cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ATTAINING UNIVERSAL ACCESS: PUBLIC-PRIVATE PARTNERSHIP AND BUSINESS-NGO PARTNERSHIP
Creators: name: Chowdhury, Shyamal K.
name: Chowdhury, Shyamal K.
Publisher: name: Unknown
Year: 2002
Subjects: Community/Rural/Urban Development

description: This paper evaluates two alternative mechanisms, Public-Private Partnership in Peru and Business-NGO Partnership in Bangladesh, that provide rural people with access to telecommunications. The two mechanisms that are examined here are considered as two best practices in the provision of rural telecommunications in the context of developing countries. Under two geographically distinct market segments, rural market characterized by low per-subscriber revenue and urban market characterized by high per-subscriber revenue, the traditional provision mechanisms such as state ownership, regulated monopoly and competitive market structure may not provide universal access to the people living in rural areas of developing countries. Attainment of universal access therefore may require alternative institutions. Based on three criteria of universal service provision: non-discriminatory access, uniform pricing and quality restrictions, the study finds that while the Public-Private Partnership in Peru complies with all of the three criteria, the Business-NGO partnership in Bangladesh complies with the first two criteria only. With respect to quality, users are less than satisfied with the current level of provision in Bangladesh. The success of the Business-NGO Partnership implies that the eplication of such a mechanism might require the pre-existence of an organization with local level knowledge and public good objective. In contrast to that, the Public-Private Partnership ensures the provision of universal access under a written contract, and given the public objective, can attract private providers for rural telecom provisions.
title: Hesperidin, a plant flavonoid accelerated the cutaneous wound healing in streptozotocin-induced diabetic rats
title: role of TGF-ß/Smads and Ang-1/Tie-2 signaling pathways
titleType: AlternativeTitle
Creators: name: Li, Wenbin
name: Kandhare, Amit D.
name: Mukherjee, Anwesha A.
name: Bodhankar, Subhash L.
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Diabetic foot ulcer
subject: Hesperidin
subject: VEGF-c
subject: Ang-1
subject: Tie-2
subject: TGF- β
subject: Smad 2/3
subject: 610

description: Background: Delayed wound healing is a diverse, multifactorial, complex and inter-related complication of diabetes resulting in significant clinical morbidity. Hesperidin possesses potent antidiabetic and wound healing activity. Aim: To evaluate the potential of hesperidin against experimentally induced diabetes foot ulcers. Methods: Diabetes was induced experimentally by streptozotocin (STZ, 55 mg/kg, i.p.) in Sprague Dawley rats (180-220 g) and wounds were created on the dorsal surface of the hind paw of rats. Hesperidin (25, 50 and 100 mg/kg, p.o.) was administered for 21 days after wound stabilization. Various biochemical, molecular and histopathological parameters were evaluated in wound tissue. Results: STZ-induced decrease in body weight and increase in blood glucose, food, and water intake was significantly (p < 0.05) inhibited by hesperidin (50 and 100 mg/kg) treatment. It showed a significant increase (p < 0.05) in percent wound closure and serum insulin level. The STZ-induced decrease in SOD and GSH level, as well as elevated MDA and NO levels, were significantly (p < 0.05) attenuated by hesperidin (50 and 100 mg/kg) treatment. Intraperitoneal administration of STZ caused significant down-regulation in VEGF-c, Ang-1, Tie-2, TGF-β and Smad 2/3 mRNA expression in wound tissues whereas hesperidin (50 and 100 mg/kg) treatment showed significant up-regulation in these mRNA expressions. STZ-induced alteration in would architecture was also attenuated by hesperidin (50 and 100 mg/kg) treatment. Conclusion: Together, treatment with hesperidin accelerate angiogenesis and vasculogenesis via up-regulation of VEGF-c, Ang-1/Tie-2, TGF-β and Smad-2/3 mRNA expression to enhance wound healing in chronic diabetic foot ulcers.
description: EXCLI Journal;Vol. 17 2018
Birkner, Hans-Joachim, Rössler, Dietrich: Beiträge zur Theorie des neuzeitlichen Christentums
Creators: name: Kg.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 18 Nr. 3 (1969): Ökumenische Rundschau, Band 18, Heft 3
Constraints on String Resonance Amplitudes
Creators: name: Cheung, Kingman
name: Liu, Yueh-Feng
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform a global analysis of the tree-level open-string amplitudes in the limit $s << M_S^2$ . Based on the present data from the Tevatron, HERA, and LEP~2, we set a lower limit on the string scale $M_S >= 0.69 - 1.96$ TeV at 95 % confidence level for the Chan-Paton factors $|T|=0 - 4$. We also estimate the expected sensitivities at the LHC, which can be as high as 19 TeV for $|T|=4$.
description: 15 pages, including 1 figure and 2 tables
Time-Energy Uncertainty Limit for spin-related wavepacket evolution
Creators: name: Bonfanti, G.
name: Diago-Cisneros, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this report we study the quantum transport of charge carriers for low dimensional systems with spin-orbit coupling by means of Heisenberg's inequalities. To develop our analysis, an accurate \emph{gendanken} experiment was carefully put together, mainly based on the spin-field effect transistor phenomenology and taking into account several wide accepted approaches on quantum mechanical limited determinism. While verifying the applicability of time-energy uncertainty relation (TEUR) during electronic wavepacket's evolution through a semiconductor quantum wire, some qualitative information related the dynamic behavior of the system is found. The problem is also approached in the framework of the stationary phase method to guarantee robust coherence for wavepacket's evolution, which lately implies certain restrictions on the incident energy values for the envisioned cases. Tailoring different input parameters such as: incoming particles spin polarization, barrier thickness and Rashba's spin-orbit interaction (R-SOI) strength, we have observed appealing effects while the packet evolves through a quasi-1D heterostructure. Hopefully some of them could be of help in spintronics device designing. We have obtained most of the numerical simulation results, within the so-called conservation zone. However, for certain barrier thicknesses, some values drop into the forbidden area regarding the clear theoretical limit imposed by the TEUR. As an expected bonus throughout our theoretical validation of the TEUR, spin splitting due to finite values of R-SOI was nicely noticed.
description: 6 pages, 8 figures
Possible Constraints on String Theory in Closed Space with Symmetries
Creators: name: Higuchi, Atsushi
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is well known that certain quadratic constraints have to be imposed on linearized gravity in closed space with symmetries. We review this phenomenon and discuss one of the constraints which arise in linearized gravity on static flat torus in detail. Then we point out that the mode with negative kinetic energy, which is necessary for satisfying this constraint, appears to be missing in the free bosonic string spectrum.
description: 8 pages, presented at NATO Advanced Research Workshop on Noncommutative Structures in Mathematics and Physics, Kiev, Ukraine, 24-27 Sep 2000
title: Hesperidin, a plant flavonoid accelerated the cutaneous wound healing in streptozotocin-induced diabetic rats
title: role of TGF-ß/Smads and Ang-1/Tie-2 signaling pathways
titleType: AlternativeTitle
Creators: name: Li, Wenbin
name: Kandhare, Amit D.
name: Mukherjee, Anwesha A.
name: Bodhankar, Subhash L.
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Diabetic foot ulcer
subject: Hesperidin
subject: VEGF-c
subject: Ang-1
subject: Tie-2
subject: TGF-β
subject: Smad 2/3
subject: 610

description: Background: Delayed wound healing is a diverse, multifactorial, complex and inter-related complication of diabetes resulting in significant clinical morbidity. Hesperidin possesses potent antidiabetic and wound healing activity. Aim: To evaluate the potential of hesperidin against experimentally induced diabetes foot ulcers. Methods: Diabetes was induced experimentally by streptozotocin (STZ, 55 mg/kg, i.p.) in Sprague Dawley rats (180-220 g) and wounds were created on the dorsal surface of the hind paw of rats. Hesperidin (25, 50 and 100 mg/kg, p.o.) was administered for 21 days after wound stabilization. Various biochemical, molecular and histopathological parameters were evaluated in wound tissue. Results: STZ-induced decrease in body weight and increase in blood glucose, food, and water intake was significantly (p < 0.05) inhibited by hesperidin (50 and 100 mg/kg) treatment. It showed a significant increase (p < 0.05) in percent wound closure and serum insulin level. The STZ-induced decrease in SOD and GSH level, as well as elevated MDA and NO levels, were significantly (p < 0.05) attenuated by hesperidin (50 and 100 mg/kg) treatment. Intraperitoneal administration of STZ caused significant down-regulation in VEGF-c, Ang-1, Tie-2, TGF-β and Smad 2/3 mRNA expression in wound tissues whereas hesperidin (50 and 100 mg/kg) treatment showed significant up-regulation in these mRNA expressions. STZ-induced alteration in would architecture was also attenuated by hesperidin (50 and 100 mg/kg) treatment. Conclusion: Together, treatment with hesperidin accelerate angiogenesis and vasculogenesis via up-regulation of VEGF-c, Ang-1/Tie-2, TGF-β and Smad-2/3 mRNA expression to enhance wound healing in chronic diabetic foot ulcers.
description: EXCLI Journal;Vol. 17 2018
title: Στρατηγική βελτιστοποίησης κατάταξης ιστοσελίδων των οργανισμών πληροφόρησης στις μηχανές αναζήτησης
title: Strategic enhancement of web pages classification on search engines of information organizations.
titleType: AlternativeTitle
Creators: name: Μίτοβα, Μιχαέλα
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Βιβλιοθήκες
Εύρεση περιεχομένου
Βελτιστοποίηση μηχανών αναζήτησης
Τεχνολογία
Αναζήτηση

description: Η εξέλιξη του διαδικτύου έχει προκαλέσει αξιόλογη επανάσταση σε πολλούς τομείς με σημαντικότερο τον τρόπο με τον οποίο αναζητούνται οι πληροφορίες στην σύγχρονη καθημερινότητά. Οι μηχανές αναζήτησης αποτελούν αρχικά ένα μέσο για την αποτελεσματική αναζήτηση πληροφοριών στο διαδίκτυο αλλά εν συνεχεία και μια υπηρεσία με την οποία προσελκύεται το κοινό στις εταιρικές ιστοσελίδες (Chaffey, 2008). Αυτή η διατριβή επιδιώκει να αξιολογήσει τη χρήση τεχνικών SEO για οργανισμούς πληροφοριών, βάσει των ιστότοπων έξι οργανισμών βιβλιοθηκών. Συγκεκριμένα, στην παρούσα έρευνα, εξετάστηκαν 6 γνωστές βιβλιοθήκες, ως προς την παγκόσμια ταξινόμησή τους στις λίστες κατάταξης και τα χαρακτηριστικά των ιστοσελίδων τους. Οι βιβλιοθήκες είναι οι Boston Public Library, Bibliotheque National De France, Alexandria Library, New York Public Library, British Library και Library of Congress. Οι ιστοσελίδες των βιβλιοθηκών εξετάστηκαν με τη χρήση συγκεκριμένων λογισμικών, κάθε ένα από τα οποία αξιολογεί κάποιες παραμέτρους. Τα λογισμικά είναι τα Similar Web, Checkbot, SEMRush, Backlink Checker, ένα λογισμικό μέτρησης της ταχύτητας φόρτωσης, και το GTMetrix. Από τα αποτελέσματα της έρευνας διαπιστώθηκε πως η βιβλιοθήκη της Γαλλίας είναι μακράν πρώτη ως προς το πλήθος επισκεπτών ενώ οι περισσότερες άμεσες αναζητήσεις, γίνονται για την βιβλιοθήκη της Νέας Υόρκης και της Βοστώνης η οποία προσελκύει σημαντικό ποσοστό των επισκεπτών της μέσω διαφήμισης, ενώ η Βρετανική βιβλιοθήκη έχει το μεγαλύτερο ποσοστό τυχαίων αναζητήσεων. Τέλος, διαπιστώθηκε πως οι βιβλιοθήκες που είναι υψηλότερα στην κατάταξη, έχουν περισσότερες λέξεις κλειδιά στη σελίδα τους και καλύτερες επιδόσεις σε κινητά και υπολογιστές.
Tailoring interface mixing and magnetic properties in (111) Permalloy/Pt multilayers
Creators: name: Kateb, Movaffaq
name: Gudmundsson, Jon Tomas
name: Ingvarsson, Snorri
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present deposition and characterization of multilayers consisting of 20 repetitions of 15 $Å$ thick permalloy Ni$_{80}$Fe$_{20}$ at. \% (Py) and 5 $Å$ Pt. The samples were prepared by two different sputter deposition methods, namely dc magnetron sputtering (dcMS) and high power impulse magnetron sputtering (HiPIMS), that represent low and moderate ionized flux fraction of the film forming material, respectively, for deposition of the Py layers. The effect of substrate roughness, working gas pressure and sputter power on the in-plane uniaxial magnetic anisotropy of the films are studied. The multilayers were characterized by X-ray reflectivity and diffraction, and by magneto-optical Kerr effect (MOKE). It is shown that HiPIMS deposition produces multilayers with unique surface roughness regardless of the substrate surface roughness. Multilayers prepared by both dcMS and HiPIMS deposition present a strong (111) texture normal to the film plane. The results show that utilizing HiPIMS for deposition of the Py layer leads to a minimum interface mixing between individual layers compared to dcMS deposition performed at sputter power. This is associated with the smooth surface of Py deposited by HiPIMS. However, this sharp interface results in higher coercivity and an opening in the hard axis hysteresis loops while multilayers with intermixing present well defined in-plane uniaxial anisotropy i.e. a linear hard axis. Comparison with Py/Cu and Py/CuPt multilayers, prepared under identical conditions using HiPIMS, suggests that poor in-plane uniaxial anisotropy is obtained in the Py/Pt case, caused by the inverse magnetostriction arising from the large lattice mismatch between Py and Pt. The Py/Pt multilayers that exhibit interface mixing have a more relaxed interface and thus presents negligible inverse magnetostriction and have better defined anisotropy.
description: 7 pages, 5 figures
Dynamical coupled-channel approach to hadronic and electromagnetic production of kaon-hyperon on the proton
Creators: name: Julia-Diaz, B.
name: Saghai, B.
name: Lee, T. -S. H.
name: Tabakin, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A dynamical coupled-channel formalism for processes $πN \to KY$ and $γN \to KY$ is presented which provides a comprehensive investigation of recent data on the $γp \to K^+ Λ$ reaction. The non-resonant interactions within the subspace $KY\oplusπN$ are derived from effective Lagrangians, using a unitary transformation method. The calculations of photoproduction amplitudes are simplified by casting the coupled-channel equations into a form such that the empirical $γN \to πN$ amplitudes are input and only the parameters associated with the $KY$ channel are determined by performing $χ^2$-fits to all of the available data for $π^- p \to K^\circΛ, K^\circΣ^\circ$ and $γp \to K^+Λ$. Good agreement between our models and those data are obtained. In the fits to $πN \to KY$ channels, most of the parameters are constrained within $\pm 20%$ of the values given by the Particle Data Group and/or quark model predictions, while for $γp \to K^+ Λ$ parameters, ranges compatible with broken $SU(6)\otimes O(3)$ symmetry are imposed. The main reaction mechanisms in $K^+ Λ$ photoproduction are singled out and issues related to newly suggested resonances $S_{11}$, $P_{13}$, and $D_{13}$ are studied. Results illustrating the importance of using a coupled-channel treatment are reported. Meson cloud effects on the $γN \to N^*$ transitions are also discussed.
description: Accepted Physical Review C
Physics-based Shadow Image Decomposition for Shadow Removal
Creators: name: Le, Hieu
name: Samaras, Dimitris
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We propose a novel deep learning method for shadow removal. Inspired by physical models of shadow formation, we use a linear illumination transformation to model the shadow effects in the image that allows the shadow image to be expressed as a combination of the shadow-free image, the shadow parameters, and a matte layer. We use two deep networks, namely SP-Net and M-Net, to predict the shadow parameters and the shadow matte respectively. This system allows us to remove the shadow effects from images. We then employ an inpainting network, I-Net, to further refine the results. We train and test our framework on the most challenging shadow removal dataset (ISTD). Our method improves the state-of-the-art in terms of root mean square error (RMSE) for the shadow area by 20\%. Furthermore, this decomposition allows us to formulate a patch-based weakly-supervised shadow removal method. This model can be trained without any shadow-free images (that are cumbersome to acquire) and achieves competitive shadow removal results compared to state-of-the-art methods that are trained with fully paired shadow and shadow-free images. Last, we introduce SBU-Timelapse, a video shadow removal dataset for evaluating shadow removal methods.
description: PAMI21 - Camera Ready Version. arXiv admin note: substantial text overlap with arXiv:1908.08628
Co-valorization of discarded wood pinchips and sludge from the pulp and paper industry for production of advanced biofuels
Creators: name: Romaní, Aloia
name: Del-Río, Pablo
name: Rubira, Alexandre
name: Pérez, María José
name: Garrote, Gil
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 40
subject: Engineering

description: Several lignocellulosic wastes are generated in the pulp and paper industry (PPI), such as small wood chips (pinchips) and paper sludge, presenting a high cellulose content suitable to be converted into biofuels or bio-products in a forest biorefinery scheme. In this work, two schemes of biorefinery were proposed for their valorization, processing small eucalyptus wood pinchips in two different strategies: (i) autohydrolysis at 230ºC, and (ii) autohydrolysis at 195ºC followed by organosolv process (47.7% ethanol-water, 198ºC for 60 min). More than 95% of cellulose was recovered in both schemes. In the combined process, 76% of delignification was achieved and 78% of xylan was solubilized as xylooligosaccharides. To reduce operational cost of lignocellulosic biomass-to-ethanol fermentation, the mixture of the treated eucalyptus pinchips from two processes with sludge was also proposed to increase the initial glucan content and to supply a rich source of nitrogen (present in the sludge). For that, two experimental designs were carried out for ethanol production by simultaneous saccharification and fermentation (SSF) process. Ethanol from SSF assays using sludge as co-substrate at 0.6 g of sludge/g of treated wood pinchips and 16 FPU/g of pretreated solids allowed to obtain 59 g/L (90% of conversion) and 46 g/L (96% of conversion) when blended with the wood from autohydrolysis and with the wood from autohy-drolysis followed by organosolv, respectively. Overall, this study shows an alternative process valorization of biomasses derived from PPI for production of advanced biofuels and bio-products (such as xylooligosaccharides and lignin) contributing to achieving a circular economy
title: Survivin polymorphisms and susceptibility to prostate cancer
title: a genetic association study and an in silico analysis
titleType: AlternativeTitle
Creators: name: Karimian, Mohammad
name: Aftabi, Younes
name: Mazoochi, Tahereh
name: Babaei, Faezeh
name: Khamechian, Tahereh
name: Boojari, Hossein
name: Nikzad, Hossein
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Prostate cancer
subject: Survivin gene
subject: Genetic polymorphism
subject: In silico analysis
subject: 610

description: Survivin is a member of the apoptosis inhibitor protein family and its polymorphisms may lead to susceptibility to cancer. The aim of this study was to investigate the possible association of c.-31G>C (rs9904341), c.454G>A (rs2071214), c.*148T>C (rs2239680) and c.*571T>C (rs1042489) polymorphisms of survivin gene with prostate cancer risk and provide some justification using in silico analysis. The 157 men with prostate cancer and 145 healthy controls were included in a case-control study. The studied polymorphisms were genotyped using PCRRFLP method. An in silico approach was employed to show the possible effects of the polymorphisms on the survivin gene function. The study revealed that there are significant associations between c.-31CC genotype (OR= 2.29, 95 % CI= 1.20-4.37, p= 0.012), c.-31C allele (OR= 1.62, 95 % CI= 1.17-2.26, p= 0.004), c.454AG genotype (OR= 2.03, 95 % CI= 1.02-4.04, p= 0.043), and c.*148C allele (OR= 1.49, 95 % CI= 1.04-2.15, p= 0.031) with prostate cancer. Using stratified analysis, we found also significant effects of age distribution on the association of c.-31G>C with prostate cancer risk (OR= 2.10, 95 % CI= 1.08-4.10, p= 0.030). Also as a preliminary study, it was shown that smoking status has significant effects on the association of c.-31G>C (OR= 1.94, 95 % CI= 1.08- 3.49, p= 0.027) and c.*148T>C (OR= 2.60, 95 % CI= 1.47-4.60, p= 0.001) polymorphisms with prostate cancer risk. Finally, in silico analysis revealed that c.-31G>C, which is located in a CpG island of the promoter may change transcriptional regulation of survivin gene and c.454G>A and *148T>C could affect protein structure and possible miRNA interaction with 3'-UTR of survivin transcript respectively. According to the results, c.-31G>C, c.454G>A, and c.*148T>C polymorphisms could be genetic risk factors for prostate cancer in an Iranian population. However, further studies with larger sample size and different ethnicities are required to obtain more comprehensive results.
description: EXCLI Journal;Vol. 17 2018
Precision Counting of Small Black Holes
Creators: name: Dabholkar, Atish
name: Denef, Frederik
name: Moore, Gregory W.
name: Pioline, Boris
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has recently been proposed that a class of supersymmetric higher-derivative interactions in N=2 supergravity may encapsulate an infinite number of finite size corrections to the microscopic entropy of certain supersymmetric black holes. If this proposal is correct, it allows one to probe the string theory description of black-hole micro-states to far greater accuracy than has been possible before. We test this proposal for ``small'' black holes whose microscopic degeneracies can be computed exactly by counting the corresponding perturbative BPS states. We also study the ``black hole partition sum'' using general properties of of BPS degeneracies. This complements and extends our earlier work in hep-th/0502157
description: 103 pages, uses JHEP3.cls
Frequency-based IOR is not "true" IOR
Creators: name: Prime, David J.
Publisher: name: University of British Columbia
Year: 2009

description: Auditory frequency cues can influence attention orienting in auditory frequency space; cues that match targets in frequency have a facilitatory effect on reaction time and accuracy for cue-target intervals of up to two seconds (Ward, 1997). Mondor, Breau, and Milliken (1998) found that this facilitatory effect can reverse to an inhibitory effect at cue-target intervals longer than 450 msec under some conditions. Mondor et al. referred to this effect as frequency-based Inhibition of Return (IOR). The present work demonstrates that inhibitory effects are not found in frequency target-target experiments (Experiment 1) or in cue-target experiments in which the experimental task reduces the probability that response inhibition to the cue will affect reaction time (Experiment 2). These results show that frequency-based IOR can be empirically distinguished from spatial IOR and that inhibitory effects in frequency cue-target experiments may arise from response inhibition to the cue. The present work, as well as functional and neurophysiological arguments, support the position that the term IOR should be reserved for inhibitory spatial effects.
On the Economics of Refugee Flows
Creators: name: Stark, Oded
name: Stark, Oded
Publisher: name: Unknown
Year: 2004
Subjects: Labor and Human Capital
Political Economy

description: Although the phenomenon of refugee flows is not devoid of economic connotations, it has so far been investigated primarily by political scientists and sociologists. The analytical tools of economic inquiry have not yet been applied to this subject, although it stands to reason that such a study will contribute to our understanding of why refugee flows occur and will guide the policy response. This note illustrates how economic analysis can be brought to bear on three key aspects of refugee flows: fear, poverty, and group movement.
Homology of $\GL_n$ over infinite fields outside the stability range
Creators: name: Mirzaii, Behrooz
Publisher: name: arXiv
Year: 2020
Subjects: subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: Primary: 19D55, 19D45, Secondary: 20J06

description: For an infinite field $F$, we study the kernel of the map $H_{n}(\mathrm{GL}_{n-1}(F),\mathbb{Z}\Big[\frac{1}{(m-2)!}\Big]) \to H_{n}(\mathrm{GL}_{n}(F),\mathbb{Z}\Big[\frac{1}{(m-2)!}\Big])$ and the cokernel of $H_{n+1}\Big(\mathrm{GL}_{n-1}(F),\mathbb{Z}\Big[\frac{1}{(m-2)!}\Big]\Big) \to H_{n+1}\Big(\mathrm{GL}_{n}(F),\mathbb{Z}\Big[\frac{1}{(m-2)!}\Big]\Big)$. We give conjectural estimates of these kernels and cokernels and prove our conjectures for $n\leq 4$.
description: 26 pages, Latex
Lifestyle behaviors and serum vitamin C in the Thai population in Bangkok Metropolitan
Creators: name: Boonpangrak, Somchai
name: Tantimongcolwat, Tanawut
name: Treeratanapiboon, Lertyot
name: Leelahakul, Pairoj
name: Prachayasittikul, Virapong
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Serum vitamin C
subject: Vitamin C dietary intake
subject: Lifestyle behaviors
subject: Smokers
subject: Alcohol drinkers
subject: Outdoor workers
subject: 610

description: This study aimed to investigate the influence of lifestyle behaviors on the vitamin C levels in the circulating blood of the Thai population in Bangkok Metropolitan. The participants (n=250) included community workers (i.e., construction and business office workers) from the Bangkok Metropolitan, and the participants were placed in various behavior and lifestyle groups (Group I: reference; Group II: alcohol drinkers; Group III: outdoor workers; Group IV: smokers; and Group V: combined). The results showed that the lowest and highest vitamin C intakes were 7 and 27 mg/day in Groups IV and III, respectively. Group I (indoor workers free of smoking and drinking), had the highest total serum vitamin C level (39.7 μmol/L), while Group V (outdoor workers with smoking and drinking), had the lowest value (12.5 μmol/L). Furthermore, Group V had the highest prevalence (44 %) of total serum vitamin C deficiency (<11 μmol/L), while Group I had the lowest deficient indication (8 %). The vitamin C dietary intake and total serum levels were positively correlated in the reference group (Spearman’s correlation=0.402, p < 0.05) but not in the other four groups. The significant adjusted odds ratio of inadequate total serum vitamin C (< 23 μmol/L) was 2.90 (CI: 1.15, 7.31) in Group IV and 3.73 (CI: 1.42, 9.81) in Group V. Moreover, the tendency to have an inadequate total serum vitamin C level was demonstrated in the following order: Group I < II < III < IV < V. Our results indicated that outdoor workers (Group III) and smokers (Group IV) had a greater likelihood of having a vitamin C deficiency than the reference group. A high percentage of deficiency was clearly observed among the outdoor workers with smoking and drinking behaviors (Group V).
description: EXCLI Journal;Vol. 17 2018
Software design for panoramic astronomical pipeline processing
Creators: name: Shamir, Lior
name: Nemiroff, Robert J.
name: Torrey, David O.
name: Pereira, Wellesley E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe the software requirement and design specifications for all-sky panoramic astronomical pipelines. The described software aims to meet the specific needs of super-wide angle optics, and includes cosmic-ray hit rejection, image compression, star recognition, sky opacity analysis, transient detection and a web server allowing access to real-time and archived data. The presented software is being regularly used for the pipeline processing of 11 all-sky cameras located in some of the world's premier observatories. We encourage all-sky camera operators to use our software and/or our hosting services and become part of the global Night Sky Live network.
description: 1 figure. Accepted for publication in MNRAS
WILLINGNESS TO PAY FOR THE TELEPHONE SERVICE IN BANGLADESH AND PERU
Creators: name: Torero, Maximo
name: Chowdhury, Shyamal K.
name: Galdo, Virgilio
name: Torero, Maximo
name: Chowdhury, Shyamal K.
name: Galdo, Virgilio
Publisher: name: Unknown
Year: 2002
Subjects: Consumer/Household Economics

description: This paper measures the rural households' willingness to pay (WTP) for access to public telephone services in Bangladesh and Peru through contingent valuation methods. The development of contingent valuation methods together with the econometric expansion of qualitative response models has permitted an approximation to the consumer surplus in the presence of externalities, public good and information asymmetries. The paper utilizes both parametric and nonparametric estimations that are commonly observed in the literature concerned with the estimation of WTP. The main result of the paper suggest that rural telecommunications projects are welfare enhancing, since households' WTP are higher than the prevailing tariff rates. For Peru, households' currently pay US$0.14 for local calls and US$ 0.29 for national long distance calls (LDN), while their WTP for a local call varies from US$0.25 to US$0.35, and for a LDN call varies from US$0.33 to US$0.45. For Bangladesh, households' WTP for a local call varies from US$0.10 to US$0.26, for a LDN call from US$0.23 to US$0.50, and for an international call from US$0.93 to US$1.35. Meanwhile, they are currently paying US$ 0.03, US$ 0.06 and US$ 0.46 respectively. Despite the fact that the monetary measures of WTP vary depending on measurement methods, the results are consistent for all the parametric and non-parametric measures utilized suggesting that the rural telecommunications projects in Bangladesh and Peru are directly contributing to the improvement of welfare of rural households.
Antioxidant and nephro-protective effect of Juglans regia vegetable oil against lead-induced nephrotoxicity in rats and its characterization by GC-MS
Creators: name: Soussi, Ahlem
name: Gargouri, Manel
name: Akrouti, Amel
name: El Feki, Abdelfattah
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Antioxidant activities
subject: GC-MS
subject: Juglans regia
subject: Nephrotoxicity
subject: Lead
subject: Rats
subject: 610

description: Lead (Pb) intoxication remains a major health hazard causing various deleterious effects especially on renal and hematologic system. The current study elucidated the potential protective effect of JRVO against nephrotoxicity induced by lead. Male rats were randomly divided into three groups: group one (control) received ad libitum distilled water and 1 mL of saline solution (0.9 %) given by intra-peritoneal (i.p) injection, group two (Pb) was kept on tap distilled water and animals were i.p, injected daily with lead every two days from day five until day ten, namely the sacrifice day, and group three (Pb+J) was administered by intra-peritoneal injection of Pb with the same dose and same way with Group two, while JRVO extract was administered daily by gavage during ten days. The exposure of lead reduced the number of red and white blood cells. Besides, plasma biomarkers (urea, uric acid, creatinine, LDH and ALP) levels were reduced. Lipid and protein per-oxidations increased and objectified by high TBARS and PCOs levels, while glutathione peroxidase, superoxide dismutase and catalase activities showed a significant decline after ten-day treatment. Conversely, the JRVO prevented kidney biomarker changes by improving hepatotoxicity induced by lead as evidenced by restoring the biochemical markers cited above to near normal levels. Kidney histoarchitecture confirmed the biochemical parameters and the beneficial role of JRVO. It can be concluded that the administration of JRVO alleviates Pb-induced toxicity, thus demonstrating its potent antioxidant efficacy.
description: EXCLI Journal;Vol. 17 2018
Morphology-induced spectral modification of self-assembled WS2 pyramids
Creators: name: Komen, Irina
name: van Heijst, Sabrya E.
name: Conesa-Boj, Sonia
name: Kuipers, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Due to their intriguing optical properties, including stable and chiral excitons, two-dimensional transition metal dichalcogenides (2D-TMDs) hold the promise of applications in nanophotonics. Chemical vapor deposition (CVD) techniques offer a platform to fabricate and design nanostructures with diverse geometries. However, the more exotic the grown nanogeometry, the less is known about its optical response. WS2 nanostructures with geometries ranging from monolayers to hollow pyramids have been created. The hollow pyramids exhibit a strongly reduced photoluminescence with respect to horizontally layered tungsten disulphide, facilitating the study of their clear Raman signal in more detail. Excited resonantly, the hollow pyramids exhibit a great number of higher-order phononic resonances. In contrast to monolayers, the spectral features of the optical response of the pyramids are position dependent. Differences in peak intensity, peak ratio and spectral peak positions reveal local variations in the atomic arrangement of the hollow pyramids crater and sides. The position-dependent optical response of hollow WS2 pyramids is characterized and attributed to growth-induced nanogeometry. Thereby the first steps are taken towards producing tunable nanophotonic devices with applications ranging from opto-electronics to non-linear optics.
description: 16 pages, 9 figures in total (main + supplementary materials)
title: Τα κοινωνικά και δημογραφικά χαρακτηριστικά που επηρεάζουν το επίπεδο της συναισθηματικής νοημοσύνης των εκπαιδευτικών ειδικής αγωγής της τυπικής εκπαίδευσης
title: Social and demographic factors that affect the level of emotional intelligence of special education teachers in formal education
titleType: AlternativeTitle
Creators: name: Πετράκη, Μαρία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Συναισθηματική νοημοσύνη
Εκπαιδευτικοί
Ειδική αγωγή
Δημογραφικά χαρακτηριστικά

description: Σκοπός της εργασίας ήταν να μελετήσει το βαθμό στον οποίον τα κοινωνικά και δημογραφικά χαρακτηριστικά των εκπαιδευτικών ειδικής αγωγής στην Ελλάδα, μπορούν να επηρεάσουν το επίπεδο της συναισθηματικής νοημοσύνης τους. Επιμέρους στόχοι της εργασίας ήταν η μελέτη της φύσης της σχέσης μεταξύ των δημογραφικών και λοιπών χαρακτηριστικών των εκπαιδευτικών ειδικής αγωγής και της συναισθηματικής τους νοημοσύνης, εφόσον υφίσταται τέτοια σχέση καθώς και η μελέτη του επιπέδου της συναισθηματικής νοημοσύνης των εκπαιδευτικών ειδικής αγωγής στην Ελλάδα. Για τους σκοπούς της εργασίας, διενεργήθηκε ποσοτική έρευνα, μεταξύ εκπαιδευτικών ειδικής αγωγής, οι οποίοι απασχολούνται στην Πρωτοβάθμια και Δευτεροβάθμια εκπαίδευση στην Ελλάδα και τη στατιστική επεξεργασία των δεδομένων που συλλέχθηκαν. Από την ανάλυση που πραγματοποιήθηκε, προέκυψε ότι: (α) το επίπεδο συναισθηματικής νοημοσύνης των εκπαιδευτικών ειδικής αγωγής που εργάζονται στην Πρωτοβάθμια και Δευτεροβάθμια εκπαίδευση στην Ελλάδα είναι υψηλό, (β) το χαρακτηριστικό του φύλου επηρεάζει με στατιστικά σημαντικό τρόπο το επίπεδο συναισθηματικής νοημοσύνης των εκπαιδευτικών ειδικής αγωγής που εργάζονται στην Πρωτοβάθμια και Δευτεροβάθμια εκπαίδευση στην Ελλάδα και (γ) το επίπεδο συναισθηματικής νοημοσύνης των γυναικών εκπαιδευτικών ειδικής αγωγής στην Ελλάδα είναι υψηλότερο από το επίπεδο συναισθηματικής νοημοσύνης των ανδρών εκπαιδευτικών ειδικής αγωγής στην Ελλάδα.
Measurement of B(t->Wb)/B(t->Wq) at the Collider Detector at Fermilab
Creators: name: CDF Collaboration
name: Acosta, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a measurement of the ratio of top-quark branching fractions R= B(t -> Wb)/B(t -> Wq), where q can be a b, s or a d quark, using lepton-plus-jets and dilepton data sets with integrated luminosity of ~162 pb^{-1} collected with the Collider Detector at Fermilab during Run II of the Tevatron. The measurement is derived from the relative numbers of t-tbar events with different multiplicity of identified secondary vertices. We set a lower limit of R > 0.61 at 95% confidence level.
description: 7 pages, 2 figures, published in Physical Review Letters; changes made to be consistent with published version
Οι μεταλλάξεις του θεσμικού πλαισίου της τρομοκρατίας σε εθνικό και διεθνές περιβάλλον
Creators: name: Νάκης, Δημήτριος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2020
Subjects: subject: Τρομοκρατία
subject: Βία
subject: Ανθρώπινα δικαιώματα
subject: Ασφάλεια
subject: ΗΠΑ
subject: ΟΗΕ

description: Η αυγή του 21ου αιώνα, σηματοδότησε σημαντικές αλλαγές στο χώρο της τρομοκρατίας. Η κατάρρευση του διπολισμού, η τρομοκρατική επίθεση στους Δίδυμους Πύργους, η όξυνση των φαινομένων θρησκευτικής τρομοκρατίας, καθώς και η διάδοση των όπλων μαζικής καταστροφής, έχουν συμβάλλει καθοριστικά στη μετάλλαξη της τρομοκρατίας και την αναγωγή της σε ζήτημα διεθνούς ασφάλειας. Σκοπός, λοιπόν, της παρούσας εργασίας είναι να παρουσιάσει την ιστορική εξέλιξη του φαινομένου της τρομοκρατίας. Παράλληλα, στοχεύει να αποτυπώσει τις διαχρονικές αλλαγές που επήλθαν στην κείμενη νομοθεσία σε εθνικό, ευρωπαϊκό και διεθνές επίπεδο. Η εργασία ερευνά, επιπλέον, την τρομοκρατία ως μέρος της εξωτερικής πολιτικής των Η.Π.Α. Τέλος, πραγματεύεται την περιστολή των ατομικών ελευθεριών και ανθρωπίνων δικαιωμάτων ως αποτέλεσμα εφαρμογής των αντιτρομοκρατικών νομοθεσιών.
ESTIMATING SAMPLING VARIANCE FROM THE CURRENT POPULATION SURVEY: A SYNTHETIC DESIGN APPROACH TO CORRECTING STANDARD ERRORS
Creators: name: Jolliffe, Dean
name: Jolliffe, Dean
Publisher: name: Unknown
Year: 2002
Subjects: Research Methods/ Statistical Methods

description: Essentially all empirical questions that are addressed with sample data require estimates of sampling variance. The econometrics and statistics literatures show that these estimates depend critically on the design of the sample. The sample for the U.S. Current Population Survey (CPS), which serves as the basis for official poverty, unemployment, and earnings estimates, results from a stratified and clustered design. Unfortunately, analysts are frequently unable to estimate sampling variance for many CPS statistics because the variables marking the strata and clusters are censored from the public-use data files. To compensate for this, the Bureau of Census provides a method to approximate the sampling variance for several, specific point estimates, but no general method exists for estimates that differ from these cases. Similarly there are no corrections at all for regression estimates. This paper proposes a general approximation method that creates synthetic design variables for the estimation of sampling variance. The results from this method compare well with officially reported standard errors. This methodology allows the analyst to estimate sampling variance for a significantly wider class of estimates than previously possible, and therefore increases the usefulness of research resulting from the CPS data files.
The negative-parity spin-1/2 $Λ$ baryon spectrum from lattice QCD and effective theory
Creators: name: Pavao, Rafael
name: Gubler, Philipp
name: Fernandez-Soler, Pedro
name: Nieves, Juan
name: Oka, Makoto
name: Takahashi, Toru T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The spectrum of the negative-parity spin-1/2 $Λ$ baryons is studied using lattice QCD and hadronic effective theory in a unitarized coupled-channel framework. A direct comparison between the two approaches is possible by considering the hadronic effective theory in a finite volume and with hadron masses and mesonic decay constants that correspond to the situation studied on the lattice. Comparing the energy level spectrum and $SU(3)$ flavor decompositions of the individual states, it is found that the lowest two states extracted from lattice QCD can be identified with one of the two $Λ(1405)$-poles and the $Λ(1670)$ resonance. The quark mass dependences of these two lattice QCD levels are in good agreement with their effective theory counterparts. However, as current lattice QCD studies still rely on three-quark operators to generate the physical states, clear signals corresponding to the meson-baryon scattering states, that appear in the finite volume effective theory calculation, are not yet seen.
description: 10 pages, 6 figures
title: Μελέτη της επίδρασης της συσκευασίας σε τροποποιημένες ατμόσφαιρες στην μικροβιολογική αλλοίωση με την μέθοδο NGS και στην ποιότητα των νωπών ιχθύων
title: Next-generation sequencing characterization of skin, gills, and gut bacterial microbiome of farmed gilthead seabream as a function of packaging
titleType: AlternativeTitle
Creators: name: Θωμάς, Απόλλων
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: NGS
MAP
Sea bream
Aquaculture
Fish processing

description: Ολόκληρη η τσιπούρα συσκευάστηκε (α) αερόβια (AIR) σε φελιζόλ από πολυστυρένιο με επαρκή ποσότητα πάγου, με βάση τις συμβατικές πρακτικές και (β) υπό τροποποιημένη ατμόσφαιρα (συγκέντρωσης 60% CO2, 30% N2, 10% O2). Η Next-Generation Sequencing (NGS) του μικροβιακού φορτίου των ψαριών στο δέρμα, τα βράγχια και τα έντερα πραγματοποιήθηκε στα αρχικά δείγματα (συσκευασία, 1 ημέρα μετά τη εξαλίευση) και στο τέλος (τέλος της διάρκειας ζωής). Το τέλος της διάρκειας ζωής αξιολογήθηκε από μια αισθητηριακή αξιολόγηση που πραγματοποιήθηκε από μια ομάδα εμπειρογνωμόνων. Τα αποτελέσματα του NGS έδειξαν σημαντικές διαφορές στον πλούτο και την ποικιλομορφία των οικογενειών μεταξύ των δύο τύπων συσκευασιών (δηλ. AIR και MAP), καθώς και μεταξύ των τύπων συσκευασίας και του αρχικού μικροβίου της τσιπούρας. Οι αναλύσεις NGS των μικροβίων, σε επίπεδο Phylum, έδειξαν ότι τα πιο ανθεκτικά βακτήρια, τόσο στο αρχικό μικρόβιο όσο και στο τέλος της διάρκειας ζωής, ήταν τα Πρωτεοβακτήρια, είτε σε δείγματα AIR είτε MAP. Όσον αφορά τα μικρόβια του δέρματος τσιπούρας, οι αρχικά επικρατούσες οικογένειες ήταν Comamonadaceae, Enterobacteriaceae και Moraxellaceae, ενώ στα έντερα επικράτησαν Comamonadaceae, Anaplasmataceae, Bacillaceae και Enterobacteriaceae. Οι αναλύσεις έδειξαν συσχετισμούς μεταξύ του δέρματος και των εντερικών μικροβίων. Μέχρι το τέλος της διάρκειας ζωής των ψαριών, η σύνθεση του αρχικού μικροβίου τροποποιήθηκε και στους δύο τύπους συσκευασίας (AIR, MAP). Σε γενικές γραμμές, αρκετές από τις αρχικά κυρίαρχες οικογένειες έχουν αντικατασταθεί εν μέρει ή πλήρως από ψυχρότροφες και ψυχρόφιλες οικογένειες όπως Pseudoalteromonadaceae, Psychromonadaceae και Shewanellaceae. Ωστόσο, υπήρχαν οικογένειες, όπως το Comamonadaceae, που παρέμηναν υπό συνθήκες MAP. Μέχρι την 8η ημέρα της ισοθερμικής αποθήκευσης στους 0 ° C τα ψάρια κάτω από MAP παρουσίασαν υψηλότερη βαθμολογία αισθητηρίων από τα αντίστοιχα δείγματα AIR, υποδεικνύοντας καλύτερη διατήρηση των ποιοτικών χαρακτηριστικών των ψαριών υπό MAP.
Fire Risk and the Economics of Sequestering Carbon in Forests
Creators: name: Stainback, G. Andrew
name: Alavalapati, Janaki R.R.
name: Stainback, G. Andrew
name: Alavalapati, Janaki R.R.
Publisher: name: Unknown
Year: 2002
Subjects: Environmental Economics and Policy

description: The impact of fire risk on slash pine (Pinus elliottii) plantations managed for the joint production of carbon and timber benefits was investigated. A Hartman model for determining the optimal rotation age and Land Expectation Value (LEV) for a stand with both carbon and timber benefits was extended to include the risk of fire. Information from this model was then used to determine optimal rotation age, LEV, carbon supply and timber supply as a function of fire risk and the price of carbon. The results indicate that fire risk reduces all of these variables and this reduction is greater for higher carbon prices. These results suggest that landowner's would respond less to a carbon market when the level of fire risk is relatively high.
Sharp estimates for the integrated density of states in Anderson tight-binding models
Creators: name: Desforges, Perceval
name: Mayboroda, Svitlana
name: Zhang, Shiwen
name: David, Guy
name: Arnold, Douglas N.
name: Wang, Wei
name: Filoche, Marcel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 35J10, 65N30

description: Recent work [G. David, M. Filoche, and S. Mayboroda, arXiv:1909.10558[Adv. Math. (to be published)]] has proved the existence of bounds from above and below for the Integrated Density of States (IDOS) of the Schrödinger operator throughout the spectrum, called the landscape law. These bounds involve dimensional constants whose optimal values are yet to be determined. Here, we investigate the accuracy of the landscape law in 1D and 2D tight-binding Anderson models, with binary or uniform random distributions. We show, in particular, that in 1D, the IDOS can be approximated with high accuracy through a single formula involving a remarkably simple multiplicative energy shift. In 2D, the same idea applies but the prefactor has to be changed between the bottom and top parts of the spectrum.
description: 8 pages, 8 figues
Natural products as reservoirs of novel therapeutic agents
Creators: name: Mushtaq, Sadaf
name: Abbasi, Bilal Haider
name: Uzair, Bushra
name: Abbasi, Rashda
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Bioactive
subject: Secondary metabolites
subject: Plants
subject: Animals
subject: Marine organisms
subject: Microbes
subject: 610

description: Since ancient times, natural products from plants, animals, microbial and marine sources have been exploited for treatment of several diseases. The knowledge of our ancestors is the base of modern drug discovery process. However, due to the presence of extensive biodiversity in natural sources, the percentage of secondary metabolites screened for bioactivity is low. This review aims to provide a brief overview of historically significant natural therapeutic agents along with some current potential drug candidates. It will also provide an insight into pros and cons of natural product discovery and how development of recent approaches has answered the challenges associated with it.
description: EXCLI Journal;Vol. 17 2018