Journal Cover
  • Vehicular Communications for Road Safety Applications

    • Authors: Can BIYIK
      Abstract: Computer system frameworks are more modern, similar to vehicles, taking into account that they have PC sensors and are committed to a piece of the vehicle's activity. There is a framework that is cooperative to guarantee an answer that may redesign the security in rush hour gridlock. Correspondences in vehicles are a crisis of the IT innovation that incorporates the vehicle to vehicle, vehicle to framework, vehicle to person on foot correspondence, and the vehicle to everything. Regularly, these vehicles' clients have a hefty dependence on the seat straps and airbags to defend them from any dangers during a mishap. They are like a security net that would defend the gymnastic performers in a bazaar show. The advanced methodology goes past the security nets methodologically, and we ought to battle that the vehicular correspondence networks are not there yet. On the off chance that they are probably going to be available, no trial capacity ought to be finished. There is a conviction of conceivable value of the savvy vehicle coordination that could be higher. The exhibition gauge might be secure further assessment. The innovative work and mechanical consolidation of vehicular correspondence advancements will guarantee a coordinated car innovation. The mix of vehicles' data benefits, their security, and their financial presentation will add to a wise metropolitan transportation structure.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Phase Change Material (PCM) Effect on Photovoltaic Performance of Solar
           Panels

    • Authors: Mena ALİ; İbrahim KOÇ
      Abstract: Photovoltaic (PV) cells energy production limitation leads to make its important to operate those panels in the best operating conditions. In addition, sunlight is lower and cell temperature is higher, all of which are variables that adversely affect power generation. The potential reduction of cell temperature by one of the alternative thermal control techniques, phase change material (PCM) installation is discussed in this article. Three types of PCM (RT15, RT35, and SP25E2) are used together in the proposed system to overcome wide temperature range, in such method to reduce the PV panel temperature. The proposed scheme is simulated using MATLAB. Simulation results shows that the effect of high temperature PCM is the overall effect. If the temperature is smaller than the PCM melting point, the use of PCM is disadvantage. This disadvantage is that the temperature of the panel increases more than the ambient temperature.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Combination of Fuzzy C-Means and Thresholding for Breast Tumor
           Segmentation Using Medical Images

    • Authors: Barish İZADDİN; Ayça KURNAZ TÜRKBEN
      Abstract: Breast tumor segmentation is a crucial stage in breast cancer therapy and follow-up. Radiologists can minimize the high workload of breast cancer analysis by automating this difficult process. After pre-processing source pictures, this article established a system for accurately segmenting breast tumors and non-infected areas (breast) on medical imaging using combination of Fuzzy c-Means and Thresholding (FCMT). This is a computer-aided diagnostic method that works on each individual breast slice without any training for segmentation. On a database of 79 images of Computed Tomography (CT) and Magnetic Resonance Imaging (MRI). To increase the image quality, we used pre-processing techniques such as contrast augmentation before applying the FCMT for segmentation. To assess the effectiveness of the devised approach, the Mean Square Error, dice coefficient, Structured Similarity Index, Peak Signal-to-Noise Ratio, accuracy, and sensitivity were computed. On the same dataset, we compared our technique to different segmentation methods. With a dice coefficient of 0.9568 and an accuracy of 0.9731, our approach surpassed the other substantially. The suggested approach is more resilient and accurate in segmenting tumor progression on medical pictures, according to the findings of the experiments.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Regenerative Design in Nature Conservation

    • Authors: Huriye Hande HARMANKAYA; Leyla TOKMAN
      Abstract: Nature has always been a source of knowledge and inspiration by attracting people's attention. A suitable solution can be found for the relationship between built environment and nature with the design principles created by using the existing principles found in nature. For this, it should be realized that the human-nature relationship should provide mutual benefit and progress by supporting each other. In the research, regenerative design, one of the nature-based design approaches, that is based on the fact that human beings are a part of environmental systems and any change in these environmental systems will also affect humans, is discussed. In this approach, it is not only aimed to protect existing environmental systems, but also aimed to advance and improve these systems. Regenerative design, which aims to contribute to the environment by improving environmental damage, has an important potential to improve environmental systems and human health.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Evaluation of the University Campuses in Walled Cities: Nicosia Case

    • Authors: Abdullah CAN; Cemil ATAKARA
      Abstract: The texture in historical cities is one of the important urban memory elements that should be preserved and passed down from generation to generation. Buildings, public spaces in this texture sometimes differ in form and function; therefore, the user base may change. The important thing is to preserve the historical city and its surroundings. In terms of continuity of history and the ability to read the past through the city is possible by respecting the original. Within the scope of this study, the effects of the Rauf Denktaş University in Nicosia walled city, on the historical texture and the region were investigated and the effects of the extension of the street where the university is located for the continuity of the future were mentioned. In order to protect historical cities and ensure the continuity of cultural and architectural heritage in these cities in the most accurate way, the changes and transformations they have undergone over time are examined through the building converted into a university, and the problem of form-content change in historical buildings and in the historical environment has been addressed. In line with the findings obtained from this study, it is aimed to seek solutions in order to continue the transfer of the continuity of the region and urban memory to future generations.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Thermal Performance Improvement of Shell and Helical Coil Heat Exchanger

    • Authors: Tareq ABED; İbrahim KOÇ
      Abstract: Nowadays, energy consumption increases so it is necessary to enhance the efficiency and performance of heat energy transition. The effects of perforated twisted tape on heat transfer coefficient, effectiveness, Nusselt number, and pressure drop are studied numerically. Modeling of heat exchanger with the perforated twisted tape is applied where finite volume method is utilized to perform the setup and complete the solution. The numerical results are validated with previous experimental results and there is an excessive agreement between the numerical and experimental results. The range of Reynolds numbers is from 3800 to 18000. The results showed that the overall heat transfer coefficient U increases with the rise of Reynolds number where the perforated twisted tape achieves the maximum enhancement of heat transfer coefficient achieving the numbers from 965 to 1250 W/m2K. The perforated twisted tape has the highest ratio of enhancing Nusselt number following the numbers from 65 to 115 and this can be explained as the velocity rises, the turbulence level increases. Heat exchanger effectiveness increases with the growth of Reynolds number where the perforated twisted tape attained the supreme enhancement of effectiveness reaching the numbers from 0.35 to 0.85. It is indicated that the twisted tape configuration has the maximum ratio of pressure drop increase as the complicity of twisted tape rise the pressure drop. Contours and streamlines of hot and cold water cross the heat exchanger explains the distributions of temperature, velocity, and pressure.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Reliability of Design of Floor Slab Systems Using Plastic Moment
           Distribution Method

    • Authors: Saif SADEK; Tuncer ÇELİK
      Abstract: This research study the reliability of designing continuous floor slabs with varying end conditions under affected ultimate Loads by plastic theory. This paper has adopted an approach using the plastic moment distribution method in the design of solid slabs .16 rectangular slabs have the same depth but different end conditions and dimensions in x and y- directions were investigated. The results obtained from the continuous solid slabs by plastic moment distribution method achieved the conditions of equilibrium, mechanisms, and plastic moment and it was compared with computer program adopted elastic theory method under loading combination ultimate limit state and serviceability limit state. The results are compared according to the parameters of the British Code (BS 8810) allow that any value of bending moments by the plastic method must be not less than 30 % of the elastic moment at supports and at span (maximum sagging moments) in plastic are high in elastic analysis. After comparing, all the obtained results showed that they are in agreement with the determinants of the British code, The method adopted in this study gave the values of the plastic moment (MP), at which the plastic hinge (PH) is formed and true mechanism of failure.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • High Speed Railways and Innovative Applications in the Context of
           Sustainability

    • Authors: Mehmet Fatih ALTAN; Mehmet Çağrı KIZILTAŞ, Yunus AYÖZEN
      Abstract: Transportation; Has made an important contribution to the development of society throughout history and has been the driving force of technological developments. In parallel with the increase of transportation possibilities, the communication and interactions of the societies with each other have been strengthened, which has made important contributions to the common civilization of mankind. Transportation; Is one of the leading service sectors today and has an influential and influential relationship with social, technical, economic, cultural and political parameters.Technological developments in the 20th century reveal a wide range of needs and uses for each of the different transport types. In the process we are in the 21st century; It is necessary to maximize the integration of these species with each other through the efficient and efficient use of each of the different transportation types. Our country, which is in the process of economic development, shows planned growth targets in this frame. Economic growth; It is a process that can be passed on with a transportation system that has solved its problems and works. The most problem-free and efficient transportation system; Balanced distribution of species and integration between species. In our country, in the distribution system, the distribution of roads has a share of over 90% on both the passenger and the load, and the geometric standards of the roads are below the highway standards, causing serious problems in road traffic safety.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Bluetooth Kulaklık Üreten Bir Firmada Proje Yönetimi
           Uygulaması

    • Authors: Burcu ÖZCAN; Rümeysa BÜÇGÜN
      Abstract: Today, as a result of the intensive use of project work in all kinds of fields and the complexity of the work, project management has become increasingly widespread and important. Project management provides a systematic way to reach the targets at the prescribed time, taking into account the objectives and constraints of the projects. With the introduction of the concept of project management for large areas, software in this area has started to gain interest. In this study, the production process of bleutooth headphones is examined in a company where technological products are produced. As a result of the analysis, the necessity of Project Management in today's conditions has been determined and it is concluded that all kinds of projects play a major role in achieving highly beneficial results. As a result of the work done, the project is completed in the prescribed time. The critical activities of the project are determined as production and termination of the project. As a result of the project, completion percentages and costs of the activities are determined.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
 
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