bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Impact of Rule Modifications on Elite Basketball Teams’ Performance
Authors: Ibañez Sergio J. , Garcia-Rubio Javier , Gómez Miguel-Ángel , Gonzalez-Espinosa Sergio 
Published: October 2018

Abstract
Rule modifications in basketball are used to develop the sport, and FIBA changes the basketball regulations periodically and constantly in search of a more attractive game. The objectives of this study were as follows: i) to characterise and identify the technical-tactical performance indicators which discriminated the game style according to the effect of rule modifications; and ii) to analyse the persistence of these indicators according to rule modifications over time. Analyses were made of all the editions of the current competition system of the Copa Del Rey in Spanish basketball. One hundred and forty matches were analysed, starting from the 1995-96 to the 2014-15 season. Data were gathered from the official competition web page (www.acb.com) The variables analysed included rule modifications, the number of ball possessions, points scored, one, two and 3-point field goals made and attempted, total rebounds, defensive and offensive rebounds, assists, steals, turnovers, blocked shots, dunks and committed and received personal fouls, score differences, as well as one, two and 3-point field-goal percentages. Several analyses were carried out: descriptive analysis to characterise the sample; ANOVA to identify differences between periods; discriminant analysis to determine technical-tactical performance indicators which best discriminated between each competition term and rule change period; and finally autocorrelation function and cross-correlation were used to estimate the persistency of performance indicators over time. Results show that rule changes affect the way basketball is played. Nevertheless, players and coaches are the ones who determine functional behavior in basketball.
Performance Indicators of Winning and Defeated Female Handball Teams in Matches of the 2012 Olympic Games Tournament
Authors: Milanović Dragan , Vuleta Dinko , Ohnjec Katarina 
Published: October 2018

AbstractThe aim of the study was to determine performance indicators of winning and defeated women teams of the 2012 Olympic Games handball tournament. The sample of entities consisted of 27 games played during the preliminary round of the competition. The sample of variables consisted of the completed and unsuccessfully executed technical and tactical handball elements in attacking and defensive actions during handball matches (14 variables describing performance in attack and three variables related to defensive play). The differences between the winning and defeated teams in performance variables were determined using the Mann-Whitney U-test. The results showed statistically significant differences between the winning and defeated teams in the following variables: successful fast-break shots (5.11 ± 2.79 vs. 3.00 ± 1.88), unsuccessful wing shots (2.33 ± 1.24 vs. 3.67 ± 1.98), unsuccessful long-range shots (10.70 ± 3.98 vs. 13.37 ± 4.33), steals (5.48 ± 2.28 vs. 4.04 ± 2.07), and assists (13.81 ± 4.04 vs. 11.37 ± 3.59). The winning teams were better in the variables defining offensive performance effectiveness, especially with regard to successful performance of counter attacks; they also had higher efficiency of attacking actions with a strict selection of distance shots and wing shots, as well as a higher number of assists and steals.
The Relative Age Effect in Poland's Elite Youth Soccer Players
Authors: Rubajczyk Krystian , Rokita Andrzej 
Published: October 2018

Abstract
The relative age effect (RAE) is related to discrimination against youth athletes born in the last quarter of the calendar year. The current study presents research on the RAE in elite youth soccer players in Poland. Players in the Central Junior League (CLJ) finals represent 0.59% of the 25,756 players under 20 years old (U20). This study analyzed the post-game protocols of the CLJ knockout stage from the 2013/2014 and 2014/2015 seasons as well as the U17-U21 teams during 2015, including only players who played on the field for at least one minute (n = 395). The results revealed the existence of RAE in the examined groups ( CLJ 2013/2014, χ23 = 15.441, p < 0.01, CLJ 2014/2015, χ23 = 20.891, p < 0.001 U17-U21, χ23 = 25.110, p < 0.001). In addition, the results differed by monthly birth distribution in the Polish population (PP) between 1995 and 1999. This study is the first to examine the RAE in youth soccer in Poland. The occurrence of the RAE with regard to the most promising youth and national team players suggests that a similar effect exists among younger age categories. To reduce the RAE related to identifying soccer talent, tools should be implemented to optimize the player-selection process, such as those that consider the biological development of a player.
Effects of Probiotic Supplementation on Selected Parameters of Blood Prooxidant‐Antioxidant Balance in Elite Athletes: A Double‐Blind Randomized Placebo‐Controlled Study
Authors: Michalickova Danica , Kotur-Stevuljevic Jelena , Miljkovic Milica , Dikic Nenad , Kostic-Vucicevic Marija , Andjelkovic Marija , Koricanac Vladimir , Djordjevic Brizita 
Published: October 2018

AbstractA randomized, double-blind, placebo-controlled study was conducted, in order to evaluate if Lactobacillus helveticus Lafti® L10 (Lallemand Health Solutions, Montreal, Canada) supplementation during three months could influence oxidative markers in the population of elite athletes: triathletes, cyclists and endurance athletes. Twenty-two elite athletes were randomized to either placebo (n = 12) or probiotic (n = 10) groups. The probiotic group received 2x1010 colony forming units of Lafti® L10. Before and after the supplementation serum samples were collected. Markers of oxidative stress and anti-oxidative defense: superoxide dismutase (SOD), paraoxonase (PON), advanced oxidation protein products (AOPP), malondialdehyde (MDA), total antioxidant status, total oxidant status, pro-oxidant-antioxidant balance, oxidative stress index, bilirubin, uric acid and albumin were determined in serum. Parameters of lipid status, as well as susceptibility to copper-induced oxidation of LDL particles in vitro were also determined. There was a significant interaction effect for MDA (p = 0.039), with a decrease in MDA in the probiotic group only (p = 0.049). There was a significant interaction effect for AOPP (p = 0.037), with a significant decrease in the probiotic group (p = 0.045). Interaction effect for SOD was approaching to formal significance (p = 0.108) and the post-hoc test showed a significant decrease in the probiotic group (p = 0.041) only. A significant correlation between AOPP and SOD (p = 0.012, r = -0.40) was found in the probiotic group at the end of the study. PON1 activity was decreased in both the probiotic (p = 0.032) and placebo group (p = 0.035). No significant changes in the remainder of the evaluated parameters were noted. In conclusion, probiotic strain Lafti® L10 exerts certain antioxidant potential, but further research is needed.
Error Rate Analysis of Phase Sampled RZ-GMSK over Turbulent FSO Channel
Authors: Sahoo Pritam Keshari 
Published: October 2018

Abstract
In this paper authors have studied the error performance of an ISI compensating modulation technique called phase sampled RZ-GMSK. The numerical results are derived suitably for optical wireless back-haul networks under log-normal turbulence fading. It is seen that the proposed modulation technique outperforms other techniques at higher turbulence and for high speed data transmission.
Theorising Practice and Developing Practically Relevant Insights in Organisational Research
Authors: Liubertė Irina 
Published: October 2018

Abstract
In management research, theoretical abstractions, which are traditionally derived based on economic and individualist ontological assumptions, are limited in the ability to produce practically relevant insights and increase the divide between organisational practitioners and scientists. This paper argues that contemporary theory of practice, which jointly considers agency, structure and materiality, overcomes the confrontation and integrates scientific rigour with the richness of organisational practice. The author thereby introduces the origins of practice theory, analyses the definition of practice and explores the areas of management research where practice theory is currently adopted.
Specifics of Management of Enterprise Innovation Activities in the Czech Republic – The Decision-Making Mechanism
Authors: Peterková Jindra , Franek Jiří 
Published: October 2018

Abstract
The majority of Czech managers are aware that the long-term competitiveness of the company depends primarily on the use of innovative technical solutions and investments in new technologies. Despite awareness of the importance of innovation, many companies do not know how to manage, implement, and evaluate them. Empirical research showed that most innovation firms implement, but do not systematically manage the implementation of innovative projects and the allocation of funds. There is a contradiction between companies’ ability to orientate themselves in the approaches available in the area of innovation management and the existence of a large number of approaches that can be used to address a particular type of innovation problem. A set of innovation concepts has been created to solve those challenges. Practical steps of the decision-making mechanism for selecting innovation concepts have been proposed. The decision-making mechanism is based on the analytic hierarchy process (AHP) and serves primarily for managers of medium and large enterprises.
Mobile Test Stand Validation for Measuring Friction Coefficient of Carrying Rope with Friction Lining
Authors: Stawowiak Michał , Żołnierz Marcel 
Published: October 2018

Abstract
The article presents the problem of friction between the rope and the friction liner of a mining hoist very important for the safety of human transport. The friction linings approved for use in the Polish mining industry and their basic mechanical properties are presented. Laboratory and operational methods of friction feedback are described. This article presents an innovative mobile research stand developed at the Department of Mining Mechanization and Robotisation. The mobile test stand validation was presented.
Cost of Mining Coal as an Element of Multi-Criteria Assessment Using the Development Measure – A Case Study
Authors: Sulik-Górecka Aleksandra , Korban Zygmunt 
Published: October 2018

Abstract
The paper presents the possibilities of applying one of the multi-criteria assessment methods (the development measure method) in the processes of multi-variant design of technical and organizational solutions on the example of selecting equipment for a newly designed mine working in a hard coal mine. Using the case study, the authors proposed an alternative solution for decision-making problems in mining companies in relation to solutions based solely on unit costs of coal mining. The case study is preceded by the presentation of general principles regarding cost accounting in mining companies as well as the use of multi-criteria assessments.
The Influence of Chemical Composition of Tough-to-Machine Steels on Grinding Technologies
Authors: Ivanova Tanyana N. , Korshunov Aleksandr I. , Božek Pavol 
Published: October 2018

Abstract
The main purpose of processing of tough-to-machine materials is improving of cutting process of steels with different physicochemical properties and alloying by means of various chemical elements in combination with heat treatment. Producing of high quality surface layers depends on properties of material used to make details, that is why reasons of tough machining were identified: influence of chemical composition and resulting structure. The studies of grinding of tough-to-machine materials were undertaken by means of grinding wheels made from synthetic diamonds as they are most resistant and highly-productive. Based on the studies recommendations for using of characteristics of grinding wheels and tough-to machine steel grades are given.
Research on heat processes during grinding allows us to determine patterns showing how cutting speed, detail motion speed, area and action period of contact influence temperature and speed of heat processes in surface layers as well as depth of heating. These patterns also give the chance to show interrelation between temperature and rate of heating and cooling. This gives an opportunity to predict state of structure of surface layer of details made of tough-to-machine steels under different machining conditions reasonably.
Social Perception of Hard Coal Mining in Perspective of Region’s Sustainable Development
Authors: Bijańska Jolanta , Kuzior Aleksandra , Wodarski Krzysztof 
Published: October 2018

Abstract
This article presents a pilot study on the local community’s social perception regarding coal mines in Upper Silesia. The research was performed in connection with the smog, which was persistent and harmful to residents during the winter months of 2016. The researchers put forward to the local community the following two survey questions: 1. Is the image of coal mines in the eyes of the local community positive or negative? 2. Are coal mines socially responsible and is coal a good energy source? The aim of this article is to indicate the relationship of the local community to the presence of hard coal mines in the neighbourhood and their social role. Also, this work looks to identify the nuisances perceived by the inhabitants of the examined region about mining enterprises and whether these burdens should result in abandonment of hard coal mining. Pilot studies were conducted with the use of a diagnostic survey. The study was carried out in January 2017 on a sample of 267 people, comprising Silesian University of Technology students residing in Upper Silesia. An environmental survey technique was used. The researchers hypothesise that the image of mining and coal as a fuel for the local community is negative and the mines are not socially responsible enterprises. This research shows that the operation of mines is essential for society and its stability as it affects economic, social and energy safety. A large proportion of the respondents defined the image of mining as positive (108 people), but 76 people indicated that the image was rather negative. Most respondents pointed to the benefits of the mine’s operation. Opinions on social responsibility were divided, and most respondents failed to provide concrete examples of social engagement, so the first hypothesis was partly confirmed. Although the respondents pointed to various nuisances resulting from the mining companies operating in their environment, they also recognised significant social aspects related to employability and access to relatively cheap fuel. However, they do not realise the social involvement of mines, which is one of the conditions of sustainable development. Pilot studies allowed for the initial identification of problems and verification of the research tool utilised in this study.
Application of Coordinate Measuring Arm for Accurate Measurement of Child Growth
Authors: Rępalska Marta , Woźniak Adam , Kulus Marek 
Published: October 2018

Abstract
The article describes an approach to measure child growth using a coordinate measuring arm. For this purpose, a test set up has been built to measure the lower leg length directly on the knee surface and with the help of a plate. The use of the plate resulted in the distribution of pressure on the surface to be measured. Based on the results, the LLV (a lower leg growth velocity) was determined and studies were carried out to estimate the uncertainty of this factor. The obtained LLV results at 0.4 mm/week, correspond to the results of studies conducted on specialist test set-ups for knemometric measures described in the literature. The obtained results also allow recognizing periods of good health and bad health of the child.
Crystal structure of 2-(4-bromophenyl)-1,3-dimethyl-1H-perimidin-3-ium iodide, C19H16BrIN2
Authors: Zou Long-Sheng , Yuan Xian-You 
Published: October 2018

Abstract
C19H16BrIN2, monoclinic, P21/c (no. 14), a = 7.3409(17) Å, b = 18.494(4) Å, c = 12.905(3) Å, β = 93.372(3)°, V = 1749.0(7) Å3, Z = 4, R
gt(F) = 0.0205, wR
ref(F
2) = 0.0512, T = 296(2) K.
Evaluation of Tendency to Blackspot Bruising and Enzymatic Discoloration of Potato Tubers
Authors: Hara-Skrzypiec Agnieszka 
Published: October 2018

Abstract
Enzymatic discoloration of potato tubers initiated by mechanical impact bruising and the discoloration which appears after tuber cutting are crucial quality traits of the cultivated potato. The presented determination of blackspot bruise susceptibility includes evaluation of the trait with two impact methods - the rotating drum and the falling bolt. These two methods affect both the physical and the biochemical properties of tubers. Evaluation of the discoloration potential after tuber cutting (ED) is also discussed. Evaluating the discoloration potential of tubers is one of the most important points in determining potato quality.
Assessment of Phytotoxic Potential of Potato Genotypes
Authors: Sołtys-Kalina Dorota 
Published: October 2018

Abstract
In the laboratory studies on allelopathy, phytotoxicity is defined as a negative impact of plant’s extracts or natural compounds derived from plants, on germination and/or growth of the tested (acceptor) plant. Glycoalkaloids are the main biologically active compounds of the potato and are involved in potato phytotoxicity (the correlation coefficient of the length of the test plant with the concentration of total glycoalkaloids present in the leaf extracts of forty potato genotypes was r = -0.41). The assessment of phytotoxic abilities of the potato is a two-step procedure which consists of determining glycoalkaloids in potato leaf extracts and analyzing the root and hypocotyl lengths of the test plant growing in potato leaf extracts.
Evaluation of Potato Cultivars and Breeding Lines for Resistance to Globodera Rostochiensis and Globodera Pallida
Authors: Przetakiewicz Anna , Milczarek Dorota 
Published: October 2018

Abstract
Nematodes are among the most important agents affecting potato crops. Heavy infestations by Globodera rostochiensis and G. pallida can cause significant yield losses and limit the choice of potato cultivars that can be grown effectively (Oerke, 2006). Breeding of new potato cultivar resistant to G. rostochiensis and G. pallida is a long-term process. It is preceded by screening of potato breeding lines for resistance in repeated biotests, which seems to be the most effective and safest method of protection. Evaluation of nematode resistance is an important element of characterization of breeding lines and new cultivars. Resistance to Globodera spp. is evaluated in biological tests. The use of DNA markers for detecting nematode resistance genes may be an alternative approach to phenotypic evaluation of resistance degree of potato plants (Jena and Mackill, 2008). The goal of this report is focused on a description of resistance assessment procedure of breeding lines and varieties of potato to PCN and on comparison of biological and molecular methods of resistance evaluation. Presented information is addressed to both breeders and Polish inspection services.
Laboratory Assessment of Potato Resistance to Phytophthora Infestans
Authors: Brylińska Marta , Śliwka Jadwiga 
Published: October 2018

Abstract
Resistance breeding is a very important alternative to chemical control of late blight. Many resistance (R) genes from the wild Solanum species have been discovered and introduced into the cultivated potato. The laboratory methods to assess the resistance to late blight such as tests on detached leaflets, leaves, tuber slices, or whole tubers, are easy, cheap, fast and provide a good estimation of resistance that can be further confirmed in field trials for the selected material. Laboratory assessment is particularly useful for materials, in which major resistance genes segregate and the resistance is qualitative rather than quantitative.
Field Evaluation of Potato Resistance Against Phytophthora Infestans under Natural Infection Pressure
Authors: Plich Jarosław , Tatarowska Beata 
Published: October 2018

Abstract
Although development of potato cultivars resistant to late blight has long been one of the primary goals of potato breeding programs, several different methods of field resistance evaluation have been used by potato breeders. Recently, within the EucaBlight network (www.euroblight.net), common methods of late blight evaluation have been agreed on, and these methods are currently highly recommended for use by all those interested in evaluating the resistance of the potato to late blight. Here, we describe a method of evaluating potato resistance in field conditions routinely used at Młochów Research Center, which is compliant with recommendations of the EucaBlight protocol.
Sampling, Maintenance and Pathotype Identification of Synchytrium Endobioticum (Schilb.) Perc
Authors: Przetakiewicz Jarosław 
Published: October 2018

Abstract
Plant Breeding and Acclimatization Institute - National Research Institute (IHAR-PIB) is responsible for pathotype identification of Synchytrium endobioticum isolates collecting from Poland. Pathogenicity tests are carried out using the Glynne-Lemmerzahl method, according to EPPO Standard PM 7/28. Pathotypes are defined based on their reaction to a range of well-characterized differential cultivars of potato. Assessment of one isolate of the fungus requires more than 20 differential cultivars. All pathotypes of S. endobioticum from Polish reference collection are multiplied and maintained (fresh warts) on tubers of extremely susceptible cultivars continuously. For all references pathotypes and isolates of S. endobioticum, the compost with winter sporangia are prepared for long-term of maintenance.
Assessment of Potato Resistance to Synchytrium Endobioticum
Authors: Przetakiewicz Jarosław , Plich Jarosław 
Published: October 2018

Abstract
In Poland the Plant Breeding and Acclimatization Institute - National Research Institute (IHAR-PIB) is responsible for officially assessing the resistance of potato breeding lines and cultivars to Synchytrium endobioticum. In the official assessment of wart resistance the modified Glynne-Lemmerzahl method is used. A full cycle of assessment of the wart disease resistance requires 42 - 45 tubers per cultivar/breeding line. Forty two tubers are used in laboratory tests. To complete the laboratory tests, another 10 tubers are inoculated with winter sporangia of the fungus, using ring test. The final results are available after 3 years of investigation. If necessary, the full cycle of resistance tests to S. endobioticum can be performed during one year on 15 tubers in each of the 3 replications (45 tubers in total). Molecular verification of potato genotypes resistance to pathotype 1(D1) is possible with the use of SCAR marker Nl25-1400. Nevertheless, an official phenotypical assessment of advanced breeding lines, as the final verification of their resistance, is required.