cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Equilibrium conformations and surface charge regulation of spherical polymer brushes in stretched regimes
Creators: name: Bakhshandeh, Amin
name: Segala, Maximiliano
name: Colla, Thiago
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In the present work, we study the equilibrium conformations of linear polyelectrolytes tethered onto a spherical, oppositely charged core in equilibrium with an ionic reservoir of fixed concentration. Particular focus is placed on the situation of stretched chains, where the monomer concentration is known to display an inverse square-law decay far away from the spherical surface, which is then further extrapolated all the way down to the grafting core. While the equilibrium distributions of mobile ions are computed in the framework of a classical Density Functional Theory (cDFT) that incorporates both their size and electrostatic correlations within the grafted polyelectrolyte, the equilibrium configuration of the latter is described by its averaged radius of gyration, which is taken as a variational parameter that guarantees mechanical equilibrium across the polymer-solvent interface. The averaged particle size is then analyzed over a wide range of polymerization degrees, ionic concentrations and functionality of the polymer backbones. Two distinct regimes can be identified: at high ionic strengths, swelling of the grafted polymers is dominated by ionic entropic contribution as well as polymer size effects, whereas at low ionic concentrations a balance between electrostatic and entropic effects is the main driven mechanism for particle stretching. Using Monte Carlo simulations, we then proceed to investigate the effects of charge regulation when the brush core is further decorated with active functional sites randomly distributed over its surface, which act as receptors onto which dissolved acidic ions can be adsorbed.
The role of preparation in quantum process tomography
Creators: name: Modi, Kavan
name: Sudarshan, E. C. G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a recent letter one of us pointed out how differences in preparation procedures for quantum experiments can lead to non-trivial differences in the results of the experiment. The difference arise from the initial correlations between the system and environment. Therefore, any quantum experiment that is prone to the influences from the environment must be prepared carefully. In this paper, we study quantum process tomography in light of this. We suggest several experimental setups, where preparation of initial state plays a role on the final outcome of the experiment. We show that by studying the linearity and the positivity of the resulting maps the experimenter can determine the nature of the initial correlations between the system and the environment.
description: 11 pages, 4 figs
Internship Written Report
Creators: name: Contreras Cardozo, Dayana Arabanis
Publisher: name: University of Cartagena
Year: 2023
Subjects: subject: Desarrollo de hábitos y actitudes laborales
subject: Mejoramiento de las habilidades lingüísticas

description: Due to the popularity of the city of Cartagena de Indias, there was increasing demand for the existence of establishments such as hotels, where services and products of optimum quality will be presented, which responded to all those needs demanded by those who came to this beautiful city to enjoy and delight in its charms. Thus, in 1993 the renowned Hotel Cartagena Plaza began operations, initially consisting of 2 towers; Torre Bolivar, and Torre Plaza, with a total of 313 rooms. Since then, this company is characterized by the comfort of each of its rooms and spaces, also by the service of its staff, who provide personalized attention and excellent dedication to meet the needs and expectations of their guests who upon arriving in Cartagena decide to enjoy their best moments, either for leisure or business, in the facilities of the Hotel Cartagena Plaza, where they trust that they can rest and sleep.
Dynamical Evolution of Young Embedded Clusters: A Parameter Space Survey
Creators: name: Proszkow, Eva-Marie
name: Adams, Fred C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: This paper investigates the dynamical evolution of embedded stellar clusters from the protocluster stage, through the embedded star-forming phase, and out to ages of 10 Myr -- after the gas has been removed from the cluster. The relevant dynamical properties of young stellar clusters are explored over a wide range of possible star formation environments using N-body simulations. Many realizations of equivalent initial conditions are used to produce robust statistical descriptions of cluster evolution including the cluster bound fraction, radial probability distributions, as well as the distributions of close encounter distances and velocities. These cluster properties are presented as a function of parameters describing the initial configuration of the cluster, including the initial cluster membership N, initial stellar velocities, cluster radii, star formation efficiency, embedding gas dispersal time, and the degree of primordial mass segregation. The results of this parameter space survey, which includes about 25,000 simulations, provide a statistical description of cluster evolution as a function of the initial conditions. We also present a compilation of the FUV radiation fields provided by these same cluster environments. The output distributions from this study can be combined with other calculations, such as disk photoevaporation models and planetary scattering cross sections, to ascertain the effects of the cluster environment on the processes involved in planet formation.
description: 65 pages including 20 figures, accepted to ApJ Supplement
Exact off-resonance near fields of small-size extended hemielliptic 2-D lenses illuminated by plane waves
Creators: name: Boriskin, A. V.
name: Sauleau, R.
name: Nosich, A. I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The near fields of small-size extended hemielliptic lenses made of rexolite and isotropic quartz and illuminated by E- and H-polarized plane waves are studied. Variations in the focal domain size, shape, and location are presented versus the angle of incidence of the incoming wave. The problem is solved numerically in a two-dimensional formulation. The accuracy of results is guaranteed by using a highly efficient numerical algorithm based on the combination of the Muller boundary integral equations, the method of analytical regularization, and the trigonometric Galerkin discretization scheme. The analysis fully accounts for the finite size of the lens as well as its curvature and thus can be considered as a reference solution for other electromagnetic solvers. Moreover, the trusted description of the focusing ability of a finite-size hemielliptic lens can be useful in the design of antenna receivers.
description: 7 pages, 7 figures
Beyond code: The significance of language proficiency in the technology sector
Creators: name: Del Castillo Cáceres, Ana Marcela
Publisher: name: University of Cartagena
Year: 2023
Subjects: subject: Desarrollo de habilidades efectivas de gestión del tiempo
subject: Habilidades de resolución de conflictos
subject: Manejo del estrés

description: Taking into account the evidence gathered throughout this report, the importance that the experience of being an intern brought to my formation as a Foreign Languages student is a fundamental step in my development from student to professional. As I reflect on the multifaceted dimensions of this experience throughout the document, it is evident how this experience has served as a bridge between academia and professional identity, leaving me with a profound appreciation for the dynamic nature of foreign languages studies. This chapter of my educational voyage has shaped and broadened my trajectory and perspective regarding my career. Furthermore, the exposure to different challenges has left me with the ability to confidently navigate challenges with a sense of adaptability and resourcefulness, not just in my personal life but in my professional journey that extends beyond linguistic proficiency.
Sulla semantica dell’“abisso” nella Divina Commedia: libertà e spazio nell’originale dantesco  e nelle traduzioni estoni
Creators: name: Ploom, Ülar
Publisher: name: Firenze University Press
Year: 2014
Subjects: free will; freedom of mind; sense and reference; space and non-space; split reference

description: The aim of the present article is to discuss the semantics of the spatial image abisso (“abyss”) in Dante’s Commedia. Parting from the methodological principles of Paul Ricoeur of his general theory of the intersection of poetic discourse and speculative discourse, this study, based also on examining the translations of Dante’s work into Estonian, wishes to demonstrate that from the derogatory semantics of abisso in Inferno and the semantics of doubt related to the same concept in Purgatorio Dante arrives at the semantics of openness and freedom of the non-spatial abisso in Paradiso. Therefore the dynamics of this particular image is emblematic of the whole cognitive voyage in Commedia: from the abyss of the confusion of his mind Dante free-willingly plunges into the orderly abyss of God’s freedom which man’s mind, however, can never grasp with his own will.
description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 2 (2013)
Internship final report at the language center of the San Buenaventura university, sectional Cartagena
Creators: name: González Brango, Stefanía
Publisher: name: University of Cartagena
Year: 2023
Subjects: subject: Mejoramiento de la comprensión de inglés y francés
subject: Participación en eventos bilingües
subject: Adopción de hábitos organizacionales

description: In summary, my experience in foreign language internships has been enriching and transformative. Throughout this period, I have strengthened not only my language skills in English and French but also essential competencies in both professional and personal domains. I have learned to be more organised, effectively manage my time, and assume responsibilities diligently. Constant interaction with diverse contexts and people from various cultures has broadened my perspective on the world, fostering an open mind and a profound respect for diversity. The ability to lead situations in both languages, participate in bilingual events, and contribute to multicultural meetings has been tangible evidence of the progress achieved. Additionally, the practical application of acquired knowledge in foreign language research has strengthened my academic foundation. The experience has not only impacted my professional development but has also positively influenced my personal life. The adoption of organisational habits has improved my quality of life and contributed to a more balanced and calm approach. Finally, foreign language internships have been a revealing journey, consolidating not only my language skills but also my growth as an individual and future professional, leaving me well-prepared and excited to face the challenges and opportunities that the future may hold.
A Group Theoretical Identification of Integrable Cases of the Liénard Type Equation $\ddot{x}+f(x)\dot{x}+g(x) = 0$ : Part I: Equations having Non-maximal Number of Lie point Symmetries
Creators: name: Pandey, S. N.
name: Bindu, P. S.
name: Senthilvelan, M.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We carry out a detailed Lie point symmetry group classification of the Liénard type equation, $\ddot{x}+f(x)\dot{x}+g(x) = 0$, where $f(x)$ and $g(x)$ are arbitrary smooth functions of $x$. We divide our analysis into two parts. In the present first part we isolate equations that admit lesser parameter Lie point symmetries, namely, one, two and three parameter symmetries, and in the second part we identify equations that admit maximal (eight) parameter Lie-point symmetries. In the former case the invariant equations form a family of integrable equations and in the latter case they form a class of linearizable equations (under point transformations). Further, we prove the integrability of all of the equations obtained in the present paper through equivalence transformations either by providing the general solution or by constructing time independent Hamiltonians. Several of these equations are being identified for the first time from the group theoretical analysis.
description: Accepted for publication in Journal of Mathematical Physics
REFUGEE ROUTES AND COMMON RESOURCE POOLS IN TOURISM AREAS: THE CASE OF LESVOS ISLAND, GREECE
Creators: name: Simeli, Ioanna
name: Tsagaris, Apostolos
name: Manitsaris, Athanasios
Publisher: name: tourismos
Year: 2016

description: Lesvos is a Greek island that during 2015 experienced the largest refugee crisis the country has ever witnessed. Refugees arriving to the island in groups totalling over 1.000.000 passed through the island. The current project using a UAV sought to identify the routes of refugees passing through tourism areas of the island and the possible impact these routes had on the development of these areas. Furthermore, the preservation of the common pool resources of these areas is a vital issue for the well being of local communities and the enchancement of their spirit of welcoming the refugees. An automated system used to inform local authorities about areas polluted by the mass movement of people is presented in this paper.
description: tourismos, Vol. 11 No. 5 (2016)
title: Analysis of Ties, Tie Systems, and Attachment Methods of Fibrous Sandals of Tsegi Phase (Pueblo III) Kayenta Branch, from Tsegi Canyon, Arizona
Creators: name: Christensen, Diana Law
Publisher: name: Utah State University
Year: 1993

description: Forty-three Pueblo III sandals and sandal fragments from four sites in Tsegi Canyon, Arizona, were analyzed to develop tie terminology, identify possible correlation of tie system to sandal construction, and identify characteristics for future tie research. Each piece of sandal tie cordage was analyzed for tie system type, tie attachment method, and tie cordage structure.
Three overall tie systems were found: toe-heel tie systems (nine sandals), criss-cross tie system (one sandal), and side loop tie systems (fifteen sandals) Five additional sandals (narrow, two-warp plainweave construction) had possible toe-heel tie systems. Tie systems of six sandals were not distinguishable between toe-heel and criss-cross. Five sandals had unidentifiable tie fragments, and two sandals had no tie information.
Terminology had to be developed for several tie components. Toe loops were found with a single loop (either intact or tied over the toe) and multiple loops (overlapping, adjacent, or parallel). Side loops were overlapping (continuous, mirror image, or reversing), adjacent, and parallel. Ankle/heel loops included single, double, and double intertwined horizontal loops (back of heel), and two vertical loops (side of heel). Loop variations for two-warp plainweave were through weft, around weft, flat loop, and upright loop. Numerous attachment methods were used for the toe, ankle/heel, and side loops, including sole knots and running stitches.
Tie materials included four constructions of leaf: unprocessed leaf, S-twist leaf, Z-twist leaf, and plied leaf (Z-2S, S-2Z, Z-3S). Twelve constructions of yarn were identified, including two- and three-ply yarns of various twist combinations, re-plied yarn, and splicing. Toe-heel and criss-cross tie system sandals tended to have only one cordage type used on an individual sandal; side loop system sandals tended to have several cordage types used on an individual sandal.
A comparison of tie system and sandal construction methods revealed that coarse-braided and two-warp plainweave sandals more frequently used the toe-heel system. Fine-braided and four-and five-warp plainweave sandals used the toe-heel and side loop systems nearly evenly.
Markers for future tie researchers to examine include number of toe loops, types and attachment methods of toe and side loops, and style variations and attachments of ankle/heel loops.
Reseña de Perú frontera del mundo: Eielson y Vargas Llosa, de las raíces al compromiso cosmopolita  / Recensione di Perù frontiera del mondo: Eielson e Vargas Llosa, dalle radici all’impegno cosmopolita
Creators: name: Arbeleche, Jorge
Publisher: name: Firenze University Press
Year: 2014

description: LEA - Lingue e Letterature d'Oriente e d'Occidente, Vol 2 (2013)
A characterization of sub-riemannian spaces as length dilatation structures constructed via coherent projections
Creators: name: Buliga, Marius
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 51K10, 53C17, 53C23

description: We introduce length dilatation structures on metric spaces, tempered dilatation structures and coherent projections and explore the relations between these objects and the Radon-Nikodym property and Gamma-convergence of length functionals. Then we show that the main properties of sub-riemannian spaces can be obtained from pairs of length dilatation structures, the first being a tempered one and the second obtained via a coherent projection. Thus we get an intrinsic, synthetic, axiomatic description of sub-riemannian geometry, which transforms the classical construction of a Carnot-Caratheodory distance on a regular sub-riemannian manifold into a model for this abstract sub-riemannian geometry.
description: extended introduction and final discussion
title: Climatology of Middle and Low-Latitude F-Region Plasma Drifts from Satellite Measurements
Creators: name: Jensen, John W.
Publisher: name: Utah State University
Year: 2007

description: We used ion drift observations from the DE-2 satellite to study for the first time the longitudinal variations of middle and low latitude F-region zonal plasma drifts during quiet and disturbed conditions. The daytime quiet-time drifts do not change much with longitude. In the dusk-premidnight period, the equinoctial middle latitude westward drifts are smallest in the European sector, and the low latitude eastward drifts are largest in the American-Pacific sector. The longitudinal variations of the late night-early morning drifts during June and December solstice are anti-correlated. During geomagnetically active time s, there are large westward perturbation drifts in the late afternoon-early night sector at upper middle latitudes and in the midnight sector at low latitudes. The largest westward disturbed drifts during equinox occur in the European sector and the smallest in the Pacific region. These results suggest that during equinox, Subauroral Polarization Streams (SAPS) events occur most often at European longitudes. The low latitude perturbation drifts do not show significant longitudinal dependence.
We have used five years of measurements on board the ROCSA T-1 satellite to develop a detailed local-time, season, and longitude-dependent quiet-time global empirical model for equatorial F-region vertical plasma drifts. We show that the longitudinal dependence of the daytime and nighttime vertical drifts is much stronger than reported earlier, especially during December and June solstice. The late night downward drift velocities are larger in the eastern than in the western hemisphere at all seasons, the morning and afternoon December solstice drifts have significantly different longitudinal dependence, and the daytime upward drifts have strong wavenumber-four signatures during equinox and June solstice. The largest evening upward drifts occur during equinox and December solstice near the American sector. The longitudinal variations of the evening prereversal velocity peaks during December and June solstice are anti-correlated, which further indicates the importance of conductivity effects on the electrodynamics of the equatorial ionosphere. We have shown that disturbance dynamo largely does not affect daytime drifts. The upward perturbations during the nighttime are largely season independent, but near the prereversal enhancement, the downward perturbation drifts are largest during equinox and smallest during December.
GPMR: An Iterative Method for Unsymmetric Partitioned Linear Systems
Creators: name: Montoison, Alexis
name: Orban, Dominique
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 15A06, 65F10, 65F08, 65F22, 65F25, 65F35, 65F50

description: We introduce an iterative method named GPMR for solving 2x2 block unsymmetric linear systems. GPMR is based on a new process that reduces simultaneously two rectangular matrices to upper Hessenberg form and that is closely related to the block-Arnoldi process. GPMR is tantamount to Block-GMRES with two right-hand sides in which the two approximate solutions are summed at each iteration, but requires less storage and work per iteration. We compare the performance of GPMR with GMRES and Block-GMRES on linear systems from the SuiteSparse Matrix Collection. In our experiments, GPMR terminates significantly earlier than GMRES on a residual-based stopping condition with an improvement ranging from around 10% up to 50% in terms of number of iterations. We also illustrate by experiment that GPMR appears more resilient to loss of orthogonality than Block-GMRES.
Internship experience at foundever
Creators: name: Blanquicett Rios, Oscar Ivan
Publisher: name: University of Cartagena
Year: 2023
Subjects: subject: Habilidades de escritura en inglés
subject: Expresión oral en inglés
subject: Comprensión auditiva en el idioma inglés

description: This report is the result of my work experience during my internship at Foundever. During this time, I had the opportunity to actively participate in the work environment and apply certain knowledge acquired in my academic formation. Throughout the following sections, key aspects of my experience will be addressed, including a description of the company or organization, the context of the internship, my roles and responsibilities, the competencies acquired, as well as the contributions I made to the team and challenges I encountered during this internship, as well as their relevance to my professional and personal development.
title: The Cultural Perspective of Albert Wendt's Novel Pouliuli
Creators: name: Auva'a, Fa'alafua L.
Publisher: name: Utah State University
Year: 1997

description: Wendt's accomplishments as an artist of Polynesia and positions he held at different universities are presented in Chapter I. This marks the significant contributions he has made in different genres in which he has written, like novels, short stories, and poetry, that make him a major influence in the Pacific.
Chapter II analyzes the theoretical framework within the fa'a-Samoa in which a matai (chief) is presented, a revered office filled by respectable individuals. To make this point clear, I present the theoretical groundwork in Appendix A of how an individual becomes a matai.
Chapter III explores how Faleasa Osovae, the protagonist of Pouliuli, mirrors Mersault of The Stranger. This points out Camus's influence on Wendt.
Chapter IV investigates similarities of behaviors found among Faleasa Osovae, Mersault, and Bazarov of Turgenev's Father's and Sons. It connects Wendt and Camus to nihilism. This philosophical orientation, however, is toned down when a historical figure, Tupua Tamasese, III (Appendix B), is presented in contrast to remind readers about the historical role of a matai in the fa'a-Samoa. Chapter V explores the cognition theory that looks into behaviors of protagonists. Chapter VI is a discussion of the irony of Faleasa Osovae's behavior.
Though I offer some explanation for Faleasa's behavior when I draw parallels between him and Mersault of The Stranger and Bazarov of Father's and Sons, which almost gives him justification for behaving like King Lear, it would be improper in Samoan thought to consider Faleasa a cultural artifact of the fa'a-Samoa.
Dark Stars: Begynnelsen
Creators: name: Gondolo, Paolo
name: Freese, Katherine
name: Spolyar, Douglas
name: Aguirre, Anthony
name: Bodenheimer, Peter
name: Sellwood, Jeremy A.
name: Yoshida, Naoki
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The first phase of stellar evolution in the history of the universe may be Dark Stars, powered by dark matter heating rather than by fusion. Weakly interacting massive particles, which are their own antiparticles, can annihilate and provide an important heat source for the first stars in the universe. This and the following contribution present the story of Dark Stars. In this first part, we describe the conditions under which dark stars form in the early universe: 1) high dark matter densities, 2) the annihilation products get stuck inside the star, and 3) dark matter heating wins over all other cooling or heating mechanisms.
description: 3 pages, 2 figures, and proceeding for IDM 2008
Nii: a Bayesian orbit retrieval code applied to differential astrometry
Creators: name: Jin, Sheng
name: Ding, Xiaojian
name: Wang, Su
name: Dong, Yao
name: Ji, Jianghui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Here we present an open source Python-based Bayesian orbit retrieval code (Nii) that implements an automatic parallel tempering Markov chain Monte Carlo (APT-MCMC) strategy. Nii provides a module to simulate the observations of a space-based astrometry mission in the search for exoplanets, a signal extraction process for differential astrometric measurements using multiple reference stars, and an orbital parameter retrieval framework using APT-MCMC. We further verify the orbit retrieval ability of the code through two examples corresponding to a single-planet system and a dual-planet system. In both cases, efficient convergence on the posterior probability distribution can be achieved. Although this code specifically focuses on the orbital parameter retrieval problem of differential astrometry, Nii can also be widely used in other Bayesian analysis applications.
description: Accepted for publication in MNRAS
title: tourismos, Vol. 11 No. 5 (2016)
Creators: name: Tourismos
Publisher: name: University of the Aegean
Year: 2016

description: REFUGEE ROUTES AND COMMON RESOURCE POOLS IN TOURISM AREAS: THE CASE OF LESVOS ISLAND, GREECE...153-163 THE ROLE OF EMOTIONS IN A SPORT EVENT EXPERIENCE...125-152 DESTINATION BRANDING AND VISITOR BRAND LOYALTY: EVIDENCE FROM MATURE TOURISM DESTINATIONS IN GREECE...102-123 SOCIO-ECONOMIC ASPECTS OF THE “ELITE” LEISURE SPORTS AND SPORT TOURISM IN HUNGARY...77-101 THE INFLUENCE OF MEDIA IMPLEMENTED INTO THE EVENT-TOURIST CAREER MODEL: TRIYAS TRIATHLON, ABU DHABI...52-76 PROFILING RESIDENTS BASED ON THEIR PERCEPTIONS AND ATTITUDE TOWARD SPORT EVENT: INSIGHTS FROM THE FIA WORLD RALLY CHAMPIONSHIP...26-51 EVENTS SPONSORSHIP AS A BUSINESS PARTNERSHIP: SUGGESTING THE CRITICAL SUCCESS FACTORS...1-25 Initial Pages & Editorial...i-xvi
title: A Simple Model to Predict Optimal Harvest Time of Alfalfa Using Near Infrared Reflectance Spectroscopy, Environmental, Morphological, and Growth Parameters
Creators: name: Gale, Jody A.
Publisher: name: Utah State University
Year: 1988

description: Knowledge of relationships between nutrient levels, yield, maturity, and environmental influences on alfalfa (Medicago sativa L.) are necessary to estimate when to harvest alfalfa to maximize quality and yield. Objectives were to document the change in nutrient content, yield, and growth stage of alfalfa grown in Utah as it matures and to develop a simple model to predict optimal harvest date. The study involved three locations in major alfalfa producing regions in Utah. Samples were collected from three commonly grown alfalfa varieties between 26 April and 26 September in 1987. Maximum and minimum levels of crude protein (CP) observed were 32.8% to 16.2%, acid detergent fiber (ADF) 39.4% to 14.0%, and dry matter (OM) 31.7% to 14.3%. Maximum yield of 7.0 Mg ha-1 for a single harvest was observed. The growth stage and average yield in Mg ha-1 for all varieties and harvests collected were: prebud 3.6; midbud 4.2; and late bud to early bloom 4.9. As alfalfa matured CP% declined, ADF% increased, and DM% increased. Criteria used to estimate optimal harvest date was achieving not less than 20.0% CP, at least 29.0% ADF, but not more than 31.0% ADF. The estimated optimal harvest date was determined 63.3% of the time by not exceeding 31.0% ADF. Early to midbud were characteristic growth stages of the estimated optimal harvest date occurring 34.4% and 41.0% respectively. Midbud stage was characterized by elongation of the peduncle at second and third axillary bud positions. Accumulated growing degree hours (AGDH) were calculated using the ASYMCUR modeling concept. Height models were developed by averaging AGDH at 5 cm increments of shoot height. Models developed from the Nephi site were used to predict data from other sites. These models made about 37% acceptable predictions ranging from 0-100%. The general model made 23% acceptable predictions, variety models 47%, harvest models 43%, and 36% from specific data models. The general model, with a coefficient of variation (CV) of 14.6%, made fewer acceptable predictions than specific models having CV of 11.1% and 6.0%. Height models generated using the ASYMCUR concept were inefficient in predicting growth of alfalfa. This may be due to inaccurate estimates of when regrowth began, inaccurate weather data, and a variety of temperature related stresses which reduces the growth rate of alfalfa per unit of growing degree hours. Development of stress factor in cosine equations, improved data collection, and additional model generation and testing, could reduce variability and increasing percentage of acceptable predictions.
Leveraging Unsupervised Image Registration for Discovery of Landmark Shape Descriptor
Creators: name: Bhalodia, Riddhish
name: Elhabian, Shireen
name: Kavan, Ladislav
name: Whitaker, Ross
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In current biological and medical research, statistical shape modeling (SSM) provides an essential framework for the characterization of anatomy/morphology. Such analysis is often driven by the identification of a relatively small number of geometrically consistent features found across the samples of a population. These features can subsequently provide information about the population shape variation. Dense correspondence models can provide ease of computation and yield an interpretable low-dimensional shape descriptor when followed by dimensionality reduction. However, automatic methods for obtaining such correspondences usually require image segmentation followed by significant preprocessing, which is taxing in terms of both computation as well as human resources. In many cases, the segmentation and subsequent processing require manual guidance and anatomy specific domain expertise. This paper proposes a self-supervised deep learning approach for discovering landmarks from images that can directly be used as a shape descriptor for subsequent analysis. We use landmark-driven image registration as the primary task to force the neural network to discover landmarks that register the images well. We also propose a regularization term that allows for robust optimization of the neural network and ensures that the landmarks uniformly span the image domain. The proposed method circumvents segmentation and preprocessing and directly produces a usable shape descriptor using just 2D or 3D images. In addition, we also propose two variants on the training loss function that allows for prior shape information to be integrated into the model. We apply this framework on several 2D and 3D datasets to obtain their shape descriptors, and analyze their utility for various applications.
description: Published in Medical Image Analysis
EVENTS SPONSORSHIP AS A BUSINESS PARTNERSHIP: SUGGESTING THE CRITICAL SUCCESS FACTORS
Creators: name: Sotiriadis, Marios
Publisher: name: tourismos
Year: 2016

description: Sponsorship is now a commonly used component of the integrated marketing communications of many organisations. Despite the importance of sponsorship in the events marketing, this topic has not been investigated sufficiently. The aim of this paper is to explore and identify the critical success factors (CSFs) that determine sponsorship as a business partnership between an event organisation and its sponsor/s. This study proposes a framework of CSFs for events sponsorship as partnership, based on the model suggested by Tuten and Urban (2001). This framework provides (i) a foundation from which sponsorships could be evaluated in a more systematic and strategic manner; and (ii) a guidance for partners’ programs and plans in undertaking sponsorship ventures. It then empirically investigates this issue by a qualitative research method, a case study on Comrades Marathon, South Africa, in order to test and validate the suggested framework by means of practitioners’ perceptions and opinions.
description: tourismos, Vol. 11 No. 5 (2016)
Intertemporal allocation of consumption, savings and leisure : an application using Japanese data
Creators: name: Darrough, M. N.
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study is to investigate theoretical frameworks used in formulating models of consumption for individuals and for the whole economy, which are based on the behavioral postulate of utility maximization. Furthermore, the proposed models are subjected to an empirical application using Japanese data. These data are constructed by the author from various sources. Relevant to this task are the concepts of a consistent two-stage maximization procedure, functional separability and aggregation. Four methods of aggregation over goods are extensively discussed. Furthermore, aggregation of individual demand functions is carried out over all people who possess identical utility functions but different incomes. Then the aggregate share equations become functions of all prices, the mean expenditure (wealth) and the distribution of expenditure (wealth) in the economy. Two flexible functional forms, i.e., the translog function and the Generalized Leontief function are used to approximate non-homothetic inverse indirect utility functions. Three models of consumption are specified and estimated. The first two models are atemporal models dealing with food, consumer durables, miscellaneous goods and leisure for the whole economy, based on aggregation by homothetic separability. The third model is the intertemporal model for the representative consumer, using Leontief aggregation to aggregate goods in the future. This aggregation method allows one to take into account demographic shifts in the economy. The computational algorithm is basically an iterative version of generalized nonlinear least squares. An arbitrarily chosen equation is deleted and the remaining N-l equations are estimated to obtain the maximum likelihood estimates. Null hypotheses to be tested are: symmetry and homotheticity conditional on symmetry. The likelihood ratio test procedure is employed to determine the validity of these hypotheses. In the three good model, homotheticity is decisively rejected, while it is not rejected in the leisure model. Homotheticity is again decisively rejected in the intertemporal model. In addition, since both monotonicity and curvature are violated, we impose monotonicity in order to obtain economically meaningful estimates. One of the more significant findings in this study relates income and leisure in the Japanese case. Leisure is income inelastic in the leisure model. Moreover, present leisure in the intertemporal model turns out to be an inferior good.
Nearest-Neighbour Interaction from an Abelian Symmetry and Deviations from Hermiticity
Creators: name: Branco, G. C.
name: Emmanuel-Costa, D.
name: Simoes, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that Nearest-Neighbour Interaction (NNI) textures for the quark mass matrices can be obtained through the introduction of an Abelian flavour symmetry. The minimal realisation requires a Z_4 symmetry in the context of a two Higgs doublet model. It is further shown that the NNI textures can be in agreement with all present experimental data on quark masses and mixings, provided one allows for deviations of Hermiticity in the quark mass matrices at the 20% level.
description: 11 pages, 1 figure; references and minor corrections added
PROFILING RESIDENTS BASED ON THEIR PERCEPTIONS AND ATTITUDE TOWARD SPORT EVENT: INSIGHTS FROM THE FIA WORLD RALLY CHAMPIONSHIP
Creators: name: Del Chiappa, Giacomo
name: Presenza, Angelo
name: Yucelen, Murat
Publisher: name: tourismos
Year: 2016

description: This study aims at profiling residents based on their perceptions and attitude toward a motor sport event, namely the FIA World Rally Championship. A structured questionnaire was developed and responses from a convenience sample of 759 residents were collected face-to-face in Olbia (Sardinia, Italy), the main municipality involved in the event. A twostep cluster analysis was applied to the seven factors identified by running exploratory factor analysis on a list of 46 statements used to investigate residents’ perceptions and attitudes. Results show that residents perceptions and attitudes are not homogeneous and that four clusters can be identified with significant differences based on their socio-demographic characteristics. “Supporters” is the biggest one, followed in decreasing order of size, by: “Neutrals”, “Enthusiasts but culturally and environmentally concerned” and “Critics”. Contributions to the body of knowledge and managerial implications are discussed and suggestions for further research are given.
description: tourismos, Vol. 11 No. 5 (2016)
Identities for a parametric Weyl algebra over a ring
Creators: name: Lopatin, Artem
name: Palma, Carlos Arturo Rodriguez
Publisher: name: arXiv
Year: 2021
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16R10, 16S32

description: In 2013 Benkart, Lopes and Ondrus introduced and studied in a series of papers the infinite-dimensional unital associative algebra $\A_h$ generated by elements $x,y,$ which satisfy the relation $yx-xy=h$ for some $0\neq h\in \FF[x]$. We generalize this construction to $\A_h(\B)$ by working over the fixed $\FF$-algebra $\B$ instead of $\FF$. We describe the polynomial identities for $\A_h(\B)$ over the infinite field $\FF$ in case $h\in\B[x]$ satisfies certain restrictions.
description: 15 pages
THE INFLUENCE OF MEDIA IMPLEMENTED INTO THE EVENT-TOURIST CAREER MODEL: TRIYAS TRIATHLON, ABU DHABI
Creators: name: Slak Valek, Natasa
name: Al Buainain, Al Anood
Publisher: name: tourismos
Year: 2016

description: Using the athletes’ career trajectory model, this study implements the influence of media into the trajectory of active sport event participants’ decision-making process. It examined athletes’ motivation, media influence, travel style and behaviours, and event selection among participants of TriYas triathlon organized in Abu Dhabi, United Arab Emirates. Data were collected in February 2016 with an online survey sent to all participating athletes and descriptive statistic was used for data analyses. Results indicate that international media are followed by the majority of athletes included in our sample with no statistically significant differences between first-timers and returning participants (p=0.176). More promotion is expected in media, but on the other hand athletes do not choose sport events and destinations based on media coverage. In order to get more participants and visitors, which leads to more sponsors and media coverage our results cannot remain disregarded by sport events organizers.
description: tourismos, Vol. 11 No. 5 (2016)
Quadrupolar correlations and spin freezing in S = 1 triangular lattice antiferromagnets
Creators: name: Stoudenmire, E. M.
name: Trebst, Simon
name: Balents, Leon
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by experiments on NiGa2S4, we discuss characteristic (finite temperature) properties of spin S = 1 quantum antiferromagnets on the triangular lattice. Several recent theoretical studies have suggested the possibility of quadrupolar (spin-nematic) ground states in the presence of sufficient biquadratic exchange. We argue that quadrupolar correlations are substantially more robust than the spin-nematic ground state, and give rise to a two peak structure of the specific heat. We characterize this behavior by a novel T > 0 semiclassical approximation, which is amenable to efficient Monte Carlo simulations. Turning to low temperatures, we consider the effects of weak disorder on incommensurate magnetic order, which is present when interactions beyond nearest neighbor exchange are substantial. We show that non-magnetic impurities act as random fields on a component of the order parameter, leading to the disruption of long-range magnetic order even when the defects are arbitrarily weak. Instead, a gradual freezing phenomena is expected on lowering the temperature, with no sharp transition but a rapid slowing of dynamics and the development of substantial spin-glass-like correlations. We discuss these observations in relation to measurements of NiGa2S4.
description: 13 pages, 7 figures, modified acknowledgements section
title: Pellet Seeding on Sagebrush Range
Creators: name: Gatherum, Gordon E.
Publisher: name: Utah State University
Year: 1951

description: Seeding deteriorated range lands efficiently and economically has become one of the most promising means of improving the agricultural economy of the western range states. By providing the most rapid means of increasing the quantity and improving the quality of forage for livestock, and aiding in the prevention of soil erosion, artificial seeding contributes directly to the stability of agriculture.
MPEC 2023-K196 : 2023 KQ4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 KQ4

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.
title: A Trail Guide to the Dominguez – Velez de Escalante Expedition 1776
Creators: name: Russon, Robert S.
Publisher: name: Utah State University
Year: 1973

description: In 1939, Herbert E. Bolton stated a need for a synthesizing map of the Dominguez - Velez de Escalante route through the four states of New Mexico, Colorado, Utah, and Arizona. Dr. Bolton urged that a joint effort be undertaken between state and government agencies to establish an "Escalante Way" through the four states to commemorate the historic trek.
The "Trail Guide to the Dominguez - Velez de Escalante Expedition 1776" is an answer to the Challenge given by Herbert Bolton. It is essentially a set of maps, accurately drawn, simplified for lay read­ ing and enlivened by supporting text.
This trail guide is separated into three main sections: 1) The Beginning, 2) The Ending, and 3) The Trail.
1) The Beginning. The Dominguez-Escalante expedition resulted as one of Spain's attempts to shore up her northwestern borders against foreign encroachment by the French, Russians and British. A route to Monterey from the northern Spanish stronghold, Santa Fe, would consolidate the Spanish domination of the Southwest and enhance commercial ties with important sources of supply. For this attempt two Franciscan priests were selected to lead eight other adventurers over two thousand miles in an attempt to find a practicable route to the California coast.
2) The Ending. The results of what then was thought to be failure
to secure a viable route west were important to subsequent exploration and administrative problems both to the crumbling Spanish colonies and to American expansion. Both the journal kept by Escalante and the map drawn by Don Bernardo Miera had influence beyond their time and intent.
3) The Trail. The last section of the Guide is a narrative of the trail keyed to accompanying detailed maps (24) of the route through the four states of New Mexico, Colorado, Utah, and Arizona. The narrative blends the experience of both the Spanish party in 1776 and the author in 1973. The maps show the route taken by the Spaniards superimposed upon modern landmarks such as cities, highways and dams. Each campsite made by the party in 1776 is shown and names given prominent geographical features by the Spanish travelers at the time they passed through the country are also given. Where the modern place and feature names have changed in the ensuing period, both have been given on the maps.
Closed-form Two-way TOA Localization and Synchronization for User Devices with Motion and Clock Drift
Creators: name: Zhao, Sihao
name: Guo, Ningyan
name: Zhang, Xiao-Ping
name: Cui, Xiaowei
name: Lu, Mingquan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A two-way time-of-arrival (TOA system is composed of anchor nodes (ANs and user devices (UDs . Two-way TOA measurements between AN-UD pairs are obtained via round-trip communications to achieve localization and synchronization (LAS for a UD. Existing LAS method for a moving UD with clock drift adopts an iterative algorithm, which requires accurate initialization and has high computational complexity. In this paper, we propose a new closed-form two-way TOA LAS approach, namely CFTWLAS, which does not require initialization, has low complexity and empirically achieves optimal LAS accuracy. We first linearize the LAS problem by squaring and differencing the two-way TOA equations. We employ two auxiliary variables to simplify the problem to finding the analytical solution of quadratic equations. Due to the measurement noise, we can only obtain a raw LAS estimation from the solution of the auxiliary variables. Then, a weighted least squares step is applied to further refine the raw estimation. We analyze the theoretical error of the new CFTWLAS and show that it empirically reaches the Cramer-Rao lower bound (CRLB with sufficient ANs under the condition with proper geometry and small noise. Numerical results in a 3D scenario verify the theoretical analysis that the estimation accuracy of the new CFTWLAS method reaches CRLB in the presented experiments when the number of the ANs is large, the geometry is appropriate, and the noise is small. Unlike the iterative method whose complexity increases with the iteration count, the new CFTWLAS has constant low complexity.