cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A New Image Steganography Based On First Component Alteration Technique
Creators: name: Kaur, Amanpreet
name: Dhir, Renu
name: Sikka, Geeta
Publisher: name: arXiv
Year: 2010
Subjects: subject: Multimedia (cs.MM)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper, A new image steganography scheme is proposed which is a kind of spatial domain technique. In order to hide secret data in cover-image, the first component alteration technique is used. Techniques used so far focuses only on the two or four bits of a pixel in a image (at the most five bits at the edge of an image) which results in less peak to signal noise ratio and high root mean square error. In this technique, 8 bits of blue components of pixels are replaced with secret data bits. Proposed scheme can embed more data than previous schemes and shows better image quality. To prove this scheme, several experiments are performed, and are compared the experimental results with the related previous works.
description: 4 pages IEEE format, International Journal of Computer Science and Information Security, IJCSIS December 2009, ISSN 1947 5500, http://sites.google.com/site/ijcsis/
title: Digital Poetry From a Cyborg Perspective
Creators: name: Hosmer, Daniel James
Publisher: name: Old Dominion University Libraries
Year: 2012

description: This study analyzes digital poetry from a cyborg perspective, showing how its multiple material aspects are foregrounded to facilitate the reader's performance of poems. It explores the poetic functions, possibilities, and constraints of the medium of digital poetry through the application of Augusto Boal's Theatre of the Oppressed, comparisons with print methods of conveying meaning, and close readings of digital poems. The application of Theatre of the Oppressed as a framework also allows for the study of the power relationships involved in performing digital poetry and in using digital technology as a whole, while showing digital poetry to be a possible tool for overcoming the oppression created and teaching digital literacy. A close reading of the digital poem Arteroids, by Jim Andrews, demonstrates how interconnected material aspects function to create meaning in the context of a cyborg performance of a digital poem as well as how the same material aspects open up and constrain the reader's experience.
Quality control in the endoplasmic reticulum: Folding and misfolding of vesicular stomatitis virus G protein in cells and in vitro
Creators: name:  Balch, W.E.
name: De Silva, A.M.
name:  Helenius, A.
Publisher: name: Rockefeller University Press
Year: 1990

description: Parallel experiments in living cells and in vitro were undertaken to characterize the mechanism by which misfolded and unassembled glycoproteins are retained in the ER. A thermoreversible folding mutant of vesicular stomatitis virus (VSV) G protein called ts045 was analyzed. At 39°C, newly synthesized G failed to fold correctly according to several criteria: intrachain disulfide bonds were incomplete; the B2 epitope was absent; and the protein was associated with immunoglobulin heavy chain binding protein (BiP), a heat shock-related, ER protein. When the temperature was lowered to 32°C, these properties were reversed, and the protein was transported to the cell surface. Upon the shift up from 32°C back to 39°C, G protein in the ER returned to the misfolded form and was retained, while the protein that had reached a pre-Golgi compartment or beyond was thermostable and remained transport competent. The misfolding reaction could be reconstituted in a cell free system using ts045 virus particles and protein extracts from microsomes. Taken together, the results showed that ER is unique among the organelles of the secretory pathway in containing specific factors capable of misfolding G protein at the nonpermissive temperature and thus participating in its retention.
Infrared behavior of QCD from the Dyson-Schwinger formalism
Creators: name: Fischer, Christian S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the properties of two different types of infrared solutions of Landau gauge Yang-Mills theory and argue for one of these (the 'scaling solution'). We furthermore clarify the status of previously obtained results from DSEs on a four-torus. Including quarks we discuss a relation between confinement and dynamical chiral symmetry breaking based on the scaling solution of Yang-Mills theory. An infrared singularity in the quark-gluon vertex allows for a solution of the $U_A$(1) problem along the lines of a mechanism suggested by Kogut and Susskind long ago.
description: 7 pages, 2 figures, talk presented at the conference LIGHT CONE 2008, July 7-11, 2008, Mulhouse, France
Role of TNF in the regulation of the innate immune response in Leishmaniasis
Creators: name: Hu, S
Publisher: name: University Of Tasmania
Year: 2023

description: The absence of tumor necrosis factor (TNF) causes lethal infection by Leishmania major (L. major) in normally resistant mice C57BL/6J (B6.WT) mice, but the underlying mechanism has so far remained elusive. We found B6.WT mice without the TNF gene (B6.TNF-/-) displayed not only non-healing cutaneous lesions but also serious liver and spleen infection upon L. major infection. The enlarged liver showed increased inflammation and harbored a new monocyte- derived-macrophage population showing a CD45\\(^+\\)F4/80\\(^+\\)Ly6C\\(^{low}\\)CD11b\\(^{hi}\\) phenotype. This population continuously accumulated and typically displayed a M2 macrophage phenotype with high expression of CD206, Arginase-1 and interleukin-6 (IL-6). Of note, IL-6 is normally considered as a pro-inflammatory cytokine, but it also has been shown to have anti- inflammatory properties. Absence of TNF induced increased IL-6 expression and upregulated M-CSF receptor expression downstream. The elevated IL-6 level skewed monocyte differentiation from dendritic cells (DCs) to macrophages. Furthermore, TNF inhibited both IL-6-induced gp130-STAT3 and IL-4-STAT6 signaling activation, thereby abrogating an IL- 6 facilitated M2 macrophage polarization. Spleens from B6.TNF-/- mice were around three times larger than B6.WT mice and contained significantly more parasites. Plasmacytoid dendritic cells (pDC) are the key immune inducing population during leishmaniasis, producing IL-12 and promoting a Th1 immune response. B6.TNF\\(^{-/-}\\) mice displayed significantly fewer pDC and a non-defined B220\\(^+\\) monocyte-derived cell population compared to B6.WT mice. T cells and B cells did not show significant differences between the two strains, but CD11b\\(^+\\)F4/80\\(^+\\) cells were found to be in higher numbers in B6.TNF\\(^{-/-}\\) mice. Therefore, our results set the basis to investigate the role of IL-6 signaling in macrophage polarization. Our findings also demonstrated the critical role of TNF in the development of different DC populations, that may subsequently affect T cell-mediated protection against L. major infection. In conclusion, these findings may potentially explain the increased risk of opportunistic infection and relapses in patients receiving anti-TNF treatment.
MPEC 2025-G31 : 2025 FN20
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2025 FN20

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Lectures on Holographic Superfluidity and Superconductivity
Creators: name: Herzog, Christopher P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Four lectures on holography and the AdS/CFT correspondence applied to condensed matter systems. The first lecture introduces the concept of a quantum phase transition. The second lecture discusses linear response theory and Ward identities. The third lecture presents transport coefficients derived from AdS/CFT that should be applicable in the quantum critical region associated to a quantum phase transition. The fourth lecture builds in the physics of a superconducting or superfluid phase transition to the simple holographic model of the third lecture.
description: 39 pages, 9 figures, lectures given at the Trieste Spring School on Superstring Theory and Related Topics; v2 small corrections, to appear in J. Phys. A
Aspects of the biology of the cool-temperate scorpion : Cercophonius squama in Tasmania
Creators: name: Miller, AL
Publisher: name: University Of Tasmania
Year: 2023

description: This project investigated sexual dimorphism of the scorpion, Cercophonius squama, in southern Tasmania using morphometrics. Results were applied in a population investigation, which explored the density and seasonal variability of activity in a population of scorpions in Hobart, Tasmania. The reproductive behaviours were observed and recorded for the first time in this species and a predictive model of distribution for C. squama in Tasmania was developed. A set of eight measurements was taken from individuals and a MANOVA was performed to test for any differences between the sexes. A capture mark and release program was employed to study the size and surface activity of the population during the summer months. Reproductive behaviours were recorded in the laboratory under low intensity red and white light. A new biogeographical regionalisation model for Tasmania was used to develop a theoretical distribution of C. squama in the state. Males and females are significantly different from each other using morphometrics. Additionally, a secondary sexual characteristic was found in mature males that can identify sex in adults. Seasonal activity is different between males and females. Females have a peak in late spring, which coincides with the late stages of embryonic development. The surface activity of males increases throughout the summer to peak in autumn during the mating season. Juveniles are less abundant than adults and do not demonstrate a peak in activity during anytime of the year. Females give birth to 20-30 young during late summer to autumn in southern Tasmania. Mating occurs in autumn, soon after birth. A na‚àövòve model was developed that needs verification with sampling of predicted areas. This study gained valuable information about the biology of C. squama that can be used in future investigations. This scorpion appears to demonstrate life history strategies similar to those of other scorpions (vivipary). An environmental cline in reproduction may occur across the state with the colder, higher elevation regions lagging behind in the time of year in which females give birth. Investigations into population dynamics, geographical variation and reproductive ecology can now be undertaken with this species.
Resonant inelastic x-ray scattering in single-crystal superconducting PrFeAsO0.7
Creators: name: Jarrige, I.
name: Ishii, K.
name: Yoshida, M.
name: Fukuda, T.
name: Ikeuchi, K.
name: Ishikado, M.
name: Hiraoka, N.
name: Tsuei, K. D.
name: Kito, H.
name: Iyo, A.
name: Eisaki, H.
name: Shamoto, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Resonant inelastic x-ray scattering (RIXS) spectra at the Fe K-edge were measured for a single crystal of the iron oxypnictide superconductor PrFeAsO0.7 (Tc=42 K). They disclose a weak, broad feature centered around 4.5 eV energy loss, which is slightly resonantly enhanced when the incident energy is tuned in the vicinity of the 4p white line. We tentatively ascribe it to the charge-transfer excitation between As 4p and Fe 3d.
description: 2 pages, 2 figures
The kinematics in the pc-scale jets of AGN The case of S5 1803+784
Creators: name: Britzen, S.
name: Kudryavtseva, N. A.
name: Witzel, A.
name: Campbell, R. M.
name: Ros, E.
name: Karouzos, M.
name: Mehta, A.
name: Aller, M. F.
name: Aller, H. D.
name: Beckert, T.
name: Zensus, J. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a kinematic analysis of jet component motion in the VLBI jet of the BL Lac object S5 1803+784, which does not reveal long-term outward motion for most of the components. Understanding the complex kinematic phenomena can possibly provide insights into the differences between quasars and BL Lac objects. The blazar S5 1803+784 has been studied with VLBI at $ν$ =1.6, 2.3, 5, 8.4, and 15 GHz between 1993.88 and 2005.68 in 26 observing runs. We (re)analyzed the data and present Gaussian model-fits. We collected the already published kinematic information for this source from the literature and re-identified the components according to the new scenario presented in this paper. Altogether, 94 epochs of observations have been investigated. A careful study of the long-term kinematics reveals a new picture for component motion in S5 1803+784. In contrast to previously discussed motion scenarios, we find that the jet structure within 12 mas of the core can most easily be described by the coexistence of several bright jet features that remain on the long-term at roughly constant core separations (in addition to the already known {\it stationary} jet component $\sim$ 1.4 mas) and one faint component moving with an apparent superluminal speed ($\sim$ 19c, based on 3 epochs). While most of the components maintain long-term roughly constant distances from the core, we observe significant, smooth changes in their position angles. We report on an evolution of the whole jet ridge line with time over the almost 12 years of observations. The width of the jet changes periodically with a period of $\sim$ 8 to 9 years. We find a correlation between changes in the position angle and maxima in the total flux-density. We present evidence for a geometric origin of the phenomena and discuss possible models.
description: The manuscript will be published by A&A
The Doring River Archaeology Project: approaching the evolution of human land use patterns in the Western Cape, South Africa
Creators: name: Shaw, Matthew
name: Ames, Christopher
name: Phillips, Natasha
name: Chambers, Sherrie
name: Dosseto, Anthony
name: Douglas, Matthew
name: Goble, Ron
name: Jacobs, Zenobia
name: Jones, Brian
name: Lin, Sam
name: Low, Marika
name: McNeil, Jessica-Louise
name: Nasoordeen, Shezani
name: O'Driscoll, Corey
name: Saktura, Rosaria
name: Sumner, T Alexandra
name: Watson, Sara
name: Will, Manuel
name: Mackay, Alexander
Publisher: name: University of Wollongong
Year: 2025
Subjects: classificationCode: 3104
subject: Evolutionary biology
classificationCode: 4401
subject: Anthropology
subject: FOS: Sociology
classificationCode: 4301
subject: Archaeology

description: The open-air archaeology of southern Africa is extremely rich, yet has been only modestly influential in constructions of Late Pleistocene human behavior. Here we report on two seasons of work conducted as part of the Doring River Archaeology Project, which aims to reveal patterns of human land use and technological decision-making from the Earlier Stone Age through to the appearance of herders in southern Africa’s semi-arid interior. Across those two seasons we have mapped and analyzed more than 20,000 cores and tools across six open-air localities, with the small sample of available ages suggesting the accumulation of archaeologically-rich sediment bodies along the Doring River extends back to at least 200,000 years. Our results suggest clustering of artifacts at multiple temporal and spatial scales, from individual knapping events to aggregates of hundreds of bifacial tools. All known phases of the archaeological record appear to be represented in these assemblages, and previously documented contrasts between occupational patterns in the region’s open-air and rock shelter localities is reinforced. These data confirm the critical importance of incorporating open-air data into depictions of the human past in studies of the African Paleolithic.
Науковедение в России: трансдисциплинарность, институционализация и диалог с научной политикой
Creators: name: Kochetkov, Dmitry
Publisher: name: Zenodo
Year: 2025
Subjects: Науковедение
Science Studies
Science and Technology Studies
STS
Science of Science
Metascience
Наукометрия
Scientometrics
Bibliometrics
Наука о науке

description: Презентация направлена на обсуждение исторических этапов развития науковедения, актуальных проблем и перспектив этого научного направления в России в контексте глобальных трансформаций научной системы. В центре внимания — вопросы трансдисциплинарной интеграции, преодоления разрыва между академическими исследованиями и практикой управления наукой, а также институционализации науковедения как самостоятельного научного направления.
NURSE-PHARMACIST COLLABORATION ON MEDICATION RECONCILIATION PREVENTS MEDICATION ERROR
Creators: name: Amani Ali M Alqahtani,Khalid Mohammed Alzahrani,Omar Jaber Alharbi,Amro abdulrahim Bokhari,Hanan Mohammed Banjar,Abrar mohammad yousef sait,Layla Abdu  Othman Brnawi,Suhair Muhammad Rashid Al Soleimani,Norah Radad Alfahmi,KHALED DAHIBASH ALHARTHY
Publisher: name: Zenodo
Year: 2023

description: In order to enhance medication safety in the hospital, assigned nurses in each department closely collaborate with the pharmacist on a regular basis to prevent any errors in drug management. Within a secluded institution located in a rural setting with a frequent turnover of team members, their job is crucial in mitigating the danger of errors caused by the rapid replacement of medical and paramedical professionals. While medication reconciliation alone cannot completely solve the problem of increasing expenditures and injuries caused by pharmaceutical errors in our healthcare system, it is the initial and crucial component of the drug management puzzle.
Evaluating Effectiveness of Tamper Proofing on Dynamic Graph Software Watermarks
Creators: name: Khiyal, Malik Sikandar Hayat
name: Khan, Aihab
name: Amjad, Sehrish
name: Khalil, M. Shahid
Publisher: name: arXiv
Year: 2010
Subjects: subject: Multimedia (cs.MM)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: For enhancing the protection level of dynamic graph software watermarks and for the purpose of conducting the analysis which evaluates the effect of integrating two software protection techniques such as software watermarking and tamper proofing, constant encoding technique along with the enhancement through the idea of constant splitting is proposed. In this paper Thomborson technique has been implemented with the scheme of breaking constants which enables to encode all constants without having any consideration about their values with respect to the value of watermark tree. Experimental analysis which have been conducted and provided in this paper concludes that the constant encoding process significantly increases the code size, heap space usage, and execution time, while making the tamper proofed code resilient to variety of semantic preserving program transformation attacks.
description: 7 pages IEEE format, International Journal of Computer Science and Information Security, IJCSIS December 2009, ISSN 1947 5500, http://sites.google.com/site/ijcsis/
Coherent spin rotation in the presence of a phonon-bottleneck effect
Creators: name: Chen, L.
name: Chiorescu, I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A characteristic of spin reversal in the presence of phonon-bottleneck is the deviation of the magnetization cycle from a reversible function into an opened hysterezis cycle. In recent experiments on molecular magnets (e.g. V$_{15}$ and Ru$_2$), the zero-field level repulsion was sufficiently large to ensure an otherwise adiabatic passage through zero-field and the magnetization curves can be described by using only a phonon-bottleneck model. Here, we generalize the phonon-bottleneck model into a model able to blend the non-adiabatic dynamics of spins with the presence of a non-equilibrium phonon bath. In this simple phenomenological model, Bloch equations are written in the eigenbasis of the effective spin Hamiltonian, considered to be a two-level system at low temperatures. The relaxation term is given by the phonon-bottleneck mechanism. To the expense of calculus time, the method can be generalized to multi-level systems, where the notion of Bloch sphere does not apply but the density matrix formalism is still applicable.
description: as published in EuroPhys Letters
A real gap : consequences of defunding Tasmania's reintegration for ex-offenders' program
Creators: name: Herrlander Birgerson, E
Publisher: name: University Of Tasmania
Year: 2023

description: As Australia's rates of imprisonment, and recidivism rates of returned citizens, continue to rise, it is becoming increasingly important to better understand how to support returning citizens to adequately prepare them for a life post-release and enhance their (re)integration. While recent research focuses on what we need to do to successfully support the community transition of incarcerated persons following release to reduce recidivism, current research focuses on program characteristics and what constitutes a successful program. Consequently, there appears to be a lack of research examining the impacts of removing throughcare support programs designed to successfully transition returning citizens. This exploratory study examines the consequences of removing a successful reintegration program in Tasmania ‚Äö- the Reintegration for Ex-Offenders' Program (REO) ‚Äö- run by The Salvation Army between July 2011 and July 2015, when it was defunded under the Liberal government. Using a purposive, snowball sampling approach, the study employed a qualitative methodological approach to conduct semi-structured interviews with key stakeholders involved with the REO program. The thematic analysis of the interview data demonstrates that removing a transitional and accommodation support program results in significant consequences, including suicide of returned citizens. In addition to finding a pattern of 'program churn' of funding and defunding a range of support programs for returning citizens, participants highlighted key consequences as: gap in services; lack of support and housing; loss of relationships and trust between service providers and returned citizens, as well as between organisations; loss of human resources; persons remaining in the system for longer than required; persons being released with no transitional support or accommodation, resulting in reoffending; and health implications for returning citizens and service providers. The findings of this study, therefore, have significant implications for understanding the very serious consequences of simple government decisions to defund a program in this sector.
Free string evolution across plane wave singularities
Creators: name: Craps, Ben
name: De Roo, Frederik
name: Evnin, Oleg
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In these proceedings, we summarize our studies of free string propagation in (near-)singular scale-invariant plane wave geometries. We analyze the singular limit of the evolution for the center-of-mass motion and all excited string modes. The requirement that the entire excitation energy of the string should be finite excludes consistent propagation across the singularity, in case no dimensionful scales are introduced at the singular locus (in an otherwise scale-invariant space-time).
description: Proceedings of the work presented at the 4-th EU RTN Workshop in Varna, Bulgaria
Additional file 1 of Mechanism of exosomal miR-155 derived from bone marrow mesenchymal stem cells on stemness maintenance and drug resistance in myeloma cells
Creators: name: Gao, Xinyu
name: Zhou, Jin
name: Wang, Jinghua
name: Dong, Xiushuai
name: Chang, Yuying
name: Jin, Yinglan
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. BMSC-derived exosomes carrying miR-155 inhibited apoptosis, promoted cell division, and upregulated the expression of protein associated with stemness maintenance, Hedgehog signaling, and drug resistance.
An investigation of individual differences and Instagram use as predictors of orthorexia
Creators: name: Norton, EI
Publisher: name: University Of Tasmania
Year: 2023

description: Previous research suggests Instagram, a picture based social-networking site, is associated with obsessive healthy-eating (orthorexia) in females. This study aimed to build upon this research by using a cross-sectional approach to investigate the effect of exposure to popular Instagram users (micro-celebrities), Instagram health-related content (e.g. 'fitspiration'), and user characteristics on orthorexia. Australian adult female Instagram users (`N` = 206) completed online measures of orthorexia, exposure to Instagram micro-celebrities and fitspiration content, appearance comparisons, benign envy, perfectionism, Instagram connectedness, and Instagram investment. Multiple regression analysis revealed these variables predicted 42.2% of orthorexia behaviour, with significant predictors being benign envy, appearance comparison, and exposure to micro-celebrities. Users high in Instagram connectedness (feelings of social connection through the app) had significantly weaker orthorexia at higher levels of appearance comparisons. Overall, aspects of Instagram use, benign envy, and appearance comparison tendencies, might put some females at risk of developing orthorexia more than others. Results may also suggest that interventions that increase connection with others through Instagram might be successful in reducing harmful effects of Instagram appearance comparison for females, although further research is warranted to confirm this. Future research should investigate whether and how females derive a sense of connection through Instagram.
Presenting eyewitness confidence to jury members : the influence of verbal, numerical, and graphical expressions of confidence
Creators: name: Peisker-Richings, T
Publisher: name: University Of Tasmania
Year: 2023

description: Eyewitness identification is susceptible to error and, despite robust evidence that eyewitness confidence can provide an index of identification accuracy, there remains uncertainty as to how confidence should be collected and presented to jurors. Current guidelines recommend collecting confidence in the witness's own words‚ÄövÑvp, but non-standardised expressions may be difficult for jurors to interpret. Two studies investigated the influence of verbal, numerical, and graphical expressions of eyewitness confidence on jury decision-making. Study One asked 44 (male=18, female=26) jury eligible participants (i.e., 18 years of age or older) to convert 16 verbal expressions of confidence to a percentage score, in terms of estimated eyewitness accuracy. There was substantial variability in participants' responses, suggesting that verbal expressions of confidence may have limited diagnostic value. In Study Two, 163 jury eligible participants read a mock police report and court transcript including testimony from an eyewitness, who identified the suspect and provided a numerical confidence estimate. Study two tested whether numerical confidence estimates facilitated framing effects that might make uncertainty salient and reduce jurors' perceptions of identification reliability. We found little evidence of framing effects for numerical expressions of confidence. However, we also found that participant did not discriminate between moderate and high confidence estimates.
The effects of concept acquisition components AI (attribute identification) and RL (rule learning) on the acquisition and transfer of complex concepts
Creators: name: Stainton, John Brian
Publisher: name: University of British Columbia
Year: 2011

description: The present study considered a concept as the sum of two components: attributes and a rule. Extension of this model to the process of concept acquisition led to the notion of two component processes: attribute identification and rule learning. A subject provided with the relevant attributes in a task has only to acquire the correct conceptual rule. This process was called rule learning (RL). Initial provision of the appropriate rule requires only the acquisition of the relevant attributes, a process called attribute identification (Al). Provision of no initial information requires the learner to acquire both conceptual components. This process is called complete learning (CL). Seventy-two subjects were divided into six training groups. Five of these groups were assigned to learning paradigms that provided training on two complex concepts under varying amounts of initial information (CL-CL; AI-AI; AI-RL; RL-AI; and RL-RL). The sixth group acted as a control and performed filler tasks in place of the training tasks. The results showed that first-task learning in the paradigms had a significant effect on transfer performance. RL-first learners manifested the best transfer performance. An analysis of acquisition performance on the first learning task showed superior performance on the RL task followed by Al and CL tasks in that order. Implications of these results to practical classroom activity were discussed and illustrated with the use of an example from science education.
Are a set of microarrays independent of each other?
Creators: name: Efron, Bradley
Publisher: name: arXiv
Year: 2009
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Having observed an $m\times n$ matrix $X$ whose rows are possibly correlated, we wish to test the hypothesis that the columns are independent of each other. Our motivation comes from microarray studies, where the rows of $X$ record expression levels for $m$ different genes, often highly correlated, while the columns represent $n$ individual microarrays, presumably obtained independently. The presumption of independence underlies all the familiar permutation, cross-validation and bootstrap methods for microarray analysis, so it is important to know when independence fails. We develop nonparametric and normal-theory testing methods. The row and column correlations of $X$ interact with each other in a way that complicates test procedures, essentially by reducing the accuracy of the relevant estimators.
description: Published in at http://dx.doi.org/10.1214/09-AOAS236 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
The dispersion-managed Ginzburg-Landau equation and its application to femtosecond lasers
Creators: name: Biondini, Gino
Publisher: name: arXiv
Year: 2008
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The complex Ginzburg-Landau equation has been used extensively to describe various non-equilibrium phenomena. In the context of lasers, it models the dynamics of a pulse by averaging over the effects that take place inside the cavity. Ti:sapphire femtosecond lasers, however, produce pulses that undergo significant changes in different parts of the cavity during each round-trip. The dynamics of such pulses is therefore not adequately described by an average model that does not take such changes into account. The purpose of this work is severalfold. First we introduce the dispersion-managed Ginzburg-Landau equation (DMGLE) as an average model that describes the long-term dynamics of systems characterized by rapid variations of dispersion, nonlinearity and gain in a general setting, and we study the properties of the equation. We then explain how in particular the DMGLE arises for Ti:sapphire femtosecond lasers and we characterize its solutions. In particular, we show that, for moderate values of the gain/loss parameters, the solutions of the DMGLE are well approximated by those of the dispersion-managed nonlinear Schrodinger equation (DMNLSE), and the main effect of gain and loss dynamics is simply to select one among the one-parameter family of solutions of the DMNLSE.
description: 22 pages, 4 figures, to appear in Nonlinearity
Phase separation transition in liquids and polymers induced by electric field gradients
Creators: name: Marcus, G.
name: Tsori, Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Spatially uniform electric fields have been used to induce instabilities in liquids and polymers, and to orient and deform ordered phases of block-copolymers. Here we discuss the demixing phase transition occurring in liquid mixtures when they are subject to spatially nonuniform fields. Above the critical value of potential, a phase-separation transition occurs, and two coexisting phases appear separated by a sharp interface. Analytical and numerical composition profiles are given, and the interface location as a function of charge or voltage is found. The possible influence of demixing on the stability of suspensions and on inter-colloid interaction is discussed.
description: 7 pages, 3 figures. Special issue of the J. Phys. Soc. Jap
The "Ceaseless Quest for Truth": The Southern Historical Collection and the Making and Remaking of the Southern Past
Creators: name: Hall, Jacquelyn Dowd
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: southern states--study and teaching
Archival resources--southern states
southern states--history
history--study and teaching
historians--southern states--history--21st century
archives--southern states

description: Paper on how the Southern Historical Collection has evolved "to fulfill its founder's aspirations and to transcend them," concentrating on the 1920s and 1930s, 1970s, and the present. Presented in advance of the Southern Sources: A Symposium Celebrating Seventy-Five Years of the Southern Historical Collection, 18-19 March 2005 in the Wilson Library at the University of North Carolina at Chapel Hill.
The Unconquerable Archive
Creators: name: Baptist, Edward E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: southern states--study and teaching
Archival resources--southern states
History--Study and teaching
historians--southern states--history--21st century
archives--southern states
southern states--history

description: Paper on "the relationship between the sources of the Southern Historical Collection and the historiography of the antebellum South," and how the same documents were used at different times and in different ways to write the history of slavery. Presented at Southern Sources: A Symposium Celebrating Seventy-Five Years of the Southern Historical Collection, 18-19 March 2005 in the Wilson Library at the University of North Carolina at Chapel Hill.
Story Upon Story
Creators: name: Stowe, Steven M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: southern states--study and teaching
Archival resources--southern states
History--Study and teaching
historians--southern states--history--21st century
archives--southern states
southern states--history

description: Paper on how researchers develop personal relationships with archives, the documents they work with, and the people they study and how history is a "narrative made from what we discover from the words of others and from our own pasts."  Presented at Southern Sources: A Symposium Celebrating Seventy-Five Years of the Southern Historical Collection, 18-19 March 2005 in the Wilson Library at the University of North Carolina at Chapel Hill.
Who Owns the Dead? Biography, Archives, and Ethics
Creators: name: Wyatt-Brown, Bertram
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: archives--southern states
southern states--study and teaching
Archival resources--southern states
History--Study and teaching
historians--southern states--history--21st century
southern states--history

description: Paper on the complex tensions that can develop between how biographers portray persons after their deaths, and how their surviving relatives and the public wish them to be portrayed. Cites the examples of Sylvia Plath, Anne Sexton, and William Alexander Percy. Presented at Southern Sources: A Symposium Celebrating Seventy-Five Years of the Southern Historical Collection, 18-19 March 2005 in the Wilson Library at the University of North Carolina at Chapel Hill.
Which Civil War? Trying to Hit an Ever Moving Target
Creators: name: Blair, William Alan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: southern states--study and teaching
Archival resources--southern states
History--Study and teaching
historians--southern states--history--21st century
archives--southern states
southern states--history

description: Paper on how extensively the Civil War has been written about, what aspects have been focused on during  different eras, and how "the Southern Historical Collection has been one of the forces helping shape these changing meanings of Civil War studies." Presented at Southern Sources: A Symposium Celebrating Seventy-Five Years of the Southern Historical Collection, 18-19 March 2005 in the Wilson Library at the University of North Carolina at Chapel Hill.
Interacting agegraphic tachyon model of dark energy
Creators: name: Sheykhi, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Scalar-field dark energy models like tachyon are often regarded as an effective description of an underlying theory of dark energy. In this Letter, we implement the interacting agegraphic dark energy models with tachyon field. We demonstrate that the interacting agegraphic evolution of the universe can be described completely by a single tachyon scalar field. We thus reconstruct the potential as well as the dynamics of the tachyon field according to the evolutionary behavior of interacting agegraphic dark energy.
description: 11 pages, to appear in Phys. Lett. B
Balancing Bounded Treewidth Circuits
Creators: name: Jansen, Maurice
name: N, Jayalal Sarma M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences
subject: F.2.3

description: Algorithmic tools for graphs of small treewidth are used to address questions in complexity theory. For both arithmetic and Boolean circuits, it is shown that any circuit of size $n^{O(1)}$ and treewidth $O(\log^i n)$ can be simulated by a circuit of width $O(\log^{i+1} n)$ and size $n^c$, where $c = O(1)$, if $i=0$, and $c=O(\log \log n)$ otherwise. For our main construction, we prove that multiplicatively disjoint arithmetic circuits of size $n^{O(1)}$ and treewidth $k$ can be simulated by bounded fan-in arithmetic formulas of depth $O(k^2\log n)$. From this we derive the analogous statement for syntactically multilinear arithmetic circuits, which strengthens a theorem of Mahajan and Rao. As another application, we derive that constant width arithmetic circuits of size $n^{O(1)}$ can be balanced to depth $O(\log n)$, provided certain restrictions are made on the use of iterated multiplication. Also from our main construction, we derive that Boolean bounded fan-in circuits of size $n^{O(1)}$ and treewidth $k$ can be simulated by bounded fan-in formulas of depth $O(k^2\log n)$. This strengthens in the non-uniform setting the known inclusion that $SC^0 \subseteq NC^1$. Finally, we apply our construction to show that {\sc reachability} for directed graphs of bounded treewidth is in $LogDCFL$.
The Southern Historical Collection and Civil War and Reconstruction History: A Past and a Future
Creators: name: Glymph, Thavolia
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: southern states--study and teaching
Archival resources--southern states
southern states--history
history--study and teaching
historians--southern states--history--21st century
archives--southern states

description: Paper on how Southern Historical Collection has "advanced the study of the South but not always in the manner [J. G. de Roulhac Hamilton, its founder] had in mind." Materials gathered to support Hamilton's historical perspective remain vital to the posing of new questions about the Civil War and Reconstruction South.  Presented at Southern Sources: A Symposium Celebrating Seventy-Five Years of the Southern Historical Collection, 18-19 March 2005 in the Wilson Library at the University of North Carolina at Chapel Hill.
History from the Archives Up
Creators: name: Hahn, Steven
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: southern states--study and teaching
Archival resources--southern states
History--Study and teaching
archives--southern states
historians--southern states--history--21st century
southern states--history

description: Paper on how archives have provided surprising turns in the author's research, and how archives require "a creative and eclectic approach to the making of context and to the asking of questions." Presented at Southern Sources: A Symposium Celebrating Seventy-Five Years of the Southern Historical Collection, 18-19 March 2005 in the Wilson Library at the University of North Carolina at Chapel Hill.
A Novel Trigon based Dual Authentication Protocol for Enhancing Security in Grid Environment
Creators: name: Ruckmani, V.
name: Sadasivam, Dr G Sudha
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In recent times, a necessity has been raised in order to distribute computing applications often across grids. These applications are dependent on the services like data transfer or data portal services as well as submission of jobs. Security is of utmost importance in grid computing applications as grid resources are heterogeneous, dynamic, and multidomain. Authentication remains as the significant security challenge in grid environment. In traditional authentication protocol a single server stores the sensitive user credentials, like username and password. When such a server is compromised, a large number of user passwords, will be exposed. Our proposed approach uses a dual authentication protocol in order to improve the authentication service in grid environment. The protocol utilizes the fundamental concepts of trigon and based on the parameters of the trigon the user authentication will be performed. In the proposed protocol, the password is interpreted and alienated into more than one unit and these units are stored in two different servers, namely, Authentication Server and Backend Server. Only when the combined authentication scheme from both the servers authenticates the user, the privilege of accessing the requested resources is obtained by the user. The main advantage of utilizing the dual authentication protocol in grid computing is that an adversary user cannot attain the access privilege by compromising a single consolidated server because of the fact that the split password is stored in different servers.
description: 9 pages IEEE format, International Journal of Computer Science and Information Security, IJCSIS December 2009, ISSN 1947 5500, http://sites.google.com/site/ijcsis/
Researching "Irretrievable" Subjects: Black Working-Class  Women in Southern Archives
Creators: name: Hunter, Tera W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: southern states--study and teaching
History--Study and teaching
Archival resources--southern states.
historians--southern states--history--21st century
archives--southern states
southern states--history

description: Paper on the challenges the author faced while researching the experiences of black working-class women in southern archives. Presented at Southern Sources: A Symposium Celebrating Seventy-Five Years of the Southern Historical Collection, 18-19 March 2005 in the Wilson Library at the University of North Carolina at Chapel Hill.
Longitudinal Spin Transfer to $Λ$ and $\barΛ$ Hyperons in Polarized Proton-Proton Collisions at $\sqrt{s}$ = 200 GeV
Creators: name: The STAR Collaboration
name: Abelev, B. I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The longitudinal spin transfer, $D_{LL}$, from high energy polarized protons to $Λ$ and $\barΛ$ hyperons has been measured for the first time in proton-proton collisions at $\sqrt{s} = 200 \mathrm{GeV}$ with the STAR detector at RHIC. The measurements cover pseudorapidity, $η$, in the range $|η| < 1.2$ and transverse momenta, $p_\mathrm{T}$, up to $4 \mathrm{GeV}/c$. The longitudinal spin transfer is found to be $D_{LL}= -0.03\pm 0.13(\mathrm{stat}) \pm 0.04(\mathrm{syst})$ for inclusive $Λ$ and $D_{LL} = -0.12 \pm 0.08(\mathrm{stat}) \pm 0.03(\mathrm{syst})$ for inclusive $\barΛ$ hyperons with $ = 0.5$ and $ = 3.7 \mathrm{GeV}/c$. The dependence on $η$ and $p_\mathrm{T}$ is presented.
description: 5 pages, 4 figures
[untitled]
Creators: name: Carter, Dan T.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: southern states--study and teaching
Archival resources--southern states
History--Study and teaching
historians--southern states--history--21st century
archives--southern states
southern states--history.

description: Paper on the author's reminiscences of personal experiences in archives while researching the Scottsboro Case and George Wallace. Paper also addresses the challenges that historians face in accessing records. Presented at Southern Sources: A Symposium Celebrating Seventy-Five Years of the Southern Historical Collection, 18-19 March 2005 in the Wilson Library at the University of North Carolina at Chapel Hill.