bluuebunny/crossref_metadata_2025 huggingface dataset:
THE SYSTEM OF PUBLIC SOCIAL PROTECTION: PROBLEMS AND SOLUTIONS
Authors: Voronova Olena
Published: March 2017

The article deals with the problem of improving the mechanism and the creation of the tools for operational and strategic planning of social services for social protection. The reasons and disadvantages of the traditional social system of public state social services are defined. The author has attempted to form the automated resource management system, taking into account local peculiarities and to structure the social state and non-state institutions.
THE BASICS OF PROJECT ACTIVITY OF VOCATIONAL SCHOOL STUDENTS IN UKRAINE
Authors: Padalka Oleg , Tymenko Volodymyr , Kulishov Volodymyr
Published: March 2017

The article is devoted to the theoretical foundations of project technology of teaching and theways of its realization in vocational educational establishments. In particular,the author considers the content and goals of project activityof vocational school students, project types, methods of their implementation and evaluation and the role of the teacher in the organization of project activityin the process of vocational training.
PROBLEMS AND PROSPECTS OF DEVELOPMENT OF THE AUTOMOTIVE INDUSTRY IN UKRAINE
Authors: Dmitriiev Illia , Shevchenko Inna
Published: March 2017

The article identifies major problems of the development of the automotive industry in Ukraine in 2010-2015, such as: catastrophic decrease of the production volume of cars, trucks and buses; reduction of the production capacity of automotive industry enterprises; loss of the competitiveness of the domestic automakers on the national automobiles market; increase of the dependence of automakers from borrowed funds; prevailing unprofitability of automakers and bankruptcy of some of them. Nowadays the only way to preserve the Ukrainian automotive industry is an active state protectionism of the development of the automotive industry as a strategically important sector of the national economy.
THE SOCIAL AND ECONOMIC FACET OF A NETWORK ECONOMY
Authors: Kazibudzki Paweł
Published: March 2017

The paper discusses issues devoted to the social and economic facet of a network economy. It starts from a description of a crucial social and economic problem that troubles contemporary free market economies which is an unemployment issue. In a introductory section of the paper, some definitions and various approaches to unemployment are presented. Next some social and economic aspects of unemployment are discussed. Then some basic worldwide management philosophies are presented connected with primary patterns of existed job markets. Then a philosophy of a network economy is described as the one that may deal efficiently with some earlier outlined problems.
MECHANISMS OF ENVIRONMENTAL TAXATION IN TRANSITION GLOBALIZING ECONOMIES
Authors: Shergina Lidia , Zhemba Alla
Published: March 2017

The authors affirm that with the globalization of the world economy it is necessary to introduce the mechanism of environmentally sustainable economic functioning of the country. The article maintains that active use of environmental taxes must help to reduce the overall level of environmental pollution and increase production of environmentally clean products.
ONBOARDING NEW EMPLOYEES: REVIEW OF CURRENT PRACTICIES
Authors: Maksymiuk Hanna
Published: March 2017

New employees come in contact with an organization through onboarding programs. The author hasstudied strategic onboarding programs of world-known companies and recounted the most eye-catching features of them in the article such as suggesting newcomers money for not working at the company or meeting new employees with a bottle of wine. In conclusion, the author distinguishes some common features of successful onboarding programs.
MODELING OF THE PROCESS OF UPDATING TECHNICAL AND TECHNOLOGICAL BASIS OF INDUSTRIAL ENTERPRISES
Authors: Petrushka Tetiana , Koleshchuk Orest , Vysotskyi Artur
Published: March 2017

The work is dedicated to the issue of evaluation of economic efficiency and grounding of feasibility of technical and technological renovation of enterprises. The models to determine the time limit of updating technical and technological basis of industrial enterprises have been presented. The method of selecting the best technology to manufacture industrial products based on resource conservation has also been suggested.
FORMATION OF PUBLIC ACCOUNTING AND ANALYTICAL SUPPORT OF STRATEGIC MANAGEMENT OF INTEGRATED BUSINESS STRUCTURES
Authors: Kryshtopa Iryna
Published: March 2017

The articledealswith the problem of formation of accountingand analytical support of making strategic decisions concerning domestic integrated business structures. In particular, the author substantiated the necessity of preparingstrategic report by Ukrainian integrated businessstructures and proposed the way of structuring the information in this reporting form.
SMALL BUSINESS CLUSTERING AS A MEANS OF COMPETITIVENESS IMPROVEMENT
Authors: Khrapkina Valentyna , Gorova Yana
Published: March 2017

The article deals with the problem of formation and development of a small business cluster in Ukraine through the internal-territorial cooperation. The cluster efficiency is determined primarily by the competitiveness level of the products manufactured by small enterprises. Two clusters of a small business are built. A methodology was developed for the effective functioning of the cluster and the companies belonging to it.
INTERNATIONAL LEGAL REGULATION OF THE WORLD OCEAN PROTECTION FROM POLLUTION
Authors: Stets Oleg , Yamkovyi Vladyslav
Published: March 2017

The article is concerned with the scientific study of international cooperation aimed at preventing marine pollution and protecting it from contamination with legal support. The paper gives an analysis of international legal acts regulating the main directions of cooperation in the protection and preservation of the marine environment.
DEVELOPMENT OF LONG-TERM SUSTAINABILITY PROGRAMMES FOR UKRAINIAN MINING ENTERPRISES UNDER UNSTABLE ECONOMIC CONDITIONS
Authors: Temchenko Oleksandr , Temchenko Hanna
Published: March 2017

The article deals with developing long-term sustainability programmes as a means of ensuring the effective functioning of mining enterprises. The authors focus on specific problems of Ukrainian mining enterprises activity, substantiation of implementing environmentally sustainable natural resource management. The system of strategic factors for ensuring sustainable development of mining enterprises under unstable economic conditions has been formed.
GLOBALISATION PROCESSES IMPACT ON LATVIAN INSURANCE MARKET DEVELOPMENT
Authors: Volkova Jelena , Viskers Evalds
Published: March 2017

In globalization circumstances the economy of each country is viewed and evaluated not only individually, but also in global and regional context. It allows determining the level of development of a definite country in comparison with global, regional and other countries’ indices, its impact and contribution to the global economy, as well as it helps to detect global and regional impact on the economy of a definite country. The authors identified factors affecting the insurance industry, have analized the possibility of business environment to adapt and determined development potential of the Latvian market in context of globalization.
INSTRUMENTS FOR PROVIDING ECONOMIC SAFETY OF NATIONAL ECONOMY AT MESO LEVEL
Authors: Kirzhetskyy Yuriy , Zahoretska Olena , Kirzhetska Mariya
Published: March 2017

Instruments of economic safety at sector level have been generalized. The relationship between the level of industry economic safety and the level of state economic safety has beenanalysed with application of a synergetic approach.
CERTIFICATE COURSE "MODERN POLISH BUSINESS COMMUNICATION" IN KYIV NATIONAL ECONOMIC UNIVERSITY NAMED AFTER VADYM HETMAN
Authors: Bondаrchuk Lаrysа , Jermаk Łesiа , Podgurskа Tаmаrа
Published: March 2017

The paper presents the experiences and perspectives of studying the Polish language as a part of the certification course "Modern polish business communication" which is taught at Kyiv National Economic University for students and economists. The course aims at studing the practical use of Polish language in business, formation of cultural competence and awareness of the functioning of Polish language in business communication situations.
INTEGRATION OF ENVIRONMENTAL AND ENERGYSAVING EDUCATION IN SCHOOL TEACHING PROCESS
Authors: Volyk Alyona
Published: March 2017

Environmental education of children at primary and secondary school is the key to sustainable development. It is the formation of a systematic approach to the issue of environmental education that isable to prepare future generations to meet global challenges connected with changes in the environment caused by both natural disasters and those resulting from impacts of human activity.
PROBLEMS AND TENDENCIES OF DEVELOPMENT OF EDUCATION IN INFORMATION SOCIETY
Authors: Ramskyi Andrii , Ramskyi Yurii
Published: March 2017

The article deals with the problems and trends of the development of education in the information society. The paradigms of educational process formed in accordance with man-centric trends in the development of modern society are discussed.
UPGROWTH FEATURES OF MODERN WEB INTERFACES ON THE EXAMPLE OF RESPONSIVE DESIGN
Authors: Lukyanenko Kateryna , Sikora Dmytro
Published: March 2017

The article gives a definition of an adaptive design and reveals its basic principles. The importance and relevance of a responsive design at this stage are supported by the data from global statistical studies as well as visits statistics of Kryvyi Rih Economic Institute’s official Internet resource.
DISTINCTIVE FEATURES OF THE VIRTUAL CULTURE AND ISSUES OF INTEGRATION OF THE REAL IN MODERN LIFE
Authors: Batyuk Alim
Published: March 2017

The article analyzes the notions of «culture» and «virtual culture», considers the issue of the formation of modern culture and the impact of the World Wide Web on the process of forming a virtual space. The study also raises questions regarding the features of the virtual culture and the issues of integration of the real and the virtual into the modern culture.
THE CONCEPTUAL MODEL OF REGIONAL PARITY DEVELOPMENT OF UKRAINE WITHIN DECENTRALIZATION
Authors: Tomareva-Patlahova Victoria
Published: March 2017

The conceptual model of regional parity development in the context of decentralization is considered.It includes vision, goals, principles, priorities and mechanism for implementation of the state regional policy as the basis for the formation of a regional development strategy.The conceptual model allows achieving uniformity of economic development under conditions of decentralization and self-renewal of regions.
ESTIMATION MECHANISM OF ACTIVITY RESULTS OF HIGHER EDUCATION INSTITUTIONS OF DIFFERENT TYPES UNDER MODERN CONDITIONS
Authors: Bondarenko Tetiana , Volkov Dmytro
Published: March 2017

Estimation of education is gaining momentum with the entry of private institutions, change in people's attitude towards education and the changing scope for the different courses being offered. The education service can be described as a high contact, consumer and people based service.
THE SYSTEM OF MARKETING PLANNING AT THE ENTERPRISE AND ITS FORMATION PRINCIPLES
Authors: Korinyev Valentyn , Martynenko Dmytro
Published: March 2017

The article deals with the nature of marketing planning at the enterprise and its features. The authors study the methodical approach of marketing planning, taking into account the market situation at the domestic market. The authors offer the systematization of the formation principles of the marketing planning system at the enterprise.
THE BASIS OF COMPETITIVENESS OF ENTERPRISE PRODUCTS
Authors: Zavyalova Marina
Published: March 2017

The article deals with a systematic approach to the level of enterprise competitiveness, which is based on the results of comparative monitoring of competitors' products, analysis of the enterprise products and competitors. The author identifies the strengths and weaknesses of the enterprise products. This approach is aimed at achieving a high level of competitive advantage in a particular segment of the consumer market. It has contributed to achieving a high level of efficiency of marketing activity in the conditions of the specific market situation.
Network Coding-aware Lifetime Maximal routing in Multi-hop Static Wireless Ad-hoc Networks
Authors: Salim Rigil , Roy Rajarshi
Published: March 2017

In this paper, we address the issue of maximizing the lifetime of a static wireless ad-hoc network wherein the nodes are battery powered and have limited energy. In such scenarios, routing the traffic along shortest paths will lead to over-use of some nodes leading to premature network partition and an eventual end of communication. Network Coding is a promising technique that has been used, of late, by researchers for throughput improvement. We propose an algorithm that exploits network coding to route a set of unicast traffic demands, the objective being network lifetime maximization. The routing algorithm uses a link metric that takes care of the communication power consumption, the residual energy at the nodes and also the potential coding opportunities available at the node. Simulation results show that this algorithm enhances the network lifetime compared to the existing algorithms that do not employ network coding.
Error Resilient Video Streaming with BCH Code Protection in Wireless Sensor Networks
Authors: Petracca Matteo , Salvadori Claudio , Bocchino Stefano , Pagano Paolo
Published: March 2017

Video streaming in Wireless Sensor Networks (WSNs) is a promising and challenging application for enabling high-value services. In such a context, the reduced amount ofavailable bandwidth, as well as the low-computational power available for acquiring and processing video frames, imposes the transmission of low resolution images at a low frame rate. Considering the aforementioned limitations, the amount of information carried by each video frame must be considered of utmost importance and preserved, as much as possible, against network losses that could introduce possible artifacts in the reconstructed dynamics of the scene.In this paper we first evaluate the impact of the bit error rate on the quality of the received video stream in a real scenario, then we propose a forward error correction technique based on the use of BCH codes with the aim of preserving the video quality. The proposed technique, against already proposed techniques in the WSN research field, has been specially designed to maintain a full back-compatibility with the IEEE802.15.4 standard in order to create a suitable solution aiming at accomplishing the Internet of Things (IoT) vision. Performance results evaluated in terms of Peak Signal-to-Noise Ratio (PSNR) show that the proposed solution reaches a PSNR improvement of 4.16 dB with respect to an unprotected transmission, while requiring an additional overhead equal to 22.51% in number of transmitted bits, and minimal impact on frame rate reduction and energy consumption. When higher protection levels have been imposed, bigger PSNR values have been experienced at the cost of an increased additional overhead, lower frame rates, and bigger energy consumption values.
Impact of Uncertain Channel Estimation and Outdated Feedback on the Adaptive M-PSK Modulation
Authors: Ammari Mohamed L. , Gagnon Francois
Published: March 2017

This paper investigates an adaptive M-ary phaseshiftkeying (M-PSK) modulation scheme over Rayleigh flatfading channels. The data rate is adapted according to thechannel state. At the receiver, the fading is estimated using pilot symbols. To cancel the channel impact, we correct the received signal by dividing it by the estimated value of the fading. So, we propose to adjust the modulation level by examining the statistics of the corrected signal. In contrast to the previous works on the adaptive M-PSK modulation techniques, our modulation switching protocol takes into account the channel estimation error variance. Moreover, we derive a new closed-form expression for the average bit error rate of the considered system.
Study of the Readability of Passive UHF RFID Tags Placed Inside a Cargo Van by a Reader Located Outside
Authors: Mariage Philippe , Nguema M.M. Handeme , Clavier Laurent
Published: March 2017

The aim of this paper is to study the feasibility of getting information from a cargo van returning back on its storage area by using a low cost communication system. According to the low speed of the vehicle and to the involved short distances, a UHF RFID solution is considered. An experimental study shows that passive tags may be read successfully but not in the entire space of the van. A semi-empirical numerical method based on the Geometrical Optics is derived in order to build a fast computer aided-positioning tool that may help to optimize the location of the tags. The same software tool is used for carrying out a parametric study that informs on the best antenna system to use. It is find out that a solution using passive tags and two antennas limits the theoretical results to 90% successful reading percentage whereas using semi-passive tags ensures a 100% one in the whole space of the vehicle.
Conception and Validation of Smart Building Energy Management System BEMS Using the Discrete Event System Specification DEVS
Authors: Maatoug Abdelfettah , Belalem Ghalem
Published: March 2017

The improvement of the energetic behavior of buildings has turned into a major issue due to the high level of energy consumption. In this context, the building is represented as a dynamical system and a system of data acquisition is developed, which allows the measurement of environmental and energetic parameters, so as to describe the behavior of the building interacting with its direct environment. Research related to energy management can be divided into two categories: predictive control (anticipative) and adaptive control (reactive). A new building energy management system (BEMS) which is the chosen system to validate, treats a long-term anticipative control and introduces a reactive control that adds another level of intelligence to the BEMS.The main goal of this paper is to propose a model using the formalism DEVS to describe and simulate the BEMS. Our motivation is explained by the fact that DEVS is a tool for modeling of discrete event systems and it divides the overall system into subsystems in order to facilitate the achievement which is consistent with the characteristics of multilayer architecture of the chosen system.
Mesh Network for RFID and Electric Vehicle Monitoring in Smart Charging Infrastructure
Authors: Chung Ching-Yen , Shepelev Aleksey , Qiu Charlie , Chu Chi-Cheng , Gadh Rajit
Published: March 2017

With an increased number of plug-in electric vehicles (PEVs) on the roads, PEV charging infrastructure is gaining an ever-more important role in simultaneously meeting the needs of drivers and those of the local distribution grid. However, the current approach to charging is not well suited to scaling with the PEV market. If PEV adoption continues, charging infrastructure will have to overcome its current shortcomings such as unresponsiveness to grid constraints, low degree of autonomy, and high cost, in order to provide a seamless and configurable interface from the vehicle to the power grid. Among the tasks a charging station will have to accomplish will be PEV identification, charging authorization, dynamic monitoring, and charge control. These will have to be done with a minimum of involvement at a maximum of convenience for a user. The system proposed in this work allows charging stations to become more responsive to grid constraints and gain a degree of networked autonomy by automatically identifying and authorizing vehicles, along with monitoring and controlling all charging activities via an RFID mesh network consisting of charging stations and in-vehicle devices. The proposed system uses a ZigBee mesh network of in-vehicle monitoring devices which simultaneously serve as active RFID tags and remote sensors. The system outlined lays the groundwork for intelligent charge-scheduling by providing access to vehicle’s State of Charge (SOC) data as well as vehicle/driver IDs, allowing a custom charging schedule to be generated for a particular driver and PEV. The approach presented would allow PEV charging to be conducted effectively while observing grid constraints and meeting the needs of PEV drivers.
Implementation and Validation of a New Protocol Stack Architecture for Embedded Systems
Authors: Blasi Danilo , Mainetti Luca , Patrono Luigi , Stefanizzi Maria Laura
Published: March 2017

The worldwide spreading of Internet, in combination with the development of new low power and low cost embedded devices, has enabled the so-called Internet of Things vision. Wireless Sensor Networks represent an invaluable resource for realizing such scenario, inside which new and innovative applications could be developed. However, the low availability of resources and the reduced processing capacity of the target embedded platforms make the development of the next-generation applications very challenging. This paper proposes an innovative system architecture, called STarch, able to simplify the development of new applications and protocols for resource-constrained objects. It is meant to follow the software engineering principles and to support a wide range of applications, making both the programming easier and the code portable over multiple hardware platforms. STarch simplifies the network configuration process, through the use of an automatic mechanism based on the XML language and it runs properly on different operating systems, including FreeRTOS and Contiki. The feasibility of the proposed architecture has been proved by using a test bed approach, while an extensive performance analysis have been carried out in order to demonstrate its effectiveness in terms of memory requirements and processing delays.
Block-Type Pilot Arrangement with Alternating Polarity for ICI Mitigation in Mobile OFDM Systems
Authors: Suryani Titiek , Hendrantoro Gamantyo
Published: March 2017

Improvement on Inter Carrier Interference (ICI)mitigation techniques for OFDM caused by Doppler effectsthrough minimizing channel estimation error and decreasingchannel time varying rate is investigated. The performanceof pilot-aided channel estimation techniques depends on pilot placement and arrangement and also on the channel time varying rate. The block-type and comb-type pilot arrangements are studied through different numbers of guard bands, with or without the involvement of the Doppler shift compensation. The estimation of channel at mid-point of each OFDM symbol is derived from pilot frequencies based on the least square algorithm while the channel interpolation is done using piecewise linear approximation. For ICI mitigation technique we implement frequency domain zero forcing equalizer. We compare the performance of schemes with different pilot arrangementsand Doppler shift compensations by measuring bit error rate with QPSK as sub-channel modulation scheme and with mobileto-fixed of single ring scattering as channel model. The results are in favour of block-type pilot arrangements with alternating polarity and Doppler compensation of 0:55 times the maximum Doppler shift.
A dynamic update of the HWMP proactive tree for IEEE 802.11s based wireless mesh networks
Authors: Guesmia Mohamed , Guezouri Mustapha , Mbarek Nader
Published: March 2017

In this paper we propose a dynamic update of the HWMP (Hybrid Wireless Mesh Protocol) proactive tree by changing dynamically the path request (PREQ) transmission interval, instead of a periodic fixed value as defined in the IEEE 802.11s draft. Indeed, we adapt dynamically the value of the PREQ transmission interval according to the wireless environment characteristics and to the amount of traffic flows generated by applications within the considered environment. Thereby, we expect improving the routing table accuracy and minimizing the path recovery delays with less overhead for critical applications. Simulations results using Network Simulator 3 (NS-3) show that our proposed dynamic and non periodic PREQ transmission interval gives better results than a fixed periodic transmission interval value.
Performance Tuning of Dual-priority Delta Networks through Queuing Scheduling Disciplines
Authors: Vasiliadis Dimitris C. , Rizos George E. , Vassilaki Costas
Published: March 2017

Differentiated Services (DiffServ) and other scheduling strategies are now widespread in the traditional, “best effort” Internet. These Internet Architectures offer Quality of Service (QoS) guarantees for important customers at the same time as supporting less critical applications of lower priority. Strict priority queuing (PQ), weighted round robin (WRR), and class-based weighted fair queuing (CBWFQ) are three common scheduling disciplines for differentiation of services in telecommunication networks. In this paper, a comparative performance study of the above PQ, WRR and CBWFQ queuing scheduling policies applied on a double-buffered, 6-stage Multistage Interconnection Network (MIN) that natively supports a 2-class priority mechanism is presented and analyzed using simulation experiments. We also consider a 10-stage MIN, to validate that the conclusions drawn from the 6-stage MIN apply to MINs of different sizes. The findings of this paper can be used by MIN designers to optimally configure their networks.
A Framework for Highly Reconfigurable P2P Trackers
Authors: Sousa Pedro
Published: March 2017

The increasing use of Peer to Peer (P2P) applications,usually ruled by selfish behaviors, is posing new challengesto the research community. As contributions of this work we firstly devise a general framework underpinning the development of highly reconfigurable P2P trackers. Following that, a novel tracker architecture is proposed and several illustrative and enhanced tracker configurations are described. As result, the devised solution turns possible that flexible, programmable and adaptive peer selection mechanisms can be introduced at the P2P application level.The proposed solution assumes the general framework of one of the most popular P2P solutions, in this case a BitTorrent-like approach. As illustrative examples of the proposed framework capabilities, several straightforward and easy to deploy tracker configuration examples are presented, including methods for qualitative differentiation of swarm peers and advanced P2P Traffic Engineering mechanisms fostering the collaboration efforts between ISPs and P2P applications. Both the framework and the devised tracker configurations are validated resorting tosimulation experiments.
Non-Destructive Analysis of Surface Integrity on Parts from Austenitic Steel for Nuclear Industry
Authors: Holubják Jozef , Czán Andrej , Šajgalík Michal , Czánová Tatiana , Piešová Marianna , Varga Daniel
Published: March 2017

This article is focused on non-destructive detection method of residual stress and chemical properties of stainless steel. By X-ray diffractometry, there it is possible to determine accurately the values of residual stress and austenite percentage without any damage the sample without any change of its original function. Identification of residual stress and its distribution can improve the prediction of failures or damage incidences due to workload over lifetime of components. It can be also used as one of evaluation parameter of suitability of applied manufacturing technological operations.
Triaxial Measurement Method for Analysis of Residual Stress after High Feed Milling by X-Ray Diffraction
Authors: Czan Andrej , Zauskova Lucia , Sajgalik Michal , Drbul Mario
Published: March 2017

Surface integrity is a broad term which includes various quality factors affecting the functional properties of parts. Residual stress is one of these factors. Machining generates residual stresses in the surface and subsurface layers of the structural elements. X-ray diffractometry is a non-destructive method applicable for the measurement of residual stresses in surface and subsurface layers of components. The article is focused on the non-destructive progressive method of triaxial measurement of residual stress after machining the surface of sample by high feed milling technology. Significance of triaxial measuring is the capability of measuring in different angles so it is possible to acquire stress tensor containing normal and shear stress components acting in the spot of measuring, using a Cartesian coordinate system.
Identification of Tool Wear when Machining of Austenitic Steels and Titatium by Miniature Machining
Authors: Pilc Jozef , Kameník Roman , Varga Daniel , Martinček Juraj , Sadilek Marek
Published: March 2017

Application of miniature machining is currently rapidly increasing mainly in biomedical industry and machining of hard-to-machine materials. Machinability of materials with increased level of toughness depends on factors that are important in the final state of surface integrity. Because of this, it is necessary to achieve high precision (varying in microns) in miniature machining. If we want to guarantee machining high precision, it is necessary to analyse tool wear intensity in direct interaction with given machined materials. During long-term cutting process, different cutting wedge deformations occur, leading in most cases to a rapid wear and destruction of the cutting wedge. This article deal with experimental monitoring of tool wear intensity during miniature machining.
Verification of New Computing Method for Determining of the Roughness Parameters for Rotational Turning with Non-Linear Cutting Edge
Authors: Mrazik Jozef , Martikan Pavol , Czan Andrej , Holubjak Jozef , Varga Daniel , Martince Juraj , Czanova Tatiana
Published: March 2017

Technology of rotational turning is a progressive machining technology with a defined tool geometry, which has the potential to replace conventional finishing technologies using the tools with undefined geometry. This article deals with the influence of the cutting parameters on the surface roughness after machining and comparing the roughness parameters with the computed roughness. Since this is a new machining technology with new kinematic structure with atypical geometry of the cutting tool, the article is focused on the measurement methodology of the certain roughness parameters on machined surface after rotary turning with nonlinear cutting edge. Executed experimental tests and their evaluation are verified with the method of roughness parameters determination and results show, how the real process correlate with implementation of empirical relations.
Utilisation de la méthode des traçages pour l'étude des aquifères fissurés en milieu calcaire
Authors: Fourneaux Jean-Claude , Sommeria Laure
Published: March 2017

L'étude d'un aquifère en milieu calcaire par des traçages peut permettre de mettre en évidence une zone fissurée, avec ou sans chenaux de type karstique. A l'inverse de ce qui se passe lorsqu'on injecte dans une perte, c'est-à-dire en un point en relation directe avec un drain important, un traceur injecté en un point quelconque de l'aquifère (forage, puits, etc.), va subir une grande dispersion dans l'espace et dans le temps, favorisée par l'existence d'un important réseau de fissures. La courbe des concentrations en fonction du temps va permettre de distinguer l'existence des deux types de circulation, en chenaux ou dans les fissures. Les résultats présentés ici découlent de plusieurs opérations de multitraçage réalisées dans des formations calcaires tabulaires de France.
Le karst des Monts Padurea Craiului et le réseau Tinoasa-Ciur-Toplita de Rosia (Roumanie)
Authors: Badescu Doru
Published: March 2017

The karst of Padurea Craiului mountains and the system of Tinoasa-Ciur-Toplitza de Rosia (Romania)

Padurea Craiului mountains represent one of the most interesting karstic area of Romania. The existence of limestones affected by a lot of tectonics accidents had done this mountains to have distinct morphological aspects.

The relative developed hydrographie network, together with the geological structure and the favourable tectonic, brought about a lot of endokarstic and exokarstic phenomena too. This is very clear in Runcuri plateau which lodges the karstic systems Tinoasa-Ciur-Toplitza. The influence of the tectonic of this system is demonstrated by the underground observations about the fissures. The development of these systems, as well as the morphology of the caves, are influenced by the structure and texture of the different jurassic limestones.
Intérêt des recherches sur les karsts de Pologne
Authors: Maire Richard
Published: March 2017

Les karsts de Pologne ont fait l'objet de nombreuses publications, en particulier dans la revue «Kras i Speleologia», éditée par l'Université de Silésie, à Katowice. Concentrés dans la partie méridionale du pays (le Centre et le Nord étant couverts par les accumulations morainiques des glaciations continentales), ils sont d'une grande variété, tant par l'âge et la nature des sédiments dans lesquels ils sont développés, que par leurs particularités d'évolution (importance des phénomènes paléo-karstiques). Sous la direction de M. Pulina, nous avons pu étudier les trois ensembles principaux (fig. 1) :

- Karsts et paléokarsts des formations carbonatées mésozoïques de Haute Silésie et du «Jura» polonais (Haut plateau de Cracovie-Wielun).

- Karsts de moyenne montagne dans les marbres cambriens, dans le massif ancien des Sudètes,

- Karsts alpins dans les formations carbonatées mésozoïques de la Haute-Tatra.

Par contre nous n'avons pas pu visiter, faute de temps, les karsts du gypse ni ceux des diapirs salifères.
MIXED FOURIER-LEGENDRE SPECTRAL METHODS FOR THE MULTIPLE SOLUTIONS OF THE SCHRODINGER EQUATION ON THE UNIT DISK
Authors: Li Zhao-Xiang , Lao Ji , Wang Zhong-Qing
Published: March 2017

In this paper, we first compute the multiple non-trivial solutions of the Schrodinger equation on a unit disk, by using the Liapunov-Schmidt reduction and symmetry-breaking bifurcation theory, combined with the mixed Fourier-Legendre spectral and pseudospectral methods. After that, we propose the extended systems, which can detect the symmetry-breaking bifurcation points on the branch of the O(2) symmetric positive solutions. We also compute the multiple positive solutions with various symmetries of the Schrodinger equation by the branch switching method based on the Liapunov-Schmidt reduction. Finally, the bifurcation diagrams are constructed, showing the symmetry/peak breaking phenomena of the Schr¨odinger equation. Numerical results demonstrate the effectiveness of these approaches.
DISCREPANCY SETS FOR COMBINED LEAST SQUARES PROJECTION AND TIKHONOV REGULARIZATION
Authors: Reginska Teresa
Published: March 2017

To solve a linear ill-posed problem, a combination of the finite dimensional least squares projection method and the Tikhonov regularization is considered. The dimension of the projection is treated as the second parameter of regularization. A two-parameter discrepancy principle defines a discrepancy set for any data error bound. The aim of the paper is to describe this set and to indicate its subset such that for regularization parameters from this subset the related regularized solution has the same order of accuracy as the Tikhonov regularization with the standard discrepancy principle but without any discretization.
GREEN’S MATRICES FOR FIRST ORDER DIFFERENTIAL SYSTEMS WITH NONLOCAL CONDITIONS∗
Authors: Paukštaitė Gailė , Štikonas Artūras
Published: March 2017

In this paper, we investigate the linear system of first order ordinary differential equations with nonlocal conditions. Green’s matrices, their explicit representations and properties are considered as well. We present the relation between the Green’s matrix for the system and the Green’s function for the differential equation. Several examples are also given.
GLOBAL EXISTENCE AND BLOW-UP FOR A CHEMOTAXIS SYSTEM
Authors: Chen Xueyong , Hu Fuxing , Zhang Jianhua , Shen Jianwei
Published: March 2017

In this paper we consider a Keller-Segel-type chemotaxis model with reaction term under no-flux boundary conditions, where the kinetics term of the system is power function. Assuming some growth conditions, the existence of bounded global strong solution to the parabolic-parabolic system is given. We also give the numerical test and find out that there exists a threshold. When the power frequency greater than the threshold, both global solution and blow-up solution exist.
Organisations en mouvements : présupposés et théorisations. Lorsque les organisations et les institutions prétendent à l’écoresponsabilité
Authors: Bernard Françoise
Published: March 2017

L’auteure questionne un ensemble de présupposés et de notions dans des cadres théoriques différents qui permettent de comprendre et d’analyser les questions du changement. Le changement est abordé du point de vue des processus psychosociaux, de symbolisation, mais aussi par les actes. Le domaine des pratiques organisationnelles et sociétales choisi est celui de l’environnement et de la transition écologique. La dimension interdisciplinaire est présente dans l’exercice de réflexivité proposé.
Le développement personnel dans les organisations : entre modernité et post-modernité
Authors: Imhoff Camille , Silva François
Published: March 2017

Nous assistons à des transformations majeures dans les entreprises, à l’évidence d’ordre technologique, mais aussi culturel. Il s’agit d’un changement de paradigme, en rupture avec les valeurs de la modernité. Une place centrale est désormais donnée, au moins dans les intentions et dans les discours, aux relations entre les personnes. Le « développement personnel » peut participer au passage des logiques de processus et de compétences individuelles à celles d’interaction et de régulation entre les personnes. Pour cela, il faut le distinguer d’une forme de développement strictement individuel qui ne correspond pas aux besoins des nouvelles formes d’organisation du travail.
Comparison of Ability of Platelet-rich Fibrin vs CollaPlug in maintaining the Buccal Bone Height of Sockets following Extractions in 20 Patients
Authors: Singh Madhumati , Madhan G
Published: March 2017

Introduction

The preservation of bone volume immediately after tooth removal is necessary to optimize the success of implant placement in terms of esthetics and function. The objectives of this study were to compare the ability of Choukroun's platelet-rich fibrin (PRF) versus CollaPlug (Zimmer) in maintaining the buccal bone height of sockets following extractions in patients.

Materials and methods

Twenty patients who required tooth extraction and implant placement were enrolled in this study. The patients were randomly divided into two groups. They are group I PRF group and group II CollaPlug group. The vertical buccal crestal bone heights were measured immediately after extraction and 4 months postextraction and implants were placed.

Results

The buccal crestal bone level in the CollaPlug group had a baseline mean of 4.67 ± 0.54 and a postmean of 6.98 ± 0.60, whereas in the PRF group baseline mean was 5.43 ± 0.47 and postmean was 6.93 ± 0.55. The bone resorption was found in both the groups (2.31 mm for CollaPlug and 1.5 mm for PRF), in agreement with previous studies. However, there was increased bone loss in CollaPlug group compared with PRF group, which was found statistically significant.

Conclusion

In conclusion, within the limits of the present study, the two tested socket preservation materials seem to be effective in the treatment of extraction sockets, even though the design of the study did not allow us to evaluate to what extent the clinical improvement could be attributed to the PRFper se, since a negative control was not included in this investigation. However, preparation of PRF is not very cumbersome and inexpensive, which makes it a better socket preservation material than CollaPlug.

How to cite this article

Madhan G, Singh M. Comparison of Ability of Platelet-rich Fibrin vs CollaPlug in maintaining the Buccal Bone Height of Sockets following Extractions in 20 Patients. J Health Sci Res 2017;8(1):1-6.
Comparative Evaluation of the Effect of Two Desensitizing Dentifrices containing Novamin Technology and Pro-Argin Technology following Scaling and Root Planing
Authors: Vazhakkat, Pooja R , Shobha KS
Published: March 2017

Aim

To compare the desensitizing efficacy of two commercially available dentifrices, one containing Novamin technology (calcium sodium phosphosilicate, a bioactive glass) and the other containing Pro-Argin technology (arginine and calcium carbonate) when applied after scaling and root planing.

Materials and methods

About 30 subjects having at least two sensitive teeth (total 60 sites) after scaling and root planing were included in this study and randomly divided into two groups, each containing 15 patients: Group I received Pro-Argin technology (arginine and calcium carbonate) and group II received Novamin technology (calcium sodium phosphosilicate, a bioactive glass) containing desensitizing toothpaste. The sensitive teeth were selected on the basis of Schiff cold air sensitivity scale (SCASS) with an air blast hypersensitivity score of 2 or 3 and cold water test with visual analog scale (VAS) score of 4 to 10 responses. The subjects’ response was recorded at baseline (i.e., immediately after treatment) and after 1, 2, and 4 weeks respectively, using the SCASS and VAS scale.

Results

Using Mann–Whitney test, we found no statistically significant differences in the score between the two desensitizing toothpastes. But, there was a statistically significant difference between the baseline and follow-up scores done consecutively for individual toothpastes.

Conclusion

Therefore, within the limitations of the study, we found no statistically significant difference in the efficacy of the two desensitizing toothpastes.

How to cite this article

Vazhakkat PR, Shobha KS. Comparative Evaluation of the Effect of Two Desensitizing Dentifrices containing Novamin Technology and Pro-Argin Technology following Scaling and Root Planing. J Health Sci Res 2017;8(1):7-14.
An in vitro Study to evaluate the Effects of Various Polymerizing Conditions on the Flexural Strength of Autopolymerizing Resins
Authors: Singh, Sanjeev , Hussain, Abid Z , Thombare, RU , Motwani, BK , Singh, Shweta
Published: March 2017

Aim

To investigate the effect of variation in temperature and time intervals on the flexural strength of two brands of autopolymerizing resins polymerized at constant pressure.

Materials and methods

Two autopolymerizing resins RR Cold Cure resin (DPI) and RR-Rapid Repair Powder (Dentsply) were used. A total of 20 samples were fabricated for each group. Samples were polymerized at temperature ranges of 40°, 50°, 60°, and 70°C and at time intervals of 5, 10, and 15 minutes in the customized curing pot, maintaining pressure of 30 psi.

Results

Flexural strength was verified using universal testing machine using three-point bending test and was then compared with all samples and also with the samples cured in open air (control group). The samples cured at higher temperature, i.e., 60° and 70°C, have shown increased strength than those at 40° and 50°C as well as control group. Time interval of 10 minutes is considered sufficient to increase the strength of the resin, as per the results of this study.

Conclusion

The samples cured under varied condition of time and temperature but under constant pressure showed increased strength than those cured in open air.

Clinical significance

The effect of pressure and temperature has been demonstrated, which could be utilized for enhancing the durability of the prosthesis fabricated from autopolymerized resins.

How to cite this article

Singh S, Hussain AZ, Thombare RU, Motwani BK, Singh S, Mangalekar SB. An in vitro Study to evaluate the Effects of Various Polymerizing Conditions on the Flexural Strength of Autopolymerizing Resins. J Health Sci Res 2017;8(1):15-19.
Assessment of Efficacy of Different Teaching Methods of Tooth Brushing on Oral Hygiene Status in Adults
Authors: Chatterjee Anirban , Asif, Mohammed , KS, Shobha
Published: March 2017

Introduction

Tooth brushing plays a vital role in effective plaque control, which depends on the effectiveness of the particular method and the ease with which the procedure is carried out. Hence, the aim of this study was to assess the effect of different teaching methods of tooth brushing on oral hygiene status in adults.

Materials and methods

Eighty subjects were divided into four groups, each with 20 and assigned to different training methods. Twenty subjects were in control group and the rest in the experimental group. Each experimental group was further subdivided into two groups, namely reinforcers and nonreinforcers, with 10 subjects in each group. The plaque scores of these subjects were measured before and 1 week after the training sessions. The data analysis was carried out using the Statistical Package for the Social Sciences (SPSS) 20.0 and two-way analysis of variance (ANOVA).

Results

There was significant reduction in the plaque scores due to different training methods (f = 12.218, p < 0.05). Maximum reduction was seen in the instruction on cast method. There was significant difference in the plaque scores in the reinforcers and nonreinforcers (f = 4.897, p < 0.05). A small survey conducted among participants revealed that individual as a model was an easy method to learn brushing.

Conclusion

The instruction on cast method was effective in reducing the plaque scores compared with the other methods.

How to cite this article

Asif M, Shobha KS, Chatterjee A. Assessment of Efficacy of Different Teaching Methods of Tooth Brushing on Oral Hygiene Status in Adults. J Health Sci Res 2017;8(1):25-30.
A Case of Hand-Foot-Mouth Disease observed during Routine Dental Checkup in an Immunocompetent Healthy Adult Patient
Authors: Devadoss, Poorna , Ramesh, Skanda , Christopher, Pradeep , Velusamy Anbu
Published: March 2017

Signs of oral lesions are one of the initial indications for many major diseases. As we come across different lesions during routine dental checkups, we should be aware about the diseases associated with those lesions. A 47-year-old immunocompetent adult patient reported with small erythematous lesions in the hard palate and small ulcers in the tonsillar pillars and right buccal mucosa with mild pyrexia of 37.8°C. Maculopapular lesions were found on the palms and soles. He was diagnosed with hand-foot-mouth disease, which is caused by the following viruses: Enterovirus-71, Coxsackie Virus (CV)-16, CV-A6, and CV-A10. The severity of this condition leads to meningitis, paralytic polio, and onychomadesis (falling of nails).

How to cite this article

Devadoss P, Ramesh S, Christopher P, Velusamy A. A Case of Hand-Foot-Mouth Disease observed during Routine Dental Checkup in an Immunocompetent Healthy Adult Patient. J Health Sci Res 2017;8(1):42-45.
Tasks Currently Faced by Yogo Teachers in Japan
Authors: Iwasaki Kazuko , Watanabe Toshiyuki
Published: March 2017

The Yogo Teacher in Japan is equivalent to the role of school nurse in the US. The purpose of the research is to clarify the duties facing school nurse teachers working in elementary schools in Japan, the knowledge and skills required for coping with them, and their training needs. We surveyed 536 nursing teachers nationwide. 1) Job difficulties confronted by Yogo Teachers include collaboration (19.2%), which includes collaboration at the school and with family members. 2) The knowledge and skills necessary for Yogo Teachers included Self-Education Ability (24.3%), and mainly required communication skills and coordination ability. 3) In training needs, Psychology and Psychiatry (22.0%) were uppermost, and improvement of counseling skills and ability was required. It is important to build a system that enables Yogo Teachers to educate themselves in collaboration techniques and theories, and to practice supervision by mental health specialists.