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 The Journal for Technology and Science
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 08534098     EISSN : 20882033     DOI : -
Core Subject : Science,
Computer Science & IT
IPTEK The Journal for Technology and Science (eISSN: 2088-2033; Print ISSN:0853-4098), is an academic journal on the issued related to natural science and technology. The journal initially published four issues every year, i.e. February, May, August, and November. From 2014, IPTEK the Journal for Technology and Science publish three times a year, they are in April, August and December in online version.
Arjuna Subject : -
Articles 345 Documents
 8   9   10   11   12 
The Needs for Septage Treatment Plant in The Urban Areas of Blitar Regency: A Research Study Pratiwi, Yeni; Purwanti, Ipung Fitri; Hermana, Joni
IPTEK The Journal for Technology and Science Vol 31, No 2 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v31i2.5642

Abstract

Blitar is one of the regencies in Indonesia that doesn’t have Septage Treatment Plant (STP). The high coverage of on-site wastewater system access as well as routine desludging needs in the Decentralized Wastewater Treatment Plant (DWWTP) requires further septage process of septage in the form of STP. However, almost 90% of STP in Indonesia was not working correctly due to poor effluent quality and inadequate operational and maintenance costs. This study referred to the current conditions of domestic wastewater management obtained from interviews and questionnaires to identify the real needs of establishing STP efficiently and sustainably. Furthermore, this paper contained the analysis of STP capacity, site selection, sludge treatment units, land requirements, capital costs, operational and maintenance costs. By considering the existing desludging activity, the capacity of STP in 2019 was 20.95 m3/day. Meanwhile, the capacity of STP at the end of the 20-year design period was 41.36 m3/day. Although site selection analysis was obtained three locations for STP, the selected location of STP was the one which was centrally located in one location, namely Sutojayan Sub-District. One location of STP was considered to be more efficient from land needs, capital cost, operational and maintenance costs. The total land requirement of the STP was 2,196.49 m2. The capital cost amounted to IDR 15,562,028,000. The operational and maintenance costs were IDR 319,715/day, while the underlying service tariff charged to the community was IDR 188,000/septic tank.
Acceptance Analysis of The East Java Province E-Procurement System Using TAM Method Mas Odi; Erma Suryani
IPTEK The Journal for Technology and Science Vol 31, No 2 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v31i2.5641

Abstract

Technological developments have changed the system of the government. The EastJava Provincial Government utilizes Information and Communication Technologyfor the procurement of goods and services. This study aims to measure the level ofacceptance of technology in the system and the satisfaction of applications for thegoods and services procurement in East Java Province. The results of this study canbe used to improve the system that has been made. This study uses the TechnologyAcceptance Model (TAM) method in measuring using (5) aspects, namely Perceptionof Ease of Use, Benefits of Use, Attitudes toward behavior, Interest in Behavior, andBehavior. This study used 90 respondents. The results showed that from the regres-sion test on the variable Perception of Ease of Use with Benefits of Use of 13.5%,Perception of Ease of Use with Attitudes Against Behavior amounted to 38.7%. Ben-efits of Using Attitudes Against Behavior was 23.9%, Benefits of Use with InterestBehavior amounted to 11.5%, Attitudes toward Behavior were Large with Interest inBehavior at 22.2%. Benefits of Use with Behavior amounted to 10.1%, and Interestsin Behavior with Behavior were 13.2%. The study results show that the user’s easeand attitude have the highest value and interest in behavior. Therefore the East Javaprovincial government can maintain the procurement application.
Determinants of Behavior Intention and Use Behavior among Bukalapak’s Consumers Giandi, Oxsy; Irawan, Isa; Ambarwati, Rita
IPTEK The Journal for Technology and Science Vol 31, No 2 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v31i2.5585

Abstract

The development of communication and information technology has touched the marketing and sales industry. In recent years, there have been many market places in Indonesia, where people buy and sell without meeting face to face. This study investigates the influence of people's intention on the use of behavior to buy at the market place in Indonesia. The market, which becomes the research object is Bukapalak. The data were obtained using the questionnaire. This study obtained 210 respondents, and the data were processed by the method of partial least square. There is a positive and significant influence of behavioral intention from Bukalapak’s consumer on the use (usage) behavior. The dominant determinant indicator in this study is the degree of the purpose of using the market place.
Measure The Significance of Learning Value and Trust Factors for Online Learning Technology Acceptance in Indonesia Yuda Dian Harja; Mohammad Isa Irawan; Rita Ambarwati
IPTEK The Journal for Technology and Science Vol 31, No 2 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v31i2.5583

Abstract

One of the main stages to achieve the success of online learning technology is the acceptance of the technology by its users. Therefore, identifying how significant the influence of a factor in the success of technology acceptance is very important. This study aims to measure the significance of learning value and trust factors on the acceptance model of online learning technology. To test the research hypothesis used the Partial Least Square Structural Equation Modeling (PLS-SEM) method. This research is a quantitative study with a survey approach to respondents, where respondents must have used online learning technology. The result of the study shows the influence of learning value and trust factors on the acceptance of online learning technology is significant. The results of the study can be taken into consideration for providers of online learning technology in Indonesia as a reference in making strategic decisions for further development.
Review on Design Strategies of Energy Saving Office Building with Evaporative Cooling in Tropical Region Rizvanda Ryan Savero; I Gusti Ngurah Antaryama; Bambang Soemardiono
IPTEK The Journal for Technology and Science Vol 31, No 2 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v31i2.5607

Abstract

This research reviews the theories and design of energy-saving office buildings that apply evaporative cooling concepts to inhibit solar heat and improve natural cooling. The limited land in urban areas forces the building orientation facing East-West to increase building heat gain in tropical regions. This research is interesting because evaporative cooling is rarely found in office building design, especially in tropical areas. The method used is literature searching (theory, journal, and president) related to the energy-saving building (passive design) and passive cooling with evaporative cooling techniques. A review of design strategies can be used as a reference for general criteria applied at the design stage of office building architectural design. As a limitation, questions are needed to find related theories such as (1) what are the factors of building heat control and the criteria required in designing energy-saving office building (2) how to apply evaporative cooling techniques to design the energysaving office building. Solar heat is a key factor in building heat gain. So it must be noticed to control building heat to protect heat transfer into buildings. The results of the design energy saving office buildings in the tropical region have required the application of passive designs such as building orientation, building core placement, shading elements, cross ventilation, natural lighting, producing shape, and application of evaporative cooling with consideration of wind direction and hottest side due to solar radiation
Leachate Production Analysis and Arrangement of Gas Vent Pipelines in Ex-Landfill Sarbagita Regional Landfill Gayatri, Putu Ari; Pandebesie, Ellina
IPTEK The Journal for Technology and Science Vol 31, No 2 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v31i2.5643

Abstract

Sarbagita Regional Landfill is a regional landfill which is located in Denpasar. At this time, there were closure and landfill arrangement in Sarbagita Regional Landfill. The utilization of ex-landfill land used as green open space requires leachate and gas handling due to the process of waste decomposition is still ongoing. Analysis of gas and leachate potential is needed for further management so that the surrounding environment is not polluted. Analysis of potential gas generation using a triangular method and analysis of leachate generation potential using the Thornwaite method. The maximum gas production occurs in 2023 at 43.367.678,25 m3/year. Gas production gradually declined until it’s estimated to run out in 2034. The number of gas pipe points needed is 19 points. Treatment methods that can be considered are the gas conversion to electricity method and the flaring method. The results of the calculation from leachate potential is 3.84 liters/second. The result will be used to planning a leachate processing installation. Processing system through 4 processing stages, namely processing in anaerobic ponds, facultative ponds, aerobic ponds, and biofilter ponds. Besides considering the technical aspects of technology selection, we also considered the Regional Government’s capability and commitment as the manager.
Aeration - Advanced Filtration (AAF) Treatment for Reducing Iron and Chloride in Natural Groundwater Nur Aini Febriyana; Ali Masduqi
IPTEK The Journal for Technology and Science Vol 31, No 2 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v31i2.5581

Abstract

The production of drinking water for the needs of rural communities generally stilldepend on natural water sources. Communities in rural areas usually use groundwaterfor their daily needs. The water supply in Sampang Regency, East Java Provincehas groundwater problem, i.e. the amount of iron and chloride in the water supplyexceed the maximum amount allowed by PERMENKES No. 492/2010. Therefore,this study proposes a method for drinking water treatment using diffused aeration,as pretreatment, and followed by filtration processing. This pretreatment is meantfor reducing iron. The filtration process is carried out in stages with an advancedfilter of low continuous discharge. The filter media uses resin activated carbon andmicrofiltration to remove suspended and dissolved ions. The results of aeration andfiltration processing (AAF) shows that the preprocessed water have Cl-removal of98.39%, TDS-removal of 97.394%, and iron-removal of 97.41%
Opinion Analysis of Traveler Based on Tourism Site Review Using Sentiment Analysis Amira, Siti Azza; Irawan, M. Isa
IPTEK The Journal for Technology and Science Vol 31, No 2 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v31i2.6338

Abstract

Technology development nowadays makes it easier for people to access information. One of them is to find information regarding a place. Many prospective visitors would read reviews from people who have visited a place to find out how they rate a place. Opinion on other people’s reviews is very influential in influencing others’ decisions in assessing a place they want to visit. Opinion analysis can be done by conducting a sentiment analysis of hotel customer reviews. The data used are traveler reviews of hotels in East Java on the Tripadvisor site. Traveler reviews data was taken by crawling on tourist sites, and the unstructured reviews data would be a preprocessing and weighted term from reviews using the TF-IDF method. The classification process is done using the support vector machine method to find opinions from traveler reviews, which are positive or negative. Based on the classification results, hotels that have the most positive sentiments in Surabaya are Harris Hotel Gubeng and Pop! Hotel Gubeng with the same number of reviews, 252 reviews. In comparison, hotels with the most positive sentiment in Malang are Harris Hotel Malang with 311 reviews. The opinion analysis results are expected to help the hotel manager evaluate and develop to increase the number of tourist visits.
Bioactive Compounds and Antioxidant Evaluation of Methanolic Extract of Hibiscus Sabdariffa Adusei, Stephen
IPTEK The Journal for Technology and Science Vol 31, No 2 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v31i2.6572

Abstract

Hibiscus Sabdariffa (Roselle) is renowned for its delicacy and healing properties. Thestudy aimed at evaluating the bioactive compounds (phytochemicals) and antioxidantactivity of leaf, stem, and calyx of roselle, extracted with methanol. Phytochemicalswere identified using numerous test methods and quantified with a UV-Vis spec-trophotometer. The screening test revealed a higher number of phytochemicals in thecalyx extract than the leaf or stem. With the quantification, the highest concentrationwas recorded in the calyx, followed by the leaf and then the stem. The antioxi-dant activity of the investigated plant was in the order of calyx>leaf>stem. Higherrecoveries, ranging between 90%-110%, was obtained for all compounds. Therefore,this study provides evidence that the leaf, stem, and calyces of roselle plants arethe probable source of antioxidants and many bioactive compounds, justifying theirethnopharmacological use in conventional medicines.
Implementation of Grid-computing Framework for Simulation in Multi-scale Structural Analysis Data Iranata
IPTEK The Journal for Technology and Science Vol 21, No 2 (2010)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v21i2.82

Abstract

A new grid-computing framework for simulation in multi-scale structural analysis is presented. Two levels of parallel processing will be involved in this framework: multiple local distributed computing environments connected by local network to form a grid-based cluster-to-cluster distributed computing environment. To successfully perform the simulation, a large-scale structural system task is decomposed into the simulations of a simplified global model and several detailed component models using various scales. These correlated multi-scale structural system tasks are distributed among clusters and connected together in a multi-level hierarchy and then coordinated over the internet. The software framework for supporting the multi-scale structural simulation approach is also presented. The program architecture design allows the integration of several multi-scale models as clients and servers under a single platform. To check its feasibility, a prototype software system has been designed and implemented to perform the proposed concept. The simulation results show that the software framework can increase the speedup performance of the structural analysis. Based on this result, the proposed grid-computing framework is suitable to perform the simulation of the multi-scale structural analysis.

Page 10 of 35 | Total Record : 345

 8   9   10   11   12 

Filter by Year

2007 2025


Reset
Filter By Issues
All Issue Vol 36, No 1 (2025) Vol 35, No 3 (2024) Vol 35, No 2 (2024) Vol 35, No 1 (2024) Vol 34, No 3 (2023) Vol 34, No 2 (2023) Vol 34, No 1 (2023) Vol 33, No 3 (2022) Vol 33, No 2 (2022) Vol 33, No 1 (2022) Vol 32, No 3 (2021) Vol 32, No 2 (2021) Vol 32, No 1 (2021) Vol 31, No 3 (2020): In-Press Vol 31, No 3 (2020) Vol 31, No 2 (2020) Vol 31, No 1 (2020) Vol 30, No 3 (2019) Vol 30, No 2 (2019) Vol 30, No 1 (2019) Vol 29, No 3 (2018) Vol 29, No 2 (2018) Vol 29, No 1 (2018) Vol 28, No 3 (2017) Vol 28, No 2 (2017) Vol 28, No 1 (2017) Vol 27, No 3 (2016) Vol 27, No 2 (2016) Vol 27, No 1 (2016) Vol 26, No 2 (2015) Vol 26, No 1 (2015) Vol 25, No 3 (2014) Vol 25, No 2 (2014) Vol 25, No 1 (2014) Vol 24, No 3 (2013) Vol 24, No 2 (2013) Vol 24, No 1 (2013) Vol 23, No 4 (2012) Vol 23, No 3 (2012) Vol 23, No 2 (2012) Vol 23, No 1 (2012) Vol 22, No 4 (2011) Vol 22, No 3 (2011) Vol 22, No 2 (2011) Vol 22, No 1 (2011) Vol 21, No 4 (2010) Vol 21, No 3 (2010) Vol 21, No 2 (2010) Vol 21, No 1 (2010) Vol 20, No 4 (2009) Vol 20, No 3 (2009) Vol 20, No 2 (2009) Vol 20, No 1 (2009) Vol 19, No 4 (2008) Vol 19, No 3 (2008) Vol 19, No 2 (2008) Vol 19, No 1 (2008) Vol 18, No 4 (2007) Vol 18, No 3 (2007) Vol 18, No 2 (2007) Vol 18, No 1 (2007) More Issue