cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measuring Outcomes in Healthcare Economics using Artificial Intelligence: with Application to Resource Management
Creators: name: Huang, Chih-Hao
name: Batarseh, Feras A.
name: Boueiz, Adel
name: Kulkarni, Ajay
name: Su, Po-Hsuan
name: Aman, Jahan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The quality of service in healthcare is constantly challenged by outlier events such as pandemics (i.e. Covid-19) and natural disasters (such as hurricanes and earthquakes). In most cases, such events lead to critical uncertainties in decision making, as well as in multiple medical and economic aspects at a hospital. External (geographic) or internal factors (medical and managerial), lead to shifts in planning and budgeting, but most importantly, reduces confidence in conventional processes. In some cases, support from other hospitals proves necessary, which exacerbates the planning aspect. This manuscript presents three data-driven methods that provide data-driven indicators to help healthcare managers organize their economics and identify the most optimum plan for resources allocation and sharing. Conventional decision-making methods fall short in recommending validated policies for managers. Using reinforcement learning, genetic algorithms, traveling salesman, and clustering, we experimented with different healthcare variables and presented tools and outcomes that could be applied at health institutes. Experiments are performed; the results are recorded, evaluated, and presented.
description: This paper is published at Cambridge University Press Journal of Data & Policy
title: tourismos, Vol. 1 No. 1 (2006)
Creators: name: Tourismos
Publisher: name: University of the Aegean
Year: 2006

description: Managing Change in Tourism and Hospitality...127-128 International Dialogue: Global, European, National and Multicultural Dimensions of Tourism...123-125 Tourism, Recreation and Climate Change...117-121 STRATEGIC EMPLOYEE TRAINING AND DEVELOPMENT IN CHINESE LUXURY HOTELS...109-116 PRODUCT DESIGN DECISIONS FOR DEVELOPING NEW TOURIST DESTINATIONS: THE CASE OF RHODOPI MOUNTAIN...91-108 AN EMPIRICAL STUDY OF PEACE TOURISM TRENDS BETWEEN POLITICALLY DIVIDED SOUTH AND NORTH KOREA: PAST, PRESENT & FUTURE...73-90 TRANSPORT CAPITAL AS A DETERMINANT OF TOURISM DEVELOPMENT: A TIME SERIES APPROACH...53-71 FROM TRAVELLERS ACCOUNTS TO TRAVEL BOOKS AND GUIDE BOOKS: THE FORMATION OF A GREEK TOURISM MARKET IN THE 19th CENTURY...27-52 SIGNIFYING PRACTICES AND THE CO-TOURIST...9-26 Initial Pages & Editorial...1-8
Open Strings on D-Branes and Hagedorn Regime in String Gas Cosmology
Creators: name: Arslanargin, Ayse
name: Kaya, Ali
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider early time cosmic evolution in string gas cosmology dominated by open strings attached to D-branes. After reviewing statistical properties of open strings in D-brane backgrounds, we use dilaton-gravity equations to determine the string frame fields. Although, there are distinctions in the Hagedorn regime thermodynamics and dilaton coupling as compared to closed strings, it seems difficult to avoid Jeans instability and assume thermal equilibrium simultaneously, which is already a known problem for closed strings. We also examine characteristics of a possible subsequent large radius regime in this setup.
description: 24 pages, 3 figures, revtex4, v2: comments and references added, to appear in Phys. Rev. D
Outflow - Core Interaction in Barnard 1
Creators: name: Hiramatsu, Masaaki
name: Hirano, Naomi
name: Takakuwa, Shigehisa
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In order to study how outflows from protostars influence the physical and chemical conditions of the parent molecular cloud, we have observed Barnard 1 (B1) main core, which harbors four Class 0 and three Class I sources, in the CO (J=1-0), CH3OH (J_K=2_K-1_K), and the SiO (J=1-0) lines using the Nobeyama 45 m telescope. We have identified three CO outflows in this region; one is an elongated (~ 0.3 pc) bipolar outflow from a Class 0 protostar B1-c in the submillimeter clump SMM 2, another is a rather compact (~ 0.1 pc) outflow from a Class I protostar B1 IRS in the clump SMM 6, and the other is an extended outflow from a Class I protostar in SMM 11. In the western lobe of the SMM 2 outflow, both the SiO and CH3OH lines show broad redshifted wings with the terminal velocities of 25 km/s and 13 km/s, respectively. It is likely that the shocks caused by the interaction between the outflow and ambient gas enhance the abundance of SiO and CH3OH in the gas phase. The total energy input rate by the outflows (1.1x10^{-3} Lsun) is smaller than the energy loss rate (8.5x10^{-3} Lsun$) through the turbulence decay in B1 main core, which suggests that the outflows can not sustain the turbulence in this region. Since the outflows are energetic enough to compensate the dissipating turbulence energy in the neighboring, more evolved star forming region NGC 1333, we suggest that the turbulence energy balance depends on the evolutionary state of the star formation in molecular clouds.
description: 34 pages, 8 figures, accepted for the publication in ApJ
A Survey on AI Assurance
Creators: name: Batarseh, Feras A.
name: Freeman, Laura
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Artificial Intelligence (AI) algorithms are increasingly providing decision making and operational support across multiple domains. AI includes a wide library of algorithms for different problems. One important notion for the adoption of AI algorithms into operational decision process is the concept of assurance. The literature on assurance, unfortunately, conceals its outcomes within a tangled landscape of conflicting approaches, driven by contradicting motivations, assumptions, and intuitions. Accordingly, albeit a rising and novel area, this manuscript provides a systematic review of research works that are relevant to AI assurance, between years 1985 - 2021, and aims to provide a structured alternative to the landscape. A new AI assurance definition is adopted and presented and assurance methods are contrasted and tabulated. Additionally, a ten-metric scoring system is developed and introduced to evaluate and compare existing methods. Lastly, in this manuscript, we provide foundational insights, discussions, future directions, a roadmap, and applicable recommendations for the development and deployment of AI assurance.
description: This paper is published at Springer's Journal of Big Data
Collisional evolution of eccentric planetesimal swarms
Creators: name: Wyatt, M. C.
name: Booth, M.
name: Payne, M. J.
name: Churcher, L. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Models for the steady state collisional evolution of low eccentricity planetesimal belts identify debris disks with hot dust at 1AU, like eta Corvi and HD69830, as anomalous since collisional processing should have removed most of the planetesimal mass over their >1 Gyr lifetimes. This paper looks at the effect of large planetesimal eccentricities (e>>0.3) on their collisional lifetime and the amount of mass that can remain at late times M_{late}. For an axisymmetric planetesimal disk with common pericentres and eccentricities e, we find that M_{late} \propto e^{-5/3}(1+e)^{4/3}(1-e)^{-3}. For a scattered disk-like population (i.e., common pericentres), in the absence of dynamical evolution, the mass evolution at late times would be as if only planetesimals with the largest eccentricity were present. Despite the increased remaining mass, higher eccentricities do not increase the hot emission from the collisional cascade until e>0.99, partly because most collisions occur near pericentre thus increasing the dust blow-out diameter. However, at high eccentricities (e>0.97) the blow-out population extending out from pericentre may be detectable above the collisional cascade; higher eccentricities also increase the probability of witnessing a recent collision. All of the imaging and spectroscopic constraints for eta Corvi can be explained with a single planetesimal population with pericentre at 0.75AU, apocentre at 150AU, and mass 5M_\oplus; however, the origin of such a high eccentricity population remains challenging. The mid-IR excess to HD69830 can be explained by the ongoing destruction of a debris belt produced in a recent collision in an eccentric planetesimal belt, but the lack of far-IR emission requires small bound grains to be absent from the parent planetesimal belt, possibly due to sublimation.
description: MNRAS in press
Public Policymaking for International Agricultural Trade using Association Rules and Ensemble Machine Learning
Creators: name: Batarseh, Feras A.
name: Gopinath, Munisamy
name: Monken, Anderson
name: Gu, Zhengrong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: General Economics (econ.GN)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: International economics has a long history of improving our understanding of factors causing trade, and the consequences of free flow of goods and services across countries. The recent shocks to the free trade regime, especially trade disputes among major economies, as well as black swan events, such as trade wars and pandemics, raise the need for improved predictions to inform policy decisions. AI methods are allowing economists to solve such prediction problems in new ways. In this manuscript, we present novel methods that predict and associate food and agricultural commodities traded internationally. Association Rules (AR) analysis has been deployed successfully for economic scenarios at the consumer or store level, such as for market basket analysis. In our work however, we present analysis of imports and exports associations and their effects on commodity trade flows. Moreover, Ensemble Machine Learning methods are developed to provide improved agricultural trade predictions, outlier events' implications, and quantitative pointers to policy makers.
description: Paper published at Elsevier's Journal of Machine Learning with Applications https://www.sciencedirect.com/science/article/pii/S2666827021000232
Comprehensive Risk Assessment of Potent API Exposure in Solid Dosage Form Production Using FMEA Methodology
Creators: name: Alam, ABM Mahfuz ul
Publisher: name: Zenodo
Year: 2024
Subjects: OEL
FMEA
Oncology
Risk Assesment

description: In pharmaceutical manufacturing, occupational exposure to potent active pharmaceutical ingredients (APIs) presents a critical health risk, particularly in facilities processing highly potent compounds classified under Occupational Exposure Band (OEB) 4-5. These compounds often have extremely low Occupational Exposure Limits (OELs), requiring robust containment and control measures across various production stages. This risk assessment focuses on the OEL risks associated with granulation, blending, compression, coating, blister packaging, and dispensing processes in the context of solid oral dosage form manufacturing.

Using Failure Modes and Effects Analysis (FMEA), this assessment systematically evaluates the severity, likelihood, and detectability of exposure risks. This method provides a quantitative basis for ranking risks based on the Risk Priority Number (RPN), helping to prioritize engineering and procedural control measures to mitigate exposure and protect operators.
Analog of Astrophysical Magnetorotational Instability in a Couette-Taylor Flow of Polymer Fluids
Creators: name: Boldyrev, Stanislav
name: Huynh, Don
name: Pariev, Vladimir
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We report experimental observation of an instability in a Couette-Taylor flow of a polymer fluid in a thin gap between two coaxially rotating cylinders in a regime where their angular velocity decreases with the radius while the specific angular momentum increases with the radius. In the considered regime, neither the inertial Rayleigh instability nor the purely elastic instability are possible. We propose that the observed "elasto-rotational" instability is an analog of the magnetorotational instability which plays a fundamental role in astrophysical Keplerian accretion disks.
description: 4 pages, 1 figure
Educação Antirracista no Ensino da Biblioteconomia: percepção discente
Creators: name: Ferreira Campos, Arthur
name: Valério, Erinaldo Dias
Publisher: name: figshare
Year: 2021
Subjects: subject: 80706 Librarianship
subject: FOS: Media and communications
subject: Library and Information Studies
subject: 80799 Library and Information Studies not elsewhere classified

description: Apresenta um estudo sobre a importância do ensino sobre as relações raciais brasileira na formação de bibliotecários (as). Afirma que as discussões sobre raça e racismo relacionadas à população negra, tem sido aos poucos inseridas nos currículos em Biblioteconomia. Articula como objetivo, a partir da perceção discente, analisar como o ensino das relações raciais pode contribuir para uma formação que promova à igualdade racial. Realiza pesquisa de cunho bibliográfico, exploratória e estudo de caso. Utiliza como instrumento de coleta de dados, o questionário aplicado a 15 discentes. Argumenta, a partir dos resultados, que os (as) discentes acreditam que a biblioteconomia necessita de estratégias de uma agenda antirracista no meio acadêmico e na socieddade em geral. Finaliza apontando a necessidade de uma discussão transversal que possa alcançar diferentes disciplinas na formação em Biblioteconomia.
Long-lived quantum coherence in photosynthetic complexes at physiological temperature
Creators: name: Panitchayangkoon, Gitt
name: Hayes, Dugan
name: Fransted, Kelly A.
name: Caram, Justin R.
name: Harel, Elad
name: Wen, Jianzhong
name: Blankenship, Robert E.
name: Engel, Gregory S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Photosynthetic antenna complexes capture and concentrate solar radiation by transferring the excitation to the reaction center which stores energy from the photon in chemical bonds. This process occurs with near-perfect quantum efficiency. Recent experiments at cryogenic temperatures have revealed that coherent energy transfer - a wavelike transfer mechanism - occurs in many photosynthetic pigment-protein complexes (1-4). Using the Fenna-Matthews-Olson antenna complex (FMO) as a model system, theoretical studies incorporating both incoherent and coherent transfer as well as thermal dephasing predict that environmentally assisted quantum transfer efficiency peaks near physiological temperature; these studies further show that this process is equivalent to a quantum random walk algorithm (5-8). This theory requires long-lived quantum coherence at room temperature, which never has been observed in FMO. Here we present the first evidence that quantum coherence survives in FMO at physiological temperature for at least 300 fs, long enough to perform a rudimentary quantum computational operation. This data proves that the wave-like energy transfer process discovered at 77 K is directly relevant to biological function. Microscopically, we attribute this long coherence lifetime to correlated motions within the protein matrix encapsulating the chromophores, and we find that the degree of protection afforded by the protein appears constant between 77 K and 277 K. The protein shapes the energy landscape and mediates an efficient energy transfer despite thermal fluctuations. The persistence of quantum coherence in a dynamic, disordered system under these conditions suggests a new biomimetic strategy for designing dedicated quantum computational devices that can operate at high temperature.
description: PDF files, 15 pages, 3 figures (included in the PDF file)
AstroSat observations of long-duration X-ray superflares on active M-dwarf binary EQ Peg
Creators: name: Karmakar, Subhajeet
name: Naik, Sachindra
name: Pandey, Jeewan C.
name: Savanov, Igor S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a comprehensive study of three large long-duration flares detected on an active M-dwarf binary EQ Peg using the Soft X-Ray Telescope of the AstroSat observatory. The peak X-ray luminosities of the flares in the 0.3 - 7 keV band are found to be within ~5 - 10 x 10^{30} erg s^{-1}. The e-folding rise- and decay-times of the flares are derived to be in the range of 3.4 - 11 and 1.6 - 24 ks, respectively. Spectral analysis indicates the presence of three temperature corona with the first two plasma temperatures remain constant during all the flares and the post-flare observation at ~3 and ~9 MK. The flare temperature peaked at 26, 16, and 17 MK, which are 2, 1.3, and 1.4 times more than the minimum value, respectively. The peak emission measures are found to be 3.9 - 7.1 x 10^{53} cm^{-3}, whereas the abundances peaked at 0.16-0.26 times the solar abundances. Using quasi-static loop modeling, we derive loop-lengths for all the flares as 2.5+/-0.5 x 10^{11}, 2.0+/-0.5 x 10^{11}, and 2.5+/-0.9 x 10^{11} cm, respectively. The density of the flaring plasma is estimated to be 4.2+/-0.8 x 10^{10}, 3.0+/-0.7 x 10^{10}, 2.2+/-0.8 x 10^{10} cm^{-3) for flares F1, F2, and F3, respectively. Whereas the magnetic field for all three flares is estimated to be <100 G. The estimated energies of all three flares are ~10^{34-35} erg, putting them in a category of superflare. All three superflares are also found to be the longest duration flares ever observed on EQ Peg.
description: 11 pages, 3 figures, 3 tables, accepted for publication in MNRAS
IMPACTS OF TOURISM PROJECTS OF DEVELOPMENT AGENCIES ON SOCIAL PEACE IN TURKEY
Creators: name: Polat, Naci
Publisher: name: tourismos
Year: 2013

description: Tourism and peace are two important concepts which are influencing each other. These concepts are mostly tackled separately at tourism and peace platforms which are isolated. Since international security issues gain more importance, significance of both concepts are more underlined. Tourism is one of the most employment generator sectors of the world economy. Conflicts and tensions in different regions of the world could diminish number of tourists and tourism workers. Even if tourism can rehabilitate itself rapidly after such problems, scientific researches’ are getting more interested in crises management (Laws, E., B. Prideaux and K. Chon, 2007). In this study, Do’s and Don’ts of tourism projects in less developed regions will be extensively searched with qualitative methods, not after such crises but during the social crises and problems. At the main focus of this study, tourism projects of South Eastern and Eastern Regions of Turkey with high economical and social problem zones will be evaluated. These projects will be especially evaluated in the terms of establishing social peace. Results which are delivered with this study will be used for recommendations for the other problem zones of the world.
description: tourismos, Vol. 8 No. 1 (2013)
Fragmentation of a dynamically condensing radiative layer
Creators: name: Iwasaki, Kazunari
name: Tsuribe, Toru
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this paper, the stability of a dynamically condensing radiative gas layer is investigated by linear analysis. Our own time-dependent, self-similar solutions describing a dynamical condensing radiative gas layer are used as an unperturbed state. We consider perturbations that are both perpendicular and parallel to the direction of condensation. The transverse wave number of the perturbation is defined by $k$. For $k=0$, it is found that the condensing gas layer is unstable. However, the growth rate is too low to become nonlinear during dynamical condensation. For $k\ne0$, in general, perturbation equations for constant wave number cannot be reduced to an eigenvalue problem due to the unsteady unperturbed state. Therefore, direct numerical integration of the perturbation equations is performed. For comparison, an eigenvalue problem neglecting the time evolution of the unperturbed state is also solved and both results agree well. The gas layer is unstable for all wave numbers, and the growth rate depends a little on wave number. The behaviour of the perturbation is specified by $kL_\mathrm{cool}$ at the centre, where the cooling length, $L_\mathrm{cool}$, represents the length that a sound wave can travel during the cooling time. For $kL_\mathrm{cool}\gg1$, the perturbation grows isobarically. For $kL_\mathrm{cool}\ll1$, the perturbation grows because each part has a different collapse time without interaction. Since the growth rate is sufficiently high, it is not long before the perturbations become nonlinear during the dynamical condensation. Therefore, according to the linear analysis, the cooling layer is expected to split into fragments with various scales.
description: 12 pages, 10 figures, accepted for publication in Astronomy & Astrophysics
ANALYSIS OF RURAL TOURISM WEBSITES: THE CASE OF CENTRAL MACEDONIA
Creators: name: Vassiliadis, Chris
name: Fotiadis, Anestis
name: Piper, Linda
Publisher: name: tourismos
Year: 2013

description: Our study of rural tourism enterprises in Central Macedonia uses the functional and technical factors posted on Greek official websites during the year 2009 to explore typical guest expectations based on those posted factors and the perceptions of enterprise owners and/or managers in light of those factors. The evaluation of the hotel 74 rural enterprises in Central Macedonia was based on the examination of the importance of functional and technical quality in rural tourism services. The analysis includes all the rural recorded hotel units in Central Macedonia of Greece. We build our research hypothesis upon the literature and we make the following hypothesis: the functional and technical dimensions can also be applied as important factors for the level of quality the customer perceives from a related web site. Our study contributes to the inference of objective conclusions of the actual quality of the rural tourism hotel units in Central Macedonia.
description: tourismos, Vol. 8 No. 1 (2013)
Composing Energy Services in a Crowdsourced IoT Environment
Creators: name: Lakhdari, Abdallah
name: Bouguettaya, Athman
name: Mistry, Sajib
name: Neiat, andAzadeh Ghari
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: We propose a novel framework for composing crowdsourced wireless energy services to satisfy users' energy requirements in a crowdsourced Internet of Things (IoT) environment. A new energy service model is designed to transform the harvested energy from IoT devices into crowdsourced services. We propose a new energy service composability model that considers the spatio-temporal aspects and the usage patterns of the IoT devices. A multiple local knapsack-based approach is developed to select an optimal set of partial energy services based on the deliverable energy capacity of IoT devices. We propose a heuristic-based composition approach using the temporal and energy capacity distributions of services. Experimental results demonstrate the effectiveness and efficiency of the proposed approach.
description: 15 pages, accepted and to be published in the IEEE Transactions on Services Computing, 2020
Effects of Molecular Crowding on stretching of polymers in poor solvent
Creators: name: Singh, Amit Raj
name: Giri, Debaprasad
name: Kumar, Sanjay
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider a linear polymer chain in a disordered environment modeled by percolation clusters on a square lattice. The disordered environment is meant to roughly represent molecular crowding as seen in cells. The model may be viewed as the simplest representation of biopolymers in a cell. We show the existence of intermediate states during stretching arising as a consequence of molecular crowding. In the constant distance ensemble the force-extension curves exhibit oscillations. We observe the emergence of two or more peaks in the probability distribution curves signaling the coexistence of different states and indicating that the transition is discontinuous unlike what is observed in the absence of molecular crowding.
description: 14 pages, 6 figures
High-accuracy Penning trap mass measurements with stored and cooled exotic ions
Creators: name: Blaum, K.
name: Nagy, Sz.
name: Werth, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The technique of Penning trap mass spectrometry is briefly reviewed particularly in view of precision experiments on unstable nuclei, performed at different facilities worldwide. Selected examples of recent results emphasize the importance of high-precision mass measurements in various fields of physics.
WHEN CAN THE SLEEPING ASIAN TIGER AWAKEN? INTERNATIONAL TOURISM DEVELOPMENT IN MALAYSIA
Creators: name: Huibin, Xing
name: Marzuki, Azizan
Publisher: name: tourismos
Year: 2013

description: The international market is very important for Malaysia’s tourism industry. In the World Tourism rankings from 2005 till 2010, Malaysia was always ranked in the second place for international tourist arrivals in Asia and the Pacific region. However, in terms of the average tourism consumption of international tourist, Malaysia was in the last place. Nevertheless, if the average tourism consumption in Malaysia reaches 1862.20 USD, Malaysia could lead other nations in Asia and the Pacific region. Based on the experiences of international tourism development in Australia, India and Macao, this paper constructs a development pattern of international tourism for Malaysia based on existing conditions and the foundation of international tourism development.
description: tourismos, Vol. 8 No. 1 (2013)
Central Open Sets Tilings
Creators: name: Barnsley, Louisa
name: Barnsley, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 28A80, 05B45, 52C22

description: We introduce a method for constructing collections of subsets of $\mathbb{R}^{n}$, using an iterated function system, a set $T,$ and a cost function. We refer to these collections as tilings. The special case where $T$ is the central open set of an iterated function system that obeys the open set condition is emphasized. The notion of the central open set associated with an iterated function system of similitudes, introduced in 2005 by Bandt, Hung, and Rao, is reviewed. A practical method for calculating pictures of central open sets is described. Some general properties and examples of the tilings are presented.
A bound on the effective gravitational coupling from semiclassical black holes
Creators: name: Brustein, R.
name: Dvali, G.
name: Veneziano, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the existence of semiclassical black holes of size as small as a minimal length scale $l_{UV}$ implies a bound on a gravitational analogue of 't-Hooft's coupling $λ_G(l)\equiv N(l) G_N/l^2$ at all scales $l \ge l_{UV}$. The proof is valid for any metric theory of gravity that consistently extends Einstein's gravity and is based on two assumptions about semiclassical black holes: i) that they emit as black bodies, and ii) that they are perfect quantum emitters. The examples of higher dimensional gravity and of weakly coupled string theory are used to explicitly check our assumptions and to verify that the proposed bound holds. Finally, we discuss some consequences of the bound for theories of quantum gravity in general and for string theory in particular.
description: 16 pages
ECOTOURISM DEVELOPMENT STRATEGIES FOR CARIBBEAN TOURISM DESTINATIONS
Creators: name: Dehoorne, Olivier
name: Tatar, Corina
Publisher: name: tourismos
Year: 2013

description: The paper offers a reflection on tourism issues and development strategies relating to Caribbean destinations, and more particularly, insular destinations. When faced with intense competition from popular destinations around the region, the smaller islands have had to reaffirm their market position. Mass tourism development models have not created the expected knock-on effects for these territories of limited size and vulnerable resources. Any wish for alternative tourism practices, which for this region essentially revolve around the term ecotourism, falls under the scope of badly coordinated tourism development and its ensuing over-concentration of infrastructures, land conflicts and policies of entrenchment, etc. Sharing tourism revenue and accessing resources are key elements to the debate. Development strategies in relation to alternative tourism practices are better able to meet the expectations of host territories.
description: tourismos, Vol. 8 No. 1 (2013)
MPEC 2025-H109 : 2025 HE2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2025 HE2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TOURISM, TERRORISM AND NATION-STATE: SEVIL SOMNEZ RECONSIDERED
Creators: name: Maximiliano, Korstanje
Publisher: name: tourismos
Year: 2013

description: Similarly to the assumption that politics are war by other means, we argue in this conceptual paper that tourism and terrorism are linked and sometimes tourism is terrorism by other means. In sharp contrast to the studies that focuses on terrorism as the main threat of West, we try to explore the historical roots of terrorism from an all-encompassed manner. We therefore, exert a criticism to the Sevil Somnez´s text and provide with an alternative view for policy-makers, scholars and students interested in these types of issues.
description: tourismos, Vol. 8 No. 1 (2013)
ROLE CLARITY, SUPERVISORY SUPPORT, PEER SUPPORT, AND WORK ENGAGEMENT OF CUSTOMER-CONTACT EMPLOYEES IN HOTELS: A FUTURE RESEARCH AGENDA
Creators: name: Suan, Choo Ling
name: Nasurdin, Aizzat
Publisher: name: tourismos
Year: 2013

description: In light of competitive pressures, organizations particularly service providers, need to unleash the talents of their employees in order to accomplish peak performance. Recent efforts have highlighted the importance of work engagement which focuses on human strengths and optimal functioning. Despite its potential beneficial outcomes, research on the prevalence and antecedents of work engagement has remained scarce. Therefore, the objective of this paper is to develop a model linking role clarity, supervisory support, and peer support as predictors of work engagement. A review of the literature to support the proposed model among customer-contact employees within the Malaysian hotel industry is provided.
description: tourismos, Vol. 8 No. 1 (2013)
Proceedings First Workshop on Applicable Formal Methods
Creators: name: Gleirscher, Mario
name: van de Pol, Jaco
name: Woodcock, Jim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: This volume contains the proceedings of the 1st International Workshop on Applicable Formal Methods (AppFM 2021), 23 November 2021, held online as part of the 24th International Symposium on Formal Methods (FM). The aim of the AppFM workshop is to bring together researchers who improve and evaluate existing formal approaches and new variants in practical contexts and support the transfer of these approaches to software engineering practice.
EC 11481-2303 - A Peculiar Subdwarf OB Star Revisited
Creators: name: Rauch, T.
name: Werner, K.
name: Kruk, J. W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: EC 11481-2303 is a peculiar, hot, high-gravity pre-white dwarf. Previous optical spectroscopy revealed that it is a sdOB star with an effective temperature (Teff) of 41790 K, a surface gravity log(g)= 5.84, and He/H = 0.014 by number. We present an on-going spectral analysis by means of non-LTE model-atmosphere techniques based on high-resolution, high-S/N optical (VLT-UVES) and ultraviolet (FUSE, IUE) observations. We are able to reproduce the optical and UV observations simultaneously with a chemically homogeneous NLTE model atmosphere with a significantly higher effective temperature and lower He abundance (Teff = 55000 K, log (g) = 5.8, and He / H = 0.0025 by number). While C, N, and O appear less than 0.15 times solar, the iron-group abundance is strongly enhanced by at least a factor of ten.
description: 8 pages, 11 figures
ATTITUDES TOWARDS TOURISM DEVELOPMENT: RESIDENTS’ PERCEPTIONS IN THE ISLANDS OF LEMNOS AND HYDRA
Creators: name: Dimitriadis, Efstathios
name: Papadopoulos, Dimitrios
name: Kaltsidou, Despoina
Publisher: name: tourismos
Year: 2013

description: Many Greek islands, like Crete, Rhodes, Corfu, Santorini and Mykonos, are included among the most popular tourist destinations worldwide. For Greece and especially for its small islands, tourism constitutes a vital factor of development and prosperity. Our study is concentrated on two, not so popular, Greek islands (Hydra and Lemnos) with different characteristics and focuses on residents’ attitudes and perceptions about tourism development. Based on a sample of 400 residents of Hydra and Lemnos, we find that the economic parameters contribute significant on the perceptions’ formation about tourism development. We also find that there is a reduced perception about the negative affect of tourism on society and environment, especially when the income is directly depended from tourism.
description: tourismos, Vol. 8 No. 1 (2013)
ANALYSING THE INFLUENCE OF LOW-COST AIRLINES ON TOURISTS' PERCEPTION OF SERVICE QUALITY
Creators: name: Ahmed, Hossam Samy
Publisher: name: tourismos
Year: 2021

description: This paper aims to explore the characteristics of low-cost airlines and evaluate their influence on tourists' perception of service quality. Several aspects related to the low-cost business model are highlighted within this paper and they are all interpreted according to their relationship with tourists' perception of airline service quality. A survey was conducted on a sample of tourists frequently flying on low-cost airlines with an aim to interpret the correlation between factors influencing respondents' perception of different airline service quality elements. The research also dealt with numerous factors affecting the marketing of low-cost airline such as: passenger's nationality, annual income, frequency of air travel, airline service level and air ticket prices. The essential research results confirmed that the price factor has a primary influence on tourists' perception of quality when compared to many other factors attributed to low-cost airline services.
description: tourismos, Vol. 8 No. 1 (2013)
INVESTIGATING E-BUSINESS PRACTICES IN TOURISM: A COMPARATIVE ANALYSIS OF THREE COUNTRIES
Creators: name: Vlachos, Ilias
Publisher: name: tourismos
Year: 2013

description: This study examined the behaviour of tourist companies in relation to the adoption of e-business technologies and applications. The study aimed to identify groups of companies with homogenous behaviour among three European countries (Greece, Portugal and Norway). Based on data from a European survey, the study employed two-step cluster analysis which revealed 14 clusters of common behaviour (five clusters in Greece, five in Portugal and four in Norway). These clusters were named as: Leaders’ ‘Technology Experts’, ‘Fast Adopters’ ‘Beginners’, ‘Late Adopters’. In Norway, the group ‘Late Adopters’ also included companies characterised as ‘Beginners’ in the other two countries. We suggest further investigation among European countries in order to reveal more groups of similar behaviour toward e-business adoption.
description: tourismos, Vol. 8 No. 1 (2013)
ESTIMATING TOURISM DEMAND: THE CASE OF FYROM
Creators: name: Petrevska, Biljana
Publisher: name: tourismos
Year: 2013

description: The paper underlines the importance of applying forecasting methods in estimation of tourism trends. In this respect, two quantitative methods were used: (1) the method of exponential smoothing, through two of its variants: Double Exponential Smoothing and the Holt-Winters Smoothing; and (2) the Box-Jenkins methodology, through several alternative specifications. The result of the research is a medium-term estimation of foreign tourism demand for destinations in the Former Yugoslav Republic of Macedonia (FYROM) by the end of 2014. Despite the fact that all applied methods are not capable of explaining the driving factors behind the results, the estimated values can serve as a base for identifying measures and activities necessary for creating comprehensive tourism policy.
description: tourismos, Vol. 8 No. 1 (2013)
ECOTOURISM AT THE HEART OF DEVELOPMENT STRATEGIES: ELEMENTS FOR REFLECTIONS BASED ON THE CARIBBEAN EXPERIENCE
Creators: name: Dehoorne, Olivier
name: Tatar, Corina
Publisher: name: tourismos
Year: 2013

description: The paper offers a reflection on the tourism issues and development strategies relating to Caribbean destinations, and more particularly, island destinations. When faced with intense competition from the popular destinations around the region, the smaller islands have had to reaffirm their market position. Mass tourism development models have not created the expected knock-on effects for these territories of limited size and vulnerable resources. Any wish for alternative tourism practices, which for this region essentially revolve around the term ecotourism, falls under the scope of badly coordinated tourism development and its ensuing over-concentration of infrastructures, land conflicts and policies of entrenchment, etc. Sharing tourism revenue and accessing resources are key elements to the debate. Development strategies in relation to alternative tourism practices are better able to meet the expectations of host territories.
description: tourismos, Vol. 8 No. 1 (2013)
Reinforcement Learning Based Fair Edge-User Allocation for Delay-Sensitive Edge Computing Applications
Creators: name: Alchalabi, Alaa Eddin
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: Edge Computing
Reinforcement Learning
Fairness
Edge-user Allocation
Cloud Gaming
Delay-Sensitive Applications

description: Cloud Gaming systems are among the most challenging networked-applications, since they deal with streaming high-quality and bulky video in real-time to players’ devices. While all industry solutions today are centralized, we introduce an AI-assisted hybrid networking architecture that, in addition to the central cloud servers, also uses some players’ computing resources as additional points of service. We describe the problem, its mathematical formulation, and potential solution strategy. Edge computing is a promising paradigm that brings servers closer to users, leading to lower latencies and enabling latency-sensitive applications such as cloud gaming, virtual/augmented reality, telepresence, and telecollaboration. Due to the high number of possible edge servers and incoming user requests, the optimum choice of user-server matching has become a difficult challenge, especially in the 5G era where the network can offer very low latencies. In this thesis, we introduce the problem of fair server selection as not only complying with an application's latency threshold but also reducing the variance of the latency among users in the same session. Due to the dynamic and rapidly evolving nature of such an environment and the capacity limitation of the servers, we propose as solution a Reinforcement Learning method in the form of a Quadruple Q-Learning model with action suppression, Q-value normalization, and a reward function that minimizes the variance of the latency. Our evaluations in the context of a cloud gaming application show that, compared to a existing methods, our proposed method not only better meets the application's latency threshold but is also more fair with a reduction of up to 35\% in the standard deviation of the latencies while using the geo-distance, and it shows improvements in fairness up to 18.7\% compared to existing solutions using the RTT delay especially during resource scarcity. Additionally, the RL solution can act as a heuristic algorithm even when it is not fully trained. While designing this solution, we also introduced action suppression, Quadruple Q-Learning, and normalization of the Q-values, leading to a more scalable and implementable RL system. We focus on algorithms for distributed applications and especially esports, but the principles we discuss apply to other domains and applications where fairness can be a crucial aspect to be optimized.
THE YOUNG TOURIST GUIDE TO PARADISE: UNDERSTANDING BEHAVIOURAL PATTERNS OF YOUNG BEACH-ORIENTED TOURISTS
Creators: name: Mura, Paolo
name: Khoo-Lattimore, Catheryn
Publisher: name: tourismos
Year: 2013

description: This paper seeks to advance knowledge of young beach-oriented tourists by employing a qualitative research method. The research was conducted in Ios, on the south of Athens, Greece. The location represented an extremely popular destination for young people from all over the world. After three months of observation and interviews with twenty five young tourists, the findings interestingly show that the young tourists’ patterns of behaviour on holiday were often discussed by them in contrast to the patterns of behaviour in the home environment. This finding has important implications because it further expands our understanding of the relationship between the tourism experience and the leisure experience in the home environment.
description: tourismos, Vol. 8 No. 1 (2013)
Pair-breaking in iron-pnictides
Creators: name: Kogan, V. G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The puzzling features of the slopes of the upper critical field at the critical temperature $T_c$, $H^\prime_{c2}(T_c)\propto T_c$, and of the specific heat jump $ΔC\propto T_c^3$ of iron-pnictides are interpreted as caused by a strong pair-breaking.
COMMUNICATION PROBLEMS AMONG TOURISTS AND COMMUNITY FORM THE TOURIST PERSPECTIVE "A CASE STUDY FORM KARAK GOVERNORATE"
Creators: name: Alsarayreh, Mohammad Nayef
name: Al Matarneh, Ahmed Jibreel
Publisher: name: tourismos
Year: 2013

description: This study aimed at recognizing the problems of communication among the tourists and the local community in Karak Governorate forms the perspective of tourists. It determined the problems that might lead to a fault in the communicative process. This study is an explorative-analytical one, where it adopted the methodology of data collection and analysis to conclude findings. The researcher distributed 250 questionnaire forms, where he retrieved 220 and excluded 20 forms. This figure represented the population and sample of the study either. From the perspective of tourists to the southern region there were communicative problems among the tourists and community in terms of organizational party, except the existence of tourist police at the tourism sites continuously to protect the tourist from the abuse by community individuals. There were lingual problems among tourists and community besides psychological and social matters. But there were no problem for excuse in case of any mistake by the tourist. The study recommended that such organizational problems should be solved, where the state should increase the figures of tourist to the southern region. The psycho-social problems should find a solution in terms of sensitive and religious aspects which might lead to misunderstanding by community and harsh the feelings of tourists besides the difficulty of building friendship relations with tourists and treat them with respect.
description: tourismos, Vol. 8 No. 1 (2013)
Phantom without phantom or how the PT symmetry saves us from the Big Rip
Creators: name: Andrianov, A. A.
name: Cannata, F.
name: Kamenshchik, A. Y.
name: Regoli, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the PT symmetric flat Friedmann model of two scalar fields with positive kinetic terms. While the potential of one ("normal") field is taken real, that of the other field is complex. We study a complex classical solution of the system of the two Klein-Gordon equations together with the Friedmann equation. The solution for the normal field is real while the solution for the second field is purely imaginary, realizing classically the "phantom" behavior. The energy density and pressure are real and the corresponding geometry is well-defined. The Lagrangian for the linear perturbations has the correct potential signs for both the fields, so that the problem of stability does not arise. The background dynamics is determined by an effective action including two real fields one normal and one "phantom". Remarkably, the phantom phase in the cosmological evolution is transient and the Big Rip never occurs. Our model is contrasted to well-known quintom models, which also include one normal and one phantom fields.
description: revised and enlarged version, to be published in Int. J. Mod. Phys. D, the title is changed
Experimental self-testing for photonic graph states
Creators: name: Xu, Jia-Min
name: Zhou, Qing
name: Yang, Yu-Xiang
name: Cheng, Zi-Mo
name: Xu, Xin-Yu
name: Ren, Zhi-Cheng
name: Wang, Xi-Lin
name: Wang, Hui-Tian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Graph states -- one of the most representative families of multipartite entangled states, are important resources for multiparty quantum communication, quantum error correction, and quantum computation. Device-independent certification of highly entangled graph states plays a prominent role in the quantum information processing tasks. Here we have experimentally demonstrated device-independent certification for multipartite graph states, by adopting the robust self-testing scheme based on scalable Bell inequalities. Specifically, the prepared multi-qubit Greenberger-Horne-Zeilinger (GHZ) states and linear cluster states achieve a high degree of Bell violation, which are beyond the nontrivial bounds of the robust self-testing scheme. Furthermore, our work paves the way to the device-independent certification of complex multipartite quantum states.