bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of the Applicability of Statistical Methods in Studies on Price Dynamics on the Real Estate Market
Authors: Kokot Sebastian , Bas Marcin 
Published: May 2013

Abstract
The specific character of the real estate market is the reason why observations of transaction prices seen as statistical variables are taken in a non-standard way. In the traditional approach each time period or specific moments of time are attributed with one observation of a studied variable per one object. In the case of the real estate market, this is not possible since transactions relate to different objects, i.e., properties, and occur at irregular, or even random, moments. This is why traditional methods used to examine the dynamics of economic phenomena must be adapted to specific conditions on the real estate market. Keeping that in mind, the aim of this paper is to adapt classical statistical examination methods of dynamics to specific conditions of the real estate market followed by the actual examination of the dynamics of real estate prices in three sub-segments of the housing market in Szczecin. On its basis, the authors evaluate various methods of examining real estate price dynamics in terms of their applicability in real estate appraisal procedures and, in a broader perspective, present characteristic phenomena that can be observed on the real estate market.
The Problem of Competition on Real Estate Market on the Example of the Local Housing Market in Olsztyn
Authors: Kuryj-Wysocka Oksana , Wiśniewski Radosław 
Published: May 2013

Abstract
In the economic theory, competition is considered to be a fundamental principle of the free market. Due to the competition, customers get lower prices, better service quality, more and more choices. The competition in the real estate market is a very important factor in its development. Buying or selling real estate is often one of the most important financial transactions, which require the purchaser. With the reference to the above, the participants of the real estate market need to analyse a number of transactions and do a detailed understanding of the market before making a decision and finding a deal that meets all the expectations which will not be diverging significantly from remaining offers functioning in the given area of the market. The phenomenon of competition is very advantageous for buyers of a real estate, because it shows a wide range of various possibilities which one should consider before making a final choice.
Times of crisis trigger a tendency of the growing competition in the property market, what results in a decrease in real estate prices. This article brings up the issue of price and non-price competition on the real estate market and the influence which it exerts on the decision of the purchaser. The aim of this paper is to present the phenomenon of the competition at three levels (levels), by examining what relationship occurs between the entities functioning on the market, what occurs between entities and objects, and how the entities, i.e. individual real estate, compete with each other. This study will be conducted with methods of statistical analysis of the market, however Herfindahl-Hirschman Index will be used to measure competition on the local real estate market.
Integration of Occupational Safety to Contractors` or Subcontractors` Performance Evaluation in Construction Projects
Authors: Kozlovská Mária , Struková Zuzana 
Published: May 2013

Abstract
Several factors should be considered by the owner and general contractor in the process of contractors` and subcontractors` selection and evaluation. The paper reviews the recent models addressed to guide general contractors in subcontractors’ selection process and in evaluation of different contractors during the execution of the project. Moreover the paper suggests the impact of different contractors’ performance to the overall level of occupational health and safety culture at the sites. It deals with the factors influencing the safety performance of contractors during construction and analyses the methods for assessing the safety performance of construction contractors. The results of contractors’ safety performance evaluation could be a useful tool in motivating contractors to achieve better safety outcomes or could have effect on owners` or general contractors’ decision making about contractors suitability for future contracting works.
Multi-Functioning in Virtual Monitoring of Thin-Walled Bridges
Authors: Tesár Alexander 
Published: May 2013

Abstract
Multi-functioning in virtual monitoring of thin-walled bridges is treated in present paper. The approach enables multiple functions in virtual monitoring of bridges made of integrated thin-walled members with their hierarchical configuration. Theoretical, numerical and experimental in situ assessment of the problem is presented. Some results of structural application are submitted.
Evaluation of Facility Management by Multivariate Statistics – Factor Analysis
Authors: Singovszki Miloš , Vranayová Zuzana 
Published: May 2013

Abstract
Facility management is evolving, there is no exact than other sciences, although its development is fast forward. The knowledge and practical skills in facility management is not replaced, on the contrary, they complement each other. The existing low utilization of science in the field of facility management is mainly caused by the management of support activities are many variables and prevailing immediate reaction to the extraordinary situation arising from motives of those who have substantial experience and years of proven experience. Facility management is looking for a system that uses organized knowledge and will form the basis, which grows from a wide range of disciplines. Significant influence on its formation as a scientific discipline is the "structure, which follows strategy". The paper deals evaluate technology building as part of an facility management by multivariate statistic - factor analysis.
State of the Art in the Utilization of Deck Bridges with Encased Filler-Beams in the Standard Construction Practice
Authors: Kvočák Vincent , Kožlejová Viktória , Chupayeva Katerina 
Published: May 2013

Abstract
Deck bridges with encased filler-beams have been used in construction for a long time. Nowadays they are employed mainly in the refurbishment of railways and in road construction. Regarding the method of construction, they can be divided into monolithic/cast-in-place (constructed fully in its final location) or prefabricated/precast structures (built at another location and then transported to their final location for placement in the full structure). Both methods of construction have certain advantages and disadvantages. Decision-making and selecting a better alternative depends on the building conditions and a means of transport (whether a road or railway) running on the bridge.
Interaction Between Salt Stress and Angular Leaf Spot (pseudomonas syringae pv lachrymans) in Cucumber
Authors: Chojak Joanna , Kuźniak Elżbieta , Świercz Urszula , Sekulska-Nalewajko Joanna , Gocławski Jarosław 
Published: May 2013

Summary
We studied the effects of sequentially applied salt stress and Pseudomonas syringae pv lachrymans (Psl) infection in cucumber (Cucumis sativus L.). Infection development, shoot and root growth potential, the concentrations of chlorophyll and proline as well as electrolyte leakage, lipid peroxidation and H2O2 production were determined. Cucumber plants were first exposed to salt stress and irrigated for seven days with 50 or 100 mM NaCl and thereafter inoculated by Psl. Abiotic stress compromised the defence response to pathogen and disease severity was the highest in 100 mM NaCl-treated plants. The reduced performance of salinized plants under biotic stress could be related to salt stressinduced plant growth inhibition with leaf expansion being the most sensitive to salinity, decreased chlorophyll content, increased electrolyte leakage and prolonged H2O2 accumulation in leaves implying perturbations in redox homeostasis. The response of NaCl-treated and control plants to bacterial infection differed in terms of H2O2 generation and lipid peroxidation. This study confirmed that proline is an important component of local and systemic responses to salt stress and infection. The results contribute to our knowledge of the nature of plant response to a combination of abiotic and biotic stresses
Detection of Arbuscular Mycorrhizal Fungi in the Roots of Strawberry Plants Fertilized with Organic Bioproducts
Authors: Lisek Anna , Sas Paszt Lidia , Sumorok Beata 
Published: May 2013

Summary
In organic farming, mineral fertilizers are replaced by various preparations to stimulate plant growth and development. Introduction of new biopreparations into horticultural production requires an assessment of their effects on the growth and yielding of plants. Among the important indicators of the impact on plants of beneficial microorganisms contained in bioproducts is determination of their effectiveness in stimulating the growth and yielding of plants. Moreover, confirmation of the presence of arbuscular mycorrhizal (AM) fungi in the roots and plant growth promoting rhizobacteria (PGPR) in the rhizosphere is also necessary. In addition to conventional methods, molecular biology techniques are increasingly used to allow detection and identification of AM fungi in plant roots. The aim of this study was identification and initial taxonomic classification of AM fungi in the roots of ‘Elkat’ strawberry plants fertilized with various biopreparations using the technique of nested PCR.
Tests were performed on DNA obtained from the roots of ‘Elkat’ strawberry plants: not fertilized, treated with 10 different biopreparations, or fertilized with NPK. Amplification of the large subunit of ribosomal gene (LSU rDNA) was carried out using universal primers, and then, in the nested PCR reaction, primers specific for the fungi of the genera Glomus, Acaulospora, and Scutellospora were used. Colonization of strawberry roots by arbuscular mycorrhizal fungi was determined on the basis of the presence of DNA fragments of a size corresponding to the types of the fungi tested for.
As a result of the analyses, the most reaction products characterizing AM fungi were found in the roots of plants treated with the preparation Florovit Eko. The least fragments characteristic of AM fungi were detected in the roots of plants fertilized with NPK, which confirms the negative impact of mineral fertilizers on the occurrence of mycorrhizal fungi in the roots of strawberry plants. The roots of plants fertilized with Tytanit differed from the control plants by the presence of one of the clusters of fungi of the genus Glomus and by the absence of a cluster of fungi of the genus Scutellospora. In the roots of plants treated with other biopreparations there were reaction products indicating the presence of fungi of the genera Glomus, Scutellospora and Acaulospora, like in the roots of the control plants. The results will be used to assess the suitability of microbiologically enriched biopreparations in horticultural production.
The Role of Cultivars and Sowing Date in Control of Broad Bean Weevil (Bruchus Rufimanus Boh.) in Organic Cultivation
Authors: Szafirowska Anna 
Published: May 2013

Summary
During 2010-2011 the studies were conducted on the cultivation of three broad bean cultivars Windsor Biały, Makler and Bartom with organic and conventional method.
The aim of research was to determine the influence of cultivar and sowing date on the seed damage caused by broad bean weevil and on the total seed yield. Seeds were sown on April 10 and 20th. At the harvest the yield was divided into following grades: marketable, small seeds, damaged by Bruchus rufimanus Boh. and diseased. Plants selected on each plot were examined towards the relation between plant architecture and seed damage. The effect of applied treatments on seed yield and damage was found. The lowest percentage of injured seeds presented cv. Makler irrespectively on sowing date and growing method. The differences were proved statistically. Delay of sowing restricted the percent of damaged seeds but also decreased the yield in both growing methods. Cluster located at upper parts of a plant contained lower amount of damaged seeds.
The Effect of Storage in Controlled Atmosphere on the Quality and Health-Promoting Components of Broccoli (Brassica Oleracea bar. Italica)
Authors: Badełek Ewa , Kosson Ryszard , Adamicki Franciszek 
Published: May 2013

Summary
The aim of the study was to determine the effect of storage conditions on the quality and health-promoting components of broccoli. Broccoli heads cv. Marathon F1 were stored at 0°C for 100 days in controlled atmospheres containing: 1) 15% CO2 - 3% O2, 2) 10% CO2 - 3% O2, 3) 8% CO2 - 1% O2, 4) 5% CO2 - 3% O2. In the control treatment, broccoli heads were stored in normal atmosphere in crates lined with PE film. Before and after storage, chemical analyses were performed for the content of ascorbic acid, total sugars and glucosinolates - sulforaphane and indole-3-carbinol. Additionally, after storage the quality of broccoli heads was assessed visually on a 1-10 point scale, and the percentage of marketable heads was determined. The total content of sulforaphane and indole-3-carbinol in fresh broccoli was lower in comparison with stored broccoli. The sulforaphane content in fresh broccoli was about twice as high as that of indole-3-carbinol. Storage in an atmosphere consisting of 5% CO2 - 3% O2 was more favourable in comparison with the other gas concentrations in terms of glucosinolate content. A decrease in the content of ascorbic acid and total sugars during storage was noted in all the treatments. The highest loss of these components occurred in broccoli stored in an atmosphere consisting of 15% CO2 and 3% O2. Broccoli heads stored in normal atmosphere completely lost their market quality due to decay, but the quality of broccoli kept in CA was satisfactory.
Influence of Storage Conditions on Flavonoids Content and Antioxidant Activity of Selected Shallot (Allium Cepa Var. Ascalonicum Backer) Hybrid Cultivars
Authors: Pudzianowska Marta , Gajewski Marek , Przybył Jarosław L. , Buraczyńska Agnieszka , Gaczkowska Olga , Matuszczak Marta , Dziechciarska Marta 
Published: May 2013

Summary
The aim of this study was to determine changes in the content of flavonoids in fleshy scales of shallot bulbs in relation to different compositions of atmosphere during storage. Also antioxidant activity of the bulbs was determined. Bulbs of shallot cvs. Bonilla F1, Conservor F1 and Matador F1 were stored in two storage seasons at the normal atmosphere (NA) and controlled atmosphere (CA) of the 4 compositions: 5% CO2 + 5% O2, 5% CO2 + 2% O2, 2% CO2 + 5% O2, 2% CO2 + 2% O2. The temperature of storage was 0-1°C and RH 65%. Before and after 7-month storage the bulbs were examined in respect of flavonoids content and antioxidant activity (AA). Flavonoids were identified in methanolic extracts with HPLC, AA was determined with FRAP and DPPH assays. Three flavonoid compounds were identified in the plants extracts. Quercetin 3,4’ di-O-glucoside and quercetin 4’-glucoside (spiraeoside) were present in the highest amounts. CA conditions influenced content of flavonoids in the bulbs. The highest content after storage was observed at gas composition of 5% CO2 + 5% O2. Two major flavonoid compounds, quercetin 3,4’-di-O-glucoside and quercetin 4’-O-glucoside (spiraeoside) showed the increasing tendency, however not all changes were significant. No significant differences were observed between cultivars, but ‘Bonilla’ F1 showed slightly higher flavonoids content than the other ones. Investigated cultivars did not differ in respect of AA, measured both with DPPH and FRAP assay. There was no significant influence of storage conditions on DPPH level, while FRAP level was influenced significantly. Bulbs from 5% CO2 + 2% O2 composition were characterized by the highest FRAP values and the bulbs stored at normal atmosphere - by the lowest.
Effect of temperature on the growth of broccoli (brassica oleracea l. var. italica plenck) cv. fiesta
Authors: Kałużewicz Alina , Krzesiński Włodzimierz , Knaflewski Mikołaj , Lisiecka Jolanta , Spiżewski Tomasz , Frąszczak Barbara 
Published: May 2013

Summary
Three-year studies on the influence of temperature on vegetative growth and growth of broccoli heads (Brassica oleracea var. italica cv. Fiesta) were carried out at the Experimental Station “Marcelin” of Poznań University of Life Sciences in Poland. The relationship between temperature sum day-degree, number and area of leaves as well as head diameter was estimated. Likewise relationship between number and area of leaves and head diameter was established. The correlations were described using linear, curvilinear and segment linear regression. The relationship between temperature sum day-degree and number of leaves was linear, whereas the correlation between temperature and area of leaves and head diameter was curves function. On the basis of segment linear regression it was found that in the period when slow growth of heads was observed (the size of up to about 1.5 cm), the area of leaves increased the fastest. It occurred between the 24th and 27th day after planting. The fastest growth of broccoli heads was noted, when the plant had about 18 leaves and area 4900 cm2. In the period of rapid head growth, the increase of sum temperature of 100 day-degree resulted in head diameter increase by 3.5 cm.
Carotenoids, ergosterol and tocopherols in fresh and preserved herbage and their transfer to bovine milk fat and adipose tissues: A review
Authors: Kalač Pavel 
Published: May 2013

Abstract The requirements of cattle for the fat-soluble vitamins A, D and E, their provitamins and some carotenoids have increased under conditions of intensive husbandry with insufficient provision of fresh forage, their cheapest natural source. Moreover, bovine milk fat and adipose tissues participate in the intake of these micronutrients by humans. Four major carotenoids occurring in forage crops are lutein, all-trans-β-carotene, zeaxanthin and epilutein. Fresh forage is their richest source. Losses are significantly higher in hay as compared with silage, particularly if prepared from unwilted herbage. Maize silage is a poor source of carotenoids as compared with ensiled grasses and legumes. Ergosterol contents in forages increase under environmental conditions favourable for the growing of moulds, particularly at higher humidity and lower temperatures. Credible data on changes of ergosterol during herbage preservation, particularly drying and ensiling, have been lacking. Alpha-tocopherol is the most important among eight related compounds marked as vitamin E. It is vulnerable to oxidation and herbage ensiling is thus a safer preservation method than haymaking. As with carotenoids, maize silage is a poor source of α-tocopherol. Overall, information on factors affecting the content of ergosterol and tocopherols in fresh herbage, on changes during forage preservation and on transfer to bovine fats has been much more limited than data for β-carotene.
Biological control of Aspergillus niger, the cause of Black-rot disease of Allium cepa L. (onion), by Penicillium species
Authors: Khokhar Ibatsam , Haider Muhammad Saleem , Mukhtar Irum , Mushtaq Sobia 
Published: May 2013

Abstract The purpose of the study was to explore the control of the onion black rot pathogen, Aspergillus niger, with Penicillium species as biological control agents. Fourteen Penicillium species were isolated from the rhizosphere of different plants. In dual culture agar plate assays, these isolates showed very high antagonistic effects on the growth of A. niger mycelium. Penicillium roqueforti and P. viridicatum greatly inhibited the growth of A. niger by 66% and 60%, respectively, followed by P. bilaii (57%) and P. olsonii (53%). However, it was also observed that the Penicillium species completely overgrew the A. niger colony. The study revealed that some species of the genus Penicillium possessed a high antagonistic effect on the onion black rot pathogen.
The communist world from dawn till dusk. a political geography perspective
Authors: Solarz Marcin Wojciech 
Published: May 2013

Abstract
The article presents the territorial evolution of the communist world from its beginning up until the present day. It argues that the communist world was created in 1917 and that it has survived the end of the Cold War. It shows various ways of understanding its nature in the past as well as in present times and shows the variability and ambiguity of the communist world, including its territorial dimension, thereby encouraging reflection and discussion.
Spherical Product Surfaces in E4
Authors: Bulca Betül , Arslan Kadri , Bayram Bengü (Kılıç) , Oztürk Günay 
Published: May 2013

Abstract In the present study we calculate the coefficients of the second fundamental form and curvature ellipse of spherical product surfaces in E4. Otsuki rotational surfaces and Ganchev-Milousheva rotational surfaces are the special type of spherical product surfaces in E4. Further, we give necessary and sufficient condition for the origin of NpM to lie on the curvature ellipse of such surfaces. Finally we get the necessary condition for Ganchev-Milousheva rotational surfaces in E4 to become flat or Chen type. We also give some examples of the projections of these surfaces in E3
On a Class of Sets Via Grill : A Decomposition of Continuity
Authors: Mandal Dhananjoy , Mukherjee M. N. 
Published: May 2013

Abstract In the present article, a class of sets, called Ϟ-semiclosed sets, which is a subclass of the class of semi-closed sets of Levine [7], is introduced and studied in a grill topological space (X, τ, Ϟ), where Ϟ is a grill on X. Two types of functions are then introduced which ultimately lead us to achieve a new decomposition of a continuous function
A certain class of quadratures with even Tchebychev weights
Authors: Udovičić Zlatko , Udovičić Mirna 
Published: May 2013

Abstract We are considering the quadrature formulas of “practical type” (with five knots) for approximate computation of integral [xxx] where w(·) denotes (even) Tchebychev weight function. We prove that algebraic degree of exactness of those formulas can not be greater than five. We also determined some admissible nodes and compared proposed formula with some other quadrature formulas.
Noor Iterative Approximation for Solutions to Variational Inclusions with k-Subaccretive Type Mappings in Reflexive Banach Spaces
Authors: Zhang Shuyi , Guo Xinqi , Wang Jun 
Published: May 2013

Abstract In this paper, we introduce and study a new class of nonlinear vari- ational inclusion problems with Lipschitz k-subaccretive type mappings in real reflexive Banach spaces. The existence and uniqueness of such solutions are proved and the convergence and stability of Noor iterative sequences with errors are also discussed. Furthermore, general conver- gence rate estimates are given in our results, which essentially improve and extend the corresponding results in Chang[1, 2], Ding[3], Gu[5, 6, 7], Hassouni andMoudafi[8], Kazmi[9], Noor[11, 12], Siddiqi and Ansari[13], Siddiqi, Ansari and Kazmi[14] and Zeng[16].
Tzitzeica-Type centro-affine invariants in Minkowski spaces
Authors: Bobe Alexandru , Boskoff Wladimir G. , Ciucă Marian G. 
Published: May 2013

Abstract
In this article we introduce three centro-affine invariant functions in Minkowski spaces. Tzitzeica curves and Tzitzeica surfaces may be defined in this new context. Our main results allow us to understand the connections between Tzitzeica curves and surfaces in Minkowski spaces and the original Tzitzeica curves and surfaces from the Euclidian space
First and second cohomology group of a bu ndle
Authors: Manea Adelina 
Published: May 2013

Abstract
Let (E, π, M) be a vector bundle. We define two cohomology groups associated to π using the first and second order jet manifolds of this bundle. We prove that one of them is isomorphic with a Čech cohomology group of the base space. The particular case of trivial bundle is studied