bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Multistage Agglomerative Approach for Defining Functional Regions of the Czech Republic: The Use of 2001 Commuting Data/ Vícestupňový aglomerační přístup k vymezení funkčních regionů České republiky: využití údajů o dojížďce z roku 2001
Authors: Klapka Pavel , Halás Marián , Erlebach Martin , Tonev Petr , Bednář Marek 
Published: May 2015

Abstract
The issue of defining functional regions in the Czech Republic is presented in this paper, which contributes to both theoretical discussions (e.g. the modifiable areal unit problem) and practical applications (e.g. spatial administration, regional planning). A multistage agglomerative approach to functional regional taxonomy is applied, which has been used in Czech geographical research for the first time only recently. The regionalisation algorithm provided four optional solutions for this issue, based on the analysis of daily travel-to-work flows from the 2001 census. The resulting regions correspond to the micro-regional level and two additional tiers were identified at this level. The basic statistics for all variants are presented.
Urban Brownfields in Estonia: Scope, Consequences and Redevelopment Barriers as Perceived by Local Governments/ Urbánní brownfieldy v Estonsku: rozsah, dopady a revitalizační bariéry z pohledu městských samospráv
Authors: Tintěra Jiří , Ruus Aime , Tohvri Epi , Kotval Zenia 
Published: May 2015

Abstract
Awareness of brownfields is limited in Estonia. In fact, there is no specific term officially used for brownfields at present. The aim of this study is to examine concerns in the redevelopment of brownfields and to present preliminary findings regarding the scope, consequences and redevelopment barriers of Estonian urban brownfields, as perceived and assessed by local authorities. The perceived importance of the negative impacts of brownfields on urban space is more than the mere number of brownfields and their total area, as it is influenced by the presence of other negative socioeconomic phenomena, such as local unemployment or population decline. According to municipal authorities, major barriers to the redevelopment of Estonian urban brownfields, besides the economic issues, are both the lack of knowledge regarding state and local measures and tools to help the public sector deal with brownfields, and the common perception that brownfields re-development is a private sector issue.
The Impacts of the European Union’s Common Agricultural Policy on Agriculture in Slovakia/ Dopady společné zemědělské politiky Evropské unie na zemědělství Slovenska
Authors: Némethová Jana , Dubcová Alena , Kramáreková Hilda 
Published: May 2015

Abstract
The impacts of the Common Agricultural Policy of the European Union on Slovak agriculture since the accession of Slovakia to the European Union, are discussed in this paper. Structural changes that were made are reflected in the developmental trends of various agricultural areas. In this paper, the changes in agricultural land use and its categories, in particular landscape types, as well as changes in the numbers and structure of the labour force, changes in the organizational structure of agricultural holdings, the development of cropland areas of the most important crops in crop production, and changes in the number of livestock, are discussed. This analysis also focuses on Slovakia’s position in terms of overall agricultural production within the European Union member states.
In Situ Measurements of Atmospheric CO And Its Correlation With Nox And O3 at a Rural Mountain Site
Authors: Li Jingsong , Reiffs Andreas , Parchatka Uwe , Fischer Horst 
Published: May 2015

Abstract
Ambient concentrations of CO, as well as NOx and O3, were measured as a part of the PARADE campaign conducted at the Taunus Observatory on the summit of the Kleiner Feldberg between the 8th of August and 9th of September 2011. These measurements were made in an effort to provide insight into the characteristics of the effects of both biogenic and anthropogenic emissions on atmospheric chemistry in the rural south-western German environment. The overall average CO concentration was found to be 100.3±18.1 ppbv (within the range of 71 to 180 ppbv), determined from 10-min averages during the summer season. The background CO concentration was estimated to be ~90 ppbv. CO and NOx showed bimodal diurnal variations with peaks in the late morning (10:00-12:00 UTC) and in the late afternoon (17:00-20:00 UTC). Strong correlations between CO and NOx indicated that vehicular emission was the major contributor to the notable CO plumes observed at the sampling site. Both local meteorology and backward trajectory analyses suggest that CO plumes were associated with anthropogenically polluted air masses transferred by an advection to the site from densely populated city sites. Furthermore, a good linear correlation of R2 = 0.54 between CO and O3 (∆O3/∆CO=0.560±0.016 ppbv/ppbv) was observed, in good agreement with previous observations
Development of a Committee of Artificial Neural Networks for the Performance Testing of Compressors for Thermal Machines in Very Reduced Times
Authors: Coral Rodrigo , Flesch Carlos A. , Penz Cesar A. , Borges Maikon R. 
Published: May 2015

Abstract
This paper presents a new test method able to infer - in periods of less than 7 seconds - the refrigeration capacity of a compressor used in thermal machines, which represents a time reduction of approximately 99.95% related to the standardized traditional methods. The method was developed aiming at its application on compressor manufacture lines and on 100% of the units produced. Artificial neural networks (ANNs) were used to establish a model able to infer the refrigeration capacity based on the data collected directly on the production line. The proposed method does not make use of refrigeration systems and also does not require using the compressor oil.
On the Validity of the Noise Model of Quantization for the Frequency-Domain Amplitude Estimation of Low-Level Sine Waves
Authors: Bellan Diego 
Published: May 2015

Abstract
This paper deals with the amplitude estimation in the frequency domain of low-level sine waves, i.e. sine waves spanning a small number of quantization steps of an analog-to-digital converter. This is a quite common condition for high-speed low-resolution converters. A digitized sine wave is transformed into the frequency domain through the discrete Fourier transform. The error in the amplitude estimate is treated as a random variable since the offset and the phase of the sine wave are usually unknown. Therefore, the estimate is characterized by its standard deviation. The proposed model evaluates properly such a standard deviation by treating the quantization with a Fourier series approach. On the other hand, it is shown that the conventional noise model of quantization would lead to a large underestimation of the error standard deviation. The effects of measurement parameters, such as the number of samples and a kind of the time window, are also investigated. Finally, a threshold for the additive noise is provided as the boundary for validity of the two quantization models
Very Sensitive Optical System with the Concentration and Decomposition Unit for Explosive Trace Detection
Authors: Zakrzewska Beata 
Published: May 2015

AbstractThe vapour pressure of most explosives is very low. Therefore, the explosive trace detection is very difficult. To overcome the problem, concentration units can be applied. At the Institute of Optoelectronics MUT, an explosive vapour concentration and decomposition unit to operate with an optoelectronic sensor of nitrogen dioxide has been developed. This unit provides an adsorption of explosive vapours from the analysed air and then their thermal decomposition. The thermal decomposition is mainly a chemical reaction, which consists in breaking up compounds into two or more simple compounds or elements. During the heating process most explosive particles, based on nitro aromatics and alkyl nitrate, release NO2 molecules and other products of pyrolysis. In this paper, the most common methods for the NO2 detection were presented. Also, an application of the concentration and decomposition unit in the NO2 optoelectronic sensor has been discussed.
Simple Wide Frequency Range Impedance Meter Based on AD5933 Integrated Circuit
Authors: Chabowski Konrad , Piasecki Tomasz , Dzierka Andrzej , Nitsch Karol 
Published: May 2015

Abstract
As it contains elements of complete digital impedance meter, the AD5933 integrated circuit is an interesting solution for impedance measurements. However, its use for measurements in a wide range of impedances and frequencies requires an additional digital and analogue circuitry. This paper presents the design and performance of a simple impedance meter based on the AD5933 IC. Apart from the AD5933 IC it consists of a clock generator with a programmable prescaler, a novel DC offset canceller for the excitation signal based on peak detectors and a current to voltage converter with switchable conversion ratios. The authors proposed a simple method for choosing the measurement frequency to minimalize errors resulting from the spectral leakage and distortion caused by a lack of an anti-aliasing filter in the DDS generator. Additionally, a novel method for the AD5933 IC calibration was proposed. It consists in a mathematical compensation of the systematic error occurring in the argument of the value returned from the AD5933 IC as a result. The performance of the whole system is demonstrated in an exemplary measurement.
Hydrogen Detection With a Gas Sensor Array – Processing and Recognition of Dynamic Responses Using Neural Networks
Authors: Gwiżdż Patryk , Brudnik Andrzej , Zakrzewska Katarzyna 
Published: May 2015

Abstract
An array consisting of four commercial gas sensors with target specifications for hydrocarbons, ammonia, alcohol, explosive gases has been constructed and tested. The sensors in the array operate in the dynamic mode upon the temperature modulation from 350°C to 500°C. Changes in the sensor operating temperature lead to distinct resistance responses affected by the gas type, its concentration and the humidity level. The measurements are performed upon various hydrogen (17-3000 ppm), methane (167-3000 ppm) and propane (167-3000 ppm) concentrations at relative humidity levels of 0-75%RH. The measured dynamic response signals are further processed with the Discrete Fourier Transform. Absolute values of the dc component and the first five harmonics of each sensor are analysed by a feed-forward back-propagation neural network. The ultimate aim of this research is to achieve a reliable hydrogen detection despite an interference of the humidity and residual gases.
Distributed Fiber-Optic Sensor for Detection and Localization of Acoustic Vibrations
Authors: Sifta Radim , Munster Petr , Sysel Petr , Horvath Tomas , Novotny Vit , Krajsa Ondrej , Filka Miloslav 
Published: May 2015

Abstract
A sensing system utilizing a standard optical fiber as a distributed sensor for the detection and localization of mechanical vibrations is presented. Vibrations can be caused by various external factors, like moving people, cars, trains, and other objects producing mechanical vibrations that are sensed by a fiber. In our laboratory we have designed a sensing system based on the Φ-OTDR (phase sensitive Optical Time Domain Reflectometry) using an extremely narrow laser and EDFAs.
Measurement of Membrane Displacement with a Motionless Camera Equipped with a Fixed Focus Lens
Authors: Murawski Krzysztof 
Published: May 2015

AbstractThe paper presents a technique for measuring membrane displacements with one motionless camera. The method consists in measuring the distance to an object based on one image obtained from a motionless camera with a fixed-focus lens. The essence of the proposed measurement technique is to determine changes of the distance between a membrane and a video camera based on analysis of changes in the focus view of a marker placed on the membrane plane. It is proven that the used technique allows to monitor the frequency and amplitude of the membrane vibration. The tests were performed for the oscillation frequency in the range from 0.5 Hz to 6 Hz and deviations from the neutral position in the range of ±3 mm.
Managing Academic Internationalization: A Culture-Based Approach
Authors: Burdușel Eva-Nicoleta , Oprean Camelia 
Published: May 2015

Abstract
The goal of the present paper is apply the blue-ocean strategy to the current status of the higher education system, with a major focus on managing cultural diversity in a global world. Universities nowadays represent poles of excellence in terms of cultural innovation, knowledge creation and transfer to the industry, an interface between home and host country as regards academic mobility (teaching and research mobility); they have a significant role in promoting cultural values and informed intercultural communication, creating academic consortia as well as interacting with the local and business communities. The paper shall also redefine: the role of university managers in the context of expanding internationalization, both in terms of student / staff mobility and developing research networks; the relation of universities and higher education to the needs of society, in view of attaining economic growth and technological advancement. In this respect, the cultural centres affiliated to HEIs represent the best vehicle for raising cultural awareness, informed and coherent understanding of „otherness”, overcoming the „either/or” perspective. University differentiation and diversity are key components of current European strategies as illustrated by several documents: New Skills for New Jobs: Action Now; Europe 2020: A Strategy for Smart, Sustainable and Inclusive Growth; EDU 2025; Blue Ocean Strategy; The FOR-UNI Blueprint; 2005 UNESCO Convention on Cultural Diversity. Managing cultural diversity in a global world has become equally a challenge and a prerequisite for higher education institutions in view of their survival on a highly competitive market and will eventually render sustainable advantage at national and international level. Cultural centers affiliated with universities represent poles of excellence in terms of facilitating and promoting interculturality, plurilingualism, staff and student mobility as well as an exchange of teaching and research practices. In this context, the Confucius Institute at “Lucian Blaga” University of Sibiu represents an example of best practice in terms of efficient management and anticipatory leadership.
The Sustainable University – A Model for the Sustainable Organization
Authors: Grecu Valentin , Ipiña Nagore 
Published: May 2015

Abstract
The issue of sustainable development (SD) is increasingly present among the concerns of the international academic community. However, the depth of our unsustainable practices suggests that insufficient progress has been made to move from an unsustainable lifestyle to sustainable development. By sharing ideas, concepts, tools, experiences learned in different contexts, it is anticipated that we will all learn many things that will help us to help our academic communities and companies to develop the skills to make progress towards sustainable development.
In response to increasing concerns of society about environmental degradation and increasing demands for a transition to a more sustainable society, the business companies are increasingly active in aligning their processes and services with a sustainability agenda. A good management of environmental services has now become the focus of many business strategies tending to the aspiration of ‘greening’ their infrastructures and product deliveries. The growing demand for "green" products has created major new markets in which visionary entrepreneurs reap the rewards of approaching sustainability. Hence, by adopting sustainable practices, companies can gain competitive advantage, increase market share and boost shareholder value. The sustainable university can be am model for the organizations that want to embark in the process of transition towards sustainability. This paper presents a model of the sustainable university and the steps that the management of such an organization should follow in order to transform their institution into a green one.
Identification and Quantification of Phenolic Compounds in White Wines From the Apold Vineyard
Authors: Lengyel Ecaterina , Oprean Letiția 
Published: May 2015

Abstract
Wines contain a wide range of aromatic compounds, each having its share in the characterization of the end product. This paper aims at highlighting the phenolic compounds that are present in three types of wine from the Apold Vineyard, compounds that have been determined by modern chromatographic methods. Anthocyanins, flavans, flavones and flavonoids, phenolic acids and microphenolic compounds have been determined in three wines: Pinot gris, Neuburger and Furmint. The results have led to the characterization of these wines and their classification according to the parameters acknowledged by the international authorities.
Influence of Culture Medium on Multiplication of Lactic Bacteria Isolated From Organic Milk in Order to Obtain Biomass
Authors: Oprean Letiția 
Published: May 2015

Abstract
This paper aims to establish direct and predictive methods (statistical) the possibility of obtaining lactic bacteria Lactobacillus delbrueckii var. bulgaricus in higher amounts by using culture medium enriched with carbohydrates in different percentages, for using these in obtaining organic products. The results led to the selection of MRS culture medium enriched with 1% glucose, 2% lactose and 3% maltose as a substrate in order to use multiplication of lactic bacteria isolated from organic milk, collected from organic farms in the area of Sibiu, Romania.
The Traceability Study in the Process of Manufacturing the Cheese With Romano Hard Paste
Authors: Tita Mihaela-Adriana , Cipariu Adriana-Ioana 
Published: May 2015

Abstract
A constant concern of the scientific research in the field of food safety is the identification of methods, to determine in an objective way, the quality of the food, available on the market. The paper analyzes the traceability concept, the importance of traceability implementation of a traceability system, in an organization within the food chain.
Consumers’ Perception and Behavior Towards Ecosanogene Products Made by Goat Milk
Authors: Iancu Ramona Maria 
Published: May 2015

Abstract
This study was conducted in Sibiu, Romania to examine consumers ‘ratings of healthy products made by goat milk and health issues. It has been also examine the sociodemographic factors and the relations between food safety and human welfare. This study is based on a questionnaire, interviewing a target group consists of 105 people. The purpose of this poll was to understand the consumer needs and how the quality of the brand influences purchasing choice. The instrument used for data processing was ANOVA Regression. The results can reveal that the selected model is valid for respondents who ticked test positive, P-value = 1.31E-26 <0.05; for negative response (option “b), P-value = 1.27E-20 <0.05; for tests where the responses was with "do not know" is significantly stronger, too, P-value = 1.61E-17 <0.05. The results presented in ANOVA Table validated the regression model which showed the interdependence between the three selected variables.
Examination of the Average Chipping Rate on the Edges of Milled Granite Surfaces
Authors: Gyurika István Gábor , Szalay Tibor 
Published: May 2015

Abstract
The research described in this article was carried out for the purpose of developing a quantitative marker for defining the average edge chipping rate of milled granite surfaces and for testing and proving whether this quantitative marker can effectively be applied. Another aim of the research was to test the applicability of the developed measurement method and the precision of the body representing the volume loss caused by chipping. The surface edges of the milled specimens were digitised using a laser scanner and chipped volumes were defined on the basis of a body generated with the help of a point cloud, and then the errors of the volumes produced by the evaluation-purpose software were examined using a digital microscope. The investigations proved that the proposed measurement method is accurate and that the replacement body defined through measurements appropriately approximates the volume of chippings in the case of milled granite surfaces.
Torque Measurement of 3-DOF Haptic Master Operated by Controllable Electrorheological Fluid
Authors: Oh Jong-Seok , Choi Seung-Bok , Lee Yang-Sub 
Published: May 2015

Abstract
This work presents a torque measurement method of 3-degree-of-freedom (3-DOF) haptic master featuring controllable electrorheological (ER) fluid. In order to reflect the sense of an organ for a surgeon, the ER haptic master which can generate the repulsive torque of an organ is utilized as a remote controller for a surgery robot. Since accurate representation of organ feeling is essential for the success of the robot-assisted surgery, it is indispensable to develop a proper torque measurement method of 3-DOF ER haptic master. After describing the structural configuration of the haptic master, the torque models of ER spherical joint are mathematically derived based on the Bingham model of ER fluid. A new type of haptic device which has pitching, rolling, and yawing motions is then designed and manufactured using a spherical joint mechanism. Subsequently, the field-dependent parameters of the Bingham model are identified and generating repulsive torque according to applied electric field is measured. In addition, in order to verify the effectiveness of the proposed torque model, a comparative work between simulated and measured torques is undertaken.
Hidden Markov Model-based Pedestrian Navigation System using MEMS Inertial Sensors
Authors: Zhang Yingjun , Liu Wen , Yang Xuefeng , Xing Shengwei 
Published: May 2015

Abstract
In this paper, a foot-mounted pedestrian navigation system using MEMS inertial sensors is implemented, where the zero-velocity detection is abstracted into a hidden Markov model with 4 states and 15 observations. Moreover, an observations extraction algorithm has been developed to extract observations from sensor outputs; sample sets are used to train and optimize the model parameters by the Baum-Welch algorithm. Finally, a navigation system is developed, and the performance of the pedestrian navigation system is evaluated using indoor and outdoor field tests, and the results show that position error is less than 3% of total distance travelled.
Analytical Modeling for the Grating Eddy Current Displacement Sensors
Authors: Lv Chunfeng , Tao Wei , Lei Huaming , Jiang Yingying , Zhao Hui 
Published: May 2015

Abstract
As a new type of displacement sensor, grating eddy current displacement sensor (GECDS) combines traditional eddy current sensors and grating structure in one. The GECDS performs a wide range displacement measurement without precision reduction. This paper proposes an analytical modeling approach for the GECDS. The solution model is established in the Cartesian coordinate system, and the solving domain is limited to finite extents by using the truncated region eigenfunction expansion method. Based on the second order vector potential, expressions for the electromagnetic field as well as coil impedance related to the displacement can be expressed in closed-form. Theoretical results are then confirmed by experiments, which prove the suitability and effectiveness of the analytical modeling approach.