bluuebunny/crossref_metadata_2025_split huggingface dataset:
Model for Determining the Consumption of Machinery, Tableware, Fuel, Oils and Lubricants with the Participation of Units from the Bulgarian Army in Humanitarian Operations
Authors: Nichev Nikolay 
Published: July 2017

Abstract
Regulating documents of the Bulgarian Army considered norms for support classic combat operations and in fact Bulgarian Army has no planning methods to be used for planning of humanitarian operations. Solving this problem can be achieved through the use of planning factors. Planning factors are generally based on experience or data on the use of resources from previous operations. The participation of units of the Bulgarian Army in humanitarian operations have failed to bring to the accumulation of data needed to create a suitable planning factors. The purpose of the study is to develop a model by which to bring out planning factors in determining the the consumption of machinery, tableware, fuel, oils and lubricants with the participation of units from the Bulgarian Army in humanitarian operations.
Extracurricular Sport Activities and their Importance in Children Socialization and Integration Process
Authors: Pomohaci Marcel , Sopa Ioan Sabin 
Published: July 2017

Abstract
The importance of sports activities nowadays is showing their effects on the future development of children, extracurricular activities come in the help of the physical education teacher with benefits on children's development. Our study focuses on revealing the importance of extracurricular sports activities in the process of children's socialization and integration. The research sample was formed from two different groups, the experimental group was formed by 25 students (age 10 ± 2.1 years, 13 boys, and 12 girls), that practiced 2 hours a week physical education and other 2 hours a week extracurricular activities like basketball and volleyball; and the sample group formed by 24 students (age 10 ± 1.8 years, 12 boys and 12 girls), that practiced 2 hours a week classic physical education. The results showed us that extracurricular activities have a good impact on children's socialization and integration, the experimental group improved their coefficient of group cohesion from 0.04 at the initial testing to 0.06 at the final test, and the index of cohesion from 0.02 at the initial test to 0.05 at the final testing. Significant differences were found within the experimental group both in the initial and in the final tests (p < 0.05), also significant differences were discovered between the experimental and the sample group in the final measurement (p < 0.05). Conclusions of this research presented that the experimental group had good improvements of cohesion and social integration of children, showing that extracurricular sport activities have a positive impact on improving socialization, developing cohesion and integrate the marginalized children in the social group.
Separation of Contaminants in The Freeze/Thaw Process
Authors: Szpaczyński Janusz A. , White Jeffrey A. , Côté Caroline L. 
Published: July 2017

AbstractThese studies examined the concept of concentration and purification of several types of wastewater by freezing and thawing. The experiments demonstrated that freezing of contaminated liquid contributed to concentration of contaminants in solution as well as significant concentration and agglomeration of solid particles. A high degree of purification was achieved for many parameters. The results of comparative laboratory tests for single and multiple freezing are presented. It was found that there was a higher degree of concentration of pollutants in wastewater frozen as man-made snow than in bulk ice. Furthermore, the hypothesis that long storage time of liquid as snow and sufficient temperature gradient metamorphism allows for high efficiency of the concentration process was confirmed. It was reported that the first 30% of the melted liquid volume contained over 90% of all impurities. It gives great opportunities to use this method to concentrate pollutants. The results revealed that the application of this process in full scale is possible. Significant agglomeration of solid particles was also noted. Tests with clay slurry showed that repeated freezing and thawing processes significantly improve the characteristics of slurry for sedimentation and filtration.
A New Method for Assessing Haemolysis in a Rotary Blood Pump Using Large Eddy Simulations (LES)
Authors: Szwast Maciej , Moskal Arkadiusz , Piątkiewicz Wojciech 
Published: July 2017

Abstract
The opportunity to assess haemolysis in a designed artificial heart seems to be one of the most important stages in construction. We propose a new method for assessing haemolysis level in a rotary blood pump. This method is based on CFD calculations using large eddy simulations (LES). This paper presents an approach to haemolysis estimation and shows examples of numerical simulation. Our method does not determine the value of haemolysis but allows for comparison of haemolysis levels between different artificial heart constructions.
Enhanced Chondrocyte Proliferation in a Prototyped Culture System with Wave-Induced Agitation
Authors: Pilarek Maciej , Godlewska Klaudia , Kuźmińska Aleksandra , Wojasiński Michał , Dąbkowska Katarzyna 
Published: July 2017

Abstract
One of the actual challenges in tissue engineering applications is to efficiently produce as high of number of cells as it is only possible, in the shortest time. In static cultures, the production of animal cell biomass in integrated forms (i.e. aggregates, inoculated scaffolds) is limited due to inefficient diffusion of culture medium components observed in such non-mixed culture systems, especially in the case of cell-inoculated fiber-based dense 3D scaffolds, inside which the intensification of mass transfer is particularly important. The applicability of a prototyped, small-scale, continuously wave-induced agitated system for intensification of anchorage-dependent CP5 chondrocytes proliferation outside and inside three-dimensional poly(lactic acid) (PLA) scaffolds has been discussed. Fibrous PLA-based constructs have been inoculated with CP5 cells and then maintained in two independent incubation systems: (i) non-agitated conditions and (ii) culture with wave-induced agitation. Significantly higher values of the volumetric glucose consumption rate have been noted for the system with the wave-induced agitation. The advantage of the presented wave-induced agitation culture system has been confirmed by lower activity of lactate dehydrogenase (LDH) released from the cells in the samples of culture medium harvested from the agitated cultures, in contrast to rather high values of LDH activity measured for static conditions. Results of the proceeded experiments and their analysis clearly exhibited the feasibility of the culture system supported with continuously wave-induced agitation for robust proliferation of the CP5 chondrocytes on PLA-based structures. Aside from the practicability of the prototyped system, we believe that it could also be applied as a standard method offering advantages for all types of the daily routine laboratory-scale animal cell cultures utilizing various fiber-based biomaterials, with the use of only regular laboratory devices.
The Effect of Wetting on The Course of The Drum Granulation
Authors: Błaszczyk Michał , Heim Andrzej , Olejnik Tomasz P. 
Published: July 2017

Abstract
This paper presents the results of experimental drum granulation of silica flour with the use of wetting liquids with different values of surface tension. Additionally, different liquid jet breakup and different residual moisture of the bed were applied in the tests. The process was conducted periodically in two stages: wetting and proper granulation, during which no liquid was supplied to the bed. The condition of the granulated material after the period of wetting (particle size distribution and moisture of separate fractions) and a change in the particle size distribution during the further conduct of the process (granulation kinetics) were determined.
Teaching as Creative Process: Perspectives From Personal Narratives
Authors: Doyle Charlotte L. 
Published: July 2017

AbstractThis paper explores the place of teaching in the landscape of creativity. It draws on analyses of interview narratives from dedicated teachers from various educational levels and teaching contexts; none had been singled out as creative by their institutions. Asked when teaching had been experienced as a creative process, rather than describing specific incidents, the teachers told of projects and goals that spanned a semester or year. Daily activities contributed to the projects, making creativity in teaching everyday creativity in both the technical and literal senses. Interview protocols were analyzed into meaning units and categorized into themes. Some themes were similar to those in studies of creative teachers and teaching, though no prior study explicitly put forward all of them. The interviewed teachers described practices previously suggested for nurturing student creativity. Most themes echoed features found in creativity studies of various other domains. Two unique features were the double nature of intrinsic motivation and the nature of the creative “product.”
Selected Concepts in The Development of Drawing Activity in Children Aged 3 to 12
Authors: Didkowska Bernadeta 
Published: July 2017

Abstract
More than a hundred years of research on the drawing activity of children and young people shows both a change in the way it is perceived and in its importance for healthy development. Numerous monographs, dissertations, research conducted by psychologists, pedagogues, aestheticians, art historians and visual artists has contributed to the popularity of terms such as “children’s art” or “children’s artistic work”. Children’s and young people’s drawings have not only been acknowledged for their artistic and aesthetic value, but also for their projective and psychometric qualities. Research on children’s drawing shows that the depiction is a result of knowledge and perception, which depends on personality and intelligence, as well as on emotions, persistent views and attitudes. Furthermore, the content, as well as the formal qualities of a drawing are subject to the constant influence of changing aesthetic conventions and cultural processes. This article deals with selected classic concepts of artistic development in children aged 3 to 12 defined by researchers such as Stefan Szuman, Georges Henri Luquet, Viktor Lowenfeld and Lambert Brittain, Rudolf Arnheim, Ernst H. Gombrich and Władysław Strzemiński. The crucial aspect of this disquisition was to emphasize the value of spontaneous children’s drawings and of the role of spontaneous drawing in their appropriate development. It was equally important to highlight the need for the students to do their own creative work with a teacher assisting them only as a guide, a discrete observer and potential advisor. This is why I pondered upon the following key notions in characterizing the drawing activity of children aged 3 to 12: the period of scheme in drawing development (ideoplastic art, S.Szuman), spontaneous drawing and drawing scheme.
From theory to practice of ecotourism: major obstacles that stand in the way and best practices that lead to success
Authors: Dimitriou Christina K. 
Published: July 2017

Abstract
Ecotourism has been described as the ideal kind of tourism, as it aims to conserve the natural, cultural and other tourist resources for continuous use for future generations whilst still bringing benefits to the present societies. Theoretically, it sounds so promising and attractive, but when it comes to its actual implementation, significant constraints bar the way to success. Various countries that attempted to foster sustainable development in their communities, either partially achieved their goals or their implementation totally lapsed. These fruitless efforts clearly reflect the huge gap that still exists between the theory and practice of ecotourism. The purpose of this paper is to fill this gap that seems to have been growing in recent years by explaining what has been done wrong and what specific policies and procedures could help bring a positive change. This paper aims to move from theory to practice and concentrate on how the implementation of ecotourism can be achieved properly and lead to success. The key factors responsible for failure are addressed, so they can be avoided and mistakes of the past will not be repeated. It also serves as a guide to more effective strategies of promoting ecotourism successfully around the world.
Evaluation of Damage Degree of Inconel 718 using Nondestructive Indicators of Damage
Authors: Krysztofik Józef 
Published: July 2017

AbstractThis paper presents the results of the quantitative evaluation of the degree of damage caused by plastic strain accumulated in static tensile tests and creep tests. To detect changes in the structure of the material and in order to determine the degradation of the materials, nondestructive methods were used, namely the ultrasonic and eddy current methods. In ultrasonic testing, attenuation and acoustic birefringence were used as damage indicators. In the case of the eddy current method, changes in the phase angle of impedance were observed in the material. The material tested was Inconel 718 alloy. Inconel alloys are often find application in extreme working conditions including in the power engineering industry, aviation and aerospace. A new type of specimen with the variable cross-sectional area of the measuring part was used in the tests. This allowed researchers to obtain a continuous distribution of plastic strain and enabled analysis of the material with respect to different damage degrees. The correlation between the degree of damage, expressed by the measure of deformation, and the value of nondestructive indicators was determined. On the basis of it, the dependence indicating the ability to nondestructive evaluation of the degradation degree of the material, subjected to loads exceeding the yield limit was obtained.
The Elaboration of the Method of Fatigue Testing of the Rotor of the Mosups Plane Propulsion System
Authors: Głowacki Dominik , Rodzewicz Mirosław 
Published: July 2017

Abstract
This paper concerns fatigue testing of the rotor of the propulsion system for the MOSUPS – an unmanned aircraft designed in a joint wing configuration, and equipped with a ducted propeller. The work presents the analysis of the stresses and deformations of the rotor structure as well as the form of the loading cycle. The aim of the paper is to introduce the concept of a simplified method of fatigue testing of multi-blade rotors. With the sophisticated geometry of the rotor in mind – the authors applied the FEM tools and implemented the ANSYS and nCode programs. The prototype of the fatigue stand built by the authors is also presented in the paper.
Fatigue Cracks Detection using PZT Transducers under the Influence of Uncertain Environmental Factors
Authors: Dziendzikowski Michal , Klimaszewski Slawomir , Dragan Krzysztof 
Published: July 2017

Abstract
This paper presents technique for qualitative assessment of fatigue crack growth monitoring, utilizing guided elastic waves generated by the sparse PZT piezoelectric transducers network in the pitch – catch configuration. Two Damage Indices (DIs) correlated with the total energy received by a given sensor are used to detect fatigue cracks and monitor their growth. The indices proposed carry marginal signal information content in order to decrease their sensitivity with respect to other undesired non-controllable factors which may distort the received signal. The reason for that is to limit the false calls ratio which besides the damage detection capability of a system, plays a crucial role in applications. However, even such simplified damage indices can alter over a long term, leading to the misclassification problem. Considering a single sensing path, it is very difficult to distinguish whether the resultant change of DIs is caused by a damage or due to decoherence of these DIs. Therefore, assessment approaches based on threshold levels fixed separately for DIs obtained on each of the sensing paths, would eventually lead to a false call. An alternative approach is to compare changes of DIs for all sensing paths. Developing damage distorts the signal only for the sensing paths in its proximity. In order to decrease the misclassification risk, a method of compensating such DIs drift is proposed. The main features and damage detection capabilities of this method will be demonstrated by conducting a laboratory fatigue test of an aircraft panel. The proposed approach has been verified on a real structure during fatigue test of a helicopter tail boom.
Sensitivity of vegetation indices in relation to parameters of Norway spruce stands
Authors: Modzelewska Aneta , Stereńczak Krzysztof , Mierczyk Monika , Maciuk Sylwia , Bałazy Radomir , Zawiła-Niedźwiecki Tomasz 
Published: July 2017

Abstract
The main goal of this research is to shed further light on the sensitivity of the vegetation indices to spatial changes of stand parameters. The analysis was done within mountain forests in the Sudetes and the Beskids in southern Poland. Some 1327 stands were analysed with more than 70 percent of spruce contribution in the species composition. The response of selected vegetation indices was verified in relation to the alterations of spruce participation, stand height, volume, stand density and diameter. The following indices were analysed: Normalized Difference Vegetation Index, Normalized Difference Red Edge Index, Green Normalized Difference Vegetation Index and Wide Dynamic Range Vegetation Index. Indices were calculated based on the Rapid Eye (Black Bridge) images. All the analysed stand characteristics influence the values of vegetation indices. In general: mean height, diameter at breast height, volume and spruce participation are the most negatively correlated with the indices. Density is a variable that, in general, cannot directly be used for indices correction, because it is hard to find any stable trend. NDRE is the most stable index for the analysis of stand characteristics.
Soil moisture variation on the outlet area of devices dewatering forest roads in Beskid Sądecki
Authors: Gołąb Janusz , Urban Krzysztof , Badach Elżbieta 
Published: July 2017

Abstract
Water run-off - a natural part of water circulation in the natural environment - is a harmful and undesired phenomenon for humans. The most spectacular and most serious one is its erosive activity. In adverse conditions, such a runoff has high energy, it causes serious reshaping of a terrain and it destroys the natural environment and infrastructure. In the forest environment, a run-off process occurs basically on roads, skidding trails and in log storage sites, which are areas with soil cover properties changed by humans. The devices used for dehydrating a transport system direct water collected in the form of concentrated streams to a slope, which frequently causes serious linear damage or landslides. The objective of the tests carried out was to determine the spatial distribution of soil moisture on the area behind the outlet of devices dehydrating forest roads within the context of changes in selected soil properties affecting a risk of landslide formation. The tests included four water drains dehydrating a forest slope road with a soil surface. In the area located behind the outlet, according to the model accepted, soil samples were collected for testing a current moisture value, determining grain composition and a hydraulic conductivity coefficient, calculated based on the simplified Hazen formula. There were significant differences in the soil moisture means in the three-measurement series conducted; nevertheless, the highest moisture means were obtained after the lowest precipitation, and the lowest moisture means were obtained after the highest precipitation. It applies to all water drains observed, separately and collectively. Average moisture measures in all dehydrating facilities differed among one another, although in different sessions, this dependence was observed in various facility pairs. The statistical analysis did not demonstrate any significant differences in moisture in terms of the distance of moisture testing location from the road edge, or in locations with different distances from the water run-off line behind the outlet of dehydrating devices. Significant differences could be observed in the analysis of average moisture values in the soil layers. Such an analysis result could be explained by a relatively low soil permeability and low slope gradient on the area examined. Usually, a few percent fluctuation in soil moisture, despite precipitation diversity, in combination with a high amount of granular soil structure, does not create conditions facilitating the formation of landslides.
Application of selected molecular markers in studies on forest trees
Authors: Tereba Anna , Konecka Agata , Nowakowska Justyna A. 
Published: July 2017

Abstract
The paper describes a number of molecular methods used in the past and now to analyze forest tree species. Taking into account the economic importance of forest trees and in view of the timber economy, wood properties and characteristics are essential factors subjected to control, observation and research. Molecular techniques that support traditional selection methods allow for genetic diversity analyses considering a range of research aspects. The development of these techniques at the turn of the last two decades has enabled wide-ranging use of molecular data in studies on forest tree populations. On the example of pine (Pinus L.), the paper presents data based on molecular studies as well as a variety of possibilities to apply the obtained results.
First confirmed record of Elodea canadensis Michx. (Hydrocharitaceae) in Greece
Authors: Poulis Georgios , Zervas Dimitrios 
Published: July 2017

Abstract
The paper confirms the presence of Elodea canadensis Michx. in Greece and outlines the history of contradictory relevant reports. This is also the first report of the species′ presence in the transboundary lake Great Prespa.
Endophytic fungi residing in medicinal plants have the ability to produce the same or similar pharmacologically active secondary metabolites as their hosts
Authors: Venieraki A. , Dimou M. , Katinakis P. 
Published: July 2017

Summary
Medicinal plants have been used for thousands of years in folk medicines and still are used for their health benefits. In our days medicinal plants are exploited for the isolation of plant-derived drugs as they are very effective and have relatively less or no side effects. However, the natural resources of medicinal plants are gradually exhausted and access to plant bioactive compounds is challenged by the low levels at which these products accumulate in native medicinal plants. For instance, to meet the market demands of 3 Kg per year of vinca alkaloids, powerful plant-derived anticancer drugs, 1.5×106 Kg dry leaves are required. In this regard, this review aims to highlight the fact that endophytic fungi residing in medicinal plants are capable to biosynthesize pharmacologically active secondary metabolites similar or identical to those produced by their host medicinal plant. Furthermore, the evolutionary origin of the genes involved in these metabolic pathways as well as the approaches designed to enhance the production of these metabolites by the isolated endophytic fungi are also discussed.