bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reinforcement learning in discrete and continuous domains applied to ship trajectory generation
Authors: Rak Andrzej , Gierusz Witold 
Published: May 2018

ABSTRACT

This paper presents the application of the reinforcement learning algorithms
to the task of autonomous determination of the ship trajectory during the
in-harbour and harbour approaching manoeuvres. Authors used Markov
decision processes formalism to build up the background of algorithm
presentation. Two versions of RL algorithms were tested in the simulations:
discrete (Q-learning) and continuous form (Least-Squares Policy Iteration).
The results show that in both cases ship trajectory can be found. However
discrete Q-learning algorithm suffered from many limitations (mainly curse
of dimensionality) and practically is not applicable to the examined task. On the other hand, LSPI gave
promising results. To be fully operational, proposed solution should be extended by taking into account
ship heading and velocity and coupling with advanced multi-variable controller.
Dynamic positioning system design for “blue lady”. simulation tests
Authors: Tomera Mirosław 
Published: May 2018

ABSTRACT

The dynamical positioning system is a complex control consisting of a number of
components, including: filters, observers, controllers, and propeller allocation systems.
The design and preliminary analysis of operational quality of system operation are usually
done based on numerical simulations performed with the aid of the mathematical model
of the ship. The article presents a concept of the dynamic positioning system applied to
steering the training ship Blue Lady used for training captains in the ship handling research
and training centre owned by the Foundation for Safety of Navigation and Environment
Protection in Ilawa/Kamionka. The simulation tests performed in the numerical environment
of Matlab/Simulink have proved the usability of the designed system for steering a ship at low speed.
Measuring system for parallel moving ships
Authors: Waszkiel Anna 
Published: May 2018

ABSTRACT

The paper introduces algorithm for determining the relative positions of two ships
manoeuvring as a pair. This algorithm also takes into account determination of angle γ,
which is difference between present approaching vessel and guidance vessel course. Relative
positioning system is a vision system based on three colours LEDs matrix and rotating
CCD camera. There are presented ways of distance calculation based on photogrammetric
methods from the known distance between the characteristic points of the real. Several
possible cases are taken into account. The considerations have been illustrated on the
basis of model of the system. These results confirm the correctness of the operation of the algorithm that
is used by the designed measuring system.
A new method for a preliminary definition of a high–performance rudder for tuna purse seiners
Authors: Martínez–López Alba , Munín–Doce Alicia 
Published: May 2018

ABSTRACT

The aim of this paper is to provide a simple method for the definition of a rudder for tuna purse seiners.
The model achieved by the application of this method ensures the manoeuvrability of initial turning,
course keeping and yaw checking. For this, the results obtained by other authors, through rudder tests and
manoeuvrability tests of fishing vessels have been integrated with the recommendations of the International
Normative. Finally, in the paper the method is applied to the case of a tuna vessel, providing a rudder model
which could be optimised with CFD (Computer Fluid Dynamics) in further tests. The method proposed
can be applied to other vessels whose main dimensions are met.
Effect of the working liquid compressibility on the picture of volumetric and mechanical losses in a high pressure displacement pump used in a hydrostatic drive part ii mechanical losses in a pump
Authors: Paszota Zygmunt 
Published: May 2018

ABSTRACT

Working liquid compressibility may considerably change the values and proportions of
coefficients of the volumetric and mechanical energy losses in the displacement pump used
in a hydrostatic drive system. This effect can be particularly seen in the operation under
high pressure and also in the system, where aeration of the working liquid can occur. In
the Part II the mathematical model is presented of the torque of mechanical losses in the
pump and its laboratory verification. Conclusions are drawn regarding the effect of working
liquid compressibility on the mechanical and volumetric losses in the pump.
Information unfitness as a factor constraining Automatic Identification System (AIS) application to anti-collision manoeuvring
Authors: Felski Andrzej , Jaskólski Krzysztof 
Published: May 2018

ABSTRACT

Common use of shipboard AIS creates conditions for the use of a new kind of dynamic data in the situation
of the risk of collision. AIS position report is a source of supplementary information derived from error
leveraged radar measurement. However, in view of the results of the studies there are opinions with regard
to inconsistent AIS dynamic data in the process of decision-making by the officer of the watch. By taking
into consideration the recordings of the studies and technical specification of AIS it can be concluded that
the results of inconsistent data have significant role in collision avoidance manoeuvring.
Proteomics of the Spermatozoon
Authors: Ballescá Jl , Oliva Rafael 
Published: May 2018

ABSTRACT
The study of the sperm proteins is crucial for understanding its normal function and alterations in infertile patients. The sperm is a highly specialized cell with a very large flagella, with little cytoplasm and a highly condensed nucleus. The most abundant proteins in the nucleus of mammalian sperm are the protamines. The main functions of the protamines are the condensation of the DNA, possibly contributing to the generation of a more hydrodynamic sperm head and to the protection of the genetic message. However, in addition to protamines, about 5.0-15.0% of the paternal genome is also complexed with histones and histone variants. It has also demonstrated a differential distribution of genes in regions associated with histone and protamine-associated regions, suggesting a potential epigenetic relevance in embryonic development. More recently, detailed lists of proteins have been described corresponding to the different compartments of the sperm cell thanks to the application of recent proteomic techniques based on mass spectrometry (MS). Differential proteomics is also being applied to identify the presence of protein abnormalities found in infertile patients
Human Seminal Plasma Proteome Study: a Search for Male Infertility Biomarkers
Authors: Davalieva Katarina , Kiprijanovska S , Noveski P , Plaseska-Karanfilska D , Plaseski T , Kocevska B 
Published: May 2018

ABSTRACT
Seminal plasma is a potential source of biomarkers for many disorders of the male reproductive system including male infertility. Knowledge of the peptide and protein components of seminal fluid is accumulating especially with the appearance of highthroughput MS-based techniques. Of special interest in the field of male infertility biomarkers, is the identification and characterization of differentially expressed proteins in seminal plasma of men with normal and impaired spermatogenesis. However, the data obtained until now is still quite heterogeneous and with small percentage of overlap between independent studies. Extensive comparative analysis of seminal plasma proteome is still needed in order to establish a potential link between seminal plasma proteins and male infertility.
Study of the Hepatitis C Virus in the Republic of Macedonia
Authors: Plaseska-Karanfilska Dijana , Kiprijanovska S , Sukarova-Stefanovska E , Noveski P , Polenakovic M , Chalovska V 
Published: May 2018

ABSTRACT
Hepatitis C virus (HCV) is a major public health problem. It is a leading cause of chronic liver disease and the most common indication for liver transplantation. The therapy for eradication of HCV infection is successful in only 50.0-80.0% of patients and is highly dependent on the HCV genotype. Molecular detection and characterization of HCV in the Republic of Macedonia started in 1990. Since then, more than 4000 samples have been analyzed at the Research Centre for Genetic Engineering and Biotechnology (RCGEB) “Georgi D. Efremov,” Skopje, Republic of Macedonia. The prevalence of HCV infections in the healthy population of the Republic of Macedonia was found to be 0.4%, while it varies between 23.0 and 43.0% in different at-risk groups of patients. The prevalence of HCV genotypes, according to associated risk factors in HCV infected patients from the Republic of Macedonia, was analyzed. We found genotype 1 to be predominant in a group of hemodialysis patients, while genotype 3 was predominant in intravenous (IV) drug users. Association of six polymorphisms in the Oligoadenylate synthetase (OASL)-like interferonstimulated gene with a sustained virological response was also analyzed. Our preliminary results suggest that non ancestral alleles in four of the six studies polymorphisms in OASL gene are associated with sustained virological response among HCV infected patients in R. Macedonia.
Molecular Genetics of Breast and Ovarian Cancer: Recent Advances and Clinical Implications
Authors: Dörk Thilo , Bogdanova N 
Published: May 2018

ABSTRACT
Over the last few years, evidence has been accumulated that several susceptibility genes exist that differentially impact on the lifetime risk for breast or ovarian cancer. High-to-moderate penetrance alleles have been identified in genes involved in DNA double-strand break signaling and repair, and many low-penetrance susceptibility loci have been identified through genome-wide association studies. In this review, we briefly summarize present knowledge about breast and ovarian cancer susceptibility genes and discuss their implications for risk prediction and therapy.
Capacitance and Leakage Current Balancing for Supercapacitive Energy Storage System / Kapacitāšu Un Noplūdes Strāvu Balansēšana Superkondensatoru Enerģijas Uzkrājējsistēmai
Authors: Latkovskis L. , Sirmelis U. , Grigans L. , Cernovs J. , Kroics K. 
Published: May 2018

Abstract
In the paper, the problem of voltage imbalance in supercapacitor bank caused by different capacitances and leakage resistances is considered. The authors propose capacitance balancing in combination with passive resistor voltage balancing as an efficient method for decreasing the cell voltage imbalance and increasing the effective energy capacity of supercapacitor bank. The efficiency of the method is demonstrated theoretically and verified experimentally on eight supercapacitor cells.
Epr Spectrum Angular Dependences In Liyf4 Crystal / Epr Spektru Leņķiskās Atkarības Liyf4 Kristālā
Authors: Antuzevics A. , Fedotovs A. , Rogulis U. 
Published: May 2018

Abstract
Electron paramagnetic resonance (EPR) measurements have been made for two perpendicular planes in a LiYF4 crystal before and after x-ray irradiation at room temperature. Analysis of the EPR spectrum angular dependence shows the presence of two defects - an impurity ion, which was embedded during the crystal growth process, and an x-ray induced defect with the g-factor of approx. 2.0. Spectral parameters and possible defect models are discussed.
The Right to Privacy and Private Detective Activities in Lithuania
Authors: Bilius Mindaugas 
Published: May 2018

ABSTRACT
Private detectives have been providing their services in Lithuania for about a decade; however, only now has the Seimas of the Republic of Lithuania started to discuss whether it is expedient and necessary to regulate the activities of private detectives by means of a separate law. One of the goals of a separate legal regulation of private detective activities is the protection of human rights, particularly the right to privacy. This article examines the provisions of national and international legislative acts related to the private life of a person, and assesses the opportunities of a private detective to provide private detective services without prejudice to the provisions of applicable legislative acts. The article concludes that a private detective is not an authorized (public) authority and there is no possibility to assess in each case whether the interests of a person using the services of private detectives are more important than those of other persons, which would allow for violating their rights to private life. The limits of an individual’s right to privacy can only be narrowed by a particular person, giving consent to making public the details of his/her private life. It is the only opportunity for a private detective to gather information related to the private life of a citizen. Currently applicable legislative acts in Lithuania do not provide for opportunities for private subjects to collect personal data without that person’s consent. This right is granted only to public authorities and with the court’s permission
Scientists of the State, Science of the State, and the State: Austrian and German Public Lawyers in the Short 20th Century Part 1: The Age of Catastrophe, 1914-1945
Authors: Puff Roman 
Published: May 2018

ABSTRACT
Between the First World War and the end of the Cold War, Germany and Austria, whose legal cultures were highly interdependent in terms of persons, conceptions, and institutions, saw eleven or twelve fundamentally different regimes, depending on the interpretation of Austria’s status from 1938-45. Lawyers often ensured the legal functioning of these regimes and legitimized their existence. This again affected their notions of law, legality, and justice, and of the principles underlying these concepts, as well as their personal preferences and societal roles.
Based on the analysis of about two hundred biographical sketches of Austrian and German lawyers, mostly from the field of public (international) law, of about 2,500 contributions to the leading “(Österreichische) Zeitschrift für öffentliches Recht” from 1914 to 1945, and of the respective legal history-literature, this contribution analyzes the relation of Austrian and German lawyers to their respective states and regimes, and outlines the typical patterns of how they were affected by regime changes and how they reacted to them.
Proceeding from this analysis, in the second part of this study, the relation between lawyers and the state until the end of the cold war will be illustrated and it will be shown that some typical patterns in the lawyers’ reaction to regime changes can be identified. Also the impact the state-lawyers-relation had on the development of Austria and Germany to stable, functioning democracies will be outlined.
Book Reviews: Rebel Cities; States of War: Enlightenment Origins of the Political; and the Communist Postscript
Authors: Giedraitis Edvardas , Kalpokas Ignas , Bundza Mindaugas 
Published: May 2018

ABSTRACT
This article contains three book reviews, each of which relates in its own way to the larger academic category of political theory. The reviewed books are: Rebel Cities (2012) by David Harvey, States of War: Enlightenment Origins of the Political (2012) by David William Bates, and The Communist Postscript (2009) by Boris Groys.
Health statistics in international databases and their cartographic visualization
Authors: Štampach Radim , Geryk Edvard 
Published: May 2018

Abstract.
For health system management, relevant data and information are necessary. The first part of the paper describes databases of the important health data providers WHO, OECD, IARC and Eurostat. It analyses whether they are in discrepancy and whether it is possible to combine data from different databases. Cartographic visualization can be used for the analysis of situations and also for the publishing of statistics and other information. Selected international providers offering health maps are evaluated in the second part of the paper. There are differences in the possibilities offered to the user and in the quality of the provided maps.
Why Put ‘Class’ in the Creative Class?
Authors: Mo Aaron 
Published: May 2018

Abstract
This paper pinpoints the problematic use of grouping creative people as a social class. Observations of the ‘creative clusters’ in Lower East Side (New York) and Islington Mill (Manchester) are used to illustrate this point. Instead, creative actors should be seen as a unique blend of work practices, and have different philosophical and aesthetic appreciation of art, which in turn influences their spatial and geographical consumption patterns inside a building and/or city. This observation questions the use of ‘class’ in Richard Florida’s (2002) The rise of the Creative Class, and consequently asks if place-making practitioners should adopt one-size-fits-all creative policies
Creative Firms as Change Agents in Creative Spaces
Authors: Kourtit Karima , Nijkamp Peter 
Published: May 2018

Abstract
This paper focuses attention on a quantitative analysis of the creative sector. After a selective and concise literature review, it discusses three important methodological advances, viz. a spatial-econometric approach, a non-parametric business performance analysis based on Data Envelopment Analysis, and finally, a comprehensive and integrated modelling framework in which a so-called ‘Flying Disc’ model is used as a tool for specifying and estimating a Structural Equations Model. The paper offers finally some concluding remarks.
Towards a ‘Benchmarking Raster’: a Selection of Indicators to Measure and Assess Policies for Cultural and Creative Industries
Authors: Montalto Valentina , Iglesias Maria , Kern Philippe 
Published: May 2018

Abstract
Research has devoted considerable attention to the contribution of cultural and creative industries (CCIs) to economic growth and innovation. Measuring and evaluative tools have played an increasingly important role in meeting the demand for the accountability of public money supporting this sector. Nevertheless, creativity remains an elusive subject for policy-makers. One of the major obstacles in adopting CCI policies is the difficulty in apprehending the value of support actions for cultural and creative enterprises. The present research is a first attempt to create a harmonised and simple set of indicators (the ‘benchmarking raster’) to assess local policies targeting economic development of CCIs. It has been completed in the framework of the INTERREG- funded CREA.RE network with the aim to encourage the authorities of small and medium-sized cities and regions to further invest Structural Funds in CCIs. It is also expected to contribute to CCI-focused economic development strategies (or Smart Specialisation Strategies).
Gaussian semigroups on homogeneous banach spaces
Authors: Duchoň Miloslav 
Published: May 2018

Abstract
The object of this paper is a study of a Cauchy problem by Gaussian semigroups methods on the 2π-torus in the setting of homogeneous Banach spaces. The approach is similar to that in: [Butzer, P. L.-Berens, H. Semi-Groupsof Operators and Approximation. Springer-Verlag, Berlin, 1967].
The zodiac killer ciphers
Authors: Raddum Håvard , Sýs Marek 
Published: May 2018

ABSTRACT
We describe the background of the Zodiac killer’s cipher, and present a strategy for how to attack the unsolved Z340 cipher. We present evidence that there is a high degree of non-randomness in the sequence of ciphertext symbols in this cipher, suggesting it has been constructed in a systematic way. Next, we use this information to design a tool for solving the Zodiac ciphers. Using this tool we are able to re-solve the known Z408 cipher.
A point estimator of the probability difference of overall treatment effect–simulation study
Authors: Krajíčková Pavla 
Published: May 2018

ABSTRACT
One of the aims of the meta-analysis of clinical trials is to deter- mine the efficacy of a new type of treatment. This efficacy is commonly measured by the difference between the efficacy of a standard treatment and the new treatment. For binary data the difference can be measured by a probability difference. We investigate, by simulations and using box plots, the basic statistical properties of the point estimator of the probability difference of overall treatment effects in the meta-analysis based on multicentre trials for various chosen situations. This estimator was suggested in Dokoupilova (2011).
Criterion-robust designs for the models of spring balance weighing
Authors: Filová Lenka , Harman Radoslav 
Published: May 2018

ABSTRACT
In the paper we consider the linear regression model of the first degree on the vertices of the d-dimensional unit cube and its extension by an intercept term, which can be used, e.g., to model unbiased or biased weighing of d objects on a spring balance. In both settings, we can restrict our search for approximate optimal designs to the convex combinations of the so-called j-vertex designs. We focus on the designs that are criterion robust in the sense of maximin efficiency within the class of all orthogonally invariant information functions, involving the criteria of D-, A-, E-optimality, and many others. For the model of unbiased weighing, we give analytic formulas for the maximin efficient design, and for the biased model we present numerical results based on the application of the methods of semidefinite programming.
Estimation of ma(1) model based on rounded data
Authors: Guo Meihui , Li Gen-Liang 
Published: May 2018

ABSTRACT
Most recorded data of continuous distributions are rounded to the nearest decimal place due to the precision of the recording mechanism. This rounding entails errors in estimation and measurement. In this study, we consider parameter estimation of time series models based on rounded data. The adjusted maximum likelihood estimates in [Stam, A.-Cogger, K. O.: Rounding errors in autoregressive processes, Internat. J. Forecast. 9 (1993), 487-508] are derived theoretically for the first order moving average MA(1) model. Simulations are performed to compare the efficiencies of the adjusted maximum likelihood estimators with other estimators.
Planning of experiments for a nonautonomous ornstein-uhlenbeck process
Authors: Lacko Vladimír 
Published: May 2018

ABSTRACT
We study exact optimal designs for processes governed by mean- -reversion stochastic differential equations with a time dependent volatility and known mean-reversion speed. It turns out that any mean-reversion It¯o process has a product covariance structure.We prove the existence of a nondegenerate optimal sampling design for the parameter estimation and derive the information matrix corresponding to the observation of the full path. The results are demonstrated on a process with exponential volatility.
Notes on A Preimage-Resistant Hash Function
Authors: Folláth János 
Published: May 2018

ABSTRACT
Bérczes, Folláth and Pethő constructed a preimage-resistant hash function. In this paper to investigate the avalanche criterion of this function, we will generalize the results of Coulter and Mathews regarding planar polynomials. At the same time a necessary and sufficient condition for being planar is given for Dembowski-Ostrom monomials. In the even characteristic case both a weaker asymptotic statement and practical test results are presented regarding the avalanche criterion.