Periodicals of Engineering and Natural Sciences (PEN - International University of Sarajevo)
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The Urban Transformation with New Legal Regulations
Get PDFAll around the world, cities need projects and applications for renewal, transformation, resettlement and improvement due to reasons such as economic reasons, inadequacy in social development, excessive population accumulation, wrong place selection and natural disasters. Many project application examples are available in the world and in our country. They vary in their purpose, form of implementation, organizational patterns and outcomes. In the process of reclaiming troubled areas of cities; a spatial transformation is also being studied at the same time to ensure the social and cultural development.
In this context, the process of urban transformation in our country has been evaluated from the perspective of new legal regulations. In the study, firstly, the urban transformation was very briefly defined and it was focused on the historical development of urban transformation in the Turkey and world. Secondly, Past legal regulations and current legal regulations regard to urban transformation were examined. Lastly, the new legislation was critically discussed. Also the current trends related to urban transformation are investigated
Feature extraction of the brain tumours with the help of MRI, based on symmetry and partitioning
Get PDFComputer-aided diagnostic (CAD) studies are used for scientific observations for explanation since very long time, but they are extraordinarily powerful to perform completely machine-driven algorithmic analyses for brain magnetic resonance imaging lesions. Structural and purposeful imbalance within the human brain could be reviewed. This imbalance analysis of the brain has terrific importance in an image analysis. In the present work, the imbalance between the two hemispheres is considered as the base for the detection of the tumour. We have segmented the brain into the two halves using thresholding technique, followed by statistical feature extraction for the double authentication of the existence of tumour which proves to be the better approach. The approach also takes into consideration corrections needed for the tilt observed while capturing the MRI
Synthesis of activated carbon of lote wood and study its physical properties
Get PDFThe paper focuses on studying activated carbon and its uses then producing activated carbon using lote wood that is available in Iraq through the process of carbonization. In addition, the paper defines the best temperature to produce huge size of coal. Then use the process of carbon activation through Physical activation. The latter process can be done through steam heating or oxygen for 1000 C°. After that, several measurements have been done to measure the efficiency of activated carbon, and other physical checks related to carbon like humidity and percentage of ash
An experimental study for different types of natural fiber reinforced composite material
Get PDFThe mechanical properties of plain-woven natural fiber-reinforced composites (NFRC) were investigated in the present study. Three types of natural fibers, Cotton, Kenaf, and Wool, were used as reinforcements for Epoxy-based overlaid composites. The properties E-type fiberglass/Epoxy composite were brought to comparison with the features of NFRC\u27s. The mechanical properties of samples exposed to tensile, shear, and flexural loadings were obtained. The results showed that the ratio of the specific tensile strength of the cotton/epoxy laminates to laminates, which reinforced with kenaf or wool fibers were 1.71 and 4.47, respectively. Under shear loadings, the specific strength of the cotton fiber samples was also 1.24 and 2.45 times greater than kenaf and wool fiber samples, respectively. The particular flexural strength of the cotton/epoxy samples were 1.42 and 2.34 times greater than kenaf/epoxy and wool/epoxy composites. As a comparison for specific energy absorption between cotton/epoxy samples and glass fiber reinforced specimens under tensile loading, the cotton samples were 2.7 times greater than that of the glass samples. The work also included measurements of the amount of water absorption by different examples, moisture absorption tests were carried out in intervals of 3 and 10 days. The results showed that the most significant percent of the water absorption, which is (7.47%) was related to the cotton reinforced specimens at an interval of 10 days
Effects of Cooling Rate on Strength and Microstructure of Powder Metallurgy Superalloys
Get PDFThe excellent mechanical properties of powder metallurgy superalloys strongly depend on the microstructure, grain size, morphology, and size distribution of the γ\u27 precipitates. In this study, the effects of cooling rate on strength and microstructure of powder metallurgy superalloys were investigated. Articles were reviewed about this topic and they all were evaluated. Different types of powder metallurgy superalloys such as FGH4096, U720LI, UDIMET 500, MAR-M247, K465, IN738LC, Rene88DT, CM247LC and K5 were selected for this study. These materials were tested in different parameters (temperature and time) and different cooling rates were applied. Test results showed that cooling rate has considerable effects on strength and microstructure of powder metallurgy superalloys. It was observed that the strength increased by the increment of cooling rate. Also, almost homogeneous microstructure was obtained at high cooling rate
The Application of CFD to IUS Buildings Analysis
Get PDFIn this study, wind characteristics and energy potential of IUS Campus region is investigated. Assessment of the site is carried out by using turbulent flow models. Commercial software STAR CCM+ was used to solve turbulent flow equations. STAR CCM+ is a computational fluid dynamics (CFD) software package that solves Navier-Stokes equations that define fluid flow, by using numerical techniques
Qualıty Management In Logıstıcs Sector: Prıncıples And Practıce
Get PDFAs it is the case for production and service sectors, one of the key ways for a logistics company to createsustainable competitive advantage is to differentiate itself from the rest with the quality that it offers.Researchers and practitioners have developed various quality improvement policies for logistics serviceproviders and each of the policies addresses certain aspects of the business. This study individually evaluates themajor quality approaches involved in an attempt to explore prospects of combining them in a way to maximizethe benefit of their implementation. To promote applicability the quality approaches are analyzed from theperspective of customers as well as that of implementers of quality programmes
Improving anthropomorphic robot stability using advanced intelligent control interfaces
Get PDFThe article focused on the advanced intelligent control of the stability of anthropomorphic walking robots (AWRs), in order to validate a new and useful method of moving in the virtual environment, which determines a substantial increase in their stability. The obtained results lead to Versatile Intelligent Portable Robot Platform VIPRO, developed to improve the walking anthropomorphic robots’ performances, provide unlimited power for design, test, experiment the real time control methods by integrating the Intelligent Control Interfaces (ICIs) in robot modeling and simulation for all types of humanoid robots, rescue robots, firefighting robots
Role of the academic curriculum in the development of the basic learning outcomes (knowledge - skills – capabilities) of the architect using the method of currere
Get PDFBasic learning outcomes play an important role in giving students the general academic profile that determines the characteristics of the academic program outcome. The research problem is formulated, which is the lack of clarity about the role of the academic curriculum in the development of the basic learning outcomes of the architect in particular. Based on the foregoing, the research has tackled the development of basic learning outcomes (knowledge-skill-capability) for the architect in particular, using the method of Currere that is approved globally in the development of academic curricula and vocabulary (knowledge - skill - capacity) for the purpose of developing the efficiency of the academic outcome. The research adopted a descriptive analytical method using the method of Currere. The results of the research include a diagnose of a number of gaps which were based on reviewing the vocabulary of the course according to the need for it or its compatibility with the academic description of the graduate engineer or the academic outcome. Furthermore, the research determines some conclusions that showed the shortcomings of the academic curriculum and the reality of the practice, as well as the research has recommended with a set of recommendations that maximize the compatibility between the outcomes of the academic program and the requirements of the labor market
Effect of gamma-ray on some optical properties of polymetheylacrelate film (PMMA) doping with phenolphthalein (phph)
Get PDFIn this study, it has been investigated the effect of Gamma radiation on some optical characteristics of polymetheylacrelate (PMMA) polymer film specimens blended with 9% of phenolphthalein (phph), using casting technology and at room temperature conditions. The thickness of the prepared specimens were (20±2) μm. The absorbance and transmission spectrum have been recorded in addition to their coefficients at range (299-1100) nm. The study has been reported absorbance and transmittance properties of the prepared samples and their coefficients, in addition to the optical gap energy for allowed and forbidden electronic transition. The study concluded that both absorbance and extinction coefficients are increasing proportionally with time of irradiation. While increasing time of exposure of gamma ray on the film layer of the prepared samples resulted in reduction of the optical gap energy property for allowed and forbidden electronic transition value