Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA)最新文献_第3页

Analysis of Preservatives in Packaged Drinks with Chromatography Techniques 用色谱法分析包装饮料中的防腐剂

Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA) Pub Date : 2022-03-01 DOI: 10.54076/jumpa.v2i1.204

Merry Yunita

引用次数: 0

Differences Of Student's Mathematics Ability Using The Whatsapp Group And Classroom Platform During Pandemic Covid-19 Covid-19大流行期间使用Whatsapp群和课堂平台的学生数学能力差异

Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA) Pub Date : 2021-09-30 DOI: 10.54076/JUMPA.V1I2.61

Susi Agustin, Dira Puspita Sari

{"title":"Differences Of Student's Mathematics Ability Using The Whatsapp Group And Classroom Platform During Pandemic Covid-19","authors":"Susi Agustin, Dira Puspita Sari","doi":"10.54076/JUMPA.V1I2.61","DOIUrl":"https://doi.org/10.54076/JUMPA.V1I2.61","url":null,"abstract":"The purpose of this study was to determine the differences in students' mathematical abilities using the WhatsApp group and classroom platforms during the Covid-19 pandemic in class VIII of SMP Negeri 2 Hinai. This research method is to use quasi-experimental research. The number of samples in this study were 60 students divided into 2 class groups, namely the experimental class 1 which was taught using WhatsApp group, and the experimental class 2 which was taught using classroom. The data collection instruments were in the form of tests of students' mathematical understanding abilities before and after being given treatment (pretest and posttest). Based on the results of hypothesis testing with the t test technique, the value of t count> t table is 2.16> 2.04 so it can be concluded that there are differences in students' mathematical abilities using the WhatsApp group platform and classrooms during the Covid-19 pandemic in class VIII SMP. Negeri 2 Hinai. Students 'mathematical abilities using the WhatsApp group platform are superior to students' mathematical abilities using classroom.","PeriodicalId":17729,"journal":{"name":"Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA)","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81782995","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

Comparison Of Thermo Gravimetric Characterization Of Active Carbon Analyzer Rice Husk With Rice Husk Implementation 活性炭稻壳热重分析与稻壳实现的比较

Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA) Pub Date : 2021-09-30 DOI: 10.54076/jumpa.v1i2.176

Masdania Zurairah, Edy Syahputra Saragih, Misdawati Misdawati

引用次数: 1

Application of Topsis Method in Decision Support System Selection of Undergraduate Scholarship Recipients Topsis方法在大学生奖学金获得者决策支持系统选择中的应用

Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA) Pub Date : 2021-09-30 DOI: 10.54076/jumpa.v1i2.141

Romiana Matanari

{"title":"Application of Topsis Method in Decision Support System Selection of Undergraduate Scholarship Recipients","authors":"Romiana Matanari","doi":"10.54076/jumpa.v1i2.141","DOIUrl":"https://doi.org/10.54076/jumpa.v1i2.141","url":null,"abstract":"The procurement of scholarship programs is one of the efforts made by the government, companies, or foundations to help individuals for the ongoing education that is being pursued, one of which is in the world of education such as STMIK Pelita Nusantara, where the campus is under the auspices of the Democrat Cemerlang Foundation, a foundation that participate in the provision of scholarship programs, both underprivileged scholarships and merit scholarships. In granting scholarships, many things must be considered so that the right decisions are made, namely the best students who meet the requirements and criteria that have been set and are not subjective. so far pthe campus is experiencing difficulties because there are many students who graduate each year while there are many conditions that must be considered, so faster, more precise and accurate steps are needed to help the campus determine students who are eligible to receive the scholarship.In this study, the TOPSIS method will be applied to select undergraduate scholarship recipients. The method was chosen because TOPSIS is a method whose basic concept is that the best alternative is the alternative that has the closest distance from the positive ideal solution and has the farthest distance from the negative ideal solution from the point of view ofgeometrically using Eucledian distance to determine the relative proximity of an alternative to the optimal solution. The results obtained in this study are that the TOPSIS method using 5 criteria can be applied in the selection of undergraduate scholarship recipients, where 2 out of 5 alternatives have the highest score of 0.657659 as well as scholarship recipients.","PeriodicalId":17729,"journal":{"name":"Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA)","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72703368","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

Decision Support System in Determining Scholarship Recipient Lecturers Using the Simple Additive Weighting (SAW) Method 使用简单加性加权(SAW)方法确定奖学金获得者讲师的决策支持系统

Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA) Pub Date : 2021-09-30 DOI: 10.54076/JUMPA.V1I2.124

Nissi Pangaribuan

引用次数: 0

Disaster Preparedness Analysis At Intensive Health Centers In Toba Regency In 2020 2020年多巴县重症医疗中心的备灾分析

Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA) Pub Date : 2021-09-30 DOI: 10.54076/jumpa.v1i2.153

Mangapul Pardede, Herlina J. EL- Matury, Saiful Batubara

{"title":"Disaster Preparedness Analysis At Intensive Health Centers In Toba Regency In 2020","authors":"Mangapul Pardede, Herlina J. EL- Matury, Saiful Batubara","doi":"10.54076/jumpa.v1i2.153","DOIUrl":"https://doi.org/10.54076/jumpa.v1i2.153","url":null,"abstract":"This study analyzes the level of disaster preparedness in inpatient health centers in Toba Regency. The variables studied were disaster potential, structural safety, non-structural safety, and functional aspects. The results showed that the preparedness scores for the Ajibata Inpatient Health Center and the Parsoburan Inpatient Health Center required both inpatient health centers to intervene in the near future because they still had risks when facing disasters. Meanwhile, the Laguboti Inpatient Health Center is considered capable of protecting human life and still functioning in the event of a disaster. The structural safety score of the Ajibata Inpatient Health Center reflects that the structural security is adequate for disaster events. Meanwhile, the Parsoburan Inpatient Health Center still has a risk for disaster events. The non-structural safety scores of the Ajibata and Laguboti Inpatient Health Centers both still have risks in dealing with disasters. The Parsoburan Inpatient Health Center is not ready to face a disaster. The value of the functional aspects of the three Inpatient Health Centers shows that the three Inpatient Health Centers are not functionally ready to face disaster events. It is recommended that the three Inpatient Health Centers should continue to improve disaster preparedness.","PeriodicalId":17729,"journal":{"name":"Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA)","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88662334","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

Making Oxalic Acid From Palm Oil Pelepah (Elaeis Guineensis) Through Nitric Acid Oxidation Reaction 硝酸氧化法从棕榈油Pelepah (Elaeis Guineensis)制备草酸

Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA) Pub Date : 2021-03-30 DOI: 10.54076/jumpa.v1i1.36

I. Rahmadi

引用次数: 0

Message Security Using a Combination of Hill Cipher and RSA Algorithms 使用Hill密码和RSA算法组合的消息安全

Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA) Pub Date : 2021-03-30 DOI: 10.54076/jumpa.v1i1.38

Yogi Suryo Santoso

引用次数: 1

The Effect of Mount Sinabung Volcanic Dust Mixture on The Strength of Construction Ceramics 锡纳朋火山粉尘混合物对建筑陶瓷强度的影响

Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA) Pub Date : 2021-03-30 DOI: 10.54076/jumpa.v1i1.32

Dosni Tahi Sipahutar

引用次数: 0

Manufacture and Characterization of Pineapple Leaf Fiber Composite Board With Polypropylene Adhesive 聚丙烯胶粘剂菠萝叶纤维复合板的制备及性能研究

Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA) Pub Date : 2021-03-30 DOI: 10.54076/jumpa.v1i1.37

Fatimah Marwa Nasution

{"title":"Manufacture and Characterization of Pineapple Leaf Fiber Composite Board With Polypropylene Adhesive","authors":"Fatimah Marwa Nasution","doi":"10.54076/jumpa.v1i1.37","DOIUrl":"https://doi.org/10.54076/jumpa.v1i1.37","url":null,"abstract":"Research has been conducted on the manufacture and characterization of pineapple leaf fiber composites – polypropylene matrix. Samples with comparison of pineapple leaf fiber composition: polypropylene matrix by 0 %: 100%, 5%: 95%, 10%:90%, 15%:85%, 20%;80%, and 25%:75%. The manufacture of SDN-PP composites, i.e. fiber soaked with NaOH 5% for 2 hours and then rinsed with clean water and dried, then weighed. Polypropylene and MAPP are effluxed with xylen solvent using a reflux device over a hot plate with a temperature of 17oC until melted. The polypropylene that has been diflux weighed in mass and pineapple leaf fibers are placed into a mold then pressed with a hot press at a temperature of 150oC for 30 minutes. The purpose of the study was to find out the physical and mechanical properties of pineapple leaf-matrix polypropylene fibers. Density values 0.75 g/cm3 to 0.9 g/cm3, water absorption values 0.54% to 14.38%, strong compressive values 25.09 MPa to 49.58 MPa, and strong values impact 9.74 J/mm2 to 34.18 J/mm2. Pineapple leaf fiber composite – the resulting polypropylene matrix can be categorized as a high-crust fiberboard (HF) and applied as a decorative board in accordance with the fiberboard standards set out in SNI 01-4449-2006.","PeriodicalId":17729,"journal":{"name":"Jurnal Matematika Dan Ilmu Pengetahuan Alam LLDikti Wilayah 1 (JUMPA)","volume":"118 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77400620","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