bluuebunny/crossref_metadata_2025_split huggingface dataset:
ULTRASONIC SOLDERING OF Cu AND Al2O3 CERAMICS BY USE OF Bi-La AND Bi-Ag-La SOLDERS
Authors: Koleňák Roman , Prach Michal , Kostolný Igor 
Published: May 2016

This work deals with the effect of solder alloying with a small amount of lanthanum on joint formation with metallic and ceramic substrate. The Bi-Ag – based solder with 2 wt.% lanthanum addition and Bi solder with 2 wt.% lanthanum addition were studied. Soldering was performed by a<br />fluxless process on the air, by activation with a power ultrasound. It was found out that, during the process of ultrasonic soldering, lanthanum is distributed on the boundary, both with the copper and the ceramic substrate, which enhances the joint formation. The bond with Al<sub>2</sub>O<sub>3 </sub>ceramics is of an adhesive character, without the formation of a new contact interlayer.
Influence of neural network structure and data-set size on its performance in the prediction of height of growth hormone-treated patients
Authors: Smyczyńska Urszula , Smyczyńska Joanna , Tadeusiewicz Ryszard 
Published: May 2016

Abstract
It is well known that the structure of neural network and the amount of available training data influence the accuracy of developed models; however, the exact character of this relation depends on the chosen problem. Thus, it was decided to analyze what impact these parameters have on the solution of the problem on which we work – the prediction of final height of children treated with growth hormone. It was observed that multilayer perceptron with a wide range of numbers of hidden neurons (from 1 to 100) could solve the problem almost equally well. Thus, this task seems to be rather simple, not requiring complex models. Larger networks tended to produce less accurate results and did not generalize well while working with the data not used in training. Repeating the experiment with the training data set reduced to 50% of its original content, as expected, caused a decrease in accuracy.
Anencephaly with placental adhesion
Authors: Mina Shyam Sundar , Kashyap Archana , Arya Sugandha 
Published: May 2016

Abstract
Anencephaly is a serious neural tube defect, in which the brain and cranial vault are grossly malformed. It occurs due to failure of cranial neurulation during embryonic development of cranial tissues. Anomalous placental attachment on an anencephalic head of a newborn is extremely rare. We report two cases of anencephaly in which the placenta were anomalously attached on an anencephalic head.
International agency over local land: Mine expansion and industrial priorities in the Town of Asbestos, Canada
Authors: Horssen Jessica van 
Published: May 2016

Abstract
From the late 19th to the late 20th century, the cities and industries of the world became increasingly reliant on fireproof materials made from asbestos. In focusing on the town of Asbestos, Canada, this paper will show how this process of market boom and bust shaped a fierce local culture rooted in working and living on a rapidly changing environment. By analyzing the successive expansions of the giant mine located in the centre of Asbestos, this paper will highlight how unique understandings of self and place develop in mining communities and form a complex culture rooted in a constantly changing environment.
Generic and disease-specific quality of life in adolescents with type 1 diabetes: comparison to age-matched healthy peers
Authors: Lukács Andrea , Sasvári Péter , Török András , Barkai László 
Published: May 2016

AbstractThis study aimed to evaluate the health-related quality of life (HRQoL) of adolescents with type 1 diabetes (T1DM) on the basis of the pediatric quality of life inventory™ (PedsQL™) generic and diabetes-specific modules, and to compare it to that of healthy peers.This retrospective case-control study involved 650 participants between ages of 13 and 19 years including 296 adolescents with T1DM from four diabetes centers and 354 healthy peers matched for age and gender from three different cities of the country. Participants completed the validated PedsQL™ for assessing the HRQoL. The analysis included an independent t-test to compare the means of the total and subscales of the PedsQL™ between boys and girls as well as between a healthy group and a group with T1DM. Gender differences in exercise, insulin therapy modalities were evaluated with the Pearson χAdolescents with T1DM have similar HRQoL in all domains when compared to their healthy counterparts. Females report worse HRQoL regardless of the presence of the disease. Insulin pump therapy facilitates better glycemic control and HRQoL. Regular exercise positively correlates with the generic HRQoL in both groups; however, it has no relationship with glycemic control.Optimal metabolic control and improved HRQoL are the eventual goals of diabetes management. Despite the difficulties, adolescents with diabetes can manage their disease well and live normal lives, similar to their healthy peers. Although diabetes-related problems exist, it seems that regular exercise and staying physically active, as well as promoting insulin pump therapy where it is applicable are related to favorable HRQoL.
The BV solution of the parabolic equation with degeneracy on the boundary
Authors: Zhan Huashui , Chen Shuping 
Published: May 2016

Abstract
Consider a parabolic equation which is degenerate on the boundary. By the degeneracy, to assure the well-posedness of the solutions, only a partial boundary condition is generally necessary. When 1 ≤ α < p – 1, the existence of the local BV solution is proved. By choosing some kinds of test functions, the stability of the solutions based on a partial boundary condition is established.
Liberation as a Paradigm for Full Humanity in Africa
Authors: Tshuma Ephraim 
Published: May 2016

Abstract
The study is a response to the call for papers that focuses on African issues and discusses the issue of liberation. This paper seeks to explore the theme of liberation beginning with its definition. It will then proceed by looking at the history of Israel discussing the Egyptian bondage. The identity and role of Moses will also be explored in light of the prominent role that the Hebrew Bible gives him in the exodus motifs. It also highlights the life and role of Jesus of Nazareth in human liberation. In addition it will also highlight the importance of liberation and will pay attention to the fight for freedom and independence in Africa. Finally it looks at the quest for liberation among marginalized women and children in Africa looking at their struggles in the 21st century. The essay will use examples from both theological and secular sources. The Biblical/theological examples will be drawn from the Hebrew Bible, the New Testament and commentaries. Since Africa is very big although sharing related issues, I will use specific examples from Zimbabwe and also use general information from across the continent.
Characteristics and Drivers of the Swiss “Job Miracle”
Authors: Siegenthaler Michael , Graff Michael , Mannino Massimo 
Published: May 2016

Abstract
Switzerland’s employment growth since the early 2000s was very high in both historical and international perspective, despite solid real wage increases and only moderate GDP growth. Yet, the reasons for the remarkable creation of jobs are largely unknown. We aim at filling this gap by studying the underlying characteristics and drivers of the Swiss “job miracle”. We first outline the characteristics of the “job miracle” and show that the observed job growth correlates with a substantial increase in the labor intensity of economic activity. We then discuss five potential drivers of the unprecedented employment growth, which are consistent with the facts. Our empirical results suggest that immigration was the key factor in explaining the “job miracle” as it raised local demand and thereby triggered the creation of additional jobs.
Cooling of Moving Wavy Surface through MHD Nanofluid
Authors: Mehmood Ahmer , Iqbal Muhammad Saleem , Mustafa Irfan 
Published: May 2016

Abstract
Heat transfer analysis has been carried out in the Magnetohydrodynamic (MHD) boundary layer formed near the wavy rough plate moving in x-direction. Due to the presence of metallic nanoparticle in the fluid and enhanced surface area of the plate as a consequence of surface texture, an increase in heat transfer rates is expected. However, the calculation of these enhanced rates of heat transfer is not straightforward because the convection phenomena become more complicated due to the motion of nanoparticle in the base fluid and also the waviness of the plate surface. The contribution of nanoparticle toward convective heat transfer is manifold which requires a suitable model in order to capture the correct physics. Famous Tiwari and Das model has been utilised in the current study. Percent increase in the rate of heat transfer is calculated for the nanoparticle of different metals, such as MWCNT, SWCNT, Al2O3, TiO2 and Ag. Appreciable increase in the rate of heat transfer is observed, which is 24% at the most for Al2O3 nanoparticle. The effect of applied magnetic field on the velocity profile, skin friction coefficient, and Nusselt number has also been presented through graphs. The concentration of the nanoparticle has been limited up to 10%.
Graded Neuronal Modulations Related to Visual Spatial Attention
Authors: Mayo J. Patrick , Maunsell John H. R. 
Published: May 2016

Studies of visual attention in monkeys typically measure neuronal activity when the stimulus event to be detected occurs at a cued location versus when it occurs at an uncued location. But this approach does not address how neuronal activity changes relative to conditions where attention is unconstrained by cueing. Human psychophysical studies have used neutral cueing conditions and found that neutrally cued behavioral performance is generally intermediate to that of cued and uncued conditions (Posner et al., 1978; Mangun and Hillyard, 1990; Montagna et al., 2009). To determine whether the neuronal correlates of visual attention during neutral cueing are similarly intermediate, we trained macaque monkeys to detect changes in stimulus orientation that were more likely to occur at one location (cued) than another (uncued), or were equally likely to occur at either stimulus location (neutral). Consistent with human studies, performance was best when the location was cued, intermediate when both locations were neutrally cued, and worst when the location was uncued. Neuronal modulations in visual area V4 were also graded as a function of cue validity and behavioral performance. By recording from both hemispheres simultaneously, we investigated the possibility of switching attention between stimulus locations during neutral cueing. The results failed to support a unitary “spotlight” of attention. Overall, our findings indicate that attention-related changes in V4 are graded to accommodate task demands.SIGNIFICANCE STATEMENTStudies of the neuronal correlates of attention in monkeys typically use visual cues to manipulate where attention is focused (“cued” vs “uncued”). Human psychophysical studies often also include neutrally cued trials to study how attention naturally varies between points of interest. But the neuronal correlates of this neutral condition are unclear. We measured behavioral performance and neuronal activity in cued, uncued, and neutrally cued blocks of trials. Behavioral performance and neuronal responses during neutral cueing were intermediate to those of the cued and uncued conditions. We found no signatures of a single mechanism of attention that switches between stimulus locations. Thus, attention-related changes in neuronal activity are largely hemisphere-specific and graded according to task demands.
Limitations of Neural Map Topography for Decoding Spatial Information
Authors: Avitan Lilach , Pujic Zac , Hughes Nicholas J. , Scott Ethan K. , Goodhill Geoffrey J. 
Published: May 2016

Topographic maps are common throughout the nervous system, yet their functional role is still unclear. In particular, whether they are necessary for decoding sensory stimuli is unknown. Here we examined this question by recording population activity at the cellular level from the larval zebrafish tectum in response to visual stimuli at three closely spaced locations in the visual field. Due to map imprecision, nearby stimulus locations produced intermingled tectal responses, and decoding based on map topography yielded an accuracy of only 64%. In contrast, maximum likelihood decoding of stimulus location based on the statistics of the evoked activity, while ignoring any information about the locations of neurons in the map, yielded an accuracy close to 100%. A simple computational model of the zebrafish visual system reproduced these results. Although topography is a useful initial decoding strategy, we suggest it may be replaced by better methods following visual experience.SIGNIFICANCE STATEMENTA very common feature of brain wiring is that neighboring points on a sensory surface (eg, the retina) are connected to neighboring points in the brain. It is often assumed that this “topography” of wiring is essential for decoding sensory stimuli. However, here we show in the developing zebrafish that topographic decoding performs very poorly compared with methods that do not rely on topography. This suggests that, although wiring topography could provide a starting point for decoding at a very early stage in development, it may be replaced by more accurate methods as the animal gains experience of the world.
Determinants of Genetic Diversity of Spontaneous Drug Resistance in Bacteria
Authors: Couce Alejandro , Rodríguez-Rojas Alexandro , Blázquez Jesús 
Published: May 2016

AbstractAny pathogen population sufficiently large is expected to harbor spontaneous drug-resistant mutants, often responsible for disease relapse after antibiotic therapy. It is seldom appreciated, however, that while larger populations harbor more mutants, the abundance distribution of these mutants is expected to be markedly uneven. This is because a larger population size allows early mutants to expand for longer, exacerbating their predominance in the final mutant subpopulation. Here, we investigate the extent to which this reduction in evenness can constrain the genetic diversity of spontaneous drug resistance in bacteria. Combining theory and experiments, we show that even small variations in growth rate between resistant mutants and the wild type result in orders-of-magnitude differences in genetic diversity. Indeed, only a slight fitness advantage for the mutant is enough to keep diversity low and independent of population size. These results have important clinical implications. Genetic diversity at antibiotic resistance loci can determine a population’s capacity to cope with future challenges (i.e., second-line therapy). We thus revealed an unanticipated way in which the fitness effects of antibiotic resistance can affect the evolvability of pathogens surviving a drug-induced bottleneck. This insight will assist in the fight against multidrug-resistant microbes, as well as contribute to theories aimed at predicting cancer evolution.
Жизненные стратегии равноногих ракообразных в условиях черноморского сообщества обрастания
Authors: Varigin A. Y. 
Published: May 2016

Рассмотрены характерные черты жизненных стратегий двух массовых видов равноногих ракообразных Idotea balthica basteri (Pallas, 1772) и Lekanesphaera monodi (Arcangeli, 1934), совместно обитающих в сообществе обрастания прибрежной зоны Одесского залива Черного моря. Отмечена сбалансированность межвидовых отношений изучаемых видов в данном сообществе. Их конкурентные отношения носили диффузный характер, отражающий относительно слабые по силе межвидовые взаимодействия. Экологические ниши этих видов перекрывались лишь по местообитанию. По трофическим и временным характеристикам конкуренция между ними ослаблена. Отмечена эффективность жизненных стратегий обоих видов ракообразных, что подтверждается их массовостью в сообществе обрастания Одесского залива Черного моря.
Indication of the condition of woody plants of parks in Dnipropetrovsk on morpho-physiological indexes
Authors: Ivanchenko О. E. , Bessonova V. P. 
Published: May 2016

The condition of woody plants of parks in the city of Dnipropetrovsk on morpho-physiological index of model trees was investigated. The highest values on the V.A. Alekseev vitality index were recorded for plants in Gagarin Park and Sevastopolskiy Park, the lowest values for Kalinin Park and Мolodezhnyj Park. The lowest values for length and thickness of annual sprouting relative to the control (Petrikovka Park) were found in Kalinin, Globa and Molodezhnyj parks for all studied species of trees, the smallest difference from the control group of plants being found for Robinia pseudoacacia L. There was a lower quantity of leaves on the annual sprouting in plants in Globa, Kalinin and Мolodezhnyj parks. In other parks, the difference between the experiment and the control was not statistically significant. The area of leaves in the trees was lower in the city parks compared with those of the park in the village, with the exception of Gagarin Park. More important, relative to the above-mentioned parameters, were differences in the assimilation area of the annual sprouting, with the exception of Gagarin Park. The amount of chlorophyll a + b in leaves of woody plants of different parks of the city less than in control. The greatest differences of pigment concentration in the leaves of Acer platanoides L. and Tilia plathyphyllos Scop. were found in Kalinin Park. For the leaves of the R. pseudoacacia no significant differences were found between the content of the amount of chlorophyll a + b in the trees which grow in Gagarin, Khmelnitsky and Sevastopolskiy parks and the background values for this parameter. It was found that the amount of chlorophyll a + b in the leaves of T. plathyphyllos and R. pseudoacacia by weight of the leaves on the annual sprouting was lower in the city parks compared with the trees in the village park, with the exception of Gagarin Park. For A. platanoides this difference was found to be significant in all experimental sites. It is appropriate to use such parameters as the length of the annual sprouting as a bioindicator of the environment annual sprouting, the leaf area, the content of chlorophyll a + b based on the weight of the leaves annual sprouting and assimilation area. As test-objects species sensitive to anthropogenic pollution, such as T. plathyphyllos and A. platanoides should be used. The trees in the best condition of vitality (according to the whole complex of indicators) are those in Gagarin, Shevchenko and Sevastopolskiy parks, the worst are in Kalinin, Globa and Мolodezhnyj parks.
Response of soil microflora to impact of heavy metals in zones of influence of railway transport
Authors: Bobryk N. , Kryvtsova M. , Nikolajchuk V. , Voloshchuk I. 
Published: May 2016

Monitoring research on the areas intensively and continuously affected by technogenic loading has remained topical until nowadays. The soil as a basic component of many ecosystems, including the structure of its microbial cenoses, remains an informative index of a system’s overall stability. The areas affected by railway transport have been scarcely studied. Due to the above, the aim of this work has been to establish the transformation regularities of soil microbial cenoses of territories close to railways and to establish the groups of microorganisms that are a sensitive criterion of technogenic vehicular influence. For the purpose of microbiological research, soil samples were taken at different distances from the railway track (0, 25, 50, 100 and250 m) within five monitoring sections of the Tchop – Uzhhorod – Sambor railway (in the territory of Zakarpatska oblast). The number of ecological trophic groups was identified by means of inoculation on nutrient media using the method of serial dilution of soil suspensions. The research showed that in all types of soils that were adjacent to railway tracks, the number of ammonifiers and spore microbiota was high due to the high content of heavy metals (beyond the background levels). Besides, the bacterial microflora on beef-extract agar was characterized by homogeneity with domination of enteric bacteria and spore bacteria. Simultaneously, the numbers of nitrogen-fixing microorganisms, micromycetes, oligonitrophils, amylolytic and pedotrophic microflorae were shown to be low compared to the control. Farther from the railway track, pigmental species of bacteria appeared in the soil samples, attesting to the activity of self-purification processes. Correlation analysis of the data showed that the soil microbiota of the railway-side areas was undergoing changes as affected by heightened contents of heavy metals. Existence of medium and close connections was established between the number of microorganisms of ecological trophic groups and the content of acid-soluble lead forms at the levels of 0.72–1.72 maximum permissible concentrations. It was the nitrogen-fixing microorganisms and microscopic fungi that showed a fast response to heavy metals, which was an indication of their possible use as indicators of the ecological state of technogenically transformed soils.
On the determination of hardness and elastic modulus in BaFe2As2 lamellar-like material
Authors: de Souza Gelson B. , Serbena Francisco C. , Jurelo Alcione R. , da Silva Simone A. , Pinheiro Lincoln B.L.G. , Dias Fábio T. , Mikowski Alexandre , Bud'ko Sergey L. , Thaler Alex , Canfield Paul C. 
Published: May 2016

Abstract
Wpływ procesów integracyjnych na handel międzynarodowy – przypadek krajów rozwijających się
Authors: Zysk Wojciech 
Published: May 2016

The study attempts to verify the hypothesis that the positive effects of regional integration processes of international business in developing countries lead to an increase in the value of trade, both in terms of growth rates of exports and imports, as well as an increase in the share of exports and imports in the total exchange inside the created groups. The international integration of developing countries brings them benefits as a result of customs duties and other barriers between themselves being reduced. The growth rate of exports and imports within the group is higher than the rate of growth of trade in the rest of the region and the rest of the world, and the share of exports and imports throughout the internal exports and imports is higher than the share of exports and imports with the rest of the world in total exports and imports.
Using Bayesian Statistics in Enterprise Demography
Authors: Kotlebová Eva , Láska Ivan 
Published: May 2016

Knowledge of the number of different kinds of enterprises that will be created in a coming year is essential information. It can be used in macroeconomic analyses and as a constituent of the background for economic policy.From a demographics point of view, we consider the creation (birth) of some enterprise as a basic indicator. It can also be approached from the point of view of inference, as the creation of enterprise is influenced by a wide variety of inputs. Enterprise creation may therefore be thought of as a random process.The analytic tools Bayesian statistics provide make it possible involve more kinds of information into statistical analysis and gradually update the parameter estimations. We used the conjugate family Poisson / gamma to estimate the number of enterprises to be created in a coming year. The considerations were concerned with the mean square error, which was used as the main criterion of the point estimation quality. We solved two kinds of problems: to find a Bayesian point estimation that has a smaller mean square error than the classical one in a predetermined interval, and, along with it, to model prior information in a very simple way.In finding some connection among the variables contained in the conjugate family Poisson / gamma, we solved both presented problems and also developed a simple algorithm for optimal point estimation of the Poisson distribution parameter. This algorithm was used to estimate the number of enterprises created.