The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Optimization of biodiesel production from non-edible Carica papaya seed oil was experimentally investigated in this study. Biodiesel production process parameters such as methanol: oil molar ratio, catalyst type and their concentrations, reaction temperature and reaction time were evaluated. It was found that the optimum process parameters for transesterification of the Carica papaya seed oil at an...
Supplying electrical energy to the load on demand, economically and with acceptable levels of reliability and service quality is the main task of a distribution system. Energy distribution reliability is important in the competition conditions in electricity markets because consumers directly supply energy. Therefore, it is not enough to estimate how reliable the distribution system is at present...
Socio-economic characteristics of the systems crisis which was brought about to Russia during the reforms period and was caused by implementing “shock therapy” are examined. Its main negative and positive consequences for the country are noted and the most important reasons for it are systematized. They include both conducting reforms on the basis of “Washington Consensus” provisions and ignoring...
The paper introduces the research of tube-type bottle defects detection algorithm based on machine vision system, and the implementation method of detection system using machine vision and digital image processing technology. Industrial camera is used to collect the image of tube-type bottle, then the image is processed and analyzed by image processing technology. On this basis, by comparing with...
The design of electrical systems with renewable and conventional in-house generation involves economic, environmental and technical aspects. Often these instances are conflicting: conventional sources have lower Capex and good controllability, while renewable sources have lower Opex and are environmentally friendly but often present erratic behaviors. For these reasons, the best design solution is...
Gain standards for accurate antenna measurements are expensive due to their extensive calibration procedure. This paper presents a concept for low cost antennas that comprise of sheets of FR-4 which are accurately manufactured using modern CNC technology. This accuracy in turn will render the calibration procedures unnecessary. The impact of tolerances is studied to determine whether the concept is...
The article presents core information about National Classification of Economic Activities, National Classification of Product by Economic Activities, National classification of fixed assets. The description of problems and their solutions is presented.
A simple, cost effective, lightweight, and fully integrated AESA Multipack (Multichannel T/R-Module) has been developed by using a standard multilayer RF PCB. The design includes Radiating Elements, T/R-Modules and RF distribution networks on one single PCB. The structures have been concentrated, such that the Multipack comprises a highly integrated topology. The production costs are kept significantly...
The characteristics of four mainstream protocols including Ethernet/IP, Profinet, EtherCAT and Ethernet Powerlink in industrial field network are analyzed respectively in the paper. According to the different requirements of the on-site production line level control system and the internal network of the automation equipment, it is significant to adopt the appropriate network protocol. In the on-site...
Maintenance for a fleet of aircraft can be viewed from a systems engineering perspective. Not only are the aircraft complex systems, the logistics of maintaining airworthy systems depend on resources such as technicians, parts, and support equipment. Support equipment which falls under the Test, Measurement, and Diagnostic Equipment (TMDE) category requires periodic calibration. The calibration process...
In the paper, existence and coalitional stability problems for Walras equilibrium in the models of multiregional economic systems are considered. Here, we continue investigations on extremal characterization of equilibrium allocations in non-classic market being a modification of the well-known Arrow-Debreu model. It is shown that strict autarchy and non-satiation conditions guarantee coincidence...
The state-of-the art education system should be in time for the knowledge-intensive technologies, that are developing with a high pace and be as mobile and effective as possible. The development of science-intensive technologies is developing with a tremendous pace, so the knowledge obtained in the university is quickly becoming obsolete, therefore the modernization of equipment should go in synchronism...
The step in cost savings separating low (LV) and medium voltage (MV) drive application has steadily decreased over the last two decades. In addition to the more economical use of MV drives in certain applications, there are compelling technical advantages, and increased reliability is also often realized. This can equate to a decreased total cost of ownership and should be explored when applying drives...
Clinical practice guidelines have proven to be a powerful means for improving and standardizing healthcare assistance and patient outcome. Despite the recent increase in their diffusion and the advances made towards their automation, most clinicians do not use guidelines at the point of care in their daily practice. Indeed, clinical decision support systems are often retrospective and complicated...
This article presents the weighted data features of the standard deviational curve (SDC). Similar data features exist for the standard deviational ellipse (SDE). This paper presents weighted data features for the SDC which include the angle of rotation, the minimum and maximum standard deviation, the area, and the circulatory index. Performed correctly, weighted features give a better use of the areal...
We use the Hierarchical and Distributed Cognitive Radio Architecture Management (HDCRAM) inherited form cognitive radio as a generic framework for smart grid management. This architecture is an efficient tool which can be used for the design of decision making algorithms in complex systems. We apply this architecture on the smart grid and we identify both intelligent entities and communication networks...
This paper presents a chaotic particle swarm optimization algorithm with random weights to improve the balancing of a LCD panel assembly line considering the coordination of operation elements. Based on the analysis of the constraints, the performance criteria considered are the line balancing rate and the variation of workload. The results of experiments show that the proposed model produced as good...
This paper reports the experience of applying agile methods in the defense sector, characterized mostly by embedded and mission critical software. We describe the experience of creating a Command and Control system for the 4th Logistic Department of the Italian Army's General Staff. The project was approved by the Army as a pilot to determine whether it could be possible to reduce development costs...
Municipal waste management has a great impact on the sustainability of human processes and green policies, especially in urban sites. Although it could be achieved the full separation of the reusable and recyclable items and the complete elimination of the organic material present in it, many waste components must still be processed in waste treatment facilities. Accordingly, since the 90s, in Spain,...
A cyclic proof system, called CLKID-omega, gives us another way of representing inductive definitions and efficient proof search. The 2011 paper by Brotherston and Simpson showed that the provability of CLKID-omega includes the provability of the classical system of Martin-Lof's inductive definitions, called LKID, and conjectured the equivalence. By this year the equivalence has been left an open...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.