bluuebunny/crossref_metadata_2025 huggingface dataset:
The changing of the guard
Authors: Olsen Angela
Published: February 2024

This paper considers the impact of service systems on group activities. It describes an inter-professional groupwork project facilitated by a social worker and a community nurse. The project provided an emancipatory experience for a group of adults who had intellectual disabilities. The group was charged with the task of reviewing and updating the recruitment and interview processes used by a ‘Learning Disability Partnership Board’, when employing new support workers.The paper begins with a brief history of intellectual disability and provides a context to the underpinning philosophical belief that people should be encouraged and supported to inhabit valued social roles no matter what disability they may have. It then identifies the ways in which the sponsoring health, education and social care services impacted on the creation and development of a groupwork project. It might have been expected that the nature of the intellectual disability would have been the major influence on group process. However the paper reveals that organisational constraints had a significant impact on group functioning. Issues including, staffing budgets and transport contracts impacted on group process and function.The results of the project show how, with adequate support, people with intellectual disability can make important decisions that have long-reaching impacts on the services.
Encounter of a racially mixed group with stressful situations
Authors: Berger Roni
Published: February 2024

This conceptual article focuses on the dynamics of ethnically/racially mixed groups in the encounter with a highly stressful situation. To inform the understanding of groups at the intersection of stress and racially mixed group composition, stress and group work literature is critically reviewed and analyzed. Anchored in theoretical, clinical and empirical literature about small groups as microcosms of societal structure and power relationships, specifically as it relates to race and ethnicity, group processes that occur when an ethnically/racially mixed group experiences a stressful event are discussed.The challenges that such an experience poses to the group are presented and illustrated by the use of anecdotal examples from the author’s national and international experience as a social work practitioner, educator and trainer. Implications for practice and directions for future research are offered.
Una revisión de la investigación empírica sobre liderazgo transformacional en universitarios (2014-2023)
Authors: Quiñones Gonzales Linda Giovanna , Espíritu-Alvarez Fernando Julio
Published: February 2024

Se analizaron estudios empíricos sobre liderazgo transformacional en estudiantes universitarios de pre y posgrado del Perú y el extranjero en el periodo 2014 al 2023. La muestra fue de 23 artículos de investigación obtenidos de cinco bases de datos electrónicas: ERIC, ScienceDirect, Scopus, PubMed y Alicia. Se aplicó la Declaración PRISMA 2020 para realizar la revisión sistemática del tema propuesto. Se encontró que Estados Unidos es el país de donde provienen los principales autores que más publicaron sobre el tema (30,43%), el 2021 fue el año con más publicaciones (26,08%), el enfoque y diseño más usado fue el cuantitativo (69,6%) y correlacional (42,86%) respectivamente. Los instrumentos más utilizados para medir el liderazgo transformacional fueron el Cuestionario de Liderazgo Multifactorial (MLQ) de Bass & Avolio (1990) y el Inventario de práctica de liderazgo (LPI) de Kouzes & Posner (2012). Adicionalmente, se presentó un panorama de las propiedades psicométricas de los instrumentos aplicados y los estadísticos usados por los investigadores de los estudios seleccionados. Finalmente, se brindaron algunas recomendaciones para continuar con el desarrollo del tema abordado.
Optimization and Performance Analysis of CAT Method for DNA Sequence Similarity Searching and Alignment
Authors: Gancheva Veska , Stoev Hristo
Published: February 2024

Bioinformatics is a rapidly developing field enabling scientific experiments through computer models and simulations. Considering the vast databases of biological data available, it is ex-tremely important to develop efficient methods and algorithms for their processing. Sequence comparison is the best method for studying the evolutionary interaction between genes. It is based on alignment – the process of arranging two or more sequences to achieve the maximum level of identity and degree of similarity. The paper presents a new version of the algorithm for pairwise DNA sequences alignment, based on a new method called CAT, where a dependency with a previous match and the closes neighbor are taken in consideration to increase uniqueness of the CAT profile and to reduce possible collisions, i.e. two or more sequence having same CAT profiles. This makes proposed algorithm suitable for finding exact match of a concrete DNA se-quence in a big set of DNA data faster. The generation of CAT profiles is made once before data has been uploaded to the database, allowing the profiles to be used as metadata for the sequenc-es. It consists of an algorithm to calculate a CAT profile against the selected reference sequences and an algorithm to compare two sequences based on the calculated CAT profiles. Improve-ments in generation of the CAT profiles, are detailed described in the paper. Block scheme, pseudo code tables and figures were updated according to the proposed new version and ex-perimental results. Experiments have been carried out with the new version of the method and different datasets to align DNA sequences based on the CAT method. New experimental results in terms of collisions, speed, and efficiency of the proposed solutions are presented. Experiments related to the performance comparison with Needleman-Wunsch were re-executed with the new version of the algorithm to confirm that we have the same performance. An analysis of the per-formance of the proposed CAT based algorithm against Knuth–Morris–Pratt algorithm, which has a complexity of O(n) and is one of the most widely used for searching biological data, was performed. The impact of prior matching dependencies on uniqueness for generated CAT pro-files is investigated. The analysis of the experimental results obtained by sequence alignment shows a small deviation of the proposed algorithm based on the CAT method, which can be ig-nored if this deviation is acceptable at the expense of performance. The time efficiency of the CAT algorithm remains constant, regardless of the length of the sequences. Therefore, the ad-vantage of the proposed method is its fast processing in the alignment of large sequences, for which the execution of the exact algorithms takes a long time. The example code realization of the CAT Method, under the protection of the GNU General Public License v3.0, can be accessed on GitHub at: https://github.com/HristoS/CATSequenceAnalysis.
Development of a Decision Support System for Animal Health Management Using Geo-Information Technology: A Novel Approach to Precision Livestock Management
Authors: Panda Sudhanshu , Terrill Thomas H. , Siddique Aftab , Mahapatra Ajit K. , Morgan Eric R. , PechCervantes Andres , Van Wyk Jan A.
Published: February 2024

Livestock management is challenging for resource-poor (R-P) farmers due to unavailability of quality feed, limited professional advice and rumor-spreading about animal health condition in a herd. This research seeks to improve animal health in southern Africa by promoting sericea lespedeza (Lespedeza cuneata), a nutraceutical fodder legume. An automated geospatial model for precision agriculture (PA) can identify suitable locations for its cultivation. Additionally, a novel approach of radio frequency identifier (RFID) supported telemetry technology can track animal movement, and the analyses of data using artificial intelligence can determine sickness of small ruminants. This RFID-based system is being connected to a smartphone app (under construction) to alert farmers of potential livestock health issues in real-time so they can take immediate corrective measures. An accompanying Decision Support System (DSS) site is being developed for R-P farmers to obtain all possible support on livestock production, including the designed PA and RFID-based DSS.
Social Support and Resilience Are Protective Factors against COVID-19 Pandemic Burnout and Job Burnout among Nurses in the Post-COVID-19 Era
Authors: Moisoglou Ioannis , Katsiroumpa Aglaia , Malliarou Maria , Papathanasiou Ioanna V. , Gallos Parisis , Galanis Petros
Published: February 2024

Nurses have experienced several psychological and work-related issues during the COVID-19 pandemic including pandemic burnout and job burnout. The aim of the study was to examine the impact of social support and resilience on COVID-19 pandemic burnout and job burnout among nurses. We conducted a cross-sectional study in Greece. Study population included 963 nurses. We measured social support, resilience, COVID-19 pandemic burnout, and job burnout with the Multidimensional Scale of Perceived Social Support, Brief Resilience Scale, COVID-19 burnout scale, and single item burnout measure respectively. Nurses received high levels of social support, while their resilience was moderate. Additionally, nurses experienced moderate levels of COVID-19 burnout and job burnout. Increased social support (adjusted beta = -0.075, 95% CI = -0.125 to -0.024) and increased resilience (adjusted beta = -0.399, 95% CI = -0.491 to -0.308) were associated with reduced COVID-19 pandemic burnout. We found a negative relationship between social support and job burnout (adjusted beta = -0.263, 95% CI = -0.405 to -0.121). A similar negative relationship was found between resilience and job burnout (adjusted beta = -0.529, 95% CI = -0.785 to -0.272). Social support and resilience can act as protective factors against COVID-19 pandemic burnout and job burnout among nurses. Policy makers should develop and implement appropriate strategies to improve nurses’ social support and resilience since they are the backbone of healthcare systems worldwide.
Generation Mechanism of Hydroxyl Radical in Micro Nano Bubbles Water and Its Prospect in Drinking Water
Authors: Wang Tianzhi , Yang Ci , Sun Peizhe , Wang Mingna , Lin Fawei , Fiallos Manuel , Soon-Thiam Khu
Published: February 2024

Micro nano bubbles (MNBs) can generate ·OH in situ, which provides a new idea for the safe and efficient removal of pollutants in water supply systems. However, the difficulty in obtaining stable MNBs causes the low efficiency of ·OH generation, which makes the inability to guarantee the removal efficiency of pollutants. This paper reviews the application research of MNBs technology in water security from three aspects: the generation process of MNBs in water, the generation rule of ·OH during MNBs collapse, and the control mechanism of MNBs on pollutants and biofilms. We found that MNBs generation methods are divided into chemical and mechanical (about 10 kinds) categories, and the instability of bubble size restricts the application of MNBs technology. The generation of ·OH by MNBs is affected by pH, gas source, bubble size, temperature, external stimulation. And pH and external stimulus have more influence on ·OH generation in situ than other factors. Adjusting pH to alkaline or acidic conditions and selecting ozone or oxygen as the gas source can promote the ·OH generation. MNBs’ collapse also releases a large amount of energy, which the temperature and pressure can reach 3000K and 5Gpa respectively, making it efficient to remove ≈90 % of pollutants (i.e., trichloroethylene, benzene, and chlorobenzene). The biofilm can also be removed by physical, chemical, and thermal effect. MNBs technology also has great application potential in drinking water, which can be applied to improve water quality, optimize household water purifiers, and enhance the taste of bottled water. Under the premise of safety, let people of different ages taste, finding that compared with ordinary drinking water, 85.7 % of people think MNBs water is softer, 73.3 % of people think MNBs water is sweeter. This further proves that MNBs water has a great prospect in the drinking water application. This review provides innovative theoretical support for solving the problem of drinking water safety.
Delay Embedding Spatio-Temporal Dynamic Mode Decomposition
Authors: Nedzhibov Gyurhan
Published: February 2024

Spatio-Temporal Dynamic Mode Decomposition (STDMD) is an extension of Dynamic Mode Decomposition (DMD) designed to handle spatio-temporal datasets. It extends the framework so that it can analyze data that has both spatial and temporal variations, allowing for the extraction of spatial structures and their temporal evolution. The STDMD method extracts temporal and spatial development information simultaneously, including wavenumber, frequencies and growth rates, which is essential in complex dynamic systems. We provide a comprehensive mathematical framework for sequential and parallel STDMD approaches. We also introduce delay coordinates generalization to the presented algorithms to extend the scope of their application. The extension, labeled delay embedding STDMD allows the use of delayed data, which can be both time-delayed and space-delayed. An explicit expression of the presented algorithms in matrix form is also provided, which facilitates theoretical analysis and provides a solid foundation for further research and development. The novel approach is demonstrated using some illustrative model dynamics.
Effects of Suspended Sediments on the Population Dynamics and Behavior of Filter-Feeding Brachycentrus occidentalis (Trichoptera: Brachycentridae) Larvae in a Southeastern Minnesota, USA, Trout Stream
Authors: Mundahl Neal D. , Mundahl Erik D.
Published: February 2024

Suspended and deposited sediments in streams can interfere with filter-feeding caddisfly larvae by reducing feeding sites and feeding efficiency, potentially lowering densities, growth rates, and secondary production of an important trout prey. We conducted field studies at multiple stream sites with differing suspended sediment loads, and a laboratory study conducted under controlled conditions, together designed to examine the role of suspended sediments in the population dynamics and behavior of Brachycentrus occidentalis (Trichoptera: Brachycentridae) larvae in a Minnesota, USA, trout stream. Stream sites that had elevated turbidities and suspended sediments also had significantly more fine bottom substrates and higher substrate embeddedness. In addition, Brachycentrus densities were reduced, growth rates were slower, secondary production was reduced, and overall benthic macroinvertebrate taxa richness was lowest at the site with the highest suspended sediment loading. Colder water temperatures at one site also influenced Brachycentrus production. In 24-hour laboratory studies conducted in recirculating aquaria, the feeding activities of Brachycentrus larvae were reduced and positioning altered under high turbidities (500 nephelometric turbidity units, NTU) relative to low turbidities (50 NTU or lower). High suspended sediment loads have adversely affected filter-feeding caddisfly larvae by embedding and burying preferred coarse feeding substrates, altering their feeding positions and movements during highest flows, and ultimately impacting densities, growth rates, and secondary production.
Implementing Federated Governance in Data Mesh Architecture
Authors: Dolhopolov Anton , Castelltort Arnaud , Laurent Anne
Published: February 2024

Analytical data platform have been used for decades for improving the organizational performance. Starting from the data warehouses used primarily for structured data processing, through the data lakes oriented for raw data storage and post-hoc data analyses, to the data lakehouses − a combination of raw storage and business intelligence pre-processing for improving the platform efficacy. But in recent years a new architecture called Data Mesh has emerged. The main promise of this architecture is to remove the barriers between operational and analytical teams in order to boost the overall value extraction from the big data. A number of attempts has been made to formalise and to implement it in existing projects. Although being defined as a socio-technical paradigm, data mesh still lacks the technology support for enabling its widespread adoption. To overcome this limitation, we propose a new view of the platform requirements alongside the formal governance definition that we believe can help in successful adoption of the data mesh. It is based on fundamental aspects such as decentralized data domains and federated computational governance. In addition, we also present a blockchain-based implementation of a mesh platform as a practical validation to our theoretical proposal. Overall, this article demonstrates a novel research direction of the information system decentralization technologies.
Development and Implementation of Virtual Reality Application: Age-Friendly Health System Scenario
Authors: Tewary Sweta , Shnayder Oksana , Dezine Marie , Pandya Naushira
Published: February 2024

INTRODUCTION: With an increase in the aging population, the application of evidence-based practice in geriatric education can strengthen knowledge, skills, and clinical experience for healthcare students caring for older adults. Age Friendly Health Systems (AFHS) is one of the frameworks founded on providing evidence-based and low-risk care centered on what matters most to older adults, their families, and caregivers. Virtual Reality (VR) platforms are gaining popularity due to their ability to provide an immersive, hands-on learning experience resembling an actual medical practice or care setting. Immersive learning enhances students’ sensory perceptions, promoting an innovative and engaging way of acquiring concepts that are difficult to teach in real life. This study aimed to design, develop, implement, and evaluate a case-based training module highlighting AFHS and educating medical students on the 4Ms approach in geriatric care (What Matters, Medication, Mentation, and Mobility).

METHODOLOGY: The project was a feasibility study completed in two phases. Phase one included planning and development of a case-based scenario incorporating 4Ms of AFHS. Phase two included implementing and evaluating the VR training module into the geriatric curriculum for medical students.

RESULTS: The final VR case displays a hospital and post-acute setting where an elderly patient is admitted for a hip fracture. Students learn how to triage and treat patients from admission to discharge while demonstrating their knowledge of AFHS. Approximately 10% of students completed the evaluation survey, and preliminary results indicate significant knowledge change in pre-post scenario-based training on AFHS.

CONCLUSION: The VR education platform and embedded scenario promise an innovative adaptation of technology in learning the concepts of the 4Ms of AFHS. However, future studies should explore VR education with clinical assessment evaluation to ensure competence in providing Age-Friendly care.
Shannon Holes, Black Holes and Knowledge: Can a Machine become a “Self-Aware" Teammate?
Authors: --- William Lawless , Moskowitz And Ira S.
Published: February 2024

We develop new theory from a broad case-study approach to explore a better understanding of what constitutes knowledge and its value as identifiable to human-machine teams. From past research, this trail of exploration will lead to these initial questions: What is the value of debate in the furtherance of knowledge? Will machines with AI be able to contribute to a debate if we humans cannot define it or determine its value sufficiently for a machine’s understanding, contribution, exploration and identification? Like humans, as teammates, machines must be able to determine with AI what constitutes the usable knowledge that contributes to a team’s success in the field (e.g., testing "knowledge" in the field, identifying new knowledge, using knowledge to develop innovation) or its failure (viz., trouble shooting; identifying weaknesses; discovering vulnerabilities, hiding by deception). It matters not whether a debate is public, private or unexpressed by an individual human or machine agent alone; we speculate in this exploration that the process advances the science of autonomous human-machine teams and assists in interpretable machine learning. We conclude with questions and a speculation: How does a human become aware or express its awareness of knowledge? Can a machine be as expressive as its human teammates? And how does a human-machine teammate become aware that its teammates possess sufficient knowledge to perform a task? We speculate that the structure of “knowledge," once found, is resistant to alternatives (i.e., it is ordered); that its functional utility is generalizable; and that its applications are multifaceted (akin to maximum entropy production). The complexity of the team is taken into consideration in our search for knowledge, which can also be used as an information metric.
Seasonal Variation in the Gut Microbiota of Athletes: A Comparative Study of Japanese Handball Players
Authors: Toda Kazuya , Yoshimoto Shin , Yoshida Keisuke , Mitsuyama Eri , Iwabuchi Noriyuki , Hosomi Koji , Sanada Takayuki Jujo , Tanaka Miyuki , Nanri Hinako , Kunisawa Jun , Odamaki Toshitaka , Miyachi Motohiko
Published: February 2024

Despite accumulating evidence that suggests a unique gut microbiota composition in athletes, a comprehensive understanding of this phenomenon is lacking. Furthermore, seasonal variation in the gut microbiota of athletes, particularly during the off-season, remains underexplored. This study aimed to compare the gut microbiotas between athletic subjects (AS) and non-athletic subjects (NS), and to investigate variations between athletic and off-season periods. The data were derived from an observational study involving Japanese male handball players. The results revealed a distinct gut microbiota composition in AS compared with NS, characterized by significantly higher alpha-diversity and a greater relative abundance of Faecalibacterium and Streptococcus. Moreover, a comparative analysis between athletic and off-season periods in AS demonstrated a significant change in alpha-diversity. Notably, AS exhibited significantly higher alpha-diversity than NS during the athletic season, but no significant difference was observed during the off-season. This study demonstrates the characteristics of the gut microbiota of Japanese handball players and highlights the potential for changes in alpha-diversity during the off-season. These findings contribute to our understanding of the dynamic nature of the gut microbiota of athletes throughout the season.
Social Life Cycle Assessment of Laser Weed Control System. A case study
Authors: Michaliszyn-Gabryś Beata , Bronder Joachim , Krupanek Janusz
Published: February 2024

Agriculture is an important sector of European Union in societal , economic and environmental dimensions. Sustainability of the sector require improvements in its key operations. Weeding is one of the crucial operation having impact on farms’ productivity, safety for farmers, food security and environmental state. To achieve EU policy goals of sustainable agriculture there are needed new technical and organizational solutions. One of the advanced techniques are laser based
weeding technique. It is important to understand well the impacts of introduction of these tech-niques to the markets and agricultural practice in sustainability context. For that reason Social Life Cycle Assessment was performed. The method was based on participatory approach. The as-sessment was carried in three perspectives: general society, farmers, and business perspective re-lated to agriculture. Expert interviews based on questionnaires and workshops were realized to get the opinions on the impacts of a new laser technique on particular aspects of its implementation. The results show generally positive impact in all perspectives, especially in the perspective of farmers.
The role of neurotransmitters in the pathogenesis of inflammatory bowel disease
Authors:   Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation, Sergeychuk E.V. , Revnova M.O. ,   Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation, Mishkina T.V. ,   Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation, Gaiduk I.M. ,   Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation, Kaprior E.V. ,   Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation, Koltuntseva I.V. ,   Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation, Bairova S.V. ,   Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation, Sakhno L.V. ,   Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation, Makarova E.Yu. ,   Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation
Published: February 2024

Among the diseases of the gastrointestinal tract, inflammatory bowel diseases occupy a special place and are the subject of a thorough, comprehensive study, attracting the attention of scientists and doctors around the world. The relevance of numerous studies is due to the steady increase in incidence, the presence of severe disabling forms, a variety of extraintestinal and systemic manifestations. Social and economic importance is determined by the manifestation of inflammatory bowel diseases mainly among young people of working age. At the same time, the mechanisms that trigger the inflammatory process have not been studied enough. The selection of risk factors also seems to be very arbitrary, which significantly reduces the possibility of preventing these conditions, predicting relapse and, as a result, the quality of life of patients. This literature review is an attempt to collect together the available data on the role of acetylcholine, serotonin, substance P and the vasoactive intestinal peptide in the development of the inflammatory response and modulation of the immune response in Crohn's disease and ulcerative colitis. The study of the content of neurotransmitters in the blood of patients and colon biopsy specimens can be important in developing criteria for laboratory diagnostics, assessing the degree of activity of the pathological process, making a forecast about the effectiveness of the therapy and the outcome of the disease. Key words: acetylcholine, Crohn's disease, inflammatory bowel disease, neurotransmitters, serotonin, substance P, ulcerative colitis, vasointestinal peptide
Synthesis, Characterization and Antimicrobial Activity of New 4-aminoantipyrine Derivatives Using Ultrasonic Mediation
Authors: Youns Naween M.
Published: February 2024

تم استخدام تفاعل المباشر, ذو وعاء واحد، ثلاثي المكونات بين الألديهايدات الاروماتيه المعوضه, 2-نافثول و4- أمينو أنتيبيرين لتخليق سلسلة جديده من 4-(((2-hydroxynaphthalen-1-yl) (phenyl) methylene) amino)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (A1- A5)  لقد أجريت هذا التفاعل بأستخدام كلوريد الزركونيل كمحفز فعال في حالة التشعيع بالموجات فوق الصوتية. في الحقيقة أن هذه المشتقات لديها قدره على العمل كمواد أساسية في تكوين مركبات جديده 4- (1H-naphtho [1,2-e] [1,3] oxazin-2(3H)-yl)-2-phenyl-1, 5-dimethyl-1,2-dihydro-3H-pyrazol-3-one(A6, A7 and A8). وبالمثل, تم استخدام  MCRs التي أدت إلى تكوين مركب حلقي غير متجانس  (1،3-نافثوكسازين( وتضمنت تفاعل 4- أمينو أنتي بييرين, و الفورمالديهايد و 2-نافثول بنسبة مول 1: 2: 1 لتكوين , 4-(1H-naphtho [1,2-e] [1,3] oxazin-2(3H)-yl)-2-phenyl-1-5 dimethyl-1,2-dihydro-3H-pyrazol-3-one (A9)1 يبدأ هذا التفاعل بأدخال نظام محفزZrOCl2-K2CO3  ويستمر من خلال التكثيف وتكوين الحلقه. ثم تحليل جميع المركبات المنتجه من خلال بيانات أطياف IR و  H1 NMR و  C13 NMR لتوضيح عمل هذه المركبات المميزه. باستخدام طريقة التخفيف الدقيق للمرق وطريقة نشر القرص، تم تقييم الأنشطة المضادة للبكتيريا (إيجابية الجرام وسالبة الجرام) والفطريات و مقارنة بالأدوية التقليدية (امبيسلين, سيبروفلوكساسين و اموكسيسلين). كان للمركبات المحضرة مجموعة واسعة من التأثير بقيم MIC من 200 600,   و 1000ميكروغرام / مل ضد البكتيريا التي تم فحصها ، كما هو محدد بواسطة التحليل الميكروبيولوجي.
Investigation the Effect of Thermal Agent on Physical Properties of PVC-PVA Blended
Authors: Neamah Zainab j. , Mahdi Shatha H. , Jasim Kareem A.
Published: February 2024

في هذه الدراسة , الخصائص البصرية لبولي فنيل كلورايد (PVC)  و بولي فنيل الكحول (PVA)  واغشية الخلائط بولي فنيل الكحول – بولي فنيل كلورايد الثنائية بتراكيز مختلفة (PVA75% + PVC25%, PVA50% + PVC50%, and PVA25% + PVC 75%) قد تم فحصها بالنسبه لدرجات الحرارة مختلفة (25, 120, 140) درجة سليزية لمدة ساعه واحدة. لقد تم تحضير اغشية الخلائط لبولي فنيل الكحول – بولي فنيل كلورايد الثنائية باستخدام طريقة الصب. مطيافية الاشعة المرئية–فوق البنفسجية سوف تستخدم لتعيين الخصائص البصرية لهذه الاغشية في مدى اطوال الموجية (200-900) نانومتر مثل النفاذية و امتصاصية ومعامل امتصاص و فجوة الطاقة وكذلك تأثير درجة الحرارة على هذه المعاملات. النتائج التى تم الحصول عليها من الجزء العملي تشير بان الامتصاصية ومعامل الامتصاص لخلائط  بولي فنيل الكحول – بولي فنيل كلورايد الثنائية سوف تزداد مع زيادة تركيز بولي فنيل الكحول. فجوة الطاقة لخلائط  بولي فنيل الكحول – بولي فنيل كلورايد الثنائية بتراكيز مختلفة سوف تقل مع زيادة تركيز بولي فنيل الكحول. يتميزنسبة الخليط الثنائي PVA 75%+ PVC25% بخصائص بصرية مناسبة للغايه. امتصاصية و معامل امتصاص لخلائط بولي فنيل الكحول – بولي فنيل كلورايد الثنائية سوف تزداد مع زيادة درجة الحراره في حين فجوة الطاقة والنفاذية  لخلائط بولي فنيل الكحول – بولي فنيل كلورايد الثنائيه سوف تقل مع زيادة درجة الحرارة. طبيعة الأنتقالات الالكترونية لخلائط  بولي فنيل الكحول – بولي فنيل كلورايد الثنائية بتراكيز مختلفة قبل و بعد تعرض للدرجات الحرارة هي غير مباشرة. من النتائج العلمية التي تم الحصول عليها يمكن الاستنتاج ان الامتصاصية و معامل الامتصاص لخلائط بولي فنيل الكحول – بولي فنيل كلورايد الثنائية هي أفضل من البوليمرات بولي فنيل الكحول وبولي فنيل كلورايد النقية. الخصائص البصرية لأغشية الخلائط بولي فنيل الكحول – بولي فنيل كلورايد الثنائية سوف تتأثر بتعرض الى درجات الحرارة.
Enhancing Fuzzy C-Means Clustering with a Novel Standard Deviation Weighted Distance Measure
Authors: Mohammed Ahmed Husham , Ashour Marwan Abdul Hameed
Published: February 2024

ان الهدف الرئيس من هذه الورقة هو تقديم منهج جديد لمعالجة خوارزمية عنقدة المتوسطات الضبابيةFCM  التي تُعد من اهم واشهر الخوارزميات التي عالجت ظاهرة عدم اليقين في تشكيل العناقيدعلى وفق نسب التداخل، ان من اهم المشكلات التي تواجه هذه الخوارزمية هو اعتمادها بشكل اساسي على مقياس المسافة الاقليدية وبطبيعة الحال هذا المقياس يجعل العناقيد المشكلة تاخذ الشكل الكروي الذي يكون غير قادر على احتواء الحالات المعقدة او المتداخلة، لذا حاولنا من خلال هذه الورقة اقتراح مقياس جديد للمسافة حيث تمكنا من اشتقاق صيغة لتباين العنقود الضبابي ليدخل كوزن على صيغة المسافة الاقليدية علاوة على ذلك تم معالجة حساب مصفوفة التقسيمات من خلال استعمال خوارزمية K-Means وخلق بيئية هجينة بين الخوارزمية الضبابية والخوارزمية الحادة، وللتحقق مما تم عرضه تم استعمال المحاكاة التجريبية ومن ثم تطبيقها على الواقع باستعمال البيانات البيئية للفحص الفيزيائي والكيميائي لمحطات فحص المياه في محافظة البصرة، وقد اثبتت النتائج التجريبية ان مقياس المسافة المقترح (WED) كانت له الافضلية على تحسين عمل خوارزمية HFCM من خلال معيار (Obj_Fun, Iteration, Min_optimization, Good fit clustering and overlap) عندما (k = 2,3)، وبموجب نتائج المحاكاة تم اختيار c = 2 وتشكيل العناقيد للبيانات الحقيقية وتمكنت من ايجاد افضل دالة هدف (23.93، 22.44، 18.83) عند درجات التضبيب (1.2، 2، 2.8) بينما حسب درجة التضبيب (m = 3.6) كانت دالة الهدف لمقاس (ED) هي الاقل ولكن كانت المعايير (  Iter. =2 ، Min_optimization = 0،  ) تؤكد على ان (WED) هي الافضل.
Mechanical Performance and Corrosion Behaviour of Aluminum7075 Reinforced by Nano-Titanium dioxide
Authors: Raouf Raouf Mahmood , Ghalib Lubna , Muhammad Ahmed K.
Published: February 2024

في هذه الدراسة ، تم تطبيق تقنية الصب بالتحريك (SCT) لتكوين مركب الألمنيوم (Al) النانوي مع نسب وزنية مختلفة من مسحوق ثاني أكسيد التيتانيوم النانوي (TiO2). تم فحص الخصائص البنائية ,الميكانيكية والتآكل لمتراكبات النانو. دراسة البنية المجهرية تمت عن طريق المجهر الإلكتروني الماسح (SEM) ، بينما تم الحصول على التركيب البلوري للعينات باستخدام حيود الأشعة السينية (XRD). بالإضافة إلى ذلك ، تم غمر المركبات النانوية في محلول 0.5 مولاري من حمض الهيدروكلوريك لقياسات معدل التآكل والديناميكية الفعالة. أظهرت النتائج أن أفضل عينة كانت 0.03٪ ، حيث زادت الصلابة بنسبة 23٪ ، لكن قوة الشد زادت إلى 52٪. حيث أظهرت صور SEM للعينات المعززة بالجسيمات النانوية تجانسًا وانتشارًا واضحًا للجسيمات النانوية في المصفوفة. لذلك ، فإن إضافة جزيئات TiO2 النانوية إلى معدن الألمنيوم أدى إلى تحسين صلابة وقوة الشد للمركبات النانوية بشكل ملحوظ. بالمقابل أظهرت نتائج التآكل أن المواد المركبة النانوية لديها مقاومة تآكل أعلى من المواد المركبة القائمة على Al7075.
Condiciones bioclimáticas en las Lomas y su influencia en la habitabilidad del asentamiento "Ampliación Horacio Zevallos", Rímac, Lima 2019
Authors:   , Hancco Huanca Marisol , Molero Calle Karin Milagros , Carranza Ucañan Alexandra Mirella
Published: February 2024

A lo largo de estos años, las fuertes migraciones que se dieron hacia la capital se han visto emplazadas no solo en los cerros, sino en aquellos “montículos" verdes temporales, más conocidos como lomas. Dentro del distrito del Rímac, podemos identificar a las Lomas de Amancaes, la cual es el hogar de diversas especies animales y vegetales, así como, el de 43 asentamientos, en el cual, el Asentamiento “Ampliación Horacio Zeballos” es ahora, la puerta de ingreso a esta reserva ecológica. Las ocupaciones informales en las últimas décadas han invadido dichas áreas naturales, lo que conlleva no solo a la depredación de las lomas y su contenido de flora y fauna, sino también, a la exposición misma de la población que se asienta, ello comprende sus condiciones de habitabilidad y calidad de vivienda, son afectadas a causa de la precariedad, hacinamiento, variables climáticas propias de una loma costera entre otros factores. La mayor parte de las personas que lo habitan, ignoran la gravedad de cómo se ven afectadas su salud, accesibilidad, inclusión y sus vidas. Este trabajo de investigación realizará el análisis de las condiciones bioclimáticas de la loma y su influencia en la habitabilidad del asentamiento, por lo cual, en base a revisión bibliográfica, se determinará lo que viene sucediendo en el asentamiento; al final, se presentará recomendaciones para el lugar amparadas por reglamentos y autores relacionados a la investigación.
Frecuencia de grupos sanguíneos en gatos domésticos pelo corto y domésticos pelo largo de la región de Lima Metropolitana
Authors:   , Barberena Helfer Ariana Lucia
Published: February 2024

Las transfusiones sanguíneas en medicina felina deben realizarse tipificando al donador y receptor, pues los gatos, a diferencia de los perros, tienen anticuerpos preexistentes contra grupos sanguíneos ajenos al suyo. Primo transfusiones de grupos incompatibles generan reacciones anafilácticas letales; así como también reproducir padres de tipos sanguíneos diferentes produce la Isoeritrolisis Neonatal Felina en los neonatos. Debido a esto es importante conocer las frecuencias de grupos sanguíneos de áreas geográficas específicas y los tipos sanguíneos ligados a ciertas razas. El objetivo de este trabajo fue determinar la frecuencia de los grupos sanguíneos en gatos Domésticos Pelo Corto y Domésticos Pelo Largo de la región de Lima Metropolitana. Se tomó muestras de sangre a 90 gatos, siendo 46 machos y 44 hembras, desde los 3 meses hasta los 8 años de edad, con niveles de hematocrito y hemoglobina en rangos normales y negativos a la prueba Snap Combo Felino de IDEXX ® para descartar Leucemia viral felina e Inmunodeficiencia viral felina. Estas muestras fueron procesadas en el Laboratorio de Patología de la Universidad Científica del Sur donde, usando el Rapidvet-H (Feline) Blood Typing Kit ® se determinó el tipo sanguíneo. Los resultados fueron expresados en tablas de frecuencia y se determinó la asociación entre las variables dependientes, tipo sanguíneo, con las variables independientes; sexo, color y tipo de población de gato sin “pedigree” por medio de la prueba de ANOVA (p<0.05). Se determinó una frecuencia de 100% tipo sanguíneo A en los gatos muestreados, no se halló gatos con el tipo sanguíneo B ni AB así como tampoco se halló una asociación estadísticamente significativa entre la variable tipo sanguíneo con las variables, sexo y tipo de población de gato sin “pedigree”.
Factores asociados a la automedicación para odontalgia en pacientes del MINSA y EsSalud, Concepción 2017
Authors:   , Párraga Huamanchao Yamel Nahún
Published: February 2024

Objetivo. Describir los factores asociados a la automedicación para odontalgia en pacientes de MINSA Y ESSALUD en la ciudad de Concepción. Materiales y Métodos. Estudio descriptivo de corte transversal. Se entrevistó a 115 pacientes de cada institución haciendo un total de 230 participantes. Para el análisis inferencial se utilizó Chi cuadrado con un nivel de significancia del 5%. Resultados. Los pacientes de MINSA Y ESSALUD en la ciudad de Concepción actúan principalmente auto medicándose, se automedican en un 63,91% frente a un 36,09% que no se automedica. Se encontró asociación entre la presencia de automedicación y el grado de instrucción, presentándose una mayor frecuencia en pacientes con grado de instrucción superior (36.7%), seguido del ingreso mensual de pacientes que se automedican los cuales tienen en mayor porcentaje ingresos de 850 a 3000 soles (49.7%), el acceso geográfico al establecimiento entre 10 a 30 minutos es el que prevalece (47.6%) y el acceso económico donde los pacientes con seguro ESSALUD presentan mayor frecuencia de automedicación(56.5%), seguido de los pacientes con SIS (34.7%). Conclusión. Los factores asociados a la automedicación para odontalgia son el grado de instrucción, el ingreso mensual, la accesibilidad económica y geográfica en los pacientes de MINSA y ESSALUD en la ciudad de Concepción.
Optimalisasi Peran Guru Pengabdian Untuk Meningkatkan Kualitas Pembelajaran di Pondok Pesantren Al-Amanah Al-Gontory: Sebuah Tinjauan Efektivitas
Authors: Dita Anggraini  , Akhmad Shunhaji  , Tanrere Syamsul Bahri
Published: February 2024

Teacher effectiveness is the act of displaying or carrying out an activity within an educational institution. Effective teachers must have an important role in dedicating themselves to the educational process. The primary objective of this study is to delineate endeavors aimed at enhancing the efficacy of service teachers in elevating the standard of learning. The research adopts a qualitative approach employing thematic analysis as its model. The data collection methodologies encompass interviews, observations, and documentation. The findings reveal that the predominant model for nurturing service teachers at the Al-Amanah Al-Gontory Islamic boarding school is centered around total quality control. This entails overseeing and regulating the quality of the entire life structure, thereby influencing various facets of the educational environment. The methods used include direction, training, assignment, habituation, supervision, uswah hasanah, and approaches (humane, program, idealism). Next, enhancing teacher proficiency involves the implementation of various programs such as creating pre-teaching materials (RPP), reinforcing teaching materials, reviewing learning materials (Taftisyu al-I'dat al-mufaaji'), conducting supervision (Naqdu Tadris), and carrying out weekly assessments commonly referred to as Saturday evaluations. The effectiveness of the learning experience is validated through the continual commitment of the teaching staff.
Independent versus Spillover Innovation: A Cross-Country Inspection of Contingent Learning-by-Exporting
Authors: Wu Ruohan
Published: February 2024

This paper empirically examines the learning-by-exporting theory from a new angle: how firms innovate. Two innovation strategies are studied: one is independent innovation if a firm conducts in-house research and development activities on its own; the other is spillover innovation if a firm adopts external technologies and knowledge from the others. We acquire firm-level data from 41 economies between 2017 and 2019. The learning-by-exporting effect is then interpreted as a positive linkage between firms’ exports and productivity, which is estimated semi-parametrically. After implementing a three-step estimation method that addresses endogeneity, we find that the realization of learning-by-exporting is importantly subject to firms’ innovation strategies. A significant learning-by-exporting effect can only be detected among firms with spillover innovation, while exporting cannot effectively enhance independent innovators’ performance. Multiple heterogeneity tests support this finding. Discussions and implication analyses follow.
JEL codes: F14, F61, O12, O33, Q55
Collapsible characteristics and prediction model of remodeled loess
Authors: Fan Peipei , Zhang Lingkai , Shi Chong , Zhang Yonggang , Ding Xusheng , Cheng Hui
Published: February 2024

The construction of the open channel projects in the northern Xinjiang region of China often involves traveling through vast areas of loess. The apparent collapsibility of loess is a major concern for engineers as it can lead to uneven deformation and failure of channel slopes. Collapsibility tests and scanning electron microscopy (SEM) analysis were conducted on remolded loess to comprehensively investigate the settlement and deformation mechanisms of collapsible loess from both macro- and micro-perspectives. Furthermore, a prediction model was developed and its applicability was verified. The test results indicated that with the increase of the vertical load, the collapsibility coefficient exhibited a trend of rapid increase followed by slow increase, and eventually stabilized. This trend satisfied a hyperbolic function relationship, which was negatively correlated with the changes of the water content and dry density. SEM analysis on the loess specimens confirmed that collapsible deformation involved a gradual transition from a shelf structure to a mosaic-colloid structure. Factors such as pore size and particle morphology were found to have significant influences on the collapsibility. For prediction purposes, statistical theory and machine learning algorithms were utilized to select variables such as dry density, moisture content, initial porosity ratio, and pressure test parameters. The GA-SVM model had higher accuracy and better applicability. The findings of the current study can provide valuable guide for the construction and management of water-conveyance projects in loess regions.
The association between crowding, natural light, and rates of physical restraints in a New York City community hospital psychiatric emergency room.
Authors: Angelova Yekaterina , Kwak Ha Rim , Osagie Eugene , Sheikh Mohammed , Hashem Ryan
Published: February 2024

NYC community hospitals serve marginalized groups who face significant healthcare inequities. We hypothesized that low square footage and poor natural light availability is correlated with increased rate of physical restraint, further exacerbating structural injustices. We examined the rate of restraints during a period of temporary relocation of the psychiatric emergency room (CPEP) Aug – Dec 2022, and compared these to the same months in 2021 and 2019. We established the square footage and the surface area of the windows of the original (CPEP A) and temporary units (CPEP B) and compared the rates of restraints between CPEP A (2019, 2021) and CPEP B (2022). CPEP B was found to be 89.78% larger than CPEP A, with greater surface area of windows. Differences were noted in the frequency, total duration, and average duration of restraint in the two spaces; the mean rate of restraints in 2022 (CPEP B) was found to be significantly less than the mean rate of restraints in 2019 and 2021 (CPEP A) (p-value < 0.05). The most important limitation of this study was the low power. This study demonstrates the role of psychiatric emergency room size and availability of natural light in reduction of rates of restraints, especially in urban community hospitals which are disproportionately affected by limited space and cost per square footage. Given the low power of this study, we recommend expanding future data collection.
RBM-Q Learning for Rate Prediction in Recommendation Systems
Authors: YELGHI aref
Published: February 2024

Through the recommendation of personalized information, recommendation systems are essential in improving the user experience on a variety of online websites. Some popular and conventional techniques have not been able to perform well in data volume and sparse data problems. In order to compete with them, this paper presents and assesses two algorithms: RBM-Q-Learning 1 and RBM-Q-Learning 2. By proposing novel mechanisms for state representation and action selection, these algorithms attempt to overcome the shortcomings of conventional methods, utilizing Restricted Boltzmann Machines (RBMs) as a major component. The performance of recommendation algorithms on two datasets from the MovieLens platform—MovieLens 100K and MovieLens 1M—are compared in-depth through an experimental research presented in this research. The experiments have been performed based on MAE, RMSE, HR, ARHR, Diversity and Novelty measurement indicators and the proposed algorithms have found proper stability.
Prognostic significance of CT-determined sarcopenia in older patients with advanced squamous cell lung cancer treated with programmed death-1 inhibitors
Authors: Qin Zhang , Lin Ying , Liqian Xu , Ji Yang
Published: February 2024

Background & Aims:
Sarcopenia has been associated with higher toxicity induced by anti-cancer treatments and shorter survival in patients with squamous cell lung carcinoma(SqCLC). Over the past few decades, immune checkpoint inhibitors (ICIs) significantly improves the prognosis. However, few clinical studies explored the effectiveness of immunotherapy in the elderly population. Here, we performed a retrospective analysis to determine the prognostic role of sarcopenia in older patients with SqCLC receiving ICIs.
Methods
We retrospectively assessed SqCLC patients who were treated with PD-1 inhibitors and all patients were at least 70 years old. Pre-treatment sarcopenic status was determined by analyzing L3 skeletal muscle index(SMI) with chest CT. Progression-free survival (PFS) and overall survival (OS) were estimated using the Kaplan-Meier method, and the differences in survival were compared using the log-rank test.
Results
Among 130 male SqCLC patients, 93 had sarcopenia. Patients with sarcopenia were older and had a lower body mass index (BMI). Over an average follow-up of 20.8 months, 92 patients died. For all 130 patients, the mean OS was 13.3 months. Patients with sarcopenia had a significantly shorter OS and PFS than those without sarcopenia (OS, 12.4 ± 5.2 months vs. 15.5 ± 10.5 months, P = 0.028; PFS, 6.4 ± 2.9 months vs. 7.7 ± 4.2 months; P = 0.035). Multivariable analysis showed that sarcopenia was an independent prognostic factor for shorter OS and PFS.
Conclusions
CT-determined sarcopenia is an independent prognostic factor for older patients with SqCLC receiving ICIs.
Safety Risk Assessment of Reservoir Dam Structure: An Empirical Study in China
Authors: Yang Dingying , Wu Jiamei , guo zhenxu , Zeng Xiaoye , Zhang Qianqian
Published: February 2024

Reservoir dam structure guarantees the safety of the public's lives and property and has always been attention worldwide. However, a systematic discussion still needs to be on assessing the safety risk of reservoir dam structure (RDS). This study develops an overall framework for the safety risk assessment of RDS and establishes an evaluation index system. A risk assessment model is constructed based on the cloud and D-S evidence theories. The empirical research results of the XY reservoir project verify the model's reliability. This study provides theoretical support and solutions for managers to make scientific decisions and promotes the development of industry standardization.