Periodicals of Engineering and Natural Sciences (PEN - International University of Sarajevo)
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Management of investment processes in social capital: A conceptual approach to assessment
Get PDFAny social problems need to be solved first of all by investment methods: creating new jobs (innovative training and retraining of employees), increasing labor productivity and increasing real wages, and raising the economic interest of employees and entrepreneurs in the highly efficient use of accumulated total human capital (the life quality improving). These methods should contribute raising the level of trust in society. Due to the generalization of theoretical and practical studies, the classification of income types from accumulation into social capital, conditions and causes of its formation are generalized. It is determined that management of investment processes in social capital is impossible without qualitative and quantitative assessment of investments. The comprehensive system of social investment assessment at the macro-, meso- and microeconomic levels is presented. A quantitative aspect of this system involves a direct assessment of the enterprises’ financial costs in the region for social programs and initiatives. The qualitative aspect is related to the assessment of the completeness and complexity degree of the investment process. The given system of assessment will allow identifying the main problems in the social investment management. 
Formation of an innovative concept of management on the basis of reconstruction of genetic algorithm of management technology
Get PDFIs proposed a new concept of enterprise management, which is based on the theory of innovation dynamics. The theory of innovation dynamics for the study of enterprises determines that there are always cyclical fluctuations of equilibrium also allows you to determine the genetic features and the ability to follow the options for enterprise development. The authors think that it is possible to regulate vectors of strategic development of the enterprise and to bring it closer to a state of dynamic development by means of the use of adaptive complex of innovative technologies of enterprise management. To form an adaptive innovation technologies complex for the enterprise, the authors propose to determine the genotype of management technology, with pointed out of the gene X - innovation and to form the genome of technology based on the R-dependent components. The reconstruction of genetic algorithm of technology management the authors propose to carry out using quantitative and qualitative indicators of financial, economic, investment and innovative range of the company activity. The analysis of the effectiveness of the formation and transformation of the genetic algorithm took place on the basis of the research of PJSC "Bashtanskiy Cheese Plant" from the period of 2008-2017. According to the results of modeling, was formed a matrix of values for modeling the gene "Innovation", based on the reconstruction of genetic algorithm of technology management
Research on the possibilities of using linear observation models in welding processes
Get PDFThe usage relevance of linear observation models of welding processes is substantiated. A brief analytical review of scientific papers on using linear observation models for researching the processes of arc welding is introduced. An example of studies utilizing a linear observation model based on the results of experiments with alloying of a weld metal is given. The type of linear observation model – fractional replication – is determined. An experiment planning matrix and test results are given. After performing tests and processing the experimental data, mathematical models in the form of dependencies of the transfer of alloying elements into the weld metal were obtained. According to the results of the experiments, empirical models in the form of dependencies evaluating the percentages of manganese, silicon and carbon, transfer coefficients from the “wire-to-product” distance, the diameter of the welding nozzle and the filling wire feed rate were obtained. Since the degree of uncertainty of parameters during welding is high enough, the necessity of further modification of linear observation models using expert knowledge is justified. The mathematical specification of the linear observation model with parameters in the form of fuzzy intervals is given. An algorithm for identifying the parameters of a linear observation model in the form of fuzzy intervals has been developed
Guess the time of implementation of residential construction projects using neural networks ANN
Get PDFThe construction duration of residential projects, especially in building processes, significantly impact the business of a construction company. The balance between the planned cost, direct cost, and overheads directly depend on the precision of the implementation phase of the project. The application of the artificial neural network (ANN) to predict the duration of implementation of a residential construction project from the pre-design stage to completion is comprehensively discussed in this research. The study applies the back-propagation (BP) network made of nodes for error evaluation of the training states. Further, the proposed system illustrated that the artificial neural network (ANN) satisfy the three crucial criteria (cost, quality, and time) used for the evaluation of projects. The ANN provided accurate data for the training and estimation of, the duration of a residential construction project with adequate resources of implementation. The performance of the results for the ANN at 105 iteration shows that the prediction was 99.841% accurate for the overall system. The best fit occurred at the 99th epoch with an MSE of 0.10286
Iraqi e-government and cloud computing development based on unified citizen identification
Get PDFIn this paper, besides an overview of e-Government and cloud computing services in Iraq, an applied survey to establish relevant prospects of the Iraqi citizens for e-Government and cloud computing services was adopted. Moreover, to study the potential putting into practice of e-Government and cloud computing services based on citizen identification in Iraq. Based on survey results, 112 different e-Services were proposed by qualified Iraqi citizens. The requested e-Services were highlighted based on a provided statistical list in this paper. This paper can be an essential step to enhance e-Government and cloud computing functionaries in Iraq consistent with the citizen’s outlooks and discover technical and non- technical barriers that delay the development of Iraqi e-Government and cloud computing.
Lastly, the accomplishment of e-Government and cloud computing imposes several essential tools as in Information and Communication Technology (ICT). The development scheme in this paper involves three years to improve the Iraqi e-Government database and offer the advantageous capability of ICT to all responsible persons and citizens based on Standard Materials and International Certificates
Monitoring corrosion in oil pipelines using non-destructive test
Get PDFThe age of the pipelines is a factor in increasing the potential risk to corrosion in pipelines hence reduces the safety of pipelines, and gets pipelines more likely to explosion or breakage. Thus, that will threaten the safety of individuals and the environment. According to corrosion is the main reason that threatens the pipeline. The danger is not limited to residents, but it could be worrisome if any the leak happened near the water sources. Thus, it will be difficult to address quickly, and requires significant costs could reach billions of dollars. Therefore, it is important to study the reasons that could be caused the pipeline explosion to avoided any effects could be happened, for example, in this paper we will focused on corrosion that happened in oil pipe depending on ultrasonic test methods (UT) to test sample of pipeline. Ultrasonic test is a test which is done by transfer a high frequency pulse through test object and receives a reflected echoes by analyzing the reflected waves which will help us to determine the thickness and other material properties
Comparison of MATLAB Simulink application with PLC application of real-time classical PID controllers in laboratory
Get PDFProcess control is a common area of study for different engineering disciplines. Controllers working with the proportional–integral–derivative (PID) method are generally used in process control. Parameters like level, flow, position, pressure, and temperature are controlled in-process control. PID algorithm can be formed with different microprocessor-based devices. Process control is implemented by using analog input and outputs terminals of PLCs (Programmable logic controller) which is recently the most commonly used in industries. Also, a real-time PID method can be implemented by using a computer-based MATLAB
program in the laboratory.
The liquid level and flow control in the laboratory has been done by using PID algorithms and PLC device and MATLAB real-time interface by using an experimental set. Necessary connections and configurations have been prepared to perform process control. (SIMATIC Manager Step7) is used for programming in PLC. Besides, the MATLAB simulation program is configured to implement real-time control to be compatible with the MF624 data acquisition card. Liquid level and fluid flow control experiments were performed separately for the same PID algorithms formed on two different devices, then liquid level detection and liquid flow control results have been collected and investigated. Based on these results, a total of four experiments were compared with both devices considering the ease and difficulties of using PLC and MATLAB
Mechanism of Joint Formation and Characteristics of Interface in Ultrasonic welding: Literature Review
Get PDFThe study of ultrasonic welding has been going on for more than 50 years. The mechanism of joint formation and characterization of the interface in ultrasonically made joints between metal sheets and wires have been the most thought-provoking area for the researchers. The study of post-welding microstructure, the formation of any intermetallic compound at the interface and their effect on the joint strength, the presence of heat affected zone in the ultrasonically joined sheets has been explored but still, arguably the least understood. Interface characteristics are different in similar and dissimilar combinations of metals. This work presents a comprehensive review of literature regarding the studies on the microstructural analysis at the interface of the joints made by ultrasonic welding on different combinations of metal sheets. Additionally, this paper provides an analysis of the observations made by different scientists that promotes the future scope of research in this area. The study has been confined to ultrasonic metal welding only
Implementation of DoS and DDoS Attacks on Cloud Servers
Get PDFCloud environments face many threats as traditional corporate networks, but due tothe vast amount of data stored on cloud servers, providers become an attractive target.Thus the security level of data on the cloud servers is always a key issue from preventing potential attacks. This paper intends to show a relatively easy way to implement aDenial of Service (DoS) attack and/or a Distributed Denial of Service (DDoS) attack.The used Phyton scripts like HULK or XML-RPC are able to make several hundredrequests to the server in short period of time. The HULK is better for DoS attack,while XML-RPC is for pure DDoS attack. It is concluded that with proper tools andapplications, the access to the VM and DDoS can be implemented relatively easy way
Adapting Television Satellite Dish for Low-Temperature Solar Thermal Application: Experimental Evaluation
Get PDFDigital television broadcasting is currently becoming popular and as a result, the purchase of television cable dishes and other accessories are on the rise. Abandoned television satellite dishes continue to litter our environment due to obsolescence. Finding alternative use stands as a control measure for this inevitable environmental degradation. This paper, therefore, investigates the adaptation for low temperature solar thermal application. The TV satellite dish selected for this study has a diameter of 33.9 cm, depth of 9 cm and a focal point of 31.2 cm. The components added to the dish include; a reflective surface, pot stand, adjustable chain, dish support stand and base, control arm. This system was used in carrying out stagnation test on three different types of pots (aluminium, iron and stainless steel pots) positioned at the focal point. Other performance parameters studied include; standard stagnation temperature (SST) and the rate of change of pot temperature. The maximum stagnation temperatures attained by the inside of the iron, aluminium and stainless steel pots were 68, 80 and 82 °C respectively after 10, 13 and 40 minutes respectively; while their respective maximum SST were 100, 57 and 50 oC. The maximum temperature change inside the iron, aluminium and stainless steel pots were above 9, 12 and 10 oC/min. The result gathered shows that this system will be suitable for lower temperature applications like pasteurization, sterilization, household water heating, etc