bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChR: Dynamic Functional Constraints Checking in R
Authors: Grzanek Konrad 
Published: February 2018

Abstract
Dynamic typing of R programming language may issue some quality problems in large scale data-science and machine-learning projects for which the language is used. Following our efforts on providing gradual typing library for Clojure we come with a package chR - a library that offers functionality of run-time type-related checks in R. The solution is not only a dynamic type checker, it also helps to systematize thinking about types in the language, at the same time offering high expressivenes and full adherence to functional programming style.
Application of Moldflow Simulation in Injection Molding of Plastic Tank
Authors: Tutak Piotr 
Published: February 2018

Abstract
This article presents an application of moldflow simulation to optimize the injection molding process of charge air cooler plastic tank. The work shows the advantages of this kind of simulation software and information that it can provide. It also explains how big role today play simulation softwares and how they can improve product and reduce development cost.
Design and Numerical Analysis of an All-optical 4-channel Power Splitter in E, S, C, L, and U Bands via Nano-line Defects in Photonic Crystal
Authors: Olyaee Saeed , Seifouri Mahmood , Azimi Sourani Ebrahim , Dhasarathan Vigneswaran 
Published: February 2018

AbstractIn the present study, the propagation of electromagnetic waves in a square-lattice photonic crystal waveguide (PCW) is investigated using the finite-difference time-domain (FDTD) method. Then, the plane wave expansion (PWE) method is utilized to calculate the 2D photonic crystal band structure. To realize the desired waveguide, nano-line defects are introduced. The results of the numerical simulations and optimization scanning indicate that for the proposed photonic crystal structure consisting of silicon circular dielectric rods with a radius of 84 nm, a band gap can be achieved in the wavelength range of 1.34 μm<λ<1.93 μm. This wavelength range covers E, S, C, L, and U communication bands. Subsequently, by eliminating the rods in four parts of the structure, an all-optical 4-channel splitter can be designed. The numerical simulation results indicate that by coupling a light source to the main path of the structure and propagating it through each channel, the powers of the 4 output facets become approximately the same. The output power of channels 1 and 2 equals to 24.5 % of the input power, and the output power of channels 3 and 4 is 21 % of the input power and the remaining 9 % is lost in the structure as the leakage power. Since the 1.55 μm wavelength is within the band gap, that is the telecommunication band C, this device can be used as a power splitter.
Preliminary observations on home ranges and natural history of Scotinomys teguina in Costa Rica
Authors: Ribble David O. , Rathbun Galen B. 
Published: February 2018

Abstract
We conducted a brief radiotelemetry study of Scotinomys teguina (Alston’s singing mice) in Costa Rica to better understand their natural history and spatial ecology. We radio-collared five mice, one of which was quickly eaten by a pitviper. The home ranges of the remaining mice were in moist habitats and ranged from 255 to 1620 m2, with extensive overlap between adjacent individuals. Singing mice, being small, diurnal, uniformly dark-colored insectivores foraging in dense forest floor habitats, have an adaptive syndrome similar to soricids, which may be due to the low diversity of shrews through Central America.
Crystal Structure of 3-((3-hydroxybenzyl)ammonio)-3-phenylpropanoate, C16H17NO3
Authors: Wang Wan-Wan , Chen Xing-Ying , Wu Wei-Na 
Published: February 2018

Abstract
C16H17NO3, orthorhombic, Pna21 (no. 33), a = 10.3470(3) Å, b = 7.9347(2) Å, c = 17.0947(4) Å, V = 403.48(6) Å3, Z = 4, R
gt(F) = 0.0427, wR
ref(F
2) = 0.1044, T = 296(2) K.
Crystal structure of bis(acetato-κO)-bis(1-(pyridin-2-yl)ethan-1-one oxime-κ2
N,N′)nickel(II), C18H22N4NiO6
Authors: Zuo Jian 
Published: February 2018

Abstract
C18H22N4NiO6, triclinic, P1̅ (no. 2), a = 9.3398(13) Å, b = 9.9707(11) Å, c = 12.0063(18) Å, α = 89.829(3)°, β = 71.931(2)°, γ = 74.243(2)°, V = 1019.0(2) Å3, Z = 2, R
gt(F) = 0.0472, wR
ref(F
2) = 0.1305, T = 298(2) K.
The electrophilic aromatic substitution approach to C–H silylation and C–H borylation
Authors: Bähr Susanne , Oestreich Martin 
Published: February 2018

Abstract
Several approaches toward electrophilic C–H silylation of electron-rich arenes are discussed, comprising transition-metal-catalyzed processes as well as Lewis-acid- and Brønsted-acid-induced protocols. These methods differ in the catalytic generation of the silicon electrophile but share proton removal in form of dihydrogen. With slight modifications, these methods are often also applicable to the related electrophilic C–H borylation.
Efficient decontamination of naturally occurring radionuclide from aqueous carbonate solutions by ion flotation process
Authors: Mahmoud Mamdoh R. , Othman Sameh H. 
Published: February 2018

Abstract
The present study evaluates the performance of ion flotation process for removal of uranyl tricarbonate complex, UO2(CO3)3
4−, which is the dominant species in many aqueous media particularly seawater, from aqueous solutions using cetyltrimethylammonium bromide, CTAB, as a cationic surfactant. Flotation of UO2(CO3)3
4− as a function in the solution pH is investigated in absence and in presence of carbonate. Removal percentage >99% is achieved in the pH range 8.5–11.5 in presence of 5×10−3 M carbonate. The influence of concentrations of ethanol (0.1–2% v/v) and CTAB (5×10−5–1.4×10−3 M) show that UO2(CO3)3
4− is efficiently removed at concentrations of 0.5–1.5% v/v and 4×10−4–1×10−3 M, respectively. Based on the obtained kinetic data, the flotation mechanism and the flotation rate are investigated using two different flotation models. Floatability of UO2(CO3)3
4− in presence of different cations (Ba2+, Ca2+, Mg2+ and Sr2+) and anions (NO3
−, Br−, Cl−, SO4
2− and HPO4
2−) is studied. Except for Mg2+ and NO3
−, the flotation efficiency of UO2(CO3)3
4− is significantly decreased at concentrations higher than 1×10−3 and 5×10−3 M of the studied cations and anions, respectively. Ion flotation process is efficiently applied for removal of uranium(VI), R%>98.5%, from seawater. Accordingly, ion flotation can be considered as a promising technique and thus its feasibility for removal and/or recovery of uranium(VI) from many aqueous environment.
Design of Concept of Sustainable Marketing Communication Strategy for a Ideal Industrial Enterprise and Practical Applications of this Concept
Authors: Šujaková Monika , Golejová Simona , Sakál Peter 
Published: February 2018

Abstract
In the contribution the authors deal with the design and use of a sustainable marketing communication strategy of an ideal industrial enterprise in the Slovak Republic. The concept of an ideal enterprise is designed to increase the enterprise's sustainable competitiveness through the formation of a corporate image. In the framework of the research, the practical application of the draft concept was realized through a semi-structured interview in the form of propositional logic.
The Application of Multinomial Logistic Regression Models for the Assessment of Parameters of Oocytes and Embryos Quality in Predicting Pregnancy and Miscarriage
Authors: Milewska Anna Justyna , Jankowska Dorota , Więsak Teresa , Acacio Brian , Milewski Robert 
Published: February 2018

Abstract
Infertility is a huge problem nowadays, not only from the medical but also from the social point of view. A key step to improve treatment outcomes is the possibility of effective prediction of treatment result. In a situation when a phenomenon with more than 2 states needs to be explained, e.g. pregnancy, miscarriage, non-pregnancy, the use of multinomial logistic regression is a good solution. The aim of this paper is to select those features that have a significant impact on achieving clinical pregnancy as well as those that determine the occurrence of spontaneous miscarriage (non-pregnancy was set as the reference category). Two multi-factor models were obtained, used in predicting infertility treatment outcomes. One of the models enabled to conclude that the number of follicles and the percentage of retrieved mature oocytes have a significant impact when prediction of treatment outcome is made on the basis of information about oocytes. The other model, built on the basis of information about embryos, showed the significance of the number of fertilized oocytes, the percentage of at least 7-cell embryos on day 3, the percentage of blasts on day 5, and the day of transfer.
Imaging of the Relationship Between Eating Habits of Parents of Preschool Children and Patterns of Children’s Consumption of Fast-food Type Products With the Use of Correspondence Analysis Methods
Authors: Stachurska Marta , Milewski Rafał , Dzięgielewska Sylwia , Milewska Anna Justyna 
Published: February 2018

Abstract
Health behaviours of preschool children have a considerable impact on the shaping of habits later on in their lives. Parents’ and guardians’ role is to develop positive health patterns and represent exemplary models to be followed by children. The aim of the paper is to present the use of correspondence analysis for the assessment of the relationship between eating habits of parents and children, as well as for the determination of the most common situations in which preschool children consume fast-food products and to find the relationship between the frequency of fast-food consumption and BMI values in preschool children. The tests were carried out with the use of an own survey carried out in kindergartens in Białystok among parents dropping off and picking up children. 149 correctly filled questionnaires were obtained. The statistical analysis employs the chi-squared test and correspondence analysis. Among the tested children, a statistically significant relationship between body weight and sex was obtained. In the group of children and parents consuming fast-foods, a statistically significant relationship between the frequency of children’s and parents’ consumption of the products in question was noticed. A statistically significant relationship between the age of introduction of fast-food products into the child’s diet and their BMI was found. A situation that was statistically significant as far as contribution to frequent consumption of fast-food products by children, i.e. at least once a week (as compared to sporadic), were children and parents shopping together. The relationship between the frequency of fast-food consumption by parents and children was presented in the form of correspondence maps, as well as the relationship between the child’s BMI and the age when the first fast-food product is served, and the relationship between the child’s BMI and the frequency of their consumption of fast-foods. Unfortunately, despite the high awareness among parents of the harmful effects of fast-food products and the widespread health education programmes, a number of the children in kindergartens were overweight or even obese. For this reason, the quality of the educational programmes in kindergartens, as well as in various media outlets, needs to be improved, with emphasis put on their effectiveness, in order to minimise the problem of the occurrence of overweight and obesity in children. It is also important for parents rearing children to pay special attention not only to their children’s menus, but also to foods consumed in the presence of children.
Application of Thermal Imaging and PWC170 Test for the Evaluation of the Effects of a 30-Week Step Aerobics Training
Authors: Zuzda Jolanta G. , Latosiewicz Robert , Bras Rui 
Published: February 2018

Abstract
The aim of this paper is to verify whether step aerobics training (SAT) has an impact on the temperature of deep muscles of the spine of young, healthy subjects and if there exists a relationship between the maximal oxygen uptake (VO2max) and thermal results. The study was conducted in a group of 21 subjects of both sexes, aged 20.2 ± 0.38. The step aerobics training sessions lasted 30 weeks, one training session per week, 60 minutes per session. Thermograms of the spine were taken with the use of an infrared thermographic camera. Instrumental measurements included BMI, vital capacity of the lungs, and maximal oxygen uptake (VO2max). After a 30-weeklong SAT, a statistically significant increase in the average temperature of the muscles of the thoracic and lumbar spine was observed in subjects of both sexes (1.2◦C and 1.28◦C, respectively, p < 0.05). At the same time, VO2max increased from 42.98 ml/kg/min to 43.6 ml/kg/min in male subjects and from 40.4 ml/kg/min to 41.1 ml/kg/min in female subjects (p > 0.05). The relationship between VO2max and temperature of the muscles of the thoracic and lumbar spine after the 30th SAT was not statistically significant (r = - 0.28; p = 0.226; r = - 0.11; p = 0.634, respectively). The study showed that a 30-weeklong step aerobics training (SAT) had a positive impact on thermoregulation of apparently healthy male and female subjects aged 20. Furthermore, it can be safely assumed that thermography may be used as a non-invasive method of examination of the thermoregulation mechanism of SAT participants.
Bayesian estimation of Gegenbauer long memory processes with stochastic volatility: methods and applications
Authors: Phillip Andrew , Chan Jennifer S.K. , Peiris Shelton 
Published: February 2018

Abstract
This paper discusses a time series model which has generalized long memory in the mean process with stochastic volatility errors and develops a new Bayesian posterior simulator that couples advanced posterior maximisation techniques, as well as traditional latent stochastic volatility estimation procedures. Details are provided on the estimation process, data simulation, and out of sample performance measures. We conduct several rigorous simulation studies and verify our results for in and out of sample behaviour. We further compare the goodness of fit of the generalized process to the standard long memory model by considering two empirical studies on the US Consumer Price Index (CPI) and the US equity risk premium (ERP).
Endermologie New Aproach in the Medicine Treatment
Authors: Kubala Ondrej , Mezencevová Viktória , Šajgalík Michal , Drbúl Mário , Daniš Igor , Martinček Juraj , Pustay Jozef 
Published: February 2018

Abstract
Experiment includes the study and identification of monolithic ceramic mining tools by machining the Domex 700 steel that belongs to the group of tough metals with high tensile strength. During the process of machining, the substandard high cutting speeds were used. Identification of ceramic mining tools included the analysis of cutting edge wear and the construction of map of surface roughness parameter Rz dependence on the change of cutting conditions for a given range (machine and material).
SOA – The Link Between Modern Educational Technologies and Mobile Learning in the Higher Education Landscape
Authors: Popa Strainu Roxana Marina , Georgescu Mircea 
Published: February 2018

Abstract
Modern educational technologies encompass a variety of variables such as people, processes, assets, environments, technology. These variables are part of a complex system which has some important properties and a final purpose: delivering learning material and keeping track of the recipient’s evolution and development. The purpose of this paper is to define the system of modern educational technologies with the help of its variables and internal or external processes as well as to find where mobile learning fits in this large system. From a technical point of view we want to analyze whether Service Oriented Architecture (SOA) is enough or proper to integrate mobile learning in this system. At the end we should be able to decide if dedicated mobile apps, or mobile friendly sites or a combination of those two are suited to deliver the results we are looking for with the support of SOA, if we consider the variety of devices and operating systems we are trying to integrate.
On the Diet and Foraging Strategy of Tundra Waders at Sivash
Authors: Kirikova T. A. 
Published: February 2018

Abstract
The feeding on aquatic invertebrates, intensity and efficiency of forage intake were studied at the Sivash lagoons in 1995–2002 by the example of 6 wader species (217 birds). The diet composition significantly varied from seeds of plants to different species of aquatic and soil organisms. The diet at Eastern Sivash was based on Polychaeta, at Central Sivash — on Crustacea and chironomid larvae (Insecta). Foraging intensity depended on the abundance of main prey and the size of prey items taken. We distinguished the studied wader species as “probers” and “gatherers” of forage. The highest foraging intensity among “probers” and “gatherers” were observed at the Sivash lagoons in feeding sites with a high number of chironomid larvae, and the lowest one — in feeding sites with a polychaeta worm Hediste diversicolor. The wader foraging intensity was associated with high density and availability of prey items: at Central Sivash — chironomid larvae and brine shrimps (Artemia salina), at Eastern Sivash — chironomid larvae and polychaetes. Results of the stomach analysis and obtained correlations indicate a determinative role of polychaetes, molluscs, brine shrimps and chironomids in the foraging behaviour and distribution of the studied species of waders at migratory stopovers of the Azov-Black Sea Region.
Painlevé Test, Bäcklund Transformation and Consistent Riccati Expansion Solvability for two Generalised Cylindrical Korteweg-de Vries Equations with Variable Coefficients
Authors: El-Shiekh Rehab M. 
Published: February 2018

Abstract
In this paper, the integrability of the (2+1)-dimensional cylindrical modified Korteweg-de Vries equation and the (3+1)-dimensional cylindrical Korteweg-de Vries equation with variable coefficients arising in dusty plasmas in its generalised form was studied by two different techniques: the Painlevé test and the consistent Riccati expansion solvability. The integrability conditions and Bäcklund transformations are constructed. By using Bäcklund transformations and the solutions of the Riccati equation many new exact solutions are found for the two equations in this study. Finally, the application of the obtained solutions in dusty plasmas is investigated.
Effect of Varying Pnictogen Elements (Pn=N, P, As, Sb, Bi) on the Optoelectronic Properties of SrZn2Pn2
Authors: Murtaza G. , Yousaf N. , Laref A. , Yaseen M. 
Published: February 2018

Abstract
Pnictogen-based Zintl compounds have fascinating properties. Nowadays these compounds have gained exceptional interest in thermoelectric and optoelectronic fields. Therefore, in this work the structural, electronic and optical properties of SrZn2Pn2 (Pn=N, P, As, Sb, Bi) compounds were studied using state-of-the-art density functional theory. The optimised lattice parameters (ɑ, c, c/ɑ and bond lengths) are consistent with the experimental results. The bulk moduli and c/a showed a decrease when changing the Pnictogen (Pn) anion from N to Bi in SrZn2Pn2 (Pn=N, P, As, Sb, Bi). The modified Becke-Johnson potential is used for band structure calculations. All compounds show semiconducting behaviour except SrZn2Bi2, which is metallic. Pn-p, Zn-d and Sr-d play an important role in defining the electronic structure of the compounds. The optical conductivity and absorption coefficient strength are high in visible and ultraviolet regions. These band structures and optical properties clearly show that SrZn2Pn2 compounds are potential candidates in the fields of optoelectronic and photonic devices.
Electrical Conductivities of Low-Temperature KCl-ZrCl4 and CsCl-ZrCl4 Molten Mixtures
Authors: Salyulev Alexander B. , Potapov Alexei M. 
Published: February 2018

Abstract
The electrical conductivities of molten KCl-ZrCl4 and CsCl-ZrCl4 mixtures, including their heterogeneous (melt+crystals) ranges, were measured for the first time. The concentration ranges were 65–72 and 66–75 mol.% of ZrCl4, and the temperature ranges were 482–711 and 548–735 K, respectively. The measurements were carried out in cells of an original design.
Exercise Technique: Dumbbell Clean
Authors: Hedrick Allen 
Published: February 2018

ABSTRACT
ENHANCING MUSCULAR POWER IS AN IMPORTANT COMPONENT OF TRAINING, BOTH FOR ATHLETES AND THOSE TRAINING FOR GENERAL FITNESS. THE WEIGHTLIFTING MOVEMENTS ARE RECOGNIZED AS AN EFFECTIVE TRAINING METHOD WHEN THE GOAL IS ENHANCED POWER DEVELOPMENT. LESS RECOGNIZED IS THAT THE WEIGHTLIFTING MOVEMENTS CAN BE EFFECTIVELY PERFORMED WITH DUMBBELLS. THE PURPOSE OF THIS ARTICLE IS TO DESCRIBE THE TECHNIQUE INVOLVED IN THE DUMBBELL CLEAN AND IDENTIFY SOME OF THE BENEFITS THAT CAN OCCUR AS A RESULT OF PERFORMING THIS EXERCISE WITH DUMBBELLS.
Modulus and Damping of Asphaltic Concrete Using the Resonant Column
Authors: Allen DL , Deen RC 
Published: February 2018

Abstract
A program to determine Young's modulus of asphalt concrete using the resonant column is presented. The equipment is capable of longitudinal and torsional vibrations. The specimens were tested at three temperatures. A copper heating coil mounted inside the apparatus was used to control specimen temperature. The basic properties of the test material are also described. The two major problems of this particular program were the loss of coupling between the test specimen and the apparatus and the failure to effectively reduce spurious machine vibrations at high frequencies. As expected, modulus and damping were functions of temperature.
Influence of coaches behaviour on elite volleyball players' motivational climate and performance satisfaction
Authors: Liew Yi Amy Loh , Wah Teo Eng , Polman Remco 
Published: February 2018

Introduction. Coaching behaviour, motivational climate and its influence towards performance satisfaction are important in understanding the development and growth of athletes. In general, positive coaching behaviours could help in enhancing the motivational climate and satisfaction of athletes while negative coaching behaviour might have the opposite effect. Therefore, this study explored the influence of volleyball coaches’ behaviour on elite volleyball players’ motivational climate and performance satisfaction. Methodology. Three hundred and twenty-eight elite volleyball players (137 male and 191 female, age: 24.42 ± 8.92 years old) participated in this study. They completed three questionnaires: the Coaching Behaviour Questionnaire (CBQ), Perceived Motivational Climate in Sport Questionnaire-2 (PMCSQ-2), and Athlete Satisfaction Questionnaire (ASQ). These questionnaires were used to assess athletes’ perceptions of their coaches’ behaviour, to examine the influence of athletes’ perceptions of the individual feedback received on their perceptions of the team’s motivational climate and to measure the elite volleyball players’ satisfaction of their team’s performance. Results & Discussion. There was a positive relationship between motivational climate and performance satisfaction (r=0.25); coaching behaviour and performance satisfaction (r=0.26); motivational climate and performance satisfaction (r=0.40). For CBQ, the mean score showed that coach support (2.97 ± 0.40) was the most important as compared to negative coaching behaviour (2.44 ± 0.45). For ASQ, the mean score showed that team integration (5.33 ± 1.00) was the most important subscale influencing athlete satisfaction. The lowest rated athlete satisfaction was external agents, example, facilities and supporters (4.56 ± 0.95). For PMCSQ-2, a higher mean was reported for task-involving climate, example, cooperative learning, effort/improvement, important role (5.36 ± 0.89) than ego-involving climate, example, intra-team member rivalry, unequal recognition, punishment for mistakes (4.09 ± 0.95). Conclusion. Coaches should look into their own coaching behaviour because it is a fundamental aspect in enhancing the performance of athletes with respect to motivational climate and performance satisfaction.