bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermal Behaviour in the Stereolithography Process for Al2O3 Ceramic Suspension
Authors: Qian Chu Chu , Li Xin Yi , Hu Ke Hui , Li Pei Jie , Lu Zhi Gang
Published: January 2021

In the process of ceramic stereolithography, the polymerization process of acrylate is exothermic, resulting in changes to temperature of the slurry, which may affect the quality of green parts. In this work, the heat source input in simulation is based on the in-situ measurement of conversion rate and calculated polymerization exotherm. The simulation results showed that the different structures underwent a 1~3°C maximum temperature rise. A thermal infrared detector was used to capture the in-situ temperature changes in entire exposure surface for several structures during the photopolymerization process. The experimental data validated the simulation results and showed that the temperature change and distribution area in the process were related to the exposure structure. The discontinuous structure and the increase of structural boundary length could accelerate the thermal diffusion, thus reducing the heat concentration in the center. Polymerization rate rose marginally with the incident light intensity until at the intensity of 20 milliwatts. Besides, intensity had little effect on the temperature gradient from the center to the boundary of the exposure area. It is inferred that the additional temperature rise after the peak temperature is an indicator of the occurring of secondary photopolymerization during multilayer exposure. And for the same input energy, reducing the exposure intensity and increasing the exposure time to some extent may help improve the degree of secondary photopolymerization. This work provided valuable guidance for the study of the photopolymerization process and structural design of ceramic stereolithography.
A High Thermoelectric Performance ZT in p-Type LaSe2 Crystal
Authors: Liu Jian
Published: January 2021

In this work, we use first principles DFT calculations, anharmonic phonon scatter theory and Boltzmann transport method, to predict a comprehensive study on the thermoelectric properties as electronic and phonon transport of layered LaSe2 crystal. The flat-and-dispersive type band structure of LaSe2 crystal offers a high power factor. In the other hand, low lattice thermal conductivity is revealed in LaSe2 semiconductor, combined with its high power factor, the LaSe2 crystal is considered a promising thermoelectric material. It is demonstrated that p-type LaSe2 could be optimized to exhibit outstanding thermoelectric performance with a maximum ZT value of 1.41 at 1100K. Explored by density functional theory calculations, the high ZT value is due to its high Seebeck coefficient S, high electrical conductivity, and low lattice thermal conductivity .
Study on Preparation of Novel Dicyclopentadiene Phenol Epoxy Resin Materials Based on Different Degrees of Polymerization
Authors: Ma Shao Bo , Xi Zhao , Wang Gang , Cheng Li , Zhang Wei
Published: January 2021

This paper briefly describes the relevant properties of epoxy resin materials, and introduces the domestic and international progress of dicyclopentadiene (DCPD) phenolic epoxy resin. The process conditions of dicyclopentadiene phenol resin and epoxy resin were studied. Dicyclopentadiene phenol epoxy resin with different degrees of polymerization was prepared. The reaction heat was measured and the curing temperature, time and curing were analysed. The influence of factors such as the agent structure on the gel time and curing degree of DCPD phenol epoxy resin; the effects of temperature and time on the curing reaction of DCPD phenol epoxy resin were discussed.
A Preparation Method of β-Carotene Reference Standard from β-Carotene Food Additive Based on High Speed Countercurrent Chromatography (HSCCC)
Authors: Tao Lan , Wang Zhi Ming , Lu Shu Huan , Xu Liu Liu , Li Mu Zi , Li Xiang Yu
Published: January 2021

The paper provided a simple method for preparing the β-carotene reference standard from a β-carotene food additive (96%) based on high speed countercurrent chromatography (HSCCC). The obtained material was qualitatively detected by IR, NMR, MS, the results showed the material was purified β-carotene, the purity of obtained β-carotene reference standard can be as high as 99%. The prepared reference standard can be used for quality control of related health food. The provided method is simple, universal, cheap, and the sample preparation can be enlarged to g grade.
Study on Electrochemical Oxygen Evolution Properties of Bimetallic Carbon Nan Sheets
Authors: Duan Qian
Published: January 2021

Transition metal oxide doped two-dimensional materials, which combine the advantages of multiphase and homogeneous electrocatalysts, have attracted extensive attention in recent years. However, the electrocatalysts with single metal component can not further meet the requirements of catalytic performance. In this paper, a bimetallic organic complex, CuCo-MOF, was prepared from L-aspartic acid and copper ions and cobalt ions. The effects of temperature and metal ratio on the oxygen evolution properties of the prepared materials were investigated, and CN@CuO/Co2O3 nanosheets with excellent oxygen evolution electrochemical activity were optimized. The catalyst is a compound of CuO and Co2O3 nanoparticles doped into the carbon nitrogen matrix. A large number of homogeneous CuO and Co2O3 nanoparticles cooperate on the ultra-thin carbon nitrogen substrate with high conductivity, showing low initial oxygen evolution over potential and high catalytic current density. A current density of 10 mA cm-2 can be only achieved at 1.54 V vs. RHE.
Study on the Development and Performance of a New Concrete Antifoaming Agent
Authors: Li Ge Li , Fang Yun Hui , Wu Chuan Deng , Shao You Zhe , Guo Yuan Qiang , Ma Xiu Xing
Published: January 2021

Gemini surfactant acetylene glycol polyethers and polyhydrosilicone oil were used as raw materials to generate the acetylene glycol surfactants with defoaming, antifoaming properties, and polyether modification through a hydrolyzation reaction. A novel silicone surfactant based on acetylene glycol-modified polyoxysilane, which has the advantages of low surface tension and good water solubility. Its structure characterized by infrared. Finally, the new silicone surfactant prepared was emulsified with a composite emulsifier, and a new concrete defoamer was prepared by a mechanical method. The defoaming performance, foam suppression performance and surface tension were tested. The results showed that the new silicone surfactants contained functional groups of acetylene glycol and siloxane. The composite emulsifiers were Span40 and Tween60, which the HLB value was 10, the amount was 5% and the emulsification time was 30 minutes. The prepared new concrete defoamer has good defoaming and antifoaming properties with a low surface tension.
Effect of Tempering Process on Microstructure and Mechanical Properties of Low Alloyed Cast Steel
Authors: Fan Hui Ji , Chen Bo , Wen Jun , Jin Xin
Published: January 2021

The effect of tempering process on the microstructure and properties of low alloyed cast steel was studied. The results show that tempered at (200~400)°C, the M/A island of the granular bainite decomposes and carbide precipitates. When the tempering temperature rises to (500~600)°C, the M/A island is completely decomposed, and the carbide aggregates and gradually spheroidizes. With the increasing of tempering temperature, the tensile strength increases first and then decreases, elongation and impact energy show a trend of increasing at first, then decreasing and then increasing. The tempering brittleness occurs at 400°C.
PELATIHAN PEMBUATAN HAND SANITIZER DARI BAHAN ALAMI DI DESA OTVAI
Authors: Rosalina Y. Kurang  , Efrin A. Dollu  , Isak F. Alelang
Published: January 2021

Hand sanitizer merupakan salah satu bahan antiseptik berupa gel yang sering digunakan banyak orang sebagai media pencuci tangan  yang praktis. Ditengah kondisi pandemi Covid-19 maka ketersediaan produk pencuci tangan (hand sanitizer) menjadi barang langka dan harganya cenderung lebih mahal dari biasanya, hal ini dikarenakan meningkatnya pembelian oleh masyarakat. Oleh karena itu, dibutuhkan antiseptik alternatif lain seperti hand sanitizer alami dengan memanfaatkan tumbuhan sekitar seperti daun siri dan jeruk. Kegiatan pengabdian yang dilaksanakan di Desa Otvai yaitu pelatihan pembuatan hand sanitizer dari bahan alami yaitu daun siri dan jeruk. Dari kegiatan ini masyarakat sangat respon aktif dan juga terdapat peningkatan  pengetahuan dan ketrampilan masyarakat tentang cara pembuatan hand sanitizer dari bahan alami dan melaui kegiatan ini juga mengurangi biaya pengeluaran tambahan untuk pembelian produk hand sanitizer dalam menanggulangi penyebaran Covid-19
PELATIHAN MEMBUAT DAN MENGELOLA WEBSITE SEKOLAH
Authors: Izzah Nurul
Published: January 2021

Website dalam perkembangnnya telah merambah ke berbagai sisi kehidupan termasuk dunia pendidikan. Website sekolah merupakan media informasi yang dapat dimanfaatkan sekolah secara efektif dan efisien dalam penyampaian informasi-informasi yang berhubungan dengan sekolah. Kegiatan dilakukan secara tatap muka selama satu hari dengan tetap menerapkan protokol kesehatan dalam pencegahan Covid-19. Metode pelatihan dilakukan dengan beberapa tahapan yang dimulai dari perencanaan, pelaksanaan dan evaluasi. Pelatihan lebih menitikberatkan pada kegiatan praktek dibandingkan dengan penjabaran materi. Hasil kegiatan pelatihan menunjukkan bahwa peserta pelatihan memiliki pemahaman yang meningkat terkait manfaat website sekolah sebagai sarana atau media informasi sekolah. Kemampuan peserta pelatihan terkait cara membuat dan mengelola website sekolah juga mengalami peningkatan. Hal ini ditunjukkan dari website sekolah yang dapat diakses dengan tampilan beranda website yang menarik dan informatif.
ANALISIS KEMAMPUAN PEMECAHAN MASALAH MATEMATIK PESERTA DIDIK KELAS VIII SMP
Authors: Lusi Nuraeni  , Huri Suhendri  , Aulia Masruroh
Published: January 2021

Penelitian ini bertujuan untuk untuk menganalisis kemampuan pemecahan masalah matematika siswa berdasarkan tahapan pemecahan masalah. Penelitian ini menggunakan metode penelitian kualitatif. Sampel dalam penelitian ini adalah siswa kelas VIII A, subjek penelitian menggunakan teknik purposive sample, melibatkan 3 subjek mewakili 3 kelompok kemampuan pemecahan masalah. Pengumpulan data menggunakan teknik tes, wawancara, dokumentasi, dan observasi. Analisis data menggunakan teknik reduksi, penyajian, dan kesimpulan. Berdasarkan klasifikasi kemampuan ditemukan dari sebanyak 36 siswa diperoleh sebanyak 7 (19,44%) kategori “tinggi”, 11 siswa (30,56%) termasuk kategori “sedang”, dan 18 siswa (50,00%) kategori “rendah”.  Kesimpulan penelitian ini bahwa kemampuan pemecahan masalah matematika siswa pada materi lingkaran masih tergolong rendah
PENERAPAN LOGIKA FUZZY DALAM MENENTUKAN JUMLAH PESERTA BPJS KESEHATAN MENGGUNAKAN FUZZY INFERENCE SYSTEM SUGENO
Authors: Bakri Rahmawati , Rahma Ade Novia , Suryani Irma , Sari Yusnita
Published: January 2021

Tujuan dari penelitian ini adalah untuk menentukan jumlah kepesertaan PBI pada BPJS Kesehatan Cabang Kota Pekanbaru. Dalam penelitian ini digunakan metode FIS Sugeno yang merupakan salah satu Fuzzy Inference System. Tahapan-tahapan yang dilakukan yaitu menentukan himpunan fuzzy, fungsi implikasi, dan defuzzyfikasi serta keakuratan peramalan. Hasil penelitian ini menunjukkan bahwa jumlah kepesertaan PBI dengan variable input BPBI dan Jamkesda dan PJKMU Askes menggunakan Metode FIS Sugeno memiliki nilai keakuratan yang mecapai 94,17%, hal ini berarti hasil peramalan yang dilakukan mendekati dengan jumlah kepesertaan sebenarnya
PENERAPAN DATA MINING PADA JUMLAH PENDUDUK MISKIN DI INDONESIA
Authors: Nugroho Arif Sudibyo  , Ardymulya Iswardani  , Kartika Sari  , Siti Suprihatiningsih
Published: January 2021

Tujuan penelitian ini adalah menerapkan data mining pada jumlah penduduk miskin di Indonesia dengan data 2006 sampai Maret 2020. Akan dilakukan analisis cluster dengan metode k-menas kemudian dilakukan prediksi pada jumlah penduduk miskin di Indonesia. Hasil penelitian menunjukkan bahwa dengan analisis cluster metode k-means diperoleh dua cluster. Selanjutnya, berdasarkan prediksi yang telah dilakuakan dengan double exponential smoothing dengan nilai Alpha 1,094 dan Gamma 0,539, diprediksi periode selanjutnya terdapat 27,4405 juta jiwa penduduk miskin di Indonesia.
Improving VIII Grade Students’ Mathematical Problem Solving Ability Through Realistic Mathematics Education
Authors: Purwadi I Made Ari
Published: January 2021

This classroom action research was aimed at describing the improvement of students' mathematical problem solving (MPS) ability through Realistic Mathematics Education (RME). Nineteen students of VIII grade in SMP Laboratorium Undiksha in the first semester of the academic year of 2019/2020 were taken part as the research subject. This research data was collected by observation sheet and essay-test then it analyzed descriptively using simple statistics. The result of the research showed that the average score of students’ MPS ability on the first cycle equals 71,92, the second cycle equals 73,2, and the third cycle equals 75. As demonstrated, the implementation of RME could increase students’ MPS ability. Hence, the implementation of RME made students more motivated, more active on discussion and learning process, solved problems more easily, and more trained to communicate their understanding.
An Experienced Chinese Teacher’s Strategies In Teaching Mathematics: Translation of Quadratic Functions
Authors: Huang Xingfeng , Yang Jinglei , Tang Bingxing , Gong Lingmei , Tian Zhong
Published: January 2021

The study selected the topic of translation of quadratic functions. In order to explore some effective instructional strategies to help students understand this topic, an experienced teacher was chosen for a case study. Based on lesson observation and semi-structure interviews, this study found that the teacher employed various strategies to facilitate students understanding of translations of quadratic functions.
Mathematical Investigation Proficiency among Singapore Secondary School Students: An Exploratory Study
Authors: YEO Joseph B. W.
Published: January 2021

This article presents an exploratory study to find out whether high-ability secondary school students in Singapore were able to deal with open mathematical investigative tasks. A class of Secondary One (or Grade 7) students, who had no prior experience with this kind of investigation, were given a paper-and-pencil test consisting of four open tasks. The results show that these students did not even know how to begin, despite sample questions being given in the first two tasks to guide and help them pose their own problems. The main difficulty was the inability to understand the task requirement: what does it mean to investigate? Another issue was the difference between searching for any patterns without a specific problem to solve, and searching for patterns to solve a given problem. The implications of these findings on teaching and on research methodologies that rely on paper-and-pencil test instruments will also be discussed.
Juggling Mathematical Understanding
Authors: White Allan Leslie
Published: January 2021

This paper presents a theoretical model for the teaching for understanding of school mathematics. After describing two categories of understanding, it develops a continuum between rote and insight. In the process of describing the model, it articulates the assumptions underpinning the model and presents a process whereby a teacher can move the teaching strategies towards the development of insight within the students. It will argue that the development of insight should be the goal of all school mathematics classrooms. And that in order to achieve this goal the classroom teacher must become an expert juggler by simultaneously applying teaching strategies that develop student proficiency with skills, positive attitudes towards mathematics and deep connected conceptual knowledge.
The Scientific Calculator and School Mathematics
Authors: Kissane Barry
Published: January 2021

Scientific calculators are sometimes regarded as important only for obtaining numerical answers to computational questions, and thus in some countries regarded as inappropriate for school mathematics, lest they might undermine the school curriculum. This paper argues a contrary view that, firstly, numerical computation is not the principal purpose of scientific calculators in education, and secondly that calculators can play a valuable role in supporting students’ learning. Recent developments of calculators are outlined, noting that theirprincipal intention has been to make calculators easier to use, align their functionality with the school mathematics curriculum and represent mathematical expressions in conventional ways. A model for the educational use of calculators is described, with four key components:representation, computation, exploration and affirmation. Examples of how these might impact positively on school mathematics are presented, and suggestions are made regarding good pedagogy and curriculum with calculators in mind. The paper concludes that scientific calculators represent the best available technology to provide widespread access to some ICT in the mathematics curriculum for all students in the SEAMEO region.
Profiling Self-regulated Learning in Online Mathematics Teacher Training: A Case Study of a GeoGebra Course
Authors: Marfuah Marfuah
Published: January 2021

Online training has now become an alternative means of delivering continuousprofessional development courses to improve teacher competencies. The benefits of online training are flexibility of access, cost efficiencies, ease of content updates, and uniformity of content. However, there are many aspects that determine if teachers can be successful in online training, and one is self-regulated learning. This study aims to profile self-regulated learning as case study in an online mathematics teacher training held by PPPPTK Matematika using GeoGebra. Using a survey method, this study describes the participants’ self-regulated learning profile as they accomplished nine tasks in the GeoGebra course.
What Can We Learn from the ELPSA, SA, and PSA Frameworks? The Experience of SEAQiM
Authors: Shadiq Fadjar
Published: January 2021

One of education problems in Indonesia according to Dr. Anies Baswedan, the former Minister of Education and Culture of the Republic of Indonesia, was: “How to help Indonesian students to be independent learners and have good characters?” This question then raises an issue: “What kinds of knowledge, skills, and attitudes are needed by our students to survive in the 21st Century and beyond?” Earlier the author stated (Shadiq, 2016a) that to change and improve the quality of the teaching and learning process from a ‘typical’ or ‘traditional’ mathematics classroom to a more innovative one was not easy. Afurther issue was: “How to change real teaching practice?” Mathematics teachers need to experience ways that they will be expected to implement in their teaching. Isoda (2011) proposed a Problem Solving Approach (PSA) which consists of four steps: (1) problem posing, (2) independent solving, (3) comparison and discussion, and (4) summary and integration. In Indonesia, we can learn from Scientific Approach (SA) which covers five steps: (1) observing, (2) questioning, (3) collecting data or experimenting, (4) reasoning, and (5) communicating. In addition, Lowrie and Patahuddin (2015) proposed Experiences, Language, Pictures, Symbols, Application (ELPSA) as a lesson design framework for mathematics teaching and learning process. A problem is examined based on these three frameworks where at least 11 alternatives can be identified to solve it. The paper ends with some recommendations on how to improve Indonesian mathematics teaching.
The Ethnomathematics of Calculating Auspicious Days in Javanese Society as Mathematics Learning
Authors: Imswatama Aritsya , Setiadi David
Published: January 2021

The purpose of this ethnomatematics research is to describe the process of calculating auspicious days for Javanese wedding in Purworejo. This research is a descriptive research with a qualitative approach which used interviews to collect the data. The subject of this research was an individual who implemented the process of calculating auspicious days in Javanese society. The results show that the process of calculating auspicious days for Javanese wedding in Purworejo was an activity that could be possibly used as mathematics learning.
Improving Teachers ICT Application Competencies: A Case Study at Vocational High School in East Kalimantan Province
Authors: Ghozi Saiful , Yuniar Risty Jayanti , Respati Sara Wibawaning
Published: January 2021

Innovation in learning should be done in line with information and computer technology (ICT) literacy development for both students and teachers. One of the problems with learning using ICT is the differences in competency of teachers in a small city due to the lack of access to its development. This study is a qualitative research based on a community service activity to enhance ICT application competencies of mathematics teachers in vocational high school in Penajam Paser Utara (PPU) district, East Kalimantan Province(Indonesia), utilizing GeoGebra and Autograph™. This study consisted of five phases: (1) situation analysis, (2) training and workshops for GeoGebra and Autograph™ utilization, (3) implementation of lesson study (LS), (4) data analysis and presentation, and (5) discussion. The results of this study are: (1) students became more motivated to learn mathematics by using GeoGebra, (2) teachers found that GeoGebra can develop students’understanding of mathematics concepts easier, and (3) ICT competencies in teaching in vocational high school in PPU, especially in the utilization of GeoGebra and Autograph™, increased. The recommendation is that LS should be continued to improve the effectiveness of GeoGebra and Autograph™ utilization in other mathematics topics. A much larger studywould be needed to determine if the results of this research are due to the approach or due to the teachers’ enthusiasm, novelty effect or what is known as the Hawthorne Effect.
The Effectiveness of Web-based Learning Media of Polyhedral for Students Grade 8
Authors: Pebrianto Pebrianto , Septia Tika
Published: January 2021

Students’ difficulties in understanding polyhedral was one of the reasons for developing web-based learning media. This study is aimed at determining the effectiveness of webbased learning media for the students. The subjects of this study were students Grade 8 of SMPN 12 Mukomuko. An experimental method was adopted in this study and samples were divided into control and experimental groups. The control group was taught byconventional learning media while the experimental group was taught by web-based learning media. Pre-test and post-tests were administered to both groups. The findings showed that there is no significant mean difference between students’ outcomes on the pretest and post-tests taught by conventional learning media, but there was a significant mean difference between the students’ outcomes on the pre-test and post-tests taught with webbased learning media. The findings are encouraging and providing some promising directions, however, further study would be needed to determine if the results are due to the web-based approach or due to the teachers’ enthusiasm, the novelty effect known as the Hawthorne Effect.
Политические элиты как ведущий фактор цветных революций на постсоветском пространстве
Authors: Maksimova Elena N.
Published: January 2021

Цветные революции, представляющие собой формат кризисной динамики, имели существенные последствия для политических систем постсоветского пространства. Одним из ведущих факторов, определивших исход цветных революций в политических системах постсоветского пространства, стали политические элиты с присущими им качественными характеристиками и расстановкой в политическом пространстве. В рамках исследования выдвигается гипотеза о наличии у политических элит стран постсоветского пространства, в которых цветные революции состоялись, таких качеств как конфронтационность; отсутствие консенсуса в отношении реализации политического курса; противостояние идеологически полярных элитарных групп при неэффективности или слабой результативности механизмов транзита власти. В основу методологии исследования положен сравнительный метод, посредством которого сопоставляются характеристики политических элит в двух группах политических систем постсоветского пространства. В первую группу включены случаи, в которых в результате протестных акций произошла смена власти: Грузия (2003 г.), Украина (2004 г.), Киргизия (2005 г.), Молдова (2009 г.), Киргизия (2010 г.), Украина (2014 г.), Армения (2018 г.). Во вторую – случаи, в которых протестующие не добились смены власти: Беларусь (2006 г.), Армения (2008 г.), Беларусь (2010 г.), Россия (2011–2013 г.), Армения (2015 г.). Сравнение случаев позволило подтвердить выдвинутую гипотезу и прийти к выводам, при анализе первой группы, о наличии у политических элит и их взаимодействий таких характеристик как внутренний раскол, поляризация по идеологическому принципу, принципиально различное видение перспектив развития общества, конфронтация. Во второй группе – об отсутствии существенных расколов политических элит, слабой сплоченности оппозиционных сил – сторонников изменения режима власти, а также отсутствии широкой поддержки оппозиционных настроений в обществе и изменения внешнеполитического вектора развития. Данное исследование подчеркивает актуальность и необходимость дальнейшей разработки проблематики элит в политических системах постсоветского пространства.
OS IMPACTOS DAS FAKE NEWS RELIGIOSAS NA DEMOCRACIA BRASILEIRA CONTEMPORÂNEA
Authors: Sartori Alana , Hahn Noli Bernardo
Published: January 2021

Esta pesquisa possui como temática o fenômeno das fake news religiosas e seus impactos sobre o sistema democrático brasileiro. A pergunta central desta pesquisa como: quais os impactos das fake news de conteúdo religioso na democracia brasileira contemporânea? O objetivo central consiste em relacionar as influências das fake news religiosas com o sistema democrático do Brasil. A tese alcançada é que as fake news religiosas implicam em uma fragilização da democracia no sentido de que as decisões são embasadas por informações falsas que servem para alienar a população e garantir que, através de uma dominação ideológica, a manutenção dos interesses das elites, e isto remonta a um sistema aristocrático de fundo. Da mesma forma, percebe-se um retorno dos fundamentos religiosos para a tomada de decisão de governo, deixando em segundo plano os fundamentos do campo do direito, como os princípios constitucionais, garantias individuais e direitos humanos e, consequentemente, deixando em segundo plano fundamentos que tratam da proteção da vida e da dignidade humana. Quanto à metodologia, esta possui lógica dedutiva, com abordagem analítica e pesquisa em fontes indiretas. No que se refere a organização interna do trabalho, serão utilizados dois subtópicos no desenvolvimento da pesquisa, sendo que o primeiro analisa o fenômeno das fake news religiosas e o segundo relaciona suas influências sobre a democracia brasileira.
A RESPONSABILIZAÇÃO DECORRENTE DO TRATAMENTO DE DADOS PESSOAIS E O SISTEMA SANCIONATÓRIO DA LEI GERAL DE PROTEÇÃO DE DADOS PESSOAIS (“LGPD”)
Authors: Vilela Camila Maria de Moura , Lemos Christine Mattos Albiani
Published: January 2021

Este artigo pretende analisar a responsabilização administrativa e, o posicionamento do judiciário, perante a atuação dos agentes de tratamento de dados pessoais, denominados como controlador e operador. Destacando a problemática que trata das sanções administrativas que terão aplicabilidade apenas a partir de 1º de agosto de 2021. Para tanto, buscaremos analisar o papel da Autoridade Nacional de Proteção de Dados (“ANPD”) na efetivação das sanções administrativas e observar o tratamento, compartilhamento e fluxo de dados no Brasil, bem como as decisões judiciais proferidas até o momento devido a falhas de segurança da informação e danos aos titulares. O objetivo final das autoras é perquirir a forma de responsabilização decorrentes do tratamento de dados pessoais no país com a eficácia da LGPD.
Student Teachers with Mental Health Conditions Share Barriers to Success: A Case Study
Authors: Houdyshell Michael , Kratt Diane , Greene Jackie
Published: January 2021

Universities are trying to address student mental health needs through counseling centers and other outreach initiatives. However, do individual colleges know how to address the mental health concerns of their own students? Three faculty members in the College of Education at a university located in the southern United States posed two questions to find out what it is like for student teachers to live with a mental health condition, and what would support academic performance in the College. Seventeen undergraduate students who self-reported as having a mental health condition and were completing their senior year as student teachers volunteered to be interviewed for this case study. Three themes emerged after a reiterative process of reading and coding the interview responses. The three themes were barriers to success, student teaching as a positive experience, and lack of mental health awareness, education, and training for all. The discussion section includes recommendations for removing some barriers through more effective communication and increasing mental health literacy for faculty, staff, and students in the college.
KHAZANAH ARSIP SEBAGAI KOLEKSI MUSEUM: STUDI KASUS ARSIP MAKAM BELANDA PENELEH DI MUSEUM SIOLA SURABAYA
Authors: Raya Syah Irza , Salim Tamara Adriani
Published: January 2021

Museum Siola Surabaya has been keeping both artefact and paper-based colonial archives since 2015. What matters the most are to provide various sources of history of Surabaya, such as old furnitures, Surabaya topography maps, pictures of Surabaya mayors, city’s placard and certificate and Peneleh Dutch Cemetery archives. Before 2015, the archives were kept by Hygiene and Green Public Outdoor Service that has authority to manage cemetery at Surabaya. Unfortunately there are only limited pages of archives that are safe to be exhibited, such as cemetery map, the deceased biographies and cemetery register books. The archives kept as one
CROWDSOURCING: ARSIP, MEMORI KOLEKTIF, DAN ERA DIGITAL
Authors: Bawono Harry
Published: January 2021

Since 2012, National Archives of Indonesia has been developing National Archival Information System (SIKN) and National Archival Information Network (JIKN). Both platform provide easier access to archival records and in turn connect the local archives as their hubs. Crowdsourcing enriches the networks and increasing societal participation. This research had been conducted from January to April 2019 by using qualitative methods through interviews. This article argues that crowdsourcing is very helpful for adding archival collection.
KURASI DIGITAL SASTRA SIBER: PERSPEKTIF SASTRA KONVENSIONAL
Authors: Wanti Meilisa Arismaya
Published: January 2021

The last two decades signified the shift in the period of literary development. The emergence of various literary works that developed in the internet era succeeded in breaking the order of conventional literary publications which originally needed a layered process to be able to reach the readers. The rapid development of cyber literature produced many new literary works. Even though its quality is still being debated, it cannot eliminate its entity as a literary work and its role as a cultural product that must be preserved. That becomes a special aspect in this study, which aims to give consideration regarding preservation of cyber literary works in the form of digital curation of literature. This study considers the digital curation process of literature as the use of digital curation systems in the field of archives. This study uses descriptive qualitative methods to identify the urgency of digital curation of cyber literature. Furthermore, this analysis can be considered to produce collaboration between fields of literary, archival, and library science.
PENGARSIPAN OBAT TRADISIONAL SUKU BATAK KARO DI SUMATERA UTARA
Authors: Lavenia Christy , Dewi Nafa Febrianti Mutia
Published: January 2021

Traditional medicine in Indonesia has been used for thousands of years, biodiversity is an opportunity for the development of traditional medicine. One of the ethnic groups that still use and develop traditional medicine is the Batak Karo. Some traditional medicines of the Batak Karo ethnic group such as parem, tawar, and massage oil. The medicines are inherited from generation to generation so that the archive of traditional medicine is still very lacking, even its use in public is difficult. Community Archives (AK) can be empowered to do archiving with protection and preservation of traditional medicine. Documentation of traditional medicine using AK is evidence that these traditional medicines belong to the Karo Batak. In addition, well-managed traditional medicine can facilitate its publication through archival networks and traditional medicine is disseminated as traditional knowledge. Publication of traditional medicine is expected to be able to maintain the existence of traditional knowledge, especially traditional medicine from generation to generation.
Bridal Shower: Tren Perayaan Melepas Masa Lajang di Kalangan Perempuan di Kota Makassar
Authors: Astina Astina
Published: January 2021

Bridal shower is a celebration of letting go of single status adopted from European and American culture. This has become a new form of ceremony held by a friendship group, as the bridesmaids. It examines the adoption process of bridal shower, the process of the celebration itself, and the meaning of such celebration from both bridesmaids and bride to be.
This qualitative research was conducted in the capital city of Makassar, It involved 14 informant whose age between 21 and 26 years. They consist of eight bridesmaids who make and plan a bridal shower, four bride to be who have received a surprise bridal shower celebration, and two party planners who have five years experience in organizing such celebration. Data was collected using the combination of in-depth interview and observation, examining 18 cases of bridal shower celebration.
The study indicates that bridal shower is conducted as a moment of separation and as a form of support from bridesmaids to the bride to be who will be heading to a new life. The reasons behind the celebration of bridal shower includes the presence of group awareness, moment of letting go of friend, as a form of group support, following trend, and as a form of reciprosity. The celebration of bridal shower includes five stages. First, welcoming bride to be with a number of surprises. Second, embedding of attributes with the use of a crown to show the privileges of the bride to be and a shawl as a medium for writing funny messages that generally relate to the transfer of status and sexuality. Third, playing games in the form of questions with sanctions. Fourth, disclosing messages and impressions from the bridesmaid to the bride to be; Fifth, ending up eating together while reminiscing. Although each stage has its own purpose, they are all meant to make the bride to be happy. Bridal shower celebration is full of meanings, namely: as a status switch, as a medium for self reflection and introspection, and as a moment for friendship group existence. Bridesmaids support is very significant considering that the transition from one status to another and incoming new responsibilities both create fears to the bride to be. Thus, bridal shower celebrations become a transitional ritual at the critical moment because, on the one hand, bride to be has already "bound" by the acceptance of groom’s proposal; on the other hand, the status of marriage has not been grasped, a moment which Van Gennep (1960) termed as "rites de passage". A bridal shower celebration is a moment in which the bride to be stretches herself towards getting married. Bridal shower is also a medium for reflection and introspection, accompanied by the expression of messages of "farewell", discourses or advice to the bride to be. Bridal shower is also a moment to show the existence of a friendship group through uploading photos/videos of bridal shower celebration on social media and an event to display status, for both bridesmaids and brides to be.
Effects of Negative Emotions on Cognitive Schemas
Authors: Amzulescu Marius-Gabriel , Chiscop Andreea-Ionela , Marin Diana-Nicol , Lare Cristina , Popescu Andra-Maria
Published: January 2021

The present study investigates the effect of negative emotions (focusing on disappointment, sadness and regret) on cognitive schemas. The sample consist in students from the University of Bucharest (convenience groups). A univariate unifactorial experimental design was used, as the current study had one independent variable, negative emotions, and a dependent variable, cognitive schemas, which was measured with the Core Beliefs Questionnaire instrument. We applied T test for independent samples, using SPSS. The t test was statistically significant, t (45) = 2.57, p <0.05. The confidence interval (95%) for the difference between the averages is between 2.95 and 24.35. After applying the intervention, the evaluated sample (M = 43.17, SD = 29,074) showed a statistically significant difference compared to the control group (M = 29.52, SD = 11.257). The data collected support the main research hypothesis of the study, negative emotions can bring about changes in certain cognitive schemas by modifying, altering or disrupting them.
Influence of School Environment on the Academic Performance of Secondary School Students in Akoko South West Local Government Area of Ondo State
Authors: Segun Olowolabi
Published: January 2021

Being accepted as out of the four essential language skills in the language learning process, writing seems to be difficult for numerous EFL learners. This research is an endeavor to explore if learners can grow out of the writing difficulties with topic-based writing activity. 78 third-year students at the Faculty of Foreign Languages of Phan Thiet University in Phan Thiet City, Binh Thuan Province participated in the study. These students were in the two writing classes, one class was treated as the experimental group (EG) and the other as the control group (CG). Research findings exposed the benefits of topic-based writing activity in nurturing learners' writing motivation and enhancing their writing skill. Furthermore, this activity gave students good chances to widen their knowledge on the topic, enrich their emotion on disadvantaged people, and build a friendly learning environment outside the classroom. The necessity and usefulness of the application of topic-based writing activity was predominantly recognized among students.
REPRESENTASI PENDIDIKAN KARAKTER DALAM DAKWAH ISLAM DI MEDIA SOSIAL
Authors: Wael Abdi , Tinggapy Hasanudin , Rumata Abdul Rasyid , Tenriawali A. Yusdianti , Hajar Ibnu , Umanailo M Chairul Basrun
Published: January 2021

This study aims to determine how the representation of the value of character education in Islamic preaching on social media. This research is a qualitative descriptive study. The population in this study were videos of Islamic da'wah on YouTube social media. Data collection techniques in this study used documentation techniques and note-taking techniques. The data that has been collected is then analyzed based on representation theory to describe the representation of the value of character education contained in Islamic da'wah videos on Youtube social media. The results showed that the preaching of Islam on social media, especially Youtube, represented the value of character education in the form of honesty, tolerance, discipline, hard work, independence, love for the country, friendship, and responsibility. These themes are in accordance with the elements of character education formulated by Kemendiknas in 2010. The representation of the value of character education in Islamic preaching on social media can be used as a medium for teaching character education in schools.
Estrategias Didácticas por Competencias para la Enseñanza de la Biología en Estudiantes de Pregrado de la Especialidad de Biología y Química, Facultad de Educación – Universidad Nacional Mayor de San Marcos
Authors: Blanco Ayala Luis Fernando
Published: January 2021

El presente artículo tiene como objetivo principal determinar la influencia entre las variables: estrategias didácticas por competencia en la enseñanza de la biología en estudiantes de pregrado. Según la naturaleza y características de la investigación, estratégicamente se determinó como un estudio descriptivo, con enfoque cuantitativo, cuasi – experimental, ex – post – facto y explicativo. La muestra estuvo conformada por estudiantes de los semestres III al X, que cursan las diferentes asignaturas de biología, en la especialidad de Biología y Química, según el plan de estudios 2013 de la Facultad de Educación en la Universidad Nacional Mayor de San Marcos, los mismos que ascienden a 110 estudiantes. Se confeccionaron dos instrumentos, una para cada variable de estudio, con una confiabilidad de consistencia interna según el valor Coeficiente α Cronbach = 0,900 “excelente”. Para el tratamiento estadístico se utilizó el SPSS v.25. El estudio permitió confirmar que las Estrategias Didácticas por Competencias SÍ influyen significativamente en la enseñanza de la biología en estudiantes de pregrado de la especialidad de Biología y Química, Facultad de Educación, en la Universidad Nacional Mayor de San Marcos.
Investment Casting – Rapid Tooling Approach
Authors: M SIVADASAN , SINGH N. K. , SOOD ANOOP KUMAR
Published: January 2021

Investment casting is synonym with producing precision components and investment casters usually take up the order if the volume is huge enough. This is due to high and unjustifiable tooling cost and long lead times associated with the development of metal moulds for producing wax (sacrificial) patterns for customized single casting or small
quantity production. One of the feasible solutions is opt rapid tooling. In so- called rapid investment casting the most critical process will be building the investment shell and protecting it from thermal crack. This work investigates the shell crack and
counter. In this work pattern are modeled on rapid prototyping machine. During the ceramic shell preparation cracking is reported. Hence a remedy is explored as to control the thermal expansion of the pattern build material-acrylonitrile butadiene styrene (ABS) by using different build styles. Thermal expansion of five distinct styled ABS rapid samples were tested on Dilatometer. The investigation indicates the possibility of 63% reduction in thermal expansion of the pattern, which is very very encouraging.
Mechanical and Optical Properies of Poly Lactic Acid Modified Linear- Low Density Polyethylene / Low Density Polyethylene (Lldpe/Ldpe) Blend Blown Film
Authors: Singh Omveer , Upadhyaya Pradeep , Mishra T.k , Chand Navin
Published: January 2021

Poly lactic acid (PLA) is well known aliphatic poly-esters derived from corn and sugar beets, and degrades into nontoxic compounds in landfill. Melt blending of poly lactic acid and linear low density polyethylene (LLDPE) was performed in an effort to toughen polylactic acid. Melt blending of linear low density polyethylene (LLDPE) and polylactic Acid (PLA) and Low density poly ethylene (LDPE) were performed in a twin screw extruder with post extrusion blown film. The blend compositions were optimized by mechanical properties. On the basis of this, LLDPE 80 wt % LDPE 20 wt% and 1-4 wt% poly lactic acid (PLA) were found to be an optimum composition. The blends were characterized according to their mechanical and optical behavior. This blend may be used for packaging application.
Life Assessment of A Parabolic Spring Under Cyclic Stress & Cyclic Strain Loading Using Finite Element Method
Authors: Karthik J. P. , Chaitanya K. L. , Sasanka C. Tara
Published: January 2021

This study presents a fatigue life prediction based on finite element analysis under non constant amplitude proportional loading. Parabolic spring is the vital component in a vehicle suspension system, commonly used in trucks. It needs to have excellent fatigue life and recently, manufacturers rely on constant loading fatigue data. The objective of this study is to simulate the non constant amplitude proportional loading for the fatigue life analysis. The finite element method (FEM) was performed on the spring model to observe the distribution of stress and damage. The fatigue life simulation was performed and analyzed for materials AISI6150, SAE1045-595-QT. when using the loading sequences is predominantly tensile in the nature; the life of mounting in Goodman approach is more conservative. When the loading is predominantly tensile in nature, the life of the component in Morrow approach is more sensitive and is therefore recommended. It can be concluded that material SAE 1045-595-QT gives constantly higher life than material AISI6150for all loading conditions under both methods.
Design and Analysis of Dumped Body
Authors: Nayak B.Raghavendra Prasad , Sambaiah Ch.
Published: January 2021

The power driven three-wheeled road vehicles, typically used in Indian on a large scale, are important part of transportation system in major cities and also becoming increasingly popular in smaller towns. Some of these are designed for commercial use with little engineering consideration and are marked as product in great demand. The next two decades are likely to witness a sharp rise in the use of three-wheelers. The main compelling reasons for this are scarcity of energy resources and space. This paper analyses the static behavior of the body using Finite Element Modeling (FEM). The results obtained from FEM were studied and are compared with those of rigid body modeling. Conclusions were derived from the study and some suggestions are made to improve the performance of vehicle.
Design Optimization of Formula One Student Sports Car Upright Using Hypermesh
Authors: Prajwal Pathri Bhargav
Published: January 2021

This project mainly aims to develop a light weight upright to the formula one student sports car, where it can withstand the various loads that are coming on the uprights, and also to propose a material for the upright to decrease the weight of the upright, and also to propose a manufacturing procedure for the selected material, validation is carried out on the upright for the selected material on Hypermesh to check whether the selected design can withstand the loads coming on to it by applying various load paths in Hypermesh and manufacturing the design by using the RAPID PROTOTYPING technique
Design and Analysis of a Low Cost And Easy Operated Leg Mechanism For A Walking Robot
Authors: Babu G.V.Phani , Rao N.Amara Nageswara
Published: January 2021

In this paper, several walking machines and robots have been conceived, designed and built in the last twenty years to open new fields of application. Compared to wheeled vehicles walking machines show the advantage that they can act in highly unstructured terrain without having prepared this terrain in advance by streets or rails. Legged robots cross obstacles more easily; depend less on the surface conditions and quality and, in general, exhibit better adaptability. In this paper a numerical and experimental analyses of a pantograph-leg are presented. In particular, a suitable model of the leg has been analyzed and Kinematics and Dynamics have been solved. A parametric study has been also carried out in order to investigate the influence of some basic design parameters on its motion capabilities.