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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 7 Documents
 1 
Search results for , issue "Vol 34, No 1 (2023)" : 7 Documents clear
Project Delay Risk Assessment Farida Rachmawati; Herdira Dita Ramadhani; Aulia Shofi Nurhidayah
IPTEK The Journal for Technology and Science Vol 34, No 1 (2023)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v34i1.16263

Abstract

Maintenance activities on power plant projects, which are located in remote areas, are prone to risks related to project delay due to the high complexity of work and limited completion time. This research aimed to fill the existing research gap by developing a delay risk assessment of those projects using a probability impact matrix, which is then transformed into a fuzzy set theory. A case study has been undertaken to represent this research topic at three PLTMGs in Nusa Tenggara. The research steps were potential delay risks identification, critical risk assessment, and risk response development. The results show that the critical risks are lack of skilled and experienced manpower, delay in material and equipment delivery, poor communication and coordination between the contractor and the client, unavailability of materials in the local market, and incomplete material received. Several risk responses are provided in this research, such as strengthening the qualification of the job vacancy, having regular training or sharing sessions before the project execution, and having a stock of emergency spare parts in the central warehouse.
Evaluation Of Dehydration Performance Of Belitung Taro (Xanthosoma Sagittifolium) Using Tray Dryer Maktum Muharja; Rizki Fitria Darmayanti; Achri Isnan Khamil; Andika Prastika; Muhammad Rizalluddin; Siska Nuri Fadilah; Difka Augustina Diana Sari
IPTEK The Journal for Technology and Science Vol 34, No 1 (2023)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v34i1.14878

Abstract

Belitung Taro (Xanthosoma sagittifolium) is a plant that can be processed into various food products. The high-water content of taro and the lack of a precise drying system made this material easy to rot. This study aims to evaluate the dehydration performance of tray dryers to reduce the water content of Belitung Taro. The independent variables used were air velocity (3-6 m/s), taro thickness (1-4 mm), and drying time (30-120 min). The results showed that the optimum drying time of taro is 30 min. The dryer airflow of 5 m/s significantly reduces the water content. The thickness of the slices positively affects the drying rate. The lowest water content was obtained in drying with a thickness of 1 mm. The ANOVA results show the effect of thickness, time, and flow rate variations on the drying rate. Three types of mathematical modeling are used to estimate moisture content: Newton, Page, and Modified Page. The Modified Page equation was preferred to detect the moisture content of the taro. From this study, the optimum condition of the tray dryer can be the best solution to dehydrate Belitung Taro effectively and efficiently
The Relation Among Business Process Orientation Practices in Influencing Organizational Performance Stefanus Christian Susetyo Harjanto; ER Mahendrawathi
IPTEK The Journal for Technology and Science Vol 34, No 1 (2023)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v34i1.15155

Abstract

Organizations always look for ways to improve their performance to survive in the business environment. One way to improve organizational performance is to improve business process orientation (BPO). Several studies identified practices that can be implemented and significantly impact an organization’s BPO maturity. These practices are called Critical Practices (CPs) strategic view, process definition and documentation, process measurement and management, organizational process structure, people management, process organizational culture, market orientation, supplier view, and information technology. However, most studies treat CPs independently, and the relationship between CPs and between CPs with organizational performance has not been addressed. This study tests and confirms the relationship between CPs, BPO, and organizational performance. Based on the literature, a structural model of the relationship between CPs and organizational performance is developed. An online questionnaire is designed to collect data from various organizations in Indonesia. The survey results are analyzed using Structural Equation Modeling (SEM) to investigate the relationship between variables. Most hypothesized relationships between CPs are confirmed except the relationship between supplier practices (SU) and culture (CT), which are not supported. Not all practices affect organizational performance directly, but they must be mediated by other practices to have a significant effect. The results suggest that to improve organizational performance, an organization needs to improve the practice of strategic view (SV), performance measurement (PM), customer (CU), process definition (PD), and information technology (IT).
Ultrasound Image Synthetic Generating Using Deep Convolution Generative Adversarial Network For Breast Cancer Identification Dina Zatusiva Haq; Chastine Fatichah
IPTEK The Journal for Technology and Science Vol 34, No 1 (2023)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v34i1.14968

Abstract

Breast cancer is the leading cause of death in women worldwide; prevention of possible death from breast cancer can be decreased by early identification ultrasound image analysis by classifying ultrasound images into three classes (Normal, Benign, and Malignant), where the dataset used has imbalanced data. Imbalanced data cause the classification system only to recognize the majority class, so it is necessary to handle imbalanced data. In this study, imbalanced data can be handled by implementing the Deep Convolution Generative Adversarial Network (DCGAN) method as the addition of synthetic images to the training data. The DCGAN method generates synthetic images with feature learning on a Convolutional Neural Network (CNN), making DCGAN more stable than the basic generative adversarial network method. Synthetic and original images were further classified using the CNN GoogleNet method, which performs well in image classification and with reasonable computation cost. Synthetic ultrasound images were generated using a tuning hyperparameter in the DCGAN method to adjust the input size on GoogleNet for imbalanced data handling. From the experiment result, the implementation of DCGAN-GoogleNet has a higher accuracy in handling imbalanced data than conventional augmentation and other previous research, with an accuracy value reaching 91.61%, which is 1% to 4% higher than the accuracy value in the previous method.
User-Centered Design-Based Approach in Scheduling Management Application Design and Development Darlis Herumurti; I Made Satria Bimantara; I Wayan Supriana
IPTEK The Journal for Technology and Science Vol 34, No 1 (2023)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v34i1.15088

Abstract

The process of manually making and setting course schedules using Microsoft Excel is ineffective, time-consuming, and still prone to errors. This research develops a website-based scheduling management application with a case study at SMK Pariwisata Margarana so that it can solve scheduling problems manually. The UserCentered Design (UCD) method is applied in the application prototype design stage. Open interviews, field observations, simulations, and questionnaires were used as research data collection methods. Three iterations were carried out at the prototype design stage to fulfill all user needs. The high-fidelity prototype in the last iteration is then implemented into an application. Application quality is measured using ISO/IEC 25010 with five characteristics. The test results on usability characteristics show that the scheduling management application obtains an average usability score of 91.2%. The appropriateness recognizability sub-characteristic obtained the highest usability score of 93.53%. UCD can help produce an application that can meet all the user’s needs when implemented in the application design phase.
Framework Analysis Using The Rapid Evidence Assessment (REA) Method in Human Resources Information System Development Dhimas Pamungkas Wicaksono; Chastine Fatichah
IPTEK The Journal for Technology and Science Vol 34, No 1 (2023)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v34i1.15740

Abstract

The framework application in the first phase of the Human Resources Information System (HRIS) development at X Company, which is a mining company, has so far been considered to have encountered many problems, with bugs and defects frequently being found that occurred when the project was deployed to a production environment. This happens due to frequent changes in project requirements in the middle of the development process, so many features become less relevant to business systems. So making decisions quickly and precisely before the first phase ends is necessary. The Rapid Evidence Assessment (REA) method was taken because it is a rapid review, which only a few weeks can decide based on field objective evidence. The use of a questionnaire involving project members was compared with the literature review results, namely that five aspects affected the time to develop: organizational aspects, process aspects, project aspects, people aspects, and technical aspects. The Scrum framework is a framework that is much more relevant to the current project conditions, with 3.6-point results and 3.1 points for the waterfall.
Epidemiology and Characteristics of Resistant Typhoidal Salmonella Strains Prevalent in Lafia, Nigeria Jebes Lamini Ngolo; Olukayode Orole; Aleruchi Chuku
IPTEK The Journal for Technology and Science Vol 34, No 1 (2023)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v34i1.14677

Abstract

Resistance to antibiotics by pathogens is a burden to disease management. The study characterized Salmonella species in patients with fever and determined their antibiotic susceptibility patterns in Dalhatu Araf Specialist Hospital Lafia, Nigeria. Faecal samples were collected from 400 patients, and Salmonella species were isolated. The isolates were rested against ten antibiotics to determine their multi-drug and extensively drug-resistant capabilities, after which molecular characterization was done. Male patients between the ages of 21 to 30 years had the highest prevalence of 17(44.7%) of the pathogen, and they were the most susceptible among those who regularly drank water from boreholes (19(50.0%)). Augmentin with 44(73.0%) Salmonella susceptibility was the most effective antibiotic, while gentamycin, ampicillin, chloramphenicol, and cotrimoxazole had the isolates obtaining resistance of 60(100%), 59(98.0%), 57(95.0%), and 56(93.4%) respectively. Only six of the 60 Salmonella isolates were not multidrug-resistant, while 25 were extensively drugresistant. Isolates S9 and S25 with staG genes were the only Salmonella typhi found in the study; others with ttr genes were of the Salmonella genera. The study concludes that the first-line antibiotics administered to patients with typhoid fever are no longer effective; hence, proactive measures should be put in place to surmount the observed challenge.

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