Matching Items (9)
Description
Global climate change (GCC) is among the most important issues of the 21st century. Adaptation to and mitigation of climate change are some of the salient local and regional challenges scientists, decision makers, and the general public face today and will be in the near future. However, designed adaptation and mitigation strategies do not guarantee success in coping with global climate change. Despite the robust and convincing body for anthropogenic global climate change research and science there is still a significant gap between the recommendations provided by the scientific community and the actual actions by the public and policy makers. In order to design, implement, and generate sufficient public support for policies and planning interventions at the national and international level, it is necessary to have a good understanding of the public's perceptions regarding GCC. Based on survey research in nine countries, the purpose of this study is two-fold: First, to understand the nature of public perceptions of global climate change in different countries; and secondly to identi-fy perception factors which have a significant impact on the public's willingness to sup-port GCC policies or commit to behavioral changes to reduce GHG emissions. Factors such as trust in GCC information which need to be considered in future climate change communication efforts are also dealt with in this dissertation. This study has identified several aspects that need to be considered in future communication programs. GCC is characterized by high uncertainties, unfamiliar risks, and other characteristics of hazards which make personal connections, responsibility and engagement difficult. Communication efforts need to acknowledge these obstacles, build up trust and motivate the public to be more engaged in reducing GCC by emphasizing the multiple benefits of many policies outside of just reducing GCC. Levels of skepticism among the public towards the reality of GCC as well as the trustworthiness and sufficien-cy of the scientific findings varies by country. Thus, communicators need to be aware of their audience in order to decide how educational their program needs to be.
ContributorsHagen, Bjoern (Author) / Pijawka, David (Thesis advisor) / Brazel, Anthony (Committee member) / Chhetri, Netra (Committee member) / Guhathakurta, Subhrajit (Committee member) / Arizona State University (Publisher)
Created2013
Description
The National Research Council 2011 report lists quantifying the extent of de facto (or unplanned) potable reuse in the U.S. as the top research need associated with assessing the potential for expanding the nations water supply through reuse of municipal wastewater. Efforts to identify the significance and potential health impacts of de facto water reuse are impeded by out dated information regarding the contribution of municipal wastewater effluent to potable water supplies. This project aims to answer this research need. The overall goal of the this project is to quantify the extent of de facto reuse by developing a model that estimates the amount of wastewater effluent that is present within drinking water treatment plants; and to use the model in conjunction with a survey to help assess public perceptions. The four-step approach to accomplish this goal includes: (1) creating a GIS-based model coupled with Python programming; (2) validating the model with field studies by analyzing sucralose as a wastewater tracer; (3) estimating the percentage of wastewater in raw drinking water sources under varying streamflow conditions; (4) and assessing through a social survey the perceptions of the general public relating to acceptance and occurrence of de facto reuse. The resulting De Facto Reuse in our Nations Consumable Supply (DRINCS) Model, estimates that treated municipal wastewater is present at nearly 50% of drinking water treatment plant intake sites serving greater than 10,000 people (N=2,056). Contrary to the high frequency of occurrence, the magnitude of occurrence is relatively low with 50% of impacted intakes yielding less than 1% de facto reuse under average streamflow conditions. Model estimates increase under low flow conditions (modeled by Q95), in several cases treated wastewater makes up 100% of the water supply. De facto reuse occurs at levels that surpass what is publically perceived in the three cities of Atlanta, GA, Philadelphia, PA, and Phoenix, AZ. Respondents with knowledge of de facto reuse occurrence are 10 times more likely to have a high acceptance (greater than 75%) of treated wastewater at their home tap.
ContributorsRice, Jacelyn (Author) / Westerhoff, Paul (Thesis advisor) / Abbaszadegan, Morteza (Committee member) / Vivoni, Enrique (Committee member) / Wutich, Amber (Committee member) / Arizona State University (Publisher)
Created2014
Description
Previous studies exploring variability in sentencing decisions have consistently found gender differences, such that women receive lighter sentences than men. In the proposed study, I present a new framework for understanding gender differences in sentencing preferences, including circumstances under which no gender differences should emerge. The Affordance Management Approach suggests that our minds are attuned to both group- and individual-level threats and opportunities that others afford us. I conceptualize the sentencing difference between men and women as driven by perceived affordances that assist or hinder an individual in achieving certain fundamental goals. When faced with sanctioning an offender in our community, the offender's sex, the victim's age, and environmental variables such as the ratio of men to women may influence our decision-making, because these factors have affordance implications. Thus, I hypothesized that individuals will express differences in the sentencing of offenders who commit assault, and that these differences vary by offender sex, victim age, and sex-ratio. The results indicate that, as predicted, female offenders received lighter sentencing than men when the offender committed an assault against a same-sex adult, but received equally punitive sentences as men when the assault was committed against a child. In general, results do not support a consistent effect of sex ratio as a factor when making sentencing decisions. Although results do not fully support the current study's specific hypotheses, there remains much to be gained from applying an affordance management perspective to understanding variability in sentencing between the sexes.
ContributorsUzzanti, Charlene Ann (Author) / Neuberg, Steven (Thesis director) / Knight, George (Committee member) / Salerno, Jessica (Committee member) / Barrett, The Honors College (Contributor) / School of Criminology and Criminal Justice (Contributor) / Department of Psychology (Contributor)
Created2015-05
Description
ABSTRACT The First Ladies: Exploring Achievement and Public Perception Overview The First Lady has become a fixation of the American people and the press. This thesis examines how specifically this interest in the President's wife has evolved over time. Additionally, it explores a variety of factors that could possibly influence public perception \u2014 era, cultural norms, and advances in technology. Research Questions Does the era of the tenure of the First Lady affect public perception and press coverage of her? Do the cultural norms and values of the time of the First Lady's tenure affect public perception and press coverage of her? Do advances in technology affect public perception and press coverage of the First Lady? Goals The goal of this thesis is to examine how the press and the public interact with First Ladies of varying eras and political stances to determine how their image is shaped and disseminated in the news and to the public. Methodology This thesis explored these questions comparing materials from presidential libraries, academic journals, and news articles from sources such as The New York Times and Washington Post.
ContributorsFranko, Anna (Author) / Edson, Belle (Thesis director) / Quinlivan, Raena (Committee member) / Barrett, The Honors College (Contributor)
Created2015-05
Description
Certain laws relating to self-defense were created known as "Stand Your Ground" laws. The public has interpreted these laws in ways that expand them beyond their original scope. To gain an understanding of self-defense laws, a look at the origins of self-defense is needed. Following the historical background, several cases will be examined that illustrate how the public has interpreted "Stand Your Ground" laws, and how these interpretations clash with elements of self-defense. Several philosophical principles including natural rights, the social contract, and some form of utilitarianism, will be discussed in relation to "Stand Your Ground" laws. A possible conclusion can be drawn that by misinterpreting "Stand Your Ground" laws, people compromise the philosophical ideals they hold, and infringe on other people's natural rights, break the social contract, and create societal unhappiness. Finally, some people are calling for reform of "Stand Your Ground" laws. These reforms focus on correcting public perception of "Stand Your Ground" laws.
ContributorsSmith, Geramya Joseph (Author) / Sigler, Mary (Thesis director) / Stanford, Michael (Committee member) / Kader, David (Committee member) / Barrett, The Honors College (Contributor) / Sandra Day O'Connor College of Law (Contributor) / W. P. Carey School of Business (Contributor)
Created2013-05
Description
The aim of this thesis is to explain the dichotomy between public perception of leadership and quantifiable measurement of leadership based on Information Measurement Theory, a method of utilizing deductive logic, and to identify and interpret the causes of such discrepancies as seen in the case of Steve Jobs. The general public perceives Steve Jobs to be an effective leader because he was visionary, entrepreneurial, charismatic and highly successful. However, these perceptions are not true indicators of leadership but rather qualitative interpretations of leadership without tangible evidence in support of this idea. An analysis of words found in multiple appearances of online articles relating to Steve Jobs and leadership revealed a variety of common factors associated with Steve Jobs' leadership, supporting a primarily positive viewpoint by the public. The thesis then identified how a new methodology of measuring leadership effectiveness based on quantitative data, known as the New Leadership Model, concludes Steve Jobs does not meet the criteria necessary to be considered a Best Value Leader, one who uses alignment rather than management, direction and control to achieve maximum efficiency within an organization. The discrepancies between public perception of Steve Jobs as a leader and the results of the New Leadership Model evaluation show significant variance. Potential rationale for these variances is offered in the thesis. In conclusion, the thesis argues that public perception will often differ from quantifiable measurement of leadership based on the interpretation of leadership by various groups and by the methods each group uses to identify characteristics of effective leadership.
ContributorsRoderique, Kelsey Boyd (Author) / Kashiwagi, Dean (Thesis director) / Kashiwagi, Jacob (Committee member) / Barrett, The Honors College (Contributor) / T. Denny Sanford School of Social and Family Dynamics (Contributor) / WPC Graduate Programs (Contributor) / Walter Cronkite School of Journalism and Mass Communication (Contributor)
Created2014-05
Description
Current conservation practices are substantially biased towards large, charismatic animals and are influenced by public perceptions of different animals. Therefore, it is important to understand how these perceptions are formed and what factors influence them in order to promote equitable conservation for all species. This study examines the effect of attending a park education program on public values, knowledge of, and attitudes towards a noncharismatic species. Data was collected from May through October 2016 at the Usery Mountain Regional Park "All About Scorpions" program. A four page, onsite, self-administered pre- and post-program survey was given to program attendees. An identical survey was given to hiking park visitors who had never attended the program as the control sample. Survey statements addressed participant's demographics, value of bugs, knowledge about scorpions, and attitudes toward scorpions. Data analysis was completed using paired t-tests to analyze any statistically significant changes in values, knowledge, and attitudes between pre- and post-participants. Independent sample t-tests were used to analyze the same between the control and pre-participants. The results showed no difference in the value of bugs for any of the survey participants. However, the program attendees had more positive attitudes and greater knowledge of scorpions than general park visitors, and attending the program further increased positive attitudes and knowledge. Contributions of the study are twofold: First, the results provide Usery with information regarding the influence of their public programs, along with how these programs can be improved to make a greater impact. Second, findings serve to extend the literature on what alters public perceptions and how educational programs can be used to change the current conservation mindset.
ContributorsKallman, Nicole Marie (Author) / Minteer, Ben (Thesis director) / Budruk, Megha (Committee member) / Pratt, Stephen (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
Unmanned aerial vehicles have received increased attention in the last decade due to their versatility, as well as the availability of inexpensive sensors (e.g. GPS, IMU) for their navigation and control. Multirotor vehicles, specifically quadrotors, have formed a fast growing field in robotics, with the range of applications spanning from surveil- lance and reconnaissance to agriculture and large area mapping. Although in most applications single quadrotors are used, there is an increasing interest in architectures controlling multiple quadrotors executing a collaborative task. This thesis introduces a new concept of control involving more than one quadrotors, according to which two quadrotors can be physically coupled in mid-flight. This concept equips the quadro- tors with new capabilities, e.g. increased payload or pursuit and capturing of other quadrotors. A comprehensive simulation of the approach is built to simulate coupled quadrotors. The dynamics and modeling of the coupled system is presented together with a discussion regarding the coupling mechanism, impact modeling and additional considerations that have been investigated. Simulation results are presented for cases of static coupling as well as enemy quadrotor pursuit and capture, together with an analysis of control methodology and gain tuning. Practical implementations are introduced as results show the feasibility of this design.
ContributorsLarsson, Daniel (Author) / Artemiadis, Panagiotis (Thesis advisor) / Marvi, Hamidreza (Committee member) / Berman, Spring (Committee member) / Arizona State University (Publisher)
Created2016
Description
There has been a vast increase in applications of Unmanned Aerial Vehicles (UAVs) in civilian domains. To operate in the civilian airspace, a UAV must be able to sense and avoid both static and moving obstacles for flight safety. While indoor and low-altitude environments are mainly occupied by static obstacles, risks in space of higher altitude primarily come from moving obstacles such as other aircraft or flying vehicles in the airspace. Therefore, the ability to avoid moving obstacles becomes a necessity
for Unmanned Aerial Vehicles.
Towards enabling a UAV to autonomously sense and avoid moving obstacles, this thesis makes the following contributions. Initially, an image-based reactive motion planner is developed for a quadrotor to avoid a fast approaching obstacle. Furthermore, A Dubin’s curve based geometry method is developed as a global path planner for a fixed-wing UAV to avoid collisions with aircraft. The image-based method is unable to produce an optimal path and the geometry method uses a simplified UAV model. To compensate
these two disadvantages, a series of algorithms built upon the Closed-Loop Rapid Exploratory Random Tree are developed as global path planners to generate collision avoidance paths in real time. The algorithms are validated in Software-In-the-Loop (SITL) and Hardware-In-the-Loop (HIL) simulations using a fixed-wing UAV model and in real flight experiments using quadrotors. It is observed that the algorithm enables a UAV to avoid moving obstacles approaching to it with different directions and speeds.
for Unmanned Aerial Vehicles.
Towards enabling a UAV to autonomously sense and avoid moving obstacles, this thesis makes the following contributions. Initially, an image-based reactive motion planner is developed for a quadrotor to avoid a fast approaching obstacle. Furthermore, A Dubin’s curve based geometry method is developed as a global path planner for a fixed-wing UAV to avoid collisions with aircraft. The image-based method is unable to produce an optimal path and the geometry method uses a simplified UAV model. To compensate
these two disadvantages, a series of algorithms built upon the Closed-Loop Rapid Exploratory Random Tree are developed as global path planners to generate collision avoidance paths in real time. The algorithms are validated in Software-In-the-Loop (SITL) and Hardware-In-the-Loop (HIL) simulations using a fixed-wing UAV model and in real flight experiments using quadrotors. It is observed that the algorithm enables a UAV to avoid moving obstacles approaching to it with different directions and speeds.
ContributorsLin, Yucong (Author) / Saripalli, Srikanth (Thesis advisor) / Scowen, Paul (Committee member) / Fainekos, Georgios (Committee member) / Thangavelautham, Jekanthan (Committee member) / Youngbull, Cody (Committee member) / Arizona State University (Publisher)
Created2015