cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota surabaya,
Jawa timur
INDONESIA
IPTEK Journal of Proceedings Series
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 23546026     EISSN : -     DOI : -
Core Subject : Science,
Computer Science & IT
IPTEK Journal of Proceedings Series publishes is a journal that contains research work presented in conferences organized by Institut Teknologi Sepuluh Nopember. ISSN: 2354-6026. The First publication in 2013 year from all of full paper in International Conference on Aplied Technology, Science, and Art (APTECS). It publish one time a year after the held of APTECS event.
Arjuna Subject : -
Articles 1,079 Documents
 88   89   90   91   92 
Princing on Dual Channel Supply Chain by Considering Flash Sale Program on Online Channel (Case Study: A3 Printing) Achmad Amir; Suparno Suparno
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.11088

Abstract

Dual channel supply chain is a combination of offline channel and online channel are running simultaneously as a new structure. Through online channels, consumers can find the best product prices. This is used by companies to implementing promotional prices to attract the attention of online consumers, one of them is by the flash sale program. Promotion aims to stimulate demand for a company’s product but along with the increase in demand is not always accompanied by an increase in profit. So it is necessary to consider the selling price of the product during the promotion and how long the promotion will be applied. This research is focused on determining the selling price of products and duration of the promotion as well as the impact using the help of Malpe software and Microsoft Excel. This study concluded that the lower price and the longer duration applied during the flash sale leads on the higher demand but will result in a decrease in profits. So that promotional strategies using the flash sale program can be applied if the company's main goal is only to increase the number of sales.
Cellulase, Pectinase, and Xylanase Production by Listeria sp. ISH 16 using Coffee Pulp Waste Medium Ummi Wasilah; Kahar Muzakhar; Purwatiningsih Purwatiningsih
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.11122

Abstract

In this study, microbial utilization of coffee pulp waste to produce three carbohydrases (cellulase, pectinase, and xylanase) has been investigated. An isolate Listeria sp. ISH-16 which grown in liquid medium containing 0.5% coffee pulp alkali extract can grow well with density of reach 107 x 58.5 cell/mL. Further, the culture can optimum produced of pectinase after 72 hours incubation at 37oC, but for cellulase and xylanase longer 84 hours incubation needed. The harvested of crude pectinase, cellulase and xylanase had activity 0.15, 0.23, and 0.61 unit/ ml after dialysis, respectively. All enzymes stable at a range of pH 4-5.5, but they work optimum at different pH. Of each enzyme pectinase, cellulase, and xylanase work optimum at pH 5, 4.5, and 5.5. based on these results, it may be adopted as a strategy to produce enzymes with low cost so that further investigation such as large scale and purification enzyme is needed.
The Impact of Urban Configuration to the Urban Heat Island in East Surabaya Rivan Aji Wahyu Dyan Syafitri; Adjie Pamungkas; Eko Budi Santoso
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.11145

Abstract

Climate change that occurs due to urbanization has implications for increased intraurban heating, or usually called urban heat island (UHI). East Surabaya has the most potential to experience increased surface temperature. The urban area has different configuration characteristics and became the most fundamental impact of the phenomenon. However, East Surabaya in climate resilience response has not emphasized adaptation based on urban configuration spatially. While changing the shape of the urban that has been built is most difficult to restore and requires expensive costs. The purpose of this study is to find what’s characteristics urban configuration caused UHI significantly. So, it can be a reference to an adaptation to minimize UHI intensity from the best type of urban configuration. This study uses a positivist paradigm. Remote sensing using LiDAR and Landsat imagery became the main source of this research. With geographic information system (GIS), UHI in the urban and suburban areas of East Surabaya has a temperature difference of around 1,590C. Characteristics of urban configuration are in classifications 2 to 7. Classification 2 is the central area of activity, while classification 7 is a sub-urban area. Urban Configuration have an impact to the UHI intensity. Classification 3 has the biggest effect on UHI.
A Transit-Oriented Development Concept Model to Reduce Traffic Congestion in Urban Area Muhammad Andika Satrugna Mahardhika; Erma Suryani; Alifiansyah Arrizqi Hidayat
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.9187

Abstract

Traffic congestion have caused many impacts and losses both in terms of transportation, but also in terms of environmental, economic and social aspects. The increasing number of private vehicles and the decline in public interest in using public transportation is one of the main factors. The decline in public interest in using public transportation is influenced by several reasons, such as ease of access, lack of modes of transportation available, the duration of waiting time, and the duration of travel time. The TOD concept is used because it is a combination of urban planning development and transportation system design, which can help to solve transportation problems especially in urban areas. This study aims to identify and examine how TOD can increase the use of transit modes and transportation efficiency. This study used the System Dynamics model as a means of conceptual modeling (Causal Loop Diagrams) which will describe in detail the factors that will encourage the use of transit modes and improve the efficiency of the transportation system. The results of this study are expected to help provide an overview for policy makers or related parties in determining future directions and strategies related to the existing urban transportation system.
Nurse Scheduling Optimation with Various Assignment Pattern at ABC Hospital Using Goal Programming Method Sigit Ananda Murwato; Abdullah Shahab
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11228

Abstract

In fulfilling health services in hospitals, the availability of human resources (HR) which includes doctors, nurses, midwives, and so on, plays a very important role. In terms of amount and dominant existence in the hospital in providing health services to patients is a nurse. The role of hospital management in maintaining the availability of nurses is to plan a good schedule. Without a good resource scheduling plan, the services will not be optimal and the costs will hard to control. This research aims to optimize the nurse scheduling. Existing schedule did not pay attention to specific time that have different load to another. Management feels that a lot of idle time is experienced by some nurses. Therefore, from the data that occurred in the past there will be observations that every 4 hours will occur how many services performed and how many nurses needed. Furthermore, by using Goal Programming method, several priority objectives are made, such as how to minimize the deviation of nurses needed in one shift or slot. Then how to minimize the excess target number of nurses who work in one week. And then minimize the excess number of nurses who work on the night shift. The suggested mathematical model has been implemented using Lingo Software. Work patterns have been suggested to improve schedules quality based on different load of services that occur in specific time. The suggested approach can be used for any similar staff scheduling problem in the next research.
Waste Reduction in Electrical Production Process in PT Petrokimia Gresik Coal Utility Using Value Stream Mapping and FMEA Applications Rosyid Ridlo; Mokh. Suef
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11075

Abstract

Unit Utilitas Batu Bara (UBB) is one of the power plants owned by PT Petrokimia Gresik which began operating in 2010. UBB consists of a steam boiler with a capacity of 2x150 tons per hour and a power plant with a capacity of 25 megawatt. There is waste in the electricity production process at UBB which is indicated by the value of actual efficiency is low compared to the value of efficiency in the design and performance test. This research discusses efforts to reduce waste in the process of steam and electricity production in UBB by making value stream mapping, identifying waste, conducting root cause analysis, and making FMEA. Through data collection and processing, interviews with expert employees at UBB, as well as comparing reference activities and actual activities, obtained that waste occurs in coal out from coal mill, boiler water, and boiler efficiency. Through analysis 5 whys, obtained fifteen root causes of waste. Through the calculation of events, severity, and detection the risk priority number is obtained. Based on the existing critical risks, through the collection of FMEA worksheets, an estimate of actions to reduce waste that occurred at UBB was obtained. The results showed that all total waste obtained was Rp. 126,364,598.13 / day in UBB. By asking for alternative improvements, a potential savings value of Rp.74,436,596 / day is obtained.
Application of Value Stream Mapping on Operating Project Business Process at Nickel Mining Industry Aristo Andryanto; Iwan Vanany
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.11113

Abstract

This study investigated the usage of manhours against project cost impact in the business process of capital and operating project in mining industry. The case study in this study is nickel mining company in Indonesia. The waste identification and elimination are used on the business process operations and capital project delivery system using lean thinking in project management and Analytical Hierarchy Process (AHP). The study results shows that in current business process state, 95% project expenditure in case study on 2019 was spent for capital project and 5% for project operations. This results of this study is quite different with the manhours spent each on operating and capital project. In 2019, both the Capital Project Management and Engineering Services department spent 70% of their manhours on Capital Project and 30% on Operating Project. It shows that in managing 5% of their project budget, the company’s case study had to spent 30% of their project team manhours. With the proposed business process, the company’s case study should be able to optimize their manhours usage proportionally to the project cost impact.
Education and Training Center for Youth with Multisensory Design Approach Ghazali, Achmad Ramzy Arighi; Ekasiwi, Sri Nastiti Nugrahani; Noerwasito, Vincentius Totok
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020) - IN-PRESS
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.11136

Abstract

Lack of education and training facilities for youth people who are in accordance with the visual learner's learning system makes one aspect of the lack of interest of youth in developing and increasing their productivity. Therefore, this research is conducted to provide an architectural concept that can adapt to the visual learner's learning system for youth. The design concept of the design uses a multisensory theory approach to create attention, sensation and memory into the visual learner learning system for youth. In addition, the direct analogy approach to visual functions becomes one of the design strategies to give attention especially youth in better understanding the stages to be carried out, namely the professionalism stage. Architectural factors that influence the productivity of youth are the shape, scale, color, and materials used in rooms and buildings. This was obtained by means of observation and participatory questionnaires with youth of productive age. Besides the professionalism factors that can assess the productivity of youth are knowledge, skills, and attitude. This was obtained by the questionnaire method with the HRD manager. The method used in the idea uses the concept base framework design method. To present a moment in the design framework, it is necessary to have a research method in it, namely participatory qualitative methods, literature observation and environmental mapping on selected land. The moment presented will limit the exploration of elements that have a role in increasing visual perception in youth’s productivity. Moment will evaluate architectural factors that can be adapted to existing environmental conditions, so as to create the perfect concept in increasing the productivity of youth.
Identifying the Influential Factors in the Change of Residential to Commercial Areas: a Case Study in Rungkut Madya, Surabaya Bachtiar, Raditio; Soemardiono, Bambang; Septanti, Dewi
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.8941

Abstract

The development of road transport that increased on Jalan Rungkut madya in a few years has made A positive impact on an area in terms of the economy. However, the negative impact of that development is to make the changing function of land use to be a commercial area that disrupt the function. The changes in the area function unconsciously impact the changes in the city's design elements on which influences the quality of a design of the city. To find out what factors that affect the change of a function area is indispensable in becoming a reference in designing a good commercial area. The paradigm in this study uses the post-positivist paradigm, where this paradigm is a qualitative method that uses a scientific approach, the strategy used is combined strategy between quantitative and case studies. The primary Data used in this study came from observations and questionnaires. The results in this study included identifying influential factors in the change of residential functions into commercial areas.
Inventory Planning for XYZ Mart using EOQ and Monte Carlo Fadhil, Muhammad; Suryani, Erma
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11216

Abstract

XYZ Mart is a convenience store in Tulungagung regency. Founded in 2012, this store is designed to serve the daily needs of surrounding residents. In addition, this store also caters for the needs of families visiting patients at the hospital in front of XYZ Mart. Along with the store growth, there are more and more customers, and so the more demand. To handle the increasing demand, the store has to increase its inventory of goods. Problems arise when the number of goods keep increasing while the store inventory space does not. Therefore, in order to avoid overstocking or understocking, a research and planning are conducted to determine the optimal number of an order. The method used for inventory optimization is Economic Order Quantity (EOQ) to calculate the most optimal number of goods ordered. To anticipate the uncertainty of demand, Safety Stock (SS) is also used. To determine the average demand per year based on historical data, as a basis for EOQ and SS calculations, a Monte Carlo simulation is used. The expected outcome of this research is to provide recommendations of when and how much goods must be ordered so that the store can optimally use its limited space of inventory.

Page 90 of 108 | Total Record : 1079

 88   89   90   91   92 

Filter by Year

2014 2023


Reset
Filter By Issues
All Issue No 1 (2023): The 1st International Conference on Community Services and Public Policy (ICCSP) 2022 No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020) - IN-PRESS No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020) No 7 (2020): The 2nd International Conference on Global Development (ICODEV) 2020 No 5 (2020): The 8th International Conference on Transportation & Logistics (T-LOG 2020) No 4 (2020): 2nd Maritime Safety International Conference (MASTIC) 2020 No 2 (2020): IConISE & ACISE 2020 No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2 No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM) No 1 (2019): 4th International Seminar on Science and Technology 2018 (ISST 2018) No 2 (2019): The 3rd Geomatics International Conference (GEOICON) 2018 No 4 (2019): Seminar Nasional Kimia (SENAKI) XV 2019 No 6 (2019): The 1st International Conference on Global Development (ICODEV) No 5 (2019): The 1st International Conference on Business and Management of Technology (IConBMT) No 3 (2019): International Conference on Engineering Technology Advance Science and Industrial Appli No 5 (2018): Seminar Nasional Teknologi dan Perubahan (SEMATEKSOS) 3 2018 No 2 (2018): The 2nd Conference on Innovation and Industrial Applications (CINIA 2016) No 1 (2018): 3rd International Seminar on Science and Technology (ISST) 2017 No 6 (2018): International Conference on Advanced Engineering and Technology (ICATECH) 2018 No 3 (2018): International Conference on Industrial and System Engineering (IConISE) 2017 No 4 (2018): The 3rd International Conference On Materials and Metallurgical Engineering and Technol No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017 No 4 (2017): 2nd International Seminar on Chemistry 2016 No 3 (2017): 8th International Conference on Architecture Research and Design 2016 No 2 (2017): The 2nd Internasional Seminar on Science and Technology (ISST) 2016 No 1 (2017): The 2nd International Conference on Civil Engineering Research (ICCER) 2016 No 5 (2017): Simposium I Jaringan Perguruan Tinggi untuk Pembangunan Infrastruktur Indonesia (2016) No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015 Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013 More Issue