bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of TiC formation on the microstructure and hardness of wear-resistant steel
Authors: Wang Yongfu , Yang Changlin , Li Jianbin , Wang Yifei , Liu Feng , Liang XiaoKai , Sun Xinjun
Published: July 2020

In this study, as-cast low alloy wear-resistant steels with Ti contents of 0.6 and 3.0 wt-% were prepared at different solidification cooling rates, and the effects of TiC formation on their microstructures, hardness values, and wear resistances were investigated. The obtained phase diagrams and experimental data revealed that the TiC phase was formed via a divorced eutectic reaction in a residual liquid phase during solidification. The larger Ti content promoted the formation of TiC particles, while the solidification cooling rate represented the main influencing factor. Moreover, the produced TiC phase increased the wear resistance of the studied steel and decreased the matrix hardness, suggesting a new method for enhancing its mechanical properties through the formation of a hard ceramic phase.
MiR-216a-3p regulates the proliferation, apoptosis, migration, and invasion of lung cancer cells via targeting COPB2
Authors: Wang Xiaolin , Shi Jialun , Niu Zhigao , Wang Jianwu , Zhang Wenping
Published: July 2020

Effect of miR-216a-3p on lung cancer hasn’t been investigated. Here, we explored its effects on lung cancer. MiR-216a-3p expression in lung cancer tissues and cells was detected by RT-qPCR. The target gene of miR-216a-3p was predicted by bioinformatics and confirmed by luciferase-reporter assay. After transfection, cell viability, migration, invasion, proliferation, and apoptosis were detected by MTT, scratch, transwell, colony formation, and flow cytometry. The expressions of COPB2 and apoptosis-related factors were detected by RT-qPCR or western blot. MiR-216a-3p was low-expressed and COPB2 was high-expressed in lung cancer tissues and cells. MiR-216a-3p targeted COPB2 and regulated its expression. MiR-216a-3p inhibited lung cancer cell viability, migration, invasion, and proliferation, while promoted apoptosis. Effect of miR-216a-3p on lung cancer was reversed by COPB2. MiR-216a-3p regulated proliferation, apoptosis, migration, and invasion of lung cancer cells via targeting COPB2.
Construction of top university identity in high-stakes genres of public communication – a systemic functional discourse analysis of three genres of PKU and THU presidential talk and letter to prospective students
Authors: Tian Jianqiu
Published: July 2020

This article highlights the pivotal role of genre in text production and identity construction by an analysis of three high-stakes genres of public communication by presidents of the top universities in China, Peking University (PKU) and Tsinghua University (THU). A brief review of the Systemic Functional Linguistic (SFL) research on identity indicates that the current approach did not take into account the role of text structure as an important means of identity construction, which can be attributed to flaws in the SFL theorization of genre. In view of this, the Genre as a Nexus of meaning making (GaN) model is proposed, followed by a reinforced analytical framework of text analysis encompassing Halliday (and Matthiessen)’s functional grammar and Martin (and Rose)’s discourse semantics, which is subsequently deployed to study the texts of concern from an SFL vantage point. The results indicate that not only are different aspects of the university represented in the different genres, but the generic structure of the texts is indispensable in the university’s identity construction. Moreover, the comparison of the genres with those in other culture and of the results with previous research underscores culture’s powerful impact on genre and the universities at the forefront of globalization.
Scalar Field Mass Generation in the Gauge Theory SU(2)⊗U(1)⊗Z2
Authors: Haniah Siti Romzatul , Istikomah  , Khalif Muhammad Ardhi , Kusuma Hamdan Hadi
Published: July 2020

A minimal extension of the Standard Model with the gauge grup SU(2)⊗U(1)⊗Z2 has been built. In this theory, there are three scalar fields, namely two doublet Φ and η and one singlet Φs. The scalar field mass of Φs is found to be greater than the mass of η and the scalar field mass of η is greater than the mass of Φ (mΦs > mη > mΦ).
Decision Rules on Damaged House Data for Natural Disasters Using The If-Then Method Of The Rough Set Theory
Authors: Wulandya Siti Arni , Nurmayanti Wiwit Pura
Published: July 2020

Natural disasters remain a real threat for Indonesia. One province in Indonesia which has a high disaster risk is Nusa Tenggara Barat. The impact of disasters can be understood better if the data shape systematically. Data mining techniques that are used in this research is the Rough Set theory. It is an alternative analysis method for analyzing the imperfect data. Disaster that cause damaged houses in Nusa Tenggara Barat, including inconsistent data (rough). Researchers want to know the rules of data patterns (decision rules) using if-then rules from rough set theory. Based on the analysis, gained some rules of data patterns cause heavy damaged houses, minor and minor and heavy damaged houses. 32.75% of the houses were heavily damaged happens when a tornado disaster-stricken area with rain intensity is very low, flat topography and medium density of population. 89.93% of homes with minor damage occurs when an area flooded with low rainfall intensity, undulating topography of the area and the condition of the population is very dense. 38.45% of homes with minor and heavy damage occurred when a severe flood-stricken area with low rainfall intensity, topography of the area is very steep and very dense population conditions.
Evaluation Of Lecturer Education And Teaching Performance Through E-Monevin Using K-Nearest Neighbor (K-NN) Algorithm
Authors: Sadali Muhamad , Putra Yupi Kuspandi , Mahpuz
Published: July 2020

In implementing the performance evaluation of lecturers, a monitoring and evaluation Information System based system has been developed, better known as e-monevin. Assessment is conducted by students on lecturers who take courses taken by students in the current semester. The results of the student assessment are taken into consideration in the assembly of lecturers. Performance is a way, behavior, and ability of a person. The performance of lecturers is assessed by how to carry out their duties and responsibilities as educators in delivering material to students. Measurement and evaluation of lecturers’ performance seen from several aspects one of which is the field of education and teaching. The purpose of this study is to determine the performance of lecturers in the field of education and teaching through e-mononevin using Rapid Miner software in data processing. The data processing technique used is the K-Nearest Neighbor (K-NN) algorithm. From the test results that have been done using the K-NN algorithm in K-Fold Cross Validation with different number of validations, the best accuracy value obtained shows that the K-NN algorithm using number of validation 6 and 9, with an accuracy value of 96.30 %.
Implementation of Naive Bayes Algorithm in Analyzing Acceptance of Poor Student Assistance
Authors: Nur Amri Muliawan , Wazdi Muhammad Farid , Harianto Bambang , Zaini Muhammad Farid
Published: July 2020

The cost of education that is not insignificant is felt by the community, especially among the lower-middle-class people who have low-income levels. MA Hizbul Wathan NW Semaya Sikur is one of the schools where some students still have a lower-middle economic level. To overcome the existing problems the government provides assistance to poor students (BSM) in schools, but the problems felt in schools are still difficult in analyzing students who are entitled to receive BSM, therefore it is necessary to build a data processing system using the principles of data mining with the aim of helping the school in analyzing students who are entitled to receive assistance. The Naive Bayes method was chosen because it can predict future opportunities based on experience. The test results obtained were 95.27% of 169 student data with an AUC value of 1,000. This value is categorized as an excellent classification. Therefore the Naive Bayes method can be used as a reference in analyzing poor student assistance data very well.
The Impact Of Wonder Share Quis Creator Application To Improve Cognitive Abilities in Early Childhood
Authors: Yuliastri Nur Adiyah , Firdaus Jannatul , Ashari Moh Alwi
Published: July 2020

This study aims to know the effect of the Wonder Share Quis Creator Application towards the Children’ Cognitive Ability of Aged 5-6 Years in B2.. This studywas experimental research, with the form of one-group pretest-posttest design. The study population was B1 and B2. The sample of the study included a B2 group consisting of 16 children. The study instruments used in the study were tests and documentation. The test in the form of a Wonder Share Quis Creator game that used a computer consists of 15 items that have been valid. Data analysis techniques using the normality test, and hypothesis testing using t-test. The results of calculation of hypothesis testing which showed that tcount (11.17) > ttable (2,131). Where the table was calculated with a 5% confidence level was 2,131. So, the results of testing the hypothesis were significant, then Ho was rejected and Ha was accepted. So from the results of these test data it can be concluded that the Wonder Share Quis Creator Application Affects The Children’s Cognitive Abilities of Aged 5-6 old.
Development Of Interactive Physics Learning Media Macromedia Flash 8 Based On Straight Motion Material
Authors: Fartina  , Hizbi Tsamarul , Syahidi Khaerus
Published: July 2020

This study aims to produce interactive physics learning media based on macromedia flash 8 straight motion material for Class VII Students of SMP / MTs. This type of research uses the Research and Depelopment (R&D) approach by adopting the ADDIE (Analyze, Design, Depelopment, Implementation, and Evaluation) development model. Design a learning media trial using the Post-Test Only Control Group Design. Data collection instruments in the form of material expert evaluation questionnaire, media expert evaluation questionnaire, natural science teacher evaluation questionnaire, student response questionnaire, multiple choice tests and student learning activity questionnaire, data collection techniques namely test techniques and observation techniques. Data analysis techniques are media feasibility test, normality test, variance homogeneity test and hypothesis test. The results of the study of the feasibility aspects of instructional media, media experts declared worthy of an actual score of 75, material experts declared worthy of an actual score of 73, the subjects of Natural Sciences stated worthy of an actual score of 66, and the average score of actual responses of 4 students was 58.25 . While the results of research on the aspect of learning media testing shows that interactive physics learning media based on macromedia flash 8 is effective on student learning outcomes with an average experimental class score of 70.38 and classical learning completeness of 71.42%. The percentage of active students in the good category with a percentage of 69.09%. When compared with the control class with an average value of 50.37 and classical learning completeness 22.22%. The percentage of active students in the category is sufficient with a percentage of 41.82%..
The application of Usability Testing Method for Evaluating the New Student Acceptance (NSA) System
Authors: Uska Muhammad Zamroni , Wirasasmita Rasyid Hardi , Fahrurrozi Muh
Published: July 2020

The new student acceptance (NSA) system is a design system to automate the selection of new student admissions, starting from the registration process, and the selection process to announce the results of online elections. It executes usability evaluation to determine the level of effectiveness, efficiency, and user satisfaction. This study focuses on testing the usability of the NSA system using usability testing methods on aspects of effectiveness, efficiency, and user satisfaction at SMAN 1 Pringgarata. This study is quantitative with a descriptive research method approach. The population in this study was 40 people and the number of samples in this study was eight people. Performance measurements, retrospective think-aloud, and questionnaire techniques are techniques used for data collection. The task scenario and System Usability Scale (SUS) questionnaire with a Likert scale is the instrument used. Data analysis used descriptive statistics, user success rates and Mann Whitney U-tests. The results showed that, (1) the NSA system is effective with value 98.5%, (2) it system is efficient with the value 6 over 0, (3) after implementing the NSA system, it satisfies users (80 >68). The recommendation given is the addition of images and icons on the main page of verification so that the pages on the system are more interesting and varied.
Application of K-Nearest Neighbor Algorithm for Classification of Mental Disabilities Patients Based on Age
Authors: Nurhidayati  , Suhartini
Published: July 2020

People with mental disabilities have the same position, rights and obligations as the non-disabled community. As part of Indonesian citizens, it is not appropriate for men and women with mental disabilities to be treated bad and experience discrimination. In Sukamulia Subdistrict, East Lombok, it is noted that the number of people with disabilities at the end of 2018 recorded 358 sufferers where people with disabilities are dominated by people over 18 years who are categorized as persons with disabilities. To find out the number of patients categorized as persons with disabilities, classification is needed. The purpose of this study was to classify people with disabilities based on age using the classification of KNN (K-Nearest Neighbor) Algorithm based on Age. Validity test is used to determine the best and most accurate level of accuracy. In this study the level of accuracy obtained is that in testing using K-Fold Validation 3 with a value of k = 3, the accuracy result is 97.49%.
Normalization of Facial Pose and Expression to Increase the Accuracy of Face Recognition System
Authors: Djamaluddin Muhammad , Martua Hamonangan N , Aswian Editri S
Published: July 2020

Normalization of face poses and expressions is one of the critical steps to restore the raw appearance of faces in uncontrolled conditions (in the wild) and help improving the performance of face recognition systems. Researchers in the field of computer vision has for a long time trying to find methods to normalize of poses and expressions to gain accuracy improvement for the face recognition process. The process of normalization is related to the face alignment stage, which aims to find face landmarks (point markers of facial features). From this face landmarks, the poses and facial expressions that are different from canonical face obtained for later transformation. This paper discusses the method of normalizing poses and facial expressions that have been proposed by researchers from geometrical-based transformation to the current state of the art, which is a deep learning-based system.
Blended Learning based on Problem Based Learning to Improve Critical Thinking Ability of Prospective Counselors
Authors: Zamroni Edris , Muslihati  , Lasan Blasius Boli , Hidayah Nur
Published: July 2020

This study determines the effectiveness of the application of blended learning with problem-based learning methods to improve the critical thinking skills of prospective counselors. The subjects chosen were 40 guidance and counseling students taking counselor personal development courses. I conducted the study through a true experimental design with one experimental class and one control class containing 20 students each. The t-test result of students’ critical thinking skills resulted in the t count of 2.41> t table of 2.03. This shows that the students’ critical thinking skills taught using PBL-based blended learning are better than those taught with conventional PBL. Therefore, we can conclude that Blended Learning based on Problem Based Learning is effective for Improving the Critical Thinking Skills of Prospective Counselors.
Authentic-Peer Assessment Instrument To Measure The Ability Of A Chemistry Teacher Candidate Evaluation On Basic Chemistry Small Skill Laboratory Works
Authors: Hakim Fachri , Zammi Muhammad
Published: July 2020

The dominance of paper and pencil assessment tests in chemistry small skill laboratory works make assessments in the affective and psychomotor less attention. This research aims to develop an authentic-peer assessment instrument to measure the ability of a prospective evaluation of chemistry teachers on basic chemistry small skill laboratory works. The method used research and development. The subjects were students of the second semester of chemistry education 2018 at Walisongo State Islamic University Semarang. Data collection instrument in the form of sheets validation instrument to measure the validity and reliability of peer assessment and questionnaire responses sheet learners. The results of authentic-peer assessment developed very validly in the category with a value of 31. The internal consistency reliability Spearman-Brown gained 0.78 means indicates that the authentic assessment instruments developed have a strong level of consistency. The measurement results evaluation capabilities candidate chemicals are known educator excellent ability group with a percentage of 31.45%, a good ability with the percentage of 47.48%, enough ability with the percentage of 15.79%, and less ability with the percentage of 5.28%. The questionnaire results obtained by 82 percentage points. The results of that study concluded that authentic assessment developed meet the category of valid, reliable, and practical.
Identification of Sport Talents with The Sport Search Methods
Authors: Suryadia Lalu Erpan
Published: July 2020

Identification of Sport Talent With the Sport SearchMethod at SDN 1 Rempung in 2019. Physical Education and Recreation at Hamzanwadi University. The problem of this research Is the talent possessed by 1 Rempung Elementary School students in 2019? Research Objectives To find out what sports talents possessed by elementary school students in 1 Rempung 2019. The research method uses a descriptive method with a sport search model talent scouting survey survey technique. The sample in this study amounted to 23 children, taken using a purposive sample technique. The research instrument used a sport search model scouting scout test. Analysis of research data using quantitative descriptive analysis of percentages. The results showed the results of the identification of sports talent in SDN 1 Rempung were Diving, Gymnastics, Long and Triple Jump, Sprint Running, Table Tennis, High Jump, Indor Cricket, Cricket and Power Lifting. The dominant sports talent in SDN 1 Rempung is Diving. Research Suggestions. 1) In order to develop deeper research on identifying the talent of prospective sportsmen in Negeri 1 Rempung students using the sport search method. 2) In order to develop deeper research on the importance of knowing student talent from an early age. 3) The importance of the teacher Physical education and sports socialize the talent scouting method with the Sport Search method.
EFL Students’ Ability in Answering TOEFL Reading Comprehension Section
Authors: Adib Nazri M. , Wijaya Herman , Zainurrahman
Published: July 2020

This study aimed at finding out the students’ ability in answering TOEFL reading comprehension section of the English Language Education Study Program of Hamzanwadi University. This study was categorized as a descriptive quantitative research. This study was conducted at the fourth semester students of Hamzanwadi University. The population of this study was 96 students from 3 classes and the sampling method was purposive sampling. The sample of this study was 32 students. The research instrument used to collect the data was reading comprehension of TOEFL. The collected data were submitted by using SPSS 22 for windows. The mean score of the test was 39.2. It was categorized into low. Based on the result, the present researcher found that the students of English Language Education Study Program of Hamzanwadi University had low ability in answering TOEFL reading comprehension section.
WILMO (Web-based Interactive Learning Module), E-learning Design for Vocational School
Authors: Arianti Baiq Desi Dwi , Wirasasmita Rasyid Hardi , Mustamiuddin
Published: July 2020

Today, technology and learning have synergized with each other among educators. A learning media, specifically designed with the application of technology, can contribute to effective teaching for all students and can help them reach their highest potential. This study aims to design a learning module named WILMO (Web-based Interactive Learning Module) with ADDIE (Analysis Design Development Implementation and Evaluation) as the development model. This design comprises the depiction of Flowcharts, Data Flow Diagrams, and Deployment diagrams of WILMO.
Implementation of Discovery Based Learning and Talking Chips to Improve Attitudes Appreciating the Others Opinion
Authors: Hadi Hasrul , Rahmaningsih Henny , Subhani Armin
Published: July 2020

This study aims to determine results of implementation the discovery based learning models and talking chips to improving the attitude of respecting the others opinion on geography learning. To achieve these objectives, this study design was used by the Classroom Action Research (CAR). This research activity is a series of Lecturer Assignment Programs in Schools (LAPS). This research was conducted on geography learning in class XI IPS 5 of SMAN 1 Selong, East Lombok. The research carried out included six meetings on basic competencies in understanding regional conditions and Indonesia’s strategic position as the world’s maritime axis. From the six times the meeting was divided into three cycles. The method of data collection is done by observing the students learning activities. Data analysis in this study was done by descriptive analysis of percentages. The results showed an increase in the average percentage of attitudes respecting the opinions of others in each cycle. In the first cycle the average percentage showed a score of 69.5%, while in the second and third cycles it increased to 76% and 84%. So it can be concluded that the implementation of the discovery based learning model and talking chips succeeded in increasing the attitude of respecting the others opinion for students in learning geography.
Increased Student Interest in Learning through the Application of Active Learning Methods in the Thematic Learning
Authors: Fadilah Dina , Alwi Mijahamuddin
Published: July 2020

The purpose of this study is to find out whether the implementation of active learning methods can increase the interest in learning of fifth-grade elementary school students and find out the results of increased interest in learning for fifth-grade elementary school students through the application of active learning methods in thematic learning. This research is a Classroom Action Research (CAR) which was conducted in six meetings in two cycles. Data collection techniques include test and non-test with the conceptual understanding test instrument and observation of learning interest sheet. Data analysis was performed with qualitative descriptive. The results showed that the application of the method of active learning could increase the interest in learning of fifth-grade elementary school students in thematic learning. Based on the results of the observation sheet of 17 in the pre-cycle; 18.4 in cycle 1; and 18.9 in cycle 2. In addition, there was an increase in the average test results of students’ understanding of concepts by 74 in the pre-cycle; 75 in cycle 1; and 78 in cycle 2.
The Influence of Problem Based Learning Model Using Lesson Study Patterns on Creative Thinking Ability of Students
Authors: Marhamah  , Jannah Baiq Miftahul
Published: July 2020

His study aims to determine the effect of the Problem Based Learning model on the ability to think creatively with Lesson Study patterns in class X students of SMA Negeri 2 Selong. This type of research uses the experimental method. Lesson study is applied in Class X IPA4 as an experimental class and class X IPA 5 as a control class of one cycle which includes the plan, do, and see stages. The study design uses Pretest-Posttest Control Group Design. Data collection techniques using creative thinking tests in the form of essays. Based on data analysis, the average value of students’ creative thinking abilities in the experimental class was 72.57 and the control class was 56.59. While the results of hypothesis testing at a significant level of 5% obtained t count (9.85)> t table (1.988). The conclusion of this research is that there is an influence of problem based learning model with Lesson Study pattern on the ability of creative thinking in class X students of SMA Negeri 2 Selong
Development of Science Learning with Project Based Learning on Science Process Skill : A Needs Analysis Study
Authors: Nuraini  , Muliawan Wawan
Published: July 2020

The purpose of this study are: (1) To determine the characteristics of science learning that have been carried out by junior high school teachers in East Lombok, (2). Developing a science learning design model for junior high school by learning Science Process Skill-based Projects, (3) Science teaching materials are arranged in the form of student books. This type of research is the research development of the Dick and Carey model, which is planned for 2 (two) years. The research design in the first year was a needs analysis conducted through a survey to obtain data on the needs for the characteristics and models of junior high school science teaching that have been carried out by teachers in East Lombok as well as compiling a draft of a student’s learning design and book draft (LKS) with learning based on a Science Process Skill Project. The instrument used was a questionnaire with research subjects of science teachers and junior high school students in East Lombok. The data collected was then analyzed using descriptive analysis techniques. Based on the results of a survey of student characteristics, it can be concluded that (1) 75% of students said that science learning in the classroom was less enjoyable and 13.9% pleasant and 11.1% even tended to be boring, (2) 77.8%. Students have difficulty in solving problems that are abstract, (3) 95% of students are more interested in learning science associated with everyday problems, (4) 75% of students have not been able to think about science problems..
The Effect Of Project-Based Learning Model Using Three Dimensional Media And Computation On Achievement Of Study Reviewed based of Student’s Creativity
Authors: Ariandani Nunung , Ermanda Sandy , Fajri Nurul
Published: July 2020

The aim of this study is to know: (1) effect of project-based learning using 3D and computational media on student achievement of study in material of molecular shape, (2) effect of creativity (low and high) on student achievement of study in material of molecular shape, (3) interaction of students learning creativity and project-based learning model using 3D and computational media on student achievement of study in material of molecular shape. The method used in this study is experimental method with factorial research design 2×2 and data collection was done by test techniques for achievement of study and questionnaire for students’ creativity. Samples were collected randomly so that 4 experimental classes were obtained, the first 2 experimental classes used 3D media, and the last 2 experimental classes used computational media. Samples dispersion based on student creativity level which categorized as high or low creativity. The hypothesis was tested using two-way anava. The result of the study shows the score average of student achievement of study with low creativity using computational media is 67.75, score average of student achievement of study with low creativity using 3D media is 69.75, and score average of student achievement of study with high creativity using 3D media is 78.25. The result of statistical analysis shows that there was effect of project-based learning using 3D and computational media and student creativity (p<0.05), and there was no interaction between project-based learning using 3D and computational media and student creativity (p<0.05). based on the result it can be concluded, (1) there was effect of project-based learning using 3D and computational media on student achievement of study, (2) there was effect of creativity (high and low) on student achievement of study, and (3) there is no interaction between student creativity and project-based learning using 3D and computation media on student achievement of study.
Application of Probing Prompting Method in Physics Course
Authors: Ismatulloh Kholida , Hr Bq. Malikah , Lutfi Samsul
Published: July 2020

The aims to determine research are: (1) The Application of probing prompting methods on physic; (2) The Positive impact of using probing prompting methods on physic; and (3) The Weaknesses found in the application of probing prompting methods on physics. This research used an experiment approach. These researches were located in Universitas Hamzanwadi. The time of the research was held from April to May 2019. The population in this research were second students of Informatics Education Program, while the sample was students of Informatics Education Program who were taking physics courses students totalling 48 peoples. The data collection techniques used is observation and final grade calculation. Based on the results of the research, it was concluded that: (1) The application of probing prompting methods on physics learning starts from the assignment phase, the implementation and accountability of the tasks that have been made; (2) The positive impact of using probing prompting methods on physics learning includes: increasing student creativity, fostering student responsibility, improving students’ physics skills, and providing new experiences to students; (3) Weaknesses found in the application of probing prompting methods on physics learning appear in the lack of student participation, difficulty in controlling and supervising tasks done by students, different levels of student intelligence, and limited supporting capacity or infrastructure available on campus.
Higher Order Thinking Skills and Students Ability to Use Technology on Integral Topic
Authors: Kurniawan Prihadi , Wahyuni Arie , Waluya S. B. , Nur Cahyono Adi
Published: July 2020

This is a qualitative research that exposed the students’ higher order thinking skills (HOTS) and how they use the technology when solving a problem in calculus lecture, especially in integral topic. Autograph software is used as a new integrated technology on learning process. The samples used in this research are 8 mathematics students in second year of Mathematics Department, Ivet University. Students who are able to solve a problem and able to use their knowledge to a new situation, are the one who have high score in HOTS. How student use their knowledge to a new situation is based on how they use the autograph to construct their idea on integral basic studies.
Study Fabrication Dye Sensitized Solar Cells Using The Combined Organic Polymer Poly (3-Hexylthiophene) P3HT With Extracts Dye Natural Organic
Authors: Darmawan Muh.Iman , Basransyah  , Rahayu Susanti Dwi
Published: July 2020

Energy derived from fossil the decrease and cannot renewable. Thus many experts looking at other alternatives to create new energy that is renewable and dye-sensitized solar cells (DSSC) is one of them. The study aims to determine the characteristic of the electrical properties of each dye material natural organic, characteristic of the electrical properties of the dye material combined with Poly(3-Hexylthiophene) (P3HT). Sample testing conducted at the Laboratory of UV-Vis Spectroscopy, P3HT electrical properties combined with dye extracts will be investigated using IV Meter El - Kahfi. Test optical properties, electrical properties, and I-V characterization of the DSSC using UV Visible Spectrophotometer 1601 PC and Keitlay Type 2600A, respectively.
Application of Pyrolysis Technology as an Effort to Reduce Plastic Waste
Authors: Basransyah  , Putra Agus Muliadi , Iman Darmawan Muhammad
Published: July 2020

The problem of waste in the tourism area is one of the crucial issues that must be addressed immediately. The performance of the waste management system is not optimal, marked by the number of waste that is not managed properly in the tourism area. The purpose of this study is to conduct a study of the generation and composition of waste in general and to determine the potential and appropriate handling of plastic waste. The Pananjung Village as a beach tourism destination of waste generation as much as 5387.83 kg/day with a source of non-domestic waste generation in the form of hotels, restaurants, homestays, traders, street, beach, and tourists. The total composition of plastic waste 10.11% which is divided into two groups of plastic. The recycled plastic group is Polyethylene Terephthalate (PETE) plastic 1.62%, 0.02% High-Density Polyethylene (HDPE), 0.53% Polypropylene (PP) type, 2.16% Polyethylene (PE) type, this plastic handling is recycled by made new plastic products according to its type. While the types of plastic that cannot be recycled include 2.14% Plastic Bags, 0.34% Polystyrene (PS) and 3.30% other types of plastic. Plastic bag handling is done by pyrolysis technology. Fuel oil from the plastic bag pyrolysis process is included in the category of gasoline with C5 to C12 hydrocarbon chains.
Management of issue and public trust using information technology
Authors: Amy Najamuddin , Muchali Anggreni , Budiarto Jian , Maulachela Adam Bachtiar , Ashril Rizal Ahmad
Published: July 2020

In the era of public information disclosure, the need for public relations performance that is fast and transparent is needed in all sectors of the company, including the scope of the Provincial Government of Nusa Tenggara. The role and function of human resources and public relations institutions of the NTB provincial government have become strategic in the context of fulfilling educational information. The purpose of this study is to manage issues and public trust using information technology in West Nusa Tenggara. Management of the issue is carried out using a management mechanism called Media Control and Cooperation (MCC) and 2 (three) applications based on artificial intelligence, namely: Data & Public Information Services (DPIS) and Government Social Media Handling (GSMH). Based on studies that have been done, it can be informed that overall PRCC NTB Public Relations succeeded in gathering valid issues 22 to 24 or 91 percent.
Ethnomathematic Worksheet by Scientific Aproachs
Authors: Hirzi Ristu Haiban , Gazali Muhammad
Published: July 2020

The purpose of this research is to develop worksheet based Ethnomatematics with Scientific approaches to improve outcome learning mathematics in secondary school that valid, practical and efective. Development of learning models in this study using ADDIE development model, because it has a simple stage, but clear and understandable. The model consists of five main stages, namely (Analysis, Design, Development, Implementation, and Evaluation). Tests performed on the class VII B Mts Riadlul Jannah NW Penjor. Based on the analysis of the trial showed that the worksheet based Ethnomatematics with Scientific approaches to improve learning outcomes mathematics in secondary school meet the criteria for a valid, practical and effective. Criteria of validity can be seen from the analysis results that meet the criteria of validity worksheet very valid acquisition of the actual total score of 313 out of a maximum score of 375. Criteria of practicality can be seen based of results teacher’s assessment analysis and the results of analyzing the response of students who meet the criteria are very practical based on the assessment of teachers with the acquisition of the actual total score of 123 out of a maximum score of 135 and has achieved practical criteria is based on the students’ responses with the percentage of 88.33% of standards. Criteria for effectiveness and results from analysis ≥ 75% student achievement test which student learning outcomes have achieved an average score of 67.5 or value is above the minimum of thoroughness criteria (KKM) 65 and the percentage of classical completeness reached 83.33% of the standard 75%.
Problem-based learning of teaching aids Development “linear program board” in improving student learning outcomes
Authors: Wardi Zaotul , Hidayah Nurul
Published: July 2020

The purpose of this study is to improve student learning outcomes using PBL-based PAPROLIN teaching aids on linear program material. This research is research reseach and development (RnD). Then the object in this study is the PAPROLIN teaching aids and the PAPROLIN teaching aids manual, lesson plans and instruments used for research. Data collection techniques in the form of student response questionnaires, product validation by experts, subject teachers and learning outcomes tests. The results of the PAPROLIN teaching aid guidebook assessment by material experts are a total score of 89 with an average value of 44.5 in the range of 74.76 <X ≤ 92.28 so that validity is categorized well, while the assessment of the PAPROLIN teaching aids manual by the subject teacher is 86 with an average value of 43 in the range of 74.76 <X ≤ 92.28 so that validity is in the good category. As for product trials that are carried out in two stages, namely small-scale trials and large-scale trials, where the results of small-scale trials are 22.22% and large-scale trials are 61.09%. So it can be concluded that PBL-based paprolin teaching aids can improve mathematics learning outcomes in LINEAR PROGRAM subjects
The Card Logic Logarithm as an Interactive Media in Teaching Logarithm: a Development Study
Authors: Satriawan R , Endriana N , Irianto F A , Ahyan S
Published: July 2020

This study aimed to develop an interactive media namely card logic logarithmic (CLL) that are valid, practical and have the potential effect of increasing student interest and learning outcomes in learning logarithm in Senior High School. The developmental research method by Van den Akker used in this study, with a formative evaluation by Martin Tessmer. The Jan Van Den Akker’s method consists of three stages, namely preliminary research, prototyping stage, and formative evaluation. Based on the results, it was found that: (1) the CLL media have been produced for teaching logarithm which are valid, practical, and effective; (2) the CLL media have been assessed by validators with a validity value of 4.54 with a valid category; (3) the CLL media have been assessed by validators with a practical value of 4.28 in the very high category; and (4) the CLL media in the aspect of effectiveness based on the learning outcomes test showed 87.1% of students scored above the standard.
The Development of Constructivist-Based Junior High School Mathematic Worksheet (LKS) on the Polyhedron
Authors: Reflina
Published: July 2020

The LKS(worksheets) that are used in schools generally only contain questions, so they have not helped the students in constructing mathematical knowledge. Therefore, constructivist-based LKS is developed for learning mathematical knowledge. This study aimed to develop constructivist-based LKS on the subject of Polyhedronand to see the validity of the produced worksheets. This research was a research development using a 4-D model. This model consists of the stages of define, design, and disseminate. Data collection was carried out through validation and trial of the developed LKS. Validation was carried out by 3 validators who are experienced in their fields and the trials were conducted on grade seventh of SMP Negeri (Public Junior High School) 1 Kubung to determine the practicality and effectiveness of the LKS. This study produced constructivist-based LKS on the subject of Polyhedron. The validity of the LKS was categorized as very valid. Validity test that was carried out consisted of several aspects, namely aspects of content / material, form / presentation and language / legibility. The validation results showed that theLKS was very valid with an average value of 3.42. The practicality test results in aspects of the attractiveness of the LKS to student interest, ease of use and content, and the efficiency of time showed this constructivist-based LKS was very practical for students and teachers with an average value of 89.14% and 79.25%.
The Role Of Mathematical Literacy To Improve High Order Thinking Skills
Authors: Maslihah Siti , Waluya S.B. , Rochmad  , Suyitno Amin
Published: July 2020

Mathematical literacy is the ability of individuals to formulate, use, and interpret mathematics in various contexts. NCTM has formulated 5 competencies in mathematics learning, namely mathematical problem solving, mathematical communication, mathematical reasoning, mathematical connection, and mathematical representation. These five abilities are included in mathematics literacy abilities and must be possessed by all students. High-level thinking is a thought activity that includes aspects of problem solving, critical, creative, metacognitive to achieve certain goals, which in the domain of Bloom’s Taxonomy conducts the analysis, synthesis and evaluation of a problem. The ability of mathematical literacy will encourage students to be able to think at a high level because in mathematics literacy students will be required to use all critical and creative thinking to be able to formulate and interpret mathematics in various contexts so that the highest level of mathematical skills (level 6) can be achieved.
Analysis of Students’ Creative Thinking Skill in Solving Algebra Problem
Authors: Nugroho Sri Wahyu Purnomo , Riyadi  , Triyanto
Published: July 2020

This study aimed to describe the students’ creative thinking skill in Junior High School to solve the problems in two-variable linear equations system. The indicators of creative thinking skill included fluency, flexibility, and novelty. This research was a qualitative descriptive study with 8 students in SMP N 4 Playen Gunung Kidul as the subject. The data collection used in this research was tests that were adjusted to some indicators of creative thinking skill. Researchers also conducted validated interviews by using triangulation methods. The results showed that 12.5% of students conformed with two indicators of fluency and novelty (it could be categorized as creative), 37.5% of students conformed with one indicator of flexibility or novelty (it could be categorized as adequate creative), and 50% of students conformed one indicator of fluency (it could be categorized as less creative). Based on the results, it could be concluded that most of students were categorized as less creative. This was caused by the difficulty of students in changing the story questions into mathematical form, misunderstanding of algebraic concepts, and lack of practice working on problems that refers to students’ creative thinking skill. Therefore it was necessary to emphasize the understanding of algebraic concepts and the appropriation of questions based on the students’ creative thinking skill.
The Learning Tools development of Rectangular and Square Material Oriented toward the Learning Cooperative Setting and included Bruner Theory on Students
Authors: Rusdi T M. , Djafar Hamsiah , Latuconsina Nur Khalisah , Suaidah Idah , Pamungkas Megita Dwi , Kusumayanti Andi
Published: July 2020

The purpose of this study is to produce valid, practical, and effective mathematics learning tools on rectangular and square material which oriented toward cooperative setting learning and included Bruner’s theory in VII grade students of State MTs of Bontotangnga, Bulukumba Regency, South Sulawesi. This type of research was a research and development that produced learning tools consisting of Lesson Plan (RPP), Handout (BS), and Student Worksheet (LKS). The subject in this research was 25 students of VII grade of State MTs of Bontotangnga Bulukumba regency, South Sulawesi in the academic year 2018/2019. The mathematics learning tools development, which used, refered to the Thiagarajan 4-D model. The learning development approach system carried out includes 4 stages such as, define, design, develop, and disseminate. The data collection instruments were the learning device’s validation sheets that aimed to obtain the experts and practioners validation data regarding the Lesson Plan (RPP), Handout (BS), and Student Worksheets (LKS). The student activity observation sheet aimed to obtain student activities data during the learning process by using cooperative setting learning tools which included Bruner’s theory that have been developed. Meanwhile, the learning outcomes tests aimed to measure the cognitive aspects of students in the form of a description test. The data analysis technique used was validity, practicality and effectiveness data analysis. The results showed that: (1) Lesson Plan (RPP) and Student Worksheet (LKS) were categorized as very valid. Meanwhile, the Handout (BS) were categorized valid, (2) Practical, based on the observations, the learning device was well-implemented in the trial process, and (3) effective. Hence, this has fulfilled the three criteria such as, the effective student activity, the responses toward the positive learning, and mastery learning classically achieved.
Calcium phosphate nanoparticles as intrinsic inorganic antimicrobials: mechanism of action
Authors: Wu Victoria M , Huynh Eric , Tang Sean , Uskoković Vuk
Published: July 2020

This is the final report of the study aimed at assessing the antimicrobial activity of calcium phosphate (CP) nanoparticles delivered in the form of hydroxyapatite (HAp) or amorphous CP (ACP) and understanding the fundamental principles behind their mechanisms of action. Not responding to propidium iodide and causing no gross morphological changes except moderate stress-induced filamentation in Escherichia coli (E. coli), CP nanoparticles were shown to be bacteriostatic, not bactericidal. Also, the lack of expression of genes involved in DNA repair indicated no genotoxic activity. In contrast, the softening of amide infrared bands and the partial dissociation of lipopolysaccharide structures comprising the membrane of Gram-negative Pseudomonas aeruginosa (P. aeruginosa) was detected in a vibrational spectroscopic analysis of the nanoparticle/bacterium interaction. Similarly, the inhibition of the growth of Staphylococcus aureus (S. aureus) was paralleled by a reduced integrated intensity and the softening of the C = O ester carbonyl stretch in lipoteichoic acid, a major component of the Gram-positive cell membrane. Electron microscopy analyses confirmed that changes to the cell membrane are a major mode of action of CP nanoparticles. While HAp got internalized by E. coli significantly more than ACP, the membrane damage was more pronounced in ACP-treated bacteria, which was explained by the higher surface reactivity of ACP. HAp nanoparticles decreased the activity of overexpressed efflux pumps in methicillin-resistant S. aureus, suggesting that they may hijack these pumps and use them to enter the cell without producing any visible damage to the membrane, thus acting on the cell from the inside out, as opposed to ACP, whose action is mostly external in mechanism. This may explain why HAp, unlike ACP, suppresses the mechanisms of resistance in methicillin- and multidrug-resistant S. aureus and P. aeruginosa, respectively. The findings of this study will be essential in the optimization of these nanoparticles for becoming an alternative to less biocompatible inorganics and small molecule antibiotics in the global effort to curb the rising resistance of bacterial pathogens to the existing therapies.