bluuebunny/crossref_metadata_2025_split huggingface dataset:
The measure strength of predictive in the poisson regression model with regression correlation coefficient case study of maternal mortality rate in Central Java Province in 2015
Authors: Nisa K , Nurrohmah S , Novita M 
Published: January 2021

Abstract
RCC which stands for regression correlation coefficient is an alternative measure strength of predictive that can be applied to the GLM model in which the distribution of response variable is not only normal. The RCC is constructed based on the definition of correlation coefficient by using generalized linear model (GLM). So, the RCC can be defined as a value that states the strength of the relationship between response variable Y and its conditional expectation given predictor variables E[Y|
X
]. The RCC is one measure of predictable power that can satisfies the property like applicability, interpretability, consistency, and affinity. In general, the explicit form of RCC on GLM is difficult to find. However, when RCC is applied to the Poisson regression model and the predictor variables are assumed to be a normal multivariate distribution, an explicit form is found. This explicit form still contains the unknown parameters derived from the Poisson regression model. Therefore, we need to find an estimate of these parameters to obtain an estimator from the RCC. The Poisson regression model which still contains the unknown parameters are estimated using maximum likelihood method. Application of regression correlation coefficient is done in case of maternal mortality rate in Central Java Province in 2015.
Analysis of factors affecting employee loyalty of PT X in Jakarta region
Authors: Karimah R P , Abdullah S , Setiadi R 
Published: January 2021

Abstract
Having loyal employees, i.e. those who desire to do their best in their work to achieve the company’s target, is important for the company. This study is conducted to identify factors that explain loyalty of employees in PT X, Jakarta. Furthermore, we also aim to generate profiles of the most loyal employees. Questionnaires were used to collect data from the central office and 12 branches of the company, using purposive sampling scheme, giving 467 respondents in total. Data processing was conducted using Partial Least Square (PLS) and Classification and Regression Tree (CART) methods. The results showed that job satisfaction and gender directly influence employees’ loyalty. Moreover, physiological needs, safety needs, love needs, and self-actualization needs indirectly influence loyalty of employees through job satisfaction. Highly loyal employees are those with either high job satisfaction and low physiological needs or low job satisfaction and low level of love needs.
Laterality condition analysis on non-arteritic anterior ischemic optic neuropathy patient in one of the hospital in Jakarta with medical data mining
Authors: Unggul D B , Abdullah S , Rachman A 
Published: January 2021

Abstract
Non-arteritic Anterior Ischemic Optic Neuropathy (NAION) is a disease caused by blood shortages in the artery that supplies the optic disc. Risk factors for NAION are hypertension, obesity, diabetes, dislipidemia, smoking, hypercoagulable state, cardiovascular disease, and stroke. NAION can result from unilateral or bilateral conditions. This study will focus on the identification of important factors that could distinguish characteristics between unilateral and bilateral patients. Random forest method is applied to obtain factors that can consistently distinguish characteristic between each laterality condition. Decision trees and the logistic regression method are added to obtain the visualization of the role of each important factors in the form of classification tree and the risk comparison of patients for experiencing a certain laterality condition by using odds ratios. The important factors based on random forest model are onset, fasting blood glucose levels, high density lipoprotein levels, age, two-hour postprandial glucose levels, and low density lipoprotein levels. Based on the odds ratio, advancing age and high density lipoprotein levels will decrease the risk of patients experiencing bilateral condition; on the other hand, the risk of bilateral condition will increase if other important factors are also increased.
Quota-share and stop-loss reinsurance combination based on Value-at-Risk (VaR) optimization
Authors: Putri A D , Nurrohmah S , Fithriani I 
Published: January 2021

Abstract
Every insurance companies have a capacity limit related to the maximum claim that can be borne. Therefore, insurance companies need to reinsure risks to reinsurance companies. Besides of quota-share, types of reinsurance contracts that commonly used is stop-loss. The quota-share reinsurance premium is proportional based on the amount claim that is covered, but not safe against a large claim. While for stop-loss, the reinsurance premium is relatively large but safe for a large claim. So, this paper combines both types of reinsurance to cover the shortcomings with their respective strengths. After being combined, it is necessary to determine the optimal quota-share proportion and stop-loss retention. One criterion of determines optimal proportion and retention is based on Value-at-Risk (VaR) optimization. With the reinsurance premium as a constraint, this optimization problem is solved for each type of reinsurance combination, be it quota-share before stop-loss or stop-loss before quota-share. From each of these types combinations, the result is optimal quota-share proportion and stop-loss retention, so as produce a minimum VaR value from the borne risk by insurance companies. by comparing the results of VaR optimization of these combinations, stop-loss before quota-share is obtained resulting in a more minimum VaR value.
Prediction of the reported but not settled (RBNS) claims reserves and the incurred but not reported (IBNR) claims reserves using the double chain ladder method
Authors: Addini F F , Nurrohmah S , Fithriani I 
Published: January 2021

Abstract
An insurance company is required to set up a claims reserve to pay claims reported by the policyholders. There are two types of claims reserve: Reported but Not Settled (RBNS) claims reserve and Incurred but Not Reported (IBNR) claims reserve. Insurance company predicts a claims reserve using run-off triangle data. There are two types of data in a run-off triangle: claims amount and number of claims. The Chain Ladder (CL) Method is often used to estimate the claims reserve. In CL method, the claims reserve determined using the run-off triangle claims amount by calculated development pattern from the data and then calculated a predictive value of the claims reserve using that development pattern. But CL method unable to estimate the RBNS and IBNR reserves separately. The method used in this paper is closely related to CL method and is called a Double Chain Ladder (DCL) method. The DCL method applies the CL algorithm to two run-off triangles, the run-off triangle of claims amount and number of claims. The additional information from the run-off triangle of the number of claims enable the DCL method to estimate the RBNS and IBNR reserves separately. Based on numerical application, claims reserves obtained from CL and DCL methods are significantly different when there are many zero values in incremental run-off triangle.
Assessment of Indramayu batik based on Outstanding Universal Value (OUV) and Geographical Indications (GI)
Authors: Maiyang F , Taqyuddin  
Published: January 2021

Abstract
Batik is an Indonesian cultural heritage that has been known since the early 19th century until now. Batik art in each region can be seen from the manufacturing process, batik quality, ornament, and color arrangement. A product to be crowned a world heritage needs to meet the criteria for Outstanding Universal Value (OUV) that has been set by UNESCO and Geographical Indications (GI) by the Directorate General of Intellectual Property Rights. This study discusses which ornaments of Indramayu batik represent the production area the most, then Indramayu batik is assessed on two grounds, namely Outstanding Universal Value (OUV) and Geographical Indication (GI). Also, with this assessment, it can be seen that spatial patterns formed from the results of the assessment of Indramayu batik based on OUV and GI. This study used a qualitative method in which the data collection was carried out through interviews using a list of questions to representatives of Indramayu batik business owners and Indramayu batik craftsmen spread across 22 locations of Indramayu batik producers. The results of this study are sekar niem and kapal kandas ornaments get the highest value based on OUV and GI, while merak berunding, liris, parang teja, and banji are the ornaments with the lowest value.
Analysis of pre-service biology teachers’ metacognitive skills on invertebrate zoology
Authors: Madang K , Tibrani M M , Santoso L M 
Published: January 2021

Abstract
This study aims at obtaining pre-service biology teachers’ metacognitive skills in invertebrate zoology. A number of pre-service biology teachers that take invertebrate zoology course at a state university in Sumatera, Indonesia, were involved as participants in this study. Data on metacognitive skills were collected using metacognitive skills instrument test that have been developed. The data obtained were processed by calculating the percentage (%) for each indicator of metacognitive skills. Results show that the value of pre-service biology teachers’ metacognitive skills on invertebrate zoology are 4.86. For each indicator of metacognitive skill composition were no logic, no systemic, no analyse/evaluate/create (64.56%); no logic, no systemic, less analyse/evaluate/create (31.60%); no logic, no systemic, have analyse/evaluate/create (2.53%), and no logic, have systemic, have analyse/evaluate/create (1.27%). Based on the results of this study, it is suggested that pre-service biology teachers’ metacognitive skills in invertebrate zoology was very low. In order to repair pre-service biology teachers’ metacognitive skills, it is needed revision on instructional strategies for invertebrate zoology course.
Problem-based learning (PBL) and blended learning in improving critical thinking skills and student learning activities in biochemistry courses
Authors: Yennita Y , Zukmadini A Y 
Published: January 2021

Abstract
This study aims at improving students’ critical thinking skills and student learning activities in biochemistry courses. The efforts in improving critical thinking skills are carried out by applying the problem-based learning model using “blended learning” method. Blended learning method is implemented by integrating the face-to-face learning with online learning into the syntax of problem base learning. Face-to-face learning is done in the classroom, while the form of online learning is done by utilizing internet facilities and online discussion forums. Data from observations of learning activities are also calculated using a range of values that appear and determine the criteria. The results showed that the percentage of students’ critical thinking skills in the first cycle was 52.29% (quite critical), while in the second cycle it increased to 64.43% (critical). The teaching activities of lecturers in the first cycle and the second cycle were 36 (good category). Student learning activities in the first cycle is 35 (good category) and in the second cycle is 34 (good category). The conclusion of this study is the application of problem-based learning (PBL) using the blended learning method can improve critical thinking skills and student learning activities in biochemistry courses.
Students’ scientific articles writing ability based on lacertilia inventory results in the conservation area Bengkulu University
Authors: Karyadi B , Astuti A P , Listiono A E , Sundaryono A , Ruyani A 
Published: January 2021

Abstract
Writing scientific articles is a problem for teachers especially in elementary, junior and high school levels. This study aimed to determine student ability to write scientific articles based on the results of lacertilia suborder inventory in the conservation area of Bengkulu University. This study used Research and Development method. Participants in this research was teachers who being students of graduated school of science education on 2018 academic year who enroll biology environment subject. Students in 7 groups has made 7 articles based on lacertilia inventory research. From the scientific articles writing, there are 7 indicators that indicate in good score, including the ability to write title, identity, article components, abstracts, introduction, results and discussion, and conclusions with highest average score as much as 3.42 in ability to write results and discussion, and lowest average score as much as 2,14 in ability to write method.
Lesson study at Bengkulu Iqro IT High School to improve learning outcomes and the role of teachers in supporting Biology learning
Authors: Zukmadini A Y , Rochman S 
Published: January 2021

Abstract
Iqro IT High School is one of the high school level schools based on Islam in the city of Bengkulu. This study aims to improve the learning outcomes of class XI students and enhance the role of teachers in enhancing collaborative biology learning. This type of research is action research conducted using the lesson study method. Lesson studies are carried out collaboratively by involving the roles of teachers, peers, and lecturers. Lesson study activities carried out in two open lessons, where each open lesson consists of 3 sessions namely plan, do, and see. The instrument used in this study was the observation sheet of the implementation of lesson study and the test sheet of learning outcomes. The results showed an additional increase in the study of lessons from open lesson 1 to open lesson 2. In addition, there was also an increase in learning outcomes from open lesson 1 to open lesson 2. The conclusion of this study is that lesson study can help teachers to enhance their role in teaching and learning and be able to improve student learning outcomes in biology subjects.
Lesson study stimulated students critical thinking in Cell Biology courses
Authors: Hidayat T , Santoso S 
Published: January 2021

Abstract
The purpose of this study is a lesson study joint learning forum for mutual learning from experience in order to stimulate critical thinking of students in the Cell Biology course in the Biology Education Study Program FKIP Muhammadiyah University of Bengkulu. This research is an action research with a qualitative-descriptive approach carried out for 4 cycles. The stages of the lesson study are learning planning (plan), Implementation of learning (Do) and Reflection (See). The results showed that students critical thinking skills in learning Biology Cells through the implementation of lesson studies gained an average score of 85% in either category. The development of the ability to manage classes that have been done through the implementation of lesson studies to stimulate students’ critical thinking has increased.
Domain-specific critical thinking skills: Designing and analysis the instrument test on thermochemistry
Authors: Nursa’adah E , Sari D , Affifah I 
Published: January 2021

Abstract
Chemistry learning needs an assessment to evaluate ways of students’ thinking. One them is critical thinking skill test. The purpose of this study is designing domain-specific critical thinking (DS-CT) skill on thermochemistry concept. There are 29 DS-CT Skills test to measure students’ DS-CT skills. Content Validity Ratio (CVR) and Confirmatory Factor Analysis (CFA) were evaluated to analysis the validity of DS-CT Skills test. Cronbach’s Alpha evaluated to analysis the reliability. Research and Development was used as research design. The participants of this study are 185 senior high school students in Cilegon-Banten-Indonesia. Data are obtained from expertise judgment, empirical test, and interview. The results showed that validity of DS-CT skills test on thermochemistry concept based on CVR and CFA is 0,723 (good criteria). Cronbach’s Alpha test showed 0,652 (high criteria). It can be conclude that this DS-CT Skills test is feasible to measure students’ DS-CT skills on thermochemistry domain knowledge. Students’ CT skill on domain thermochemistry are 46% on present and provide arguments, 27% make and assess claims, and 21% analysis arguments.
Application of fractal principles in redesigning an arabic calligraphy and rafflesia flower motif in Batik Besurek
Authors: Mayasari Z M 
Published: January 2021

Abstract
Batik besurek is one of Indonesia’s cultural heritages from Bengkulu Province. This batik is different from another batik in general because it has the characteristics of Arabic calligraphy. There are seven types basic of motifs in batik besurek, one of them is the Arabic calligraphy motif. In this paper explained the development of the pattern of the Arabic calligraphy and rafflesia flower motif in batik besurek. The pattern development is done by applying the fractal principles. The results is a new motif of batik besurek that are expected to enrich the style, shape, diversity of motifs, and enhance the beauty and selling value of the batik itself.
Critical thinking ability through student worksheet development based on Missouri Mathematics project learning model using think talk write
Authors: Efuansyah E , Wahyuni R 
Published: January 2021

Abstract
This study aims to describe the mathematical critical thinking skills of class VIII students through the development of Student Worksheets based on the Missouri Mathematics Project learning model using Think Talk Write strategies. This research was conducted at junior high school number 11 Lubuklinggau in the Even semester of the 2018/2019 school year with research population were all students of class VIII at junior high school number 11 Lubuklinggau. Data collection technique used was a test technique to measure students’ critical thinking skills on the material of Cubes and Cuboid. While the data analysis uses descriptive qualitative analysis. Based on the results of data analysis, it was found that the average percentage of students’ thinking abilities in class VIII was 76.97 and was in the Good category.
The influence of computer-based Multimedia materials on learning outcomes of class VII students on the set material in SMP N 6 Bengkulu Selatan
Authors: Syafri F S , Sari I T S , Isran D 
Published: January 2021

Abstract
This research is a quantitative study aimed at knowing the multimedia teaching materials based on SMP 06 Kota Bengkulu in the results of mathematics learning. Sampling in this study used random sampling techniques with a research sample of 20 class VII. The collection of data used in this research is poll and test. Data in the study was further analyzed using Test T, based on the results of the analysis came to the conclusion that computer-based multimedia teaching materials have a positive influence on the results of the mathematics of students in SMP N 06 Bengkulu South.
Analysis of junior high school students ‘capability on completing mathematical problems of the PISA model using the Lubuklinggau context reviewed from the PISA level
Authors: Elly A , Rosalina E 
Published: January 2021

Abstract
This study aims to describe the ability of junior high school students to solve PISA mathematical problems using the Lubuklinggau context in terms of the PISA level. The subjects in the study were students of class IX.5 Middle School 5 Lubuklinggau. The method in this research is descriptive qualitative method. The instruments and data collection techniques used were test sheets and questionnaires as well as interview guidelines. Data analysis of data through 3 channels, namely data reduction, data presentation, and drawing conclusions. The results obtained indicate that the level I PISA Problem in the category is excellent with an average value of 91.07, level II in the category is excellent with an average value of 91.96, level III in the good category with an average value of 72.45, level IV in the good category with an average value of 61.61, level V in fair category with an average value of 58.16, and level VI in poor category with an average value of 38.10.So it can be concluded that the ability of class IX students of SMP Negeri 5 Lubuklinggau in solving mathematical problems using the PISA model Lubuklinggau context in terms of PISA level is included in both categories with an overall average value of 68.89.
Problem-based learning model to improve mathematical reasoning ability
Authors: Mandasari N 
Published: January 2021

Abstract
Reasoning ability is very important to note because it is able to train students’ thinking activities to be able to solve mathematical problems. This ability is also a benchmark in determining student achievement in the field of mathematics, one of which is in the international event TIMSS and PISA. However, the competitiveness of Indonesian students is still very low compared to other countries. This can be caused by the lack of giving questions that practice the ability of reasoning by the teacher. Therefore, there is a need for improvement in the process of learning mathematics. In the learning process, students should be given the opportunity to explore all their potential. The teacher can offer problems that are able to train and develop mathematical reasoning abilities. Problem-based learning is problem-centered learning. Problems given can be related to real-life students and can practice the ability to reason and solve mathematical problems.
Development of students’ worksheets based on a scientific approach for set concept in grade VII Junior High Schools 10 Bengkulu City
Authors: Wulandari S , Syafri F S 
Published: January 2021

Abstract
This research is to develop a mathematics learning tool for Student Worksheet (students worksheets) based on a scientific approach that is valid, effective, and practical. The research method used is the development research with the Plom Model consisting of 3 stages, namely the initial investigation phase (preliminary research), the development phase or making a prototype (development or prototyping phase), and the assessment phase (assessment phase). The subjects of this study were students of class VII SMP 10 Bengkulu city consisting of 32 students. Data collection techniques in the preliminary stage are document analysis, while the formative evaluation stage is walk through, observation, and students worksheets tests. The results of this study are in the form of products, namely: Student Worksheet (students worksheets). The results showed that the students worksheets in the valid category based on the score obtained 3.50 was stated to meet the criteria, for practicality tests a score of 3.55 met the criteria stated practical, whereas for the effectiveness test a score of 83 had met the completeness criteria, so it can be said that the learning kit students worksheets mathematics based on a scientific approach to class VII material can already be used.
Improving monoid concept understanding ability through problem posing learning model at abstract algebra course
Authors: Yumiati Y , Haji S 
Published: January 2021

Abstract
This study aims to improve the ability to understand monoid concepts through Problem Posing learning. The method used is a quasi-experiment. The research design used was pre-test post-test group design. The research sample was 32 undergraduate students of the Mathematics Education Study Program FKIP Universitas Bengkulu at the Algebra Abstract course of even semester of 2018-2019 academic year. The instrument used was a 4 item test about the concept of monoid. Data were analysed qualitatively and quantitatively. The results of the study are as follows: 1) an increase in the ability to understand the monoid concept of students by 0.67, including the medium category; 2) the achievement of the ability to understand the monoid concept is 74.75 in the high category. The results of this study have implications for the importance of the role of questions in learning mathematics.