bluuebunny/crossref_metadata_2025 huggingface dataset:
Predicting relapsed/refractory disease in childhood hemophagocytic lymphohistiocytosis: A 13-year single-institute retrospective study in Thailand
Authors: Choed-Amphai Chane , Kusontammarat Pattranan , Sathitsamitphong Lalita , Sontichai Watchareewan , NATESIRINILKUL RUNGROTE , Charoenkwan Pimlak
Published: April 2024

Background: Hemophagocytic lymphohistiocytosis (HLH) is a
life-threatening disease. Relapsed/refractory disease is the main cause
of death. This study is aimed to determine the prognostic indicators for
relapsed/refractory disease in childhood HLH (R/R HLH).
Procedure: Infants and children under 18 years of age who were
diagnosed with HLH according to HLH-2004 criteria, MAS-HLH criteria for
rheumatologic diseases, or H-score undergoing treatment in Chiang Mai
University hospital between 2010 – 2022 were included. Demographic
data, clinical characteristics, and laboratory parameters were
retrospectively reviewed. Results: Out of 86 childhood HLH
cases, 30 patients (34.9%) experienced R/R HLH. All patients with
primary HLH developed R/R HLH. The most common form of secondary HLH was
infection-associated hemophagocytic syndrome (IAHS), comprising 43
cases. Of these, 37.2% had relapsed or refractory disease. Univariable
analysis identified several potential risk factors for R/R HLH,
including younger age, severe disease status, higher HLH-2004 criteria
scores, higher H-scores, overt DIC, higher pSOFA scores, and increased
levels of aspartate aminotransferase, total bilirubin, and direct
bilirubin. Multivariable logistic regression analysis revealed that a
pSOFA score of ≥ 8 and age < 3 years were independent risk
factors for R/R HLH, with adjusted odds ratios of 6.35 (95% confidence
interval [CI], 1.18 – 34.19; p = 0.032) and 3.62 (95% CI, 1.04 –
12.63; p = 0.044), respectively. Conclusions: Children with HLH
who have a pSOFA score of ≥ 8, or are younger than 3 years, are at a
higher risk of relapsed or refractory disease. Further evaluation of
management strategies in this context is warranted.
The Critical Role of Choosing Appropriate Genotype Caller and Reference Genome for Population Genomic Inference: A Demonstration Study with Five Pterocarya Species
Authors: Yang Yang , Pang Xu , Peng Mei , Song Gang , Zhang Wen , Lin Kui , Zhang Da-Yong , Bai Wei-Ning
Published: April 2024

Contemporary population genomic studies typically involve mapping raw
reads to a reference genome and analyzing single nucleotide polymorphism
(SNP) data obtained from variant calling. Despite the widespread use of
the genotype caller GATK for variant calling, its design primarily for
human data poses limitations in non-human species. Recently, ATLAS has
emerged as a promising alternative caller, exhibiting superior
performance with lower false positive and negative rates, significantly
impacting phylogenomic inferences. However, the extent to which ATLAS
versus GATK influences downstream population genomic analyses remains
largely unexplored. To address this gap, we conducted a population
genomic study on five Pterocarya species using GATK and ATLAS, alongside
two reference genomes, P. stenoptera and P. macroptera. Analyzing four
datasets, we evaluated mapping depth, coverage rate, linkage
disequilibrium (LD), nucleotide diversity (π), population structure, and
demographic history. Notably, using P. stenoptera as the reference
genome resulted in less depth and coverage rate variation across species
compared to P. macroptera. ATLAS consistently identified more SNPs,
higher nucleotide diversity, and lower LD for both reference genomes.
Population structure results were more sensitive to the choice of
reference genome than callers, while both reference genomes and callers
significantly influenced population demography inference. Our study
emphasizes the critical impact of genotype caller and reference genome
selection on downstream analyses. Based on current evidence, selecting a
closely related reference genome and employing ATLAS for SNP calling are
recommended to enhance the accuracy and reliability of population
genomic studies.
Polystyrene nanoparticles-mediated astragalus polysaccharides down-regulate IL-2 through TLR4/MyD88/NF-κB pathway in lung cancer
Authors: Tan Bangyun , Liu Zhiwu , Xu Xiaoying , Yao Liqiong
Published: April 2024

Immune escape and immunosuppression are the main reasons that affect the
efficacy of lung cancer treatment. This study mainly explored the
mechanism of polystyrene nanoparticles-mediated astragalus
polysaccharides (APS-PSNPs) in improving immune function of mice with
lung cancer. APS-PSNPs were constructed and a lung cancer mouse model
was established to observe tumor volume and mass, and pathological
changes by HE staining. Levels of TNF-a/IFN-γ/IL-2/IL-6 in mouse spleen
tissue were detected by ELISA, the lymphocyte CD3+, CD4+, CD8+ apoptosis
levels were tested along with analysis of the expression of TLR4, MyD88,
and NF-κB. (1) APS-PSNPs were successfully constructed. (2) APS-PSNPs
had a good tumor suppressor effect on lung cancer, inhibited IL-2
expression, and improved immune function of lung cancer mice. (3) TLR4,
MyD88, NF-κB levels in lung cancer mice were upregulated, and MyD88 and
NF-κB levels decreased after inhibiting TLR4 expression with improved
pathological changes of lung. (4) APS-PSNPs effectively reduced TLR4,
MyD88, NF-κB levels. The levels of TNF-a/IFN-γ/IL-2/IL-6 decreased in
APS-PSNPs+TAK-242 group, the apoptosis of spleen lymphocyte subsets
CD3+, CD4+, CD8+ was significantly weakened, and the degree of fibrosis
of lung tumor tissue was significantly lower. APS-PSNPs, with good
anti-lung cancer value, can improve immune function, inhibit lung tissue
lesions, and inhibit tumor progression to a certain extent. This process
is related to reducing TLR4/MyD88/NF-κB activity and down-regulating
IL-2, etc.
COMPUTATIONAL FLUID DYNAMICS SIMULATIONS OF VARIANT DESIGNS OF THE BIPOLAR PLATE FLOW FIELDS FOR PROTON EXCHANGE MEMBRANE FUEL CELL
Authors: N Channa Keshava Naik , Jose Aneesh , Naik Rudra , Bekal Sudesh , G Sameer , Buradi Abdulrajak , Emma Addisu Frinjo , M Anil Kumar H
Published: April 2024

Bipolar plates in the fuel cells are mechanical components chiefly
responsible for power variation and even distribution of fuel and
oxidant at the membrane exchange assembly. To ensure the fuel cell
optimal performance and longevity of the membrane the flow field
pressures need to be in the optimum range. In this study, a combination
of existing and new designs of bipolar plate flow Fields for 100 × 100mm
area membrane exchange assembly Size have been modelled and studied with
the help of computational fluid dynamics. A total of six variant designs
have been analyzed. An attempt is made to understand the most efficient
channel design which results in a good flow field & low-pressure drop.
The simulation studies indicate that the serpentine channel with two
channels-opposite inlets-outlets provides the most uniform pressure drop
and the best fuel distribution and is 10% better than the serpentine
conventional single-channel bipolar plate Flow fields.
Local existence of compressible MHD equations without initial compatibility conditions
Authors: Zhang Yiying , Guo Zhenhua , Fang Li
Published: April 2024

In this paper, we study the initial-boundary value problem of
three-dimensional viscous, compressible, and heat conductive
magnetohydrodynamic equations. Local existence and uniqueness of strong
solutions is established with any such initial data that the initial
compatibility conditions do not be required. The analysis is based on
some suitable prior estimates for the strong coupling term u·∇
H and strong nonlinear term curl H × H . Our proof of the
existence and uniqueness of solutions is in the Lagrangian coordinates
first and then transformed back to the Euler coordinates.
Integrating Safety Practices into the Supply Chain for Sustainable Development in Malaysia's Building Construction Sites
Authors: Sivan Syamaruthadevi , Anuar Rizza , Krishnasamy Thirunavukkarasu , Bahrin Atikah Shamsul , Narayanan N. Sureshkumar PP , Sundram Veera Pandiyan Kaliani
Published: April 2024

The construction industry plays a vital role in driving sustainable development in Malaysia. However, the sector is also associated with various safety risks and challenges. Safety practices on building construction sites are crucial for the well-being of workers and the overall success of construction projects. This research employs a quantitative approach with descriptive analysis to the extent of the Integration of Safety Practices into the Supply Chain. Utilizing mean and standard deviation calculations, the study analyses rates, compliance levels and other key safety indicators across firms in the construction sectors. Addressing safety concerns at every stage of the supply chain, from sourcing raw materials to final project delivery, stakeholders can mitigate risks, minimize accidents and create a secure working environment. In the context of sustainable development, incorporating safety practices into the supply chain aligns with Malaysia's commitment to achieve the United Nations' Sustainable Development Goals. Specifically, it contributes to SDG 8 (Decent Work and Economic Growth) and SDG 11 (Sustainable Cities and Communities). By prioritizing safety, the construction industry can foster a culture of well-being and productivity, attract skilled workers, and promote responsible business practices. Key safety practices that can be integrated into the supply chain include rigorous supplier vetting, ensuring the use of certified and safe construction materials, implementing proper handling and storage procedures, and conducting regular safety training for all workers involved. Additionally, leveraging technology such as Internet of Things (IoT) devices, wearables, and real-time monitoring systems can enhance safety management and enable prompt response to potential hazards.
Optimizing Safety Practices and Culture: A Comprehensive Examination through Perception Surveys in Malaysia's Logistics Industry
Authors: Sivan Syamaruthadevi , Anuar Rizza , Krishnasamy Thirunavukkarasu , Bahrin Atikah Shamsul , Narayanan N. Sureshkumar PP , Sundram Veera Pandiyan Kaliani
Published: April 2024

This study investigates safety practices within Malaysia's logistics industry, a critical component of the nation's economic infrastructure. Employing a quantitative method, specifically a descriptive analysis approach, the research conducts surveys with industry experts and professionals, alongside a quantitative analysis of safety practices. The goal is to comprehensively understand existing safety challenges, identify potential hazards, and assess compliance with safety regulations. Drawing on international best practices, the study benchmarks successful safety models implemented in global logistics hubs, providing valuable insights into the Malaysian context. The outcomes of this research aim to offer a holistic understanding of safety practices and propose actionable recommendations for stakeholders, policymakers, and regulatory bodies. By addressing safety concerns and fostering improvements in protocols, training, and technology integration, the research contributes to the development of a safer and more resilient logistics ecosystem in Malaysia. Ultimately, the study aims to promote sustainable growth in the industry, ensuring the well-being of workers and the public involved in logistics operations while aligning with global standards for safety and security in the logistics sector.
A Conceptual Paper in Developing Model of Entrepreneurial Ecosystems to Boost Graduate Entrepreneurs Through Longitudinal Study
Authors: Khan Yasmin Kamall , Arshad Azlin Shafinaz Mohammad , Ali Azrin
Published: April 2024

High unemployment among university graduates in Malaysia is concerning. Factors contributing to the university ecosystem that support the creation of student and graduate entrepreneurs remain debatable. The OCDC Entrepreneurial Ecosystems framework is the reference for most universities, and evaluating the weaknesses and strengths in the ecosystem pillars at the university level allows for clarity on relevant variables. The main objective of this study is to reconsider the model in the context of Malaysian universities that will enhance student entrepreneurial growth to create jobs and generate income while lowering unemployment and improving GDP. The study will use a longitudinal qualitative multiple-case study approach through a focus group using semi-structured questions with three groups of participants. Samples will be selected using a purposeful random sampling technique. Two top management, three students involved in business while studying, and three entrepreneur alumni from UiTM, UPM, and USM will be interviewed since these universities were awarded the MOHE Entrepreneurial Awards. Data will be analyzed using thematic analysis via NVivo software. This study will contribute to implementing an entrepreneurial ecosystem model according to Malaysia's public university setting. Recommendations to the university and MOHE will be provided based on the findings to enhance students’ involvement in entrepreneurship while still at university. The government can improve on appropriate regulations in providing resources and budget based on this research findings so that the university can serve as an ‘incubator’ for driving university students to become job creators.
The Impact of Training and Development, Job Embeddedness and Flexible Working Arrangements on Talent Retention Among Young Generation in Pharmaceutical Companies in Malaysia
Authors: Saedin Azlina , Noranee Shereen , Ahmad Nursaadatun Nisak , Abas Mohd Khalid , Mohd Idaya Husna , Islam Tasnimul
Published: April 2024

The study aims to investigate the relationship between training and development, job embeddedness and flexible working arrangements on talent retention among the young generation of employees in Malaysian pharmaceutical companies. This research will employ a cross-sectional survey design, using the questionnaire survey method to collect data on the study variables. The sampling technique used in this research is non-probability, purposive sampling. A sample will be collected from 348 young-generation employees working in pharmaceutical companies residing in Malaysia. PLS-SEM will be used to analyze the hypothesized relationships, providing valuable insight into critical factors influencing talent retention in pharmaceutical companies in Malaysia. The scarcity of research in the pharmaceutical context emphasizes the importance of identifying key influences on employee retention, which include training and development, job embeddedness, and flexible working arrangements. Interventions addressing these elements are critical for retaining skilled employees and improving organizational performance. The result of this research contributes to the comprehension of retention schemes, training and development plans, effective flexible work arrangements, and factors promoting job embeddedness. The findings guide organizational leaders in predicting employee preferences, reducing turnover rates, and implementing effective retention strategies, ultimately contributing to enhanced productivity and economic growth in Malaysia's pharmaceutical sector. The research also highlights the positive impact on employees' career advancement, employability, work-life balance, and overall well-being.
The Influence of Work-Life Balance, Workload and Work Environment on Burnout among Teachers in Melaka Tengah District, Malaysia
Authors: Md Shah Suzita , Noranee Shereen , Munir Zarina Abdul , Noranee Salina , Shahruddin Shafiq , Mujanah Siti
Published: April 2024

Teacher burnout emerges as a complex issue intertwined with challenges in maintaining work-life balance, managing heavy workloads, and navigating the work environment within the educational sector. Factors such as the difficulty in achieving a balance between professional responsibilities and personal well-being, excessive work demands, and unsupportive work environments significantly contribute to the risk and prevalence of burnout among teachers. Efforts to address these contributing factors through supportive policies, workload management, and the cultivation of a positive work atmosphere are essential for mitigating burnout and enhancing teacher well-being and retention. This study determines the relationships between work-life balance, workload, work environment, and teacher burnout, utilizing a quantitative approach with data from 332 teachers via a Google Form survey. The findings reveal a positive relationship between work-life balance and burnout, challenging the notion that improved balance alone mitigates burnout. Workload demonstrates a strong positive association with burnout, highlighting the impact of increased demands on teachers. Conversely, a positive work environment exhibits a negative relationship with burnout, suggesting that a supportive organizational climate acts as a protective factor. This study underscores the need for a holistic approach to teacher well-being, recognizing the intricate relationships between workload, personal life, and the organizational environment. These findings offer valuable insights for educational institutions aiming to foster a supportive work environment and mitigate the adverse effects of burnout among teachers.
Empirical Evidence on Tourism, Geopolitical Risk and Economic Policy Uncertainty Relationships in Malaysia
Authors: Mohd Roslen Siti Nurhidayah , Shan Chua Mei , Zaghlol Azlul Kalilah , Ahmad Nazar Shafinaz binti , Mary Pang
Published: April 2024

Malaysia, celebrated for its rich cultural diversity, vibrant cities, and pristine natural landscapes, stands prominently on the global tourism map. However, the tourism industry is susceptible to the impact of geopolitical risk and economic policy uncertainty. These external factors, shaped by global events and policy changes, can significantly influence the tourism landscape in Malaysia. Given this significance, the study aims to empirically investigate the cointegrating relationship between international inbound tourism levels (tourist arrivals), geopolitical risk (GPR index), and economic policy uncertainty (EU index) in Malaysia. The analysis uses quarterly observations from the first quarter of 2000 to the fourth quarter of 2022. The study employs the Granger Causality test, supported by structural VAR impulse functions and variance decomposition analysis to illustrate how economic policy uncertainty responds to shocks in tourist arrivals. The significant causal relationship observed moves from tourist arrivals to economic policy uncertainty. In other words, the study implies that variations in tourist arrivals have a lasting impact on economic policy uncertainty but not necessarily on geopolitical risk. This study provides valuable implications for policy planning and decision-making. Policymakers should consider the implications of shifts in tourism patterns for economic policy uncertainty. The absence of a long-term relationship between tourist arrivals and geopolitical risk may suggest conducting separate risk assessments to manage geopolitical risks that may affect the tourism industry in Malaysia.
A Framework for Healthcare Services Affordability for the Homeless in Malaysia: Addressing Inequalities
Authors: Shafi Roslina Mohamad , Haris Sharazad , Harman Mohd Hakimi , Misman Faridah Najuna , Mohd Rasid Mohamed Eskandar Shah
Published: April 2024

The issue of homelessness is a worldwide problem that necessitates attention from all stakeholders. The major concerns are around inadequate legislation safeguarding the rights of the homeless and their financial ability to seek medical care. This study aims to assess the feasibility of establishing a healthcare framework specifically tailored for the homeless population in Malaysia. Semi-structured interviews were carried out with individuals aged 18 years and older who are currently residing in homeless-related facilities in Malaysia. A total of 57 participants from three distinct sites were questioned. Based on the input from these participants, this study discovered that homelessness can be attributed to a range of factors, such as unemployment, familial issues, criminal histories, and even personal choice. When questioned about their primary necessities when experiencing homelessness, the majority expressed apprehension regarding access to sustenance and housing, while a few also voiced concerns about receiving medical care. Although many individuals disregard the importance of seeking medical care, a portion of the homeless population experiences severe ailments. The report presents preventive and sustainable ways to address the issues of homelessness and suggests improvements to legislation.
The nature of the relationship between service quality and customer satisfaction among mobile users: Experience from Malaysia
Authors: Surin Ehsan Fansuree , Edward Oswald Timothy , Zuhir Nurul Naziha , Abu Adli Khusman , Ashaari Noor Wahida , Shuib Hayati Mardhiah
Published: April 2024

This paper aims to investigate the impact of service quality on customer satisfaction for mobile users in Malaysia. Specifically, this paper examined the impact of service quality dimensions (tangibility, reliability, responsiveness, assurance, empathy) on customer satisfaction in the post-COVID era.  The data were collected by using a self-administered questionnaire to the sample of Kuala Lumpur and Selangor states mobile users. Overall, 117 responses were gathered and five hypotheses were tested using hierarchical regression analyses. The results are mixed. Out of five hypotheses, only two were accepted. Reliability and responsiveness were found significantly positive relation to customer satisfaction whereas tangibility, assurance, and empathy were shown otherwise. Lastly, the discussion part will deliberate on the conflicting results. The limitations and suggestions for future research are also presented.
Unlocking the Potential Research Directions in Effective Teaching: Insights from Bibliometric Analysis
Authors: Mustaffa Abd Hadi , Bahrudin Nur Zahidah , Saddam Siti Zaitun , Mohd Yusoff Zetty Zahureen
Published: April 2024

Effective teaching is considered one of the dominant and emerging topics in education. Hence, there are two objectives of the study. The first objective is to bibliometricaly analyze the performance in terms of citations and publications of Effective Teaching studies. The second objective is to analyze the research themes of Effective Teaching studies. The motivation to conduct this study is based on the gaps in previous studies on effective teaching. This study mainly uses bibliometric analysis, whereby 986 documents were analyzed through two stages – descriptive analysis and keyword network analysis. Selected findings indicated that since 1941, effective teaching studies displayed a growing trend in publications and citation performances. In addition, five research themes dominate effective teaching - 1) effective teaching in higher education, 2) enhancing curriculum with blended teaching, 3) pedagogical professional development, 4) medical education effectiveness, and 5) teacher training for classroom effectiveness. The authors also suggested six potential future research questions in terms of mixed theories, practical and methodology aspects. Hence, the significance of the study is to inspire potential scholars to explore potential holes available in effective teaching
The Effect of Liquidity M3 and Exchange Rate on Sukuk Market Size in Malaysia in Short-Term and Long-Term
Authors: Al-Fakih Dheya Hamood Saif , Zakaria Shahsuzan , Ismail Md Khairu Amin
Published: April 2024

The increase in the size of the sukuk market has become large with time and takes its place among the important topics that need to be studied and developed. This study focuses on the impact of some financial factors on the size of the sukuk market in Malaysia, as it is a leader in the Islamic financial industry, especially the sukuk sector. This study attempts to reveal the relationship between the factors of exchange rate and liquidity M3 as independent variables, and the size of the sukuk market as a dependent variable. This study uses the model of Autoregressive Distributed Lag (ARDL) as well as the test of cointegration to know the relationship between the variables of the study in both short-term and long-term. By examining monthly time series data starting from 04/2011 till 12/2020. The findings appear that the variables of the study have a cointegration relationship in the long run. In the short run, the exchange rate affects the size of the sukuk market significantly negatively, while liquidity M3 influences the sukuk market size positively insignificant. In the long run, the exchange rate has a positive significant effect on the sukuk market size, while the impact of liquidity M3 on the market size of Sukuk is non-significant.
Financial Risk: Case Study Analysis
Authors: Zakaria Shahsuzan , Abdul Rashid Mohd Afzanizam , Al-Fakih Dheya Hamood Saif
Published: April 2024

This study explores the complex context of real-life financial risks. Using a thorough analysis of real case studies to reveal its varied nature and practical implications. Beginning with observations in the Age of Exploration and International Trade, the Financial Crisis of the 17th and 18th Centuries, and the Financial Crises of the 21st Century, this paper highlights the lessons learned for the current organization as well as individual contexts on how financial risk can affect the stability of financial conditions. This article, by deconstructing noteworthy instances of market crashes, corporate scandals, and regulatory failures, could also be used as guidance to emphasize the importance of strong risk management frameworks and tactics in limiting possible threats and improving resilience. Finally, this article serves as an insightful reminder of the importance of case studies in exposing real-world financial risks, providing significant insights for practitioners, researchers, and policymakers navigating the complicated environment of risk management.
The Impact of Workplace Spirituality on Employee Performance
Authors: Ahmad Sharifah Fazirah Syed , Abdul Sabian Nur Arfifah binti , Nawi Nur Raihan Che
Published: April 2024

The contemporary workplace, characterized by its rapid pace and dynamism, acknowledges the profound impact of work spirituality on employee productivity. This research explores the influence of spirituality in the workplace on employee performance through the examination of meaningful work, a sense of community, and organizational trust. Utilizing a quantitative approach with questionnaire distribution among academicians from business and management faculty at a local university in Selangor was conducted. Based on Pearson Correlation analysis, the result reveals a significant positive correlation between meaningful work, a sense of community, organizational trust, and employee performance. All hypotheses were accepted, indicating their positive influence. Moreover, Multiple Regression analysis highlights the substantial impact of workplace spirituality on employee performance. Practically, the study emphasizes aligning efforts for employee development with the recognized factors of workplace spirituality. In conclusion, organizations are urged to acknowledge and integrate spiritual elements in the workplace for a positive impact on employee performance.
A Conceptual Model for Factors Influencing Purchase Intention of Cosmetic Products
Authors: Naseri Roszi Naszariah Nasni , Mohamad Maizatul Saadiah , Esa Maryam Mohd , Gafar Zamry , Ibrahim Roslinawati , Jais Zurairah
Published: April 2024

This paper proposes a conceptual model for factors influencing intention to purchase cosmetic products. Globalization is increasing the intensity of rivalry among cosmetic sector participants. In these instances, business practitioners must devise the best strategies to increase market share. One of the elements that can be concentrated on is consumer behavior. Understanding consumer behavior is one of the most important factors to consider when developing strategies. The primary goal of this study is to investigate the factors that influence customers' purchasing intentions for cosmetic products in Malaysia. Theory of Reasoned Action (TRA) served as a basis for the study, with four additional variables added on. As a result, the study explores six independent variables that influence purchase intention for cosmetic products. The results of this research could contribute to the current body of literature and provide industry stakeholders with insights into how the factors examined in this study impact customer purchase intent. This knowledge empowers them to craft more impactful business strategies.
Understanding the Drivers and Challenges of Telemedicine Adoption in South Western Nigeria: A Comprehensive Analysis
Authors:   Dept of Computer Hardware Engineering DOTS ICT Institute of Technology Abeokuta, Ogun State. Nigeria., Olasege I. G
Published: April 2024

Telemedicine has emerged as a promising solution to improve healthcare accessibility and delivery, particularly in remote and underserved regions like Southwestern Nigeria. However, despite its potential benefits, the adoption of telemedicine in this region faces various challenges. This paper explores the factors influencing telemedicine adoption in Southwestern Nigeria, drawing from existing literature and empirical evidence. Key factors such as infrastructure limitations, technological readiness, regulatory barriers, cultural beliefs, healthcare provider attitudes, and patient acceptance are examined in detail. Understanding these factors is crucial for policymakers, healthcare providers, and technology developers to develop effective strategies for promoting telemedicine adoption and realizing its full potential in improving healthcare outcomes in Southwestern Nigeria. Keywords: Drivers, Challenges, Telemedicine, Adoption, South Western Nigeria, Analysis Journal Reference Format: Olasege, I.G. (2022): Understanding the Drivers and Challenges of Telemedicine Adoption in South Western Nigeria: A Comprehensive Analysis. Journal of Behavioural Informatics, Digital Humanities and Development Rese Vol. 10 No. 1. Pp 65-72. https://www.isteams.net/behavioralinformaticsjournal dx.doi.org/10.22624/AIMS/BHI/V8N1P6
Effects of the Shaft Speed on Stiffness and Damping Coefficients of Hydrodynamic Bearing-Shaft System under Variable Viscosity
Authors: Dal Abdurrahim
Published: April 2024

The rotating shaft-hydrodynamic bearings systems operated with high speed and/or heavy load conditions expose serious rotor-dynamics instability problems due to characteristics of the supporting bearings. The stability and the dynamics of these systems, directly relate to the lubricant properties that are directly affect by the heat generation. In this study, the dynamic characteristics of a shaft-hydrodynamic journal bearing and its stability were investigated under variable viscosity. The equations of lubricant flow were derived by Dowson’s equation under variable viscosity, and the perturbation equations were obtained for 2 degrees-of-freedom system. The heat transfers between oil and the journal surface was modelled in a 3-dimensional energy equation, and the heat transfer on the journal structure was also modelled with heat conduction equation. An algorithm based on finite difference scheme with successive over relaxation method was developed to solve the theoretical models, simultaneously, and a serial simulation was performed to investigate the variations of the dynamic coefficients of the bearing-shaft system concerning the rotating speed for different radial clearance values. It was determined that the high speed increases the lubricant temperature, and so the static and dynamic performance characteristics decrease, moreover, this effect is more dominant for the smaller radial clearance.
Analisis Ketercukupan Daya Listrik Pada Pembangkit Listrik Tenaga Hybrid (Angin dan Surya) Pantai Baru
Authors: Ananda Saputra Muhamad Roy , Hudallah Noor
Published: April 2024

Perhatian akan pengembangan energi terbarukan semakin meningkat dikarenakan polusi lingkungan yang semakin memburuk serta masalah kekurangan energi. Salah satu pengembangan energi terbarukan yang ada di Indonesia adala PLTH Pantai Baru yang terletak di Desa Poncosari, Srandakan, Bantul. Umumnya, pembangkit listrik yang menggunakan sumber energi terbarukan memiliki kelemahan yaitu sangat bergantung pada kondisi alam. Hal yang sama pun terjadi pada PLTH Pantai Baru. Selain itu, juga perlu diketahui apakah daya yang dibangkitkan mampu memenuhi kebutuhan beban yang ada. Penelitian ini merupakan penelitian deskriptif dengan pendekatan kuantitatif. Menurut Walliman (2011: 10), penelitian deskriptif merupakan penelitian yang bergantung pada kegiatan observasi dengan tujuan untuk mengumpulkan data. Data-data yang dikumpulkan berupa data tegangan, arus, dan daya dari PLTH Pantai Baru. Proses pengumpulan data dilakukan selama tiga hari dengan tujuan untuk mendapatkan variasi kondisi lingkungan dan beban. Data-data tersebut kemudian akan dibandingkan dengan hasil simulasi melalui aplikasi Homer. Hasil penelitian yang telah dilakukan yaitu pada hari pertama daya yang dihasilkan PLTH Pantai Baru sebesar 74.204,05 W dengan efisiensi 52,07%. Hari kedua sebesar 55.393,45 W dengan efisiensi 38,87%. Hari ketiga sebesar 40.250,47 W dengan efisiensi 28,25%. Sementara itu, hasil simulasi hari pertama sebesar 80.656,88 W, hari kedua sebesar 67.228,42 W, dan hari ketiga sebesar 61.646,48 W.
Optimalisasi Routing dalam Jaringan Internet of Things Menggunakan Algoritma Physarum dan Kontrol Daya Adaptif
Authors: Laagu Muh Asnoer
Published: April 2024

Penelitian ini mengembangkan metode Physarum Routing Algorithm with Adaptive Power Control (PR-APC) untuk menyelesaikan permasalahan halangan dalam jaringan IoT. Rancangan model PR-APC akan mengidentifikasi semua informasi dalam jaringan kemudian memberikan power pada node terakhir sebelum halangan. Algoritma routing PR-APC akan dibandingkan dengan algoritma routing lainnya yaitu Physarum inspired Routing Protocol (P-iRP) dan Robust Selection Physarum-inspired Routing Protocol (RS-PRP). Protokol routing PR-APC mampu menghasilkan jalur routing terpendek (shortest path) 70% lebih baik dibandingkan dengan RS-PRP dan P-iRP. Delay yang dihasilkan lebih kecil sehingga masa hidup jaringan (network lifetime). Peningkatan kinerja routing PR-APC menghasilkan efisiensi dan keseimbangan sumber daya dalam jaringan sehingga dapat memperpanjang masa hidup jaringan IoT yang memiliki keterbatasan sumber daya dalam infrastruktur jaringan lokal IoT. Peningkatan kinerja routing PR-APC dapat memberikan solusi untuk mengatasi permasalahan halangan yang terdapat pada jaringan IoT. Peningkatan kinerja routing PR-APC dapat memberikan solusi untuk mengatasi permasalahan permasalahan halangan yang terdapat pada jaringan IoT di daerah agroindustri sehingga mampu meningkatkan potensi pertanian dan bisa lebih produktif dengan terhubung satu dan lainnya yang didukung oleh perkembangan kemajuan teknologi
Perancangan dan Implementasi Sistem Pencuci dan Sterilisasi Tangan Berbasis Arduino Uno untuk Pencegahan Penularan COVID-19
Authors: Raihan Muhammad Akbar , Kusban Muhammad
Published: April 2024

Penyebaran COVID-19 dapat dicegah melalui tindakan pencegahan seperti mencuci tangan dan sterilisasi yang efektif. Maka penelitian ini memiliki tujuan dalam merancang dan membangun sistem otomatis untuk mencuci serta mensterilkan tangan berbasis Arduino uno sebagai upaya untuk mengurangi resiko penyebaran COVID-19. Sistem ini menggunakan sensor inframerah untuk mendeteksi hadirnya tangan dan memulai proses pencucian tangan secara otomatis, dimulai dari pemberian air terhadap tangan, kemudian mencemprotkan cairan sabun pada tangan yang sudah terdeteksi sensor yang berada di tempat sabun, dilanjutkan kembali dengan pemberian air untuk membilas sabun dan diakhiri dengan pengeringan tangan dengan blower udara dan sinar UV yang terpisah dari keran air dan tempat sabun. Pengujian dilakukan dengan mengukur waktu yang dibutuhkan untuk mencuci dan mensterilkan tangan, serta tingkat keberhasilan keberhasilan dalam mencapai standar sanitasi yang diharapkan. Hasil penelitian menunjukkan bahwa sistem ini efektif dalam mencuci dan mensterilkan tangan secara otomatis dengan waktu yang relatif cepat, serta dapat membantu mengurangi resiko penyebaran COVID-19 pada tempat umum seperti sekolah, kantor, dan tempat lainnya. Sensor terbaca mulai dari jarak 7cm sampai dengan jarak 1cm, dan debit air mencapai 1120 mL dalam 5 detik. Sabun dapat keluar jika aktif lebih dari 2 detik, dan akurasi sensor suhu mencapai 0,05%.
The Safety of Construction of Roofing Materials with Greening Systems Using Modern Safety Systems for Works at Height
Authors:   Moscow State University of Civil Engineering, Shushunova N.S. , Kudinova Ya.A. ,   Moscow State University of Civil Engineering
Published: April 2024

The relevance of the study relies on the fact that works at height are classified as highly dangerous. The number of injuries caused by falls from heights is threatening, compared with other factors of injuries. According to the statistics, the share of injuries caused by falls from heights is 28 %. According to the legislation, construction works are classified as works at height if there is a risk of fall for an employee from a height of 1.8 m and higher. At the same time, an employer must ensure the implementation of measures to minimize the existing level of injury rate at the construction site following the effective legislation. The basic measures of protection of employees working at heights can include personal and collective protection equipment and the use of protective fencing. In addition, the measures of protection include stationary anchoring devices mounted on the roofs of buildings. There are several versions of construction of anchoring lines; e.g., for concrete, metal, or green roofs. The structure of the anchoring device changes depending on the type of roof; e.g., a flexible anchoring line can be used in locations where the architectural appearance of the building must be preserved; due to its low visibility it is used for pitched roofs. A rigid line is more visible, and it is more appropriate to use it in locations where its impact on the architectural appearance of the building will be minimized. According to the conducted analysis, the existing safety systems used for roof works, to a certain extent, depend on the greening systems of the roof in use.
The Main Causes of Industrial Injuries Occurred during the Operation of Mining Dump Trucks in Gold-Mining Enterprises of Southern Yakutia
Authors:   North-Eastern Federal University named after M.K. Ammosov, Ovchinnikov N.P.
Published: April 2024

Solid minerals mining is one of the main trends in the economic development of the Russian Federation. Mining dump truck transportation is an extremely essential component of the mining industry; in the coming decades, this transport will continue to be crucial for the transportation of overburden and minerals during open-pit mining in the course of the development of solid mineral deposits. Despite the numerous advantages of mining dump trucks, employment of this transport is one of the most hazardous technological processes in the Russian mining industry. More than one-third of all fatal accidents that have occurred in mining production can be associated with mining pump trucks. For example, the number of fatalities registered in certain areas of gold-mining enterprises of Southern Yakutia and associated with the operation of mining dump trucks can reach two cases per year. The goal of the study is to establish the main causes of industrial injuries during the operation of mining dump trucks employed by gold-mining enterprises of Southern Yakutia and the development of various measures to prevent such injuries. According to the results of conducted studies, accidents that occurred during the operation of mining dump trucks were caused by violations of safety rules and requirements in combination with human factors. To ensure the safe operation of mining dump trucks in gold-mining enterprises of Southern Yakutia, control over loading and speed of mining dump trucks should be strengthened; the process of repair job performance must be randomly checked on a regular basis; workers must regularly undergo tests for knowledge of safety rules and requirements for operation of mining dump trucks; and the material and technical base of the trucks must be upgraded. The suggested measures to minimize industrial injuries can be useful for both Russian and international mining companies that employ mining dump trucks.
Increasing the Fire Resistance of Polymer Building Materials to Ensure Fire Safety for Employees
Authors:   Tashkent State Technical University named after Islam Karimov, Kadirov U.B. , Shamansurov S.S. ,   Tashkent State Technical University named after Islam Karimov
Published: April 2024

Occupational safety is a crucial factor in the protection of employees in the service and production industries. It is specifically critical for the construction industry where fire safety measures must be taken into account. Ensuring the fire safety for employees is a complex task requiring constant attention and observance of established rules and procedures. Currently, integrated measures are implemented and certain results are achieved in the sphere of the further implementation of economic reforms in the building materials industry, including the expansion of the production of the most up-to-date materials, structures, and products, and the expansion of their range. The study provides methods to increase the fire resistance of polymer building materials; their physical & mechanical and thermodynamic properties as well as the optimal proportions of fly ash and phosphogypsum to obtain composites for such materials have been investigated. The studies of the elementary composition of industrial manmade wastes and their X-ray diffraction analysis have shown that they mainly consist of silicon dioxide that by more than 80 % consists of the amorphous phase. With the X-ray diffraction analysis, it has been determined that the introduction of fly ash fillers and phosphogypsum waste into the composition increases the thermal stability of polymer materials. The main cause is metal and silicon oxides and phosphorous compounds resistant to temperatures and with the properties of flame-retardants contained in the polymer composite as introduced additives. Based on experimental tests, the fire-resisting properties of the polymer-containing building materials modified with fire-resisting compositions consisting of binding polymer flame-retardant additives and fillers have been studied. The oxygen index increased from 18.5 to 33 %, whereas the mass loss at thermal oxidation decreased from 97.5 to 73–75.5 %, and the flammability level, under GOST 28157, was changed from PV-2 to PV-0.
The Impact of Heap Leaching of Gold-Bearing Ores on the Environment
Authors:   NKMMI (GTU), Golik V.I. ,   Moscow Polytechnic University
Published: April 2024

The issue of rational use of metal-containing raw materials goes hand in hand with the problem of minimization of environmental hazards caused by new technologies, which hampers the development of metal leaching, including gold leaching. The objective of this paper is the increase the mineral reserves of gold-mining enterprises via the application of leaching technology in stacks on the condition of minimization of damage to the natural environment. The results of the study of the impact of heap leaching complex on the surrounding ecosystems are provided based on the example of the stack of the «Kazakhaltyn» mine (the Republic of Kazakhstan), formed by tails of enrichment. The technological scheme of gold leaching and the parameters of its implementation, considering the minimization of consequences potentially hazardous for ecosystems, have been recommended. The calculation of parameters of hypothetically hazardous impact of gold leaching processes is provided for a stack of 6 m height; the time of leaching is 90 days; for four sorption stages, the coefficient of through-extraction of gold is 0.65. The specifics of the version of technology implying the use of recycled water supply to prevent contact with the environment are described. The processes of leaching affecting the environment and the preventive measures have been systematized. It has been demonstrated that emergencies are local, whereas sodium cyanide under the impact of atmospheric air and solar energy reacts with the generation of volatile short-lived hydrogen cyanide. It has been proved that the process of demetallization of mining and processing tails in the stack is a measure of environmental protection; it is not more hazardous than the traditional technology of handling processing tails. Such demetallization process is worth spreading.
The Information Methods to Identify Difficult-to-Control Factors Affecting Emergency Gas Contamination in Mine Excavations
Authors:   National University of Science and Technology (MISiS), Kupriyanov V.V. , Bondarenko I.S. ,   National University of Science and Technology (MISiS)
Published: April 2024

The article is dedicated to the crucial problem of occupational safety for personnel at work and the hazardous operation of coalmines due to gas explosions. Natural, technogenic, natural & technogenic, as well as geomechanic factors causing methane accumulation in excavations and following emergency explosions have been described. These factors are classified as so-called difficult-to-control as they cannot be under control during workflows and cannot be managed by means and methods of mining production. The task of elaborating on methods of their identification has been set as the determination of signs (parameters) of emergencies serving as a source of information. The practical result of identification is the prevention of a combination of conditions and circumstances under which an accident occurs, considering the interaction with factors under control. The information about the signs of emergency in mines is inherently weak and complex. Due to the nature of physical phenomena always accompanied by noise, the numerical values of signs of emergency are random. Therefore, the description and identification of abrupt changes in difficult-to-control factors considered emergency have been performed by using entropy-probabilistic concepts and characteristics. It has been shown that the information methods of identification are based on well-known principles of the general theory of informational optimization of systems aimed at minimizing the uncertainty of solving the identification problem. The comparative analysis of the existing theoretical methods to find the optimal identification strategy has shown that with the reduction of the volume of signs specific for an emergency or their low information content as well due to noise, D-information strategies are the only possible ones. One of such strategies is based on the Shannon-Fano statistical code, whereas the other is based on the method of informational dichotomy. Testing these strategies has demonstrated their technical applicability.
Response of tomato seed germination to several extraction techniques and magnetic field exposure treatments
Authors: Shakina Visira Deva , Nuraini Anne , Nurbaity Anne
Published: April 2024

The superior seeds are indicated by clean, good germination rate, pest and disease-free. One of the problems in providing superior tomato seeds is the presence of pulp attached to the tomato seeds, leading to less clean of seed. To remove the muscus on tomato seeds, the seeds have to be extracted. Other than seeds extraction, seeds exposure also could optimize seeds growth by increasing the metabolism of the tomato. The aim of this research is to determine the best extraction technique and magnetic field exposure for obtaining high tomato seeds germination. The complete random design used in this research consist of two factors, seeds extraction and magnetic field with three time replications. The result showed that seeds extraction for 24 hours is the best treatment for improving the maximum germination percentage, growth potential, growth rate, speed growth, uniformity index than others. Magnetic exposure at 6mT is the best treatment to improve seeds maximum growth and seeds speed growth.