bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of Generalized Variance Functions in the Analysis of Complex Survey Data
Authors: Cho MoonJung , Eltinge John L. , Gershunskaya Julie , Huff Larry 
Published: May 2014

Abstract
Two sets of diagnostics are presented to evaluate the properties of generalized variance functions (GVFs) for a given sample survey. The first set uses test statistics for the coefficients of multiple regression forms of GVF models. The second set uses smoothed estimators of the mean squared error (MSE) of GVF-based variance estimators. The smooth version of the MSE estimator can provide a useful measure of the performance of a GVF estimator, relative to the variance of a standard design-based variance estimator. Some of the proposed methods are applied to sample data from the Current Employment Statistics survey.
Disclosure Risk from Factor Scores
Authors: Drechsler Jörg , Ronning Gerd , Bleninger Philipp 
Published: May 2014

Abstract
Remote access can be a powerful tool for providing data access for external researchers. Since the microdata never leave the secure environment of the data-providing agency, alterations of the microdata can be kept to a minimum. Nevertheless, remote access is not free from risk. Many statistical analyses that do not seem to provide disclosive information at first sight can be used by sophisticated intruders to reveal sensitive information. For this reason the list of allowed queries is usually restricted in a remote setting. However, it is not always easy to identify problematic queries. We therefore strongly support the argument that has been made by other authors: that all queries should be monitored carefully and that any microlevel information should always be withheld. As an illustrative example, we use factor score analysis, for which the output of interest - the factor loading of the variables - seems to be unproblematic. However, as we show in the article, the individual factor scores that are usually returned as part of the output can be used to reveal sensitive information. Our empirical evaluations based on a German establishment survey emphasize that this risk is far from a purely theoretical problem.
Disclosure-Protected Inference with Linked Microdata Using a Remote Analysis Server
Authors: Chipperfield James O. 
Published: May 2014

Abstract
Large amounts of microdata are collected by data custodians in the form of censuses and administrative records. Often, data custodians will collect different information on the same individual. Many important questions can be answered by linking microdata collected by different data custodians. For this reason, there is very strong demand from analysts, within government, business, and universities, for linked microdata. However, many data custodians are legally obliged to ensure the risk of disclosing information about a person or organisation is acceptably low. Different authors have considered the problem of how to facilitate reliable statistical inference from analysis of linked microdata while ensuring that the risk of disclosure is acceptably low. This article considers the problem from the perspective of an Integrating Authority that, by definition, is trusted to link the microdata and to facilitate analysts’ access to the linked microdata via a remote server, which allows analysts to fit models and view the statistical output without being able to observe the underlying linked microdata. One disclosure risk that must be managed by an Integrating Authority is that one data custodian may use the microdata it supplied to the Integrating Authority and statistical output released from the remote server to disclose information about a person or organisation that was supplied by the other data custodian. This article considers analysis of only binary variables. The utility and disclosure risk of the proposed method are investigated both in a simulation and using a real example. This article shows that some popular protections against disclosure (dropping records, rounding regression coefficients or imposing restrictions on model selection) can be ineffective in the above setting.
An Induction Motor Based Wind Turbine Emulator
Authors: Sokolovs A. , Grigans L. , Kamolins E. , Voitkans J. 
Published: May 2014

Abstract
The authors present a small-scale wind turbine emulator based on the AC drive system and discuss the methods for power coefficient calculation. In the work, the experimental set-up consisting of an AC induction motor, a frequency converter, a synchronous permanent magnet generator, a DC-DC boost converter and DC load was simulated and tested using real-life equipment. The experimentally obtained wind turbine power and torque diagrams using the emulator are in a good agreement with the theoretical ones.
Structural and Thermal Analysis of Automotive Disc Brake Rotor
Authors: Belhocine Ali , Bouchetara Mostefa 
Published: May 2014

Abstract
The main purpose of this study is to analyze the thermomechanical behavior of the dry contact between the brake disc and pads during the braking phase. The simulation strategy is based on softawe ANSYS11. The modeling of transient temperature in the disc brake is actually used to identify the factor of geometric design of the disc to install the ventilation system in vehicles. The thermal-structural analysis is then used with coupling to determine the deformation established and the Von Mises stress in the disc, the contact pressure distribution in pads. The results are satisfactory compared to those of the specialized literature.
Influence of High Pressure and High Temperature Hydrogen on Fracture Toughness of Ni-Containing Steels and Alloys
Authors: Balitskii Alexander , Ivaskevich Ljubomyr , Mochulskyi Volodymyr , Eliasz Jacek , Skolozdra Oleg 
Published: May 2014

Abstract
The effect of hydrogen on short-term strength, low-cycle durability and planestress fracture toughness of 10Cr15Ni27 steel, 04Cr16Ni56 and 05Cr19Ni55 alloys at pressure up to 35 MPa and temperature 293. . . 773 K was investigated. The modes of hydrogen action for which the elongation , reduction of area , low-cycle durability N and crack resistance parameters Kc of alloys are minimal were established: hydrogen pressure above 10 MPa (non-hydrogenated specimens of 04Cr16Ni56 alloy) and above 15 MPa (hydrogenated specimens of 10Cr15Ni27 steel and 05Cr19Ni55 alloy, hydrogen concentration 15 and 19 wppm, respectively).
Robin Heart Surgery Robotic System. Challenges in Mechanical Construction, Control System and Stuff Training Before First Clinical Application
Authors: Nawrat Zbigniew , Kostka Paweł 
Published: May 2014

Abstract
The last decades, when robots have appeared in the operating room, showed the possibility of surgery enhancement by improving precision, repeatability, stability and dexterity. However, taking into consideration still existing limitations of robotics in surgery, and treating the robots as medical devices with the highest degree of safety level requirements, one must take a number of complex actions when preparing the experimental clinical application of a new modern robot Robin Heart. Presented paper describes the current state of procedures carried out in the Robin Heart project of surgery robots prepared for clinical application. Based on experiences with the devices existing on the market and, first of all, thanks to knowledge and expertise gained by our team during last 12 years, intensive work are currently done in order to introduce both mechanical and electronic modifications as well as to improve the safety system. As far as human resources are concerned, a professional team able to carry out the robot-supported surgery is prepared based on the created system of technical and functional trainings on simulation stands, which also includes the developed operation planning procedures. The first telemanipulator designed for clinical practice is the Robin Heart Vision - endoscopic system manipulator.
Bounds for sine and cosine via eigenvalue estimation
Authors: Haukkanen Pentti , Mattila Mika , Merikoski Jorma K. , Kovacec Alexander 
Published: May 2014

Abstract
Define n × n tridiagonal matrices T and S as follows: All entries of the main diagonal of T are zero and those of the first super- and subdiagonal are one. The entries of the main diagonal of S are two except the (n, n) entry one, and those of the first super- and subdiagonal are minus one. Then, denoting by λ(·) the largest eigenvalue,

Using certain lower bounds for the largest eigenvalue, we provide lower bounds for these expressions and, further, lower bounds for sin x and cos x on certain intervals. Also upper bounds can be obtained in this way.
On the Relationships between Zero Forcing Numbers and Certain Graph Coverings
Authors: Taklimi Fatemeh Alinaghipour , Fallat Shaun , Meagher Karen 
Published: May 2014

Abstract
The zero forcing number and the positive zero forcing number of a graph are two graph parameters that arise from two types of graph colourings. The zero forcing number is an upper bound on the minimum number of induced paths in the graph that cover all the vertices of the graph, while the positive zero forcing number is an upper bound on the minimum number of induced trees in the graph needed to cover all the vertices in the graph. We show that for a block-cycle graph the zero forcing number equals the path cover number.We also give a purely graph theoretical proof that the positive zero forcing number of any outerplanar graphs equals the tree cover number of the graph. These ideas are then extended to the setting of k-trees, where the relationship between the positive zero forcing number and the tree cover number becomes more complex.
Determinant Representations of Sequences: A Survey
Authors: Moghaddamfar A. R. , Salehy S. Navid , Salehy S. Nima 
Published: May 2014

Abstract
This is a survey of recent results concerning (integer) matrices whose leading principal minors are well-known sequences such as Fibonacci, Lucas, Jacobsthal and Pell (sub)sequences. There are different ways for constructing such matrices. Some of these matrices are constructed by homogeneous or nonhomogeneous recurrence relations, and others are constructed by convolution of two sequences. In this article, we will illustrate the idea of these methods by constructing some integer matrices of this type.
The theory and applications of complex matrix scalings
Authors: Pereira Rajesh , Boneng Joanna 
Published: May 2014

Abstract
We generalize the theory of positive diagonal scalings of real positive definite matrices to complex diagonal scalings of complex positive definite matrices. A matrix A is a diagonal scaling of a positive definite matrix M if there exists an invertible complex diagonal matrix D such that A = D*MD and where every row and every column of A sums to one. We look at some of the key properties of complex diagonal scalings and we conjecture that every n by n positive definite matrix has at most 2n−1 scalings and prove this conjecture for certain special classes of matrices.We also use the theory of complex diagonal matrix scalings to formulate a van der Waerden type question on the permanent function; we show that the solution of this question would have applications to finding certain maximally entangled quantum states.
Surface Integrity at Reaming by Reamer MT3 Head
Authors: Kouřil  , Čep Robert , Janásek Adam , Bobrovský Róbert 
Published: May 2014

Abstract
The article is focused on surface integrity at reaming with high-productive reaming MT3 head made by HAM-FINAL Company. The term surface integrity is the surface condition of a workpiece after being modified by a manufacturing process. A machining process produces a surface characterized by the shape, metallurgy and mechanical properties. These surface aspects clearly indicate that a machined surface is very complex. Obviously, a high-energy input increases the likelihood of metallurgical damage and therefore results in a poor surface integrity which has effect on final product. Taking into account different types of created energy transferred to the tested surface and subsurface layer, the basic factors influencing surface integrity are temperatures, residual stresses, metallurgical transformations and also surface plastic deformation. The aim of experimental part is surface integrity tested on holes by reaming MT3 head during manufacturing process and last aim is find out MT3 head tool-life with their evaluation.
Sleeves’ Cutting Tool-Life Tests for Ceramic Inserts
Authors: Janásek Adam , Čep Robert , Nováček Pavel , Schreier Jiří , Ligocki Vlastimil , Vrba Vladimír 
Published: May 2014

Abstract
The article is focused on the experimental determination of tool-life for ceramic tool. Nowadays, machining with indexable ceramic cutting inserts can reduce manufacturing cost, if the cutting tool and the machine tool are designed to compliment each other. With the development of modern ceramic tool materials, they are more and more widely used in the field of metal cutting since their mechanical properties and cutting performances have been greatly improved in last decades. On the basis of previous tests the tool-wear was measured at constant cutting parameter which is more typical for High Volume Manufacturing Processes. The tested material, cast iron 25P, is used at car’s engine. The main aim of this article was to find out the performance for this material by arithmetic tolerance of Ra profile, the greatest height of Rz profile and the external diameter D and its connection.
Working on Surface Nitrided Material for Ra 0.1 microns
Authors: Trefil Antonín , Sikora Kamil , Vrba Vladimír , Petrů Jana 
Published: May 2014

Abstract
The article is focused on working nitriding surface components "Handling piston". There is a possible solution outlined in comparison with grinding technology and surface treatment with lamellar discs. The following are recommendations for the use of a suitable material with the grinding surface preparation component before nitriding.
Measurement of Deviation of Roundnes
Authors: Otrusinová Lenka , Čepová L. , Petřkovská Lenka 
Published: May 2014

Abstract
For the measurement of roundness deviations are used different measuring methods and measuring Instruments from universal to high-precision measuring Instruments. Recently, optical measurement Instruments have irreplaceable role and get to the forefront due simpler process of measurement, accelerate measuring and large possibility to storage obtained data. Nowadays more and more successful optical measurements above touch measurement, but touch measurement still has an important role in companies. Therefore, in the experiment were measured the deviations of the roundness on devices measuring by touch method, and by the optical devices. The values of these measurements allowed their comparison and stastical evaluation.
Studying of Interaction of Cutting Tool and Work-Piece at High Production Turning
Authors: Košút Mário , Rakoci Jozef , Czán Andrej , Ďurech Lukáš 
Published: May 2014

Abstract
This paper concentrates on wear mechanisms, tool life and surface quality of different tool grades used to machine steel for roll bearings production. Presented tool system is used for roughing ope-ration in order to increase productivity by substi-tuting ordinary used ISO inserts. All experiments were carried out at University of Zilina.
Influence of the Cutting Speed and Feed Rate on Torque, Feed Force, Roughness and Shape of the Chips During Deep Hole Drilling
Authors: Letavay Martin , Laluha M. , Pilc Jozef 
Published: May 2014

Abstract
This article describes methodology and realization of the deep hole drilling test. Goal of this trial is to define influence of the cutting speed and feed rate on torque and feed force. As well as during the test here was a focus on roughness and shape of the chips. A gun drill was used for deep hole drilling and we used etalon material, were here is possible to define cutting forces without any further testing of different steel grades. Also there is a description of CNC program, which was used for above mentioned testing and it can be utilized during other different trials.
Possibilities of Evaluation of the Fibre Orientation in Injection Moulding Parts
Authors: Martinkovič Maroš , Likavčan Lukáš 
Published: May 2014

Abstract
The fibre orientation in short fibre reinforced thermoplastics depends on injection moulding technology parameters. The aim of this paper is to propose possibilities for comparing fibre orientation of the real sample and the result from simulation software. Fibre orientation of selected injection moulding part is simulated. In some selected points second-order tensor of orientation was estimated. Stereological metallography was used for possibility of comparison these results with experimental ones. An experimental result of estimation of degree of fibre orientation is described. The use of stereological metallography allows very simple and effective experimental estimation of short glass fibre orientation, which can be used for experimental verification of numerical simulation model, which can be optimized to obtained coincidence with experiments.
Radwaste Treatment Center
Authors: Pospíšil Petr 
Published: May 2014

Abstract
Radioactive waste is produced during the NPP operation as well as the NPP dismantling and decommissioning phase. Different kinds of waste with different volumes, volume generation rates, properties and compositions have to be handled and treated according to the regulations of the corresponding country.
The various waste streams arising especially during D&D activities require versatile treatment approaches to satisfy regulatory requirements and customer needs. Westinghouse has over 30 years of experience in the design, erection and commissioning of radwaste treatment equipment and facilities with special attention on waste volume reduction and minimization of secondary waste generation applied in projects, concepts and studies around the world. Minimization of the total life cycle cost for waste treatment and disposal is a key item for the application of economically viable solutions based on combined processes and integrated waste treatment systems. The ability of enhanced system design and flexible single process combination to form an optimized waste treatment center is crucial to set up the best process configuration with regard to lowest life cycle cost. Westinghouse’s experience in the field of radwaste treatment as well as the application of proven treatment technologies ensures the ability to form a customized radwaste treatment center, either integrated in an existing facility or as a new, free standing building that provides all relevant transport and handling equipment, interfaces, treatment equipment and temporary storage for waste packages.
Starting with the identification of the waste streams and assessment of various treatment concepts together with the Customers, the best waste treatment concept that covers all relevant waste streams will be assessed and proposed, e.g. by using the Westinghouse Simulation and Optimization software tool.
A typical example for combined waste treatment technologies is the Westinghouse Site Radwaste Treatment Facility in Sanmen (China) as well as concept variations of the SRTF for other reactors (e.g. ABWR, VVER, etc).
The purpose of this paper is to provide an overview on the Westinghouse experience to design and optimize waste treatment facilities for various types of reactors under operation or post operation/D&D condition.
Probabilistic Nonlinear Analysis of Reinforced Concrete Bubbler Tower Structure Failure
Authors: Králik Juraj 
Published: May 2014

Abstract
This paper describes the reliability analysis of concrete bubbler tower structure of nuclear power plant with the reactor WWER 440 under high internal overpressure. There is showed summary of calculation models and calculation methods for the probability analysis of the structural integrity considering degradation effects and high internal overpressure. The uncertainties of the resistance and the calculation model were taking in the account in the RSM method.
Possible Aplications of Alkali-Activated Systems in Construciton Možnosti Aplikace Alkalicky Aktivovaných Systémů Ve Stavebnictví
Authors: Boháčová Jana , Staněk Stanislav , Vavro Martin 
Published: May 2014

Abstract
This paper deals with the possibilities of using alkali-activated systems in construction. This article summarizes the advantages and disadvantages of geopolymer in comparison to Portland cement, summarizes research and practical applications of alkali-activated materials in our country and abroad, and provides an overview of directions where these alternative inorganic binders can be in the future very well applied.
Experimental Measurement of Ground Base Plate / Experimentální Měření Základové Desky Na Podloží
Authors: Čajka Radim , Buchta Vojtěch , Burkovič Kamil , Fojtík Roman 
Published: May 2014

Abstract
Analyses of interaction between the foundation slab and the subsoil has been developed for many years. For the determination of stress in foundation structure is needed to determine the influence of the stiffness respectively pliability of subsoil to structural internal forces, and vice versa, how the stiffness of the foundation structure affects the resulting subsidence. At the Faculty of Civil Engineering testing device was constructed so that the phenomena could be examined and then compared with numerical models.
Statistical Dependence of Input Variables in Doproc Method / Statistická Závislost Vstupních Veličin V Metodě Popv
Authors: Janas Petr , Martin Krejsa 
Published: May 2014

Abstract
In probabilistic tasks, input random variables are often statistically dependent. This fact should be considered in correct computational procedures. In case of the newly developed Direct Optimized Probabilistic Calculation (DOProC), the statistically dependent variables can be expressed by the socalled multidimensional histograms, which can be used e.g. for probabilistic calculations and reliability assessment in the software system ProbCalc.
Making Use of the Principle of Energy Dissipation in the Seismic Design of a Steel Structure of a Steam Boiler / Využití Principu Disipace Při Seismickém Návrhu Ocelové Konstrukce Parního Kotle
Authors: Protivínský Jiří , Krejsa Martin 
Published: May 2014

Abstract
For structural design of steel structures under seismic action there are two possible approaches of global analysis. In global analysis we can consider the structure to behave in linear elastic way or in post-elastic way with developing of plastic hinges during seismic situation. The second method is based on principle of seismic energy transformation into thermal energy. Both design methods are defined in Eurocodes but the post-elastic way is only rarely used because of design complexity. Application of this design method is presented in the entry on an example of a steam power plant boiler structure.
Aspect Ratio of Slender Web & Postbuckling Behaviour / Pomer Strán Štíhlej Steny A Pokritické Pôsobenie
Authors: Psotný Martin 
Published: May 2014

Abstract
Postbuckling analysis of slender web loaded in compression is presented. The non-linear FEM equations [14] are derived from the variational principle of minimum of total potential energy [13]. To obtain the non-linear equilibrium paths, Newton-Raphson iteration algorithm [11], [12] is used. Peculiarities of the effect of the initial imperfections [7], [8] on load-deflection paths are investigated with respect to aspect ratio of the web. Special attention is focused on the postbuckling mode of the web.