bluuebunny/crossref_metadata_2025_split huggingface dataset:
Proactive socio-technical system as an unemployment solution in West Java
Authors: Mubaroq S R , Gustiana I , Alamsari F , Artarina M , Nurohmah H 
Published: December 2019

Abstract
The objective of this study is to make digital platform design as the innovative solution to overcome an unemployment problem in West Java. West java has been in the highest position of unemployment in Indonesia. It has been caused not only by social but also by cultural matter. Moreover, West Java has become the favorite destination for migrants from other provinces to seek for jobs and to go to study. This study used the method of a socio-technical system analysis by combining social and technical aspects as the basic analysis to solve this problem. The steps of this analysis done in this study were by documental observation and data statistical process. The result of this study will be the digital platform designs that are web and mobile named as UDUNAN. This platform will be a community from various groups in which concern about solving the problem of unemployment through online forums, workshops, and entrepreneurial training and languages especially English and Japanese for free.
The effectiveness of evaluation application implementation based on Alkin(CSE-UCLA)-Weighted Product model to evaluate the digital library services as education supporting facilities
Authors: Divayana D G H , Suyasa P W A , Abadi I B G S 
Published: December 2019

Abstract
Digital library can be said to be quality if it has been able to give services optimally to support the learning process. Efforts to get optimization of digital library service can be executed through the evaluation process. One application that can be used to evaluate the optimization level of the digital library is an evaluation application that combines the Alkin(CSE-UCLA) model with Weighted Product. Related to that statement, this study purpose was to obtain an overview of evaluation application effectiveness used to evaluate the digital library services optimization on computer colleges, especially in Bali. The method used in this study was R&D with Borg and Gall design, especially in the implementation stage. The subjects involved in the assessment of evaluation application implementation were 32 peoples, such as two education experts, 15 evaluators, and 15 users. This study location was carried out on six computer colleges in Bali. The data collection was conducted by distributing questionnaires that consist of 15 items to all research subjects. The analysis technique for data collection results uses quantitative descriptive based on effectiveness percentage level of digital library services. These study results indicate the effectiveness level of evaluation application based on Alkin(CSE-UCLA)-Weighted Product model was 86.38% so that it includes the good category. The impact of the results of this study is the level of effectiveness of digital library services in several computer colleges in Bali increasing and has implications for the field of education in the presence of new evaluation models that can be used to determine the education support services effectiveness based on artificial intelligence.
Combining statistical and interpretative analyses for testing IT implementation readiness
Authors: Irfan M , Putra S J 
Published: December 2019

Abstract
Researchers often use interpretative data analysis to test questionnaires by confirming the results of statistical analysis, but the researchers did not elaborate comprehensively how confirmation was made. Most use statistical analysis techniques only to test and assess questionnaires. In addition, interpretive confirmation is common for experienced researchers when conducting research, in contrast to novice researchers who have problems confirming the interpretive results of the questionnaire. This study explains how to combine statistical and interpretative analysis with testing the IT implementation questionnaire on HEI. The aim is to assess the questionnaire using statistics and interpret the results of statistical analysis. This finding can help researchers to test questionnaires; confirmation results can be a consideration and knowledge to revise the questionnaire.
Preliminary design of CIPP-SAW evaluation model in measuring ICT-based learning effectiveness in health colleges
Authors: Ariawan I P W , Giri M K W , Divayana D G H 
Published: December 2019

Abstract
Evaluation activities are essential to be conducted to measure the effectiveness level of the ICT-based learning process in colleges, including also specifically for health colleges. Evaluation models that are often used to measure ICT-based learning effectiveness in health colleges are formative-summative models. However, reality shows that the evaluation model is not effective. The problems solving to overcome that problem is to develop a new evaluation model in the form of CIPP (Context-Input-Process-Product) model based on SAW (Simple Additive Weighting) so that it can show the assessment accuracy level to ICT-based learning quality aspects. This study purpose was to know the initial design of the CIPP model based on SAW. This research uses the Borg & Gall development method, which focuses on the model design phase. Subjects involved in designing this evaluation model were three peoples with academic classifications in the fields of information technology, educational evaluation, and health. The research results showed that there was a clear evaluation model design using CIPP evaluation components and SAW methods in conducting learning evaluation. The impact that arises from this study results is the effectiveness of the implementation of ICT-based learning was more clearly measured, while the implications of this study present an evaluation model innovation in the field of education which is the adoption of decision support system concept in facilitating the calculation of the effectiveness of each evaluation aspect starting from the highest level to lowest.
Implementation of Fuzzy C-Means algorithm to classifying research topics in informatics department, UIN Sunan Gunung
Authors: Saputra M I N , Fauzy D , Hakim R A , Dauni P , Firdaus M D , Taufik I 
Published: December 2019

Abstract
The more rapid and large number of electronic documents stored in University library repositories or Departments, such as scientific works from academicians including theses, research reports, etc., are available in the digital version. In the process of grouping the thesis title automatically it is hoped that it can help policy makers such as the head of the study program. In this case the researcher uses fuzzy c-means algorithm which can group data in clusters so that the data of a cluster has a high level of equality with each other. In the application there is a text mining method which is a development of data mining that can be applied to overcome thesis grouping problems or research data. The result is a web that can classify research data / thesis data with a total accuracy of 96%. This number is the accuracy given based on the performance of the fuzzy c-means algorithm on the system.
Effectiveness of utilizing VCO oil and castor oil on natural creams for dry skin treatment due to environmental factors
Authors: Atmanto D 
Published: December 2019

Abstract
Rapid industrial development can lead to environmental pollution. Bad air environment will cause damage to the skin such as dry skin. Indonesia has biological natural resources such as coconut trees and castor oil plants. Both oils can be used to make skin care due to the impact of heat by the environment. This study aims to determine the effectiveness of using VCO oil from coconut and castor oil in natural creams to treat dry skin. The method of this research is comparing composition variation of VCO oil and castor oil to make natural creams. The experiment was carried out on 10 dry skins of student volunteers. Research using designated randomized group is divided into two groups. Group A is the experimental unit for treatment and group B is a comparison group, with subjects are selected by purposive sampling from a particular population. This study used an 8-experimental design of the initial test until the final test in both groups. The results showed that t count > t table is 2.441> 1.330 so Ho is rejected and HI is accepted at the 0.05 significance level. There are differences in the use of pure coconut oil cream (VCO) and castor oil cream to reduce the smoothness of the skin.
Local community empowerment in developing processing of cinnamon essential oil (Cinnamomum burmannii) as a skin care material
Authors: Atmanto D , Nursetiawati S 
Published: December 2019

Abstract
This study aims to determine the cooperative relationship of farmer groups who cultivate cinnamon plants and do cinnamon distillation to obtain essential oils with the support of private business communities in the village of Cijalu Curug, Subang, West Java. The data of this study were obtained through surveys and interviews with 30 respondents from farming communities in Curug Cijalu village. To complete the information, it was also observed the process of community empowerment to improve forest ecosystems with productive crops and training in the distillation process with marketing management by the private sector. Data sources use primary and secondary data sources. Data collection techniques include interviews, observation and documentation. The technique of checking the validity of the data uses the source triangulation technique. Data analysis includes the stages of data collection, data reduction, data presentation and conclusion drawing. The data obtained, carried out an analysis to find out the description of the effectiveness of community empowerment and the private sector in order to improve the welfare of farmers and preserve the forest environment to remain sustainable. Cinnamon essential oil containing cinnamaldehyde (60.72%), eugenol (17.62%) and coumarin (13.39%) functions as an antibacterial and can treat skin due to polluted air environment. Cinnamon essential oil can be used as a cream and soap ingredient. Soap and cream products can be used for skin care. Cinnamon trees are widely planted in the Subang area of West Java. The results of the study show that a. through steam distillation, cinnamon essential oil is obtained, b. cinnamon tree waste such as leaves can be processed distillation into essential oils, c. Local people can practice processing essential oils as a result of training, and d. The community can develop the business of processing cinnamon essential oil independently, so that it can be used to add value to family income.
Pollutant load capacity of Situ Parigi, Banten Province
Authors: Zharifa A , Fachrul M F , Hendrawan D I 
Published: December 2019

Abstract
Situ Parigi is located in Parigi Lama Village, Pondok Aren District, South Tangerang City. Based on the water quality measurements of Situ Parigi, BOD parameter has the highest concentration. This indicates that the type of waste that enters this water body is dominated by organic waste produced from domestic activities surrounding. The purpose of this study is to determine the pollutant load capacity of BOD in Situ Parigi. Pollutant load capacity is calculated using formulas in Minister of Environment Regulation No. 28 of 2009 concerning Capacity of Lake Water Pollution and/or Reservoir Load. Situ Parigi has an area of 4 Ha, an average depth of 0.98 m, a debit of 0.023 m3/sec and a hydraulic residence time of 18.25 days. Based on the calculations results, the pollutant load capacity of Situ Parigi is 3,169.81 kg/year but must accommodate a load of 20,553.15 kg/year. These results show that the pollution that occurs in Situ Parigi has exceeded its capacity. Control strategies such as dredging work and the construction of communal wastewater treatment plants could be carried out in an effort to reduce the occurring pollution levels.
Removal of heavy metal (Cu2+) by Thiobacillus sp. and Clostridium sp. at various temperatures and concentration of pollutant in liquid media
Authors: Vernans A K R , Iswanto B , Rinanti A 
Published: December 2019

Abstract
This research was conducted to remove heavy metal Cu2+ using bioremediation method with the utilization of mix culture of bacterium Thiobacillus sp and Clostridium sp. It started with the cultivation of artificial liquid growth media, Stone Mineral Salt solution (SMSs) using temperature (oC) and pollutant concentration of heavy metal Cu2+ (ppm) as the test parameters. The analysis was conducted with Atomic Absorption Spectrophotometry (AAS) to determine the concentration of heavy metal Cu2+ at the beginning and end of the research in order to calculate its removal efficiency. The exponential phase of mix bacterial culture growth was observed on day 5 with a pH value of 7. Furthermore, the culture was discovered to have the ability to live in several temperatures (oC) of 20, 25, 30 and 35, and remove heavy metal Cu2+ at 89.10%; 91.27%; 92%; and 90.27% respectively. The results also showed that at a contact time of 48 hours, the temperature of 30oC, and Cu2+ pollutant concentration of 25, 50, 75, 100 ppm, the mix bacterial culture could remove the pollutant up to efficiency above 90%. Moreover, a higher concentration of the pollutant in liquid media was found to lead to lower efficiency of removal, but at a value above 90%. Therefore, the use of biotechnology approach in this research is expected to give a scientific contribution to the processing of wastewater containing heavy metal Cu2+.
Preliminary study to determine the glucose levels in cassava peel waste (Manihot esculenta Crantz) as a result of enzymatic activities of fungi Aspergillus fumigatus
Authors: Jatnika P A , Ratnaningsih R , Rinanti A 
Published: December 2019

Abstract
The aim of this study was to utilize cassava peel waste, with a lignin content of 19% as a raw material for bioethanol. The process of obtaining bioethanol from this material was conducted in 4 stages, and these include pretreatment/delignification, hydrolysis, fermentation, and distillation. The delignification was conducted using fungi Aspergillus fumigatus in Potato Dextrose Broth media and 40 mesh was prepared. Moreover, the pretreatment process was conducted by varying the ratio of cassava peel powder as a substrats to fungi at 1:1, 2:1, and 1:2 and at contact times of 1, 3, and 5 days and analyzed through the use of Chesson method. Moreover, the hydrolysis stage used variations of sulfuric acid (H2SO4) at 1, 3, 5% (v/v) heated at 100°C with contact time varied at 30, 60, and 90 minutes. The process was further analyzed by using the DNS method to obtain sugar levels. The result therefore showed the best lignin content after pretreatment to be 8% and the delignification of cassava peel was obtained from the enzymatic activity of A. fumigatus. It was also discovered that 10 g/L of sugar was produced from the total sample used. However, further research is needed to increase the sugar content of cassava peel raw material.
Delignification and determination of sugar concentration in fertilizer as the preliminary process of bioethanol production by Aspergillus fumigatus
Authors: Lois K , Iswanto B , Rinanti A 
Published: December 2019

AbstractWater hyacinth is an aquatic weed that causes an imbalance of the ecosystem hence, it needs to be processed into useful products. This research conducted the degradation of lignocellulose-containing biomass, utilizing Aspergillus fumigatus fungi to form bioethanol. This study was initiated with the cultivation of A. fumigatus in Potato Dextrose Broth media and the preparation of water hyacinth as a substrate up to 25 mesh in size. Pretreatment was carried out using varying ratios of fungi to substrate of 1: 1, 1: 5, and 1:10 and contact time is 24, 72, and 120 hours. Furthermore, the lignin level was determined using the gravimetric method and hydrolysis was carried out afterwards in order to prepare the sugar for the fermentation procedure. The sugar content produced was analyzed using the DNS method. In this study, the highest allowance for lignin at the pretreatment stage was 25.9%, this produced the highest sugar at the hydrolysis stage (0.5 g/L). Fungi A. fumigatus functions as a biocatalyst which is suitable in the delignification process as a pretreatment and hydrolysis. A fermentation procedure and further research is needed to determine the potential of water hyacinth as a raw material in the production of bioethanol.
Analysis of land cover changes after the eruption of mount Sinabung using satellite imagery
Authors: Setiawan C , Muzani M , Warnadi W , A’Rachman F R , Qismaraga Q 
Published: December 2019

Abstract
After hundreds of years experiencing a dormant period, Mount Sinabung erupted again in August 2010 to the last recorded in June 2018. Within eight years, significant land cover changes were seen in the area around Mount Sinabung. This study aims to analyse changes in affected areas using satellite imagery. The spatial analysis method is used to determine changes in various land cover. High-resolution images before the 2010 eruption and the latest recording images of 2019 are used as analytical material. The analysis shows that the affected area is in east-southeast and south-southeast directions of the peak of Mount Sinabung. In the east-southeast direction, the eruption material reaches 3.5 km and 4 km in the south-southeast with an area more than eleven thousand hectares. Some villages such as Bekerah, Simacem, and Suka Meriah have even been lost covered by material from the eruption of Mount Sinabung. The area is generally covered by pyroclastic materials in the form of ash, sand, lapilli, and bombs. Most of the areas affected by the eruption are plantation areas, then forest areas and settlements areas. The conclusion are Sinabung eruption in recent years has had a very significant impact on various aspects, one of which is land cover.
Analysis of load variation on chicken slaughterhouse waste water treatment using GAS-SBR
Authors: Septiana I , Siami L , Tazkiaturrizki T , Hadisoebroto R , Ratnaningsih R 
Published: December 2019

Abstract
In general, chicken slaughterhouses have capacity of slaughtering more than 40,000 chickens per day so its produce a high waste water. It takes sewage treatment appropriate technology, Granular Aerobic Sludge which use Sequencing Batch Reactor (GAS-SBR) due to the high of BOD and COD. The purpose of this research was to explore GAS ability in decreasing parameter of COD, BOD, TSS and ammonia. The initial concentration COD influent was 6,406.4 mg/L then it was varied into three concentrations were 6,144 mg/L (100%), 4,608 mg/L (75%) and 3,072 mg/L (50%) of diluted pure water. As the result with four hours’ aeration time, the highest removal of 100% BOD load was 56.25% and an effluent was 1,400 mg/L. The highest removal of 50% COD load was 75% and an effluent was 768 mg/L. The highest removal of 100% TSS load was 36.73% an effluent was 1.79 mg/L. And the highest removal of 75% Ammonia load was 67.91% and an effluent was 1.11 mg/L. The parameter for the TSS and ammonia have meet the quality ministry environment no.5 2014 law for slaughterhouses, while the BOD and COD parameters are exceeding the standards due to its high organic content.
The alternative solutions of bagasse to improve Indonesian oil production in low salinity
Authors: Fattahanisa A , Setiati R , Kasmungin S , Ristawati A 
Published: December 2019

Abstract
Indonesia is one of the largest sugarcane producing countries in the world. At present, the use of bagasse is only as compost, electricity generation, etc. In the oil industry, bagasse can use as a base material in making surfactants that function as fluid reservoir oil injection to improve oil recovery factors, so it is good to develop a type of plant-based local surfactant with a lot of raw materials in Indonesia. The purpose of this study was to see that bagasse can increase the oil recovery factor at low salinity. The methods used is a laboratory study using a concentration of 1%; 1.5%; 2%; 2.5% and 3% NaLS and salinity of 4000 ppm, 5000 ppm, and 15000 ppm NaCl. The Surfactant first conducted a compatibility test then core flooding was carried out to obtain the recovery factor value. The results obtained were surfactants with variations of 1.5% 4000 ppm; 1.0% 15000 ppm; and 1.5% 15000 ppm which passes the compatibility test with the recovery factor value sequentially is 3.24%; 3.62%; and 5.34%. It shows that NaLS surfactant can increase the oil recovery factor at low salinity by 5.34% by optimizing 1.5% NaLS 15000 ppm concentration.
The alternative solutions of bagasse waste utilization to improve recovery factors in reservoir with high salinity
Authors: Ristawati A , Setiati R , Kasmungin S , Fattahanisa A 
Published: December 2019

Abstract
Surfactant injection is one of the EOR methods used to increase oil recovery. Using of surfactants is intended to reduce the interface tension between oil and water. The types of surfactants commonly used are oil-based surfactants, such as petroleum sulfonate. This condition causes the price of surfactants very dependent on oil prices. As efficient alternative, research on plant-based surfactants sourced from nature is being developed. Like the type of surfactant that will be used in this study is Sodium Lignosulfonate (NaLS) sourced from bagasse waste. The purpose of this study is to add reference of the characteristics of the NaLS surfactant to be used optimally. The screenings in this experiment were Aqueous Stability test, phase behaviour test, and IFT test on 1.5% NaLS concentration and high salinity 75,000 ppm Nacl. The results of aqueous stability test are transparent, the results of phase behaviour test are middle phase emulsion with an emulsion percent of 8.75%, and the results of IFT test obtained value of 1.98 mN/m. Based on these results, surfactants meet the screening parameters so can proceed to the injection stage for determine the value of recovery factor. Recovery factor result for NaLS bagasse waste based surfactant injection is 4.74%.
The effect of aeration time on chicken slaughterhouse water treatment using GAS-SBR
Authors: Oktafani B , Siami L , Hadisoebroto R , Tazkiaturrizki T , Ratnaningsih R 
Published: December 2019

Abstract
Granular Activated Sludge - Sequencing Batch Reactor (GAS- SBR) has the ability to treat wastewater with high organic content. This study was conducted to determine the effect of aeration time in setting aside parameters COD, BOD, TSS and Total Ammonia in chicken slaughterhouse wastewater. Chicken slaughterhouse waste water used in this processing is artificial waste water made from a mixture of sucrose, KNO3 and KH2PO4. GAS formation is cultured by reacting activated sludge with stirring (20 rpm). SBR has a total work volume of 45L which is operated in 5 stages (fill – 0,25 hours, aeration time varied for 2 hours, 4 hours and 6 hours, settle - 0.25 hours, draw - 0.25 hours and idle - 6 hour). The results showed that the variation of aeration time for 2 hours resulted in the efficiency of removing COD obtained was 72.83% (influent of 6016 mg / L), BOD was 72.23% (influent of 3614 mg / L) and TSS 59.8% (influent of 2, 8 mg / L). While the variation of aeration time for 4 hours resulted in a total ammonia removal efficiency of 65.85% (influent of 2.29 mg / L).