bluuebunny/crossref_metadata_2025 huggingface dataset:
TEACHER RECRUITMENT, SELECTION , AND PROMOTION: THE ROLE OF TEACHERS’ UNIONS IN MALAYSIA
Authors: Syed Husin Syed Muhamad Ubaidillah
Published: July 2023

The  topic  reviews the roles of  Teachers’ Unions  in  teacher  recruitment,  selection, and promotion and their impacts on the timely graduate teachers  as well as to the educational system in general. The objectives of the research were to analyze the current situation in the Malaysia’s  Ministry of Education from the Human Resource Management (HRM) point of view. It  outlines the issues  that exist within HRM particularly  on  the  influence of teachers’ Unions in  the formation of Human Resource policy in education on teachers’  recruitment channel , selection methods and promotion and its effects on the timely  graduate teachers.  Special reference was given to the latest Malaysia’s educational policy - Malaysian  National Education Blueprint (2013-2025) which  inter alia has  included  human resource management in its transformation program.  We argue that Teachers’ Unions have their influence in the  formation of   policy  by the Ministry of  Education on recruitment, selection and promotion of  teachers.  How the  policy benefits the college-qualified teachers and affect the timely  graduate teachers in particular and the educational system in general.
THE ORANG ASLI IN MALAYSIAN FORMAL EDUCATION: ORANG ASLI TEACHERS’ SENTIMENTS AND OBSERVATIONS
Authors: Mohd Salim Mohamad Safwat Ashahri , Mohd Adnan Airil Haimi , Mohamad Shah Dianna Suzieanna , Mohd Tahir Mohd Haniff , Yusof Ahmad Muhyiddin
Published: July 2023

Stories of native peoples being disenfranchised from modern life and being disadvantaged within different social spheres from the realm of formal education to the world of work are nothing new. Even in developed nations, some native peoples find it hard to adjust to the lifestyles of the majority population, what more within developing countries where the sense of social justice is low and native peoples are left to fend for themselves in the name of development and modernity. Centring on the Orang Asli population of Malaysia, this qualitative research was carried out to map the field before a large-scale academic inquiry is executed at the Royal Belum State Park in the state of Perak, Malaysia for the following two years. Four Orang Asli teachers in the state of Perak were individually interviewed to collect ‘thick’ qualitative data regarding the current state of the Orang Asli population in formal education (i.e., in primary and secondary schools). This research is very much interested in three core subject matters. Firstly, how formal education and the process of schooling play a part in the lives of Orang Asli children and teenagers. Secondly, what should teachers and other educators do to ensure that Orang Asli children and teenagers benefit as much as they could from their primary and secondary schooling. And finally, where is the place of non-formal or informal education within the lifespan development of Orang Asli children and teenagers, as they face increasing challenges to maintain their traditional way of life and living.
KEPERLUAN MODUL LATIHAN PENGUKUHAN KEPULIHAN TERHADAP (ORANG KENA PENGAWASAN- OKP) BERBANTUKAN LATIHAN PSIKOSPIRITUAL DAN BIOFEEDBACK
Authors: Azmi Mohd Hefzan , Abdul Wahab Muhammad Nubli
Published: July 2023

OKP under section 6(1)(a) are those who have undergone treatment and rehabilitation at the Cure and Care Rehabilitation Center (CCRC). After being released from the institution, they are required to undergo supervision in their respective districts for a period of not less than two years. Among the main challenges faced by this group is the risk of repeated addiction (relapse) after being freed from the institution. In an effort to prevent this relapse, they need to go through activities that are considered capable of strengthening recovery and apply activities based on Islamic psychospirituality so that this target group receive spiritual fullfillment and to continue to be resilient from withdrawal symptoms and navigate triggers while in the supervision phase. Following on from that, this paper continues to analyze several past studies related to the psychospiritual approach of Islam in an effort to curb this relapse. By using the literature research method through the systematic literature review (SLR) technique, this paper finds the need for treatment and training based on Islamic psychospirituality from al-Nafs al-Ghazali's riyadah model. Therefore, the result of a paper like this is expected to be able to construct a standardized module that can guide OKP towards strengthening recovery throughout life.
 
OKP dibawah seksyen 6(1)(a) adalah mereka yang telah menjalani rawatan dan pemulihan di Pusat Pemulihan Penagihan Narkotik (PUSPEN). Setelah dibebaskan dari institusi tersebut mereka ini dikehendaki menjalani pengawasan di daerah masing-masing bagi tempoh tidak kurang dua tahun. Antara cabaran utama yang dihadapi oleh golongan ini ialah risiko penagihan berulang (relaps) setelah bebas dari institusi. Dalam usaha mencegah relaps ini mereka perlu melalui aktiviti-aktiviti yang dianggap mampu mengukuhkan kepulihan dan diaplikasikan aktiviti berasaskan psikospiritual Islam agar golongan sasaran ini mendapat pengisian jiwa dan tidak terus alpa semasa berada di fasa pengawasan. Rentetan dari itu makalah ini terus menganalisis beberapa kajian lepas berkaitan dengan pendekatan psikospiritual Islam dalam usaha membendung relaps ini. Dengan menggunakan metod kajian kepustakaan melalui teknik systematic literature review (SLR) maka makalah ini mendapati perlunya terhadap rawatan dan latihan berasaskan psikospiritual Islam dari model riyadah al-Nafs al-Ghazali. Justeru itu hasil dari makalah seperti ini diharapkan mampu diwujudkan sukatan modul yang mampu membimbing OKP ke arah pengukuhan kepulihan sepanjang hayat.
MASALAH PEMBELAJARAN MURID SEKOLAH RENDAH LUAR BANDAR DALAM MATA PELAJARAN SAINS
Authors: Hasmiza Yaakob  , Muhammad Nubli Abdul Wahab  , Abdul Rashid Abdul Aziz  , Mohd Ropizam Mohamad Zainun
Published: July 2023

Penguasaan mata pelajaran Sains amat penting dalam kalangan murid sekolah rendah. Namun begitu, pencapaian murid dalam mata pelajaran Sains dilihat agak merosot semenjak Kurikulum Standard Sekolah Rendah (KSSR) diperkenalkan pada tahun 2016.   Pelbagai pendekatan dilakukan untuk meningkatkan penguasaan murid dalam mata pelajaran ini. Sehubungan dengan itu, kajian ini dilaksanakan bagi mengkaji masalah yang dihadapi oleh murid-murid sekolah luar bandar dalam mempelajari mata pelajaran Sains. Kajian menggunakan borang soal selidik kepada 98 orang murid tahun 6 yang bersekolah di sekitar Zon Jengka. Pencapaian akademik mereka pula diukur berdasarkan jumlah markah peperiksaan (TOV) murid bagi penilaian akhir tahun serta target murid untuk pencapaian Sains. Dapatan kajian menunjukkan bahawa masalah utama yang dihadapi oleh murid-murid sekolah rendah luar bandar terhadap mata pelajaran Sains adalah masalah sikap negatif terhadap mata pelajaran Sains. Sampel juga sukar untuk memahami topik-topik yang dipelajari. Sampel juga menghadapi masalah dalam mengaplikasikan dapatan uji kaji dengan kehidupan seharian. Situasi ini memberikan kesan terhadap penguasaan dan daya tumpuan murid di dalam kelas dan seterusnya mempengaruhi motivasi murid terhadap mata pelajaran Sains. Hasil dari kajian ini diharapkan dapat membantu para pendidik membuat perancangan yang lebih terperinci dalam mempelbagaikan pendekatan untuk meningkatkan tumpuan murid terhadap mata pelajaran Sains dan seterusnya membantu meningkatkan kecemerlangan mata pelajaran Sains.

Science subject achievement is crucial for elementary school students. However, the achievement of students in Science subjects has seen to decline since the introduction of the Primary School Standard Curriculum in 2016. Various strategies are employed to enhance student performance of this subject. In light of this, this study was conducted to examine the challenges rural school students face when learning Science subjects. The study administered a questionnaire to 98 sixth-grade students from schools in the Jengka Zone. Academic achievement is determined by the student's total exam score (TOV) on the end-of-year examination and the student's Science achievement goal. The findings of the study indicate that negative attitudes towards Science subjects are the most significant challenge faced by primary school students. Additionally, samples are also difficult to fully understand the science topics. Samples also struggle to apply the experiment's findings to everyday life. This circumstance has an effect on students' classroom performance and concentration, as well as their interest in Science subjects. The findings of this study are anticipated to assist educators in developing specific strategies for diversifying approaches to increase students' focus on Science subjects and to contribute to the enhancement of Science subject excellence.
INFLUENCE OF HUMAN RESOURCE MANAGEMENT PRACTICES ON LECTURERS’ JOB PRODUCTIVITY IN UNIVERSITIES OF LAGOS AND OGUN STATES
Authors: Osisami R. Adenike
Published: July 2023

The problem of lecturers’ job productivity is a long-standing one, with the outcome of this seen in the product of the university not measuring up to the employer’s standard. The study investigated the influence of some human resource management practices on the lecturers’ job productivity in Universities in Lagos and Ogun states. The research adopted a descriptive research design on a population of four thousand three hundred and ninety-two (4,392) of which nine hundred and thirty-five (935) lecturers were selected from lecturers in Federal, state, and private Universities in Lagos and Ogun States. Four instruments were revalidated and adapted for this study. The result revealed that the human resource management variables of participatory management, performance appraisal, and organizational commitment made no significant joint contribution to Federal university (F3,310= 2.519; p>.05), State University (F3,343= 0.361; p>.05) and Private University (F3,282= 0.369;p>.05) lecturers’ job productivity. Based on the findings, other human resource management practices could be investigated as influencing lecturers’ job productivity. The research recommended that the university management should improve their welfare packages to enhance lecturers’ job productivity.
Theoretical Principles of Motivation Management in the Territorial Community
Authors: Boryshkevych Iryna , Yakubiv Valentyna
Published: July 2023

The importance of employee motivation in a territorial community lies in its impact on their productivity, efficiency, and engagement in community development. Motivated employees demonstrate greater initiative, creativity, and collaboration skills, which contribute to achieving community goals and solving its problems. Moreover, motivation helps retain talented individuals, increases job satisfaction, and creates a positive work atmosphere that fosters cooperation and community development as a whole. The article explores the historical origins of the term “motivation” and its main stages of evolution. It examines interpretations of the concept of motivation by both domestic and foreign scholars and proposes its own definition. Motivation is understood as “the main management function that consists of a set of specific motives that drive employees to more productive and efficient work in order to achieve their own goals and the goals of the organization, as well as to apply employees' professional potential in a strategic period”. The dynamics of the number of scientific publications in the Scopus database on motivation research over the past 10 years, including by Ukrainian scientists, are analyzed. The search results show an increasing interest of researchers in studying the concept of motivation, with a total of 13,072 works in 2022. The main stages of the employee motivation process are considered. This process includes six main stages: the emergence of a need, seeking ways to satisfy the need, setting goals and directions of action, implementation of specific actions, receiving rewards for actions performed, and satisfaction of the need. A comparative characteristic of the terms “motivation” and “stimulation” is provided based on the following comparison criteria: scope of application, duration of action, stimulating measures, relation to work, organizational form, and overall goals. A well-developed motivation system that combines both material and non-material incentives ensures improved productivity, as motivated employees are more inclined to high-quality and productive work. By improving motivational management, a community can stimulate employees to achieve better results in their duties and attract and retain talented personnel, as competition for talented specialists becomes increasingly intense.
Prevalence of Electronic Hookah and Risk Factors among University Students in Mosul City/Iraq
Authors: Younis Nasir Muwfaq
Published: July 2023

Tobacco use is considered as one of the largest public health threats facing the world. The estimated number of current smokers in the world epidemic now in the developing countries. Waterpipe smoking is a customary and cultural method of tobacco smoking in many parts of the world. The aim of the study to assess the Prevalence of electronic Hookah and risk factors among university students in Mosul City . A descriptive cross-sectional study that conducted during the period of 1 /12/ 2022 to 1 /3/ 2023 among university of students  in Nineveh Governorate. The data collected in four college  included in the study (Engineering, Sciences, Medicine and Education Colleges). The instruments of the study were composed of (3) parts:Part One: Demographic characteristics that include (ages, gender, Marital status, educational level, exercise and Smoking).Part Two: To assess Practice patterns among electronic hookah users. Part Three: To assess risk factors for university students towards electronic hookah.This study finding that most of the sample participating in the study amounted to 400 students, that most of the study sample was from 18 to 20 years old, at a rate of 54.25%, and that the sample of men was higher than that of women by (54.25%), 79%of the sample whose marital status was single. This study concluded that almost half of the university students were users of electronic hookah, and most students used electronic hookah smoking in the colleges of the engineering group, and many students had sufficient information about the risk factors related to electronic smoking.
An Interventional Program on Nurses Knowledge and Practice towards Phototherapy in Neonatal Care Units
Authors: Bura'a Laith Nawfal , Younis Nasir Muwfaq
Published: July 2023

The aim of the study an interventional Program on nurses knowledge and Practice towards Phototherapy in neonatal care units. Quazi experimental design through using non randomized Purposive Sampling ( Non probability ) controlled trial is conducted to determine effectiveness of an interventional program on nurses performance  regarding phototherapy from first. Dece-2022 to Jun2023. A non-randomized Purposive Sampling ( Non probability ) of nurses for the two group with different position. The sample was collected for the study group in Mosul neonatal care units that they was  )60 ) nurse who are works  on phototherapy in neonatal care units, who’s  agree to participate in the study, purposive sampling  by choosing ( 30 ) nurses. The finding results  refer to (pre-test =73.34% poor) , (post-test1=83.34% Good) and (post-test2=80 Good) in Knowledge.The study concluded that the research confirms that the training is an excellent method for enhancing nurses' knowledge and practice of phototherapy neonatal.
Efficacy of trans theoretical Model Intervention for Improving Behaviors related to Electronic Hookah Smoking among Healthcare Workers in Mosul Hospital: A Randomized Control Trail
Authors: Younis Nasir Muwfaq , Taher Ahmed K. Mohamed
Published: July 2023

The most common preventable cause of mortality and sickness in the world is tobacco usage, due to an improved understanding of the health dangers associated with smoking, indoor smoking prohibitions, restrictions on media and advertising and increasing public awareness, the rate of cigarette smoking has dropped in the United States over the past 45 years, However, these effective initiatives are threatened by the increased usage of other tobacco products like hookah.To determine the efficacy of trans theoretical model intervention for improving behaviors related to electronic Hookah smoking among healthcare workers in Mosul hospital. A simple random sample with probability of 56 males and 2 females health care workers (HCW) for the two group with different position. The sample was collected for the study group in Mosul General hospital that they were 58 HCW who they are electronic hookah smokers/ 29 HCW who agree to participate in the study and the others has refused participation. the data are being collected in the beginning of October 2022. through the use of the study instrument and finishing in May 2023. Data is analyzed using the "Statistical Package for Social Science (SPSS) software for Windows (Version 26)".This finding the explain the mean difference for pre-test, post-test 1 and post-test 2 that there is marked change in mean about (0.6 to1.10) in study group while there is no noticeable change in mean in control group.This study concluded that the health intervention for behavior change through Transtheoretical Model demonstrates the importance of Electronic hookah smoking cessation and has a positive impact on health care workers perceptions of Stage of change, process of change, decisional-balance and self-efficacy/temptation.
Epidemiology of Hepatitis B-virus in Nineveh province: Retrospective Study
Authors: Younis Nasir Muwfaq
Published: July 2023

The purpose of the study was to determine the incidence and epidemiology of the ten-year hepatitis B virus type (2011-2020).The province of Nineveh's hepatitis (B) prevalence was calculated using a retrospective analysis. The study's time frame is (2011 2020). The data collection mechanism was adopted by the Nineveh Health Department, the public sector, the Communicable Diseases Unit, through the records in the unit, for a period of ten years, from 2011 to 2020.The age, sex, residence and occupation of the infected were determined, and those infected with hepatitis B virus. For the analysis of the data "frequency, percentage" descriptive and inferential statistical methods were used.The study's findings revealed that the proportion of men was approximately (70.892%) larger than that of women, and that the age range with the highest viral hepatitis infection rates was between (1-60) and by (34.978%). The average age was (52.2+2.65).This study concluded that the infection rate among the elderly was much higher than that of children and adults. The reason is that elderly people have much lower immunity than adults, so they are more susceptible.
Model of Revitalization of Local Wisdom Maja Labo Dahu in Saving the Environment in Bima Regency
Authors: . Furkan , Syah Ahman , . Sunaryo
Published: July 2023

This research was studied from the problem of massive forest destruction occurring in Bima Regency even though there is a local wisdom Maja Labo Dahu. This research uses  an ethnographic approach, which focuses on experiences, understanding, perspectives and current conditions in the Bima community. This study explains the model of reviltalization of Maja Labo Dahu's local wisdom in environmental protection in Bima Regency. This research data was collected through in-depth observation or observation, documentation and direct interviews of several speakers, including government, traditional leaders, community leaders, religions, community members, journalists, corn entrepreneurs, wood, and academics. The results showed that serious steps are needed to revitalize local wisdom, Maja Labo Dohu as an effort to save the environment. Efforts that can be made, namely (1) Strengthening the Social Forestry Program by Utilizing Intercropping Plants, (2) The Parafu Concept in Several Places Must Be Maintained, (3) Reviving Customary Institutions in Efforts to Revitalize Forest Damage, (4) Strengthening Forest Supervision through Customary Institutions, and (5) Moratorium/Cessation of Cultivation and Clearing of Forests Around Springs.
Implementation of the Merdeka Belajar Program in Improving Teacher Performance and the Quality of Educational Services
Authors: Taridala Sulastri , . Samdin , Sukotjo Endro , Rahmaniar Sitti
Published: July 2023

The aim of this research is to analyze the Merdeka Belajar program's implementation in SMA Negeri 4 Konawe Selatan, which includes an examination of the program's components, teacher effectiveness, educational service standards, and the Merdeka Belajar Model. This project employs case study research methods. The results of the studies included minimizing school curricula, replacing the National School Standardization Exam with a Minimum Competency Assessment, and using a zoning system to accommodate new students. The Teacher Ability Assessment Tool (APKG) was developed to collect data on teacher performance, and it has positive results for APKG 1 and APKG 2. The standard of educational services was assessed applying a questionnaire, and results varied from 93% to 97%. Overall, the Merdeka Belajar project at SMA Negeri 4 Konawe Selatan were having positive results in areas like quality of education and student outcomes.
Path Model: Effect of Knowledge, Personality and Behavior Intentions toward Climate Change Adaptive Behavior
Authors: Tarmana Dede , . Nadiroh , Purwanto Agung
Published: July 2023

This study was aimed at modelling of climate change adaptive behaviour from basic model theory Responsible Environmental Behaviour (REB) by Hines, and to know the effect of knowledge about climate change (CC), personality, behavior intention toward CC adaptive behavior. A survey method was used by involving 481 Cadets at The School of Meteorology Climatology and Geophysics (STMKG) as sample in this study. There were 4 instruments in this research for measuring knowledge about CC (24 items, reliability .923), personality (25 items, reliability .933), behavior intention (34 items, reliability .976) and CC adaptive behavior of cadets (24 items, reliability .964). Data was analyzed by descriptive statistical, path modelling analysis and inferential statistics. The results revealed that path model at CC adaptive behavior have the significant suitability model. CC adaptive behavior significantly direct and indirect affected knowledge about CC, personality, and behaviour intention, but unaffected indirectly by knowledge about CC. Based on those findings, it can be concluded that variations in CC adaptive behavior of STMKG cadets are affected by variations in knowledge about CC, personality, and behaviour intention. It means that Path model can used to predict CC adaptive behavior based on knowledge about CC, personality, and behavior intention.
Mapping the Path to Sustainable Education: Critical Dimensions of Locally–Established Higher Education Institutions
Authors: Arnado Alvic A.
Published: July 2023

This study examines critical dimensions of higher education and their performance in locally-established higher education institutions (HEIs). The research findings indicate that administration, mission, and planning are the highest-performing dimensions, followed by operations and student opportunities. However, curriculum, faculty and staff development and rewards, research and scholarship, and outreach and service demonstrate regular performance. The qualitative analysis reveals several important conclusions. Firstly, the Vision, Mission, Goals, and Objectives (VMGO) of the HEIs align with sustainability commitments. Secondly, these institutions prioritize employee involvement in decision-making, provide appropriate status and benefits, and shape academic disciplines based on core values, showing engagement with social and ecological systems. Thirdly, only a small percentage of faculty members focus on teaching or researching sustainability issues. Additionally, participants acknowledge a significant gap between their institutions and ideal campus models practiced by established universities in the country. These universities actively support the government's clean and green program through projects and research. The adoption of the Strategic Performance Monitoring System (SPMS) and budget appropriations for faculty development programs are noted. Locally-established HEIs contribute to sustainable community development through partnerships with schools, local governments, and businesses. Participants engage in sustainability-related training and conferences. The institutions have dedicated offices for linkages and placement and conduct outreach programs in specific communities. Students actively participate through student councils, Go Green Project Teams, and college clubs. This research sheds light on the performance and commitment of locally established HEIs toward sustainability and highlights areas for improvement to align with the practices of established universities.
Technology-Driven Education: Analyzing the Synergy among Innovation, Motivation, and Student Engagement
Authors: Alegre Emybel M.
Published: July 2023

This quantitative research study aimed to investigate the relationship between classroom technology integration, student engagement, and motivation. The study had multiple objectives, including identifying the technologies currently used in the classroom, assessing student engagement and motivation in using technology for learning, exploring students' perceptions of promoting technology innovation, examining the relationship between engagement, motivation, and perception, and proposing an intervention program to enhance technology use in the classroom. To achieve these objectives, a survey questionnaire was administered to collect data from students regarding their perceptions of technology use, engagement levels, and motivation. The collected data were analyzed using descriptive statistics and correlation analysis. The study revealed a significant positive correlation between classroom technology integration and student engagement and motivation. Students exhibited positive attitudes towards technology use, recognizing its impact on their knowledge, skills, and confidence. The results identified the value of innovation in the classroom and the necessity of continued professional development to promote successful technology integration. The study recommended an intervention program to support and encourage teachers to use technology in the classroom effectively. Overall, this study adds to our knowledge of the connection between technology, student engagement, and motivation. This highlights the advantages of incorporating technology into the classroom and the importance of ongoing professional development for teachers. Through the proper integration of technology, educators can improve the learning outcomes for students by using the information gathered from this study to create engaging learning environments.
The Impact of Social Media Influencers on BA students: A Study Targeting a Sample Chosen from the Students Enrolled at the University of Jordan: Snapchat as a Model
Authors: Atieh Nesreen Nabil Rawhe , Salahat Abeer Ali Al- , Arabi Rakan Ayoub Abu
Published: July 2023

The present study aimed to explore the impact of social media influencers on the BA students enrolled at the University of Jordan from the perspective of those students. It targets Snapchat as a model. It targets the behavioral and language-related areas.  The researcher of the present study adopted a descriptive approach. She developed a questionnaire for meeting the study’s goal.  This questionnaire consists from twenty two (22) items. It targets two areas. The first area is represented in the impact of social media influencers on students in language-related aspects. The second area is represented in the impact of social media influencers on students in behavioral aspects. The study’s population is represented in all the female and male BA students who were enrolled at the humanities and scientific faculties at the University of Jordan during the second semester of the academic year 2023 / 2024. It consists from 46114 students. Data was collected online from a random sample consisting from 269 students.  It was found that the extent of impact of social media influencers on the BA students in language-related aspects is moderate. It was found that the extent of impact of social media influencers on the BA students in behavioral aspects is low.  There isn’t any significant difference between the respondents ‘attitudes which can be attributed to (gender, faculty, academic year, or number of hours spent on using Snapchat) in the language-related aspects. There isn’t any significant difference between the respondents ‘attitudes which can be attributed to (gender, faculty, or academic year) in the behavioral aspects. There is a statistically statistically significant difference – at the statistical significance level of (a = 0.05)- between the respondents ‘attitudes which can be attributed to the number of hours spent on using Snapchat in the behavioral aspects.  The latter difference is for the favor of the ones who spent three hours or more. The researcher of the present study offered several recommendations. For instance, she recommends conducting studies to explore the impact of social media on the behavior of adolescents and youth. She recommends using the results of such studies to set strategic plans and developing programs targeting youth.
Effectiveness of Using Traditional Plants on Antibiotic Residues and Egg Quality of Laying Hens
Authors: . Mihrani , Faradila Soraya , Sara Urfiana , Suryani Lili , . Nurhayati
Published: July 2023

To get quality eggs, breeders can try traditional ingredients as an alternative to caring for chickens. Because traditional plants are also considered to have efficacy as antibiotics. In getting positive results, it is necessary to test plant species that are in accordance with the standards of chicken needs. In this case, it has been determined through the feasibility of herbal medicines such as herbs and papaya leaves as Antibiotic Residues and improving egg quality. The results showed that the addition of papaya leaf extract in drinking water (P2) could increase the thickness of the shell, the addition of papaya leaf extract in combination with herbal medicine (P3) could increase the value of the egg yolk colour index, and there was a tendency to increase the colour of the shell in the P2 and P3 treatments. In addition, there were no antibiotic residues in chicken eggs in all treatments which indicated that the eggs were healthy and safe for consumption.
Applying Shainin’s Tools to Process Improvement for Reducing Cracking Defect of Sanitary Product
Authors: Kiatcharoenpol Tossapol , Seeluang Rachan , Klongboonjit Sakon
Published: July 2023

The objective of this research attempt is to implement the DMAIC (Define, Measure, Analyze, Improve, Control) approach, a part of the Six Sigma methodology, in order to diminish the loss of sanitary ware during the production process. Specifically, this study focuses on addressing the issue of cracking defects that often occur in the production of sanitary wares after the firing process. Cracking defects manifest as gaps on the surface of sanitary wares, resulting in nonconforming and aesthetically inferior products. The AG27 Model, a highly demand toilet bowl, was selected as the case study due to its significant occurrence of cracking defects, accounting for 20% of the total defective units. The research utilizes the Six Sigma methodology in conjunction with Shainin's tools to identify the root causes and enhance production yield. The employed Shainin's tools include the Family of variation (FOV's), Concentration chart, Paired comparison, and Better and current (B vs C). The primary focus area of investigation involves the variation in the forming process and the design of the plaster mold. Through the use of the concentration chart, it was determined that the cracking defects predominantly appear along the border line between the rim and body of the toilet bowl. Subsequent experiments, based on paired comparison, confirmed that the design of the border line, which incorporates a hollow body shape, and the potential degradation of mold quality due to frequent use, were the two significant factors contributing to the cracking defects. In order to address these issues, a new design was implemented to enhance the connection between the rim and solid body of the AG27 toilet bowl. The practicality of this solution was validated through the utilization of the B vs C tool during the improvement phase. As a result, the occurrence of cracking defects decreased from approximately 4.0% to 1.92% during the control phase, representing a potential reduction of defects by over 50%.
Evaluation of Calcium Ion Transport Number through a Cation Exchange Membrane By Chronopotentiometry
Authors: Nuñez Alex Willy Pilco , Mel Erick Renato Cirilo , Cordova Freddy Ciro Tineo , Collana Juan Taumaturgo Medina , Venegas Luis Américo Carrasco , Pisfil Jorge Alberto Montaño
Published: July 2023

In this research work, the transport properties of calcium ions (Ca2+) in a heterogeneous cation exchange membrane (IEM) MK-40 of Schekinoazot. Aqueous solutions of sodium chloride (NaCl) and calcium chloride (CaCl2) of 0.01 M and 0.02 M concentration, respectively, were used. The limit current density and transport numbers were evaluated by means of the chronopotentiometry technique, applying electric current pulses, obtaining electric potential differences, from which the chronopotentiograms were obtained. Then, plots of electric potential difference variation with respect to time were constructed to find the transition time. A linear fit of the transition time with the square of the inverse of the inverse of the electric current density was performed based on the modified Sand equation to determine the Ca2+ transport number. The results showed the Ca2+ transport numbers in the cation exchange membrane and in solution are 0.976 and 0.437, respectively. The limiting current density was also found for both membrane-solution systems. We conclude that chronopotentiometry is an accurate and fast technique for the determination of the ion transport number in systems consisting of ion exchange membranes and electrolyte solutions.
X- ray experimental set-up for in-vitro nail test
Authors: Bugno Zamboni Cibele , Nogueira da Silva Giovanni Dalton , Ramos de Almeida Mateus , Sabino Todo Alberto , Sabará Dias Fabio , Rodrigues Junior Orlando
Published: July 2023

In this investigation, the elements Ca and S were evaluated in a single nail clipping using compact and portable X-ray spectrometer model X-123 SDD with Ag target. Experimental conditions for current, voltage and excitation time were investigated. These analyses can be useful for a variety of applications, including nutritional and medical diagnosis, such as, the evaluation of bone dysfunctions by measurement of Ca (bone decalcification) and S for nutrition evaluations (collagen production). This analysis offers some benefits comparatively to blood and serum analyses, such as, non-invasive collection, fast analyses (minutes) and low cost. In addition, nail clippings are simple to obtain, easy to store, and easy to transport. This pilot study show a positive expectation for clinical application using in-vitro nail test.
Albedo method applied for gamma radiation shielding
Authors: Aguiar Augusto Elizandro de , Cabral Ronaldo Glicério , Oliveira Claudio Luiz de , Vellozo Sérgio de Oliveira
Published: July 2023

Mathematical tools for calculating radiation shielding usually have difficult notations that could only be solved by computational methods. The Albedo’s method applied for calculation of shielding proves to be an excellent substitute in determining the incident beam fractions that are reflected, absorbed and transmitted, avoiding the use of the transport equation and diffusion approximation that are extremely important in nuclear reactor designs and irradiation calculations. Based on the simple following of the radiation current path, the method can be characterized as a graphical and analytical solution. This work explores the Albedo’s Method applied to 4-slab shielding with incidence of gamma radiation to an energy group compared to ANISN, computational method consecrated in the area of ​​nuclear calculations.
FUNCTIONAL CAPABILITIES OF THE CARDIOVASCULAR SYSTEM AND STRESS RESISTANCE OF INDIVIDUALS WITH DIFFERENT HEAT SENSITIVITY
Authors:   I.Ya. Horbachevsky Ternopil National Medical University of the Ukrainian Ministry of Public Health, Ukraine, Vadzyuk S.N. , Huk V.O. ,   I.Ya. Horbachevsky Ternopil National Medical University of the Ukrainian Ministry of Public Health, Ukraine, Tabas P.S. ,   I.Ya. Horbachevsky Ternopil National Medical University of the Ukrainian Ministry of Public Health, Ukraine
Published: July 2023

Global warming affects people’s daily life, reduces endurance and work capacity. The purpose of our study is to investigate the functional capabilities of the circulatory system, adaptation potential and stress resistance of individuals with different heat sensitivity. To evaluate the activity of the cardiovascular system, an echocardiographic examination was performed. The reserve capabilities of the heart and the economy of its work were determined using the Robinson index and the Roufier test. Resistance to hypoxia was determined using the Stange and Genchi tests. The degree of oxygen assimilation was evaluated according to the values of maximum oxygen consumption. Cardiorespiratory fitness was determined based on the results of the Rufier test. Adaptation potential was established according to Baevsky’s method. Stress resistance was assessed by determining the response index of the cardiovascular system to psycho-emotional stress. It was established that in people with lower heat sensitivity, the activity of the cardiovascular system is more optimal and more economical and its reserve capacity is greater, compared to higher sensitivity individuals, in which the intensity of its work in an uneconomical mode is increased and the reserve potential is limited. Shorter breath retention time on inhalation and exhalation, respectively, in persons with higher sensitivity to heat indicates a worse oxygen supply to the body. Also, they have a poor ability to absorb oxygen and lower cardiorespiratory efficiency. The predominance of stress adaptation mechanisms and lower stress resistance were also revealed. Thus, our results show that individuals with a higher sensitivity to heat are particularly vulnerable to the negative effects of global warming, which should be taken into account for the prevention of cardiovascular and heat diseases in them in the future.
CURRENT VIEW ON PATHOGENIC MECHANISMS OF DIABETIC RETINOPATHY
Authors:   The Fialtov Institute of the Tissue Therapy of the National Academy of Medical Sciences of Ukraine, Odesa, Ukraine, Mikheytseva I.M.
Published: July 2023

Diabetes mellitus (DM) and its complications are an actual problem of modern medicine. This pathology continues to spread throughout the world like a non-infectious epidemic. In this review new data about the role of different cellular mechanisms in forming of diabetic retinopathy (DR), namely, oxidative-nitrosative stress, mitochondrial dysfunction, neurodegeneration and inflammation. A new approach to DR pathogenesis is the primacy of the neurodegenerative changes in the retina vs previously held views of the problem as а microvascular pathology of the eye only. At the moment, hyperglycemia is considered as the main etiological factor of DR. Activation of the oxidation of excess glucose triggers a cascade of reactions with the formation of oxidative and nitrosative stress. Mitochondria are the most sensitive to oxidative-nitrosative organelles in cells of the retina. Hyperglicemia-induced mitochondrial dysfunction, with cellular respiration disruption and increased production of free radicals in neurons of the retina, can promote their further degeneration and DR enhancing. Local inflammation in the retina, which is facilitated in DM, also considered as a new component of DR pathogenesis. In this case, the inflammatory cascade occurs at the molecular level without clinical manifestations of inflammation. The review provides analysis of modern literature data on this mechanism involving in retinal complications of DM. It is emphasized, that retinal inflammation in DM enhances neurodegeneration and promote retinopathy.
RELATIVE MOTION PARAMETERS ESTIMATION OF A NON-COOPERATIVE SPACECRAFT FROM VISUAL INFORMATION
Authors:   Space Research Institute of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, SALNIKOV N.N. , MELNYCHUK S.V. ,   Space Research Institute of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, GUBAREV V. F. ,   Space Research Institute of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, MAKSYMUK L. V. ,   Space Research Institute of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, SHEVCHENKO V. M. ,   Space Research Institute of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine
Published: July 2023

In this work, we consider the problem of determining parameters of the relative motion of a non-cooperative spacecraft (NSC), which is in free uncontrolled motion, based on the results of measuring the distance to this vehicle and its attitude quaternion. The measurements are assumed to be made by some computer vision system (CVS). A specific type of СVS is not considered. It is supposed the CVS measures the distance and attitude of the so-called graphical reference frame rigidly fixed on the NSC. The parameters of relative motion include the distance vector to the center of mass (c.m.) of the NSC, the attitude quaternion of the principal inertia axes of the NSC relative to the CVS reference frame, the attitude quaternion of the graphical reference frame relative to the NSC principal reference frame, the ratio of the inertia moments, the position vector of the c.m. in the graphical reference frame. The problem is solved using a dynamic filter based on the ellipsoidal estimation method. The method implies knowledge of the maximum values of the measurement noise only, the stochastic noise characteristics are not assumed to be known and therefore are not used. The properties of the proposed algorithm have been demonstrated using numerical simulations. The results obtained are supposed to be used in the development, creation, and testing of a navigation system for the rendezvous and docking of a service spacecraft, developed by a group of enterprises in the space industry of Ukraine under the leadership of the Limited Liability Company “Kurs–Orbital”.
ESTIMATION OF THE POSSIBILITY OF USING ELECTRIC PROPULSION SYSTEMS FOR LARGE-SIZED ORBITAL DEBRIS POST-MISSION DISPOSAL
Authors:   Oles Honchar Dnipro National University, GOLUBEK A. V. , DRON’ M. M. ,   Oles Honchar Dnipro National University, PETRENKO O. M. ,   Oles Honchar Dnipro National University,   Space Electric Thruster Systems
Published: July 2023

The steady increase in the amount of large-sized orbital debris represents a substantial threat to satellite missions. Currently, many methods of cleaning near-Earth space with the use of various means based on various physical principles are considered. Out of them all, the active method using a rocket propulsion system is the most commonly implemented. Considering the high specific impulse, small size, and mass of electric propulsion systems, they are a particularly attractive choice as means of post-mission disposal. Despite their advantages, such systems have certain peculiarities that need to be considered in the process of designing and implementing modern post-mission disposal means. These peculiarities include the maximum time of a single firing of the electric propulsion system, the maximum time of the battery charging, and the time of operation of the control system. The purpose of this work is the determination the capabilities of the modern Hall thrusters ST-25 and ST-40 developed by Space Electric Thruster Systems in solving the problem of post-mission disposal of large-sized orbital debris from low-Earth orbits taking into account the limitations on the power supply system. To achieve this goal, methods of analysis, synthesis, comparison, and computer simulation were used. In the course of the carried-out research, the following problems were solved. A scheme for post-mission disposal of large-sized orbital debris from low-Earth orbit was developed with consideration of the use of an electric propulsion system. The dependence was determined of the minimum delta-v increment required for post-mission disposal of an object within 25 years on the initial altitude of the orbit and the ballistic coefficient of the orbital debris. The upper boundary of the combinations of masses of orbital debris, the altitude of the initial orbit, and the ballistic coefficient were determined, for which post-mission disposal from near-Earth orbits is possible with the use of electric propulsion systems. The obtained results can be used in solving problems of the development of modern means of active post-mission disposal of orbital debris with the use of Hall thrusters developed by Space Electric Thruster Systems
SUITABILITY OF SILICONE FOR SOFT-ROBOTIC EXPLORATION OF TERRESTRIAL AND EXTRATERRESTRIAL OCEAN WORLDS
Authors:   Visual and Autonomous Exploration Systems Research Laboratory University of Arizona, NUNCIO ZUNIGA A. , FINK W. ,   Visual and Autonomous Exploration Systems Research Laboratory University of Arizona
Published: July 2023

This work revisits relevant mechanical and chemical properties of silicone rubber — Ecoflex in this study — to assess its suitability and viability for use in soft-robotic explorer construction and subsequent deployment and as a sealant for communication beacons, sensor pods, and other electronics in extreme planetary liquid environments, such as the depths of Earth’s oceans and extraterrestrial ocean worlds. Strain at a range of temperatures, as an indicator for operational durability, was tested under various endpoint clamp forces for several compound ratios. The temperature range at which silicone rubber remains pliable was assessed to determine its deployability. The re-binding property of cured silicone rubber samples with newly curing samples was investigated for its potential for additive manufacturing in soft robotics. Finally, the dissolution resistance, non-polarity, and electrical non-conductivity of silicone rubber were studied to assess its suitability for sealing electronics to be submerged in the salt water of both ocean and saturated salinity, as well as in hydrocarbon liquids. This work highlights critical aspects of silicone rubber for use in the construction, coating, and deployment of future soft robotic extraterrestrial liquid body explorers: The chosen silicone rubber Ecoflex is an electrically non-conducting sealant and pliable soft robotics material for temperatures above 50 °C, deployable in earthly extreme aqueous environments. Moreover, this work lays the foundation, albeit likely with different (silicone) rubbers/polymers due to much lower temperatures, for the robotic exploration of extraterrestrial liquid environments on ocean worlds, such as the hydrocarbon lakes on Titan and the putative subsurface oceans on Europa, Titan, and Enceladus.