bluuebunny/crossref_metadata_2025 huggingface dataset:
Inhibition Effect of N-Hexane Extract of Cherry Mistletoe Leaves (Dendropthtoe pentandra (L) Miq.) on Xanthine Oxidase
Authors: Saputra Mario , Sinulingga Sadakata , Subandrate Subandrate
Published: March 2024

Introduction. Cherry leaf extract has been found to have the potentiality to impede the xanthine oxidase enzyme. It is believed that cherry mistletoe leaves also possess similar properties as they are hemiparasites of their host. This study aims to determine the inhibition effect of N-Hexane extract of mistletoe cherry leaves on the xanthine oxidase. Methods. This research was conducted as an experimental in-vitro study. Cherry mistletoe leaves were extracted by N-Hexane solvent. The extract was divided into five doses, i.e. 40 mg/L, 20 mg/L, 10 mg/L, 5 mg/L, and 2.5 mg/L. Phytochemical screening was conducted to identify secondary metabolites. The impact of xanthine oxidase inhibition was quantified using a UV-vis spectrophotometer at wavelength of 400 nm. Results. N-Hexane extract of cherry mistletoe leaves contains alkaloids and triterpenoids. N-Hexane extract of mistletoe cherry leaves at a dose of 40 mg/L, 20 mg/L, 10 mg/L, 5 mg/L, and 2.5 mg/L was able to inhibit the xanthine oxidase enzyme with the line equation y = -0.2543x+ 91.305. The IC50 value for the N-Hexane extract of cherry mistletoe leaves is 162 mg/L Conclusion. N-Hexane extract of cherry mistletoe leaves has the potency to inhibit the xanthine oxidase enzyme in the medium category.
Comparison of Oxygen Saturation Dynamics Between Types of Acute Stroke in Early Hospitalization Period
Authors: Maharani Naura Waliya , Sari Ita Muharram , Amani Patwa
Published: March 2024

Introduction. Stroke is the number one cause of death and disability in Indonesia. It was found that the incidents of stroke were higher at ages over 45 years. The use of pulse oximeter is an efficient step in monitoring oxygenation in stroke patients. Decreased oxygen levels can cause neurological deficits such as cognitive impairment, causing patients to have problems in attention and executive functions. This study aims to determine the relationship between the type of acute stroke and oxygen saturation in early hospitalization period. Methods. This research was carried out from November to December 2023 at the National Brain Center Hospital, Jakarta, using a cross sectional approach. Information on diagnosis and oxygen saturation values were obtained through medical records, with a total of 70 patients as subjects. Subjects selected through simple random sampling with patients age over 45 years. Statistical analysis used the Mann Whitney test with a significantly different p value <0.05. Results. A total of 68.6% of the subjects were male with ages of 45-59 dominated the subjects at 51.4%. Statistical tests on the type of acute stroke with oxygen saturation values produced a value of p = 0.044 (p < 0.05) on the 3rd day of hospitalization. These results indicate a significant relationship between the type of acute stroke and the oxygen saturation value on the 3rd day of hospitalization. Conclusion. There is a significant correlation between the type of acute stroke and oxygen saturation in the 3rd day of hospitalization.
Investigation and the development of learning analytics dashboard in open and distance learning using big data mining
Authors: Yang Yuhua , Hussin Norriza Binti , Zheng Maoxing , Wang Dan
Published: March 2024

The main aim of this study is to provide universities with a way of examining and predicting student performance. The fundamental aim and purpose of this study is to help academic institutions to analyse and predict student performance. The credibility and accuracy of the model was examined by comparing the predicted results of the model with the observed values. And educational data mining techniques were used to create student profiles. Weighted gain, classification analysis, decision tree and rule induction were used in this study. The results of the study showed that the level of students' academic performance varied according to criteria such as academic structure, faculty, mode of enrolment and gender. In order to determine the relative importance of variables, the information weight gain technique was used after generating rule induction parameters and hidden rules between data. Using data mining techniques, we can obtain both guidelines to instruct students and information to help us identify them.
Calculation of Intracranial Volume in Van Cats by Stereological Method
Authors: Koçyiğit Ali , Demircioğlu İsmail , Yılmaz Osman
Published: March 2024

Stereology is a powerful scientific method for estimating the real attributes of three-dimensional structures using calculations on two-dimensional photographs. The goal of this study was to determine the cerebral volume of cats using stereological cranial computed tomography (CT) and to uncover dimorphic differences. The study employed 16 adult Van cats (8 females and 8 males). A multislice CT equipment was utilized to scan the craniums of the cats involved in the study. Stereological computations were performed using 12 section images from cranial CT sections with intracranial borders calculated using a systematic random sampling procedure. Linear measurements of the intra-cranial region were also taken. When the findings were analysed, it was discovered that intracranial volume values differed across sexes (P<0.05). It was determined that the measured linear parameters and calculated index values did not show dimorphism between the sexes (P>0.05). As a result, it is thought that the determination of the intracranial volumes of Van cats using stereology method will contribute to clinical sciences in terms of diagnosis, detection and treatment of diseases and will allow the comparison of volume values calculated with different methods.
A Study of Organizational Silence from the Viewpoint of Female Students in Male-Dominated Classrooms
Authors: Özdemir Pınar
Published: March 2024

Organizational silence behavior is one of the problems frequently experienced by women working in male-dominated workplaces. Women working in such workplaces prefer to remain silent about the problems that they face or the issues that concern the organization in general for various reasons. The aim of this study is to determine whether the same behavior is experienced by female students in male-dominated classrooms. The study was conducted with 102 students in a male-dominated university. On the evaluation of the survey, it is seen that female students showed behaviors similar to those of male students in all three sub-dimensions of organizational silence, and they were able to express the problems they experienced or observed without worrying about damaging the image of the class, being labeled as troublemakers, or being excluded from the class. It is thought that this study will have a positive contribution to the literature researching not only the relations between female and male students in the classroom but also different aspects of organizational silence. Future research may focus on investigating whether the differences in the behaviors of male and female employees in workplace or their reactions to events are also experienced by male and female students in the educational environment, comparing the behaviors of male and female students in male-dominated classrooms, and identifying differences between generations in this regard.
Kamu Yönetimi Paradigmaları Çerçevesinde Kamu Hizmeti Sunum Yöntemlerinin İncelenmesi
Authors: Küçük Ünal
Published: March 2024

Kamu hizmeti sunum yöntemlerinin şekillenmesinde ve tercihinde küresel gelişmelerle birlikte ülkelerin içerisinde bulundukları siyasi, ekonomik, yönetsel şartlar belirleyici olmaktadır. Ancak çalışmada, diğer faktörler gözardı edilerek kamu yönetimi anlayışında meydana gelen değişim ile kamu hizmetlerinin sunum yöntem ve tekniklerinde meydana gelen dönüşüm arasındaki ilişki ele alınmıştır. Bu doğrultuda çalışmanın konusu, ‘kamu hizmeti sunum modelleri ve kamu yönetimine hâkim paradigma arasındaki ilişki’ olarak belirlenmiştir. Çalışmanın amacı, kamu yönetimi alanında meydana gelen düşünce değişimi ile kamu hizmeti anlayışında yaşanan değişiklikler arasındaki etkileşimi ortaya koymak ve bu etkileşimin niteliğini saptamaktır. Çalışmanın sınırlılıkları mekânsal açıdan Türkiye, zamansal açıdan geleneksel kamu yönetimi ve öncesi ile yeni kamu yönetimine (post-YKY’ye) kadar süregelen dönem olarak belirlenmiştir. Nitel araştırma yaklaşımı çerçevesinde hazırlanan çalışmada, bilgi toplama aracı olarak ikincil veri kaynaklarından faydalanılmıştır. Kamu yönetimi paradigmasında meydana gelen değişim ile kamu hizmeti alanında yaşanan değişimler arasında illiyet bağı olduğu anlaşılmış ancak bu konuda genelgeçer bir tanımlama yapmanın pek mümkün olmadığı gözlemlenmiştir. Ayrıca post yeni kamu yönetimi başlığı altında ifade edilen düşüncelerin kamu hizmeti alanında meydana getirebileceği yeniliklere yer verilmiştir.
Türkiye’de Okul Yöneticileri Konusunda Yazılan Lisansüstü Tezlerdeki Eğilimler (2015-2020)
Authors: Baykan Sena Yağmur , Nuhoğlu Hasret
Published: March 2024

Bu araştırmada okul yöneticileri konulu lisansüstü tezlerin çeşitli kategoriler açısından incelenmesi amaçlanmıştır. Çalışmada tarama modeli kullanılmıştır. Araştırmanın veri kaynağı Yüksek Öğretim Kurulunun tez arşivinden alınmış ve belgesel tarama yöntemi ile veri toplanmıştır. Lisansüstü tezler, Akademik Yayın Değerlendirme Formu ölçütleri doğrultusunda incelenmiştir. Tezler yıl, tema, araştırma modeli, veri toplama araçları, örneklem türü, tez türü, araştırma yöntemi, veri analiz teknikleri ve örneklem büyüklüğü kategorileri açısından betimsel analiz yöntemi kullanılarak çözümlenmiştir. Araştırmanın sonuçlarına göre okul yöneticileri konulu tezlere tema açısından bakıldığında yönetici özellikleri ve eğitimde liderlik temaları ön plandadır. Lisansüstü tezlerin çoğu yüksek lisans düzeyindedir. 2019 yılı, konu ile ilgili araştırmaların en yoğun yapıldığı yıl olmuştur. Tezlerde nicel yöntem ve tarama modeli daha fazla kullanılmıştır. Örneklem büyüklüğü olarak 0-50 kişi, örneklem türü olarak yönetici ve öğretmenlerin daha çok tercih edildiği görülmüştür. Anket, ölçek ve görüşme formunun en sık kullanılan veri toplama aracı olduğu tespit edilmiştir. Veri analiz tekniklerinden en çok tercih edilenin parametrik test teknikleri olduğu saptanmıştır. Araştırmanın sonuçlarına dayalı olarak eğitimde teftiş ve denetim, okula toplumsal katılım ve okullarda işletme gibi nadiren çalışılan konulara ağırlık verilmesi, veri toplama araçları, araştırma yöntemi ve araştırma modeli seçiminin farklılaştırılması gibi önerilerde bulunulmuştur.
The Effect of Application Compost and Biochar from Salak Leaf Sheaths on Carbon Status and Growth of Corn Plants (Zea mays L.) in Ultisol Soil
Authors: Distya Winnie , Hidayat Benny
Published: March 2024

. Penelitian ini bertujuan untuk mengetahui perbedaan dan dosis terbaik aplikasi pelepah daun salak dalam bentuk kompos maupun biochar pada status karbon serta pertumbuhan tanaman jagung (Zea mays L.) di tanah Ultisol. Penelitian ini dilaksanakan di Rumah Kaca Fakultas Pertanian Universitas Sumatera Utara, dimulai pada bulan Juni 2022 sampai Januari 2023. Rancangan yang digunakan pada penelitian ini adalah Rancangan Acak Kelompok Non Faktorial yang terdiri dari 4 ulangan dengan tingkat dosis bahan kompos pelepah daun salak dan biochar pelepah daun salak (20, 40 dan 60 ton/ha). Hasil penelitian menunjukkan bahwa aplikasi kompos dan biochar pelepah daun salak nyata meningkatkan status karbon pada masa inkubasi 20 hari serta pertumbuhan tanaman jagung di tanah Ultisol. Pelepah daun salak dalam bentuk kompos lebih baik dalam meningkatkan bahan organik dan pertumbuhan tanaman jagung, sedangkan pH H2O lebih baik pada pengaplikasian pelepah daun salak dalam bentuk biochar. Aplikasi pelepah daun salak dalam bentuk kompos dan biochar terbaik dalam meningkatkan status karbon serta pertumbuhan tanaman jagung terdapat pada dosis 60 ton/ha.
Entrevista a Göran Therborn
Authors:   Universidad de Guadalajara, Hernández Vargas Carlos Rafael
Published: March 2024

La presente entrevista se dio en el marco de su intervención en la Feria Internacional del Libro de Guadalajara (2023), en donde participó en la mesa A 100 años de la Escuela de Fráncfort.
The Meaning of â€˜Meatâ€™: Boundary Objects in the Promotional Cultures of Plant-Based Meat
Authors: Phillips Ryan J.
Published: March 2024

This dissertation interrogates the use of boundary objects in the rhetorical framing strategies of plant-based meat companies. I address the framing, categorization, and boundary work of foods such as â€˜veganâ€™, â€™meatâ€™, and â€˜burgerâ€™ from a Bourdieuian, class-focused perspective. I use rhetorical framing analysis to critically engage with the Beyond Meat and Impossible Foods burger campaignsâ€”including CEO interviews (with Patrick Brown and Ethan Brown), trade journal articles (Fortune and Business Insider), company websites (Beyond Meat, Impossible Foods, A&W, and Burger King), Twitter posts (@AWCanada and @BurgerKing), and consumer engagements on Twitterâ€”between 2014-2018. This project contributes to the theoretical refinement of boundary objects by demonstrating how they can be used to rhetorically situate non-dominant social actors within the categorical boundaries of dominant groups. In this case, plant-based meat companies redefine â€˜meatâ€™ along chemical and nutritional lines in order to situate themselves and their products within the privileged socio-cultural category of meat. I also enhance the usefulness of rhetorical framing analysis as a method of studying communication by adding agenda-dismissal to the methodological repertoire of agenda-setting theory. I find that, while vegetarianism and veganism have historically constituted anti-consumerist subjectivities, Beyond Meat, Impossible Foods, and the rhetoric of plant-based meat serve to reinforce a dominant ideological frame of individuals-as-consumers by encouraging people to consume more â€˜goodâ€™ food. From a class-based perspective, this rhetorical strategy places the consumerist logic of plant-based meats at odds with the conspicuous and distinguished consumption ideals of bourgeois veganism. Beyond Meat, Impossible Foods, and plant-based meat rhetorics thus perpetuate neoliberal hegemony by emphasizing a nutricentric framing of food products, which dismisses other relevant social, cultural, and economic elements of food. Finally, I use this project as an interjection into the larger field of cultural studies in order to identify and name an emerging sub-discipline of critical analysis: â€˜meat studiesâ€™. Ultimately, I argue that the rhetoric of plant-based meat companies reinforce rather than challenge both meatâ€™s privileged cultural status and the foundations upon which consumer capitalism exists.
Optimization of Winery Wastewater Co-treatment at Municipal Wastewater Treatment Plants
Authors: Johnson Melody
Published: March 2024

This work presents a comprehensive assessment of the environmental impact of winery wastewater (WWW) and methods to optimize its co-treatment at municipal wastewater treatment plants (WWTPs). A comprehensive review of full-scale treatment at 53 wineries in Niagara Region, Canada finds constructed wetlands are the most common type of on-site treatment. On-site systems do not address all treatment needs, requiring a portion of the WWW to be co-treated at WWTPs.
From freshwater resource impact perspective, the grey water footprint (WF) associated with treated WWW effluents is often neglected from wine-making WF assessments. However, co-treated WWW effluents from WWTPs in Niagara Region are found to exert a substantial grey WF equivalent to over 960 times their volume. While full-scale operating data indicate that anaerobic co-digestion with municipal sludges is effective (89% chemical oxygen demand (COD) removal), co-digestion capacity is limited. Bench-scale co-treatment trials confirm that WWTPs’ aerobic activated sludge systems can effectively co-treat WWW provided organic loading rates are limited.
A combined Michaelis-Menten-University of Cape Town kinetic model is found to best describe the pH-inhibited oxidation by heterotrophs, and the associated specific rate of substrate consumption is highest in biomass that had been exposed to WWW (57.3 mg COD/g MLVSS·h) compared to biomass that had not (20.7 mg COD/g MLVSS·h). The feasibility of using the Fenton-like process to pre-treat WWW to enhance co-treatment is assessed. Solubilization of particulate COD and total organic carbon (TOC), and sample handling requirements prior to analysis, are identified as factors affecting their apparent removal rates. Inert suspended solids generated during sample handling is found to be the variable best suited to quantifying the extent of reaction.
However, the Fenton-like process provides limited opportunity to optimize co-treatment at WWTPs. A novel pre-treatment method, the Waste Activated Sludge-High Rate (WASHR) process, is proposed to optimize the co-treatment. The WASHR process combines the contact stabilization and sequencing batch reactor processes. It utilizes waste activated sludge from the WWTP as its biomass source, allowing rapid start-up. Bench-scale trials confirm that the WASHR process, vs. direct co-treatment, can reduce COD and total suspended solids loadings to the WWTP’s liquid treatment train by more than 81% and 92%, respectively, and to the solids treatment train by more than 59% and 30%, respectively. A case study is used to confirm the economic viability and environmental sustainability of the WASHR process compared with direct co-treatment. Finally, robust correlations between easily measured parameters and key organic and nutrient parameters are developed. The correlations provide a promising, rapid and cost-effective means of characterising WWW to allow improved process control.
Self-identified Women's Gendered Mobility Experiences and Cycling Frequency, and the Modifying Role of Newly Introduced Cycling Facilities
Authors: Giacomantonio Sarah
Published: March 2024

Cycling facilities are a widely used, sustainable transportation policy tool, but their impacts on mitigating gendered barriers to cycling is less studied. This paper presents the findings from an online household survey conducted in the Greater Toronto Area (GTA), Canada, specifically focusing on 10 neighbourhoods- five with a newly constructed cycling facility and five without. Results from ordinal logistic regression models indicated a higher likelihood of commute-related cycling among women who are between the ages 30-44 years, who work part-time, and who have children, on streets with a new cycling facility. Using a feminist geography lens, I argue that the presence of cycling facilities potentially allowed some women to minimize the patriarchal barriers they experience when cycling, including psychological and social expectations around feminine performance, embodiment and material understanding of their “cycling body”. This work calls for future gendered mobility work to further explore the contextual consideration of women’s and gender fluid individuals’ intersectional experiences influencing their cycling frequency, as dictated by their societally influenced gendered mobility experiences and socio-demographic factors.
Geographic Object-based Image Analysis Change Detection in a Shrinking City: Detroit, Michigan, 2014-2018
Authors: Wit Vera De
Published: March 2024

Over the last several decades, cities in America’s Rust Belt region have experienced population and economic declines – most notably, the City of Detroit. With increased property vacancies, many residential structures are abandoned and left vulnerable to degradation. In many cases, one of the answers is to demolish the structure, leaving a physical, permanent change to the urban fabric. The following study uses freely available very high-resolution (VHR) aerial ortho photographs to perform a remote sensing analysis through the application of Geographic Object Based Image Analysis (GEOBIA) methods. The research successfully generates the distinction between pervious and impervious land cover, and links those to parcel lot administrative boundaries within the City of Detroit. Additionally, it explores potential challenges and solutions for batch classification when performing change detection analysis using different sensors at varying spatial resolutions in diverse areas within the city.
Potter Cove’s Heavyweights: Estimation of species’ interaction strength of an Antarctic food web
Authors: Rodriguez Iara , Saravia Leonardo
Published: March 2024

Understanding the complex interplay between structure and stability of marine food webs is crucial for assessing ecosystem resilience, particularly in the context of ongoing environmental changes. In the West Antarctic Peninsula, global warming has led to severe alterations in community composition, species distribution, and abundance over the last decades. In this study, we estimate the interaction strength within the Potter Cove (South Shetland Islands, Antarctica) food web to elucidate the roles of species in its structure and functioning. We use these estimates to calculate food web stability in response to perturbations, conducting sequential extinctions to quantify the importance of individual species based on changes in stability and food web fragmentation. We explore connections between interaction strength and key topological properties of the food web. Our findings reveal an asymmetric distribution of interaction strengths, with a prevalence of weak interactions and a few strong ones. Species exerting greater influence within the food web displayed higher degree and trophic similarity but occupied lower trophic levels and displayed lower omnivory levels (e.g., macroalgae and detritus). Extinction simulations revealed the key role of certain species, particularly amphipods and the black rockcod Notothenia coriiceps, as their removal led to significant changes in food web stability and network fragmentation. This study highlights the importance of considering species interaction strengths in assessing the stability of polar marine ecosystems. These insights have crucial implications for guiding monitoring and conservation strategies aimed at preserving the integrity of Antarctic marine ecosystems.
Lianas, to cut or not to cut to conserve forest biodiversity?
Authors: Moreno Ricardo , Ortega-Solis Gabriel , Godoy Javier , Gonzalez Felipe , Díaz Iván
Published: March 2024

Although lianas play an important role in forest composition, structure, and functions, they are considered as structural parasites of the tree-host. Both contrasting ideas on the role of lianas in forest ecosystems challenge the practitioners and decision might be taken without specific information. Here we present a preliminary result, applied in a unique, small, old-growth forest in the Chilean Mediterranean Forest, to assess the interference degree that lianas might cause to the trunk or to the crown of the host-tree. Results showed that almost half of the trees were colonized by lianas between 1-6 cm DBH, with a continuous regeneration. Also, most lianas were hanging from lower branches but not tangling the main trunk, while most of them did not reach the topmost section of the crown, likely not competing for light resources with the tree-host. Although we did not assess the host responses, we found no strong evidence indicative of a structural parasitism; therefore, no control or eradication of lianas can be recommended in this particular case. Moreover, it seems the species might be an important component of the old-growth Mediterranean Forest, and could be include the lianas into the planning to increase biodiversity and other ecological functions. A rapid assessment could facilitate the decisions in other forest ecosystems, while gaining more information on the ecological function and processes that utterly would help enhancing conservation and restoration outcomes.
THE EVALUATION STRATEGIES OF INTEGRATED SCIENCE TEACHING AND LEARNING
Authors: Lamanauskas Vincentas
Published: March 2024

For an evaluation of process of science teaching and learning there are different strategy and ways. The main questions are: what is to be evaluated? when and why evaluate? how to evaluate? It is clear that for science teaching success one of the most important resources is feedback from students (Lamanauskas, Vilkonienė, 2008). Teachers can evaluate a whole science course, analyse students’ learning needs, and investigate students’ experiences of teaching. Evaluation should be correlated both with the purposes and to specific educational situations. Also it is very important to strengthen teachers` and students` motivation when evaluating. There are multiple methods for collecting data on science teaching effectiveness. Also it is clear that a key to effective teaching evaluation is to collect data from multiple sources (triangulation).
TECHNICAL TEACHERS’ FACTORS THAT INFLUENCE STUDENTS’ ACADEMIC PERFORMANCE IN INDUSTRIAL EDUCATION
Authors: Puyate Suobere T. , Okwakpam Iheanyi Nwokanma
Published: March 2024

The study on technical teachers’ factors that influence student’s academic performance in industrial education programme in Rivers State, Nigeria was carried out in Rivers State University of Science and Technology, Port Harcourt, Rivers State, Nigeria and Rivers State University of Education, Port Harcourt, Rivers State, Nigeria. The population for the study comprised all students undergoing industrial programme while sample size used for study was 206 students, which comprises 96 students for Rivers State University of Science and Technology and 110 students for University of Education. The only instrument used for the study was the questionnaire. Two research questions and one null hypothesis where posed and tested for the study. The Findings of the study imply that, workshop spaces are inadequate, teacher in both institutions do not use instructional materials always, teachers do not select and use the most appropriate techniques in lesson delivery. Based on the findings, some recommendations were made.
Key words: academic performance, industrial education, technical education, technical teachers.
MODERN TOOLS FOR POPULARIZATION AND MOTIVATION STUDENTS IN PHYSICS TEACHING
Authors: Volná Marie , Látal František , Kainzová Veronika , Říha Jan
Published: March 2024

The project “Modern ICT tools in science and economic disciplines and their presentation” (ICTEDUCA) takes place in the period between June 2009 and June 2012. The project was aimed at improving the quality of the study programmes of the physics teacher training by means of using information and communication technologies (ICT) in physics teaching and show relations between subjects. Some surveys in the Czech Republic show that physics is negatively evaluated by students in primary and secondary schools. In this article it is described some possibilities how to popularize in physics and science education using modern tools. The first part this article describes a searching interdisciplinary relation, which has an assignment to show connections between physics phenomena and human body. In the second part is introduced a voting system, through the teachers improve students in their lessons. The last part of the article attend to remote control experiments, which students, experimenters, teachers or any users can control all our experiments from its personal computer through the Internet from the website http://www.ictphysics.upol.cz/remotelab/.
Key words: biology teaching, ICT, interdisciplinary relations, physics teaching, remote experiment, voting system.
THE POPULARITY OF GEOGRAPHY IN POLAND AS A SCIENTIFIC DISCIPLINE TO STUDY INTRODUCTORY REPORT OF THE RESEARCH
Authors: Wójtowicz Bożena
Published: March 2024

The number of secondary school graduates choosing a particular discipline to study is, to some extent, the reflection of the position of this scientific discipline and the improvement of its research achievements as well as the economical needs for such university graduates. The popularity of a particular scientific discipline is revealed in the number of applicants wanting to study the selected discipline along with the number of students. It depends on many factors, such as: changing demographic processes, social changes, the demand for specialists in the sphere of the economy, the status and the position of a particular scientific discipline, the personal interest of the individual as well as the formal conditions (e.g. limits of the accepted students, legal restrictions, demanded disciplines, etc.). In order to answer the question how popular the Geographical studies are in Poland, the statistic data of the Ministry of Science and Higher Education was analyzed. Furthermore, the questionnaires among the students of Geography in eight academic centers in Poland were conducted. The research allowed to capture the important factors that had the great impact on the interest in the sphere of the geographical studies among young people. It should allow the universities dealing with geographical studies to develop the strategies of popularization of such studies. The psychological aspect of the made choice had the considerable impact on the popularity. The main factors, which were crucial as far as the selection of the studies at the university was concerned, appeared as follow: the close distance from the university, the possibility of selecting the preferred specialty, the prestige of the university in the rankings, the family traditions.
Key words: competences, entrepreneurship, reasons for the selection, the strategy of education.
DISPARITIES IN THE PHYSICS ACADEMIC ACHIEVEMENT AND ENROLMENT IN SECONDARY SCHOOLS IN WESTERN PROVINCE: IMPLICATIONS FOR STRATEGY RENEWAL
Authors: Amadalo Musasia Maurice , Musera Geofrey
Published: March 2024

The topic of unequal outcomes for men and women in math and science has been in the public domain for some time now. This study however had special interest in physics because it is an optional science subject in most schools and taken by those confident enough to take on a third science subject. It is a key science subject expected to drive Kenya’s vision 2030 initiative which aims at making the country a newly industrializing middle income country providing high quality life for all its citizens. The realization of this vision calls for the harnessing of the science and technological ability of both men and women in the country; it is a collective responsibility of both genders. The study adopted a descriptive survey design. This paper presents the findings of the study on disparities in achievement and enrolment in physics in Kenya with a focus in Western Province. This study was conducted in 40 secondary schools in Western Province. Out of the selected 40 schools, responses were obtained from 32 schools giving a response rate of 80%. The data collection instrument was a questionnaire. Data on enrolment and performance on physics was obtained from the respective Heads of Departments. The study revealed that there are disparities in enrolment and achievement among the different school categories and gender disparities as well. Boys’ schools have had a steady lead in the enrolment and achievement on physics during the five years. The findings indicate that there is need to have a change in strategies in order to improve performance and enrolment in girls’ and co-education schools.
Key words: disparities, gender, harnessing, industrializing, technological and unequal outcomes.
Propuesta de modelo matemático para calcular el rendimiento de mando de obra en mampostería de bloque. Caso: ciudad de Cuenca, parroquia Cañaribamba
Authors: Coronel García Micaela Geovanna , Calle Castro Carlos Julio , Ávila Calle Marco
Published: March 2024

Introducción.  La colocación de la mampostería de bloque emerge como una fase crítica en el proceso constructivo, donde la eficiencia y precisión influyen directamente en la duración y calidad del proyecto. Esta actividad, aunque aparentemente simple, conlleva una complejidad inherente que a menudo resulta en retrasos significativos en la ejecución de la obra. La necesidad de comprender y abordar los factores que contribuyen a estos retrasos es evidente, ya que su impacto no solo se refleja en términos de cronograma y presupuesto, sino también en la satisfacción del cliente. Objetivo. Proponer un modelo matemático para calcular el rendimiento de la mano de obra en la colocación de mampostería con bloques en la Parroquia Cañaribamba, Cuenca, Ecuador. Metodología. El diseño metodológico adoptado sigue una orientación relacional y descriptiva, involucrando la recopilación de datos de nueve obras mediante una ficha de observación que abarca tanto factores externos como internos. Utilizando estos datos, se llevó a cabo un análisis de regresión lineal mediante un programa estadístico. Resultados. Los resultados destacan que, individualmente, ningún factor analizado influye significativamente en el rendimiento laboral; sin embargo, la combinación de estos factores permite prever el rendimiento con una precisión del 93.3%. Conclusión.  Se concluye que la regresión lineal emerge como una herramienta robusta para anticipar el rendimiento de cuadrillas de obreros en la Parroquia Cañaribamba, considerando la complejidad de factores tanto internos como externos en las obras. Área de estudio general: Ingeniería, Industria y Construcción Área de estudio específica: Administración de la Construcción
IMPLEMENTASI GREEN CHEMISTRY PADA PRAKTIKUM KIMIA DI SMAN 2 REJANG LEBONG
Authors: Sura Menda Ginting  , Wiwit  , Elvinawati  , Darwanto Wijaya  , Elisabet Vianey
Published: March 2024

Community service of Chemistry Education Study Program was conducted in SMAN (senior high school) 2 Rejang Lebong, Bengkulu. This activity aimed to introduce green chemistry-based practicum module in electronic form, with the topic of reaction rate factors and titration reaction using natural indicator. The activities were product introduction, demonstration of using the e-module, discussion, and evaluation toward students’ response of the e-module. The activity was attended by 20 students and three chemistry teachers from SMAN 2. This e-module encouraged schools to conduct chemistry practicum using surrounding ingredients based on green chemistry concept. Students’ response towards e-module showed good response proven by scores gained toward appearance, content, green chemistry aspects, and usability were 80,19%, 82,68%, 94,22%, and 86,63% respectively.

Keywords: green chemistry, practicum, community service
Pengkondisi Sinyal Parameter Sel Volta Untuk Data Logger MATLAB Berbasis Mikrokontroler Pada Lab Renewable Energy
Authors: Afaf Ariqoh , Setiawan Budhy , Kamajaya Leonardo
Published: March 2024

Penggunaan bahan bakar fosil cukup besar dengan meningkatnya kebutuhan, sehingga membuat cadangan energi fosil sangat menipis dan masyarakat semakin susah. Energi terbarukan metode sel volta yang memanfaatkan air garam sebagai elektrolit dapat digunakan sebagai salah satu energi alternatif yang perlu dikembangkan. Sel volta melalui mekanisme reaksi redoks yang berlangsung spontan dapat mengubah energi kimia menjadi energi listrik. Pada saat penelitian diperlukan monitoring pada sebuah alat penelitian energi terbarukan sel volta secara real time terhadap suhu, salinasi air garam, arus dan tegangan yang di hasilkan sel volta dan yang telah melalui regulator buck. Dari permasalahan diatas, perlu dilakukan sebuah pengkondisian sinyal sensor agar terbaca oleh mikrokontroler dan sistem monitoring dengan data logger yang dapat menampilkan data yang akurat. Mikrokontroler akan menerima dan mengolah data dari setiap sensor, kemudian data tersebut dikirim pada MATLAB dan ditampilkan dalam bentuk grafik. Pada penelitian ini sel volta dapat menghasilkan tegangan 12 hingga 16 Volt, dengan arus yang dihasilkan yaitu 0,005 A. Dalam merancang sensor tegangan, arus, salisanasi dan suhu, nilai rata-rata error yang didapatkan yaitu 2,56% , 5 %, 10,3% , dan 0,345%. Dalam data logger ini, pengambilan data setiap 1 detik dalam waktu 2 jam menghasilkan penyimpanan data sebessar 208953 bytes.
The Effect of STEM Integrated PBL Model to Practice Students' Scientific Communication Skills
Authors: Islamiyah Ayu , Wulandari Fitria Eka
Published: March 2024

This study aims to determine the effect of the STEM integrated PBL model to practice students' scientific communication skills. The population of this study were students from the eighth grade of Junior High School of 1 Candi. The sample used is 30 students selected from the population using simple random sampling technique. This research method is Pre-Experimental Design. The design in this study is a one-shot case study. Data from the observation results of the assessment of students' scientific communication skills were analyzed using quantitative descriptive methods, by finding the mean and finding the percentage of indicators of scientific communication skills. The results showed that the application of the STEM-integrated PBL model in science learning material additives was able to improve students' scientific communication skills in a good category, with the average result of students' scientific communication being 2.7.
Implementation of the Creative Problem Solving (CPS) Learning Model Based on Information and Communicaton Technologies (ICT) to Improve Mathematics Learning Outcomes
Authors: Miftachurohmah Nisa , Nasruddin Nasruddin , Jahring Jahring , Sugiarto Agus , Anasi Putri Tipa , Syarifuddin Syarifuddin , Sejati Andri Estining
Published: March 2024

This research aims to improve students' mathematics learning outcomes by using a learning model based on Information and Communicaton Technologies (ICT). This research is a Classroom action research qualitative research. This research method consists of: (1) planning (planning); (2) the implementation of the action (action); (3) observation and evaluation (observation and evaluation); (4) reflection (reflection). This research uses descriptive statistical data analysis involving 20 students, including 7 boys and 13 girls and using instruments in the form of student worksheets and interview guidelines for teachers and students. Based on the results of initial observations, it shows that the low learning outcomes obtained by students. This is because teachers have less ability to vary learning models/strategies, where teachers only explain the material to students and then ask questions, but only a few students have an active understanding of concepts/knowledge in learning. Based on the daily test results, before the first cycle of action, only 40% of students with an average score of 60.1 scored 70 from the KKM (Minimum Graduation Criteria), which was 75%. In the first cycle, there was an increase from the initial test which was 40% to 55% of students with an average score of 65.98 who obtained a score of 70, while in the second cycle the test also increased to 85% with an average score of 80.56 who obtained a score 70. The final result of this research is that it can improve Mathematics Learning Outcomes by Applying the ICT-based Creative Problem Solving (CPS) Learning Model.
Development of Guided Inquiry-Based Textbooks on Respiratory System Materials to Improve Critical Thinking Skills
Authors: Rafiqa Rafiqa , Setyorini Dwi , Afiat Nurul
Published: March 2024

This study aims to produce a product of teaching materials in the form of textbooks that are used in the biological learning process on the respiratory system material. The textbooks developed are expected to be in accordance with the needs of students, valid, effective and practical to improve students' critical thinking skills. The research method uses Research and Development (R&D) with the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). The trial was conducted on 30 students of class XI IPA 4 SMAN 5 Palu. The learning method used in applying the textbook product is guided inquiry. Assessment of effectiveness with pretest and posttest. The data collection methods used were validation, observation, questionnaires and tests, while the data analysis techniques used qualitative and quantitative descriptive analysis. Based on the validator's assessment with valid criteria, it is known that the guided inquiry-based human respiratory system textbook that has been developed has an average score of 88.68%. The textbook category developed was very effective on student learning outcomes, seen from the pretest score of 26.32 and posttest of 63.00 with an N-gain value of 0.76. The students' critical thinking ability in the pre-test was obtained 36 while the posttest was 86. Based on the N-gain criteria, namely high with interpretation with very critical critical thinking skills. Learning responses with guided inquiry-based textbooks make students feel interested, easy, up-to-date and easy to understand. The results of the research generally show that the guided inquiry textbooks on respiratory system materials are valid, practical and effective on student learning outcomes and critical thinking skills.
The Influence of Teachers' Professional Development Towards Teacher’s Participation in Program Sekolah Penggerak Development
Authors: Triana Hana , Marini Arita , MS Zulela
Published: March 2024

This study aims to analyze the form of teacher competence professional development towards participation in developing professionalism in the driving school program. This research method uses quantitative methods while quantitative descriptive analysis is carried out on 20 respondents. Interpretation of survey data to identify forms of teacher professional development, expected funding sources and participation in training on implementation of driving schools facilitated by Expert Trainers which are part of mandatory activities in the implementation of the independent curriculum and/or support from the regional/central government or other forms of activity facilitated by the organization or other communities.
The Analysis of Mathematical Literacy Ability in PISA Oriented Questions with Uncertainty and Data Content Based On Gender
Authors: Nasuha Amelia Putri , Ammamiarihta Ammamiarihta
Published: March 2024

The study was carried out in the VIII class of junior school Baitul Aziz of the 2022-2023 school year aimed at analyzing learners' literacy of mathematics skills on the matter of PISA oriented questions with uncertainty and data content. This research implemented a quantitative descriptive method with a cross-sectional research design. The participants of this research was learners of class VIII-1 and VIII-2 as many as 37 learners. The research data included a written test with data analysis by categorizing mathematical literacy abilities into 3 categories, they are low, medium and high. The outcome of the test showed that 1) the mathematical literacy abilities of male learners point to high levels of category at a percentage of 7.14%, a medium figure of 85.71%, and a low category of 7.14%; 2) female learner mathematical literacy abilities indicate at a high category of 17.37%, a medium category of 56.52%, and a low category of 26.09%; 3) it was concluded that the literacy of mathematics of the male learners is equal to the literacy of mathematics of the female learners because the largest percentage of the category falls at medium.
Study and Characterization of Tribofilm based on Activated Carbon-Nanochitosan Modified with Silicone Oil for Application of Self-Healing Coatings on Metal Surfaces
Authors: Sembiring Sarah Mutiara , Humaidi Syahrul , Riana Martha
Published: March 2024

A tribofilm material based on activated carbon and nanochitosan modified with silicone oil has been prepared using the sol gel method with variations in the composition of activated carbon at a mass ratio of 40% wt – 60% wt at 5% wt intervals. Sampling was carried out in two stages. The first stage of the synthesis of activated carbon from palm shells using activation of 7% H3PO4 and nanochitosan derived from shrimp shells using the ionic gelation method. The second stage was mixing the tribofilm material of activated carbon, nanochitosan and silicone oil using the sol gel method to produce a film-forming solution which was then characterized including: physical, chemical, mechanical and thermal properties. The characterization results showed that the most optimum composition was the tribofilm material of activated carbon/nanochitosan/silicone oil in S1 with a mass ratio of 40%wt activated carbon which produced a density of 0.94 x 103 kg/m3, a viscosity of 28.42 cP, and a liquid surface tension of 63.5 mN/m. While the performance characteristics of the metal surface coating produce a surface roughness of 0.162 µm for aluminum metal and 0.156 µm for copper metal, friction coefficient 0.024, wear rate 0.19 mm, thermal conductivity 0.092 W/m.K, corrosion properties 1a (slight tarnish), rate corrosion rate of 2.34 mm/yr in 3.5% NaCl medium, 4.33 mm/yr in seawater medium and 11,476 mm/yr in 3% H2SO4 medium and has good self-healing properties for 3 days on carbon steel metal surfaces with corrosion scratch treatment on 3.5% NaCl media, namely almost all the scratches/cracks covered due to frictional force from galvanic corrosion with active carboxyl, amine and hydroxyl groups with the healing agent aminopropyl siloxane (NH2-R-NH-Si-O-R) which reacts with metal ion particles (M-OH) in the formation of polymer chains for new network layers.
Systematic Literature Review on Auditing Information Technology Risk Management Using the COBIT Framework
Authors: Handayani Rizky , Utami Ema , Luthfi Emha Taufiq
Published: March 2024

Information technology has an important role in carrying out company management activities. It is important that information technology is managed properly so that no risks arise that could endanger the company. Companies can implement information technology risk management through risk management audits. An audit on information technology risk management can help evaluate companies by identifying information technology risks and minimizing information technology risks. Such audits can be carried out with the help of the COBIT framework. This study intends to conduct a systematic literature review on risk management audits related to information technology using the COBIT framework. Literature search from IEEXplore, ScienceDirect and Garuda Kemdikbud database sources. Papers were selected based on inclusion criteria. Inclusion criteria include paper language is Indonesian and English, paper is published between 2019-2023, the paper describes COBIT in IT risk management audits, and paper is available as full text. The results obtained were 24 papers. There are two criteria for assessing paper quality, namely the paper contains the COBIT framework used for IT risk management audits and the paper contains the COBIT domain used. The results of the analysis of research questions indicate that COBIT 5 is a guide used by many researchers in information technology audits for risk management. COBIT 5 provides a complete and comprehensive risk governance guide for measuring enterprise IT risk management. Implementation of COBIT 5 in IT risk management audits to assist in risk assessment and risk management in order to minimize and prevent IT risks that may occur. Domain APO12 (Manage Risk) and EDM03 (Ensure Risk Optimization) as a reference in conducting IT risk management.