cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Enhanced production of total flavones from Inonotus baumii by multiple strategies
Creators: name: Li, Hui
name: Jiao, Xue
name: Zhou, Wanlong
name: Sun, Yajie
name: Liu, Wei
name: Lin, Weiping
name: Liu, Ao
name: Song, Aihuan
name: Zhu, Hu
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: As one kind of important secondary metabolites produced by Inonotus baumii, flavones can be applied in food, medicine, and other industries due to their biological activities such as antioxidant, anticancer, and antibacterial activity. To enhance total flavone production in submerged fermentation of I. baumii, three different strategies, optimization of fermentation parameters by statistical designs including Plackett–Burman design and response surface methodology, addition of precursors and elicitors, and two-phase culture, were used. The production of total flavones (PTF) reached 1532.83 mg/L when the optimized medium was used. All precursors and elicitors can increase the PTF. The maximum PTF (2184.06 mg/L, up to 1.57-fold) was obtained with the addition of both AgNO3 and glutathione in fermentation media. Interestingly, when 0.5% (w/v) DM130 macroporous resin as adsorbent was added to fermentation broth on day 4 of culture, the highest production reached 2407.79 mg/L with this two-phase culture strategy. These methods can be further applied to large-scale industrial production and broaden the application of flavones.
Πολυμεσική επεξεργασία ομιλίας
Creators: name: Αλμπανίδης, Γεώργιος Λ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Κατάτμηση φθόγγων με πληροφοριακά κριτήρια
Γενικευμένη Γάμμα κατανομή
Εύρωστη στατιστική επιλογή μοντέλου
Αυτόματη προσκομιδή ιστοσελίδων
Phonemic segmentation with information criteria
Generalised Gamma distribution
Robust statistical model selection
Latent semantic indexing

description: Αντικείμενο της διατριβής είναι η πολυμεσική επεξεργασία ομιλίας, Στην έρευνα που αφορά την κατάτμηση φθόγγων μελετήθηκε ο αλγόριθμος DISTBIC και αναπτύχθηκαν παραλλαγές του που βασίζονται σε διορθώσεις μικρού μεγέθους δείγματος, αντικατάσταση του Μπεϋζιανού πληροφοριακού κριτηρίου με εναλλακτικά κριτήρια, μοντελοποίηση των χαρακτηριστικών ομιλίας με τη γενικευμένη Γάμμα κατανομή, χρήση μετασχηματισμών και εφαρμογή εύρωστης στατιστικής στην επιλογή μοντέλου. Οι τροποποιήσεις αυτές αποτιμήθηκαν στις φωνητικές βάσεις ΝΤΙΜΙΤ και M2VTS όπου επιτεύχθηκε βελτίωση στους ρυθμούς σφαλμάτων σε σχέση με τη βασική μέθοδο. Στην επεξεργασία γραπτού λόγου έγινε έρευνα στην εστιασμένη προσκομιδή ιστοσελίδων. Προτάθηκε μια στρατηγική αναζήτησης με επιλογή βέλτιστου κόμβου που βασίζεται στη μέθοδο της λανθάνουσας σημασιολογικής δειτκοδότησης και συνδυάζει λεκτικό περιεχόμενο με πληροφορία υπερσυνδέσμων. Πειράματα στις βάσεις WebKB και Cora έδειξαν σημαντική βελτίωση στους ρυθμούς ανάκλησης και ακρίβειας σε σχέση με γνωστές τεχνικές ανάκτησης πληροφορίας. Προτάθηκε μία μέθοδος πυ σητρίζεται στα διακριτά κρυμμένα μοντέλα markov και επιτρέπει τη μοντελοποίηση ακολουθιών χαρακτήρων. Πειράματα που εκτελέστηκαν σε κείμενα γραμμένα σε πέντε ευρωπαϊκές γλώσσες έδειξαν υψηλούς ρυθμούς ταυτοποίησης
description: The subject of this thesis is multimodal speech processing. The research in phonemic segmentation is focused on the study of the DISTBIC algorithm where several variations were developed; these are based on small sample corrections, replacement of the Bayesian information criterion with alternative criteria, modelling of the speech features with the generalised Gamma distribution, use of transformations and robust statistics in model selection. These modifications were evaluated in the NTIMIT and M2VTS speech databases, where improvement in error rates was attained with repsect to the baseline method. Regarding text processing, research was done in focused web crawling. A best first search strategy with hyperlink information was proposed. Experiments in the WebKB and Cora databases showed significant improvement in the recall and precision rates yielded with respect to well known information retrieval techniques. last, research was done in the text language identification. The discrete hidden Markov models based mehtod which was proposed yielded high identification rates in five European languages
A hierarchical software development environment for performance oriented parallel programming
Creators: name: Feldcamp, David A.
Publisher: name: University of British Columbia
Year: 2008

description: The future of high performance computing lies in massively parallel computers. In order to create software to utilize this ever more powerful and complex hardware, software designers must reconcile the desire to provide simplifying abstractions with performance requirements. This thesis examines one approach to addressing this problem. It has been observed that most parallel programs are written so that they possess the structure of one of a relatively small number of paradigms which describe the essence of a virtual machine. It is well known that better performance will be achieved when there is a close match between the structure of a virtual machine and the algorithms of a program built using the machine. We have proposed the skeleton-template-module (STM) as a parameterized, partially implemented virtual machine, corresponding to a particular paradigm. An STM is implemented by an expert system programmer and serves to hide the internal complexity of the virtual machine from application programmers who are only presented with an interface to the missing components and parameters. To be truly useful a construct such as an STM must be supported by and fully integrated into a viable programming environment. Such a system must support both the construction of STMs and their use to create applications as part of a general programming framework. However, the lessons of existing sequential and parallel programming systems must not be forgotten. "Ease of use" must remain a high priority. Reuse must be facilitated and encouraged wherever possible. Scalability in its several forms must exist. Finally, the system must also recognize that programming is but one task in the development of parallel programs and so must support the existence and cooperative functioning of a variety of tools. Of these tools, the most important from the developer's point of view is the user interface which provides both support for constructing programs and interacting with the rest of the environment. We have designed and built such an interface and environment (Parsec -- the Parallel System for Efficient Computation) along with prototype mapping and loading tools as a follow-on to our original TIPS environment. The system utilizes the process-port-channel model of parallel program description and supports these primitives with a graphical interface. This interface provides arbitrary hierachical organization within a program by the use of STMs and logical subgraphs within STMs. In addition, objects such as module parameters, process types, process groups, and parameterized graphs are provided to both support STMs as well as meet the objectives of "ease of use," reuse, and scalability.
Dust in the central parsecs of unobscured AGN: more challenges to the torus
Creators: name: Prieto, Almudena
name: Nadolny, Jakub
name: Fernández-Ontiveros, Juan A.
name: Mezcua, Mar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A parsec-scale dusty torus is thought to be the cause of Active Galactic Nuclei (AGN) dichotomy in the 1/2 types, narrow/broad emission lines. In a previous work, on the basis of parsec-scale resolution infrared / optical dust maps it was found that dust filaments, few parsecs wide, several hundred parsecs long, were ubiquitous features crossing the centre of type 2 AGN, their optical thickness being sufficient to fully obscure the optical nucleus. This work presents the complementary view for type 1 and intermediate-type AGN. The same type of narrow, collimated, dust filaments are equally found at the centre of these AGN. The difference now resides in their location with respect to the nucleus, next to it but not crossing it, as it is the case in type 2, and their reduced optical thickness towards the centre, $A_V \lesssim 1.5 \rm{mag}$, insufficient to obscure at UV nucleus wavelengths. It is concluded that large scale, hundred pc to kpc long, dust filaments and lanes, reminiscent of those seen in the Milky Way, are a common ingredient to the central parsec of galaxies. Their optical thickness changes along their structure, in type 2 reaching optical depths high enough to obscure the nucleus in full. Their location with respect to the nucleus and increasing gradient in optical depth towards the centre could naturally lead to the canonical type 1/2 AGN classification, making these filaments to play the role of the torus. Dust filaments and lanes show equivalent morphologies in molecular gas. Available gas kinematic indicates mass inflows at rates $ < ~ 1 M\odot~ yr^{-1}$.
description: 20 pages, 14 figures, accepted in MNRAS (07-Jun-2021)
Influence of mixing the low-valent transition metal atoms (Y,Y$^*$=Cr,Mn,Fe) on the properties of the quaternary Co$_2$[Y$_{1-x}$Y$^*_x$]Z (Z=Al,Ga,Si,Ge,Sn) Heusler compounds
Creators: name: Ozdogan, K.
name: Aktas, B.
name: Galanakis, I.
name: Sasioglu, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We complement our study on the doping and disorder in Co$_2$MnZ compounds [I. Galanakis \textit{et al.}, Appl. Phys. Lett. \textbf{89}, 042502 (2006) and K. Özdogan \textit{et al.}, Phys. Rev. B \textbf{74}, (2006)] to cover also the quaterarny Co$_2$[Y$_{1-x}$Y$^*_x$]Z compounds with the lower-valent transition metals Y,Y$^*$ being Cr, Mn or Fe and the sp atom Z being one of Al, Ga, Si, Ge, Sn. This study gives a global overview of the magnetic and electronic properties of these compounds since we vary both Y and Z elements. Our results suggest that for realistic applications the most appropriate compounds are the ones belonging to the families Co$_2$[Mn$_{1-x}$Cr$_x$]Z with $x>0.5$ irrespectively of the nature of the $sp$ atoms since they combine high values of majority DOS at the Fermi level due to the presence of Cr, and half-metallicity with large band-gaps. On the other hand the presence of Fe lowers considerably the majority density of states at the Fermi level and when combined with an element belonging to the Si-column, it even can destroy half-metallicity.
Chiral Equivariant Cohomology II
Creators: name: Lian, Bong H.
name: Linshaw, Andrew R.
name: Song, Bailin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: This is the second in a series of papers on a new equivariant cohomology that takes values in a vertex algebra. In an earlier paper, the first two authors gave a construction of the cohomology functor on the category of O(sg) algebras. The new cohomology theory can be viewed as a kind of "chiralization'' of the classical equivariant cohomology, the latter being defined on the category of G^* algebras a la H. Cartan. In this paper, we further develop the chiral theory by first extending it to allow a much larger class of algebras which we call sg[t] algebras. In the geometrical setting, our principal example of an O(sg) algebra is the chiral de Rham complex Q(M) of a G manifold M. There is an interesting subalgebra of Q(M) which does not admit a full O(sg) algebra structure but retains the structure of an sg[t] algebra, enough for us to define its chiral equivariant cohomology. The latter then turns out to have many surprising features that allows us to delineate a number of interesting geometric aspects of the G manifold M, sometimes in ways that are quite different from the classical theory.
description: A few typos corrected, final version
Promoted and Developed to Physical Capability of Preschool Children as Aged 3 Years' Old in First Child Development Center
Creators: name: Amphorn Prajothanta
Publisher: name: DR.KEN Institute of Academic Development and Promotion.
Year: 2021
Subjects: Promoted and Developed
Physical Capability
Preschool Children
Aged 3 years' old
First Child Development Center

description: International Journal of Sociologies and Anthropologies Science Reviews (IJSASR), 1, 1, 7_17
On TESTGEN+, an environment for protocal test generation and validation
Creators: name: Zhou, Jingsong
Publisher: name: University of British Columbia
Year: 2008

description: This thesis addresses a significant tool, TESTGEN+, for protocol test generation and validation. TESTGEN+ consists of two basic components: TESTGEN for protocol test generation, and TESTVAL for test validation. TESTGEN, is a protocol TEST Generation and Selection Environment for conformance testing which has been developed at the University of British Columbia. This environment is menu driven and unique in that it is effective, general, flexible and portable. It is based on an intermediate extended transition system formalism and directly supports ASN.1 and Estelle. The test generation method adopted in the environment integrates both the control flow testing and the data flow testing with parameter variation. Furthermore, test generation and selection are integrated and guided by user-defined test suite generation constraints and parameter variation constraints. The environment will serve as a useful testbed for experimenting with test generation and selection as well as being a productive system for generating useful test suites for real-life protocols. TESTVAL is a test suite validator, which is based on a trace analyzer, and which allows testcases to be validated against their protocol specification. Using TESTVAL, the validation of the test suite for the LAPB protocol defined in the ISO 9646 standard document has been performed and the validation result is presented in the thesis.
QSOs in the combined SDSS/GALEX database
Creators: name: Hutchings, J. B.
name: Bianchi, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss selection of QSO candidates from the combined SDSS and GALEX catalogues. We discuss properties of QSOs within the combined sample, and note uncertainties in number counts and completeness, compared with other SDSS-based samples. We discuss colour and other properties with redshift within the sample and the SEDs for subsets. We estimate the numbers of faint QSOs that are classified as extended objects in the SDSS, and consequent uncertainties that follow.
description: To appear in PASP
Μελέτη προβλημάτων ομαδοποίησης δικτυακών σταθμών και χρηστών
Creators: name: Πετρίδου, Σοφία Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Χρονοδρόμηση
Χρόνος πρόσβασης
Ομαδοποίηση
MAC protocols
Scheduling
Web users
Access time
Clustering

description: O βασικός κορμός της διατριβής εστιάζει στην ανάπτυξη πρωτοκόλλων ελέγχου πρόσβασης στο μέσο οπτικών δικτύων με στόχο την κατασκευή αποτελεσματικών προγραμμάτων χρονοδρομολόγησης των αιτημάτων μετάδοσης των σταθμών και ως εκτούτου την αύξηση της απόδοσης του δικτύου. Οι τεχνικές που προτείνονται υλοποιούνται με τη μορφή αλγορίθμων χρονοδρομολόγησης και εφαρμόζονται, σε δίκτυα με μεταβλητό μεταδότη και μεταβλητό αποδέκτη. Κοινός παρανομαστής και καινοτομία των προτεινόμενων πρωτοκόλλων είναι η εφαρμογή αλγορίθμων ομαδοποίησης των δικτυακών σταθμών. Στο τελευταίο τμήμα της διατριβής μελετώνται αλγόριθμοι ομαδοποίησης των χρηστών του Παγκόσμιου Ιστού. Καινοτόμο στοιχείο των προτεινόμενων αλγορίθμων είναι η σύσταση ομάδων με κριτήριο όχι μόνο τις ιστοσελίδες που επιλέγουν να επισκευφθούν αλλά και τη χρονική στιγμή πρόσβασής τους σε αυτές. Συνοψίζοντας, η συνεισφορά της διατριβής εντοπίζεται κατά κύριο λόγο στο επίπεδο ελέγχου πρόσβασης στο μέσα με την ομαδοποίηση των δικτυακών σταθμών και επεκτείνεται στο επίπεδο εφαρμογών με την ομαδοποίηση των δικτυακών χρηστών
description: The main part of the thesis presents novel MAC protocols for broadcast-and-select WDM stoir networks which aim at producing effective scheduling chemes taking into acconunt the specific demands of each node. The proposed proticols are based on the use of clustering techniques. Extensive simulation results are presented which indicate that all the proposed protocols lead to a significantly higher throughput-delay performance compared to traditional scheduling algorithms. The final part of the thesis focuses on the application layer and studies the clustering problem on the algorithms proposed define clusters with users that show similar visiting behaviour at the same time period. The fact that there are numerous Web applications in which time is critical means that time is also a critical parameter in Web users' clustering process
Geometric Tachyon to Universal Open String Tachyon
Creators: name: Sen, Ashoke
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A system of k Neveu-Schwarz (NS) 5-branes of type II string theory with one transverse direction compactified on a circle admits various unstable D-brane systems, - some with geometric instability arising out of being placed at a point of unstable equilibrium in space and some with the usual open string tachyonic instability but no geometric instability. We discuss the effect of NS 5-branes on the descent relations among these branes and their physical interpretation in the T-dual ALF spaces. We argue that if the tachyon potential controlling these descent relations obeys certain conditions, then in certain region in the parameter space labelling the background the two types of unstable branes become identical via a second order phase transition, with the geometric tachyon in one system getting mapped to the open string tachyon of the other system. This would provide a geometric description of the tachyonic instability of the usual non-BPS Dp-brane in ten dimensional flat space-time.
description: LaTeX file, 30 pages
Evaluating Pricing Strategy Using e-Commerce Data: Evidence and Estimation Challenges
Creators: name: Ghose, Anindya
name: Sundararajan, Arun
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: General Finance (q-fin.GN)
subject: FOS: Mathematics
subject: FOS: Economics and business

description: As Internet-based commerce becomes increasingly widespread, large data sets about the demand for and pricing of a wide variety of products become available. These present exciting new opportunities for empirical economic and business research, but also raise new statistical issues and challenges. In this article, we summarize research that aims to assess the optimality of price discrimination in the software industry using a large e-commerce panel data set gathered from Amazon.com. We describe the key parameters that relate to demand and cost that must be reliably estimated to accomplish this research successfully, and we outline our approach to estimating these parameters. This includes a method for ``reverse engineering'' actual demand levels from the sales ranks reported by Amazon, and approaches to estimating demand elasticity, variable costs and the optimality of pricing choices directly from publicly available e-commerce data. Our analysis raises many new challenges to the reliable statistical analysis of e-commerce data and we conclude with a brief summary of some salient ones.
description: Published at http://dx.doi.org/10.1214/088342306000000187 in the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Cavity cooling of internal molecular motion
Creators: name: Morigi, Giovanna
name: Pinkse, Pepijn W. H.
name: Kowalewski, Markus
name: de Vivie-Riedle, Regina
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We predict that it is possible to cool rotational, vibrational and translational degrees of freedom of molecules by coupling a molecular dipole transition to an optical cavity. The dynamics is numerically simulated for a realistic set of experimental parameters using OH molecules. The results show that the translational motion is cooled to few $μ$K and the internal state is prepared in one of the two ground states of the two decoupled rotational ladders in few seconds. Shorter cooling times are expected for molecules with larger polarizability.
description: 4 pages, 4 figures. To appear in Physical Review Letters
Spin-orbit interaction in symmetric wells with two subbands
Creators: name: Bernardes, Esmerindo S.
name: Schliemann, John
name: Lee, Minchul
name: Egues, J. Carlos
name: Loss, Daniel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the spin-orbit (s-o) interaction in two-dimensional electron gases (2DEGs) in quantum wells with two subbands. From the $8\times 8$ Kane model, we derive a new inter-subband-induced s-o term which resembles the functional form of the Rashba s-o -- but is non-zero even in \emph{symmetric} structures. This follows from the distinct parity of the confined states (even/odd) which obliterates the need for asymmetric potentials. We self-consistently calculate the new s-o coupling strength for realistic wells and find it comparable to the usual Rashba constant. Our new s-o term gives rise to a non-zero ballistic spin-Hall conductivity, which changes sign as a function of the Fermi energy ($ε_F$), and can induce an unusual \emph{zitterbewegung} with cycloidal trajectories \textit{without} magnetic fields.
description: v2: 4 two-column pages, 3 figures (added spin Hall conductivity and self-consistent calculation)
An asymmetric dust ring around a very low mass star ZZ Tau IRS
Creators: name: Hashimoto, Jun
name: Dong, Ruobing
name: Muto, Takayuki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present Atacama Large Millimeter/submillimeter Array (ALMA) gas and dust observations at band 7 (339~GHz: 0.89~mm) of the protoplanetary disk around a very low mass star ZZ~Tau~IRS with a spatial resolution of 0\farcs25. The $^{12}$CO~$J=3\rightarrow2$ position--velocity diagram suggests a dynamical mass of ZZ~Tau~IRS of $\sim$0.1--0.3~$M_{\sun}$. The disk has a total flux density of 273.9 mJy, corresponding to an estimated mass of 24--50~$M_\oplus$ in dust. The dust emission map shows a ring at $r=$ 58~au and an azimuthal asymmetry at $r=$ \jh{45}~au with a position angle of 135\degr. The properties of the asymmetry, including radial width, aspect ratio, contrast, and contribution to the total flux, were found to be similar to the asymmetries around intermediate mass stars ($\sim$2~$M_{\sun}$) such as MWC~758 and IRS~48. This implies that the asymmetry in the ZZ~Tau~IRS disk shares a similar origin with others, despite the star being $\sim$10 times less massive. Our observations also suggest that the inner and outer parts of the disk may be misaligned. Overall, the ZZ~Tau~IRS disk shows evidence of giant planet formation at $\sim$10 au scale at a few Myr. If confirmed, it will challenge existing core accretion models, in which such planets have been predicted to be extremely hard to form around very low mass stars.
description: 19 pages, 7 figures, accepted in AJ
Re-transcription of Goddard notebook texts
Creators: name: Parker, Verdena
name: Lee-Wynant, Tyler
name: Spence, Justin
name: Yu, Xuying Yuki
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: hup

description: Audio file VP-100319-02: Re-transcription and translation of texts transcribed by P.E. Goddard, American Philosophical Society Na20a.2, notebook #10, pp. 56-67.
The Need to Develop Knowledge Affected to Efficiency of Accounting of Personnel under the Finance Division, Local Administration Organization
Creators: name: Kunteera Arsasri
Publisher: name: DR.KEN Institute of Academic Development and Promotion.
Year: 2021
Subjects: Knowledge Development Needs
Accounting Efficiency
Subdistrict Administration Organization

description: International Journal of Sociologies and Anthropologies Science Reviews (IJSASR), 1, 1, 29_42
CP violation in charged Higgs decays in the MSSM
Creators: name: Christova, E.
name: Eberl, H.
name: Ginina, E.
name: Majerotto, W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the MSSM with complex parameters loop corrections to the decays $H^+ \to t \bar{b}$ and $H^- \to \bar{t} b$ with $t \to b W$ and $W \to l ν$ lead to CP-violating asymmetries: a decay rate asymmetry, a forward-backward asymmetry and an energy asymmetry. We derive explicit formulas for them and perform a detailed numerical analysis. We study the dependence on the parameters and the phases involved. In particular, the influence of the running Yukawa coupling is taken into account. The decay rate asymmetry can go up to 25%, the forward-backward and the energy asymmetry up to 10%.
description: 18 pages, 13 postscript figures, JHEP style, Feynman graphs replaced, one reference added
The ACS LCID Project: RR Lyrae stars as tracers of old population gradients in the isolated dwarf spheroidal galaxy Tucana
Creators: name: Bernard, Edouard J.
name: Gallart, Carme
name: Monelli, Matteo
name: Aparicio, Antonio
name: Cassisi, Santi
name: Skillman, Evan D.
name: Stetson, Peter B.
name: Cole, Andrew A.
name: Drozdovsky, Igor
name: Hidalgo, Sebastian L.
name: Mateo, Mario
name: Tolstoy, Eline
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a study of the radial distribution of RR Lyrae variables, which present a range of photometric and pulsational properties, in the dwarf spheroidal galaxy Tucana. We find that the fainter RR Lyrae stars, having a shorter period, are more centrally concentrated than the more luminous, longer period RR Lyrae variables. Through comparison with the predictions of theoretical models of stellar evolution and stellar pulsation, we interpret the fainter RR Lyrae stars as a more metal-rich subsample. In addition, we show that they must be older than about 10 Gyr. Therefore, the metallicity gradient must have appeared very early on in the history of this galaxy.
description: 5 pages, 5 figures in emulateapj style. Submitted to ApJ Letters
Visualization of multivariate data using preattentive processing
Creators: name: Healey, Christopher G.
Publisher: name: University of British Columbia
Year: 2008

description: A new method for designing multivariate data visualization tools is presented. Multivariate data visualization involves representation of data elements with multiple dimensions in a low dimensional enviroment, such as a computer screen or printed media. Our tools are designed to allow users to perform simple tasks like estimation, target detection, and detection of data boundaries rapidly and accurately. These techniques could be used for large datasets where more traditional techniques do not work well or for time-sensitive applications that require rapid understanding and informative data displays. Our design technique is based on principles arising in an area of cognitive psychology called preattentive processing. Preattentive processing studies visual features that are “preattentively” detected by the human visual system. Viewers do not have to focus their attention on particular regions of an image to determine whether elements with certain features are present or absent. Examples of preattentive features include colour, orientation, intensity, size, shape, curvature, and line length. Because this ability is part of the low-level human visual system, detection is performed very rapidly, almost certainly using a large degree of parallelism. In this thesis we investigate the hypothesis that these features can be used to effectively represent multivariate data elements. Visualization tools that use this technique will allow users to perform rapid and accurate visual processing of their data displays. We chose to investigate two known preattentive features, colour and orientation. The particular question investigated is whether rapid and accurate estimation is possible using these preattentive features. Experiments that simulated displays using our preattentive visualization tool were run. The experiments used data similar to that which occurred in a set of salmon migration studies. This choice was made to investigate the likelihood of our techniques being relevant to real-world problems. Analysis of the results of the experiments showed that rapid and accurate estimation is possible with both colour and orientation. A second question, whether interaction occurs between the two features, was answered negatively. Additional information about exposure durations and feature and data interaction were also discovered.
Additional file 1 of Hepatitis C seroprevalence among people living with HIV/AIDS and pregnant women in four provinces in Cambodia: an integrated bio-behavioral survey
Creators: name: Pheng, Phearavin
name: Meyer, Laurence
name: Ségéral, Olivier
name: Chea, Phalla
name: Yi, Siyan
name: Tuot, Sovannary
name: Kaldor, John M.
name: Saphonn, Vonthanak
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences

description: Additional file 1: Table S1: seroprevalence and viremic prevalence per sex and per age category (n = 935), Cambodia, 2016.
Μελέτη της β αλυσίδας του υποδοχέα αντιγόνου των Τ λεμφοκυττάρων σε ασθενείς με πολλαπλή σκλήρυνση
Creators: name: Τσαβδαρίδου-Φώλα, Βασιλική Π.
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Σωματικός ανασυνδυασμός
T κυτταρικό ρεπερτόριο
Somatic recombination
T cell repertoire

description: Σκοπός της παρούσας εργασίας ήταν ο προσδιορισμός της έκφρασης των TCR Vβ οικογενειών του υποδοχέα TcR στα CD4+Τ λεμφοκύτταρα του περιφερικού αίματος ασθενών με πολλαπλή σκλήρυνση κατά την πρωτοδιάγνωση και ασθενών με μορφή "εξάρσεων και υφέσεων" της νόσου
description: Τhe aim of this study is the determination of expression of TCR V‚ families of TCR in CD4+ and CD8+ T lymphocytes of peripheral whole blood in patients with multiple sclerosis at the time of diagnosis and in patients with “relapsing-remitting” form of the disease
Spin state and moment of inertia of Venus
Creators: name: Margot, Jean-Luc
name: Campbell, Donald B.
name: Giorgini, Jon D.
name: Jao, Joseph S.
name: Snedeker, Lawrence G.
name: Ghigo, Frank D.
name: Bonsall, Amber
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Fundamental properties of the planet Venus, such as its internal mass distribution and variations in length of day, have remained unknown. We used Earth-based observations of radar speckles tied to the rotation of Venus obtained in 2006-2020 to measure its spin axis orientation, spin precession rate, moment of inertia, and length-of-day variations. Venus is tilted by 2.6392 $\pm$ 0.0008 degrees ($1σ$) with respect to its orbital plane. The spin axis precesses at a rate of 44.58 $\pm$ 3.3 arcseconds per year ($1σ$), which gives a normalized moment of inertia of 0.337 $\pm$ 0.024 and yields a rough estimate of the size of the core. The average sidereal day on Venus in the 2006-2020 interval is 243.0226 $\pm$ 0.0013 Earth days ($1σ$). The spin period of the solid planet exhibits variations of 61 ppm ($\sim$20 minutes) with a possible diurnal or semidiurnal forcing. The length-of-day variations imply that changes in atmospheric angular momentum of at least $\sim$4% are transferred to the solid planet.
description: 20 pages, 7 figures, supplementary information. Submitted to Nature Astronomy on October 14, 2020
Measurement of the Relative Branching Fractions of Bbar --> D/D*/D** l^- anti-nu_l Decays in Events with a Fully Reconstructed B Meson
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We determine the relative branching fractions of semileptonic B decays to charmed final states. The measurement is performed on the recoil from a fully reconstructed B meson in a sample of 362 million BBbar pairs collected at the Upsilon(4S) resonance with the BaBar detector. A simultaneous fit to a set of discriminating variables is performed on a sample of Bbar --> D X l^- anti-nu_l decays to determine the contributions from the different channels. We measure Gamma(B- --> D l^- anti-nu_l)/Gamma (B- --> D X l^- anti-nu_l)= 0.227 +/- 0.014 +/- 0.016, Gamma(B- --> D* l^- anti-nu_l)/Gamma (B- --> D X l^- anti-nu_l)= 0.582 +/- 0.018 +/- 0.030 and Gamma(B- --> D** l^- anti-nu_l)/Gamma (B- --> D X l^- anti-nu_l)= 0.191 +/- 0.013 +/- 0.019 for the charged B sample, and Gamma(B0bar --> D l^- anti-nu_l)/Gamma (B0bar --> D X l^- anti-nu_l)= 0.215 +/- 0.016 +/- 0.013, Gamma(B0bar --> D* l^- anti-nu_l)/Gamma (B0bar --> D X l^- anti-nu_l)= 0.537 +/- 0.031 +/- 0.036 and Gamma(B0bar --> D** l^- anti-nu_l)/Gamma (B0bar --> D X l^- anti-nu_l)= 0.248 +/- 0.032 +/- 0.030 for the neutral B sample, where uncertainties are statistical and systematic, respectively.
description: 8 pages, 1 postscript figure, submitted to PRD-RC
Supplementary document for Lensless masked imaging with self-calibrated phase retrieval - 6433630.pdf
Creators: name: Guo, Cheng
name: Zheng, Shenghao
name: Ding, Zhihui
name: Jiang, Rui
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Derviation, numerical simulation, ablation studies, parameter tuning, and extra experimental results
Lexikografische Kalibrierungsstrategie für eine effiziente Parameterschätzung in hochaufgelösten Niederschlag-Abfluss-Modellen
Creators: name: Gelleszun, Marlene
Publisher: name: Bundesanstalt für Gewässerkunde, Koblenz
Year: 2015
Subjects: subject: Water resources research

description: Hydrologie und Wasserbewirtschaftung / BfG – Jahrgang: 59.2015,3 - ISSN 1439-1783
Symmetry of arbitrary layer rolled-up nanotubes
Creators: name: Damnjanovic, M.
name: Nikolic, B.
name: Milosevic, I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Rolling up of a layer with arbitrary lattice gives nanotube with very reach symmetry, described by a line group which is found for arbitrary diperiodic group of the layer and chiral vector. Helical axis and pure rotations are always present, while the mirror and glide planes appear only for specific chiral vectors in rhombic and rectangular lattices. Nanotubes are not translationally periodical unless layer cell satisfies very specific conditions. Physical consequences, including incommensurability of carbon nanotubes, are discussed.
description: 5 pages, 1 table, 1 figure
Entanglement criteria based on local uncertainty relations are strictly stronger than the computable cross norm criterion
Creators: name: Gühne, Otfried
name: Mechler, Matyas
name: Toth, Geza
name: Adam, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that any state which violates the computable cross norm (or realignment) criterion for separability also violates the separability criterion of the local uncertainty relations. The converse is not true. The local uncertainty relations provide a straightforward construction of nonlinear entanglement witnesses for the cross norm criterion.
description: 4 pages, no figure, v2: small changes
Gravitational Gauge Mediation
Creators: name: Kitano, Ryuichiro
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is often the case that the naive introduction of the messenger sector to supersymmetry breaking models causes restoration of supersymmetry. We discuss a possibility of stabilizing the supersymmetry breaking vacuum by gravitational interaction.
description: 10 pages, 1 figure, version to appear in Physics Letters B
The Ethics of Confucius in the Korean Series, Dong Yi (The Throne)
Creators: name: Siriporn Khamlea
Publisher: name: DR.KEN Institute of Academic Development and Promotion.
Year: 2021
Subjects: Confucian Ethics
Series
Dong Yi

description: International Journal of Sociologies and Anthropologies Science Reviews (IJSASR), 1, 1, 43_48
Διαισθητική ασαφής επεξεργασία εικόνας
Creators: name: Βλάχος, Ιωάννης Κ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Διαισθητικό ασαφές σύνολο
Intuitionistic fuzzy set

description: Στόχος της παρούσας διατριβής είναι να εισάγει ένα νέο ευέλικτο μαθηματικό πλαίσιο για την επεξεργασία εικόνων, το οποίο να βασίζεται στη θεωρία των διαισθητικών ασαφών συνόλων. Για το σκοπό αυτό, επιλύουμε το πρόβλημα της ανάλυσης και σύνθεσης μίας ψηφιακής εικόνας στις και από τις διαισθητικές ασαφείς της συνιστώσες, προτείνοντας τόσο αναλυτικές, όσο και ευρηστικές μεθόδους. Η μαθηματική αναπαράσταση των εικόνων με χρήση διαισθητικών ασαφών συνόλων επιτυγχάνεται εκμεταλλευόμενοι την εγγενή ασάφεια συνόλων επεκτείνεται με την εισαγωγή νέων εννοιών και ορισμών, έτσι ώστε να παραχθούν τα απαραίτητα εργαλεία για την προτεινόμενη προσέγγιση στην επεξεργασία εικόνας. Η αποτελεσματικότητα της διαισθητικής ασαφούς αρχιτεκτονικής επιδεικνύεται στα πεδία της ενίσχυσης αντίθεσης, της κατάτμησης εικόνων και της ανίχνευσης ακμών, χρησιμοποιώντας εικόνες προερχόμενες από διαφορετικές μεταξύ τους απεικονιστικές οντότητες, συμπεριλαμβανομένων και ιατρικών εικόνων. Τα αποτελέσματα που παράγονται από την πειραματική αξιολόγηση του προτεινόμενου πλαισίου υπερτερούν αυτών που λαμβάνονται από τα α΄σαφή ανάλογα των μεθόδων, καθώς και από τις συνήθεις μεθόδους επεξεργασίας. Επιπλέον, παρουσιάζονται επεκτάσεις των διαφόρων προσεγγίσεων σε έγχρωμες εικόνες. Τέλος, εισάγεται η έννοια των μιγαδικών διαισθητικών ασαφών συνόλων, η οποία επιτρέπει τη μελλοντική επέκταση των προτεινόμενων τεχνικών για την επεξεργασία εικόνων στο πεδίο της συχνότητας
description: The purpose of this doctoral dissertation is to establish a flexible mathematical framework for image processing, based on the concepts ofintuitionistic fuzzy sets theory. In view of performing this task, theproblem of analyzing and synthesizing a digital image to and from itsintuitionistic fuzzy components is addressed and analytic, as well asheuristic methods are presented. The modeling is carried out by exploitingand interpreting the inherent ambiguity and vagueness, carried by the image itself, in terms of elements of intuitionistic fuzzy sets. In order to provide the necessary tools for the proposed image processing architecture, the theory of intuitionistic fuzzy sets is expanded by introducing novel theoretical concepts and definitions. The efficiency of the intuitionistic fuzzy framework is demonstrated in the context of contrast enhancement, image segmentation and edge detection, by considering images from diverse imaging modalities, including medical images. Experimental evaluation of the proposed architecture yields satisfactory and promising results compared to their fuzzy counterparts,as well as to traditional methods. Additionally, extensions to color images are also provided. Finally, the notion of complex intuitionistic fuzzy sets is introduced that allows for future application of the developed techniques to images in the frequency domain
Evaluating geological and environmental data for urban expansion using satellite images and GIS: An application on Hurghada area, Egypt
Creators: name: Kamh, Samir Zaky
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Αστική επέκταση
Τεχνικές προσδιορισμού μεταβολής
Σχεδιασμό χρήσης γης
Urban expansion
Change detection techniques
Land use planning
Flash flood

description: Αναμφισβήτητα, ο σχεδιασμός χρήσης γης που βασίζεται στην επιστήμη της Γεωλογίας μπορεί να ελαττώσει σημαντικά το κόστος ανάπτυξης και τους κινδύνους σπάταλης επένδυσης και παραγωγής. Μπορεί επίσης να συμβάλει στην βελτίωση του αστικού περιβάλλοντος μέσω της επίτευξης των στόχων διατήρησης του. Αυτό μπορεί να επιτευχθεί αν υπάρξει η κατάλληλη χρήση των πληροφοριών της Γεωλογίας στην επιλογή της θέσης και στάδια σχεδιασμού καθώς επίσης και επί τόπου έρευνα Αυτό απαιτεί μια καλή κατανόηση των εδαφικών συνθηκών (π.χ.γεωλογία, τοπογραφία, γεωλογική επικινδυνότητα κτλ.), καλές πηγές πληροφοριών (π.χ. χάρτες, δορυφορικά και δημογραφικά στοιχεία κτλ.) καθώς και τεχνολογίες (π.χ. Τηλεπισκόπηση, GIS) για την επεξεργασία και αξιοποίηση αυτών των στοιχείων. Σ' αυτό το πλαίσιο, η παρούσα μελέτη αποτελεί μια προσπάθεια αξιολόγησης των γεω-περιβαλλοντικών και κοινωνικο-οικονομικών στοιχείων που σχετίζονται με την αστική ανάπτυξη και την επέκταση της περιοχής της Ουργκάντα, με τη βοήθεια των τεχνολογιών Τηλεπισκόπησης και GIS. Η αξιολόγηση αυτή λαμβάνει υπόψη βασικά χαρακτηριστικά του υπεδάφους (λιθολογίεςκαι δομές), τοπογραφία, γεωλογική επικινδυνότητα, συνθήκες υπογείων υδάτων, τεχνικά στοιχεία αλλά και την παρακολούθηση των αλλαγών στη χρήση της αστικής γης, που βοηθούν στον εντοπισμό της υποψήφιας περιοχής για την μελλοντική αστική επέκταση
description: Undoubtedly, the land use planning based on Earth-science information cansignificantly reduce the costs of development and the risks of losses of investment and productivity due to damage of properties and loss of life; and can contribute also in improvement of the urban environment through achieving conservation objectives. This can only be achieved if there is a proper use of Earth-science information at the site selection and planning stages, as well as, the site investigation. This requires good understanding of ground conditions (e.g. geology, topography, geologic hazards, etc.), good sources of information (e.g. paper-based maps, satellite data, demographic data, etc.) and technologies (e.g. remote sensing and GIS) that can be able to integrate and manipulate these data. In this context, the present study is an attempt to evaluate geoenvironmental and socio-economical data that are related to the urban development and expansion of Hurghada area by the aid of remote sensing and GIS technologies. The evaluation incorporated bedrock characteristics (lithologies and structures), topography, geologic hazards, groundwater conditions, engineering considerations as well as the monitoring of urban land use changes, which helps to locate the suitable areas for thefuture urban expansion
Microvariability of Line Profiles in the Spectra of OB Stars II: $δ$Ori A
Creators: name: Kholtygin, A. F.
name: Burlakova, T. E.
name: Fabrika, S. N.
name: Valyavin, G. G.
name: Yushkin, M. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have studied variability of the spectral lines of the OB star $δ$Ori A--the brightest component of the $δ$Ori triple system. Forty spectra with signal-to-noise ratios $\approx$500--800 and a time resolution of four minutes were obtained. We detected variability in the HeII$ λ4686$, HeI$ λ$4713 and H$β$ absorption and the CIII$ λ$5696 emission line profiles. The amplitude of the variability is $\approx$(0.5--1)% of the continuum intensity. The dynamical wavelet spectrum of the profile variations reveals large-scale components in the interval 25--50 km/s that move within the -$V\sin i$ to $V\sin i$ band for the primary star of the system, Aa$^1$, with a band crossing time of 4$^h$--5$^h$. However, some of the variable features go outside the band, presumably due to either imhomogeneities in the stellar wind from $δ$Ori Aa$^1$ or non-radial pulsations of the weaker components of the system, Aa$^2$ or Ab. The detected variability may by cyclic with a period of $\approx 4^h$ . We suggest that it is associated with non-radial pulsations of the primary in the sector mode $(l, m)=(2,-2)$.
description: 8 figures
Additional file 1 of Human Papillomavirus associated prevention: knowledge, attitudes, and perceived risks among men who have sex with men and transgender women in Pakistan: a qualitative study
Creators: name: Ejaz, Muslima
name: Ekström, Anna Mia
name: Ahmed, Alyan
name: Haroon, Aymen
name: Ali, Dania
name: Ali, Tazeen Saeed
name: Salazar, Mariano
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. FGDs Interview guide
Quality of Life of the Eelderly in Phon Songkhram Sub-District, Non-Sung District, Nakhon Ratchasima Province
Creators: name: Kanisorn Hankla
Publisher: name: DR.KEN Institute of Academic Development and Promotion.
Year: 2021
Subjects: Quality of life
Elderly

description: International Journal of Sociologies and Anthropologies Science Reviews (IJSASR), 1, 2, 1_9
Quantum-gravity phenomenology, Lorentz symmetry, and the SME
Creators: name: Lehnert, Ralf
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Violations of spacetime symmetries have recently been identified as promising signatures for physics underlying the Standard Model. The present talk gives an overview over various topics in this field: The motivations for spacetime-symmetry research, including some mechanisms for Lorentz breaking, are reviewed. An effective field theory called the Standard-Model Extension (SME) for the description of the resulting low-energy effects is introduced, and some experimental tests of Lorentz and CPT invariance are listed.
description: 8 pages, 2 figures, Plenary talk at 12th Mexican School on Particles and Fields and 6th Latin American Symposium on High Energy Physics (VI-Silafae/XII-MSPF), Puerto Vallarta, Mexico, 1-8 Nov 2006
Shear strain localization in elastodynamic rupture simulations
Creators: name: Daub, Eric G.
name: Manning, M. Lisa
name: Carlson, Jean M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We study strain localization as an enhanced velocity weakening mechanism on earthquake faults. Fault friction is modeled using Shear Transformation Zone (STZ) Theory, a microscopic physical model for non-affine rearrangements in granular fault gouge. STZ Theory is implemented in spring slider and dynamic rupture models of faults. We compare dynamic shear localization to deformation that is uniform throughout the gouge layer, and find that localized slip enhances the velocity weakening of the gouge. Localized elastodynamic ruptures have larger stress drops and higher peak slip rates than ruptures with homogeneous strain.
description: 6 pages, 3 figures