bluuebunny/crossref_metadata_2025_split huggingface dataset:
Spatial Distribution of BTEX and Inorganic Pollutants During Summer Season in Yalova, Turkey
Authors: Tecer Lokman Hakan , Tagil Sermin , Ulukaya Osman , Ficici Merve 
Published: January 2018

Abstract
The objective of this research is to determine the atmospheric concentrations and spatial distribution of benzene (B), toluene (T), ethylbenzene (E) and xylenes (X) (BTEX) and inorganic air pollutants (O3, NO2 and SO2) in the Yalova atmosphere during summer 2015. In this study, a combination of passive sampling and Geographical Information System-based geo-statistics are used with spatial statistics of autocorrelation to characterise the spatial pattern of the quality of air based on concentrations of these pollutants in Yalova. The spatial temporal variations of pollutants in the air with five types of land-use, residence, rural, highway, side road and industrial areas were investigated at 40 stations in Yalova between 7th August 2015 and 26th August 2015 using passive sampling. An inverse distance weighting interpolation technique was used to estimate variables at an unmeasured location from observed values at nearby locations. The spatial autocorrelation of air pollutants in the city was investigated using the statistical methods of Moran’s I in addition to the Getis Ord Gi. During the summer, highway and industrial sites had higher levels of BTEX then rural areas. The average concentration of toluene was measured to be 5.83 μg/m3 and this is the highest pollutant concentration. Average concentrations of NO2, O3 and SO2 are 35.64, 84.23 and 3.95 μg/m3, respectively. According to the global results of Moran’s I; NO2 and BTEX had positive correlations on a global space at a significant rate. Moreover, the autocorrelation analysis on the local space demonstrated significant hot spots on industrial sites and along the main roads.
The Effect of Ionic Liquids With (–)-Menthol Derivative Containing a Chloride Anion to Weed
Authors: Biczak Robert , Pawłowska Barbara , Feder-Kubis Joanna 
Published: January 2018

Abstract
Weeds constitute a huge group of undesirable plants, widespread throughout the world. They represent a big problem for most farmers, who implement different methods to fight against them. Thanks to their wide occurrence, weeds however, can be an excellent indicator of the quality of soil and the whole environment where they are present. In this paper, we present the impact of four alkylimidazolium chlorides with a natural terpene component introduced into the soil: (1R,2S,5R)-(–)-menthol and alkyl substituents containing 1, 4, 9 or 12 carbon atoms, on the growth and development of selected weed species. Compounds with the highest phytotoxic activity towards gallant soldier, white goosefoot and common sorrel were chlorides with methyl and butyl substituents, while compounds with nonyl and dodecyl substituents demonstrated a weak effect on these weeds. Phytotoxicity of the salts tested was largely dependent on the applied concentration of the compound and the genetic make-up of plant species used in the experiment. This was reflected in the inhibition of plants’ length and their roots, as well as changes in the content of dry matter and photosynthetic pigments.
Pre-requisites of successful strategic electronic coordination: the moderation effect of the ownership mechanism of inter-organisational information systems
Authors: Teryokhin Sergei , Hannås Gøril 
Published: January 2018

Abstract
In this paper, we attempt to explain how the ownership mechanism of an interorganisational information system (IOS) may impact strategic information exchange (electronic coordination) induced by specific investments in the IOS. Recent research and practice show that heavy investments in IOSs demonstrate mixed results with respect to their impact on the electronic coordination. Consequently, the search of additional factors is needed to help and explain under what circumstances the IOS investments for strategic purposes become beneficial for the companies in a buyersupplier dyad. Transaction cost economics (TCE) and the hostage model are used as a framework for the research. 198 observations of Norwegian companies in different branches of industry constitute the base of the empirical study. A buyer-supplier dyad is the unit of the analysis. A regression model of the relation between the IOS ownership mechanism and the strategic information sharing is used to test two hypotheses about the buyer-supplier collaboration via an IOS. The results demonstrate that the risk of unilateral specific investments in an IOS made by the buyer or the seller is attenuated by the ownership mechanism of the IOS. The willingness of a buyer to share their strategic information with the supplier via the IOS increases if the supplier invests in the IOS which is owned and controlled by the buyer. Conversely, the supplier becomes motivated to share certain sensitive strategic information with the buying company if the latter invests in the IOS which is owned and controlled by the supplier.
Dropout in an Online Training for Trainee Teachers
Authors: Stiller Klaus D. , Bachmaier Regine 
Published: January 2018

Abstract
High dropout rates are still a problem with online training. It is strongly suggested that learner characteristics influence the decision to persist in an online course or to drop out. The study explored the differences in domain-specific prior knowledge, motivation, computer attitude, computer anxiety, and learning skills between dropouts and active learners who enrolled in a vocational online training about media pedagogy for teachers. The data were collected from 575 trainee teachers from which three groups were formed: (a) students who only registered (n = 72) and (b) students who started learning but failed to complete any of the course modules (n = 124) and (c) active students who completed at least one module (n = 379). A dropout rate of 34.1% was observed. In general, only small effects were found. Students dropping out were older, had less prior knowledge, and lower skills in arranging an adequate learning environment.
Offering Authentic Learning Activities in the Context of Open Resources and Real-World Goals: A Study of Self-motivated Online Music Learning
Authors: Schmidt-Jones Catherine 
Published: January 2018

AbstractMany users of online open education resources (OERs) are learners seeking insights into problems encountered as they pursue their everyday interests and activities. As well as benefitting from intrinsic motivation, such authentic learning activity provides context that helps the learner absorb and integrate the meaning of the knowledge. The purpose of this study was to explore barriers that prevent some online learners from using OERs in this way. Participants had experienced difficulties using music theory OERs to pursue personal music-making goals. Provided with online tutoring through an action research methodology, they appeared to benefit particularly from five aspects of active guidance: additional motivation, connections between generalized knowledge and personal experience, relevant learning activities, focus of attention, and goal-oriented feedback. In an environment rich in open content, providing these supports, in activities oriented towards learners’ goals, may be a particularly valuable use of teaching time.
Enhancing Understanding, Flow And Self-Efficacy In Learners With Developmental And Attention Difficulties Through ICT-Based Interventions
Authors: Andersen Hanne Voldborg , Sorensen Elsebeth Korsgaard 
Published: January 2018

AbstractThe purpose of this paper is to investigate in which ways technologies may be used to increase inclusion and a feeling of flow and self-efficacy in learning processes when it comes to learners with developmental and attention deficits (focus learners) in a mainstream classroom. The paper is one piece of outcome of a wider study on ICT facilitated inclusion, and this current piece of research addresses the challenges of enhancing focus learners’ comprehension when working with the curriculum. Several technologies have been tried out in a real school context and seven types of interventions are identified as valuable for focus learners’ capability in learning processes. The paper discusses the findings and concludes that conscious use of technology-based interventions makes it possible to provide learning challenges balanced to the learners’ individual skills. But a broader understanding and acceptance by all stakeholders of the specific challenges of this group of learners in mainstream educational systems seems needed to fulfil the potential.
Pre-Service Computer Teachers’ Tendencies Towards the Use of Mobile Technologies: A Technology Acceptance Model Perspective
Authors: Çakıroğlu Ünal , Gökoğlu Seyfullah , Öztürk Mücahit 
Published: January 2018

Abstract
Drawing on the Technology Acceptance Model (TAM), this exploratory study examines the preservice teachers’ adoption of mobile technologies through the factors of current use, instructional use and future use in their teaching practices. Participants were 466 pre-service computer teachers enrolled at a public university in Turkey. A questionnaire developed by the researchers was used to collect data. Results indicated that the current use and instructional use factors had a strong positive correlation and also there was a similar correlation with the factor of future use and current use. Relationships between current, instructional, and future use of mobile technologies explained within the context of perceived usefulness, ease of use, and behavioural intention constructs of the TAM.
A note on split extensions of bialgebras
Authors: García-Martínez Xabier , Van der Linden Tim 
Published: January 2018

Abstract
We prove a universal characterization of Hopf algebras among cocommutative bialgebras over an algebraically closed field: a cocommutative bialgebra is a Hopf algebra precisely when every split extension over it admits a join decomposition. We also explain why this result cannot be extended to a non-cocommutative setting.
Fourier decomposition of segmented magnets with radial magnetization in surface-mounted PM machines
Authors: Tiang Tow Leong , Ishak Dahaman , Lim Chee Peng 
Published: January 2018

Abstract
This paper presents a generic field model of radial magnetization (RM) pattern produced by multiple segmented magnets per rotor pole in surface-mounted permanent magnet (PM) machines. The magnetization vectors from either odd- or even-number of magnet blocks per pole are described. Fourier decomposition is first employed to derive the field model, and later integrated with the exact 2D analytical subdomain method to predict the magnetic field distributions and other motor global quantities. For the assessment purpose, a 12-slot/8-pole surface-mounted PM motor with two segmented magnets per pole is investigated by using the proposed field model. The electromagnetic performances of the PM machines are intensively predicted by the proposed magnet field model which include the magnetic field distributions, airgap flux density, phase back-EMF, cogging torque, and output torque during either open-circuit or on-load operating conditions. The analytical results are evaluated and compared with those obtained from both 2D and 3D finite element analyses (FEA) where an excellent agreement has been achieved.
Deposition of gold nanoparticles from colloid on TiO2 surface
Authors: Rehacek Vlastimil , Hotovy Ivan 
Published: January 2018

Abstract
In this paper, experimental results are presented on the deposition of colloidal gold nanoparticles on the surfaces of TiO2 prepared on silicon/silicon dioxide. Important procedures, such as titanium dioxide surface hydrophilization as well as functionalization by an organosilane coupling agent (3-aminopropyl) trimethoxysilane and (3-mercaptopropyl) trimethoxysilane were investigated in order to obtain a metal oxide surface with the most convenient properties for immobilization of gold nanoparticles having a dense and uniform distribution. TiO2 nanotips prepared by reactive ion etching of oxide surface covered with self-mask gold nanoparticles are demonstrated.
Environmental Quality of Impact Drills
Authors: Hricová Beata , Lumnitzer Ervin 
Published: January 2018

Abstract
Environmental performance of each product is defined already at the stage of its design - in its pre-production stage. Environmental quality of the product is one of the most important factors of environmental performance of a product. Environmental quality includes a range of criteria that indicate the nature of the product and its environmental impact throughout its life cycle. The comparative analysis method is one of the ways to assess the environmental quality of the product. The article gives a specific example of the assessments carried out on the impact drills (of one specific brand) with different technical parameters.
Effects of Fusarium verticillioides and Lactobacillus Strains Inoculation on Growth and Antioxidant Enzymes Activity of Zea mays Plants
Authors: Kharazian Zohreh Akhavan , Aghdasi Mahnaz , Jouzan Gholamreza Salehi , Zamani Majid 
Published: January 2018

Abstract
The current research based on greenhouse experiment evaluates the impact of the Lactobacillus strains (Lactobacillus plantarum, Lactobacillus paralimentaris, Lactobacillus fermentum, Lactobacillus pentosus, and Lactobacillus buchneri) previously isolated from maize silage on the Fusarium verticillioides-infected maize plants. The growth parameters as well as catalase, superoxide dismutase, ascorbate peroxidase, and peroxidase antioxidant enzymes activity were investigated in one-month old seedlings, after inoculations with Fusarium or co-inoculations with Fusarium and the Lactobacillus strains. Application of Lactobacillus strains in maize seedlings significantly enhanced the plant growth and biomass. The best effect was observed when the L. buchneri was applied. It was revealed that inoculation with Fusarium stimulated antioxidant enzyme activity and co-inoculation with Lactobacillus strains reduced the enzyme activity, compared to Fusarium treatment alone. This is the first report that revealed the bioprotective role of Lactobacillus strains against F. verticillioides.
Morphometric Analysis of the Developmental Stages and Insecticidal Efficacy of Three Botanical Oils Against Adult Callosobruchus analis
Authors: Olufemi-Salami Folasade Kemisola , Akinneye Joseph Onaolapo , Salami Olufemi Samson 
Published: January 2018

Abstract
The developmental stages of Callosobruchus analis were observed under laboratory conditions at 28 ± 2 °C and 72 ± 5% relative humidity. The results showed that female C. analis began to lay eggs within 24 hours and have an oviposition period of 8.50 ± 0.70 days and an average of 13.00 ± 0.50 eggs were laid by individual C. analis throughout their lifetime. The mean developmental periods from egg to larva and larva to pupa were observed to be 8.50 ± 0.79 and 4.50 ± 0.70 days, respectively. The unmated bruchids were observed to have lived longer than the mated bruchids as the unmated bruchids lifespan was on average 10.50 ± 0.81 days, as opposed to 2.50 ± 0.75 days for mated females. Adult male C. analis have an average antenna length of 2.96 ± 0.08 mm which is slightly longer than 2.42 ± 0.12 mm on average for female bruchids. The three botanical oil extracts from Capsicum frutescens, Anacardium occidentale and Xylopia aethiopica used at 10.0% concentration were not effective, as none of them resulted in a mortality rate of 50% when recorded 3 days after treatment.
Anthropogenic pressure on the largest lakes of the River Tywa catchment
Authors: Kubiak Jacek , Machula Sylwia , Oszkinis Dorota , Rokicki Dominik 
Published: January 2018

Abstract
The largest lakes of the River Tywa basin i.e. Strzeszowskie, Dołgie, Swobnica and Dłużec (north-west Poland, West Pomeranian Lakeland) were studied in the period 2008–2013, usually in a six week cycle. The aim of the study was to determine the degree of anthropogenic pressure on the lakes. Anthropogenic pressure was assessed against the natural vulnerability of lakes to degradation and the actual rate of eutrophication, with particular consideration of the catchment areas. Catchments of the studied lakes were classified as III class – catchment with moderate possibility of matter supply to lakes. Lakes Swobnica and Dłużec are characterised by low resistance to degradation. Lake Strzeszowskie is categorised as having moderate resistance and Lake Dołgie is non-resistant to degradation and highly susceptible to external pressure. The rate of eutrophication of lakes Strzeszowskie and Dłużec was found to be moderate, whereas lakes Dołgie and Swobnica show a high rate of eutrophication. The analysis of nutrient loading reaching the waters of the aforementioned lakes shows that the main area source is arable land, and the fundamental point source is the inflow of river waters to each of the analysed reservoirs. Nutrient loading supplied by the river is several times higher than area load. Such conditions require protective action to be taken within the catchment area and particularly, intensive implementation of good agricultural practice. In the studied lakes, there is a significant predominance of incoming nutrient loadings over dangerous and admissible loads.
Residential Segregation at the Local Level in Poland. Case Studies for Praga Północ, Włochy and Ursynów
Authors: Jaczewska Barbara , Grzegorczyk Anna 
Published: January 2018

Abstract
The aim of this article is to answer two questions concerning the scale and the pattern of residential segregation in Warsaw at the local level and the character of contemporary processes accompanying and modifying this phenomenon. While examining residential segregation we have applied a multidimensional approach to underline the complex nature of this phenomenon. We have focused on data concerning different demographic and socio-economic categories. Furthermore we indicate and describe three socio-spatial, contemporary processes that have accompanied an increase in social inequalities in Warsaw (the creation of enclaves of poverty and wealth and the process of gentrification). The research reveals increasing social inequalities at the local level that began in the socialist era and have strengthened during the transformation period, as well as the stability of the socio-spatial pattern in selected districts that influence their local specifics.
Optimal design of the rotor geometry of line-start permanent magnet synchronous motor using the bat algorithm
Authors: Knypiński Łukasz 
Published: January 2018

Abstract
In this paper an algorithm for the optimization of excitation system of line-start permanent magnet synchronous motors will be presented. For the basis of this algorithm, software was developed in the Borland Delphi environment. The software consists of two independent modules: an optimization solver, and a module including the mathematical model of a synchronous motor with a self-start ability. The optimization module contains the bat algorithm procedure. The mathematical model of the motor has been developed in an Ansys Maxwell environment. In order to determine the functional parameters of the motor, additional scripts in Visual Basic language were developed. Selected results of the optimization calculation are presented and compared with results for the particle swarm optimization algorithm.
Knowledge of the Importance of Iodine in Nutrition among Adults in Latvia
Authors: Ciekure Elīna , Siksna Inese 
Published: January 2018

AbstractThe Food and Agriculture Organisation of the United Nations (FAO) states that it is essential for people to understand what constitutes a healthy diet and to know how to use their resources in the most effective way. Iodine is an essential nutrient for mammals, required as a mandatory structural and functional element of thyroid hormones. Previous studies in Latvia highlighted a tendency of reduced level of iodine for newborns, school-age children and pregnant women. No studies in the general adult population had been conducted yet. The aim of the study was to evaluate the level of knowledge regarding the role of iodine in nutrition in the adult population of Latvia. In total 199 adults participated in the survey. Data on the knowledge about the occurrence of iodine in nature and foodstuffs, the role of iodine in nutrition, and its deficiency were obtained. Results of the survey showed that only 4.5% of respondents used iodised salt daily in the diet. One-fourth knew that iodine is widely found in the environment and more than one-third knew all of the main functions of iodine in the human body. Salt and sea food were mentioned as the most common iodine sources. While iodised salt is used rarely, public awareness about the role of iodine is good and potential iodine deficiency in Latvia is likely due to unbalanced diet rather than lack of knowledge.
Comparison of Body Composition and Energy Intake of Young Female Ballet Dancers and Ordinary School Girls
Authors: Kalniņa Līga , Selga Guntars , Sauka Melita , Randoha Aija , Krasovska Eva , Lāriņš Viesturs 
Published: January 2018

Abstract
The aim of this study is to assess body fat level, energy and nutrient intake of adolescent ballet dancers and to compare these results with those of adolescents from ordinary school. Participants included 39 ballet dancers and 70 adolescents from ordinary school. Body composition was measured using a multi-frequency 8-polar bioelectrical impedance leg-to-hand analyser (X-Scan Plus II, Korea). Dietary intakes were assessed using a three-day estimated food record. Nutritional intake was calculated using the Nutri Survey software. Ballet dancers were slightly shorter, lighter, with less fat and fat-free mass compared to girls from ordinary school. 51.3% (95% CI 35.59 to 66.97) of ballet dancers and 4% (95% CI; 0.27 to 11.15) of ordinary school girls had a body fat level of 12% or less. The recommended amount of 35–45 kcal energy to kg fat-free mass for aesthetic sports was not reached by 42.1% (95% CI 27.61 to 50.65%) of ballet dancers. No statistically significant difference was found in percent body fat between ballet dancers who consumed energy less than the recommended amount compared to those who ate normally, but fatfree mass (p < 0.05) was lower in those who consumed 35–45 kcal energy to kg fat-free mass or less compared to those who ate more. The investigated groups had an inadequate intake of minerals and vitamins during the winter period.
Food Supply and Nutrition in the Bulgarian Army
Authors: Glushkov Pavlin 
Published: January 2018

Abstract
The main tasks of food logistics in the military formations are to provide the personnel with food, material and nutritional property, to maintain and refresh the stocks, as well as organize the nutrition of the personnel in peacetime and wartime according to the current nutrition norms.
It should be noted that food supply and the organization of nutrition bear its specific characteristics depending on the place where it is carried out and the force of the factors that influence it.
The present study focuses on the organization of nutrition in the stage of peacetime national training of military forces.
Improving the Efficiency of Outsourcing Services in the Bulgarian Armed Forces
Authors: Stefanov Nikolay 
Published: January 2018

Abstract
The outsourcing services in the sphere of armed forces could be introduced as a dynamic management strategy. The aim of this strategy is to relocate the non-functional activities to external contractors, mainly for a long period of time, in order to realise savings, increase the specialisation and improve the quality of the delivered services.
The ultimate goal is to provide additional resources and time to implement the core specific activities of the organisation. The efficiency of the outsourcing process is directly related to the ability of the military unit to carefully select which activities and services to outsource.
This article analyses the possibilities for increasing the efficiency of outsourcing services in the structures of the Bulgarian Armed Forces.