Your search
Results 1,832 resources
-
Photovoltaic systems have proven to be one of the most widely used renewable energies and the best replacement for conventional energy. Yet, their non-linear nature remains a challenge when it comes to extracting maximum power from photovoltaic modules. Therefore, in this work, a nonlinear PID controller has been used to meet the requirements of the photovoltaic system. In addition, to improve system performance and response, metaheuristic search algorithms were introduced into the tuning process of both the NPID controller and conventional PID controller parameters in order to compare them. The use of Artificial Intelligence to fine-tune the controller parameters will enable the optimum values of proportional, integral, derivative and nonlinear gains to be determined as system condition change. Finally, a comparison between the algorithms applied is conducted in terms of efficiency, rise time, settling time and overshoot as well as the overall system stability.
-
Abstract There is an “underrepresentation problem” in philosophy departments and journals. Empirical data suggest that while we have seen some improvements since the 1990s, the rate of change has slowed down. Some posit that philosophy has disciplinary norms making it uniquely resistant to change. We present results from an empirical case study of a philosophy department that achieved and maintained male-female gender parity among its faculty as early as 2014. Our analysis extends beyond matters of gender parity because that is only one, albeit important, dimension of inclusion. We build from the study to reflect on strategies that may catalyze change.
-
Using a dynamic panel dataset of 150 countries for the period of 2006-2018 and a two-step system GMM estimation model, this paper shows that natural resources have a positive effect on economic development while holding corruption constant. Our findings support the notion that natural resources have a positive effect on the economy of a nation. When a country has less corruption, it improves the appropriation of economic gains from natural resources which serves as natural capital that would drive further capital accumulation and further development. We also find that physical capital, human capital, and freedom from corruption show strong positive effects on economic development, controlling for other economic and institutional variables.
-
Purpose: In the United States, 15 states maintain policies and 25 states represent some level of edTPA affiliation. This study investigated how the edTPA was integrated and aligned into different physical education teacher education (PETE) programs in New Jersey. It also sought to understand teacher educators’ perceptions and experiences in preparing teacher candidates for the edTPA. Methods: This study utilized three data sources: semistructured interviews (n = 4), one focus group interview (n = 1), and documents (n = 17). Data analysis reflected a conventional approach toward qualitative content analysis. Results: In analyzing the data, four themes were established: (a) benefits and drawbacks of edTPA in PETE, (b) goals and success of edTPA in PETE, (c) integrating edTPA into PETE—macro- and microperspectives, and (d) analytic insights into edTPA and future recommendations. Discussion/Conclusion: In states requiring the edTPA, early exposure, scaffolding, curriculum mapping, and a shared mission and vision are critical. In states not requiring the edTPA, programs may want to consider indicators of performance, such as artifacts, reports, elements of the edTPA, university-based assessments, or a portfolio. Regardless of the type of assessment, “a” performance-based assessment may help to determine teacher candidates’ ability to plan, instruct, assess, and reflect.
-
Narrative language samples can be used to measure language development in children, but research on narrative development in deaf and hard-of-hearing (DHH) children is scarce, limiting knowledge of developmental stages and best practices for collection and analysis. This scoping review included 39 articles that explored recent methodologies and achievements in oral or signed narratives of DHH children, including comparisons with hearing peers and within-group analyses of early auditory experience, device use, and other measures. Articles featured DHH participants aged < 4 to 18 years, varying in device use, communication modalities, and educational settings. Most studies utilized story generation tasks with early elementary-aged children and analyzed either microstructure or macrostructure. Mixed results in comparisons with hearing children emphasized the need to consider individual differences (e.g., speech perception and age of spoken language access) in DHH narrative assessments. Findings also suggest that comparability across studies would be improved by more consistent terminology and procedures in narrative collection/analysis.
-
This study aimed to find out the effects of demographic variable i.e. gender, age, group of studies, GPA etc. on level of academic integrity among Pakistani students. The design of the study is quantitative in nature, in which the survey research method was employed to gather data from the respondents. A self-reported questionnaire was adapted on the basis of previously developed and validated questionnaire, with the consent of the authors. The developed scale was validated with the help of experts and pilot tested. Multilevel stratified convenience sampling technique was used to collect data from 4 provinces and federal area of Pakistan. The collected data was analyzed by using SPSS 16.0 version
-
<h2>Abstract</h2><h3>Background</h3> Patients presenting to the emergency department (ED) following nonfatal opioid overdose represent a high-risk population with 5 % of patients dying within a year of the index visit. <h3>Objective</h3> To evaluate subsequent overdose and death before and after the implementation of an ED discharge naloxone program. <h3>Methods</h3> This was a retrospective cohort study of ED patients who presented at the Virginia Commonwealth University Health ED with an Opioid Use Disorder (OUD) chief complaint before and after a discharge naloxone program. The pre-naloxone cohort was consecutive ED OUD patients from August 15, 2021, to August 14, 2022, and the post-naloxone cohort from August 15, 2022, to August 14, 2023. The outcomes were subsequent overdose, ED visit to same hospital (VCU), and death within six months of the index visit. <h3>Results</h3> In total, 1,053 patients were included, of which 529 were in the pre-naloxone cohort and 524 patients in the post-naloxone cohort. The mean age was 44.2 years (SD = 14.0) and 69 % were males. There was a reduction in overdose requiring ED visiting (subsequent ED overdose) and death (4.6 % vs 9.2 % p = 0.03 and 2.0 % vs 5.6 % p = 0.02 respectively) in the post-naloxone cohort compared to the pre-naloxone cohort. After adjusting for sociodemographic and clinical factors, there was a 48 % reduction in the risk of subsequent ED overdose (RR = 0.52, 95 % CI: 0.27, 1.02) and a 63 % reduction in the risk of death (RR = 0.37, 95 % CI: 0.14, 0.95). <h3>Conclusion</h3> Implementing an ED take-home naloxone program was associated with a reduction in subsequent overdose and death at six months.
-
In the United States (US) kindergarten through twelfth-grade public school system, the classroom library has come to be a critical part of literacy instruction within the language arts classroom. This fact is especially true in the middle school grade levels (grades five through eight), where reading volume begins to rapidly increase. Additionally, a developmental norm for students within this age range includes a growing sense of independence and choice, as well as a desire to share and voice opinions. Classroom libraries have come to be tools that are used regularly and are heavily influential on the way that students grow to perceive themselves, the world around them, and the way they fit into that world. However, classroom libraries have remained stagnant and underrepresent the diverse populations of the students in those classrooms. This article aims to connect deep reflective thinking with anti-oppressive and transformative learning theories, exploring how these frameworks can be used to problematize current practices in classroom libraries. Through a content analysis of what is seen as deep and critical thinking practices and reflective thinking practices, anti-oppressive and transformative learning theories can be linked to foster a social justice classroom culture within US public middle school language arts classrooms. © 2025 Common Ground Research Networks. All rights reserved.
-
We present an investigation into the rotation and stellar activity of four fully convective M dwarf “twin” wide binaries. Components in each pair have (1) astrometry confirming they are common-proper-motion binaries, (2) Gaia BP, RP, and 2MASS J, H, and K s magnitudes matching within 0.10 mag, and (3) presumably the same age and composition. We report long-term photometry, rotation periods, multiepoch Hα equivalent widths, X-ray luminosities, time series radial velocities, and speckle observations for all components. Although it might be expected for the twin components to have matching magnetic attributes, this is not the case. Decade-long photometry of GJ 1183 AB indicates consistently higher spot activity on A than B, a trend matched by A appearing 58% ± 9% stronger in L X and 26% ± 9% stronger in Hα on average—this is despite similar rotation periods of A = 0.86 day and B = 0.68 day, thereby informing the range in activity for otherwise identical and similarly rotating M dwarfs. The young β Pic Moving Group member 2MA 0201+0117 AB displays a consistently more active B component that is 3.6 ± 0.5 times stronger in L X and 52% ± 19% stronger in Hα on average, with distinct rotation at A = 6.01 days and B = 3.30 days. Finally, NLTT 44989 AB displays remarkable differences with implications for spindown evolution—B has sustained Hα emission while A shows absorption, and B is ≥39 ± 4 times stronger in L X, presumably stemming from the surprisingly different rotation periods of A = 38 days and B = 6.55 days. The last system, KX Com, has an unresolved radial velocity companion, and is therefore not a twin system.
-
Shallow mantle processes such as edge-driven convection are thought to play an important role in shaping the passive margin setting. Previous geophysical investigations of northern New England suggest this process is likely operating beneath this portion of the eastern North American margin today. In western Vermont and eastern New York, USA, Early Cretaceous magmatism dated at ca. 140–130 Ma in the Burlington lobe and at ca. 110–100 Ma in the Taconic lobe of the New England–Quebec igneous province may represent the upper crustal expression of edge-driven convection operating beneath the eastern North American margin in the geologic past. This investigation addresses the potential relationship between these two episodes of magmatism and upper crustal deformation in northern New England through paleostress analysis of Early Cretaceous sheet intrusions and mesoscale normal faults, and geochemical analysis of sheet intrusions. The two episodes of magmatism are geochemically similar, display typical characteristics of intraplate alkaline magmatism, and are likely the product of a common source. Paleostress analysis and crosscutting relationships indicate that Burlington lobe magmatism was associated with a subhorizontal N–S extensional stress field, and Taconic lobe magmatism was associated with a subhorizontal NW–SE extensional stress field. Both stress fields represent short-term perturbations to the regional Early Cretaceous subhorizontal NE–SW extensional stress field. Each perturbation coincided with and likely continued following magmatism. The magmatism, geographic and temporal scale of the stress field changes, and return to regional subhorizontal NE–SW extension following these events are consistent with the periodic nature of edge-driven convection and associated small-scale delamination events. This field-based documentation of intraplate magmatism and its association with short-term changes in the stress field improves our understanding of the upper crustal expression of edge-driven convection at passive margins.
-
Constructing a personal narrative and consolidating identity is an ongoing process that becomes pressing in the face of mortality. The current pilot study examined the process of life review in a sample of older people, specifically examining the effects of participation in a memoir course on wisdom, identity, and well-being. We hypothesized that wisdom, identity fidelity and coherence, and subjective well-being would increase for those in the memoir group compared to a control. Eighteen elderly individuals from two senior retirement communities were randomly assigned to participate in weekly classes, for four weeks, either to work on a memoir or discuss films (control group). After engaging in the process of organizing their life story and writing about important memories, the nine individuals in the memoir group scored significantly higher on self-report measures of wise reminiscence, identity fidelity, and subjective well-being compared to those in the control group. Furthermore, exploratory analyses found that wise reminiscence statistically mediated relationships between the memoir condition and the outcome measures of identity fidelity, identity coherence, and subjective well-being. These findings point to the benefits of memoir writing for positive aging as well as potential mechanisms underlying its effectiveness.
-
Do not walk away from this burgeoning hope of heat and dryness.
-
From a snowbank I watched the squirrel run.
-
Grey Sparrow Press, in this landmark book, cherishes the voices of national writing treasures published over ten years; Robert Bly, Robert Wexelblatt, Michael C. Keith, Jules Nyquist, Khem Aryal, Marie Sheppard Williams [posthumously,] Doug Holder, Momila Joshi, William Woolfitt, Thomas R. Smith, M.J. Iuppa, LB Chhetri, John Roche, and Bhisma Upreti to name a few. Grey Sparrow Press was formed as a non-profit 501[c]3 on May 11, 2009.
-
Stock market forecasting is an essential factor in the daily operations of many companies and individuals. However, the complex and nonlinear nature of the stock market and the unpredictable variations in factors affecting stock prices present significant challenges in accurate forecasting. To address this, we employ four model-based metaheuristic search algorithms (MHs), namely the Crow Search Algorithm (CSA), Particle Swarm Optimizer (PSO), Gray Wolf Optimizer (GWO), and Dandelion Optimizer (DO), to estimate the parameters of stock market prices models. The data utilized in our experiments are extracted from the widely recognized stock index of Standard & Poor's 500 (S&P 500), that serves as a representative benchmark for the United States stock market. Our findings demonstrate that the CSA outperforms other MHs by providing the best combination of parameters for modeling stock market prices. The optimized parameters for the CSA model yielded Variance-Account-For (VAF) values of 97.846% in the training set and 93.483% in the testing set. This suggests that CSA offers promising capabilities for enhancing the accuracy and effectiveness of stock market forecasting models. © (2024), (Research Institute of Intelligent Computer Systems). All rights reserved.
-
Background: Social determinants of health account for racial inequities in breastfeeding rates in the United States. There is a gap in the role of neighborhood socioeconomic status (NSES) as it relates to breastfeeding disparities. Methods: Using longitudinal data from the Black Women’s Health Study, we assessed associations of NSES with breastfeeding initiation and duration in a cohort of primiparous U.S. Black women. We also explored associations within strata of important economic indicators, including education, occupation, and marital status. Results: Breastfeeding initiation ( n = 2,705) increased with NSES quartile, from 75.2% in the lowest quartile to 88.3% in the highest quartile ( p < 0.0001). Compared with women living in the highest NSES quartile, those in the lowest quartile had a 41% (odds ratio: 0.59 [95% confidence interval: 0.43, 0.81]) decreased odds of initiating breastfeeding. For breastfeeding duration ( n = 2,172), women residing in NSES quartiles 1–3 were significantly less likely ( p < 0.0001) to breastfeed (44.4%) for 6+ months compared with those living in the highest quartile (62.8%). Adjusted relative risks for those in quartiles 1–3 compared with 4 (highest) were 0.63 (0.45, 0.87), 0.50 (0.37, 0.68), and 0.64 (0.47, 0.86), respectively ( p = 0.0001). There was no statistically significant evidence of effect modification by education, occupation, marital status, and region ( P interaction = >0.05). Conclusion: Living in a lower NSES environment was associated with reduced breastfeeding initiation and duration compared with a higher NSES environment. Research is needed to understand the mechanisms by which neighborhood-level factors influence breastfeeding initiation and duration for Black women in the United States.
Explore
Department
- Academic Affairs (20)
- Accounting (13)
- Administration (4)
- Anthropology (30)
- Art (11)
- Biology (51)
- Business Information Systems (16)
- Business (School of) (4)
- Chemistry (26)
- Communication Disorders (41)
- Communication, Media, and Screen Studies (15)
- Computer Science (132)
- Counseling and School Psychology (21)
- Curriculum and Learning (30)
- Diversity and Equity (Office of) (9)
- Earth Science (17)
- Economics (37)
- Education (College of) (6)
- Educational Leadership and Policy Studies (34)
- English (66)
- Environment, Geography and Marine Sciences (42)
- Facilities (1)
- Finance (20)
- First Year Experience (2)
- Graduate and Professional Studies (School of) (12)
- Health and Human Services (College of) (52)
- Health and Movement Sciences (91)
- Healthcare Systems and Innovation (10)
- History (46)
- Information and Library Science (41)
- Integrated Communications and Marketing (Office of) (1)
- Journalism (2)
- Judaic Studies (8)
- Library (57)
- Management and International Business (75)
- Marketing (36)
- Marriage and Family Therapy (7)
- Mathematics (43)
- Music (3)
- Nursing (83)
- Philosophy (30)
- Physics (216)
- Political Science (16)
- Psychology (55)
- Public Health (111)
- Recreation, Tourism and Sport Management (40)
- Research & Innovation (Division of) (1)
- Residence Life (1)
- Social Work (92)
- Sociology (22)
- Special Education (63)
- Student Success (1)
- Theatre (3)
- Unidentified (5)
- Women's and Gender Studies (3)
- World Languages and Literatures (37)
Resource type
- Blog Post (27)
- Book (116)
- Book Section (222)
- Conference Paper (86)
- Dataset (4)
- Document (2)
- Encyclopedia Article (1)
- Journal Article (1,328)
- Magazine Article (17)
- Newspaper Article (4)
- Patent (1)
- Preprint (5)
- Presentation (10)
- Report (3)
- Thesis (2)
- Video Recording (1)
- Web Page (3)
Publication year
Resource language
- Chinese (2)
- chinese Traditional Chinese (1)
- English (1,250)
- French (2)
- German (2)
- Latvian (1)
- Portuguese (1)
- Spanish (1)