Litteris et Artibus. – 2016 р.

Permanent URI for this collectionhttps://ena.lpnu.ua/handle/ntb/40236

Proceedings of the 6th International youth science forum, November 24–26, 2016, Lviv, Ukraine

У збірнику опубліковано матеріали наукового форуму, присвяченого проблемам у галузі комп’ютерних наук та інженерії, інформаційних технологій; геодезії, архітектури та будівництва; енергетики та систем керування; гуманітарних та соціальних наук; машинобудування, матеріалознавства, транспорту; економіки та менеджменту; хімії та хімічних технологій; права та психології; екології, природоохоронної діяльності та туризму. Видання призначено для науковців, аспірантів, студентів.

Litteris et Artibus : proceedings of the 6th International youth science forum, November 24–26, 2016, Lviv, Ukraine / Lviv Polytechnic National University. – Lviv : Lviv Polytechnic Publishing House, 2016. – CD-ROM. – 507 p.

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Trends of the future logistics in e-commerce
(Lviv Polytechnic Publishing House, 2016) Freyuk, Olga; Kyiv National Universty of Trade and Economics
In the background of changing situation on local and global markets of delivery and sales companies more often use the Internet tools, letting realization of electronic transactions with partners in supply chain. Changes in management of supply chain happen with development of clients’ needs and technological possibilities of cooperating partners. Ecommerce is growing, but logistics seem to stay behind. In the past, innovations mainly focused on the opportunities in the area of home delivery. What the market really needs now are alternative delivery options.
The operation mode of single-stage current transformer with open secondary circuit
(Lviv Polytechnic Publishing House, 2016) Ferensovych, Roman; Lviv Polytechnic National University
The operation mode of current transformer with open secondary circuit is emergency and is accompanied by the appearance on the terminals of its secondary winding overvoltages, which are dangerous for secondary equipment and attending personnel. In the paper analysis of operation mode of single-stage current transformer type TV-35 (ТВ-35) after disconnection of its secondary circuit is carried out. The influence of active losses in magnetic core of current transformer TV-35 (ТВ-35) on the values of its secondary overvoltages is investigated.
Combined thick-film structures based on modified nanoceramics for sensor electronics
(Lviv Polytechnic Publishing House, 2016) Klym, Halyna; Kostiv, Yuriy; Lviv Polytechnic National University
Combined temperature and humidity sensitive thick-film structures based on technological modified nanostructured ceramics (Cu0.1Ni0.1Co1.6Mn1.2O4 with p+-type of electrical conductivity, Cu0.1Ni0.8Co0.2Mn1.9O4 with p-type of electrical conductivity and magnesium aluminate i-type MgO-Al2O3), as well as temperature-sensitive p-p+ and p-p+-p structures were prepared and studied. It is shown that increasing of the quantity of thick-film layers results in the improvement of the temperature sensitivity of thick-film structures. Humidity-sensitive thick films with temperature-sensitive films as conductive layers posses linear dependence of electrical resistance on relative humidity with hysteresis in the range of 30-95 %.
Comparative evaluation of transporting cargo by road and rail between Lviv and Kharkiv
(Lviv Polytechnic Publishing House, 2016) Roslavtsev, Dmytro; Olkhova, Maria; O. M. Beketov National University of Urban Economy in Kharkiv
The current economic downturn in Ukraine, which led to a significant increase in costs, including transportation, made it necessary to revise approaches to the organization of the transport process. This paper presents a comparative evaluation of the transportation costs for packaged goods shipping by road and rail in 2013 and 2016. It was revealed that transporting cargo by rail is the most profitable in present market conditions in comparison with road transport, but it is necessary to take into account a number of rail shortcomings including transportation time, rail sidings of consigner and consignee and cargo safety.
Modification of polypropylene melt-blown fibers by photopolimeryzation of acrylic acid
(Lviv Polytechnic Publishing House, 2016) Werner, Łukasz; Jackiewicz-Zagórska, Anna; Warsaw University of Technology
The main objective of this study was to find the method of polymer fibrous filter modification which cause the increase in the oil droplets filtration efficiency. An attempt was made to affect on the fibers wettability, by changing among others the surface roughness. The tested filters were made of polypropylene using the melt-blown technique. They were modified via photopolymerization - UV irradiation, together with the monomers Acrylic acid (AA). Modified materials were tested by high quality test bench for measuring filtration efficiency of nanodroplets.
Sustainable development: socio-economic optimization for the innovation systems
(Lviv Polytechnic Publishing House, 2016) Golovko, Liliya; Regional Communal Higher Education Establishment „Strategy” Institute for Entrepreneurship
Author shown the model of the structural transformation on the basis of the empirical analysis. Its focus is not only on methods of promoting sustainable development and structural change but also on improving the potential for the mass of the population, for example, through health and education and workplace conditions, whether through public or private channels. The result of researches is the identifying of some points of the developing countries and of the countries with economical transformations. Investigation is the peculiarities of structural changes and patterns for sustainable development. The purpose of the current research is to measure and analyze the key points for increasing the efficiency of the economical system development in Ukraine. A research objective is to identify the economic and institutional grounds for sustainable development.
Approaches for analysing activity efficiency of insurance companies
(Lviv Polytechnic Publishing House, 2016) Heleta, Roman; Didukh, Oksana; Lviv Polytechnic National University
This paper for proceeding contains research about main approaches for defining and analyzing the term “efficiency”. There are submitted opinions of foreign and domestic economic scientist about calculation of this term. Also there is shown main indicators, which characterize efficiency of insurance companies, in particular profitability of insurers. Main indicators of profitability were submitted.
Research possibility of the previous cleanig of filtrates at Lviv landfill by an aeration method
(Lviv Polytechnic Publishing House, 2016) Sliusar, Vira; Sereda, Andriy; Malovanyy, Myroslav; Lviv Polytechnic National University
From this work are defined risk of filtrates from solid waste landfills. The experimental study the effectiveness of the cleaning process filtrate landfill solid waste by aeration.
Calculated model for determining the subcritical growth period of corrosion-mechanical crack in plate under long-term static and time concentrated quasi-dynamic loadings
(Lviv Polytechnic Publishing House, 2016) Shtoyko, Ivan; Karpenko Physico-Mechanical Institute of the NAS of Ukraine
The calculation model for determining of residual durability of plate with straight corrosion-mechanical crack under long-term static tension and multiple time concentrated quasi-dynamic load is proposed. The model based on the energy approach for a study of delayed crack growth, models of pulsed load applying and the main mechanisms of corrosion-mechanical crack propagation. Based on this model, the dependence of residual life of the plate of X60 pipeline steel on a number of time concentrated quasi-dynamic loadings is investigated.
The main directions of the use of the Internet resources in the social and humanitarian studies
(Lviv Polytechnic Publishing House, 2016) Hymytsia, Nataliya; Derkachova, Tetyana; Lviv Polytechnic National University
The importance of the social and humanitarian cognition for the solution of the topical issues of the information society was determined. The main directions of the use of the Internet resources in the social and humanitarian studies were justified.
Comparative analysis of Ukrainian and international educational projects
(Lviv Polytechnic Publishing House, 2016) Bohun, Valeriya; Onyshkevych, Oleksandra; Lviv Polytechnic National University
The cause of the problem is that under conditions of globalization the education is a highly productive form of the capital investment likewise the important social guarantee.
Research of influence of wind on water jets while watering lawns
(Lviv Polytechnic Publishing House, 2016) Orel, Vadym; Potsiurko, Natalia; Lviv Polytechnic National University
The effect of wind action to water jets during watering lawns has been analyzed. Experimental equipment has been modernized to investigate the influence of wind velocity. Appropriate methodology has been suggested.
Bulk metal matrix composite materials with nanoscale fillers
(Lviv Polytechnic Publishing House, 2016) Shcheretskyi, Volodymyr; Zatulovskyi, Andriy; Phisico-technological institute of metals and alloys of NAS of Ukraine
Arming of metal alloys by high strength refractory particles is one of the most common methods for wear resistant, tribological or mechanical properties improving, such materials is called – metal matrix composites. Nanoparticles via mutual contact tend to be agglomerated; they become stable only at micro sizes. Thermo-chemical and mechanical fixation of nanoparticles on the surface of metal powder particles forms micro-nano granules. Such combined micro-nano objects have numerous advantages that allow consolidating them in bulk composite material by extrusion or impregnation methods. Thereby combining foundry and powder approaches, copper and aluminum based composite materials were obtained with uniformly distributed up to 3 weight % of nanoscale components.
Ecological and economic foundations of air protection in the industrial city of Dnipropetrovsk region
(Lviv Polytechnic Publishing House, 2016) Tymoshenko, Lyubov; Us, Oleksandra; SHEE «National Mining University»
Based on statistical data of economic and ecological indicators in industrial cities of the Dnipropetrovsk region the dynamics of state of the air and its quality was estimated using the statistical methods and methods of decisions making in conditions of uncertainty. The interrelation between pollution levels and some economic factors was examined. The necessity of strengthening the economic levers at the municipal level in the field of ecological state of air quality in an industrial city was proved.
Preparation of nanostructural dextran-based carrier particles for drug delivery to the lungs
(Lviv Polytechnic Publishing House, 2016) Jabłczyńska, Katarzyna; Widyńska, Ewelina; Sosnowski, Tomasz R.; Warsaw University of Technology
Particle engineering can be used to design inhalation drug carrier that will combine advantages of nano- and microparticles. This work present a review of research on dextran-based nanostructural powder prepared using the spray drying method. The shape of powder particles is shown to depend on the applied drying process parameters and additives used. It was proved that surface morphology of particles strongly affects powder aerosolization performance. Tested powders demonstrated a good restoration of the initial nanoparticles size distribution after rehydration. All these features allow to consider dextran-based nanostructural particles as new attractive carriers for drug delivery to the lungs.
Gender stereotypes in Turkish soap operas
(Lviv Polytechnic Publishing House, 2016) Kiran, Elif; Namık Kemal University
This study focuses on the effect of soap operas on the construction and continuation of gender stereotypical images of woman. To this aim, a general framework of gender stereotypes and their relation with mass media is drawn and in the following part, two famous series on Turkish TV channels is analyzed in terms of gender stereotypical roles of the female characters in these series.
Time complexity of multipliers for Galois fields
(Lviv Polytechnic Publishing House, 2016) Rahma, Mohammed Kadhim; Hlukhov, Valeriy S.; Lviv Polytechnic National University
Multipliers for binary Galois field GF (2n) hardware complexity allows to implement in FPGA an operational device with multiple multipliers. But because of large structural complexity for some combinations of large degrees n of field and the multipliers number to make it is practically impossible. One of the possible choices of this problem solving is the move to using Galois fields with the base d, greater than 2. Multipliers for such extended Galois field GF (dm) with approximately the same number of elements dm  2n are estimated in the article in terms of their time complexity to determine the fields in which the multiplier will have the least time complexity.
Statistical comparison of the ratios of households with central heating between Tunceli province and Elazığ, Erzincan and Bingöl provinces
(Lviv Polytechnic Publishing House, 2016) Dal, Murat; Engineering Faculty Munzur University
In this study, Turkey's Statistical Institute’s (TUIK) 2011 data showing the number of households with central heating in Tunceli, Bingol, Erzincan and Elazığ was utilized. In a binary comparison of the values showing the ratios of households with central heating in Tunceli province by the close provinces and determining statistically the relative differences, binomial test analysis which is a non-parametric test method was utilized. The ratio of households with central heating in the Tunceli province (20.8%) showed statistically similar ratios (p> 0.05) with the Bingol (28%) and Erzincan (23.6%) provinces, but compared to Elazıg provinces(%35,5), it is construed as having relatively lower values (p <0.05). In light of this information, assuming the proportion of households with central heating as a development indicator, it is noteworthy that based on this parameter Tunceli is at a similar level with Bingöl and Erzincan provinces, but is behind the Elazig province.
Factographic data multidimensional search models
(Lviv Polytechnic Publishing House, 2016) Tertyshnyi, V.; Kremenchuk Mykhailo Ostohradskyi National University
The investigation objective is to simplify factographic data multidimensional search process by modifying latent-semantic analysis models and a corresponding logical linguistic model. Formal multidimensional semantic space model was created, the types of logical connections that can be used for a multidimensional factographic search were identified. Indicators and metrics for context clustering were chosen. Logical linguistic model for factographic data identification was formed.
Means of computerized analysis for detection of program code appropriation
(Lviv Polytechnic Publishing House, 2016) Mohyliak, Taras; Lviv Polytechnic National University
Plagiarism is a common problem for educational institutions. Since it is difficult to detect plagiarized work manually, there is a need of an efficient computerized system, which can detect a theft of program code. For academic purposes, the best results usually give algorithms, based on tokens comparison. However, they can give false positive results in cases of similar code structure, despite having different domain and purpose. We propose to introduce weighting coefficients for tokens and calculate code similarity percentage using those coefficients. Our experiment study should confirm the quality improvement of software plagiarism detection.