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Implementation of boosting on the C5.0 algorithm in the health development index data 基于C5.0算法的健康发展指标数据提升实现
Natural Science: Journal of Science and Technology Pub Date : 2021-05-31 DOI: 10.22487/25411969.2021.v10.i1.15466
M. Fajri, Ashari Ramadhan, R. Hidayatullah
{"title":"Implementation of boosting on the C5.0 algorithm in the health development index data","authors":"M. Fajri, Ashari Ramadhan, R. Hidayatullah","doi":"10.22487/25411969.2021.v10.i1.15466","DOIUrl":"https://doi.org/10.22487/25411969.2021.v10.i1.15466","url":null,"abstract":"The public health development index is a collection of health indicators that can be easily and directly measured to describe health problems down to the district/city level. The last calculation of the public health development index in Indonesia was carried out in 2018 with the result that not all districts/cities are in a high condition. This research was conducted to classify districts/cities that have a high and low public health development index using the boosted C5.0 algorithm. The results showed that the accuracy of the model increased with the increase in the number of iterations and was constant at the 60th iteration. Error training was also smaller and constant at the 10th iteration. The final accuracy, sensitivity and specificity were obtained respectively 97.09, 96.72, and 97.62.","PeriodicalId":399499,"journal":{"name":"Natural Science: Journal of Science and Technology","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130856410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Isolation and Identification of potentially bacteriocin-producing lactic acid bacteria from Sawi Asin 产菌素乳酸菌的分离与鉴定
Natural Science: Journal of Science and Technology Pub Date : 2021-05-31 DOI: 10.22487/25411969.2021.v10.i1.15484
Nur Hidayah, Iman Rusmana, N. R. Mubarik
{"title":"Isolation and Identification of potentially bacteriocin-producing lactic acid bacteria from Sawi Asin","authors":"Nur Hidayah, Iman Rusmana, N. R. Mubarik","doi":"10.22487/25411969.2021.v10.i1.15484","DOIUrl":"https://doi.org/10.22487/25411969.2021.v10.i1.15484","url":null,"abstract":"The objective of this study are to isolate lactic acid bacteria from sawi asin and its antimicrobial activity in inhibiting the growth of Staphylococcus aureus and Escherichia coli. Screening of 66 bacterial isolates found 2 isolates of lactic acid bacteria that potentially produced bacteriocins. They were isolate PB3.6 and PG1.9, identified as Lactobacillus plantarum and Lactobacillus brevis, respectively. Isolates PB3.6 and PG1.9 could produced bacteriocins and able to inhibit the growth of S. aureus and E. coli. Bacteriocins of PB3.6 and PG1.9 isolates expected to be used as an alternative preservative agent in food products due to its capability of inhibiting the growth of food spoilage microbes, thus the usage of chemical additive material can be reduced","PeriodicalId":399499,"journal":{"name":"Natural Science: Journal of Science and Technology","volume":"47 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120839117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dye Sensitized Solar Cells Fabricated Using Natural  Dyes from Traditional Indonesian Plant as Sanitizers 染料敏化太阳能电池采用印尼传统植物的天然染料作为杀菌剂
Natural Science: Journal of Science and Technology Pub Date : 2020-12-31 DOI: 10.22487/25411969.2020.V9.I3.15369
D. Darwis
{"title":"Dye Sensitized Solar Cells Fabricated Using Natural  Dyes from Traditional Indonesian Plant as Sanitizers","authors":"D. Darwis","doi":"10.22487/25411969.2020.V9.I3.15369","DOIUrl":"https://doi.org/10.22487/25411969.2020.V9.I3.15369","url":null,"abstract":"This study aims to utilize various natural dye extracts from traditional Indonesian plants to be applied as sensitizers to DSSC. The dye extract is derived from the turmeric plant (Curcuma longa Linn), henna tree (Lawsonia inermis L.) and pandan (Pandanus amaryllifolius). TiO2 nanoparticles was used as semiconductor material for DSSC as they have a good crystallization structure and a wide surface area. The results showed that the DSSC using turmeric extraction produced a maximum power of 2.53x10-3 mW / cm-2 with an efficiency level of 0.04%. While the henna tree extract produced a power of 1.27x10-2 mW / cm-2 with an efficiency level of 0.25% and pandan extract produced a power of 4.01x10-2 mW / cm-2 with an efficiency of 0.8%. Thus the dye extract from pandan is the best sensitizer that can be applied to the DSSC.","PeriodicalId":399499,"journal":{"name":"Natural Science: Journal of Science and Technology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121360386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Analysis Quality Control of UMKM Tiga Bintang Snack Stick Product Using Statistical Quality Control (SQC) 用统计质量控制(SQC)分析UMKM Tiga Bintang小吃棒产品的质量控制
Natural Science: Journal of Science and Technology Pub Date : 2020-12-31 DOI: 10.22487/25411969.2020.V9.I3.15234
Jassinca Chrissma Audina, Fadjryani Fadjryani, Siti Annisa Rahmasari Pawellangi
{"title":"Analysis Quality Control of UMKM Tiga Bintang Snack Stick Product Using Statistical Quality Control (SQC)","authors":"Jassinca Chrissma Audina, Fadjryani Fadjryani, Siti Annisa Rahmasari Pawellangi","doi":"10.22487/25411969.2020.V9.I3.15234","DOIUrl":"https://doi.org/10.22487/25411969.2020.V9.I3.15234","url":null,"abstract":"UMKM Tiga Bintang is one of the household-scale agro industries that processes roa fish, duo fish, moringa, and purple sweet potatoes as the basic ingredients into various kinds of snacks in the form of sticks. To get the best quality in accordance with the standards desired by consumers, quality control is needed, which aims to minimize deviations that are not in accordance with the standards set by the industry itself. The purpose of this study is to see whether quality control in the production process by UMKM Tiga Bintang is controlled or uncontrolled. The type of data used in this study is primary data. The analysis process carried out in this study uses the Statistical Quality Control (SQC) approach. Statistical Quality Control is a statistical technique that is widely used to control the quality of a product, by evaluating quality in terms of compliance with specified specifications. The SQC analysis results show that the number of products examined was 24800, where the average product damage was 0.095121 or 9.5121%, with the most type of damage occurring there was a brownish product colour. The upper control limit (UCL) and the lower control limit (LCL) for each production vary. Quality control of UMKM Tiga Bintang is not well controlled because of uncontrolled production time within the upper and lower control limits.","PeriodicalId":399499,"journal":{"name":"Natural Science: Journal of Science and Technology","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125434951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The Composition and Diversity of Butterfly (Lepidoptera: Rhopalocera) in Jember University 浙江大学蝴蝶(鳞翅目:蛱蝶科)的组成和多样性
Natural Science: Journal of Science and Technology Pub Date : 2020-12-31 DOI: 10.22487/25411969.2020.V9.I3.15254
R. Setiawan, Hari Sulistiyowati, Firdausi Wulandari
{"title":"The Composition and Diversity of Butterfly (Lepidoptera: Rhopalocera) in Jember University","authors":"R. Setiawan, Hari Sulistiyowati, Firdausi Wulandari","doi":"10.22487/25411969.2020.V9.I3.15254","DOIUrl":"https://doi.org/10.22487/25411969.2020.V9.I3.15254","url":null,"abstract":"Jember University (UNEJ) has 40% of green area that covered by various plants and trees as the insect habitats, such as butterfly. The butterflies use plants as a source of food and hostplant that support the diversity of butterfly species. The aim of this study was determined the composition and diversity of butterflly species (Lepidoptera: Rhopalocera) in UNEJ. The data collection using road sampling method at all UNEJ’s faculties. The identification obtained 30 species of butterflies include to 3 family and 22 genus with a total individual of 330. The diversity of butterflies is 2.826 which is included in the medium category.","PeriodicalId":399499,"journal":{"name":"Natural Science: Journal of Science and Technology","volume":"247 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131716949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SWOT Analysis by Realizing Cluster Analysis to Reducing Risk of Hospitality Business Losses in Central Sulawesi 通过实现聚类分析的SWOT分析降低苏拉威西中部酒店业务损失风险
Natural Science: Journal of Science and Technology Pub Date : 2020-12-31 DOI: 10.22487/25411969.2020.V9.I3.15299
Mohsin Jalil, Mufitatul Annisa, Selvia Anggun Wahyuni, I. T. Utami, I. Setiawan
{"title":"SWOT Analysis by Realizing Cluster Analysis to Reducing Risk of Hospitality Business Losses in Central Sulawesi","authors":"Mohsin Jalil, Mufitatul Annisa, Selvia Anggun Wahyuni, I. T. Utami, I. Setiawan","doi":"10.22487/25411969.2020.V9.I3.15299","DOIUrl":"https://doi.org/10.22487/25411969.2020.V9.I3.15299","url":null,"abstract":"Hotels are a form of building or accommodation business that provides lodging services, as well as other facilities where all services are for the general public. Reducing the risk of the hotel business can be done by building strategies or actions that are continuously carried out based on the perspective of what is expected by customers in the future. This study uses a SWOT analysis by realizing the use of cluster analysis to provide an overview of the location and reduce the risk of loss in the hotel business in Central Sulawesi Province. From the internal and external results of SWOT in the hotel business, it can be concluded that investors must improve their strategy by prioritizing geographical location in building hotels by calculating that disasters can occur at any time.","PeriodicalId":399499,"journal":{"name":"Natural Science: Journal of Science and Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126784313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of Magnetite Nanoparticles Using The Reverse Co-precipitation Method With NH4OH as Precipitating Agent and Its Stability Test at Various pH 以NH4OH为沉淀剂反相共沉淀法合成纳米磁铁矿及其在不同pH下的稳定性试验
Natural Science: Journal of Science and Technology Pub Date : 2020-12-31 DOI: 10.22487/25411969.2020.V9.I3.15298
Maya Rahmayanti
{"title":"Synthesis of Magnetite Nanoparticles Using The Reverse Co-precipitation Method With NH4OH as Precipitating Agent and Its Stability Test at Various pH","authors":"Maya Rahmayanti","doi":"10.22487/25411969.2020.V9.I3.15298","DOIUrl":"https://doi.org/10.22487/25411969.2020.V9.I3.15298","url":null,"abstract":"In this study, the synthesis of magnetite was carried out through the reversed coprecipitation method with ammonium hydroxide (NH4OH) as precipitating agent. The aim of the study was to obtain the most appropriate moles ratio of Fe(III) and Fe(II) in obtaining the best characteristics of magnetite, considering that Fe (II) was easily oxidized to Fe (III). Characterization of synthesized magnetite was performed using a Fourier Transform Infrared (FTIR) spectrophotometer and X-Ray Diffraction (XRD). The results showed that the moles ratio of Fe (III) and Fe (II) that produced magnetite with high yield, FTIR spectra absorption and diffractogram peaks with high intensity was magnetite synthesized using a ratio of Fe (III) and Fe (II) = 1.5: 1. Yield of magnetite synthesized in this condition was 81%. Based on the stability test, magnetite was stable at pH 2-10.","PeriodicalId":399499,"journal":{"name":"Natural Science: Journal of Science and Technology","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133036416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Analysis of Quality Control of Brownies Home Business Products Using Statistical Quality Control 用统计质量控制分析布朗尼家居产品的质量控制
Natural Science: Journal of Science and Technology Pub Date : 2020-12-31 DOI: 10.22487/25411969.2020.V9.I3.15300
Selvia Anggun Wahyuni, Fadjryani, Nadya Humairah Ramadhany
{"title":"Analysis of Quality Control of Brownies Home Business Products Using Statistical Quality Control","authors":"Selvia Anggun Wahyuni, Fadjryani, Nadya Humairah Ramadhany","doi":"10.22487/25411969.2020.V9.I3.15300","DOIUrl":"https://doi.org/10.22487/25411969.2020.V9.I3.15300","url":null,"abstract":"Brownies Home Business is one of the home-scale industries that produce brownies. This business began in 2011 and still active today. Brownies Home Business has conducted quality control over the products produced, but there are still failing products produced by the business. Even though the product failed to affect the benefits obtained because the costs incurred increased. For this reason, it is necessary to have quality control so that the products obtained experience less product failure. The analysis conducted in this study uses the Statistical Quality Control (SQC) approach. Statistical Quality Control (SQC) is a problem solving technique that used to control, analyze, and improve products so that they are expected to contribute to improving the quality of a production. Statistical Quality Control (SQC) analysis showed that the number of products examined was 2100 brownies with an average production that was damaged during fourteen days of observation of 7,71% with a total of failed products produces as many as 162 brownies. The type of damage that can occur in brownies products produced include immature defect, swift defects, and burns defects. The most common type of damage was defective immature by 56,79% with a total product of 92 brownies. From the analysis results obtained that the quality control in Brownies Home Business is well controlled.","PeriodicalId":399499,"journal":{"name":"Natural Science: Journal of Science and Technology","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127345486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spline Regression Analysis to Modelling The Open Unemployment Rate in Sulawesi 苏拉威西岛公开失业率的样条回归分析
Natural Science: Journal of Science and Technology Pub Date : 2020-08-31 DOI: 10.22487/25411969.2020.v9.i2.15202
Selvia Anggun Wahyuni, R. Ratnawati, I. Indriyani, M. Fajri
{"title":"Spline Regression Analysis to Modelling The Open Unemployment Rate in Sulawesi","authors":"Selvia Anggun Wahyuni, R. Ratnawati, I. Indriyani, M. Fajri","doi":"10.22487/25411969.2020.v9.i2.15202","DOIUrl":"https://doi.org/10.22487/25411969.2020.v9.i2.15202","url":null,"abstract":"Unemployment is a very complex problem because it affects and is influenced by several factors that interact with each other following a pattern that is not always easy to understand. If unemployment is not immediately addressed, it can cause social vulnerability and potentially lead to poverty. This research will use the spline regression method in modeling the 2018 Sulawesi open unemployment rate. The results obtained are the best spline model obtained from the optimum knots point with a combination of knots 3,3,1,1,3,3. This model has the minimum GCV value 1,97 with R2 77,67%. All variables significantly influence the open unemployment rate.","PeriodicalId":399499,"journal":{"name":"Natural Science: Journal of Science and Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124295695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
The Invasive of Freshwater Prawn Macrobrachium lanchesteri (De Man, 1911) from Watershed in Palangkaraya University, Kalimantan, Indonesia 印度尼西亚加里曼丹帕朗卡拉亚大学流域淡水沼虾的入侵(De Man, 1911)
Natural Science: Journal of Science and Technology Pub Date : 2020-08-31 DOI: 10.22487/25411969.2020.v9.i2.15183
Anita Maulina, Angelina Inocencia, E. D. Putra, Inriyati Satriani, Linda Lusiana
{"title":"The Invasive of Freshwater Prawn Macrobrachium lanchesteri (De Man, 1911) from Watershed in Palangkaraya University, Kalimantan, Indonesia","authors":"Anita Maulina, Angelina Inocencia, E. D. Putra, Inriyati Satriani, Linda Lusiana","doi":"10.22487/25411969.2020.v9.i2.15183","DOIUrl":"https://doi.org/10.22487/25411969.2020.v9.i2.15183","url":null,"abstract":"Freshwater prawn species Macrobrachium lanchesteri (De Man, 1911) in Kalimantan for the first time was reported to be found only in East Kalimantan and there have been no reports of this species being found in Central Kalimantan. This study aims to reveal the presence of invasive freshwater prawn and habitat characteristics found in the watershed of Palangka Raya University. This study was conducted in October–November 2019 covering five stations. Specimens were collected using a purposive sampling method. Environmental parameter measurements were made including types of substrate, water velocity, tree cover, water depth as well as width. The identification of specimens from the watershed of Palangka Raya University based on morphological characteristics shown that the species very similar to the alien freshwater prawn, M. lanchesteri. Based on the results of research, this report has revealed the presence of this invasive species in Central Kalimantan, Indonesia.","PeriodicalId":399499,"journal":{"name":"Natural Science: Journal of Science and Technology","volume":"875 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133766106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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