cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Design of VLC and heterogeneous RF/VLC systems for future generation networks: an algorithmic approach
Creators: name: Aboagye, Sylvester Boadi
Publisher: name: Memorial University of Newfoundland
Year: 2023

description: Visible light communication (VLC) has attracted significant research interest within the last decade due in part to the vast amount of unused transmission bandwidth in the visible light spectrum. VLC is expected to be part of future generation networks. The heterogeneous integration of radio frequency (RF) and VLC systems has been envisioned as a promising solution to increase the capacity of wireless networks, especially in indoor environments. However, the promised advantages of VLC and heterogeneous RF/VLC systems cannot be realized without proper resource management algorithms that exploit the distinguishing characteristics between RF and VLC systems. Further, the problem of backhauling for VLC systems has received little attention. This dissertation’s first part focuses on designing and optimizing VLC and heterogeneous RF/VLC systems. Novel resource allocation algorithms that optimize the sum-rate and energy efficiency performances of VLC, hybrid, and aggregated RF/VLC systems while considering practical constraints like illumination requirements, inter-cell interference, quality-of-service requirements, and transmit power budgets are proposed. Moreover, a power line communicationbased backhaul solution for an indoor VLC system is developed, and a backhaul-aware resource allocation algorithm is proposed. These algorithms are developed by leveraging tools from fractional programming (i.e., Dinkelbach’s transform and quadratic transform), the multiplier adjustment method, matching theory, and multi-objective optimization. The latter part of this dissertation examines the adoption of emerging beyond 5G technologies, such as intelligent reflecting surfaces (IRSs) and reconfigurable intelligent surfaces (RISs), to overcome the limitations of VLC systems and boost their performance gains. Novel system models for IRSs-aided and RISs-aided VLC systems are proposed, and metaheuristic-based algorithms are developed to optimize the configurations of the IRSs/RISs and, consequently, the performance of VLC systems. Extensive simulations reveal that the proposed resource allocation schemes outperform the considered benchmarks and provide performance close to the optimal solution. Furthermore, the proposed system models achieve superior performance compared to benchmark system models.
The mirabolic Hecke algebra
Creators: name: Rosso, Daniele
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20C08

description: The Iwahori-Hecke algebra of the symmetric group is the convolution algebra of $\gl_n$-invariant functions on the variety of pairs of complete flags over a finite field. Considering convolution on the space of triples of two flags and a vector we obtain the mirabolic Hecke algebra $R_n$, which had originally been described by Solomon. In this paper we give a new presentation for $R_n$ which shows that it is a quotient of a cyclotomic Hecke algebra, as defined by Ariki and Koike. From this we recover the results of Siegel about the representations of $R_n$. We use Jucys-Murphy elements to describe the center of $R_n$ and to give a $\mathfrak{gl}_\infty$-structure on the Grothendieck group of the category of its representations, giving `mirabolic' analogues of classical results about the Iwahori-Hecke algebra. We also outline a strategy towards a proof of the conjecture that the mirabolic Hecke algebra is a cellular algebra.
description: 27 pages
British Columbia Legislative Assembly sessional clipping book (1931-02)
Creators: name: :Unav
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: British Columbia. Legislative Assembly
valueUri: http://id.worldcat.org/fast/600765
subject: Law
valueUri: http://id.worldcat.org/fast/993678
subject: FOS: Law
subject: Politics and government
valueUri: http://id.worldcat.org/fast/1919741

description: These Sessional Clippings books cover the period 1891 to 1972, and include newspaper accounts written by various legislative reporters who covered debates occurring in the British Columbia Legislative Assembly. Transcripts of debates of the Legislative Assembly (Hansard) were not published in B.C. until 1970; hence these "Sessional Clipping Books" augment the "Journals", the record of daily proceedings of the Legislative Assembly. Selected clippings from various newspapers including the Vancouver Sun, the Vancouver Province, the Colonist, and the Times newspapers, relating to the newspaper reports concerning activities of the Legislature. The original sessional clippings books comprise 351 ledger size print volumes, held at the Legislative Library in Victoria BC. The print volumes were microfilmed onto 26 reels in 1977 under a Tri University Libraries (TRIUL) project by Precision Micrographic Services (Vancouver, B.C.), with the permission of the Legislative Library, Victoria, British Columbia. This digital collection was created by scanning the 26 microfilm reels.
Optimizing Consumer Credit Markets and Bankruptcy Policy
Creators: name: Mann, Ronald
Publisher: name: Columbia University
Year: 2006
Subjects: subject: Bankruptcy
subject: Debtor and creditor
subject: Credit cards
subject: Finance--Law and legislation
subject: Consumer credit
subject: Law
subject: FOS: Law
subject: Finance

description: This Article explores the relationship between consumer credit markets and bankruptcy policy. In general, I argue that the causative relationships running between borrowing and bankruptcy compel a new strategy for policing the conduct of lenders and borrowers in modern consumer credit markets. The strategy must be sensitive to the role of the credit card in lending markets and must recognize that both issuers and cardholders are well placed to respond to the increased levels of spending and indebtedness. In the latter parts of the Article, I recommend mandatory minimum payment requirements, a tax on distressed credit card debt, and the subordination of payments to credit card lenders in bankruptcy. I also argue that many aspects of the American bankruptcy system, as recently reformed, are overly protective of credit card issuers.
The linear relations between the complex moduli and using the linear relations reduce the stabilization equations for supersymmetric black holes in N=2 theory
Creators: name: Li, Dafa
Publisher: name: arXiv
Year: 2025
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In [Phys. Rev. D 54, 6293 (1996)], the black hole entropy was derived by solving the matrix equation obtained from the stabilization equations for the solution of frozen moduli. In this paper, by directly solving the stabilization equations for the solution of frozen moduli without using the matrix equation, we find linear relations between any two of the three complex moduli at the black hole horizon. So far, no one discusses the linear relations. Via the linear relations, we derive the unique solution of frozen moduli and reduce the stabilization equations in three different ways. For example, the eight stabilization equations in [Phys. Rev. D 54, 6293 (1996)] can be replaced equivalently with three equations: the solution of moduli z1 and two linear relations, which are much simpler and more intuitive.
description: 14 pages, no figure
The scaling of primordial gauge fields
Creators: name: Giovannini, Massimo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The large-scale magnetic fields arising from the quantum mechanical fluctuations of the hypercharge are investigated when the evolution of the gauge coupling is combined with a sufficiently long inflationary stage. In this framework the travelling waves associated with the quantum mechanical initial conditions turn asymptotically into standing waves which are the gauge analog of the Sakharov oscillations. Even if the rate of dilution of the hypermagnetic and hyperelectric fields seems to be superficially smaller than expected from the covariant conservation of the energy-momentum tensor, the standard evolution for wavelengths larger than the Hubble radius fully accounts for this anomalous scaling which is anyway unable to increase the amplitude of the magnetic power spectra after symmetry breaking. An effective amplification of the gauge power spectra may instead occur when the post-inflationary expansion rate is slower than radiation. We stress that the modulations of the gauge power spectra freeze as soon as the relevant wavelengths reenter the Hubble radius and not at the end of inflation. After the Mpc scale crosses the comoving Hubble radius the scaling of the magnetic power spectrum follows from the dominance of the conductivity. From these two observations the late-time values of the magnetic power spectra are accurately computed in the case of a nearly scale-invariant slope and contrasted with the situation where the phases of Sakharov oscillations are not evaluated at horizon crossing but at the end of inflation, i.e. when all the wavelengths relevant for magnetogenesis are still larger than the comoving horizon.
description: 12 pages, 1 figure; improved version matching the published paper
Commercializing Open Source Software: Do Property Rights Still Matter?
Creators: name: Mann, Ronald
Publisher: name: Columbia University
Year: 2006
Subjects: subject: Open source software
subject: Computer software--Development
subject: Intellectual property
subject: Business planning
subject: Computer software--Patents
subject: Law
subject: FOS: Law

description: This Article analyzes the role of patent rights in commercialized open source development models -- that is, development models that are part of business models centered on increasing shareholder returns. Section II is a brief description of the landscape of the industry and of the licenses on which open source development depends. Section III considers open source as a challenge to the “one-shop” model of proprietary software development, explaining how and why firms in some cases might profit from collaborative development through open source instead of wholly one-shop proprietary development. Finally, Section IV considers the relationship between open source and the direction and location of innovation in the industry. This Article argues that open source development is more likely to support innovation by larger and better-established firms, where proprietary development is at least relatively more accessible to startup and younger firms.
Water: from clouds to planets
Creators: name: van Dishoeck, Ewine F.
name: Bergin, Edwin A.
name: Lis, Dariusz C.
name: Lunine, Jonathan I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Results from recent space missions, in particular Spitzer and Herschel, have lead to significant progress in our understanding of the formation and transport of water from clouds to disks, planetesimals, and planets. In this review, we provide the underpinnings for the basic molecular physics and chemistry of water and outline these advances in the context of water formation in space, its transport to a forming disk, its evolution in the disk, and finally the delivery to forming terrestrial worlds and accretion by gas giants. Throughout, we pay close attention to the disposition of water as vapor or solid and whether it might be subject to processing at any stage. The context of the water in the solar system and the isotopic ratios (D/H) in various bodies are discussed as grounding data point for this evolution. Additional advances include growing knowledge of the composition of atmospheres of extra-solar gas giants, which may be influenced by the variable phases of water in the protoplanetary disk. Further, the architecture of extra-solar systems leaves strong hints of dynamical interactions, which are important for the delivery of water and subsequent evolution of planetary systems. We conclude with an exploration of water on Earth and note that all of the processes and key parameters identified here should also hold for exoplanetary systems.
description: 24 pages, 13 figures; updated exoplanet observations references. Accepted for publication as a chapter in Protostars and Planets VI, University of Arizona Press (2014), eds. H. Beuther, R. Klessen, C. Dullemond, Th. Henning
A Probabilistic Model to Determine the Coherence of Texts in Interactive Question Answering Systems
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2018

description: Evaluation plays an important role in interactive question answering systems like many computational linguistics fields. The coherence between the questions and the answers exchanged between the user and the system is one of the important criteria in evaluating these systems. In this paper, a new approach to determine the degree of coherence of generated text by the IQA systems is presented. The proposed model is a probabilistic model in which for feature extraction, the similarity between different N-grams is derived based on four defined criteria. Then using a prediction of the best density function among the 18 functions considered for each feature, a model for determining the coherence is selected. The results of implementation on two databases provided by several interactive question answering systems indicate that the proposed probabilistic model is highly adapted and its accuracy in determining the degree of coherence in the conversation text has been made. The Kolmogorov-Smirnov, Anderson, Darling and Cramer van Meys trials were used to matching or non-matching probability density function. According to the presented results, the probability density factor with the least error was the best performance in determining the coherence of each conversation.
Methodology of Construction and Design of Ontologies: a Case Study of Scientometrics Field
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2018

description: Ontology is a useful tool for organizing resources and on the other hand is a useful tool for the knowledge representation. With the development of semantic web technologies, building and creating ontologies to expedite the process is necessary. The aim of the study is to explain the situation of methodologies, designing scientometrics conceptual model, and steps of ontology construction as ScientometricsOnt. The method of the study is applied research. The research population of the study is book, article, glossary, thesaurus, dissertation, and research projects of the field of scientometrics in Persian language. To collect terms internal databases are used and related resources are searched. For creating scientometrics conceptual model and explaining relationships and individuals domain analysis approach is used. The reliability and validity of scientometrics conceptual model have been approved by experts in the field of scientometrics. The tool for building ontology is Protégé 5 software. The used methodology was OAsys method Bermejo (2007) with some changes. The results revealed that Ontology of scientometrics was formed in eleven major class which has 20 relationships and 100 individuals. This ontology can be a very useful tool for better knowledge representation in this field. Also, Scientometrics ontology can be a basis for extending and developing terms and future concepts in the field.
A Scientometrics Study of Iranian Retracted Papers
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2018

description: This is to study Iranian retracted papers indexed in Web of Science (WOS) in various structural and content-wise aspects from the beginning to 2017, to identify cases that have ended up to retraction, and finally, to investigate the relationship between retraction and publication of these articles. The final research population is 103 papers out of 320872 using scientometrics method with content analysis approach. The result shows that the retraction rate has increased from the year 2008, but there is no significant correlation between this rate and publication rate. The citation rate and international scholarly communication in these articles is very low. Most of the papers have been written by three and more authors and different areas of science have been retracted while pure sciences, engineering and medicine were the most. The highest type of scientific misconducting was plagiarism. In short, there is a significant growth in retraction rate of Iranian papers in WOS.
An Automatic Persian Text Summarization System Based on Linguistic Features and Regression
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2018

description: Considering the vast amount of existing written information and the shortage of time, optimal summarization of books, articles, news reports, etc. on the Web is a major concern of researchers. In this paper, we propose a new approach for Persian single-document summarization based on several linguistic features of text. In our approach after extracting the linguistic features for each sentence, the weight of features is learned by a linear regression method. We select one sentence with maximum score at each step of algorithm. The score of each sentence is calculated based on two factors: first, sum of the weighted features and second, the amount of its similarity to the sentences that are selected for final summary previously. We use an automatic evaluation tool to compare our approach with other existing approaches. The result indicates that our method improves the performance of summarization.
Coexistence of quartets and pairs in even-even $N>Z$ nuclei
Creators: name: Sambataro, M.
name: Sandulescu, N.
name: Gambacurta, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyse the structure of the ground states of even-even $N>Z$ nuclei with nucleons moving in the same major shell and interacting via realistic two-body forces of shell-model type. We express the ground states of these nuclei as a product of a quartet term, which represents the $N = Z$ subsystem, and a pair condensate built with the excess neutrons. The accuracy of this approximation is discussed for nuclei with valence nucleons in the $sd$ and $pf$ major shells.
description: 9 pages, 4 figures
Bankruptcy Reform and the "Sweat Box" of Credit Card Debt
Creators: name: Mann, Ronald
Publisher: name: Columbia University
Year: 2007
Subjects: subject: Bankruptcy
subject: Consumer credit
subject: Finance--Law and legislation
subject: Debtor and creditor
subject: Law
subject: FOS: Law
subject: Finance

description: Those that backed the 2005 bankruptcy reform law argued that it would protect creditors from consumer abuse and lack of financial responsibility. The substantial increase in the number of bankruptcies over the last decade combined with the perception of systemwide abuse apparently convinced legislators from both political parties that the backers had a point. Thus, Congress enacted amendments to the Bankruptcy Code that -- if effective -- would fundamentally change the core policies underlying the consumer bankruptcy system in this country. The rhetoric surrounding the reform debates pressed the idea that if borrowers had to repay more of their debts, creditors would achieve savings that -- through pressures of competition -- would be passed on to consumers in the form of lower interest rates and improved access to credit. This essay addresses some of the problems with this justification and considers what else creditors (and particularly credit card issuers) could have expected to achieve with the new law. Professor Mann argues that the new law will benefit issuers substantially, though not for reasons commonly discussed in the negotiation and drafting of the statute. Means testing alone will not return enough in increased bankruptcy payouts to justify the lobbying expenditures and campaign contributions that led to the statute's enactment. Rather, the most important effect will be to facilitate the credit card lending business model, by slowing the time of inevitable filings by the deeply distressed and allowing issuers to earn greater revenues from those individuals. In a nutshell, the new law does little for creditors once they reach the courthouse. Its foremost effect will be to enable issuers to profit from debt servicing revenues paid by distressed borrowers who are not yet in bankruptcy. For issuers that depend on debt revenues, the benefits of the law could be dramatic.
Tracing the Landscape of Research in Scientometrics and Related Metric Areas
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2018

description: Among the prevalent topics in Knowledge and Information Science, the scientometrics studies are of special interest. Applying co-citation analysis, this study investigated the landscape of research in scientometrics and related metric areas and revealed the fundamental themes of it.\nThe initial data of this study (including scientometrics-related documents) have been extracted from the Web of Science. Following the analysis of author co-citation frequency, correlation matrix, and dendrogram, results indicated that the co-citation pairs of “Garfield-Moed”, “Egghe-Rousseau”, and “Egghe-Hirsch” received the highest frequency among other pairs. Moreover, using hierarchical clustering led to the tracing primary themes in scientometrics research. One of interesting findings in this research is a researcher named “Kousha” which has made a crucial rule in the development of webomtrics’ cluster.
title: Food-Based Businesses and the Creative Class in New England's Post-Industrial Cities
Creators: name: Cigliano, Francesca
Publisher: name: University of Massachusetts Amherst
Year: 2020

description: This master’s thesis examines how the density of food-based businesses in New England’s post-industrial urban neighborhoods relates to neighborhood demographic characteristics. The relationship between food-based businesses and demographic change has been examined in larger metropolitan areas like New York City and Chicago and has found that younger, wealthier, and more highly educated residents tend to live where there are greater densities of food businesses. However, there has been little research on the topic in New England’s post-industrial cities that have historically struggled to attract highly sought knowledge workers. I find that food business density and the share of residents employed in creative class professions is positively correlated in most cases; however, over time, the share of creative class workers and food businesses per capita has a negative relationship. Additionally, the share of residents living below the poverty line and food business densities have a significant and positive relationship. Neighborhood racial composition is a less significant factor, overall. In sum, the findings from this study suggest that food business density and creative class populations have a more nuanced relationship in regional post-industrial cities compared to larger metropolitan areas.
identifying incentives and disincentives factors effects on willingness to share knowledge In online scientific social networks
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2018

description: The current study aimed to develop strategies to improve knowledge sharing on online scientific social networks by identifying incentive and disincentive factors that have effects on willingness to share knowledge.\nApplied research was used to collect data using cluster sampling. The study population consisted of Shiraz University and Persian Gulf University faculties. A sample of 269 persons was determined by Morgan table according to whole population (900 persons). In order to gather data the questionnaire by Zhao was used.\nFindings showed that common vision, factors shared vision with the mean difference 4/82, reciprocity with the mean difference 4/04 and confidence in sharing with the mean difference 3/34, have the most effects and can be used as basis of knowledge sharing development strategies. Social affiliation with an average -0/42 has negative effect to knowledge sharing.\nGiven the positive impact of a shared vision, mutual interaction and confidence in the desire to share knowledge, it is possible by creating specialized scientific social networks to allow the presence of researchers of the same field and with the same realms.
Distal upper extremity disorders due to extensive usage of hand held mobile devices
Creators: name: SHARAN, Deepak
name: MOHANDOSS, Mathankumar
name: RANGANATHAN, Rameshkumar
name: JOSE, Jerrish A
name: RAJKUMAR, Joshua Samuel
Publisher: name: CPH Conference : 11th International Symposium on Human Factors in Organisational Design and Management
Year: 2014

description: The aim of this study was to evaluate the risk factors and clinical features of upper extremity musculoskeletal disorders (MSD) in mobile device users. A report analysis which included 59 subjects between the ages of 5 to 56 years, who were diagnosed to have a MSD affecting the upper extremities was done. All the patients underwent rehabilitation using a sequenced protocol. All the subjects reported pain in the thumb and forearm with associated burning, numbness and tingling around the thenar aspect of the hand, and stiffness of wrist and hand. 24 subjects had symptoms on the right side; 12 on left and 13 had bilateral symptoms. Correlation was found between hand dominance and MSD. 33 subjects complained of onset of symptoms following extensive text messaging. All the subjects were diagnosed to have tendinosis of Extensor Pollicis Longus and Myofascial Pain Syndrome affecting the 1st interossei, thenar group of muscles and Extensor igitorum Communis. 23 of the subjects were senior executives, among these 7 were CEO’s of major multinational companies in India. All the subjects recovered completely
following the rehabilitation.
Formation mechanisms of striations in a filamentary dielectric barrier discharge in atmospheric pressure argon
Creators: name: Jovanović, Aleksandar P.
name: Hoder, Tomáš
name: Höft, Hans
name: Loffhagen, Detlef
name: Becker, Markus M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Formation mechanisms of striations along the discharge channel of a single-filament dielectric barrier discharge (DBD) in argon at atmospheric pressure are investigated by means of a time-dependent, spatially two-dimensional fluid-Poisson model. The model is applied to a one-sided DBD arrangement with a 1.5 mm gap using a sinusoidal high voltage at the powered metal electrode. The discharge conditions are chosen to mimic experimental conditions for which striations have been observed. It is found that the striations form in both half-periods during the transient glow phase, which follows the streamer breakdown phase. The modelling results show that the distinct striated structures feature local spatial maxima and minima in charged and excited particle densities, which are more pronounced during the positive polarity. Their formation is explained by a repetitive stepwise ionisation of metastable argon atoms and ionisation of excimers, causing a disturbance of the spatial distribution of charge carriers along the discharge channel. The results emphasise the importance of excited states and stepwise ionisation processes on the formation of repetitive ionisation waves, eventually leading to striations along the discharge channel.
description: 18 pages, 15 figures, resubmitted to Plasma Sources Science and Technology
Mapping the differential reddening in globular clusters
Creators: name: Bonatto, Charles
name: Campos, Fabíola
name: Oliveira, Kepler S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We build differential-reddening maps for 66 Galactic globular clusters (GCs) with archival HST WFC/ACS F606W and F814W photometry. Because of the different GC sizes (characterised by the half-light radius $R_h$) and distances to the Sun, the WFC/ACS field of view ($200\arcsec\times200\arcsec$) coverage ($R_{obs}$) lies in the range $1\la R_{obs}/R_h\la15$ for about 85% of the sample, with about 10% covering only the inner ($R_{obs}\la R_h$) parts. We divide the WFC/ACS field of view across each cluster in a regular cell grid, and extract the stellar-density Hess diagram from each cell, shifting it in colour and magnitude along the reddening vector until matching the mean diagram. Thus, the maps correspond to the internal dispersion of the reddening around the mean. Depending on the number of available stars (i.e. probable members with adequate photometric errors), the angular resolution of the maps range from $\approx7\arcsec\times7\arcsec$ to $\approx20\arcsec\times20\arcsec$. We detect spatially-variable extinction in the 66 globular clusters studied, with mean values ranging from $\mEBV\approx0.018$ (NGC\,6981) up to $\mEBV\approx0.16$ (Palomar\,2). Differential-reddening correction decreases the observed foreground reddening and the apparent distance modulus but, since they are related to the same value of \EBV, the distance to the Sun is conserved. Fits to the mean-ridge lines of the highly-extincted and photometrically scattered globular cluster Palomar\,2 show that age and metallicity also remain unchanged after the differential-reddening correction, but measurement uncertainties decrease because of the reduced scatter. The lack of systematic variations of \mEBV\ with both the foreground reddening and the sampled cluster area indicates that the main source of differential reddening is interstellar.
description: Accepted by MNRAS
Detection of a Novel, Integrative Aging Process Suggests Complex Physiological Integration
Creators: name: Cohen, Alan A.
name: Milot, Emmanuel
name: Li, Qing
name: Bergeron, Patrick
name: Poirier, Roxane
name: Dusseault-Belanger, Francis
name: Fulop, Tamas
name: Leroux, Maxime
name: Legault, Veronique
name: Metter, E. Jeffrey
name: Fried, Linda P.
name: Ferrucci, Luigi
Publisher: name: Columbia University
Year: 2015
Subjects: Biochemical markers
Aging--Physiological aspects
Aging

description: Many studies of aging examine biomarkers one at a time, but complex systems theory and network theory suggest that interpretations of individual markers may be context-dependent. Here, we attempted to detect underlying processes governing the levels of many biomarkers simultaneously by applying principal components analysis to 43 common clinical biomarkers measured longitudinally in 3694 humans from three longitudinal cohort studies on two continents (Women’s Health and Aging I and II, InCHIANTI, and the Baltimore Longitudinal Study on Aging). The first axis was associated with anemia, inflammation, and low levels of calcium and albumin. The axis structure was precisely reproduced in all three populations and in all demographic sub-populations (by sex, race, etc.); we call the process represented by the axis “integrated albunemia.” Integrated albunemia increases and accelerates with age in all populations, and predicts mortality and frailty -- but not chronic disease -- even after controlling for age. This suggests a role in the aging process, though causality is not yet clear. Integrated albunemia behaves more stably across populations than its component biomarkers, and thus appears to represent a higher-order physiological process emerging from the structure of underlying regulatory networks. If this is correct, detection of this process has substantial implications for physiological organization more generally.
Multilevel analysis of the effect of job characteristics on knowledge sharing mediating role of organizational identification.
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2018

description: Today, the issue of knowledge acquisition and sharing it in the work field, especially in knowledge-based organizations has become more important. A library is a knowledge-oriented organization and the librarians are knowledge workers in the library. So, how to encourage librarians to share their knowledge and self-learning is very important. On the one hand, surveys show that designing work has enormous impact on the organization environment and on the other hand on sharing of knowledge among employees. This study aimed to analyze multilevel impact of job characteristics on knowledge sharing with the mediating role of organizational identification. The current survey is an applied study from the perspective of its objectives and from the viewpoint of data collection can be considered as a descriptive-survey study. Statistical population of the research is all of the librarians in public and academic libraries in the city of Ahwaz. Accordingly, a number of 108 librarians from 16 libraries in the city of Ahwaz were selected as a sample. The results analyzed on the individual level (librarians) showed that organizational identification has a significant and positive impact on knowledge sharing among librarians. Also motivational job characteristics have a significant and positive impact on organizational identification. The findings of multilevel model showed that the variable of group’s level social job characteristics has moderating effect between levels in relationship between the organizational identification and knowledge sharing and the moderating role of social job characteristics in the relationship between motivational job characteristics and organizational identification was rejected.
British Columbia Legislative Assembly sessional clipping book (1931-01)
Creators: name: :Unav
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Law
valueUri: http://id.worldcat.org/fast/993678
subject: FOS: Law
subject: British Columbia. Legislative Assembly
valueUri: http://id.worldcat.org/fast/600765
subject: Politics and government
valueUri: http://id.worldcat.org/fast/1919741

description: These Sessional Clippings books cover the period 1891 to 1972, and include newspaper accounts written by various legislative reporters who covered debates occurring in the British Columbia Legislative Assembly. Transcripts of debates of the Legislative Assembly (Hansard) were not published in B.C. until 1970; hence these "Sessional Clipping Books" augment the "Journals", the record of daily proceedings of the Legislative Assembly. Selected clippings from various newspapers including the Vancouver Sun, the Vancouver Province, the Colonist, and the Times newspapers, relating to the newspaper reports concerning activities of the Legislature. The original sessional clippings books comprise 351 ledger size print volumes, held at the Legislative Library in Victoria BC. The print volumes were microfilmed onto 26 reels in 1977 under a Tri University Libraries (TRIUL) project by Precision Micrographic Services (Vancouver, B.C.), with the permission of the Legislative Library, Victoria, British Columbia. This digital collection was created by scanning the 26 microfilm reels.
Statistical Distance as a Measure of Physiological Dysregulation Is Largely Robust to Variation in Its Biomarker Composition
Creators: name: Cohen, Alan A.
name: Li, Qing
name: Milot, Emmanuel
name: Leroux, Maxime
name: Faucher, Samuel
name: Morissette-Thomas, Vincent
name: Legault, Veronique
name: Fried, Linda P.
name: Ferrucci, Luigi
Publisher: name: Columbia University
Year: 2015
Subjects: Biochemical markers
Aging--Physiological aspects
Aging

description: Physiological dysregulation may underlie aging and many chronic diseases, but is challenging to quantify because of the complexity of the underlying systems. Recently, we described a measure of physiological dysregulation, Dᴍ, that uses statistical distance to assess the degree to which an individual’s biomarker profile is normal versus aberrant. However, the sensitivity of Dᴍ to details of the calculation method has not yet been systematically assessed. In particular, the number and choice of biomarkers and the definition of the reference population (RP, the population used to define a “normal” profile) may be important. Here, we address this question by validating the method on 44 common clinical biomarkers from three longitudinal cohort studies and one cross-sectional survey. Dᴍs calculated on different biomarker subsets show that while the signal of physiological dysregulation increases with the number of biomarkers included, the value of additional markers diminishes as more are added and inclusion of 10-15 is generally sufficient. As long as enough markers are included, individual markers have little effect on the final metric, and even Dᴍs calculated from mutually exclusive groups of markers correlate with each other at r~0.4-0.5. We also used data subsets to generate thousands of combinations of study populations and RPs to address sensitivity to differences in age range, sex, race, data set, sample size, and their interactions. Results were largely consistent (but not identical) regardless of the choice of RP; however, the signal was generally clearer with a younger and healthier RP, and RPs too different from the study population performed poorly. Accordingly, biomarker and RP choice are not particularly important in most cases, but caution should be used across very different populations or for fine-scale analyses. Biologically, the lack of sensitivity to marker choice and better performance of younger, healthier RPs confirm an interpretation of Dᴍ physiological dysregulation and as an emergent property of a complex system.
SADM: Sequence-Aware Diffusion Model for Longitudinal Medical Image Generation
Creators: name: Yoon, Jee Seok
name: Zhang, Chenghao
name: Suk, Heung-Il
name: Guo, Jia
name: Li, Xiaoxiao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Human organs constantly undergo anatomical changes due to a complex mix of short-term (e.g., heartbeat) and long-term (e.g., aging) factors. Evidently, prior knowledge of these factors will be beneficial when modeling their future state, i.e., via image generation. However, most of the medical image generation tasks only rely on the input from a single image, thus ignoring the sequential dependency even when longitudinal data is available. Sequence-aware deep generative models, where model input is a sequence of ordered and timestamped images, are still underexplored in the medical imaging domain that is featured by several unique challenges: 1) Sequences with various lengths; 2) Missing data or frame, and 3) High dimensionality. To this end, we propose a sequence-aware diffusion model (SADM) for the generation of longitudinal medical images. Recently, diffusion models have shown promising results in high-fidelity image generation. Our method extends this new technique by introducing a sequence-aware transformer as the conditional module in a diffusion model. The novel design enables learning longitudinal dependency even with missing data during training and allows autoregressive generation of a sequence of images during inference. Our extensive experiments on 3D longitudinal medical images demonstrate the effectiveness of SADM compared with baselines and alternative methods. The code is available at https://github.com/ubc-tea/SADM-Longitudinal-Medical-Image-Generation.
description: To be published in Information Processing in Medical Imaging 2023 (IPMI 2023)
Data Sharing: International and National Approaches
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2018

description: Information and Communication Technologies (ICTs) have significant role in producing research data in different scientific fields. These data not only lead to generate fields based on research data, but also cause to produce a new paradigm or approach in research which is called Fourth Paradigm or Data Intensive Researches. These researches are based on data sharing by researchers, organizations and scientific societies. These data can be reused by other researchers. Data sharing is considered as a norm in some of scientific fields. The present article, that uses library research method, investigates the approaches, actions, policies and relevant regulations on data sharing in papers, regulations and stakeholder’s websites in scientific and non-scientific databases. Besides national and international organizations, and scientific publishers in the world require data sharing as a condition of publications. Because of the universal agreements and accepting data sharing by many organizations and scientific fields and due to its benefits and applications, it seems that development of this issue can be an important step on science and research policy making and lead to more research impact in the country.
Extending the halo mass resolution of $N$-body simulations
Creators: name: Angulo, Raul E.
name: Baugh, Carlton M.
name: Frenk, Carlos S.
name: Lacey, Cedric G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a scheme to extend the halo mass resolution of N-body simulations of the hierarchical clustering of dark matter. The method uses the density field of the simulation to predict the number of sub-resolution dark matter haloes expected in different regions. The technique requires as input the abundance of haloes of a given mass and their average clustering, as expressed through the linear and higher order bias factors. These quantities can be computed analytically or, more accurately, derived from a higher resolution simulation as done here. Our method can recover the abundance and clustering in real- and redshift-space of haloes with mass below $\sim 7.5 \times 10^{13}h^{-1}M_{\odot}$ at $z=0$ to better than 10%. We demonstrate the technique by applying it to an ensemble of 50 low resolution, large-volume $N$-body simulations to compute the correlation function and covariance matrix of luminous red galaxies (LRGs). The limited resolution of the original simulations results in them resolving just two thirds of the LRG population. We extend the resolution of the simulations by a factor of 30 in halo mass in order to recover all LRGs. With existing simulations it is possible to generate a halo catalogue equivalent to that which would be obtained from a $N$-body simulation using more than 20 trillion particles; a direct simulation of this size is likely to remain unachievable for many years. Using our method it is now feasible to build the large numbers of high-resolution large volume mock galaxy catalogues required to compute the covariance matrices necessary to analyse upcoming galaxy surveys designed to probe dark energy.
description: 11 pages, 7 Figures
Controlling the Electronic Properties of Nanodiamonds Via Surface Chemical Functionalization: A DFT Study
Creators: name: Brown, Noam
name: Hod, Oded
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The electronic properties of chemically functionalized nanodiamonds are studied using density functional theory calculations. HOMO-LUMO gap and relative stabilities are calculated for different surface functionalization schemes and diamond nanocrystal morphologies. The effects of chemical decoration on the size and nature of the HOMO-LUMO gap of the various systems considered are discussed in detail. We conclude that surface chemical functionalization has the potential to become an accessible route for controlling the electronic properties of nanodiamonds.
Causal Mapping in Managing Statistical Outputs with Data Quality Approach
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2018

description: Attribute data quality is important object for each databases. If data quality doesn’t useful, Decisions of organizations will not effective. Quality assurance is the new problem in the quality management. This approach flow to data quality management. Maybe many data are collected but they aren’t have accuracy elemnt. The propose of this paper is recognition data quality concept and dimensions data quality. Managing statistical outputs is one the important dimensions data quality that has seven elements. In this research are explaining the impact them. The method of this paper is DEMATEl. It is one the approach soft operation research. The results of article are shown that assuring accuracy, assuring accuracy and completeness have effect intensity. They are important elements and managers should notice to them.
THE ROLE AND DIFFERENCES OF GENDER IN ATTITUDE TO LEARNING A FOREIGN LANGUAGE
Creators: name: Sharifzoda, Marjona
Publisher: name: Zenodo
Year: 2023

description: This article actively discusses the issue of gender education and upbringing in the modern education system. Due to the fact that single-sex schools do not exist in Uzbekistan, as in a number of countries such as Western Europe and the United States, psychologists and sociologists, by conducting a series of experiments and researches in different schools of gender education, have determined the positive and negative aspects of this form of education. it is stated that conclusions have been made about the parties.
Formulating a Curriculum on Aging and Health for University Undergraduates
Creators: name: Hamerman, David
name: Fried, Linda P.
Publisher: name: Columbia University
Year: 2013
Subjects: Longevity
Health education--Study and teaching (Higher)
Curriculum planning
Curriculum evaluation
Health education
Education, Higher
Aging

description: There is a need in our society to raise the national consciousness about aging, health, and the prospects for longevity, so that many more persons take responsibility for their personal health and understand what we will need in an era of health-care reform to promote health across the life course. We address this imperative by offering a relevant curriculum through a public-health lens, designed especially for university undergraduate students. Unlike the traditional educational focus on graduate students who are already committed to a career in the health professions, the students in our sights have little prior exposure to the course content and are still largely uncertain of their career plans. We believe this proposed course will help students understand aging processes as these evolve over time, understand the opportunities that arise from greater life expectancy, encourage them to promote their own health, and make a social contract to do so for society.