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- Genre: Doctoral Dissertation
- Creators: Arizona State University
- Creators: McClure, Samuel
Description
Efforts to improve student learning in K-12 education in the US are not new; however, educational research has traditionally focused on individual components of schools (e.g., teacher professional development, leadership, social relationships, programs, curricula) targeting teachers to improve student learning. While these innovations provide hope for change, they are limited in their focus and application to other school settings in that school contexts are unique to the individuals making them up and the collaborative missions and goals they pursue. To foster capacity for teachers to implement instructional reforms (i.e., how teachers teach), research must be focused on a holistic interpretation of the school as an organization. This study developed and validated a survey to examine elementary teachers’ science and mathematics instructional practice use as well as their perceptions of instructional reform capacity within their school environment from an ecological organization perspective. Over 300 elementary teachers from a large urban district participated in the survey over the course of four weeks. Findings indicated elementary teachers utilized teacher-centered instructional practices more frequently than reform-oriented (i.e., student-centered) instructional practices. However, teachers reported more frequent use of instructional practices in their mathematics lessons compared to science lessons. Furthermore, data was used to investigate the underlying dimensions of instructional reform capacity and examine the relationship between those dimensions and instructional practice use both within and between subjects (i.e., science and mathematics). Results revealed dimensions underlying instructional reform capacity as well as correlations with instructional practice use are not the same for elementary science and mathematics. Dimensions of professional learning, structure, and policy were more strongly correlated with reform-oriented (i.e., student-centered) instructional practices. Implications from these findings suggest the necessity of a more holistic perspective of instructional reform capacity to better support instructional reforms across subject areas in schools, on both the local level and within research.
ContributorsGlassmeyer, Kristi (Author) / Judson, Eugene (Thesis advisor) / Hayes, Kathryn (Committee member) / Kim, Jeongeun (Committee member) / Arizona State University (Publisher)
Created2022
Description
Informed Consent is a ubiquitous way of enshrining choice in the United States which regulates social relations in domains as varied as health, research, access to institutions, and prisons. Informed consent describes an imagined epistemic relationship between right knowledge and legitimate choice, where judgements of capacitation determine whether a person is the right sort of person to take up knowledge which will render them agential under conditions of asymmetrical power. It has been developed over and over to solve problems of injustice, where the injustice in question is understood in terms of undue infringement on individual autonomy, and the logic of informed consent is re-invented to reframe the problem at hand as a rightful matter of individual choice. It is imagined to respect autonomy, and to perform a transformative "moral magic" that makes the forbidden quotidian. This dissertation develops this account of informed consent through a series of cases, each of which explicates different aspects of the technopolitics of informed consent. It begins with genetic counseling as a paradigm case in the logic of informed consent: a well-developed field that emerged to inform people about genetics and genomics in the interest not only of individual reproductive choice, but in opposition to eugenic shaping of populations through genetic knowledge. Next, pro- and anti- abortion deployments of informed consent illustrate an epistemology of information itself, which is understood to agentialize as well as to serve as a site for refusing choice to those deemed incapacitated. Third, liability waivers and requests for student informed consent on university campuses during the pandemic show informed consent to be a tool for the exercise of biopolitics and, in particular, for making responsible subjects. Finally, civil libertarian opposition to migrant genetic testing on the grounds that migrants weren’t asked for consent demonstrates a tight coupling between consent, imaginations of just state-subject relations, and what it means to be recognized as a person. Ultimately, this dissertation argues for a practice of attention that sees informed consent as an important site for the exercise of power and offers frameworks for analyzing it as such.
ContributorsDietz, Elizabeth A (Author) / Hurlbut, Ben (Thesis advisor) / Reynolds, Joel M (Committee member) / Brian, Jennifer (Committee member) / Ellison, Karin (Committee member) / Arizona State University (Publisher)
Created2023
Description2021年10月24日,中共中央、国务院印发《关于全面准确全面贯彻新发展理念做好碳达峰碳中和工作的意见》,再次对碳达峰碳中和做出战略部署。意见中重点指出,到2030年单位国内生产总值能耗大幅下降；与2005年相比，单位GDP的二氧化碳排放量下降了65%以上；非化石能源消费比例达到25%左右。11月7日,中共中央、国务院发布关于深入打好污染防治攻坚战的意见。其中提到,坚决遏制高耗能、高排放项目盲目发展。2020年第七十五届联合国大会上,我国向世界郑重承诺：力争在2030年前实现碳达峰,努力争取在2060年前实现碳中和。
实现碳达峰、碳中和目标,意味着我国在产业结构、能源结构、投资结构、生活方式等方面都将发生深刻转变。服务好碳达峰、碳中和的战略部署,是未来一段时期金融工作的重点之一。通过对电解铝环节能耗控制和总量控制是实现碳排放下降的重要途径之一。
目前大多研究文献集中在宏观层面的“双碳”目标趋势与热点分析,研究推导缺乏数据支撑。大多数文献以某一个因子为重点进行研究,研究具有片面性。为了有效量化通过对电解铝行业产能布局、产量调整,通过对电解铝上市企业经营数据在"双碳"目标实施前后变化的定量分析,进一步理解和分析碳达峰及碳中和对电解铝行业的影响。
量化和评估碳达峰和碳中和目标实施前后对电解铝行业的影响,本文将电解铝行业政策实施前后的政策变量作为此研究的主要自变量。同时,将电解铝上市企业的产能或产量作为因变量,将总资产、资产负债率等作为控制变量予以研究。本文选取的数据示例来自于WIND数据库和CSMAR经济金融研究数据库。
距离碳达峰及碳中和具体目标首次公布的时间短,碳达峰、碳中和工作的路线图、施工图处于建立与推进阶段,可研究的目标公布后的上市企业样本数据有限,在研究电解铝上市企业样本的基础上,本文也尝试用同样的方法研究控制组上市企业的财务数据及产能、产量数据,通过对比"双碳"目标对电解铝影响的差异,更加完整地论证碳中和及碳达峰战略对电解铝行业的影响。
ContributorsRuan, Xiaowen (Author) / Huang, Xiaochuan (Thesis advisor) / Sun, Jianfei (Thesis advisor) / Wang, Tan (Committee member) / Arizona State University (Publisher)
Created2023
Description
Working memory capacity and fluid intelligence are important predictors of performance in educational settings. Thus, understanding the processes underlying the relation between working memory capacity and fluid intelligence is important. Three large scale individual differences experiments were conducted to determine the mechanisms underlying the relation between working memory capacity and fluid intelligence. Experiments 1 and 2 were designed to assess whether individual differences in strategic behavior contribute to the variance shared between working memory capacity and fluid intelligence. In Experiment 3, competing theories for describing the underlying processes (cognitive vs. strategy) were evaluated in a comprehensive examination of potential underlying mechanisms. These data help inform existing theories about the mechanisms underlying the relation between WMC and gF. However, these data also indicate that the current theoretical model of the shared variance between WMC and gF would need to be revised to account for the data in Experiment 3. Possible sources of misfit are considered in the discussion along with a consideration of the theoretical implications of observing those relations in the Experiment 3 data.
ContributorsWingert, Kimberly Marie (Author) / Brewer, Gene A. (Thesis advisor) / McNamara, Danielle (Thesis advisor) / McClure, Samuel (Committee member) / Redick, Thomas (Committee member) / Arizona State University (Publisher)
Created2018
Description
The open nature of the wireless communication medium makes it inherently vulnerable to an active attack, wherein a malicious adversary (or jammer) transmits into the medium to disrupt the operation of the legitimate users. Therefore, developing techniques to manage the presence of a jammer and to characterize the effect of an attacker on the fundamental limits of wireless communication networks is important. This dissertation studies various Gaussian communication networks in the presence of such an adversarial jammer.
First of all, a standard Gaussian channel is considered in the presence of a jammer, known as a Gaussian arbitrarily-varying channel, but with list-decoding at the receiver. The receiver decodes a list of messages, instead of only one message, with the goal of the correct message being an element of the list. The capacity is characterized, and it is shown that under some transmitter's power constraints the adversary is able to suspend the communication between the legitimate users and make the capacity zero.
Next, generalized packing lemmas are introduced for Gaussian adversarial channels to achieve the capacity bounds for three Gaussian multi-user channels in the presence of adversarial jammers. Inner and outer bounds on the capacity regions of Gaussian multiple-access channels, Gaussian broadcast channels, and Gaussian interference channels are derived in the presence of malicious jammers. For the Gaussian multiple-access channels with jammer, the capacity bounds coincide. In this dissertation, the adversaries can send any arbitrary signals to the channel while none of the transmitter and the receiver knows the adversarial signals' distribution.
Finally, the capacity of the standard point-to-point Gaussian fading channel in the presence of one jammer is investigated under multiple scenarios of channel state information availability, which is the knowledge of exact fading coefficients. The channel state information is always partially or fully known at the receiver to decode the message while the transmitter or the adversary may or may not have access to this information. Here, the adversary model is the same as the previous cases with no knowledge about the user's transmitted signal except possibly the knowledge of the fading path.
First of all, a standard Gaussian channel is considered in the presence of a jammer, known as a Gaussian arbitrarily-varying channel, but with list-decoding at the receiver. The receiver decodes a list of messages, instead of only one message, with the goal of the correct message being an element of the list. The capacity is characterized, and it is shown that under some transmitter's power constraints the adversary is able to suspend the communication between the legitimate users and make the capacity zero.
Next, generalized packing lemmas are introduced for Gaussian adversarial channels to achieve the capacity bounds for three Gaussian multi-user channels in the presence of adversarial jammers. Inner and outer bounds on the capacity regions of Gaussian multiple-access channels, Gaussian broadcast channels, and Gaussian interference channels are derived in the presence of malicious jammers. For the Gaussian multiple-access channels with jammer, the capacity bounds coincide. In this dissertation, the adversaries can send any arbitrary signals to the channel while none of the transmitter and the receiver knows the adversarial signals' distribution.
Finally, the capacity of the standard point-to-point Gaussian fading channel in the presence of one jammer is investigated under multiple scenarios of channel state information availability, which is the knowledge of exact fading coefficients. The channel state information is always partially or fully known at the receiver to decode the message while the transmitter or the adversary may or may not have access to this information. Here, the adversary model is the same as the previous cases with no knowledge about the user's transmitted signal except possibly the knowledge of the fading path.
ContributorsHosseinigoki, Fatemeh (Author) / Kosut, Oliver (Thesis advisor) / Zhang, Junshan (Committee member) / Sankar, Lalitha (Committee member) / Bliss, Daniel (Committee member) / Arizona State University (Publisher)
Created2019
Description
Self-control has been shown to be an important influence behind a variety of risk and protective behaviors, such as substance abuse. Although prior research points to the existence of multiple dimensions of self-control, this concept is not consistently defined and frequently only studied as a conglomerate in clinical research. The current study sought to examine how two experimental manipulations of subcomponents of self-control (motivation and self-efficacy) affect real-world consumptive behavior after accounting for executive function. Additionally, the validity and reliability of a brief state survey measure of perceived self-control capacity, internal motivation, and external motivation was tested. The goal was to examine how basic scientific principles involved in self-control translate into clinically relevant behaviors, which may inform understanding of momentary lapses in self-control behavior, potentially leading to novel prevention and intervention efforts. 94 college students completed a 1-2 hour laboratory protocol during which they completed survey and laboratory-based tasks of self-control and related behaviors, executive function, and ad libitum alcohol consumption. Results showed that the self-efficacy manipulation successfully increased perceived self-control capacity, although this did not lead to a significant reduction in consumption. The motivation manipulation neither increased motivation nor reduced consumption in this sample. However, the brief state survey measure of self-control subcomponents demonstrated strong test-retest reliability and distinction from trait self-control, demonstrating its viability for use in future research. By elucidating the relationships between specific mechanisms of self-control, laboratory-based tasks and manipulations, and real-world consumptive behaviors, prevention and intervention efforts for problems such as alcohol abuse may be tailored to the needs of the individual and made more impactful and cost-effective.
ContributorsPapova, Anna (Author) / Corbin, William R. (Thesis advisor) / Brewer, Gene (Committee member) / Karoly, Paul (Committee member) / McClure, Samuel (Committee member) / Arizona State University (Publisher)
Created2020