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- All Subjects: Educational leadership
- Creators: Arizona State University
Description
ABSTRACT The high percentage and the steady growth of Hispanic/Latino students in Arizona demand that special attention be placed on improving academic achievement and attainment. The need to support Hispanic/Latino parents in becoming meaningful positive contributors to their children's schooling continues to surface as a critical issue in school improvement efforts in many Arizona districts. American Dream Academy, part of the Center for Community Development and Civil Rights at Arizona State University, has aimed to address this critical issue. Their focus has been to change Latino parents' beliefs about, knowledge of, and behaviors related to their children's education from pre-kindergarten to the post-secondary level. The Hoover-Dempsey and Sandler model, Realizing the American Dream, for parental involvement was the basis for the design of the curriculum used by the American Dream Academy. The purpose of this study was to analyze the efficacy of the American Dream Academy in changing the beliefs, knowledge, and behaviors of parents. The data sources were demographic and pre- and post-academy surveys taken by 719 parents representing 42 Title 1 school districts throughout Maricopa County, Arizona during the spring semester of 2012. Two tailed t tests and the significant p values revealed statistically significant changes after participation in the academy for each one of the survey statement constructs, beliefs, knowledge, and behaviors. A computation of the effect sizes using Cohen's d revealed that there were moderate to large effect sizes for each of the constructs. The knowledge construct had the largest effect size. Pearson correlation coefficients revealed that the gains for each construct were positively correlated with each of the other constructs and that the relationships were statistically significant. The significant effects of the American Dream Academy's curriculum were considerable in changing parents' beliefs, knowledge, and behaviors as to pre-kindergarten and post-secondary education. Of special notice is the effect that the academy had on parents' knowledge of how to help their children as they navigate through the United States' educational system. It is recommended that school districts partner with the American Dream Academy in efforts to engage parents in meaningful participation.
ContributorsPortillo, Danelia (Author) / Spencer, Dee Ann (Thesis advisor) / Appleton, Nicholas A (Committee member) / Diaz, René X (Committee member) / Arizona State University (Publisher)
Created2013
Description
National Board Certification is an esteemed certification and professional learning and reflective opportunity for teachers. Cognitive coaching is also a method of support many teachers receive over the course of their National Board Certification journey. The certification process involves reflective practices and opportunities for teachers to think differently about their instructional decisions and overall teaching practice. This project involves teachers who are not affiliated with the National Board Certification process. The researcher provides them with reflective opportunities and components from the certification process. An analysis of qualitative and quantitative data unveil the following results. First, coaching and practices associated with the National Board Certification process benefit all teachers. In addition, qualitative data from the findings reveal that frequent and consistent reflective opportunities provided to teachers impact their awareness of content knowledge and their students' needs. The findings from this study also suggest that when teachers are given reflective opportunities, time to collaborate with others, and consistent and frequent time to work with a coach, then student achievement is positively affected.
ContributorsDiaz, Kirsten Anne (Author) / Roe, Mary (Thesis advisor) / Weber, Catherine (Committee member) / Tankersley, Karen (Committee member) / Arizona State University (Publisher)
Created2013
Description
The National Association of Community College Teacher Education Programs (NACCTEP) was established to promote the community college role in the recruitment, preparation, retention, and renewal of teachers. NACCTEP is led by a 13-member executive board consisting of community college teacher education administrators and faculty members from across the United States. Board members expressed concern that their first year consisted of them trying to learn their role as a board member including how to participate in board activities. By the time they became fully knowledgeable about their role and became more active participants, their two-year term was completed. They also indicated that initially they felt disconnected from veteran board members. To address this issue, an orientation/leadership suite was developed for new board members to assist them in transitioning from peripheral roles to full active roles. The suite included activities such as an association orientation web page, participation in monthly board conference calls, a face-to-face leadership session, and mentoring by veteran board members. The communities of practice (CoP) framework shaped this action research study and the activities of the suite were designed to foster a CoP. This action research study utilized a mixed-method research approach in which both qualitative and quantitative instruments were used to gather data. The descriptive statistics indicated that on average, new board members perceived mentoring was effective, understood their role on the board, experienced a sense of a community of practice, considered themselves as active on the board, and believed the leadership orientation suite was effective. An analysis of the qualitative data resulted in four themes: community, communication, participation, and efficacy. Overall, the findings indicated that the new board member orientation/leadership suite assisted new board members transition from peripheral roles to active leadership roles through developing a sense of community; facilitating and sustaining communication; defining, supporting, and encouraging participation; and increasing efficacy in their roles. Through the learning of their roles, the new board members became knowledgeable, comfortable, and confident in serving as board members, which facilitated their participating in the NACCTEP board's CoP.
ContributorsOstos, Ray A (Author) / Buss, Ray (Thesis advisor) / Barnett, Joshua (Committee member) / De Los Santos, Gerardo (Committee member) / Arizona State University (Publisher)
Created2013
Description
A thorough exploration of star formation necessitates observation across the electromagnetic spectrum. In particular, observations in the submillimeter and ultra-violet allow one to observe very early stage star formation and to trace the evolution from molecular cloud collapse to stellar ignition. Submillimeter observations are essential for piercing the heart of heavily obscured stellar nurseries to observe star formation in its infancy. Ultra-violet observations allow one to observe stars just after they emerge from their surrounding environment, allowing higher energy radiation to escape. To make detailed observations of early stage star formation in both spectral regimes requires state-of-the-art detector technology and instrumentation. In this dissertation, I discuss the calibration and feasibility of detectors developed by Lawrence Berkeley National Laboratory and specially processed at the Jet Propulsion Laboratory to increase their quantum efficiency at far-ultraviolet wavelengths. A cursory treatment of the delta-doping process is presented, followed by a thorough discussion of calibration procedures developed at JPL and in the Laboratory for Astronomical and Space Instrumentation at ASU. Subsequent discussion turns to a novel design for a Modular Imager Cell forming one possible basis for construction of future large focal plane arrays. I then discuss the design, fabrication, and calibration of a sounding rocket imaging system developed using the MIC and these specially processed detectors. Finally, I discuss one scientific application of sub-mm observations. I used data from the Heinrich Hertz Sub-millimeter Telescope and the Sub-Millimeter Array (SMA) to observe sub-millimeter transitions and continuum emission towards AFGL 2591. I tested the use of vibrationally excited HCN emission to probe the protostellar accretion disk structure. I measured vibrationally excited HCN line ratios in order to elucidate the appropriate excitation mechanism. I find collisional excitation to be dominant, showing the emission originates in extremely dense (n&sim10;11 cm-3), warm (T&sim1000; K) gas. Furthermore, from the line profile of the v=(0, 22d, 0) transition, I find evidence for a possible accretion disk.
ContributorsVeach, Todd Justin (Author) / Scowen, Paul A (Thesis advisor) / Groppi, Christopher E (Thesis advisor) / Beasley, Matthew N (Committee member) / Rhoads, James E (Committee member) / Windhorst, Rogier A (Committee member) / Arizona State University (Publisher)
Created2012
Description
An unrelenting need exists to improve literacy instruction in secondary schools in the United States. Reading scores, especially among minority and language minority students, as well as the economically disadvantaged, have not produced significant gains in recent years. The problem of low level reading skills in secondary grades is complicated to address, however, as many secondary teachers find themselves ill-equipped to deal with the challenges they face. Improving student achievement by integrating reading comprehension strategies into the freshman English curriculum was the ultimate goal of this innovation. A total of 15 freshman English language arts teachers and 30 freshman students participated in this 14 week action research study, which involved teaching explicit pre-, during-, and post-reading strategies during daily lessons at a large, urban high school in the Southwestern United States. Data were collected using a reading diagnostic test, focus group interviews with teachers, individual interviews with teachers and students, and teacher observations. Findings from the data suggest that professional development designed to infuse comprehension strategies through collaborative inquiry among English language arts teachers contributed to assisting students to perform better on reading diagnostic measures. Furthermore, the findings suggest that this method of professional development served to raise teachers' self-efficacy regarding literacy instruction, which, in turn, improved students' efficacy and performance as readers.
ContributorsWilliams, Jeffrey (Author) / Roe, Mary (Thesis advisor) / Weber, Catherine (Committee member) / Allen, Althe (Committee member) / Arizona State University (Publisher)
Created2013
Description
Educational Leadership is inherent of many qualities. Individuals who possess leadership stand apart from the mainstream population in general society and in any organization, thus they are change agents who influence others by their uniqueness and dynamism. The art of leadership is challenging, but meaningful, and purposeful as the focus is implementation of consistent affective and effective practices at all levels to assure achievable outcomes no matter the organization type. A leader's calling is rewarding and the journey is that of making and sustaining change through influence. The purpose of this study centered on the relationship factor of educational leadership especially the dynamics between the principal and the teacher and what constructs affect this relationship to affect principal effectiveness. The methodology employed a quantitative format and consisted of a 20 question survey sent to one school district's teachers (N=465) over a 3 month window. The summaries of results were presented in two formats: Raw (exactly how teachers answered) and a Cross-tabulation (Age & Licensure). The findings of the study yielded attitudes and perspectives of teachers regarding valuable information on leadership behaviors, styles, and practices that teachers believe were relevant to principal effectiveness. The most noteworthy aspect gleaned from this study was the people factor wherein relationships are a key factor to a leader's success in any realm that one leads.
ContributorsMorris, Edie R (Author) / Appleton, Nicholas (Thesis advisor) / Wauneka, Jacquelyne (Committee member) / Spencer, Dee (Committee member) / Arizona State University (Publisher)
Created2012
Description
Universities have been increasingly engaged in international collaborations with peer institutions overseas. In recent years, Confucius Institutes have emerged as a new model of collaboration between American universities and Chinese universities. In an attempt to identify factors contributing to successful international university collaborations, this study used the case study method and focused on one Confucius Institute between MMU, an American University, and ZZU, a Chinese university, and intended to identify factors leading to the success of the MMU-ZZU Confucius Institute collaboration. The study investigated the MMU-ZZU Confucius Institute collaboration within the framework of the MMU-ZZU institutional partnership. Based on data collected from the institutional documents, interviews, site visits and news reports, this study examined the experiences and perceptions of the university's stakeholders involved in creating and sustaining this particular Confucius Institute, including stakeholders at the program level, at the college level, and at the institutional level both at MMU and ZZU. Using the glonacal agency heuristics framework, the MMU-ZZU Confucius Institute collaboration was a result of joint forces of stakeholders at the program level, at the college level, and at the institutional level from ZZU and MMU. Stakeholders, no matter what level they are and which institution they are affiliated with, had to navigate through the significant differences between them to develop synergy to be successful. Synergy, including vertical synergy developed among stakeholders within each institution and horizontal synergy developed among stakeholders between institutions, turned out to be critical to the success of the MMU-ZZU CI. The study concluded that synergy in leadership, organizational contexts, stakeholders' resources, and the synergy in the MMU-ZZU Confucius Institute collaboration and the MMU-ZZU institutional partnership, led to the success of the MMU-ZZU Confucius Institute collaboration.
ContributorsLi, Mengying (Author) / De Los Santos Jr., Alfredo G (Thesis advisor) / Wiley, Terrence (Thesis advisor) / Fischman, Gustavo (Committee member) / Arizona State University (Publisher)
Created2012
Description
The only elements that were made in significant quantity during the Big Bang were hydrogen and helium, and to a lesser extent lithium. Depending on the initial mass of a star, it may eject some or all of the unique, newly formed elements into the interstellar medium. The enriched gas later collapses into new stars, which are able to form heavier elements due to the presence of the new elements. When we observe the abundances in a stellar regions, we are able to glean the astrophysical phenomena that occurred prior to its formation. I compile spectroscopic abundance data from 49 literature sources for 46 elements across 2836 stars in the solar neighborhood, within 150 pc of the Sun, to produce the Hypatia Catalog. I analyze the variability of the spread in abundance measurements reported for the same star by different surveys, the corresponding stellar atmosphere parameters adopted by various abundance determination methods, and the effect of normalizing all abundances to the same solar scale. The resulting abundance ratios [X/Fe] as a function of [Fe/H] are consistent with stellar nucleosynthetic processes and known Galactic thin-disk trends. I analyze the element abundances for 204 known exoplanet host-stars. In general, I find that exoplanet host-stars are not enriched more than the surrounding population of stars, with the exception of iron. I examine the stellar abundances with respect to both stellar and planetary physical properties, such as orbital period, eccentricity, planetary mass, stellar mass, and stellar color. My data confirms that exoplanet hosts are enriched in [Fe/H] but not in the refractory elements, per the self-enrichment theory for stellar composition. Lastly, I apply the Hypatia Catalog to the Catalog of Potentially Habitable Stellar Systems in order to investigate the abundances in the 1224 overlapping stars. By looking at stars similar to the Sun with respect to six bio-essential elements, I created maps that have located two ``habitability windows'' on the sky: (20.6hr, -4.8deg) and (22.6hr, -48.5deg). These windows may be of use in future targeted or beamed searches.
ContributorsHinkel, Natalie R (Author) / Timmes, Frank X (Thesis advisor) / Anbar, Ariel (Committee member) / Patience, Jennifer (Committee member) / Shumway, John (Committee member) / Young, Patrick (Committee member) / Arizona State University (Publisher)
Created2012
Description
Numerical simulations are very helpful in understanding the physics of the formation of structure and galaxies. However, it is sometimes difficult to interpret model data with respect to observations, partly due to the difficulties and background noise inherent to observation. The goal, here, is to attempt to bridge this gap between simulation and observation by rendering the model output in image format which is then processed by tools commonly used in observational astronomy. Images are synthesized in various filters by folding the output of cosmological simulations of gasdynamics with star-formation and dark matter with the Bruzual- Charlot stellar population synthesis models. A variation of the Virgo-Gadget numerical simulation code is used with the hybrid gas and stellar formation models of Springel and Hernquist (2003). Outputs taken at various redshifts are stacked to create a synthetic view of the simulated star clusters. Source Extractor (SExtractor) is used to find groupings of stellar populations which are considered as galaxies or galaxy building blocks and photometry used to estimate the rest frame luminosities and distribution functions. With further refinements, this is expected to provide support for missions such as JWST, as well as to probe what additional physics are needed to model the data. The results show good agreement in many respects with observed properties of the galaxy luminosity function (LF) over a wide range of high redshifts. In particular, the slope (alpha) when fitted to the standard Schechter function shows excellent agreement both in value and evolution with redshift, when compared with observation. Discrepancies of other properties with observation are seen to be a result of limitations of the simulation and additional feedback mechanisms which are needed.
ContributorsMorgan, Robert (Author) / Windhorst, Rogier A (Thesis advisor) / Scannapieco, Evan (Committee member) / Rhoads, James (Committee member) / Gardner, Carl (Committee member) / Belitsky, Andrei (Committee member) / Arizona State University (Publisher)
Created2012
Description
Understanding the temperature structure of protoplanetary disks (PPDs) is paramount to modeling disk evolution and future planet formation. PPDs around T Tauri stars have two primary heating sources, protostellar irradiation, which depends on the flaring of the disk, and accretional heating as viscous coupling between annuli dissipate energy. I have written a "1.5-D" radiative transfer code to calculate disk temperatures assuming hydrostatic and radiative equilibrium. The model solves for the temperature at all locations simultaneously using Rybicki's method, converges rapidly at high optical depth, and retains full frequency dependence. The likely cause of accretional heating in PPDs is the magnetorotational instability (MRI), which acts where gas ionization is sufficiently high for gas to couple to the magnetic field. This will occur in surface layers of the disk, leaving the interior portions of the disk inactive ("dead zone"). I calculate temperatures in PPDs undergoing such "layered accretion." Since the accretional heating is concentrated far from the midplane, temperatures in the disk's interior are lower than in PPDs modeled with vertically uniform accretion. The method is used to study for the first time disks evolving via the magnetorotational instability, which operates primarily in surface layers. I find that temperatures in layered accretion disks do not significantly differ from those of "passive disks," where no accretional heating exists. Emergent spectra are insensitive to active layer thickness, making it difficult to observationally identify disks undergoing layered vs. uniform accretion. I also calculate the ionization chemistry in PPDs, using an ionization network including multiple charge states of dust grains. Combined with a criterion for the onset of the MRI, I calculate where the MRI can be initiated and the extent of dead zones in PPDs. After accounting for feedback between temperature and active layer thickness, I find the surface density of the actively accreting layers falls rapidly with distance from the protostar, leading to a net outward flow of mass from ~0.1 to 3 AU. The clearing out of the innermost zones is possibly consistent with the observed behavior of recently discovered "transition disks."
ContributorsLesniak, Michael V., III (Author) / Desch, Steven J. (Thesis advisor) / Scannapieco, Evan (Committee member) / Timmes, Francis (Committee member) / Starrfield, Sumner (Committee member) / Belitsky, Andrei (Committee member) / Arizona State University (Publisher)
Created2012