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2018 Workshop on Multidisciplinary and Its Applications: Applied Mathematics, Computer Science, Information Systems, and Information Technology, WMA-Mathcomtech 2018

作者： Harahap, Astro Julida Ongko, Erianto Manurung, Hotler Kurnia, Dian Hartono, H. Abdullah, Dahlan Erliana, Cut Ita Djanggih, Hardianto Saddhono, Kundharu Rianita, Dian Setiawan, Muhammad Ikhsan Setiawan, Yuliyanto Budi Manurung, Rosida Tiurma Sriadhi, S. Sinurat, Mangasi Siregar, Aisyah Soni Hutauruk, Rapat Piter Sibarani, Nico Benjamain Department of Informatics Akademi Teknologi Industri Immanuel Medan Indonesia Department of Computer Systems Universitas Pancabudi Medan Indonesia Department of Computer Science STMIK IBBI Medan Indonesia Department of Informatics Universitas Malikussaleh Aceh Indonesia Department of Industrial Engineering Universitas Malikussaleh Aceh Indonesia Department of Law Universitas Tompotika Luwuk Banggai Indonesia Graduate Program Universitas Sebelas Maret Surakarta Indonesia Department of Administration University of Lancang Kuning Pekanbaru Indonesia Department of Civil Engineering Narotama University Surabaya Indonesia Study Program of Communication Studies Universitas Semarang Indonesia Graduate Program in Scientific Psychology Universitas Kristen Maranatha Indonesia Department of Electrical Engineering Universitas Negeri Medan Indonesia STIE Bina Karya Tebing Tinggi Indonesia

The learners' needs are an important factor in designing syllabus and materials design, this research deals with the syllabus and material design based on the professional's needs. It is expected that the syllabus and materials designes are communicatively applicable to the professional academy. Descriptive method is applied in this research. The sample of this research is 30 students of ATII Immanuel Academy Medan. They were selected by random sampling to get the data, the questioners were administered to students. the questioners consisted of 54 items and the semi structured interview consisted of 5 questions, the finding indicated that learners' needs were focused on reading and speaking skills. With reference appropriately and proportionally derived for students of the Professional Academy. Further on the basis of the syllabus, materials are designed in which the skills of using language become a priority. The results of this research will be disseminated using the website. © Published under licence by IOP Publishing Ltd.

关键词： Information systems

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Mathematical Model of Traffic Speed and Capacity in the Archipelago Base

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IOP Conference Series: Materials Science and engineering 2021年第1期1125卷

作者： A. Gaus T. Y. S. Muhammad U. S. H. Ambo N. Liska Civil Engineering Study Program Faculty of Engineering Universitas Khairun

The transportation engineering developing who the application of the principal use planning, analysis and design to the disciplines comprising transportation: its vehicles, physical infrastructure, safety in travel, environment impacts and energy usage. The mathematical model in base archipelago was not much enough to research by transportation practiced. It had been of characteristic which different mainland. This paper using greenshields and greenberg models for approach real condition of the base archipelago. In the transportation involves working with the businessman, with industry, with citizen group, with elected officials, and with employes to the joint each segment of the public strip depended on at least one constructed facility. In this time there three components that included the discussion of the traffic of a microscop scale were flow, density and speed. At the greenshields model, the speed-density relationship show whose the value of speed higher than value of density lower with determination value 0,9755 where the curve of flow-density relationship show the value determination 0,8634 and for curva of flow-speed relationship showing whose maximum value of flow 1807 vehicles/hour at the value traffic speed 46 km/hour, traffic speed which at the lower or it the higher, so it condition given impact that the value of flow will going to low. on the other hand for greenberg model at speed-density relationship's determination 0,9463, density-flow relationship show that the value minimum of density is 25 vehicles/km while value of flow is 1400 vehicles/hour and the relationship between flow-speed curve show that value maximum flow 1750 vehicles/hour with value speed 37. Base the value of each condition, so the greenshields model was better than greenberg model for this research. The mathematical model of the traffic flow which approach the real condition for the base archipelago was greenshields model.

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Analysis of productivity and the need for heavy equipment on grade B aggregate foundation layers work (case study: Pekan Gedang road section, Batang Asai – Muaro Talang District, Sarolangun)

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IOP Conference Series: Materials Science and engineering 2020年第1期807卷

作者： Annisaa Dwiretnani Henriadi Lecturer at the Study Program of Civil Engineering University Batanghari Jambi Indonesia Student at the Study Program of Civil Engineering University Batanghari Jambi Indonesia

Grade B aggregate foundation layers are part of the road foundation that is located between subgrade and grade A foundation layers. The function of grade B aggregate foundation layers is to minimize the spread of loads to the subgrade. Road infrastructure is one of the factors that support an area development. Road improvements aimed to improve the social economy and open access to isolated areas of considerable potential for the development of natural resources. This research analyses productivity and the need for 5 types of heavy equipment on grade B aggregate foundation layers work (case study: Pekan Gedang road section, Batang Asai – Muaro Talang District, Sarolangun). Noted that heavy equipment specifications were used in project site same as the planned. The results showed that based on time schedule and project volume in this research can be completed properly and on time if using 5 units of dump trucks and 1 unit each for wheel loader, vibratory roller, motor grader and water tank truck, with productivity for wheel loader is 125.42 m3, dump truck is 2.69 m3, vibratory roller is 87.15 m3, motor grader is 57.24 m3 and water tank truck is 71.14 m3.

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The effect of sea water soak on asphalt porous characteristics with and without waste of rubber tire waste as an asphalt addictive

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IOP Conference Series: Materials Science and engineering 2019年第1期669卷

作者： O S T Mawarni M Fauziah Civil Engineering Study Program Faculty of Civil Engineering and Planning Universitas Islam Indonesia

The use of rubber tire scraded in the developement of porous asphalt technology as a part of flexible pavement aims to minimize the adverse effects of transportation facilities. The use of rubber tire scraded as an asphalt modifier in the pavement can provide several benefits, including reducing reflective cracking on overlays, reducing maintenance cost, increaseing resistance to new pavement cracking and rutting, increasing skid resistance an pavement age. This paper presents laboratory investigation on the effect of seawater immersion on porous asphalt performance using rubber tire scraded. Method use in laboratory investigation is based on AAPA 2004 and Bina Marga 2010. The results showed the permeability all types of mixture indicator 'moderate drainage'. The results of testing the Marshall characteristics showed a decrease in the value of stability, flow, and MQ in the porous asphalt mixture with Pen 60/70 asphalt and rubber asphalt as the duration of sea water immersion increased. The porous asphalt mixture using Pen 60/70 asphalt and rubber asphalt has Index of Retained Strength values which tend to decrease with increasing sea water immersion duration. Indirect Tensile Stength test results due to seawater submersion indicate a decrease in ITS value in porous asphalt mixtures with Pen 60/70 asphalt and rubber asphalt. The Cantabro test results showed an increase along with the increasing duration of seawater immersion.

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Mode choice analysis of passenger transport at train station using stated preference method

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AIP Conference Proceedings 2024年第1期2838卷

作者： Nurul Hidayati Nadiah Mufidah Sri Sunarjono Munajat Tri Nugroho Helmi Dhia Al Ghalib Civil Engineering Master Study Program Universitas Muhammadiyah Surakarta Surakarta Indonesia Civil Engineering Study Program Universitas Muhammadiyah Surakarta Surakarta Indonesia

Tourists at Solo Balapan Station have several options for continuing their journey, including private, semi-private, and public vehicles. Despite the fact that Batik Solo Trans (BST) Corridor II is one of the modes of public transportation available at this location, it is still infrequently used. The goal of this research is to identify the factors that influence mode selection and to develop a model. This study employs statistical analysis to investigate passengers’ socioeconomic and travel characteristics, as well as methods for expressing preferences regarding ticket attributes, headway, and service level. Questionnaires were distributed at nearby stations and bus stops to collect data from 240 respondents. The binomial logit model was used to analyze the mode selection model. According to the stated preference method, respondents believe that the IDR 3500 fare, 10 minutes of headway, and Wi-Fi will persuade passengers to choose BST. Private-Online, Private-BST, and Online-BST are other binary logit models. If the costs of private vehicles and online transportation are the same, 52% of respondents will choose private vehicles, according to the results of the binary-difference logit modeling. Similarly, if the costs of BST and private vehicles are comparable, 70% of respondents will choose private vehicles. If the BST and online transportation costs are the same, however, 38 percent will choose online transportation. The logit-ratio modeling results also show the previously mentioned conditions. If the cost ratio is one, the three alternatives listed above are obtained in the following order: 52% prefer private vehicles in Alternative 1, 63% prefer BST in Alternative 2, and the same percentage prefer online transportation in Alternative 3. The results of preference analysis show that if the value of the BST attribute is changed, the percentage of passengers who choose BST increases.

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Flood handling with priority scale determination in Samarinda Seberang from East Kalimantan Province Indonesia

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IOP Conference Series: Materials Science and engineering 2020年第1期885卷

作者： SSN. Banjarsanti P. Kukuh Theta Margaritifera Civil Engineering Study Program Samarinda State Polytechnic Civil Engineering Post-graduate Program Gunadarma University Depok

Handling of flooding caused by changes in land use often causes changes and problems in the magnitude of runoff coefficient, discharge, water level, and drainage channel dimensions, as happened in Samarinda Seberang. The purpose of this study was to plan a drainage channel according to the priority scale using the Rational Modification Method as a Hydrological Analysis and Manning as a Hydraulics Analysis. Handling method is carried out in the form of structuring and planning the drainage system according to priority scale based on inundation parameters, economic studies, social and transportation disturbances, loss of housing areas, and property rights. The higher the criteria for handling the area is a priority. The results showed that the highest priority scale (610) was obtained on Cipto Mangunkusumo street, and the lowest priority scale (220) was at Bung Tomo street and Hasanuddin street. Cipto Mangunkusumo street as the highest priority scale will be planned for the first priority drainage channel with a design flood discharge in the 10 year return period (Q) 7.79 m3 / sec, the drainage channel dimension consists of the basic width of the channel (b) 0.77 m ∼ 0.80 m, channel peak width (T) 3.30 m, channel depth (h) 1.925 m, watch height (f) 0.6 m, total depth 2.52 m, and slope of channel wall (m) 1: 1).

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A model for building and sustaining communities of engineering education research scholars

A model for building and sustaining communities of engineeri...

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113th Annual ASEE Conference and Exposition, 2006

作者： Adams, Robin Allendoerfer, Cheryl Bell, Philip Chen, Helen Fleming, Lorraine Leifer, Larry Maring, Bayta Williams, Dawn Purdue University United States Department of Engineering Education Purdue University United States University of Washington United States Center for the Advancement of Engineering Education University of Washington United States Cognitive Studies in Education University of Washington United States Stanford University United States United States Center for the Advancement Engineering Education Academic Pathways Study Research Team Howard University United States Department of Civil Engineering Howard University United States National Science Foundation HBCU Undergraduate Program United States Department of Mechanical Engineering Design Stanford Center for Design Research United States United States United States Center for the Advancement of Engineering Education Department of Educational Administration and Policy Howard University United States Institute for Scholarship on Engineering Education

Building and sustaining communities of new engineering education researchers is crucial for bringing people into an area of scholarship, supporting them working in this area, providing opportunities for long term professional development within a community of practice, and building capacity in the engineering education research infrastructure. The Institute for Scholarship on engineering Education (ISEE), an element of the NSF-funded Center for the Advancement of engineering Education (CAEE), is designed to build and sustain communities of engineering education scholars who can investigate student learning issues and transform findings into actionable improvements. The Institute has a revolving host structure across three schools - University of Washington, Stanford University, and Howard University. Over three consecutive year-long cycles, ISEE builds and extends a cohort of scholars at host and partner schools. In this paper we explore the question "how do we build capacity in engineering education research?" We pursue this question by examining the ISEE model, the successes and challenges experienced as we near completion of the second of three cycles, and implications for future community building efforts. © American Society for engineering Education, 2006.

关键词： engineering research

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Time series modeling by using exponential smoothing technique for river flow discharge forecasting (case study: Cabenge, Walanae, and Cenranae rivers system)

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IOP Conference Series: Materials Science and engineering 2021年第1期1088卷

作者： Melly Lukman Benyamin Tanan Civil Engineering Study Program Paulus Christian University of Indonesia

The exponential smoothing technique is a time series modelling technique that can be used for forecasting. This technique is very important for use in hydrology to determine trends and predict future river flow conditions. In this study, 4 Exponential Smoothing Techniques were analyzed, namely Single Exponential Smoothing, Double Exponential Smoothing, Double Exponential Smoothing (Winters), and ARIMA to predict the flow of the Cabenge river on SWS Walanae - Cenranae. From the results of the study of the four Exponential Smoothing Techniques, Triple Exponential Smoothing (Winters) Of the 4 ES Techniques analyzed in this study, Triple Exponential Smoothing (TES) provides a more accurate forecasting value than Single Exponential Smoothing (SES), Exponential Smoothing Dual Smoothing (DES), and the Autoregressive Difference Moving Average (ARIMA). Triple Exponential Smoothing (TES) has smaller error values for MAPE, MAD, and MSD than SES and DES, and the comparison of forecasting discharge with measured discharge values shows a KN value of 93%. To predict the flow of the Cabenge river in SWS Walanae - Cenranae it is recommended to use the Triple Exponential Smoothing (Winters) Technique.

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Durability of Reactive Powder Concrete

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IOP Conference Series: Materials Science and engineering 2019年第1期650卷

作者： Widodo Kushartomo Octavivia Civil Engineering Undergraduate Study Program Universitas Tarumanagara Indonesia

Concrete is a generally used material in building construction. The construction will be built on the ground and could also be in places exposed to sea water. Sulfate contained in ground water and sea water could cause sulfate aggression to concrete itself. Therefore, the research used Reactive Powder Concrete which is one of the concretes that is currently popular and has a high durability. The research was done by doing a constant repetition of saturated sulfate submersion and specimen abstersion. The varieties of specimen used along with the research such as Type I, Type II, and PCC variations of cements, also varieties fas 0.2 and fas 0.25. Research shown that Reactive Powder Concrete which is contained type II cement has the best resistance because the compressive strength does not reduced to 30% and the reduced weight is less than 1% when exposed to high concentration of sulfate.

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Optimum compressive strength of geopolymer concrete in variations comparison of ingredients and mixing time

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Journal of Physics: Conference Series 2021年第1期1858卷

作者： Suhendro Trinugroho Rina Septia Ningrum Civil Engineering Study Program Muhammadiyah Surakarta University Indonesian

Concrete has been criticized more recently because of the greenhouse gas (carbon dioxide) emissions it produces in the cement portland production process. With these considerations, a new concrete binder called geopolymer concrete was developed. One of the materials used in the manufacture of geopolymer concrete is fly ash. Using fly ash as a substitute for cement is considered to be able to preserve the environment and reduce development costs. In this study, the specimen used was cylindrical, with a diameter of 15 cm and a height of 30 cm. The concrete compressive strength test was carried out at the age of 28 days. Variations in concrete testing include: Test the strength of the concrete on the variation of the binder ratio: coarse aggregate of 20%:80%, 25%:75%, 30%:70%, 35%:75% 40%:60% and the variation of stirring time 5 minutes, 7.5 minutes, 10 minutes, 15 minutes. From the test results, it can be concluded that the optimum mixing time for the concrete mix is 7.5 minutes. If it is less than 7.5 minutes it will result in less than maximum binder binding power. And if the mixing time is more than 7.5 minutes it will decrease the adhesion of the binder. Regarding the variation of concrete on the amount of use of fly ash, it can be concluded that the higher the fly ash content, there is a tendency for low compressive strength, this is due to the influence of the water content used in the mixture is obtained based on the weight of fly ash in each variation. So if the weight of fly ash is higher, the water demand will also be higher and it will result in too dilute fresh concrete, so that the compressive strength of the concrete decreases.

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