bluuebunny/crossref_metadata_2025 huggingface dataset:
Eating Behavior and Satiety With Virtual Reality Meals Compared With Real Meals: Randomized Crossover Study
Authors: Glympi Alkyoni , Odegi Dorothy , Zandian Modjtaba , Södersten Per , Bergh Cecilia , Langlet Billy
Published: August 2023

Background

Eating disorders and obesity are serious health problems with poor treatment outcomes and high relapse rates despite well-established treatments. Several studies have suggested that virtual reality technology could enhance the current treatment outcomes and could be used as an adjunctive tool in their treatment.

Objective

This study aims to investigate the differences between eating virtual and real-life meals and test the hypothesis that eating a virtual meal can reduce hunger among healthy women.

Methods

The study included 20 healthy women and used a randomized crossover design. The participants were asked to eat 1 introduction meal, 2 real meals, and 2 virtual meals, all containing real or virtual meatballs and potatoes. The real meals were eaten on a plate that had been placed on a scale that communicated with analytical software on a computer. The virtual meals were eaten in a room where participants were seated on a real chair in front of a real table and fitted with the virtual reality equipment. The eating behavior for both the real and virtual meals was filmed. Hunger was measured before and after the meals using questionnaires.

Results

There was a significant difference in hunger from baseline to after the real meal (mean difference=61.8, P<.001) but no significant change in hunger from before to after the virtual meal (mean difference=6.9, P=.10). There was no significant difference in food intake between the virtual and real meals (mean difference=36.8, P=.07). Meal duration was significantly shorter in the virtual meal (mean difference=–5.4, P<.001), which led to a higher eating rate (mean difference=82.9, P<.001). Some participants took bites and chewed during the virtual meal, but the number of bites and chews was lower than in the real meal. The meal duration was reduced from the first virtual meal to the second virtual meal, but no significant difference was observed between the 2 real meals.

Conclusions

Eating a virtual meal does not appear to significantly reduce hunger in healthy individuals. Also, this methodology does not significantly result in eating behaviors identical to real-life conditions but does evoke chewing and bite behavior in certain individuals.

Trial Registration

ClinicalTrials.gov NCT05734209, https://clinicaltrials.gov/ct2/show/NCT05734209
A Fast and Minimal System to Identify Depression Using Smartphones: Explainable Machine Learning–Based Approach (Preprint)
Authors: Ahmed Md Sabbir , Ahmed Nova
Published: August 2023

BACKGROUND

Existing robust, pervasive device-based systems developed in recent years to detect depression require data collected over a long period and may not be effective in cases where early detection is crucial. Additionally, due to the requirement of running systems in the background for prolonged periods, existing systems can be resource inefficient. As a result, these systems can be infeasible in low-resource settings.

OBJECTIVE

Our main objective was to develop a minimalistic system to identify depression using data retrieved in the fastest possible time. Another objective was to explain the machine learning (ML) models that were best for identifying depression.

METHODS

We developed a fast tool that retrieves the past 7 days’ app usage data in 1 second (mean 0.31, SD 1.10 seconds). A total of 100 students from Bangladesh participated in our study, and our tool collected their app usage data and responses to the Patient Health Questionnaire-9. To identify depressed and nondepressed students, we developed a diverse set of ML models: linear, tree-based, and neural network–based models. We selected important features using the stable approach, along with 3 main types of feature selection (FS) approaches: filter, wrapper, and embedded methods. We developed and validated the models using the nested cross-validation method. Additionally, we explained the best ML models through the Shapley additive explanations (SHAP) method.

RESULTS

Leveraging only the app usage data retrieved in 1 second, our light gradient boosting machine model used the important features selected by the stable FS approach and correctly identified 82.4% (n=42) of depressed students (precision=75%, F1-score=78.5%). Moreover, after comprehensive exploration, we presented a parsimonious stacking model where around 5 features selected by the all-relevant FS approach Boruta were used in each iteration of validation and showed a maximum precision of 77.4% (balanced accuracy=77.9%). Feature importance analysis suggested app usage behavioral markers containing diurnal usage patterns as being more important than aggregated data-based markers. In addition, a SHAP analysis of our best models presented behavioral markers that were related to depression. For instance, students who were not depressed spent more time on education apps on weekdays, whereas those who were depressed used a higher number of photo and video apps and also had a higher deviation in using photo and video apps over the morning, afternoon, evening, and night time periods of the weekend.

CONCLUSIONS

Due to our system’s fast and minimalistic nature, it may make a worthwhile contribution to identifying depression in underdeveloped and developing regions. In addition, our detailed discussion about the implication of our findings can facilitate the development of less resource-intensive systems to better understand students who are depressed and take steps for intervention.
Eating Behavior and Satiety With Virtual Reality Meals Compared With Real Meals: Randomized Crossover Study (Preprint)
Authors: Glympi Alkyoni , Odegi Dorothy , Zandian Modjtaba , Södersten Per , Bergh Cecilia , Langlet Billy
Published: August 2023

BACKGROUND

Eating disorders and obesity are serious health problems with poor treatment outcomes and high relapse rates despite well-established treatments. Several studies have suggested that virtual reality technology could enhance the current treatment outcomes and could be used as an adjunctive tool in their treatment.

OBJECTIVE

This study aims to investigate the differences between eating virtual and real-life meals and test the hypothesis that eating a virtual meal can reduce hunger among healthy women.

METHODS

The study included 20 healthy women and used a randomized crossover design. The participants were asked to eat 1 introduction meal, 2 real meals, and 2 virtual meals, all containing real or virtual meatballs and potatoes. The real meals were eaten on a plate that had been placed on a scale that communicated with analytical software on a computer. The virtual meals were eaten in a room where participants were seated on a real chair in front of a real table and fitted with the virtual reality equipment. The eating behavior for both the real and virtual meals was filmed. Hunger was measured before and after the meals using questionnaires.

RESULTS

There was a significant difference in hunger from baseline to after the real meal (mean difference=61.8, P<.001) but no significant change in hunger from before to after the virtual meal (mean difference=6.9, P=.10). There was no significant difference in food intake between the virtual and real meals (mean difference=36.8, P=.07). Meal duration was significantly shorter in the virtual meal (mean difference=–5.4, P<.001), which led to a higher eating rate (mean difference=82.9, P<.001). Some participants took bites and chewed during the virtual meal, but the number of bites and chews was lower than in the real meal. The meal duration was reduced from the first virtual meal to the second virtual meal, but no significant difference was observed between the 2 real meals.

CONCLUSIONS

Eating a virtual meal does not appear to significantly reduce hunger in healthy individuals. Also, this methodology does not significantly result in eating behaviors identical to real-life conditions but does evoke chewing and bite behavior in certain individuals.

CLINICALTRIAL

ClinicalTrials.gov NCT05734209, https://clinicaltrials.gov/ct2/show/NCT05734209
Quality Assessment of Temporomandibular Disorders related Information on Chinese Social Medias: A Cross-sectional Study (Preprint)
Authors: Deng Yifei , Zhou Jianing , Long Yifei , Chen Li , Luo Wenxin , Xiong Xin
Published: August 2023

BACKGROUND

Temporomandibular disorders (TMDs) affect people’s quality of life greatly, and the precise understanding of TMDs contributes to a proper treatment choice. Social media, is one of the most fundamental and efficient ways for patients to receive related information, hence there is an urgent need to evaluate the quality of information related to TMDs on social medias.

OBJECTIVE

This research aims to assess the quality of information about TMDs on two mainstream social media platforms, WeChat and Zhihu, as sources of medical information. They will be evaluated from three aspects: credibility, concreteness, and accuracy.

METHODS

Researchers searched for articles about TMDs on WeChat and Zhihu and selected the samples. The DISCERN instrument was adopted to grade the credibility and concreteness of these articles and divided them into five groups according to their scores: excellent (score>63), good (62.5>score>51), fair (50.5>score>39), poor (38.5>score>27) and very poor(score<26.5). The accuracy was tested against authoritative journals and textbooks. The HONcode and Global Quality Scale (GQS) were used as supplemental tools. Two researchers conducted this process independently, and the intraclass correlation coefficient (ICC) was used to examine the consistency between the two researchers.

RESULTS

After selection, 80 articles were selected at all, including 26 articles from WeChat and 54 articles from Zhihu. The DISCERN instrument reported a mean score of 39.79 (SD 6.11) out of 80. No article got more than 63 points, and most of the samples got less than 50 points. Articles on WeChat and Zhihu did not perform well for credibility and concreteness, and the overall mean score was 22.63 out of 40 (SD 3.24) and 14.23 out of 35 (SD 3.85) respectively. As for accuracy, the results demonstrated that the two platforms did well in this area. Most articles (70 of 80) got 3.5 and 3.5 plus out of 5 in case of accuracy. HONcode reported a mean score of 6.04 out of 16 (SD 1.16) while GQS showed a mean score of 2.93 out of 5 (SD 0.54), indicating the reliability should be improved, and these articles can only provide limited help to the patients.

CONCLUSIONS

The quality of TMD-related information from WeChat and Zhihu is generally low, although they do well on accuracy. Users of these information should not ignore that the credibility and concreteness still need further improvements. For uploaders, they should pay more attention to the regulations when writing such articles, like attaching a list of reference. As for the platforms, improvements like less advertisement and more supervision will contribute greatly to users’ experience.
On the Narrative Art of Kafka’s The Metamorphosis
Authors: Cong Maoping
Published: August 2023

The Metamorphosis is one of the most famous novels written by Franz Kafka. Through depicting such a bizarre and absurd story as the transformation of the main character Gregor into a beetle, the work reveals the reality that people are eventually alienated under the environment of capitalist society and the great pressure of social life. The Metamorphosis is quite distinctive in its narrative technique, and scholars have done a lot of research on it. This paper tries to analyze the novel from the perspective of narratology and reveal the irreplaceable role of the integration of different narrative techniques in the expression of the characters’ hearts and the dystopian theme of the novel.
Social Transformation through Social Innovation: The Case Study of a Moroccan Waste Recycling Cooperative
Authors: Lahmidi Wiam , Lahmidi Zineb , Boujnouni Soukaina El
Published: August 2023

Faced with the Moroccan economic, social and climatic realities, it is necessary to move towards new models, more adapted to a new dynamic of social transformation. Thus, social innovation appears as a concept linked to social economy, with the aim of meeting social needs through collective action. As such, the cooperative model is the perfect example of a field in which players can work together, collaborate and show solidarity which are essential ingredients for innovation and new solutions to social problems. At this level, the question that arises is how can social innovation contribute to social transformation? We will be focusing on the cooperative structure, as a vehicle for social innovation. With this in mind, the aim of this paper is to highlight, throughout a combination of theorical and empirical work, the role of social actors (as part of the cooperative) in the social transformation of a given territory.
Typology of Rented Houses as a Former of the Sub-Urban Settlement Character
Authors: Salsabilla Salsabilla , Ischak Mohammad , Winandari Ririk , Busnetty Ida
Published: August 2023

The development of the city area of Jakarta is progressing very rapidly, but the land available for residential needs is increasingly limited so that the development of the city is increasingly expanding to suburban areas. This is triggered by the emergence of new cities built by developers that cause natural growth and changes in the spatial character of the original surrounding settlements that already existed before. This study aims to examine the character of settlements around New City. The study uses descriptive qualitative methods through a settlement typomorphology approach with a focus on residential typology. The research findings obtained are that the rental house building becomes the main character of the settlement through the stair element which is the access to the rented room as well as the access separator between the rental housing function and the residential function of the rented house owner.
Analysis on the Relationship between Students' Mental Health and Personality Traits
Authors: Lata Prem , Devi Dr. Treta
Published: August 2023

Emotional steadiness and a positive outlook on life are two components of mental health, which together make up the individual's level of adjustment with themselves, others, and their surroundings. The main aim of the study is Analysis on The Relationship Between Students' Mental Health and Personality Traits. In order to gather data, the investigators initially chose 30 schools to sample from across six different districts in Haryana. There was a significant gender gap in the connection of male and female students' mental health with emotional intelligence and the personality characteristic of extroversion, and this was true for students from both rural and urban environments.
DESIGN AND OPTIMIZATION OF THE VARIABLE-DENSITY LATTICE STRUCTURE BASED ON LOAD PATHS
Authors: Wu Fenghe , Lian Hui , Pei Guobin , Guo Baosu , Wang Zhaohua
Published: August 2023

Lattice structure is more and more widely used in engineering by replacing solid structure. But its mechanical performances are constrained by the external shape if the unit cells are directly filled in the design domain, and the traditional topology optimization methods are difficult to give the explicitly mechanical guidance for the distribution of internal unit cells. In this paper, a novel design and optimization method of variable-density lattice structure is proposed in order to simultaneously optimize the external shape and the internal unit cells. First of all, the envelope model of any given structure should be established, and the load paths need to be visualized by the theory of load path. Then, the design criteria of external shape are established based on the principle of smoother load paths in the structure. An index of load flow capacity is defined to indicate the load paths density and to control the density distribution of unit cells, and a detailed optimization strategy is given. Finally, three examples of a cantilever plate, an L-shaped bracket and a classical three-point bending beam are used to verify the method. The results show that the models designed by the proposed method have better mechanical performances, lower material usage and less printing time.
Study of Phenotype Analysis of Maize Plant: Hyperspectral Image Perspective
Authors: Chavan Neha B. , Manza Dr. Ramesh , Pawar Diksha R.
Published: August 2023

Abstract: Maize, alongside rice and wheat, constitutes a trio of crops responsible for over 50% of the global calorie consumption. To address the rising food demand, enhancing the productivity and stress resilience of these crops becomes imperative. However, the progress of plant breeding initiatives is hindered by the cost and time constraints associated with acquiring plant phenotype data. To overcome these limitations and advance the field, there is a need for datasets that connect new forms of highthroughput phenotype data, gathered from plants, to the performance of identical genotypes in diverse agronomic settings and habitats. These datasets will pave the way for the development of innovative statistical and Machine Learning techniques, empowering researchers to expedite crop improvement efforts effectively.
Seismic Protection of Structures Using Vibration Controlling Devices: A Review
Authors: Gorde Tejas A. , Pajgade P. S.
Published: August 2023

Abstract: Past earthquake record depicts there is a significant increase in human loss, structural as well as economic losses. The current seismic design philosophy for building and infrastructures should be changed from lifesaving to business continuity for modern and resilient societies. Structure should be designed to be quickly restored to full operation with minimal disruption and low cost following a large earthquake. Analysis of this earthquakes show that a large number of existing structure need to be upgrade for their seismic action with new seismic design. This paper attempts the review of different aspects related to seismic design with various vibration controlling devices. Designing philosophy and case studies are discussed in this literature. Summarizing, it gives the total idea of the different literature review and recent research works summary.
Analysis of Parameters Influencing the Performance of Digital Image Encryption using ECC
Authors: Saleem Farhan Ahmed , Mansotra Vibhakar
Published: August 2023

Abstract: Digital images are widely used in various domains, including social media, military, and healthcare. However, the security of digital images is threatened by cyber-attacks and privacy concerns. Cryptography plays a crucial role in ensuring the privacy and integrity of data, including digital images. Encryption methods are employed to protect digital images from unauthorized access. Among these methods, elliptic curve cryptography (ECC) is particularly effective, offering robust security with shorter key lengths. This research paper analysis ECC-based encryption methods for digital image encryption, considering parameters that impact their performance.
Benturan Sosial dan Masalah Pendidikan dalam Novel Guru Aini: Analisis Wacana Kritis
Authors: Rahman Fauzi , Rasyid Yumna , Anwar Miftahulkhairah
Published: August 2023

Melalui analisis wacana model Van Dijk, novel yang merepresentasikan kondisi masyarakat terpencil—khususnya pada aspek pendidikan—seperti novel Guru Aini dapat dibedah berdasarkan teks, kognisi, dan konteks sosial. Pendekatan penelitian yang digunakan adalah kualitatif dengan jenis penelitian analisis wacana kritis model Teun A. Van Dijk. Sumber data penelitian berbentuk kata, frasa, kalimat, dan paragraf yang menggambarkan bagaimana benturan sosial dan masalah pendidikan tergambarkan sebagai kognisi sosial masyarakat dalam novel Guru Aini karya Andrea Hirata. Analisis data dilakukan melalui penelaahan dimensi teks, dimensi kognisi sosial, serta dimensi konteks sosial. Hasil penelitian menunjukkan bahwa pada dimensi teks, novel disusun dengan tema besar tentang pendidikan, tokoh utama yang keras dalam berpendidikan, latar sosial yang tidak mendukung pendidikan, dengan alur progresif melalui sudut pandang pengarang ketiga serba tahu; pada konteks dimensi sosial, masalah yang menjadi sorotan adalah masalah paradigma pendidikan masyarakat, kemiskinan, dan birokrasi yang membelenggu harapan serta cita-cita masyarakat terpencil yang ingin berpendidikan tinggi; pada konteks sosial, pengarang menuliskan keresahan dan fenomena masyarakat di Indonesia yang masih beranggapan bahwa hanya yang berekonomi cukup lah yang layak mendapatkan pendidikan tinggi dan memiliki cita-cita.
High Dimensional Quantum Machine Learning With Small Quantum Computers
Authors: Marshall Simon C. , Gyurik Casper , Dunjko Vedran
Published: August 2023

Quantum computers hold great promise to enhance machine learning, but their current qubit counts restrict the realisation of this promise. To deal with this limitation the community has produced a set of techniques for evaluating large quantum circuits on smaller quantum devices. These techniques work by evaluating many smaller circuits on the smaller machine, that are then combined in a polynomial to replicate the output of the larger machine. This scheme requires more circuit evaluations than are practical for general circuits. However, we investigate the possibility that for certain applications many of these subcircuits are superfluous, and that a much smaller sum is sufficient to estimate the full circuit. We construct a machine learning model that may be capable of approximating the outputs of the larger circuit with much fewer circuit evaluations. We successfully apply our model to the task of digit recognition, using simulated quantum computers much smaller than the data dimension. The model is also applied to the task of approximating a random 10 qubit PQC with simulated access to a 5 qubit computer, even with only relatively modest number of circuits our model provides an accurate approximation of the 10 qubit PQCs output, superior to a neural network attempt. The developed method might be useful for implementing quantum models on larger data throughout the NISQ era.
Guía del buen viajero. La Lindosa: un lugar por descubrir. Chiribiquete: un lugar para conocer sin ir
Authors:   Instituto Colombiano de Antropología e Historia,   Parques Nacionales Naturales de Colombia
Published: August 2023

Chiribiquete: un lugar para conocer sin ir El Parque Nacional Natural de Chiribiquete es un lugar para conocer de una manera que propone una forma distinta de viajar, de ser un “buen viajero” y de visitar lugares que, como esta área protegida, se conservan de manera estricta con el fin de conservar la riqueza natural y cultural que en ellos se encuentran; razón por la cual no tienen vocación turística. En el caso de este Parque Nacional Natural, que es un Sitio Patrimonio de la Humanidad de la Unesco en la categoría de patrimonio mixto, estos valores naturales y culturales se expresan de distintas formas. La Lindosa: un lugar por descubrir La región amazónica cuenta con importantes bienes culturales y naturales que se han posicionado en los circuitos de viajeros y turistas locales, nacionales e internacionales. No obstante, la huella humana que genera el fenómeno turístico ha llevado a diseñar estrategias de salvaguarda, en las que se contempla la protección de ecosistemas vulnerables y bienes arqueológicos, así como la construcción de planes de manejo en interlocución con sistemas de pensamiento de pueblos indígenas sobre sus territorios.
Professor iniciante: os desafios do início da carreira
Authors: Lopes Letícia Almeida , Rhoden Juliana Lima Moreira
Published: August 2023

A discussão acerca da proﬁssão docente não é recente, porém é pertinente que se mantenha em pauta devido às mudanças que ocorrem na sociedade e, consequentemente, no cenário geral da docência. Assim, a pergunta norteadora do presente trabalho é quais são os desaﬁos do início da carreira? O objetivo da pesquisa é compreender os desaﬁos encontrados no início da carreira e reconhecer os movimentos da docência iniciais, tendo em vista que é nesta etapa que ocorre a mudança de papéis, onde o aluno se torna o professor. Metodologicamente, realizou- se uma pesquisa bibliográﬁca respaldada em autores basilares que versam sobre o tema, bem como produções recentes. Nossos estudos fazem entender que os desaﬁos na iniciação à docência implicam em diversos outros, principalmente da vida pessoal e que se entrelaçam com a proﬁssão. Assim como a preparação psicológica e emocional necessárias para tal fase, mas que não são características abordadas o suﬁciente nos cursos de formação de professores, que chegam despreparados para o que enfrentarão ao se inserir na proﬁssão. Portanto, compreendemos que na fase da iniciação da carreira são vários os desaﬁos que o professor iniciante terá de superar e isto torna necessário contínuos movimentos de aprendizagem docente.
المدائح النبوية عند الشاعرين: أحمد شوقي وخليل الله خليلي (دراسة في أوجه التشابه والتباين وإمكانية التأثير والتأثر)
Authors: Fakhry Abdel-Sabour
Published: August 2023

In this article, the researcher discusses the comparison between two renowned poets in the modern Arab literary world, Ahmad Shawqi and Khalilullah Khalili. The researcher provides an overview of Ahmad Shawqi's life translation, literary writings, the key characteristics of his poetry, and its influence in the world of poetry. Additionally, the article delves into the life of the national Afghan poet, Khalilullah Khalili, his writings, the characteristics and purposes of his poetry, while highlighting the similarities between the two poets' personalities. The article explores the central themes around which the poets' works revolve, particularly their sentiments towards the Prophet Muhammad and how they connect this religious occasion to the realities of life. The researcher identifies over ten similarities between the poems of the two poets and also highlights clear differences that exclude the possibility of mutual influence or being influenced, despite their contemporaneity. Finally, the researcher summarizes the most significant findings and comparisons between the two poets in twelve points, evaluating the way they approached their praises of the Prophet in terms of content, emotion, language, and style, while offering some assessments.
Fast 3-D printing of cephalopod beaks utilizing software oriented techniques
Authors: 许 乐乐 , Chen Jiechun , Li Yongqin , Huang Dongmei , Liu Yao , Wang Liyun , Liu Bi
Published: August 2023

The beak which is the feeding organ of cephalopods contains extremely
rich ecological information. To understand its function in different
species the research to the 3-D morphology is essential. In this
article, a full workflow of 3-D model restoration of high-fidelity
cephalopods beak, based on software-oriented techniques, was
established. To begin with, take an upper beak of cuttlefish Sepia
pharaonis for example, a group of isometic view from different
orientations for modeling references could be obtained synchronously, in
few images, with triangular prisms around it. The software Photoshop ©
was applied then to extract the contour of the beak hence to build the
2-D reference gallery. Thirdly, the software ZBrush 2020© was exerted to
create the beaks in 3-D digital form as realistic as possible, based on
reference gallery we built, and printed. These digital-twin models were
compared with their prototype beaks and that of big fin reef squid to
verify their accuracy. The aim of this study was to provide a feasible
method for digital modeling of small organic objects like cephalopod
beak that is accurate, and fast enough to support scientific research
and popular communication.
Mathematical Modeling, Simulation of Reaction, and Regeneration Sections of MTO Process: Review
Authors: garmsirian mahdieh , Fattahi Moslem , Behbahani Reza , Nikou Mohammad Reza Khosravi
Published: August 2023

Light olefins, especially ethylene and propylene, are essential
intermediates in the petrochemical industry, which are used to produce
polyethylene, polypropylene, and other essential products. Olefins can
be produced using different processes and raw materials. The method of
converting methanol to olefins is one of the processes that has received
much attention in recent years. The purpose of this research is to
review the mathematical modeling of the reaction and regenerator
sections, hydrodynamic simulation, heat transfer, and reaction in the
fluidized bed reactor using computational fluid dynamics (CFD), large
eddy simulation (LES), for methanol to olefin process (MTO). It is also
an examination of effective parameters such as reactor length, reactor
flow rate, product distribution, optimal product distribution scenario,
and flow rates in a fluidized bed reactor.
Critical-Constructive Teaching Method and Open Chemistry Instruction
Authors:   Research Institute of Science Education, Jeong Chang Ho , Son Seung Nam
Published: August 2023

Modern society has crisis and uncertain value. It is noted that existing education is insufficient for students to lead safe and human lives in the future society. One of the urgent tasks of our education will be to create an alternative framework of education and teaching that is appropriate for it. In order to keep up with the changes of the times, the teaching and education needs to revise educational purposes and to establish contents that can capture the rapid changes of the times.
This study seeks to find some implications and answers with the critical-constructive teaching concept of Klafki (“Kritisch-Konstruktive Didaktik”) in modern Germany. To this end, the authors first analyzed the concepts and principles of critical-constructive teaching concept of Klafki. In sequence, an example of critical-constructive chemistry class at a high school in the Netherlands is introduced. The authors also described an critical-constructive class that we tried in cooperation with a chemistry teacher at a high school in Korea.
In conclusion, we draws general implications of this study for teachers, who would probably try to apply Klafki’s critical-constructive teaching concept in Korea.
Qualitative Research on a Homeroom Teacher’s Experiencing Conflicts with a Selective Mutism Child
Authors:   Research Institute of Science Education, Oh Youngbeom
Published: August 2023

This paper aims to qualitatively investigate a homeroom teacher’s experiences having conflicts with a selective mutism child in the 5th grade classroom and school settings. As a homeroom teachers, the author collected and analyzed the various qualitative data such as participant observation, interviews, photos and reflective diary. By exploring two individualized educational activities for the participating child, it turned out that there were four kinds of conflicts resulted from the experience with a selective mutism child. The author experienced having 1) confusion between consideration and waiting, 2) conflicts between personalization and individualization, 3) dilemma of teacher identity, and 4) sorrow and pleasure of feeling potentials of her growing up.
Even though the selective mutism child did not give the author any conflicts, she gave the author good conditions that a researcher could be a good teacher. In short, the following four meanings were emerged. First, the author could grasp and deeply understand the inner states of diverse students. Second, he also could realize the necessity of multi-dimensional caring strategies for selective mutism children with early detection and quick prescription. Finally, this research might contribute to understanding the selective mutism children considering school and classroom environments as part of enhancing teacher professionalism.
Validation of the Korean Version of the Occupational Work Ethic Inventory-Short Form
Authors:   Research Institute of Science Education, Park HwaChoon
Published: August 2023

The purpose of this study was to examine the construct validity and the reliability of the Korean version of the Occupational Work Ethic Inventory-Short Form (KOWEI-SF). A total of 1,005 Koreans between the ages of 15 and 64 provided usable data, which were collected by the Korea Research Institute for Vocational Education and Training (KRIVET) in the summer of 2018 to examine contemporary Koreans’ work values and work ethics. The 3-common-factor model of the KOWEI-SF was validated, employing confirmatory factor analyses with model indices and Cronbach’s correlation coefficient alpha. Model fit indices suggested that the KOWEI-SF was a good fit to the data collected: χ2(54, n=171)=354.376, p<.001, TLI=.901, CFI=.912, SRMR=.042. Cronbach’s alpha of each factor was Interpersonal skills=.81, Initiative=.82, and Dependability=.64, respectively. Therefore, it was concluded that the KOWEI-SF was an acceptable model to assess Koreans’ work ethics. Based on the results of the study, implications, limitation, and suggestions for further studies are discussed.
Case Review of Volunteer Teaching Activities using Multimedia based on Cultural Exchanges Applied in Philippine Schools
Authors:   Research Institute of Science Education, Yeon Gyuhyeong , Lee Seungjin , Jun Youngcook
Published: August 2023

This paper reviewed cases where Korean AIV(APEC Internet Volunteer) members taught classes using multimedia tools after they formed a rapport through cultural exchanges in the Philippines. After completing the preparations for hardware and software installation in the computer lab, Korean Internet Volunteer members participated in cultural exchange activities with students through singing and dancing, increasing their immersion while practicing multimedia tools and developing class activities. After learning the computer skills, Filipino students were able to sing or dance to become the protagonists of the video recording content, thereby applying a model of the volunteer group’s activities in which the use of computers had cultural connections among them. Photos, videos, memo and report data were collected and analyzed. In order to supplement qualitative data analysis, interviews were conducted 2-3 times with one Korean teacher who was a member of the volunteer group. The main features of the Korean Internet Volunteer team activities were presented, and a follow-up Korean Volunteers’ activities in 2018 were reviewed as a contrast. Finally, we tried to suggest guidelines that might be applicable to Korean educational practitioners who used to encourage their students to promote creative expressions using multimedia tools in Korean schools and after-school classes.
A Case of NCS Flower Cultivation Course Operation through Integration of Online-based Class-Evaluation-Record
Authors:   Research Institute of Science Education, Park Byung Chul
Published: August 2023

The purpose of this study is to present a class model using an online platform in a chaotic situation at school sites as non-face-to-face classes due to the infectious disease (COVID-19) for second-year students of specialized agricultural high schools. In this study, the online lesson design direction was set through the learners’ prior analysis of distance learning subjects from the opening of the online platform. Based on the instructional design direction such as one-way and two-way, we tried to share the method with the field teachers in the front line of the whole process from online student evaluation to writing the life record after the evaluation. Through this study, supplementary points and implications that can be applied to the same subject group and other subject groups were presented. In other words, in the important part of the practice of specialized high schools, the process from the distance learning method using the practice package and the fair performance evaluation using the e-study to the recording of the life record will be explained. It is expected that it will be used as an opportunity to share various information about non-face-to-face classes in specialized agricultural high schools based on the results of the school field research on the method for the unification of class-evaluation-record using the online platform.
Gradient Ricci-Yamabe solitons on warped product manifolds
Authors: Karaca Fatma
Published: August 2023

We give the necessary and sufficient conditions for a gradient Ricci-Yamabe
soliton with warped product metric. As physical applications, we consider
gradient Ricci-Yamabe solitons on generalized Robertson-Walker space-times
and standard static space-times.
F−geodesics on the second order tangent bundle over a Riemannian manifold
Authors: Djaa Nour , Gezer Aydin , Karaca Kubra
Published: August 2023

Let (M,1) be a Riemannian manifold and T2M be its second order tangent
bundle. In this paper, we deal with certain characterizations of F?geodesics
(which generalize both classical geodesics and magnetic curves) on the
second order tangent bundle T2M and the hypersurface T21,1M with respect to
some natural metrics.
Simple model for the laser powder interaction during direct metal deposition
Authors: Chan C. L.
Published: August 2023

In this paper, a simple model is presented for simulating laser and powder interaction during a coaxial laser cladding process, which is a very important part of direct metal deposition. The powder is delivered coaxially with the laser. The idea is to completely melt the powder before it hits the substrate. The laser is being attenuated as it propagates through the cloud of powders. The laser beam that penetrated through the cloud is used to melt the substrate. The track of 3D printing is formed by resolidification as the laser or the substrate scans. The laser attenuation is modeled by the Beer–Lambert law. The heat transfer within each powder is modeled by a lumped capacitance method. We use an enthalpy formulation to easily model and track the melting. The resulting 1D differential equation is solved numerically using Euler's method. The enthalpy and temperature plot is presented. We make use this model to determine the standoff distance. The effects of powder velocity, laser power, powder number density, and powder radius on the standoff distance are investigated and presented.
Diversity and Community Structure of Butterly in Teijsmann and Soedjana Kassan Park, Bogor Botanical Garden
Authors: Rizkawati Vina , Asmara Yustika Tri , Khairiyyah Anisah , Perdani Nindyra Karimah , Fitriasari Sheryl , Savira Ananda Nuri , Pasaribu Pinta Omas , Asharo Rizal Koen , Priambodo Rizky
Published: August 2023

As a megadiversity country, Indonesia is home to a large number of flora and fauna, one of which is the butterfly. The Bogor Botanical Garden, situated at the center of Bogor City, not only serves as a green open space but also as a conservation area for plants and animals composed in it.  This study aimed to assess the diversity of butterfly species in Teijsmann Park and Soedjana Kassan Park, Bogor Botanical Garden through inventory and identification.  Sampling was carried out at spots that were 100 meters apart from each other on a walked-line transect defined at the two parks. The diversity parameters assessed and analyzed are relative abundance, relative frequency, Shannon-Wiener (H’) diversity index, Evenness index (E), and dominance.  In a total of 202 sample individuals, there were identified 38 species of butterflies belonging to 5 families namely Papilionidae, Pieridae, Nymphalidae, Lycaenidae, and Hesperiidae. The highest abundance found in Teijsmann Park is Ypthima philomela from the Nymphalidae family and Zizina otis from the Lycaenidae family. Species with the highest frequency are Junonia hedonia and Ypthima philomela from the Nymphalidae family. On the other hand, the highest frequency and abundance found in Soedjana Kassan Park was Leptosia nina from the Pieridae family. Teijsmann Park showed a slightly higher value of diversity and evenness indexes (H'=2.62, E=0.84) when compared to Soedjana Kassan Park (H'=2.50, E=0.76).
Species Diversity and Cave-Bat Conservation Efforts in Aoma Village, Wolasi District -Southeast Sulawesi
Authors: Amirullah Amirullah , Bakkareng Sitti Wirdhana Ahmad , Risnaldi La Ode Fabir
Published: August 2023

Indonesia a tropical country that remains warm all year, has the largest biodiversity. This study aims to determine the diversity of bats of the order Microchiroptera in Rau Cave, Wolasi, Conservation (Protected) Forest area, around Aoma Village, South Konawe Regency. Data collection was carried out using a mist net measuring 6 x 2 meters which were stretched in front of the mouth of the cave at 16.00 before the bats came out looking for food and harvested at 06.00-0.700. The trapped bats were identified using the Sulawesi Bat and its role in the health sector, and other relevant references. The results showed that there were 26 trapped bats consisting of  5 species, namely Rhinolopus arcuatus (Prok Bruk Sulawesi), Hipposideros ater (Barong gauld), Dobsonia viridis (Kubu Hijau), Miniopterus australis (Tomosu australi) and Hipposideros dinops (Barong horsfield). The species found consisted of 2 families, namely the families Rhinolopidae and Hipposideridae, and consisted of 2 genera, namely the genera of Dobsonia and Miniopterus. The diversity index shows a value (H') = 0.986, which indicates a low category in diversity and a Margalef wealth index (R) of 0.26. It is necessary to conserve plant species both for eating insects and for food sources for Microchiroptera bats in their feeding ground
Sosialisasi Penggunaan Social Media untuk Menambah Penghasilan bagi Ibu-Ibu PKK di Desa Lubuk Puar, Bengkulu Tengah
Authors: Sumitha Salsa Billha , Saniya Tika , Herawati Helmi
Published: August 2023

Digital media has now become an important medium used in every community. Digital media has become a modern lifestyle, in addition, the use of digital media has helped everyone in doing routines. Individuals, organizations, and even governments are never separated from activities using digital media. The objectives to be achieved from this activity are: to help PKK women in the Lubuk Puar village use social media and the internet wisely, so as to support the creation of a healthy internet in the community; Introducing  Prof. Dr. Hazairin, SH University further to residents in the Prof. Dr. Hazairin SH University environment. The benefits of this activity are: PKK mothers at the Lubuk Puar sub-district can be more careful in using the internet and can use it effectively and efficiently and can be used to monitor the use of the internet in their children.
Pelatihan Kewirausahan melalui Strategi Marketing Mix di Desa Kedawung Sragen
Authors: Rizkiawan Ilham Karin , Fahman Fahman Hadi , Hermansyah Doni
Published: August 2023

Pada pengabdian ini saya akan mengedukasi tentang strategi marketing mix yang tidak hanya membahas harga tetapi juga  strategi ini merupakan perpaduan dari faktor-faktor penting yang ada di dalam pasar itu sendiri.  Maka dari itu perlu faktor faktor marketing mix dalam memasarkan sudah berkembang terbagi menjadi product (produk), price (harga), promotion (promosi), place (tempat), people (orang),process (proses),dan physical evidence (fasilitas fisik). Ketujuh faktor ini wajib diperhatikan dalam menyusun strategi pemasaran. Untuk itulah rangakaian program pengabdian kepada masyarakat ini dilakukan untuk mengedukasi  UMKM di Desa Kedawung,Sragen dalam melakukan penjualan dengan strategi marketing mix. Mitra dalam kegiatan ini adalah anggota UMKM Desa Kedawung, Sragen. Anggota pelatihan sejumlah 30 orang dan pengelola usaha juga relatif masih muda berumur 23-35 tahun. Usaha yang dijalankan rata-rata bergerak dibidang kuliner dan fashion. Umur usaha rata-rata antara 8 bulan - 2 tahun
Penguatan Tata Kelola Bank Sampah Hatim Berseri sebagai Wujud Usaha Mikro Kecil dan Menengah (UMKM)
Authors: Handayani Etik Puji , Kurniawati Nurleni , Ariska Feby Musti
Published: August 2023

Bank Sampah Hatim Berseri merupakan salah satu Bank Sampah Unit (BSU) yang ada di Kota Metro. Bank sampah ini belum memiliki tata Kelola yang baik, seperti belum adanya model pengembangan bisnis dan media promosi dan pemasaran yang mendukung. Tujuan dari kegiatan pengabdian ini adalah untuk memberikan pendampingan dalam rangka penguatan tata Kelola yang akan berdampak dalam peningkatan kesadaran dan pemahaman bagi masyarakat serta meningkatkan kinerja pengelolaan bank sampah. Metode pengabdian dilakukan dengan cara sosialisasi dan diskusi penguatan tata kelola bank sampah. Tim pengabdian terdiri dari dosen dan mahasiswa. Kegiatan dilaksanakan pada tanggal 22 Juni 2023. Lokasi kegiatan di Kelurahan Hadimulyo Timur Kecamatan Metro Pusat Kota Metro. Hasil dari kegiatan pengabdian ini berupa penguatan tata kelola pengembangan model bisnis mencakup penyusunan laporan keuangan yang baik, pencatatan yang akurat, pengelolaan dana yang tepat, dan pelaporan yang jelas. Melalui pendampingan, Pengurus Bank sampah juga akan mendapat informasi dan edukasi tentang manfaat dan pentingnya tata kelola pemasaran. Kegiatan ini meliputi pembuatan brosur, dan media sosial guna mengkampanyekan program dan produk Bank sampah sebagai UMKM ke masyarakat yang lebih luas.
Accelerating Employee Performance through Management by Objectives: Evidence from Manufacturing Firms
Authors: Okoli Ifeanyi Emmanuel Nuel , Ewah Evelyn Ayamba Bassey , Chukwu Christian Uchenna
Published: August 2023

This study explore ways of accelerating employee performance through management by objective among workers in manufacturing firms in Anambra State Nigeria. Three specific objectives research questions and hypotheses were formulated with the decomposed variables of the study. This study used a survey research design. The study population was three hundred and thirty-three (333) workers whereas the sample size was one hundred and eight two (182) arrived at using Taro Yamane formula. Data were composed using a self-administered questionnaire from the sample size of workers. The simple random sampling system was applied for the study. Pearson correlation coefficient and simple linear regression were applied for hypotheses testing. In the first hypothesis, the study found that participation exerts moderate influence on employee retention among workers in manufacturing firms (β=0.65, t=10.36, r2=0.424, F=107.272, p<0.01). Secondly, the test hypothesis found that there is a significant positive correlation connecting goal setting as well as employee job satisfaction among workers in manufacturing firms (r=0.859, n=148, p<0.01). In the third hypothesis, the study found that feedback exerts moderate statistical influence on employee commitment among workers in manufacturing firms (β=0.76, t=14.24, r2=0.581, F=202.815, p<0.01). The study concludes that for manufacturing firms to increase employee performance, setting and managing objectives is imperative. The research recommended that management needs to slot in employees in its actions so as to dissuade them from leaving the firm. The study also advocated that management needs to incorporate employee contributions when setting the firm’s goals to boost employee confidence and achieve job satisfaction.