Digital Commons Network^™

Design And Application Of Bds Visual Simulation Teaching Platform Based On Cesium, Liguo Lu, Yulin Cai, Tangting Wu, Canhui Lin

Journal of System Simulation

Abstract: The deep development of the BeiDou navigation satellite system(BDS) cannot be separated from the support of corresponding talent education, especially the development of new digital resources and tools. A visual simulation teaching platform for BDS was designed based on open source Cesium engine library to address issues such as the large and complex size of the BDS project, the unreachable space environment, and the difficult understanding of principles and concepts. The platform adopted a B/S architecture to achieve visual simulation of course content such as orbit cognition, orbit calculation, constellation simulation, service performance, and satellite links. Teaching applications have …

Research On Uav Path Planning Method Based On Collision Free Trajectory, Jun Xie, Qi Zhang, Yanyun Peng, Haonan Shi, Dongyang Li, Xi Liu

Journal of System Simulation

Abstract: In view of the problems of poor quality, long time consumption, and low efficiency of the autonomous path planning method for unmanned aerial vehicles, a path planning method for unmanned aerial vehicles based on a collision-free trajectory was proposed. Under the premise of uncertainty, the time-related virtual points and collision threshold were set; the obstacle was modeled as a rectangle; the interest points around the rectangle were defined. The uncertainty optimization model between the unmanned aerial vehicles and the obstacle was established, so as to obtain the allowable edge of the collision-free trajectory of the unmanned aerial vehicles. The …

Construction Approach Of Llm-Empowered Tactical Wargame Decision-Making Agents, Dayong Liu, Zhiming Dong, Qisheng Guo, Ang Gao, Xuehuan Qiu

Journal of System Simulation

Abstract: Decision-making agents are critical enablers for implementing human-machine, machinemachine, and hybrid human-machine adversarial interaction in tactical wargaming, where the intelligence level of the agent is crucial. To address the limitations of traditional decision agents such as insufficient adaptability, simplistic strategies, and high construction costs, a fusion decision framework driven by the large and small models was proposed. It specifically investigated the fusion approach of large language models with conventional decision-making agent construction approaches, including behavior trees, finite state machines, heuristic search, and deep reinforcement learning. New ideas and technical pathways are provided for the construction of tactical wargame …

Research On Visual Place Recognition Algorithms For Complex Urban Environments, Peijin Liu, Minxin Zhang, Lin He, Yige Sun, Tingqi Su

Journal of System Simulation

Abstract: Dynamic factors such as traffic flow and crowd density in complex urban environments reduce the accuracy of visual place recognition (VPR) algorithms. To solve these problems, a semantic-guided visual place recognition (SG-VPR) algorithm was proposed. A semantic-guided feature suppression module was designed. A semantic-guided module and feature suppression layer were constructed to reduce the dynamic object interference and more accurately extract the key static features. An adaptive triplet margin loss function (ATML) was proposed by improving the traditional triplet margin loss. The margins were adaptively adjusted according to the sample distribution, solving the problem of suboptimal solution convergence …

Silicosis Evaluation Among Native Spanish-Speaking Workers: An Exploratory Pilot Survey Of Occupational Medicine Providers, Caroline Olsen

Undergraduate Honors Theses

Silicosis is a lung disease caused by inhalation of respirable silica particles. Silicosis is usually characterized by high occupational exposure to silica in industries like mining, sandblasting, construction, and stone fabrication. Recent research showing increasing rates of silicosis among native Spanish-speaking workers demonstrates the need for improved silicosis diagnosis and patient education. While research has been done to understand the epidemiological distribution of silicosis and native Spanish-speaking workers, there has been limited research evaluating occupational medicine providers’ clinical practices related to the diagnosis of silicosis among this population.

This exploratory pilot study evaluated occupational medicine providers’ experiences related to silicosis …

Invitation To Fractional Calculus, Lyubomir I. Boyadzhiev

Open Educational Resources

These lecture notes are designed to provide the students who wish to become familiar with the basic concepts and methods of the Fractional Calculus (FC). The following features can be pointed out:  This text is prepared to be easily read and understood by students making their first steps into this topic. The lecture notes do not presume a background beyond standard college calculus curricula. Readers needing extra help will find tools for bringing their mathematical maturity up in the references and companion links;  The writing style is aimed to be direct and pragmatic. Precise mathematical language is used without excessive …

Latest Sightings Of The Striped Hyena In North Africa: Major Threats And Conservation Actions, Abderrazak El Alami, Abderrazzak Fattah, Ilyas El Alami, Ziad El Alami

Turkish Journal of Zoology

The striped hyena (Hyaena hyaena) is widely distributed across the northern half of Africa, the Middle East, the Arabian Peninsula, and parts of Asia. However,  numerous studies indicate that this carnivore is in decline, and it is currently classified  as near threatened on the IUCN Red List of threatened species. In North  Africa, the Hyaena hyaena barbara subspecies has been extirpated from many  areas. This article summarizes data collected from observations of the striped hyena  in North Africa between 2004 and 2024. Among the 418 striped hyenas recorded in  North Africa between 2004 and 2024, 18.4% (n = 77) were …

Book Review: Tradecraft, Tactics, And Dirty Tricks: Russian Intelligence And Putin’S Secret War, Thomas W. Spahr

Parameters Bookshelf – Online Book Reviews

Author: Sean M. Wiswesser

Reviewed by: Dr. Thomas W. Spahr, Francis De Serio Chair of Strategic and Theater Intelligence, US Army War College

A veteran intelligence practitioner exposes the vulnerabilities, contradictions, and hidden conflicts shaping modern Russian espionage—and what they mean for Western security.

Depressive Symptoms, Campus Connectedness, And Campus Climate Related To Sexual Violence And Misconduct, Stephanie A. Navarro Silvera, Amanda S. Birnbaum, Eva S. Goldfarb, Ranju Mainali, Lisa D. Lieberman

Department of Public Health Scholarship and Creative Works

Depression, although a consequence of sexual violence, has not been studied in the context of college students’ views of campus sexual violence climate. Depression is one of the most prevalent and impairing mental health concerns among college students and has well-established links to sexual violence victimization; therefore, it serves as a theoretically and clinically meaningful focal outcome. Therefore, we assessed perceptions of institutional climate in the context of self-reported depression. Undergraduates (n = 716) reported perceptions and experiences of campus sexual violence and misconduct, connectedness, attitude, and depressive symptoms in an online survey. More than a third of participants reported …

Encouraging A United Response: A Systematic Review And Mixed-Methods Collaborative Evaluation Of Co-Responder Model Effectiveness In Florida, Kelsey Greenfield

USF Tampa Graduate Theses and Dissertations

Even before the deinstitutionalization movement caused the influx of state hospital patients into communities ill-prepared to navigate their needs, law enforcement has been responsible for responding to persons in crisis (PIC) due to mental illness. In response to the high rates of incarceration for persons with mental illness (PMI), a growing number of law enforcement agencies have adopted diversion strategies referred to as police-mental health collaboration (PMHC) models to divert PMI away from the criminal justice system and towards community mental health services. Despite nearly forty years of research, there are still considerable knowledge gaps regarding who benefits from PMHCs …

Master’S Students: Experiences, Transitions, And Needs In The College Of Education, Brandi L. Sanchez

USF Tampa Graduate Theses and Dissertations

This qualitative case study explores the experiences, transitions, and needs of first-year master’s students in education. Guided by Schlossberg’s Transition Model, the study examines how students perceive shifts in academic rigor, workload, and the increased self-direction required in graduate education. The case study used three data collection methods: semi-structured interviews, document analysis, and observations that provided insights into the student perception of master’s students studying education’s experience, transition, and needs. Additionally, this case study enabled exploration of the research questions across six types of master’s programs within the College of Education. By focusing on the first year of graduate study, …

The Influence Of Alongside For Educators, An Ai Wellness Tool, On Educator Well-Being, Amanda Grell

Doctorate in Education

Educator well-being has become an urgent concern in K-12 education, as educators continue to experience chronic stress, emotional exhaustion, and high levels of burnout. Despite these challenges, few school-based interventions offer timely, individualized support that addresses educators’ real-time emotional needs. This mixed-methods study examined the influence of the Alongside for Educators application on educator well-being within middle and high school settings. The purpose of this research was to explore how the tool supported educators across the Coping-Competence-Context (3Cs) framework, including experiences with the application, contextual factors shaping engagement, and changes in well-being. Qualitative findings from 10 interviews revealed that educators …

Key Problems Of Intent Recognition Research: A Survey On Activity, Plan And Goal Recognition, Yi Zhang, Kai Xu, Shuilin Li, Dejun Chen, Yunxiu Zeng, Yong Peng

Journal of System Simulation

Abstract: With the development of artificial intelligence technology, realizing intent recognition in human-computer interaction has become one of the key challenges. In this paper, the current research status of three fields was systematically sorted out, namely activity recognition, plan recognition, and goal recognition, and the progress from the problem proposal to the current development was analyzed. The main research approaches in each field were reviewed, and a survey of research on activity recognition, a development overview of plan recognition, and a retrospective analysis of hotspots in goal recognition were conducted. This general view of the problem helped to clarify …

Implementation Of Sustainable Development Goals In Higher Education, Adam Mehmet Kilic

Walden Dissertations and Doctoral Studies

The problem that was addressed through this study is that higher education institutions play a critical role in advancing the United Nations sustainable development goals (SDGs), yet limited research offers guidance on how institutions can implement the SDGs through systems-oriented strategic planning. Guided by Hofstede’s cultural dimensions and Senge’s systems thinking, the purpose of this qualitative study was to examine the integration of SDGs into its policies and practices to inform effective, transformative approaches at a private Texas university. For this case study design, data were collected through 11 semistructured interviews, a focus group with five administrators and faculty, and …

Sustainable Guiding Framework Of The Egyptian Rural Development Initiative (Hayah Karima), Eman Badawy Ahmed

Mansoura Engineering Journal

The Hayah Karima initiative launches to improve the standard of living for the most needy community groups across the Egyptian countryside, and it also contributes to improving the quality of services provided to the neediest villages. The research aims to propose a guiding framework for sustainability in villages of the Hayah Karima Initiative to achieve Egypt’s Sustainable Vision 2030. To achieve the goal, the research will study the goals, strategies, and principles of the Hayah Karima Initiative, the Egypt Vision 2030, COP 27, the sustainability evaluation criteria, and the Green Villages Initiative. Consequentially, in addition to A questionnaire to measure …

How Big Is Copyright’S Second Bite?: An Empirical Assessment Of Copyright Reversion, Christopher Buccafusco, Brent Lutes, S. Sean Tu

Duke Law Journal

Copyright law is unusual. Unlike virtually every other area of U.S. law, the Copyright Act allows people to change their minds and unilaterally cancel otherwise valid contracts. Thirty-five years after transferring or licensing their copyrights to others, authors—or their heirs—can terminate the grant for any reason, and the copyright reverts to its original owners. These termination of transfer provisions aren’t just unusual as a matter of law generally; they are also atypical for copyright law. While most of copyright law is justified on the grounds that it improves social welfare, these provisions are explicitly based on redistributive concerns—giving poorly situated …

Eliminating The Fix In Vertical Merger Enforcement, Jessica Breznick

Duke Law Journal

As antitrust enforcers have increased their efforts to block vertical mergers, courts have been forced to grapple with the challenges of predicting the anticompetitive effects of vertical integration, as required by Section 7 of the Clayton Act. Merging parties have complicated this task by “litigating the fix”—proffering evidence that they have designed measures to prevent anticompetitive outcomes outside the consent decree process. Because the anticompetitive problems of vertical mergers do not lend themselves to structural relief, vertically-merging parties have instead proposed fixes aimed at constraining the parties’ post-merger conduct. Such conduct fixes come in the form of contractual agreements with …

Explaining Variability In Employee Perceptions Of Hr Practices In Strategic Hrm Research: An Integrative Review And Future Outlook, Jeske Van Beurden, Susanne Beijer, Kaifeng Jiang, Karina Van De Voorde, Anthony Nyberg

Faculty Publications

Employee perceptions of human resource (HR) practices have become a central focus in strategic human resource management(HRM) research due to their impact on individual and organizational outcomes. Recent studies highlight the importance of un-derstanding how these perceptions are formed, what they encompass, and why they vary across employees. This special issue ofHuman Resource Management aims to advance this evolving area of research by focusing on variability in employee perceptionsof HR practices. We review the current literature on employee perceptions of HR practices, including (1) theoretical and concep-tual clarity of the employee perceptions of HR practices construct, (2) antecedents of these …

Laughing Doves Use Human Structures In Fragmented Habitats To Improve Breeding Success, Humphrey Tietaah Ankuor, Ziblim Abukari Imoro, Timothy Khan Aikins

Cities and the Environment (CATE)

The effects of urbanisation on our natural environment have led to a significant shift in ecosystem structure and processes, posing threats to many wildlife species. However other species adapts to urban settings exploiting food and nesting opportunities that humans provide. This study identified and mapped Laughing Dove Streptopelia senegalensis nests in human structures and trees within in an urban setting. The study characterised the nesting site selection, nest materials choices, and breeding success in human structures and trees. The results show that majority (107 nests, 86%) of the Laughing Dove nests were in human structures with only 14% (16 nests) …

Using Spiderwebs To Capture Airborne Environmental Dna (Edna) To Detect Animal Biodiversity In An Urban Park, Sabriya Ann Seid, Leonardo Gonzalez-Smith, Josephine Campos, Demian A. Willette

Cities and the Environment (CATE)

Environmental DNA (eDNA) is the genetic material shed by organisms in the environment. It has emerged as a powerful resource for assessing biodiversity, particularly in aquatic settings. The application of eDNA methods in terrestrial environments is less developed, with researchers still exploring collection methods of eDNA from the air. One novel approach recently trialed is the use of spiderwebs, a passive, natural material whose sticky silk threads can capture tiny airborne particles, including eDNA. Here, we investigated the use of spiderwebs for airborne eDNA collection as part of a broader survey of biodiversity at the urban Ascot Hills Park in …

Assessment Of Residents’ Knowledge, Attitude And Perception Of Climate Change Issues In Ibadan South West Local Government, Oyo State, Nigeria, Samson Olanrewaju, Samuel Oyeniyi, Sola Atoyebi, Modupeola Okubena, Chinedu Abazu, Emeka Adibe

Cities and the Environment (CATE)

This study examines residents’ knowledge, attitude, and behavioural responses to the impacts of climate change in Ibadan South West Local Government Area, Oyo State, Nigeria. It evaluates residents’ awareness of climate change, analyses their behavioural responses to climate change impact, and identifies household characteristics that influence knowledge, attitude, and perception of climate change in the area. The study utilised a mixed-methods research approach, using such instruments as questionnaire administration and interviews. The study employed a multistage sampling technique where a total of seven (7) Enumeration Areas (EAs) were selected, and 206 questionnaires were administered to residents of the area. These …

Cv: Arvie Vitente (Physical Therapy), Arvie Vitente

Rehabilitation Sciences Department Curricula Vitae

No abstract provided.

“Real-World Prognostic Performance Of Different Severe And Advanced Heart Failure Definitions: Data From The Swedish Heart Failure Registry”, Federica Guidetti, Lars H Lund, Lina Benson, Camilla Hage, Felix Lindberg, Christian Basile, Alessandro Villaschi, Francesca Musella, Davide Stolfo, Raffaele Scorza, Guillame Baudry, Charlotta Ljungman, Oscar Braun, Valeria Valente, Biykem Bozkurt, Marco Metra, Gianluigi Savarese

Faculty, Staff and Students Publications

Background: A valid definition of severe heart failure (HF) is essential for earlier identification, timely referral for advanced therapies, and to optimize clinical trial design.

Objectives: To assess the prevalence, prognostic performance, and 1-year outcomes associated with different definitions of severe and advanced HF (AdvHF) in patients with heart failure with reduced ejection fraction (HFrEF).

Methods: We included 15,153 patients with EF < 40%, HF duration >6 months, and no prior left ventricular assist device or heart transplant, from the Swedish Heart Failure Registry. Several definitions of severe/AdvHF were evaluated: a simplified Heart Failure Association (HFA) definition (NYHA III-IV, EF < 30%, ≥2 HF hospitalizations in 12 months), the GALACTIC-Severe-definition (NYHA III-IV, EF < 30%, ≥1 hospitalization in 6 months), and variations adding/removing criteria such as NT-proBNP levels and diuretic dose to the HFA-AdvHF definition. Predictive performance and 1-year outcomes were analyzed.

Results: The HFA-definition identified …

Limiting Post-Operative Nausea And Vomiting In High-Risk Patients, Turner Tinsley

Group: Samford University Moffett & Sanders School of Nursing

Postoperative nausea and vomiting (PONV) remains a major challenge in anesthesia for high-risk surgical patients. Its complications extend beyond discomfort as increased dehydration, fluid shifts, aspiration risk, and hospital stay duration all reduce patient satisfaction. Research and clinical experience highlight the need for anesthesia providers to move away from single-drug prophylaxis and implement individualized, multimodal strategies for high-risk patients.

Early risk identification is vital. The Apfel score—based on female gender, non-smoking status, history of PONV, and likely opioid use—effectively forecasts risk. An Apfel score of 4 indicates over 80% chance of PONV, so timely prevention is crucial. More than tallying …

Cryptic Diversity Within Nyctixalus (Anura: Rhacophoridae): A New Species, A Resurrection, And A Redescription, Jennifer Dever, Jimmy A. Mcguire, Djoko T. Iskandar, Amir Hamidy, Lee L. Grismer

Biology Faculty Publications

The examination of molecular markers confirms hidden diversity and reveals a new species within the Nyctixalus pictus (Peters, 1871) complex. Three genetically distinct clades were recovered: one from the Thai-Malay Peninsula; one from Sumatra, Indonesia; and one from Sarawak, Borneo, East Malaysia. Voucher specimens from each region were compared, and significantly different mean values were found through morphological analyses. The populations also differ significantly in morphospace, as determined by PCA, DAPC, and MFA analyses. The Thai-Malay Peninsula individuals have a distinct, rounded and slightly elongated snout shape compared to the other two clades. Based on these combined data, these three …

Exploring Identity Development Of Therapeutic Boarding School Alumni, Travis Philipsen

Walden Dissertations and Doctoral Studies

Research on therapeutic boarding schools (TBS) has largely focused on treatment experiences and immediate adolescent outcomes, with limited attention to identity development after program discharge. The purpose of this qualitative descriptive study was to examine identity development during emerging adulthood in TBS alumni aged 18-24 and to explore how internal strengths and external supports influenced participants’ developmental experiences after leaving TBS. Positive youth development was the guiding theoretical framework, emphasizing the bidirectional relationship between a person and the external ecological assets they access. Semistructured interviews were conducted with six alumni, and data were analyzed using reflexive thematic analysis within a …

Recent High School Graduates' Perspectives On The Practice Of Teacher Empathy As An Approach To Engage Learners, Susanna Michelle Post

Walden Dissertations and Doctoral Studies

The problem addressed through this study is that recent high school graduates’ perspectives on how teachers practiced empathy as an approach to engage learners have not been explored in an urban school district in a Southern state. Grounded in a conceptual framework that incorporates Kleinfeld’s concept of warm demander pedagogy with Goleman’s emotional intelligence theory, the purpose of this qualitative study was to explore recent high school graduates’ perspectives on how teachers practiced empathy as an approach to engage learners in an urban school district in a Southern state. For this basic qualitative design, semistructured interviews were conducted with 12 …

Psychologists’ And Psychiatrists’ Views On Criminal Behavior, Fetal Alcohol Spectrum Disorder, And Federally Sentenced Indigenous Women In The Prairie Region And British Columbia, Rina Asghar

Walden Dissertations and Doctoral Studies

The overrepresentation of federally sentenced Indigenous women in Canada reflects longstanding structural and systemic injustices within the criminal justice system. Constituting approximately 5% of the female population, Indigenous female offenders are disproportionately represented, especially in maximum security facilities and structured intervention units. This qualitative study examined psychologists’ and psychiatrists’ perspectives on the potential role of fetal alcohol spectrum disorder (FASD) related neurocognitive impairments in increasing justice system involvement among Indigenous women in Western Canada. Guided by the multidimensional Indigenous developmental framework, which integrates historical trauma theory and attachment theory, nine psychologists and one psychiatrist were interviewed in semi-structured interviews. The …

Research On Gaussian Splatting Modeling Of Power Equipment In 3d Scenes, Haiying Li, Haonan Xu, Junfang Hao

Journal of System Simulation

Abstract: To address the issues of missing camera poses in captured images and poor reconstruction quality in 3D modeling of power equipment, a 3D Gaussian splatting 3D modeling method for power equipment based on video sequences was proposed. Theffmpeg was adopted to extract video frames at a reduced rate, and the Scharr operator was employed to quantify the sharpness of video frames to screen high-quality images for forming an input dataset, ensuring the completeness of equipment poses and the quality of modeling data. Through multi-view feature point extraction and matching, combined with an incremental structure-from-motion algorithm to optimize and …

Robot Path Planning By Reinforcement Learning Based On Sac3q-Hdm, Dequan Li, Wan Xiong

Journal of System Simulation

Abstract: To address the issues of overestimated and underestimated biases, low sample utilization rate, and the inability to balance exploration and exploitation in reinforcement learning for path planning, an improved SAC method was proposed. The size balance of entropy was explored and utilized through adaptive temperature coefficient adjustment; on the basis of the SAC framework, a triple Critic architecture was introduced to dynamically weight and fuse the minimum and average values through Qvalue uncertainty, balancing overestimated and underestimated biases. A mixed dynamic sampling experience replay buffer was designed; experience data was partitioned based on reward thresholds; sampling ratios were dynamically …