bluuebunny/crossref_metadata_2025_split huggingface dataset:
Entrepreneurship Skills Preference among Undergraduates’ Technology Education Students for National Development during COVID-19 Pandemic
Authors: Taiwo S. A . , Onasanya Temitayo Omolara , Onasanya Samuel. A. 
Published: February 2024

During covid-19 social distancing requirements makes limited in class teaching. To respond to these changes there has been a rapid uptake in remote and digital learning entrepreneurship education methods. This study analyzes the Entrepreneurship skills preference among undergraduates’ technology education students for National Development during covid-19 Pandemic. The study adopted for the study is survey research. The area covered in this research work is undergraduate technology education students offering technology education courses. The population for the study consists of 200 undergraduate students’ technology education students. All the 200 undergraduate technology students were participants. Descriptive statistics and Inferential statistics were used to answer the research questions with the aid of stastistical product and service solution (SPSS) version 20.0 at 0.05 level of significant. The result indicated that there was no significant difference in the mean rating of male and female on entrepreneurship skills preference among undergraduate technology education students for national development during covid-19 pandemic. The study concluded that various Problem influencing the preferred entrepreneurial skills by students during COVID-19 Pandemic. The study recommended that students should embrace entrepreneurial skill that cannot be restricted by any crisis.
Communication between Astronauts and Nasa Deep Space Network: A Conversation Analysis
Authors: Aristha M. Rouzhi , Putri Dian Marisha , Mono Umar 
Published: February 2024

In the field of conversation analysis, conversation is one way to approach social order. Conversations are not the seemingly disorganized and random objects they seem at first. This is a special locus of interaction where changes in speakers are repeated (occur), the parties speak at the same time. Gapless and non-overlapping transitions are common. The aim of this study is to analyze aspects of conversation analysis use in communication between Astronauts and NASA Deep Space Network (DSN) under the framework. This study use qualitative descriptive method is applied in this research. The data are collected by transcribe their utterances from Youtube and transcribing their utterances directly into written text. The result of this study shows that 6 types of adjacency pairs, from the data analysis found there are 47 utterances that consist of adjacency pairs. From the findings, there are 7 requesting – agreement, 11 assessment – agreement, 17 question – answer, 1 compliment – acceptance, 1 complaint – apology, 10 offer - acceptance for adjacency pairs.
Modelling Stakeholders’ Capacity for Urban Housing Development: A Developing Country’s Perspective
Authors: Chisumbe Sampa , Aigbavboa Clinton , Thwala Wellington , Mwanaumo Erastus 
Published: February 2024

Abstract
The main aim of the study was to model stakeholders’ capacity for urban housing development from a developing country’s perspective, using Zambia as a case study. The study used a quantitative methodology and recruited 214 respondents from various organizations concerned with the planning and development of human settlements in Lusaka, Zambia. The structured questionnaire used for data collection contained nine indicator variables informed by literature. The collected data was analysed using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA), and goodness-of-fit was utilized to assess the acceptability of the model using a two-index technique. The findings revealed that stakeholders’ capacity is explained by four variables, namely: ensuring adequate staffing levels in institutional stakeholders; community empowerment in planning practices; development of essential construction skills; as well as provision of technical support to communities on housing. The paper recommends, among other things, the need to fully engage and build the capacities of communities so that they can effectively participate in housing development. The findings have practical implications for improving housing in the global south. It advances the promotion of capacity building as a prerequisite for driving housing development in line with the new urban agenda.
Integrable emulation of a floating incremental/decremental inverse memristor for memristor bandwidth extension
Authors: Bhardwaj Kapil , Narayana Ravuri , Kalra Dheeraj , Srivastava Mayank 
Published: February 2024

Abstract
The article explores the compact emulation of the inverse memristor through a circuit-based approach. It introduces a floating emulator architecture that incorporates a dual output OTA (Operation Transconductance Amplifier) and DVCC (Differential Voltage Current Conveyor), along with two grounded passive elements, to achieve the emulation of an inverse memristor. The utilization of grounded resistance allows for tunability over the realized behaviour. A key contribution of this research is the novel application of the inverse memristor to extend the operating frequency range of any memristor emulator circuit. Validation of the proposed emulator circuit, in both incremental and decremental modes, along with its application, is conducted using PSPICE-generated simulation results in the 0.18 µm TSMC CMOS technology. Additionally, an inverse memristor emulator configuration employing the IC LM13700 is presented, and its functionality is tested through a breadboard implementation.
Cleaning of tungsten tips for subsequent use as cold field emitters or STM probes
Authors: Košelová Zuzana , Horáková Lenka , Burda Daniel , Allaham Mohammad M. , Knápek Alexandr , Fohlerová Zdenka 
Published: February 2024

AbstractThis study investigates the crucial process of cleaning cold field emission electron emitters and scanning tunnel microscopy (STM) probes, particularly focusing on tungsten tips. The cleanliness of these tips is essential for maintaining optimal cathode properties, preventing impurities that can significantly affect the emission process. Various cleaning methods, including macroetching, ammonia cleaning, and hydrofluoric acid (HF) cleaning were explored and compared by scanning electron microscopy. The macroetching method, involving a mixture of hydrochloric acid, nitric acid, and hydrogen fluoride, proved to be too reactive, causing significant material removal and altering the tip’s structure. Ammonia cleaning did not significantly improve or harm the samples. However, oxide islands appeared in some areas, suggesting the potential formation of ammonium tungsten oxide. HF cleaning, specifically at 20% and 50% concentrations, demonstrated effectiveness in removing tungsten oxides without damaging the tip. Pre-cleaning with water and ethanol proved beneficial for subsequent HF refinement. Results suggest that HF is the most suitable method for oxide removal but a rinse with water is essential for removing residual sodium hydroxide. To maintain optimal properties, it is crucial to apply a less reactive layer quickly or transfer the tips to a water/ethanol bath to prevent oxidation.
Exposure Buildup Factors in Concrete, Lead for Point Isotropic and Unidirectional Photon Sources in the Energy Range from 10 to 50 MeV
Authors: Alhagaish I. , Aqili A. K. 
Published: February 2024

Abstract
The exposure buildup factors in concrete and lead for a point isotropic and flat unidirectional photon source in the energy range from 10 to 50 MeV were determined using Monte Carlo simulation “FLUKA” software. The exposure buildup factors were also obtained for different material thickness up to 40 mpf. The calculations were done in a barrier geometry where the contributions of all photon-matter interactions were taken into account in the performed calculations. Amendments for the barrier-geometry effect for both materials under study were deduced. The results showed that barrier-effect amendments were independent of the material thickness, material type, and energy of the photon source
Sodium Citrate and Polyvinylpyrrolidone Captured Silver Nanoparticles Transfer to Organic Solvents
Authors: Mikelsone J. , Vembris A. 
Published: February 2024

Abstract
Silver nanoparticles (NPs) have gathered extensive attention due to their properties – chemical stability, good conductivity, catalytic activity, and antimicrobial activity. This makes NPs suitable for potential applications in the development of new technologies in the field of photonics, electronics, medicine, biochemical sensing, and imaging. Nanoprisms have local surface plasmon resonance starting from visible to near infra-red spectrum, broadening the possibilities of their applications. Ag NPs typically are synthesized in aqueous solution but the handling of NPs often requires their dispersion into nonpolar solvents and their mixing with organic compounds. Thus, nanoparticle transfer to organic media is essential for application in the field of emission enhancement due to NPs – organic semiconductor interaction. A shell changing method for NP tranfer was successfully used with a high transfer rate, but rather low stability. The previously proposed sonochemical method for NP transfer from aqueous to organic polymeric media is extended to different organic solvents. The ultrasonic method is suitable to obtain stable NPs in both organic solvent and organic solvent/organic compound solutions, and it can be stored at ambient conditions for at least several months. Transfer efficiency is suficient and NPs remain stable in an organic solvent like chlorobenzene, anisole, dichloromethane. The method has potential in NPs containing thin film preparation because sonication prevents the agglomeration of clusters.
Charge Assessment for Nitrate-Based Salt as a Phase Change Material for a Medium-Temperature Latent Storage Tank
Authors: Ismail  , Widodo Y. I. , Rahman R. A. 
Published: February 2024

Abstract
The present study assesses the heat characteristic of the nitrate-salt mixture as a phase change material (PCM) for a medium-temperature latent storage system (LSS). Two binary and ternary mixtures are evaluated, which demonstrate different thermal behaviour. The highest melting and latent heat capacity is obtained by KNO3(0.4)/NaNO3(0.6) at 223.8 °C and 161.5 J/g. However, it has a higher supercooling degree with a partial phase transition between 217.6 °C and 251.5 °C, making it unfeasible for a medium-temperature LSS tank. The ternary mixture (TM) with NaNO2(0.4)/KNO2(0.53)/NaNO3(0.7) demonstrates a stable phase transition with minimum partial phase transition (22.1 °C) and suitable heat of fusion (98.1 J/g). Further evaluation through static thermal profiling demonstrates that the TM has a notable performance during solid-sensible charge with a charge level indicator (CLI) around 45.3 %–49.1 %. The TM can be charged up to 85.7 % until the end stage of the phase transition. It promotes a better storage capacity with suitable performance since the system can be charged effectively at a suitable temperature range (< 160 °C) for various applications. The micrograph observation indicates some dispersed particles and local agglomeration, which makes phase stabilization as an advantageous method to promote a stable phase change process. The TM can be considered a suitable PCM for a medium-temperature LSS tank that allows for a better solar thermal renewable system operation.
Solvability of Parametric Elliptic Systems with Variable Exponents
Authors: Ouannasser Anass , El Hachimi Abderrahmane 
Published: February 2024

Abstract
In this paper, we study the solvability to the left of the positive infimum of all eigenvalues for some non-resonant quasilinear elliptic problems involving variable exponents. We first prove the existence of at least a weak solution for some non-variational systems by using a surjectivity result for pseudomonotone operators. Furthermore, under additional conditions, we show that the solution is unique and provide examples. Second, we deal with non-resonant gradient-type systems and obtain existence by using a variational approach.
Advancing Auscultation Education: Signals Visualization as a Novel Tool for Enhancing Pathological Respiratory Sounds Detection
Authors: Pastusiak Anna Katarzyna , Hafke-Dys Honorata , Kociński Jędrzej , Szarzyński Krzysztof , Janeczek Kamil 
Published: February 2024

Abstract

Introduction: Auscultation remains a pivotal diagnostic modality for various respiratory pathologies. To augment its clinical relevance, the continuous expansion of our understanding of pulmonary acoustics, coupled with the advancement of auscultation recording and analysis methodologies, is imperative.

Material and methods: We investigated how the bimodal presentation of auscultatory signals (sound and visual cue perception) influences the subjective efficacy of pathological respiratory sound detection, which is a critical step in the development of a new auscultation tool.
Recordings of pediatric breath sounds were presented in three different forms - audio only, visual representation only (spectrogram) or audiovisual (both together). The F1-score, sensitivity and specificity parameters were calculated and compared to the gold standard (GS). Subsequent to the detection experiment, participants completed a survey to subjectively assess the usability of spectrograms in the procedure.

Results: Over 60% of all responders ranked the spectrogram as important (40.8%) or very important (21.1%). Moreover, 11.3% of all participants found this new form of presentation of auscultation results to be more useful than the evaluation of sound only. The addition of visual information did not statistically significantly change the evaluation of the sounds themselves, an observable trend implies that enhancing audio recordings with visualizations can enhance detection performance. This is evident in the 4 p.p. and 2 p.p. sensitivity increments for physicians and students, respectively, even without specialized visual training.

Conclusions: Our research findings indicate that the integration of spectrograms with conventional auditory assessment, albeit based on observed trends and survey responses, presents a promising avenue for improving the precision and quality of medical education, as well as enhancing diagnosis and monitoring processes.
Pain and Cognitive Load As Predictors of Absenteeism in Industry
Authors: E Araujo Jonas Lenzi d , De Araujo James Lenzi , Gehlen Tatiane Bacchi , Stramari Anderson Sestilio , Catapan Marcio Fontana , Deschamps Fernando 
Published: February 2024

Purpose: This study delves into the impact of pain and cognitive load on industrial absenteeism, aiming to highlight the importance of these factors in workforce management and productivity enhancement.

Theoretical framework: Anchored in the biopsychosocial model, this research contends that absenteeism is intricately linked to the interplay between pain and cognitive load. Utilizing the Numeric Rating Scale (NRS) and the NASA Task Load Index (NASA-TLX), it seeks to elucidate their combined influence on absenteeism.

Method/design/approach: In a pilot study, NRS and the NASA-TLX were utilized for data collection, with a third-party dataset incorporating seven predictor variables and absenteeism as the dependent variable. Statistical analysis involved the Shapiro-Wilk Test for data normality and the Mann-Whitney U Test for non-normal distributions. Generalized Linear Models were applied to analyze the impact of variables on absenteeism, including multivariate, univariate and combined models. Model performance was evaluated using BIC, AIC, pseudo-R², LogLik, and AUC, with the Delong method for AUC comparison.

Results and conclusion: Pain emerged as a significant absenteeism predictor. The integrated model displayed enhanced discriminatory capacity, underscoring the pronounced interrelation between pain, cognitive load, and absenteeism. These insights advocate for holistic management strategies encompassing both health and occupational aspects.

Research implications: This study reaffirms the crucial role of pain and cognitive load in industrial absenteeism and highlights the importance of a multifaceted, data-driven approach for effective intervention strategies.

Originality/value: This study offers unique perspectives on absenteeism by merging pain and cognitive load assessments, presenting a comprehensive method for understanding and mitigating its impact on the industrial workforce.
Kaji Eksperimental Karakteristik Fatik Komposit Berpenguat 2 Lapis Serat Nenas dan Orientasi Serat 45 Derajat atau 90 Derajat
Authors: Chandra Devi , Hamdi Chairil , Dahlan Hendery , Satria Eka , Adi Saputra Dendi , Havendri Adly 
Published: February 2024

The aim of this study is to experimentally investigate the effects of fiber orientations on the fatigue strength, fatigue life and surface fracture of 2 ply Pineapple Leaf Fiber Composite. Fatigue test specimens with 45o and 90o fiber orientation are loaded using rotary bending fatigue test machine at several load levels. Fatigue strength and fatigue life are measured during fatigue test and fracture surface of fatigue specimens are observed using microscope. The results show that 2 ply Pineapple Leaf Fiber Composite with 45o fiber orientation have highest fatigue strength than 2 ply Pineapple Leaf Fiber Composite with 90o fiber orientation. The shape of the surface fracture in the test specimen varies widely which is generally caused by Multiple Origins or several fault starting points at once which can erode or tear the surface of the specimen before the specimen finally fails or breaks.
Modern molecular genetic methods and approaches used in the preconception carrier screening
Authors: Насыхова Ю.А. , Карпович Л.А. , Двойнова Н.М. , Осиновская Н.С. , Глотов А.С. 
Published: February 2024

Преконцепционный скрининг (ПС) – это комплекс мероприятий, направленных на установление групп высокого риска и профилактику рождения детей с генетическими заболеваниями в этих группах. В рамках программ преконцепционного генетического скрининга выполняется исследование образцов биоматериала будущих родителей, которое обычно включает цитогенетическое исследование для исключения нарушений числа и структуры хромосом, а также анализ скрытого носительства моногенных болезней с аутосомно-рецессивным или X-сцепленным типами наследования. ПС является важнейшим инструментом оценки риска наследственной патологии в семьях на этапе планирования беременности и позволяет повысить информированность потенциальных родителей о наследственных факторах, связанных с беременностью, а также вовремя сформировать тактику планирования и ведения беременности для предотвращения рождения больного ребенка. В данной статье рассматриваются стратегии, подходы и методы исследования, которые в настоящее время используются при выполнении преконцепционного генетического скрининга носительства, а также обсуждаются результаты внедрения программ ПС в мире.
Preconception carrier screening (PS) is a set of measures aimed at preventing the birth of children with genetic diseases and identifying high-risk groups. As part of preconception genetic screening programs, studies of biomaterial samples of future parents are carried out, which usually includes a cytogenetic study to exclude chromosome abnormalities, as well as analysis of the heterozygous carriage of monogenic autosomal recessive or X-linked diseases. PS is the most important tool for assessing the risk of hereditary pathology in families at the stage of pregnancy planning, which allows potential parents to increase awareness of hereditary factors associated with pregnancy, as well as to formulate timely strategy for planning and managing pregnancy to prevent the birth of a sick child. The article reviews the strategies, approaches, and methods that are currently used in preconception genetic screening, and discusses the impact of the carrier screening programs in the world.
Familial case of hereditary transthyretin amyloidosis with polyneuropathy (ATTR amyloidosis)
Authors: Лашевич П.Д. , Матулевич С.А. 
Published: February 2024

Приводится описание семейного случая наследственного транстиретинового амилоидоза. Проведено клиническое обследование и молекулярно-генетическое тестирование пациента 50 лет, его родного брата 44 лет и его сына 30 лет с симптомами полинейропатии, нарушением пищеварения и мочеиспускания. У всех троих пациентов обнаружен патогенный вариант нуклеотидной последовательности с.199G>C (p.(Gly67Arg), p.(G67R) в экзоне 2 гена TTR в гетерозиготном состоянии. Указанный вариант описан при наследственном транстиретиновом семейном амилоидозе. Установление точного диагноза пациентам с симптомами полинейропатии неясного генеза позволит эффективно проводить профилактические мероприятия, минимизировать риск осложнений и провести своевременное медико-генетическое консультирование семьи с целью прогноза потомства.
A family case of hereditary transthyretin amyloidosis is described. A clinical examination and molecular genetic testing of a 50-year-old patient, his 44-year-old brother and his 30-year-old son with symptoms of polyneuropathy, indigestion and urination were carried out. All three patients had a pathogenic variant of the nucleotide sequence c.199G>C (p.(Gly67Arg), p.(G67R) in exon 2 of the TTR gene in the heterozygous state. This variant was described in hereditary transthyretin familial amyloidosis. Еstablishing an accurate diagnosis for patients with symptoms of polyneuropathy of unclear genesis will allow effective preventive measures, minimize the risk of complications and conduct timely medical and genetic counseling for family.
An analysis of political speeches on racism by president Donald Trump during his presidency
Authors: Alsaqer Brooj Nasser Abdullah 
Published: February 2024

This paper attempts to illuminate the ways in which racist ideology is represented and articulated in everyday discourse. Since racism has been and continues to be, a driving force behind segregation in the United States, American rhetoric has been selected as the data for this investigation. This research analyses the speeches of US President Donald Trump on racism towards Muslim people through linguistic, social, and cultural perspectives. The study is an attempt to cast light on the strategies that are used express racism in the President’s speeches. To achieve the research objectives, the researcher used the qualitative approach. The data was collected from six major speeches on racism made by President Donald Trump and downloaded from YouTube and the Euronews Arabic online channel. Fairclough model (1995) is used as the main analysis model in this research. The results show that the self-other schema was heavily evident in Trump's speech, in which he effectively portrayed himself as a national hero who wants to rescue America from suffering and disaster while painting Muslims in a bad light. This study also revealed Trump's transparent effort to promote his virtuous persona by using a number of rhetorical methods meant to instill undesirable traits to Muslims, such as pronounced Islamophobia. The results show that Trump utilizes demagogic language to establish a gap between Muslims and Americans, which he then uses to metaphorically exclude individuals of other ethnic identities, particularly Muslims.