bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Cost-effective Method for Resolution Increase of the Twostage Piecewise Linear ADC Used for Sensor Linearization
Authors: Jovanović Jelena , Denić Dragan 
Published: May 2018

Abstract
A cost-effective method for resolution increase of a two-stage piecewise linear analog-to-digital converter used for sensor linearization is proposed in this paper. In both conversion stages flash analog-to-digital converters are employed. Resolution increase by one bit per conversion stage is performed by introducing one additional comparator in front of each of two flash analog-to-digital converters, while the converters’ resolutions remain the same. As a result, the number of employed comparators, as well as the circuit complexity and the power consumption originating from employed comparators are for almost 50 % lower in comparison to the same parameters referring to the linearization circuit of the conventional design and of the same resolution. Since the number of employed comparators is significantly reduced according to the proposed method, special modifications of the linearization circuit are needed in order to properly adjust reference voltages of employed comparators.
COREDIV modelling of JET ILW discharges with different impurity seeding: nitrogen, neon, argon and krypton
Authors: Ivanova-Stanik Irena , Zagórski Roman 
Published: May 2018

Abstract
Numerical simulations with the COREDIV code of JET H-mode discharges with 25 MW of auxiliary heating in the ITER-like wall (ILW) configuration with different impurity seedings – nitrogen (N), neon (Ne), argon (Ar) and krypton (Kr) – are presented. All simulations have been performed with the same transport model and input discharge parameters like auxiliary heating, volume average plasma density, confinement factor. Only the seeded impurity puff rate was changed in the calculations. It appears that for the considered heating power of 25 MW and relatively low volume electron average density <n
e> = 6.2 × 1019 m−3, impurity seeding is necessary. It has been found that for every gas at the maximum level of the seeding rate, allowed by the code convergence, the power to the plate is reduced up to 2–4 MW, with electron temperature at the plate of about 2 eV, indicating semi-detached conditions in the divertor region. It should be noted, however, that in cases with low and medium Z impurity (N, Ne and Ar), tungsten radiation is a significant part of radiation losses and stays above 22–32% of the total energy losses, but for high Z impurity (Kr) it is reduced up to 10% of the total losses. The maximum of the Kr radiation is between the pedestal region and separatrix, showing that radiative mantle can be created, which might have a strong influence on the plasma parameters in the pedestal region.
Evolution of longitude description system. Example of Polish school geographical atlases (1771–2012)
Authors: Spallek Waldemar 
Published: May 2018

Abstract
The evolution of the mathematical foundations of maps in school geographical atlases, especially in 19th and 20th century, was one of the elements of the perception of progress in cartography by the didactics of geography. The biggest changes, ongoing also today, concerned cartographic projections used to maps design.
The evolution of the geographical coordinate system is a part of this process and the basis of the theory of cartographic projections. In the paper there are described changes concerning the location of the Prime Meridian and the method of the description of longitude – elements necessary for the construction of the grid of meridians and parallels. These changes are presented on the basis of analysis of 665 atlases, what means all editions of Polish school geographical atlases between 1771 and 2012 identified by the author.
The evolution of the mathematical foundations of maps in Polish school atlases over more than two centuries is an example of assimilation of the newest trends and scientific researches that takes place between science and education.
Will an underwater robot ever replace the diver? A rather poor progress or a great success?
Authors: Olejnik Adam , Siermontowski Piotr 
Published: May 2018

Abstract
The article deals with the subject matter related to the development of underwater works technologies. Nearly 15 years ago one of the authors of this study published a material in the monthly magazine of “Podwodny Świat” (The Underwater World) entitled “The Future of Underwater Technologies – the diver or the robot?” where he noted that the time of great changes in technologies aimed at researching the depths and conducting works under water has arrived. This new era mainly consists in the fact that on an increasing number of occasions the diver is replaced by an underwater robot. The presented material constitutes an attempt to provide an answer to the question whether the then posed thesis is still valid. In the article the authors discuss issues concerned with the development of techniques and technologies applied in the conquest of depths that leads them to the conclusion that the previously observed tendency of a double-tracked development of underwater technologies is gaining in strength, which causes that the works and exploration of bodies of water at great depths will be possible only with the use of unmanned techniques.
Activities of the elderly and their satisfaction with life
Authors: Skałacka Katarzyna , Derbis Romuald 
Published: May 2018

Abstract
Successful aging (Rowe & Kahn, 1997) is conditioned by aspiration to be active and by the ability to maintain social relations. Activity improves the emotional lives of seniors and is associated with a reduction of some symptoms of aging. Our study verifies if the number of activities (informal and solitary) is associated with quality of life and whether subjective age may be a mediator of this relationship. The 136 seniors above 60 were tested by our authorial scale of activity and the WHOQOL-BRIEF. The results showed that older persons’ higher quality of life levels are related not only to the number of activities undertaken, but also to the frequency that these activities are engaged in. The mediating role of subjective age in relation to one’s activities and quality of life was also indicated, which, concerning general quality of life, turned out to be a cooperative suppression.
Soybean Seed Germination And Seedling Growth In Response To Deterioration And Priming: Effect Of Seed Size
Authors: Moshtaghi-Khavaran Amir , Khomari Saeid , Zare Naser 
Published: May 2018

Abstract
A laboratory experiment was conducted to determine if separation of soybean [Glycine max (L.) Merr.] seeds by size might be effective in germinability of aged and primed seeds and subsequent seedling vigour. A known soybean seed lot was separated into four size classes using round-hole screens. The seed lots were deteriorated by rapid aging and invigorated by hydro- and halo-priming. These pre-treated seeds were planted in rolled paper towels and the results were evaluated according to ISTA rules. The small soybean seeds had higher speed of germination than the other size classes. The seedlings produced from large and medium seeds were longer and heavier than those from other size classes. Our results indicated that the large seeds had less sensitivity to short-term aging condition owing to the number of normal seedlings, while the deterioration more increased the germination time of large and medium seeds, compared to small ones. The alleviatory effects of halo-priming on deterioration of seeds are greater compared with hydro-priming. Although there are some debates, the present data further indicate that larger soybean seeds are susceptible to aging condition.
Genetic Diversity of White Clover (Trifolium Repens L.) from the Urban Area of Rīga Baltā Āboliņa (Trifolium Repens L.) Ģenētiskā Daudzveidība Rīgas Pilsētvidē
Authors: Grauda Dace , Avotiņš Kalvis , Fokina Oksana , Kolodinska-Brantestam Agnese , Rashal Isaak 
Published: May 2018

Abstract
White clover (Trifolium repens L.) is well represented in the urban environment and wide areas. The goal of this study was to compare the genetic features and to determine the genetic distances and similarities between some populations of white clover using iPBS (inter primer binding sites) technique in a retrotransposon-based method in samples from ecologically different areas in Latvia. Comparisons were made between three plant groups: urban environment (different areas in Rīga), Latvian countryside territory (four different localities), and the commercial variety ‘Daile’. The Shannon diversity index was not high (0.2974 for Rīga, 0.3079 in countryside territories, and 0.3367 for the variety ‘Daile’), but the polymorphic bands present in all evaluated plant sets were higher than 89%. Using principal coordinates analysis the white clover formed three clusters. One cluster included plants from the variety ‘Daile’. The plants from Rīga urban area and different sites of Latvia formed two clusters.
Bird number dynamics during the post-breeding period at the Tömörd Bird Ringing Station, western Hungary
Authors: Gyurácz József , Bánhidi Péter , Góczán József , Illés Péter , Kalmár Sándor , Koszorús Péter , Lukács Zoltán , Németh Csaba , Varga László 
Published: May 2018

Abstract
The fieldwork, i.e. catching and ringing birds using mist-nets, was conducted at Tömörd Bird Ringing Station in western Hungary during the post-breeding migration seasons in 1998-2016. Altogether, 106,480 individuals of 133 species were ringed at the station. The aim of this paper was to publish basic information on passerine migration at this site. Migration phenology was described through annual and daily capture frequencies. Furthermore, we provide the median date of the passage, the date of the earliest or latest capture, the peak migration season within the study period, and the countries where the birds monitored at the site were ringed or recovered abroad. To compare the catching dynamics for the fifty species with total captures greater than 200, a reference period was defined: from 5 Aug. to 5 Nov. 2001-2016. Some non-passerines that are more easily caught with mist-nets or that are caught occasionally were listed as well. The two superdominant species, the European Robin and the Eurasian Blackcap, with 14,377 and 13,926 total captures, made up 27% of all ringed individuals. Among the fifty species analysed, there were ten species with a decreasing trend, five species with an increasing trend and thirty-five species with a stable (or uncertain) trend in their numbers from 2001 to 2016. The temporal pattern of migration of long-distance migrants was different from that of the medium- and short-distance migratory species.
Postgraduate Professional Pedagogical Education In Mexico
Authors: Zhyzhko Olena 
Published: May 2018

Abstract
This article is the result of scientific comparative-pedagogical research, which purpose was to highlight the main features of postgraduate professional pedagogical education in Mexico. The author found that the postgraduate professional pedagogical education in Mexico is performed by public and private higher education institutions: higher pedagogical schools, universities, autonomous universities, tecnological universities, technological institutes, research institutions, institutions of postgraduate education. Despite common goals, public and private institutions performed the posgraduate profesional pedagogical education on various organizational and procedural schemes. The main characteristics of postgraduate professional pedagogical education in Mexico are a relatively recent launch of the first programs (70-ies of the twentieth century); the rapid development of postgraduate professional pedagogical education in the 80-ies - 90-ies years of the XX century; the relative uniformity of its distribution between the state (61.1 %) and private (39.9 %) universities; careful surveillance of public higher pedagogical education quality through periodic programs’s evaluation; various thematic orientation of the programs; low rates of the ultimate effectiveness (the number of graduates, who received a diploma).
Origins and Formation of Corporate Education in the USA
Authors: Lytovchenko Iryna 
Published: May 2018

Abstract
The article analyzes the process of formation and development of corporate education in the USA in the first half of the twentieth century. It has been determined that the main prerequisites for the development of corporate education in the USA in the first half of the twentieth century were historical, socio-economic, political factors and advances in scientific research including: the rapid growth of the US economy in the twentieth century; dissemination of scientific and technological progress and constant introduction of new technologies in the workplace; a national policy of “welfarism”; scientific works of R. Kelly “Training industrial workers” and D. Morris “Employee training: A study of education and training departments in various corporations”, which contained the first complex researches on training in industry, substantiated the necessity and prospects of this study, analyzed corporate programs of that time, the ideas on scientific management of F. Taylor, F. Gilbreth and S. Thompson, which had a major impact on all business areas. It has been found out that corporate education was the result of evolution of apprenticeship, the oldest and most traditional form of vocational training in the United States. By 1920s a new concept of modern education had been formed in the workplace which had its philosophical foundations, educational programs, technologies, system of providing services and organizational structure. In the period between the First and Second World Wars a new vision of learning at the workplace arose, new teaching methods were developed different from those used in traditional educational institutions; understanding came that the dissemination of knowledge within the whole community would contribute to building a democratic society.
The correlation of dawn phenomenon with glycemic variability parameters in type 2 diabetes mellitus
Authors: Roman Gabriela , Bala Cornelia , Craciun Cristian Ioan , Rusu Adriana , Craciun Anca Elena 
Published: May 2018

Abstract
Introduction. Dawn phenomenon could have deleterious effect on overall glycemic control. Glycemic variability may be an independent risk factor for the development of diabetes chronic complications. The study aimed to evaluate any correlations between the dawn phenomenon and parameters of glycemic variability in a cohort of type 2 diabetes patients (T2DM). Material and methods. This retrospective observational study included 131 T2DM patients. Continuous glucose monitoring (CGM) has been performed. Data from the first 24h of full recording were used for analysis of glycemic variability indices: mean level of 24h interstitial glucose value and standard deviation; % coefficient of variation; J index; mean amplitude of glycemic excursion - MAGE; continuous overall net glycemic action (CONGA) at 1, 2, 4 and 6 hours; mean of daily differences (MODD) index. Results. Mean age was 56.04 ± 9.91 years, 35.9% women, 17.6% on diet, 53.4% on oral therapy and 29% on insulin. Dawn phenomenon was more frequent in patients below 60 years (70%) and in oral therapy group (72.85%). Significant correlations between the dawn phenomenon and j-index, MAGE, CONGA-4 and CONGA-6 have been found in T2DM patients on diet therapy alone. The amplitude of dawn phenomenon was 46.10 ± 24.40 mg/dl and significantly correlated (p<0.05) after adjustment for age, gender and treatment with % CV, MAGE, CONGA-1, CONGA-2, CONGA-4, CONGA-6 and MODD. Conclusions. The dawn phenomenon significantly increases the glycemic variability parameters in drug-naive T2DM patients, with no impact in T2DM on oral or insulin therapy.
Influence of fly-ashes on properties of ordinary concretes
Authors: Rutkowska Gabriela , Wiśniewski Krzysztof , Chalecki Marek , Górecka Mirosława , Miłosek Kamil 
Published: May 2018

Abstract
Influence of fly-ashes on properties of ordinary concretes. Care of the environment in accordance with the principles of sustainable development introduces the possibility and need for waste recycling. The construction and building materials industry has the greatest potential for reuse of waste. The article presents the results of investigations of selected properties (consistency, water absorbability, compressive strength and tensile strength after 28 and 56 days of curing, depth of penetration) of ordinary concretes and concretes containing fly-ashes - calcareous and siliceous ash − in their composition. To make the samples, the Portland cement CEM I 42.5 R and natural aggregate with graining of 0-16 mm were used. The concrete with siliceous and calcareous admixtures was made in three lots where the ash was added in the quantity of 15, 20 and 30% of the cement mass. After the tests, it was stated that the fly-ash admixture does not increase the air content in the mix, it increases the compressive strength in time and the siliceous ash improves the splitting tensile strength.
Bone Quality Assessment of Dental Implant Recipient Sites
Authors: Vasovic Miroslav , Jovanovic Lena , Djordjevic Aleksandrija 
Published: May 2018

Abstract
The term bone quality is not clearly defined and depends on many factors, such as bone density, bone vascularity, bone metabolism and other factors that may affect implant outcome. The assessment of bone volume and bone density is most common in planning the treatment of dental implants. Bone quality is an important predictor of primary implant stability, which influences the future implant osseointegration. Numerous classifications have been described for the evaluation of bone density. The most commonly used has been the one proposed by Lekholmu and Zarb. For the objective evaluation of bone density, conventional computed tomography (CT) or Cone Beam Computed tomography (CBCT), have been proposed. Both methods are reliable for the measurement of bone density, but preference is given to CBCT, due to the lower radiation doses, greater comfort for the patient and the lower prices. Pre-operatively defined bone density is a good indicator of the future success of implant therapy. In addition to the bone density, vascularity of the jawbone is an important factor of the quality of the bone for the osseointegration of dental implants. Laser Doppler is a simple method that can determine the vascularity of bone during implant insertion. The development of modern diagnostic methods for assessing the quantity and quality of the jawbone has enabled easier implant planning and has provided a secure outcome.
Disturbances Of The Holocene Lake-Bog Sediment Succession As Revealed By Pollen Record From Wietrzychowice (Southeastern Kujawy, Central Poland)
Authors: Břízová Eva , Roman Małgorzata 
Published: May 2018

AbstractResults of geological and pollen investigations of the lake-bog sediments from the section Wietrzychowice W5, located nearby the Neolithic Funnel Beaker Culture (FBC) megaliths, are presented. The pollen data reveal that sedimentation at Wietrzychowice has begun at the beginning of the Holocene (Preboreal). Pollen analysis was used to determine stratigraphy with regard to sediment characteristics. The pollen spectrum was divided into 8 LPAZes (1-7Xa, 7Xb) which were also, where possible, stratigraphically classified. Radiocarbon dating of 6 730 ± 90 BP (5 730–5 480 BC, MKL-702) at depth of 1.20 m confirmed the pollen analysis age estimation. Five settlement episodes were found in organic sediments in the upper part of the W5 core. The first was presumably during the Preboreal, the second in the early Atlantic, the third in the late Atlantic (probably Neolithic FBC), the fourth in the early Middle Ages and the last one in the late Middle Ages. The pollen analysis was useful to point irregularities in sediment succession. Such a situation made palaeoenvironmental interpretation difficult, but further research is still needed to enable an accurate reconstruction.
Physical and water properties of selected Polish heavy soils of various origins
Authors: Kaczmarek Zbigniew , Gajewski Piotr , Mocek Andrzej , Owczarzak Wojciech , Glina Bartłomiej 
Published: May 2018

Abstract
The paper presents the characteristics of selected physical, chemical, and water properties of four mineral arable soils characterized with heavy and very heavy texture. Soil samples from genetic horizons of black earths from areas near Kętrzyn, Gniew and Kujawy, and alluvial soils from Żuławy were used. The following properties were determined in the samples of undisturbed and disturbed structure: texture, particle density, bulk density, porosity, natural and hygroscopic moistures, maximal hygroscopic capacity, saturated hydraulic conductivity, potential of water bonding in soil, total and readily available water, total retention in the horizon of 0–50 cm, drainage porosity, content of organic carbon and total nitrogen Parent rocks of these soils were clays, silts and loams of various origin. High content of clay fraction strongly influenced the values of all the analyzed properties. All the examined soils had high content of organic carbon and total nitrogen and reaction close to neutral or alkaline. High content of mineral and organic colloids and, what follows, beneficial state of top horizons’ structure, determined – apart from heavy texture – low soil bulk density and high porosity. The investigated soils were characterized by high field water capacity and wide scopes of total and readily available water. The saturated hydraulic conductivity was low and characteristic to heavy mineral arable soils. The parameter which influenced the variability of analyzed parameters most was texture.
Temporal water table changes in soil toposequence of the Poznań Lakeland (western Poland)
Authors: Kozłowski Michał , Komisarek Jolanta 
Published: May 2018

Abstract
The paper presents results of determination of temporal changes in water table depths in the toposequence of Retisols/Luvisols and Phaeozems/Gleysols. Assessment of temporal trends in the water table depth was made with the use of the linear regression analysis. The results obtained indicate that the mean water table depth and mean high and low water table depths were deeper in the soil at the upper part of the slope in comparison with soil located at the footslope. A higher amplitude of water table was observed in Retisols than in Gleysols but the highest variability of water table level was noted in the soils at the footslope compared to those at the slope summit. In Retisols, with each month of observation from 1993 to 2012, the water table showed a tendency to increase. These trends were the highest from January to April, which may be related to the tendency of increasing monthly sums of precipitation in December, January and February. In the Gleysol at the footslope, in the period 1993–2012 and in the vegetation season, the water table depth showed a tendency to decrease. This trend may be due to the impact of water table on the soil water content at the root zone, which is used in the process of evapotranspiration.
Professional Activities of the European Taekwondo Coach: A Comparative Analysis
Authors: Bujak Zbigniew , Gierczuk Dariusz , Orbach Iris , Blumenstein Boris 
Published: May 2018

AbstractThe purpose of this manuscript is to establish and compare the basic professional activities that are important for successful performance of taekwondo coaches from Poland and several other European countries. Fifty-nine high level taekwondo coaches were divided into two groups: Group A included 31 European coaches from seven countries and Group B included 28 Polish coaches. Participants were asked to respond by e-mail to a questionnaire that included a list of 20 basic coaches’ professional activities. Results revealed that managing physical and technical preparation and planning the process of preparing competitiors are important for suceess in taekwondo for both groups. Moreover, differences in professional coach’s activities are discussed.