Indonesian Journal of Science and Technology最新文献_第7页

Developing Information Technology in OpenCourseWare: From Movements to Opportunities in Asia 在开放课程中发展信息技术:亚洲从运动到机遇

Indonesian Journal of Science and Technology Pub Date : 2020-05-26 DOI: 10.17509/IJOST.V5I3.24886

S. Saripudin, A. Djohar, D. Rohendi, A. Abdullah

{"title":"Developing Information Technology in OpenCourseWare: From Movements to Opportunities in Asia","authors":"S. Saripudin, A. Djohar, D. Rohendi, A. Abdullah","doi":"10.17509/IJOST.V5I3.24886","DOIUrl":"https://doi.org/10.17509/IJOST.V5I3.24886","url":null,"abstract":"This paper aims to summarize and analyze the Developing Information Technology in Open CourseWare (OCW) movements and new opportunities in Asia in the context of supporting the education process in higher education that is in accordance with the recent demands for graduate competency supported by IT innovation. The review method is carried out in 3 stages: searching and downloading articles, filtering and sorting, and final screening. The results of this review show that the OCW movement in Asia is growing rapidly, among others, due to IT innovation, stakeholder commitment, public awareness, and the need for quality teaching materials. In the era of web 5.0 technology, lecturers must have the competencies to develop electronic activities through the Web that make students truly active so that online learning actually takes place rather than the electronic reading process. The impact of IT innovation has brought drastic changes in the field of education in the learning process has become an effective driving tool for improving learning outcomes and achieving educational goals, one of the most recent innovations is OCW. OCW movement in Asia has progressed rapidly and significantly, although they experience transformations in accordance with technological developments and needs in the field.","PeriodicalId":37185,"journal":{"name":"Indonesian Journal of Science and Technology","volume":"134 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88863558","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: 6

A Mathematical Model of the Cognitive Semantics of the English Preposition ON 英语介词ON认知语义的数学模型

Indonesian Journal of Science and Technology Pub Date : 2020-04-01 DOI: 10.17509/IJOST.V5I1.22774

Ruswan Dallyono, D. Sukyadi, Lukmanul Hakim

{"title":"A Mathematical Model of the Cognitive Semantics of the English Preposition ON","authors":"Ruswan Dallyono, D. Sukyadi, Lukmanul Hakim","doi":"10.17509/IJOST.V5I1.22774","DOIUrl":"https://doi.org/10.17509/IJOST.V5I1.22774","url":null,"abstract":"This study aims to present a mathematical linguistic analysis in establishing the relations between TRs, LMs, potential senses, and actual senses by using the case of the preposition on found in academic texts under the framework of Trajector (TR) and Landmark (LM) configurations. Data were corpora taken from 10 bachelor’s theses written by Indonesian students. To sort the data, Ant Conc 3.4.1.0 was used to parse clauses or sentences based on the TR-LM configurations. Based on the TR-LM configurations, a mathematical model was developed to discover how these variables are quantitatively related to the number of potential senses produced by using a geometric representation of TR and LM. This study indicates that the relation between TRs and LMs, on the one hand, and the sum of potential senses, on the other, follows the integral function of , which means that the total number of potential senses of Ps equals the integral of TR with respect to LM. Meanwhile, the total number of actual senses, ∑As can be obtained by the integral function of , which equals TR.LM + C where C is -Ls representing the constant of the number of lost senses. This mathematical modeling confirms that TR-LM configurations may be used to generate senses which prove the polysemous nature of prepositions.","PeriodicalId":37185,"journal":{"name":"Indonesian Journal of Science and Technology","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82382213","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

How bibliographic dataset portrays decreasing number of scientific publication from Indonesia 书目数据集如何描述印度尼西亚科学出版物数量的减少

Indonesian Journal of Science and Technology Pub Date : 2020-02-19 DOI: 10.17509/IJOST.V5I1.22265

A. Nandiyanto, M. K. Biddinika, F. Triawan

{"title":"How bibliographic dataset portrays decreasing number of scientific publication from Indonesia","authors":"A. Nandiyanto, M. K. Biddinika, F. Triawan","doi":"10.17509/IJOST.V5I1.22265","DOIUrl":"https://doi.org/10.17509/IJOST.V5I1.22265","url":null,"abstract":"Indonesia faces decreasing in its number during period of 2018-2019 according to SINTA (Indonesian scientific indexing) database. This situation is alarming amid country’s effort to improve its research and development from which the scientific publication has been used as a measure. This article presents a dataset of bibliometric from all Indonesian institutions (424 institutions as of January 2020) indexed by Scopus database. We collected data on documents per year and document type. Different from other datasets, this article presents longitudinal data from 2014-2019, in which during this period dramatic change occurs from steep rise, exponential, and degradation during 2018-2019. We analyzed publication number from leading institutions at different points in time and compared document types (i.e., number of journal article and conference paper, in which both types are the driving force of Indonesia’s growing scientific publication number). Since this dataset covers all country’s institutions, it is potential for reuse by policy makers in research and development, researchers from each institution, as well as other stakeholders.","PeriodicalId":37185,"journal":{"name":"Indonesian Journal of Science and Technology","volume":"54 5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83362639","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: 36

A Design and performance analysis of a telemetry system for remote monitoring of turbidity of water during the COVID-19 pandemic 新型冠状病毒病疫情期间水体浑浊度远程监测遥测系统设计与性能分析

Indonesian Journal of Science and Technology Pub Date : 2020-01-01 DOI: 10.17509/IJOST.V5I2.24705

L. Hasanah, W. L. Hakim, A. Aminudin, S. K. Sahari, B. Mulyanti

{"title":"A Design and performance analysis of a telemetry system for remote monitoring of turbidity of water during the COVID-19 pandemic","authors":"L. Hasanah, W. L. Hakim, A. Aminudin, S. K. Sahari, B. Mulyanti","doi":"10.17509/IJOST.V5I2.24705","DOIUrl":"https://doi.org/10.17509/IJOST.V5I2.24705","url":null,"abstract":"A turbidity telemetry system for COVID-19 pandemic situations using nRF24L01+transceiver and SEN0189 water turbidity sensor-based microcontroller has been successfuly developed.. The method used to characterize the sensor is by comparing sensor output voltages with the value of water turbidity. Turbid water used was created by adding distilled water with a concentration of sediment obtained from the filtered sediment with less than 60 μm in diameter. Data transmission performance for various transmit power was done by calculating the error percentages by comparing the number of messages sent by transmitter and received by receiver. The transmit power settings were 0, -6, -12, and 18 dBm and variations in the distance of data transmission from 10 to 80 m. The test results show that the water turbidity sensor has a good measurement range in measuring turbidity of water from 1.873 to 3500 NTU. Higher concentrations of sediment and turbidity of the water made the sensor output voltage decrease. There was a decrease in output voltage in the value, namely -0.0006 in turbidity sensor sensitivity. The results also show an increase in error percentages as the distance of data transmission increases, while the bigger the transmit power is used for data transmission, the smaller the percentage of errors occurs.","PeriodicalId":37185,"journal":{"name":"Indonesian Journal of Science and Technology","volume":"53 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72486602","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: 11

Question Generator System of Sentence Completion in TOEFL Using NLP and K-Nearest Neighbor 基于NLP和k近邻的托福句子补全问题生成系统

Indonesian Journal of Science and Technology Pub Date : 2019-09-01 DOI: 10.17509/IJOST.V4I2.18202

L. Riza, Anita Dyah Pertiwi, E. F. Rahman, M. Munir, C. U. Abdullah

{"title":"Question Generator System of Sentence Completion in TOEFL Using NLP and K-Nearest Neighbor","authors":"L. Riza, Anita Dyah Pertiwi, E. F. Rahman, M. Munir, C. U. Abdullah","doi":"10.17509/IJOST.V4I2.18202","DOIUrl":"https://doi.org/10.17509/IJOST.V4I2.18202","url":null,"abstract":"Test of English as a Foreign Language (TOEFL) is one of learning evaluation forms that requires excellent quality of questions. Preparing TOEFL questions using a conventional way certainly spends a lot of time. Computer technology can be used to solve the problem. Therefore, this research was conducted in order to solve the problem of making TOEFL questions with sentence completion type. The built system consists of several stages: (1) input data collection from foreign media news sites with excellent English grammar quality; (2) preprocessing with Natural Language Processing (NLP); (3) Part of Speech (POS) tagging; (4) question feature extraction; (5) separation and selection of news sentences; (6) determination and value collection of seven features; (7) conversion of categorical data value; (8) target classification of blank position word with K-Nearest Neighbor (KNN); (9) heuristic determination of rules from human experts; and (10) options selection or distraction based on heuristic rules. After conducting the experiment on 10 news, it is obtained that 20 questions based on the results of the evaluation showed that the generated questions had a very good quality with percentage of 81.93% (after the assessment by the human expert), and 70% was the same blank position from the historical data of TOEFL questions. So, it can be concluded that the generated question has the following characteristics: the quality of the result follows the data training from the historical TOEFL questions, and the quality of the distraction is very good because it is derived from the heuristics of human experts.","PeriodicalId":37185,"journal":{"name":"Indonesian Journal of Science and Technology","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83781658","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

Adaptive Mixed Finite Element Method for Elliptic Problems with Concentrated Source Terms 集中源项椭圆型问题的自适应混合有限元法

Indonesian Journal of Science and Technology Pub Date : 2019-07-09 DOI: 10.17509/IJOST.V4I2.18183

M. Ilyas, A. Garnadi, S. Nurdiati

引用次数: 0

High Unemployment Records of Graduated Students in the Development of Urban Agriculture in the Gaza Strip 加沙地带城市农业发展中毕业生的高失业记录

Indonesian Journal of Science and Technology Pub Date : 2019-07-09 DOI: 10.17509/IJOST.V4I2.18176

H. Al-Najar, H. Khalil, Y. Rahayu

{"title":"High Unemployment Records of Graduated Students in the Development of Urban Agriculture in the Gaza Strip","authors":"H. Al-Najar, H. Khalil, Y. Rahayu","doi":"10.17509/IJOST.V4I2.18176","DOIUrl":"https://doi.org/10.17509/IJOST.V4I2.18176","url":null,"abstract":"Urban agriculture plays a significant role in national development by contributing towards food security, job creation, and income generation. This study aims to assess the effect of unemployment records in graduated students in the recovery of the agricultural sector and the input to food security. A combination of both quantitative and qualitative research methods was employed in this study. In the quantitative design, 129 randomly selected urban farmers, completed the self-administered close-ended questionnaires, whereas the statistical analysis presents the socio-demographic, economic, and other aspects of the households. Based on the study result, around 2500 students graduated annually from 29 high educational institutes in Gaza Strip. The unemployment rate is around 41%, therefore the graduated students found that urban agriculture is contributing to create more jobs opportunities and improving household income. The analysis showed that 18% of the urban farmers are illiterate, 31% passed primary education, 25% passed secondary education, and 26% are holding university degrees in different fields. It is highly recommend to include urban agriculture in the future plans of the ministry of labours, ministry of agriculture, and all relevant institutions to overcome the high unemployment records and to alleviate poverty in Gaza.","PeriodicalId":37185,"journal":{"name":"Indonesian Journal of Science and Technology","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90062563","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

Optimization and Interpretation of Heat Distribution in Sterilization Room Using Convection Pipe 对流管灭菌室热分布的优化与解释

Indonesian Journal of Science and Technology Pub Date : 2019-07-09 DOI: 10.17509/IJOST.V4I2.18177

A. Abdurrahman, R. Umam, I. Irzaman, E. Palupi, A. Saregar, M. Syazali, R. Junaidi, Benny Wahyudianto, L. Adi

{"title":"Optimization and Interpretation of Heat Distribution in Sterilization Room Using Convection Pipe","authors":"A. Abdurrahman, R. Umam, I. Irzaman, E. Palupi, A. Saregar, M. Syazali, R. Junaidi, Benny Wahyudianto, L. Adi","doi":"10.17509/IJOST.V4I2.18177","DOIUrl":"https://doi.org/10.17509/IJOST.V4I2.18177","url":null,"abstract":"In mushroom cultivation of white oyster mushroom (P. ostreatus), problems in the contamination during the production are typically found. This contamination is due to the issue in controlling temperature during the media sterilization for growing the fungus (bag-log). This suboptimal sterilization causes unwanted bacteria and spores to grow. To reduce the amount of contamination, the purpose of this study was to demonstrate and evaluate the temperature distribution using one convection pipe with diameter of 6 and 8 cm. The fuel used for this sterilization process is rice husk. Sterilization itself aims to kill other unwanted bacteria and spores on the bag-log. Sterilization was done by traditional steaming bag-log drums arranged in four rows upwards for 6 hours. Convection pipes were built in drums. The steamer was done by performing two retrievals of data. From the experiment results, the use of convection pipe of 8 cm was better than the convection pipe of 6 cm. This is shown from the amount of fungal contamination in convection pipes were less in 8. The result of temperature measurement using dual laser infrared thermometer was also completed and interpreted using Matrix Laboratory with interpolation method to get heat distribution result.","PeriodicalId":37185,"journal":{"name":"Indonesian Journal of Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74185779","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: 21

Investigation of a Cruising Fixed Wing Mini Unmanned Aerial Vehicle Performance Optimization 巡航固定翼微型无人机性能优化研究

Indonesian Journal of Science and Technology Pub Date : 2019-07-09 DOI: 10.17509/IJOST.V4I2.18185

Shahrooz Eftekhari, A. Al-Obaidi

{"title":"Investigation of a Cruising Fixed Wing Mini Unmanned Aerial Vehicle Performance Optimization","authors":"Shahrooz Eftekhari, A. Al-Obaidi","doi":"10.17509/IJOST.V4I2.18185","DOIUrl":"https://doi.org/10.17509/IJOST.V4I2.18185","url":null,"abstract":"The applications of unmanned aerial vehicles have been extended through the recent decades and they are utilized for both civil and military applications. The urge to utilize unmanned aerial vehicles for civil purposes has elevated researchers and industries interest towards the mini unmanned aerial vehicle (MUAV) category due to its suitable configurations and capabilities for multidisciplinary civil purposes. This study is an effort to further enhance the aerodynamic efficiency of MUAVs through a parametric study of the wing and proposing an innovative bioinspired wing design. The research is conducted utilizing numerical simulation and experimental validation. This research provides a better understanding of different wing parameter(s) effect on the aerodynamic performance of the wing and mini unmanned aerial vehicles. A new wing configuration is designed, implemented and evaluated. The wing is named as Alpine since it is inspired by biomimicry of alpine swift bird. Evaluation of the new wing geometry shows that the Alpine wing geometry performs 35.9% more efficient compared to an existing wing with similar wing area. Hence, the aerodynamic efficiency optimization is achieved for the Alpine wing which helps to enhance the performance of MUAVs.","PeriodicalId":37185,"journal":{"name":"Indonesian Journal of Science and Technology","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75218875","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: 7

Nano Metal-Organic Framework Particles (i.e. MIL-100(Fe), HKUST-1(Cu), Cu-TPA, and MOF-5(Zn)) using a solvothermal process 纳米金属有机骨架粒子(即MIL-100(Fe)， HKUST-1(Cu)， Cu- tpa和MOF-5(Zn))采用溶剂热法

Indonesian Journal of Science and Technology Pub Date : 2019-07-09 DOI: 10.17509/IJOST.V4I2.18178

A. Nandiyanto

{"title":"Nano Metal-Organic Framework Particles (i.e. MIL-100(Fe), HKUST-1(Cu), Cu-TPA, and MOF-5(Zn)) using a solvothermal process","authors":"A. Nandiyanto","doi":"10.17509/IJOST.V4I2.18178","DOIUrl":"https://doi.org/10.17509/IJOST.V4I2.18178","url":null,"abstract":"Metal-organic framework (MOF) is attractive because of its representation as a class of crystalline porous materials with excellent properties, specifically its chemical functionality and high porosity, making it potentially tailored for various desired applications. Although the synthesis of MOFs have been well-documented, most reports are in the bulk and micrometer sizes. The synthesis of MOFs in the smaller size is still inevitable. This work reports the synthesis of nano MOF particles (i.e., MIL-100(Fe), HKUST-1(Cu), Cu-TPA, and MOF-5(Zn)). In the experiment, MOFs were created by interacting ligands and metal ions in the specific solvent in the solvothermal process. Different from other reports, this study used low concentrations of ligands and metal ions, in which this is effective to control ligand-metal ion interaction, reaction, nucleation, and growth of MOF. The successful synthesis was obtained and effective for various MOF particles by changing types of ligands and metal ions. The study also obtained that compatibility and dilution of the ligands and the metal ions in the specific solvent are important parameters. This information will bring new strategies and further developments for the synthesis of MOF materials for wider range of potential applications in separation, catalysis, dye adsorption, and drug carrier uses.","PeriodicalId":37185,"journal":{"name":"Indonesian Journal of Science and Technology","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81027192","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: 6