Handbook (7^th Edition):

Lin, Yen-Hao. “All-Conjugated Block Copolymers for Organic Photovoltaics.” 2015. Web. 25 May 2020.

Vancouver:

Lin Y. All-Conjugated Block Copolymers for Organic Photovoltaics. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/94285.

Council of Science Editors:

Lin Y. All-Conjugated Block Copolymers for Organic Photovoltaics. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/94285

Rice University

12. Rodriguez-Moya, Maria. Systems biology approaches in metabolic engineering: hasrnessing the potential of proteomics to understand and engineer metabolism.

Degree: PhD, Engineering, 2015, Rice University

URL: http://hdl.handle.net/1911/94286

► The genomic revolution has powered the development of numerous genetic sequencing tools, which have contributed to unveiling the genomes of different life forms. This boom… (more)

▼ The genomic revolution has powered the development of numerous genetic sequencing tools, which have contributed to unveiling the genomes of different life forms. This boom has impacted the development of techniques to efficiently manipulate organisms through metabolic engineering and synthetic biology, and of systems biology tools for the analysis of cellular systems via functional genomics. Among functional genomics, proteomics provides valuable insights on the entire set of proteins, which are the main components of the physiological pathways in the cell. In this study, three different systems were analyzed via proteomic profiling to understand metabolism and identify targets for engineering. First, the toxic response of Escherichia coli to short-chain fatty acids was assessed in order to improve tolerance and productivity of these molecules for industrial applications. Nine proteins were identified as being differentially expressed under octanoic acid stress. Subsequent studies of deletion and overexpression mutants for the selected proteins led to identification of OmpF, an outer membrane porin, as having the largest effect on fatty acid tolerance. OmpF was proposed as a transporter of fatty acids across the cell membrane, which can facilitate its import when present in the extracellular medium, therefore causing a decrease in intracellular pH. Utilization of glycerol by E. coli under anaerobic conditions was also studied in order to gain insights on the system level effect of this unconventional but advantageous feedstock with potential to be used in chemical and fuel production. In this study, wild-type E. coli was compared to the adhE deficient mutant under glycerol-fermenting and non glycerol-fermenting states. Twenty-six differentially expressed proteins were identified as being involved in known metabolic routes for glycerol utilization, while others suggested that amino acid metabolism, and phosphate and magnesium levels play key roles in glycerol fermentation. Lastly, the effects of mild hypothermia on the proteome of CHO cells were also studied with the goal of understanding metabolic state changes in response to a lower culture temperature. Eight differentially expressed proteins were identified suggesting that secretion and redox processes are the main systems affected by mild hypothermia. The studies presented in this thesis validated the potential of proteomics as a tool for characterizing metabolic systems and identifying targets for the engineering and development of viable biofactories. Advisors/Committee Members: Gonzalez, Ramon (advisor), Segatori, Laura (committee member), San, Ka-Yiu (committee member).

Subjects/Keywords: omics; proteomics; metabolic engineering; Escherichia coli; CHO cells

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APA (6^th Edition):

Rodriguez-Moya, M. (2015). Systems biology approaches in metabolic engineering: hasrnessing the potential of proteomics to understand and engineer metabolism. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/94286

Chicago Manual of Style (16^th Edition):

Rodriguez-Moya, Maria. “Systems biology approaches in metabolic engineering: hasrnessing the potential of proteomics to understand and engineer metabolism.” 2015. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/94286.

MLA Handbook (7^th Edition):

Rodriguez-Moya, Maria. “Systems biology approaches in metabolic engineering: hasrnessing the potential of proteomics to understand and engineer metabolism.” 2015. Web. 25 May 2020.

Vancouver:

Rodriguez-Moya M. Systems biology approaches in metabolic engineering: hasrnessing the potential of proteomics to understand and engineer metabolism. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/94286.

Council of Science Editors:

Rodriguez-Moya M. Systems biology approaches in metabolic engineering: hasrnessing the potential of proteomics to understand and engineer metabolism. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/94286

Rice University

13. Ksiazkiewicz, Aleksander Jan. Genetic Links among Ideology, Cognitive Style, Big Five Personality, and Executive Functions.

Degree: PhD, Social Sciences, 2015, Rice University

URL: http://hdl.handle.net/1911/95198

► This dissertation provides novel insights into the role of genes in political attitudes and behaviors by examining the role of genes in political traits over… (more)

▼ This dissertation provides novel insights into the role of genes in political attitudes and behaviors by examining the role of genes in political traits over time and by uncovering two novel sets of potential mediators between genes and politics. Chapter 1 provides an exhaustive review of the biopolitics literature, lays out a theoretical framework for the study of biopolitics, and reviews twin study methodology. Chapters 2 and 3 report results from twin study analyses that rely on an original survey of twins that was conducted in the fall of 2012 in cooperation with the Minnesota Center for Twin and Family Research. Chapter 2 conducts one of the first genetically-informative panel studies of political traits. It finds that genetic factors are the primary contributors to trait stability over a four year period in mid-life, but that only environmental factors contribute to trait change over the same period. Chapter 3 conducts the first ever behavioral genetic analysis of three measures of cognitive style—the need for cognition, the need for cognitive closure, and the need to evaluate. It then shows that the correlations between cognitive style and political traits are driven, in most cases, primarily by genetic factors. This finding suggests that cognitive style variables may mediate the role of genes in politics, a possibility that is left open for future research. Chapter 4 utilizes an original online panel, collected via Amazon Mechanical Turk, to examine whether individual differences in executive functions are related to political traits. The results suggest that updating, a form of executive function, is related to several political traits. Moreover, because individual differences in executive functions are highly heritable, updating may mediate the genetic effect on politics. Chapter 5 summarizes the main contributions of this research, which include evidence of the role of genes in political trait stability in mid-life, the heritability of widely-studied cognitive style measures, and the possibility that cognitive style and executive functions mediate the role of genes in politics. The final chapter also lays out a research agenda for the biopolitics field. In short, this dissertation strongly supports integrating genes into political science theory. Advisors/Committee Members: Alford, John R (advisor), Wilson, Rick K (committee member), Stevenson, Randolph T (committee member), Martin, Randi C (committee member), Krueger, Robert F (committee member).

Subjects/Keywords: Ideology; cognitive style; executive functions; twin study; biopolitics; political psychology

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APA (6^th Edition):

Ksiazkiewicz, A. J. (2015). Genetic Links among Ideology, Cognitive Style, Big Five Personality, and Executive Functions. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95198

Chicago Manual of Style (16^th Edition):

Ksiazkiewicz, Aleksander Jan. “Genetic Links among Ideology, Cognitive Style, Big Five Personality, and Executive Functions.” 2015. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95198.

MLA Handbook (7^th Edition):

Ksiazkiewicz, Aleksander Jan. “Genetic Links among Ideology, Cognitive Style, Big Five Personality, and Executive Functions.” 2015. Web. 25 May 2020.

Vancouver:

Ksiazkiewicz AJ. Genetic Links among Ideology, Cognitive Style, Big Five Personality, and Executive Functions. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95198.

Council of Science Editors:

Ksiazkiewicz AJ. Genetic Links among Ideology, Cognitive Style, Big Five Personality, and Executive Functions. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/95198

Rice University

14. Kubo, Hiroki. Organizing Legislative Parties: How Elections and Policy Positions Shape Intraparty Politics.

Degree: PhD, Social Sciences, 2016, Rice University

URL: http://hdl.handle.net/1911/95199

► In this dissertation project, I examine how elections produce the diverse preferences within political parties and how these differences are managed by party organizations in… (more)

▼ In this dissertation project, I examine how elections produce the diverse preferences within political parties and how these differences are managed by party organizations in legislatures. Existing research on legislative parties suggests that electoral incentives shape legislative behavior and individual politicians delegate their power to parties in order to reconcile the pursuit of individual interests with collective needs. However, especially outside the US Congress, little is known about 1) sources of ideological heterogeneity within parties and 2) the sanction and reward mechanisms used for parties to overcome heterogeneity and achieve collective goals. In order to address these questions, this study investigates how patterns of candidate competition at the electoral district level affect the ideological cohesion of legislative parties and how party leadership allocates posts and resources to legislators. By focusing on contemporary party politics in Japan and the US, I clarify the logic of legislative parties under different circumstances, especially the difference between parliamentary lower houses and other chambers. These two countries have important common features: a two-party system operating entirely or mostly under plurality electoral systems. While an SMD-based electoral system in the lower chamber promotes a two-party system and usually single-party majorities, these parties face the challenge of how they maintain party discipline. These institutional characteristics enable us to engage in within-country comparisons with key features varying. In terms of methodology, I make use of scaling methods on survey data analysis in order to clarify how electoral competition shapes the pattern of intra-party politics and party leadership strategy on post and resource allocation within parties. This study also illuminates the possibilities for survey data analysis approach and cross-national analysis on the causes and the consequences of party ideological cohesion. Advisors/Committee Members: Carroll, Royce (advisor).

Subjects/Keywords: comparative political institutions; political parties; electoral systems; legislative studies; the Asia-Pacific region; Japanese politics; and American politics

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APA (6^th Edition):

Kubo, H. (2016). Organizing Legislative Parties: How Elections and Policy Positions Shape Intraparty Politics. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95199

Chicago Manual of Style (16^th Edition):

Kubo, Hiroki. “Organizing Legislative Parties: How Elections and Policy Positions Shape Intraparty Politics.” 2016. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95199.

MLA Handbook (7^th Edition):

Kubo, Hiroki. “Organizing Legislative Parties: How Elections and Policy Positions Shape Intraparty Politics.” 2016. Web. 25 May 2020.

Vancouver:

Kubo H. Organizing Legislative Parties: How Elections and Policy Positions Shape Intraparty Politics. [Internet] [Doctoral dissertation]. Rice University; 2016. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95199.

Council of Science Editors:

Kubo H. Organizing Legislative Parties: How Elections and Policy Positions Shape Intraparty Politics. [Doctoral Dissertation]. Rice University; 2016. Available from: http://hdl.handle.net/1911/95199

Rice University

15. Tanash, Rima Said. Social Network Censorship: Topics, Techniques, and Impacts.

Degree: PhD, Engineering, 2017, Rice University

URL: http://hdl.handle.net/1911/95200

► Previous research in digital censorship focused by and large on studying censorship of applications and networks that are heavily controlled by oppressive governments such as… (more)

▼ Previous research in digital censorship focused by and large on studying censorship of applications and networks that are heavily controlled by oppressive governments such as China. My research goal is to broaden these studies beyond censorship in autocracies and include western social media, with an explicit focus on Turkish censorship of Twitter, while showing evidence of how aggregating users’ data from pubic APIs can lead to privacy leaks of users’ political affiliations. In this research, we made fundamental contributions in the areas of censorship and privacy. We conducted large scale measurements of Twitter in Turkey, and introduced an approach to systematically label censored Twitter posts while showing that it is possible to find more censored tweets than those published by Twitter. We show a simple way to bypass Twitter censorship inside of the censoring country without using a proxy/VPN, which can be used by ordinary users. Our framework can be applied to any geographical boundaries or targeted users’ groups. We propose a novel set of rules to construct a data flow graph of censored tweets that unmasks influential users and their community association that results in revealing their political and social affiliation. This aggregate analysis of publicly reachable tweets is particularly critical to users’ privacy if unmasked by oppressive governments, or malicious persons who can thereafter leverage these users to spread malicious content. Using standard machine learning and NLP algorithms for topic clustering, we show that the dynamics of censorship in democratic countries, such as Turkey, are different than those in dictatorial regimes that are targeting collective action discussions. Our results show that the censors in Turkey target topics that could negatively impact the outcome of an election and the ruling party’s (AKP) political interest. Expanding this work to examine the impact of the failed Turkish coup 2016 on censorship, we identified a new censored topic that is also deemed adversarial to AKP. The overwhelming majority of the censored tweets pre-coup, from 2014 to 2015, are on government corruption and Kurdish/terrorism issues, with some pro-government censored tweets, because current Turkish law enables individuals to pursue due process against defamatory posts. On the other hand, post-coup results show that in additional to the previously identified censored Kurdish topics, Gülen-movement related topics are also heavily censored, a movement the government claims to be the mastermind behind the coup. More notably, this empirical comparison study reveals evidence of 72% decline in the size of censored tweets and 40% decrease of overall streamed tweets post-coup, which is likely attributed to self-censorship. Active users’ footprint in our data show that 22% of users self-censored their accounts by switching to “protected” mode, and 5% by deleting their accounts attributing to both declines. Unlike activists who regularly post political content and are likely to be censored entirely, we found… Advisors/Committee Members: Wallach, Dan (advisor).

Subjects/Keywords: Social Media Censorship; Social Network Censorship; Twitter Censorship; Turkey Censorship; Topic Clustering; tf-idf NMF; Graph Influential Authoritative Users

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APA (6^th Edition):

Tanash, R. S. (2017). Social Network Censorship: Topics, Techniques, and Impacts. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95200

Chicago Manual of Style (16^th Edition):

Tanash, Rima Said. “Social Network Censorship: Topics, Techniques, and Impacts.” 2017. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95200.

MLA Handbook (7^th Edition):

Tanash, Rima Said. “Social Network Censorship: Topics, Techniques, and Impacts.” 2017. Web. 25 May 2020.

Vancouver:

Tanash RS. Social Network Censorship: Topics, Techniques, and Impacts. [Internet] [Doctoral dissertation]. Rice University; 2017. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95200.

Council of Science Editors:

Tanash RS. Social Network Censorship: Topics, Techniques, and Impacts. [Doctoral Dissertation]. Rice University; 2017. Available from: http://hdl.handle.net/1911/95200

Rice University

16. Macellaro, Kimberly Ann. The Dialectics of Form: Reification and Genre in Early Twentieth-Century American Literature.

Degree: PhD, Humanities, 2016, Rice University

URL: http://hdl.handle.net/1911/95201

► This dissertation foregrounds genre as a politically-charged modality in early twentieth-century American literature, specifically the entangled relations between realism, romance, and naturalism through which the… (more)

▼ This dissertation foregrounds genre as a politically-charged modality in early twentieth-century American literature, specifically the entangled relations between realism, romance, and naturalism through which the shifting formations of race and gender reproduce or challenge transnational capitalism’s reifying processes. My readings of articulations of racialized and gendered subjectivity during two pivotal periods in US history offers a new way of understanding the historical conditions underlying the emergence and circulation of reified identities and addresses many puzzling textual ambiguities as the cultural effects of the reified abstraction of labor. Reification’s relation to labor frames the dissertation’s four chapters, appearing in the opening chapter as unconscious forgetting and in the final chapter as deliberate remembering. In the dissertation’s first part I devote attention to under-theorized representations of white heteronormative masculinity. I situate the emerging configurations of racialized heterosexuality at the interface of consumer culture’s social engineering of subjects of desire. In the dissertation’s second part, I turn to two narrative experiments that more strategically and dialectically manipulate conventions of romance and naturalism to recast reified racial and gendered subjects as they emerge out of histories of transnational capital’s hyper-extraction of value from the colonial body. I draw out the narratives’ romantic utopian aspirations for overcoming racialized divisions between agency and structure, culture and labor. Chapter one on Theodore Dreiser’s Sister Carrie foregrounds memory as a mediatory code for analyzing how reification relates to capitalism’s mechanization of labor and its effects on new white feminine and masculine disembodied consumer subjects. Chapter four on W.E.B. Du Bois’s novel The Quest of the Silver Fleece reads the epic memory of the slave’s labor congealed in the commodity cotton as crucial to the black utopian socialist project of de-reifying the racialized division between labor and culture. Chapter two on the stories of Sui Sin Far and Chapter three on the novel Cogewea by Mourning Dove theorize reification as a process through the splitting and doubling of racialized subjects to manage white anxieties about miscegenation. These chapters examine how texts featuring mixed-race heroines work with and against romance and naturalist conventions to re-narrate histories of colonial capitalism and overcome experiential disconnections imposed upon self and community. Reading form dialectically draws out the intensely cathected constellations of relations as they open up vantages for understanding totality, all be it ones that hover in the margins. Advisors/Committee Members: Hennessy, Rosemary (advisor), Waligora-Davis, Nicole (committee member), Derrick, Scott (committee member), Yarbrough, Fay (committee member).

Subjects/Keywords: American literature; marxist theory; reification; genre; gender and sexuality; critical race studies; early twentieth century

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APA (6^th Edition):

Macellaro, K. A. (2016). The Dialectics of Form: Reification and Genre in Early Twentieth-Century American Literature. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95201

Chicago Manual of Style (16^th Edition):

Macellaro, Kimberly Ann. “The Dialectics of Form: Reification and Genre in Early Twentieth-Century American Literature.” 2016. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95201.

MLA Handbook (7^th Edition):

Macellaro, Kimberly Ann. “The Dialectics of Form: Reification and Genre in Early Twentieth-Century American Literature.” 2016. Web. 25 May 2020.

Vancouver:

Macellaro KA. The Dialectics of Form: Reification and Genre in Early Twentieth-Century American Literature. [Internet] [Doctoral dissertation]. Rice University; 2016. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95201.

Council of Science Editors:

Macellaro KA. The Dialectics of Form: Reification and Genre in Early Twentieth-Century American Literature. [Doctoral Dissertation]. Rice University; 2016. Available from: http://hdl.handle.net/1911/95201

Rice University

17. Zhao, Xin. Approximate dynamic factor models for mixed frequency data.

Degree: PhD, Engineering, 2015, Rice University

URL: http://hdl.handle.net/1911/95202

► Time series observed at different temporal scales cannot be simultaneously analyzed by traditional multivariate time series methods. Adjustments must be made to address issues of… (more)

Subjects/Keywords: mixed frequency data; penalized likelihood methodologies

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APA (6^th Edition):

Zhao, X. (2015). Approximate dynamic factor models for mixed frequency data. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95202

Chicago Manual of Style (16^th Edition):

Zhao, Xin. “Approximate dynamic factor models for mixed frequency data.” 2015. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95202.

MLA Handbook (7^th Edition):

Zhao, Xin. “Approximate dynamic factor models for mixed frequency data.” 2015. Web. 25 May 2020.

Vancouver:

Zhao X. Approximate dynamic factor models for mixed frequency data. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95202.

Council of Science Editors:

Zhao X. Approximate dynamic factor models for mixed frequency data. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/95202

Rice University

18. Chen, Peiyu. High-resolution Millimeter-wave Impulse-based MIMO 3D Imaging Radar in Silicon.

Degree: MS, Engineering, 2015, Rice University

URL: http://hdl.handle.net/1911/95203

► The research on millimeter-wave (mm-wave) silicon-based integrated 3D imaging radar has gained tremendous attention in academia over the past decade. Compared with conventional 2D imaging,… (more)

▼ The research on millimeter-wave (mm-wave) silicon-based integrated 3D imaging radar has gained tremendous attention in academia over the past decade. Compared with conventional 2D imaging, 3D imaging captures both 1D depth information and 2D intensity maps. Impulse-based 3D imaging radar can also obtains more constitutional information of objects, like spectroscopy, so as to potentially have material identification functionality with 3D imaging simultaneously. The main objectives in the roadmapping of silicon integrated 3D imaging radar are higher image resolution, a larger image range and shorter acquisition time. With the dramatically improved performance of silicon transistors, mm-wave circuits using CMOS and BiCMOS technologies can generate picosecond-level impulses but with small RF power. Shorter impulses provide higher image resolution, but small RF power limits image range. Spatially coherent impulse combining from multiple silicon circuits is the solution to this problem. Compared with narrow-band phased-arrays that perform only 2D spatial filtering and have range-ambiguity problems, impulse-radiating arrays are capable of performing 3D spatial filtering that enhances the imaging sensitivity of a certain point in 3D space without sacrificing image resolution. Therefore, impulse-based MIMO imaging radar can achieve both high resolution and a large image range simultaneously. In this present work, a 60ps impulse radiator with an on-chip antenna is implemented in the IBM 130nm SiGe BiCMOS process technology. The impulse radiator is the core element of the synthetic arrays that are used to perform 3D imaging in this thesis. A pulsed-VCO-based architecture is designed based on an asymmetric cross-coupled pulsed VCO to convert a digital input signal to radiated impulses. The deliberate asymmetry in the pulsed VCO is introduced to minimize the timing jitter of the radiated impulses in order to achieve spatially coherent impulse combining with high efficiency. The radiated impulses have a record RMS jitter of 178fs with 64 averaging when the input trigger signal has a RMS jitter of 150fs. Two widely spaced impulse radiators are used to perform spatially coherent impulse combining with an efficiency of 98.7%. As the first step in demonstrating impulse-based MIMO 3D imaging radar, in this work, custom synthetic array imaging systems were built based on the proposed silicon-based integrated impulse radiator. 3D imaging of metallic and dielectric objects (rocks immersed in oil) have been performed successfully. A depth accuracy of 27um, a depth resolution of 9mm and a lateral resolution of 8mm at 10cm distance in the air have been achieved. To the author’s knowledge, this work demonstrates the first high-resolution 3D images that are generated by using synthetic array imaging systems based on a fully-integrated impulse radiator in silicon. Future work includes implementing fully integrated impulse transceivers and fully integrated impulse-based MIMO 3D imaging radar with independent time-delay controls. Advisors/Committee Members: Babakhani, Aydin (advisor), Aazhang, Behnaam (committee member), Knightly, Edward W (committee member), Kono, Junichiro (committee member).

Subjects/Keywords: 3D imaging; BiCMOS; Impulse radiator

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APA (6^th Edition):

Chen, P. (2015). High-resolution Millimeter-wave Impulse-based MIMO 3D Imaging Radar in Silicon. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/95203

Chicago Manual of Style (16^th Edition):

Chen, Peiyu. “High-resolution Millimeter-wave Impulse-based MIMO 3D Imaging Radar in Silicon.” 2015. Masters Thesis, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95203.

MLA Handbook (7^th Edition):

Chen, Peiyu. “High-resolution Millimeter-wave Impulse-based MIMO 3D Imaging Radar in Silicon.” 2015. Web. 25 May 2020.

Vancouver:

Chen P. High-resolution Millimeter-wave Impulse-based MIMO 3D Imaging Radar in Silicon. [Internet] [Masters thesis]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95203.

Council of Science Editors:

Chen P. High-resolution Millimeter-wave Impulse-based MIMO 3D Imaging Radar in Silicon. [Masters Thesis]. Rice University; 2015. Available from: http://hdl.handle.net/1911/95203

Rice University

19. Howie, Nicole. The Effect of Response Modality on Task Performance When Using an Interactive Voice Response System for Older and Younger Adults.

Degree: PhD, Social Sciences, 2013, Rice University

URL: http://hdl.handle.net/1911/95211

► The purpose of this experiment was to gain a greater understanding of how set- level compatibility affects task performance of older adults while using an… (more)

Subjects/Keywords: Aging; Set-level compatibility; response-modality; Interactive Response System

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APA (6^th Edition):

Howie, N. (2013). The Effect of Response Modality on Task Performance When Using an Interactive Voice Response System for Older and Younger Adults. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95211

Chicago Manual of Style (16^th Edition):

Howie, Nicole. “The Effect of Response Modality on Task Performance When Using an Interactive Voice Response System for Older and Younger Adults.” 2013. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95211.

MLA Handbook (7^th Edition):

Howie, Nicole. “The Effect of Response Modality on Task Performance When Using an Interactive Voice Response System for Older and Younger Adults.” 2013. Web. 25 May 2020.

Vancouver:

Howie N. The Effect of Response Modality on Task Performance When Using an Interactive Voice Response System for Older and Younger Adults. [Internet] [Doctoral dissertation]. Rice University; 2013. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95211.

Council of Science Editors:

Howie N. The Effect of Response Modality on Task Performance When Using an Interactive Voice Response System for Older and Younger Adults. [Doctoral Dissertation]. Rice University; 2013. Available from: http://hdl.handle.net/1911/95211

Rice University

20. Khatiwada, Suman. Hypervelocity impact studies of carbon nanotubes and fiber-reinforced polymer nanocomposites.

Degree: PhD, Engineering, 2014, Rice University

URL: http://hdl.handle.net/1911/95212

► ABSTRACT Hypervelocity impact studies of carbon nanotubes and fiber-reinforced polymer nanocomposites by Suman Khatiwada This dissertation studies the hypervelocity impact characteristics of carbon nanotubes (CNTs),… (more)

▼ ABSTRACT Hypervelocity impact studies of carbon nanotubes and fiber-reinforced polymer nanocomposites by Suman Khatiwada This dissertation studies the hypervelocity impact characteristics of carbon nanotubes (CNTs), and investigates the use of CNTs as reinforcements in ultra-high molecular weight polyethylene (UHMWPE) fiber composites for hypervelocity impact shielding applications. The first part of this dissertation is aimed at developing an understanding of the hypervelocity impact response of CNTs – at the nanotube level. Impact experiments are designed with CNTs as projectiles to impact and crater aluminum plates. The results show that carbon nanotubes are resistant to the high-energy shock pressures and the ultra-high strain loading during hypervelocity impacts. Under our experimental conditions, single-walled carbon nanotubes survive impacts up to 4.07 km/s, but transform to graphitic ribbons and nanodiamonds at higher impact velocities. The nanodiamonds are metastable and transform to onion-like nanocarbon over time. Double-walled carbon nanotubes retain their form and structure even at impacts over 7 km/s. Higher hypervelocity impact resistance of DWCNTs could be attributed to the absorption of additional energy due to relative motion between the layers in the transverse direction of these coaxial nanotubes. The second part of this dissertation researches the effect of reinforcement of carbon nanotubes and their buckypapers on the hypervelocity impact shielding properties of UHMWPE-fiber composites arranged in a Whipple Shield configuration (a shield design used for the protection of the international space station from hypervelocity impacts by orbital debris). Composite laminates were prepared via compression molding and nanotube buckypapers via vacuum filtration. Dispersed nanotubes were introduced to the composite laminates via direct spraying onto the fabric prior to composite processing. The experimental results show that nanotubes dispersed in polymer matrix do not affect the hypervelocity impact resistance of the composite system. Nanotube buckypapers, however, improve the impact resistance of the composite, owing to the collective dampening of the shock wave amplitudes by the interconnected nanotube network in a buckypaper. The location of the buckypaper inside the composite, its thickness, and its surface modification with metals, all affect its hypervelocity impact shielding properties. Buckypaper coated with nickel and placed on the top surface of the UHMWPE-fiber composite provides the best impact resistance. Physical properties such as high bulk speed of sound in the nanotubes, and a combination of high density and high bulk speed of sound in nickel make the nickel-coated buckypaper a good hypervelocity impact shielding material. In addition, an explorative study on the use of nanograin metals for hypervelocity impact shielding was conducted. Advisors/Committee Members: Barrera, Enrique V (advisor), Ajayan, Pulickel M (committee member), Padgett, Jamie E (committee member).

Subjects/Keywords: buckypaper; UHMWPE-fiber composites; nanocomposites; Hypervelocity impact; carbon nanotubes; single-walled nanotubes; double-walled nanotubes

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APA (6^th Edition):

Khatiwada, S. (2014). Hypervelocity impact studies of carbon nanotubes and fiber-reinforced polymer nanocomposites. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95212

Chicago Manual of Style (16^th Edition):

Khatiwada, Suman. “Hypervelocity impact studies of carbon nanotubes and fiber-reinforced polymer nanocomposites.” 2014. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95212.

MLA Handbook (7^th Edition):

Khatiwada, Suman. “Hypervelocity impact studies of carbon nanotubes and fiber-reinforced polymer nanocomposites.” 2014. Web. 25 May 2020.

Vancouver:

Khatiwada S. Hypervelocity impact studies of carbon nanotubes and fiber-reinforced polymer nanocomposites. [Internet] [Doctoral dissertation]. Rice University; 2014. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95212.

Council of Science Editors:

Khatiwada S. Hypervelocity impact studies of carbon nanotubes and fiber-reinforced polymer nanocomposites. [Doctoral Dissertation]. Rice University; 2014. Available from: http://hdl.handle.net/1911/95212

Rice University

21. Narayan, Manjari. Inferential Methods to Find Differences in Population of Graphical Models with Applications to Functional Connectomics.

Degree: PhD, Engineering, 2016, Rice University

URL: http://hdl.handle.net/1911/95213

► In many neuroimaging modalities, scientists observe neural activity at distinct units of brain function but seek to study and manipulate functional connectivity or unobserved latent… (more)

▼ In many neuroimaging modalities, scientists observe neural activity at distinct units of brain function but seek to study and manipulate functional connectivity or unobserved latent relationships between these units. Functional connectivity is commonly described using networks where nodes correspond to brain locations or regions, electrodes, circuits or neurons while edges correspond to some notion of statistical dependence. Such net- work models are increasingly used in clinical neuroimaging where scientists seek to find robust network biomarkers to detect specific brain based disorders, explain underlying disease mechanisms and guide personalized treatment regimes. However, functional con- nectivity networks are never observed but estimated from complex and noisy data, and as a result, estimated networks are prone to statistical errors. This dissertation shows that failure to account for such statistical errors compromises subsequent inferential analyses to find differences in functional connectivity and proposes a new statistical framework that ameliorates these problems, thus improving the reproducibility of functional connectivity studies. Formally, this dissertation identifies a new statistical problem, Population Post-Selection Inference or popPSI, that arises in functional neuroimaging when scientists ask inferential questions such as — How do network metrics differ between a population of unhealthy subjects and healthy controls How do individual networks vary with symptom severity To investigate popPSI issues in such questions, we use two level models to study network differences, specifically employing Gaussian graphical models (GGMs) for functional connectivity. Whereas standard test statistics do not adequately control type I and type II errors for such models, R³, our novel methodological approach, based on resampling, random penalization with random effects test statistics addresses the deficiencies of current test statistics employed in neuroimaging. Our framework is general and can be used to test general linear hypotheses of the network at the edge, node or global level. Using extensive simulation studies for a wide variety of sample sizes and network structures, we show that R3 offers improvements in statistical power and error for various network met- rics. Real data case studies reveal that our methods find meaningful and clinically relevant network differences in synesthesia, neurofibromatosis-1 and autism spectrum disorders. Advisors/Committee Members: Baraniuk, Richard G. (advisor), Allen, Genevera I. (committee member).

Subjects/Keywords: graphical models; markov networks; edge testing; covariate testing; two-level models; functional connectivity; neuroimaging; fMRI; connectomics; mixed effects; random effects; linear mixed effects models; resampling

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APA (6^th Edition):

Narayan, M. (2016). Inferential Methods to Find Differences in Population of Graphical Models with Applications to Functional Connectomics. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95213

Chicago Manual of Style (16^th Edition):

Narayan, Manjari. “Inferential Methods to Find Differences in Population of Graphical Models with Applications to Functional Connectomics.” 2016. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95213.

MLA Handbook (7^th Edition):

Narayan, Manjari. “Inferential Methods to Find Differences in Population of Graphical Models with Applications to Functional Connectomics.” 2016. Web. 25 May 2020.

Vancouver:

Narayan M. Inferential Methods to Find Differences in Population of Graphical Models with Applications to Functional Connectomics. [Internet] [Doctoral dissertation]. Rice University; 2016. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95213.

Council of Science Editors:

Narayan M. Inferential Methods to Find Differences in Population of Graphical Models with Applications to Functional Connectomics. [Doctoral Dissertation]. Rice University; 2016. Available from: http://hdl.handle.net/1911/95213

Rice University

22. King, Nicholas Sun. Plasmonic Nanostructures for Enhanced Solar Cells and Colorimetric Spectroscopy Techniques.

Degree: PhD, Natural Sciences, 2015, Rice University

URL: http://hdl.handle.net/1911/95214

► Nanostructures that support plasmon resonances, the collective oscillations of conduction electrons in metallic systems, are a driving force in nanophotonic technologies. The ability to manipulate… (more)

▼ Nanostructures that support plasmon resonances, the collective oscillations of conduction electrons in metallic systems, are a driving force in nanophotonic technologies. The ability to manipulate and confine electromagnetic fields below the diffraction limit of light has resulted in an explosion of nanoscale optical devices, ranging from single molecule chemical sensors to solid state optoelectronic spectrometers. The orientation, geometry, size, dielectric materials and environment determine the wavelength dependent scattering and absorption of a plasmon resonance. Efficiently designing a nanostructure for a specific application relies entirely upon understanding the effect of each of these aspects on the overall optical response of the system. This thesis presents two different plasmonic nanostructures for enhancing two popular technologies: thin film solar cells and optical dielectric/environmental sensors. In the first half of this thesis, I use an asymmetric three-dimensional nanocup antenna to demonstrate the importance of dipole orientation for directional scattering applications. The nanocup (a gold semi-shell supported by a dielectric core particle) can redirect normal incidence near infrared light into a waveguide mode of a planar device. Tilting the orientation of a nanoantenna, and consequently the dipole moment of the plasmon mode, out of the plane of the substrate greatly increases the coupling efficacy. This process can directly improve the photon capture efficiency of planar thin film solar cells, which are weak absorbers in this wavelength regime. Both the electric and magnetic plasmon responses of the gold nanocup are shown to redirect light into the substrate and the relative contributions are quantified using a simple dipole model. The second half of this thesis focuses on aluminum nanocluster geometries for optical sensing applications. Aluminum is an increasingly popular plasmonic material that complements the properties of gold and silver, which are well established plasmonic metals. The material properties of aluminum provide a greater resistance to oxidation than silver; the tunable range of aluminum continuously spans ultraviolet and visible wavelengths whereas gold is limited by interband transitions. The sensitivity of aluminum plasmon resonances at visible wavelengths can be exploited to create highly responsive optical sensors based upon the chromaticity (hue and saturation) of the scattered light. I present Fano resonant nanoclusters capable of producing any chromaticity throughout the visible regime. Modifying the geometric scale and Dn group symmetry of the nanocluster changes the interaction of the superradiant and subradiant plasmon modes defining the scattering chromaticity. Localized surface plasmon resonance (LSPR) shifts induced by changes to the dielectric environment cause the chromaticity of the Fano lineshape to drastically change. This change can be differentiated by the naked eye or basic RGB capable cameras, providing a simple, low-cost means of monitoring the changes… Advisors/Committee Members: Halas, Naomi J (advisor), Nordlander, Peter (committee member), Link, Stephan (committee member).

Subjects/Keywords: Plasmonics; Solar Cells; Chromaticity; Nanotechnology

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APA (6^th Edition):

King, N. S. (2015). Plasmonic Nanostructures for Enhanced Solar Cells and Colorimetric Spectroscopy Techniques. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95214

Chicago Manual of Style (16^th Edition):

King, Nicholas Sun. “Plasmonic Nanostructures for Enhanced Solar Cells and Colorimetric Spectroscopy Techniques.” 2015. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95214.

MLA Handbook (7^th Edition):

King, Nicholas Sun. “Plasmonic Nanostructures for Enhanced Solar Cells and Colorimetric Spectroscopy Techniques.” 2015. Web. 25 May 2020.

Vancouver:

King NS. Plasmonic Nanostructures for Enhanced Solar Cells and Colorimetric Spectroscopy Techniques. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95214.

Council of Science Editors:

King NS. Plasmonic Nanostructures for Enhanced Solar Cells and Colorimetric Spectroscopy Techniques. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/95214

Rice University

23. Yue, Jiaxing. Comparative Genomics of Cephalochordates.

Degree: PhD, Natural Sciences, 2015, Rice University

URL: http://hdl.handle.net/1911/95215

► Cephalochordates, commonly known as lancelets or amphioxus, represent an ancient chordate lineage falling at the boundary between invertebrates and vertebrates. They are considered the best… (more)

Subjects/Keywords: Cephalochordates; amphioxus; genomics; evolution

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APA (6^th Edition):

Yue, J. (2015). Comparative Genomics of Cephalochordates. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95215

Chicago Manual of Style (16^th Edition):

Yue, Jiaxing. “Comparative Genomics of Cephalochordates.” 2015. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95215.

MLA Handbook (7^th Edition):

Yue, Jiaxing. “Comparative Genomics of Cephalochordates.” 2015. Web. 25 May 2020.

Vancouver:

Yue J. Comparative Genomics of Cephalochordates. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95215.

Council of Science Editors:

Yue J. Comparative Genomics of Cephalochordates. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/95215

Rice University

24. Habibi, Golnaz. Collective Transport of an Unknown Object by Multi Robots with Limited Sensing.

Degree: PhD, Engineering, 2015, Rice University

URL: http://hdl.handle.net/1911/95216

► This thesis presents a fully distributed approach to retrieve a large object from an unknown environment. The object is assumed to be located in an… (more)

▼ This thesis presents a fully distributed approach to retrieve a large object from an unknown environment. The object is assumed to be located in an environment without GPS or Internet infrastructure. The object is too heavy to transport by one robot. The collective transport problem is broken into five major steps: 1) Exploring the unknown environment and finding the object. 2) Grasping the object. 3) Characterizing the object. 4) Planning a path to the desired location. 5) Transporting the object to the desired location. This thesis presents efficient distributed algorithms for robots with limited sensing to accomplish steps three to five. Object characterization includes centroid estimation and object dimension estimation. Two algorithms are developed for centroid estimation. In the first algorithm, each robot uses a communication tree to compute the sum of its children's positions. The second algorithm is based on pipelined consensus, which is an extension of pairwise gossip-based consensus. Two algorithms are presented to estimate object's dimensions. The first one is a distributed principal component analysis algorithm, and the second one is the distributed version of rotating calipers algorithm. A distributed path planning algorithm is presented. Robots have already been scattered across the terrain and collectively sample the obstacles in the environment. Robots use this sampling along with the estimated dimensions of the object, from above, to construct a configuration space of robots and the object. A variant of the distributed Bellman-Ford algorithm is then used to construct a shortest-path tree. A path navigation algorithm is presented to map each path segments to a distributed motion controller that can command the robots to transport the object. Four distributed motion controllers are designed including: rotation around a pivot robot, rotation in-place around an estimated centroid of the object, translation, and a combined motion of rotation and translation. Finally, a distributed recovery algorithm is presented to recover the robots efficiently and safely after collective transport. This recovery method uses k-redundant maximum-leaf spanning trees that guarantee connectivity during the recovery. All algorithms are verified through simulation as well as hardware experiments. The results are promising, and the algorithms successfully transport convex or concave objects in simulation and hardware experiments. After robots transport the object, robots are successfully recovered at home location by using the recovery algorithm. All algorithms discussed in this thesis are fully distributed, efficient, and robust to object shape and network population changes. Advisors/Committee Members: McLurkin, James (advisor), Kavraki, Lydia (committee member), O'Malley, Marcia (committee member), Schwager, Mac (committee member).

Subjects/Keywords: Distributed; Multi-robot system; transport, Path Planning; Centroid Estimation; Object Characterization; Consensus

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APA (6^th Edition):

Habibi, G. (2015). Collective Transport of an Unknown Object by Multi Robots with Limited Sensing. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95216

Chicago Manual of Style (16^th Edition):

Habibi, Golnaz. “Collective Transport of an Unknown Object by Multi Robots with Limited Sensing.” 2015. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95216.

MLA Handbook (7^th Edition):

Habibi, Golnaz. “Collective Transport of an Unknown Object by Multi Robots with Limited Sensing.” 2015. Web. 25 May 2020.

Vancouver:

Habibi G. Collective Transport of an Unknown Object by Multi Robots with Limited Sensing. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95216.

Council of Science Editors:

Habibi G. Collective Transport of an Unknown Object by Multi Robots with Limited Sensing. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/95216

Rice University

25. Ozden, Sehmus. Advanced Three-Dimensional Structural Carbon Nanomaterials.

Degree: PhD, Engineering, 2016, Rice University

URL: http://hdl.handle.net/1911/95520

► Carbon nanomaterials, such as carbon nanotubes (CNTs) and graphene, are most intensively investigated carbon allotropes because of their outstanding physical and chemical properties. Recently, it… (more)

▼ Carbon nanomaterials, such as carbon nanotubes (CNTs) and graphene, are most intensively investigated carbon allotropes because of their outstanding physical and chemical properties. Recently, it has been realized that threedimensional (3D) carbon-based structures with nanoscale interconnection provide the remarkably improved properties required for critically needed applications. The properties of 3D-CNTs and graphene architectures can be tweaked for various applications. Therefore, 3D carbon-based solids with nanoscale intermolecular junctions present an exciting research area and provide opportunities for fabrication of various 3D-macroscopic architectures with unexpected properties. The creation of nanoengineered 3D-macroscopic structures in a scalable synthetic process still remains a challenge. The fundamental problem is the difficulty in introducing atomic-scale junctions between individual nanoscale structures so that they can be organized as covalently interconnected nanostructured networks with controllable physical characteristics, such as density and porosity. Here, 3D structures have been created using chemical vapor deposition method, solutionbased chemistry technique and welding method via hypervelocity impact method to generate atomic-scale junction between carbon nanostructures. The scalable fabrication of 3D macroscopic scaffolds with different hierarchical interconnected structures and soldering-like junctions between CNTs using chemical vapor deposition (CVD) technique is reported. These intermolecular junctions of CNTs result in a high thermal stability, high electrical conductivity, excellent mechanical properties, as well as excellent structural stability in a concentrated acid, base, and organic solvents. The CNT solids with such tremendous properties represent the next generation of carbon-based materials with a broad range of potential applications; we demonstrate here a couple such utility impact damping, removal oil from contaminated water and as a marker for the oil industry. Additionally, in situ nano-indentation inside a scanning electron microscopy (SEM) were used to determine the mechanical response of individual covalent junction, formed in different configurations such as “X”, “Y” and “” shapes between individual CNTs. Fully atomistic reactive molecular dynamics simulations are used to support the experimental results as well as to study the deformation behavior of junctions. Vertically aligned multiwall carbon nanotube forests (NTF) synthesized by water assisted CVD method and both sides functionalized with different functionalities as hydrophobic and hydrophilic. The produced hygroscopic nanotube forest demonstrate for water harvesting from air. The second approach has been used in this work is solution chemistry to generate crosslinking nanotube structures. The scalable synthesis of 3D macroscopic solids made of covalently connected nanotubes via Suzuki cross-coupling reaction, a well-known carbon-carbon covalent bond forming reaction in organic chemistry. The resulting CNTs… Advisors/Committee Members: Ajayan, Pulickel M. (advisor).

Subjects/Keywords: Nanotubes; Carbon; Three-Dimensional; Mechanical properties; Water harvesting; Functionalization; Unzipping; High impact; Unzipping Mechanism; Stiffness; Intermolecular junctions; 3D CNT solids; Carbon nanotube junction; picoindentation; in situ testing; atomistic modeling; oil-water separation; chemical cross-linking; Suzuki reaction

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APA (6^th Edition):

Ozden, S. (2016). Advanced Three-Dimensional Structural Carbon Nanomaterials. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95520

Chicago Manual of Style (16^th Edition):

Ozden, Sehmus. “Advanced Three-Dimensional Structural Carbon Nanomaterials.” 2016. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95520.

MLA Handbook (7^th Edition):

Ozden, Sehmus. “Advanced Three-Dimensional Structural Carbon Nanomaterials.” 2016. Web. 25 May 2020.

Vancouver:

Ozden S. Advanced Three-Dimensional Structural Carbon Nanomaterials. [Internet] [Doctoral dissertation]. Rice University; 2016. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95520.

Council of Science Editors:

Ozden S. Advanced Three-Dimensional Structural Carbon Nanomaterials. [Doctoral Dissertation]. Rice University; 2016. Available from: http://hdl.handle.net/1911/95520

Rice University

26. Xu, Xiaoran. Efficient Characterization of Processor Memory Hierarchies.

Degree: MS, Computer Science, 2017, Rice University

URL: http://hdl.handle.net/1911/95522

► A processor’s memory hierarchy has a major impact on the performance of running code. As memory hierarchies have become deeper and more complex, it has… (more)

Subjects/Keywords: Efficient Characterization; Automatic Analysis; Memory Hierarchies; Cache and TLB Test

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APA (6^th Edition):

Xu, X. (2017). Efficient Characterization of Processor Memory Hierarchies. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/95522

Chicago Manual of Style (16^th Edition):

Xu, Xiaoran. “Efficient Characterization of Processor Memory Hierarchies.” 2017. Masters Thesis, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95522.

MLA Handbook (7^th Edition):

Xu, Xiaoran. “Efficient Characterization of Processor Memory Hierarchies.” 2017. Web. 25 May 2020.

Vancouver:

Xu X. Efficient Characterization of Processor Memory Hierarchies. [Internet] [Masters thesis]. Rice University; 2017. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95522.

Council of Science Editors:

Xu X. Efficient Characterization of Processor Memory Hierarchies. [Masters Thesis]. Rice University; 2017. Available from: http://hdl.handle.net/1911/95522

Rice University

27. Hogan, Nathaniel J. Multiparticle Optical and Thermal Effects in Illuminated Solutions of Plasmonic Nanoparticles.

Degree: MS, Applied Physics/Physics, 2014, Rice University

URL: http://hdl.handle.net/1911/95523

► Plasmonic nanoparticles are found in a number of applications as efficient converters of optical energy into heat, e.g. cancer therapy of nanoparticle-laden tumors. More recently,… (more)

Subjects/Keywords: solar steam; plasmon; multiple light scattering

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APA (6^th Edition):

Hogan, N. J. (2014). Multiparticle Optical and Thermal Effects in Illuminated Solutions of Plasmonic Nanoparticles. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/95523

Chicago Manual of Style (16^th Edition):

Hogan, Nathaniel J. “Multiparticle Optical and Thermal Effects in Illuminated Solutions of Plasmonic Nanoparticles.” 2014. Masters Thesis, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95523.

MLA Handbook (7^th Edition):

Hogan, Nathaniel J. “Multiparticle Optical and Thermal Effects in Illuminated Solutions of Plasmonic Nanoparticles.” 2014. Web. 25 May 2020.

Vancouver:

Hogan NJ. Multiparticle Optical and Thermal Effects in Illuminated Solutions of Plasmonic Nanoparticles. [Internet] [Masters thesis]. Rice University; 2014. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95523.

Council of Science Editors:

Hogan NJ. Multiparticle Optical and Thermal Effects in Illuminated Solutions of Plasmonic Nanoparticles. [Masters Thesis]. Rice University; 2014. Available from: http://hdl.handle.net/1911/95523

Rice University

28. Castillo-Rivera, Dorianne A. A Journey through the Arabidopsis thaliana Genome: Discovering the Origins of Novel Triterpene Metabolites.

Degree: PhD, Natural Sciences, 2014, Rice University

URL: http://hdl.handle.net/1911/95524

► Plants produce a large variety of natural products, including over 20,000 different triterpenoids. Triterpenoid functions range from roles as membrane sterols and hormones in primary… (more)

▼ Plants produce a large variety of natural products, including over 20,000 different triterpenoids. Triterpenoid functions range from roles as membrane sterols and hormones in primary metabolism, to defense compounds in secondary metabolism. Beyond these roles in the plant, triterpenoids have substantial human value as flavors, fragrances, and medicines. This thesis explores the enzymatic formation of triterpenoids through cationic cyclization of a linear precursor oxidosqualene and further metabolism by radical oxidation. Thirteen different oxidosqualene cyclases (OSCs) are encoded by the model plant Arabidopsis thaliana and collectively produce a plethora of triterpene skeletons. This structural diversity of triterpenes was investigated through a comprehensive analysis of the A. thaliana PEN6 product profile. This product profile contained 33 compounds that were found by combining genome mining, heterologous expression in yeast and HSQC analysis. Some of these compounds were novel to Arabidopsis: isoursenol, (13R,14Z,17E)-malabarica-14,17,21-trien-3β-ol, nematocyphol, (20R,S) dammarenediols, Δ8(26)-seco-β-amyrin, and 9αH-Δ8(26)-polypodatetraenol. After the cyclization, triterpenes can be modified by a number of enzymes, including cytochrome P450 monooxygenases (CYP450s). Candidate CYP450s for a given triterpene were identified by gene cluster analysis combined with microarray databases. Heterologous expression of the OSC, ATR2 and CYP450 together with GC-MS and NMR techniques allowed the elucidation of metabolic pathways and structures of a variety of oxygenated triterpenes. These experimental techniques led to the identification of new oxidized metabolites produced by the co-expression of Arabidopsis clusters: THAS1 with CYP708A2 and CYP705A5, PEN1 with CYP705A2 and MRN1 with CYP71A16. The thalianol cluster gave rise to several unexpected side chain and ring oxidized metabolites. This thesis also describes the side chain cleavage of arabidiol by CYP705A1 to give a C19 methyl ketone, and the hydroxylation of an allylic methyl of marneral/marnerol to 23-hydroxymarneral/23-hydroxymarnerol by CYP71A16. This work sheds light on the metabolic fate of some Arabidopsis triterpenes. When applied more generally, this strategy may begin to fill a large knowledge gap in metabolomics and functional genomics. Advisors/Committee Members: Matsuda, Seiichi P. T. (advisor), Hartgerink, Jeffrey D. (committee member), Tapia, Richard A. (committee member).

Subjects/Keywords: triterpene; triterpenoids; CYP; cytochrome P450; arabidopsis thaliana; metabolism; genome mining; OSC

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APA (6^th Edition):

Castillo-Rivera, D. A. (2014). A Journey through the Arabidopsis thaliana Genome: Discovering the Origins of Novel Triterpene Metabolites. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95524

Chicago Manual of Style (16^th Edition):

Castillo-Rivera, Dorianne A. “A Journey through the Arabidopsis thaliana Genome: Discovering the Origins of Novel Triterpene Metabolites.” 2014. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95524.

MLA Handbook (7^th Edition):

Castillo-Rivera, Dorianne A. “A Journey through the Arabidopsis thaliana Genome: Discovering the Origins of Novel Triterpene Metabolites.” 2014. Web. 25 May 2020.

Vancouver:

Castillo-Rivera DA. A Journey through the Arabidopsis thaliana Genome: Discovering the Origins of Novel Triterpene Metabolites. [Internet] [Doctoral dissertation]. Rice University; 2014. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95524.

Council of Science Editors:

Castillo-Rivera DA. A Journey through the Arabidopsis thaliana Genome: Discovering the Origins of Novel Triterpene Metabolites. [Doctoral Dissertation]. Rice University; 2014. Available from: http://hdl.handle.net/1911/95524

Rice University

29. Sagi, Aparna Raju. Surfactant Enhanced Oil Recovery.

Degree: PhD, Engineering, 2015, Rice University

URL: http://hdl.handle.net/1911/95525

► The application of surfactants in Enhanced Oil Recovery (EOR) is the central theme of this thesis. The use of different EOR methods, thermal, gas flooding,… (more)

▼ The application of surfactants in Enhanced Oil Recovery (EOR) is the central theme of this thesis. The use of different EOR methods, thermal, gas flooding, surfactant flooding, etc. to improve the recovery of oil has become more relevant in recent years with the world’s demand for energy increasing, decreasing oil production from mature fields, and a lower than required rate of addition of new fields to make up for these two trends. Surfactants can be employed in EOR processes in three main ways: (1) to lower the Interfacial tension (IFT) between oil and brine to ultra-low values (lesser than 10-3 mN/m) which will reduce the capillary forces that trap the oil in the pores, and enable the oil to be produced by viscous of gravitational force, (2) by altering the wettability of the reservoir rock from being oil-wet to water-wet thereby resulting in the spontaneous imbibition of brine into the pores and the displacement of oil out of the pores, (3) as foam as to improve the reservoir sweep efficiency of other oil recovery methods like gas floods, surfactant floods, steam floods, etc. This thesis discusses the application of surfactants for a low IFT EOR process tailored to a low temperature (25 °C - 30 °C), low salinity (~11,000 ppm total dissolved solids (TDS) carbonate reservoir, and as a foam based mobility control agent for a miscible enriched hydrocarbon gas flood in a sandstone reservoir at high temperature (68 °C) and moderate salinity (~24,000 ppm TDS). Alcohol Propoxy (PO) Sulfates (APSs) and their blends with Internal Olefin Sulfonates (IOSs) were assessed by surfactant-brine-oil phase behavior studies to identify which of them formed stable aqueous solutions, and were capable of reducing IFT at the given conditions of temperature, salinity and crude oil. The selected surfactant was also evaluated in terms of viscosity of phases, to ensure that no high viscosity phases were formed, and in terms of adsorption on reservoir rock, which needs to be low for the process to be economical. Due to ease of handling initial phase behavior evaluation in this study and in a majority of such studies by others is done with dead crude oil (oil devoid of the light components which come out of the oil when depressurized to atmospheric pressure). But is known that surfactant phase behavior is highly dependent of the composition of the oil. To this end, experiments with live oil were carried out to determine the effect of different gases, methane, ethane, carbon dioxide, and separator gas, on surfactant phase behavior. Some surfactants that were evaluated exhibited non-classical phase behavior, i.e., they did not exhibit the classical Winsor phase transition of Type IType IIIType II, which is accompanied by an increasing oil solubilization parameter (σo) and decreasing water solubilization parameter (σw). These systems did not form a Type III system, and instead showed a Type IType II transition. Moreover, the σo (high σ is an indicator of low IFT) appeared to reach a peak and then decrease in the Type I region. The reasons… Advisors/Committee Members: Hirasaki, George J. (advisor), Miller, Clarence A. (advisor), Biswal, Sibani L (committee member), Li, Qilin (committee member).

Subjects/Keywords: Surfactant; Ehanced Oil Recovery; Phase behavior; Foam; Live oil; partitioning

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APA (6^th Edition):

Sagi, A. R. (2015). Surfactant Enhanced Oil Recovery. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95525

Chicago Manual of Style (16^th Edition):

Sagi, Aparna Raju. “Surfactant Enhanced Oil Recovery.” 2015. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95525.

MLA Handbook (7^th Edition):

Sagi, Aparna Raju. “Surfactant Enhanced Oil Recovery.” 2015. Web. 25 May 2020.

Vancouver:

Sagi AR. Surfactant Enhanced Oil Recovery. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95525.

Council of Science Editors:

Sagi AR. Surfactant Enhanced Oil Recovery. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/95525

Rice University

30. Sambasivan, Ramya. Rh(II) metallopeptides for asymmetric catalysis.

Degree: PhD, Natural Sciences, 2015, Rice University

URL: http://hdl.handle.net/1911/95526

► The development of peptides as chiral ligands for asymmetric Rh(II) catalysis is discussed in this work. Mother Nature’s solution to chiral ligand design is to… (more)

Subjects/Keywords: metallopeptide; asymmetric catalysis; rhodium catalyst

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APA (6^th Edition):

Sambasivan, R. (2015). Rh(II) metallopeptides for asymmetric catalysis. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/95526

Chicago Manual of Style (16^th Edition):

Sambasivan, Ramya. “Rh(II) metallopeptides for asymmetric catalysis.” 2015. Doctoral Dissertation, Rice University. Accessed May 25, 2020. http://hdl.handle.net/1911/95526.

MLA Handbook (7^th Edition):

Sambasivan, Ramya. “Rh(II) metallopeptides for asymmetric catalysis.” 2015. Web. 25 May 2020.

Vancouver:

Sambasivan R. Rh(II) metallopeptides for asymmetric catalysis. [Internet] [Doctoral dissertation]. Rice University; 2015. [cited 2020 May 25]. Available from: http://hdl.handle.net/1911/95526.

Council of Science Editors:

Sambasivan R. Rh(II) metallopeptides for asymmetric catalysis. [Doctoral Dissertation]. Rice University; 2015. Available from: http://hdl.handle.net/1911/95526

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And / Or
		in

Open Access Theses and Dissertations