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Erifive Pranatal
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Journal of Applied Sciences, Management and Engineering Technology (JASMET)
Published by Institut Teknologi Adhi Tama Surabaya
ISSN : -     EISSN : 27212165     DOI : https://doi.org/10.31284/j.jasmet.2020.v1i1.704
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Journal of Applied Sciences, Management and Engineering Technology (JASMET) is an international peer-reviewed journal that was launched by LPPM ITATS. It is dedicated to provide a high-level platform in all aspect of science, management and engineering technology Scope of the journal: Engineering, Science and Management
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 56 Documents
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Literature Study : Activity-Based Costing System Setyaning, Larashati B'tari; Fara Dita, Andriani Okta
Journal of Applied Sciences, Management and Engineering Technology Vol 1, No 2 (2020)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2020.v1i2.1160

Abstract

Increasing competition forces companies to be competitive. Competitiveness can be achieved by conveying product value to consumers at low prices. To achieve this, a good cost approach is needed, one of which is the Activity-Based Costing System (ABC). In this literature study the authors divide ABC into 3 parts, namely the concept of ABC, the stages in ABC and the costs and benefits of implementing ABC. ABC is a cost approach method by calculating the cost of activities to produce products, both goods and services where these activities require resources. After conducting a literature study, the authors found similarities and inequalities among several literatures and then draw conclusions. The conclusion that can be drawn is that the ABC system is used by companies to get more accurate production costs, accurate production costs can increase company profits and the criteria for companies that are suitable for using the ABC system are companies with a high level of product diversity, there is intense competition with companies that produce similar products, as well as the cost of implementing the ABC system is low.
A function of Bioslurry Organic for Solid Fertilizer Dewi, Intan Suksma; Kusuma, Maritha Nilam; Pramestyawati, Talentnia
Journal of Applied Sciences, Management and Engineering Technology Vol 1, No 1 (2020)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2020.v1i1.877

Abstract

Indonesia is an agricultural country in which people mostly work as farmers and produce abundant farming outcomes. On one hand, the use of chemical fertilizer supports the plants growing well. On the other hand, it decreases the soil fertility and farming product quality. The alternative way to reduce or substitute the chemical fertilizer is by using organic fertilizer which can be made through composting method for 2 months mixing the leaf waste and rice straw. Before mixing both materials, the values of C, N, P, K and the water content of Bioslurry were respectively 15.17%, 0.27%, 0.3%, 0.05%, and 67.07%. Meanwhile, the values of C, N, P, K and the water content of leaf waste were consecutively 41.12%; 1.22%; 1.16%; 8.94%; and 28.77%. Moreover, the values of C, N, P, K, and the water content of rice straw were sequentially 39.42%; 1.20%; 1.05%; 10.07%; and 31.23%. After mixing both materials through composting method, the results of rice straw fertilizer got C-Organic 20.87%; N 2.01%; P 0.16%; K 5.64%; water 22.31%, and C/N ratio 16.38%. Meanwhile, the composting process of leaf waste yielded C-Organic 25.44%; N 1.18%; P 0.18%; K 7.95%; water 11.85%, and C/N ratio 21.55%.
Mapping groundwater hardness in wells as a source of drinking water for the people SOLOSSA, HERCE FARIDA; Yulfiah, Yulfiah
Journal of Applied Sciences, Management and Engineering Technology Vol 1, No 2 (2020)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2020.v1i2.919

Abstract

Herce Farida Solossa 20.2018.2.00117 Mapping of Groundwater Hardness Distribution of Drinking Water for Bangkalan District Community, in 2019. Thesis, Department of Environmental Engineering, Faculty of Civil Engineering and Planning, Adhi Tama Institute of Technology Surabaya, Advisor Dr. Yulfiah, ST., Msi.              Water hardness is the content of certain minerals in water, generally calcium (Ca) and magnesium (Mg) ions in the form of carbonate salts and this content if it exceeds quality standards can have an impact on human health. The purpose of this study is to map the distribution of groundwater hardness as a source of water supply in Kab. Bangkalan. The sample of this study is shallow wells with a depth not exceeding 20 m. This type of research is a descriptive study with a qualitative and quantitative approach. The research sample was taken as many as 18 following the number of subdistricts in Kab. Base Samples taken are water source wells used by the community. Sampling time is the dry season. Samples taken are stored in bottles and immediately taken to the laboratory for examination. Sampling locations are made in the form of maps with the ArcGis application. The conclusion of this research is that the level of hardness in groundwater in Kab. Base has moderate value - maximum. The distribution of hard water is also evenly distributed throughout the Kab. Base with the maximum distribution from east-west to east and east-east while the hardening is starting from north and northeast to south, southwest and west. This suggestion that can be made is that residents who use shallow wells should use a filter and cook it first for drinking needs. Keywords: Mapping, hard groundwater, drinking water sourcesKeywords: Mapping, hard groundwater, drinking water sources.
Support Vector Machine optimization with fractional gradient descent for data classification Hapsari, Dian Puspita; Utoyo, Imam; Purnami, Santi Wulan
Journal of Applied Sciences, Management and Engineering Technology Vol 2, No 1 (2021)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2021.v2i1.1467

Abstract

Data classification has several problems one of which is a large amount of data that will reduce computing time. SVM is a reliable linear classifier for linear or non-linear data, for large-scale data, there are computational time constraints. The Fractional gradient descent method is an unconstrained optimization algorithm to train classifiers with support vector machines that have convex problems. Compared to the classic integer-order model, a model built with fractional calculus has a significant advantage to accelerate computing time. In this research, it is to conduct investigate the current state of this new optimization method fractional derivatives that can be implemented in the classifier algorithm. The results of the SVM Classifier with fractional gradient descent optimization, it reaches a convergence point of approximately 50 iterations smaller than SVM-SGD. The process of updating or fixing the model is smaller in fractional because the multiplier value is less than 1 or in the form of fractions. The SVM-Fractional SGD algorithm is proven to be an effective method for rainfall forecast decisions.
Evaluation of PDAM Performance Using Dynamic Models Kristiawan, Helmi; Karnaningroem, Nieke; Kusuma, Maritha Nilam
Journal of Applied Sciences, Management and Engineering Technology Vol 1, No 1 (2020)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2020.v1i1.704

Abstract

the Regional Government is the fulfillment of basic needs of daily drinking water. However, the service by PDAM is still not optimal. It can be seen from the PDAM's performance that was “unhealthy from year to year according to BPPSPAM data. Some of the research methods used in analyzing PDAM performance are problem identification, identification of variables and conceptual models, dynamic model simulations, analysis and interpretation as well as drawing conclusions and suggestions. From the simulation result of dynamic models using Vensim PLE plus software, alternative scenarios were obtained, that will increase domestic water consumption and customer connections by 12.5% per year, increasing the repair and replacement of distribution piping systems and customer meters by 20% per year, and increasing rate to 15% per year.
Study of The Effect of Zeolite Catalyst Use on Renewable Energy Products from HDPE Plastic Pyrolysis Fanani, Nurull; Novianarenti, Eky; Ningsih, Erlinda; Udyani, Kartika; Budianto, Agus; Tuhuloula, Abubakar
Journal of Applied Sciences, Management and Engineering Technology Vol 1, No 2 (2020)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2020.v1i2.1305

Abstract

Nowadays, waste is a serious problem, especially plastic waste, which is quite alarming in the world. Plastic is waste that is difficult to degrade and takes hundreds of years to decompose. One of the promising technologies for recycling plastics is pyrolysis. This is the process of breaking long chains of polymers into hydrocarbons which are carried out at high temperatures. The purpose of this paper was to know the effect of using catalysts and non-catalysts on yield and calorific value. In this study, the pyrolysis process used a natural zeolite catalyst with a temperature of 500ºC. 50 grams of HDPE Plastic feed was put into the reactor for 3 hours. The variations in the addition of Zeolite catalyst were 1.5, 2.5, 3.75 and 5%wt. The results goals that the highest yield was 44.36% and the heating value of 10230.295 cal/g for the addition of 5 grams of catalyst. The addition of a catalyst can increase the conversion of plastic to fuelKeywords: Catalyst, Plastic, HDPE, energy, pyrolysis
Company financial performance improvement through financial literacy and intellectual capital perspective Mollah, Moch. Kalam; Suhartini, Suhartini; Basuki H M, Gatot; Nasrudin Khamimi, Fatkhu; Dwi Wahyu Prabowo, Bangkit
Journal of Applied Sciences, Management and Engineering Technology Vol 2, No 1 (2021)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2021.v2i1.1468

Abstract

CV. Sarindofood is one of the companies engaged in manufacturing snacks, one of which is a type of Tost and Stick products made from raw materials for industrial corn. CV. Sarindofood uses considerable capital resources, so it needs analysis, especially in the financial sector. This study aims to determine the effect of intellectual capital on corporate financial performance, financial literacy as an understanding of finance. The independent variables used in this study are human capital, structural capital, value-added capital employed, intellectual capital (VAIC). In contrast, the dependent variables include the performance of ROA, ROI, and ROE. The data in this study are the company's financial statement data CV. Sarindofood consists of a balance sheet report and cash flow for five years from 2019 to 2018. The method used in this study uses Multiple Linear Regression, VAIC, and partial t-test, and a simultaneous F-test is used as analysis tools to see each variable's effect. The results of this study indicate that Capital Employee partially has a significant impact on financial performance. Human capital partly has a significant and positive impact on financial performance. Structural capital partially has a significant and positive effect on financial performance. Whereas the value of the results simultaneously shows that the influence of Intellectual Capital on ROA has a significant effect of 60%, Intellectual Capital on RO1 has a significant effect of 69%, and Intellectual Capital on ROE has a significant effect of 55%.
Identification of Critical Path Changes and Concurrent Delays Using EDAM Method for Building Project Kamandang, Zetta Rasullia
Journal of Applied Sciences, Management and Engineering Technology Vol 1, No 1 (2020)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2020.v1i1.867

Abstract

Achieving a project whose punctually in completion date and duration is one of the main purposes of the project planning. However, avoiding the issue of the delay is hard to do. Delays itself commonly divided into three types, EN, EC and NE delays that represent the contribution of each project parties. Furthermore, the concurrent delay is at different levels that often use as a tool against each other parties. In term of preventing the time-frame problems, the critical path method (CPM) is widely applied. In the delay analysis technique, the EDAM method employs CPM to identify the critical path changes and the occurred concurrent delays. Implementing a six-floor building as-planned schedule and its delays information as a case study, this research results show that the critical path of the building has changed eight times and the concurrent delay occurred on the first change with six days of delays. By identifying the critical path change, project parties are expected to be able to prevent continuously delays by escalating the work progress. Furthermore, the information about concurrent delays would be essential in avoiding disputes regarding this issue. Project parties would be aware of their contribution to critical path changes by knowing their caused delay in that time period.
ANALYSIS OF CORROSION RATE OF ASTM A 387 GRADE 12 AND A 283 GRADE FOR SULFURIC ACID TANK MATERIAL Meryanalinda, Meryanalinda; Ardian, Dedy Rachman; Shocib, Mochammad; Yasin, Ahmad
Journal of Applied Sciences, Management and Engineering Technology Vol 1, No 2 (2020)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2020.v1i2.1194

Abstract

Corrosion is a process of degradation metal quality which is very detrimental in the industry. Especially in an industries related to utilization of acidic liquids such assulfuric acid, hydrochloric acid, etc. If corrosion rate of carbon steel can be estimated, the prediction of remaining life of carbon steel, and the preventive methods of corrosionwould be more appropriate. This will reduce technical, economic and aesthetic losses. The aims of this study was to determine corrosion rate of carbon steel in sulfuric acid. This study used ASTM A 387 Grade 12 and ASTM A 283 Grade A carbon steel type fortank material, where one material is represented by 5 specimen. The corrosion rate of Specimens were measured by the weight loss method for 31 days. The 5 specimens were divided into 3 regions where specimens no.1 and 2 were immersed in  sulfuric acid , specimens no.3 were in the middle area or zone level (partially immersed), and specimens no.4 and 5 were not immersed in sulfuric acid. The highst corrosion rate occured on specimen No.3 with maximum corrosion rate was 0,097 mm/y for ASTM A 387 Gr 12 and 0,096 mm/y untuk material ASTM A 283 Gr A. The results of corrosion rate on ASTM A 387 Grade 12 material are lower than corrosion rate of ASTM A 283 Grade A material. This is caused by presence of Mo and Cr alloy elements in ASTM A 387 Grade 12.
Large-Scale Agile Frameworks: A Comparative Review Almeida, Fernando; Espinheira, Eduardo
Journal of Applied Sciences, Management and Engineering Technology Vol 2, No 1 (2021)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2021.v2i1.1832

Abstract

This study aims to identify and systematically compare the main large-scale agile frameworks that companies can adopt to manage the work of large-scale and distributed teams. Through this, companies can more consciously perform a better-informed decision on the choice of the framework that best fits the practices and challenges of their organizations. This work employs a qualitative approach supported by an exploratory analysis that identifies and explores the processes of migration to a large-scale agile. In the first phase, fifteen assessment criteria for scaling agile are discussed. In a second phase, these criteria are used to perform a comparative analysis of six large-scale agile frameworks (i.e., DAD, LeSS, Nexus, SAFe, Scrum at Scale, and Spotify). The findings reveal there isn't a dominant large-scale agile framework in all dimensions. However, it is possible to identify frameworks like Nexus and Spotify that target smaller teams and offer low technical complexity. These frameworks easily accommodate changes, while there are other frameworks like SAFe and DAD that offer high levels of scalability but require more demanding and deep efforts in changing work processes in an organization.

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