bluuebunny/crossref_metadata_2025 huggingface dataset:
The Role of Earth Tides in Reactivating Shallow Faults and Triggering Seafloor Methane Emissions
Authors: Sultan N. , Riboulot V. , Dupré S. , Garziglia S. , Ker S.
Published: November 2024

The role of solid Earth tide in fault reactivation has significant implications for understanding earthquake triggering, carbon sequestration, and the global carbon budget. Despite extensive research on this topic, the relationship between Earth tide and fault reactivation remains unclear. In this study, we investigate the influence of solid Earth tide on the reactivation of sub‐seabed faults, which may lead to the release of methane. We monitored the sub‐seabed temperature and pore‐fluid pressure at two sites on a fault system located in the Black Sea. Two sets of data obtained from distinct periods revealed inconsistent results. For the first set of data and despite the distance between the two sites (∼790 m), the responses in terms of temperature and pore pressure changes were synchronous (September 2021). We showed from these data that the presence of over‐pressured fluid promotes fault reactivation under Earth tide cycles, resulting in synchronized degassing events. For the second set of data recorded from the same two sites (September 2021–May 2023), we did not identify any concomitance between Earth tides and the monitored parameters. Our analyses show that discrepancies in observations could be related to the fluid discharge/recharge process. The fluid discharge observed during the first period resulted in a decrease in excess pore‐pressure, making the fault insensitive to Earth tides during the subsequent recharge period. Our data also sheds light on conflicting literature results, suggesting that the interaction between faults and Earth tides primarily depends on fluid pore pressure, a parameter rarely measured.
Accelerating Multiphase Simulations With Denoising Diffusion Model Driven Initializations
Authors: Chung Jaehong , Marcato Agnese , Guiltinan Eric J. , Mukerji Tapan , Viswanathan Hari , Lin Yen Ting , Santos Javier E.
Published: November 2024

This study introduces a hybrid fluid simulation approach that integrates generative diffusion models with physics‐based simulations, aiming at reducing the computational costs of flow simulations while still honoring all the physical properties of interest. Pore‐scale simulations enhance our understanding of applications such as assessing hydrogen and storage efficiency in underground reservoirs. Nevertheless, they are computationally expensive and the presence of non‐unique solutions can require multiple simulations within a single geometry. To overcome the computational cost hurdle, we propose a method that couples generative diffusion models and physics‐based simulations. While training the data‐driven model, we simultaneously generate initial conditions and perform physics‐based simulations using these. This integrated approach enables us to receive real‐time feedback on a single compute node equipped with both CPUs and GPUs. By efficiently managing these processes within a single compute node, we can continuously monitor performance and halt training once the model meets the specified criteria. To test our model, we generate realizations in a real Berea sandstone fracture which shows that our technique is up to 4.4 times faster than commonly used flow simulation initializations.
Self-measurement of blood pressure at home using a cuff device for change in blood pressure levels: systematic review and meta-analysis
Authors: Satoh Michihiro , Tatsumi Yukako , Nakayama Shingo , Shinohara Yukiko , Kawazoe Miki , Nozato Yoichi , Kunimura Ayako , Murakami Takahisa , Toyama Maya , Muroya Tomoko , Yagihashi Takahito , Sakima Atsushi , Abe Makiko , Arima Hisatomi , Ohkubo Takayoshi
Published: November 2024

The effect of self-measurement of blood pressure (BP) at home (home BP measurement, HBPM) has been evaluated over the past decade. This meta-analysis included the latest studies to determine whether HBPM reduced BP (PROSPERO ID: CRD42023442225). PubMed, Cochrane Library Database, and IchuShi-Web were searched for randomized controlled trials after the year 2000 which demonstrated the effect of HBPM on BP change compared with usual care (UC). Overall, 65 articles (n = 21,053; 63 based on patients with hypertension) were included. The systolic/diastolic BP reduction was significantly greater in the HBPM than in the UC group by 3.27/1.61 mmHg (95% confidence intervals: 2.40–4.15/1.14–2.07) at the end of the intervention, and I
2 values ≥ 46.7% suggested moderate-to-high heterogeneity. The funnel plots exhibited no notable publication bias (Egger’s test p ≥ 0.16). HBPM with co-interventions (such as telemonitoring) showed a stronger BP-lowering effect than without co-interventions while the effect of HBPM on BP change remained significant in the absence of co-interventions. HBPM was not associated with systolic BP changes when we combined the four studies that used a wrist cuff device for HBPM. The number of antihypertensive medications increased by 0.17 medications in the HBPM group compared with that in the UC group. There were no significant differences in body mass index changes or risk of severe adverse outcomes between the groups. Our results demonstrated a beneficial effect of HBPM in reducing BP, particularly when used in conjunction with telemonitoring or additional medical support and when employing upper-arm cuff devices.
Dataset of Smartphone-Based Finger Tapping Test
Authors: Lima Ramon Costa , da Costa Brito Felipe André , do Nascimento Rodrigo Luz , Nazaré e Silva Martins Sthephanie , Carlos Monteiro Pereira Luis , Seabra Jéssica Portal , Farias Hugo Leonnardo Chaves , Morgana Cunha da Silva Laenna , Matheus Silva de Miranda Victor , Belgamo Anderson , dos Santos Cabral André , Callegari Bianca , de Athayde Costa e Silva Anselmo , Crisp Alex , Alves Cândida Helena Lopes , da Costa Brito Lacerda Eliza Maria , Souza Givago Silva
Published: November 2024

The finger tapping test (FTT) is a neuropsychological test that measures motor speed and coordination. It involves tapping a designated surface with a specific finger as quickly as possible for a certain duration. Touchscreen of smartphones has been used as interface to record the tap, what enables to extract information about the taps. The present study represents an initiative of construction for a national Database of Smartphone-Based FTT, which includes data from 176 healthy male and female adults ranging in age from 18 to 74 years. Participants were asked to perform the FTT using one or both hands, tapping on a central area of a smartphone as many times as possible within a 30-second interval. Data were extracted using an Android application, encompassing details such as touch timing, spatial coordinates, sex, smartphone model, hand used, and age. A Python-developed web visualization tool for individual and averaged analysis. This database serves as informative foundation for a healthy adult sample and supports further exploration and international comparative analyses of FTT performance.
Internet of things (IoT) for safety and efficiency in construction building site operations
Authors: Khan Abdul Mateen , Alrasheed Khaled A. , Waqar Ahsan , Almujibah Hamad , Benjeddou Omrane
Published: November 2024

Internet of Things (IoT) technologies present transformative opportunities through connectivity of intelligent devices, environmental sensors, and integrated management systems. This study aims to investigate the benefits and impact of IoT implementation on construction sites by analyzing relationships between key factors and outcomes for safety and efficiency. Hypotheses were developed proposing positive correlations between each factor and effective IoT adoption on construction sites. Structural equation modeling analysis on survey data from construction professionals and site reports strongly validated the research hypotheses. Positive path coefficients and high statistical significance confirmed environmental monitoring (0.38), equipment management (0.343), predictive analytics and maintenance (0.222) and safety monitoring (0.369) as crucial enablers for successful IoT integration leading to safer and more productive construction operations. The findings highlight imperative focus areas and provide actionable insights for construction stakeholders on strategies to effectively leverage IoT capabilities.
A new compact potentiometric electrode for pH monitoring built upon a glass substrate with a Ce-doped SnO2 layer
Authors: Kamel Ayman H. , Al-Sabbagh Noor H. A. , Moussa Ibrahim , Obaida M. , Abd-Rabboh Hisham S. M. , Boraie Waleed E.
Published: November 2024

A novel compact potentiometric electrode specifically designed for pH monitoring, featuring a good construction on a glass substrate coated with a cerium-doped tin oxide (Ce-doped SnO2) layer.
Antibacterial and safe chitosan–graphene hydrogel films: a promising nanotherapeutic for Staphylococcus aureus wound infections
Authors: Choudhary Priyadarshani , Ramalingam Baskaran , Bose Somashree , Das Sujoy K.
Published: November 2024

Chitosan–graphene hydrogel films offer a safe and effective nanotherapeutic solution for treating Staphylococcus aureus infections.
Correction: Up-regulation of myelin-associated glycoprotein is associated with the ameliorating effect of omega-3 polyunsaturated fatty acids on Alzheimer's disease progression in APP–PS1 transgenic mice
Authors: Shao Yan , Li Fei , Zou Bo , Jin Yanling , Wang Xiaoyang , Wang Liting , Huang Youying , Xie Yu , Sun Wei , Kang Jing X. , Liu Kai , Huang Yi , Huang Wei , Wang Bin
Published: November 2024

Correction for ‘Up-regulation of myelin-associated glycoprotein is associated with the ameliorating effect of omega-3 polyunsaturated fatty acids on Alzheimer's disease progression in APP–PS1 transgenic mice’ by Yan Shao et al., Food Funct., 2024, https://doi.org/10.1039/d4fo03355h.
An advanced plasmonic bimetallic nanostar composite for ultra-sensitive SERS detection of crystal violet
Authors: Kitaw Sintayehu Leshe , Ahmed Yohannis Wondosen , Candra Andy , Wu Tsung-Yun , Anley Beyadgalem Endawoke , Chen Ying-Yu , Cheng Yu-Ting , Chen Kuan-Ju , Thammaniphit Chayaporn , Hsu Chen Chu , Wu Yi Ting , Khan Mahvash Hira , Tsai Hsieh-Chih
Published: November 2024

This study presents the synthesis and characterization of Ag/Au nanostar alloys. A 75:25 Ag/Au nanostar alloy achieved the highest SERS sensitivity for rhodamine 6G detection, emphasizing its potential for sensing applications.
Coordination complexes of PIII-doped heterobuckybowls and their applications in catalysis
Authors: Feng Lijun , Hua Xinqiang , Shang Jihai , Shao Xiangfeng
Published: November 2024

PIII-doped heterosumanenes are synthesized to show diverse coordination patterns with transition metals. The coordination complexes with Pd2+ have been proved to be promising catalysts for the Suzuki–Miyaura coupling reaction of aryl chlorides.
Novel HPMC/PEDOT:PSS nanocomposite for optoelectronic and energy storage applications
Authors: Ragab H. M. , Diab N. S. , Dawoud Jumana N. , AlElaimi Mahmoud , Aboelnaga Shimaa Mohammed , Farea M. O.
Published: November 2024

This study investigates a class of materials known as polymer nanodielectrics, which are formed by incorporating ceramic fillers into polymers.
A concise synthesis of anti-bicyclo[6.1.0]nonyne carboxylic acid
Authors: Weir Mackenzie , Vaccari Beatrice , Matthews Aidan , Turnbull Graeme , Kozhevnikov Valery N.
Published: November 2024

Synthetic availability of anti-BCN-COOH will benefit development of bioorthogonal click reagents.
Strategic intercalation of AB2O4 perovskite oxides for synergetic enhanced redox activity in sulphonated Ti3C2Tx MXene for energy storage applications
Authors: Pani Jitesh , Chaudhary Priyanka , Borkar Hitesh , Lin Meng-Fang
Published: November 2024

Flexible supercapacitors have emerged as efficient and fast energy storage devices for new generation electronics.
Plasmon-enhanced all-organic ultraviolet photodetectors with high sensitivity and long-term stability
Authors: Yao Fulong , Mao Chenlu , Wang Yue , Liu Fenghua , Wu Weiping
Published: November 2024

High-performance Ph-BTBT-12/C60 photodetectors demonstrate photoelectric detection capabilities across the UV to visible range. Device performance is enhanced by incorporating Au NPs into ITO glass substrates through a one-step annealing process.
Blockchain based intelligent disbursement in National Scholarship Portal
Authors: Samu Lifna Challissery , Khithani Neelkanth , Alve Kushl , Gambhire Vedang , Hande Atharva , Choubey Shivam
Published: November 2024

The National Scholarship Portal in India serves as a one‐stop solution for students seeking financial aid for their studies across the country. However, in this digital era, the national‐level portal faces challenges such as limited provision for only government scholarships, non‐automated systems, complex application processes, reliance on physical verifications, and delays in scholarship disbursement. This research proposes a blockchain‐based scholarship module to address these challenges and automate the entire scholarship process. The paper emphasizes upon the transformative impact by the usage of Hyperledger fabric network, which provides a fool‐proof system that streamlines the entire application process and fund disbursement. The proposed integration also ensures robust application verification, accountability of stakeholders, transparent scholarship selection criteria, automated and thorough tracking of fund disbursement, immutable transaction history, secure authorization; and stringent compliance measures. Thus, the implementation of the proposed system aims to alleviate the financial insecurities faced by students during their studies, simplify their search for scholarship opportunities, and enable them to focus more on their academic pursuits.
M‐ary differential chaos shift keying with carrier index modulation for high‐data‐rate transmission
Authors: Yu Bin , Jiang Guo‐Ping , Yang Hua , Jia Ya‐Qiong
Published: November 2024

A high‐data‐rate solution for M‐ary differential chaos shift keying (MDCSK) based on carrier index modulation is proposed in this paper. At the transmitter, the proposed system employs index selectors, Hilbert transform, and MDCSK encoders. Walsh codes are used for separating different data‐bearing wavelets. At the receiver, the proposed system adopts energy comparators and MDCSK detectors. The transmitted chaotic signals are duplicated for several times, and the averaging operation is performed on received signals to reduce noise. Theoretical bit error rate expressions are obtained over the AWGN and the multipath Rayleigh fading channels, respectively. Simulations and comparisons are performed to verify the effectiveness of the proposed scheme.
Direct design method for wideband quadruplet and higher‐order bandpass filters with a pair of transmission zeros based on explicit design formulas
Authors: Lee Juseop , Choi Hyunjong , Lee Jongheun , Song Minhyup
Published: November 2024

This paper presents a direct design approach and explicit design formulas for a wideband quadruplet bandpass filter with a pair of transmission zeros. A filter can be designed based on a filter schematic composed of only transmission lines and a short‐circuited coupled‐line section. The electrical length of all lines including the coupled‐line section is 90. The impedances of all lines can be calculated by explicit design formulas given in terms of the normalised coupling values in a coupling matrix of a quadruplet filter, which differentiates this work from existing design approaches. A fourth‐order filter example is illustrated for demonstrating the practicality of using the presented structure and design formulas. This paper also discusses the expansion of the presented direct design approach for higher‐order filter designs.
Hybrid islanding detection method using PMU‐ANN approach for inverter‐based distributed generation systems
Authors: Sarhan Mohammad Abu , Barczentewicz Szymon , Lerch Tomasz
Published: November 2024

An essential component of guaranteeing the stability and safety of electricity distribution networks is islanding detection. In this work, a novel method for islanding detection which combined both phasor measurement units (PMU) and artificial neural network (ANN) is proposed. Using PMU measurements, the technique extracts features including phasor voltage, voltage frequency, and voltage rate of change of frequency (ROCOF), which later are fed into an ANN classifier. Using a huge dataset of more than a hundred thousand observations of both islanding and non‐islanding scenarios, testing was done on 24 distinct types of inverters in compliance with PN‐EN 62116 protocol criteria. The tests were carried out using Regenerative Grid Simulator Chroma 61815‐powered system which was connected in parallel to adjusting RLC load; the tested inverters were linked to a Photovoltaic Panels Simulator, the National Instruments cRIO‐9024 measuring equipment was used to carry out the measurements, MATLAB and LabVIEW were used for analyzing the data and results. With a testing accuracy of 99.05% and a training accuracy of 99.34%, the results demonstrate a high degree of accuracy. This work offers a practical solution for problems that occurred due to islanding phenomenon in power networks which can enhance the system dependability and security.
Towards winding deformation assessment from vibration signals using an optical sensor
Authors: Seifaddini Najmeh , Sekongo Bekibenan , Fofana Issouf , Akre Simplice , Chehri Abdellah , Ouhrouche Mohand
Published: November 2024

In the era of Industry 4.0, there is a growing emphasis on the digitization of electrical networks. Over recent decades, the integration of interconnected digital technologies, including sensors and communication systems, within electrical substations has emerged as a significant driver. Consequently, there is an increasing need for precise online monitoring of critical assets such as power transformers to enhance grid reliability. This study utilizes an optical‐based Fiber Bragg Grating (FBG) sensor to capture vibration signals from a custom‐designed single‐phase transformer model, specifically developed for experimental purposes. This model offers a unique advantage with its ability to interchangeably simulate healthy and distorted winding sections without causing damage. Using a high current source, the laboratory model was subjected to three different current levels across six distinct configurations to monitor winding displacements. The results from this investigation highlight the FBG sensor's capability to accurately distinguish between healthy and distorted winding sections. Furthermore, this feasibility study represents a significant step forward in the online mechanical assessment of transformer windings, moving away from traditional methods that require transformers to be taken out of service for inspection. This innovative approach shows considerable potential for implementing effective real‐time monitoring of winding deformation in power transformers.
Dynamical confirmation of a black hole in the X-ray transient Swift J1727.8−1613
Authors: Mata Sánchez D. , Torres M. A. P. , Casares J. , Muñoz-Darias T. , Armas Padilla M. , Yanes-Rizo I. V.
Published: November 2024

The X-ray transient Swift J1727.8−1613 ended its 10-month discovery outburst in June of 2024, when it reached an optical brightness comparable to pre-discovery magnitudes. With the aim of performing a dynamical study, we launched an optical spectroscopy campaign with the GTC telescope. We detected the companion star and constructed its radial velocity curve, yielding a binary orbital period of Porb = 10.8038 ± 0.0010 h and a radial velocity semi-amplitude of K2 = 390 ± 4 km s−1. This results in a mass function of f(M1) = 2.77 ± 0.09 M⊙. Combined with constraints on the binary inclination, it sets a lower limit on the compact object mass of M1 > 3.12 ± 0.10 M⊙, dynamically confirming the black hole nature of the accretor. A comparison of the average spectrum in the rest frame of the companion with synthetic stellar templates supports a K4V donor that is partially (74%) veiled by the accretion disc. A refined distance measurement of 3.4 ± 0.3 kpc, together with the astrometric proper motion and the systemic velocity derived from the radial velocity curve (γ = 181 ± 4 km s−1), supports a natal kick velocity of vkick = 210−50+40 km s−1, at the upper end of the observed distribution.
Drawing on Multi-stakeholder’s Insights to Develop Vital Peatland Social Policy Model In Riau Province, Indonesia
Authors: Dharma Anton Budi , Sujianto Sujianto , Yustina Yustina , Yuliani Febri , Adianto Adianto , Marlinda Pebriana
Published: November 2024

The continued existence of the peatlands in Riau is of vital importance to the region’s ecological and economic well-being. However, the underlying cause of these issues is the inadequate management of the peatlands. The objective of this project is to develop a social policy model that can address issues related to peatlands. The multi-stakeholder study, which formed the basis for this approach, engaged a diverse range of stakeholders, including representatives from government, business, indigenous communities, and non-governmental organizations. This study employed a descriptive qualitative methodology. The data employed in this study were derived from earlier studies and a range of research findings. The study’s findings indicate that the implementation of an effective social policy for peatland management in Riau can contribute to the protection of peatlands. The creation of this model should ensure social fairness and provide all stakeholders with a fair voice in the decision-making process regarding the management of peatlands. This will help to prevent and sustain environmental harm for future generations. It is recommended that the government, businesses, and indigenous groups in Riau work together to address issues linked to peatlands that arise from the application of the policy model using an appropriate social policy approach.
Development of Policies for Preventing and Handling Workplace Sexual Harassment: A Systematic Literature Review
Authors: Salabay Desy Natalia , Nurhaeni Ismi Dwi Astuti , Wahyunengseh Rutiana Dwi
Published: November 2024

This study aimed to evaluate the trends in research topics on workplace sexual harassment policies and identify new policy models that are effective in preventing and addressing this issue. The method used was a Systematic Literature Review (SLR) in accordance with the PRISMA 2020 steps, with an analysis conducted on 216 articles found in the Scopus database. The results of the study indicate that there are five main clusters covering medical and clinical aspects, gender issues, women’s status, psychological approaches, legal aspects and organizational policies, and violence and health in the workplace. The study also revealed that social movements such as #MeToo have had a significant influence on increasing awareness of and research on workplace sexual harassment. Recommendations include the preparation of clear written policies, regular education and training for employees, development of transparent complaint procedures, and adequate support for victims. In addition, corrective and preventive actions must be applied consistently, and an organizational culture that supports gender equality must be developed. The use of technology and the regular evaluation of policies are also recommended to ensure their relevance and effectiveness. With these steps, organizations can create safer, fairer, and more inclusive work environments for all employees.
Literature Review of HIV/Aids Education Literacy in Indonesia
Authors: Dimara Yemima Inanse Orpa , Yuliani Sri , Haryati Rina Herlina
Published: November 2024

HIV/AIDS education literacy is an effort to overcome the spread of HIV/AIDS, especially in Indonesia which has a fairly high prevalence rate. This study uses a traditional literature review method to examine HIV/AIDS education literacy in Indonesia. This method includes collecting and critically analyzing Scopus journals, including health organization reports and government publications. The results of the study indicate that HIV/AIDS literacy in Indonesia still faces various challenges, such as social stigma, lack of access to accurate information and limited educational resources. Several initiatives have been carried out to improve literacy, such as awareness campaigns through mass media, education programs in schools, and training for health workers. However, the effectiveness of these initiatives varies depending on community acceptance and support from the authorities. This study concludes that improving HIV/AIDS literacy in Indonesia requires a more comprehensive and coordinated approach, involving various stakeholders, including the government, non-governmental organizations, and local communities. Recommendations for further research include a more in-depth evaluation of existing education programs and the development of new strategies that are more effective in disseminating information about HIV/AIDS prevention and treatment.
Exploring Education Futures: Insights from Cooperative Teachers on Elementary School Supervision
Authors: Elihami Elihami , Sitonda Syawal , Sudirman M. Yunus
Published: November 2024

This study examines the perspectives of 90 cooperative teachers engaged in early childhood teacher education practicums in Indonesia. Through questionnaires and group discussions with 14 of these teachers, the research delves into the generational backgrounds and professional training of cooperative instructors, emphasizing their diverse supervisory approaches. These approaches, categorized into six distinct types, reveal a range of perspectives: while many cooperative instructors express concerns about current teacher education programs, they also show a strong commitment to fostering the professional development of student teachers. The findings underscore a growing emphasis on “freedom and dignity of the child” within educational practices, suggesting a need for public higher education institutions to adopt more innovative approaches. This study offers valuable insights for creating a modern, crisis-resilient educational environment. Further research is essential to establish comprehensive theoretical frameworks on how practicums and supervision are shaped by complex interactions between individuals and teacher education systems, particularly given the limited attention to program variance and sociocultural contexts in teacher education.
Surili (Presbytis comata) Feed Plant Selection: An Exploration in Gunung Gede Pangrango National Park
Authors: Dharma Agus Pambudi , Mardiastuti Ani , Iskandar Entang , Rianti Puji
Published: November 2024

Surili play an important role in the ecosystem, especially in the preservation and dispersal of seeds, and ensuring that the ecosystem remains balanced. Not many studies have been conducted on the various plant species consumed by surili in various areas of TNGGP. The purpose of this study is expected to provide very important information to support surili conservation plans and habitat management. This study was conducted in two resorts in the division I Cianjur of TNGGP: Tegallega Resort and Sarongge Resort. The study took place from March 2023 to August 2024. Data were collected by directly observing surili feeding activities in eight transects, each 2.5 to 3 km long, for 16 months. The types of plants eaten and the parts eaten. The data collected were recorded and analyzed descriptively. Surili results showed that there were 11 species of food plants in Tegallega Resort and 7 species in Sarongge Resort. However, three species were dominant in both resorts: Castanopsis argentea, Liquidambar excelsa, and Schima wallichii. Surili in Tegallega Resort ate leaves 78.57%, fruits 14.29%, and flowers 7.14%, while surili in Sarongge Resort only ate leaves (100%).
Data-Driven Forecasting of Lecturer Needs for a Growing Master’s Program at Universitas Lancang Kuning, Indonesia
Authors: Wardi Jeni , Nasution Nurliana , Lubis Nurhayani , Wahyuni Syafriani , Sarius Dian Purnama
Published: November 2024

Many higher education institutions in Indonesia struggle to maintain the ideal lecturer-to-student ratio, which is essential for ensuring educational quality and compliance with government regulations. This issue is particularly pressing for the Master of Management program at the Graduate School of Universitas Lancang Kuning, where rapid student growth poses challenges in aligning faculty resources with demand. This study aims to forecast the number of permanent lecturers needed by 2027 to support sustainable program development. This applied research provides strategic recommendations for policymakers regarding faculty recruitment to maintain educational quality. Secondary time series data from the past 10 periods, sourced from the Higher Education Database (PDDikti), were analyzed using the semi-average method to identify trends. The findings indicate that by the even semester of 2027, the projected student enrollment in the program will reach approximately 860, necessitating an ideal number of 43 permanent lecturers to meet the government-mandated lecturer-tostudent ratio of 1:20 for academic master’s programs. This research introduces a forward-looking, data-driven framework for planning faculty recruitment, enabling institutions to align their academic resources with projected student growth effectively. Ensuring an optimal lecturer-tostudent ratio is critical for upholding educational standards and preventing potential regulatory sanctions that could impact program accreditation and quality.
Co-pyrolysis of oil palm empty fruit bunches (EFB) biochar with high-density polyethylene (HDPE) for liquid fuel production
Authors: Sunarno Sunarno , Padil Padil , Mutamima Anisa , Nurfatihayati Nurfatihayati , Sitanggang Johan , Aritonang Viccy Wando , Utama Panca Setia
Published: November 2024

The increasing number of vehicles has led to elevated demand for petroleum-based fuels, which are non-renewable energy sources. Consequently, the development of alternative energy sources has become crucial. In this study, the co-pyrolysis process was conducted to produce biooil as an alternative energy source. Co-pyrolysis is a thermal degradation process performed in the absence of oxygen that involves biomass and other materials. This study investigates the use of empty fruit bunches (EFB) biochar and high-density polyethylene (HDPE) with a high hydrogen-tocarbon effective ratio (H/C)eff as raw materials for co-pyrolysis. This study aims to examine the effects of torrefaction pretreatment on EFB, the impact of varying the EFB biochar to HDPE ratio (100:0, 75:25, and 55:45), and the influence of co-pyrolysis temperature (400, 450, and 500 oC) on the yield and characteristics of produced bio-oil. Experiment results indicated that torrefaction pretreatment reduced ash content, while the addition of HDPE and temperature increase improved bio-oil yield. The best operating condition with feed EFB biochar to HDPE ratio of 55:45 at a temperature of 500°C which produced the highest yield of 28.2% and optimum characteristic bio-oil with density of 0.88 g/mL, viscosity of 1.28 cP, pH of 3.7, and a calorific value of 47.34 MJ/kg.
Observing Trends on Sexual Violence Policies in Universities: A Bibliometric Analysis
Authors: Afifah Hasna’ Nur , Nurhaeni Ismi Dwi Astuti , Haryanti Rina Herlina
Published: November 2024

This research explores the rising academic focus on sexual violence policies within universities, underscoring its alignment with the UN’s Sustainable Development Goals on gender equality, as advocated by the UN Women. This research aims to analyze trends in research publication topics related to sexual violence policies in universities. Using the Scopus database and VoSViewer software, this research method employs a systematic literature review and bibliometric analysis. The combination of these two approaches successfully answered the research questions. Investigations and searches on the Scopus database produced 100 articles from 1991 to 2023 related to the specified keywords. Unique terms were discovered, which were then visualized and identified for future research opportunities. This study’s novelty lies in its dual-method approach, which provides a robust framework for understanding the discourse around sexual violence policy in academic settings and highlights opportunities for advancing research toward impactful solutions.
The Thematic CSR: An Alternative Model for Connecting the Sustainable Development Goals (SDGs)
Authors: El Amady M. Rawa
Published: November 2024

The challenge of aligning corporate initiatives with community needs and global development goals remains significant. PT Pertamina EP I Rantau faced the issue of integrating Corporate Social Responsibility (CSR) efforts effectively to address local societal needs while contributing to broader Sustainable Development Goals (SDGs). This research discusses the thematic CSR implemented by PT Pertamina EP I Rantau in Aceh Tamiang, Aceh Province, Indonesia, through the Rumah Kreatif Tamiang (RKT) program, which focuses on disability inclusion. The purpose of this study was to identify which SDG targets could be met through the thematic CSR model applied in the RKT program. This qualitative research utilized desk studies based on secondary data, supplemented by field observations, in-depth interviews, and focused group discussions. The data were analyzed descriptively using a domain approach to highlight strategies and develop program models. The findings showed that the RKT program enriched stakeholder theory by providing an ecosystem-based thematic framework. The program was strongly aligned with 11 SDG goals and had the potential to accelerate the achievement of these targets in Aceh Tamiang. This program could serve as a model for CSR citizenship for other companies.
Quantitative Landslide Risk Assessment for Residential Slopes in Indrapuri, Pekanbaru, Indonesia: A Blueprint Sustainable Housing
Authors: Misriani Merley , Joleha Joleha , Elianora Elianora , Shalahuddin Muhammad , Novan Andre , Gianda Rama
Published: November 2024

Hilly areas that are cut and then filled to be used as land for housing development are very important to conduct landslide risk investigations. Previous studies have not investigated whether housing developments in Indrapuri, Pekanbaru, pose a significant landslide risk. This study investigates the risk of landslides on residential slopes to protect infrastructure in safe and sustainable housing development. This study uses quantitative methods, including conducting soil tests in the field, soil tests in the laboratory, and analyzing slope stability against landslide hazards. Slope stability identification was carried out at 4 location points, from slope heights of 2 m, 3 m, 4 m, and 5 m, assuming that the soil layer at each height was uniform. The slope of the slope at the 4 points of the location is the same, which is 68°. The identification of slope safety factors was carried out using the Fellenius method. The results of slope stability analysis using the Fellenius method show that the slope is in a safe condition with a safety factor value between 1.65 4.54. The recommendation from the results of this study is that housing development can be continued. However, even though it is within safe limits, the author recommends not to increase the height and slope of the slope so that the safety of the slope is reduced
A hydrodynamic model for the hydraulic jump and internal wave generation over a bottom topography, the case of the San Esteban sill in the Gulf of California
Authors: Azofeifa-Chaves Danalie de los Angeles , Velázquez Muñoz Federico Angel , Filonov Anatoliy , Moreles Miguel Angel
Published: November 2024

We are concerned with the mathematical and numerical modeling of hydrodynamic processes in the Gulf of California. The dynamic is driven by a forcing tide producing an inflow and outflow from the mouth of the Gulf to the northernmost part. When the tidal flow passes through the area of the Islands in the central part of the Gulf, it channels, increasing its speed. On the San Esteban Sill, a hydraulic jump is formed, then internal waves and solitons are released. Based on observational field campaigns, and hydrostatic 3D modeling, it is claimed that this is a cause–effect phenomenon. Hydrostatic models are unable to produce the groups of soliton-like waves. Consequently, we develop a non-hydrostatic version, a 2D vertical-slice model with the inclusion of density effects. Its hydrographic characteristics, such as stratification and bathymetric features, are modeled with appropriate initial and boundary conditions. The numerical solution is by a pressure projection method. The method is tested on benchmark problems and then applied to the Gulf of California. The data of the observational field campaigns are satisfactorily reproduced by the numerical results.
Comparison of two approaches for solving a fuzzy system describing the degradation kinetics of pesticides in plant uptake models
Authors: Espitia-Cruz Leidy V. , Villamizar-Roa Élder J.
Published: November 2024

Chemical control in agriculture includes the use of chemical agents whose concentrations in the harvest products decrease over time. We analyze mathematically the decrease of pesticide residues in potato tubers, and estimate the involved parameters to predict the evolution of pesticide residual after the last spraying. First, we propose and solve a fuzzy initial value problem (FIVP) associated with a fuzzy differential equations system modeling the pesticide concentration in potato tubers. Second, we apply our model in a real situation, where the evolution of the concentration of chemicals is required, by considering two approaches. In the first one, based on a small set of field data, we use a polynomial regression (LOESS) to input new data and estimate the parameters involved in the FIVP and thus, we determinate the evolution of the concentration of the thiamethoxam, a pesticide used on potato crops. In the second approach, we design a Takagi–Sugeno–Kang model to approximate the degradation of thiamethoxam concentration, by defining a set of fuzzy inference rules based on the data provided by LOESS regression. These two approaches show a similar and good behavior, even having few fuzzy data. Our analysis can be applied in a large class of dynamical systems.
Research on pricing and return strategy of platform provider under full-reduction promotion
Authors: Zhang Yangguang , Zou Fang , Peng Wei , Song Sujuan , Wang Chong
Published: November 2024

Based on the consumer speculative purchase problem in the full-reduction promotion scenario, considering the heterogeneity of strategic consumers’ valuation of the initial purchase intention commodity and the add-on item, as well as the possibility that consumers may be dissatisfied with the add-on items after receiving the goods, a single-period pricing decision model is constructed, and the optimal pricing strategies of the platform provider are obtained in the two cases of disallowing the return of the goods and providing a money-back guarantee, respectively. It is found that optimal original pricing exists for both commodities in both models making the platform provider most profitable. Furthermore, since the promotional discount rate is an exogenous variable, the optimal promotional price for the combination of the two commodities is obtained. It was also found that increasing the degree of relatedness of the two commodities and consumer satisfaction with the add-on items can effectively stifle speculative purchasing behavior. By comprehensively comparing the optimal profits of platform providers in the two cases, we find that neither model is absolutely dominant and gives the critical conditions for platform providers to choose different return strategies. Finally, the influence of relevant parameters on the optimal pricing strategy and profit of the platform provider under the two models is analyzed through numerical examples, which provides a reference for the platform provider to formulate the optimal strategy according to their own situation. Finally, the influence of relevant parameters on the optimal pricing strategy and profit of the platform provider is analyzed through specific data, which provides a reference for the platform provider to determine the optimal pricing and return strategy according to the operating conditions.
Electrostatic interaction between dislocations in a superconductor
Authors: Miloshenko V. E. , Poshchupkin A. M. , Shunin G. E.
Published: November 2024

We investigate the electrostatic contribution to the interaction energy of two parallel edge dislocations and its change due to decreased electron screening at the superconducting transition. It is shown that the decrease of screening leads to a much greater change in the single dislocation energy than the spatial inhomogeneity of the order parameter.
Plasma “sound” in the electron gas of a magnetic semiconductor
Authors: Balkarei Yu. I. , Nikitov V. A.
Published: November 2024

It is shown that in the spin-polarized electron plasma of a wide-band antiferromagnetic semiconductor or semimetal in a magnetic field there may exist plasma oscillations with an acoustic dispersion law. The velocity and attenuation of these waves is determined by the external magnetic field.
Exciton–magnon absorption of light in noncollinear antiferromagnets at T ≠0
Authors: Eremenko V. V. , Litvinenko Yu. G. , Shapiro V. V. , Verdyan A. I.
Published: November 2024

Electric dipole exciton–magnon absorption of light has been discovered and studied in antiferromagnets at the frequencies of the purely excitonic transition and of the “hot” magnon satellite induced by the disruption of the antiparallelism of the sublattice magnetic moments as well as by the thermal population of the lower energy levels.
Conduction-electron spin resonance in Hg1–x CdxTe solid solutions
Authors: Bratashevskii Yu. A. , Tyutyunnik V. B. , Aver’yanov K. S. , Nesmelova I. M.
Published: November 2024

Conduction-electron spin resonance in Hg1–x CdxTe has been examined at 4.2°K and 76·109 Hz for a sample with an electron concentration of about 1015 cm−3. The free-electron g factors derived from the spin resonance are in satisfactory agreement with values calculated from Kane's model.
Temperature dependence of the nonequilibrium field penetration depth in a superconductor
Authors: Dmitriev V. M. , Khristenko E. V.
Published: November 2024

Measurements are reported on the temperature dependence of the step structure in the current–voltage curves for long narrow tin films. Measurements have been made of the temperature dependence of the penetration depth δE for nonequilibrium longitudinal electric fields, which defines the quasinormal N region in the S–N current stratification. It is shown that inelastic and elastic collision mechanisms are important, and the predominant one is determined by the difference between the actual temperature T and the critical temperature Tc. An expression is derived that describes closely the observed dependence of δE on the temperature and the specimen parameters. The inelastic relaxation time is estimated as 8·10–10 sec.
Surface superconductivity in layered compounds
Authors: Minenko E. V. , Kulik I. O.
Published: November 2024

The features of surface superconductivity onset in layered superconductors with Josephson and correlation layer interactions are studied. It is shown that in comparison with ordinary type-II superconductors the situation in layered compounds is more complicated. The region of surface superconductivity is determined by the ratio of the correlation and Josephson interactions, TU and TJ. The possibility is shown of direct determination of the constants TU and TJ in layered metals from experiments on surface superconductivity.
Effect of plastic deformation on low-temperature specific heat and superconductivity of rhenium
Authors: Polovov V. M. , Tulina N. A. , Gavrilov N. M.
Published: November 2024

The low temperature (4.2–50°K) specific heat of plastically deformed rhenium single crystal is studied, and a positive shift in the critical temperature for the superconductive transition (δTc/Tc0∼60%) is observed. Plastic deformation produces an increase in specific heat which may be characterized by a reduction in the characteristic Debye temperature reaching 6% in greatly deformed specimens. The change in Tc with plastic deformation may be explained by renormalization of the electron-phonon interaction parameter λ with the aid of the well known McMillan-Hopfield relationship λ = const/ M< θ2> (<θ2>, mean square phonon frequency; M, atomic mass).
Electrical resistance, magnetic susceptibility, and specific heat of layered compounds 2H-NbSe2 and NbSe2-WSe2 solutions
Authors: Shchetkin I. S. , Kalikhman V. L. , Sereda Yu. P.
Published: November 2024

A study is made of the temperature dependence of the electrical resistance from the superconductivity transition up to 300°K, and the specific heat in the interval T ≈90–130°K for the layered compounds NbSe2 and solutions Nb1–xWxSe2 (x=0.05, 0.10, 0.15). The two-stage character of the structural transition with generation of a charge density wave and also the effect of tungsten impurities on the temperature of the structural and supercondctivity transitions is discussed.
Characteristics of electron spectrum and coupling constants in vanadium
Authors: Pan V. M. , Prokhorov V. G. , Shevchenko A. D. , Dovgopol V. P.
Published: November 2024

Experimental data on the magnetic susceptibility, specific heat, positron annihilation, and superconducting transition temperature are used to calculate, by three independent methods, the electronic density of states at the Fermi level, the effective electron mass in the conduction band, the electron-phonon coupling constant, and the Coulomb pseudopotential for vanadium.
Development of a scale for recruitment of forest fire workers using confirmatory factor analysis
Authors: Şafak İsmail
Published: November 2024

Background Wildfire severity is increasing yearly owing to climate change, and fires pose serious threats to forest fire workers (FFWs). Effective management of their recruitment process is vital to mitigate risks, ensuring ongoing firefighting efficacy. Aims This study aimed to develop criteria to be used in the recruitment process of FFWs engaged in fighting forest fires in Turkey and to assess the validity and reliability of these. Methods A survey consisting of 5 questions and 30 items was designed to establish a recruitment scale for FFWs. A total of 682 personnel serving in ground teams participated in the survey. The recruitment scale was developed using Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA). Keyresults The FFWs recruitment scale that has been developed comprises 23 criteria. These criteria are collected into five factors, which are suitability for work, physical and mental condition, education, working conditions and self-management. Conclusions The EFA model explains 67.18% of the total variance. Goodness-of-fit indices collectively indicate that the CFA model fits the observed data very well. A multidimensional, reliable and valid recruitment scale has been designed. Implications The recruitment scale for FFWs can also be used in the preparation of national occupational standards and qualification criteria.