bluuebunny/crossref_metadata_2025_split huggingface dataset:
Simulations Of Air Flow Over A Parabolic Antenna
Authors: Bereteu Liviu , Simoiu Dorin 
Published: October 2015

Abstract
In this paper it is present the influence of the wind on a parabolic antenna, in order to study this influence it was made simulations of air flow over a parabolic antenna. The simulations are made with antenna positioned at 90°, 135°. A three – dimensional finite element is simulated for determination of the antenna displacement.
Mixed Symmetry-Tipe (k,1) Massless Tensor Fields. Consistent Interactions Of Dual Linearized Gravity
Authors: Bizdadea C. , Saliu S. O. , Toma M. 
Published: October 2015

Abstract
A particular case of interactions of a single massless tensor field with the mixed symmetry corresponding to a two-column Young diagram (k,1) with k=4, dual to linearized gravity in D=7, is considered in the context of: self-couplings, cross-interactions with a Pauli-Fierz field, cross-couplings to purely matter theories, and interactions with an Abelian 1-form. The general approach relies on the deformation of the solution to the master equation from the antifield-BRST formalism by means of the local cohomology of the BRST differential.
Evaluation Of Genetoxic Effect Of Radiation Over Vegetal Embryos In Species With Different Radiosensibilities
Authors: Vrîncianu Diana , Ionită Cristina , Băra Iulia , Creangă Dorina 
Published: October 2015

Abstract
This study presents the effects induced by X-rays, medium doses (20-70 Gy), over the meristematic tissues of three cereal species: one of barley and two of wheat. The cytogenetic investigation was based on the response of young seedlings during their very early ontogenetic stages to the ionizing radiation exposure. The study was focused on the identification and counting of the chromosomal aberrations for various doses compared to the control samples. Qualitative evaluation revealed: interchromatidian bridges, expulsed chromosomes or chromosome fragments, and complex aberrations (combination of the already mentioned ones). The different behavior of these three species was discussed over the mitotic index, the number of abnormal ana-telophases and over the percentages of the mitosis phases. In each case, the mitotic index was increased in comparison with the control, and also the number of aberrations was found increased; however no evident mathematical correlations with applied doses could be established.
Calculation Of The Judd - Ofelt Parameters Of The ZnAl2O4: Eu3+
Authors: Constantin S. , Stanciu M.L. 
Published: October 2015

Abstract
Zinc aluminate (ZnAl2O4) doped with rare earth metal ions has been investigated most frequently because of the unique luminescent properties resulting from its stability and high emission quantum yields. The present work is devoted to calculate the Judd-Ofelt parameters (Ω2, Ω4 and Ω6) of the trivalent europium doped in ZnAl2O4 spinel, the quality factor (Q) and the branching ratio (β).
Attribute-Based Parallel Key-Insulated Signature
Authors: Chen Jianhong , Yu Kun , Long Yu , Chen Kefei 
Published: October 2015

Abstract
To deal with the key-exposure protection problem in attribute-based signature systems, we extend the parallel key-insulated mechanism to attribute-based signature scenarios, and then introduce the primitive of an Attribute-Based Parallel Key-Insulated Signature (ABPKIS). After formalizing the definition and security notions for ABPKIS, a concrete ABPKIS scheme is presented. The security of our proposed ABPKIS scheme can be proved on a standard model. According to our knowledge, this is the first ABPKIS scheme up to now. Moreover, this is also the first concrete attribute-based key-insulated signature construction supporting multi-helpers.
Improving QoS Routing in Hybrid Wireless Mesh Networks, Using Cross-Layer Interaction and MAC Scheduling
Authors: Anita C. S. , Suresh R. M. 
Published: October 2015

Abstract
Delivering Quality of Services (QoS) for cooperative Wireless Mesh Networks (WMN) is an important issue when enabling heterogeneous wireless technologies on the client side. A standard approach for satisfying the QoS requirements of different wireless clients appears to be a complex task due to the capacity variations. In addition to the routing layer, the information at the lower layers, such as Physical and Medium Access Control (MAC) layers must be considered for providing the QoS guarantee. The strength of a signal received from heterogeneous clients at the physical layer and the coupled network capacity at the MAC layer plays an important role in the efficient path assignment and time scheduling management for routing. Therefore, this paper proposes an Adaptive Multipath-Dynamic Source Routing (AM-DSR) protocol. It supports Cross-Layer Interaction (CLI) for path assignment and MAC scheduling mechanism for slot assignment to improve the mesh backbone performance for providing multimedia services to various wireless clients in a hybrid WMN. The proposed strategy measures the cross-layer parameter, such as the network capacity, using the Signal to Noise Ratio (SINR) and assigns a route that maximizes the efficiency of the multimedia services. Finally, the performance evaluation shows that the proposed cross-layer based AM-DSR protocol provides efficient QoS support for the mesh backbone enabling connections to multiple clients.
A Neuro Fuzzy Based Intrusion Detection System for a Cloud Data Center Using Adaptive Learning
Authors: Nagarajan Pandeeswari , Perumal Ganeshkumar 
Published: October 2015

Abstract
With its continuous improvements, the cloud computing system leaves an open door for malicious activities. This promotes the significance of constructing a malware action detection component to discover the anomalies in the virtual environment. Besides, the traditional intrusion detection system does not suit for the cloud environment. So, the proposed scheme develops an anomaly detection system, named Hypervisor Detector at a hypervisor layer to detect the abnormalities in the virtual network. Besides, the fuzzy systems have the ability to detect the presence of uncertain and imprecise nature of anomalies; they are not able to construct models based on target data. One of the successful approaches, which integrate fuzzy systems with adaptation and learning proficiencies of a neural network, such as ANFIS (Adaptive Neuro Fuzzy Inference System) model, is based on target values. The Hypervisor Detector is designed and developed with an ANFIS and practised with a hybrid algorithm, a combination of the back propagation gradient descent technique with the least square method. For the experiments and performance analysis, DARPA’s KDD cup data set is used. The performance analysis and results show that the model proposed is well designed to detect the abnormalities in virtual environment with the minimum false alarm rate and reduced overhead.
AAM Based Facial Feature Tracking with Kinect
Authors: Wang Qingxiang , Yu Yanhong 
Published: October 2015

Abstract
Facial features tracking is widely used in face recognition, gesture, expression analysis, etc. AAM (Active Appearance Model) is one of the powerful methods for objects feature localization. Nevertheless, AAM still suffers from a few drawbacks, such as the view angle change problem. We present a method to solve it by using the depth data acquired from Kinect. We use the depth data to get the head pose information and RGB data to match the AAM result. We establish an approximate facial 3D gird model and then initialize the subsequent frames with this model and head pose information. To avoid the local extremum, we divide the model into several parts by the poses and match the facial features with the closest model. The experimental results show improvement of AAM performance when rotating the head.
A two-stage model based on artificial neural networks to determine pitting corrosion status of 316L stainless steel
Authors: Jiménez-Come Maria Jesus , Turias Ignacio J. , Ruiz-Aguilar Juan Jesus 
Published: October 2015

AbstractMotivated to reduce the costs incurred by corrosion in material science, this article presents a combined model based on artificial neural networks (ANNs) to predict pitting corrosion status of 316L austenitic stainless steel. This model offers the advantage of automatically determining the pitting corrosion status of the material. In this work, the pitting corrosion status was predicted, with the environmental conditions considered, in addition to the values of the breakdown potential estimated by the model previously, but without having to use polarization tests. The generalization ability of the model was verified by the evaluation using the experimental data obtained from the European project called “Avoiding Catastrophic Corrosion Failure of Stainless Steel”. Receiver operating characteristic space, in addition to area under the curve (AUC) values, was presented to measure the prediction performance of the model. Based on the results (0.994 for AUC, 0.980 for sensitivity, and 0.956 for specificity), it can be concluded that ANNs become an efficient tool to predict pitting corrosion status of austenitic stainless steel automatically using this two-stage procedure approach.
On the boundedness of the denominators in the Zariski decomposition on surfaces
Authors: Bauer Thomas , Pokora Piotr , Schmitz David 
Published: October 2015

Abstract
Zariski decompositions play an important role in the theory of
algebraic surfaces. For making geometric use of the decomposition of a given divisor,
one needs to pass to a multiple
of the divisor in order to clear denominators. It is therefore
an intriguing question whether the surface has a
“universal denominator” that can be used to simultaneously
clear denominators in all
Zariski decompositions on the surface.
We prove in this paper that, somewhat surprisingly, this condition of
bounded Zariski denominators is equivalent to
the
bounded negativity of curves that is addressed in the
Bounded Negativity Conjecture.
Furthermore, we provide explicit bounds for Zariski denominators
and negativity of curves in terms of each other.
ABCG2/BCRP interaction with the sea grass Thalassia testudinum
Authors: Miguel Verónica , Otero Jon A. , Barrera Borja , Rodeiro Idania , Prieto Julio G. , Merino Gracia , Álvarez Ana I. 
Published: October 2015

Abstract

Background: The aqueous ethanolic extract from leaves of the marine plant Thalassia testudinum has shown antioxidant, cytoprotective, and neuroprotective properties. The chemical composition of this extract, rich in polyphenols, could interfere with active transport of drugs out of the cell and circumvent the phenomenon of multidrug resistance (MDR). The extract can act as an MDR modulator through its interaction with efflux transporters. The ABCG2/BCRP has been shown to confer MDR acting in tumor cells.

Methods: To evaluate the interaction of ABCG2/BCRP with the extract, studies in cells overexpressing human BCRP transporter and its murine ortholog Bcrp1 were performed.

Results and conclusions:
T. testudinum extract could be included as MDR modulator, as interaction with ABCG2/BCRP has been shown through flow cytometry and MTT assays. The cells overexpressing ABCG2/BCRP in the presence of the extract (25–150 μg/mL) decreased the survival rates of the anti-tumoral mitoxantrone. Our results support its inclusion as a possible MDR modulator against tumor cells that overexpress ABCG2/BCRP.
The Use Of Pb-210 Isotope As An Indicator Of Pollutants’ Migration In The Environment
Authors: Dołhańczuk-Śródka Agnieszka 
Published: October 2015

Abstract
Radioactive isotopes, both natural and artificial, present in the environment, may be convenient indicators that can be used to study many physical and chemical processes as well as the transport of pollutants in the ecosystem. The studies have shown that in identification of particulate matter emission sources a radioactive lead isotope (Pb-210) can be used. The Pb-210 increased activity concentration in the top soil layers suggests its current atmospheric deposition. This conclusion is confirmed by the results of the Principal Components Analysis, conducted using the measured radionuclide content in 0-30 cm deep soil layer samples.
Evaluation Of The Usefulness Of Spider Webs As An Air Quality Monitoring Tool For Heavy Metals
Authors: Rybak Justyna , Spówka Izabela , Zwoździak Anna , Fortuna Magdalena , Trzepla-Nabagło Krystyna 
Published: October 2015

Abstract
The study aims at evaluating whether webs reflect the level of air pollution measured with conventional methods. Webs of species Malthonica silvestris (l. KOCH, 1872) (Araneae: Agelenidae) were sampled. Samples were analyzed for heavy metals (Pb, Zn) content. According webs analyses and classic measurements three traffic-oriented sites in Wroclaw (South-West Poland) showed significantly higher mean concentrations of heavy metals than two other sites situated in quieter, low traffic areas. A very strong significant positive correlation was revealed among average concentrations of Zn and Pb associated with fine particulate matter of atmospheric aerosol (PM1) and webs. We also observed a very strong significant positive correlation among Zn and Pb concentrations on webs and PM2.5. Any significant correlation among PM-emission fractions 2.5 and 10 and associated heavy metals and dust deposited on spider webs was not observed. Although spider webs proved useful indicators of environmental pollution the obtained results suggest that this tool should be used to evaluate the emission of heavy metals in the similar way as other bioindicators such as mosses and lichens are commonly used. The measured concentrations on webs do not reflect results obtained with classic methods. We conclude that spider webs are good for bioindication of road traffic emissions, they could be even more reliable compared to use of some other bioindicators whose activity is often limited by the lack of water and sun.
Molecular Monitoring Of Bacterial And Microalgal Biocenoses’ Biodiversity In High Loaded Farming Ponds
Authors: Karło Agata , Ziembińska-Buczyńska Aleksandra , Pilarczyk Maciej , Surmacz-Górska Joanna 
Published: October 2015

Abstract
Eutrophication process is a serious problem in water ecosystems. There is a great need to study the relation between the physico-chemical condition of water and the influence of these parameters on the diversity of biological life, especially on changes in the structure of microbiocenoses. The most interesting are bacteria and microalgae, due to the important roles they play in maintaining the balance of the aquatic environment. In this study, biodiversity analysis of eukaryotic microalgae and bacteria in two artificial water ecosystems - fish farming ponds - was performed. Aquaculture was based on IMTA technology, in which every part of the trophic chain plays a significant role in maintaining the balance in the ecosystems. Experimental intensive - extensive systems differed in terms of nutrient loads, ponds were characterized by high loads of organic and inorganic nitrogen and phosphorus. During the experimental period, the physicochemical conditions, quantitative genotypic structure of the two biocenoses being studied and the relation between these factors were monitored and investigated. For the biodiversity analysis, the PCR - DGGE technique was used. The results of preliminary research showed that there is a correlation between nutrient loads, diversity expressed in the Shannon-Wiener Index and the overall condition of experimental systems. Higher loadings of nutrient promote the development of bacteria and microalgae without any influence on the balance in the artificial ecosystem being tested.
Distance Education as an Object of Study and Reflection of Pedagogy in Poland
Authors: Tanaś Maciej 
Published: October 2015

Abstract
The digitization of the media, their software and hardware combination of computers and the development of networks and their dissemination have made distance learning the subject of research, implementation of practical and scientific reflection once again. Those actions are promoted not only by the development of ICT, but also by progressive globalization, demographic changes and economic and cultural challenges. The scientific discourse is also a part of Polish experiences.
The previous treatment of the subject of this paper were historical in nature, fragmentary or were descriptions of individual experiments and experiences of individual universities. Presented approach has not only a synthetic character, but also provides an outline of the original, the Polish concept of teaching – blended learning.
E-learning Readiness of Organization and Employees
Authors: Kuruliszwili Sergo 
Published: October 2015

Abstract
E-learning is a widely used form of education. There are various kinds of e-learning both from the implementing institutions’ as well as from the learners’ point of view. As the learners are of different professions and educations, e-learning requires an individual approach for each users’ population. The effectiveness of e-learning has been researched, measured and proved as beneficial as other forms of learning, although the problem of readiness for learning activities which would employ modern means of education was not as high. The article presents outcomes of a research made among the group of social service workers in terms of their abilities to undertake e-learning education
Modern Didactics in Contemporary Education
Authors: Kędzierska Barbara , Wnęk-Gozdek Joanna 
Published: October 2015

Abstract
The rapid development of information technology and telecommunications has radically changed the two most important social processes: access to information and communication, allowing the globalization of the economy, culture, education and other areas of society. Priority, undoubtedly, is education, which determines the pace of development in particular countries and the quality of life of individuals. Hypertext and episodic flow of information dramatically changes the way we think and learn. Today, the human cognitive process can no longer be based on the linear structure because shaping knowledge is based on the conscious use of information fragments and episodes that reach the contemporary man in a continuous and often unintentional way. In such conditions, methods and forms of education used for centuries are no longer effective, especially for digital natives who build their intellectual capital.
Bone And Soft Tissue Changes In Patients With Spinal Cord Injury And Multiple Sclerosis
Authors: Dionyssiotis Yannis , Mavrogenis Andreas , Trovas Georgios , Skarantavos Grigorios , Papathanasiou Jannis , Papagelopoulos Panayiotis 
Published: October 2015

Abstract
In patients with spinal cord injury and multiple sclerosis, deterioration of body composition (changes in bone, fat and muscle mass) is associated with increased risk for diseases such as coronary artery heart disease, non-insulin dependent diabetes mellitus, lipid metabolism abnormalities, and osteoporotic fractures in these patients. Immobility leads to a changing pattern of loading in the paralyzed areas, and secondary alteration in structure. However, bone and soft tissue changes in these patients are usually neglected. The purpose of this article is to update on the pathophysiological mechanisms leading to bone and soft tissue changes, and to increase the awareness of the treating physicians with respect to bone, muscle and fat loss and their consequences aiming to obtain measures to prevent bone and soft tissue loss in these patients.
Medical And Surgical Management Of Orbital Cellulitis In Children
Authors: Friling Ronit , Garty Ben-Zion , Kornreich Liora , Scheurman Oded , Hasanreisoglu Murat , Taler Irit , Amir Jacob , Livni Gilat , Snir Moshe 
Published: October 2015

Abstract
Objective: The purpose of this study was to identify features of orbital cellulitis that predict response to conservative treatment without surgical intervention and factors associated with a decision for surgery.
Patients and Methods: The medical files of patients diagnosed with orbital cellulitis at a tertiary medical center in central Israel between 1995 and 2010 were reviewed for clinical data, diagnosis, complications, and type of treatment. Comparison was made between patients treated with antibiotics and patients treated with antibiotics and surgery.
Results: Fifty-one patients (35 male) with a mean age of 6.1 years were identified. Main clinical signs included fever (mean 38.5°C), proptosis (82.3%), extraocular motility restriction (74.5%), and ocular pain (41.1%). Forty-one patients were successfully treated with antibiotics and 10 required endoscopic sinus surgery. On between-group comparison, the surgery group had severe eye pain (p = 0.009), severe proptosis (P = 0.02), longer intravenous antibiotic treatment (13.2 vs. 9.2 days, p = 0.04), and several imaging findings. Additional factors associated with surgical intervention included older children, subperiorbital abscess, larger dimension of the abscess (mean 15 mm), involvement of frontal sinuses and findings of intraorbital air bubbles. There was no visual deterioration in either group and no late sequelae.
Conclusion: Factors associated with surgery included age older than 9 years, severe ocular pain, severe proptosis, and subperiorbital large abscess. These may be used for early identification of patients at risk of failure of only medical management.
Regular subspaces of skew product diffusions
Authors: Li Liping , Ying Jiangang 
Published: October 2015

AbstractRoughly speaking, the regular subspace of a Dirichlet form is also a regular Dirichlet form on the same state space. It inherits the same form of the original Dirichlet form but possesses a smaller domain. What we are concerned in this paper are the regular subspaces of associated Dirichlet forms of skew product diffusions. A skew product diffusionXis a symmetric Markov process on the product state spaceE1×E2${E_{1}\times E_{2}}$and expressed asXt=(Xt1,XAt2),t≥0,$X_{t}=(X^{1}_{t},X^{2}_{A_{t}}),\quad t\geq 0,$whereXi${X^{i}}$is a symmetric diffusion onEi${E_{i}}$fori=1,2${i=1,2}$, andAis a positive continuous additive functional ofX1${X^{1}}$. One of our main results indicates that any skew product type regular subspace ofX, sayYt=(Yt1,YA~t2),t≥0,$Y_{t}=(Y^{1}_{t},{Y^{2}_{\tilde{A}_{t}}}),\quad t\geq 0,$can be characterized as follows: the associated smooth measure ofA~${\tilde{A}}$is equal to that ofA, andYi${Y^{i}}$corresponds to a regular subspace ofXi${X^{i}}$fori=1,2${i=1,2}$. Furthermore, we shall make some discussions on rotationally invariant diffusions onℝd∖{}${\mathbb{R}^{d}\setminus\{{\mathbf{0}}\}}$, which are special skew product diffusions on(0,∞)×Sd-1${(0,\infty)\times S^{d-1}}$. Our main purpose is to extend a regular subspace of rotationally invariant diffusion onℝd∖{}${\mathbb{R}^{d}\setminus\{{\mathbf{0}}\}}$to a new regular Dirichlet form onℝd${\mathbb{R}^{d}}$. More precisely, fix a regular Dirichlet form(ℰ,ℱ)${(\mathcal{E,F}\kern 0.569055pt)}$on the state spaceℝd${\mathbb{R}^{d}}$. Its part Dirichlet form onℝd∖{}${\mathbb{R}^{d}\setminus\{{\mathbf{0}}\}}$is denoted by(ℰ0,ℱ)0${(\mathcal{E}^{0},\mathcal{F}{}^{0})}$. Let(ℰ~0,ℱ~)0${(\tilde{\mathcal{E}}^{0},\tilde{\mathcal{F}}{}^{0})}$be a regular subspace of(ℰ0,ℱ)0${(\mathcal{E}^{0},\mathcal{F}{}^{0})}$. We want to find a regular subspace(ℰ~,ℱ~)${(\tilde{\mathcal{E}},\tilde{\mathcal{F}}\kern 0.569055pt)}$of(ℰ,ℱ)${(\mathcal{E,F}\kern 0.569055pt)}$such that the part Dirichlet form of(ℰ~,ℱ~)${(\tilde{\mathcal{E}},\tilde{\mathcal{F}}\kern 0.569055pt)}$onℝd∖{}${\mathbb{R}^{d}\setminus\{{\mathbf{0}}\}}$is exactly(ℰ~0,ℱ~)0${(\tilde{\mathcal{E}}^{0},\tilde{\mathcal{F}}{}^{0})}$. If(ℰ~,ℱ~)${(\tilde{\mathcal{E}},\tilde{\mathcal{F}}\kern 0.569055pt)}$exists, we call it a regular extension of(ℰ~0,ℱ~)0${(\tilde{\mathcal{E}}^{0},\tilde{\mathcal{F}}{}^{0})}$. We shall prove that, under a mild assumption, any rotationally invariant type regular subspace of(ℰ0,ℱ)0${(\mathcal{E}^{0},\mathcal{F}{}^{0})}$has a unique regular extension.