Matching Items (54)
Description
This thesis describes the design process used in the creation of a two stage cellular power amplifier. A background for understanding amplifier linearity, device properties, and ACLR estimation is provided. An outline of the design goals is given with a focus on linearity with high efficiency. The full design is broken into smaller elements which are discussed in detail. The main contribution of this thesis is the description of a novel interstage matching network topology for increasing efficiency. Ultimately the full amplifier design is simulated and compared to the measured results and design goals. It was concluded that the design was successful, and used in a commercially available product.
ContributorsSpivey, Erin (Author) / Aberle, James T., 1961- (Thesis advisor) / Kitchen, Jennifer (Committee member) / Ozev, Sule (Committee member) / Arizona State University (Publisher)
Created2012
Description
This dissertation studies the role of organizational politics and power and their role in the success of public service Public Private Partnerships (PPPs). By doing so, it addresses two areas of research in network governance and organizational theory. On one hand it explores the role of public private partnerships in the emerging network governance paradigm of public administration. On the other hand it studies the widely discussed but considerably under-researched role of organizational power in network governance. The literature review establishes public service PPPs as a sub type of governance networks, and provides an initial framework to study the nature and dynamics of power in these PPPs. The research is descriptive in nature and uses inductive reasoning in the tradition of Kathleen Eisenhardt. Case studies in rural areas of Punjab, Pakistan are conducted on two very similar PPPs. A replication logic is used to understand how power contributed to the success of one of those projects and lack of success in the other. Based on analysis of the findings, the dissertation concludes that public service PPPs succeed when the goals of the PPP are aligned with the goals of the most powerful collaborators. This is because regardless of its structure, a public service PPP pursues the goals targeted by the sum total of the power of its politically active collaborators. The dissertation also provides insight into the complexity of the concept of success in public service PPPs and the donor control on the operation and outcomes of public service PPPs.
ContributorsBashir, Mohsin (Author) / Denhardt, Robert B. (Thesis advisor) / Nahavandi, Afsaneh (Thesis advisor) / Shockley, Gordon E (Committee member) / Denhardt, Janet V (Committee member) / Arizona State University (Publisher)
Created2012
Description
This qualitative study uses the theoretical concepts of identity, agency, and power to explore the ways in which students in their moment-to-moment interactions enact identities, agency, and power as they engage in the activity of writing and participate in a writing workshop. This research highlights what happens to writers as they engage in writing processes with one another and moves away from interpreting what happens between students as only cognitive or behavioral phenomenon. Additionally, through the lenses of identity, agency, and power, the complexity of what it means to be a writer in a writing workshop is made visible. Data for the study were collected over a five-month period and include observations of children participating in a third-grade writing workshop, written field notes, and detailed recording of the actions and interactions among the students as well as the teacher and students to capture the time, space, and participants' activity during the writing workshop. Whole class and small-group interactions were video and/or audiorecorded daily for later transcription, observation and reflection. Semi-structured informal interviews and informal talks with the students and the teachers were conducted and recorded on a regular basis, and the students' written work and other related artifacts were collected to examine the students' work as writers. The research reveals three major themes: 1) students enact multiple identities to serve a variety of purposes; 2) students enact agency in the ordinary and everyday practices of the writing workshop to change their present interactions, circumstances, and conditions; and 3) in their microlevel interactions, students enact macrolevel notions of power that shift classroom as well as peer relations. Additionally this study reveals the ways in which students use their written texts as evidence to substantiate the claims they are making about themselves and about others as learners and as people.
ContributorsKander, Faryl Leigh (Author) / Smith, Karen (Thesis advisor) / Edelsky, Carole (Committee member) / Hudelson, Sarah (Committee member) / Marsh, Josephine (Committee member) / Arizona State University (Publisher)
Created2010
Description
In the past, it has been assumed that measurement and predictive invariance are consistent so that if one form of invariance holds the other form should also hold. However, some studies have proven that both forms of invariance only hold under certain conditions such as factorial invariance and invariance in the common factor variances. The present research examined Type I errors and the statistical power of a method that detects violations to the factorial invariant model in the presence of group differences in regression intercepts, under different sample sizes and different number of predictors (one or two). Data were simulated under two models: in model A only differences in the factor means were allowed, while model B violated invariance. A factorial invariant model was fitted to the data. Type I errors were defined as the proportion of samples in which the hypothesis of invariance was incorrectly rejected, and statistical power was defined as the proportion of samples in which the hypothesis of factorial invariance was correctly rejected. In the case of one predictor, the results show that the chi-square statistic has low power to detect violations to the model. Unexpected and systematic results were obtained regarding the negative unique variance in the predictor. It is proposed that negative unique variance in the predictor can be used as indication of measurement bias instead of the chi-square fit statistic with sample sizes of 500 or more. The results of the two predictor case show larger power. In both cases Type I errors were as expected. The implications of the results and some suggestions for increasing the power of the method are provided.
ContributorsAguilar, Margarita Olivera (Author) / Millsap, Roger E. (Thesis advisor) / Aiken, Leona S. (Committee member) / Enders, Craig K. (Committee member) / Arizona State University (Publisher)
Created2010
Description
The basis of social power which has expanded in the most dangerous way over the last few decades has been that of information control, and how that control is used. Misinformation and the intentional spread of misinformation referred to as disinformation, has become commonplace among various bodies of power to either expand their own influence or diminish opposing influence. The methods of disinformation utilized in the various spheres of politics, the commercial marketplace, and the media today are explored in depth to better contextualize and describe the problems that disinformation and its use pose in the world today.
ContributorsDoyle, Brenden C (Author) / Sturgess, Jessica (Thesis director) / Walker, Shawn (Committee member) / College of Health Solutions (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description
A study on the power inequity between men and women in inter-gender conversations, how it manifests linguistically, and the social ramifications thereafter. Conversations from the game show Cash Cab are used to this point.
ContributorsPirotte, Adeline Rose (Author) / Adams, Karen (Thesis director) / Bryant, Jason (Committee member) / Department of English (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description
As China is using its Belt and Road Initiative to solidify strategic partnerships, which China is consciously forming with the intention of engineering shifts in the regional balance of power, it strengthens its hegemony and therefore raises the significance of the BRI and CPEC as an instrument to position itself as an emerging global power. I will explore this thesis statement by using the China-Pakistan Economic Corridor as a case study.
ContributorsKhwaja, Aaliyah (Author) / Iheduru, Okechukwu (Thesis director) / Haines, Chad (Committee member) / Barrett, The Honors College (Contributor) / School of Politics and Global Studies (Contributor) / Historical, Philosophical & Religious Studies, Sch (Contributor)
Created2022-05
Description
When does coercion succeed in international relations? Why do states resist coercion in some cases but concede in others? This dissertation adopts network analysis to investigate the network factors influencing the success and failure of economic and military coercion. The first chapter addresses the coercion target states’ information problem regarding how coercers would react to the targets’ resistances and concessions. By regarding resistances and concessions as network ties that can transmit information, it argues that past coercion outcomes endogenously influence targets’ current responses and coercion outcomes. Specifically, target states are more likely to concede to coercers who have been successful in gaining others’ compliance. Sender states are more likely to succeed in coercion when they had successful coercion in the past. The second chapter adds a condition to the first chapter’s argument. It argues that when being coerced by the same sender, a stronger sanction target’s compliance is likely to prompt a weaker target’s acquiescence, and that a weaker target’s resistance is likely to prompt a stronger target’s resistance. The third chapter explores how states’ positions in international security and economic networks influence the success and failure of military and trade coercion. States that occupy different network positions own different network power. I argue that when the coercion sender has relatively more network power than the target, the more likely coercion will be successful. I use interstate military alliances and arms transfer data to operationalize international security networks. International economic networks are operationalized by bilateral trade and regional trade agreements networks. Using military and trade coercion outcomes in the Military Compellent Threats (MCT) and the Threats and Imposition of Economic Sanctions (TIES) datasets as outcome variables, the statistical analysis partially supports my argument. Trade coercion is more likely to succeed when the sender has more network power. However, military coercion is less likely to succeed when the sender has more network power than the target.
ContributorsAi, Weining (Author) / Peterson, Timothy (Thesis advisor) / Thies, Cameron (Committee member) / Thomson, Henry (Committee member) / Chyzh, Olga (Committee member) / Arizona State University (Publisher)
Created2023
Description
The Garden is a series of seven looks which represent specific flowers. These representations are seen not only in their color ways, but also in their use of textured fabrics, bold silhouettes, and detailed embellishment techniques such as beading and covered buttons. My goal was to embody flowers, not to simply create garments with flowers on them. Instead, these garments ARE flowers. These forms are meant to call back to classic feminine shapes while giving them a modern twist in their asymmetry, fearless lines, and suggestiveness. They are a celebration of women and their connection with the delicate and powerful aspects of nature and their interactions with the human form.
ContributorsThomas, Veda "V" (Author) / Tevzadze, Irina (Thesis director) / Stephenson, Kathy (Committee member) / Barrett, The Honors College (Contributor) / School of Art (Contributor)
Created2022-05
Description
Sedentary behavior and excessive weight gain have been proven to deteriorate many characteristics of muscle. Low muscular power and mass with excess fat mass are risk factors for a multitude of chronic conditions and functional disabilities. Resistance training (RT) has long been accepted as a rehabilitative method of maintaining or enhancing muscular performance and composition. There are various methods of determining lower extremity muscular power; however, isokinetic dynamometry has emerged as one of the most accurate and reliable methods in clinical and research settings. Likewise, various methods exist for determining muscle thickness; however, many of those methods are expensive and can expose individuals to radiation. Ultrasonography has emerged as an accurate and reliable alternative to measuring lower extremity muscle thickness. The objective of this study was to assess the effects of high-load/low-volume (HLLV) and low-load/high-volume (LLHV) RT on isokinetic knee extensor and flexor peak power in sedentary, RT naïve, overweight or obese men and women (Body Mass Index ≥ 25 kg/m2). Twenty-one subjects (n = 21) completed this study and were randomized into one of the following groups: control, a HLLV group that performed three sets of 5 repetitions for all exercises until volitional fatigue, and LLHV which performed three sets of 15 repetitions for all exercises until volitional fatigue. Subjects randomized to the RT groups performed full-body exercises routines on three non-consecutive days per week. Changes in isokinetic knee extensor and flexor peak power, quadriceps ultrasound muscle thickness, and right leg segment of dual-energy X-ray absorptiometry (DEXA) scans were measured before and after the 12-week RT intervention. There were no significant differences found in group, time or, group by time interactions for knee extensor and flexor peak power using isokinetic dynamometry. Other than a group interaction for vastus intermedius muscle thickness (P=0.008), no significant interactions or differences were observed for any of the other variables tested. Based on the results of this study, neither high- nor low-load RT resulted in significant differences between intervention groups in peak power of the knee extensors and flexor, muscle thickness changes of the vastus intermedius, and vastus lateralis and, in the right lower extremity segmented body composition measures using DEXA.
ContributorsSarellis, Sofoklis Demetrios (Author) / Ofori, Edward (Thesis advisor) / Angadi, Siddhartha (Committee member) / Gaesser, Glenn (Committee member) / Arizona State University (Publisher)
Created2020