bluuebunny/crossref_metadata_2025 huggingface dataset:
Involving certain socio-demographic groups of the population in active entrepreneurship as a factor of sustainable regional economies
Authors: Ilyushnikova T. A.
Published: September 2024

The article examines priority groups of   the population (socially vulnerable, women entrepreneurs, young and social entrepreneurs) engaged in entrepreneurial activities, including through the conclusion of a  social contract, as a   factor of   the sustainability of   regional economies. The article is   aimed at  analysing the regional structure of   these population groups and their support in  individual subjects. The methodology of   the study is   based on   the use of   general scientific methods (analysis, synthesis, comparison). The main results of   the work have showed that supporting participation of   the above-mentioned groups socially integrates them, stimulating economic growth, regional and national development. In  addition, it  increases the level of   economic competitiveness, expands entrepreneurial opportunities, and creates a  favourable climate for the successful functioning of   market entities. The scope of   application of   the results obtained during the study is   based on   the possibility of   using them while developing mechanisms for increasing the involvement of   the considered priority population groups in   order to  achieve a   given level of   sustainability of   regional economies, which also determines the prospects for further research on  this problem. The dependence of   the level of   sustainable development of   regional economies and their competitiveness on   the level of   involvement of   these groups in   entrepreneurship has been established.
Issues of LNG producing companies entering the eastern markets and ways to overcome them
Authors: Ostroumov F. A. , Afanasiev V. Ya.
Published: September 2024

This article is  devoted to  identifying the features of   the  еastern liquefied natural gas (hereinafter referred to   as LNG) markets and new opportunities for entering them. The purpose of   this article is  to study the problems of   LNG producing companies entering the еastern markets and ways to   overcome them. The work analyses the current state of   the  еastern LNG markets and their development prospects,   existing barriers, including those caused by  the conflict in   the Middle East, and possible consequences of   the escalation of   the conflict. The authors consider the issues of   developing localised infrastructure and technological solutions that increase the efficiency of   supply chains, meet specific market needs and provide a  competitive advantage in   the  еastern markets. Logframe and comparative analysis, systems approach, and modelling have been used in   the research process. As a   result, the study has identified a  number of  challenges for LNG producers, primarily related to   geopolitical complexities, regulatory environment, and market development dynamics, to   innovations, ecological norms, and understanding regional tensions that may impact supply chains and trade agreements. The findings of  the article can be   used when domestic companies develop strategies to  enter the  еastern LNG markets with existing contracts or  expand them.
Development and translation of a method of clinical utility for LC-MS/MS analysis to detect SARS-CoV-2 antigens from ONP swabs and saliva
Authors: Anderson N Leigh , Bailey Alistair , Barran Perdita , Brownbridge Philip , Cain Kathleen , Carling Rachel S , Cramer Rainer , Dalton R Neil , Daly Matthew E , Davis Kayleigh , Doykov Ivan , Dueñas Maria Emilia , Emmott Edward , Eyers Claire E , Gajbhiye Akshada , Geary Bethany , Gupta Pankaj , Hällqvist Jenny , Hartmane Evita , Heales Simon , Heunis Tiaan , Heywood Wendy , Hollywood Katherine A , Jenkins Rosalind E , Jones Donald JL , Keevil Brian , Krenkel Henriette , Lane Dan , Lane Catherine S , Lellman Sophie , Liggett Ellen N , Meng Xiaoli , Mills Clare , Mills Kevin , Nalbant Atakan A , Ng Leong L , Nicholas Benjamin , Noels Dan , Pearson Terry W , Pitt Andrew , Pope Matthew E , Porter Andrew , Preston George W , Razavi Morteza , Shapanis Andrew , Sidgwick Frances R , Singh Raj , Skipp Paul , Speiss Reynard , Spiewak Justyna , Tierney Anna L , Trivedi Drupad , Trost Matthias , Unwin Richard D , Wainwright Luke , Walton-Doyle Caitlin , Whetton Anthony D , Wilks Sandra , Yip Richard
Published: September 2024

During the COVID-19 pandemic, development of diagnostic tests was vital to chart the course and to reduce the impact of the infection. Continued testing and surveillance of vaccine escape will continue for years to come which presents an opportunity to integrate such testing into clinical biochemistry laboratories that form part of integrated healthcare testing. Here we describe a protocol for a targeted mass spectrometry based proteomic assay (COVIDCAP) developed to detect SARS-CoV-2 peptides from oro-nasopharyngeal swabs (ONP) and saliva. This uses novel SISCAPA antibodies bound to magnetic beads and subsequent analysis of captured and purified SARS-CoV-2 nucleocapsid (NCAP) peptides. The method involves immediate deactivation of the sample using an ethanolic solution. This simultaneously inactivates the virus and denatures viral proteins at sampling in contrast to the approach for RT-PCR testing, with benefits for the assay as well as for downstream processing. A plate-based preparation of the samples involving acetone precipitation followed by a short tryptic digestion and subsequent immunocapture allows LC-MS detection and quantification of peptides from the NCAP protein, in a 3-minute inject-to-inject assay with an LOD of 20 attomoles from starting sample. For 576 ONP swab samples taken as exemplars here, the sensitivity and specificity of this analysis is shown to be 97.0% and 96.6% respectively.
Isomerization Cationic Ring-Opening Polymerization of CO2-Based Disubstituted-δ-Valerolactone
Authors: Lin Yuling , Chen Kaihao , Bai Tianwen , Ling Jun , Ni Xufeng
Published: September 2024

The challenging ring-opening homo-polymerization of α-ethylidene-δ-vinyl-δ-valerolactone (EVL), de-rived from CO2 and 1,3-butadiene, has aroused ex-tensive attention in consideration of economic effi-ciency and functionalization potential. Here, we achieve the first cationic ring-opening polymeriza-tion (CROP) of EVL, yielding well-defined polyester PEVL with number average molecular weight up to 12.8 kg/mol and low dispersity of 1.2. The obtained PEVL contains two kinds of structural units derived from EVL and three kinds of alkenyl groups, indicat-ing an isomerization during propagation. The isom-erization is necessary to the propagation, evidenced by density functional theory (DFT) calculation and unavailable CROP of the semi-hydrogenated EVL de-rivative without δ-vinyl group (α-ethylidene-δ-ethyl-δ-valerolactone). The fast intramolecular transfer reaction and slow initiation result in the cyclic to-pology fidelity of PEVL, providing the first example of quantitative formation of cyclic polyester in CROP. PEVL is degradable and recyclable, possessing a low glass transition temperature (Tg) of -33.6 ℃, while the product after modification with 1-octadecanethiol exhibits a melting point (Tm) of 42.2 ℃.
Roles of Water Molecules in STING Activation: A Computational Perspective
Authors: Gates Hannah , Payne Rachel , Pfeifer Haley , Le Lyly , Crivelli Silvia , Watanabe Masakatsu
Published: September 2024

The cyclic GMP-AMP synthase (cGAS) - stimulator of interferon genes (STING) pathway is crucial in the innate immune response, particularly in cancer immunotherapy. Despite promising preclinical results, 5,6-dimethylxanthenone-4-acetic acid (DMXAA) showed limited efficacy in human clinical trials due to species-specific differences in STING activation. This study investigates these differences by analyzing the binding dynamics and affinities of various STING-ligand complexes using molecular dynamics (MD) simulations and binding free energy calculations. We confirmed that specific point mutations, notably G230I and S162A/Q266I, significantly improve DMXAA’s binding affinity to human STING (hSTING), replicating the behavior observed in mouse STING (mSTING). Explicit solvent MD simulations revealed the essential role of water molecules in the binding site. Bridge water molecules, forming hydrogen bonds between the ligand and the protein, were significant in stabilizing the cyclic GMP-AMP (cGAMP) system, influencing local dielectric constants. Additionally, for DMXAA systems, we found that the mutations lowered the interaction energies required for ligand binding by reducing the number of water molecules and localizing them to specific locations within the binding site. These findings deepen our understanding of STING-DMXAA interactions and highlight potential pharmacological modifications required to enhance STING-targeted therapies. Integrating structural biology, computational simulations, and thermodynamic analyses offers a robust framework for advancing STING-based therapeutic development.
Lewis Acid-Catalyzed 1,3-Dipolar Cycloaddition of Bicyclobutanes with Isatogens: Access to Indoxyl-Fused Bicyclo[3.1.1]heptanes
Authors: Deswal Shiksha , Das Rohan , Sarkar Deeptanu , Biju A T
Published: September 2024

The 'escape from flatland' concept has gained significant traction in modern drug discovery, emphasizing the importance of three-dimensional molecular architectures, which serve as saturated bioisosteres of benzenoids. Bicyclo[1.1.0]butanes (BCBs), known for their high ring strain and numerous reactivity, offer a simple yet effective method for synthesizing these bicyclic frameworks. Although (3+2) annulations involving BCBs have been extensively studied, the 1,3-dipolar cycloaddi-tion of BCBs leading to (3+3) annulation has received limited attention. Herein, we report the Lewis acid-catalyzed 1,3-dipolar cycloaddition of BCBs with isatogens allowing the synthesis of biologically relevant indoxyl-fused bicy-clo[3.1.1]heptanes. Moreover, the reaction can be performed in one-pot by the in-situ generation of isatogens from 2-alkynylated nitrobenzenes. Additionally, preliminary mechanistic and photophysical studies of the (3+3) annulated prod-ucts, and experiments towards asymmetric version of this reaction are also provided.
Burnt plastic (pyroplastic) from the M/V X-Press Pearl ship fire and plastic spill contain compounds that activate endocrine and metabolism-related human and fish transcription factors
Authors: James Bryan , Medvedev Alexander , Medvedeva Lyubov , Martsen Elena , Gorman Kristen , Lin Benjamin , Makarov Sergei , Aluwihare Lihini , de Vos Asha , Reddy Christopher , Hahn Mark
Published: September 2024

In May 2021, the M/V X-Press Pearl ship fire disaster led to the largest maritime spill of resin pellets (nurdles) and burnt plastic (pyroplastic). Field samples collected from beaches in Sri Lanka nearest to the ship comprised nurdles and pieces of pyroplastic. Three years later, the toxicity of the spilled material remains unresolved. To begin understanding its potential toxicity, solvent extracts of the nurdles and pyroplastic were screened for their bioactivity by several Attagene FACTORIAL bioassays (TF, NR, and AquaTox), which measured the activity of a combined 70 human transcription factor response elements and nuclear receptors and 6-7 nuclear receptors for each of three phylogenetically distinct fish species. Extracts of the pyroplastics robustly activated end points for the human aryl hydrocarbon receptor (AhR), estrogen receptor (ER), pregnane X receptor (PXR), peroxisome proliferator-activated receptor (PPAR), retinoid X receptor (RXR), and oxidative stress (NRF2), and the potential for several others. This bioactivity profile of the pyroplastics was most similar (similarity score = 0.96) to that of probable human carcinogens benzo[b]fluoranthene and benzo[k]fluoranthene despite the extracts being a complex mixture of thousands of compounds. The activity diminished only slightly for extracts of pyroplastic collected eight months after the spill. The AquaTox FACTORIAL bioassay measured the activation of ERa, ERb, androgen receptor (AR), PPARa, PPARy, and RXRb for human, zebrafish (Danio rerio), Japanese medaka (Oryzias latipes), and rainbow trout (Oncorhynchus mykiss), revealing species-specific sensitivities to the chemicals associated with the pyroplastics. These findings provide needed information to guide long-term monitoring efforts, make hazard assessments of the spilled material, and direct further research on pyroplastic, an emerging global contaminant.
Optimizing Fetal health Classification with PCA and SMOTE Techniques
Authors:   Department of Computer Science & Engineering Sri Jayachamarajendra College of Engineering (SJCE) Mysuru, India, K S Yashaswini
Published: September 2024

Cardiotocography (CTG) is used in pregnancy to monitor fetal heart rate and contractility, especially in the third trimester, to ensure fetal well-being and to detect early signs of distress CTG a inconsistency may indicate the need for further research and possible interventions. The objective is to increase the accuracy and reliability of cervical health classification by integrating machine learning algorithms with traditional CTG data. This approach seeks to improve the early detection of fetal distress to identify timely medical interventions. The system combines CTG data collection with machine learning algorithms to identify fetal health risks. It uses transducers to monitor fetal heart rate and contractions. Machine learning models are used to analyze CTG data, such as random forest, logistic regression, decision tree and KNN, the results showed that the random forest model outperformed the others, achieving an accuracy of 97.58 %.
AI-POWERED IMAGE ENHANCEMENT IN FORENSIC APPLICATIONS: CHALLENGES AND OPPORTUNITIES
Authors:   Department Computer Engineering, College of Engineering, ALIraqia University,  Baghdad, IRAQ, Alahmar Haeder Talib Mahde
Published: September 2024

Recent progress in machine learning (ML) and computer vision has markedly enhanced the performance of automated facial recognition systems. Nonetheless, forensic applications frequently face issues with poor-quality and low-resolution images that pose challenges even to the most advanced facial recognition technologies. This research explores the potential of neural-based image enhancement and restoration techniques to recover degraded images while maintaining original correspondences for legal use. We evaluate super-resolution and deconvolution methods across two comprehensive and varied facial datasets. Our study employs twelve distinct GAN- and diffusion-based enhancement techniques. Our results offer insights and recommendations for the effective application of image enhancement in forensic facial recognition, highlighting the advantages and potential limitations of these advanced technologies.
CALIDAD DEL SERVICIO Y SATISFACCIÓN DE LOS CLIENTES EN UNA TIENDA COMERCIALIZADORA DE CHICLAYO
Authors: Cavero Ballona Evelyn del Cielo , Heredia Hoyos Deili Anayeli , Delgado Human Carlos Iván , Jiménez de La Cruz Daleshka Elizabeth , Valverde Vílchez Carlos Alberto
Published: September 2024

El estudio se centra en analizar cómo la calidad del servicio influye en la satisfacción de los clientes en una tienda comercial en Chiclayo en 2024. Para ello, se establecieron tres objetivos específicos. En primer lugar, se evaluó el nivel de calidad del servicio de la tienda, encontrando que el 54% de los encuestados lo considera "alto", destacando la credibilidad y la rapidez de respuesta como puntos fuertes. En segundo lugar, se midió la satisfacción de los clientes, con un 51% reportando una satisfacción alta, resaltando la amabilidad del personal y la limpieza del local, aunque se mencionaron mejoras necesarias en la reducción de tiempos de espera. Finalmente, se analizó la relación entre la calidad del servicio y la satisfacción del cliente, encontrando una fuerte correlación positiva (0,72), lo que sugiere que mejorar la calidad del servicio puede incrementar la satisfacción del cliente. El estudio concluye que una mejor calidad del servicio no solo aumenta la satisfacción del cliente, sino que también es esencial para fomentar la lealtad y asegurar el éxito sostenible del negocio.
INTELIGENCIA ARTIFICIAL Y MARKETING 5.0 EN LOS EMPRENDIMIENTOS JUVENILES DE UNA UNIVERSIDAD DEL NORTE DEL PERÚ
Authors: Anssuini Morales Juan Miguel , Centurión Hoyos Sonia Ivett , Míñope Cumpén Luis David , Vásquez Rojas María Luciana
Published: September 2024

La investigación aporta significativamente a varios Objetivos de Desarrollo Sostenible (ODS). Este estudio fomenta el crecimiento económico inclusivo y sostenido (ODS 8) al potenciar la competitividad de los emprendimientos juveniles mediante la adopción de inteligencia artificial y marketing 5.0. Además, impulsa la innovación y modernización tecnológica (ODS 9), integrando herramientas avanzadas. También, enfatiza en la educación de calidad (ODS 4) mediante una base sólida de forma teórica y práctica que prepara a los jóvenes. De igual manera, prioriza alianzas estratégicas (ODS 17) entre el ámbito académico y empresarial a fin de impulsar prácticas actualizadas y sostenibles en el mercado.
En tal lineamiento, el objetivo general es analizar la relación entre la Inteligencia artificial y el Marketing 5.0 en los emprendimientos juveniles de una universidad del norte del Perú, 2024. También, la metodología es de tipo aplicada, alcance correlacional, diseño no experimental, corte transversal y enfoque cuantitativo. Respecto a los resultados, se alcanza una correlación positiva muy fuerte entre la inteligencia artificial y marketing 5.0, pues la significancia es 0,000 > 0,05 y el Rho de Spearman es 0,903. Por ello, se concluye que se debe integrar la inteligencia artificial y marketing 5.0, para crear experiencias personalizadas.
ESTRATEGIAS ORGANIZACIONALES Y MANEJO DE EMOCIONES DE LOS COLABORADORES EN UNA EMPRESA DE TRANSPORTES
Authors: Acosta Flores Karen Lizeth , Fernández Tello Leonela Analí , Llatas Dávila Frank Jhosmell , Salazar del Águila Angelo David , Siancas Manay Cielo Asdaly
Published: September 2024

El trabajo tuvo como finalidad analizar la relación entre las estrategias organizacionales y el manejo de emociones percibida por los colaboradores de una empresa de transportes en Chiclayo. Para su alcance se desarrolló una investigación de enfoque correlacional de tipo aplicado, de diseño no experimental con corte transversal, y para recolectar información fue necesario hacer uso del cuestionario constituido por un conjunto de 12 ítems a través de la escala tipo Likert, también se utilizó como técnica la encuesta, el mismo que estuvo dirigido a una población de 60 colaboradores. De tal manera se examina la relación entre las estrategias organizacionales y el manejo de emociones de los colaboradores en una empresa de transportes en Chiclayo durante el año 2024. Los resultados revelan que entre las variables se percibe es ,910 como correlación positiva muy alta, de tal modo se considera que existe un buen manejo de estrategias y emociones. Asimismo, entre las dimensiones de las variables se refleja los resultados en la dimensión estrategias competitivas ,862, de tal modo, en innovación y adaptabilidad una correlación de ,846, finalmente en recursos humanos ,867 dando como resultado una correlación positiva muy alta capacidad de los empleados para manejar sus emociones en el entorno laboral, lo cual puede contribuir a un ambiente de trabajo más eficiente y satisfactorio.
Risk Factors for Primary Hypertension
Authors: Juliansyah Elvi , Masan Lea , Haryanti Yunida , Sunarti Sunarti
Published: September 2024

Hypertension is a deadly disease caused by high blood pressure, causing damage to the kidneys, heart, and brain. This study aims to determine the risk factors for hypertension related to family history, food, eating regularity, and physical activity with the incidence of primary hypertension in the community in Sintang District. This research method is a quantitative study with a cross-sectional method design, the population in this study was 699 people with a total sample of 97 respondents. The sampling technique used was a simple random sampling technique. The results of this study indicate that there is a significant relationship between family history and the incidence of hypertension, p-value of 0.001<(p-value=0.05) and OR of 4.800; there is a significant relationship between the type of food and the incidence of hypertension, p-value of 0.005<(p-value=0,05) and an OR of 4.680, there is a significant relationship between regular meals and the incidence of hypertension, p-value of 0.040< (p-value=0.05) and OR of 3.520, and there is a significant relationship between physical activity and the incidence of hypertension, p-value of 0.003< (p-value=0.05) and OR of 4.308. In conclusion, family history, type of food, regular food, and physical activity are related to the incidence of hypertension, therefore it is recommended that people who have a history of hypertension sufferers can regulate their diet and do physical activity regularly.
AS REFORMAS CONSTITUCIONAIS SOB AGENDA/DOUTRINA/(IR)RACIONALIDADE NEOLIBERAL E SUAS CONTRADIÇÕES COM A PROMOÇÃO DO ESTADO DE BEM-ESTAR SOCIAL PRETENDIDA PELA VIGENTE CONSTITUIÇÃO DA REPÚBLICA FEDERATIVA DO BRASIL
Authors: Aguilera Raissa Maria Fernandez Nascimento , Martins Bisneto Evandro Borges
Published: September 2024

A presente pesquisa pretende investigar a (in)compatibilidade das principais reformas constitucionais, com traços neoliberais, para a concretização do estado de bem-estar social. Valendo-se de análise teórico-normativa, o trabalho, primeiramente, aborda a periodização do Estado de bem-estar social, partindo de uma perspectiva global até uma análise local. Posteriormente, o estudo analisa as principais reformais constitucionais com viés neoliberal que ocorreram na histórica constitucional brasileira. Por fim, apresenta as considerações finais do ensaio, para demonstrar a existência de empecilho para a concretização do Estado de bem-estar social em virtude das reformas constitucionais pautadas na agenda neoliberal no Brasil. Logo, trata-se de uma pesquisa exploratória do fenômeno, com caráter teórico-descritivo e viés qualitativo, que é proposto dentro de uma perspectiva crítico e reflexiva sobre a agenda neoliberal e seus efeitos deletérios no Estado de bem-estar social, sendo tal compreensão crítica, alicerçada nos referenciais utilizados, pouco explorada pelas pesquisas que tratam sobre este fenômeno e, assim, possuindo originalidade neste campo de pesquisa. Utiliza-se o método dedutivo, o método de procedimento histórico-comparativo e a técnica de pesquisa da documentação indireta.
Call for Papers. Addressing Capability Challenges in Public Management
Authors: Plimmer Geoff , Cho Wonhyuk , Naschitzki Annika
Published: September 2024

Policy Quarterly is pleased to announce a call for papers for a special issue entitled ‘Addressing Capability Challenges in Public Management’. The New Zealand public sector faces challenges that are common internationally: rising demand, limited resources, and growing complexity in a more volatile, challenging and uncertain world, as well as polarisation in broader society. It also has some unique characteristics, including the contested role of the Treaty of Waitangi, a reset after a post-Covid 19-induced spending boom and a recent change in government.
Research on the Interactive Impact of Transportation Systems on Socio-Economic Development
Authors: Yang Jintao , Liu Zhuo , Wan Shengkai , Zhou Gangtong , Sun Hekai
Published: September 2024

This paper aims to explore the interactive impact between transportation systems and socio-economic development, employing Structural Equation Modeling (SEM) to analyze data from 31 provincial-level administrative regions in China from 2013 to 2022. It comprehensively considers key indicators from the economic, social, and transportation sectors. The paper constructs a model encompassing 5 latent variables and 15 observed variables. Through in-depth analysis, it reveals the promoting role of transportation systems on economic growth and social development, as well as the demand for transportation system construction and optimization driven by socio-economic development levels. The results indicate that an efficient transportation system can not only directly drive economic growth but also indirectly promote social development by improving social welfare and enhancing quality of life. This paper provides new insights into understanding the complex relationship between transportation systems and socio-economic development and holds significant implications for policymakers in optimizing transportation infrastructure to foster economic and social development.
Research on Supplier Selection of Pharmaceutical Enterprises under the Dual Carbon Target
Authors: Wang Peng , Wang Yongkun
Published: September 2024

With the proposal of national carbon peak and carbon neutrality targets, green supply chain management has become one of the important means of reducing carbon emissions. Based on elaborating on the connotation of new quality productivity, this article analyzes the supplier selection problem of pharmaceutical enterprises under the dual carbon target. A pharmaceutical supplier evaluation index system has been established from five aspects related to low-carbon and environmental protection, including technological innovation, research and development capabilities, digitization, intelligent production, environmental protection technology, and so on, with five primary indicators and 18 secondary indicators. Secondly, a game theory combination weighting method combining the G1 method and entropy weight method is used to determine the weights of indicators. A pharmaceutical supplier evaluation model is established by combining the matter element extension model. A company is used as an example to evaluate its 8 candidate suppliers and select the best supplier. Finally, corresponding measures are proposed to promote the healthy and sustainable development of pharmaceutical enterprises.
Sociological Analysis of Family Factors in Adolescent Internet Addiction
Authors: Yang Ningjing
Published: September 2024

Objective: To explore the relationship between family factors and adolescents’ Internet addiction, and to propose corresponding measures to solve the problem. Methods: 141 adolescents were surveyed online using Young’s Internet addiction questionnaire, APGAR family function analysis and other questionnaires. Results: 68 adolescents (48%) had internet addiction. The findings showed that inharmonious relationships with parents, lack of parental companionship, lack of equal communication with parents, inappropriate parental education, and family dysfunction were risk factors for adolescents’ Internet addiction. Conclusion: Internet addiction is an important problem affecting children’s lifelong development, in which family factors play a key role.
Reimagining Mathematics: Examining the Relationship Between Mathematics Self-Efficacy and STEM *Achievement in Underrepresented K–12 Students through Participation in Community-Based STEM Programs
Authors:   , Vance Joanna
Published: September 2024

While many barriers are encountered along an underrepresented marginalized (URM) student’s pathway to STEM *achievement, mathematics comprehension and self-efficacy are considered significant barriers in the pursuit of advanced STEM coursework, degrees, and professional careers (Gutierrez, 2002; Su et al., 2020; Williams et al., 2016). Notably, there is a significant underrepresentation of URM students across all STEM fields. Mathematics is widely considered to be the most marginalizing subject within STEM. As a field, it prioritizes “merit” and individual accomplishment, discounts the collective and community-based culture of URM students, and subsequently, further diminishes students’ sense of math self-efficacy (Gutierrez, 2013). This mixed-methods study utilized pre- and post-test surveys, longitudinal *achievement data, and semi-structured interviews to investigate the relationship between third- through eighth-grade student mathematics self-efficacy in a five-day community-based STEM program, the relationship between students’ mathematics self-efficacy and *achievement, and to learn more about student and staff experiences during math-infused STEM programs. Students’ math self-efficacy was operationalized using five categories of survey questions: expectancy beliefs, growth mindset, utility value, student mindset, and motivational beliefs. The survey results indicated an average positive gain between the pre-and post-test questions of 10.3%. The results indicated that students had significantly more positive responses in post-survey than pre-survey questions regarding utility value (i.e., “I use math every day in my life”; p < 0.001) and expectancy belief scores (i.e., “I can do hard math”; p < 0.01). Students who had *achievement levels that “did not meet standards” demonstrated a significant increase between pre- and post-survey responses (p = 0.001), while students in the “meets” and “exceeds” standards groups displayed a positive increase between pre- and post-survey results.
Analysis of Short-selling Effects Using KOSPI200 and KOSDAQ150 Indexing
Authors: Kim Hohyun , Kim Hyeong Joon
Published: September 2024

Financial regulators often react to crises by restricting short-selling to stabilize the stock market. In response to the COVID-19 pandemic, the Korean government banned short-selling in 2020. Since 2021, it has allowed partial resumption only for stocks indexed in KOSPI200 and KOSDAQ150. This unique short-selling regime in Korea makes newly indexed or excluded stocks experience exogenous variations in their short-selling availability when the constituents of the two indices are updated. Using this quasi-natural experimental setting, we examine the impact of short-selling permission and ban. The results show that short-selling permission enhances stocks’ price efficiencies while short-selling permission and ban do not strongly influence stock return or volatility. Overall, this paper provides empirical evidence supporting the positive role of short-selling, further casting doubts on the reasons behind banning short-selling.
The Implementation of Role Models in Students’ Writing Descriptive Text in SMKN 1 Kab.Wajo
Authors: Fadilah Nur , Dollah Syarifuddin , Muhayyang Maemuna
Published: September 2024

This research is pre-experimental in one-group-pretest-postest design that aimed to find out whether or not the implementation of role models improved the students' descriptive writing skills in SMKN 1 KAB. Wajo and students’ interest. The sample of this research is 23 students of a class at the ten grade students in SMKN 1 KAB. WAJO in academic year 2021/2022. To get data, the researcher gives a pre-test before the treatment. The treatment that has been given to students is to explain material regarding descriptive text in 4 meetings, the researcher explains the components of writing, explains what role models are, and several types of role models. Thus treatment result can be known to be more accurate because it can compare the condition before given the treatment. After that, the data are analysed using SPSS 25.0. The result showed that the students descriptive writing text for X AKL students of SMK Negeri 1 Wajo before applying the treatment (pre-test) are categorized as very poor with an mean score of 76,96. Meanwhile, the results of students descriptive writing test for class X students of SMK Negeri 1 Wajo after applying the Treatment (post-test) were categorized as quite good with an mean score of 85,61. Moreover, the results of students interest for X AKL students of SMK Negeri 1 Wajo before applying the treatment (pre-test) are categorized as very poor with an mean score of 70,65. Meanwhile, the results of students descriptive writing test for class X students of SMK Negeri 1 Wajo after applying the Treatment (post-test) were categorized as quite good with an mean score of 84,74. It can be proven by the hypothesis value was lower than P (0.000 ˂ 0.05) which means (H1) was accepted. Therefore, it is concluded that role models improve the writing skill of the eleventh-grade students of SMK Negeri 1 Wajo. Keywords— role model, descriptive text, writing skill
The Use of Microsoft Excel Application for Administrative Employees at the Ministry of Religion in Gowa
Authors: Resky Andi Nur , Tahir Muhammad , Luhriyani Seny
Published: September 2024

The aim of this research was to discover the perception of administrative employees at the Ministry of Religion in Gowa regarding the use of the Microsoft Excel application, as well as the types of work that use Microsoft Excel and how the data or work is processed using Microsoft Excel at the Ministry of Religion in Gowa. The research method used is a descriptive qualitative method with data collection through interviews and data analysis carried out through data collection, data condensation, data presentation, and conclusion/verification steps. The results show that the majority of administrative employees of the Ministry of Religion in Gowa have a positive perception of the use of the Microsoft Excel application. The Ministry of Religion affairs employees acknowledges that the Microsoft Excel application helps in completing administrative tasks, especially in employee data management. Work that is commonly done with Excel includes grouping data, making calculations, processing documents, and making attendance lists, and policies. In the Diniyah Education and Islamic Boarding Schools (PD Pontren) field, Excel is used to process letters and received documents, check and classify data, and type Excel formulas. The processed data is sent through the WA application (WhatsApp), the Kemenag website, or the institution's email due to changes in flow caused by the pandemic. Based on these results, the Microsoft Excel application is very helpful for employees to complete their work with better effectiveness and efficiency. However, there are still difficulties and mistakes in using formulas and functions, especially for those who are less familiar with Excel. Some employees still need further information on how to use this application. Therefore, training or further introduction to the Microsoft Excel application is needed to improve the skills and administrative performance of employees in the Ministry of Religion affairs in Gowa. It is suggested that the Ministry of Religion affairs in Gowa provide facilities to improve computerization, especially in the use of Microsoft Excel, and hold training programs to help employees improve their skills in using the software.Keywords— Microsoft Excel, Administration, Data Processing, Perception
An Analysis of Teachers’ Questioning Strategies During the Classroom Interaction at SMAN 4 Takalar
Authors: Wandasari Nurhidayana , Munir Munir , Sakkir Geminastiti
Published: September 2024

This study aimed to find out the teachers’ questioning strategies during the classroom Interaction and the reason why the English teacher used their questioning strategies. The English teachers at SMAN 4 Takalar were the subjects of this study. In this study, the method conducted descriptive-qualitative. The instrument of this study was used observation checklist and interview protocol. Observation and interviews were used to collect data on all activities in the classroom. The results of the study indicate that teachers employed several questioning strategies in the classroom, including rephrasing, simplification, repetition, decomposition, and probing. These strategies were used for various purposes based on the functions associated with each strategy. The reason why teachers used these specific questioning strategies is likely due to the functions associated with each strategy. Teachers may have used rephrasing, simplification, repetition, decomposition, and probing to assess students' comprehension, draw their attention, support their contributions in class, and seek clarification or confirmation. These strategies help teachers gauge student understanding, encourage active participation, and create an inclusive and engaging learning environment.Keywords— Teachers’ questions, questioning strategies, classroom interaction
The Impact of Podcasts on EFL Students’ Listening Comprehension
Authors: Sulistina Sulistina , Atmowardoyo Haryanto , Aeni Nur
Published: September 2024

This study aimed to determine the impact of podcasts on students’ English listening comprehension. Quantitative methods were utilized with a one-group pre-test-post-test pre-experimental design involving 20 seventh-grade students from MTsS DDI Seppange during the academic year 2023/2024. Quantitative methods were utilized with a one-group pre-test-post-test pre-experimental design involving 20 seventh-grade students from MTsS DDI Seppange during the academic year 2023/2024. Technical term abbreviations were explained upon first use. The research instrument consisted of questions assessing students’ spoken English comprehension ability. Data processing for this study indicated that the pre-test average score was 29.00, categorized as “poor,” while the post-test average score was rated as “poor” but at 73.35 points. The obtained p-value of .000 was smaller than α (0.05), and the t value (10.138) exceeded the t table (2.101), indicating statistical significance. This study’s findings reveal that seventh-grade students at MTsS DDI Seppange demonstrated an improvement in listening comprehension following several treatments. The increase was only slightly significant since the average scores of the initial and final exams remained in the “poor” range, despite a gain of 47.35 units. Upon experiencing a listening focused instruction for the first time, the school’s implementation of podcasts enhanced students’ comprehension. Furthermore, pupils exhibited eagerness and participation in class by communicating with both their peers and the instructor. Even so, the research has certain limitations, such as the lack of necessary facilities, which makes the utilization of video podcasts less than optimal.Key words-- podcast, listening comprehension
The Implementation of English Online Learning Strategy at Junior High School in Rural Area Post Covid-19 Pandemic
Authors: Asmi Asmi , Munir Munir , Farahdiba Syarifah
Published: September 2024

This study aims to (1) find out what strategy did teachers in rural area implement in their online learning post covid-19 pandemic (2) find out challenges that they faced post covid-19 pandemic and how they overcome these challenges. This study applies the qualitative method to achieve the research objectives. The subject of this study were six English teachers from junior high school that teach in rural area post covid-19 pandemic. The subjects were chosen by using purposive sampling and do not have to be large in number just following the necessity of the research. The instrument of this study is in-dept interview. The result of this study revealed that teachers in rural area applied two strategies in their online learning during the pandemic, they are online chat only and combining video conference with online chat. In addition, teachers in rural area face several challenges when implementing the online learning strategy, including poor internet connection, lack of devices (Handphone) and internet data, and lack of students’ motivation. However, teachers are able to find ways to overcome these obstacles, there are four ways, they are: limited face-to-face meeting, visiting the students, extend the submission time, and using one phone for two or several students.Keywords- online learning strategy, implementation, challenges, rural area
Students’ Motivation In English Learning During the Pandemic: A Study of Year Eight Students at SMP Negeri 27 Makassar
Authors: Syam Adhe Ramdhany , Korompot Chairil Anwar , Muhayyang Maemuna
Published: September 2024

This study aims to determine the motivation of students in learning English during the Covid-19 pandemic, with a specific focus on eighth-grade students at SMP Negeri 27 Makassar. And to explores the intrinsic and extrinsic factors that drive students’ motivation in English learning. The study utilized questionnaires and interviews as research instruments to collect data on student motivation levels. Data analysis was conducted using a 4-point Likert scale to determine the levels of intrinsic and extrinsic motivation. The findings of the study indicate that students at SMP Negeri 27 Makassar exhibited a remarkably high level of intrinsic motivation, driven by students' aspirations to enhance their understanding and proficiency in the English language. Additionally, the influence of extrinsic motivation factors showed a high level, attributed to the presence of a conducive learning environment and engaging teaching materials, which significantly contributed to student motivation. Overall, the level of student motivation in learning English during the Covid-19 pandemic at SMPN 27 Makassar, reaching  72.23,  falls  within  the  category  of  very  high  motivation.  The  Intrinsic factors instance perseverance in following English learning, feeling of necessity in English language learning, and the expectations and aspirations associated with English language learning play a crucial role in student intrinsic motivation. Additionally, the extrinsic factors instance a supportive learning environment, engaging teaching methods, and the availability of adequate learning facilities, significantly contribute to students' motivation.Keywords: Motivation, Motivational Factor, English Learning
The Use of Role Play to Increase Student’s Self-Confidence in Speaking Class at SMKN 2 Selayar
Authors: Putra Aldhy Alamsyah , Muhayyang Maemuna , Sakkir Geminastiti
Published: September 2024

This research aims to investigate the benefits and challenges of using video as a teaching medium: teachers’ perception. Besides, this research also attempts to identify the benefits and challenges of using video as a teaching medium. Learning media is currently needed by teachers to support the teaching and learning system in the classroom. One of the media applied is video. This study aims to determine the benefits and challenges of using videos in the teaching and learning process based on teacher perceptions. In conducting this research, researchers used qualitative methods to find out and explore more detailed information. The qualitative approach method used by the researcher was descriptive qualitative. Two English teachers were selected as participants in this study. All participants were English teachers in one of the high schools in MTs Al-Hidayah consisting of two female teachers. The researcher used interviews as the data collection instrument. There were eight findings, four advantages, and four challenges. Based on the results of the study, it can be concluded that teachers' perceptions of the use of video-based learning media are very positive. Thus, it can be concluded that the use of video-based learning media can increase teacher creativity, increase student attention, increase student motivation, and Increase learning effectiveness.Keywords—Teaching video, benefits, and challenges
Psychological Barriers of Students in Listening to English Lessons in Online Learning Process
Authors: Rahmat Nur Ainun , Muliati Andi , Aeni Nur
Published: September 2024

The aim of this study is to find out what are the psychological barriers faced by students of SMP Negeri 8 Palopo when listening to English lessons in the online learning process. Qualitative design with analytical description was the method used by the researcher. The population was the third-grade students at SMP Negeri 8 Palopo in academic year 2022/2023. This research used simple random sampling technique. In this case, the researcher chose two classes to distribute the questionnaire and eight people were selected from the questionnaire results to be interviewed. Instrument of this research were a questionnaire and an interview. The results of data analysis shows that students' psychological barriers when listening to English lessons in the online learning process are; students' perspective on English lessons, students feel anxious, less-interest in English, lack of concentration and lack of vocabulary and conversation skills. The research results that trigger the presence of psychological barriers to learning are learning methods and local support.Keywords— Psychological Barriers, Students, Listening to English Lessons
Rölanti koşullarında çalışan benzinli bir motorun performans ve emisyonlarına asetilenin etkisi
Authors: İlhak Mehmet İlhan
Published: September 2024

Taşıt trafiğinin yoğun olduğu saatlerde yapılan şehir içi yol testlerine göre, taşıtların bekleme süreleri toplam çalışma zamanının yaklaşık %30-38’ ini oluşturmaktadır. Bu nedenle şehir içi ulaşım söz konusu olduğunda, içten yanmalı motorlar ile tahrik edilen ve taşıt sayısının büyük bir kısmını oluşturan binek otomobillerin boşta çalışırken tükettikleri yakıt miktarı ve buna bağlı olarak ortaya çıkan egzoz emisyonları önemli hale gelmektedir. Bu çalışma, yakıt olarak asetilen kullanımının benzinli bir motorun rölanti performansı üzerindeki etkilerini araştırmaktadır. Dört zamanlı, dört silindirli, su soğutmalı, buji ateşlemeli bir otomobil motoru üzerinde yapılan deneyler, tek başına benzin yerine benzin-asetilen karışımlarının kullanılmasının, karbon monoksit ve hidrokarbon emisyonlarında azalmaya, nitrojen oksit emisyonunda ise artışa neden olduğunu gösterdi. Test motorunda %100 asetilen kullanılarak yapılan deneylerde, benzinle çalışmaya kıyasla karbon monoksit ve hidrokarbon emisyonlarında %96 azalma, nitrojen oksit emisyonlarında ise %650 artış olduğu gözlendi. Motora olan enerji akışında ise %20.5 azalma olduğu tespit edildi.
Implementasi Fuzzy Logic Controller untuk Kendali Robot Line Follower berbasis Computer Vision
Authors: Huda Fahril Maula Tanzil , Rahmat Fajri Saputra , Nugroho Damianus Cahyo Widi , Nurlita Merllya Penta , Nugraha Zaki , Priambodo Ardy Seto
Published: September 2024

Robotika telah menjadi kebutuhan primer di bidang industri. Perkembangannya sangat cepat, bahkan saat ini fokus utama di bidang teknologi merupakan bidang robotika. Dalam pengembangannya, robot membutuhkan sebuah kontrol agar mampu dimanfaatkan dengan baik yang disebut sebagai sistem kendali. Penelitian ini bertujuan untuk membuktikan implementasi sistem kendali fuzzy dengan metode citra digital. Aplikasi yang dimanfaatkan pada penelitian ini adalah software Webots dengan robot e-puck, sehingga penelitian ini berfokus dengan simulasi. Sistem kendali fuzzy dengan metode citra digital terbukti mampu digunakan sebagai kontrol robot secara efisien pada dua skema jalur, A dan B. Hasil penelitian menunjukkan robot berhasil melewati kedua jalur dengan modus error 0. Selain itu, robot menghasilkan rata-rata nilai error sebesar -11,54 piksel dan -3,11 piksel pada masing-masing jalur. Hal ini menunjukkan error yang relatif kecil dan performa robot sangat baik.
Rancang Bangun Alat Pengendali Air Conditioner secara Otomatis dengan Sensor Inframerah Berbasis ESP32 di UPT BLK Kulon Progo
Authors: Taufik Tito Tiyastono , Prasojo Joko , Yuliani Oni , Pratama Bagus Gilang
Published: September 2024

AC merupakan alat yang relatif boros energi listrik. Pemborosan penggunaan daya listrik karena penggunaan AC salah satunya terjadi di ruang Tata Usaha UPT BLK Kulon Progo. Sering kali ditemui AC menyala saat kondisi ruangan tidak ada orang. Berdasarkan masalah tersebut perlu dibuat alat yang dapat mendeteksi ada atau tidak orang di dalam ruangan kemudian menyalakan dan mematikan AC secara otomatis. Alat juga dibuat dapat menyalakan atau mematikan AC dari jarak jauh menggunakan teknologi berbasis IoT. Metode yang digunakan pada penelitian ini adalah analisis kebutuhan bahan, perancangan hardware dan software, dan tahap pengujian alat. Rancang bangun hardware menggunakan ESP32, Sensor PIR, Sensor DHT11, IR transmitter dan software menggunakan Arduino IDE dan aplikasi Blynk IoT. Hasil rancang bangun alat yang dibuat dapat berfungsi dengan baik untuk menyalakan dan mematikan AC di ruang Tata Usaha UPT BLK. Penghematan penggunaan energi listrik yang diperoleh adalah 18,75% dan penurunan durasi nyala AC adalah 19,42% dibandingkan dengan sebelum penambahan alat.