bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative Study of Coffee Wood and Fern Board Planting Media on Phalaenopsis amabilis Vegetative Growth in the Seedling Phase
Authors: Sari Gita Maylita , Ulfah Maria , Mulyaningrum Eko Retno
Published: June 2024

Latar Belakang: Phalaenopsis amabilis or referred as the moon orchid, is a popular type of orchid with high market demand. Planting media is factors that can be successful in caring for the Phalaenopsis amabilis, which is an epiphytic orchid type or attaches to other plants. Most orchid planting techniques have not adapted to their natural habitat in nature. Metode: Research method used comparative studies between coffee sticks and fern boards as planting media for Phalaenopsis amabilis on their vegetative growth according to their natural habitat by attach on other plants. The analysis result by statistical tests (t – test upaired) using SPSS. Hasil: The results of the analysis showed that p ≤ 0.05 on the four parameters consisting of the number of leaves 0.01 ≤ 0.05; leaf span parameter 0.001 ≤ 0.05; leaf width parameter 0.0002 ≤ 0.05; root length parameter 0.032 ≤ 0.05. There are differences in the use of planting media types of coffee logs (M1) and fern boards (M2) on the vegetative growth of Phalaenopsis amabilis orchid plants. Kesimpulan: The vegetative growth on M1 and M2 significantly different. The fern board planting media (M2) tends to be more recommended for use because it can be optimal in providing vegetative growth consists of the number of leaves, leaf span, leaf width and root length because its growth is more stable.
Metabolite Profiling and Bioprospecting of Acrolejeunea fertilis (Reinw., Blume & Nees) Schiffn. from Kebun Raya Cibodas, West Java
Authors: Ramadhani Nadhifa Tazkia , Handayani Windri , Yasman Yasman , Putrika Afiatry
Published: June 2024

Background: Acrolejeunea fertilis (liverwort) is known for having various potential natural products. However, its abundance is limited, and its secondary metabolites have not been extensively investigated. The in vitro culture technique might enhance its biomass. Methods: This study aimed to investigate the metabolite profile of A. fertilis from Kebun Raya Cibodas grown in situ and in vitro. The bioactivity, including antioxidant, total phenolic, and flavonoid content and antibacterial activity, was also evaluated. The in vitro culture of A. fertilis used ½ MS media with the addition of 0,1 mg/L of 2,4-D and one mg/L of Kinetin. Methanol and n-hexane were used for extraction. Gas Chromatography-Mass spectrometry (GC-MS) is used for metabolite profiling. Results: The optimum IC50 value from n-hexane extract is 68,18±2,65 mg/L. The highest yield of total phenolic and flavonoid content from in situ methanol extract, which resulted in 130,68±0,002 µgGAE/gr and 5,97±0,01 µgQE/gr, respectively. Antibacterial activities were evaluated by measuring the zone of inhibition for S. aureus and E. coli. The optimum area measured from in situ n-hexane extract was 23,91±1,54 and 13,08±0,23 cm, respectively. Conclusions: These findings carry important implications for the further development of natural products obtained from liverwort regarding its potential as a bioactive compound.
ANALYSIS OF HIGH SCHOOL STUDENT'S KNOWLEDGE OF RECOGNIZING EUCLIDEAN ELEMENTS
Authors: Harisman Yulyanti , Putri Sri Adinda
Published: June 2024

Euclid's Elements is a work written by an ancient Greek mathematician named Euclid in the 3rd century BC. It is one of history's most famous and influential mathematical works, serving as a significant basis for studying geometry and number theory for centuries. This research aims to describe Euclid's Elements and determine the extent of high school students' knowledge about Euclid and his work and their level of understanding in solving mathematical problems. This qualitative research utilizes case study methods and literature reviews. Data were collected through problem-solving exercises and interviews. Thematic data analysis was conducted to elucidate Euclid's Elements and students' level of knowledge. The case study involved presenting mathematics problems and interviewing five high school students, using assessment instruments incorporating problem-solving and open interviews. The findings reveal that many students lack familiarity with the elements of Euclid's Elements but demonstrate proficiency in solving mathematical problems related to it.
ENHANCING PROBLEM-SOLVING SKILLS THROUGH NUMERACY INSTRUMENT DESIGN: INCORPORATING PANDEGLANG’S LOCAL WISDOM IN GEOMETRY CONTENT
Authors: Isnaintri Endah , Yuhana Yuyu , Fatah Abdul
Published: June 2024

Problem solving is a crucial aspect of the education curriculum, as it reflects the skills expected to be possessed by students. Indicating that the majority of students face difficulties in this process. Studies also indicate that numeracy literacy plays a significant role in enhancing mathematical problem-solving skills. This research aims to develop a numeracy literacy assessment that integrates Pandeglang Regency's local knowledge, with a particular emphasis on geometry, to enhance the mathematical problem-solving abilities of Grade IX. This study fits into the Tessmer formative research model, which is related to the category of development research. The study involved 35 ninth-grade students from MTsN 2 Pandeglang as participants. Various tools were used to gather data, such as validation sheets, interview guidelines, and numeracy literacy tests inspired by local knowledge in the Pandeglang Regency. The analysis process included assessing these tools' effectiveness, reliability, and precision through expert assessments and statistical methods. The study's conclusions show that the developed test's quality comprises moderate difficulty for each of the three items, good validity, and satisfactory item discrimination.
ETHNOMATHEMATICS EXPLORATION IN THE TRADITIONAL ART OF RANDAI MINANGKABAU
Authors: Miftahurrahmi Miftahurrahmi , Pratiwi Is Oktaria , Huda Fajrul , Habibi Mhmd
Published: June 2024

Mathematics is a scientific field that delves into numbers, measurements, and formulas. When mathematical concepts intertwine with culture, it forms what is known as ethnomathematics. Integrating mathematics with cultural elements can significantly enhance the learning experience. This research aims to identify and elucidate mathematical elements in the traditional Minangkabau art form of Randai. The methodology employed in this study is qualitative descriptive, utilizing a library research approach. No field studies were conducted; the research relied solely on a literature review. The data utilized comprises documents derived from studies of Randai art and other written references relevant to the research problem. The researcher serves as the primary instrument, indispensable to this study. Data collection methods include documentation and an extensive literature review. The findings reveal that traditional Minangkabau randai art encompasses not only artistic expression but also philosophical insights, cultural values, and mathematical elements, known as ethnomathematics. Ethnomathematics manifests in Randai art through its form, spatial dimensions, and musical instruments.
Edukasi dan Simulasi Heimlich Manouver sebagai Upaya Penanganan Tersedak Anak Usia PAUD
Authors: Fitriana Nurul Fatwati , Riskiyani Dwi Nandia Jumiati , Hakim Nitiprodjo Abdul , Ratna Estria Suci , Widyaningsih Susana , Leona Amelia Vivi , Andodo Candra
Published: June 2024

Background: Choking is an emergency that can occur in children and requires immediate help. This activity aims to increase participants' knowledge and skills in carrying out first aid measures in cases of choking. Method: The partners in this activity are 53 PAUD mothers. The activity was carried out using a presentation using a choking management leaflet, then continued with a Heimlich maneuver simulation utilizing a child's phantom. Results: The participants' knowledge and skills increased, as indicated by their ability to answer questions from the presenter and demonstrate the Heimlich manouver correctly. Conclusion: Educational actions and Heimlich Maneuver simulations can improve participants' knowledge and skills in providing first aid for choking incidents in PAUD and Kindergarten children.
Penerapan Strategi Digital Marketing dalam Upaya Meningkatkan Pendapatan pada UMKM Sarbini Kepiting di Desa Pinggirpapas Kabupaten Sumenep
Authors: Imam Bushiri Moh , Asiyah Siti , Farida Eka
Published: June 2024

Background: Salah satu UMKM yang menarik untuk dibahas adalah UMKM Sarbini Kepiting yang bergerak dibidang usaha seafood yang terletak di Desa Pinggirpapas, Kecamatan Kalianget, Kabupaten Sumenep, Jawa Timur. Sebagian dari para pelaku UMKM masih belum menggunakan pemasaran digital sebagai sarana pemasaran produk. Penelitian ini bertujuan untuk mengetahui penerapan strategi digital marketing dalam upaya meningkatkan pendapatan pada UMKM sarbini kepiting di Desa Pinggirpapas. Metode: Metode yang digunakan penelitian ini menggunakan Analisis SWOT. Hasil: Hasil penelitian ini menunjukkan bahwa UMKM Sarbini masih belum menerapkan strategi Digital Marketing seperti melakukan promosi melalui media sosial ataupun media online sehingga konsumen tidak bisa bersaing luas ke luar daerah. UMKM ini hanya mempunyai google map (lokasi) dan masih belum mempunyai sosial media seperti IG, Tiktok dan media lainnya. Kesimpulan: Pengusaha hendaknya dapat menganalisa maka dari perlu kiranya untuk diperbaiki di masalah strategi pemasarannya untuk meningkatkan pendapatan maka hendaknya lebih baik menerapkan strategi digital marketing seperti melakukan promosi secara online dan membuat akun media sosial.
Influence of Inadequate Sleep on Blood Pressure among the Population in Zakho District
Authors: Abdi Basheer
Published: July 2024

Objective: This study explores the impact of inadequate sleep on blood pressure levels among the population of Zakho district's, Kurdistan Region, highlighting the unique cultural, economic, and geographical factors contributing to these conditions.
Methods: This case-control study involved 1038 participants aged 18-65 years, divided into two groups. 527 cases, who have inadequate sleep <7 hours(n=262), <6 hours (n=194), <5 hours(n=71). and 511 control who have an adequate amount of sleep of 7-9 hours. The study assessed sleep quantity through self-reported sleep duration using an interview questionnaire. Blood pressure was measured three times (with at least a one-minute interval between each reading) using a standard mercury sphygmomanometer and a properly sized cuff. The American Heart Association defines healthy and unhealthy blood pressure ranges. Chi-square and t-tests were used to examine the relationship between sleep duration and hypertension.
Results: The prevalence of all stages of hypertension was significantly higher in the case group than in the control group (p=0.0001) (Table 5). Stage I: 151(58.3% case), 108(41.7% control). Stage II: 106 (60.92% case), 68(39.08% control). Hypertensive crisis: 5 (100% case), 0(0% control). With the Exception of elevated blood pressure which was more prevalent among the control group:129 (60), than case group 86 (40%). Among those with normal blood pressure, the prevalence was also higher in the control group; 206 (53.51% control), 179 (46.49% case).
Conclusion: The study indicates that inadequate sleep durations increase the risk of hypertension. Improving sleep habits could prevent hypertension. Further research is needed in Zakho district to establish the relationship between sleep duration and hypertension. Addressing sleep disturbances can improve public health, especially among high-risk populations.
Implementasi Sistem Digital di Departemen F&B: Meningkatkan Kepuasan Tamu dan Efisiensi Layanan
Authors: Suharto Bambang , Medina Fadita Dwi , Ardianto Kiara Dwiva
Published: June 2024

Abstrak
Jurnal ini akan membahas tentang pentingnya inovasi sistem digital dalam meningkatkan kepuasan tamu dan efisiensi layanan di departemen Food and Beverage (F&B) dalam industri perhotelan. Tujuan artikel ini untuk menguraikan tinjauan tentang berbagai teknologi digital yang telah diadopsi di Departemen F&B, serta dampaknya terhadap kepuasan tamu dan kinerja operasional. Metode yang digunakan adalah pendekatan deskriptif kualitatif. Berbagai penelitian dan studi kasus dianalisis untuk memahami bagaimana implementasi sistem digital seperti perangkat lunak manajemen restoran, aplikasi pemesanan online, dan teknologi Internet of Things (IoT) telah memengaruhi berbagai aspek operasional, mulai dari manajemen inventaris hingga penyediaan layanan.
Kata Kunci: Inovasi sistem digital, Departemen F&B, Kepuasan tamu, Efisiensi layanan, Perhotelan, Restoran.
Abstract
This journal will discuss the importance of digital system innovation in increasing guest satisfaction and service efficiency in the Food and Beverage (F&B) department in the hospitality industry. The purpose of this article is to outline an overview of the various digital technologies that have been adopted in the F&B Department, as well as their impact on guest satisfaction and operational performance. The method used is a qualitative descriptive approach. Various studies and case studies are analyzed to understand how the implementation of digital systems such as restaurant management software, online ordering applications, and Internet of Things (IoT) technologies has impacted various aspects of operations, from inventory management to service provision.
Keywords: Digital system innovation, F&B Department, Guest satisfaction, Service efficiency, Hospitality, Restaurant.
Analisis Peluang Dan Hambatan Penggunaan Sistem Digital Dalam Mengoptimalkan Operasional Bisnis Hotel
Authors: Harji Laisya putri , Suharto Bambang
Published: June 2024

Industri perhotelan telah mengalami perubahan yang signifikan seiring dengan kemajuan teknologi, dengan hotel-hotel modern semakin bergantung pada sistem digital untuk meningkatkan efisiensi operasional dan memperkuat hubungan dengan pelanggan. Penelitian ini bertujuan untuk melakukan analisis menyeluruh terhadap peluang dan hambatan yang terkait dengan penggunaan sistem digital dalam mengoptimalkan operasional bisnis hotel.Dalam penelitian ini, kami menganalisis berbagai aspek yang mempengaruhi implementasi teknologi digital di sektor perhotelan, termasuk faktor-faktor eksternal seperti tren industri dan regulasi, serta faktor internal seperti budaya organisasi dan kemampuan teknologi. Namun, di samping peluang-peluang tersebut, kami juga mengidentifikasi berbagai hambatan yang dapat menghambat adopsi dan implementasi sistem digital, termasuk masalah keamanan data, biaya implementasi yang tinggi, dan tantangan dalam mengubah budaya organisasi. Hasil penelitian ini memiliki relevansi yang signifikan bagi industri perhotelan yang terus berusaha untuk tetap kompetitif di era digital ini. Selain itu, penelitian ini juga dapat menjadi kontribusi bagi literatur akademis tentang manajemen teknologi informasi dan strategi bisnis di sektor perhotelan.
Kata kunci: Sistem Digital, Operasional Bisnis Hotel, Peluang, Hambatan, Teknologi Informasi.
Transformasi Digital Di Bidang Hospitalitas: Menjelajahi Peran Teknologi Dalam Memperlancar Operasional Hotel
Authors: Ramadhan Kemal Zulfikar , Suharto Bambang
Published: June 2024

Transformasi digital telah mengubah lanskap industri hotel secara signifikan. Dengan kemajuan teknologi, hotel-hotel modern semakin mengadopsi solusi digital untuk meningkatkan efisiensi operasional mereka. Studi ini mengeksplorasi peran teknologi digital dalam memperlancar operasional hotel, dengan fokus pada manfaat dan tantangan yang terkait. Melalui analisis studi kasus dari beberapa hotel, kami meninjau implementasi sistem manajemen hotel berbasis digital, integrasi platform reservasi online, dan penerapan teknologi di berbagai area operasional. Hasil penelitian menunjukkan bahwa transformasi digital dapat secara signifikan meningkatkan efisiensi, mengoptimalkan layanan tamu, dan meningkatkan kepuasan pelanggan. Namun, tantangan seperti ketergantungan pada infrastruktur teknologi dan perlunya pelatihan karyawan secara menyeluruh juga harus diatasi. Studi ini memberikan wawasan berharga bagi pembaca dan profesional industri hospitalitas tentang bagaimana memanfaatkan teknologi digital secara efektif untuk meningkatkan kinerja operasional dan studi ini memberikan pemahaman yang lebih dalam tentang manfaat dan tantangan implementasi inovasi digital dalam konteks operasional hotel.
Kata kunci : Inovasi Digital, Efisiensi Operasional, Implementasi Teknologi, Tantangan dan Hambatan ,Manajemen Operasional, Evaluasi Dampak
Specific Sequence Motif of Var Gene as Predictor of Malaria Outcome
Authors: Sulistyaningsih Erma , Dewi Rosita , Rachmania Sheilla , Kusuma Irawan Fajar , Sillehu Sahrir
Published: July 2024

Abstract: The Var gene family encodes for Plasmodium falciparum Erythrocyte Membrane Protein-1 (PfEMP1), a protein responsible for malaria pathogenesis. One of the variants, the var D gene, is hypothesized as a predictor of clinical malaria outcomes. The study aimed to investigate the association between the expression of the var D gene and clinical malaria outcomes. Blood spots on filter paper from uncomplicated and severe malaria patients were collected for DNA and RNA extraction. The RNA was reverse-transcribed into cDNA. DNA and cDNA were amplified by Polymerase Chain Reaction (PCR) technique using specific var D primer, and PCR products were electrophorized in 1% agarose. DNA amplification resulted in double bands of approximately 230 bp and 250 bp in uncomplicated and severe malaria samples. However, the cDNA amplification generated a single band of 230 bp from four out of five severe malaria samples. The existence of band solely in severe malaria transcript suggested its involvement in the pathogenesis of severe malaria. In conclusion, the expression of var D gene-specific sequence can be a potential predictor of severe malaria outcomes.Abstrak: Famili gen var mengkode Plasmodium falciparum Erythrocyte Membrane Protein-1 (PfEMP1), suatu protein yang berperan penting dalam proses patogenesis malaria. Salah satu variannya, gen var D, diduga merupakan prediktor gambaran klinis malaria. Penelitian ini bertujuan untuk mengetahui hubungan antara ekspresi gen var D  dan gambaran klinis malaria. Sampel berupa tetesan darah pada kertas filter dari pasien malaria tanpa komplikasi dan malaria berat dikumpulkan untuk diekstraksi DNA dan RNAnya. RNA selanjutnya di trankripsi reverse menjadi cDNA. DNA dan cDNA diamplifikasi dengan teknik PCR menggunakan primer spesifik var D dan produk PCR dielektroforesis menggunakan agarosa 1 %. Amplifikasi DNA menghasilkan beragam pita berukuran sekitar 230 bp dan 250 bp pada sampel malaria tanpa komplikasi dan malaria berat, tetapi amplifikasi cDNA hanya menunjukkan satu pita berukuran 230 bp pada 4 dari 5 sampel malaria berat. Keberadaan pita hanya pada sampel malaria berat mengindikasikan peran gen ini dalam patogenesis malaria berat. Disimpulkan bahwa gen var D dapat ditemukan pada sampel malaria tanpa komplikasi dan berat, namun ekpresi gen tersebut dapat menjadi prediktor yang potensial  timbulnya manifestasi klinis malaria berat.
The Core Question of Indiscernibles: The Presence of Goodman's Theory of Representation in Arthur Danto's The Transfiguration of the Commonplace
Authors: Menon Junior Walter
Published: June 2024

This article presents the relevance of Nelson Goodman’s theory of representation to the problem of indiscernibles, as proposed by Arthur Danto. To do so, I first present the problem in the way it was suggested to Danto by Warhol’s Brillo Box. Next, I focus on showing its relevance in three thought experiments presented by Danto in The Transfiguration of the Commonplace and the consequences he extracts from them. After briefly exposing the main elements of Goodman's theory of representation, which is mainly exposed in Languages of Art, I seek to show that the consequences drawn by Danto use Goodman’s ideas.
De Hegel a Danto e de volta: fim da arte e fim da história como diagnóstico da modernidade
Authors: Leite Ramon O. da Silva
Published: June 2024

Este estudo busca esclarecer as teses sobre o Fim da Arte de Danto e Hegel, assim como a tese do Fim da História, articulando-as para proporcionar um diagnóstico do presente. Ao compreender a tese do Fim da Arte de Danto, é possível reexaminar o alcance de sua influência hegeliana. Além disso, entendendo a peculiaridade do Fim da História em Hegel, podemos reconsiderar a tese de Danto sobre o Fim da Arte. Assim, os fins com os quais estaríamos às voltas seriam indícios de que ainda não saímos dos confins da modernidade. Espera-se que a reflexão proposta permita apontar uma nova forma de pensar o futuro, tanto da arte como do mundo.
O mundo da arte e a definição essencialista: seria Danto um wittgensteiniano?
Authors: Correia Vrndavana V. L. , Azevedo Silva Fernanda
Published: June 2024

O artigo visa investigar a relação entre a busca pela essência dos objetos de arte e a noção de "mundo da arte" nos escritos de Arthur Danto. Para tal, partimos da exposição das ideias antiessencialistas de tipo wittgensteiniano de meados do século XX, para depois ressaltar o comprimisso de Danto com as teses essencialistas e os pressupostos que atribui às definições de arte. Em seguida, retomamos o conceito de "mundo da arte" na obra do autor e o modo como tal conceito se articula à ideia de um discurso de razões que fundamentaria a prática e a identificação artísticas. Por fim, argumentamos que recorrer a tal discurso de razões minaria o projeto definitório e aproximaria inadvertidamente as teses de Danto das teses antiessencialistas que o autor reiteradamente rechaza.
Nada terá lugar a não ser o real: o devir realista após o fim da arte
Authors: Beccari Marcos
Published: June 2024

O artigo propõe uma reflexão sobre o realismo enquanto chave de interpretação de Após o fim da arte de Arthur Danto. Para tanto, o livro em questão é abreviado em sua tese do fim das narrativas mestras da arte atrelado a uma não distinção entre arte e realidade. Em seguida, retoma-se o circuito discursivo em que essa tese se inseria, e no qual outros debates eram suscitados em torno do realismo. Por fim, a tese pós-histórica é ressituada mediante as implicações realistas e controvérsias políticas que constelam ao redor dela.
Significados incorporados e a questão retórica da arte em Arthur Danto
Authors: Nascimento Charliston Pablo do
Published: June 2024

O problema da definição da arte é medular para a filosofia da arte de Arthur Danto. Sendo o esteta um essencialista, e cuja teoria estética compreende a condição histórica da arte como característica extensional de seu essencialismo, a objetividade de uma definição ao mesmo tempo apresenta à sua teoria um fundamento para distinguir obras de arte de objetos comuns, como também oferece a ela um ponto de partida em torno do qual suas outras teses sobre a arte podem, com seguridade, se assentarem. Essa teoria, contudo, desdobrou-se em um conjunto de impasses justamente ao apresentar uma fórmula da definição, representada pelo enunciado “ser uma obra de arte é ser (i) sobre algo e incorporar seu significado”. No presente artigo, demonstrarei que a formulação de Danto encobre um dos aspectos mais importantes de sua filosofia da arte, o conceito de retórica, indispensável não apenas para o sustento de sua teoria da definição, como também para uma adequada compreensão de sua própria fórmula.
Carta à posteridade
Authors: Bogéa Anderson
Published: June 2024

No ano de 2012, Arthur C. Danto escrevera uma carta de retrospectiva de sua vida na filosofia e na arte. Inicialmente, publicada no volume 81 do The American Scholar, e postumamente republicado em um livro dedicado ao seu pensamento e filosofia, em 2022, editado por Jonathan Gilmore e Lydia Goehr.
SURFACE PLASMON RESONANCE ANALYSIS FOR BENZENE SENSING MEDIA USING SILVER AND Ta2O5 THIN FILMS
Authors: Mohamad Haidar J. , Kafia Shaymaa H. , Kadhum Farah J.
Published: July 2024

The increasing demand for optical sensors is driven by their wide applications, making surface plasmon resonance (SPR) play a crucial role in this field. In this study, a multilayered thin film consisting of tantalum pentoxide (Ta2O5) and silver (Ag) deposited on a glass prism was used to study SPR. The Ag layer thickness was fixed at 50 nm, while the Ta2O5 layer thickness varied from 0 to 70 nm. The Kretschmann configuration was employed to assess the sensitivity of air and gases with different refractive indices. Therefore, different layer thicknesses along with different wavelengths and angles were investigated. MATLAB software was employed to simulate and analyze SPR with a half-sphere prism to extend the incident angle. The simulation conditions with Fresnel equations were used to calculate the reflectivity and transmittance coefficients for the studied sample. The results revealed that the best output was at a Ta2O5 thickness of 50 nm to get optimal full width at half maximum of 2.4 and sensitivity factor of 162.5. This device works in the visible and infrared regions.
Does Motivation Impact Employees' Job Performance in Public Sector Organizations? A Myth or A Reality
Authors: Nasir Hilaly Uzaima , Sadaf Nagi  , Noman Soomro  , Shafiq-ur-Rehman
Published: June 2024

This study's objective was to identify the impact of intrinsic and extrinsic motivation on the job performance of the employees of public sector organizations. To conduct the study, employee engagement was incorporated as a mediating variable, and the working environment was incorporated as a controlled variable. The study's research methodology was explanatory, with a deductive approach and positivist research philosophy. The study data was cross-sectional and collected through convenience-based sampling from respondents with a grade level of BPS-16 and above. The collected data was analyzed using hierarchical regression analysis through IBM-SPSS. The findings showed intrinsic and extrinsic motivation's direct and indirect contribution to job performance by mediating employee engagement. The study's originality to the literature remained the utilization of employee engagement and working environment as mediating and controlled variables to assess the impact of motivation.
Gauging Returns and Volatility of Crude Oil using GARCH Approach
Authors: Abdul Ghaffar  , Ahmad Dr Nawaz , Muhammad Siddique
Published: June 2024

This paper uses two distinct types of crude oil to measure the returns and volatility of crude oil: Brent and West Texas Intermediate (WTI). The time series data of two crude oil prices per barrel, collected from the international market, calculates the volatility and returns. The data spans from February 1, 2014, to February 1, 2024. 2537 observations are considered for WTI, and 2542 observations are taken for Brent in this paper. This study uses the E-view model to analyse the secondary data and look up the ARCH and GARCH impacts at a significance level. The mean reversion of WTI is 0.993582, and Brent crude mean reversion is 0.956194. The results show that WTI has a slower mean reversion than Brent because it is closer to 1. Further half-life model analysis showed that WTI reverted to its mean position after 99 days and Brent after 16 days. This study concludes that WTI is more volatile than Brent crude oil.
A Meta-Review on Hoarding in Older Adults : Interventions and Influencing Factors
Authors: Lee Joon-yup , Lee Mi-jin , Yang Ho-jung ,   Korean Academy of Integrated Care Management
Published: July 2024

This study sought to identify practical methods and influencing factors for intervening in hoarding behavior. To achieve this, a meta-review was conducted. A meta-review is a research methodology that summarizes and presents findings from existing systematic reviews. An electronic search was conducted in PubMed, SCOPUS, and Web of Science, using the following search phrase: “hoarding” OR “self-neglect” OR “squalor” AND “older adults” AND “systematic review.” A narrative synthesis was conducted to identify effective interventions and influncing factors.
The initial search yielded 102 studies. After the screening processes, four studies were eligible for review. The analysis revealed that cognitive-behavioral therapy emerged as an effective intervention method for hoarding behavior. From the data synthesis, four factors that positively influence the intervention emerged: 1) adherence to manualized cognitive-behavioral therapy; 2) demographic characteristics (gender, age); 3) individual and group therapy, treatment duration, and frequency of home visits; and 4) pharmacological treatment. Conversely, factors that negatively affected the intervention included: 1) a small sample size; 2) higher dropout rates; and 3) a lack of focus on intervention.
Based on the results, this study provides an effective intervention method and implications applicable in social work settings. Also, it proposes strategies to mitigate factors that negatively impact interventions and suggests the establishment of an educational system to enhance practitioners’ capabilities.
The role of trees in enhancing outdoor thermal comfort during warm season in a sub-humid climate. Case: Souk Ahras city
Authors: Khelifa Fatma , Mahimoud Aissa , Alkama Djamel , Hanafi Abdel
Published: July 2024

Enhancing the quality of life for people in urban areas necessitates focusing
on outdoor thermal comfort OTC. This study examines the role and impact of
urban vegetation, particularly trees, in improving the meteorological
conditions that characterize the urban microclimate in order to enhance OTC,
focusing on two public spaces in Souk Ahras city, characterised by in situ
measurement campaigns and modelling during hot summer day. In situ campaigns
were carried out to measure climatic data (air temperature, relative
humidity and wind speed), and to collect data on vegetation (trees) and
building geometry, which were used in numerical modelling to calculate the
various thermal indices: SVF, Tmrt, PET and OUT_SET using the Rayman
microclimatic model. The results show that the trees at each intervention
site can reduce the average daily air temperature of 0.376?C to 1.04?C and
an enhancement of thermal comfort in terms of average radiant temperature
Tmrt of 2.08?C to 5.85?C and equivalent physiological temperature PET of
1.91?C to 3.84?C and standard equivalent temperature OUT_SET of 1.72?C to
2.86?C. in the knowledge that trees also help to reduce the Skye view
factor, an essential geometric measure for assessing the thermal
environment, which proves that the effect of shading and evapotranspiration
provided by trees mainly contribute to enhancing outdoor thermal comfort
during the warm season.
Innovative Learning Media: Ethnomathematics-based Modules for Third-Grade of Elementary School Students
Authors: Masruroh Miftakhul , Amir Mohammad Faizal
Published: June 2024

Low learning outcomes on the properties of flat shapes for grade three elementary school students are indicated due to the unavailability of adequate modules. Meanwhile, third-grade students find it easier to learn math through cultural sites as a form of ethnomathematics. This study aims to develop an ethnomathematics-based module that is valid, practical, and effective in improving the learning outcomes of third-grade students on the material properties of flat shapes. This study uses the research and development method through the stages of analysis, design, development, implementation, and evaluation (ADDIE). The subjects of this study were 22 third-grade elementary school students. The validity of the module was measured through validator assessment using a validation questionnaire. The practicality of the module was measured using a student response questionnaire. Effectiveness was measured by comparing pre-test and post-test scores. Data collection techniques used questionnaires and tests. The validity results obtained an average value of 1 in the interval 0.80-1,00 with very valid criteria. Practicality obtained a value of 94% in the interval 85.01%-100% with very practical criteria. Effectiveness obtained a significance value of 0.000<0.05, which can improve student learning outcomes. Hence, the implication of the results of this development research is to provide a model or example of valid, practical, and effective ethnomathematics-based modules to improve the learning outcomes of third-grade students on the properties of flat shapes material.
Learning Management System Difficulties during the Learning Process in Higher Education
Authors: Jasiyah Rabiyatul , Rumahlewang Emma , Mundung Bertha Ireni , Sairdama Syusantie Sylfia , Saputra Nanda
Published: June 2024

The implementation of learning management system, lecturers must prepare the necessary materials and components. However, the fact is that there are 63% difficulties in compiling material in the learning management system. The research aims to analyze the impact of implementing learning using LMS in higher education and to find solutions to overcome obstacles and difficulties in implementing learning using a learning management system. The research method used is a survey by distributing instruments. Data collection techniques were by distributing instruments to 132 people consisting of lecturers and students who are directly involved in the learning process and conducting random interviews to ensure the correctness of the data from the survey. Analysis techniques using SPSS Version 25.0 by forming bar charts, line charts, and pie charts and interpreting them. As a result, the obstacles, difficulties, and impacts of using the learning management system during the learning process were found. The obstacles and difficulties lie in the preparation of materials, models, and assessment tools used which are not provided to students through the LMS. The material is not stated in the media used and is not given an assessment to students, so the impact is that students are unable to measure their abilities. In conclusion, every lecturer must prepare materials, models, and assessment instruments before using the learning management system in implementing course learning.
Team Based Learning Model to Improve Student Collaboration and Communication through Lesson Study
Authors: Wikanengsih  , Rostikawati Yeni
Published: June 2024

Competencies that must be mastered by students include communicative, critical thinking, creativity, and collaborative. However, two of the four competencies are still weak. This is evident from observations during lectures, student collaboration and communication during discussions dominated by certain students. Therefore, this study aims to analyze the implementation of the application of the TBL learning model in improving student collaboration and communication in the Indonesian Learning Evaluation course through lesson study. The research method used is quantitative descriptive. The research subjects were lecturers of the Learning Evaluation Course and 36 third semester students in the Indonesian Language and Literature Education Study Program. Data collection is done through observation. Data analysis was carried out by observers by giving scores for each indicator of student collaboration and communication. The data obtained is analyzed quantitatively descriptively which then becomes the basis for improving learning. The results showed that the application of the TBL model could be carried out well with scores obtained at the first meeting of 86.5 and 91.1 at the second meeting. Likewise, students' communication and collaboration skills have improved, namely students contribute actively to learning, work productively, show flexibility and compromise, show responsibility and show respect between friends. The average score of students' communication and collaboration skills was 72.55 at the first meeting and 88.5 at the second meeting. This shows that the use of TBL is effective in improving student collaboration and communication in the classroom.
GASEKO: Scramble Game Media to Increase Elementary School Students’ Learning Independence
Authors: Darmayanti Ni Kadek Eka Budi , Suarjana I Made
Published: June 2024

The lack of diversity in digital media and the low degree of student learning independence in primary schools prompted this development inquiry. In order to help fourth graders become more self-reliant learners, this study seeks to develop a realistic, practical, and successful economic scramble game (GASEKO) for classroom usage. The goal of this research was to analyze the extent to which fourth grade primary school pupils were able to learn independently, and the subjects’ included students, learning technology experts, and subject matter experts. The five-stage ADDIE model—which is used in this development study—consists of the following steps: analysis, design, development, implementation, and evaluation. A questionnaire or surveys are the tools utilized for gathering information. Fifteen primary school pupils in the fourth grade participated in the product trial. Qualitative, quantitative, and statistical descriptive analytic methods were employed to examine the study data. We can conclude that GASEKO media is a viable, practical, and effective strategy for enhancing the learning independence of fourth graders based on the following evidence: (1) GASEKO media has strong credentials from expert validation; (2) GASEKO media has very good credentials according to student responses; and (3) GASEKO media significantly impacts fourth graders' learning independence. This study's findings suggest that GASEKO media can broaden the range of educational resources available to schools, leading to more engaging and effective lessons for students.
On the nature of electric and gravitational fields
Authors:   Lviv Polytechnik National University, Tchaban Vasyl
Published: June 2024

Based on the fundamental laws of statics – Newton's and Coulomb's – generalized to the case of dynamics (motion - the interaction of mechanical masses and electric masses (charges),), an attempt was made to explain the physical essence of electric and gravitational fields. as specific forces per unit of main mass. In theoretical exercises, the finite velocity of propagation of the field is taken into account. The veil has been lifted somewhat on the hitherto unknown unity of both fields through the units of LMTI dimensions. Such a deepening into the world of two disciplines – electricity and mechanics – is useful for an in-depth understanding of physical processes, and at the same time for their quantitative identification.
Optimal control problem of a discrete spatiotemporal prey–predator three-species fishery model
Authors:   Fundamental and Applied Mathematics Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Sakkoum A. , Toufga H. ,   Fundamental and Applied Mathematics Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Hizazi H. ,   Fundamental and Applied Mathematics Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Lhous M. ,   Fundamental and Applied Mathematics Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Magri E. M. ,   Fundamental and Applied Mathematics Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca
Published: July 2024

In this work, we discuss a spatiotemporal discrete prey–predator model. It consists of three compartments: prey, predator, and super-predator. The proposed model describes the interaction between prey, predator, and super-predator in a region with a discrete displacement. We also provide research on appropriate regional control strategies. The controls are applied to the predator and the super-predator, respectively; they represent catching these in measured quantities in a space and a time chosen. The aim is to increase the number of prey and reduce the number of predators, restore the food chain system, and ensure its sustainability. Finally, we provide graphical visuals and numerical simulations to support our analytical findings.
Stress state modeling of non-circular orthotropic hollow cylinders under different types of loading
Authors:   Department of Theoretical and Applied Mechanics of the National Transport University, Rozhok L. S. , Kruk L. A. ,   Department of Theoretical and Applied Mechanics of the National Transport University, Isaienko H. L. ,   Department of Information Analysis and Information Security of the National Transport University, Shevchuk L. O. ,   Department of Foreign Philology and Translation of the National Transport University
Published: July 2024

Based on a spatial model of the linear theory of elasticity, using an unconventional approach of the reduction of the original three-dimensional boundary value problem described by a system of partial differential equations with variable coefficients to a one-dimensional boundary value problem for a system of ordinary differential equations with constant coefficients, the problem of finding the dimensional stress of hollow elliptic orthotropic cylinders under the influence of various types of loading has been solved under certain boundary conditions at the orientation plane. Reducing the dimensionality of the original problem is carried out using analytical methods of separating variables in two coordinate directions in combination with the method of approximating functions by discrete Fourier series. The one-dimensional boundary value problem is solved by the stable numerical method of discrete orthogonalization.
Intra/Inter Paradox
Authors: Wieland Jan Willem
Published: June 2024

This paper addresses the following paradox. (P1) It is permitted to defect in intrapersonal dilemmas as long as there is a solution to achieve one’s long-term goal. (P2) It is not permitted to defect in interpersonal dilemmas, even when there is a similar solution to achieve a collective goal. (P3) There is no relevant difference between intrapersonal and interpersonal dilemmas. At least one of the three propositions must go. In this paper, I show how (P1) is supported by Chrisoula Andreou’s work, and offer a defense of (P2). This has surprising implications. The aim will not be to solve the paradox, but rather to show there is one that we should attend to in the first place.
Serat gumuyu: Sumber pengaruh untuk membentuk persepsi kebahagiaan dan kesehatan mental masyarakat
Authors:   Program Studi Sastra Jawa, Fakultas Bahasa dan Seni, Universitas Negeri Semarang, Alhaidar Muhammad Said Agil , Widodo Widodo ,   Program Studi Sastra Jawa, Fakultas Bahasa dan Seni, Universitas Negeri Semarang
Published: June 2024

The manuscript is one of the cultural relics of the past which is a source of cultural institutions of the community. The manuscript is also used as a reflection of local wisdom and a foundation for oral traditions, art, and Javanese values, as is the case with the Serat Gumuyu script. This study uses a qualitative descriptive approach to obtain complete information about laughter can shape the perception of each individual to manage a more positive mindset so as to form happiness and improve people's mental health from Serat Gumuyu. The theory used is Seligman's mental health theory, which focuses on the psychological aspects of mental health and which focuses on positive psychological theories, especially happiness. This research data is in the form of quotes derived from Serat Gumuyu. The source of this research data is Serat Gumuyu, serial number NB 1567 code obtained from manuscripts in the collection of the National Library of the Republic of Indonesia. The data collection method uses content analysis techniques to describe the manuscript, editing and transliteration. The text is hermeniutic analyzed by Ricoeur to explore the axis of the roots of cultural forces socially and mental health in Javanese society. This research presents how laughter in Serat Gumuyu contains the benefits and factors that make someone laugh. This serat invites us that the positive influence of laughter can provide many benefits and is not visible physically but in human mental health also becomes better and optimal. Keywords: Serat Gumuyu, laugh, mental health
Makna denotasi, konotasi, dan mitos dalam esai “saya dan islam” karya linda christanty: Kajian semiotika roland barthes
Authors:   Program Studi Bahasa dan Sastra Arab, Universitas Islam Negeri Sunan Kalijaga, Hidayatullah Muhammad Rizki , Nisa Khoirun ,   Program Studi Pendidikan Guru Madrasah Ibtidaiyyah, Universitas Islam Negeri Maulana Malik Ibrahim Malang
Published: June 2024

The purpose of this research is to describe the meaning of denotation, connotation and myth in the essay "me and Islam" by Linda Christanty. The theory used is Roland Barthes' semiotic theory. The method uses a qualitative method. Then the results of this study show that there are 4 denotation meanings, 4 connotation meanings which include elements of Linda Christanty's name, the school used and the habits carried out by linda in her environment. Then there is the myth contained in this essay "Me and Islam" by Linda Christanty, namely, there is a sentence or proverb that says "Don't Judge a Book by its Cover" which means don't judge someone just by their appearance. Because Islam is a religion to anyone who believes in its teachings and has no connection with culture, while the flow, customs, are a culture of a separate nation. By utilizing the study of semiotics, in this analysis, in particular, it is possible to be more careful in assessing a person, both from the name, stream, culture, and habits carried out by a person. Keywords: Essay, Me and Islam, Semiotics, Roland Barthes
The Influence of Financial Literacy and Socio-Demographics on the Financial Management Behavior of Migrant Students in Surabaya
Authors:   Universitas Kristen Petra, Cynthia Angelina , Linawati Nanik
Published: June 2024

This research aims to analyze the influence of financial literacy and sociodemographic characteristics on the financial management of migrant students in Surabaya. We employed a quantitative descriptive approach and collected data through a shared Google Form. The analysis was conducted using Stata software. The results of our research reveal that a higher level of financial literacy has a positive and significant impact on the financial management abilities of migrant students. However, sociodemographic factors such as age, gender, and income do not exhibit a significant influence on their financial management. This analysis provides valuable insights into the significance of enhancing financial literacy among migrant students, thereby assisting them in improving their financial management skills.
Desain dan Evaluasi Kinerja Sistem Kendali Otomasi Air Kolam Pembibitan Lele (Clarias sp.)
Authors: Desrial Desrial , Yahya Abdul Kodir Delphi Yahya
Published: June 2024

Catfish nurseries are required to be able to see the appropriate needs for catfish larvae, especially in pond water quality. However, in its application, generally adjustments to the needs of water quality are only carried out without any special treatment, so that the survival obtained is still low. The purpose of this research is to make a machine that can control the quality of catfish breeding water, test the performance of the machine and the effect of its use. This study used the method of formulating and evaluating the design and testing the performance of the machine which consisted of several stages, including: formulating and evaluating the design, manufacturing the machine, functional testing, performance testing, and the influence of the machine performance. The results obtained after testing were the performance of the machine affecting the speed of hatching eggs, the growth rate and survival of catfish larvae. The speed of hatching catfish eggs is 4 hours faster using a machine. The growth rate using a machine is 0.061g/head, while without using a machine it is 0.053g/head. The survival of fish larvae using machine was 80.3%, while without using machine was 63.1%. Keywords: Control, Fish Larvae, Growth Survival, Water Quality.