bluuebunny/crossref_metadata_2025_split huggingface dataset:
Choosing a Proper Maintenance and Repair Strategy for Tractors (in Urmia)
Authors: Pourdarbani Razieh 
Published: April 2019

Abstract
Maintenance plays an important role in reliability, availability, production quality, risk reduction, efficiency increasing, equipment security, etc. Therefore, maintenance strategies have a special position in industry. Simultaneously, effect of tractor power is considerable in agriculture; therefore, it is necessary to pay attention to the probability of failure, repair time and causes of malfunctioning. Many variables, including cost, depreciation, breakdowns, annual performance, etc., have major impact on tselection of a maintenance strategy. Therefore, these variables were determined with the help of experts. Subsequently, these were clustered into several main criteria groups on the basis of factor analysis using SPSS software. Obtained results were used in a hierarchical structure to suggest the most appropriate maintenance strategy based on pair-wise comparison. According to the regional conditions and available facilities, results showed that the proactive maintenance strategy proved to be the best suggested option from four maintain strategies, namely emergency maintenance, proactive maintenance, preventive maintenance, predictive maintenance.
Mortality of Broiler Chickens During Summer Fattening Periods Affected by Microclimatic Conditions
Authors: Šranková Veronika , Lendelová Jana , Mihina Štefan , Žitňák Miroslav , Nawalany Gregorz 
Published: April 2019

Abstract
Mortality of chickens during two summer fattening periods L1 and L2 in commonly used halls for chicken fattening in Slovakia have been evaluated in this paper. Effect of microclimatic conditions in housing area on recorded mortality has been analysed. Mortality was assessed in six halls, microclimate parameters and surface temperatures were continually measured only in one of the middle halls. It was documented that high mortality occurred during summer in the last phase (P3) of fattening period due to sudden hot weather waves. Daily mortality rate varied up to 447 birds in evaluated hall 3. During the last third of both fattening periods, it was significantly higher than during the first two phases (P

L1 = 0.0036; P

L2 = 1.4·10−6). Differences among halls were insignificant (P

L1 = 0.614; P

L2 = 0.413). In L1, average daily temperatures went beyond the recommended temperatures from 21st to 31st day. During L2, it was from 29th to 31st day and from 36th to 38th. The extra high mortality occurred in L1 on 31st day (447 birds) and during L2 on 36th day (88 birds), 37th day (96 birds) and 38th day (155 birds). High differential temperatures have been recorded and uninterrupted time periods (6 hours or more) with temperature higher than 30 °C and/or the relative humidity (RH) exceeding 70% were occurred during these days. In order to eliminate effect of sudden hot weather waves, modern digitally controlled microclimate regulation technologies (heat pumps, floor cooling, etc.) can be used, supported by data obtained from detailed microclimate analysis documented in this paper.
Prenatal diagnosis of a new case: De novo balanced non-Robertsonian translocation involving t(15;22)(p11.2;q11.2)
Authors: Atli Eİ , Gurkan H , Atli E , Tozkir H , Varol GF , İnan C 
Published: April 2019

Abstract
The balanced non-Robertsonian translocation (ROB) associated with acrocentric chromosomes is an unusual phenomenon. We report the case of rare non-ROB involving chromosomes 15 and 22 with cytogenetic and molecular cytogenetic findings of 46,XY,t(15;22)(p11.2;q11.2). To the best of our knowledge, t(15;22) is the first report of this breakpoint that is not the usual non-ROB. The karyotype of the chorionic villus cell was 46,XY,t(15;22)(p11.2; q11.2) from two different initial cultures. This is different from the usual non-ROB of acrocentric chromosomes. Comparative genomic hybridization has been performed to determine the chromosomal origin. Non-Robertsonian translocation associated with acrocentric chromosomes is an unusual event and only a few cases have been reported. In this study, we observed acrocentric chromosomes 15 and 22 as a rarely balanced non-ROB, where satellites of chromosome 15 translocated to chromosome 22 and part of chromosome 22 were translocated to chromosome 15. To the best of our knowledge, our patient is the first case reported in the literature for this translocation in prenatal and postnatal periods.
Review on the role of geoelectrical surveys in characterizing and deriving the constraints and hydrogeological conditions in semi arid Khanasser Valley region in Syria
Authors: Asfahani Jamal 
Published: April 2019

Abstract
This paper is a general review which basically focuses on the role of geoelectrical surveys in characterizing and deriving the constraints and hydrogeological conditions in semi arid Khanasser valley region and its surroundings in Northern Syria. Schlumberger configuration has been used to carry out ninety six vertical electrical soundings VES, distributed on nine transverse and three longitudinal profiles. Their quantitative 1D interpretations with different techniques yield to develop several alternative approaches, that enable us to derive and determine the hydrological parameters of the structures controlled by the groundwater distributions. Two different northern and southern geological structures separated by Hobs-Serdah water divided line were electrically characterized. Both of them are of very conductive zones of a resistivity less than 4 Ωm, and related to the intrusion of salty water in Quaternary and Paleogene aquifers. The qualitative interpretation of the iso-apparent resistivity maps for different AB/2 spacings has allowed the delineation of those two structures. Those two identified structures have their evident influences on the distributions of thicknesses, resistivity, salinity, hydraulic conductivity, and transmissivity of both Quaternary and Paleogene aquifers. The high resistivity exceeding 300 Ωm on the measured VES is a very good signal of the presence of basalt formation of upper Miocene age in Jebel Al Hass in the west and Jebel Shbith in the east. The geometry and the electrical characteristics of Quaternary and Paleogene aquifers and the top of Maestrichtian have been well recognized. Quaternary paleosabkhas, fractured zones and tectonic features of the subsurface of Khanasser valley have been delineated through analyzing VES distributions along the executed longitudinal and transverse profiles. Different empirical relationships have been already established through coupling geoelectrical resistivity and hydrochemical data, which allows to derive and establish different salinity maps for different AB/2 spacings, and to outline the boundaries between fresh, brackish and saline waters. Two different alternative approaches have been also developed for geophysically computing and estimating the hydraulic conductivity and the transmissivity of the aquifers in the study region. The different hydrogeophysical approaches developed in this integrated geophysical research project for water resource management have been successfully applied in Khanasser valley, and can be recommended to be practiced in similar worldwide areas.
Autobiographies or Portraits? Methodological Differences in Qualitative Social Research
Authors: Giordano Christian 
Published: April 2019

Abstract
The author considers methodological differences in the use of autobiographies. However, while doing so, he does not focus on technical differences in the application of the method but asks about cognitive possibilities that come (or not) with certain methodological tools. It is through this perspective (epistemological capacity of theory and empirical knowledge) that the author discusses the difference between two very close and yet so separate methods of research: sociological autobiography and anthropological portrait. He refers to Florian Znaniecki’s methodological guidelines and juxtaposes them with other important sociological works. Analysing Znaniecki’s method, he finds elements that make it seem closer to anthropological portrait. This approach is to encourage the readers to look at the method in a different way – as something secondary to the accurate definition of the socio-cultural context for the studied phenomena.
After a Long March: the Results of Two Decades of Rural Restructuring in Hungary
Authors: Csurgó Bernadett , Kovách Imre , Megyesi Boldizsár 
Published: April 2019

Abstract
This paper aims to show the main processes of rural restructuring of Hungary after the change of political system and EU integration. It describes the changes of agricultural land-use, new dynamics of urban rural relations and rural development of the last 25 years. In the paper, we argue that the most dynamic changes happened in the era of post-communism, ended by EU-accession and the era of consolidation.
A characteristic phenomenon of these changes was the urban demand for providing facilities related to rural landscape and culture. Therefore, permanent and temporary migrations into rural areas have become the most important element of development for rural places in the last decades. The introduction of a new Europeanised rural development system has shaped these processes and reconfigured local power relations, economic and social networks. These turbulent changes occurred at the same time with the collapse of the socialist-type co-operative and state farm system, along with the restitution and reprivatisation of land, resulting in the concentration of land use and agricultural production.
The paper aims at analysing these processes by discussing the dynamics of urban-rural relationships and the new rural development system, while the final part focuses on land-use changes and its impacts on rural society.
Think Locally and Act Globally: Understanding Human Development in the Era of Globalisation
Authors: Klekotko Marta , Jastrzębiec-Witowska Anna , Gorlach Krzysztof , Nowak Piotr 
Published: April 2019

Abstract
For well over two decades the phrase “Think Global, Act Local” shaped the rhetoric used by social movements, environmental activists and intellectuals critical of the neoliberal narrative of globalisation. The intention was to obtains ideas and solutions elaborated in various parts of the world implemented in local communities and to give special meaning to progressive proposals of international social movement contesting globalisation. This approach could certainly be beneficial in terms of the diffusion of good environmental practices or spreading civil society ideas in developing countries.
However, when global ideas reach local ground, they remain global ideas, and sometimes very foreign ones, which may take over or eclipse local concepts in unintended or less-than-ideal ways. Occasionally, this approach could even lead to overpowering what is local instead of empowering it. Therefore, having the empowerment of local communities in mind, we propose that those who really contest globalisation of the neoliberal narrative should turn the tables and work to “Think Locally, Act Globally.”
Thinking locally and acting globally helps to ensure that adequate attention will be paid to local needs and local ideas. Presently, no local community exists outside of the global context and its influences, which affects the writings of contemporary sociologists who tend to emphasise the concept of “place” when analysing local communities. The nature of bonds on the local level changes in the globalised world, as local communities become more goal-oriented, utilising the functional proximity of people and other assets of the community. These new types of communities emerge even in places previously recognised as being shaped by local customs and traditions.
These changes can be seen in the rural, semi-rural and small-town communities of Zalipie and Dąbrowa Tarnowska in Małopolska, as well as Radzionków in Silesia and in the nationwide study of rural communities in Poland. Their potential as the communities of the new type can be recognised as matching with neo-endogenous and sustainable development concepts.
The Palace Architecture of the Roma Population in Romania
Authors: Preda Mihaela-Daniela , Vijulie Iuliana , Lequeux-Dincă Ana Irina 
Published: April 2019

Abstract
Contrasting the local specific architecture through an obvious opulent style, “palaces” of Roma population in Romania generate controversial debates. The present study analyses this phenomenon from a socio-geographic perspective in its attempt to draw attention to the new constructions appearing in the post-communist period after 1990. The Roma palaces are a choice of a showy non-constrained way to manifest an ethnic socio-economic status at the local level are perceived differently in Romanian society by the Roma community and by the Romanian population respectively. Our research methodology was correlated with the particularities of this topic and has been very infrequently approached until the present moment. It has hence used as its main tools direct observation, a social survey based on semi-structured interviews and media monitoring. The results of the study have mainly showed that the appearance of the new type of residences is a consequence of the change in the socio-economic statute of the Roma population, the size of the house being directly proportional to the status of the privileged within a community. Moreover, we have already witnessed architectural trends in the aesthetics of these constructions, which were mainly perceived in a negative way by the Romanian respondents and in a positive way by Roma respondents.
Leadership versus customer orientation in an innovative enterprise — a contribution to further exploration
Authors: Widelska Urszula , Jeseviciute-Ufartiene Laima , Tuncikiene Zivile 
Published: April 2019

Abstract
The consideration of the multidimensionality and multidirectionality of management science within the research process is currently a very important challenge. The search for dependencies and connections between leadership and customer orientation falls fully into the desired research trend. Both leadership and customer orientation are widely described within management science; however, the connections and dependencies which occur between them still require further, in-depth exploration and knowledge concerning leadership and customer orientation needs to be systematised. This article aims to identify further directions of study into leadership and customer orientation in an innovative company. Additional goals include the systematisation of knowledge regarding customer-oriented leadership and the formulation of research hypotheses which will become the starting point for future studies. The conclusions are supported by the results of a quantitative study which applied the CAWI method to a group of 204 business leaders from North-East Poland. The article presents the results of the preliminary research realized as part of a research grant from the National Science Centre entitled “Leadership and customer orientation in an innovative enterprise”. The results of the conducted research show that customer orientation among business leaders is not uniform and depends on the size of their company, the style of management and the type of innovation implemented by their enterprise.
Information-decision model for self-controlling enterprise processes
Authors: Zaborowski Mirosław 
Published: April 2019

Abstract
This study demonstrates that integrated management and direct control systems may be organised as integrated enterprise process control (EntPC) systems, which are composed of self-controlling enterprise business processes. A business process has been defined as a control system for business activities, which are considered to be business processes of the lower level, or as base processes that are control systems for control plants in the form of infrastructure operations. An enterprise process also influences its delivery. This definition has been generally compared with definitions used in approaches of BPMN, YAWL, ARIS, DEMO and MERODE. Each enterprise process has its own controlling unit that contains one information unit and one decision unit, as well as memory places of the information-decision state variables that are processed by the business transitions that belong to these units. The i-d state variables are attributes of business objects, i.e. business units, business roles, business activities, business accounts and business products. Their values are transferred between business transitions that belong to the same or different controlling units. Relationships between business objects, business transitions and i-d state variables, as well as the other most important concepts of the EntPC system framework (EntPCF), are presented in this paper as the class diagrams of the enterprise process control language (EntPCL).
Pilot Study on the Application of Employee Scheduling for the Problem of Safety Instrumented System Design and Maintenance Planning for Remotely Located Oil and Gas Facilities
Authors: Redutskiy Yury 
Published: April 2019

Abstract
The technology of production, transportation, and processing of oil and gas involves various hazardous processes. To mitigate the risk that these processes pose, the technological solutions work closely with the automated control and safety systems. The design and organisation of maintenance for the automated safety instrumented systems (SIS) have a significant bearing on the overall safety of operations in this industry. Over the past few decades, many hydrocarbon resources have been discovered in unconventional environments, such as remote, offshore, and arctic locations. Transportation of engineering personnel to these remote locations and back, and thereby, the organisation of the shift work poses additional challenges for the petroleum sector. Under such circumstances, the workforce-related costs play a considerable role in the overall cost of the technological solution and thereby the decisions regarding the workforce organisation should be addressed in the framework of evaluating and choosing the appropriate safety measures. That is why the research presented in this paper aims to address the lifecycle of the technological solution integrating the problems of SIS design, maintenance planning, and employee scheduling into a single decision-making framework to optimise the set of technical and organisational safety measures inherent in the SIS. The performance and maintenance of the SIS are described with a Markov model of device failures, repairs and technological incidents occurrence. The employee scheduling part of the mathematical model utilises the set-covering formulation of maintenance crews taking particular trips. A black-box optimisation algorithm is used to find reasonable solutions to the integrated problem of engineering design and workforce planning. The decisions include the choices of the components and structures for the safety system, the facility overhaul frequencies, the maintenance personnel size, as well as the schedules of trips and shifts for the crews.
Durability of airfield pavement cement concrete in the presence of de-icing agents
Authors: Kowalska Danuta , Rumak Aleksandra 
Published: April 2019

Abstract
In Poland the climatic conditions in the autumn and winter season are particularly severe for concrete infrastructure. Concrete’s resistance to frost and chemical deicing agents determine the durability of cement concrete pavement. An increase in the premature deterioration of airfield pavements exposed to new generation deicing chemicals may suggest that there is a relation between the damages and the application of the deicers. The paper presents selected results of microstructural analysis of the airfield pavements concrete exposed to the deicers based on acetates and formates. Microscopic evaluation was carried out with the scanning electron microscope (SEM). The local chemical compositions of the phases of interest were performed using the Energy Dispersive X-ray analysis (EDX).
Investigations of the susceptibility of unmanned aerial vehicles on intensive microwave radiation
Authors: Sulkowski Jarosław , Błaszczyk Janusz , Grzybowski Adam , Karcz Kacper , Kowaleczko Paweł 
Published: April 2019

Abstract
Commercially available drone type unmanned aerial vehicles (UAV), as well as parts and subsystems enabling the assemble of UAVs, are becoming more and more widely available, and their performance is constantly improving. The current possibilities of a drone assembled by a hobbyist predispose are not only to be used as a reconnaissance tool but also as a guided missile. The use of a camera with a video stream transmitter simultaneously with virtual reality goggles and video stream receiver gives the pilot an impression of being on the drone, which makes it possible to control it with extreme precision, even at high speeds. The article presents research aimed at determining the extent and type of damage made on exemplary racer drone caused by intense microwave field radiations.
Influence of source data on fatigue estimation of a fighter aircraft
Authors: Reymer Piotr , Zieliński Wojciech , Kurnyta Artur 
Published: April 2019

Abstract
Aircraft structures during operation are exposed to fluctuating loads caused both by aerodynamic and inertial loads. This fluctuation leads to the creation of fatigue cycles, which gradually diminish the residual durability of the structure. During the design process, the flight envelope is defined as well as the design load spectrum, which then defines the durability of the structure (often expressed in means of flight hours). However, during the operation of an individual aircraft the actual load cycles can be significantly lower or higher than the designed; therefore, load monitoring is essential for safe operation of aircraft structures.
The following article shows the results of fatigue analysis based on flight data from different flight data recorders for the Su-22 fighter aircraft.
An expert system aided method of the blade vibration sources identification with blade-tip timing (BTT) signal decomposition
Authors: Borowczyk Henryk , Rokicki Edward , Spychała Jarosław 
Published: April 2019

Abstract
An expert system aided method of the blade-tip signal decomposition to the turbine blade vibration sources identification is presented. The method utilises a multi-valued diagnostic model based on the discrete wavelet transform. Proposed algorithm consists of four stages: signal decomposition into low- and high-frequency components (approximations and details), approximations and details parameterization, multi-valued encoding of parameters obtained at the second stage, an expert system use of the turbine blade vibration sources identification.