bluuebunny/crossref_metadata_2025 huggingface dataset:
Community structure, abundance and distribution of phytoplankton in Sungi river, Bali Province
Authors: Suryani S A M P , Arya I W , Darmadi N M , Kawan I M
Published: March 2021

Phytoplankton is a floating aquatic organism and as a primary producer. This study aimed to determine the community structure, abundance, and distribution of phytoplankton on the upstream, branch, midstream and downstream. The method used is a descriptive explorative method and analyzed with SPSS 20 version. The results showed that in upstream have seven genera of phytoplankton, ten genera in the branch, fourteen genera in the middle stream and sixteen genera in the downstream. Genera phytoplankton found Anabaenopsis, Comphospaeria, Oscillatoria, Spaerocystus, Nitzchia, and Peridinium in four stations. The highest of abundance at downstream is 403.590 individual/liter and the lowest in the upstream is 51.366 individual/liter. The highest diversity index in the downstream is 2.79 with a dominance index is 0.126 and 0.617 for similarity index. The results of one-way ANOVA showed that the number of phytoplankton genera is significant at different stations. The results of this study are community structure, abundance, and distribution of phytoplankton there is a difference from the upstream, branch, midstream and downstream due to the influence of water quality parameters exceed the quality standards.
Microplastic ingestion in the black sea cucumber Holothuria leucospilota (Brandt, 1835) collected from Rambut Island, Seribu Islands, Jakarta, Indonesia
Authors: Wicaksono K B , Patria M P , Suryanda A
Published: March 2021

The research on microplastic ingestion in the black sea cucumber Holothuria leucospilota (Brandt, 1835) collected from Rambut Island, Kepulauan Seribu, DKI Jakarta aims to determine the amount and types of microplastic in sea cucumbers, acknowledge the organ or component of the sea cucumber with the highest amoung of microplastic particles, and know the correlation between the amount of microplastics found in the sediment ingested and intestines of the sea cucumber. Samples of sea cucumbers were collected from 3 different sites, which were the west, east, and south region of Rambut Island. The sampling technique used in this study was the purposive random sampling menthod. The analysis of microplastic amount and types was done by isolating microplastics in each sample. The sea cucumber’s respiratory tree and intestine was dissolved in 65% HNO3, solution, whereas separation by size and density by immersion in saturated NaCl solution was performed on the consumed sediment samples. The respiratory tree contained the most amount of film, i.e. 4.7 particles/g. Fibre were dominant in the intestine and the consumed sediment, i.e. 2.34 and 1.4 particles/g respectively. There was a positive correlation between the amount of microplastic in the sediment ingested and intestines of the sea cucumber.
Study of artificial irradiation arrangement and pinching age on chrysanthemum
Authors: Arjana I G M , Sudewa I K A
Published: March 2021

The study was conducted to determine the effect of artificial irradiation setting time, pinching age, and their interactions on the growth and yield of chrysanthemum. The research method uses factorial Complete Randomized Group Design with 2 factors. The first factor is the treatment of growth cut point age (U) consisting of three age levels (1, 2, and 3 weeks after planting), and the second factor is the setting time of artificial irradiation (W) consisting of four levels (1, 2, 3, and 4 hours per 35 days). The results showed that the treatment of cutting point of growing age had significant effect to very real on all parameters observed except in secondary branch diameter, while the treatment of artificial exposure time was not significant on all parameters observed. The interaction had a significant effect on very real on all parameters observed except in the secondary branch diameter. The intercept between the cutting point of age 1 week after planting and artificial irradiation setting 4 hours per 35 days resulted in the average weight of flower stalk, flower diameter, and economic weight of the highest secondary branches respectively 127.398 g, 6.733 cm, and 122.489 g, increased by 29.63%, 30.69%, and 33.30%, respectively when compared with the lowest treatment.
Population growth model of Anadara granosa based on correlation between dimension of shell with the weight at the water environment of Sunda Strait
Authors: Komala R , Zahara F
Published: March 2021

Exploitation of shellfish resources can affect its growth which can be seen from changes in the size of the shell dimensions including length, width and height. The study was conducted to determine the relationship between the dimensions of the shell with its total weight as a description of growth patterns, and to determine the environmental factors that affect shell growth. Descriptive method with direct observation technique was carried out at 3 observation stations in the Sunda Strait waters. Data were analyzed using power regression, while the correlation of environmental parameters were analyzed using PCA. The results show that the correlation between the dimensions of the shell and the total weight of the shell is allometric negative (b <3), which is an unbalanced growth between the dimensions of the shell and the weight of the shell, so that the shell growth pattern is indicated by the increase in width, length and height that was faster than the body weight. The parameters that affects the dimensions of the shell and weight are NH3-N, NO2-N, BOD, salinity, depth, TOM, brightness, Pb, Cd, Hg and temperature.
Organic pollution detection based on protozoa saprobity index at Bojonegara waters of Banten Bay
Authors: Komala R , Nurfitriana D
Published: March 2021

One of the problems of the aquatic environment is organic pollution which can disturb the balance of the ecosystem. The study was conducted to analyze organic pollution based on protozoa saprobity index and to analyze some environmental parameters that affect the protozoan population in the waters of Bojonegara Banten Bay. Descriptive method with survey techniques was used in this study, consisting of 3 observation stations determined based on the presence of different industrial activities. Data were analysed through calculation of the saprobic index, diversity index and abundance, while the analysis of the relationship of several environmental parameters was conducted using the PCA (Principal Component Analysis) program. The results showed that 12 genera of Protozoa were identified with a total of 102 individuals. The waters of Bojonegoro, Banten Bay are already polluted organically with moderate pollution criteria (Beta-meso saprobic) with saprobic index values ranging from 2.30-2.47, while the environmental parameters that have the highest influence on organic pollution are brightness, temperature, pH, turbidity, total dissolved solid (TDS), dissolved oxygen, and biological oxygen demand (BOD).
Environmental science model based on 2-dimension animation
Authors: Safitri D , Marini A , Yunaz H , Putra ZE F F , Nuraini S , Rihatno T , Ibrahim N
Published: March 2021

The aim of this research is to develop environmental science model on the basis of 2-dimension animation for junior high school students in Jakarta in Indonesia. This research and development were conducted in Jakarta, the capital city of Indonesia. This research built four products with 2-dimension animation related to global warming, recycling, ozone layer, biodiversity, and mangrove forest. These products were developed using animation technique involving manipulating physical objects in creating the illusion of motion with 2-dimension animation software. Validation of experts attained 3.72 from scores ranging 1 to 4 pointing out that this model is already valid as environmental science model. These products had been revised based on recommendation from expert connected with the content and presentation technique. It can be stated that this model is valid as environmental science model on the basis of 2-dimension animation in Jakarta in Indonesia.
Tourism attraction transformation and impacts on the physical development of Labuan Bajo city
Authors: Luru M N , Ramadhani A , Sitawati A , Situmorang R , Suharto B B
Published: March 2021

Many studies proposed strategies and directions for the development of Labuan Bajo city into a tourism attraction center. However, they did not examine the tourism life cycle useful for its comprehensive development. This research, therefore, aims to analyze changes associated with the development of tourist attractions and its impact on land use. Data were collected through observation, from government agencies, and private institutions, with the qualitative method used for its analysis. The results showed that tourism attractions in Labuan Bajo City are developing in terms of number, type and distribution of attractions, with a significant influence in the land use patterns.
The presence of E. coli as Bio-indicator of groundwater pollution in Tanah Sareal District, Bogor City, Indonesia
Authors: Khairunnisa D , Hendrawan D I , Fachrul M F
Published: March 2021

Settlement condition and human activities can cause contaminated of groundwater. Tanah Sareal Sub District in Bogor City is one of most populated area. Generally, community utilizes groundwater for the purposes of daily life. This research aims to evaluate the groundwater microbial pollution in Tanah Sareal Sub District of Bogor City and factors affecting of E. coli contamination in the community of groundwater. The influenced by depth of groundwater and distance of the well from the septic tank. The analysis was carried out on 11wells scattered throughout Tanah Sareal Sub District. The water samples were taken on 2 different times. The results of the analysis are compared with PERMENKES No. 32 year 2017. Most pollution caused by the activity around the location of samples that are in densely populated areas. According to data from the Bogor City Health Office in 2016 the largest diarrhea case was found in Tanah Sareal Sub District, which is 2119 cases. The quality of ground water in the district of Tanah Sareal classified as polluted and less feasible where all the sampling point number of total coliform and E. coli are high.
Agricultural air pollution in Indonesia: A mini-review
Authors: Lu’ayi A F , Lestari P
Published: March 2021

Indonesia is an agricultural country that is a majority of the population consuming rice, corn and sugar cane for daily energy. But farmers tend to do open burning to their agricultural waste. The open burning practice of agricultural waste is filled with PM2.5 which contributes to air pollution. The research of air pollution modelling in Indonesia often uses the default value of global inventory. This gives the modelling results that are less representative of the situation in Indonesia. Therefore, it is necessary to develop a PM2.5 emission inventory from the agriculture sector in Indonesia. In addition, the inventory of PM2.5 emissions from the agricultural sector in Indonesia is still relatively minimal. In addition, most of research in Indonesia still focuses on agricultural burning activities and has not been able to identify the PM2.5 emissions from the preparation of agricultural land activities. In fact, according to international research, the two largest emissions of PM2.5 on the agricultural sector came from agricultural biomass burning activities and the preparation of agricultural land. Therefore, a comprehensive inventory study need to be investigated immediately in order to determine local factor emission as a better representatives input for agricultural air pollution modelling in Indonesia.
Developing web-based character value integration in school culture
Authors: Nuraini S , Marini A , Safitri D , Rosinar R , Rihatno T , Hadi W , Putra ZE F F
Published: March 2021

This study aims at developing web-based character value integration in school culture for elementary school students in Jakarta in Indonesia. The research method used is Research and Development. The research product of web-based character value integration in school culture built with wix.com consist of home, introduction, concept, application of character value integration in school culture at elementary school, video, and contact pages. The result of validation of expert, limited, and extensive field test related to usage of web-based character value integration in school culture including organization, content utility, navigation, graphical representation, purpose, simplicity, credibility, consistency, accuracy, loading speed, security, interactive, strong user control capabilities, readability, efficiency, and learnability attained 3.78, 3.82, and 3.85 from maximum score 4 pointing out that this product has already been valid, practical, and effective. This study comes to the conclusion that web-based character value integration in school culture is effective to be implemented at elementary schools in Jakarta in Indonesia.
Optimization of aeration time on GAS-SBR system to remove organic content in wastewater
Authors: Nareswari A , Ratnaningsih R , Tazkiaturrizki T , Hadisoebroto R
Published: March 2021

In general, chicken slaughterhouses have slaughtering capacity of more than 40,000 chickens per day, resulting in high volume wastewater with high BOD and COD concentration. Therefore, appropriate wastewater treatment technology is needed. Granular Activated Sludge that uses Sequencing Batch Reactor (GAS-SBR) has ability to treat wastewater with high organic content. The study is conducted to analyze the ability of GAS to reduce organic content with variation of aeration time in reaction stage on SBR. Formation of Granular Activated Sludge (GAS) was cultured by reacting activated sludge and using a stirring of 20 rpm. SBR had a total work volume of 45 liters and was operated in 5 stages, namely the filling, the reaction with aeration, the settling, the decantation, and the stabilization stage. In this study the initial COD concentration in chicken slaughterhouse effluent (RPA) was 5440 mg/L. The result of the study was that highest removal of BOD and COD parameter occured at 3 hours’ aeration time with removal efficiency 75% and 72%, while for TSS was at 5 hours’ aeration time with removal efficiency 65%. It could be concluded that GAS in SBR system could be applied to remove high organic content parameters in wastewater.
Mobile web model on the basis of character building for elementary school students in Jakarta in Indonesia
Authors: Rihatno T , Marini A , Safitri D , Nuraini S , Umasih U , Herlina H , Sutrisno S , Putra ZE F F
Published: March 2021

The aim of this research is to develop mobile web model on the basis of character building in the classroom for elementary school students in Jakarta in Indonesia. The method of this research is Research and Development. The research product of mobile web model on the basis of character building in the classroom for elementary school students in Jakarta in Indonesia was developed using 8b website builder with URL http://8b.com. The result of validation of expert, limited, and extensive field test related to content utility, navigation, simplicity, loading speed, security, interactive, efficiency, and learnability reached 3.69, 3.75, and 3.73 from maximum score 4 showing that this product has already been valid, practical, and effective. The conclusion of this research is that mobile web model on the basis of character building in the classroom developed in this research is practical and effective to be implemented for elementary school students in Jakarta in Indonesia.
Harvestnesia: Partnership-based start-up to advance agriculture in Indonesia
Authors: Alkausar R , Susilo A J , Nuphanudin N , Fajar T I , Rachmawati E
Published: March 2021

Indonesia is a country with great agricultural potential, natural potential geographical conditions in Indonesia making Indonesia an agrarian country. Nevertheless, the agricultural sector in Indonesia still faces many problems ranging from farmer regeneration, land-use change, modern agricultural technology, to fluctuating commodity prices. For this reason, an integrated model or system is needed which can overcome the problems of farmers from upstream to downstream. The model offered is Harvestnesia, a Start-up based on partnerships with farmers. Through this partnership, farmers will be given assistance to be able to improve the quality and quantity of production, besides this Start-up also helps in terms of integrated marketing and distribution, through this integrated system partners can find out the needs and demands of the market so that there is no surge in supply or demand so that price fluctuations can be suppressed. Through this model, it is expected to be able to restore the passion of agriculture in Indonesia specially to attract young people to work in agriculture.
Fipronil removal at various temperature and pollutant concentration by using Pseudomonas aeruginosa and Brevibacterium sp. in liquid media
Authors: Imaniar K R , Tazkiaturrizki T , Rinanti A
Published: March 2021

Fipronil is one of organochlorine pesticide with persistent nature in the environment. Fipronil can be biologically removed by utilizing bioremediation that utilizes microorganism activity. This research was conducted to remove fipronil in Stone Mineral Salt Solution (SMSs) liquid media by using Pseudomonas aeruginosa and Brevibacterium sp. with temperature and fipronil concentration as independent variable. Fipronil removal was conducted with temperature variations of 25, 30 and 35°C and fipronil concentration of 30, 40 and 50 mg/L. Based on the conducted Gas Chromatography-Mass Spectrometry (GC-MS) test, an optimal fipronil removal was achieved on 30°C temperature for three days with fipronil concentration of 40 mg/L. This finding shows that Pseudomonas aeruginosa and Brevibacterium sp. are able to remove fipronil with 65% efficiency, so that this research can be carried further to acknowledge physical parameter that influence fipronil removal in liquid media.
TernAkses: Livestock investment based on crowdfunding through custodial services and millennial farms planning
Authors: Afandi M F , Khusaini M A , Nuphanudin N , Purwanto H , Prakoso K A
Published: March 2021

Gross Domestic Products in a country becomes an important focus in measuring the level of welfare of the people. One of the sectors contributing to Indonesia’s high GDP is the agriculture sector in the livestock sub-sector. Indonesia is able to contribute from the livestock sub-sector to meet the food needs of the community at large. However, problems arise in accessing capital and sales of livestock products that make the livestock sub-sector’s contribution fluctuate each year, so that Indonesia must import livestock products to meet public demand. The development of crowdfunding-based financial technology as a breeder capital strategy through capital contributions supported by the integration of livestock partners and millennial farms planning. Through innovations based on the digitalization of financing and marketing of livestock products and supported by a positive trend of internet growth. TernAkses is an investment service innovation and sale and purchase of livestock products based marketing. Access can solve existing problems through funding programs, partnerships, training, assistance, marketing and livestock sharing. TernAkses uses websites and applications that can be accessed through a broad range of community smartphones. In its application, the synergy of related stakeholders is needed to be able to implement the concept.
Behavior Analysis of Sumatran tiger (Panthera tigris sumatrae, Pocock, 1929) in Taman Rimba Zoo Jambi
Authors: Kurniawan B , Ningsih S , Susanti T , Farikhatin F
Published: March 2021

The Sumatran tiger (Panthera tigris sumatrae) is an endemic animal on the island of Sumatra that is nearing extinction. Ex-situ conservation efforts such as at zoos have an important role in preserving and increasing populations through breeding and maintenance programs. Habitat changes can cause changes in daily behavior patterns because they have different habitat characteristics. The purpose of this study was to determine the habitat characteristics and daily behavior of Sumatran tigers in the Taman Rimba Zoo Jambi. This research was conducted for 12 hours / day starting at 7:00 to 19:00. There are two female Sumatran tigers used as objects in this study. The description of ex-situ habitat characteristics is done through direct observation and literature reference as a comparison. Daily behavior of Sumatran tigers includes eating behavior, resting behavior, social behavior, and others. Ex-situ habitat characteristics generally have similarities with their natural habitat to meet the basic needs of tigers. The results of recording daily behavior in the parent and cubs have a value with a percentage of feeding behavior (2.2% and 2.92%), resting behavior (87.92 and 85.97 %%), social behavior (3.43% and 4.05%), and others (6.43% and 7.06%).
The feasibility of combined coagulation flocculation and constructed wetland as green technology for sustainable leachate treatment
Authors: Rahmadyanti E , Saputro M S H , Hidajati N W
Published: March 2021

This study aims to determine the feasibility of coagulation flocculation processing using Moringa oleífera seed powder (MOSP) and vertical sub surface flow constructed wetlands (VSSFCW) to process leachate landfill (LL). The method used is to do a jar test to determine the optimum conditions and then proceed with VSSFCW processing. In the coagulation flocculation process, the optimum conditions were obtained with a dose of 175 mg/L, pH 6.5 and a speed of rapid mixing of 100 rpm for 10 minutes. This optimum condition is able to reach the percentage of COD, turbidity and Mn removal of 35.27%, 69.48%, and 94.83%, respectively. However, the effluent value is still above the Minister of Environment regulation standard No. 5/2014 regarding the standard quality of wastewater for the parameters of COD and Mn that is equal to 584.19 mg/L for COD and 6.98 mg/L for Mn, while for turbidity meets the standard of 69.83 mg/L. Further processing with VSSFCWs can improve the quality of LL effluent resulting from coagulation flocculation 66.36 mg/L; 4.97 mg/L for turbidity and 0.12 mg/L for Mn or with efficiencies of 88.64%, 92.88% and 98.22%. These results were obtained at the optimum HRT conditions for 10 days.
Student creative thinking skills of environmental change material using group investigation learning model with interactive multimedia
Authors: Maspupah M , Muhlas M , Rahmawati D , Alawiyah R N , Juniardi H , Nurlaela A A
Published: March 2021

Group investigation learning model are used to overcome the fundamental problems of students’ creative thinking abilities in environmental change material. This study aims to describe the planning, analyze implementation, and test the hypothesis of the application of the group investigation model assisted interactive multimedia on students’ creative thinking abilities on environmental change material. The research method used was a pre-experimental design with one group pretest-posttest. The sample was determined by purposive sampling techniques in two classes, namely class X IPA-4 and X IPA-5. The results showed that the validation of the RPP 77.24%, 82% LKS and 85% Interactive Multimedia. The average implementation of teacher activities in class X MIPA 4 is 87.50% and X MIPA 5 90%. While the average activity of student in class X MIPA 4 79.11% and X MIPA 5 79.69%. The results of hypothesis testing using paired t test in class X MIPA 4 obtained t count (19.70)> t table (2.03) and in class X MIPA 5 t count (19.05)> t table (2.04). The conclusion is t count > t table, then H0 is rejected and H1 is accepted, meaning that there is a significant difference between of students’ creative thinking abilities in environmental change material before and after the application of the group investigation models assisted interactive multimedia.
Utilization of selenium in baglog waste to increase antioxidant and storability of broccoli
Authors: Rachmawati Y S , Hidayat C , Supriadin A , Imbarwati S
Published: March 2021

Baglog waste contains cellulose, which can absorb selenium. Selenium can increase antioxidants and vegetable storability. This study aims to determine the selenium content of baglog waste in increasing antioxidants and broccoli storability. The study was conducted from May to July 2019 in Cipadung Village, Cibiru District, Bandung using the Completely Randomized Design (CRD) consisted of 5 treatments and 5 replications. The treatment was media A = 100% baglog waste, B = baglog waste mixture 25%: 75% rice husk charcoal, C = Baglog waste mixture 50%: 50% rice husk charcoal, D = Baglog waste mixture 75%: 25% rice husk charcoal, E = 100% rice husk charcoal (control). The results showed that the combination of 75% baglog waste media with 25% rice husk charcoal was able to increase antioxidants by IC50 28.34 ppm and storability for four days at room temperature. 75% baglog waste with 25% husk charcoal can be used as a medium for supplying selenium to get good antioxidants and storability of broccoli.
The field trial of Kelase-Tri Kaya Parisudha platform to realize Hybrid-Superitem patterned blended learning for mathematics subject
Authors: Ariawan I P W , Divayana D G H , Suyasa P W A
Published: March 2021

The success of learning mathematics in the cognitive, affective, and psychomotor domains is difficult to realize if the use of blended learning in learning mathematics is not carried out optimally. This research had the main objective to provide information about the field trial results towards the platform usage of Kelase which was integrated with Tri Kaya Parisudha concept in order to realize blended learning which patterned of Hybrid-Superitem to support the mathematics learning effectiveness at the level of senior high schools/vocational schools in Bali. This research applied a development approach with the development stages, which followed the Borg & Gall design by focusing on the stages of field trial and field trial revision. Subjects who were involved in conducting field trials in this study were 184 people consisting of education experts, informatics experts, teachers, and students who came from several senior high schools/vocational schools which there were in Bali Province. The data collection tools were in the form of field trial questionnaires. The quantitative descriptive by comparing the effectiveness of the field trial results with the effectiveness standard that was referring to eleven scales was the data analysis technique used. The field trial results showed an effectiveness percentage average was 88.49% so that the platforms which developed were classified as good.
Design mHealth prototyping to Eliminate Mother to Child HIV Transmission (EMTCT) in Indonesia
Authors: Siregar K N , Rikawarastuti R , Yusro M
Published: March 2021

Mobile health (mHealth) is the proposed solution from digital health intervention to improve the service quality to eliminating mother to child HIV transmission (EMTCT) in Indonesia. The purpose of this study is to develop a mHealth prototype for EMTCT. This study used prototyping Rapid Application Development (RAD). The external entities of the mHealth prototype consist; pregnant women as the main data sources midwives as program implementers who also work as information producers, contact person for EMTCT at the primary health center and health office, as the program manager for dashboard users. Nine data on longitudinal EMTCT services are antenatal visits, pre-test counseling, HIV testing, the results of HIV status, post-test counseling, antiretroviral therapy (ART), adherence for ARV therapy, viral load, and HIV status in children.
Increasing accuracy of the epilepsy signal classification
Authors: Hindarto H , Eviyanti A , Abror M
Published: March 2021

Epilepsy is a condition that can cause a person to experience seizures repeatedly. Epilepsy can attack someone when there is damage or changes in the brain. This study researchers tried to use sampling techniques as a feature of extracting epilepsy signal features and the K-NN method to identify epilepsy signal patterns. The data of this study took epilepsy signal data from the University of Bonn’s Epileptologie clinic which consisted of data set A, open eye normal signal, set B normal closed eye signal, set C in epilepsy zone, set D enter epilepsy, set E seizure epilepsy. In this study, researchers tried to classify data set A, data for normal people and data set E, data for people who have epilepsy. Data set A consists of 100 EEG signals and data set E consists of 100 EEG signal data. The data used are data for the training process as much as 50 Epilepsy signal data and data for the trial process as many as 50 Epilepsy signal data. In the trial process the classification results reach 100% accuracy. The trial process uses the value of K = 1 to the value of K = 9.
Decision support system algorithm for the beneficiary of uninhabitable housing funds
Authors: Ramdania D R , Subaeki B , Nugraha E , Muliawaty L , Ramdhani M A
Published: March 2021

Poverty is one of the big problems facing the people of Indonesia. This problem evidenced by the existence of 3.4 million Indonesians living in settlements that are not livable. This problem is also a concern of the government by providing financial assistance for homes that are not livable. But in reality, the available aid is often not on target, not on a budget, and not on time. The purpose of this research is to implement the El Choination El Choix Traduisant La Realite (ELECTRE) algorithm as a decision support system to provide recommendations for potential recipients who deserve assistance from the government. System testing is done by inputting 46 prospective beneficiary data with predetermined criteria. The results showed the ELECTRE algorithm was able to provide recommendations with an accuracy rate of 86.9%. This result indicates that the decision support system using the ELECTRE method can use as an alternative to the efficiency of determining the prospective beneficiaries of uninhabitable housing in Indonesia.
Development of interactive CD media on processing of continental pastry
Authors: Rusilanti R , Sachriani S , Yulianti Y , Mutiara M
Published: March 2021

The purpose of this research was to produce an interactive CD media on the processing of continental pastry to improve the quality of learning in continental and culinary courses. The quality of media feasibility is based on the assessment of media experts who consider the criteria “good,” with the percentage criteria earned at 77.5%. The evaluation of media experts who review the rules “excellent” has a value of 90%. This media can be considered “feasible” as it can be used for learning in terms of media and technical aspects.
Design of gallery web-based space booking system as media service
Authors: Murtiyoso O , Athian M R , Mujiyono M , Ichsan I , Adi S
Published: March 2021

Aim of this study is 1) to create a web-based booking system as a service media at Studio and Gallery B9 Department of Fine Arts, Semarang State University. 2) to implementing a trial-based studio and gallery lending system as a supporting facility for students of the Department of Fine Arts, Semarang State University. Methodology that used is SDLC, which is used as an appraiser on the website. After using a questionnaire for 22 students. The results obtained that the website-based lending system has good communication effectiveness, this is evident from the results of the questionnaire showing 86% communication efficiency. The problem of the model and visual appearance is vital as a representation of the Department and University, it is considered to have an aesthetic level that is 89% efficient and easy to use. The features on the website are also interesting so they can show 89% results. After testing the loan, 82% said they were satisfied using this feature. The average input provided is giving a checklist about the facilities that are owned in each studio.
Study on information system infrastructure in Probolinggo by using Self Organizing Map
Authors: Rohadi E , Amalia A , Qoyyimah R F D , Ardiansyah R , Siradjuddin I
Published: March 2021

The infrastructure of information systems becomes one of the main components that support government managements system. This study is addressed to achieve the infrastructure information mapping in District of Probolinggo. The proposed of the research is getting an infrastructure information map of 29 districts administered that become its reliability recommendation. The system information as website is developed for operational purpose. The Self Organizing Map (SOM) as one of neural networks is used. The clustering results by in field observation data show that the infrastructure information system of 29 districts administered are defined by 3 clusters, specifically 3 districts administered have good infrastructure, 20 have fair infrastructure and 6 districts administered have less infrastructure. Furthermore, the clustering by using SOM shows that have 1 good, 22 fair and 5 less, respectively. As a result, the accuracy of both clustering is less than 70 %. That means, SOM still need in field observation data to evaluate the recommendation.
The influence of animal name introduction learning application in English for Kindergarten on Android phones
Authors: Denni I , Hamdani N A , Bhakti D D , Maulani G A F , Adhari L
Published: March 2021

Preschool or Kindergarten education is a formal of education for children between the ages of 4-6 years. The main task as a preschool educational institution is to prepare children by introducing knowledge, attitudes, behavior, skills and intellectuals so they can adapt to real learning activities in elementary schools. At present most of the learning in schools is still used teaching methods using media guidebooks, as well as learning carried out education of preschools. In preschool children learning there are basic material with animal themes such as the introduction of the names of animals in the vicinity in accordance with basic competencies to know the types and names of animals. Whereas at present most of the learning in schools is still used teaching methods using guidebook media. Adobe flash or is a multifunctional software. Apart from its initial function, which made it easy to create web animations, it turned out that Flash was developing so rapidly that it could be utilized as an extraordinary multi-media software. Adobe Flash be utilized as an effective game creation program. It is hoped that this research children’s educational game can be useful for children in Indonesia of preschool age.
The web-based estimation of motorcycles sales using linear regression method
Authors: Indriyanti A D , Prehanto D R , Prismana I G L P E , Nuryana I K D
Published: March 2021

The purpose of this research is to use the linear regression method to predict motorcycle sales results, the variable used is the period as an independent variable (X) and sales as the dependent variable (Y). The data used in the calculation of linear regression is the last four years data, from January 2014 to December 2019. The implementation of the motorcycle sales forecasting system is to predict sales in the coming months. To find out the level of accuracy of the prediction error calculation is needed so that it is known how many error levels are obtained. Calculation of forecasting errors using Mean Absolute Deviation (MAD) and Mean Absolute Percentage Error (MAPE). The results of this study are web based motorcycle sales prediction systems using linear regression method. From this system, motorcycle sales forecasting is obtained the following month. In January 2015 with forecasting results of 12.63. To find out how accurate the forecasting level is, the error calculation result using Mean Absolute Deviation (MAD) is 3.40 and Mean Absolute Percentage Error (MAPE) is 44.33%. The results show that the error rate is small and the forecasting results are close to accurate.
Implementation of the fuzzy logic for measuring instrument evaluation results in Information Security Index
Authors: Kaffah F M , Irfan M , Slamet C , Bernat C , Rahman A B A
Published: March 2021

Information security in an organization is very important and should be a major concern. The government designed and made an application of security standards for the application of information security in Indonesia. This Information Security Index is an application that is used as a tool to analyze and evaluate the level of readiness, completeness and maturity of the application of information security in an organization in accordance with the criteria in SNI ISO / IEC 27001 and COBIT. Fill in the index instrument is expected to be easier and faster in using the application. In its development, there is a method that will be applied to this application, namely fuzzy logic. Fuzzy logic is implemented in the Information Security index application in this case serves to predict the final result. In this study, the prediction results using the Mamdani fuzzy method get the percentage of MAPE error 19.17%, so that the accuracy of the implementation of the Mamdani fuzzy method in the security index application is 80.83%.
Visualization of performance assessment research to support education computing in the laboratory
Authors: Dhina M A , Abdullah A G , Hadisoebroto G , Mubaroq S R
Published: March 2021

Practical learning in the laboratory is very important learning as a bridge between theory and reality in the field. Students must be able to understand the theory by proving the practical learning process in the laboratory. The success of students in learning theory in class can be measured through affective, cognitive, and psychomotor assessments. Evaluation of three aspects can be done with performance assessment. performance assessment has the meaning of assessing assignments and real performance that can be done by students, which is the goal of learning. In this study, trying to visualize previous research that examined the performance assessment and laboratory practicum related to the use of computer technology. So that it can be used as a foundation to develop further research. Visualization is done with bibliometric analysis, using a dataset from Scopus. The results showed that the performance assessment research had a close relationship with educational computing. In the visualization of overlays, it can also be seen that research that discusses performance assessment and computational education is research that has novelty.
Decision support system to determine hydroponic vegetable cultivation based on Internet of Things (IoT)
Authors: Putra E I , Cendana M , Yaddarabullah Y
Published: March 2021

Currently, hydroponic vegetables have become a trend because of its efficient construction requires a minimum resource management. Determining the correct type of hydroponic vegetable before planting would affect the yield of the vegetables produced. However, the experiments conducted in this research resulted in deadlocks to determine the exact type of vegetable cultivated at the farm where the type of hydroponic vegetable depends on several factors that affect the quality and quantity, size weights, the number of leaves and the weight of plants. A decision support system is applied as a solution to the problem and IoT is performed to gain criteria data input. AHP method is conducted to measure criteria such as raw water PH, PPM of a nutritional solution, air temperature and sunlight illumination intensity and to find alternatives determined namely, lettuce, Pakcoy, Mustard greens, Spinach, Kale, Celery, and Chinese Kale. Results showed that Pakcoy in the first rank with a value of 0.25% and the second is spinach with a value of 0.16%, the Decision support system has proven to determine the type of vegetable on hydroponic vegetables.
Modified concrete mix design using Sikacim, Sika Bonding, Lumajang Sand and Silica Sand
Authors: Ramadhan A B , Candra A I , Karisma D A , Ridwan A , Wibisono I , Muslihun Y S
Published: March 2021

The development of construction makes concrete a common and important building material used. Concrete is a composite material consisting of a mixture of aggregate cement, water with or without the use of added ingredients. In this era, concrete added materials are needed to meet construction needs. One of the added ingredients is Sikacim Concrete Additive and Sica Bonding Adhesive. Sikacim is able to accelerate hardening of concrete while sica bonding is able to increase adhesion. In addition to added materials, the quality of concrete constituent materials also influences the manufacturing of concrete. This study aims to modify the proportion of concrete mix using Lumajang sand and silica sand with the addition of added ingredients Sikacim Concrete Additive and Sica Bonding Adhesive. The test specimen used is in the form of a cube with a size of 15x15x15 cm. The method used is an experimental method with compressive strength testing carried out when the age of concrete reaches 3, 7,14, and 28 days. Compressive strength testing using universal testing machine. Testing results optimum obtained compressive strength value generated is 944 kg/cm2 in 28 days.
Fracture characterization with fieldwork data and its implication for basement fracture reservoir at Muaro Silokek Granitic Outcrops
Authors: Koesmawardani W T , Sapiie B , Rudyawan A
Published: March 2021

The Muaro Silokek Area is a location that is quite complex in geological structure and consists of granitic rocks which vary in mineral composition, so it’s fit to do fieldwork for fracture characterization for analog basement fracture reservoir. This research was continuance of previous study about granitic basement fracture at around Sumatra, now especially with fieldwork data. The aim of the study is to determining fracture characteristics like fracture spacing, fracture aperture, fracture length by using fieldwork data to determine fractal analysis and relate it to fracture reservoir. Those research conducted by using scanline and windows scan method with total 2700 cm scan line and 490000 cm2 area of widows scan in five location damage zone. The result shows generally shear fracture have three main orientations, there were NE – SW, NNW – SSE, ENE – WSW and NNE – SSW, W – E, NW – SE for joint orientation. Cumulative distribution of fracture spacing, fracture aperture, fracture length at five location scan line and window scan following power law. Statistically, fracture porosity and permeability result shows linier data distribution with cubes calculation methods. This fracture permeability has exponential distribution relationship with fracture aperture, and fracture porosity has power distribution relationship with fracture spacing.
Influence of different forms of flavonoid on growth performance and gut morphology of broiler: A meta-analysis
Authors: Prihambodo T R , Sholikin M M , Qomariyah N , Jayanegara A , Batubara I , Utomo D B , Nahrowi N
Published: March 2021

The objective of this study was to determine the effects of different forms of dietary flavonoid on the production performance and intestinal morphology of broiler. A database was built from published literature regarding the various forms of dietary flavonoid. The database contained a total of 103 data points from 39 studies that met the criteria. The different forms of dietary flavonoid were considered as fixed effects, and various studies were treated as random effects, and p-values were used as the model statistics. Results revealed that both dried powders and crude extract of flavonoid increased (p<0.05) average daily gain and villus height of ileum but did not give any significant effects on other parameters. Flavonoids can maintain the health of villus, so it provides the increment of absorption of feed and affects average daily gain. The conclusion of this paper is that the different forms of flavonoids have a positive impact on the production performance and gut morphology of broiler. The best form of flavonoid is through the extraction method base on the enhancement of average daily gain and gut morphology conditions.
Sodium lignosulfonate surfactant microemulsion for light crude oil Indonesia
Authors: Imam R , Setiati R , Sitaresmi R
Published: March 2021

Sugarcane bagasse surfactant possesses a great potential as local surfactant development material. However, the existing researches regarding sugarcane bagasse as surfactant are still limited on the process of creating surfactant from sulfonation of bagasse lignin, and still unable to cover the Sodium Lignosulfonate Surfactant’s utilization with various concentration and appropriate low salinity on a case of surfactant injection. One of which is by observing surfactant rheology through phase behavior test. The method utilized in this research is a laboratory study by creating a field / reservoir situational conditioning. Surfactant concentration tested in this research were 0.2%, 0.4%, 0.6%, 0.8%, 1%, 1,5% at 6000 ppm; 0.2%, 0.4%, 0.6%, 0.8%, 1%, 1.5% at 7000 ppm; 0.2%, 0.4%, 0.6%, 0.8%, 1%, 1.5% at 8000 ppm by conducting test results and emulsion stability observations and phase behavior. After the test is done, the next step of the test will be the IFT test. The purpose of this research is to know the salinity and concentration of how surfactans can work optimally.
Zinc Oxide Nanoparticle and its characterization in the LTO/ZnO composite for lithium-ion battery anode
Authors: Faizah F , Priyono B , Chairunnisa Z E , Nugraha M R , Syahrial A Z , Subhan A
Published: March 2021

One of the most popular active materials that are being used in lithium-ion batteries is lithium titanate/Li4Ti5O12 (LTO), as it exhibits zero strain properties as well as high resistance to volume change. Its disadvantages are low capacity and low electrical conductivity. In this experiment, the addition of zinc oxide nanoparticles into LTO as composite is aimed at increasing the capacity of LTO. LTO was synthesized from LiOH and anatase TiO2 using the solid-state method. The composite powders were prepared with 5, 8, and 11 wt.% composition of ZnO-NP. XRD and SEM were used to investigate the composition and microstructure of LTO/ZnO-NP composites. The electrochemical properties of the LTO/ZnO-NP electrode studied by electrochemical impedance spectroscopy, cyclic voltammetry, and charge-discharge. ZnO nanoparticles were uniformly distributed in LTO. The XRD showed a rutile TiO2 and dilithium titanate as a minor phase, while SEM showed particle distribution of LTO/ZnO-NP. LTO/ZnO-NP-11 exhibits excellent cycling performance and high capacity when used as anode with a specific capacity of 166.96 mAh/g at 0.1C, which is better than LTO pure.
Gas in place of reservoir X uses dynamic data and geology data in ND structure, South Sumatera
Authors: Lamis N M , Setiati R
Published: March 2021

ND Field is a mature field, whose production has decreased. This field has considerable hydrocarbon potential. With such a large potential, it is possible that in reservoir x which is in the Telisa Formation there is still the potential for hydrocarbons in the un-drainage area outside the area of the producing wells. The reservoir x compartmentalization analysis is carried out using the fault seal analysis method, mapping the reservoir x property combined with the analysis of pressure data between compartments. Reservoir x, production and pressure data are used to analyse the amount of connected gas in place (CGIP) using the P/Z method. Reservoir x connectivity is divided into 4 compartments. CGIP volume analysis using the P/Z method shows CGIP compartment 1 of 1400 MMSCF and for compartment 2 of 350 MMSCF, whereas with volumetric it is found that compartment 3 in place is 261.4 MMSCF and compartment 4 is 413.9 MMSCF.