bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of conjugate convective heat transfer on temperature fields in thin walls that organize liquid layers of various orientations
Authors: Mitin K A , Kislitsyn S A , Berdnikov V S 
Published: December 2019

Abstract
Numerical studies of unsteady conjugate natural convective heat transfer in the model of a thin-walled fuel tank are carried out in the conjugate formulation. The fields of temperature in liquid and in solid walls of the tank are calculated. The evolution of convective flows and temperature fields after a sudden supply of heat to the base of the tank is investigated. Flat layers of liquid enclosed between flat walls of different orientations with inclination angles of 0, 30, 45, 60 and 90 degrees are considered. With the angle of inclination of 0 degrees the outer surface of the side walls is insulated. The outer surface of the lower wall heats up suddenly, the outer surface of the upper wall is isothermally cold. The system of equations of thermogravitation convection in the Boussinesq approximation in dimensionless form, written in terms of temperature, vector potential of the velocity field and velocity vortex, is solved. It is shown that an inhomogeneous temperature field is formed inside the solid walls of the finite thermal conductivity. The thermal conductivity of walls and conditions at the upper boundary of the liquid layer affect significantly the spatial form of convective fuel flows in fuel tanks and laws of conjugated natural convective heat exchange.
Analysis of heat transfer for gas flow in the multichannel plate heat exchanger depending on the gas Prandtl number
Authors: Slesareva E Y , Elistratov S L 
Published: December 2019

Abstract
The analysis of an experimental investigation of heat transfer for a gas flow into the multichannel plate heat exchanger depending on the gas Prandtl number is presented. The gas mixture with Prandtl number of 0.23 and 0.7 were used. It is shown that the design procedure by the method a local thermal balance possesses an adequate accuracy for verification design equation for Nusselt number, including definition of the conditions validity of the model of flow regime heat exchanger.
Integrated studies of convection and ice layer formation during cooling of the bottom of a rectangular cavity
Authors: Zolotukhina O S , Arbuzov V A , Berdnikov V S , Dubnishchev Yu N , Grishkov V A , Kislitsyn S A , Mitin K A 
Published: December 2019

Abstract
Experimental studies of the processes of crystallization of water as a liquid — simulator of melts with an inverse dependence of the density of melts on temperature — were carried out on two flat models. With the rapid cooling of the bottom of the cavity, substantial undercooling of the bottom layer of the liquid can be observed. The hydrodynamics in the process of growth of the ice layer at the bottom of the cavity was investigated. The effect of convective flow on the rate of crystallization and on the forms of the crystallization front has been studied. The evolution of the temperature field in the process of crystallization of water at the lower cooled boundary of the cavity is studied. It is shown that the evolution of temperature fields tracks the development stages of instability of the bottom layer of a liquid and the development of Rayleigh-Benard convection observed in a hydrodynamic experiment.
Identification of Biology Student’s Misconception in Makassar State University on Cell Biology by Applying Two-Tier MCQs Method
Authors: Hala Yusminah , Arifin Arifah Novia , Satar Suriyah , Saenab Sitti 
Published: December 2019

AbstractThis study aims to know the level of understanding of UNM student’s experiencing misconceptions, understand the concept and do not understand the concept about cell biology using Two-Tier MCQs method. This research includes descriptive research. In this study, the Two-Tier MCQs method to identify student’s misconceptions. Population in this research is all student of study program of biology of UNM class 2015. Samples in this research as many as 20 people who tried randomly. Instruments used to test Two-Tier MCQs and interview methods to determine the causes of misconceptions. The result of data analysis shows that the highest misconception is in the mate rial structure and function of mitochondria and the lowest is in the cell cycle material.
The effect of annealing on ZnO:Al thin film growth on preparatory glass substrate by dc magnetron sputtering
Authors: Sugianto S , Astuti B , Firmahaya N A , Aryanto D , Isnaeni  
Published: December 2019

Abstract
Al doped ZnO (or ZnO:Al) thin films were deposited onto a preparatory glass substrate using dc magnetron sputtering. The effect of annealing time was 0, 30 and 50 minutes onto the structural, morphological, optical properties and electrical properties of the ZnO:Al films have been investigated. Thin films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL) and I-V measurements, respectively. XRD measurement showed that each sample had an amorphous structure. The morphology of the film was more homogeneous when annealed in 50 minutes. PL characterization showed two emission peaks, namely blue emissions at a wavelength of 447 nm and red emissions at a wavelength of 752 nm. ZnO:Al film with an annealing time of 50 minutes had a higher blue emission PL intensity than other films.
Control System based Photocell, Timer and Temperature Sensor
Authors: Sumual H. , Seke F R 
Published: December 2019

Abstract
The development of automation has penetrated in various fields including electro. Photocell; Timers; and Temperature Sensors-based control systems (FTS) is systems with performance that can save work time and simplify work through the process of automation. This study aims was to make innovations in practical equipment that can facilitate the learning process of controlling techniques, namely designing FTS-based controller systems. The research method used developing method of the ADDIE model. The research was conducted at the Unima Electrical Engineering Education Laboratory of the Faculty Engineering. The results of the study show that the design of the FTS control system can be used and applied in daily life, such as the needs in the field of agriculture and fisheries, it can also be used as an integrated laboratory learning media in electrical engineering education. This FTS-based controller system design can also improve the understanding of electrical engineering students about controlling techniques.
Foundation of Mathematics Courses Using Virtual Learning
Authors: Masriyah  , Fardah D K , Wintarti A 
Published: December 2019

Abstract
This study aims to describe the learning outcomes and students’ responses after joining in the Foundation of Mathematics courses using virtual learning. The research subjects were Mathematics students who programed the Foundation of Mathematics which consisted of 31 people. The method of data collection was carried out by test methods and questionnaires. This learning was said to be successful if the learning outcomes of students at least 70% get A. A-, B+, or B grades or at least 70% the scores obtained by students was more than or equal to 70, and students’ responses after joining in Foundation of Mathematics courses using virtual learning is positive category (the percentage of students positive responses was more than 70%). Based on the results of data analysis it can be stated that 90.03% of the final grades of students joining in the Foundation of Mathematics courses are B, B+, A- or A, and the percentage of positive responses of students after joining in Foundation of Mathematics courses was 80.0%. Thus it can be concluded that Foundation of Mathematics courses using virtual learning has been successful.
Measuring the capability level of IT governance: a research study of COBIT 5 at Universitas Negeri Gorontalo
Authors: Katili M R , Pateda V , Djafri M G , Amali L N 
Published: December 2019

Abstract
Nowadays, Information Technology Governance (ITG) has been massively performed in various organizations. ITG itself reflects the existence of management and utilization of the IT activities to the achievement of the goals of the organization. Nevertheless, the evaluation of ITG at the Universitas Negeri Gorontalo (UNG) has still not been carried out systematically. To resolve the issue of evaluation efforts required to use the COBIT 5. The purpose of this research is to find out IT governance at UNG and to measure the extent of the capability of ITG at UNG. The approach of this research is descriptive by using quantitative and qualitative data. The results of this study indicate that the level of IT management capabilities at UNG is level 3 (Enablished Process), which means that the IT management process has been carried out following a defined standard process and enabling the achievement of process results. Based on the results obtained, recommended corrective steps can be taken by the organization management so that the level of capability of the DSS and MEA processes can be increased so that IT utilization in UNG becomes more optimal to avoid the risk of failure from IT implementation.
Mobile-Based Media as the Solution in Teaching and Learning Listening Skill
Authors: Elfiona Elsa , Zaim M , Refnaldi  
Published: December 2019

AbstractLearning listening skill is more challenging for English as a foreign language (EFL) students. Based on an investigation at several high schools in Padang, the existence of listening skill in English subject is almost neglected in teaching and learning process because of many reasons such as the limited media and less opportunity to practice listening. Teachers are difficult to prepare appropriate media to teach listening while students are difficult to find out the appropriate listening materials to practice. Innovation in using media is needed in this era because people use technology such as the computer, smartphone, internet in life. This paper uses library research method that aims to describe such as solution by utilizing mobile phone in teaching and learning listening skill considering almost all students already had their own Smartphone. Based on the study, there are several benefits in using technology especially mobile-based learning in teaching and learning process; increase teachers creativity in designing teaching materials and media, increases students’ motivation in learning, mobility, accessibility, and excellent potential for providing students with the learning materials whenever and wherever. In summary, using mobile-based learning can be a solution to solve several problems in teaching and learning listening.
Development of Reading Materials for Multicultural Education With the Topic of Kasada Tradition in Tengger Community (Study of Ethnography at the Bromo-Tengger-Semeru National Park, Jawa Timur)
Authors: Hadi N 
Published: December 2019

Abstract
A very prominent feature of the Tengger community in carrying out their social activities and customs is the attitude of togetherness which is based on harmony and peace. In carrying out their various sacred ceremonies, the spirit of togetherness is crucial to them. Especially in the Kasada ceremony, they enunciate sincerity, joy, mutual cooperation, sacrifice, and other significant attitudes and behaviors indicating their level of dignity as social beings. The ceremony was held by involving all members of the community, men and women, from the elders to the children. It is believed that the Kasada ceremony is an ancestral heritage, in which there are many important values, and is abundant with noble aspects of everyday social life, especially intertwined with their original religion. The approach used in this study is the qualitative-ethnographic model of Spradley The results show: (1)The Kasada ceremonial tradition is a form of ecological adaptation. Over the years, this community has held the ritual, with the intention of fulfilling many interests, particularly maintaining their existence as mountain farmers. (2)This ceremony is a form of local wisdom in answering limited natural challenges, by cultivating the ability and intelligence in preserving nature and integrated social life. (3) Values in the Kasada ceremony tradition include: willing to sacrifice, help each other, implement mutual cooperation, persevere, respect the work of others, balance the past and the future, love for the preservation of nature, and implement social responsibility; (4) Decided sanctions for Kasada ceremony offenders: there are no legal sanctions, but an anomaly is attached to those who avoid the ritual, that actually strengthens their social integration. This happened to some Tengger people who had embraced State religions.
Implementation of Problem-Based Learning to Improve Critical Thinking Skills in Entrepreneurs Learning
Authors: Hasanah  , Malik Muh Nasir 
Published: December 2019

Abstract
Critical thinking skill is highly required to face the industrial era 4.0 in the 21st century that is integrated into the knowledge, skills and attitudes and mastery of ICT. The purpose of this study was to see the effect of applying Problem Based Learning to improve critical thinking skills in Entrepreneurship learning. This research employed the quasi-experimental method to compare the results of the experimental class treatment with the control class. The design used in this study was the non-equivalent control group design. The sample of this study was students of the Electronics Engineering Education study program at the Faculty of Engineering, Makassar State University who were registered in the entrepreneurship course. The results showed that: (1) the application of Problem Based Learning on Entrepreneurship Learning could significantly improve critical thinking skills, and (2) the application of Problem Based Learning could improve student learning activities.
Reorganizing the Curriculum of the Study Programs of the Electrical Engineering Fields in Universitas Negeri Padang as Its Eminent Policy
Authors: Mukhaiyar R , Mukhaiyar  , Myori DE , Hambali  , Utari N 
Published: December 2019

Abstract
Based on the fact, there are often standard inequalities and curriculum needs made, provided, and used for D3 and D4 study programs. For example, the Electrical Series courses as basic skills courses for student, even each program lectured by the same person, the understanding of each study program’s students on this subject is very different. The initial assumption, this occurs because misunderstanding of each education level with the differences need between vocation and majors courses. So the material given to D3 and D4 is unbalanced. The initial assumption was that the lecturer teams of each study program were too deco-defective towards the category of applied electrical engineering graduation that had to work in the industry, and electrical engineering education which had to become a teacher. For instance, electrical circuit subjects, this course is a basic knowledge in electrical engineering, so it must be shared and delivered to students is the same scientific material. Therefore, this research is very important to be carried out to unite the perceptions and perspectives of the electrical engineering department - UNP along with the lecturer council for the ideal curriculum for a department of educational institutions with the origin of formation such as UNP.
The Effect of Active Learning in the form of Scientific Approach with the Use of Students Worksheet Based on Problem Based Learning (PBL) on Students’ Biological Knowledge
Authors: Laili F , Lufri L 
Published: December 2019

Abstract
The effect of Active Learning in the form of Scientific approach with the use of students worksheet based on Problem Based Learning on Biological students knowledge. This kind of research is quasi-experimental by using research design; Randomized Control Posted only design. The population used here is students of X IPA Senior High School. The technique used is Purpose sampling and Class X IPA 4 act as experimental class whereas X IPA 3 as control class. Instrument that is conducted here is Objective and Essay. Data analysis by using T-Test. The result shows that there is significant differentiation between both class where experimental class knowledge is higher than another one. Average of experimental class students score is 86.74 and another class is 82.00. Based on the result of hypothesis test significant (0.008) < 0.05 so H1 was accepted. The conclusion of this research is Active Learning in the form of Scientific approach with the use of students worksheet based on Problem Based Learning on student enable them to improve their Biological knowledge.
Scientific Literacy of Secondary School Students’ Related the Global Warming Subject
Authors: Rusilowati A , Supriyadi  , Dwijananti P , Khabibah E A N 
Published: December 2019

Abstract
The purposes of this research to describe of scientific literacy of secondary school students related materials of global warming. This research used quantitative descriptive method. The sample research was seventh grade students of secodary school at Central Java, Indonesia. The research instrument used a scientific literacy test in the form of a description that includes four scientific literacy categories that are science as the body of knowledge, science as a way of investigating, science as a way of thinking, and interaction between science, environment, technology, and society. The results showed that the average scientific literacy of students in all categories was 43.39%. Scientific literacy of students in each category obtained a percentage of ≤54% with very less criteria for the science category as a body of knowledge, a way to investigate and a way of thinking. The category of interactions between science, environment, technology, and society is less criteria with average percentage 57.25%. This shows that the scientific literacy skills of SMP and MTs students are still low.
Junior High School Teachers’ Problems in Digitally Infected Clime: The ICT Utilization Sensibility
Authors: Monia F.A. , Hanafi I , Marsidin S. , Darmansyah  
Published: December 2019

Abstract
Nowadays, the digital era which is known as 4.0 era began to endemic the world of education. Teachers as an actors of education get a challenge to adapt with this development. The purpose of this study is to describe the teachers’ problems in using ICT in junior high schools in Bangkinang City. The type of research is descriptive research. The subjects of this study were all 87 teachers in SMP Negeri 1 Bangkinang City. Based on the results of the research, it can be explained that the problems faced by teachers in the use of ICT are 1) the mastery of teachers in the use of ICT is still in the low category, 2) there is no regulations for teachers to implement ICT in the teaching and learning process 3) the lack of training activities to increase the teachers’ ability to use ICT. The alternative solution that can be done is periodically implementing ICT training activities and increasing ICT facilities for teachers.
Educating and mentoring of broiler intensification programs through KKN-PPM activities for the community of Talise Village, Likupang Barat Subdistrict, North Minahasa Regency
Authors: Mege R A , Paus J R , Mantiri J , Maramis A A 
Published: December 2019

Abstract
A community service activity, Kuliah Kerja Nyata – Pembelajaran Pemberdayaan Masyarakat (KKN PPM) in Talise Village, Likupang Barat District, North Minahasa Regency, has been well implemented. The activities aim to provide education and assistance to the community through the application of intensified chicken livestock technology. The target community groups are groups of school-age children (junior high school students and school dropouts) and adult groups. The method used for groups of adults is a combination of methods of applying science and appropriate technology with the adult learning approach (Andragogics), while for groups of school age children using the Scientific Learning approach by utilizing the school yard as a laboratory and learning resource for students. The results achieved are, the community and students get knowledge and skills about: 1) technology for processing alternative animal feed ingredients; and 2) livestock health control technology. Through this activity it has also been facilitated efforts to meet the needs of animal food consumption and increase family economic income.
Effectiveness of Realia Media: A Case Study in SMP Negeri 1 Likupang Barat as a Partner in KKN-PPM Program
Authors: Maramis A A , Mege R A , Paus J R , Mantiri J 
Published: December 2019

Abstract
Communities in Talise Island face various problems, indeed children which has an impact on the high level of school dropouts. Children after school must help the work of parents who generally work as traditional farmers, breeder, or fishermen. Other factors that influence the dropout rate are the learning process and infrastructure which can be said is below national standards. To help alleviate the problems, an activity called Kuliah Kerja Nyata – Pembelajaran Pemberdayaan Masyarakat (KKN-PPM) has been carried out to reduce the number of school dropouts. The real steps taken are to optimize the utilization of existing infrastructure of SMP Negeri 1 Likungan Barat which has a land area of about 2 hectares for livestock farming and revitalize the learning process in schools by applying learning media suitable for the situation and conditions. Through this KKN-PPM activity, college students from the educational study program have implemented media realia in the learning process. Realia media are assistive devices or real objects that are used as teaching materials that can be presented in classrooms or observed directly according to their location outside the classroom. This article will describe the effectiveness of using realia media in SMP Negeri 1 Likupang Barat.
Development of Natural Disaster Mitigation Teaching Materials to Improve Understanding of Disasters
Authors: Alfi M , Darsiharjo  , Maryani E 
Published: December 2019

Abstract
This study has three objectives (1) Developing natural disaster mitigation teaching materials; (2) knowing student learning outcomes when using instructional materials that have been developed (3) Knowing student responses to instructional materials that have been developed. The research method used is Research and Development (R & D). This research was conducted at high school (SMAN) 3 Pariaman to retrieve needs data, test products, and experimental teaching materials. The class sampling technique uses a cluster random sampling technique. The data collection technique is through questionnaires and tests. The results of this study are to produce products in the form of natural disaster mitigation teaching materials according to the needs of students and teachers and have been validated by experts and tested. The experimental results of natural disaster mitigation teaching materials indicate that teaching materials are used effectively in learning. The results of this study are validations consisting of 4.1 instructional review values and 4.0 technical review values, so the results of developed product validation are valid. Based on the analysis of learning outcomes, 72% of students have high category values. This study concluded that the development of teaching materials is valid and can be used as teaching material.