bluuebunny/crossref_metadata_2025_split huggingface dataset:
Die Führungskraft als Coach
Authors: Bartlakowski Katja 
Published: April 2016

Zusammenfassung:
Ob Führungskräfte ihre Mitarbeiter
Aus Gründen der besseren Lesbarkeit wird auf die gleichzeitige Verwendung männlicher und weiblicher Sprachformen verzichtet. Sämtliche Personenbezeichnungen gelten gleichwohl für beiderlei Geschlecht.

coachen können oder sollten, wird kontrovers diskutiert. Viele sprechen sich dagegen aus. Zu groß sei der Rollenkonflikt der Führungskraft. Definiert man jedoch die in der Regel leistungsfördernde Mitarbeiterzufriedenheit als Führungsaufgabe, liegt der Coachinggedanke nicht mehr fern. Denn systemisches Coaching ist ein Ansatz zur Arbeit an und in Beziehungen. Und stimmt die Beziehungsebene in der Organisation, stellt sich zumeist auch Zufriedenheit ein.
Engineering of small diameter tubular compacted fibrin matrices
Authors: Aper Thomas , Wilhelmi Mathias , Hoeffler Klaus , Benecke Nils , Haverich Axel 
Published: April 2016

Abstract
Fibrin is widely used in different approaches of tissue engineering. Nevertheless, poor biomechanical strength restricts its use namely in cardiovascular tissue engineering. We have recently developed a novel moulding technique for the generation of highly stable fibrin tubes. The purpose of this study was the application of this method to the generation of small calibre fibrin tubes for the generation of bioartificial vascular grafts with a diameter of 3 mm. Therefore, a fibrinogen preparation was separated from plasma by means of cryoprecipitation and applied to a high-speed rotating casting mould in a low concentration to achieve slow polymerization and thereby uniform distribution of the fibrinogen. Thus, uniformly moulded 10 cm long fibrin tubes with a diameter of 3 mm were generated from 145±22 mg fibrinogen precipitated from 50 mL plasma. Thickness of the wall (522±57 μm) and biomechanical strength (47.4±11.1 kPa) were equable over the whole length of the tubes. Burst strength was 367±49 mm Hg. Thus, the developed technique enables the generation of tubular fibrin segments with a high biomechanical stability and represents a powerful tool for the generation of custom-made bioartificial vascular grafts.
A Comprehensive Survey and Analysis on Access Control Schemes in Cloud Environment
Authors: Shynu P. G. , Singh K. John 
Published: April 2016

Abstract
Cloud computing has emerged as the most dominant computational paradigm in recent times. There are tremendous benefits for enterprises adopting cloud technologies. It provides resources and services on demand, pay-as-you go basis. This includes infrastructure, platform and software services. But there are still a number of security threats and challenges associated with utilizing cloud computing. A proper access control is the fundamental security requirement in any cloud environment, to avoid unauthorized access to the cloud systems. As cloud computing supports multi-tenancy and has a various categories of users with different sets of security requirements, traditional access control models and policies cannot be used. This paper discusses on various access control models used for cloud environment and presents a detailed requirement analysis for developing an access control, specifically for the cloud. A comprehensive study on various security problems associated with outsourced data on the cloud and their existing solutions are also described, with the future research directions.
Mitigating Hot Spot Problems in Wireless Sensor Networks Using Tier-Based Quantification Algorithm
Authors: Balamurali R. , Kathiravan K. 
Published: April 2016

Abstract
One of the key issues in Wireless Sensor Networks (WSN) is the hot-spot problem i.e. the nodes closer to the sink tend to drain their energy at a faster rate when compared to other nodes as they have to perform more communication and hence the sensor network may get isolated. In this paper we are using an integrated MAC and routing protocol which divides the network into tiers. We also propose a quantification algorithm, which decides the number of nodes in each tier to mitigate the hot-spot problem.
Strategy for Individuals Distribution by Incident Nodes Participation in Star Topology of Distributed Evolutionary Algorithms
Authors: Balabanov Todor , Zankinski Iliyan , Barova Maria 
Published: April 2016

Abstract
One of the strongest advantages of Distributed Evolutionary Algorithms (DEAs) is that they can be implemented in distributed environment of heterogeneous computing nodes. Usually such computing nodes differ in hardware and operating systems. Distributed systems are limited by network latency. Some Evolutionary Algorithms (EAs) are quite suitable for distributed computing implementation, because of their high level of parallelism and relatively less intensive network communication demands. One of the most widely used topologies for distributed computing is the star topology. In a star topology there is a central node with global EA population and many remote computation nodes which are working on a local population (usually sub-population of the global population). This model of distributed computing is also known as island model. What is common for DEAs is an operation called migration that transfers some individuals between local populations. In this paper, the term 'distribution' will be used instead of the term 'migration', because it is more accurate for the model proposed. This research proposes a strategy for distribution of EAs individuals in star topology based on incident node participation (INP). Solving the Rubik's cube by a Genetic Algorithm (GA) will be used as a benchmark. It is a combinatorial problem and experiments are done with a C++ program which uses OpenMPI.
Mapping of Acoustic Noise and Microwave Radiation
Authors: Kudriashov Volodymyr V. , Garbar Artem Yu. , Lukin Sergii K. , Palamarchuk Volodymyr P. , Lukin Konstantin A. 
Published: April 2016

Abstract
Passive sensor systems are attractive for monitoring due to the absence of probing emissions. Two passive systems: an acoustic camera, manufactured by Brüel & Kjær (Sound and Vibration Measurement A/S) and a microwave radiometer are considered in the paper. The performance of these systems is carefully analyzed. The obtained results show the limitations of the acoustic camera in acoustic noise source localization caused by specific side lobes of a pattern of its microphone array. A suggestion how to avoid them is given. Application of microwave bistatic radiometer provides information about thermal electromagnetic radiation of objects in 3D spatial coordinates. The generated radiometric maps contain amplitude and phase information, which is suitable for estimation of displacements/vibration. The received results are applicable in nondestructive testing.
Analyte stability during the total testing process: studies of vitamins A, D and E by LC-MS/MS
Authors: Albahrani Ali A. , Rotarou Victor , Roche Peter J. , Greaves Ronda F. 
Published: April 2016

Abstract

Background:
There are limited evidence based studies demonstrating the stability of fat-soluble vitamins (FSV) measured in blood. This study aimed to examine the effects of light, temperature and time on vitamins A, D and E throughout the total testing process.

Methods:
Four experiments were conducted. Three investigated the sample matrix, of whole blood, serum and the extracted sample, against the variables of temperature and light; and the fourth experiment investigated the sample during the extraction process against the variable of light. All samples were analysed via our simultaneous FSV method using liquid chromatography-tandem mass spectrometry technology. The allowable clinical percentage change was calculated based on biological variation and desirable method imprecision for each analyte. The total change limit was ±7.3% for 25-OH-vitamin D3, ±11.8% for retinol and ±10.8% for α-tocopherol.

Results:
Vitamins D and E were stable in the investigated conditions (concentration changes <4%) in the pre-analytical and analytical stages. Vitamin A showed photosensitivity in times >48 h with concentration changes of −6.8% (blood) and −6.5% (serum), both are within the allowable clinical percentage change. By contrast, the extracted retinol sample demonstrated a concentration change of −18.4% after 48 h of light exposure. However, vitamin A in the serum and extracted solution was stable for one month when stored at −20°C.

Conclusions:
Blood samples for vitamins D and E analyses can be processed in normal laboratory conditions of lighting and temperature. The required conditions for vitamin A analysis are similar when performed within 48 h. For longer-term storage, serum and vitamin A extracts should be stored at −20°C.
Comparison of three analytical platforms for quantification of the neurofilament light chain in blood samples: ELISA, electrochemiluminescence immunoassay and Simoa
Authors: Kuhle Jens , Barro Christian , Andreasson Ulf , Derfuss Tobias , Lindberg Raija , Sandelius Åsa , Liman Victor , Norgren Niklas , Blennow Kaj , Zetterberg Henrik 
Published: April 2016

Abstract

Background:
Neuronal damage is the morphological substrate of persisting neurological disability. Neurofilaments (Nf) are specific cytoskeletal proteins of neurons and their quantification has shown encouraging results as a biomarker for axonal injury.

Methods:
We aimed at comparing a widely used conventional ELISA for Nf light chain (NfL) with an electrochemiluminescence-based method (ECL assay) and a newly developed single-molecule array (Simoa) method in clinically relevant cerebrospinal fluid (CSF) and serum samples.

Results:
Analytical sensitivity was 0.62 pg/mL for Simoa, 15.6 pg/mL for the ECL assay, and 78.0 pg/mL for the ELISA. Correlations between paired CSF and serum samples were strongest for Simoa (r=0.88, p<0.001) and the ECL assay (r=0.78, p<0.001) and weaker for ELISA measurements (r=0.38, p=0.030). CSF NfL measurements between the platforms were highly correlated (r=1.0, p<0.001). Serum NfL levels were highly related between ECL assay and Simoa (r=0.86, p<0.001), and this was less visible between ELISA-ECL assay (r=0.41, p=0.018) and ELISA-Simoa (r=0.43, p=0.013). Multiple sclerosis (MS) patients had significantly higher serum NfL levels than controls when measured with Simoa (p=0.001) but not with the other platforms.

Conclusions:
We found Simoa to be more sensitive than ELISA or the ECL assay. Our results support the feasibility of quantifying NfL in serum; the results correlate with the more-established CSF NfL test. The highly sensitive Simoa technology deserves further studies in larger patient cohorts to clarify whether serum NfL could be used in the future to measure disease severity and determine prognosis or response to treatment interventions in neurological diseases.
“Nativeness” and Intelligibility: Impacts of Intercultural Experience Through English as a Lingua Franca on Chinese Speakers’ Language Attitudes
Authors: Wang Ying , Jenkins Jennifer 
Published: April 2016

AbstractThis paper investigates the impacts of intercultural experience through English as a lingua franca (ELF) on language attitudes, with the focus on Chinese Speakers’ narratives of ELF experience in relation to their views of Englishes. The data retrieved through 769 questionnaires and 35 interviews with Chinese users of English revealed the impacts in four aspects. First, the lack of ELF experience helps to maintain the assumption that conformity to native English is necessary for interactants to understand each other. Second, ELF experience triggers the question about the exclusive connection between nativeness and intelligibility. Third, it raises challenges to the exclusive relevance of native English for successful intercultural communication. Fourth, it helps to develop an awareness of intercultural communication strategies as important for communicative effectiveness in the context of the diversity of English. Attitudes revealed in the four aspects all point to a concern with the issue what is intelligible English. This paper thus discusses intelligibility in relation to (non-) nativeness and the role of intercultural experience in making sense of the issue of intelligibility, which leads to the exploration of pedagogical implications of this study.
Qualification Requirements for Foreign Suppliers in Public Procurement – Evidence from the Czech Republic
Authors: Vyklický Martin , Man Petr , Heidu Rudolf Franz , Jurčík Radek 
Published: April 2016

Abstract
Qualification requirements for foreign suppliers in Public Procurement (PP) are quite different in each European Union (EU) member state. The most complex requirements for foreign suppliers in the context of public purchases are included in the Czech PP law. The aim of this paper is to make an overview of the problem of qualification requirements for foreign suppliers in the PP law of the CR. Its sub-objectives are the identification and explanation of solutions to the problem in the PP legislation of neighboring countries of the CR that are also members of the EU. The methodological part of the contribution is based mainly on the analysis and critical evaluation of the current state of legal issues relating to the proof of qualification of foreign suppliers in PP orders of the CR; with examples of fairly extensive decision-making practices of the Office for the Protection of Competition and law courts, including the jurisprudence of the European Court of Justice. The paper highlights the unnecessary complexity of qualification requirements that, on purely formal grounds, inhibits submissions of tenders from potential foreign suppliers that would otherwise be able to submit a bid for a public contract without any problems whatsoever. The authors are using and applying a comparative-legal method in the context of the comparison of the PP legislation of neighboring countries of the CR that are also members of the EU. The case study of foreign suppliers bidding for above-threshold public tenders in the CR at the minimum legal requirements of the contracting authority (CA) for proof of qualification, the comparation study with selected EU countries or analysis of the development of the proportion of public contracts awarded to foreign suppliers in 2010–2014 shows that there is legislation uncertainty in EU PP law that should be reduced and simplified on an EC basis.
Steam gasification of oat with conversion of tars on clay catalyst and gas cleaning by condensation of steam
Authors: Zabłocka-Malicka Monika , Szczepaniak Włodzimierz , Zielińska Amelia , Rutkowski Piotr 
Published: April 2016

Abstract
Gasification of oat grains with steam at normal pressure has been performed in a laboratory scale. Experiments were carried out in a vertical quartz reactor, with a steady flow of the steam and immediate tars conversion at 900ºC on the catalytic bed prepared from local clay with simple additives. Condensation of steam excess enabled essential elimination of non-volatile components of the gas stream. Condensates were analyzed with GC-MS. The highest level of organic compounds was detected in experiment with non-catalytic bed of small quartz pieces (90.2 mg/15 g of oat grains) and successful decreased by 86% for original clay without additives (precursors), 94% for clay with magnesium precursor, 97% with iron and more than 99% with calcium one.
Glebokie Lake in Szczecin after hydrotechnical regulations
Authors: Miller Tymoteusz , Svobodova Zdenka , Meller Edward , Poleszczuk Gorzysław 
Published: April 2016

Abstract
Water quality of the Glebokie Lake in Szczecin (NW-Poland) was studied in years 2012-2014. Glebokie Lake is a reservoir with a negative water balance related to the location draining groundwater drinking water intake for Szczecin agglomeration. In 2004 hydrotechnical regulations were conducted aimed at maintaining a constant amount of water in the lake, which involved a temporary feeding Glebokie Lake with Gunica River waters. In order to determine the hydrochemical status of the Lake waters and the factors shaping water quality - 19 water quality indices within 25 months were measured: temperature, pH and water oxygen status, nutrients (N, P) and ionic macrocomponents and Fetot. Trophic status of the lake waters using the Carlson criteria was defined. On the basis of chemometric analysis of measurement data (CA, PCA/FA and DA) we established that statistically significant factors affecting water quality in the study period were: seasonal (the climatic seasons) changes in the biological processes activity, periodical (in April and November) waters inflows from the Gunica River, anthropopressure in during swimming season and the coagulant (FeSO4) presence in the ecosystem. The possibility of applying the chemometric techniques to interpret measurement data in the lake type like Glebokie Lake with a small amount of data has been shown.
Slovenes in Italy: A Fragmented Minority
Authors: Steinicke Ernst , Jelen Igor , Lieb Gerhard Karl , Löffler Roland , Čede Peter 
Published: April 2016

Abstract
The study examines the Slovenian-speaking minority in the northern Italian autonomous region of Friuli-Venezia Giulia. It explores the spatial fragmentation in the Slovenian settlement area in Italy and analyzes the socio-economic and demographic processes that exert influence on the minority. The work is based on the critical evaluation of the current status of research, of statistical data from the state censuses and results of own research on site. The Slovenian-language population in the entire region is currently estimated at about 46,000 people. The main settlement area is the eastern border region of Friuli-Venezia Giulia, which is characterized by different cultural and regional identities. While the Slovenian-speaking population of Friuli focuses more on its cultural and regional distinctions, the majority of the Slovenian-language group in Venezia Giulia considers itself a “national minority.”
Serpentinite in the Śnieżnik Massif: petrology and ecological impact
Authors: Pędziwiatr Artur 
Published: April 2016

Abstract
The paper presents a locality related to the occurrence of serpentinite body from the
western slope of Żmijowiec in the Śnieżnik Massif. On the basis of field observations
and numerous literature references, I provide a detailed geological description of this
site and discuss the origin and tectonic settings of the serpentinite body. Apart from
compelling geology, these rocks are site for ladder spleenwort, a rare species protected
in Poland as well as in the European Union.
The Mofetta Tylicz – an example of carbonated water springs in the
area of Tylicz (Beskid Sądecki, the Carpathians)
Authors: Modelska Magdalena , Buczyński Sebastian , Błachowicz Marek , Heidemann Monika , Grzęda Olga , Karkoszka Łukasz 
Published: April 2016

Abstract
The paper characterise the group of CO2-rich (carbonated) water springs in the Carpathians,
which are accompanied by exhalation of CO2. These springs called the Mofetta
Tylicz are the example of the environmental and touristic unique object. We present
geological and hydrogeological background as well as chemical analysis of the springs
composition. The springs are characterised by the variability of the chemical composition
of analysed groundwater, which indicates the need to implement a systematic
monitoring. The monitoring would assess the reasons for this variability and allow the
effective protection of spring waters of this area in the future.
Synthesis and mechanical behaviour of green metal matrix composites using waste eggshells as reinforcement material
Authors: Dwivedi Shashi Prakash , Sharma Satpal , Mishra Raghvendra Kumar 
Published: April 2016

Abstract
Chicken eggshell (ES) is an aviculture by-product that has been listed worldwide as one of the worst environmental problems. The effective utilisation of ES biowaste is strongly encouraged in our society due to environmental and economic reasons. The aluminium alloy (AA) 2014/5 wt% carbonised ES metal matrix composite used in this study was fabricated by electromagnetic stir casting technique at parameters of 12 A (current), 180 s (time) and 700°C (matrix pouring temperature), respectively, and immediately extruded on universal testing machine at 60 MPa using cylindrical H13 tool steel die coated with graphite to avoid upper flow of ES particles and to improve wettability of carbonised ES with AA2014 alloy. Microstructures of composites show uniform distribution of carbonised ES particles. Density and overall cost of the metal matrix composite decreases 3.57% and 5%, respectively, when carbonised ES particulate is added 5% by weight. Tensile strength, hardness, toughness and fatigue strength of AA2014/5 wt% carbonized eggshell composite were also measured. Results show an improvement in these mechanical properties with addition of ES in the matrix alloy.
Genetic Diversity and Core Collection Constitution for Subsequent Creation of New Sunflower Varieties in Tunisia
Authors: Sahari Khoufi , Nicolas Pouilly , Stéphane Muños , Aurélie Bérard , Fayçal Ben Jeddi , Patrick Vincourt , Dominique Brunel 
Published: April 2016

AbstractSunflower (Helianthus annuus L.) is used as “seed snacks”, so called “pipas”, in the Mediterranean countries which may offer an interesting opportunity for agricultural diversification of this crop. The morpho-phenological variability already demonstrated in the Tunisian local populations can be a basis for the creation of new varieties well adapted to climate and soil conditions in that region. The molecular characterization of 59 accessions and reference lines generated 194 alleles from 30 SSR loci (3–10 alleles per locus) and 54 haplotypes, built from 117 SNP detected by NGS sequencing of 7 genes (4–16 haplotypes per gene). These data highlight some uniqueness of the Tunisian material compared to 7 control lines but a low genetic dispersion between accessions. However, a core collection of 8 populations, capturing 88 % of the Tunisian genetic diversity, could be proposed for a future sunflower breeding program.
Probing catalytic rate enhancement during intramembrane proteolysis
Authors: Arutyunova Elena , Smithers Cameron C. , Corradi Valentina , Espiritu Adam C. , Young Howard S. , Tieleman D. Peter , Lemieux M. Joanne 
Published: April 2016

Abstract
Rhomboids are ubiquitous intramembrane serine proteases involved in various signaling pathways. While the high-resolution structures of the Escherichia coli rhomboid GlpG with various inhibitors revealed an active site comprised of a serine-histidine dyad and an extensive oxyanion hole, the molecular details of rhomboid catalysis were unclear because substrates are unknown for most of the family members. Here we used the only known physiological pair of AarA rhomboid with its psTatA substrate to decipher the contribution of catalytically important residues to the reaction rate enhancement. An MD-refined homology model of AarA was used to identify residues important for catalysis. We demonstrated that the AarA active site geometry is strict and intolerant to alterations. We probed the roles of H83 and N87 oxyanion hole residues and determined that substitution of H83 either abolished AarA activity or reduced the transition state stabilization energy (ΔΔG‡) by 3.1 kcal/mol; substitution of N87 decreased ΔΔG‡ by 1.6–3.9 kcal/mol. Substitution M154, a residue conserved in most rhomboids that stabilizes the catalytic general base, to tyrosine, provided insight into the mechanism of nucleophile generation for the catalytic dyad. This study provides a quantitative evaluation of the role of several residues important for hydrolytic efficiency and oxyanion stabilization during intramembrane proteolysis.