bluuebunny/crossref_metadata_2025 huggingface dataset:
Acoustics Oribotics
Authors: Ismail Mostafa Refat A. , Eldaly Hazem
Published: December 2014

There is a great demand in multipurpose elements design for use adaptation. This in turn requires great flexibility in design strategies, as well as a wider spectrum of space settings to achieve the required environment that special activities imply. Acoustics is an essential factor influencing cognitive acts and behavior as well as on the extreme end the physical wellbeing inside a space. The complexity of this constrain is fueled up by the extended geometric dimensions of multipurpose halls, making acoustic adequateness a great concern, that could not easily be achieved for each purpose. To achieve a performance oriented acoustic environment, various parametric shaped false ceilings based on origami folded notion are simulated. These parigamic shapes are able to fold and unfold forming an oribotic structure, and changing the mutual acoustic environment according to the geometric shapes position and its changing exposed surface areas. The mobility of the facets in the parigamic surface can stretch up the range from a complete plain surface to an unfolded element where a considerable amount of absorption is added to the space. The behavior of the parigamic shapes are being modeled employing a ray tracing computer simulation package for various shapes topology. Results revealed a divergence of results that is caused by the folded facets to shorten the mean free path thus introducing more reflections and consequently quicker decay curves.
Data Mining Approach to Decision Support in Social Welfare
Authors: Anderson Ricardo , Mansingh Gunjan
Published: December 2014

Knowledge discovery and data-mining techniques have the potential to provide insights into data that can improve decision making. This paper explores the use of data mining to extract patterns from data in the domain of social welfare. It discusses the application of the Integrated Knowledge Discovery and Data Mining process model (IKDDM) a social welfare programme in Jamaica. Further, it demonstrates how the knowledge acquired from the data is used to develop a knowledge driven decision support system (DSS) in the PATH CCT programme. This system was successfully tested in the domain showing over 94% accuracy in the comparative decisions produced.
Business/IT Alignment in Two Sided Markets
Authors: Bartens Yannick , Schulte Frederik , Voß Stefan
Published: December 2014

Business/IT alignment can be considered a key challenge in IT governance and becomes especially important in IT-heavy and internet based business models. Recent discussions express the need for a bi-directional paradigm for internet based business models. IT governance frameworks support business/IT alignment but mostly follow a business-driven alignment paradigm. We identify characteristics of internet based business models and examine how the IT governance framework COBIT 5 can integrate these characteristics under consideration of a bi-directional business/IT alignment process. We reveal that requirements for internet based business models are not fully covered by the framework. Based on a structural description of internet based business models and the COBIT 5 Goal Cascade, we explain these specific requirements and propose a possible integration of a bottom-up alignment. With this work we provide guidance in the challenge of business/IT alignment for internet based business models and show pathways for IT governance frameworks to better support a bi-directional alignment.
On the Imperative Solicitude for Evolvability Evaluation in Value Management
Authors: Maes Kim , De Bruyn Peter , Oorts Gilles , Huysmans Philip
Published: December 2014

A rapidly changing market environment is forcing contemporary organizations to continually adapt themselves. This causes the need for organizational structures, processes as well as their supporting information systems (IS) to adapt accordingly. Nevertheless it is striking to note that few value management practices explicitly incorporate evolvability as an important criterion for their evaluation of information technology dependent strategic initiatives (ITDSI). In this paper, the authors try to make a contribution regarding this issue. They explore some possibilities for assessing the evolvability of an information technology (IT) application. In addition, a set of five specific management guidelines is proposed to guide organizations, which are willing to address this issue, in their efforts. This should enable an organization to more easily select and deploy evolvable information systems, enhance its overall alignment with its environment and obtain a competitive advantage. The relevance of our approach is demonstrated by showing how it fits within the enterprise goals, IT goals and enabling practices as defined by the COBIT framework.
Broadband and e-Government Services in South East Europe
Authors: Antonis Konstantinos , Bouras Christos , D'Elia Fabrizio , Di Vincenzo Annalisa , Diles Georgios , Kokkinos Vasileios , Koskeris Andreas
Published: December 2014

The European Commission acknowledging the significance of broadband for the improvement of citizen welfare and its economic benefits, has put in place targets for the diffusion of broadband to all citizens and businesses in the European Union. This manuscript comparatively assesses the current state of affairs in broadband and digital public services in selected South East Europe (SEE) countries in order to identify weaknesses and highlight strengths, and attempts to measure the impact and effectiveness of broadband on the economy. To this direction, the authors focus on evaluating the correlation between broadband and growth and employment. They also estimate the savings achieved by the usage of e-services and the potential savings that will follow their increased utilization over the next years. The analysis is followed by a number of recommendations that aim to support informed decision making. The manuscript builds on four surveys that took place during the second quarter of 2013.
Self-Organized Social Solidarity (SoSS) Initiatives in Greece
Authors: Staiou Eleni-Revekka , Gouscos Dimitris
Published: December 2014

Since the beginning of the economic crisis in Greece, the first impacts were felt on standards of everyday living. Citizens, frustrated by the state's handling of the crisis, felt the urge to self-organize and take action based on their own strengths and volunteerism as the only practical solution to fill in the gaps left by the state's absence of intervention. Rooted in the country's economic crisis, Greek citizens' self-organized social solidarity (SoSS) initiatives have been focused on acting and innovating rather than protesting and are now rapidly growing. Examples of such initiatives are social grocery stores, alternative currencies, time banks, neighborhood groups for sanitation and general caretaking, assistance to students in primary/secondary education to name a few. This article has two main objectives. The first is to present self-organized social solidarity initiatives in Greece and further attempt to characterize them based on certain features, such as their scope and mode of operation. The second objective is to investigate how these initiatives use the internet and online media, with an emphasis on social media for communicating, coordinating and further developing such activities.
The Implementation of Cloud-Based Telemedical Applications for External Quality Control Purposes in the Field of Cytopathology
Authors: Archondakis Stavros , Pouliakis Abraham , Margari Niki , Karakitsos Petros
Published: December 2014

The aim of this study was to analyze in details the implementation of an accredited proficiency testing scheme by cytopathology labs wishing to establish external quality control measures according to ISO 15189:2012. The proficiency testing scheme was based on simple Cloud-based telemedical applications and was enthusiastically accepted by all colleagues due to its simplicity and its low cost. Six major cytopathology laboratories contributed fifty conventional pap smears with histological confirmation from their registries voluntarily. Twenty board-certified cytopathologists reviewed the smears voluntarily and recorded their diagnoses. Four major diagnostic categories of cytological reports were used for statistical purposes. In addition to diagnosis, reviewers also commented on overall smears quality. Ten smears in which diagnostic interobserver accordance was almost perfect were selected for further study. A characteristic video from each one of the 10 selected smears was transferred via a simple cloud application to password-protected accounts for remote review by independent cytopathologists. Contributor's and reviewer's diagnoses were collected, recorded and statistically evaluated. The statistical evaluation of each participation' s results were a valuable external quality control tool for each participating laboratory and its members.
Temporal Join with Hilbert Curve Mapping and Adaptive Buffer Management
Authors: Raigoza Jaime , Sun Junping
Published: December 2014

Management of data with a time dimension increases the overhead of storage and query processing in large database applications especially with the join operation, which is a commonly used and expensive relational operator. The temporal join evaluation can be time consuming because temporal data are intrinsically multi-dimensional. Also, due to a limited buffer size, the long-lived data can be frequently swapped-in and swapped-out between disk and main memory thus resulting in a low cache hit ratio. The proposed index-based Hilbert-Temporal Join (Hilbert-TJ) join algorithm maps temporal data into Hilbert curve space that is inherently clustered, thus allowing for fast retrieval and storage. This paper also proposes the Adaptive Replacement Cache-Temporal Data (ARC-TD) buffer replacement policy which favors the cache retention of data pages in proportion to the average life span of the tuples in the buffer. By giving preference to tuples having long life spans, a higher cache hit ratio can be achieved. The caching priority is also balanced between recently and frequently accessed data. The comparison study consists of different join algorithms and buffer replacement policies. Additionally, the Hilbert-TJ algorithm offers support to both valid-time and transaction-time data.
Proxy-Monitor
Authors: Salva Sébastien , Cao Tien-Dung
Published: December 2014

This paper proposes a conformance testing method combining two well-known testing approaches, runtime verification and passive testing. Runtime verification addresses the monitoring of a system under test to check whether formal properties hold, while passive testing aims at checking the conformance of the system in the long-term. The method, proposed in this paper, checks whether an implementation conforms to its specification with reference to the ioco test relation. While passively checking if ioco holds, it also checks whether the implementation meets safety properties, which informally state that “nothing bad ever happens”. This paper also tackles the trace extraction problem, which is common to both runtime verification and passive testing. The authors define the notion of Proxy-monitors for collecting traces even when the implementation environment access rights are restricted. Then, they apply and specialise this approach on Web service compositions. A Web service composition deployed in different Clouds is experimented to assess the feasibility of the method.
Investigation of ANFIS and FFBNN Recognition Methods Performance in Tamil Speech Word Recognition
Authors: Rojathai S. , Venkatesulu M.
Published: December 2014

In speech word recognition systems, feature extraction and recognition plays a most significant role. More number of feature extraction and recognition methods are available in the existing speech word recognition systems. In most recent Tamil speech word recognition system has given high speech word recognition performance with PAC-ANFIS compared to the earlier Tamil speech word recognition systems. So the investigation of speech word recognition by various recognition methods is needed to prove their performance in the speech word recognition. This paper presents the investigation process with well known Artificial Intelligence method as Feed Forward Back Propagation Neural Network (FFBNN) and Adaptive Neuro Fuzzy Inference System (ANFIS). The Tamil speech word recognition system with PAC-FFBNN performance is analyzed in terms of statistical measures and Word Recognition Rate (WRR) and compared with PAC-ANFIS and other existing Tamil speech word recognition systems.
Rice Paper Classification Study Based on Signal Processing and Statistical Methods in Image Texture Analysis
Authors: Zhai Haotian , Huang Hongbin , He Shaoyan , Liu Weiping
Published: December 2014

Texture analysis plays an important role in image processing. In the field of texture analysis, the regular texture has been studied a lot, but the natural texture with complex backgrounds is less studied. This paper brings texture analysis into the study of rice paper's classification. First of all it shows the processing flow chart of rice paper classification. By comparing the different kinds of texture analysis methods it chooses the LAWS texture method and uncertainty texture spectrum method to achieve the rice paper classification. When it uses the two texture analysis methods separately, the classification accuracy of rice paper is lower, so it tries to combine the two texture analysis methods. The experimental results show that the classification result got with two combined texture analysis methods is better than that got with one single texture analysis method. The classification accuracy of rice paper has been distinctly improved after the combination of the two texture analysis methods.
Development and Technology Research on System Used for Colour Inspection in Traditional Chinese Medicine
Authors: Zheng Dongmei , Dai Zhendong , Wang Hongmo
Published: December 2014

Colour inspection in traditional Chinese medicine (CITCM) has been conducted for thousands of years to diagnose illness. However, CITCM has limitations in accuracy and quantity of illness depiction. Thus, a system for an objective CITCM is developed in this study. In this scheme, the entire system includes two parts, namely, hardware and software. The hardware is an image acquisition device in standard lighting conditions. The software is used for a three-step digital image processing: firstly, the skin/non-skin classification is performed; secondly, the facial features are localised; finally, the facial special region corresponding to five internal organs are achieved. The chromaticity is subsequently calculated using 100 samples. Experimental results demonstrate that the proposed scheme exhibits better performance than existing methods towards objective CITCM research.
Radiation-Resistant Valve-Inductor-Type Motor as a Part of Technological Installation for Recycling Nuclear Industrial Waste
Authors: Gayfutdinov A. , Plastun Anatoliy , Baranov Mikhail
Published: December 2014

Induction motors with conventional organic insulation are used at technological plants designed for recycling nuclear fuel waste of nuclear power stations. In the nuclear radiation environment, the service life of these asynchronous motors does not typically exceed 3-4 months as the winding insulation is destructed being exposed to nuclear radiation. This results in costs increase. To prolong the motor service life and reduce the costs, a valve-inductor-type motor is being developed for this application field due to a simple construction of the stator windings and the feasibility of using non-organic insulation.
Definition of the Transfer Function Parameters of Asynchronous Motor as an Object of Temperature Control
Authors: Pugachev Alexander , Fedyaeva Galina
Published: December 2014

The analysis and systematization of research methods of thermal state of induction motors including traction ones is done. It is shown that for each type of motor it is necessary to develop its own mathematical model of thermal processes, and its verification should be carried out only on the basis of experimental investigations. The structure and operating principles of the complex developed physical model of the traction electric drive with induction motors is represented. The motors have a cooling system with variable-speed electric fan and subsystem of measurement and recording of monitored parameters. The method and the results of experimental study of the processes of heating and cooling of the induction motor are illustrated. Transfer functions and approximation curves of transients are proposed, their parameters are defined.
Wind Turbine Speed Control with Maximum Power Extracting Based on Fuzzy Logic
Authors: Manusov Vadim Z. , Khaldarov Sherzod K.
Published: December 2014

In this paper, an adapted control scheme based on fuzzy logic approach to adjusting turbine speed so as to track the maximum power points is proposed. This scheme facilitates continuous control of wind turbine speed, adapting to the changing wind speed.
Analysis of Physical Processes in a Holding Electrical Furnace
Authors: Timofeev Victor , Perfilyev Sergey
Published: December 2014

The present article describes the results of automated design and analysis of electromagnetic, thermal and hydrodynamic processes in a holding electrical furnace for preparation of aluminum alloys. The availability of a parameter model enables to design a furnace of any given capacity in quick time and carry out an analysis of physical processes in it.
Modes of Traction Power Supply System in Case of Electric Rolling Stock Equipped with Energy Storage
Authors: Spiridonov Egor , Shchurov Nikolai , Larin Artem
Published: December 2014

Modes of traction power supply system in case of electric vehicle equipped with energy storage are considered in the paper. It is shown that the application of energy storage for limiting the rolling stock current does not only allow utilizing electric energy more efficiently but also reduces energy loses in traction power supply system.
Development of the Combined Technique of Manufacturing the Elongated Shaped Charges with Advanced Efficiency
Authors: Shirokov Ilya , Nurmukhametov A. , Grechoukhina M.
Published: December 2014

The paper proposes the new technique of manufacturing the elongated cumulative charges (ECC); the technique was developed to advance the ECC efficiency and to reduce the production costs through lowering their manufacturing cost.
Numerical Calculation of Temperature and Microstructure for Induction Surface Hardening
Authors: Schlesselmann Dirk , Nikanorov Aleksandr , Nacke Bernard
Published: December 2014

In the present paper, a new numerical model for calculating martensite microstructure in induction surface hardening processes is introduced. It takes into account the heating as well as the quenching process and uses the temperature history of a work piece to calculate martensite formation. The calculation is based on an empirical equation found by Koistinen and Marburger [1].A comparison between the heat distribution within a work piece at the end of the heating process and the distribution of martensite after quenching is performed for different process parameters. Thus, it is determined, in which case the temperature distribution is sufficient to predict the hardened layer and in which case the microstructure has to be calculated to receive accurate results. The model is verified by comparing simulation results with different experiments.
Numerical Modeling of Steel Surface Hardening in the Process of High Energy Heating by High Frequency Currents
Authors: Skeeba Vadim Yu. , Ivancivsky Vladimir , Pushnin Valeriy
Published: December 2014

Surface layer modification methods using concentrated energy sources to ensure high heating rates of approximately 104 – 105 °C/s are becoming increasingly common in an attempt to improve operational performance of machine components. As a result, it is quite difficult to determine heat cycle parameters by means of experiments to predict the required intensity and distribution behavior of residual stresses and strains. The paper addresses the issue of numerical simulation of the stress-strain behavior during high energy heating by high frequency currents (HFC HEH). A finite element model has been generated using the ANSYS and SYSWELD software based on numerical computations of differential equations for transient heat conduction (Fourier equation), carbon diffusion (Fick's second law), and the elastic-plastic behavior of the material. The simulation data was verified by full-scale experiments using optical and scanning microscopy and mechanical and X-ray methods to determine residual stresses. It has been established that the level of residual compressive stresses on the component surface can be from-500 to-1000 MPa within the range of HFC HEH process variations under review. It is proven in theory and confirmed by experiments that the transition layer thickness must amount to 25 – 33 % of the hardened layer depth for the tensile stress peak to shift to deeper material layers while compressive stresses on the surface decrease by 6 – 10 %, in order to prevent hardening cracks.
Advantages of High-Precision Plasma Cutting for Processing Bimetallic Compositions
Authors: Rakhmyanov Kharis , Rakhmyanov Andrey , Zhuravlev Anatoliy
Published: December 2014

The results of high-precision plasma processing of thin sheets of the steel St3–copper M1 bimetallic compositions obtained by explosion welding are reported. The optimal technological and experimental parameters have been determined and presented in the paper. The specific features of the cut edge formation on each side of the bimetallic interface are considered in detail.
The Influence of Main Pump with High-Voltage Variable Frequency Drives on Electric Motors Periodic Repair
Authors: Shabanov V.A. , Khakimyanov M.I. , Khakimov E.F.
Published: December 2014

The main objective of the work - to investigate the effect on the wear of high voltage electric motors of main pump units periodic switching on and off in cyclical pumping. Frequent starts motors in a cyclic pumping lead to accelerated wear of the mechanical parts of the motor due to the impact of dynamic loads at start-up, as well as winding insulation due to high inrush currents flow. As a result of accelerated depreciation may decrease residual life, overhaul period and service life of electric motors. The main factor affecting the service life of insulation motors are winding temperature, and as a consequence, the thermal aging of the insulation. The use of variable frequency drive can significantly reduce the cyclic transfer modes, or even eliminate them. The authors obtained analytical expressions for the evaluation of insulation deterioration at the start of the motor, which allow us to study the impact of the following factors: insulation class, the start time, break time at work, initial and nominal temperature, the temperature rise of the windings over the ambient temperature. The effect on the deterioration of the insulation cold start and hot conditions, as well as the percentage of the hottest start-ups in the total number of starts. Obtained expressions for the depreciation of isolation to determine the change timing of overhauls of high voltage electric main pump units. The developed method was approved by the example of the use of a variable frequency drive on the oil pumping stations construction section Leninsk-Nurlino trunk pipeline Nizhnevartovsk - Kurgan - Kuibyshev. The analysis showed that the installation of a variable frequency drive motors on three main pump units technological area of the number of starts to decline by 14%. The results can be used for pipeline transport of oil companies when planning the timing and costs of the current and capital repairs of high voltage electric motors main pump units.
Structure and Properties of Welded Joints of Titanium Substrates with Ti-Ta Corrosion Resistant Coatings
Authors: Komarov P.N. , Ruktuev A.A. , Golkovski M.G.
Published: December 2014

The possibility of joining titanium substrates with Ti-Ta corrosion-resistant coatings was investigated. Joints were obtained by manual tungsten inert gas welding. Microstructure investigations revealed the inhomogeneous distribution of alloying elements and a martensitic microstructure in joints. Microhardness values in Ti-Ta coatings and welded seams were approximately equal and varied from 380 to 420 HV. The value of titanium substrate microhardness was about 180 HV. An ultimate strength of welded joints was equal to 580 MPa while the strength of the starting material was 365MPa.
Electron-Beam Surfacing Wear-Resistant Coatings, Reinforced Refractory Metal’s Borides
Authors: Drobyaz Ekaterina , Zimoglyadova Tatyana A. , Gromov Victor
Published: December 2014

Structural and phase states of wear-resistant coatings obtained by cladding of self-fluxing nickel-based powder mixtures (77 % Ni, 15 % Cr, 2 % B, 3 % Si, 3 % Fe and others) using an electron beam injected in the atmosphere were investigated. The fabricated coatings possessed the complex gradient structure combining hard and ductile components. In the structure of coatings iron borides (Fe2B) surrounded by the ductile matrix represented by Fe, Ni-based γ-solid solution were observed. An increase in the volume fraction of a high strength component in the coating can be reached by additional alloying of the surface by amorphous boron. In this case, microhardness of the coating increases up to 1200 HV.
Influence of the Fe Content on the Texture of the Hot Rolled 3104 Alloy
Authors: Aryshensky Evgeniy , Tepterev Maksim S. , Latushkin Ilya
Published: December 2014

The article presents a study of the Fe content influence upon the recrystallization texture and a randomly oriented component in the hot-rolled 3104 alloy flat sheets. With the aid of the X-ray structure analysis of hot-rolled workpieces with various Fe contents, the main textural components have been revealed and the proportion of a randomly oriented component has been found. In order to establish an effect of the specific volume of the recrystallization texture on cold-worked coil anisotropy, the sheet earing tests for all batches were performed.
Development of the Process of Pseudo-Ligatures Manufacturing from Aluminum and Nickel Powders for the Modification of Alloys
Authors: Nosova Ekaterina A. , Kuzina Antonina A. , Kuts Anna V.
Published: December 2014

Compacting after pressing and sintering of briquettes made from an aluminum powder with an average particle size from 50 to 150 microns, the specific surface area Ssp=0.26 m2/g and a nickel powder with an average particle size from 25 to 100 microns, the specific surface area Ssp= 0.03 m2/g has been investigated. Pressing load varied from 15 to 25 MPa for the aluminum powder and from 20 to 45 MPa for the nickel powder. Sintering of aluminum powder briquettes was carried out at temperatures (0.5-0.83) of melting temperature, (0.3-0.46) of melting temperature from the nickel powder. It is shown that the application of high pressure, low temperatures and short time makes it possible to receive pseudo-ligatures from an aluminum powder with porosity about 32% and a nickel powder with porosity about 30%.
Technological Peculiarities Providing the Surface Quality Parameters at Ultrasonic Surface Hardening
Authors: Rakhmyanov Kharis , Semyonova Julia , Eryomina Anna
Published: December 2014

This paper presents technological limitations on processing modes that are caused by the need to provide the required quality parameters of machine part surfaces. We consider the peculiarities of the surface material behavior when processed by ultrasonic surface hardening, and show the causes of defects appearing in plastic deformation and the ways of their elimination.
Numerical Simulation of Parts Quenching Deformation
Authors: Osipov Ivan , Bachurin Alexandr , Kurlayev Nikolay
Published: December 2014

The problem of unsteady heat transfer of a part with the quench medium and thermal deformation of aluminum alloy parts is discussed and the results of calculating are compared to the experimental data. The experimental data confirmed the nature of the deformation obtained by numerical simulation. The difference between the deformations obtained in the calculations and the experimental data was 23%.
The Hydro-Unit of Mini-Hydroelectric Power Station on the Basis of the Double Fed Induction Machine
Authors: Diyorov R.H. , Kuznetsov D.A.
Published: December 2014

The system of automatic active power control for the mini-hydroelectric power station hydro-unit based on double fed induction machine differing by high response from the existing designs is proposed.
Experimental Study of Geometrical Parameters of Abrasive Grains in Modeling their Cutting Edges with the Surface of Rotation
Authors: Osipov Alexander Petrovich , Fedotov Victor Vassilevich , Zharov Alexander Alexandrovich
Published: December 2014

In machining with grinding, it is necessary to know values of geometrical parameters of cutting edges of abrasive grains. In this paper for modeling of cutting edges of abrasive grains with rotation surfaces based on generatrix as a power function and for division cutting edges on both plowing and forming a chip, values of basic parametersBP,NPwere obtained experimentally. The influence of abrasive grain size, sieve-shaking procedure, mechanical properties of workpiece and type of abrasive material on these parameters was determined. The restrictions of this model were designated. It is established that traditional parameters such as corner radiusrand apex angle 2θ can be used in case of microcutting with small grain penetration depth.
Laser Interferometry Method of Stress Determination in Loaded Cutting Tool Parts
Authors: Nekrasov R.Yu. , Soloviev I.V. , Putilova U.S.
Published: December 2014

A сontinuous growth of the intensity of metal working processes in mechanical engineering, changes in the structure, functionality and cost of technological equipment, an increasing use of high-strength materials which, as a rule, are characterized by low machinability, determine the necessity of an integrated approach both to the studies of the working capacity of cutting tools and to the control of machining conditions in order to achieve maximum technical and economic efficiency in operating automated manufacturing equipment and numerically controlled machine tools.
A Method of Processing of Involute Profiles of Large-Module Gear Wheels
Authors: Emelyanov S.G. , Chevychelov Sergey A. , Chistyakov Petr P.
Published: December 2014

The article presents a study on the influence of changes in the angle of rotation of the tool axis produced relative to the involute profile on the accuracy of its approximation of the hyperboloid tool and also the effect on the accuracy of the generating line segmentation.
Temperature Operation Mode of Hydraulic Pressure Rings for Contact Shoes in Ore-Thermal Furnace
Authors: Dobrov Anton , Vlasov David , Bikeev Roman
Published: December 2014

Numerical simulation of temperature fields for justification of material choice for contact shoes pressure rings in ore-thermal furnaces are carried out using 3D-models in numerical finite element method program package ANSYS. Results are shown and recommendations for water-cooling parameters are given.
Optical Сlocks and Thermal Fields Impact
Authors: Gurov Michail G. , Gurova Elena G.
Published: December 2014

The sensitivity of the optical clocks to thermal radiation is shown in the research. The paper gives a brief overview of the optical clocks shift resonance reasons. The ways to investigate and decrease the thermal radiation impact on 87Sr optical clocks are found.
Solution to Problem of Heating of Metal in the Furnace Taking into Account Pulse Nature of Heating
Authors: Druzhinin Gennadiy M. , Samoylovich Yuriy A. , Popov Evgeniy V.
Published: December 2014

The method of calculation of heating of metal in the thermal furnace taking into account pulse system of heating is presented in article. The experimental dataobtained on the pusher furnace, heated by high-speed recuperative torches with pulse system of burning of fuel are submitted.
Influence of High-Frequency Gas-Dynamic Unsteadiness on Heat Transfer in Gas Flows of Internal Combustion Engines
Authors: Plotnikov L.V. , Zhilkin B.P. , Brodov Y.M.
Published: December 2014

The results of experimental research of the influence of high-frequency gas-dynamical nonstationarity on the intensity of heat transfer in the intake and exhaust tract of piston engines are presented in the article. Experimental setup and methods of the experiments are described in the article. Dependences of instantaneous values of flow velocity and the local heat transfer coefficient in the intake and exhaust tract of the engine from the crankshaft rotation angle are presented in the article.
Electric Power Systems KIT - Siemens 3API DT 145kV Circuit-Breaker
Authors: Vozisova Olga , Egorov Alexander , Trembach Anton
Published: December 2014

3D printing techniques provides new power systems equipment industrial designing methods. The new constructor Siemens 3AP1 DT 145 kV circuit breaker is considered in the article.
Analysis of Ice Melting System
Authors: Akhmedova Olga , Soshinov Anatoly
Published: December 2014

The problem of preventing icing accidents in electric networks of power systems is relevant in many regions of Russia. Disruptions of overhead lines, caused by intensive icing and icing and wind loads are most severe in their effects. However, the devastating effect of icing is not fatal. This is confirmed by the experience of power systems, systematically carrying on a struggle against ice. Prevention of icing accidents is based on the use of an integrated system of activities in a systematic manner.
Winding Factor of Permanent Magnet Synchronous Machines with Fractional Slot Concentrated Windings
Authors: Korneev Vyacheslav , Pristup Alexander , Gubareva Olga E.
Published: December 2014

The use of fractional slot concentrated windings in electrical machines has a variety of advantages. A winding factor is one of the most important parameter which is necessary for electrical machines designing and modeling.
Automatic Control Principles of Thermal Station Output Parameters on the Basis of Controlled Electric Drives
Authors: Karandaev Alexander , Khramshin Vadim , Khramshina Ekaterina
Published: December 2014

The paper is concerned with the functional scheme and the basic equipment of a thermal station. Parameters requiring control in the continuous process of the heat transfer medium production and its delivery to the consumer are listed. The authors show the technological relationship between water heating conditions and the thermal station controlled electric drives providing the predetermined process conditions. Functional relations determining the balance of water flow and water pressure of the thermal station and the consumer as well as the relation of water flow and temperature of the hot water boiler are given. The functional scheme of control system for the thermal station output parameters and the block scheme of the local control systems of the heat and water balance are shown. The principles of process parameters control are justified.
Clima organizacional: fatores significativos na percepção de docentes e discentes vinculados a programas de pós-graduação
Authors: Moro Angélica Balconi , Balsan Laércio André Gassen , Costa Vânia Medianeira Flores , Schetinger Maria Rosa Chitolina
Published: December 2014

Este estudo teve como objetivo analisar os fatores significativos do clima organizacional em programas de pós-graduação (PPGs), na percepção de docentes e discentes. Para tanto, realizou-se uma pesquisa exploratória de caráter quantitativo do tipo multi-casos. Participou da pesquisa uma amostra de 200 alunos e 52 professores de quatro PPGs de uma Instituição Pública de Ensino Superior. Os fatores selecionados para a realização deste estudo foram: Relacionamento Interpessoal; Gestão; Envolvimento/Comprometimento; Organização e Condições de trabalho; e, Realização/Satisfação. A análise dos dados demonstrou que alguns fatores, como Relacionamento interpessoal, Gestão, Envolvimento/comprometimento, Realização/satisfação apresentam alto nível de satisfação entre a amostra pesquisada. Já o fator Organização e condições de trabalho necessita atenção especial para a manutenção da satisfação dos indivíduos e consequente melhoria do clima organizacional dos PPGs.
Uma análise sobre a produção acadêmica dos docentes das universidades estaduais paranaenses de 2008 a 2012
Authors: Reis Luciano Gomes dos , Horvath Jaqueline
Published: December 2014

O presente artigo teve como objetivo verificar a produção acadêmica qualificada dos docentes de Ciências Contábeis das universidades estaduais paranaenses, no período de 2008 a 2012. O foco da pesquisa foram os docentes que possuem titulação de mestre ou doutor, uma vez que, segundo a legislação, a produção científica não é atribuição prioritária dos docentes especialistas. Após levantamento inicial, a amostra pesquisada foi de 76 docentes. A metodologia empregada foi a análise documental, utilizando-se como fonte principal os documentos oriundos dos currículos cadastrados na plataforma Lattes do CNPQ. Após o término da coleta e análise de dados, chegou-se às seguintes conclusões: a maioria dos mestres ou doutores, entre os anos de 2008 até 2012, apresentam poucos artigos publicados em periódicos referenciados pelo Qualis, sendo que 35,45% da amostra não produziram nenhum artigo. De acordo com Barth, Ensslin e Reina (2012), o processo de titulação como mestre e doutor não tem por objetivo principal o ingresso na docência, mas sim a melhora na capacitação. Entretanto, segundo dados pesquisados, os mestres e doutores das universidades estaduais pesquisadas não apresentaram melhora na sua capacitação, quando analisado sob a ótica da pesquisa científica. Com base nos dados pesquisados, conclui-se que, para a maioria deles, o perfil de pesquisador não foi alavancado.
Contribuição do Plano de Desenvolvimento Institucional como ferramenta de planejamento estratégico na gestão de uma instituição privada de ensino superior do Recife
Authors: Carneiro Silva Maria Caroline , Muniz Côrtes Jéssica Maria , Florêncio dos Santos Joséte , De Azevedo Barbosa Maria de Lourdes
Published: December 2014

Esta pesquisa analisou as contribuições do Plano de Desenvolvimento Institucional como ferramenta de planejamento estratégico na gestão de uma instituição privada de ensino superior do Recife. O tópico selecionado é uma replicação da dissertação de Silva (2013), “CONTRIBUIÇÕES DO PLANO DE DESENVOLVIMENTO INSTITUCIONAL E DO PLANEJAMENTO ESTRATÉGICO NA GESTÃO DE UNIVERSIDADES FEDERAIS BRASILEIRAS”. Para isto, foi realizado um estudo de caso qualitativo e utilizou métodos como codificação, redação de memorandos, amostragem teórica para analisar o resultado, conforme orientado por Charmaz (2009), buscando criar categorias sólidas e análises reveladoras através da saturação e classificação. O estudo corroborou com outros estudos sobre o tema. Foi observado que a instituição utilizou o PDI como ferramenta estratégica, que enfrentou resistência na implantação, porém o saldo foi positivo para instituição visto que contribuiu para a comunicação interna que era algo desejado pela instituição.
Conciliando administração de projetos com planejamento estratégico na gestão de universidades federais brasileiras
Authors: Silva Julio Eduardo Ornelas , Seemann Daniel Kurten , Melo Michelle Bianchini de , Amante Cláudio José , Ramos Alexandre Moraes , Silva Gabriela Tavares da
Published: December 2014

O planejamento estratégico é um meio pelo qual uma organização define o seu futuro, indicando os meios para se chegar aos objetivos e conquistar a visão pretendida. A sua prática contribui para o autoconhecimento institucional, e proporciona mudanças na condução das suas práticas de modo a trazer efetividade e estratégia. Um bom planejamento exige que sua elaboração seja conduzida de maneira correta, e a administração de projetos pode contribuir no processo de elaboração, por possuir diretrizes sistemáticas com início, meio e fim. O presente artigo tem por objetivo verificar se a construção dos planejamentos estratégicos de universidades federais brasileiras apresentam características da administração de projetos. Para responder ao objetivo, foram realizadas entrevistas in loco com gestores de universidades federais que participaram do processo de elaboração do planejamento estratégico de suas instituições. Os resultados indicam que os planejamentos são estratégicos e que seus escopos possuem muitas características da administração de projetos, no entanto, a condução do processo, ou os meios, são divergentes, acarretando dificuldades na aceitação e implementação do planejamento estratégico institucional.
Fast transport from Southeast Asia boundary layer sources to northern Europe: rapid uplift in typhoons and eastward eddy shedding of the Asian monsoon anticyclone
Authors: Vogel B. , Günther G. , Müller R. , Grooß J.-U. , Hoor P. , Krämer M. , Müller S. , Zahn A. , Riese M.
Published: December 2014

Abstract. Enhanced tropospheric trace gases such as CO, CH4 and H2O and reduced stratospheric O3 were measured in situ in the lowermost stratosphere over northern Europe on 26 September 2012 during the TACTS aircraft campaign. The measurements indicate that these air masses clearly differ from the stratospheric background. The calculation of 40-day backward trajectories with the trajectory module of the CLaMS model shows that these air masses are affected by the Asian monsoon anticyclone. Some air masses originate from the boundary layer in Southeast Asia/West Pacific and are rapidly lifted (1–2 days) within a typhoon up to the outer edge of the Asian monsoon anticyclone. Afterwards, the air parcels are entrained by the anticyclonic circulation of the Asian monsoon. The subsequent long-range transport (8–14 days) of enhanced water vapour and pollutants to the lowermost stratosphere in northern Europe is driven by eastward transport of tropospheric air from the Asian monsoon anticyclone caused by an eddy shedding event. We found that the combination of rapid uplift by a typhoon and eastward eddy shedding from the Asian monsoon anticyclone is a novel fast transport pathway that may carry boundary emissions from Southeast Asia/West Pacific within approximately 5 weeks to the lowermost stratosphere in northern Europe.
The use of SMILES data to study ozone loss in the Arctic winter 2009/2010 and comparison with Odin/SMR data using assimilation techniques
Authors: Sagi K. , Murtagh D. , Urban J. , Sagawa H. , Kasai Y.
Published: December 2014

Abstract. The Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) on board the International Space Station observed ozone in the stratosphere with high precision from October 2009 to April 2010. Although SMILES measurements only cover latitudes from 38° S to 65° N, the combination of data assimilation methods and an isentropic advection model allows us to quantify the ozone depletion in the 2009/2010 Arctic polar winter by making use of the instability of the polar vortex in the northern hemisphere. Ozone data from both SMILES and Odin/SMR (Sub-Millimetre Radiometer) for the winter were assimilated into the Dynamical Isentropic Assimilation Model for OdiN Data (DIAMOND). DIAMOND is an off-line wind-driven transport model on isentropic surfaces. Wind data from the operational analyses of the European Centre for Medium- Range Weather Forecasts (ECMWF) were used to drive the model. In this study, particular attention is paid to the cross isentropic transport of the tracer in order to accurately assess the ozone loss. The assimilated SMILES ozone fields agree well with the limitation of noise induced variability within the SMR fields despite the limited latitude coverage of the SMILES observations. Ozone depletion has been derived by comparing the ozone field acquired by sequential assimilation with a passively transported ozone field initialized on 1 December 2009. Significant ozone loss was found in different periods and altitudes from using both SMILES and SMR data: The initial depletion occurred at the end of January below 550 K with an accumulated loss of 0.6–1.0 ppmv (approximately 20%) by 1 April. The ensuing loss started from the end of February between 575 K and 650 K. Our estimation shows that 0.8–1.3 ppmv (20–25 %) of O3 has been removed at the 600 K isentropic level by 1 April in volume mixing ratio (VMR).
Atmospheric measurements of ratios between CO2 and co-emitted species from traffic: a tunnel study in the Paris megacity
Authors: Ammoura L. , Xueref-Remy I. , Gros V. , Baudic A. , Bonsang B. , Petit J.-E. , Perrussel O. , Bonnaire N. , Sciare J. , Chevallier F.
Published: December 2014

Abstract. Measurements of CO2, CO, NOx and selected Volatile Organic Compounds (VOCs) mole fractions were performed continuously during a 10-day period in the Guy Môquet tunnel in Thiais, a peri-urban area about 15 km south of the centre of Paris, between 28 September and 8 October 2012. This data set is used here to identify the characteristics of traffic-emitted CO2 by evaluating its ratios to co-emitted species for the first time in the Paris region. High coefficients of determination (r2 > 0.7) are observed between CO2 and certain compounds that are characteristic of the traffic source (CO, NOx, benzene, xylenes and acetylene). Weak correlations (r2 < 0.2) are found with species such as propane, n-butane and i-butane that are associated with fuel evaporation, an insignificant source for CO2. To better characterise the traffic signal we focus only on species that are well-correlated with CO2 and on rush-hour periods characterised by the highest traffic-related mole fractions. From those mole fractions we remove the nighttime-average weekday mole fraction obtained for each species that we infer to be the most appropriate background signal for our study. Then we calculate observed Δspecies / ΔCO2 ratios, which we compare with the ones provided by the 2010 bottom–up high-resolved regional emission inventory from Airparif (the association in charge of monitoring the air quality in Île-de-France), focusing on local emission data for the specific road of the tunnel. We find an excellent agreement (2%) between the local inventory emission CO / CO2 ratio and our observed ΔCO / ΔCO2 ratio. Former tunnel experiments carried out elsewhere in the world provided observed ΔCO / ΔCO2 ratios that differ from 49 to 592% to ours. This variability can be related to technological improvement of vehicles, differences in driving conditions, and fleet composition. We also find a satisfactory agreement with the Airparif inventory for n-propylbenzene, n-pentane and xylenes to CO2 ratios. For most of the other species, the ratios obtained from the local emission inventory overestimate the observed ratios to CO2 by 34 to more than 300%. However, the emission ratios of NOx, o-xylene and i-pentane are underestimated by 30 to 79%. One main cause of such high differences between the inventory and our observations is likely the obsolete feature of the VOCs speciation matrix of the inventory that has not been updated since 1998, although law regulations on some VOCs have occurred since that time. Our study bears important consequences, discussed in the conclusion, for the characterisation of the urban CO2 plume and for atmospheric inverse modelling of urban CO2 emissions.