bluuebunny/crossref_metadata_2025_split huggingface dataset:
On Co-Creativity in Playful Classroom Activities
Authors: Schmoelz Alexander 
Published: July 2017

Abstract
Recent research points to the essential role of creativity in coping with and acting in a changing world. It has been shown that individual, collaborative and communal efforts are a core capacity for acting in and coping with ever changing circumstances, such that a novel emphasis on cocreativity has arisen. Yet there is very little research on how to provide occasions for co-creativity in classrooms and so the research problem focuses on enabling co-creativity. Therefore, a playful pedagogical design was created and facilitated in classroom. The qualitative data collection methods involved narrative-Socratic dialogues with teachers and students, field notes, and gameplay videography. The Narrative-Structural Method was used to analyze the research material. The main results show that playful classroom activities provide an occasion for co-creative reframing's, engaging in dialogue, expressing emotions, and co-creating a shared story that is rich in co-determined actions. In conclusion, the pedagogical implications of the results are that classroom activities for co-creativity may facilitate mixed playful pedagogies and empty content spaces, so that children and young people can playfully identify, explore and negotiate shared topics that are novel and meaningful to themselves and others.
Key Policy Rate as the Main or Additional Instrument of Inflation Targeting Strategy in Serbia
Authors: Furtula Srđan , Kostić Milan 
Published: July 2017

Abstract
In achieving price stability as the primary objective of monetary policy, the National Bank of Serbia uses the key policy rate as the main instrument of monetary policy, while other instruments have a supporting role - contribute to a smooth transmission of the key policy rate on the market, as well as the development of financial markets. However, because the conditions in which economic and financial system of the Republic of Serbia works, transmission mechanism of monetary policy is conducted mainly through the exchange rate channel, while the channel of interest rates almost did not work. The great impact the exchange rate channel is determined by the great influence of the single currency euro and the ECB on our country. Therefore, the aim of this paper is to analyse the efficiency of the key policy rate as a monetary policy instrument, because in recent years the primary instrument receives a secondary character in the monetary regulation.
Applying the Moodle Platform in Online Student Self-Assessment
Authors: Stanković Jovica , Milovanović Slavoljub , Radović Ognjen 
Published: July 2017

Abstract
Taking into consideration the importance of information and communications technology in higher education both as part of the teaching and grading process, but also the limitations in its application in higher education in the Republic of Serbia, this paper outlines the possibilities which the Moodle platform offers for the definition and use of online self-assessment tests and quizzes in the preparation and simulation of the entrance exam for the Faculty of Economics of the University of Niš. To indicate the importance of egrading for the increase in the effectiveness of learning, the paper analyses the number of created accounts and the number of visits, while a statistical analysis of the candidates′ results on the simulated entrance exam, from 2014 to 2016, was used to test the hypothesis on the significance of formative assessment for effective learning. The obtained t-test results indicate that formative assessment in this specific instance contributes to the improvement of the candidates’ learning process and that the application of such a means of student self-assessment in other areas of study would significantly contribute to the increase in the effectiveness of learning. On the other hand, statistical analyses of individual responses to questions represent a significant source of feedback for teachers, which can be used for the purpose of redefining tests.
Review of Aeronautical Fatigue Investigations in Poland (2013-2014)
Authors: Niepokólczycki Antoni , Leski Andrzej , Dragan Krzysztof 
Published: July 2017

Abstract
This review was presented on the 34 Conference of the International Committee on Aeronautical Fatigue and Structural Integrity, Helsinki, Finland, June 1-2, 2015. It contains description of main works and investigations in fatigue of aircraft structures performed in Poland during the years 2013 and 2014.
Lightning Strike Protection of Aircraft Composite Structures: Analysis and Comparative Study
Authors: Katunin Andrzej 
Published: July 2017

Abstract
Lightning strikes are a serious problem during operation of aircraft due to the increasing applicability of polymeric composites in aircraft structures and the weak electrical conducting properties of such structures. In composite structures, lightning strikes may cause extended damage sites which require to be appropriately maintained and repaired leading to increased operational costs. In order to overcome this problem various lightning strike protection solutions have been developed. Some of them are based on the immersion of metallic elements and particles while others use novel solutions such as intrinsically conductive polymers or other types of highly conductive particles including carbon nanotubes and graphene. The concept of fully organic electrically conductive composites based on intrinsically conductive polymers is currently being developed at the Silesian University of Technology. The results obtained in numerous tests, including concerning electrical conductivity and the capability to carry on high-magnitude electrical charges as well as certain operating properties need to be compared with existing solutions in lightning strike protection of aircraft. The following study presents the properties of the material developed for lightning strike protection and a comparative study with other solutions.
Electropolishing Procedure Dedicated to In-Depth Stress Measurements with X-Ray Diffractometry
Authors: Gadalińska Elżbieta , Wronicz Wojciech 
Published: July 2017

Abstract
Electropolishing is the sole reliable method of removing the outer layer of the specimen without changing its stress state. This feature of the electropolishing procedure allows researchers to investigate the in-depth stress distribution. Developing of the method in a diffraction laboratory is crucial because there is no universal theory for the electropolishing procedure allowing the removal of the layers of different thickness. This is due to the multiplicity of different factors affecting the electropolishing results. A factor of vital importance from the point of view of indepth stress measurements is the thickness of the electropolishing layer. Hence the importance of the procedures for the electropolishing of a layer of a precisely defined thickness.
This work deals with the problem of the selection of the parameters in the electropolishing process for two types of materials: stainless steel and aluminium alloy. The tests of mutual correlation of current intensity, voltage applied and time of the procedure and its results are presented in the paper.
The In-Depth Stress Distribution for 1H13 Specimen after Cutting
Authors: Gadalińska Elżbieta , Wronicz Wojciech , Malicki Maciej 
Published: July 2017

Abstract
Measuring the in-depth stress state is of vital importance for materials scientists. Strain gauges methods are capable of yielding information only about the surface stress state. Diffraction methods using synchrotron or neutron radiation, which allow totally non-destructive stress measurements inside the material, are not widely available. In this context, the best widely available method combines the X-ray diffraction stress measurements and gradual removal of the outer layer by means of electropolishing. Here, this method was applied to the specimen made of 1H13 stainless steel cut with under water on a corundum cut-off wheel. The idea was to investigate how deeply an additional stress state resulting from cutting was introduced and whether the technique of combining of X-ray diffractometry and electropolishing can be used widely for determining the stress state inside the specimen.
Approach to Critical Crack Opening Displacement Modeling of Damage in Metal Sheets after Composite Patch Bonded Repair
Authors: Sałacinski Michał , Leski Andrzej , Stefaniuk Michał 
Published: July 2017

Abstract
The paper proposes a method of calculating the maximum displacement in the aircraft metal structure repaired by CPBR (bonded composite patch repair).
The calculations were made based on specimens. The specimens were prepared according to the current requirements used in aviation. The 2024-T3 alloy metal sheet was a structure. To repair the structure used the boron-epoxy composite patch in prepreg technology was used.
The metal structure was modeled as an isotropic elastic body. The metal structure coated with the composite patch was modeled as an orthotropic structure. Based on this, the stress was determined in the metal structure.
The size opening displacement in the metal structure was determined based on the model of linear elastic fracture mechanics for the plane stress state.
The calculation results were verified by measuring the displacement in laboratory conditions.
The laboratory tests made it possible to demonstrate the accuracy of the proposed approach.
Effect of seed collection and site altitude on the growth and genetic variability of early and late flushing provenances of Norway spruce tested in the IPTNS-IUFRO 1964/68 site in Poland
Authors: Masternak Katarzyna 
Published: July 2017

AbstractThe growth characteristics and the genetic variability of 23 population of Norway spruce tested in the largest international comparative experiments IPTNS-IUFRO 1964/68 in Krynica were analysed. The studied populations belong to early and late flushing provenances from Alpine, Carpathian and north-eastern range of occurrence of species. The height, diameter at breast height (DBH) and genetic diversity of 79 trees were examined using random amplified polymorphism DNA (RAPD) technique. The mean spruce height at the age of 45 years was 17.5 m and the DBH 20.4 cm. The average and the effective number of alleles per locus calculated for all studied populations was 0.90 and 1.20, respectively. The expected heterozygosity was 0.10. The obtained results show statistically significant relationship of the parameters of genetic variability of Norway spruces and the type of seed collection from which the IUFRO experience was established. It was found that the genetic variability of the studied population depends on the longitude and height above sea level of mother stands. No significant correlation was found between the type of seed collection and location of mother stands and height and DBH of Norway spruce. Also the growth characteristics (height and the DBH) of trees do not depend on their genetic variability.
Variability of morphological needle traits of Scots pine (Pinus sylvestris L.) among populations from mountain and lowland regions of Poland
Authors: Łabiszak Bartosz , Lewandowska-Wosik Anetta , Pawlaczyk Ewa Maria , Urbaniak Lech 
Published: July 2017

Abstract
The main goal of this work was to examine interpopulational needle traits variability of Scots pine (Pinus sylvestris L.) from four mountain, one foothill and three lowland, natural populations located in Poland. This choice of locations was motivated by the presumed different origins of mountainous populations and the necessity to demonstrate how closely they are related to lowland populations. Variation in the studied populations was determined using seven morphological traits of needles: 1 - needle length, 2 - number of stomatal rows on the flat side of a needle, 3 - number of stomata per 2 mm of needle length on the flat side, 4 - number of stomatal rows on the convex side of a needle, 5 - number of stomata per 2 mm of needle length on the convex side, 6 - number of serrations per 2 mm of the needle length on the left side and 7 - number of serrations per 2 mm of the needle length on the right side. Biometric data were analysed statistically, and it was found that (i) needle traits differentiate studied populations; (ii) the postulated division of the population into two groups is reflected in the obtained results; and (iii) a particularly strong relationship was found between two relict pine populations from the Pieniny (Sokolica, Kazalnica, Czertezik) and Tatra Mts. (Wielke Koryciska), which may be the result of the common origins and history of these two populations
Synecology of Cutandia maritima (L.) Barbey, a rare psammophytic species along the Montenegrin Coast (East Adriatic Coast)
Authors: Stešević Danijela , Bubanja Nada , Caković Danka , Jogan Nejc , Luković Milica , Šilc Urban 
Published: July 2017

Abstract
Cutandia maritima is a circum-Mediterranean species that inhabits sandy dunes along the coast line. It is fairly frequent on the western Adriatic coast but fairly rare and possibly even non-native in the east. In Croatia, it was discovered in 1990 in Crnika Bay on the island of Rab, which was considered until 2005 to be the only site on the eastern Adriatic coast from the Gulf of Trieste in the north to Corfu in the south. In 2009, the species was briefly reported for Velika plaža (Long Beach) in Ulcinj (Montenegro) but without details about the habitat type and synecology. The aim of this paper is thus to provide a deeper insight into the ecology and synecology of C. maritima in the eastern Adriatic part of the distribution area. On Velika plaža in Ulcinj, the species was found along the whole sea-inland gradient of sand dunes, in various types of vegetation: [1210] - annual vegetation of drift lines, [2110] - embryonic shifting dunes, [2120] - shifting dunes with Ammophila arenaria (white dunes), [2220] - dunes with Euphorbia terracina, [2130*] - fixed coastal dunes with herbaceous vegetation (grey dunes), and also [2190] - humid dune slacks.
Grassland vegetation of Hodrušská hornatina highland in Central Slovakia
Authors: Klimantová Alexandra 
Published: July 2017

AbstractThis paper is focused on the grassland communities in Hodrušská hornatina highland, Central Slovakia. We studied grasslands at 153 sites during the vegetation periods of 2013-2015 and recorded 303 species of vascular plants in the studied localities. The species richness ranged from 16 to 66 taxa per relevé. Data analysis (TWINSPAN, DCA) grouped the relevés into eight clusters. These clusters include five associations from three alliances: Holcetum lanati (Deschampsion cespitosae), Pastinaco sativae-Arrhenatherum elatioris, Alchemillo- Arrhenatheretum elatioris, Anthoxantho odorati-Agrostietum tenuis (all from Arrhenatherion elatioris) and Onobrychido viciifoliae-Brometum erecti (Bromion erecti). The other three clusters represent the transitional and successional stages of the communities listed above. A brief description of syntaxa is given. At some sites, the threatened, rare or protected taxa of Slovakia occurred as well, one from each of the categories of Critically Endangered and Vulnerable, nine species of the Nearly Threatened and six species from the category of Least Concerned.
Phytosociological analysis of montanesubalpine dwarf willow shrub communities in the Julian Alps and on the Trnovski gozd plateau (NW and W Slovenia)
Authors: Dakskobler Igor , Surina Boštjan 
Published: July 2017

Abstract
By means of a phytosociological analysis of 72 relevés of montane-subalpine shrub communities with dominating Rhododendron hirsutum, Salix waldsteiniana, S. glabra and S. appendiculata from the Julian Alps and the the Trnovski Gozd Plateau and by comparing them with similar communities elsewhere in the Alps and the Dinaric Alps we described a new association Laserpitio peucedanoidis-Salicetum waldsteinianae, a new subassociation Rhododendretum hirsuti vaccinietosum myrtilli, two new subassociations of the association Dryado-Rhodothamnetum chamaecisti that had recently been described in the Dolomites (-caricetosum firmae, -salicetosum waldsteinianae), as well as a new association Heliospermo pusillae-Rhododendretum hirsuti. We classified the glabrous willow community in the study area into a new association Homogyno sylvestris- Salicetum glabrae and proposed a new name - Rhododendro hirsuti-Salicetum appendiculatae for the large-leaved willow community, which we subdivided into two geographical variants: var. geogr. Paederota lutea (Julian Alps, Trnovski Gozd Plateau) and var. geogr. Hypericum grisebachii (Liburnian Karst).
Nomenclatural remarks to the classification of plant communities along post-fire succession
Authors: Kavgacı Ali , Šilc Urban , Bașaran Saime , Marinšek Aleksander , Bașaran Mehmet Ali , Košir Petra , Balpinar Neslihan , Arslan Münevver , Denli Özge , Čarni Andraž 
Published: July 2017

Abstract
This paper contains the original diagnoses of new syntaxa and typifications of existing names of syntaxa from paper “Classification of plant communities along post-fire succession in Pinus brutia stands in southern Antalya (Turkey)” that was published in Turkish Journal of Botany. As journal has only on-line version according to ICPN descriptions are not valid. We described syntaxa: Eryngio falcati-Securigerion securidacae all. nova, Ajugo chiae-Lactucetum serriolae ass. nova, Phlomido grandiflorae-Cistetum salvifolii ass. nova, and Arbuto andrachnes- Quercetum cocciferae ass. nova and selected nomenclatural type for Querco- Phillyreetum mediae Barbero & Quézel 1976.
First record of Aphis craccivora Koch (Hemiptera: Aphididae) on aronia crop in Montenegro
Authors: Latinović N. , Karamaouna F. , Kavallieratos N.G. 
Published: July 2017

Summary
The aphid Aphis craccivora was recorded on the crop of aronia, Aronia melanocarpa, in Montenegro, in June 2015 and 2016. This is the first record of A. craccivora in Montenegro on aronia.
Reaction of the native Greek tomato varieties ‘Chondrokatsari Messinias’ and ‘Katsari Santorinis’ to Fusarium oxysporum f. sp. lycopersici and Rhizoctonia solani infection
Authors: Darras A.I. , Kotsiras A. , Delis C. , Nifakos K. , Pavlakos E. , Demopoulos V. 
Published: July 2017

Summary
Plants have to cope with a number of biotic stresses among which, infectious diseases. The present study was conducted to investigate the reaction of two native Greek tomato vars, ‘Chondrokatsari Messinias’ and ‘Katsari Santorinis’, to infection by Fusarium oxysporum f. sp. lycopersici and Rhizoctonia solani. Disease symptoms, disease incidence and severity were recorded and the effects of infection on the number of flowers, the biomass production (fresh and dry weight), CO2 assimilation, stomatal conductance and transpiration were also evaluated. Both tomato varieties were susceptible to F. oxysporum f. sp. lycopersici and R. solani infection. However, ‘Chondrokatsari Messinias’ was found to be less susceptible to F. oxysporum f. sp. lycopersici compared to ‘Katsari Santorinis’. Both pathogens negatively affected biomass production of var. ‘Chondrokatsari Messinias’ but not that of ‘Katsari Santorinis’. The number of fl owers produced by ‘Chondrokatsari Messinias’ was negatively affected by R. solani but not by F. oxysporum f. sp. lycopersici. Infection of both varieties by R. solani also caused reduction in the CO2 assimilation, stomatal conductance and transpiration.
Issues in Using Self-Organizing Maps in Human Movement and Sport Science
Authors: Serrien B. , Goossens M. , Baeyens J-P. 
Published: July 2017

Abstract
Self-Organizing Maps (SOMs) are steadily more integrated as data-analysis tools in human movement and sport science. One of the issues limiting researchers’ confidence in their applications and conclusions concerns the (arbitrary) selection of training parameters, their effect on the quality of the SOM and the sensitivity of any subsequent analyses. In this paper, we demonstrate how quality and sensitivity may be examined to increase the validity of SOM-based data-analysis. For this purpose, we use two related data sets where the research question concerns coordination variability in a volleyball spike. SOMs are an attractive tool for analysing this problem because of their ability to reduce the highdimensional time series to a two-dimensional problem while preserving the topological, non-linear relations in the original data. In a first step, we systematically search the SOM parameter space for a set of options that produces significantly lower continuity, accuracy and combined map errors and we discuss the sensitivity of SOM-based analyses of coordination variability to changes in training parameters. In a second step, we further investigate the effect of using different numbers of trials and variables on the SOM quality and sensitivity. These sensitivity analyses are able to validate the conclusions from statistical tests. Using this type of analysis can guide researchers to select SOM parameters that optimally represent their data and to examine how they affect the subsequent analyses. This may also enforce confidence in any conclusions that are drawn from studies using SOMs and enhance their integration in human movement and sport science.
Dependence of spectral characteristics on parameters describing CO2 exchange between crop species and the atmosphere
Authors: Uździcka Bogna , Stróżecki Marcin , Urbaniak Marek , Juszczak Radosław 
Published: July 2017

AbstractThe aim of this paper is to demonstrate that spectral vegetation indices are good indicators of parameters describing the intensity of CO2exchange between crops and the atmosphere. Measurements were conducted over 2011-2013 on plots of an experimental arable station on winter wheat, winter rye, spring barley, and potatoes. CO2fluxes were measured using the dynamic closed chamber system, while spectral vegetation indices were determined using SKYE multispectral sensors. Based on spectral data collected in 2011 and 2013, various models to estimate net ecosystem productivity and gross ecosystem productivity were developed. These models were then verified based on data collected in 2012. The R2for the best model based on spectral data ranged from 0.71 to 0.83 and from 0.78 to 0.92, for net ecosystem productivity and gross ecosystem productivity, respectively. Such high R2values indicate the utility of spectral vegetation indices in estimating CO2fluxes of crops. The effects of the soil background turned out to be an important factor decreasing the accuracy of the tested models.
Physical and antioxidant properties of gluten-free bread enriched with carob fibre
Authors: Różyło Renata , Dziki Dariusz , Gawlik-Dziki Urszula , Biernacka Beata , Wójcik Monika , Ziemichód Alicja 
Published: July 2017

AbstractThere are no reports of addition of carob fibre to gluten-free bread, as only carob germ flour was used. The research task was to determine what level of carob fibre can be used and how it influences the physical and sensorial properties of gluten-free bread. Especially, the knowledge of the antioxidant properties of such bread is very valuable. The gluten-free bread from rice, corn, and buckwheat flour (35:35:30%) was prepared after mixing (5 min), proofing (40 min, 30°C), and baking (45-50 min, 230°C) of dough. Carob fibre was added in the amounts of 1, 2, 3, 4, and 5% of the total flour content. The results showed that increased content of carob fibre induced significant and favourable changes in the volume, colour, and texture (hardness and springiness) of the bread crumb. Carob fibre enriched the breads with lipophilic compounds able to chelate metal ions. The activity of hydrophilic compounds was significantly higher in the case of control bread and bread with the lowest percentage of the additive. In conclusion, the highest increase in antioxidant activity was found for breads with 1 and 2% of carob fibre. The most acceptable gluten-free bread can be obtained by adding up to 2% of carob.