cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Governance of Ethical and Trustworthy AI Systems: Research Gaps in the ECCOLA Method
Creators: name: Agbese, Mamia
name: Alanen, Hanna-Kaisa
name: Antikainen, Jani
name: Halme, Erika
name: Isomäki, Hannakaisa
name: Jantunen, Marianna
name: Kemell, Kai-Kristian
name: Rousi, Rebekah
name: Vainio-Pekka, Heidi
name: Vakkuri, Ville
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Advances in machine learning (ML) technologies have greatly improved Artificial Intelligence (AI) systems. As a result, AI systems have become ubiquitous, with their application prevalent in virtually all sectors. However, AI systems have prompted ethical concerns, especially as their usage crosses boundaries in sensitive areas such as healthcare, transportation, and security. As a result, users are calling for better AI governance practices in ethical AI systems. Therefore, AI development methods are encouraged to foster these practices. This research analyzes the ECCOLA method for developing ethical and trustworthy AI systems to determine if it enables AI governance in development processes through ethical practices. The results demonstrate that while ECCOLA fully facilitates AI governance in corporate governance practices in all its processes, some of its practices do not fully foster data governance and information governance practices. This indicates that the method can be further improved.
description: 8 pages, 1 figure, 2 tables, IEEE 29th International Requirements Engineering Conference Workshops (REW)
Derrida's Deconstruction and Critique of Femme Fatale Figure in Elechi Amadi's The Concubine
Creators: name: Chibuzo Martin Onunkwo
name: Onyemauche Leo Ejesu
name: Chigbu Andrew Chigbu
Publisher: name: Zenodo
Year: 2024
Subjects: Literature, Deconstruction, Jacques Derrida, Elechi Amadi, Femme Fatale.

description: Abstract

This paper interrogates the character of Ihuoma as a femme fatale figure in Elechi Amadi’s The Concubine. Most of the critical reading of the novel have centered on examination of African primitive life style, cultural practices of African people prior to Western civilization. Apart from the representation of African primitive life style, one dominant critical perspective seems to dominate the reading of the text, that is, the portrayal of the character of Ihuoma as a femme fatale figure, who is villainous, morally ambiguous, vicious, lethal, seductive, cunning and luring men to death. However, this paper takes a different critical perspective from the usual reading of Ihuoma as a femme fatale figure. It is the contention and argument of this paper that Ihuoma is not a fatal figure. This is the gap in scholarship which this paper seeks to fill. In attempt to interrogate this notion of Ihuoma as a femme fatale figure, the writer made use of Jacques Derrida’s deconstruction as a conceptual framework to critically dismantle the idea of Ihuoma as a femme fatale figure.
title: Interactions Between Fire Severity and Forest Biota in the Central Sierra Nevada: Formation and Impact of Small-Scale Fire Refugia and the Effect of Fire on Forest Structure Predictive of Fisher (Pekania pennanti) Den Habitat
Creators: name: Blomdahl, Erika M.
Publisher: name: Utah State University
Year: 2018

description: Fire is a natural and essential component of forests in western North America. Fire maintains biodiversity through the creation of different habitat types, and regular fire rotations reduce the accumulation of woody fuels and thick understory plant densities that give rise to catastrophic fire. The practice of fire exclusion has altered western forests and increased the risk of widespread change under rising temperatures projected for the 21st century. To manage for the reintroduction of fire it is critical that we understand the interactions between fire and forest biota in recently fire-suppressed forests.
In Chapter 2, I studied the formation and impact of small-scale fire refugia. Fire refugia are areas within burned forest that experienced relatively little change, and are recognized as important places that offer protection for forest biota (vegetation, wildlife) during and after the fire. Very few studies, however, have examined small-scale fire refugia despite their importance to many organisms (e.g., small mammals, understory plants). In a long-term forest monitoring plot in Yosemite National Park, I mapped all unburned areas ≥ 1 m2 the first year after fire. I found small fire refugia were abundant, somewhat predictable, and fostered increased survival and diversity of nearby plant life. My results suggest that small fire refugia are an important component of burned forests that should be included in management considerations.
In Chapter 3, I examined possible fisher habitat in burned areas. Fishers are forest carnivores of high conservation concern due to widespread declines since European settlement and the risk of habitat loss due to fire. An isolated population remains in the Sierra National Forest, where managers are weighing the need to reintroduce fire against possible detrimental impacts to current habitat. My research examined the forest structural characteristics (vegetative cover, heights of different forest layers) surrounding fisher dens. I found suitable thresholds of these structural characteristics in recently burned areas in Yosemite, particularly after low-severity fire. My results suggest that burned areas may offer suitable denning habitat for fishers, though more research is needed to determine if this conclusion holds for all fisher activities (e.g., foraging, resting) and scales of selection.
Estimating small angular scale CMB anisotropy with high resolution N-body simulations: weak lensing
Creators: name: Fullana, M. J.
name: Arnau, J. V.
name: Thacker, R. J.
name: Couchman, H. M. P.
name: Sáez, D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We estimate the impact of weak lensing by strongly nonlinear cosmological structures on the cosmic microwave background. Accurate calculation of large $\ell$ multipoles requires N-body simulations and ray-tracing schemes with both high spatial and temporal resolution. To this end we have developed a new code that combines a gravitational Adaptive Particle-Particle, Particle-Mesh (AP3M) solver with a weak lensing evaluation routine. The lensing deviations are evaluated while structure evolves during the simulation so that all evolution steps--rather than just a few outputs--are used in the lensing computations. The new code also includes a ray-tracing procedure that avoids periodicity effects in a universe that is modeled as a 3-D torus in the standard way. Results from our new simulations are compared with previous ones based on Particle-Mesh simulations. We also systematically investigate the impact of box volume, resolution, and ray-tracing directions on the variance of the computed power spectra. We find that a box size of $512 h^{-1}$ Mpc is sufficient to provide a robust estimate of the weak lensing angular power spectrum in the $\ell$-interval (2,000--7,000). For a reaslistic cosmological model the power $[\ell(\ell+1)C_{\ell}/2π]^{1/2}$ takes on values of a few $μK$ in this interval, which suggests that a future detection is feasible and may explain the excess power at high $\ell$ in the BIMA and CBI observations.
description: 49 pages, 13 figures, accepted for publication in ApJ
El gran príncipe de Fez
Creators: name: Merlino, Elena
Publisher: name: Zenodo
Year: 2024
Subjects: Calderón
Métrica dramática
Segmentación dramática
Bibliografía
El gran príncipe de Fez

description: Calderón Digital: base de datos, argumentos y motivos del teatro de Calderón (dir. Fausta Antonucci). Ficha dedicada a El gran príncipe de Fez, con datos bibliográficos primarios y secundarios, fecha probable de composición, cómputo de las formas métricas, análisis de las coordenadas espacio-temporales, adscripción genérica y sinopsis argumental detallada, con indicación de los principales motivos (diegéticos y simbólicos) y propuesta de segmentación articulada según los cambios de forma métrica, de espacio y tiempo dramáticos.
title: Nuestra experiencia con EnteroTC y la EII
Creators: name: Vargas Díaz, Ana María
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Obstruction / Occlusion
subject: Inflammation
subject: Fistula
subject: Technical aspects
subject: Contrast agent-oral
subject: Contrast agent-intravenous
subject: CT-High Resolution
subject: Image manipulation / Reconstruction
subject: Education
subject: Contrast agents
subject: Abdomen

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Analizar los hallazgos radiológicos con enteroTC en paciente con enfermedad inflamatoria intestinal confirmada (actividad y posibles complicaciones); así como realizar una orientación diagnóstica en pacientes con alta sospecha. Presentar la...
LEVERAGING MACHINE LEARNING TO PREDICT AND REDUCE HEALTHCARE CLAIM DENIALS
Creators: name: Ritesh Chaturvedi
name: Dr. Saloni Sharma
name: Pandi Kirupa Gopalakrishna Pandian
name: Dr. Sourabh Sharma
Publisher: name: Zenodo
Year: 2024
Subjects: Healthcare Claims; Claim Denials; Machine Learning; Predictive Modeling; Revenue Cycle Management.

description: Abstract

Healthcare claim denials pose a significant financial burden on healthcare providers and payers. Denied claims result in lost or delayed revenue, administrative rework costs, and inefficiencies in the healthcare system. Traditional methods of identifying claims likely to be denied are manual, time-consuming, and error-prone. This study proposes a machine learning approach to predict healthcare claim denials and provide actionable insights to proactively mitigate denial risks. We developed and evaluated multiple machine learning models using a large dataset of historical claims from a national payer. The best performing model, a gradient boosted tree ensemble, achieved an AUC of 0.91 and an F1-score of 0.73 in predicting claim denials. Feature importance analysis revealed the key factors influencing claim denials, including provider specialty, geography, patient demographics, and claim attributes. We then conducted a prospective study where the model was deployed to flag high-risk claims for preemptive interventions. Over a 6-month period, the machine learning-driven approach reduced claim denial rates by 25% and decreased rework costs by 15% compared to a control group. The results demonstrate the potential of machine learning to improve the efficiency and cost-effectiveness of the healthcare claim lifecycle. Our approach can enable payers and providers to proactively identify and address denial risks, reduce administrative burden, and ensure timely reimbursement for delivered healthcare services.
title: Papel de la Resonancia Magnética de Mama en el estudio de la telorrea/telorragia uniorificial
Creators: name: Calles Blanco, Carlos
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neoplasia
subject: Hyperplasia / Hypertrophy
subject: Galactography
subject: Comparative studies
subject: MR
subject: Oncology
subject: Breast

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Identificar la causa de la telorrea/telorragia uniorificial constituye un reto diagnóstico.
La galactografía es la prueba diagnóstica de elección para el estudio de estas pacientes,
ya que en un porcentaje significativo de éstas la mamografía...
title: Experimental Investigation of a Green Hybrid Thruster Using a Moderately Enriched Compressed Air as the Oxidizer
Creators: name: Bulcher, Marc Anthony
Publisher: name: Utah State University
Year: 2018

description: A hybrid rocket is a propulsion system that uses propellants in two different phases, typically a solid fuel inside the combustion chamber and a separate gaseous or liquid oxidizer stored in a tank. Hybrid rockets are an area of research interest because of their low explosive risk, inexpensive components, and high degree of reliability. In the Propulsion Research Laboratory at Utah State University, pure oxygen is among the top choice for hybrid rocket oxidizers due to its low cost and ease of storage. When paired with a solid fuel known as ABS (acrylonitrile butadiene styrene) plastic, specific impulse values exceed 200 seconds at one atmosphere. This metric outperforms hydrazine, which is a propellant standard for in-space propulsion that exhibits high vapor toxicity and explosive hazards. However, due to the low density of oxygen, propulsion applications require storage pressures up to 3000 psig. At this high pressure, the use of oxygen can present a fire hazard. As a result, this thesis investigates the feasibility of replacing oxygen with a moderately enriched compressed air containing oxygen levels up to 40%, while maintaining performance metrics equal to or above hydrazine. To demonstrate the performance of moderately enriched air as a hybrid rocket oxidizer, comparisons to tests using pure oxygen are presented.
Chemical Yields from Supernovae and Hypernovae
Creators: name: Nomoto, Ken'ichi
name: Wanajo, Shinya
name: Kamiya, Yasuomi
name: Tominaga, Nozomu
name: Umeda, Hideyuki
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We review the final stages of stellar evolution, supernova properties, and chemical yields as a function of the progenitor's mass M. (1) 8 - 10 Ms stars are super-AGB stars when the O+Ne+Mg core collapses due to electron capture. These AGB-supernovae may constitute an SN 2008S-like sub-class of Type IIn supernovae. These stars produce little alpha-elements and Fe-peak elements, but are important sources of Zn and light p-nuclei. (2) 10 - 90 Ms stars undergo Fe-core collapse. Nucleosynthesis in aspherical explosions is important, as it can well reproduce the abundance patterns observed in extremely metal-poor stars. (3) 90 - 140 Ms stars undergo pulsational nuclear instabilities at various nuclear burning stages, including O and Si-burning. (4) 140 - 300 Ms stars become pair-instability supernovae, if the mass loss is small enough. (5) Stars more massive than 300 Ms undergo core-collapse to form intermediate mass black holes.
description: 13 pages, 10 figures. Published in the Proceedings of IAU Symposium No. 254 "The Galaxy Disk in Cosmological Context" (2009), eds. J. Andersen, J. Bland-Hawthorn, and B. Nordstrom (Cambridge University Press), pp. 355-367
title: The Association of Seed and Cone Predator Populations and Cone Crop Production in Engelmann Spruce
Creators: name: Cameron, Dawn E.
Publisher: name: Utah State University
Year: 1987

description: Engelmann spruce (Picea engelmannii Parry ex Engelm.) exhibits cone crop periodicity, producing seed in a cyclic pattern. Variation in seed production has been noted between individuals of a population, but synchronization on a large scale is common. The theory that ultimately these periodic large cone crops have resulted from the selective pressures of seed and cone predators, referred to as the predator satiation hypothesis, is considered. Assuming predator pressures have operated over evolutionary time to select for periodic synchrony, associations between seed and cone predators and cone crop production levels were anticipated. These potential consequences of predator satiation were examined.
Long-term data from 1948 to 1970 of Engelmann spruce cone production levels and small mammal populations, estimated from trappings, were analyzed for positive associations. Three small mammal categories, mice (Peromyscus spp.), chipmunks (Eutamias spp.) and red squirrels (Tamiasciurus hudsonicus) were examined. Only the correlation coefficient between population indices for mice and cone crop production was found to be significant.
Engelmann spruce cones were collected throughout the summer of a year of low cone production. The impacts and timing of insect infestation were determined in developing cones. The major insects found were western spruce budworm (Choristoneura occidentalis (Freeman) (Lepidoptera: Torticidae)), fir coneworm (Dioryctria abietvorella (Grote) (Lepidoptera: Pyralidae)), and spruce seed moth (Laspeyresia youngana (Kearfott) (Lepidoptera: Olethreutidae)). Insects reduced the survival of cones to 11.48 cones out of 100. The high percentage of seeds and cones lost to insect predation supported previous studies of a similar nature.
Both studies examined the potential consequences of the predator satiation hypothesis which has been suggested as an adaptive mechanism for trees to avoid seed and cone predation.
Exploring the regulatory role of nitric oxide (NO) and the NO-p38MAPK/cGMP pathway in larval settlement of the bryozoan Bugula neritina
Creators: name: Yang, Xiao-Xue
name: Wong, Yue Him
name: Zhang, Yu
name: Zhang, Gen
name: Qian, Pei-Yuan
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Evolutionary Biology
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: The bryozoan Bugula neritina is a cosmopolitan marine fouling species that causes major fouling problems in sub-tropical waters. Settlement of B. neritina larvae can be triggered without an obvious external cue. Here, the negative regulatory role of nitric oxide (NO) during larval settlement of B. neritina was demonstrated to be mediated by cyclic guanosine monophosphate (cGMP). Although the regulatory role of the NO-p38 MAPK signaling axis in larval settlement was not evident, inhibition of nitric oxide synthase (NOS) led to the deactivation of p38 MAPK. Exclusive localization of NO and NO signaling components in sensory-related organs of the larvae is consistent with its signal transduction function in metamorphosis. Overall, this study provides new insights into the regulatory roles of the NO-p38MAPK/cGMP pathway in B. neritina settlement.
EMOTIONAL INTELLIGENCE: THE NEED OF THE HOUR FOR MITIGATING THE EFFECT OF WORK STRESS ON WORK PERFORMANCE-A COMPREHENSIVE RESEARCH ANALYSIS
Creators: name: ANAMIKA SINGH
name: Dr. RAJKIRAN PRABHAKAR
Publisher: name: Zenodo
Year: 2024

description: Abstract

The year 1990 saw the initial mention of the term "Emotional Intelligence" (EI) in academic journals. Both the number of studies conducted on EI and the number of models developed in this area have grown dramatically since then. Recently, the idea of "emotional intelligence" (EI) has gained a lot of attraction in the business world. The subject has recently exploded in popularity, affecting even organizational psychologists. This study compiles and synthesizes research on the following topics: the role of emotional intelligence as a moderator between stress at work and performance on the job; how to reduce the negative impact of stress at work on performance on the job; and how to perform well under pressure.
Yoctosecond photon pulses from quark-gluon plasmas
Creators: name: Ipp, Andreas
name: Keitel, Christoph H.
name: Evers, Jörg
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Present ultra-fast laser optics is at the frontier between atto- and zeptosecond photon pulses, giving rise to unprecedented applications. We show that high-energetic photon pulses down to the yoctosecond timescale can be produced in heavy ion collisions. We focus on photons produced during the initial phase of the expanding quark-gluon plasma. We study how the time evolution and properties of the plasma may influence the duration and shape of the photon pulse. Prospects for achieving double peak structures suitable for pump-probe experiments at the yoctosecond timescale are discussed.
description: 4 pages, 2 figures; final version as accepted by PRL
RFID Key Establishment Against Active Adversaries
Creators: name: Bringer, Julien
name: Chabanne, Hervé
name: Cohen, Gérard
name: Kindarji, Bruno
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: We present a method to strengthen a very low cost solution for key agreement with a RFID device. Starting from a work which exploits the inherent noise on the communication link to establish a key by public discussion, we show how to protect this agreement against active adversaries. For that purpose, we unravel integrity $(I)$-codes suggested by Cagalj et al. No preliminary key distribution is required.
description: This work was presented at the First IEEE Workshop on Information Forensics and Security (WIFS'09) (update including minor remarks and references to match the presented version)
Definability of Combinatorial Functions and Their Linear Recurrence Relations
Creators: name: Kotek, T.
name: Makowsky, J. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Combinatorics (math.CO)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 05A15, 03C13, 68R05, 68R15

description: We consider functions of natural numbers which allow a combinatorial interpretation as density functions (speed) of classes of relational structures, s uch as Fibonacci numbers, Bell numbers, Catalan numbers and the like. Many of these functions satisfy a linear recurrence relation over $\mathbb Z$ or ${\mathbb Z}_m$ and allow an interpretation as counting the number of relations satisfying a property expressible in Monadic Second Order Logic (MSOL). C. Blatter and E. Specker (1981) showed that if such a function $f$ counts the number of binary relations satisfying a property expressible in MSOL then $f$ satisfies for every $m \in \mathbb{N}$ a linear recurrence relation over $\mathbb{Z}_m$. In this paper we give a complete characterization in terms of definability in MSOL of the combinatorial functions which satisfy a linear recurrence relation over $\mathbb{Z}$, and discuss various extensions and limitations of the Specker-Blatter theorem.
description: 18 pages, 1 table
title: Integration of Special Sensor Microwave/Imager (SSM/I) and in Situ Data for Snow Studies from Space
Creators: name: Sun, Changyi
Publisher: name: Utah State University
Year: 1996

description: The Special Sensor Microwave/Imager (SSM/I) radiometer is a useful tool for monitoring snow conditions and estimating snow water equivalent and wetness because it is sensitive to the changes in the physical and dielectric properties of snow. Development and improvement of SSM/I snow-related algorithms is hampered generally by the lack of quantitative snow wetness data and the restriction of a fixed uniform footprint. Currently, there is a need for snow classification algorithms for terrain where forests overlie snow cover.
A field experiment was conducted to examine the relationship between snow wetness and meteorological variables. Based on the relationship, snow wetness was estimated concurrently with SSM/I local crossing time at selected footprints to develop an SSM/I snow wetness algorithm. For the improvement of existing algorithms, SSM/I observations were linked with concurrent ground-based snow data over a study area containing both sparse- and medium-vegetated regions. Unsupervised cluster analysis was applied to separate SSM/I brightness temperature (Tb) data into groups. Six typical SSM/I Tb signatures, based on cluster means of desired snow classes, were identified. An artificial neural network (ANN) classifier was designed to learn the typical Tb patterns Ill for land-surface snow cover classification. An ANN approximator was trained with the relations between inputs of SSM/I Tb observations and outputs of ground-based snow water equivalent and wetness.
Results indicated that snow wetness estimated from concurrent air temperature could provide the ground-based data needed for the development of SSM/I algorithms. The use of cluster means might be sufficient in ANN supervised learning for snow classification, and the ANN has the potential to be trained for retrieving different snow parameters simultaneously from SSM/I data.
It is concluded that the ANN approach may overcome the drawbacks and limitations of the existing SSM/I algorithms for land-surface snow classification and parameter estimation over varied terrain. This study demonstrated a nonlinear retrieval method towards making the inferences of snow conditions and parameters from SSM/I data over varied terrain operational.
EFFECTIVENESS OF DIFFERENT TYPES OF TOTAL MIXED RATIONS (TMR) WITH THREE PROTEIN LEVELS ON GROWTH PERFORMANCE IN MALE LOHI SHEEP
Creators: name: MUHAMMAD ARIF
name: MUHAMMAD FAROOQ IQBAL
name: TANVEER AHMAD
name: KASHIF ISHAQ
Publisher: name: Zenodo
Year: 2024
Subjects: Total Mixed Ration, Acetic Acid, Propionic Acid, Dry Matter Intake, Growth Performance And Carcass Traits.

description: Abstract

The effectiveness of different types of TMR with three protein levels on growth performance and carcass traits in male Lohi sheep was determined.  Eighteen male Lohi sheep were selected for 90-days feeding trial and the estimated age of each individual was 120 ±15 days. Initial body weights of these individuals were 15.00 ± 0.13 (kg).  These individuals were randomized into six replications using a 2 × 3 factors factorial arrangement. Maize silage and maize hay were used in total mixed rations formulations as wet (W) and dry (D) total mixed rations (TMR), respectively. Three protein levels viz., Low crude protein (LCP), normal (control) crude protein (NCP) and high crude protein (HCP) were used for making different dietary treatments. Six dietary treatments WTMR: LCP, WTMR: NCP, WTMR: HCP, DTMR: LCP, DTMR: NCP and DTMR: LCP and HCP were used in the current experiment. Data for growth performance parameters, carcass characteristics, meat quality and blood parameters of male Lohi sheep fed on different treatments were recorded. Individuals fed on wet TMR had shown overall the best performance (P<0.05) as compared with the individuals fed on dry TMR. Highest body weight was observed in treatment WTMR: HCP (33.20 Kg) followed by lambs fed on WTMR: NCP (31.90 Kg) and WTMR: LCP (28.70 Kg; P<0.04). The best performance of average daily gain (ADG) was estimated around 200 g/day, which was observed in individuals fed WTMR: HCP (P<0.02). An interaction effect for dry matter intake (DMI) was also noted in lambs fed dry and wet TMR (P<0.04). Highest DMI (831.1 g/day) was found in lambs fed wet TMR: HCP. An interaction effect for meat crude protein chemical composition, acetic acid, propionic acid and butyric acid were also reported for lambs fed on wet TMR: HCP. It was concluded that inclusion of high crude protein in wet TMR had significantly improved growth performance parameters, fermentation characteristics and carcass traits in male Lohi sheep. Therefore, it is recommended that farmers may use high crude protein with wet TMR for better growth performance of small ruminants.
Polarization in broad emission lines of Active Galactic Nuclei
Creators: name: Popović, L. C.
name: Shablovinskaya, E.
name: Savić, Dj.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We discuss the polarization of broad emission lines in the type 1 active galactic nuclei (AGNs). The polarization depends on the geometry of the broad line region (BLR), and also on the polarization mechanism, or distribution of the scattering material. Therefore the polarization measurements can indicate the geometry of the BLR and the mechanism of polarization (equatorial or polar scattering). In addition, the polarization angle (PA) shape across the line profile can be used to measure the supermassive black hole (SMBH) mass, and constrain the BLR characteristics. We give an overview of ours and other recent investigations of the polarization in broad lines from both aspects: theoretical and observational.
description: accepted in Ast.Nach. This review was present at 13th SCSLSA in a special session dedicated to the memory of Victor Leonidovich Afanasiev who passed away in December 2020
title: An Investigation of the Cone and Seed Insects of Whitebark Pine and Alpine Larch Emphasizing the Western Conifer Seed Bug (Hemiptera: Coreidae) and the Larch Cone Fly (Diptera: Anthomyiidae)
Creators: name: Anderton, Laurel K.
Publisher: name: Utah State University
Year: 2000

description: Laboratory and field feeding tests with Leptoglossus occidentalis Heidemann proved that both immature and mature seed bugs can use cones and foliage of whitebark pine, Pinus albicaulis Engelmann, as a food source for 1- to 2-week periods. Damage to unprotected whitebark pine cones by seed bugs ranged from 0.3 to 2.1 % of seeds per cone, and for bagged cones averaged 0.7% of seeds per cone. Total insect damage ranged from 0.4 to 7.2% of seeds per cone. A seed chalcid, Megastigmus sp., was documented for the first time on whitebark pine and damaged 4.7% of examined seeds at one site. Four out of five upper elevation subsites had an average of 24.9% fewer filled seeds per cone than lower elevation subsites. Within-site elevation differences had no significant effect on cone length, number of seeds per cone, percentage of potential seeds per cone, or percentages of seed bug and insect-damaged seeds per cone.
The larch cone fly Strobilomyia macalpinei Michelsen was found in cones of alpine larch, Larix lyallii Parl., in the Bitterroot Range of Montana. This is the first record of this species in the United States and the first since its description in 1988. Ninety-four percent of a sample of alpine larch cones were damaged by cone fly larvae, and 64% contained larvae or puparia. Colored traps did not succeed in trapping adult cone flies in an alpine larch stand with no cone crop.
ECOTOURISM AND ITS IMPACT ON THE REGIONAL ECONOMY – A STUDY OF NORTH BENGAL (INDIA)
Creators: name: Karmakar, Madhusudan
Publisher: name: tourismos
Year: 2011

description: Ecotourism, the nature based travel with emphasis on education, management, development of sustainable tourism product and activity and wellbeing of the local people is not simply a marginal activity to finance protection of the environment but it has proved to be an engine of growth in many economies of the world. Eco tourism has been recognized as the backbone of economies of many countries. North Bengal being the northern territory of West Bengal of India is fortunate for its rich ecotourism destinations. The present paper will explore the ecotourism landscape of this tract of India. It will also reflect an overview of its impact on the regional economy with six case studies. The paper will be concluded with some problems and management strategies of ecotourism activity of the area.
description: tourismos, Vol. 6 No. 1 (2011)
title: Post-Fire Succession and Disturbance Interactions on an Intermountain Subalpine Spruce-Fir Forest
Creators: name: Dicus, Christopher A.
Publisher: name: Utah State University
Year: 1995

description: Four general post-fire successional pathways leading to a climax Engelmann spruce (Picea engelmannii Parry)/subalpine fir (Abies lasiocarpa [Hook] Nutt.) forest were identified operating on the T.W. Daniel Experimental Forest in northern Utah. These included initial colonization by seral quaking aspen (Populus tremuloides Michx.), seral lodgepole pine (Pinus contorta Dougl. ex Loud.), colonization by lodgepole pine followed by a low intensity surface fire, and immediate colonization by late successional Engelmann spruce and subalpine fir.
Post-fire establishment of the late successional species occurred earliest in the Engelmann spruce/subalpine fir pathway followed by the lodgepole pine and lodgepole pine ground fire pathways, and the quaking aspen pathway . The late successional species 11 grew fastest in the Engelmann spruce/subalpine fir pathway followed by the quaking aspen, lodgepole pine, and lodgepole pine ground-fire pathways.
Conceptual models were presented showing how perturbations by fire, insect epidemics, and disease could interact to influence succession and shape the subalpine landscape. The subalpine forest changes through time to facilitate different types of disturbance that have varying effects on succession. In the continued suppression of fire, species and age class diversity will be reduced and disturbances may occur that are larger and more intense than those that have occurred historically.
RENT-A-CAR INDUSTRY: A CASE STUDY IN ARGENTINA
Creators: name: Korstanje, Maximiliano
Publisher: name: tourismos
Year: 2011

description: Even though researchers give considerable attention to the means of transport in tourism fields, it is unfortunate that cars played a secondary role in this concern. Basically, the present brief work focuses on a gap in tourism and managerial literature, the rent-a-car market in Argentina. Under such a context, the present comment-piece is aimed at synthesizing 10 years of experience in this kind of organizations as consultant wherein we have come across with situations of underdevelopment and misinformation about the opportunities of rental businesses. With emphasis on the problems and advantages that renting companies show by respecting to other services, it is important to note that the loophole in legal support looks to be for this activity an increasing limitation for further enhancement in Argentina.
description: tourismos, Vol. 6 No. 1 (2011)
PROLIFERATION OF TRADE UNIONS IN NIGERIA: IMPLICATION ON THE COLLECTIVE BARGAINING PROCESS IN NIGERIA'S PUBLIC SECTOR
Creators: name: RABIU ISA
name: ZURYATI MOHAMED YUSOFF
name: ANI MUNIRAH MUHAMMAD
Publisher: name: Zenodo
Year: 2024
Subjects: Government, Trade Unions, Collective Bargaining, Public Sectors.

description: Abstract

This paper examined the impact of multiple trade unions on the enforceability of collective bargaining agreements, particularly within public organisations in Nigeria. The proliferation of trade unions in Nigeria has become a significant cause for concern. The article observed that trade union fragmentation and proliferation are significant barriers to the successful implementation of collective bargaining agreements, especially in the Nigerian public sector. In due course, the paper observed fragmentation of bargaining, complexity in negotiation and potential for conflicting agreements as the fundamental effects of multiple trade unions on the collective bargaining process. The paper also examined the Nigerian Trade Union Law and other labour legislation, recognising the existence and role of trade unions in the public sector. This paper collects data from both primary and secondary doctrinal legal research methodologies, such as textbooks, case laws, statutes, journals, and online articles. The paper concluded by stating that the multiplicity of trade unions had reduced the union's bargaining power. By having two or more trade unions, they are consistently in competition with one another, and sometimes this has led to the misrepresentation of members’ interests at meetings with management as well as conflicting demands capable of confusing the employer and the employees. The paper recommends that consolidating certain unions, especially those with interconnected operations, is necessary to reduce the number of trade unions as much as possible. This measure will significantly encourage and ease the implementation of collective bargaining agreements in the public sector.
title: Comparing the Predictive Power of Executive Function Assessment Strategies on Preschool Mathematics Performance
Creators: name: Esplin, Jacob A.
Publisher: name: Utah State University
Year: 2018

description: A child’s executive function (aspects: working memory, response inhibition, and set-shifting between sets of rules) capabilities have been found to strongly relate to their mathematics skills. However, while the relationship has been strongly supported by researchers, a consensus has not been reached regarding the specifics of the relationship between executive function and math skills, including which executive function aspect is most predictive of mathematical performance and the differences in said relationship that might be found when examining both numeracy, such as counting skills and basic operations, and geometry skills. The lack of consensus may be in part because researchers have assessed both executive function and mathematics in a variety of ways. To address the consensus issue, this study used a panel of face-to-face measures of executive function, a paper-and-pencil measure of executive function, and a broader measure of mathematical performance than has typically been used, one including numeracy and geometry. Using a longitudinal approach, with two assessment periods about six months apart (M = 5.61 mos., SD = 1.12), this study examined this relationship among 118 children (61 girls), ages 39 to 68 months (M = 52.58, SD = 6.35), living in both rural (n = 64) and urban (n = 54) areas in a state in the western United States. A longitudinal approach allowed for comparisons between results from the two assessment periods. Results suggest that while numeracy and geometry skill among preschool-age children are connected, there are some independent elements. Additionally, because of rapid cognitive growth, age is an important factor when selecting both assessments and analytic strategies, as statistically significant variations in the predictive power of measures and strategies occurred between assessment periods. Connections between younger children’s executive function and numeracy skills appeared to be best assessed through a non-number-based measure, older children’s numeracy ability can be predicted by a greater variety of executive function measures. Face-to-face executive function measures included in this study were more predictive of numeracy skill than geometry skill, and geometry skill appears to be connected to inhibitory control. Differences between rural and urban children were found on numeracy skill and working memory ability, but not on geometry skill. Statistically significant differences by gender were found on an inhibitory control measure, with boys scoring higher than girls in our sample.
TOPISHMOQLAR TASNIFINING METODOLOGIK ASOSLARI
Creators: name: Nuriddinova, Hurriyat
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada topishmoqlarni turli yo’nalishlarda turli olimlar tomonidan ko’rib chiqilgan jihatlari, ingliz va o’zbek topishmoqlarining leksik o’xshashliklari o’rganildi. Topishmoqlar struktural, ifoda usuli, mazmun mohiyatiga ko’ra o’xshash va farqli jihatlarga ega. Ulardagi o’xshashlik har ikkalasi ham mifologik tasavvur mahsuli ekanligini ko’rsatadi. Ikki tildagi topishmoqlarning shunday o’xshash va farqli jihatlari ushbu maqolada ko’rib chiqilgan.
X-ray observations of classical novae. Theoretical implications
Creators: name: Hernanz, M.
name: Sala, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Detection of X-rays from classical novae, both in outburst and post-outburst, provides unique and crucial information about the explosion mechanism. Soft X-rays reveal the hot white dwarf photosphere, whenever hydrogen (H) nuclear burning is still on and expanding envelope is transparent enough, whereas harder X-rays give information about the ejecta and/or the accretion flow in the reborn cataclysmic variable. The duration of the supersoft X-ray emission phase is related to the turn-off of the classical nova, i.e., of the H-burning on top of the white dwarf core. A review of X-ray observations is presented, with a special emphasis on the implications for the duration of post-outburst steady H-burning and its theoretical explanation. The particular case of recurrent novae (both the "standard" objects and the recently discovered ones) is also reviewed, in terms of theoretical feasibility of short recurrence periods, as well as regarding implications for scenarios of type Ia supernovae.
description: 6 pages, review paper accepted for publication in Astronomische Nachrichten
ASSESSMENT OF NATURE-BASED TOURISM IN SOUTH KELANTAN, MALAYSIA
Creators: name: Marzuki, Azizan
name: Hussin, Abdul Aziz
name: Badaruddin, Mohamed
name: Othman, Abdul Ghapar
name: Mat Som, Ahmad Puad
Publisher: name: tourismos
Year: 2011

description: Nature-based tourism is an important part of the global tourism industry, and its components and features vary considerably from one destination to another. In Malaysia, location, quality and quantity of natural resources, and their infrastructure have not been well documented in the past. Thus, this paper attempts to assess the potential of natural tourism destinations in South Kelantan, by selecting fifteen destinations such as waterfalls and caves as case studies. Based on GIS application, 23 indicators for tourism destination assessment were investigated using observation and checklist techniques. The destinations were further classified based on physical features, infrastructure and accessibility. The results showed that 3 destinations were in the first category, 11 in the second category and only one destination in the third category. This study found that GIS application is effective in providing higher quality of information for natural tourism destination, which is an essential tool for decision making process.
description: tourismos, Vol. 6 No. 1 (2011)
title: Impact of the Western Spruce Budworm on Buds, Developing Cones and Seeds of Douglas-Fir in the Intermountain Region
Creators: name: Frank, Charles Joseph
Publisher: name: Utah State University
Year: 1986

description: The western spruce budworm, Choristoneura occidentalis Freeman (Lepidoptera: Tortricidae), is a serious defoliator of conifers in the western U.S. and western Canada. In 1985 epidemic levels of the budworm caused average tree defoliation in west-central Idaho to increase to 83%, up substantially from the 35% average tree defoliation of 1984. Associated with this increase in defoliation was a change in the relative stand defolation ranking between the two years. found to damage all types and In 1985 the budworm was developmental stages of reproductive structures of Douglas- fir, including: seedcone buds, pollen-cones buds, maturing cones, and seeds. Differential selection of feeding sites was observed, with a significantly higher proportion of larvae found in seedcone buds than in pollen-cone buds. Shortly after larval emergence, 25% of the total number of seed-cones buds were infested. A subsample of 171 branch tips indicated that only 9% of pollen-cones, while less than 2% of the vegetative buds contained larvae. A total of 640 cones from 21 trees were examined. Of these cones, 76% were infested with larvae, however not all of the seeds were destroyed. The average percent of destroyed seeds per tree was found to be exponentially related to the average current defoliation of the tree.
THE ROLE OF TRANSPORTATION IN THE DEVELOPMENT OF TOURISM IN NIGERIA
Creators: name: Musa, Ibrahim Jaro
name: Ndawayo, Buba Adamu
Publisher: name: tourismos
Year: 2011

description: This paper examines the relationship between transportation and the development of tourism in Nigeria. An attempt is made to quantitatively test the relationship between presence of transportation (as measured by road connectivity, road condition) and tourism development (as measured by location national parks) in Nigeria. It was found out that there are eight national parks located in different states in Nigeria. The analysis was conducted at two levels, the disaggregate and the aggregate. In the aggregate case, indexes of road connectivity is related to levels of tourism development (as measured by locations of national parks) within Nigeria. In the analysis at the disaggregate level multiple linear regression was used to explains the relationship between development of tourism and indexes of road development. Also the percentage method was used to support the result of the analysis. A major finding of the study is that transportation is a significant determinant of tourism development in the Nigeria. However, other factors which include availability of recreational and social facilities and security also play positive role because they encourage patronage. It was also found out that some of the national parks are well connected while some are poorly connected. Importantly, those not well connected have large number of good games, have rich ecosystem and fauna. The conclusion arrived at is that transportation plays important role in the development of tourism in Nigeria. Other key role factors which require attention are finance, protection, security and recreational facilities for relaxation.
description: tourismos, Vol. 6 No. 1 (2011)
title: Investigation of Host Selection by Mountain Pine Beetle (Dendroctonus Ponderosae) Hopk. in Lodgepole Pine (Pinus Contorta) Dougl.
Creators: name: Eager, Thomas James
Publisher: name: Utah State University
Year: 1986

description: Lodgepole pines Pinus contorta (Douglas) were treated by girdling to assess the response by an endemic population of mountain pine beetle Dendroctonus ponderosae (Hopkins) (Coleoptera: Scolytidae). Capture in 'sticky traps' indicated that the beetles were attracted while in flight towards the wounded trees. A significant difference in the landing rates of bark beetles between the treated and untreated trees indicated that the beetles were able to distinguish wounded from non-wounded trees while still in flight. Pressure chamber readings demonstrated that water stress developed in the girded trees when compared to the non-girdled trees.
Ruolo delle specie reattive dell'ossigeno e di caveole/raft lipidici nella biosegnalazione in linee cellulari umane
Creators: name: Caliceti, Cristiana <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: BIO/10 Biochimica

description: Membrane lipid rafts are detergent-resistant microdomains containing glycosphingolipids, cholesterol and glycosylphosphatidylinositol-linked proteins; they seem to be actively involved in many cellular processes including signal transduction, apoptosis, cell adhesion and migration. Lipid rafts may represent important functional platforms where redox signals are produced and transmitted in response to various agonists or stimuli. In addition, a new concept is emerging that could be used to define the interactions or amplification of both redox signalling and lipid raft-associated signalling. This concept is characterized by redox-mediated feed forward amplification in lipid platforms. It is proposed that lipid rafts are formed in response to various stimuli; for instance, NAD(P)H oxidase (Nox) subunits are aggregated or recruited in these platforms, increasing Nox activity. Superoxide and hydrogen peroxide generation could induce various regulatory activities, such as the induction of glucose transport activity and proliferation in leukaemia cells.
The aim of our study is to probe: i) the involvement of lipid rafts in the modulation of the glucose transporter Glut1 in human acute leukemia cells; ii) the involvement of plasma membrane caveolae/lipid rafts in VEGF-mediated redox signaling via Nox activation in human leukemic cells; iii) the role of p66shc, an adaptor protein, in VEGF signaling and ROS production in endothelial cells (ECs); iv) the role of Sindecan-2, a transmembrane heparan sulphate proteoglycan, in VEGF signaling and physiological response in ECs and v) the antioxidant and pro-apoptotic activities of simple dietary phenolic acids, i. e. caffeic, syringic and protocatechuic acids in leukemia cells, characterized by a very high ROS content.
Our results suggest that the role played by NAD(P)H oxidase-derived ROS in the regulation of glucose uptake, proliferation and migration of leukaemia and endothelial cells could likely occur through the control of lipid raft-associated signalling.