Pub Date : 2023-06-24DOI: 10.55338/saintek.v4i3.1140
Yulia Miranda Saragih, Maria Cosmas Salsa Sitinjak, Rizky Juliansyah, Sonia Arnsiah Siregar, Liharman Saragih
− Motorcycles as one of the automotive industries in Indonesia grew rapidly within seven years after the 1998 monetary crisis. In 2005 the population of motorcycles in Indonesia had exceeded 25 million units, while motorcycle sales data until the end of 2006 showed a relatively slow growth rate. tall. Motorcycles are the prima donna for most Indonesian people. The results of the analysis obtained t values > from t table with a regression coefficient value of 2.624 > 2.009. it can be concluded that the advertising variable (X1) partially influences the purchase decision (Y). Purchase decisions are influenced by advertising by 48.8%, while the remaining 51.2% is explained by other variables not examined. This means that advertising has a positive effect on purchasing decisions for the Honda Vario FI in Pematangsiantar City. Simultaneously testing the variable Advertising and Work brand image on purchasing decisions is carried out by the f test. The test results with the help of SPSS obtained an F value of 33.87 with a significance of 0.000. The F value obtained > 3.20 and supported by a significance value < 0.05 indicates that the two independent variables together have a positive and significant influence on the dependent variable. This is supported by the results of testing the coefficient of determination which shows that the magnitude of the influence of the two variables simultaneously is 48.8% which can explain the employee purchasing decision variable. While the remaining 51.2% is the influence of other variables not examined.
{"title":"Pengaruh Periklanan, Citra Merek Terhadap Keputusan Pembelian Sepeda Motor Honda Vario Fi Di Pematangsiantar","authors":"Yulia Miranda Saragih, Maria Cosmas Salsa Sitinjak, Rizky Juliansyah, Sonia Arnsiah Siregar, Liharman Saragih","doi":"10.55338/saintek.v4i3.1140","DOIUrl":"https://doi.org/10.55338/saintek.v4i3.1140","url":null,"abstract":"− Motorcycles as one of the automotive industries in Indonesia grew rapidly within seven years after the 1998 monetary crisis. In 2005 the population of motorcycles in Indonesia had exceeded 25 million units, while motorcycle sales data until the end of 2006 showed a relatively slow growth rate. tall. Motorcycles are the prima donna for most Indonesian people. The results of the analysis obtained t values > from t table with a regression coefficient value of 2.624 > 2.009. it can be concluded that the advertising variable (X1) partially influences the purchase decision (Y). Purchase decisions are influenced by advertising by 48.8%, while the remaining 51.2% is explained by other variables not examined. This means that advertising has a positive effect on purchasing decisions for the Honda Vario FI in Pematangsiantar City. Simultaneously testing the variable Advertising and Work brand image on purchasing decisions is carried out by the f test. The test results with the help of SPSS obtained an F value of 33.87 with a significance of 0.000. The F value obtained > 3.20 and supported by a significance value < 0.05 indicates that the two independent variables together have a positive and significant influence on the dependent variable. This is supported by the results of testing the coefficient of determination which shows that the magnitude of the influence of the two variables simultaneously is 48.8% which can explain the employee purchasing decision variable. While the remaining 51.2% is the influence of other variables not examined.","PeriodicalId":31905,"journal":{"name":"Sainstek Jurnal Sains dan Teknologi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135904394","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}
We characterize a graded simple module in the setting Leavitt path algebras L which is the completely prime module. Let m M and r A, an A-module M is called a completely prime module if for one m M and r A then 0 or m = 0. In this article, we show that If u is a sink or an infinite emitter, then a graded simple module which is simple is not a completely prime module.
{"title":"Completely Prime Modules for Graded Simple Modules Which is Simple Over Leavitt Path Algebra","authors":"Risnawita Risnawita, Z. Zubaidah","doi":"10.31958/js.v15i1.9202","DOIUrl":"https://doi.org/10.31958/js.v15i1.9202","url":null,"abstract":"We characterize a graded simple module in the setting Leavitt path algebras L which is the completely prime module. Let m M and r A, an A-module M is called a completely prime module if for one m M and r A then 0 or m = 0. In this article, we show that If u is a sink or an infinite emitter, then a graded simple module which is simple is not a completely prime module.","PeriodicalId":31905,"journal":{"name":"Sainstek Jurnal Sains dan Teknologi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75571422","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}
This study was to investigate prospective biology teachers' views towards the theory of evolution at Islamic university. This study was concerned to investigate the quality of the instruments, the profile of literacy, attitudes, and religiosity of PBTs-IU, and the relationship between literacy and attitude towards the theory of evolution with religiosity. An explanatory mixed method was conducted by using a quantitative survey and in-depth interviews. A total of 153 (16 males and 137 females) from 185 prospective biology teachers at Islamic University (PBTs-IU) participated in filling out the questionnaire. Confirmatory factor analysis and Cronbach's alpha tests have been conducted to examine the quality of the instrument. PBTs-IU profiles were analyzed by descriptive statistical test, and a correlation test was used to determine the relationship between variables. Furthermore, triangulation was chosen to analyze the results of the interviews. The results of this study showed that the instruments used are valid and reliable, the profile of literacy, attitudes, and religiosity of PBTs-IU was high level, and there was a positive and significant relationship at the 0.01 and 0.05 levels between literacy and religiosity and attitudes and religiosity. These findings concluded that PBTs-IU have good knowledge of the theory of evolution, and PBTs-IU also have strong religious beliefs.
{"title":"Prospective Biology Teachers’ View towards Theory of Evolution: A Case Study at Islamic University in Indonesia","authors":"M. Haviz","doi":"10.31958/js.v15i1.9342","DOIUrl":"https://doi.org/10.31958/js.v15i1.9342","url":null,"abstract":"This study was to investigate prospective biology teachers' views towards the theory of evolution at Islamic university. This study was concerned to investigate the quality of the instruments, the profile of literacy, attitudes, and religiosity of PBTs-IU, and the relationship between literacy and attitude towards the theory of evolution with religiosity. An explanatory mixed method was conducted by using a quantitative survey and in-depth interviews. A total of 153 (16 males and 137 females) from 185 prospective biology teachers at Islamic University (PBTs-IU) participated in filling out the questionnaire. Confirmatory factor analysis and Cronbach's alpha tests have been conducted to examine the quality of the instrument. PBTs-IU profiles were analyzed by descriptive statistical test, and a correlation test was used to determine the relationship between variables. Furthermore, triangulation was chosen to analyze the results of the interviews. The results of this study showed that the instruments used are valid and reliable, the profile of literacy, attitudes, and religiosity of PBTs-IU was high level, and there was a positive and significant relationship at the 0.01 and 0.05 levels between literacy and religiosity and attitudes and religiosity. These findings concluded that PBTs-IU have good knowledge of the theory of evolution, and PBTs-IU also have strong religious beliefs.","PeriodicalId":31905,"journal":{"name":"Sainstek Jurnal Sains dan Teknologi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90086134","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}
Pub Date : 2023-01-01DOI: 10.37277/stch.v32i4.1444
{"title":"Manajemen Bandwidth Pelanggan Pada Jaringan PS Core Menggunakan Service Aware Policy Control Sebagai PCRF","authors":"","doi":"10.37277/stch.v32i4.1444","DOIUrl":"https://doi.org/10.37277/stch.v32i4.1444","url":null,"abstract":"","PeriodicalId":31905,"journal":{"name":"Sainstek Jurnal Sains dan Teknologi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87500839","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}
Isnani Agriandita, Abdul Kamid, Reza Luthfi Atha Wijaya
ESP is an artificial lift with the principle of a centrifugal pump, where the production fluid that enters through the intake will be thrown by the impeller into the diffuser which will then be directed to the impeller above it so that this process repeats until the production fluid reaches the surface. The longer the production well is produced, the smaller or weakened the Pwf pressure will be, therefore an evaluation is needed in order to produce optimal production. The data needed include: well production rate (Qo), well flow pressure (Pwf), Pump Intake Pressure (PIP), Total Dynamic Head (TDH), Pump type, namely IND-1000 pump, Number of stages, Type of motor, HP motor, motor voltage, Electric current, OD motor, Total voltage, and Total starting voltage. The evaluation methodology used is to determine the optimum production rate through IPR calculations using the vogel method, Pump Intake Pressure (PIP), Total Dynamic Head (TDH), number of stages, and horse power (HHP). From the results of this evaluation, the optimal production rate (Qopt) value was obtained, which was 988.552 BPD. This optimal production rate value is still included in the capacity range, which is between 600-1260 BFPD. Because the optimal production rate is still within the range capacity, this production well does not require a new pump replacement.
{"title":"Evaluation Study of Electric Submersible Pump (ESP) IND-1000 Pump Model with Analysis of the Flow Rate of Crude Oil in Production Well","authors":"Isnani Agriandita, Abdul Kamid, Reza Luthfi Atha Wijaya","doi":"10.31958/js.v14i2.7124","DOIUrl":"https://doi.org/10.31958/js.v14i2.7124","url":null,"abstract":"ESP is an artificial lift with the principle of a centrifugal pump, where the production fluid that enters through the intake will be thrown by the impeller into the diffuser which will then be directed to the impeller above it so that this process repeats until the production fluid reaches the surface. The longer the production well is produced, the smaller or weakened the Pwf pressure will be, therefore an evaluation is needed in order to produce optimal production. The data needed include: well production rate (Qo), well flow pressure (Pwf), Pump Intake Pressure (PIP), Total Dynamic Head (TDH), Pump type, namely IND-1000 pump, Number of stages, Type of motor, HP motor, motor voltage, Electric current, OD motor, Total voltage, and Total starting voltage. The evaluation methodology used is to determine the optimum production rate through IPR calculations using the vogel method, Pump Intake Pressure (PIP), Total Dynamic Head (TDH), number of stages, and horse power (HHP). From the results of this evaluation, the optimal production rate (Qopt) value was obtained, which was 988.552 BPD. This optimal production rate value is still included in the capacity range, which is between 600-1260 BFPD. Because the optimal production rate is still within the range capacity, this production well does not require a new pump replacement.","PeriodicalId":31905,"journal":{"name":"Sainstek Jurnal Sains dan Teknologi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75777786","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}
Resy Rahmi Syafitri, I. N. Yenti, Dahlia Fisher, R. Efendi
This study creates a valid, practical, and effective discovery-based module to improve students' ability to solve mathematical problems on quadrilateral content. This study employs the definition, design, and development phases of the research and development process. Validation sheets, student response questionnaires, and test questions were the study tools utilized. Techniques for data analysis using percentages and N-gain. Based on the findings of a study using guided exploration modules to enhance students' ability to solve quadrilateral problems in class VII SMP, which was valid with 76.92%. Results from the practicality test with practical categories were 79.37%. Student ability to solve mathematical problems shows effectiveness. The increase in the mathematical problem-solving ability of each student is in the medium category with an average N-gain of 0.48139.
{"title":"Development of a Guided-Discovery Learning-Based Module to Improve Mathematical Problem-Solving Ability on Quadrangle Materials","authors":"Resy Rahmi Syafitri, I. N. Yenti, Dahlia Fisher, R. Efendi","doi":"10.31958/js.v14i2.7677","DOIUrl":"https://doi.org/10.31958/js.v14i2.7677","url":null,"abstract":"This study creates a valid, practical, and effective discovery-based module to improve students' ability to solve mathematical problems on quadrilateral content. This study employs the definition, design, and development phases of the research and development process. Validation sheets, student response questionnaires, and test questions were the study tools utilized. Techniques for data analysis using percentages and N-gain. Based on the findings of a study using guided exploration modules to enhance students' ability to solve quadrilateral problems in class VII SMP, which was valid with 76.92%. Results from the practicality test with practical categories were 79.37%. Student ability to solve mathematical problems shows effectiveness. The increase in the mathematical problem-solving ability of each student is in the medium category with an average N-gain of 0.48139.","PeriodicalId":31905,"journal":{"name":"Sainstek Jurnal Sains dan Teknologi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82138082","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}
Human hair can absorb elements that enter the body through food/digestion, respiration and skin. The presence and concentration of an element in the hair can reflect the state/health status in which a person lives and works. The sulfhydryl and disulfide groups in hair are able to bind trace elements that enter the body and then are bound in the hair. This study aims to determine the levels of Lead (Pb) in the hair of motorcycle workshop workers (mechanics) in the city of Padang. The type of research used in this study is a descriptive survey, which is to describe the levels of Lead (Pb) in the hair of motorcycle mechanical in Padang City. Laboratory examination using Atomic Absorption Spectrophotometry (AAS) method to determine quantitatively lead (Pb) levels using are 10 samples. Based on result show that there are 8 respondents who were positively exposed to lead (Pb) but still in normal levels. And the highest lead (Pb) value was in hair sample 6, which was 0.9404 mg/kg. The benefits of this research are input and information about the dangers of lead pollution which can harm health.
{"title":"Description of Levels of Lead (Pb) in Hair of Motorcycle Workshop Workers (Mechanical) in Padang City","authors":"Marisa Marisa, Suci Susilawati","doi":"10.31958/js.v14i2.4978","DOIUrl":"https://doi.org/10.31958/js.v14i2.4978","url":null,"abstract":"Human hair can absorb elements that enter the body through food/digestion, respiration and skin. The presence and concentration of an element in the hair can reflect the state/health status in which a person lives and works. The sulfhydryl and disulfide groups in hair are able to bind trace elements that enter the body and then are bound in the hair. This study aims to determine the levels of Lead (Pb) in the hair of motorcycle workshop workers (mechanics) in the city of Padang. The type of research used in this study is a descriptive survey, which is to describe the levels of Lead (Pb) in the hair of motorcycle mechanical in Padang City. Laboratory examination using Atomic Absorption Spectrophotometry (AAS) method to determine quantitatively lead (Pb) levels using are 10 samples. Based on result show that there are 8 respondents who were positively exposed to lead (Pb) but still in normal levels. And the highest lead (Pb) value was in hair sample 6, which was 0.9404 mg/kg. The benefits of this research are input and information about the dangers of lead pollution which can harm health.","PeriodicalId":31905,"journal":{"name":"Sainstek Jurnal Sains dan Teknologi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79028657","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}
Muhammad Farhan Ramadhan, W. Wahyudin, Billy Nugraha
{"title":"PERANCANGAN ALAT BANTU YANG ERGONOMI DENGAN SOFTWARE AUTOCAD UNTUK MENUNJANG PROSES PRODUKSI KERUPUK KULIT","authors":"Muhammad Farhan Ramadhan, W. Wahyudin, Billy Nugraha","doi":"10.36275/stsp.v22i2.544","DOIUrl":"https://doi.org/10.36275/stsp.v22i2.544","url":null,"abstract":"","PeriodicalId":31905,"journal":{"name":"Sainstek Jurnal Sains dan Teknologi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72595392","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}
{"title":"PERANCANGAN SISTEM INFORMASI KENAIKAN PANGKAT DAN GOLONGAN GURU SMKN 1 SAWAHLUNTO BERBASIS WEB","authors":"Eko Amri Jaya, Indah Febriyani, R. Putra","doi":"10.36275/stsp.v22i2.546","DOIUrl":"https://doi.org/10.36275/stsp.v22i2.546","url":null,"abstract":"","PeriodicalId":31905,"journal":{"name":"Sainstek Jurnal Sains dan Teknologi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81560868","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}
This study aims to examine the total cost savings of PLN's electricity bill, which is quite high during the dry season, by using solar panels on a building's roof. The study took place at the PTPN VI Kayu Aro Tea Factory in Kerinci Regency, Jambi Province. Because using renewable energy sources is more complicated than using Microhydro resources, a Hybrid Optimization Model of Electric Renewable (HOMER) application program is required. This application program is used to determine the lowest Initial Cost, Cost Of Energy (COE)
这项研究的目的是通过在建筑物的屋顶上使用太阳能电池板来检查PLN在旱季相当高的电费账单的总成本节约。该研究在占碑省Kerinci Regency的PTPN VI Kayu Aro茶厂进行。由于利用可再生能源比利用微水电资源更为复杂，因此需要建立电力可再生能源应用程序的混合优化模型(HOMER)。此应用程序用于确定最低初始成本，即能源成本(COE)。
{"title":"ANALISIS MODE SISTEM PEMBANGKIT HYBRID BERKELANJUTAN PLTMH-PLN DENGAN SOLAR CELL MENGGUNAKAN HELIOSCOPE DAN HOMER","authors":"Sepannur Bandri, Rafika Andari, Liliana Liliana, Rendisky Rendisky","doi":"10.36275/stsp.v22i2.523","DOIUrl":"https://doi.org/10.36275/stsp.v22i2.523","url":null,"abstract":"This study aims to examine the total cost savings of PLN's electricity bill, which is quite high during the dry season, by using solar panels on a building's roof. The study took place at the PTPN VI Kayu Aro Tea Factory in Kerinci Regency, Jambi Province. Because using renewable energy sources is more complicated than using Microhydro resources, a Hybrid Optimization Model of Electric Renewable (HOMER) application program is required. This application program is used to determine the lowest Initial Cost, Cost Of Energy (COE)","PeriodicalId":31905,"journal":{"name":"Sainstek Jurnal Sains dan Teknologi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86231782","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}
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