bluuebunny/crossref_metadata_2025_split huggingface dataset:
Asymptotic Properties of Third-Order Nonlinear Differential Equations
Authors: Baculíková Blanka , Džurina Jozef 
Published: May 2018

Abstract
We present new criteria guaranteeing that all nonoscillatory solutions of the third-order functional differential equation

tend to zero. Our results are based on the suitable comparison theorems. We consider both delay and advanced case of studied equation. The results obtained essentially improve and complement earlier ones.
Model of Stabilizing of the Interest Rate on Deposits Banking System Using by Moment Equations
Authors: Dzhalladova Irada , Michalková Mária , Růžičková Miroslava 
Published: May 2018

Abstract
The paper deals with a system of difference equations, where coefficients depend on Markov chains. The functional equations for particular density and the moment equations for the system are derived and used in the investigation of solvability and stability. An application of the results is shown how to solve various economic problems.
Conditions for Factorization of Linear Differential-Difference Equations
Authors: Janglajew Klara R. , Valeev Kim G. 
Published: May 2018

Abstract
The paper deals with a linear system of differential equations of the form

with constant coefficients, a small parameter and complex deviating argument. Sufficient conditions for factorizing of this system are presented. These conditions are obtained by construction of an integral manifold of solutions to the considered system.
In the shadow of the urban regeneration megaproject: Urban transitions in downtown Łódź, Poland
Authors: Kazimierczak Jarosław , Kosmowski Piotr 
Published: May 2018

Abstract
The Nowe Centrum Łodzi project that was completed in 2007 in Łódź, Poland is one of the biggest contemporary large-scale urban (re)development projects in Europe and the largest project of this type in Central Europe. The principal goals of the mega-project in question include the regeneration of degraded post-industrial and post-railway land in the city centre of Łódź and the enhancement of competitiveness and the metropolitan position of the city. The authors seek to identify spatial and functional changes at a mezo-scale, i.e. in the so-called immediate neighbourhood of the urban regeneration megaproject (URMP), which have accompanied the implementation of the Nowe Centrum Łodzi project over the years 2013–2016. The other aim was to classify urban areas neighbouring the URMP based on features of spatial and functional transformation identified in these areas. The studies allowed the researchers to identify three categories of urban area in the immediate neighbourhood of the URMP which revealed differences in spatial and functional transformations. We indicated that the transformation of the immediate neighbourhood of the URMP involved not only the local authorities responsible for the overall improvement of the quality of public space but also other users, inter alia, residents, local urban activists, the business community, public institutions, and NGOs, that in most cases complemented efforts initiated by the Municipality. From the methodological point of view the authors use a case study including desk research, an urban planning inventory, and direct observation.
Simple method of copper analysis using monosodium glutamate and its application in ore analysis
Authors: Prasetyo Erik 
Published: May 2018

AbstractA simple photometric method for copper (II) analysis using monosodium glutamate (MSG) is presented. The method is technically simple, inexpensive, quantitative, and makes use of readily available reagents. The rapid reaction of copper (II) with glutamate in aqueous solution at pH 10 to form a blue complex serves as a basis for the determination of copper (II) in the range of 10-500 μg/ml. Copper recovery is > 82%. The method could be used to determine copper (II) concentrations in iron ore samples.
Polymetallic mineralization in Ediacaran sediments in the Żarki-Kotowice area, Poland
Authors: Karwowski Łukasz , Markowiak Marek 
Published: May 2018

AbstractIn one small mineral vein in core from borehole 144-Ż in the Żarki-Kotowice area, almost all of the ore minerals known from related deposits in the vicinity occur. Some of the minerals in the vein described in this paper, namely, nickeline, hessite, native silver and minerals of the cobaltite-gersdorffite group, have not previously been reported from elsewhere in the Kraków-Lubliniec tectonic zone. The identified minerals are chalcopyrite, pyrite, marcasite, sphalerite, Co-rich pyrite, tennantite, tetrahedrite, bornite, galena, magnetite, hematite, cassiterite, pyrrhotite, wolframite (ferberite), scheelite, molybdenite, nickeline, minerals of the cobaltitegersdorffite group, carrollite, hessite and native silver. Moreover, native bismuth, bismuthinite, a Cu- and Ag-rich sulfosalt of Bi (cuprobismutite) and Ni-rich pyrite also occur in the vein. We suggest that, the ore mineralization from the borehole probably reflects post-magmatic hydrothermal activity related to an unseen granitic intrusion located under the Mesozoic sediments in the Żarki-Pilica area.
Decision support system for collision avoidance at sea
Authors: Lazarowska Agnieszka 
Published: May 2018

ABSTRACT

The paper presents design and realization of computer decision support system in collision
situations of passage with greater quantity of met objects. The system was implemented
into the real ship electro-navigational system onboard research and training ship m/v
HORYZONT II. The radar system with Automatic Radar Plotting Aid constitutes a source
of input data for algorithm determining safe trajectory of a ship. The article introduces
radar data transmission details. The dynamic programming algorithm is used for the
determination of safe optimal trajectory of own ship. The system enables navigational
data transmission from radar system and automatic determining of safe manoeuvre or safe
trajectory of a ship. Further development of navigator’s decision support system is also presented. Path
Planning Subsystem is proposed for the determination of global optimal route between harbours with the
use of Ant Colony Optimization algorithms.
Control system for trials on material ship model
Authors: Pomirski Janusz , Rak Andrzej , Gierusz Witold 
Published: May 2018

ABSTRACT

The paper presents software environement for fast
prototyping and verification of motion control systems for
ship. The environement is prepared for isomorphic reduced
ship model which is used for training and in research in
a area of ship motion control. The control system is build
using Matlab-Simulink-xPC package which simplifies
and accellerates design and verification of new control
algorithms. The systems was prepared also for Hardwarein-
the-loop trials when a designed control system is tested inside a virtual environment instead of real
actuators, disturbances, communication and measurement devices.
Linear Matrix Inequalities in multivariable ship’s steering
Authors: Rybczak Monika 
Published: May 2018

ABSTRACT

This paper explains the basics of the Linear Matrix Inequalities (LMI), with examples of
simulations and calculations created in Matlab/Simulink programming environment where
the controlled plant is the “Blue Lady” ship model. First chapter of this paper gives a short
overview of publications describing the use of Linear Matrix Inequalities method. Second
chapter contains basic definitions and equations for the LMI method. Chapter three presents
the use of LMI method for ship control by describing controller synthesis for the “Blue
Lady”. Chapter four compares the operation of two controllers, the first one consisting of
three independent proper adjusted PID controllers and the second one being a multivariable LMI controller.
Finally conclusions from the above comparison are drawn.
The branch-and-bound method and genetic algorithm in avoidance of ships collisions in fuzzy environment
Authors: Mohamed-Seghir Mostefa 
Published: May 2018

ABSTRACT

Marine navigation consists in continuous observation of the situation at sea, determination
the anti-collision manoeuvre. So it necessary to determine ship safe trajectory as a sequence
of ship course changing manoeuvres. Each manoeuvre is undertaken on the basis of
information obtained from the anti-collision system ARPA. This paper describes a method
of safe ship control in the collision situation in a fuzzy environment based on a branch
and bound method and a genetic algorithm. The optimal safe ship trajectory in a collision
situation is presented as multistage decision-making process
Nonlinear observers design for multivariable ship motion control
Authors: Tomera Mirosław 
Published: May 2018

ABSTRACT

This paper presents the designs of two observers, which are: the extended Kalman filter
and the nonlinear passive observer. Based on the measured values of ship position and
heading, the observers estimate the surge, sway and yaw velocities of the ship motion.
The observers make use of the simplified nonlinear mathematical model of ship motion in
which the neglected ship dynamics and disturbances are modelled using bias. The designed
observers firstly have been simulated on a computer model where their parameters were
calibrated, and then were implemented on the physical model of the training ship “Blue
Lady” in the ship handling centre in Ilawa-Kamionka. The comparative analysis was
done with respect to the estimated variables describing the ship motion in three directions: surge, sway
and yaw
Computational model for simulation of lifeboat motions during its launching from ship in rough seas
Authors: Dymarski Paweł , Dymarski Czesław 
Published: May 2018

ABSTRACT

This paper presents a computational model which describes motion of an object of six degrees of freedom
(DoF), intended for simulation of spatial motion of one- or two- rope-sling lifeboat or rescue boat during
its launching from ship in rough sea. This is a complex model which accounts for sea conditions as well
as elasticity and damping properties of davit’s elements and mechanisms, rope and boat hull. Also, are
presented results of example calculations for an assumed set of technical parameters of davit and boat as
well as sea conditions.
Research on hydrodynamic properties of annular cavitator with water injection
Authors: Jiang Zhenyu , Xiang Min , Lin Mingdong , Zhang Weihua , Zhang Shuai 
Published: May 2018

ABSTRACT
Annular cavitator with water injection is one of the key parts of the long-range supercavitating vehiclepowered by water ramjet. In this paper, hydrodynamic properties of annular cavitator are studiednumerically. The standard k ~ ε turbulence model is coupled with the Reynolds Averaged Navier-Stokes(RANS) equations to model the natural supercavitation process. The multiphase flow is considered asa mixture of varying density and modeled by the mass exchange equations. To fully understand this process,numerical simulations were performed for different annular cavitators. Computational Fluid Dynamics(CFD) results, including the pressure distribution and forces acting on the cavitator surface, mass flowand pressure loss of water injection, various supercavity sizes, were obtained and analyzed. The pressuredistribution on the cavitator surface was significantly changed which resulted in 4 ~ 6% increase of thetotal drag of the vehicle. The results show that the mass flow and velocity of the injection water is mainlydependent on the tube size, while the total pressure loss of the water injection is mostly related to the outletpressure. Supercavity generated by annular cavitator is smaller than that of the discal one. Based on thecorrelation analysis of the supercavity size and other factors, it could be concluded that the contraction ofthe cavity size is mainly caused by the diffluent mass flow of the water injection.
Assessment of possible application of waterlubricated sintered brass slide bearing for marine propeller shaft
Authors: Litwin Wojciech , Olszewski Artur 
Published: May 2018

ABSTRACT

Water-lubricated bearings have been applied to support ship screw shafts for over a hundered years.
Development of plastic materials has caused that novel sliding polymers appeared available on the market
and being approved by classification institutions, possible to be applied in shipbuilding. However in the
subject - matter literature there is no reference to application of bearings fitted with metal or ceramic
bushes in shipbuilding. Nevertheless they have important merits such as low resistance to motion, long
service life or stability of form. But some doubts are evoked by their large value of shape elasticity module
which can lead to local stress concentration at the bush edges in the case of non-axiality of bush and shaft
axes. Hence this work has been aimed at the testing of a bearing made of bronze-graphite silter. In the
work is presented a comparison of measurement results of resistance to motion , hydrodynamic pressure
distributions in lubricating film as well as shaft axis trajectories of the bearing, with those made for a typical
elastic polymer bearing. The measurement results have showed high quality of the tested material. In the
opinion of these authors it could be applicable to bearing ship propeller shafts.
The effect of liquid temperature and viscosity on the amplitude-frequency characteristics of a viscotic torsion damper
Authors: Homik Wojciech 
Published: May 2018

ABSTRACT

The article discusses causes of the appearance of transverse, longitudinal and torsional
crankshaft vibrations in multi-cylinder internal combustion engines. Particular attention
is paid to the torsional vibration which is the most severe threat to engine crankshafts.
Damping methods making use of torsion dampers are presented. With the reference to
viscotic dampers, problems with their damping efficiency are discussed in the context of
viscosity changes of the damping liquid. The article also presents the amplitude-frequency
characteristics of a series of viscotic dampers, which were recorded experimentally on the
research rig and on a real object. An idea of vibration damper metric is given.
Data fusion in a navigational decision support system on a sea-going vessel
Authors: Borkowski Piotr 
Published: May 2018

ABSTRACT

The problem of data fusion in a navigational decision support system on a sea-going vessel
has been analyzed. The computing algorithm herein applied for solving the formulated
problem is based on a multi-sensor Kalman filter. On the practical side, results of the
tests done in real conditions are shown. The tests conducted onboard m/s Nawigator XXI,
have been aimed at the verification of the proposed computing algorithm implemented in
a prototype navigational decision support system.
Genetics of non Syndromic Hearing Loss in the Republic of Macedonia
Authors: Sukarova Stefanovska Emilija , Plaseska Karanfilska D , Cakar M , Filipce I 
Published: May 2018

ABSTRACT
Hearing impairment is the most common sensory deficit in humans affecting 1 in 1000 newborns. When present in an infant, deafness may have dramatic effects on language acquisition, seriously compromising the quality of their life. Deafness is influenced by both genetic and environmental factors, with inherited causes as the most prominent etiological factor in deafness in developed countries. The genetic basis of hearing loss is complex with numerous loci and genes underlying hereditary sensoryneural non syndromic hearing loss (NSHL) in humans. Despite the wide functional heterogeneity of the genes, mutations in the GJB2 gene are found to be the most common cause of sporadic and recessive NSHL in many populations worldwide. Molecular characterization of deafness in the Republic of Macedonia was performed in 130 NSHL profoundly deaf children from different ethnic origins. Molecular studies included direct sequencing of the GJB2 gene and specific polymerase chain reaction (PCR) analyses for the del(GJB6- D13S1830) mutation. Five common mitochondrial DNA (mtDNA) mutations [A1555G, 961delT+ C(n), T1095C, C1494T and A827G] were also analyzed using the SNaPShot method. In preliminary studies, GJB2 gene mutations were found in 36.4% of analyzed patients, with predominance of 35delG in Macedonian and Albanian patients and W24X in Gypsy patients, respectively. No del(GJB6- D13S1830) mutation was found. None of the analyzed deafness-associated mutations in mtDNA were identified in the studied patients
Molecular Diagnostics of ß-Thalassemia
Authors: Plaseska-Karanfilska Dijana , Atanasovska B , Bozhinovski G , Chakalova L , Kocheva S , Karanfilski O 
Published: May 2018

ABSTRACT
A high-quality hemoglobinopathy diagnosis is based on the results of a number of tests including assays for molecular identification of causative mutations. We describe the current diagnostic strategy for the identification of b-thalassemias and hemoglobin (Hb) variants at the International Reference Laboratory for Haemoglobinopathies, Research Centre for Genetic Engineering and Biotechnology (RCGEB) “Georgi D. Efremov,” Skopje, Republic of Macedonia. Our overall approach and most of the methods we use for detection of mutations are designed for the specific target population. We discuss new technical improvements that have allowed us to substantially reduce the average time necessary for reaching a conclusive diagnosis.
Choice of the Optimum Cross-Sections for 20–110–330 kV Overhead Lines Under Market Conditions / 20–110–330 Kv Gaisvadu Līniju Optimālo Šķērsgriezumu Izvēle Tirgus Apstākļos
Authors: Guseva S. , Petrichenko L. 
Published: May 2018

Abstract
Approach is proposed to the choice of overhead line cross-sections that would be optimal under market conditions. For this purpose, in the design practice and at network reconstruction two methods exist: of the economic current density, and of the economic intervals. As of now, none of them works properly, since the cost of electrical materials, of building and construction as well as the total investments in a line are determined by the market prices. Therefore, a modified economic intervals’ method has been developed that can work under market conditions. The method allows also considering the discrete character of standard cross-sections for the lines and concrete technical and technically-economic parameters. For practical application of the proposed method, universal economic nomograms for 20-110-330 kV overhead lines have been calculated and constructed. In the paper, a user interface is proposed for realization of the modified method in Matlab environment.
Boosting Indonesia’S Creative Industries: Identification of People’S Characteristics and Creative Behaviour
Authors: Setiadi Nugroho J. , Boediprasetya Agoestiana , Wahdiaman  
Published: May 2018

Abstract
The purpose of this paper is to suggest an empirical model to assess personal characteristics and creative behaviour among creative workers in Indonesia’s creative industries. It is critical for people to do their best to ensure and realise that creativity is one of the most important elements in order to achieve high performance. Although a few previous studies have focused on the understanding of how the myriad of interacting potential creators can foster their performance, the characteristics and behaviour patterns of Indonesia’s creative workers are not well identified yet. Considering this, a new measure has been developed and evaluated with a group of creative workers (N = 220). This study presents data supporting the reliability (internal consistency) and validity (criterion and construction) of this multidimensional instrument. The results of factor analysis indicated a fivefactor solution. These factors demonstrated adequate internal consistency and correlations with the established measures of the Big-Five personality (e.g. the NEO-FFI of Costa & McCrae 1992). It was found that the most important elements determining the characteristics of creative people are enthusiasm, a low depression level, self-discipline, trust, and ideas.
Cultural Quarters as a Means of Enhancing the Creative Capacity of Polish Cities? Some Evidence from Cracow
Authors: Murzyn-Kupisz Monika 
Published: May 2018

Abstract
Culture-oriented activities conducted by diverse actors in selected urban areas may lead to the formation of unique quarters of production and consumption of cultural goods and services which function both as creative hubs and leisure spaces. Such cultural quarters may develop spontaneously or as a result of official designation and major public investment. Referring to the debate on cultural quarters in Western Europe, this article aims to examine the issue of the spatial concentration of cultural and creative activities within a selected large city in Poland. The author analyses recent transformations of two historic quarters in Cracow (Kazimierz and Podgórze) and considers the extent to which both areas can be regarded as successful cultural quarters. She describes their emergence and the changes observed in them in terms of groupings, character and number of creative-sector firms established there, pondering whether their role is limited to a function as centres of commercial cultural entertainment and night-life consumption, or whether they indeed stimulate the development of a creative economy.
Pseudo-Archaic English: the Modern Perception and Interpretation of The Linguistic Past
Authors: Traxel Oliver M. 
Published: May 2018

Abstract
This paper introduces a new project currently in its planning stages.1 It is dedicated to pseudoarchaic English, an area in linguistic studies which has so far hardly received any academic attention. After providing some historical examples a brief selection of some present-day occurrences as well as inspirational sources for these is given. Sample cases of pseudo-archaic English from various linguistic categories are presented in order to illustrate the wide range of its usage. Some remarks on modern perceptions of the linguistic past and their role in creating pseudo-archaic forms are provided and followed by suggestions on what still needs to be done in this field.
K-nearest neighbour kernel density estimation, the choice of optimal k
Authors: Orava Jan 
Published: May 2018

ABSTRACT
The k-nearest neighbour kernel density estimationmethod is a special type of the kernel density estimation method with the local choice of the bandwidth. An advantage of this estimator is that smoothing varies according to the number of observations in a particular region. The crucial problem is how to estimate the value of the parameter k. In the paper we discuss the problem of choosing the parameter k in a way that minimizes the value of the asymptotic mean integrated square error (AMISE). We define the class of the modified cosine densities that meet the requirements given by the AMISE. The results are compared in a simulation study.
Curvature of Cr Manifolds
Authors: Bejancu Aurel , Farran Hani Reda 
Published: May 2018

Abstract
We prove the existence and uniqueness of a torsion-free and h-metric linear connection ▽(CR connection) on the horizontal distribution of a CR manifold M. Then we define the CR sectional curvature of M and obtain a characterization of the CR space forms. Also, by using the CR Ricci tensor and the CR scalar curvature we define the CR Einstein gravitational tensor field on M. Thus, we can write down Einstein equations on the horizontal distribution of the 5-dimensional CR manifold involved in the Penrose correspondence. Finally, some CR differential operators are defined on M and two examples are given to illustrate the theory developed in the paper. Most of the results are obtained for CR manifolds that do not satisfy the integrability conditions