The focus of this dissertation is on safety improvement at intersections and presenting how Vehicle/Bicycle-to-Infrastructure Communications can be a potential countermeasure for crashes resulting from drivers' and cyclists' violations at intersections. The characteristics (e.g., acceleration capabilities, etc.) of transportation modes affect the violation behavior. Therefore, the first building block is to identify the users' transportation mode. Consequently, having the mode information, the second building block is to predict whether or not the user is going to violate. This step focuses on two different modes (i.e., driver violation prediction and cyclist violation prediction). Warnings can then be issued for users in potential danger to react or for the infrastructure and vehicles so they can take appropriate actions to avoid or mitigate crashes. A smartphone application was developed to collect sensor data used to conduct the transportation mode recognition task. Driver violation prediction task at signalized intersections was conducted using observational and simulator data. Also, a naturalistic cycling experiment was designed for cyclist violation prediction task. Subsequently, cyclist violation behavior was investigated at both signalized and stop-controlled intersections. To build the prediction models in all the aforementioned tasks, various Artificial Intelligence techniques were adopted. K-fold Cross-Validation as well as Out-of-Bag error was used for model selection and validation. Transportation mode recognition models contributed to high classification accuracies (e.g., up to 98%). Thus, data obtained from the smartphone sensors were found to provide important information to distinguish between transportation modes. Driver violation (i.e., red light running) prediction models were resulted in high accuracies (i.e., up to 99.9%). Time to intersection (TTI), distance to intersection (DTI), the required deceleration parameter (RDP), and velocity at the onset of a yellow light were among the most important factors in violation prediction. Based on logistic regression analysis, movement type and presence of other users were found as significant factors affecting the probability of red light violations by cyclists at signalized intersections. Also, presence of other road users and age were the significant factors affecting violations at stop-controlled intersections. In case of stop-controlled intersections, violation prediction models resulted in error rates of 0 to 10 percent depending on how far from the intersection the prediction task is conducted. / Ph. D.

Land use and building controls inherited from colonial tradition guide the implementation of urban development plans in developing countries. Current planning research argues that regulatory structures like land use, zoning, and building regulations are inappropriate given existing socio-economic, cultural, and institutional contexts in developing countries (Dowall 1992, Mehta et.al 1989, Njoh 1995, UNCHS 1980). However, little research has been conducted to establish how the violations of building and land use regulations affect the evolution of urban landscapes in developing countries. This research contends that the combination between inappropriate land use regulations and institutional weaknesses of planning agencies results in a high rate of violations of land use and building regulations. These violations are deemed as having a significant impact on Indian urban development. In order to empirically test these theoretical claims, the study uses a residential neighborhood in Bangalore, India. The case study analyzes six different building and land use requirements that are applicable to all the neighborhood plots. The research examined whether the pattern of violations observed was consistent with the theoretical argument presented in the research. To this end, the method compared data collected in field surveys with regulated requirements and information from architects and planners in Bangalore and found that: -Violations of land use regulations indicated a strong economic motivation -Violations of set back requirements suggested socio-cultural and economic motivations -Interviews suggested that violations were facilitated by institutional failures and inefficiencies. Findings from this research will help urban planners in Bangalore tailor regulatory and non-regulatory development controls that are in keeping with citizens’ economic, socio-cultural, and institutional goals and realistic projections of compliance. / Master of Urban and Regional Planning

It is estimated that as many as 2.7 million crashes occur each year at intersections or are intersection related; resulting in over 8500 fatalities each year. These statistics have prompted government and corporate sponsored research into collision countermeasure systems that can enhance safety at intersections. Researchers are investigating technologies to provide an infrastructure-based or infrastructure-cooperative Intersection Decision Support (IDS) systems. Such systems would use pre-specified algorithms to identify drivers that have a high likelihood of violating the traffic signal and thus increase the risk of a collision. The system would subsequently warn the violating driver to stop though an in-vehicle or infrastructure-mounted interface. An IDS algorithm must be designed to provide adequate time for the driver to perceive, react, and stop the vehicle, while simultaneously avoiding a high false alarm rate. Prior to developing these algorithms, scientists must understand how drivers respond to traffic signals. Little research has focused on the influence of driver state on red-light running behavior or methods for distinguishing red light violators from non-violators. The objective of the present study was to define trends associated with intersection crossings under different driver states and to explore the point detection method of predicting red light running upstream of the intersection. This was accomplished through a test-track mixed-factor experiment with 28 participants. Each participant experienced a baseline (complete a full stop at the red light), distracted (misses signal phase change due to inattention), and willful (driver knowingly makes a late crossing in an attempt to 'beat the light') driver state conditions. To provide the opportunity for red-light running behavior from participants, the amber change interval began at five different distances from the intersection. These distances were located near and within the dilemma zone, a region in which drivers have a difficult time deciding whether to go or to stop. Data collected from in-vehicle sensors was statistically analyzed to determine significant effects between driver states, and to investigate point detection algorithms. / Master of Science

Employees’ information security policy (ISP) related behaviors have been paid attention by previous studies in the past decades. Among different factors that are influential on employees’ ISP behaviors, different leadership styles have been tested under the information security context; however, as one leadership style that is highly related to employees’ positive organization behaviors, the role of ethical leadership has been largely overlooked under the information security context. In addition, most research in the past decades overly focused on employees’ performance on ISP in-role behaviors, including ISP compliance and violation behaviors, where extra-role behaviors – security behaviors that are beneficial to an organization’s information security protection but not required by the organization – have long been overlooked as well. Therefore, this primary focus of this research is to test the role of ethical leadership in influencing employees’ ISP-related behaviors, including both in-role and extra-role behaviors through the mediation mechanism of the theory of planned behavior. To test the 11 hypotheses in this research model, I conducted two studies using different methods following McGrath (1982)’s suggestion, including a survey-based experiment and a cross-sectional survey. Both studies were conducted using a two-phase study design, including a preliminary investigation and main investigation. The findings of this research showed positive influences of ethical leadership on both ISP in-role and extra-role behaviors directly and indirectly through three mediators, including subjective norm about security behavior, behavioral control over security behavior, and attitude toward security behavior. Furthermore, the findings suggested attitude toward security behavior did not significantly influence ISP extra-role behavior. This research contributed to research streams of information security, ethical leadership, and theory of planned behavior, and provided managerial suggestions to organizations by showing how the ethical leadership influences employees’ two information security behaviors and the paths of improving employees’ information security performances in the organization.

CUORE is one of the world-leading experiments to search for neutrinoless double beta decay. The excellent energy resolution and the stability of the detectors at CUORE also allow for other rare event searches. This thesis describes an experimental analysis undertaken to search for baryon number violation in 130Te using the data acquired by the CUORE detector. The conservation of the baryon number in the Standard Model relies on an accidental symmetry rather than being deduced from fundamental principles. If there is evidence suggesting a breach of this symmetry, it would significantly impact our understanding of the universe, especially concerning the origin of the matter-antimatter asymmetry. One possible way for this conservation principle to be violated is through tri-nucleon decay, where three nucleons decay simultaneously within a nucleus. For 130Te, the resulting decay products would be emitted with energy in the GeV range, making them a promising signal for detection in the CUORE experiment. This thesis describes the search signatures, the relevant background, and the analysis techniques used in this investigation, and results for an exposure of 236.6 kg·yr are presented. The daughter nucleus of the decay (127In) is unstable, and its decay chain can offer an secondary signature coinciding with the emitted energy. The viability of adding this secondary signature is also presented. / Doctor of Philosophy / Since the beginning of scientific thought, humankind has asked why there is something in the Universe instead of nothing. As our understanding of the working principles of the Universe deepened, this question has been refined and focused on an intriguing imbalance easily ob- served around us: The imbalance of the quantity of matter over anti-matter. We have never observed anti-matter galaxies or stars, and we never observe anti-matter manifesting around us in our daily lives. There are many ideas physicists have developed to explain this mysteri- ous absence of anti-matter, and one of them involves searching for an extremely rare radioac- tive process called triple nucleon decay. This thesis uses the data acquired by the nuclear experiment CUORE, situated in the Gran Sasso mountains in Italy, to look for this process.

Conservation easements are among the fastest growing techniques for protecting land and open space. Conservation easements are legal agreements between a landowner and a conservation organization that limits or restricts entirely the right to develop a property in order to protect important conservation values associated with the property. At the heart of the conservation easement movement is the assumption that easements will protect ecologically important lands in perpetuity. However, there is little evidence that conservation easements can protect land permanently. Very few land trusts have experience in dealing with the myriad of challenges associated with long-term enforcement of conservation easements. This study sought to examine scenic easements acquired for the Blue Ridge Parkway in the 1930's and 40's and to develop an understanding of the challenges faced by the Parkway in attempting to enforce the terms of scenic easements drafted nearly 70 years ago. The scenic easements acquired for the Blue Ridge Parkways represent the first wide spread use of conservation easements in the country. The Parkway's early architects had few examples of easement programs to assist them in acquiring and managing these early forms of conservation easement nor did the NPS have the network of conservation organizations that exists today. This study reviews the process utilized by the Commonwealth of Virginia and the State of North Carolina to acquire scenic easements for the Blue Ridge Parkway and assesses the deeds used to convey the scenic easements from the states to the federal government. Further, this study evaluates and examines the number and types of violations of easement terms experienced by the Parkway and the various factors that may have contributed to violations of scenic easement restrictions and requests to alter/amend easements. This study also evaluates the various strategies used by the National Park Service to exchange and release scenic easements. Finally, this study concludes with a number of recommendations for improving the management of the Parkway's scenic easements and how organizations currently holding conservations can improve the stewardship of easements by incorporating adaptive management principles into their conservation easement stewardship programs. / Master of Urban and Regional Planning

Intersection crashes account for over one-third of all crashes in the U.S., and 39% of these result in injury or death. As part of a larger effort to develop and evaluate in-vehicle countermeasures to reduce the number of intersection-related crashes, haptic warnings and a combined haptic/auditory warning were explored and compared to combined visual/auditory warnings. The first phase of this study determined which haptic brake pulse warning candidate most often resulted in the driver successfully stopping for an intersection. Five brake pulse warnings were tested (varied with respect to jerk, duration, and the number of pulses). Participants receiving the haptic warnings were 38 times more likely to stop at the intersection than those receiving no warning and 7.6 times more likely to stop than those receiving a combined visual/auditory tone warning. The 600ms-3 pulses condition was advanced to the second phase because it provided the longest warning and had a more favorable subjective rating; it was then combined with an auditory verbal warning (urgent "STOP"). This phase determined whether the added verbal warning resulted in differences from the haptic warning alone. Although the warning was activated 7.62 m (25 ft) closer to the intersection in the second phase than in the first phase, there were no significant differences for the reaction times and distance to stop bar. Participants receiving the haptic plus auditory verbal warning were also 1.5 times more likely to stop than those who received the haptic warning alone. Overall, this study shows that haptic warnings show promise for warning drivers of impending intersection violations. Guidelines for haptic intersection warnings were developed, including a recommendation that haptic warnings be combined with auditory verbal warnings for increased warning effectiveness. / Master of Science

The Qweak experiment has precisely determined the weak charge of the proton Qp w by measuring the parity-violating asymmetry in elastic electron-proton scattering at a low momentum transfer of Q2 = 0.0249 (GeV/c)2 . Qpw has a definite prediction in the Standard Model, and a value of sin2 θW can be extracted from it for comparison with other neutral current observables. Qweak measured the weak charge of the proton to be Qpw(P V ES) = 0.0719 ± 0.0045, which is consistent with the Standard Model value of Qp w(SM) = 0.0708 ± 0.0003. Qweak ran at the Thomas Jefferson National Accelerator Facility for two and a half years and was installed in experimental Hall C. A 180µA beam of longitudinally polarized electrons at 1.16 GeV scattered off a liquid hydrogen target of unpolarized protons. The electrons were collimated to an acceptance of 5.8◦ to 11.6◦ and then passed through a magnetic spectrometer and onto quartz Čerenkov detector bars. A detailed description of the theory and motivation behind the Qweak experiment is given. An overview of the Qweak apparatus and an in-depth discussion of the luminosity monitor performance is presented. A general overview of the Qweak analysis is also presented, with a focus on the beamline background correction, the nonlinearity measurement, and the simulation to constrain error for a rescattering effect. Also detailed here is the final, unblinded Qweak result, which determined Qpw to 6.2% and provided the highest precision measurement of sin2θW at low energy. / PHD / Q_weak is a precision-frontier accelerator driven experiment that took place at Thomas Jefferson National Accelerator Facility. Precision-frontier exists alongside the better known energy-frontier (which includes well known labs like the Large Hadron Collider) and refers to experiments which precisely measure values which are predicted by the latest theory. Deviations in these measurements help rule out theories and are used by energy-frontier experiments to know where to look for new physics. The Q_weak experiment measured the weak charge of the proton, which can be though of as the weak analog to electric charge. This value has never been measured before, and, since it is predicted to be small by current theory, is a good place to look for new physics. The value measured by this experiment indicates good agreement with the current theory. Even though there is good agreement with theory, Q_weak is an important result which will help define future physics models. In this thesis is an overview of the theoretical motivation of Q_weak, a general overview of the experimental design, in-depth discussion of the background detectors, general overview of the analysis with detailed descriptions of the several important corrections.

In this essay I examine the ethics of offensive humor through the lens of the Benign Violation Theory, which posits that humor arises when something seems wrong (a violation) but also okay (benign). I argue that while offensive humor can cause harm by promoting stereotypes and disengaging compassion, ultimately the arguments for free speech justify allowing it, as restricting such speech could lead to a slippery slope of unjustified censorship. Instead of restriction, the better response is more speech and efforts to address the root causes inspiring offensive humor.

L’explosion du nombre de séquences permet à la phylogénomique, c’est-à-dire l’étude des liens de parenté entre espèces à partir de grands alignements multi-gènes, de prendre son essor. C’est incontestablement un moyen de pallier aux erreurs stochastiques des phylogénies simple gène, mais de nombreux problèmes demeurent malgré les progrès réalisés dans la modélisation du processus évolutif. Dans cette thèse, nous nous attachons à caractériser certains aspects du mauvais ajustement du modèle aux données, et à étudier leur impact sur l’exactitude de l’inférence. Contrairement à l’hétérotachie, la variation au cours du temps du processus de substitution en acides aminés a reçu peu d’attention jusqu’alors. Non seulement nous montrons que cette hétérogénéité est largement répandue chez les animaux, mais aussi que son existence peut nuire à la qualité de l’inférence phylogénomique. Ainsi en l’absence d’un modèle adéquat, la suppression des colonnes hétérogènes, mal gérées par le modèle, peut faire disparaître un artéfact de reconstruction. Dans un cadre phylogénomique, les techniques de séquençage utilisées impliquent souvent que tous les gènes ne sont pas présents pour toutes les espèces. La controverse sur l’impact de la quantité de cellules vides a récemment été réactualisée, mais la majorité des études sur les données manquantes sont faites sur de petits jeux de séquences simulées. Nous nous sommes donc intéressés à quantifier cet impact dans le cas d’un large alignement de données réelles. Pour un taux raisonnable de données manquantes, il appert que l’incomplétude de l’alignement affecte moins l’exactitude de l’inférence que le choix du modèle. Au contraire, l’ajout d’une séquence incomplète mais qui casse une longue branche peut restaurer, au moins partiellement, une phylogénie erronée. Comme les violations de modèle constituent toujours la limitation majeure dans l’exactitude de l’inférence phylogénétique, l’amélioration de l’échantillonnage des espèces et des gènes reste une alternative utile en l’absence d’un modèle adéquat. Nous avons donc développé un logiciel de sélection de séquences qui construit des jeux de données reproductibles, en se basant sur la quantité de données présentes, la vitesse d’évolution et les biais de composition. Lors de cette étude nous avons montré que l’expertise humaine apporte pour l’instant encore un savoir incontournable. Les différentes analyses réalisées pour cette thèse concluent à l’importance primordiale du modèle évolutif. / The explosion of sequence number allows for phylogenomics, the study of species relationships based on large multi-gene alignments, to flourish. Without any doubt, phylogenomics is essentially an efficient way to eliminate the problems of single gene phylogenies due to stochastic errors, but numerous problems remain despite obvious progress realized in modeling evolutionary process. In this PhD-thesis, we are trying to characterize some consequences of a poor model fit and to study their impact on the accuracy of the phylogenetic inference. In contrast to heterotachy, the variation in the amino acid substitution process over time did not attract so far a lot of attention. We demonstrate that this heterogeneity is frequently observed within animals, but also that its existence can interfere with the quality of phylogenomic inference. In absence of an adequate model, the elimination of heterogeneous columns, which are poorly handled by the model, can eliminate an artefactual reconstruction. In a phylogenomic framework, the sequencing strategies often result in a situation where some genes are absent for some species. The issue about the impact of the quantity of empty cells was recently relaunched, but the majority of studies on missing data is performed on small datasets of simulated sequences. Therefore, we were interested on measuring the impact in the case of a large alignment of real data. With a reasonable amount of missing data, it seems that the accuracy of the inference is influenced rather by the choice of the model than the incompleteness of the alignment. For example, the addition of an incomplete sequence that breaks a long branch can at least partially re-establish an artefactual phylogeny. Because, model violations are always representing the major limitation of the accuracy of the phylogenetic inference, the improvement of species and gene sampling remains a useful alternative in the absence of an adequate model. Therefore, we developed a sequence-selection software, which allows the reproducible construction of datasets, based on the quantity of data, their evolutionary speed and their compositional bias. During this study, we did realize that the human expertise still furnishes an indispensable knowledge. The various analyses performed in the course of this PhD thesis agree on the primordial importance of the model of sequence evolution.