bluuebunny/crossref_metadata_2025 huggingface dataset:
Anomalous Josephson current in quantum anomalous Hall insulator-based superconducting junctions with a domain wall structure*
Authors: Yan Qing , Zhou Yan-Feng , Sun Qing-Feng
Published: July 2020

We theoretically study the Josephson effect in a quantum anomalous Hall insulator (QAHI) nanoribbon with a domain wall structure and covered by the superconductor. The anomalous Josephson current, the nonzero supercurrent at the zero superconducting phase difference, appears with the nonzero magnetization and the suitable azimuth angle of the domain wall. Dependent on the configuration of the domain wall, the anomalous current peaks in the Bloch type but disappears in the Néel type because the y-component of magnetization is necessary to break symmetry to arouse the anomalous current. The phase shift of the anomalous current is tunable by the magnetization, the azimuth angle, or the thickness of the domain wall. By introducing a bare QAHI region in the middle of the junction which is not covered by the superconductor, the anomalous Josephson effect is enhanced such that the phase shift can exceed π. Thus, a continuous change between 0 and π junctions is realized via regulating the configuration of the domain wall or the magnetization strength. As long as an s-wave superconductor is placed on the top of the QAHI with a domain wall structure, this proposal can be experimentally fabricated and useful for the phase battery or superconducting quantum bit.
Plasma simulation to analyze velocity distribution characteristics of pseudospark-sourced electron beam*
Authors: Li Hai-Long , Hu Chen-Fei , Xu Che , Yin Yong , Wang Bin , Meng Lin , Wang Mao-Yan
Published: July 2020

Pseudospark-sourced electron beam is a promising candidate for driving vacuum electronic devices to generate millimeter wave and terahertz wave radiation as it has a very high combined beam current density. However, the inherent velocity spread of the beam, which is difficult to measure in experiment, has a great influence on the operating frequency and efficiency of the vacuum electronic device. In this paper, the velocity distribution characteristics of the electron beam produced by a single-gap hollow cathode electron gun are numerically studied and a three-dimensional kinetic plasma simulation model of a single-gap hollow cathode electron gun is built by using particle in cell and Monte Carlo collision methods in Vorpal. Based on the simulation model, the time-dependent evolution of the plasma formation inside the hollow cathode and electron beam generation process are observed. It is demonstrated that the pseudospark-sourced electron beam has a relatively large velocity spread. The time-dependent velocity distribution of the beam is analyzed, and the dependence of the beam velocity distribution under various operating conditions such as anode–cathode potential difference, gas pressure, and cathode aperture size are also studied.
Charge transfer in low-energy collisions of Be3+ and B4+ ions with He*
Authors: Wang Kun , Qu Yi-Zhi , Liu Chun-Hua , Liu Ling , Wu Yong , Liebermann H P , Buenker Robert J.
Published: July 2020

The nonradiative charge-transfer processes of Be3+(1s)/B4+(1s) colliding with He(1s2) are investigated by the quantum-mechanical molecular orbital close-coupling (QMOCC) method from 10 eV/u to 1800 eV/u. Total and state-selective cross sections are obtained and compared with other results available. Although the incident ions have the same number of electrons and collide with the same target, their cross sections are different due to the differences in molecular structure. For Be3+(1s) + He(1s2), only single-electron-capture (SEC) states are important and the total cross sections have a broad maximum around E = 150 eV/u. While for B4+(1s) + He(1s2), both the SEC and double-electron-capture (DEC) processes are important, and the total SEC and DEC cross sections decrease rapidly with the energy decreasing.
Water on surfaces from first-principles molecular dynamics*
Authors: You Peiwei , Xu Jiyu , Zhang Cui , Meng Sheng
Published: July 2020

Water is ubiquitous and so is its presence in the proximity of surfaces. To determine and control the properties of interfacial water molecules at nanoscale is essential for its successful applications in environmental and energy-related fields. It is very challenging to explore the atomic structure and electronic properties of water under various conditions, especially at the surfaces. Here we review recent progress and open challenges in describing physicochemical properties of water on surfaces for solar water splitting, water corrosion, and desalination using first-principles approaches, and highlight the key role of these methods in understanding the complex electronic and dynamic interplay between water and surfaces. We aim at showing the importance of unraveling fundamental mechanisms and providing physical insights into the behavior of water on surfaces, in order to pave the way to water-related material design.
The Identification of Morphological and Anatomical Structures of Pluchea indica
Authors: Susetyarini Eko , Wahyono Poncojari , Latifa Roimil , Nurrohman Endrik
Published: July 2020

This current research aimed at identifying the morphological and anatomical structures of Pluchea indica, specifically in root, stem, leaf, and flower of its. A descriptive approach was applied to this research and was conducted at Biology Laboratory of University of Muhammadiyah Malang from July to August 2019. The identification of morphological structure, furthermore, was focused on the characteristics of root, stem, leaf, and flower organ. In addition, the identification of anatomical structure was through a transverse incision in each organ by means of fresh preparation, safranin coloration, and Scanning Electron Microscope (SEM). The collected data were analyzed descriptively and quantitatively. The identification of morphological structure in the organs was referred to a book entitled Morfologi Tumbuhan (Plant Morphology) by Tjitrosoepomo (2007); while the anatomical identification was referring to a book of Anatomi Tumbuhan (Plant Anatomy) by Fahn (1995). The result of the identification has indicated that Pluchea indica possesses the following morphological characteristics: 1) the leaves are light green, with trichomes in their upper and lower sides; 2) the length of branches signifies 1 cm in average, located at crisscrossing points and in a form of abovatus; 3) the tip of the leaves (apex folli) is sharp-formed (acanthus), with serrated pattern at the edge of the leaves (margo folli); 3) the base of the leaves (basic folli) is blunted (obsitus) and the structure of the leaf bones (nervatio) is pinnate-formed (penninervis), with oval-shaped leaf blades and parchment-like intervenium; and 4) the stem is in a round form with monopodial branches, taproot, and capitulum inflorescent. Further, with the reference to the anatomical structure of the stem and root, there have been found epidermal tissue, cortex, xylem and phloem, sclerenchyma, and pith. The modification on stomatal epidermis is in a form of kidney with two buffer cells of 13.6 μm in length and 9.82μm in width. Meanwhile, the porous length and width consecutively signify 9.02 μm and 1.32 μm, with glandular trichomes of 551 μm long in average and 39.6 μm wide in average.
Synthesis of Eichhornia crassipes Biochar: Sustainable Efficient Adsorbent for Reducing Cr (VI) Metal Ion
Authors: Mulyatun
Published: July 2020

Chromium (Cr) is the most widely used metal in industrial activities and is the most toxic heavy metal ion found in waters. Utilization of Eichhornia crassipes as a Sustainable Efficient Adsorbent of heavy metal Cr (VI) is one of the innovations and alternative technologies that are very beneficial for society and the environment. The synthesis of Eichhornia crassipes biochar in this study employed the hydrothermal method. Hydrothermal temperature variations used in biochar synthesis were 220°C/240°C/260°C/280°C. Eichhornia penetrated biochar with H2O2 to the Cr (VI) metal adsorption capacity. The synthesis of biochar Eichhornia crassipes has the characteristics of combining hydroxyl, carbonyl, carboxyl, and amine functional groups. The surface morphology in the Eichhornia crassipes biochar modification term is rougher and irregular compared to Eichhornia crassipes biochar without modification. The modification of Eichhornia crassipes biochar using H2O2showed an increase in oxygen composition in terms of modified biochar so that it increased the adsorption capacity of Cr (VI) metal ion. The best value of adsorption capacity in Eichhornia crassipes biochar terms modified with a hydrothermal temperature of 240°C that is equal to 30.2156 mg/g.
Zeolite based Geopolymer from Biomass: a Sustainable Adsorbent for Water Softener
Authors: Udaibah Wirda
Published: July 2020

Water quality in several areas in Semarang, especially in Tugu sub-district, is still very low and unsuitable for drinking. Ground water contaminated with Ca2+and Mg2+ions which is commonly known as hard water. This study aims to examine the potential of zeolite-based geopolymer adsorbents, materials which have a zeolite-like structure but are basically geopolymers. Synthesis of zeolite based geopolymers from rice husk ash, kaolin and NaOH activators has been successfully carried out by the sol gel method. Three-dimensional networks have been formed from Silica (SiO2) and Alumina (Al2O3). Activator solution, NaOH, with variations in concentrations of 4 M (Geopolymer 4), 8 M (Geopolymer 8) and 12M (Geopolymer 12) gives significant differences. As the higher the concentration of activator solution, the more silica and alumina dissolved so that the geopolymer becomes amorphous. These results are consistent with XRD and FTIR data. Geopolymer 12 has an adsorption capacity of 97.4% is the best adsorbent in adsorbing Ca2+and Mg2+metal ions with operating conditions at 40°C for 60 minutes. This shows that there is a close relationship between synthesis methods, structural characterization and geopolymer adsorption activities. The higher concentration of NaOH gives amorphous geopolymers. NaOH will activate the silica and alumina surfaces on the geopolymer, making it easier for adsorbents to absorb and interact with the adsorbate molecules, namely Ca2+ions and Mg2+ions.
The Development Stoiciometry Module Based On POGIL and Unity of Sciences
Authors: Zammi M , Hakim F
Published: July 2020

The development of POGIL-based chemistry modules and the unity of science carried out because there is a dichotomy of science among academics, learning media is not yet loaded with UOS and accommodates student activities, and learning media are not in accordance with student learning styles. Therefore the purpose of this study is to produce a POGIL-based module and loaded with UOS. The development model used is a 4-D developed by Thiagarajan provided to define, design, develop and disseminate. The developed module is validated by material and media experts. The results of the validation of material experts 90.62% are valid categories and the results of the validation of media experts are 88.75% valid categories. The module openness test results from an average of 87.68%, namely Independent / Free The results of student responses to the use of modules amounted to 86.72% with a very good category. Thus POGIL and UOS-based chemistry modules can be used as student learning resources.
Determination of Granting Appropriateness Credit at “Daruzzakah Rensing” Cooperative Using the Support Vector Machine (SVM) Algorithm
Authors: Yahya  , Nurhidayati
Published: July 2020

Credit is the main product of savings and loan cooperatives to increase profitability. The greater the credit issued, the greater the benefits obtained by cooperatives. Each cooperative will package credit products in such a way as to attract the attention of every customer. However, cooperatives can find problems in the process of lending, such as the “Daruzzakah Rensing” Cooperative located in “Desa Rensing, Kecamatan Sakra Barat, Lombok Timur-NTB-Indonesia”. The main products of the Cooperative “Daruzzakah Rensing” are savings and loans. In distributing credit, the cooperative always decides based on statistical data. This data is sometimes not useful if the supporting methods used to predict and classify the data are not appropriate. Therefore, this research requires a method that can classify and predict problematic and non-problematic customers. To answer this question, using the SVM (Support Vector Machine) algorithm to find out the level of accuracy in analyzing creditworthiness proposed by prospective debtors. The SVM algorithm is used to predict, classify, evaluate, and analyze credit. From the results of data processing carried out using the SVM algorithm (Support Vector Machine), it can be categorized as an excellent method, with an accuracy of 90.42% and AUC at 0.957. Accuracy of 90.42% means the SVM algorithm can provide decisions about feasible or not feasible in granting credit to customers who apply for loans.
Implementation Internet of Things (IoTs) to Monitoring Temperature Oven Tobacco System Towards 4.0 Industry
Authors: Gunawan Indra , Wasil Muhammad
Published: July 2020

Tobacco is planted by the farmers in dry season through some process such as seeding, planting and drying. In drying process, the farmers use traditional technology named oven. When checking the temperature conditions of the tobacco, the farmers still use an estimation to measure the heat temperature of combustion stove. Base on those problems, the farmer need innovation technology which is used to make them easier to keep the stability of the temperature in the oven area in order to protect the quality of tobacco. “Internet of things” (IOTs) is provided to answer the farmers’ problem. By utilizing the internet of things (IOTs) in a Smartphone, this application will make the farmers easier to check the temperature conditions automatically to the temperature rises excessively without standing by in the oven or burning location. The application of IOTS with the data accuracy rate of ± 96%,%, can be said that it works well, although there are still shortcomings in the targets planned but the development program will be added. Hopefully, this application will help the farmer to be more ready to face 4.0 industry in the field of agriculture.
The Development Of Augmented Reality For Hardware Introduction For SDU Hamzanwadi Students
Authors: Kholisho Yosi Nur , Marfuatun  , Lutfi Samsul
Published: July 2020

The study conducted on the Primary School (SDU) Hamzanwadi with the subject focused on the main informatics on introduction of hardware. Here, the teacher only explained by drawing on the blackboard without being equipped with learning media. The formulation of the problems were: How is the learning media design process in the form of Augmented Reality, What result from product validation both from media experts and material experts, What is the response of users, namely SDU students Hamzanwadi. Research and Development methods. Based on the results of the validation of media experts in the form of Augmented Reality hardware recognition got an average value of a percentage of 93.16 included in category 4 that is “very feasible”, the results of expert validation the material got an average value of a percentage of 94.5 included in category 4 that is “very feasible”. Based on the results of interviews conducted to 5 students, they found it that students enjoyed learning media products in the form of Augmented Reality. The results got show that there are positive responses got from students related to learning media products in the form of Augmented Reality.
The Development of Indonesian Language Learning Model through Puppet Creation Media
Authors: Muttaqin Zainul , Fakihuddin Lalu , Taufiq Muh.
Published: July 2020

The aim of this research is to analyse the development model in learning Indonesian language through puppet creation media in fifth-grade students of elementary school NWRekat Lauk.The research is research and development. It orients the development to produce and test a product of language learning media through puppet creation. Direct interviews conducted the research step. The development steps were product design, expert validation, and testing. The learning media by using puppet creation which developed and used based on the media expert which categorized “good enough” because it was between 26,04<x<33,96 with a total score was 27 and the mean was 2,7. It categorized the material expert “good” between 30,6 <x<16,8 with a total score was 32 and the mean was 27. The learning result of the highest score was 85, the lowest score 55, the number of minimum total criteria was 60, and the percentage was 88,23%. The students’ learning response were excellent students who answered “no” showed which no” with the mean percentage of “yes” was “97,05%. And “No” were 2,95 %. Thus, media of learning by using puppet creation can influence the students’ learning outcomes.
Maximizing Computer Based Test (CBT) Teslet Model for Education Quality Mapping
Authors: Wirasasmita Rasyid Hardi , Alpian Mimi , Hayati Nila
Published: July 2020

Mapping the quality of education is one step that can be done to anticipate and overcome problems in the world of education. Basically, the mapping of the quality of education is aimed at equitable distribution of education. To achieve these objectives, it is necessary to maximize the development of three aspects of quality consisting of inputs, processes and outputs. The process as an important part of the responsibility of teachers has an extraordinary role in gathering various information or data needed to determine the quality or the quality of education at a particular institution or school. Therefore, one solution that can be taken which is to develop a test model based on computer, commonly known as Computer Based Testing (CBT). CBT is a form of software that can be developed using a computer. The development of the CBT in question must also be accompanied by a quality problem model so that the policies taken can be effective. The test model testlet is an alternative that can be maximized considering that this test is a collaboration between the form of problem and multiple-choice questions with the level of difficulty of questions that are tied. By using this testlet, the teacher can not only obtain information about student competencies, but can also obtain information about individual characteristics. In addition, the use of this test model will make it easier for governments and educators to conduct quality mapping because it is more effective and efficient
Application of online conseling services in facing competition asean economic community
Authors: Mahyatun Baiq , Muhsifuddin M , Syofiyanti Dessy
Published: July 2020

MEA in Indonesia in 2015 has been in the spotlight and has generated a myriad of debates among the public. MEA itself is one form of realization of ASEAN’s vision to create a single market and production base that is stable, prosperous, and competitive. This, of course, greatly affects all systems in Indonesia, including the education that participates in receiving the impact of the AEC. Counseling as one part of education, of course contributed greatly to the policy. The development of increasingly sophisticated knowledge and technology in the MEA, does not necessarily also have a positive impact in the wider community, so we often encounter a growing number of social problems that develop in modern society. That is why counselors as an educator are felt to need to develop creativity in providing services to prevent and overcome problems that will arise in the MEA. One of the efforts that can be taken is using online counseling services. Various forms of counseling services (one of them online counseling) aims to develop all the potential possessed by the children of the nation, so as not to be left behind by the competition that arises in the MEA. Referring to this explanation, the counselor as a counseling service officer, is considered important to develop a variety of counseling service strategies in dealing with the MEA.
Visualization Of The Traditional House Architecture Of Belek Sembalun Lawang Village By Using 3D Animation
Authors: Mahpuz  , Bahtiar Hariman
Published: July 2020

the development of information technology is currently progressing, multimedia is one of the right way to facilitate the delivery of information in the form of audiovisual form of 3D animation. Utilizing multimedia to convey information is as one way in an effort to publish the traditional architecture of the Lombok area, especially the traditional house of Belek Sembalun Lawang Village in the form of 3D animation using blender software that can be used as a medium of learning. Belek Village is a large village/village parent which was first created consisting of seven houses that are the forerunner of Sembalun Village. By using 3D animation is expected to provide solutions and alternatives in the process of introduction and learning about the traditional architecture of Lombok traditional house especially the traditional house of Belek Village, so that in the process of learning and recognition becomes more unique and interesting, as well as learning media and introduction of traditional house of Belek Village, 3D animation can also provide an advantage in publication efforts and documentation of history and culture of Sembalun Lawang Villag.
Website as Foundation Information Media under the auspices of Nahdlatul Wathan
Authors: Sudianto Aris , Sugiantara Jagat
Published: July 2020

The Nahdlatul Wathan organization is one of the largest and most widespread organizations in West Nusa Tenggara, especially in East Lombok. The number of foundations under the Nahdlatul Wathan organization has increased rapidly from time to time. But parties from the organization’s Nahdaltul Wathan were still having difficulty processing data and getting the latest information about the number and conditions of each foundation under the auspices of Nahdlatul Wathan. This is because the management of the Nahdalatul Wathan organization does not yet have a system that can manage the data as mentioned above. So the Nahdlatul Wathan organization needs the media that was used to overcome it which is called a web-based information system foundation that uses the PHP programming language and MySQL as its database data. With this system, it can simplify and streamline the performance of the Nahdlatul Wathan management, as well as the community, to get the latest information on the development and number of foundations under the Nahdalatul Wathan, which can be accessed quickly and precisely, so it does not take a long time.
Web-Based Expert System To Detecte Chili Desease Using Rule Base Reasoning Approach
Authors: Suhartini  , dewi Intan komala , Wijaya Lalu Kerta
Published: July 2020

Along with the progress of global Era, the development of science is also growing rapidly especially for the progression of technology, information and communication. Artificial intelligence is part of computer science specifically aimed for designing intelligent automation of behavior in system of computer intelligence. Expert system as part of the application of artificial intelligence is for combining knowledge, facts and search technique to solve the problem that normally requires expertise from an expert. One of directions from the system of expert in agriculture is the system expert for detecting diseases of chili plant. In this study, the expert system was designed to detect disease of chili plants on web-based using the rule-based reasoning approach method, because the method can decide a disease of chili plant with a set of facts - symptoms or symptoms that exist in a sequential manner and this approach can also provide an explanation of the steps in achieving the solution for the disease. Web-Based Expert System To Detecte Chili Desease Using Rule Base Reasoning Approach is expected to solve the problems in agriculture quickly, precisely and accurately especially for the chili’s farmer.
Application of the Decision Tree Method to Predict Student Achievement Viewed from Final Semester Values
Authors: Wasil Muhammad , Sudianto Aris , Fathurrahman
Published: July 2020

Along with the development of the human mindset progress, humans began to develop a system that can help humans in dealing with problems that arise so that they can solve them easily. The decision tree or better known as the decision tree is an implementation of a system that humans develop in finding and making decisions for these problems by taking into account the various factors that are related within the scope of the problem and among about education. Education is a conscious and planned effort to create an atmosphere of learning and learning process so that students can increase their potential. The function of education is very important as one of the factors driving development as human resources to increase the ability of the community to develop science. Thus, the teaching and learning process is one of the determining factors for the success of education in schools/madrasas, the low quality of education is a result of the low quality of the learning process carried out in school
Carrying capacity water control procedures of land use changes in sub watershed Cimanuk upstream using GIS (Geographic Information System)
Authors: susanti Dwi Rahayu , Darmawan Muhammad Iman
Published: July 2020

Subzone Cimanuk sub-watershed upstream is playing an important role towards the conservation of water resources for the downstream subzone. To meet the needs of the community, drinking water for agricultural irrigation. However, the amount of land conversion causes the water system in the watershed disturbed. This study aimed to analyze the changes in land use in the watershed Cimanuk upstream and analyze changes in the carrying capacity of the water system upstream use Cimanuk geographic information systems. The analysis shows that it has increased there use of its land area cultivated by horticultural fields such as carrots, potatoes, and other crops. Food and agricultural land development in research, at least from 2005 to 2015, has an adverse impact on the functioning of the Sub-Basin Upstream Cimanuk characterized by decreasing the carrying capacity for water regulation. Or that the development of agricultural land in this area is actually very appropriate if only from the aspect of that is because of relatively fertile landforms (volcanic areas), but the development has destroyed sub-watershed function itself as a water catchment area.
Adaptive Thresholding Algorithms and Morphological to Improve the Quality of Takepan Sasak Image Readability
Authors: Samsu LM , Fathurrahman Imam
Published: July 2020

One of the cultural heritages in West Nusa Tenggara, especially Lombok, is takepan (lontar ancient manuscripts). Takepan written on leaf sheets of Lontar is known as the jejawan script (derived from ancient Javanese). local adaptive[1] adaptively setting thresholds for each pixel can behave better than the global method in degraded and damaged document images. Adaptive binarasi can also reduce noise when segmenting text from the background. The process of determining the threshold value works on blocks in the image. Images that have contrast and lighting variations that are very difficult to solve as background or background because there are a lot of pixels, this recommends using Local Adaptive Thresholding. From the research that has been done, it can be concluded that adaptive thresholding and morphology with dilation approach help maximize image readability with the highest PSNR value reaching 34,107 dB. In further research can be developed using feature extraction so that it can recognize the character of the letter in takepan.
Implementation of the Neural Network (NN) Algorithm in Analysis of Student Class Increment Data Based on Report Card Value
Authors: Alimuddin  , Saiful Muhammad
Published: July 2020

Formal education is education in schools that takes place regularly and gradually follows clear and strict conditions, the purpose of which is to add insight or knowledge in a person and enrich character, and prepare someone to be able and skilled in a particular field. 12 years formal education that must be obtained by everyone starting from elementary, middle and middle school, in general in the process of class improvement, several stages must be passed by students to be able to proceed to higher grade levels, including good behavior, level attendance of at least 70% and the value must be above the KKM (Minimum Settlement Criteria). KKM is the level of achievement of basic competencies that must be achieved by students. So that in the analysis of determining student achievement classes, data mining techniques are used by applying the Neural Network (NN) algorithm to facilitate the parties involved in analyzing the level of increase in student class and can find out the results of how high the accuracy of the algorithm applied. In this experiment, testing was carried out 3 times with different K-Fold Validations on the cross-validation operator. K-Fold Validation functions to divide the amount of training data and test the data on the tested data, the result of the accuracy that has been tested is 99.26%.
Prototype System of Temperature and Humadity Automatic in Oyster Mushroom Cultivation using Arduino Uno
Authors: akbar Taufik , gunawan indra , utama satria
Published: July 2020

Current technological developments make it easy to carry out maintenance of oyster mushroom cultivation. The maintenance can be done by setting the temperature and humidity automatically in the cultivation room. With automatic temperature control, it can facilitate the treatment of oyster mushrooms. In realizing the simulation of creation, automatic temperature and humidity controllerconsists of the hardware that are needed such as temperature and humidity sensor units, LCD display units, and Arduino Uno as the processors which are then combined into a system. The software part is designed to use C language as the programming language to regulate the temperature and humidity based on Arduino Uno which is based on 3 main circuits, there are Input circuit, Process sequence and Output circuit. The temperature and humidity sensor circuit as input, Arduino Uno as a processing, sprinkle as output. The advantages of this system are: farmers do not always have to stay in the garden to spray the farm in morning and evening.
The Impact Analysis of Facebook on the Education Patterns of Elementary School Children
Authors: Susilawati  , Hadiatul R , Ashabul M
Published: July 2020

This research is a qualitative research that aims to determine the impact of facebook social media on children’s education patterns in SDN 4 Aikmel Aikmel Sub-district in East Lombok District in 2019. The population in this study is class IV, V, and VI. The sample used in this study is students who have facebook and are active users on facebook social media. Data collection techniques used are observation, interviews, questionnaires, and documentation. The results of the study show that facebook social media has a positive and negative impact on the education patterns of elementary school children. As for the more prominent impact in this study is a negative impact on children. Because the child at his age is not mature enough to use the facebook site and still needs guidance from family, school, and the surrounding environment. Thus technology from social media facebook shows a change in the education patterns of elementary school children in social activities or relationships socializing in the real world. This happens because the surrounding environment affects the growth and development of elementary school children. As for the good and bad use of social media facebook depends on the pattern of family education that is given to children.
Effectiveness of Biology Learning Using Cooperative Learning Methods Type TPS (Think, Pair, Share) Against Student Achievement
Authors: Muiawan Wawan
Published: July 2020

Objective To determine the effect of learning Biology using TPS type learning methods on class VIII student achievement MTs NW Korleko 2019/2020 Academic Year. This type of research is experimental research. Quasy Experimental Design design in the form of pre-test post-test control group design. The subjects of this study were students of class VIII MTs NW Korleko. The population in this study was VIII grade students consisting of 2 classes with 45 students. The sample in this study was class VIII A as an experimental class and class VIII B as a control class. The instruments in this research are 1). Learning implementation instruments consisting of syllabus and lesson plans and 2). Data collection instruments in the form of tests. Data analysis technique used in this research is statistical analysis using t-test. Data analysis achievements obtained the average value of the experimental class the number of scores obtained by the highest score of 10 and the lowest score was 4. And the calculation obtained an average value of mean (M) = 6.93 and standard deviation (SD) = 1.69. based on the categories intended for categorizing scores, if the average obtained above is Mean (M) = 6.93, the quality of student achievement for the experimental group is included in the high category. Whereas based on the data collected for the control group, the highest score is 9 and the lowest score is 3. And the calculation is obtained mean (M) = 5.5 with Standard Deviation (SD) = 1.87. Thus based on the scoring criteria can be made categorizing scores as follows: If the Mean Mean (M) obtained above is 5.5 then the quality of student achievement for control groups is included in the medium category. From the observation performance and analysis achievement, it was not obtained t count = 2.73 and t table with dk = n1 + n2 - 2 = 43, the price of t table was obtained = 1.68. Because t arithmetic> t table (2.73 <1.68) so Ho is rejected and Ha is accepted. This shows that there is a positive and significant influence on the use of TPS type of cooperative learning in improving the learning achievement of VIII MTs NW Korleko students.
Increasing the Students’ ability of High Order Thinking Skill (HOTS) By Implementing of blended learning
Authors: Fahrurrozi
Published: July 2020

The purpose of this study is to improve the Students’ ability of High Order Thinking Skill (HOTS) by implementing of blended learning in the second semester junior high school mathematics course Mathematics Education Program FMIPA Hamzanwadi University academic year 2019/2020. This type of research was action research with three cycles. The research instrument used was HOTS ability tests. Data analysis used was descriptive qualitative narrative analysis and descriptive statistical quantitative data analysis. Based on the data finding, it was found that: 1) The learning process had improved seen from the observation results of the teaching and learning process, and 2) The ability of HOTS students had increased.
The Psychometric Properties of Acceptable, Accessibility, and Feasibility Scale for Web-based School Resilience Training Program:A Rasch Analysis
Authors: Suranata K , Ifdil I
Published: July 2020

This study aims to analyze the acceptability, accessibility, and feasibility of the web-based school resilience program. Study participants consisted of 162 students who had attended and successfully completed this program for 3 months. A total of 14 items were acceptability, accessibility, and flexibility (AAF) scale that asked students to respond to their perceptions after joining the program. The scale uses a Likert pattern with five categories. Data analysis using Rasch Analysis Model through Winsteps 4.1.0 Software. The results showed that AAF scale quality met the requirements as a fairly good measuring instrument based on the Rasch measurement model. Students’ responses to acceptability, accessibility, and flexibility of web-based school resilience programs were found in the medium and high categories.
The Pinisi : A Study on the Development of Boat Technology
Authors: Amar Syahrul , Badarudin  , Sulastri Andi
Published: July 2020

Two main problems studied in this research; traditional boat-making and the modern one. This research aimed at studying the changes taking place in the boat-making and the factors causing these changes so that the modern boat-making. Research use of historical method. The data were collected by library research, documentation, interview and observation. The skill in the making of the traditional pinisi is considered as a skill of the boat makers inherited from their ancestors from generation to generation. The traditional boat-making has very simple working relation, namely, between leader, crew members and prospective crew members. The rising demand of boats have resulted in the development of working relations. The change has also occured in the traditional boat with the introduction of motorization, in which machine are use as the moving power. The traditional tools have also developed with introduction of modern ones as a step toward the process of adaptation and the speed in the production.
Using fractional card media and math games to increase students’ activities and learning outcomes
Authors: Atiaturrahmaniah  , fajri Nurul
Published: July 2020

This study aims at improving the mathematics learning outcomes using fractional card media and math games of the fourth graders of elementary school. The problems investigated were: 1) the students’ activities in learning mathematics, 2) the teacher’s teaching activities, and 3) the students’ learning outcomes. This research is a classroom action research and is carried out in two cycles. Each cycle consists of 4 stages: planning, implementing, observing, and reflecting. The data collection was done using observation and test.

The result of the research showed an increase from one cycle to the next cycle in terms of students’ learning activities, the ability of teacher to manage classrooms, and students’ learning outcomes. The use of fractional card media and mathematical games succeeded in increasing students’ learning activities and outcomes. It is seen from the observations on the students’ activities in the first cycle. It was average 37 and categorized enough. It increased to 47.2 in the second cycle and it was categorized good. In Cycle 1, the students’ learning outcomes was 70.5 and increased to 82.7 in Cycle 2. The classical completeness reaches 94.5% which is categorized excellent.
Information and Communication Technology (ICT) Within the scope of early childhood development
Authors: Suhirman  , Ramdani Zuhut , Ramdhani Sandy
Published: July 2020

The impact of the development of information and communication technologies to the development of children aged 5-6 years is a problem that must be studied and observed in life as well as issues regarding the process of child development and the role of technology makes all these aspects to be studied very interesting to study. This study uses a quantitative research method used is survey method. The population is children aged 5 years in Seruni Selong environment by using random sampling with a sample of 25 children. The data collection technique used is observation and interview techniques. The instruments used are questionnaires and questionnaires. Data analysis technique used is to use a percentage of the impact of ICT on the development of children aged 5 and described through descriptions of statistical and qualitative description on interview techniques. The Research Result role of communication technology and information on the development of children, especially children aged 5 years in an environment seruni Selong is high criteria with as many as 15 children with a percentage of 60%, the criteria were as many as seven children with a percentage of 28% and 3 children, or the percentage of 12% of the criteria are very high while the results obtained interviews of child development is strongly influenced by information and communication technologies, especially mobile phones, televisions and computer / laptop
Realistic Mathematics Learning Model Through Traditional Game
Authors: Ibrahim D S M , Ahyan S
Published: July 2020

The objective of this study is to produce realistic mathematics learning models through traditional games, secondly to preserve a culture that has been largely abandoned and replaced with modern games. This study explores a learning model consisting of; students, traditional-games, and learning materials. It starts by analyzing the needs of students about a subject matter of learning that is less than the standard of competences, specifically identifying and designing traditional games that correspond to the subject matter to be developed The results of this study are expected to be an alternative for students to get to know culture while learning and reduce student dependence on console games to foster student social enthusiasm. The results of this study in the form of research products include; 1) guidebook and supporting media, 2) learning tools and 3) teaching materials.
Ethnomathematic Of Sasaknese As A Mathematic Learning Source
Authors: Supiyati Sri , Halqi Muhammad
Published: July 2020

Science and technology are increasingly developing with the times. This has made a significant contribution in developing educational technology. In the midst of the development of educational technology, the education curriculum also demands the involvement of culture in schools learning aiming at creating generation of characterized students and be able to maintain and preserve culture as the foundation of the nation’s character. As the result, education plays a major role in supporting national development and fulfills the needs and aspirations of the community. The link between educations becomes a key in the national ability to develop and achieve sustainable development. While the purpose of education is to balance and integrate some of the tensions between global and local, tension between tradition and modernity, education should help young people value a history and cultural traditions by balancing these with ethical acumen and cooperative skills to honor where change and innovation are necessarily valuable. Thus, the presence of learning innovations such as ethno-mathematics is needed so that learning mathematics can become more fun.
The Development of Test Instruments to Measure Students’ Mathematical Communication Skills
Authors: Nursalam  , Angriani Andi Dian , Dewi Riska , Nur Fitriani , Halimah Andi
Published: July 2020

This study aimed to determine the procedures and quality of developing test instruments to measure student mathematical communication skills of SMP Negeri 17 Makassar. The research type used research and development with the Plomp model through 4 stages: preliminary investigation, design, realization/construction, test, evaluation, and revision. The results showed that the developed test instrument was valid with a high interpretation from the value of CVR and CVI is 1. The instrument test was reliable on 0.71 with a very high interpretation while in terms of the level there was 1 item in the difficult category, 7 items in the medium category and 1 item in the easy category. In terms of distinguishing power, there were 2 items at sufficient categories, 3 items in the good category, 2 items in very good categories and 2 items in the poor category. Therefore, the test instruments that met the quality of the criteria from the good test instruments consists of 5 items of description questions. Moreover, based on the results of the trial, it is known that from 32 students there were 4 students categorized who had a very good level of mathematical communication skills, 9 students included in the good level of mathematical communication skills, 17 students under sufficient level of mathematical communication skills, and 2 students in the less level of mathematical communication skills.
The Development of Teaching Materials for Subjects of Numerical Method Assisted by MATLAB Software in Mathematics Education Department Students
Authors: Suharti  , Sulasteri Sri , Sari Nurul Novita , Sriyanti A. , Baharuddin
Published: July 2020

The purpose of this study was to develop teaching materials for numerical methods supported by valid, practical, and effective MATLAB software for students of Mathematics Education Department at UIN Alauddin Makassar. The type of research used was Research and Development with reference to the ADDIE development model, namely Analysis, Design, Development, Implementation, and Evaluation. The product developed in the form of teaching materials was a module which not only contains material in the Numerical Method course but also was equipped with MATLAB syntax that can help students actively in the teaching and learning process. The instruments used in this study were expert validation sheets, observation sheets for the implementation of teaching materials, student questionnaire responses, observation sheets for student activities, and learning achievement tests. Based on the results of trials conducted, it was found that (1) The validation results for teaching materials and all instruments are in the very valid category. (2) Practical, the average of all aspects are in the category implemented entirely and all aspects of student responses are very positive (3) Effective, student learning outcomes have met the completeness criteria and the average student activity using teaching materials assisted with MATLAB software is in the category very good. So it was concluded that the development of teaching materials assisted by MATLAB software in the numerical methods course of students Mathematics Education Department at UIN Alauddin Makassar had met the criteria of validity, practicality, and effectiveness.
Intensification of the dispersion of the global climatic landscape and its potential as a new climate change indicator
Authors: Guan Yanlong , Lu Hongwei , He Li , Adhikari Hari , Pellikka Petri , Maeda Eduardo , Heiskanen Janne
Published: July 2020

Increases and decreases in the areas of climatic types have become one of the most important responses to climate warming. However, few attempts have been made to quantify the complementary relationship between different climate types or to further assess changes in the spatial morphology. In this study, we used different observed datasets to reveal a dispersion phenomenon between major global climate types in 1950–2010, which is significantly consistent with the increasing trend of global temperatures. As the standard deviation of the area of major climate zones strengthened in 1950–2010, the global climatic landscape underwent notable changes. Not only did the area change, but the shape of the overall boundary became regular, the aggregation of climatic patches strengthened, and the climatic diversity declined substantially. However, changes in the global climatic landscapes are not at equilibrium with those on the continental scale. Interpreting these climatic morphological indices can deepen our understanding of the redistribution response mechanisms of species to climate change and help predict how they will be impacted by long-term future climate change.
Identification method of early water influx in gas reservoirs
Authors: Zheng Yuping
Published: July 2020

The formation water will directly lead to the loss of gas well productivity and the reduction of gas reservoir recovery, and will also have a serious adverse impact on the development of gas reservoirs. In the development of water flooding gas reservoirs, early identification of water invasion is a prerequisite for making full use of the dry period for production and actively implementing water treatment measures. At present, the identification methods of water invasion mainly include production water analysis, pressure drop curve identification, well test monitoring and simulation calculation. Based on the principles, adaptability, and existing problems of these methods, water intrusion identification should be carried out based on gas well geological information using multiple methods.