Indonesia Conference Directory

Corresponding Author
Dewa Ayu Putri Sri Masyeni

Institutions
Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
The increases prevalence of obesity is due to the instant diet of children cause of globalization. The aim of this study was to determine the relationship between junk food consumption with child obesity. This study was conducted on 175 pupils which age 9-12 years old and has parents with no history of obesity in West Denpasar District using analysis cross sectional approach. Obesity determined as BMI by age more than Z score 2 while junk food consumption determined as consuming low-nutrient foods contained fat and soft drinks at least once a week. The collected data analyzed with SPSS 21 using Chi-Square test for relationship of junk food consumption and child obesity whereas multiple logistic regression analysis to controlled the influences of variables parents-s education, parents-s income and child-s physical activity. Prevalence of obesity was found 18,3% which 21 pupils found with obesity was consuming junk food, while 11 pupils found with obesity wasn-t consuming junk food. The result was showed as follow: relationship between junk food consumption with child obesity was positive significance (p <0,05), OR 2,56 and IK 95% 1,15-5,72. After controlled with another variables, the relationship still significant with Adjusted Odd Ratio 0,32. It can be concluded that there was relationship between junk food consumption and child obesity.

Keywords
junk food, risk factor, obesity

Topic
Biology

Link: https://ifory.id/abstract/gYtN3GH2fqyU

Corresponding Author
Dewa Ayu Putri Sri Masyeni

Institutions

Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
Breakfast is a meal in the morning, shortly after waking up to 10 (ten) AM. This activity has a purpose to fulfill the body nutrition in the morning before starting the activity. Breakfast is considered important for a pupils which sometimes has a very solid activity in school. In addition, in the academic process pupils need to be in a healthy body condition and have good attention and concentration to catch all the lessons in school. The aim of this research was to find out the correlation between breakfast with the level of concentration in elementary school-s pupils in Denpasar City 2017. The research design was descriptive analytical through cross-sectional approach which was analyzed using Chi-Square statistical test by Statistical Package for the Social Sciences for Windows 16.0 (SPSS) program. The research data was primary data gathered with questionnaire form. The amount of the subjects were 96 persons which was selected using multistage cluster random sampling method to an elementary school-s pupils in Denpasar City. The percentage of non-breakfast subject was 35 persons (36,5%) and the breakfast subject was 61 persons (63,5%). The percentages of Concentrations level of breakfast pupils were divided in three categories which were Low (11,48%), Medium (65,57%) and High (22,95%). The result was showed that there was a significant relationship (p<0,05) between breakfast with the level of concentration. The conclusions could be drawn that there was a positive mild relationship between the two variables. It was recommended that this research can contribute as a source of information and evaluation for the development of science in the future.

Keywords
Concentration, Breakfast, Pupils, Elementary School,

Topic
Biology

Link: https://ifory.id/abstract/FrEatHDb2JLm

Corresponding Author
Dewa Ayu Putri Sri Masyeni

Institutions
Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
Dysmenorrhea or stomach pain every menstruation is common symptom of adult women. Primary dysmenorrhea usually occurs about 2 years after menarche and which age about ±20 years. There are many incidence of dysmenorrhea. Physical fitness is one of the factor that affect the occurrence of dysmenorrhea. This aims of the study to determine the percentage of dysmenorrhea and correllation to physical fitness. The method of this study was csross-sectional. The study was conducted 71 female people of SMP Negeri 3 Gianyar. The physical fitness was measured using Tes Kesegaran Jasmani Indonesia (TKJI) and dysmenorrhea data using questionnaire. The data was analysed using Somersd tes. The result was follow the physical fitness with very low category 6 (8,5%), low category 36 (50,7%), average category 25 (35,2%) and good category 4 (5,6%). The percentage of dysmenorrhea was 56 (78,9%) and not dysmenorrhea was 15 (21,1%). The result of this study indicated there was significan correllation between physical fitness with dysmenorrhea (p<0,005).

Keywords
Dysmenorrhea, Physical Fitness

Topic
Biology

Link: https://ifory.id/abstract/FAVTaBtPWbmx

Corresponding Author
RINI SETIATI

Institutions
Petroleum Engineering, Faculty of Earh Technology and Energy, UniversitasTrisakti, Jakarta

Abstract
In drilling operation there are two important matters that must be considered, which are the pumps and drillingfluid rheologythat are influencing hydraulics drilling system.The major function of drilling fluid is to lift the drill cutting to the surface and still maintain the drilling hole to avoid an encounter.Evaluation of hydraulics drilling for bottom hole cleaningwill count theparameter successwhich influence in removal of cutting to the surface for bottom hole cleaning and optimization drilling calculation hydraulics. The velocity of drilling fluid in annular, the flow that is formed and the ability of bottom hole cleaning are highly influenced by specifications of mud pump as a resource power for mud to flowthat also will determine how the value of flow rate can be circulated.Mud rheology,PV, YP and MWwill influence the performance of mud to carry cutting on drilling operation. The success of the bottom hole cleaning of drilling wells evaluated based on the calculation of hydraulics drilling at every depth and inclination changes while also review the parameters of Cutting Transport Ratio (Ft), Cutting Concentration (Ca), Cutting Carrying Index (CCI), Particle Bed Index (PBI) andoptimizatio of hydraulics drilling system. Q optimum is very influential on the value of bit hydraulic horse power (BHHP) and surface horse power (HPS) that provide more optimized power to pump the mud withminimize the effect of pressure loss.

Keywords
Bit hydraulic horse power, Surface Horse Power, Pressure Loss, Cutting Removal

Topic
Material Engineering

Link: https://ifory.id/abstract/FvGbxTKHaXCZ

Corresponding Author
RINI SETIATI

Institutions
Geology Department, FTKE, Universitas Trisakti

Abstract
A new thinking of gas play in Tawun formation East Java Basin is a result of an integrated research of mud volcano from surface to subsurface data, overpresured and Hele-Shaw analog modeling. The presence of methane gas seepage in the mud volcano proves the existence gas associated with mud and overpressured zones. Analysis of C isotope of samples of gas seepage of mud-volcano indicate thermogenic methane gas at the level of thermal maturity equivalent to the peak of petroleum formation. The overpressured mud zone has a potential to be an unconventional gas reservoir with high gas storage capacity. Mud-gas-play is defined as the accumulated gas which is trapped in the overpressured zone. Gas accumulations have a tendency to be concentrated upper part of overpressure zone. Type of the reservoir and how the gas storage are the differences from the conventional of gas play concept. Reservoir geometry of mud-gas-play is a chamber shaped which cross sediment layer. Gas is trapped in rocks with very low bearing capacity which have high pressure. Two mechanisms of gas trapped in overpressured shale are dissolved and adsorbed. The gas storage capacity of the mud based on adsorption analysis at temperature 65 degree celcius ranges from 812 scf/ton up to 3,217 scf/ton. The unconventional gas reservoirs of overpressured mud zone is proposed as a new hydrocarbon play: mud-gas-play (MGP).

Keywords
mud volcano, overpressured, adsorption, mud gas play

Topic
Material Science

Link: https://ifory.id/abstract/K8Xqg3QPmzb6

Corresponding Author
Dewa Ayu Putri Sri Masyeni

Institutions
Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
The elderly population in Indonesia has increased significantly as indicated by the increasing average life expectancy of Indonesians in the last decade , from 69.1 years (2005) to 70.1 years (2015). In Indonesia, rheumatism ranks 2 of the top 10 health problems of the elderly. Gianyar District Health Office report in 2013, mentioned that the number of rheumatic visits was ranked 3rd out of 10 major diseases at health care. This study aims to determine the level of knowledge, attitudes and behavior of elderly against rheumatic diseases in Samplangan Urban Village, Gianyar District. This study uses descriptive quantitative design with cross-sectional approach.Respondents in this study of 106 elderly are recorded in Banjar Bukit Batu and Selat, Samplangan Village Gianyar. In this study the sample was selected using simple random sampling. Data collection did by direct interview and using questionnaires that has been valid to the respondent. The results obtained that generally the level of knowledge of the elderly against rheumatic disease is still not good. As for the attitude and behavior of the elderly against rheumatic diseases are already in good category. Therefore expected that Samplangan Urban Village can provide further information or counseling about rheumatism to improve the knowledge and health status of the elderly.

Keywords
Elderly, Rheumatism, Level of Knowledge, Attitude, Behavior

Topic
Biology

Link: https://ifory.id/abstract/ckwduCyUrQMn

Corresponding Author
RINI SETIATI

Institutions
3Geological Engineering Department, Faculty of Earth Science and Technology, Trisakti University, Jakarta

Abstract
Salawati Basin has 0.5 BBO and 0.1 TCFG oil and gas resources respectively. Hydrocarbon is generated from Tertiary and Pre-Tertiary source rock. Several source rock studies have been conducted, such as in Sirga Formation (Late Oligocene), Kais Formation (Middle Miocene), and Klasafet Formation (Late Miocene). Lack of knowledge in characteristics and thermal modelling study or source rock in Sirga Formation and Pre-Faumai, also curiosity to observe basin reverse polarity occurence is intriguing to be researched further. The purposes of this research are to know: a.) Sirga Formation and Pre-Faumai Formation source rock characteristics to generate hydrocarbon in Salawati Basin; b.) Maturity values based on %Ro, Tmax and 1D basin modelling. Research methodology was carried out using petroleum geochmistry analysis, including: TOC, Rock Eval Pyrolisis, kerogen typing, vitrinite reflectance (%Ro) from 9 cutting samples. Based on TOC parameter, organic-rich materials in both formations show good to very good quantity. On the other hand, PY parameter shows fair to good potency quality as source rock to generate hydrocarbon. Kerogen type composition dominated NFA which indicates oxidizing marine or lacustrine depositional environment. Crossplots between HI and Tmax shows kerogen mixture type II/III which indicates transition environment (fluvio-deltaic) depositional environment. Sirga Formation and Pre-Faumai (Oligocene) show low level maturity based on %Ro and Tmax. On the contrary, based on 1D basin modelling maturity of the source rock on Warir-1X well and WIR-1A (outside research area) show higher level maturity (early to mid-mature) since Middle Pliocene and progressed into late maturity stage on oil generation since Early Pleistocene. Depocenter, generally act as mature kitchen where hydrocarbon generated. Basin polarity reversal occurred since Pliocene and changed basin configuration i.e depocenter from on southern area becoming on northern area

Keywords
Salawati Basin, characteristics, maturity, 1D basin modelling, basin polarity reversal

Topic
Material Science

Link: https://ifory.id/abstract/u2cvGpgdKPMY

Corresponding Author
I Gusti Bagus Udayana

Institutions
Faculty of Agriculture. Warmadewa University, Denpasar, Bali, Indonesia
*E-mail address: bagusudayana64[at]gmail.com

Abstract
Pinggan Village area is an area that has great horticulture and tourism potential. This area is located in District Kintamani Bangli Regency. Pinggan village is located in the highlands with an altitude of 900-1300 m above sea level and has the potential of horticultural commodities of squash, tomato and chilli. The current condition, about 30% of the product is wasted as waste (rotten or exposed to pests), bargaining farmers are weak, cultivation is not optimal, there are exarat supply because it is unable to compete with producers from Java. The proposed activities are for the development of horticulture based agroindustry in Pinggan sub-district of Kintamani sub-district with various activities The results of the research are expected to have a significant effect on the increase of income, thus increasing the access of households to family food. Physically, no puteran on the plate, will pilaru entangled papier. Besides, by increasing agro-industry activity and sustainable food house will have an impact on economic growth and job opening so that it will increase food security.

Keywords
Agroindustry, horticulture, derivative products, Kintamani, Sustainable Food House (KRPL)

Topic
Management Science

Link: https://ifory.id/abstract/MB4kx8pdjvfy

Corresponding Author
Yohanes Parlindungan Situmeang

Institutions
Agriculture Faculty, Warmadewa University, Jl. Terompong 24 Tanjung Bungkak, Denpasar-Bali, 80235, Indonesia
* Email: ypsitumeang63[at]gmail.com

Abstract
The purpose of this study was to determine the effect of biochar and compost fertilizer and their interactions on changes in the physical and chemical properties of soil and corn yields on dry land. This experiment used a randomized block design with factorial patterns. The treatment consists of two factors, namely: the dose of biochar and compost. The first factor, the dose of biochar consists of 4 levels, namely: 0 tons ha-1, 5 tons ha-1, 10 tons ha-1, 15 tons ha-1. The second factor, the compost dosage consisted of 2 levels: 0 tons ha-1 and 20 tons ha-1. The highest dry shelled seed per ha was obtained from the treatment of 10 tons ha-1 biochar which was 9.21 tons which increased by 35.56% compared to the lowest dry shelled seed per ha obtained from the treatment without biochar which was 6.79 tons . The treatment of compost doses of 20 tons ha-1 gave the highest value of dry shelled beans per ha, which was 8.73 tons, increasing by 16.58% compared to the lowest yield of dry shelled seeds per ha, which was 7.49 tons in the treatment without compost.

Keywords
bamboo biochar, compost, soil physical and chemical properties, corn plants

Topic
Biology

Link: https://ifory.id/abstract/LPCMjcTunvkQ

Corresponding Author
Johanes Pasaribu

Institutions
Post Graduated of Educational Technology
State University of Medan
Medan, Indonesia
Email: joe_jeremy[at]yahoo.co.id

Abstract
This study aims to find out, the learning outcomes of entrepreneurship between learners had taught with the Contextual Teaching and Learning strategy and the expository strategy type, the learning outcomes of entrepreneurship learners with high achievement motivation and learners with low achievement motivation, and the interaction between learning strategies and achievement motivation towards learning outcomes. Type of research method used quasi experimental 2x2 factorial design and followed by Scheffe-Test. The results of this study concluded: The entrepreneurship learning outcomes of the learners who were taught by Contextual Teaching and Learning strategies were higher than the expository learning strategies, the entrepreneurship learning outcomes of learners with high achievement motivation were higher than low achievement motivation and there was an interaction between the learning strategies and achievement motivation towards the learning outcomes. This means that Contextual Teaching and Learning strategies better teach learners with high achievement motivation and the learners with low achievement motivation are better taught by the expository strategies.

Keywords
Learning Strategies, Achievement Motivation, Learning Outcomes.

Topic
Vocational Education and Educational Technology

Link: https://ifory.id/abstract/LxrZuUGh6yF4

Corresponding Author
Lia Ardiansari

Institutions
Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
This paper reports an investigation of students understanding of distributive law used to facilitate students awareness of equations is an equivalent expression where each equation can be replaced by an equivalent equation. A total of 53 students from one secondary school were randomly selected to participate in the study using this cross-sectional approach. The results of the study indicate that the use of operation sense of students in understanding distributive law can be grouped into three levels where level 2 is the transition stage (i.e a pre-algebraic stage) from level 1 to level 3. Students who have been proficient in using distributive law in arithmetic, still have difficulty in applying it to algebraic manipulation. One of the causes of this difficulty is the lack of students understanding of the same sign as a sign of equality. In addition, the absence of parentheses also seems to be a stumbling block for students in recognizing distributive law. The reason for expanding the notion of the same sign by using distributive traits is to provide a foundation for their operation sense construction so as to provide further meaning for equations in algebra and minimize student difficulties in learning school algebra.

Keywords
operation sense, distributive law, pre-algebra

Topic
Mathematics Education

Link: https://ifory.id/abstract/XmpR8bkyr4zV

Corresponding Author
Jafar Sidik

Institutions
University of Langlangbuana, Bandung

Abstract
Asia and Pacific Countries have witnessed the growth of disputes settled by arbitration. The construction disputes have increased in a number of jurisdiction and seem to rise in the coming future. The rise of the disputes has touched a number of issues on the part of arbitration. These issues of enforcement of arbitration disputes. This article will discuss the role of BANI and IArbl in enhancing arbitration in ASEAN countries

Keywords
Role,BANI,IArbl,Arbitration, ASEAN

Topic
Law and Regulation

Link: https://ifory.id/abstract/BbgKvahzHVEq

Corresponding Author
Sang Ayu Made Putri Suryani

Institutions
(a) Aquatic Resources management department University of Warmadewa, Denpasar, Bali
Email: suryanip[at]rocketmail.com
(b) Aquatic Resources management department University of Warmadewa, Denpasar, Bali

Abstract
Fish seed quality may be decreased as a result of inbreeding that is a marriage between two individuals who have the same genetic trait. Improved seed quality can be done with the genetic approach to parent selection and crossbreed. Quality seeds which are taken from natural populations are determined by the genetic diversity of a population. Inbreeding can lower the quality of seed because it can increase the number of homozygosity and heterozygosity otherwise decrease the number.This study aims to determine differences in genetic variation three species of grouper groupers (Plectropomus maculatus, Plectropomus leopardus, and Plectropomus oligacanthus) and know the kinship of the three species of grouper. While the benefits of this research can provide information on genetic diversity in natural coral trout grouper, expected inbreeding can be avoided. Muscle and liver tissue was used as a sample for electrophoresis analysis with twelve kinds of enzymes are aspartate aminotransferase (AAT), Alcohol dehydrogenase (ADH), Estrase (EST), -Gliserofosfat dehydrogenase (-GPD), Glukofosfat isomerase (GPI), Isocitrate dehydrogenase (IDH), Lactate dehydrogenase (EST), Malic dehydrogenase (MDH), Malic Enzyme (ME), 6-phosphogluconate dehydrogenase (6- PGD), phosphoglucomutase (PGM), and sarcoplasmic enzymes (SP). Three polymorphic loci in Plectropomus oligacanthus species are 6-PGD, GPI-2, and PGM. In Plectropomus maculatus, and Plectropomus leopardus all monomorphic loci. The three polymorphic loci on Plectropomus oligacanthus meet the Hardy-Weinberg balance with X2 value for 6-PGD value is 0.123 for GPI-2 is 0.028. And PGM is 0.028. Plectropomus oligacanthus has a polymorphism level of 0.188, the total number of the focusing allele is 1,154, and the average heterozygosity is 0.023. The genetic distance between the sepsis population based on twelve enzymes showed between Plectropomus maculatus, and Plectropomus leopardus had a spacing of 0.134, between Plectropomus leopardus and Plectropomus oligacanthus of genetic distance 0.196 and between Plectropomus maculatus and Plectropomus oligacanthus the genetic distance was 0.200. The larger the genetic distance between the species, the kinship relationship will be farther away. The distant kinship is owned by Plectropomus oligacanthus.

Keywords
Genetic diversity, Grouper species, Plectropomus sp,

Topic
Biology

Link: https://ifory.id/abstract/NkEjzn6yPKCL

Corresponding Author
ARI SYAHIDUL SHIDIQ

Institutions
1Departemen Pendidikan IPA, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi no 229, 40154, Bandung, Indonesia

Abstract
Spectroscopy is part of modern chemistry, which allows chemists to study the structure and properties of atoms and molecules. Unfortunately, many pre-service chemistry teachers are not usually introduced to the basic principles behind this technique. The study aims to develop simple and low-cost spectrophotometers. Project-based learning was used in this study. The experiments fit well into an analytical chemistry course and take a standard (1 h) lab period. Low-cost spectrophotometers made by pre-service chemistry teacher have a fairly good sensitivity compared to modern spectrophotometers. Pre-service chemistry teachers have better knowledge about the spectroscopy, and the basic principles of the instrument after developing Low-cost spectrophotometers. In addition, the project activities also enhance the creative thinking skills of the pre-service chemistry teacher

Keywords
Laboratory tool, Spectroscopy, spectrophotometers

Topic
Chemistry

Link: https://ifory.id/abstract/L9V3UBFKv8xX

Corresponding Author
ARI SYAHIDUL SHIDIQ

Institutions
(a)Departemen Pendidikan IPA, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi no 229, 40154, Bandung, Indonesia

(b) Program Pendidikan Kimia, Universitas Sebelas Maret, Jl. Ir. Sutami No. 36A, Kentingan, 57126, Surakarta, Indonesia

Abstract
Identifying students learning difficulties and finding the effective ways of addressing them have been the two of major concerns in chemistry education. The aims of this study were to identify students learning difficulties in hydrolysis. A formative assessment post-test was administered to 151 students in grade 11 using testlet instrument to find out their learning difficulties. Its findings could provide the teachers with sufficiently valuable information required in order to adapt their teaching methods to the students needs for chemistry sustainable curriculum development. The instrument contained 30 items distributed across three themes: scientific reasoning, numeracy and scientific language literacy. The results indicated that the students held learning difficulties on numeracy. The students had difficulties in controlling and interpreting the data. The possible uses of teaching methods, targeted remedial teaching and testing using testlet instrument for addressing students learning difficulties were discussed

Keywords
sustainable development education, pre-service chemistry teacher, hydrolysis

Topic
Chemistry

Link: https://ifory.id/abstract/avJ4d3gnYBrZ

Corresponding Author
Muhammad Yusro

Institutions
1,2 Universitas Negeri Jakarta
3,4 Universitas Indonesia
5 University Clermont Auvergne, France

Abstract
This study aims to examine the single pole detection algorithm using a confusion matrix model which is a specific table that makes it easy to visualize the performance of an algorithm. The algorithm tested is the YuRHoS pole detection algorithm, a new algorithm developed by researchers to detect pole objects or not. Methods used is by calculating three aspects of algorithm performance in machine learning, namely sensitivity, specificity, and accuracy. The value of the three aspects of performance depends on four variables, namely true positive, true negative, false positive and false negative. The calculation process is done by matching the pixel detection region with the ground-truth region. The test results for ten different single pole images found that the YuRHoS pole detection algorithm is better than other algorithms on two measurement aspects, namely specificity, and accuracy. Excellence aspects of specificity obtained because of its ability in detecting the object instead of a pole. Excellence aspects of accuracy indicated because more accurate in detecting a pole. As for sensitivity aspects, both the detection algorithms are having the same reliability in correctly predicting a pole.

Keywords
pole detection algorithm, single pole, confusion matrix, machine learning, pixel matching

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/XHFCvBy4tKnc

Corresponding Author
Abdul Kholiq

Institutions
(a)Department of Educational Psychology and Guidance, Universitas Pendidikan Indonesia, West Java, Indonesia

(b)Science Education Department, Postgraduate School Universitas Pendidikan Indonesia, Jl. Setiabudi no 229, 40154, Bandung, Indonesia

Abstract
This study aims to determine the effect of epigenetic changes on differences in human behaviour. To support the research, researchers used the ex post facto method to 7 people from 7 provinces that varied their life experiences. The results show that epigenetic changes encourage neuron function so that human behaviour changes. Human behaviour is modified by epigenetic processes, namely the more experience in the past, human behaviour is more adaptive to lifes problems. This is due to the response process of neuroendocrine in dealing with stress which makes individuals more able to reduce stress by releasing the hormone corticosterone. In short, experience in dealing with problems makes people more mature in behaving

Keywords
Epigenetic changes, life experiences, human behaviour

Topic
Sample Topic

Link: https://ifory.id/abstract/gFwAHzQc8PG2

Corresponding Author
Sang Ayu Made Putri Suryani

Institutions
(a) Aquatic Resources Management, Warmadewa University
suryanip[at]rocketmail.com
(b) Aquatic Resources Management, Warmadewa University
(c) Aquatic Resources Management, Warmadewa University

Abstract
Genus Rasbora is a freshwater fish belonging to the Cyprinidae familia distributed covering the Asian region, especially in Southeast Asia. There are 90 species of fish Rasbora scattered around the world where 56 species distributed in Indonesia and 3 species are endemic to Indonesia. Rasbora fish used as an alternative source of protein because protein is high at 33.4 g / 100 g. Rasbora higher protein content than the protein content of carp and milkfish, Rasbora also contain high fluorine and contains omega3. This study aimed to describe the longitudinal distribution and population structure in the basin Rasbora lateristriata Sungi, Tabanan. Analysis of population structure based on weight and the total length, determine the interaction between physical and chemical factors with an abundance of Rasbora lateristriata. This study used a survey method with purposive random sampling technique to collect the sample. This study uses three stations by topography and environment, namely the upstream, midstream and downstream. Rasbora species diversity and abundance will be calculated by cluster analysis, longitudinal distribution and population structure will be explained descriptively. The interaction between physical factors with an abundance of Rasbora will be analyzed by principal component analysis. In the current study found that two species Rasbora Rasbora lateristriata and Rasbora sp. with 132 individual species of Rasbora lateristriata and distributed longitudinally along the river Sungi on the middle and downstream. Lateristriata Rasbora weight ranging from 1, 3 to 6 grams, the total length ranges from 4 to 7.5 cm. Lateristriata Rasbora distribution is affected by the DO, temperature, TSS and BOD. The existence of Rasbora lateristriata influenced by light intensity and depth

Keywords
Rasbora lateristriata, longitudinal distribution, physical-chemical, Sungi River

Topic
Biology

Link: https://ifory.id/abstract/V9ktQXuvTeyW

Corresponding Author
Lukita Ambarwati

Institutions
Universitas Negeri Jakarta

Abstract
In this paper we developed insurance model on property rental business. We used Generalized Linear Models(GLM) to develop this model because the data on property rental matches to the characteristics of GLM. Analysis of the model is done by looking at the relationship between the distribution functions that are most widely used in the analysis of property rental data. The models for the relations of distribution functions are: Poisson-Gamma, Poisson-Inverse Gauss, Negative Binomial-Gamma and Negative Binomial-Inverse Gauss. The relationship between distributions is seen from the root-mean-squared error (RMSE) and absolute mean error (MAE). Simulation results show that the model formed in the case of random effects increases in standard deviation values also increases the variation value on the average estimator. This is in accordance with the condition that the addition of standard deviation means that there is an increase in the variance of the data.

Keywords
Property Rental Insurance, Generalized Linear Models

Topic
Mathematics

Link: https://ifory.id/abstract/Ttv23DGgm67z

Corresponding Author
Ratna Widyati

Institutions
Universitas Negeri Jakarta

Abstract
This study focuses on analyzing the theses of Mathematics Education Study Program students who are Design Research (DR) types. Thesis is analyzed with the aim to see the relationship between mathematics learning material with the characteristics of Realistic Mathematics Education. DR is a quite complex qualitative research and requires precision and creativity in preparing realistic mathematics learning. The emphasis of DR is on the process of delivering subject by teachers to students and the resulting product in the form of learning design which is part of the Hypothesis Learning Trajectory. Relational analysis in this study is in the form of error analysis as an effort to observe and describe deviations between mathematical concepts to be taught to students with mathematical contextual material to be appointed in research for every mathematical material that is described as human activity. Relational understanding produces conceptual knowledge, allows students to solve mathematical problems conceptually and can explain the strategies and steps used. From 36 DR theses, there are some learning materials which is felt to be very contextually forced, so that relational understanding is not achieved. But if it is right, not only acheived relational understanding, but also students mathematics learning outcomes increased.

Keywords
Design Research Error Analysis, Relational Understanding, Characteristics of Realtistic Mathematics Education

Topic
Mathematics

Link: https://ifory.id/abstract/TMNUgtCEXb9Y

Corresponding Author
Yoyok Seby Dwanoko

Institutions
(a)Information System Study Program, Faculty of Science and Technology, Universitas Kanjuruhan Malang
Jl.S.Suproadi no. 48,Malang 65148, indonesia

(b)Information System Study Program, Faculty of Science and Technology, Universitas Kanjuruhan Malang
Jl.S.Suproadi no. 48,Malang 65148, indonesia

Abstract
The Accounting Information System at the Drinking Water Users Association (HIPPAM) is a system that manages the financial flow of the organization. In general, this information system manages customer data, water usage transactions, reports that are needed on a web-based system. This system has been running for 3 years. The development of information systems is currently growing rapidly, where mobile applications can manage data on an information system that allows application developers to switch to mobile platforms. The purpose of this study is to produce a re-engineering data document at each stage of the Reengineering Software framework. This study uses the Business Process Reengineering (BPR) method that focuses on the reengineering framework of accounting information systems at HIPPAM. In general, previous research was only carried out at the BPR stages, namely business definition, process identification, process evaluation, process specification and design, Prototyping, Refinement and Instantiation. In addition to implementing the framework, the results of this study also produce standard document content produced at each stage in the BPR. The results of this study are the implementation of the content of the BPR framework that is expected to be used as a reference in similar research going forward.

Keywords
business process reengineering, framework, information system, BPR

Topic
Information Engineering

Link: https://ifory.id/abstract/ZqdmhrNcFyaT

Corresponding Author
Riser Fahdiran

Institutions
1) Department of Biology, Faculty of Mathematics and Natural Sciences, University of
Indonesia, 16424 Depok, West Java, Indonesia
2) Environment and Forestry Research and Development Institute of Manado, Adipura road, Kima Atas, Mapanget, 95259 Manado, North Sulawesi, Indonesia
3) Faculty of Mathematics and Natural Sciences, State
University of Jakarta, Rawamangun Muka road No. 1, 13220 East Jakarta, Indonesia

Abstract
Early pregnancy diagnostic is very important to support the attempt of fauna preservation. Lowland anoa is an endangered endemic species for Sulawesi Island and Buton. This species has natural wild characteristic and aggressive, intensified with silent heat effect which often occurs in this lowland anoa, makes it hard to detect its estrous cycle and pregnancy. The research is aimed to observe and morphology changing in pregnancy, and to find out diagnostic accuracy in pregnancy of lowland anoa using abdominal ultrasonography. Ultrasonography abdominal checking was used with 95% alcohol as transduction medium. Ultrasonography method was performed before mating and at day-21, day-191, and day-218 post natural mating using one dwarf female buffalo of 9 years old. Result showed that lowland anoa act was changing in 2nd after mating until 6th month before giving birth. Their morphological changing had shown in 3rd month, 6th month and 8th. In the 9th month the milk udder has enlarged. Based on the result of ultrasonography on day-21, it is very difficult to find the gestational sac. However, on day-191, the fetus spine, head, heart and lungs are clearly visible.

Keywords
Lowland Anoa; Pregnancy; Behavior; Ultrasonography

Topic
Biology

Link: https://ifory.id/abstract/aVAxgfzC8eRD

Corresponding Author
Riser Fahdiran

Institutions
1) Department of Biology, Faculty of Mathematics and Natural Sciences of Universitas Indonesia, Depok, West Java, Indonesia
2) Division of Reproductive, Endocrinology and Infertility, Department of Obstetrics and Gynaecology, Faculty of Medicine University of Sumatera Utara, Haji Adam Malik General Hospital, Medan, Indonesia
3) Halim Fertility Centre, Stella Maris Women and Children Hospital, Medan, Indonesia
4) Faculty of Mathematics and Science, Universitas Negeri Jakarta, East Jakarta, Indonesia

Abstract
Oocyte maturation rate is an important factor in determining a good fertilization and embryo development rate with in vitro fertilization. Embryos that can develop until blastocyst stage have been proven to have a higher success rate than cleavage stage embryos. The aim of this study is to find out effect of age and body mass index (BMI) in oocyte maturation rate and the successfulness of blastocyst development. In this study, 158 infertile women within age range of 22-47 who underwent IVF-ICSI program in Halim Fertility Center were analyzed. The IVF-ICSI outcomes assessed were number of oocytes retrieved (OR), number of matured oocytes (MO), fertilization rates (FR), cleave rates (CR), the blastocyst rates (BR), and the pregnancy rates (PR). All data were divided into three groups based on WHO BMI classification (normal range, overweight and obese) and four groups based on age classification (up to 30, 31-35, 36-40, below 41). These data were analyzed with student T test method and chi-square. In result, our study concludes that the body mass index shows a negative effect of oocyte maturation process and blastocyst development. However, age had an adverse impact on number of oocyte retrieved, number of matured oocyte, and blastocyst rates.

Keywords
Oocyte Maturation; Blastocyst; Age; Body Mass Index.

Topic
Biology

Link: https://ifory.id/abstract/xkpcjhA8MyZw

Corresponding Author
Riser Fahdiran

Institutions
(1) Biology Department, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, Western Java, Indonesia, 16424
(2) Faculty of Mathematics and Sciences, Universitas Negeri Jakarta, Jakarta, Indonesia, 13220

Abstract
Research of composition and diversity of fish species in mangrove ecosystem at Muara Binuangeun, Lebak, Banten, had been conducted at May and November 2015. Catch per Unit of Effort (CPUE) was used as a method with push net and boat net as fishing gear. Fishing was conducted during low tide. Collected samples were preserved with 10 % Formalin Solution and then being identified at laboratory. In total, 106 fishes were collected from 11 families and 28 species. Istigobius ornatus was the most relative abundant species (19,81 %) and the highest relative frequency too. Diversity index value of mangrove ecosystem was 2,846. The composition of collected fish showed several migrant species from seagrass bed and coral reef ecosystem.

Keywords
Fish Composition, Diversity, Mangrove, CPUE, Istigobius ornatus.

Topic
Biology

Link: https://ifory.id/abstract/qfYwmcxAQE98

Corresponding Author
Riser Fahdiran

Institutions
(1) Biology Department, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, Western Java, Indonesia, 16424
(2) Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta, Jakarta, Indonesia, 13220

Abstract
Research of fish community structure in Panjang Island, Banten Bay has been conducted from October to December 2014 while spring tide. The aim of the research was knowing the fish biodiversity and fish community structure. The fishing method was used push net manually active. The location were at Station 1 (West) with sandy-mud and gravelled substrate and Station 2 (North) with mud-reef substrate. In total, 1770 species were captured (14 families, 16 genera, and 21 species), the most large number were at Station 1 and in November (1.213 and 749 individus). Both stations had a low species diversity index (H-) value (0,705 and 0,807). It supported by a low eveness index or distribution of individuals among species (E) value. Its high dominance index (D) value was due to the predominance of Ambassis gymnocephalus-Chandidae (908), Ambassis buruensis-Chandidae (297), Oryzias javanicus-Adrianichthyidae (265), Chelon sp.-Mugilidae (123), and Gerres sp.-Gerreidae (22) in large numbers.

Keywords
Chandidae; Mangrove; Panjang Island; Push Net; Fish Community

Topic
Biology

Link: https://ifory.id/abstract/R7BkqNYTxLuw

Corresponding Author
Teguh Budi Prayitno

Institutions
Universitas Negeri Jakarta

Abstract
We have demonstrated the first-principles calculation to tune the band gap of bilayer zigzag graphene nanoribbon by arranging the direction of magnetic moments of carbon atom at the edges. This direction was specified by the polar angle as defined in the spherical coordinates. From the ferromagnetic configuration to the antiferromagnetic configuration, as the polar angle increases the band gap increases. We also showed that the ferromagnetic configuration leads to the metallic system while the others leads to the insulator, in a good agreement with previous calculations. This results indicated that the bilayer zigzag graphene nanoribbon is potential for the spintronics devices.

Keywords
Graphene nanoribbon, band gap, first-principles calculations

Topic
Physics

Link: https://ifory.id/abstract/WGwrjuKY2qBd

Corresponding Author
Ratna Widyati

Institutions
Universitas Negeri Jakarta

Abstract
Filing or filing system is a system to find out how to store data from certain files and file organization used. Access system is a way to retrieve information from a file. Data representation consists of two, namely logical data that represents data at the conceptual level as well as physical data, namely data that has been prepared which is the final result of logical data and usually stored in storage media. Case studies taken on the filing of quality assurance in the study program environment that cover the fields of academics, student affairs and infrastructure.

Keywords
filing system, logical data, physical data

Topic
Computer Science

Link: https://ifory.id/abstract/FuwdGxLAD9YZ

Corresponding Author
Muhammad Taufiq Fathaddin

Institutions
a)Petroleum Engineering Department, Universitas Trisakti, Jakarta, Indonesia
b)Pertamina Hulu Energi Tuban East Java, Jakarta, Indonesia
*)muh.taufiq[at]trisakti.ac.id

Abstract
Pressure Build-Up Analyses on a heavy oil well would give an inconclusive result on pressure derivative curves. Some kind of Thermal Injection should be performed prior to implementing the operation of Pressure Build Up test, where the heat will lower the heavy oil reservoir fluid. Sensitivity of several parameters namely viscosity, permeability, porosity, and shut-in time were used in designing Pressure Build Up test. The model also has an outer boundary. This sensitivity would give various reservoir reach of the test or radius of investigation. The sensitivity test showed that viscosity influences more on radius investigation as compared to permeability, porosity, and shut-in time. Since the Pressure Build Up test must reach radial flow period before pressure transient arrives at the nearest boundary, the test scenarios with viscosity range from 5.602 to 24.796 cp were suitable for the well. Furthermore, the study was continued to correlate radius of investigation as a function of the parameters mentioned above. A constant value of the correlation obtained from this study was 1197.

Keywords
Pressure Build Up Test, Pressure Derivative, Heavy Oil, Radius Investigation

Topic
Civil Engineering

Link: https://ifory.id/abstract/8U3NV7rWFkmC

Corresponding Author
Ratnayu Sitaresmi

Institutions
Universitas Trisakti

Abstract
A novel method of hydraulic fracturing is by pulse pumping proppant into formation. The proppant is mixed with fibrous material, and this material will hold the formation from closing, even though channel if formed in the formation. A well producing from poorly sorting conglomeratic reservoir with secondary porosity and muddy micro-porosity. The well recently only produces intermittently 9 to 20 BOPD on sucker rod pump. Well permeability is 1.78 mD with reservoir pressure of 1188 Psi. The first step is to further evaluate the well, from rock mechanic and stress of formation, which is called Candidate Selective Factor (CSF). And then, a fracturing operation is designed, based on well parameter and surrounding wells. After performing pre-fracturing; consists of berakdown test, step rate test, and minifrac test; the operation is re-designed. The re-design includes special pulsing pumping technique, and the mainfrac operation. In the actual operation, the proppant was pulsing into formation for eleven times. The results of after channel fracturing shows that the productivity index increases 10.3 times. This new hydraulic fracturing method; Channel Fracturing; will also give less possibility of screen out, in addition to its successful result.

Keywords
Hydraulic Fracturing, Channel Fracturing, Candidate Selective Factor

Topic
Industry Engineering

Link: https://ifory.id/abstract/uAtawUeznYNQ

Corresponding Author
Mujiarto Mujiarto

Institutions
a) Postgraduate Students, Department of Mechanical Engineering, Institut Sains dan Teknologi Nasional, Jl.Moh Kahfi II Srengseng Sawah Jagakarsa, Jakarta Selatan 1264, Indonesia
*wilarso09[at]gmail.com
b) Department of Mechanical Engineering, Institut Sains dan Teknologi Nasional, Jl.Moh Kahfi II Srengseng Sawah Jagakarsa, Jakarta Selatan 1264, Indonesia
c) Department of Mechanical Engineering, Universitas Muhammadiyah Tasikmalaya, Jl. Tamansari Km. 2,5, Mulyasari, Tamansari, Tasikmalaya 46196, Indonesia
*mujiarto[at]umtas.ac.id

Abstract
Diesel Engine in Ampenan PLTD which is operated by PT. X has damaged the injector spring in cylinder

Keywords
Diesel engine; Exhaust manifold; Glowing; Injector spring; Maintenance management

Topic
Material Engineering

Link: https://ifory.id/abstract/38jX4fA7DBFw