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International Journal Of Science, Technology & Management (IJSTM)
Published by CV. Inara
ISSN : -     EISSN : 27224015     DOI : doi.org/10.46729
Core Subject : Science, Education, Agriculture, Engineering,
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation
International Journal of Science, Technology & Management (IJSTM) is an international scholarly refereed research journal which aims to promote the theory and practice of science, technology, innovation, engineering and management.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 31 Documents
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Search results for , issue "Vol. 1 No. 4 (2020): November" : 31 Documents clear
Analysis of Type Cover on Drying Rate and Moisture Content Anggara, Mietra; Irfan
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November
Publisher : International Journal of Science, Technology & Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.75

Abstract

Seaweed is one of the marine commodities that has high economic value and benefits for humans, because seaweed can be processed into basic food ingredients and various types of products such as seaweed lunkhead, gelatin, cosmetic medicines and so on. The post-harvest handling process for the Papuan community, Kec. Taliwang, West Sumbawa Regency (NTB) is still done traditionally so natural drying usually takes a long time because the temperature and energy depend on sunlight. This will lead to a decline in the quality of seaweed products because temperature and energy depend on sunlight. One of the efforts to improve the quality of seaweed production is to reduce the water content, the maximum water content limit, which meets SNI 25% - 50%. In this study, four forms of cover were used, namely the cover form of a single oblique solar dryer, the cover form of the taper solar dryer, the cover form of the double slanted solar dryer, the cover form of the rectangular prism solar dryer. The peak drying rate lies on a double sloping cover of 0.40 g / minute, a taper cover of 0.37 g / minute, a rectangular prism cover of 0.34 g / minute and a single sloping cover of 0.30 g / minute. The hot peaks that are useful are located on a double sloping cover of 3.82 Watt, a taper cover of 2.80 Watt, a rectangular prism cover of 2.09 Watt and a single cover of 0.46 Watt. The peak of efficiency lies in the double sloping cover of 8.57%, taper cover of 6.28%, rectangular prism cover of 4.69% and single sloping cover of 2.28%. The peak of seaweed residual water content lies on a double sloping cover of 13.21%, a taper cover of 19.61%, a rectangular prism cover of 25.73 and a double sloping cover of 27.75%. This shows that drying using double sloping covers is more effective and efficient, so it can accelerate the drying rate and can increase the selling price of seaweed for seaweed farmers in Kertasari Village, Taliwang District, West Sumbawa (NTB).
Smart City Concept for Integrated Citizen Information Smart Card or ICISC in DKI Jakarta Muhammad Syarif Hartawan; Arman Syah Putra; Ayub Muktiono
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November
Publisher : International Journal of Science, Technology & Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.76

Abstract

Abstract. The development of cities that adopt smart is very much around the world, many cities in the world have developed the concept of a smart city in all aspects of life from identity to law enforcement systems in the traffic sector, smart cities have begun to be implemented in the city of Jakarta from 2000 onwards, Starting from the online payment system to the use of CCTV in law enforcement in the city of Jakarta, almost all aspects of government have used the system, from absences to public service applications, in this study using the literature review method, by studying many previous studies in order to deepen research that is is being carried out and finding renewable research problems, this research will produce a proposed system that can be used in the future as a concept for the development of a smart city Jakarta, with the proposed system as renewable research from existing research.
Effect of Variations and Types of Filler on Compressive Strength and Density of CLC Light Bricks Dwi Pangga; Dwi Sabda Budi Prasetya; Habibi
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November
Publisher : International Journal of Science, Technology & Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.77

Abstract

Abstract. In the process of producing light brick, there is ‘mixed foam’ agent to reduce the value of its density, therefore it can reduce the values of compressive strength. To reduce its density and increase the value of pressure, the variations and types of fillers must match the composition. The manufacture of light brick type CLC (Cellular Lightweight Concrete) has been carried out with several variations and types of fillers to compare the values ​​of compressive strength and density. The fillers are as follows: Water Hyacinth, Banana Midrib, and Wood Shavings based on gold processing waste (GPW). The compressive strength and density test results on various filler percentages are as follows: 1). Water hyacinth at the percentage of 0%, 15%, 30%, 45%, 60% has compressive strength: (2.43; 0.73; 0.69; 0.59; 0.65) MPa while the densities are ( 1.62; 1.20; 1.41; 1.13; 1.20) gr / cm3. 2). Banana midrib with variations are: 0-4 midribs has compressive strength: (2.43; 1.25; 1.68; 2.13; 1.32) MPa and its densities are (1.62; 1.29; 1.12; 1.16; 1.25) gr / cm3. 3). Wood shavings with percentage: 0%, 25%, 50%, 75% have compressive strength: (2.43; 1.39; 2.04; 1.72) MPa and their densities: (1.62; 1, 21; 1.26; 1.20) gr / cm3. The results showed that the best compressive strength was produced by the filler from wood shavings with an average of 1.85 MPa and a density of 1.31 gr / cm3. The lowest density was obtained from the banana midrib filler which was 1.29 gr / cm3 with a compressive strength of 1.76 MPa. It can be concluded that light brick is best suited to wood shavings fillers.
Effects of Temperature and Heating Time on Degradation and Antioxidant Activity of Anthocyanin from Roselle Petals (Hibiscus sabdariffa L.) Meiny Suzery; Burhan Nudin; Damar Nurwahyu Bima; Bambang Cahyono
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November 2020
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.78

Abstract

The effects of temperature and heating time on the degradation and antioxidant activity of anthocyanin compounds from roselle petals (Hibiscus sabdariffa L.) have been evaluated from this research. The purpose of this study is to determine, the degradation and antioxidant activity of anthocyanin compounds on variations of temperature and heating time. In this study anthocyanin was extracted from roselle petals using ethanol solvent at 25oC. Then the anthocyanin extract obtained was dissolved into aqueous solution. The solution was then heated at 40oC, 60oC and 80oC for 60 minutes. The degradation of anthocyanin compounds was analyzed by calculating the total of anthocyanin contents, while the antioxidant activity was evaluated using the DPPH method. The results showed that Total Anthocyanin Content (TAC) from the extract solution before heating was 144.28 mg/L. Meanwhile the total value of anthocyanin in the 60 minutes after heating at 400C, 600C and 800C are 108.88 mg/L, 88.84 mg/L and 63.78 mg/L respectively. Heating at 80oC decreases antioxidant activity by increasing the IC50 value to 86.8 ppm higher than the conditions before heating. The increase of temperature and length of the heating process made the anthocyanin structure degraded. Degradation was indicated by the reduction of total anthocyanin content and the decrease of antioxidant activity.
The DevelopingOf Electronic Teaching Media and Programming Using Printed Circuit Board Solventing Rahmat Hidayat; Reza Setiawan; Vera Pangni Fahriani; Enjang Ahmad Juanda; Rusman
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November
Publisher : International Journal of Science, Technology & Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.79

Abstract

Karawang is one of the regency in West Java having many industrial area in Indonesia.One of the industrial field is electronic industry. This condition gives a chance to the graduatees of vocational High School students, especially electro major study, to gain an occupation and develop the entrepeneurship in the field of electronic appliances industry in Karawang. This research uses the methods of “rancang bangun”. Sequencely, the method is a neccesity of identification needed. Then, this neccessity is analysed to obtain the specifically component. Furthermore, it is conducted soft and hard applicance design, making and testing. The result working from PCB based on the direction from a microcontroller Atmega8 which have to control the servo motor spin and calcuyate the process timing device work. Before the program is undergone, the user have to reset the timer process solventing on the menu that can be set through LCD display. After the program is undergone, so the device will be working as the well made program.Timer will be working as fast as possible after being pressed the “run” button. When the solventing has achieved the setting value or mark, so the microcontroller will direct the step timer motor to stop working on and the buzzer will stop ringing until the reset button pressed or power bottom turning down.
Work Environment : How is It Influenced on Employee Performance? Lusiana Tulhusnah; Puryantoro; Rasidi
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November
Publisher : International Journal of Science, Technology & Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.82

Abstract

The productivity of employee performance can be determined by the conditions of the work environment. This of course will affect the success of the agency in determining its goals. The research objective was to determine the effect of the work environment on the performance of the employees of Abdurachman Saleh University (Unars). Quantitative research methods with a population of 66 UNARS employees and saturated sampling technique so that the sample is also 66 respondents. The data used are primary and secondary data. The data were analyzed using t test, determinant test and simple regression model using SPSS 22. The results showed a simple regression model Y = -2.7596 + 0.622X. Work environment (X) has a significant effect on the performance of UNARS employees. The contribution of the work environment to employee performance is 38.7%, which means that there is a significant influence relationsh
Preceptee Experience of Preceptorship in Universitas Sumatera Utara Teaching Hospital, Medan, Indonesia Rika Endah Nurhidayah; Hasmela Revi
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November
Publisher : International Journal of Science, Technology & Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.83

Abstract

University of Sumatra Utara Hospital (USU Hospital) is a teaching hospital managed by the university. USU Hospital as a teaching hospital guarantees the delivery of quality services, education and research and prioritizes learning programs for all professions at USU. Teaching hospitals need an ideal clinical learning model that can accommodate the curriculum that students must take. The study design is a qualitative phenomenology with the aim of exploring the perceived experience of implementing preceptor ship at USU hospitals. Research informants consists of 12 students whom are attending professional nursing education. Research data was collected in the process of Focus Group Discussion (FGD). The results found five themes, namely frequency of visits, methods of supervision, achievement of competence, self-confidence, and collaboration.
Prayer paper production facility layout redesign using systematic layout planning method and CRAFT J Tampubolon; L D Agoestine Simangunsong; M D Agustina Sibuea; A C Sembiring and A Mardhatillah
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November
Publisher : International Journal of Science, Technology & Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.84

Abstract

Abstract. The facility layout is a strategic design that is used for a long time. All manufacturing industries must pay attention to the right layout to increase the productivity of the industry. A prayer paper manufacturing industry located in the Tanjung Morawa area, Medan has an error in the placement of raw materials and the placement of production machines, so that the distance from the temporary warehouse to the printing and cutting work stations is far apart, causing high material handling costs. Seeing these problems, research was carried out to improve the layout of the facilities and redesign. The method used for this research is Systematic Layout Planning (SLP), which is one of the methods used to regulate a workplace in a factory by using two areas with high frequency and logical relationships with each other. And the Computerized Relative Allocation of Facilities Technique (CRAFT) Algorithm is a repair program, which is a program that looks for optimal design by making gradual improvements to the layout. CRAFT evaluates the layout by interchanging departmental locations. Inputs required for the CRAFT algorithm include initial layout, data flow or frequency of movement, cost data per unit distance, and the number of departments that do not change or remain. The CRAFT method is usually applied using Quantitative Systems (QS) software. By comparing the layout between SLP and CRAFT, the optimal result is obtained using the SLP method by reducing the distance between departments by 1.407 meters or a distance efficiency of 39.91%.
Improving Work Productivity Through Training, Discipline And Communication At PT. Linewin Martin; Dewi Rafiah Pakpahan
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November
Publisher : International Journal of Science, Technology & Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.85

Abstract

The purpose in this study is to analyze the influence of both partial and simultaneous training, discipline and communication on productivity. This research was conducted on PT. Linewin selected 117 production employees to sample. data collection using questionnaires with data analysis using SPSS 22. The results showed that training, discipline and communion had a positive and significant effect on productivity in PT. Linewin. Discipline variables have the most dominant influence in improving employee work productivity in PT. Linewin. Furthermore, the result of a determination coefficient of 69.1% of productivity variables can be explained by variations in training, discipline and communication variables and the remaining 40.9% is another variable not studied in this study
Mispronouncing of Consonant Alveolar Plosive /t/, and /d/ in The Final position in English byTarakanese Fithrah Auliya Ansar; arwissyahIrwan Duhir
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November
Publisher : International Journal of Science, Technology & Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.86

Abstract

This study aims to examine whether speakers who have a basic English language make mistakes in pronouncing the plosive / t /, / d / consonants due to the influence of the Tarakan language, which is the language of the speakers during their domicile in the area. A recording technique was used in collecting data. The instrument used is a list of words, sentences and paragraphs. The population in this study were English-bachelor students who had lived in Tarakan for a long time and were accustomed to using the Tarakan accent. The sampling technique used was purposive sample of 3 people. Data were analyzed using descriptive qualitative methods by analyzing the data of the transcription.The results of this study indicate that in pronouncing English consonants and vowels, there are still many students who do not pronounce them correctly. They make a lot of mistakes in pronouncing the plosive / d / correctly in every word. They tend to change it to / t /.

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