Welcome to the Open Access System!
OpenAccess@IKU is the Academic Open Access System of Istanbul Kultur University. It was established in June 2014 to digitally store and open access the academic outputs of Istanbul Kultur University in international standards. OpenAccess@IKU includes academic outputs such as articles, presentations, thesis, books, book chapters, reports produced within the body of Istanbul Kultur University.
Recent Submissions
The Effect of Interferential Currents and Tens on Pain and Functionality in Patients With Chronic Mechanical Low Back Pain
(Galenos Publishing House, 2024) Çolak, Tuğba Kuru; Sert, Nihat; Sert, Buse; APTİ, ADNAN
Objective: This study aimed to compare the effects of interferential current (IFC) and transcutaneous electrical nerve stimulation (TENS) on pain, disability, and flexibility for treating patients with chronic low back pain (CLBP). Materials and Methods: This study included 50 volunteer patients diagnosed with CLBP randomly assigned to IFC and TENS treatment. In addition to electrical stimulation, therapeutic ultrasound, hot packs, and exercise were administered to both groups. All patients underwent 20 sessions of treatment for 4 weeks and 5 days on weekdays. The Numerical Pain Scale, Oswestry Scale (ODI), and sit-and-reach test were used for evaluation. Patients were evaluated 3 times: before treatment, at the 10th session, and after treatment. The paired t-test was used for statistical analysis. Results: Significant improvement was seen in both treatment groups’ pain levels when the levels of pain before and after treatment were compared. Before and after treatment, both groups in the sit-and-reach test and Oswestry evaluation showed a significant improvement (p>0.05). The change in pain and disability scores did not show superiority in the TENS and IFC groups (p>0.05). Only in the sit-and-reach test did the IFC group show significantly more improvement after the 20th session treatment (p=0.026). Conclusion: IFC and TENS should be used in patients with CLBP to control pain and improve function. However, studies with electrical currents determined by different biophysical parameters are needed to determine the superiority of TENS and IFC in terms of treatment outcome measures. ©Copyright 2024 The Author. Published by Galenos Publishing House on behalf of Turkish Spine Society.
Structure Preserving Schemes for Coupled Nonlinear Schrödinger Equation
(Institute of Physics, 2024) AKKOYUNLU, CANAN; ŞAYLAN, PELİN
The numerical solution of CNLS equations are studied for periodic wave solutions. We use the first order partitioned average vector field method, the second order partitioned average vector field composition method and plus method. The nonlinear implicit schemes preserve the energy and the momentum. The results show that the methods are successful to get approximation. © 2024 Institute of Physics Publishing. All rights reserved.
Determining a New Warehouse Location for an Electrical Home Appliances Company
(Springer Science and Business Media Deutschland GmbH, 2024) KIZILKAYA, İLAYDA; KEVSER, TOLGAHAN; OFLUOĞLU, HANDE; ÖLÇÜCÜER, FEYZA; DEMİREL, DUYGUN FATİH
In today’s businesses, supply chain management is a critical factor in terms of efficiency, profitability and cost savings. The success of the supply chain is possible with the right management of the rings such as warehousing and logistics activities. Deficiencies in warehouse and logistics management can lead to inefficiencies and errors in the supply chain, which can have negative effects on business profitability and customer satisfaction. Strategic decisions regarding warehouse locations are vital for cost policies. In this study, a warehouse location selection procedure is proposed for an electrical home appliances company considering the distances to the customers, their transaction volumes, and various other costs. The approach is basically a two-stage facility layout problem that first solves a weighted Euclidean minisum model defined on a continuous plane. Then, four alternative locations that are close to the result obtained in the first step are determined. In addition, two lands owned by the firm are added to the set of alternatives. Next, a p-median (1-median) model is solved and the most suitable warehouse location is determined. Through sensitivity analysis, the changes in the solution are searched for various rent values. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
Improving Quality Control Applications by Increasing Inspection Efficiency and Decreasing Nonconformance Percentage
(Springer Science and Business Media Deutschland GmbH, 2024) YILMAZ, BAŞAK; FIRAT, SENA; CABA, CİHAN; BEŞİR, BERNA; ÜLKÜ, İLAYDA
Quality controls are activities to evaluate the level of conformity of product attributes and optimal quality objectives. When 100% inspection is applied in quality control processes, sampling is used because it causes high costs, long control times and product damage. Acceptance sampling, which is a statistical method, determines whether the lot can be accepted or rejected in line with the tests performed on the samples taken from the lot. The acceptance sampling plan depends on multiple factors such as the level used, the degree of control applied, the lot size, and the acceptable quality level. For this reason, the use of standard sampling plans that increase the validity of quality control operations can be expressed. In this paper, acceptance process applications were studied for a the company that demonstrates textile industry studies. In this the company, the control processes entered the products in the batch of different sizes coming from the regulations used for the contract are applied. To determine the acceptance listening, the execution of the lot, the control measurement dimensions entered first, the reasons for the return of the the company’s four product groups and the AQL reports are reviewed, and the statistical evaluations of the quality controls come to an end. Next steps, using ANSI/ASQ Z-1.4, observations suitable for lot sizes and appropriate acceptance-rejection details were determined and compared with the size and decision points of the the company. Cause-effect diagrams do not take into account the reasons that cause the returns to be made so that the possible reasons for the returns can be examined. Finally, according to the results of the sampling, solutions were found to make the dimensions for these reasons. Cause-effect diagrams do not take into account the reasons that cause the returns, so that possible causes of the returns can be examined. Finally, according to the sampling results, solutions were found for sizing for these reasons. It is recommended to taken 50 samples from lot sizes between 281–500, 80 samples from 501–1200 lot sizes, and 125 samples for lot sizes between 1201 and 3200. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
Cloud-Based AI Role in Intelligent Pharmaceutical Manufacturing Facilities
(Springer Science and Business Media Deutschland GmbH, 2024) DARABSEH, ESRAA; TARHAN, İBRAHİM ETHEM
Cloud-based Artificial Intelligence (AI) brings advanced computing capabilities into manufacturing facilities without capital expenditures. Cloud AI is capable of assisting turn traditional factories into intelligent factories at low cost. The disruptive innovation of cloud and artificial intelligence equipment in smart factory management leads to increased economic growth and the development of a production pipeline [1]. This article investigates how adopting Cloud-based AI services in intelligent pharmaceutical manufacturing facilities affects the factory’s internal process management. The article uses SWOT/PESTEL analysis to evaluate internal and external factors affecting such facilities based on a case study. In addition, the article uses Minitab to perform linear regression analysis on the case study to determine the outcomes of adopting Cloud-based AI in such factories. The article finds a positive effect of adopting modern technologies, such as Cloud-based AI, on creating a highly efficient production environment, reducing costs, and increasing revenues. However, further investigation is needed to conduct similar research on other pharmaceutical manufacturing facilities of different sizes to understand improved how such implementation affects these facilities. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
