cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Implicit SVD for Graph Representation Learning
Creators: name: Abu-El-Haija, Sami
name: Mostafa, Hesham
name: Nassar, Marcel
name: Crespi, Valentino
name: Steeg, Greg Ver
name: Galstyan, Aram
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Mathematical Software (cs.MS)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Recent improvements in the performance of state-of-the-art (SOTA) methods for Graph Representational Learning (GRL) have come at the cost of significant computational resource requirements for training, e.g., for calculating gradients via backprop over many data epochs. Meanwhile, Singular Value Decomposition (SVD) can find closed-form solutions to convex problems, using merely a handful of epochs. In this paper, we make GRL more computationally tractable for those with modest hardware. We design a framework that computes SVD of \textit{implicitly} defined matrices, and apply this framework to several GRL tasks. For each task, we derive linear approximation of a SOTA model, where we design (expensive-to-store) matrix $\mathbf{M}$ and train the model, in closed-form, via SVD of $\mathbf{M}$, without calculating entries of $\mathbf{M}$. By converging to a unique point in one step, and without calculating gradients, our models show competitive empirical test performance over various graphs such as article citation and biological interaction networks. More importantly, SVD can initialize a deeper model, that is architected to be non-linear almost everywhere, though behaves linearly when its parameters reside on a hyperplane, onto which SVD initializes. The deeper model can then be fine-tuned within only a few epochs. Overall, our procedure trains hundreds of times faster than state-of-the-art methods, while competing on empirical test performance. We open-source our implementation at: https://github.com/samihaija/isvd
Las grandes transparencias: Dada y surrealismo en los libros-collage de Julio Cortázar
Creators: name: Ontoria, Mercedes <1978>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: L-LIN/06 Lingua e letterature ispano-americane

description: The topic of this research is to demonstrate the technical and conceptual connections which can be seen between the style adopted by the Argentinean writer Julio Cortázar (1914-1984) in his “collage” books La vuelta al día en ochenta mundos (1967) and Último round (1969) and with the avant-garde art movements Dada and Surrealism.
THE IMPACT OF HEALTH INPUTS ON HEALTH OUTCOMES IN NIGERIA: A NARDL APPROACH
Creators: name: OSMOND CHIGOZIE AGU
name: ABIEYUWA OHONBA
Publisher: name: Zenodo
Year: 2024
Subjects: Health Inputs, Health Outcomes, Non-linear ARDL, Nigeria.

description: Abstract

This study employs a NARDL technique to examine the intricate relationship between health inputs and health outcomes in Nigeria spanning 2000 to 2023. Drawing on Grossman's health capital theory, the analysis dissects the impact of public and private health expenditures on infant mortality, maternal mortality, life expectancy, and an aggregate health outcome index. Findings reveal unexpected associations, with increases in public health expenditure positively linked to infant mortality rates, while private health expenditure exhibits a negative impact, aligning with theoretical expectations. However, both public and private health expenditures lack significant effects on maternal mortality rates, highlighting the need for targeted interventions in maternal healthcare. Moreover, while private health expenditure significantly contributes to improvements in life expectancy and overall health outcomes, public health expenditure shows no significant effects, indicating potential deficiencies in government healthcare infrastructure and spending allocation. The Granger causality tests reveal no significant causal links between health inputs and health outcomes, except for weak unidirectional causality from infant mortality to private health expenditure and private health expenditure to overall health outcome index. The study recommends targeted public spending, public-private partnerships, improved maternal healthcare, and tailored policies to address regional disparities in healthcare access across Nigeria. 

Jel Classification: H51, I11, P46, N17.
title: Co-Digestion of Cattle Manure and Cheese Whey for Biogas Production and Characterization of Biomass Effluent
Creators: name: Fallon, Dillon
Publisher: name: Utah State University
Year: 2018

description: The Western Dairy Center at Utah State University had recognized through traiing of cheesemaking that a challenge that can exist for farmstead and artisan cheese manufacturing operations is disposal or utilization of the whey that is produced when milk is converted into cheese. Land application of whey is limited and can cause odor problems which would be detrimental to a cheesemaking operation located at the rual-urban interface.
The project provided information in support of a research grant from the Western Sustainable Agribulture Research and Education program that was investigating economics and feasiblity of using anaerobic digestion for treatment of whey and cow manure mixtures. We performed initial trials to determine the level of whey that could be mixed with manure and have satisfactory operation of the digester to produce methane and a biomass. A continuous digester was used to produce biomass material for microbiological and physical testing for its suitability for use as a renewable potting mix or soil conditioner.
The benefits from this research are that we have shown how a value-added product can be made by converting whey and manure into a deodorized biomass that could replace the use of peat moss, which is a non-renewable resource. This can improve the economics of using a bioreactor for whey disposal.
Observation of an anomalous positron abundance in the cosmic radiation
Creators: name: Adriani, O.
name: Barbarino, G. C.
name: Bazilevskaya, G. A.
name: Bellotti, R.
name: Boezio, M.
name: Bogomolov, E. A.
name: Bonechi, L.
name: Bongi, M.
name: Bonvicini, V.
name: Bottai, S.
name: Bruno, A.
name: Cafagna, F.
name: Campana, D.
name: Carlson, P.
name: Casolino, M.
name: Castellini, G.
name: De Pascale, M. P.
name: De Rosa, G.
name: De Simone, N.
name: Di Felice, V.
name: Galper, A. M.
name: Grishantseva, L.
name: Hofverberg, P.
name: Koldashov, S. V.
name: Krutkov, S. Y.
name: Kvashnin, A. N.
name: Leonov, A.
name: Malvezzi, V.
name: Marcelli, L.
name: Menn, W.
name: Mikhailov, V. V.
name: Mocchiutti, E.
name: Orsi, S.
name: Osteria, G.
name: Papini, P.
name: Pearce, M.
name: Picozza, P.
name: Ricci, M.
name: Ricciarini, S. B.
name: Simon, M.
name: Sparvoli, R.
name: Spillantini, P.
name: Stozhkov, Y. I.
name: Vacchi, A.
name: Vannuccini, E.
name: Vasilyev, G.
name: Voronov, S. A.
name: Yurkin, Y. T.
name: Zampa, G.
name: Zampa, N.
name: Zverev, V. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Positrons are known to be produced in interactions between cosmic-ray nuclei and interstellar matter ("secondary production"). Positrons may, however, also be created by dark matter particle annihilations in the galactic halo or in the magnetospheres of near-by pulsars. The nature of dark matter is one of the most prominent open questions in science today. An observation of positrons from pulsars would open a new observation window on these sources. Here we present results from the PAMELA satellite experiment on the positron abundance in the cosmic radiation for the energy range 1.5 - 100 GeV. Our high energy data deviate significantly from predictions of secondary production models, and may constitute the first indirect evidence of dark matter particle annihilations, or the first observation of positron production from near-by pulsars. We also present evidence that solar activity significantly affects the abundance of positrons at low energies.
description: Submitted to Nature, 20 pages, 5 figures, 1 table
AN ECONOMETRIC MODEL OF TOURISM DEMAND IN FRANCE
Creators: name: Botti, Laurent
name: Peypoch, Nicolas
name: Randriamboarison, Rado
name: Solonandrasana, Bernardin
Publisher: name: tourismos
Year: 2021

description: This case study gives an overview of the tourism demand in France by using an econometric model. The study covers the period between 1975 and 2003. Five developed countries have been selected, and the choice of the countries is based upon the fact that continuous data on all relevant variables are available only for those countries. The results show a positive relationship between tourist expenditures and generating country GDP, and a negative relation between tourist expenditures and relative prices.
description: tourismos, Vol. 2 No. 1 (2007)
A theory of international banking expansion
Creators: name: Cleave, James H.
Publisher: name: University of British Columbia
Year: 2010

description: The objective of the present study is to provide three sets of prescriptions to enable persons to retire well— prescriptions for the individual, the organization and the social policy makers. These prescriptions follow extensive review of the research literature in order to identify the major factors which lead to retiring well and those which result in retiring badly. A sub-theme of the review is an examination of the major stereotypes and myths concerning retirement and aging and to show that often they prevent an enlightened and constructive approach to retirement. A special note is included which concerns those most apt to retire badly. The main thrust of this study is toward the development of an optimal, comprehensive retirement preparation model of which the three prescriptions form the central part. This is a practical model, ready for implementation. Since the body of knowledge in the area is far from complete and since research reports on aging continue to be published in quantity, it would be premature to try to present an optimal model now. The model which is presented is consistent with the current body of knowledge but it is flexible enough to allow for further development and refinement as new findings are published. A number of recommendations are made for the future. These include both research needs and suggestions for broad administrative action toward the objective of enabling as many people as possible to retire well.
Is the Hemispheric Asymmetry of Monthly Sunspot Area an Irregular Process with Long-Term Memory?
Creators: name: Das, Ratul
name: Ghosh, Aparup
name: Karak, Bidya Binay
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The hemispheric asymmetry of the sunspot cycle is a real feature of the Sun. However, its origin is still not well understood. Here we perform nonlinear time series analysis of the sunspot area (and number) asymmetry to explore its dynamics. By measuring the correlation dimension of the sunspot area asymmetry, we conclude that there is no strange attractor in the data. Further computing Higuchi's dimension, we conclude that the hemispheric asymmetry is largely governed by stochastic noise. However, the behaviour of Hurst exponent reveals that the time series is not completely determined by a memory-less stochastic noise, rather there is a long-term persistence, which can go beyond two solar cycles. Therefore, our study suggests that the hemispheric asymmetry of the sunspot cycle is predominantly originated due to some irregular process in the solar dynamo. The long-term persistence in the solar cycle asymmetry suggests that the solar magnetic field has some memory in the convection zone.
description: Under review in MNRAS
THE IMPACT OF COMMUNICATION IN TEACHING: A TWO-WAY COMMUNICATION APPROACH
Creators: name: Weheba, Dina Mostafa
name: El Kader, Maher Abd
Publisher: name: tourismos
Year: 2021

description: Teaching is an exciting adventure in which both the teacher and the students participate. The Teaching Philosophy includes basic communication approaches; (a) Passion and Communication. (b) Fairness: to understand students as individuals and students. (c) Critical thinking: as lecturers should be challenged to try to deliver course materials in different ways and from different perspectives. (d) Humour and fun; Pleasing students by being approachable will make them more determined to excel in their assignments and lecturers will be inspired by their students. Communication in the teaching process help students attach concepts to their own lives, as students will apply what they learn in class to the world around them. The researcher happened to apply some approaches on random sample of Hotel-Department students, at the Faculty of Tourism and Hotels, University of Alexandra. The importance of this study lies in the new trend of developing the education process nowadays, which will require the participation of students for best results.
description: tourismos, Vol. 2 No. 1 (2007)
Wikang Filipino Tulay sa pag-unawa ng mag-aaral sa mga Asignaturang nakahanay sa wikang Ingles
Creators: name: Dela Cruz, Mary
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 470318
subject: Other Asian languages (excl. South-East Asian)

description: Sa kasalukuyang pananaliksik na ito ay binibigyang linaw at pansin ang kahalagahan ng wikang Filipino sa tuwirang pag-unawa at pagkatuto ng mga mag-aaral na may asignaturang nakahanay ang pagtuturo sa wikang Ingles. Gayundin ang halaga ng wikang Filipino hindi lamang bilag kasangkapan sa pakikipagtalastasan kundi pati bilang kasangkapan sa pagtuturo at pagpapaliwanag para sa mas nauunawang aralin.
Supporting and Controlling Complex Concurrency in Fault- Tolerant Distributed Systems
Creators: name: Xu, Jie
name: Randell, Brian
name: Romanovsky, Alexander
name: Stroud, Robert J.
name: Zorzo, Avelino F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Distributed computing often gives rise to complex concurrent and interacting activities. In some cases several concurrent activities may be working together, i.e. cooperating, to solve a given problem; in other cases, the activities may be independent but needing to share common system resources for which they must compete. Many difficulties and limitations occur in the widely advocated objects and (trans)actions model when it is supposed to support cooperating activities. We have introduced previously the concept of coordinated atomic (CA) actions [Xu et al. 1995]; this paper analyzes and examines the derived objects and CA actions model for constructing fault-tolerant distributed systems and providing unified support for both cooperative and competitive concurrency. Our investigation reveals and clarifies several significant problems that have not previously been studied extensively, including the problem of ensuring consistent access to shared objects from a joint action as opposed to a set of independent actions. Conceptual and implementation-related solutions are proposed and illustrated.
description: 8 pages
The McKean-Vlasov Equation in Finite Volume
Creators: name: Chayes, Lincoln
name: Panferov, Vladislav
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82C26, 35Q82

description: We study the McKean--Vlasov equation on the finite tori of length scale $L$ in $d$--dimensions. We derive the necessary and sufficient conditions for the existence of a phase transition, which are based on the criteria first uncovered in \cite{GP} and \cite{KM}. Therein and in subsequent works, one finds indications pointing to critical transitions at a particular model dependent value, $θ^{\sharp}$ of the interaction parameter. We show that the uniform density (which may be interpreted as the liquid phase) is dynamically stable for $θ< θ^{\sharp}$ and prove, abstractly, that a {\it critical} transition must occur at $θ= θ^{\sharp}$. However for this system we show that under generic conditions -- $L$ large, $d \geq 2$ and isotropic interactions -- the phase transition is in fact discontinuous and occurs at some $θ\t < θ^{\sharp}$. Finally, for H--stable, bounded interactions with discontinuous transitions we show that, with suitable scaling, the $θ\t(L)$ tend to a definitive non--trivial limit as $L\to\infty$.
MEDIA COVERAGE AND PUBLIC TRUST IN THE PAKISTANI MILITARY: LINKING MEDIA AGENDA TO PUBLIC PERCEPTION
Creators: name: MUHAMMAD RIAZ RAZA
name: MUHAMMAD USMAN SAEED
name: RANA BABAR SOHAIL
name: HAFIZ MUHAMMAD SOHAIB NAWAZ
Publisher: name: Zenodo
Year: 2024
Subjects: Media Agenda, Public Agenda, Cable Channels, Public Trust, Military As Saviors, Pro-Democratic, Pakistan.

description: Abstract

The public trust in the military is influenced by personal protection, perception of the military as saviors, pro-democratic orientation, and international security dynamics. The Pakistan military's active involvement in internal politics and direct international dealings with Afghanistan, India, the United States, and Gulf countries has complicated public trust in the institution, highlighting its influential yet controversial role. The present study has been designed to explore the media-public relationship on the matters relating to the military. A mixed-method approach was employed, involving a content analysis of two leading news channels ARY and Geo News over four months. The primetime talk shows were selected through a systematic sampling technique focusing on two significant events - the Army Chief's appointment and the May 9th violent protest supporting the ex-prime minister during the pre- and post-periods of these events. A survey is conducted on the viewers of these channels to trace out the public agenda and public trust in the military. The results reveal significant differences in media coverage and audience perspectives, aligning with their preferred channels. The study contributes to the existing literature by providing empirical data on the interplay between media representation and public trust in the military.
THE IMPACT OF TOURISM ON THE SOCIOCULTURAL STRUCTURE OF CYPRUS
Creators: name: Spanou, Elena
Publisher: name: tourismos
Year: 2021

description: This paper is based on evaluating tourism development in Cyprus, a European nation, and its impacts on the socio-cultural structure of the island. The principal concern of this research is aid in sustaining the resource base on which the tourism development in Cyprus depends on. The paper concludes that in spite of all the negative and positive impacts of tourism on Cyprus it is not yet clear whether the benefits outweigh the costs. The reason for this uncertainty is that most of the research is done on an estimate as there is no empirical data available as yet to support either side of the equation.
description: tourismos, Vol. 2 No. 1 (2007)
Self-diffusion and binary Maxwell-Stefan diffusion coefficients of quadrupolar real fluids from molecular simulation
Creators: name: Ramirez, Gimmy Alex Fernandez
name: Vrabec, Jadran
name: Hasse, Hans
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Self- and binary Maxwell-Stefan diffusion coefficients were determined by equilibrium molecular dynamics simulations with the Green-Kubo method. This study covers self-diffusion coefficients at liquid states for eight pure fluids, i.e. F$_2$, N$_2$, CO$_2$, CS$_2$, C$_2$H$_6$, C$_2$H$_4$, C$_2$H$_2$ and SF$_6$ as well as Maxwell-Stefan diffusion coefficients for three binary mixtures N$_2$+CO$_2$, N$_2$+C$_2$H$_6$ and CO$_2$+C$_2$H$_6$. The fluids were modeled by the two-center Lennard-Jones plus point-quadrupole pair potential, with parameters taken from previous work of our group which were determined solely on the basis of vapor-liquid equilibrium data. Self-diffusion coefficients are predicted with a statistical uncertainty less than 1% and they agree within 2% to 28% with the experimental data. The correction of the simulation data due to the finite size of the system increases the value of the self-diffusion coefficient typically by 10%. If this correction is considered, better agreement with the experimental data can be expected for most of the studied fluids. Maxwell-Stefan diffusion coefficients for three binary mixtures were also predicted, their statistical uncertainty is about 10%. These results were used to test three empirical equations to estimate Maxwell-Stefan diffusion coefficients in binary mixtures, i.e. the equations of Caldwell and Babb, of Darken, and of Vignes. The equations of Caldwell and Babb and of Vignes show qualitatively different behavior of the Maxwell-Stefan diffusion coefficient than that observed in the simulations. In agreement with previous work, the best results are obtained in all cases with the equation of Darken.
title: The Relationship of Gender-Based Microaggressions and Internalized Sexism on Mental Health Outcomes: A Mother-Daughter Study
Creators: name: Feigt, Nicole D.
Publisher: name: Utah State University
Year: 2018

description: Subtle occurrences of discrimination, insults, and slights against gender can impact woman of all ages, although little research has been done on the mental health impacts of these events on adolescents or middle-aged women. Additionally, a person’s own views on sex roles and sexism may impact how these events affect them. The following study examined the relationship between mothers and daughters on variables related to ambivalent sexism, gender-based microaggressions, and anxiety and depression. One hundred two mothers and their adolescent daughters completed various online surveys through the use of a Qualtrics panel. The sample was fairly representative, with respondents varying in social class, age, religious preference, and geographical location. Mother and daughter participants separately completed various online measures related to microaggressions, sexism, and mental health. Results indicated that mothers and daughters reports of mental health outcomes, experiences of microaggressions, and ambivalent sexism were very correlated. Additionally, for both mothers and daughters, there was a positive correlation between experiences of gender-based microaggressions and increased symptoms of anxiety and depression. A moderation analysis was done to see if a women’s level of benevolent sexism acted as a moderator to the relationship between experiences of microaggressions and mental health. Although no significant interactions were found, the results did approach significance for the dependent variable of mother’s depression. This study highlights the occurrence and impact of gender-based microaggressions on two under-researched populations, and also begins to explore how views about gender roles may interact with mental health.
title: tourismos, Vol. 2 No. 1 (2007)
Creators: name: Tourismos
Publisher: name: University of the Aegean
Year: 2007

description: 24th EuroCHRIE Congress: In Search of Excellence for tomorrow’s Tourism, Travel and Hospitality...167-169 Coastal Mass Tourism: Diversification and Sustainable Development in Southern Europe1...163-166 THE IMPACT OF TOURISM ON THE SOCIOCULTURAL STRUCTURE OF CYPRUS...145-162 THE IMPACT OF COMMUNICATION IN TEACHING: A TWO-WAY COMMUNICATION APPROACH...127-143 AN ECONOMETRIC MODEL OF TOURISM DEMAND IN FRANCE...115-126 CITY COMPETITION AND URBAN MARKETING: THE CASE OF TOURISM INDUSTRY IN ATHENS...89-114 SERVICE QUALITY OF TRAVEL AGENTS: THE VIEW POINT OF TOURISTS IN EGYPT...63-87 SUSTAINABLE TOURISM: THE ENVIRONMENTAL IMPACT OF “UNDETECTED” TOURISM...47-62 MISSION IMPOSSIBLE? MOTIVATING HOSPITALITY MANAGERS IN CYPRUS...31-46 WHAT’S IN A NAME? A COMPARATIVE ANALYSIS OF SURF AND SNOW BRAND PERSONALITIES...11-29 Initial Pages & Editorial...1-10
Feasibility of extracting a $Σ^-$ admixture probability in the neutron-rich $^{10}_Λ$Li hypernucleus
Creators: name: Harada, T.
name: Umeya, A.
name: Hirabayashi, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We examine theoretically production of the neutron-rich $^{10}_Λ$Li hypernucleus by a double-charge exchange ($π^-$, $K^+$) reaction on a $^{10}$B target with distorted-wave impulse approximation calculations. The result shows that the magnitude and shape of the calculated spectrum at 1.20 GeV/c by a one-step mechanism $π^-p \to K^+ Σ^-$ via $Σ^-$ doorways caused by a $Σ^-p \leftrightarrow Λn$ coupling can explain the recent experimental data, and the $Σ^-$ admixture probability in $^{10}_Λ$Li is found to be the order of 10$^{-1}$ %. The ($π^-$, $K^+$) reaction provides a capability of extracting properties of wave functions with $Λ$-$Σ$ coupling effects in neutron-rich nuclei, together with the reaction mechanism.
description: 13 pages, 3 figures
title: Quantum Mechanical Studies of N-H···N Hydrogen Bonding in Acetamide Derivatives and Amino Acids
Creators: name: Lundell, Sandra J.
Publisher: name: Utah State University
Year: 2018

description: Proteins are made of vast chains of amino acids that twist and fold into intricate designs. These structures are held in place by networks of noncovalent interactions. One of these, the hydrogen bond, forms bridges between adjacent pieces of the protein chain and is one of the most important contributors to the shape and stability of proteins. Hydrogen bonds come in all shapes and sizes and a full understanding of these not only aids in our understanding of proteins in general but can bridge the gap to finding cures to many protein-related diseases, such as sickle-cell anemia. The primary aim of this thesis is to discover if a specific type of hydrogen bond, the N-H···N bond, occurs within proteins and if so, if it contributes to the structure and stability of proteins.
Poisoning Knowledge Graph Embeddings via Relation Inference Patterns
Creators: name: Bhardwaj, Peru
name: Kelleher, John
name: Costabello, Luca
name: O'Sullivan, Declan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: We study the problem of generating data poisoning attacks against Knowledge Graph Embedding (KGE) models for the task of link prediction in knowledge graphs. To poison KGE models, we propose to exploit their inductive abilities which are captured through the relationship patterns like symmetry, inversion and composition in the knowledge graph. Specifically, to degrade the model's prediction confidence on target facts, we propose to improve the model's prediction confidence on a set of decoy facts. Thus, we craft adversarial additions that can improve the model's prediction confidence on decoy facts through different inference patterns. Our experiments demonstrate that the proposed poisoning attacks outperform state-of-art baselines on four KGE models for two publicly available datasets. We also find that the symmetry pattern based attacks generalize across all model-dataset combinations which indicates the sensitivity of KGE models to this pattern.
description: Joint Conference of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (ACL-IJCNLP 2021)
Tailoring flat bands and topological phases in a multi-strand Creutz network
Creators: name: Mukherjee, Amrita
name: Nandy, Atanu
name: Sil, Shreekantha
name: Chakrabarti, Arunava
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We prove that, a suitable correlation between the system parameters can trigger topological phase transition and flat bands in a multi strand Creutz ladder network, when a staggered second neighbor interaction is included along the x axis. An appropriate change of basis maps such a finite N strand mesh into N or N 1 decoupled Su Schrieffer Heeger chains, depending onNeven or odd. A simple intuitive method, using a real space decimation scheme turns out to be very powerful in analytically extracting the flat bands, explaining their degeneracy or a lifting of the same. Our results are analytically exact, and may inspire experiments in photonics and ultracold atomic systems.
description: 9 pages, 8 figures
title: The Effects of Didactic Training & Behavioral Skills Training on Staff Implementation of a Stimulus Preference Assessment with Adults with Disabilities
Creators: name: Smith, Sandra G.
Publisher: name: Utah State University
Year: 2018

description: This study assessed the effects of BST and DT on the treatment integrity scores of four direct care staff (DCS) conducting a multiple stimulus without replacement assessment with confederates. A concurrent multiple baseline design showed that BST was effective in achieving mastery level treatment integrity scores for all participants and that these scores generalized to adults with disabilities and remained at mastery levels after a 2-week generalization phase.
title: Non-Contact Evaluation Methods for Infrastructure Condition Assessment
Creators: name: Dorafshan, Sattar
Publisher: name: Utah State University
Year: 2018

description: The United States infrastructure, e.g. roads and bridges, are in a critical condition. Inspection, monitoring, and maintenance of these infrastructure in the traditional manner can be expensive, dangerous, time-consuming, and tied to human judgment (the inspector). Non-contact methods can help overcoming these challenges. In this dissertation two aspects of non-contact methods are explored: inspections using unmanned aerial systems (UASs), and conditions assessment using image processing and machine learning techniques. This presents a set of investigations to determine a guideline for remote autonomous bridge inspections.
Analysis of the Breakthrough Listen signal of interest blc1 with a technosignature verification framework
Creators: name: Sheikh, Sofia Z.
name: Smith, Shane
name: Price, Danny C.
name: DeBoer, David
name: Lacki, Brian C.
name: Czech, Daniel J.
name: Croft, Steve
name: Gajjar, Vishal
name: Isaacson, Howard
name: Lebofsky, Matt
name: MacMahon, David H. E.
name: Ng, Cherry
name: Perez, Karen I.
name: Siemion, Andrew P. V.
name: Webb, Claire Isabel
name: Zic, Andrew
name: Drew, Jamie
name: Worden, S. Pete
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: The aim of the search for extraterrestrial intelligence (SETI) is to find technologically-capable life beyond Earth through their technosignatures. On 2019 April 29, the Breakthrough Listen SETI project observed Proxima Centauri with the Parkes 'Murriyang' radio telescope. These data contained a narrowband signal with characteristics broadly consistent with a technosignature near 982 MHz ('blc1'). Here we present a procedure for the analysis of potential technosignatures, in the context of the ubiquity of human-generated radio interference, which we apply to blc1. Using this procedure, we find that blc1 is not an extraterrestrial technosignature, but rather an electronically-drifting intermodulation product of local, time-varying interferers aligned with the observing cadence. We find dozens of instances of radio interference with similar morphologies to blc1 at frequencies harmonically related to common clock oscillators. These complex intermodulation products highlight the necessity for detailed follow-up of any signal-of-interest using a procedure such as the one outlined in this work.
description: 15 pages of main paper followed by 19 pages of supplementary material; 22 figures total; published open-access in Nature Astronomy
title: Engrosamiento de la pared del intestino delgado: Más allá de la enfermedad de Crohn.
Creators: name: Cabeza Carreto, Arturo
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Abdomen
subject: CT

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Elintestino delgado (ID) es elsegmento del tracto digestivo más díficil de estudiar. El ID es la única porción del tracto digestivo en la que la endoscopia convencional no es aún una alternativa práctica y rutinaria que nos permita su...
THE MITIGATION OF SALT-STRESS OF VIGNA RADIATA (L.) BY AUXIN-PRODUCING SALT-TOLERANT RHIZOBACTERIA
Creators: name: RABIYA IKRAM
name: BASHARAT ALI
Publisher: name: Zenodo
Year: 2024
Subjects: Auxin Production, Halo Tolerance, Rhizobacteria, Proline, Salinity, Vigna Radiata, Biodiversity.

description: Abstract

Halotolerant microorganisms have the ability to mitigate the deleterious impacts of salinity on the plant’s physiological attributes. The major objective of this study was to evaluate the bacterial diversity associated with Suaeda fruticosa (Forssk L.) growing in saline soils.  Salt-tolerant bacteria were screened for their potential to promote the growth of Vigna radiata under saline conditions. Bacterial strains isolated in this study were found to tolerate NaCl up to 1.5M. These strains were found positive for the production of indole-3 acetic acid (IAA), HCN production, cellulose activity, nitrate reduction, and nitrogenase activity. 16S rRNA sequencing showed that strains belong to eight different bacterial genera including Brachybacterium, Oceanobacillus, Halomonas, Microbacterium, Kushneria, Kocuria, Rothia, and Staphylococcus. Bacterial strain Halomonas caseinilytica DO, Halomonas elongate S3W and Oceanobacillus picturae Ra6S3 showed 70.46 µg/ml, 113.53 µg/ml and 73.25 113.53 µg/ml of auxin production under 1M salinity stress in the presence of 1000 µg/ml of L-tryptophane whereas, at 1.5M salinity stress Halomonas elongate S3W showed 93.17 113.53 µg/ml of IAA production.  In pot trials with Brachybacterium paraconglomeratum (Ra11S4), Staphlococcus equorm (Rb8S4), Rothia endophytica (Rb2S6) recorded increases in fresh biomass up to 2.4 folds and number of pods up to 2.1folds for the plant Vigna radiata.  These strains can be used as promising bacterial inoculants in sustainable agriculture for the mitigation of salinity stress.
Evidence for spin current driven Bose-Einstein condensation of magnons
Creators: name: Divinskiy, B.
name: Merbouche, H.
name: Demidov, V. E.
name: Nikolaev, K. O.
name: Soumah, L.
name: Gouéré, D.
name: Lebrun, R.
name: Cros, V.
name: Youssef, Jamal Ben
name: Bortolotti, P.
name: Anane, A.
name: Demokritov, S. O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The quanta of magnetic excitations - magnons - are known for their unique ability to undergo Bose-Einstein condensation at room temperature. This fascinating phenomenon reveals itself as a spontaneous formation of a macroscopic coherent state under the influence of incoherent stimuli. Spin currents have been predicted to offer electronic control of magnon Bose-Einstein condensates, but this phenomenon has not been experimentally evidenced up to now. Here we experimentally show that current-driven Bose-Einstein condensation can be achieved in nanometer-thick films of magnetic insulators with tailored dynamic magnetic nonlinearities and minimized magnon-magnon interactions. We demonstrate that, above a certain threshold, magnons injected by the spin current overpopulate the lowest-energy level forming a highly coherent spatially extended state. By accessing magnons with essentially different energies, we quantify the chemical potential of the driven magnon gas and show that, at the critical current, it reaches the energy of the lowest magnon level. Our results pave the way for implementation of integrated microscopic quantum magnonic and spintronic devices.
description: This is a preprint of an article published in Nature Communications. The final authenticated version is available online at: https://doi.org/10.1038/s41467-021-26790-y
WHAT’S IN A NAME? A COMPARATIVE ANALYSIS OF SURF AND SNOW BRAND PERSONALITIES
Creators: name: De Burgh-Woodman, Hélène
name: Brace-Govan, Jan
Publisher: name: tourismos
Year: 2021

description: This paper performs a comparative analysis of niche brands. Within surfing and snowsport markets, key companies, with distinctive brand names, market specifically to their respective subcultures. Each brand embodies an individuated personality, markets according to unique criteria and evolves through a variety of methods including advertising, event sponsorship, film production and concept stores. This paper investigates the manner in which brand names are apprehended by participants, what difficulties may arise in managing brands and suggest how marketers may cultivate brand image more perceptively since the represented brand personality affects company status in or appeal to these highly discriminating subcultural groups.
description: tourismos, Vol. 2 No. 1 (2007)
title: Multi-Resolution Analysis Using Wavelet Basis Conditioned on Homogenization
Creators: name: Lasisi, Abibat Adebisi
Publisher: name: Utah State University
Year: 2018

description: This dissertation considers an approximation strategy using a wavelet reconstruction scheme for solving elliptic problems. The foci of the work are on (1) the approximate solution of differential equations using multiresolution analysis based on wavelet transforms and (2) the homogenization process for solving one and two-dimensional problems, to understand the solutions of second order elliptic problems. We employed homogenization to compute the average formula for permeability in a porous medium. The structure of the associated multiresolution analysis allows for the reconstruction of the approximate solution of the primary variable in the elliptic equation. Using a one-dimensional wavelet reconstruction algorithm proposed in this work, we are able to numerically compute the approximations of the pressure variables. This algorithm can directly be applied to elliptic problems with discontinuous coefficients.We also implemented Java codes to solve the two dimensional elliptic problems using our methods of solutions. Furthermore, we propose homogenization wavelet reconstruction algorithm, fast transform and the inverse transform algorithms that use the results from the solutions of the local problems and the partial derivatives of the pressure variables to reconstruct the solutions.
title: Ecografía Doppler: Principios básicos y guía práctica para residentes
Creators: name: Tirapu Tapiz, Marta
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Vascular
subject: Ultrasound
subject: Ultrasound-Colour Doppler
subject: Ultrasound-Spectral Doppler

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
(1) Revisar los principios básicos de ecografía Doppler. (2) Señalar los parámetros que contribuyen a la calidad del estudio de ecografía Doppler. (3) Proporcionar consejos prácticos y guías para conseguir un estudio de ecografía Doppler de...
MISSION IMPOSSIBLE? MOTIVATING HOSPITALITY MANAGERS IN CYPRUS
Creators: name: Zopiatis, Anastasios
name: Constanti, Panikkos
Publisher: name: tourismos
Year: 2007

description: The hospitality industry is renowned for its ‘pressure cooker’ environment of long hours and high turnover, particularly among front line staff. However, there have been relatively few investigations into the life of supervisors and managers in the industry. Utilizing surveys, the study set out to identify the motivational factors that directly impact on this category of employees. Factors such as appreciation, interesting job, good working conditions, career opportunities and loyalty by the organization were ranked as the top five motivators. The findings challenge a long-standing perception of Cypriot hospitality stakeholders who suggest that money is the major motivator. It was also found that the motivators are the same irrespective of gender, and age. However, these are likely to change as one moves within the management hierarchy. The findings are primarily intended for companies within a Cyprus framework, and therefore the research is focused on the needs for these organizations. However, there are likely to be parallels for hospitality organizations outside Cyprus.
description: tourismos, Vol. 2 No. 1 (2007)
A STUDY IN OPTIMISING AND FORECASTING EMPLOYEE PERFORMANCE USING SELECTED MACHINE LEARNING MODELS
Creators: name: ABDUL RAHMAN J
name: Dr. KRISHNA PRIYA
Publisher: name: Zenodo
Year: 2024
Subjects: Employee performance, Machine learning.

description: Abstract

The purpose of this article is to investigate the impact that machine learning has had on the conventional human resource environment, particularly with regard to employee reviews. Machine learning provides a wide range of data analysis skills, which is something that businesses are actively looking for in order to create more effective methods for evaluating their employees. Because of these algorithms, productivity measures, project achievements, and qualitative input are much improved which results in the creation of performance images that is both complete and objective. The researcher investigates the benefits and drawbacks of implementing this digital giant into human resources. For the purpose of improving performance assessments in contemporary businesses, it is essential to strike the ideal balance between human expertise and technological advancements. The age-old practice of subjective evaluations is becoming increasingly out of date in the ever-changing world of the modern workplace, where results are of the utmost importance. In this study, we investigate the impact that machine learning has had on performance evaluations in human resource management (HRM), focusing on its capacity to deliver assessments that are both objective and nuanced. This study investigates the complexities and potential dangers of machine learning in human resource management (HRM), with the primary objective of achieving performance evaluations that are accurate and equitable. The purpose of this research endeavour is to investigate the sophistication of this method while also locating any possible mistakes. For businesses that want to maximise the potential of their employees by incorporating both technological and human expertise into performance evaluations, this paper provides a detailed roadmap that can help them achieve their goals. The performance of a company's employees is a significant factor in determining the company's potential for commercial success and expansion. On the other hand, the evaluation of the staff's’ performance up to this point has been insufficient and downright disappointing. In order to ensure that an employee's performance is evaluated and predicted in a fair manner, this study investigates several external aspects that are related with their lives, including those that are physical and environmental, social, and economical. My research focuses on building an objective algorithmic way for artificial intelligence to forecast future employee performance. This method takes into consideration a variety of environmental parameters, including physical, social, and economic characteristics.
Krein Spaces in de Sitter Quantum Theories
Creators: name: Gazeau, Jean-Pierre
name: Siegl, Petr
name: Youssef, Ahmed
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Experimental evidences and theoretical motivations lead to consider the curved space-time relativity based on the de Sitter group $SO_0(1,4)$ or $Sp(2,2)$ as an appealing substitute to the flat space-time Poincare relativity. Quantum elementary systems are then associated to unitary irreducible representations of that simple Lie group. At the lowest limit of the discrete series lies a remarkable family of scalar representations involving Krein structures and related undecomposable representation cohomology which deserves to be thoroughly studied in view of quantization of the corresponding carrier fields. The purpose of this note is to present the mathematical material needed to examine the problem and to indicate possible extensions of an exemplary case, namely the so-called de Sitterian massless minimally coupled field, i.e. a scalar field in de Sitter space-time which does not couple to the Ricci curvature.
SUSTAINABLE TOURISM: THE ENVIRONMENTAL IMPACT OF “UNDETECTED” TOURISM
Creators: name: Romita, Tullio
Publisher: name: tourismos
Year: 2021

description: In the next twenty years tourism will grow strongly and two thousand million tourists will invade present and future tourist destinations. As a consequence, tourism creates unpredictable impacts on the environment. In this context an important role is played by “undetected tourism”. This term is referred to the unorganized tourism, which takes places directly between tourists and local communities, a process still little analysed by official studies and statistics. The undetected tourism in some western areas, e.g. in Southern Italy, is socially and economically more important than the organized one. It generates hidden economical flows. Moreover, this kind of tourism causes serious damages to the environment, with decay in the quality of life. The paper proposes some corrective measures for its promotion in Southern Italy.
description: tourismos, Vol. 2 No. 1 (2007)
Housing policy, tenure choice and the demand for housing in greater Vancouver
Creators: name: Dale-Johnson, David Terrance
Publisher: name: University of British Columbia
Year: 2010

description: In studying population, the migration component is the most difficult component to analyze effectively. The main purpose of this thesis is to analyze and quantify the migration flow between British Columbia and other Canadian provinces during the period 1966-70 and develop a model which is capable of forecasting this inter-provincial flow with some known probability of accuracy. In this regard the different data sources which are available are evaluated. Income Tax Return data are found to be more reliable and are available in more detail; therefore, this source is used. To find the best possible method of measuring migration flow different methods of migration were considered and theoretical models were found to be more sophisticated and accurate than others. Amongst these various theoretical models, the push-pull theories are the basis of the most theoretical hypotheses of this model. Linear step-wise and ordinary multiple regressions analysis, using computer "UBC TRIP" package' are the methods of investigation used to test the hypotheses. The two complete and simpler models of in- and out-migration and the complete model of net-migration for B.C. during 1966-70 have been tested. The combination of cross-section and time series analysis with 30 observations for 5 years and 6 regions in Canada (B.C. excluded) at 1 percent significant level with the total of 8 independent variables are the major components underlying the operational results. Distance, unemployment rate, climate, friends and relatives in other provinces were found to be the best explanatory variables. Also, climate was found to be an important variable to attract the migrants to B.C., while high unemployment rate has been the major factor of out-migration from B.C. Finally, some area for further research toward improving the quality of data which can have significant outcome on modelling internal migrations have been sketched.