bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of Boost Converter Integrated with Graphical User Interface
Authors: Badri Sesrima , Krismadinata Krismadinata 
Published: September 2020

This article discusses the design of a Boost type of DC-DC converter with a monitoring GUI. The increase in the output voltage of the converter is done by adjusting the pulse width (PWM). Change the size of the PWM is done by using a switching component in the form of MOSFETs, as well as the use of a gate drive that serves as a signal and security reinforcement between the control circuit and its main circuit. The input voltage of the converter is designed at 12VDC, with an output voltage of 12VDC-24VDC. In this study the GUI was successfully added to display several variables such as voltage (Volt), current (Ampere), as well as graphs of the input and output voltage of the boost converter. GUI monitoring of the converter can be viewed via a PC using Visual Studio 2012 software.
Artikel ini membahas tentang perancangan sebuah rangkaian konverter DC-DC tipe Boost (penaik tegangan) dengan GUI monitoring. Kenaikan tegangan keluaran dari konverter dilakukan dengan mengatur lebar pulsa (PWM). Pengubahan besar kecilnya PWM dilakukan dengan meggunakan komponen switching berupa MOSFET, serta penggunaan gate drive yang berfungsi sebagai penguatan sinyal dan pengaman antara rangkaian kontrol dan rangkaian utamanya. Tegangan masukan dari konverter dirancang sebesar 12VDC, dengan tegangan keluaran 12VDC-24VDC. Dalam penelitian ini GUI berhasil ditambahkan untuk menampilkan beberapa variabel seperti tegangan (Volt), arus (Ampere), serta grafik tegangan masukan dan keluaran dari konverter boost. GUI monitoring dari konverter dapat dilihat melalui PC menggunakan software Visual Studio 2012.
Effect of Alkaline Treatment on The Mechanical Properties of Pineapple Leaf Fiber Composite Material
Authors: Putra M Febriyan Baruna , Sari Delima Yanti , Nurdin Hendri , Mulyadi Rodesri 
Published: September 2020

Utilization of natural fiber waste, especially pineapple dau fiber, is a major concern and continues to be developed to utilize and optimize plantation waste as a material that is more environmentally friendly, energy efficient and inexpensive. The purpose of this study was to determine the effect of alkaline treatment on the mechanical properties of pineapple leaf fiber composite material as an appropriate alternative material. The method in this research is the experimental method, where the research was carried out by giving variations in the percentage of alkaline 10% and 20%. The results of the research on the composite material of pineapple leaf fiber using tensile testing showed that giving alkaline treatment with a percentage of 20% made the fiber stronger but brittle. In addition, the orientation direction and immersion time also affect the tensile strength of the fibers.
Pemanfaatan limbah serat alam khususnya serat dau nanas menjadi bahan alternatif menjadi perhatian utama serta terus dikembangkan guna memanfaatkan dan mengoptimalkan limbah perkebunan sebagai bahan material yang lebih ramah lingkungan, hemat energi, dan murah. Tujuan penelitian ini untuk mengetahui pengaruh perlakuan alkali terhadap sifat mekanik material komposit serat daun nanas sebagai bahan alternatif tepat guna. Metode dalam penelitian ini yaitu metode eksperimen, dimana penelitian dilakukan dengan pemberian variasi persentase alkali 10% dan 20%. Hasil penelitian material komposit serat daun nanas dengan menggunakan pengujian tarik menunjukkan bahwa pemberian perlakuan alkali dengan persentase 20% membuat serat menjadi lebih kuat namun bersifat getas. Selain itu, arah orientasi dan waktu perendaman juga mempengaruhi kekuatan tarik serat.
A Web-Based Information System for Student Affairs Letter Management : Design and Implementation in Padang State Polytechnics
Authors: Rasyidah Rasyidah , Azmi Meri , Wicaksana Widya 
Published: September 2020

Today, to create the official student affair letters in the Padang State Polytechnic has not been computerized yet, so students have to queue and it takes a long time. With this developed system, there is no longer a queuing process at the counter, students can fill out a form through the system and will receive a notification when the official letter has been confirmed from related section. With this system, the campus is also facilitated in the process of searching for data, for example knowing the student who made the letter, the graph of each category of making a letter per year from the letter application. The system is built with the PHP programming language with Code Igniter framework and MySQL as DBMS.
Pembuatan surat kemahasiswaan yang dilakukan di Politkenik Negeri Padang belum terkomputerisasi, sehingga mahasiswa harus mengantri dan waktu yang dibutuhkan lama. Dengan sistem yang dikembangkan ini, tidak adalagi proses antrian di loket, mahasiswa dapat mengisi form surat melalui sistem dan akan menerima notifikasi ketika surat telah dikonfirmasi dari pihak terkait. Dengan sistem ini, pihak kampus juga dimudahkan dalam proses pencarian data, misal mengetahui mahasiswa yang melakukan pembuatan surat, grafik setiap kategori dari pembuatan surat pertahun dari permohonan surat. Sistem dibangun dengan bahasa pemrograan PHP dengan framework Code Igniter dan MySQL sebagai DBMS.
INVESTIGATING THE E-LEARNING READINESS OF GHANAIAN PARENTS DURING COVID-19
Authors: Amanor-Mfoafo Naa Kai , Akrofi Olivia , Edonu Kwamina Kurefi , Dowuona Ebenezer Nortei 
Published: September 2020

<p>In recent times, the Coronavirus (COVID-19) pandemic has led to unprecedented changes in the livelihood of mankind globally bringing most socio-economic activities to a standstill. The Education sector is not exempted. With the current closure of schools to contain the spread of the virus, this study sought to investigate the readiness of Ghanaian parents to support their children with e-learning while at home. Using a survey research method, parents of children in primary one to six responded to a questionnaire. Data collected from 113 parents were analyzed. The study used a factor analysis to analyze the factors influencing parental readiness. The findings indicated that parents with a high socio-economic status were more prepared to assist children with e-learning as compared to parents with low socio-economic status during COVID-19. It is being recommended that schools invest more resources in conducting e-learning training sessions for parents. The study contributes to ongoing discussions on COVID-19 and Education.</p><p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0620/a.php" alt="Hit counter" /></p>
NEW METHODS OF TEACHING LAW PROBLEMS & PERSPECTIVES
Authors: Upadhyay Niteesh Kumar 
Published: September 2020

There has been shift from, only ‘Class Room Learning’ to the ‘Clinical Method of Learning’ and it will be the major revolutionizing work in the history of Law Teaching. The researcher will discuss in detail the learning by doing method which can be used for teaching law students and also evaluating them. The present ‘Learning by doing Model" can also be used to evaluate various projects of students. Apart from that the researcher will present quite a few models to integrate the different subjects with clinical approach of teaching law and make recommendations as to how this can be mentored and evaluated. The researcher has discussed in detail the model adopted in Galgotias University and its pros and cons and how this model has helped the students in better learning.
Impact of terrible pandemic COVID-19 on Kazakhstani education and it’s outcome.
Authors: Bektursynova Akbota , Sarsengaliyeva Botagoz 
Published: September 2020

General situation of Coronavirus in the world and in Kazakhstan and its impact on our life, especially on education. The article examines the drawbacks of the epidemic COVID-19 on education of Republic of Kazakhstan. By evaluating influence of pandemic and it’s outcomes to learning and teaching, authors also trying to have discussion and critical approach to both Kazakhstani and Global context. Main aspects like teachers, teaching, parents, assessment that have been influenced by the COVID-19 give us clear information how is life going in a tough period of lifetime and what kind of benefits could be gain and learnt. Every impacted aspect reacted in different way, some had great performance, meanwhile, some had unlikely results. Moreover, how and what did change global pandemic in Kazakhstan education system. The changes could be either positive or negative. How have transformed the education and what kind of tools have been using the teachers so far?
Подходы учителей в преподавании математики через контекст реально-жизненных ситуации в основной школе
Authors: Сатбаев Сындар Кайдарулы 
Published: September 2020

Целью данного исследования является изучение восприятия учителями математики математического моделирования в общеобразовательных школах Казахстана. Математическое моделирование - это способ изучения реальных задач на занятиях. Кроме того, в данном исследовании рассматривается влияние взглядов некоторых комментаторов на условия работы школ и необходимость преподавания математики через реальные задачи. Исследование проводилось с использованием плана количественного корреляционного исследования, описательной статистики и T-теста.В опросе приняли участие восемьдесят четыре преподавателя математики из разных школ Казахстана. Данные были отобранны с помощью электронного и бумажного вопросника, состоящего из 24 пунктов. В начале исследования было предложено заполнить демографическую информацию (включая возраст, пол, род занятий и высший уровень образования), и опыт работы в области преподавания (включая профессиональное развитие, учебный год, тип школы). В следующем разделе участники использовали при ответе на вопрос о своих знаниях преподавание реальных задач и математических задач. Например, были проблемы с выбором, а учителя ссылались на то, есть ли ММ или нет. Следующие вопросы касались восприятия преподавателями математического моделирования. Например, хотят ли они использовать математического моделирования в своих рядах? Результаты опроса показали, что в целом не знакомы с ММ. Кроме того, учителя, которые думали, что знают математическое моделирование, вообще не знали этого должным образом. Исследование прелогает, что учителя готовы применять ММ, однако, существует множество проблем и препятствий. Например, думают что в их школе плохие возможности для преподавания математического моделирования, или в их школе существует мало учебных программ и учебников по математическому моделированию. По их мнению, ученики и родители не настроены использовать новые подходы на уроках математики. В итоге, существует высокие потребности на профессиональное развитие в области математического моделирования и адекватные отношение со стороны политиков для реализации математического моделирования.
PENDEKATAN TAFSIR MAUDHU’I DALAM METODE DAKWAH
Authors: Faisal Muhammad 
Published: September 2020

Da'wah is a call to go to the right path, namely the path that has been determined by Allah Almighty through the Book of Allah (the Qur'an) and the sunnah of His Prophet (hadith). In carrying out the principles of da'wah there are methods that must be considered by the da'i. this is very important considering that the correct and appropriate method in place can make the da'wah listeners interested in following what the da'i have said. pendekatan tafsir maudhu'i is an approach that can be used in the method of preaching. Because by using this approach, the message conveyed by the da'I can be fully conveyed.
DAMPAK LABEL SYARIAH TERHADAP PENDAPATAN PADA USAHA JASA DI KOTA LANGSA (Studi Kasus Pada Amanah Wash Laundry Syariah)
Authors: Nurjanah  , Rafiza Zuliani  
Published: September 2020

At present there are a lot of home business industries such as cleaners who use the concept of sharia. This paper would like to examine one of the laundry business that uses the concept of sharia in the city of Langsa. This study aims to look at the impact of sharia labels on income on the Laundry Laundry Laundry Amanah Amanah. The method used is qualitative analysis with comparative and interactive techniques. The results showed that the impact of sharia labels onwashing shariah laundry trust income influences but not significantly because some customers use laundry services based on logic, service quality, location, and others. Then, the application of the thaharah principle to washing clothes in the Islamic Shariah laundry trust is appropriate. Revenue from March to April increased by 4.47%, this is because there are still only the same people who are customers of the Shariah Laundry Trust Trust and customers inviting friends orrelatives of customers to use the Shariah Laundry Trust Trust Service.
ANALISIS DAMPAK PENGANGGURAN BERPENGARUH TERHADAP INDIVIDUAL
Authors: Rianda Cut Nova 
Published: September 2020

Unemployment in the individual tends mostly come from the workforce with senior high school level both general or vocational, and Bachelor degree compared with the level of junior and elementary education. This is due to the lack of synchronization between educational planning as well as available employment from the higher level of education owned by the workforce will be higher also aspirasinya to get a more appropriate position or employmentopportunities. The purpose of this study was to investigate the effect both simultaneously and partially the minimum wage, economic growth, investment, and the proportion of working age population to uneducated unemployed regency or individual. This study uses multiple linear regression analysis and using secondary data. Based on the test results, simultaneously minimum wage, economic growth, investment, and proportion of working age population simultaneously affect the educated unemployed regency or individual. Partially the minimum wage, economic growth, and investment have a negative and significant effect and the proportion of the working age population has a positive and significant impact on the unemployed educated regency or individual.
ANALISIS PENGARUH JUMLAH PENDUDUK DAN PRODUK DOMESTIK REGIONAL BRUTO (PDRB) TERHADAP KEMISKINAN DI KABUPATEN NAGAN RAYA
Authors: Muliza Muliza 
Published: September 2020

Product Domestic Regional Bruto (PDRB) on poverty in Nagan Raya Regency both partially and simultaneously during the period 2010 to 2019. The dependent variable in this study is the independent variable is the population and PDRB. The method used to study the effect of the independent variables on the dependent variable uses multiple linear regression analysis. Based on the results of the study and from the results of data analysis, it can be concluded that the simultaneous variable of population and PDRB is significant to the poverty variable, it can be seen from the F-count value greater than F-table. From the results of the determination coefficient value is calculated under the variable influence of population and PDRB of 87.9% and the remaining 12.1% is influenced by other variables outside this research model, but simultaneously the variable number of population and PDRB does not provide significant results on welfare in Nagan Raya Regency can be seen from the value of Thitung the second variable is smaller than the value of T table.
Financial Indicators of Selected Service-Provider Companies of Telecommunication Sector in India: An Empirical Study
Authors: Tushar R. Ajmera 
Published: September 2020

Purpose: The aim of this article is to measure profitability of selected services provider companies of telecommunication sector in India. The study also aims to identify liquidity and solvency of the selected services provider companies of telecommunication, and how these indicators determine their management efficiency.
Approach/Methodology/Design: In this study, three service-provider telecommunication companies operating in India were selected. The study period is from 2013-14 to 2017-18. The criterion for selection of samples is market capitalization in which higher capitalized companies are selected like Bharti Airtel, Tata Communication and Reliance Communication. In this study ratio analysis is used as accounting tool, and One-way Anova technique is used as statistical tool for the identification of difference between the sample means.
Findings: The major findings of the study indicate that Bharti Airtel and Tata Communication are in a better financial soundness as compared to Reliance Communication. In addition, the results of the study reveal that Reliance Communication suffered huge losses during the study period.
Practical Implications: The study examines the status of the telecommunication sector with the current rules and regulations provided by government. It also assess the financial condition of the selected telecommunication companies, providing a systematic evaluation based on certain financial indicators that can help investors make relevant decisions.
Originality/value: The financial indicators are important figures which give an overview about the financial health of any particular organization. There are number of financial indicators which are employed to identify the fair and true picture of organization. Profitability, liquidity and solvency ratios are one method for the identification of financial strength or weakness out of number of methods.
The Influence of International Pre-Service Teaching Program Towards Students’ Speaking Ability at University of Muhammadiyah Makassar
Authors: Suardi Suardi , Akib Erwin , Ma’ruf Amar 
Published: September 2020

The objective of the research is to find out the influence of International Pre-service Teaching Program toward students’ speaking English ability at Makassar Muhammadiyah University. The researcher applied descriptive qualitative research. The population of the research was the students who join International Pre-service Teaching Program (P2K International) at Makassar Muhammadiyah University. The researcher used total sampling technique. The population consisted of 15 students who joined in 2014 and 13 students who joined in 2015. The result of the research data showed that there were 25.31% students chose Strongly Agree from 237 items in positive statement and 37.14% Agree, 27.85% Undecided, 5.90% Disagree, and then 3.80% students chose Strongly Agree. While 1.57% students chose Strongly Agree from 254 items in negative statement and 10.24% Agree, 21.26% Undecided, 23.63% Disagree, and then 43.30% students chose Strongly Agree. In self-confidence aspect they feel no worry anymore to speak in public, in grammar they can not deny that their grammar become better, in fluently their English speaking is not slow as beginner, and their vocabulary significantly enriched after the program. All these aspects lead the students to become speaker especially in English. Having analyzed the data, it can be concluded that Pre-service teaching international program has significantly influence and improved the students’ English speaking ability at Makassar Muhammadiyah University.
Safety and efficacy of naltrexone for weight loss
in adult patients – a systematic review
Authors: Kulak-Bejda Agnieszka , Bejda Grzegorz , Waszkiewicz Napoleon 
Published: September 2020

IntroductionThis is a report of a systematic review of the safety and effica�cy of naltrexone or naltrexone/bupropion on weighMaterial and MethodsThe databases Medline, PubMed, and Embase as
well as the Cochrane Controlled Trials Register for randomized controlled tri�als were searched for studies published from January 1966 to January 2018.
A meta-analysis, randomised controlled trials, controlled trials, uncontrolled
trials, cohort studies and open-label studies were analysed.ResultsOf 191 articles, 14 fulfilled the inclusion criteria: 1 meta-analysis,
10 randomized controlled trials, and 3 studies without randomization were
found. In these studies, the efficacy and safety of naltrexone/bupropion
in obesity were analysed. In the majority of these studies, patients with
at least 5% or 10% weight loss, as a primary outcome, were investigated.
Generally, naltrexone/bupropion treatment can be a promising therapy for
obese patients, including when combined with mental health treatment.ConclusionsBased on these studies, it can be said that naltrexone/bupropi�on treatment is effective in the weight loss of overweight subjects. The nal�trexone/bupropion treatment was well tolerated by the patients, and side
effects were rarely reported.
Protective mechanism of kaempferol against Aβ25-35-mediated apoptosis of pheochromocytoma (PC-12) cells through the ER/ERK/MAPK signalling pathway
Authors: Zhang Ning , Xu Hongdan , Wang Yueying , Yao Yuan , Liu Guoliang , Lei Xia , Sun Huifeng , Wu Xiuhong , Li Jianmin 
Published: September 2020

IntroductionProgressive accumulation of amyloid-β (Aβ) is a pathological trait of Alzheimer’s disease (AD). Amyloid-β increases free radical production in neuronal cells, leading to neuronal cell death. Hormone replacement therapy can reduce the incidence of AD, and oestrogen significantly improves the clinical signs in patients with AD. However, the long-term use of oestrogen causes a variety of diseases. Phytoestrogens have been reported to bind and activate oestrogen receptors in mammals and humans to produce oestrogen-like or anti-oestrogen-like effects. Kaempferol is a flavonoid phytoestrogen that can produce a certain protective effect in neurons. However, the molecular mechanism of kaempferol in AD is unclear.Material and methodsThis study used pheochromocytoma (PC-12) cells that were damaged by Aβ<SUB>25–35</SUB> as an in vitro model of AD, and oestradiol was a positive control. The cells were incubated with kaempferol alone or in combination with fulvestrant (an antagonist of ER) and U0126 (an inhibitor of ERK) in Aβ<SUB>25–35</SUB> culture. Cell activity was measured by the MTT method. Cell apoptosis was evaluated by flow cytometry. Gene and protein expression levels were tested by qRT-PCR and Western blotting.ResultsThis study demonstrated that kaempferol protected PC-12 cells from Aβ<SUB>25–35</SUB>-induced cell death and apoptosis in a dose-dependent manner. Treatment with fulvestrant (an antagonist of ER) and U0126 (an inhibitor of ERK) significantly increased the apoptosis of PC-12 cells. Moreover, kaempferol promoted the expression of anti-apoptotic molecules and inhibited the expression of pro-apoptotic molecules, which were blocked by fulvestrant and U0126.ConclusionsKaempferol protected PC-12 cells against Aβ<SUB>25–35</SUB>-induced cell apoptosis through the ER/ERK/MAPK signalling pathway.