bluuebunny/crossref_metadata_2025_split huggingface dataset:
Polynomial approximation on spheres - generalizing de la Vallée-Poussin
Authors: Sloan Ian H. 
Published: April 2013

AbstractFor trigonometric polynomial approximation on a circle, the century-old de la
Vallée-Poussin construction has attractive features: it exhibits uniform convergence for
all continuous functions as the degree of the trigonometric polynomial goes to infinity,
yet it also has arbitrarily fast convergence for sufficiently smooth functions. This paper
presents an explicit generalization of the de la Vallée-Poussin construction to higher
dimensional spheres S^d ≤ R^{d+1}. The generalization replaces the C^∞ filter introduced by
Rustamov by a piecewise polynomial of minimal degree. For the case of the circle the filter
is piecewise linear, and recovers the de la Vallée-Poussin construction, while for the
general sphere S^d the filter is a piecewise polynomial of degree d and smoothness C^{d−1}.
In all cases the approximation converges uniformly for all continuous functions, and has
arbitrarily fast convergence for smooth functions.
Reactive Distillation for Multiple-Reaction Systems: Optimisation Study Using an Evolutionary Algorithm
Authors: Keller Tobias , Dreisewerd Bjoern , Górak Andrzej 
Published: April 2013

Abstract
Reactive distillation (RD) has already demonstrated its potential to significantly increase reactant conversion and the purity of the target product. Our work focuses on the application of RD to reaction systems that feature more than one main reaction. In such multiple-reaction systems, the application of RD would enhance not only the reactant conversion but also the selectivity of the target product. The potential of RD to improve the product selectivity of multiple-reaction systems has not yet been fully exploited because of a shortage of available comprehensive experimental and theoretical studies. In the present article, we want to theoretically identify the full potential of RD technology in multiple-reaction systems by performing a detailed optimisation study. An evolutionary algorithm was applied and the obtained results were compared with those of a conventional stirred tank reactor to quantify the potential of RD to improve the target product selectivity of multiple-reaction systems. The consecutive transesterification of dimethyl carbonate with ethanol to form ethyl methyl carbonate and diethyl carbonate was used as a case study.
Recovery of HCl from Chloride Leach Solution of Spent HDS Catalyst by Solvent Extraction
Authors: Banda Raju , Nguyen Thi Hong , Lee Man Seung 
Published: April 2013

Abstract
In the present work, amine based extractant and its mixture with cationic and solvating extractants were tested for the extraction of HCl from chloride solution containing Al(III). The chloride feed solution resulted from the leaching of spent HDS (hydro-desulfurization) catalysts. For this purpose, amine extractants, such as TOA (trioctyl amine), Alamine 336 (a mixture of tri-octyl/decyl amine), Alamine 308 (tri-isooctyl amine), and TEHA (tri 2-ethylhexyl amine) were used and the extraction and stripping behavior of HCl was compared. The extracted HCl was easily stripped from loaded TEHA phase, when compared with the other tested tertiary amine system. Solvent extraction reaction of HCl by TEHA was determined from the extraction data. Unlike TOA and Alamine 336, adding cationic extractant to TEHA had negligible effect on the extraction and stripping of HCl. In our experimental ranges, no Al was extracted by amines and pure HCl was recovered. MaCabe- Thiele diagrams for the extraction and stripping of HCl by TEHA were constructed.
Segmentation of Football Video Broadcast
Authors: Mačkowiak Sławomir 
Published: April 2013

Abstract
In this paper a novel segmentation system for football player detection in broadcasted video is presented. Proposed detection system is a complex solution incorporating a dominant color based segmentation technique of a football playfield, a 3D playfield modeling algorithm based on Hough transform and a dedicated algorithm for player tracking, player detection system based on the combination of Histogram of Oriented Gradients (HOG) descriptors with Principal Component Analysis (PCA) and linear Support Vector Machine (SVM) classification. For the shot classification the several classification technique SVM, artificial neural network and Linear Discriminant Analysis (LDA) are used. Evaluation of the system is carried out using HD (1280×720) resolution test material. Additionally, performance of the proposed system is tested with different lighting conditions (including non-uniform pith lightning and multiple player shadows) and various camera positions. Experimental results presented in this paper show that combination of these techniques seems to be a promising solution for locating and segmenting objects in a broadcasted video.
A Spectral Subtraction Based Algorithm for Real-time Noise Cancellation with Application to Gunshot Acoustics
Authors: Ramos António L. L. , Holm Sverre , Gudvangen Sigmund , Otterlei Ragnvald 
Published: April 2013

Abstract
This paper introduces an improved spectral subtraction based algorithm for real-time noise cancellation, applied to gunshot acoustical signals. The derivation is based on the fact that, in practice, relatively long periods without gunshot signals occur and the background noise can be modeled as being short-time stationary and uncorrelated to the impulsive gunshot signals. Moreover, gunshot signals, in general, have a spiky autocorrelation while typical vehicle noise, or related, is periodic and exhibits a wider autocorrelation. The Spectral Suppression algorithm is applied using the pre-filtering approach, as opposed to post-filtering which requires a priori knowledge of the direction of arrival of the signals of interest, namely, the Muzzle blast and the Shockwave. The results presented in this work are based on a dataset generated by combining signals from real gunshots and real vehicle noise.
Rapid Prototyping of Third-Order Sigma-Delta A/D Converters
Authors: Suszyński Robert , Wawryn Krzysztof 
Published: April 2013

Abstract
Prototyping of third-order sigma-delta analog to digital converters (ΣΔ ADCs) has been presented in the paper. The method is based on implementation of field programmable analog arrays (FPAA) to configure and reconfigure proposed circuits. Three third-order ΣΔ ADC structures have been considered. The circuit characteristics have been measured and then the structure of the converters have been reconfigured to satisfy input specifications.
Kinematically unrelated C—S fabrics: an Lexample of extensional shear band cleavage from the Veporic Unit (Western Carpathians)
Authors: Bukovská Zita , Jeřábek Petr , Lexa Ondrej , Konopásek Jiří , Janák Marian , Košler Jan 
Published: April 2013

Abstract
Discontinuous and kinematically unrelated C-S fabrics have been recognized along the contact between the Gemeric and Veporic Units in the Western Carpathians. The formation of S and C fabrics within orthogneiss, quartzite and chloritoid-kyanite schist of the Veporic Unit is associated with Cretaceous syn-burial orogen-parallel flow and subsequent exhumational unroofing. The formation of the two fabrics characterized by distinct quartz deformation microstructure and metamorphic assemblage is separated by an inter-tectonic growth of transversal chloritoid-, kyanite-, ± monazite-bearing assemblage. The monazite U-Th-Pb concordia age of 97 ± 4 Ma was obtained by the laser ablation ICP-MS dating method. The age of this inter-tectonic metamorphic stage together with existing 40Ar/39Ar ages on exhumation of the Veporic Unit indicate that despite the similar appearance to shear bands or C-S mylonites there is a time span of at least 10 Myr between the formation of homogeneous S fabrics and superposed discrete C fabrics in the studied rocks
Biostratigraphy and paleoenvironment of the Upper Cretaceous deposits in the northern Tarcău Nappe (Eastern Carpathians) based on foraminifera and calcareous nannoplankton
Authors: Bindiu Raluca , Filipescu Sorin , Bălc Ramona 
Published: April 2013

Abstract
Late Cretaceous foraminiferal and calcareous nannoplankton assemblages from the northern part of the Tarcău Nappe, Hangu Formation in the northern Eastern Carpathians are documented in order to reconstruct paleoenvironmental settings and biostratigraphy. The foraminiferal assemblages are dominated by flysch-type agglutinated taxa suggesting bathyal environments, close to the calcite compensation depth (CCD), and mesotrophic to oligotrophic conditions. The morphogroup analyses display variations in tubular and infaunal morphotypes suggesting different levels of oxygenation and seafloor disturbance caused by currents. Reddish hemipelagites containing only agglutinated foraminifera (dominant infaunal forms) occurring in the middle part of the section suggest an increase of water depth and changes in redox conditions. Based on foraminifera, the deposits were assigned to planktonic Globotruncana ventricosa and agglutinated Caudammina gigantea Zones. The first occurrence of Uniplanarius trifidus and last occurrence of Reinhardtites anthophorus demonstrate the presence of Late Campanian UC15cTP-UC16/CC21-CC23 calcareous nannoplankton Zones. Foraminiferal and nannofossil assemblages in the red beds have a high potential for stratigraphic correlation on a regional scale.
K/Ar mineral geochronology of the northern part of the Sithonia Plutonic Complex (Chalkidiki, Greece): implications for its thermal history and geodynamic interpretation
Authors: Pipera Kyriaki , Koroneos Antonis , Soldatos Triantafyllos , Pécskay Zoltán , Christofides Georgios 
Published: April 2013

Abstract
New K/Ar mineral ages of thirty nine samples (biotite, muscovite, K-feldspar) from the two-mica granodiorite to granite and leucogranite of the northern part of the Sithonia Plutonic Complex (Chalkidiki, Greece) are given in the present study. These data along with existing Rb/Sr mica and U/Pb zircon ages are used to investigate the thermal history of the plutonic complex and shed light on the process that affected it, and caused discordant Rb/Sr and K/Ar mineral ages. The K/Ar mineral dating yielded ages ranging from 38 to 49 Ma for muscovites, 32 to 47 Ma for biotites and 37 to 43 Ma for K-feldspars, respectively. The comparison of the K/Ar, Rb/Sr and U/Pb mineral ages and the closure temperatures of the different isotopic systems for the different minerals indicate a rapid cooling rate for the Sithonia pluton. The latter supports the hypothesis that the pluton was formed in a post orogenic extensional regime. Moreover, the K/Ar mineral isochrones indicate that a reheating of the pluton took place before 37 Ma and partially rejuvenated the K/Ar and Rb/Sr isotopic system of the minerals
Thermal history of the Podhale Basin in the internal Western Carpathians from the perspective of apatite fission track analyses
Authors: Anczkiewicz Aneta Agnieszka , Środoń Jan , Zattin Massimiliano 
Published: April 2013

Abstract
The thermal history of the Paleogene Podhale Basin was studied by the apatite fission track (AFT) method. Twenty four Eocene-Oligocene sandstone samples yielded apparent ages from 13.8 ± 1.6 to 6.1 ± 1.4 Ma that are significantly younger than their stratigraphic age and thus point to a post-depositional resetting. The thermal event responsible for the age resetting is interpreted as a combination of heating associated with mid-Miocene volcanism and variable thickness of Oligocene and potentially also Miocene sediments. Extending the mid-Miocene thermal event found in the Inner Carpathians into the Podhale Basin as a likely heat source suggests that the amount of denudation in the Podhale Basin determined only on the basis of heat related to the thickness of sedimentary sequence might have be significantly overestimated. Two samples from the western part of the basin that yielded 31.0 ± 4.3 and 26.9 ± 4.7 Ma are interpreted as having mixed ages resulting from partial resetting in temperature conditions within the AFT partial annealing zone. This observation agrees very well with reported vitrinite reflectance and illite-smectite thermometry, which indicate a systematic drop of the maximum paleotemperatures towards the western side of the basin.
THE ROLE OF ADIPOCYTOKINES IN COLON CANCER AND ADENOMAS / ULOGA ADIPOCITOKINA U KANCERU I ADENOMIMA DEBELOG CREVA
Authors: Tulubas Feti , Mete Rafet , Oznur Meltem , Topcu Birol 
Published: April 2013

Summary
Metabolic changes resulting from obesity, insulin insensitivity, and imbalances in hormones such as adiponectin, leptin, resistin, apelin and visfatin, which are derived from white adipose tissue-derived hormone, are directly linked to both colon cancer (CC) and inflammatory bowel diseases increasing tissue-derived risk. We conducted this study to evaluate the relationship between the circulating concentrations of adiponectin, leptin, resistin, apelin and visfatin and colon adenoma and CC. Our study included 90 participants aged >18 years who were divided into three groups: colon cancer, adenoma and control. The serum concentrations of the investigated adipohormones were measured with ELISA in 30 patients with colon adenoma, 30 with CC and 30 controls with no colon pathology. Demographic, anthropometric, metabolic and hormonal parameters were also recorded. The group means were compared by using one-way analysis of variance (ANOVA). Dual comparisons between groups were analyzed with the Tukey test. Pearson correlation coefficient was used to determine the relation between continuous variables. Adiponectin and leptin levels in patients with adenomas (p<0.000; p<0.000, respectively) and CC (p<0.000; p<0.000, respectively) were lower than in controls. Apelin level in patients with CC (p<0.000; p<0.000, respectively) was lower than in patients with adenomas and in controls. Resistin and visfatin levels in patients with CC (p<0.000; p<0.000, respectively) were higher than in patients with adenomas and in controls.
In transit/ion: Sudanese students’ resettlement, pedagogy and material conditions
Authors: Harris Anne 
Published: April 2013

Abstract
For Asante our “battle is intense, the struggle we wage for status power is serious and we cannot communicate as equals when our economic position is that of servants” (2008, p. 49), words that resonated with the author throughout her research with Sudanese Australian young women about their educational experiences, as captured in co-created short films. While the work moved between social science and arts-based research the author questioned the basis of her relationship with the co-participants, and the possibility of fluid status positions within educational contexts. This paper interrogates the im/possibility within neoliberal secondary school contexts for activist educational research (Giroux, 2005) to be the kind of ‘interchange’ of which Asante speaks, a source of creative understanding for researchers and co-participants, if it cannot address co-participants’ (and teacher/student) unequal material conditions. In the case presented in this article, materially-influenced communication challenges reflect current curricular and pedagogical tensions, especially for refugee-background students. Where racial, cultural and socio-economic marginalities intersect, pedagogical and curricular possibilities are sometimes foreclosed before students even enter ‘neoliberal’ classrooms.
Is ‘Teach for All’ knocking on your door?
Authors: Price Anne , McConney Andrew 
Published: April 2013

Abstract
Over the past few decades there has been a rapid expansion in alternative ‘fast track’ routes for teacher preparation. Among the most aggressive of these are Teach for All (TFA) schemes characterized not only by their ultra fast entry to teaching (6 - 7 week course) but also by their underlying philosophy that the so called ‘crisis’ in poor rural and urban schools can be solved by attracting the ‘best and brightest’ university graduates for a two year appointment in ‘difficult to staff’ schools. With its missionary zeal TFA is heralded by some as one way to solve socio- -educational problems that governments cannot. Others condemn such schemes as not only patronizing, but also as part of an ideologically driven and deliberate neoliberal attack on public education, teachers, teacher professionalism and working class or ‘other’ communities. Recently Teach for All came knocking on New Zealand’s door. Concerned about the possible implications of this for the teaching profession and education more generally, the New Zealand Post Primary Teachers Association (PPTA) Te Wehengarua commissioned a review of the international literature on TFA schemes. This paper synthesizes some of the key findings of this review with particular focus on TFA’s marketing strategies and the connections TFA schemes have with so called social entrepreneurs or venture philanthropists, many of whom are actively and aggressively engaged in shaping educational reforms in line with neoliberal agendas.
Philosophical inquiry and the advancement of democratic praxis
Authors: Echeverria Eugenio , Hannam Patricia 
Published: April 2013

Abstract
In a time of advancing neoliberal educational practice globally (e.g. Roxborough, 1997, McCafferty, 2010), in the provision of public sector education as well as in assumptions regarding public educational purposes and curriculum development; this paper looks to a broader definition of education (e.g. Biesta, 2009). The authors argue that pedagogical proposal of the Community of Philosophical Inquiry as in the work of Matthew Lipman (e.g. 2002) and Ann Sharp, a model of educational praxis existent in over 60 countries world wide, can enable the advancement of a vision for deliberative democracy (Lipman, 1998) and social justice and contribute to educational theory and practice in ways which develop communicative rather than individualistic notions of autonomy (Code, 2006, p.170.). Philosophical inquiry, especially as discussed in this paper with adolescents, equips students with the tools to become more critical, to develop a more social and global awareness and consequently enable them to make more reflected moral judgments (Hannam & Echeverria, 2009, p.114). Drawing on practical examples from the direct experience of the authors in the UK and Mexico, as well as building on 40 years of research world wide, an argument is developed for embedding philosophical thinking into all educational environments as a means of forming transformative intellectuals (Giroux, 1988) and enabling a raising of awareness with regard to the consequences of the tacit acceptance of neoliberal educational policies. Furthermore, drawing on the writing of Hannah Arendt (1998) a view is advanced which suggests that deliberative and participatory democratic structures can be developed in our societies where the opportunity for careful thinking as well as conscious action taking can take place.
The Evaluation of Factors Determining the Health Condition of Acer Platanoides and Tilia Cordata Plantings in Selected Sites of Urban Greenery in Poznań, Poland
Authors: Wilkaniec Barbara , Borowiak-Sobkowiak Beata , Wilkaniec Agnieszka , Breś Włodzimierz , Frużyńska-Jóźwiak Dorota 
Published: April 2013

Abstract
Heavily urbanised areas are not a favourable habitat for plant growth and development. On the other hand, urbanised areas can be a favourable habitat for harmful fauna. Tin our study, those trees growing along the roadside were more heavily infested by pests than trees growing in parks. Three orders of insects, mites and lugs were identified on the Norway maple. The dominant insect species was Periphyllus aceris. On small-leaved lime four insect orders (the dominant species was and Eucallipterus tiliae) and mites were found. An overall visual inspection confirmed that of maple and lime growing in city parks were in better condition than those growing by roads.
Pathogenicity of Meloidogyne Incognita Race 1 on Tomato as Influenced by Different Arbuscular Mycorrhizal Fungi and Bioformulated Paecilomyces Lilacinus in a Dysteric Cambisol Soil
Authors: Udo Idorenyin Asukwo , Uguru Michael Ifeanyichukwu , Ogbuji Rufus Omemaramadu 
Published: April 2013

Abstract
A greenhouse experiment was conducted to investigate the single and combined effects of different arbuscular mycorrhizal fungi (AMF) and bioformulated Paecilomyces lilacinus against M. incognita race 1 on tomato. Dysteric Cambisol soil was used. The experiment took place in Calabar, Cross River State, Nigeria. The experiment was laid out as a 3x6 factorial in a completely randomized design (CRD) with three replications. Three applications of the bionematicide were combined with five species of AMF plus an uninoculated control. The results indicated that AMF species differed significantly (p ≤ 0.05) in their efficacy of gall and egg mass inhibition, tomato root colonization rate as well as growth and fresh fruit yield enhancement. Glomus etunicatum and G. deserticola were the most efficient species. Two applications of the bionematicide more significantly (p ≤ 0.05) reduced galling and egg production than a single application. Individual combinations of two AMF (G. etunicatum and G. deserticola) with a double application of the bionematicide, resulted in the greatest gall and egg mass inhibition and consequently the greatest growth and fresh fruit yield enhancement.
Immunoliogical Responses of Hyphantria Cunea (Drury) (Lepidoptera: Arctiidae) to Entomopathogenic Fungi, Beauveria Bassiana (Bals.-Criy) and Isaria Farinosae (Holmsk.) Fr.
Authors: Ajamhassani Maryam , Sendi Jalal Jalali , Zibaee Arash , Askary Hassan , Farsi Mohamad Jafar 
Published: April 2013

Abstract
Five morphological types of hemocytes were recognized in hemolymph of the 4th instar larvae of Hyphantria cunea (Drury). These hemocytes were: prohemocytes, plasmotocytes, granulocytes, oenocytoids, and spherulocytes. Tests were done on the effects of four isolates of the entomopathogenic fungus Beauveria bassiana (Bals.-Criy) (Fashand, spt-22, Ir-K-40 and 566), one isolate of Isaria farinosae (Holmsk.) Fr. (1872c), and latex-beads on the cellular immune defense mechanism and Phenoloxidase (PO) activity of H. cunea. Observation showed that plasmatocytes and granulocytes engulfed fungal pathogens by phagocytosis. The most phagocytosis occurred 30 and 60 min after injection but nodulation occurred in 3 and 6 hours, in all treatments. The total hemocyte count (THC) and granulocyte, and plasmotocyte numbers increased after the injection of spores. Phenoloxidase activity was determined in the presence of L-DOPA (L-3,4-dihydroxyphenylalanine), as a substrate in intervals, after injection of fungal spores, and latex beads. These studies demonstrated that B. bassiana is a promising candidate for biological control of H. cunea.
Progress in developing Poisson-Boltzmann equation
solvers
Authors: Li Chuan , Li Lin , Petukh Marharyta , Alexov Emil 
Published: April 2013

Abstract
This review outlines the recent progress made in developing
more accurate and efficient solutions to model electrostatics
in systems comprised of bio-macromolecules and nanoobjects,
the last one referring to objects that do not have biological
function themselves but nowadays are frequently used
in biophysical and medical approaches in conjunction with
bio-macromolecules. The problem of modeling macromolecular
electrostatics is reviewed from two different angles: as a
mathematical task provided the specific definition of the system
to be modeled and as a physical problem aiming to better
capture the phenomena occurring in the real experiments. In
addition, specific attention is paid to methods to extend the
capabilities of the existing solvers to model large systems toward
applications of calculations of the electrostatic potential
and energies in molecular motors, mitochondria complex,
photosynthetic machinery and systems involving large nanoobjects.