cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An investigation of type-I superconductivity in single crystal of Pb2Pd
Creators: name: Arushi
name: Motla, K.
name: Kataria, A.
name: Sharma, S.
name: Beare, J.
name: Pula, M.
name: Nugent, M.
name: Luke, G. M.
name: Singh, R. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have investigated the superconducting properties in a single crystal of a new superconductor Pb$_{2}$Pd via various techniques including magnetization, AC transport, transverse field muon spin rotation and relaxation (TF-$μ$SR), and heat capacity. Pb$_{2}$Pd crystallizes in a body-centred tetragonal structure with space group I4/$mcm$. All measurements confirm the superconducting transition temperature, T$_{C}$ = 3.0 $\pm$ 0.1 K. Electronic specific heat data are well described by the BCS fitting, suggesting that Pb$_{2}$Pd opens an isotropic gap on entering the superconducting state. The specific heat jump and $λ_{e-ph}$ value categorize Pb$_{2}$Pd as a moderately coupled superconductor. Magnetization and transverse field muon spin rotation measurements along with Ginzburg-Landau parameter, $κ$ < 1/$\sqrt{2}$ strongly infers that Pb$_{2}$Pd is a type I superconductor.
description: 7 pages, 8 figures
Chess, Chance and Conspiracy
Creators: name: Segal, Mark R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Chess and chance are seemingly strange bedfellows. Luck and/or randomness have no apparent role in move selection when the game is played at the highest levels. However, when competition is at the ultimate level, that of the World Chess Championship (WCC), chess and conspiracy are not strange bedfellows, there being a long and colorful history of accusations levied between participants. One such accusation, frequently repeated, was that all the games in the 1985 WCC (Karpov vs Kasparov) were fixed and prearranged move by move. That this claim was advanced by a former World Champion, Bobby Fischer, argues that it ought be investigated. That the only published, concrete basis for this claim consists of an observed run of particular moves, allows this investigation to be performed using probabilistic and statistical methods. In particular, we employ imbedded finite Markov chains to evaluate run statistic distributions. Further, we demonstrate how both chess computers and game data bases can be brought to bear on the problem.
description: Published at http://dx.doi.org/10.1214/088342306000000574 in the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
A Generalization Of Weibull Distribution
Creators: name: Shanker, Rama
name: Shukla, Kamlesh Kumar
Publisher: name: Reliability: Theory & Applications
Year: 2019
Subjects: Exponential distribution
Weibull distribution
Moments
Hazard rate function
Stochastic ordering
Maximum likelihood estimation
Application.

description: In this paper, a generalization of Weibull distribution (GWD), which includes Weibull and exponential distributions as special cases, has been proposed and investigated. Its moments, hazard rate function and stochastic ordering have been discussed. The method of maximum likelihood estimation has been discussed for estimating its parameters. The goodness of fit of the proposed distribution has been discussed with a real lifetime dataset and the fit has been found quite satisfactory over some well-known lifetime distributions.
An In-Memory Analog Computing Co-Processor for Energy-Efficient CNN Inference on Mobile Devices
Creators: name: Elbtity, Mohammed
name: Singh, Abhishek
name: Reidy, Brendan
name: Guo, Xiaochen
name: Zand, Ramtin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Hardware Architecture (cs.AR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we develop an in-memory analog computing (IMAC) architecture realizing both synaptic behavior and activation functions within non-volatile memory arrays. Spin-orbit torque magnetoresistive random-access memory (SOT-MRAM) devices are leveraged to realize sigmoidal neurons as well as binarized synapses. First, it is shown the proposed IMAC architecture can be utilized to realize a multilayer perceptron (MLP) classifier achieving orders of magnitude performance improvement compared to previous mixed-signal and digital implementations. Next, a heterogeneous mixed-signal and mixed-precision CPU-IMAC architecture is proposed for convolutional neural networks (CNNs) inference on mobile processors, in which IMAC is designed as a co-processor to realize fully-connected (FC) layers whereas convolution layers are executed in CPU. Architecture-level analytical models are developed to evaluate the performance and energy consumption of the CPU-IMAC architecture. Simulation results exhibit 6.5% and 10% energy savings for CPU-IMAC based realizations of LeNet and VGG CNN models, for MNIST and CIFAR-10 pattern recognition tasks, respectively.
description: 6 pages, 8 figures. arXiv admin note: text overlap with arXiv:2012.02695, arXiv:2006.01238
Modelling of an offline and online software for normalization of microarray data of gene expression by Perl, Bioperl and PerlTk and Perl-CGI
Creators: name: Gaurav Kumar Srivastava
name: Kumar, Santosh
name: Himanshu Pandey
Publisher: name: Reliability: Theory & Applications
Year: 2019

description: B-Chip Reverence is an online database which isfreely accessible for microarray redundancy removal & normalizationand various data analysis techniques are applied on the data. This software accurately handle the massive amount of data.The growing use of DNA microarrays in biomedical research has led to the proliferation of analysis tools. These software programs address different aspects of analysis (e.g. normalization and clustering within and across individual arrays) as well as extended analysis methods (e.g. clustering, annotation and mining of multiple datasets).After studying all the terms and problems related to Microarray technique, we tried to make an-open and user friendly software to deal with all the problems and to run all the steps of this technique, so that we used Perl & Perl-cgi. perl-cgi stands for Common Gateway Interface, is a standard programming interface between Web servers and external programs. perl-cgi executes external programs on the webserver.
Astronomical bounds on future big freeze singularity
Creators: name: Yurov, Artyom V.
name: Astashenok, Artyom V.
name: Gonzalez-Diaz, Pedro F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recently it was found that dark energy in the form of phantom generalized Chaplygin gas may lead to a new form of the cosmic doomsday, the big freeze singularity. Like the big rip singularity, the big freeze singularity would also take place at a finite future cosmic time, but unlike the big rip singularity it happens for a finite scale factor.Our goal is to test if a universe filled with phantom generalized Chaplygin gas can conform to the data of astronomical observations. We shall see that if the universe is only filled with generalized phantom Chaplygin gas with equation of state $p=-c^2s^2/ρ^α$ with $α
description: 8 pages
Moving Video Camera Vigilance Using DBSCAN
Creators: name: Jagdatta Singh
name: Gaurav Kumar Srivastava
name: Himanshu Pandey
Publisher: name: Reliability: Theory & Applications
Year: 2019

description: The author is trying to develop a model for dynamic or moving video camera vigilance using Density Based Clustering and location sensors. The authors try to exploit the rich functionality exposed by the machine learning paradigm in which the stochastic environment to learn is depicted as a two dimensional graph where the position of an object can be given by its coordinates. The author uses DBSCAN algorithm along with sensor enabled test ground area that keeps the X and Y co-ordinates of the moving objects. The idea here is to capture continuous video of the densest cluster of objects moving together. One practical usage of such system is a wild landscape where groups of animals are moving together to some destination. There will be a somewhat unorganized haphazard movement but we intend to capture only those animals that are greater in number as a group and the camera should move picturing them. This can be achieved by the DBSCAN algorithm
Dendrocrepidamine, a novel octahydroindolizine alkaloid from the roots of Dendrobium crepidatum
Creators: name: Ding, Xiao-Qian
name: Zou, Yu-Qing
name: Liu, Jian
name: Wang, Xia-Chang
name: Hu, Yang
name: Liu, Xiao
name: Zhang, Chao-Feng
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Plant Biology
subject: FOS: Biological sciences

description: A novel octahydroindolizine alkaloid, named dendrocrepidamine (1) with an unusual 18,19,19′-cyclopropanone-dendrocrepine skeleton, was isolated from the ethanol extract of the roots of Dendrobium crepidatum, along with six known compounds (2–7). The structure of 1 was elucidated through HR-ESIMS, NMR spectroscopic data and computational calculations. All compounds were examined for their inhibitory effects on nitric oxide (NO) production induced by lipopolysaccharide (LPS) in RAW264.7 cells with IC50 values in the range of 3.04–54.89 µM. In vivo, crepidatin (6) (80, 40 and 10 mg/kg) showed a significant protective effect against LPS-induced acute lung injury (ALI) in mice.
title: Spatial Differences In Maturity Schedules Of Female Dover Sole Off Oregon
Creators: name: Crone, P. R.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.An assessment of sexual maturity of Dover sole landed in Oregon from 1989 to 1991 indicated that females of the species had a 50% probability of being mature at ages 7.3 to 9.5, depending on when and where the sampling was conducted. Logistic regression models were used to document statistical differences (P <0.05) between maturity schedules of fish harvested in the northern and southern regions of the state. There was evidence that fish from southern Oregon waters reached sexual maturity at an earlier age and exhibited higher overall rates of maturity than fish inhabiting northern waters of the state.
Analysis of MAP/PH/1 Retrial Queue With Constant Retrial Rate, Bernoulli Schedule Vacation, Bernoulli Feedback, Breakdown and Repair
Creators: name: G. Ayyappan
name: R. Gowthami
Publisher: name: Reliability: Theory & Applications
Year: 2019
Subjects: Markovian arrival process
Phase type distribution
Retrial queues
Bernoulli vacation
Bernoulli feedback
Breakdown and Repair.

description: A retrial queueing model in which the inter arrival times follow Markovian Arrival Process(MAP) and the service times follow phase type distribution is studied. At the end of receiving the service, the customer has two options namely, either he may go to orbit with probability 𝑞1 to get the service again, if he is not satisfied or with probability 𝑝1, he may depart the system. Similarly, at the end of providing service, the server can either opt to take vacation with probability 𝑝2 or be idle with probability 𝑞2. During the busy period, the server may experience breakdown. Both the breakdown times and repair times of the server follow exponential distribution with parameter 𝜎 and 𝛿 respectively. The resulting QBD process is analysed in the steady state by employing matrix analytic method. The busy period analysis of our model has also been done. Finally, the numerical and graphical illustration of our model has been given.
The post day care surgery experience for parents of toddlers and preschoolers
Creators: name: Otterman, Pamela Joan
Publisher: name: University of British Columbia
Year: 2010

description: This study was designed to explore the parents' perspective and personal interpretations of the meaning of their childrens' first time day care surgery experience within the context of their everyday lives. The phenomenological method was used to guide data collection for this qualitative study. Data were collected through a series of 16 in-depth interviews with nine parents whose young children underwent a day care surgical procedure. The average age of the children was 23.8 months. Sample selection was guided by a purposive sampling technique. A semi-structured guide of open-ended questions was used for parent interviews. Analysis of the verbatim transcriptions was accomplished using the technique of constant comparative analysis. Informants gave detailed accounts of their experience and described the meanings and interpretations they assigned to it. The parents' accounts were synthesized into a descriptive framework of their experience which described three distinct chronological phases: the pre-hospitalization or preparatory phase, the hospitalization or operative phase, and the post-hospitalization or readjustment phase. It was apparent that the parents' experience extended well beyond the few hours they actually spent in the hospital setting. The study's findings revealed that parents perceived their experience as a stressful event in their everyday lives. New responsibilities were added to the usual tasks of parenting a toddler or preschooler resulting in parental role strain and an increased need for parental support. Parents reported feelings of fear, worry, and anxiety in varying intensity throughout the three phases of their experience. They used a variety of coping strategies to manage the stresses of their experience. The study findings were discussed in comparison to other authors' published works, placing these unique findings in context of the current literature. Implications for nursing practice, education, and research were presented.
Localization of light in a lamellar structure with left-handed medium : the light wheel
Creators: name: Tichit, Paul-Henri
name: Moreau, Antoine
name: Granet, Gérard
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The contra-directional coupling between a left-handed monomode waveguide and a right-handed monomode waveguide is rigorously studied using a complex plane analysis. Light is shown to rotate in this lamellar structure forming a very exotic mode which we have called a light wheel. The light wheel can be excited using evanescent coupling or by placing sources in one of the waveguides. This structure can thus be seen as a new type of cavity. It is a way to suppress the guided mode of a dielectric slab.
Crowd against the machine: A simulation-based benchmark tool to evaluate and compare robot capabilities to navigate a human crowd
Creators: name: Grzeskowiak, Fabien
name: Gonon, David
name: Dugas, Daniel
name: Paez-Granados, Diego
name: Chung, Jen
name: Nieto, Juan
name: Siegwart, Roland
name: Billard, Aude
name: Babel, Marie
name: Pettré, Julien
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The evaluation of robot capabilities to navigate human crowds is essential to conceive new robots intended to operate in public spaces. This paper initiates the development of a benchmark tool to evaluate such capabilities; our long term vision is to provide the community with a simulation tool that generates virtual crowded environment to test robots, to establish standard scenarios and metrics to evaluate navigation techniques in terms of safety and efficiency, and thus, to install new methods to benchmarking robots' crowd navigation capabilities. This paper presents the architecture of the simulation tools, introduces first scenarios and evaluation metrics, as well as early results to demonstrate that our solution is relevant to be used as a benchmark tool.
Dynamical models with a general anisotropy profile
Creators: name: Baes, M.
name: Van Hese, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Both numerical simulations and observational evidence indicate that the outer regions of galaxies and dark matter haloes are typically mildly to significantly radially anisotropic. The inner regions can be significantly non-isotropic, depending on the dynamical formation and evolution processes. In an attempt to break the lack of simple dynamical models that can reproduce this behaviour, we explore a technique to construct dynamical models with an arbitrary density and an arbitrary anisotropy profile. We outline a general construction method and propose a more practical approach based on a parameterized anisotropy profile. This approach consists of fitting the density of the model with a set of dynamical components, each of which have the same anisotropy profile. Using this approach we avoid the delicate fine-tuning difficulties other fitting techniques typically encounter when constructing radially anisotropic models. We present a model anisotropy profile that generalizes the Osipkov-Merritt profile, and that can represent any smooth monotonic anisotropy profile. Based on this model anisotropy profile, we construct a very general seven-parameter set of dynamical components for which the most important dynamical properties can be calculated analytically. We use the results to look for simple one-component dynamical models that generate simple potential-density pairs while still supporting a flexible anisotropy profile. We present families of Plummer and Hernquist models in which the anisotropy at small and large radii can be chosen as free parameters. We also generalize these two families to a three-parameter family that self-consistently generates the set of Veltmann potential-density pairs. (Abridged...)
description: 18 pages, accepted for publication in A&A
title: Results Of Exploratory Fishing Off The Northeastern United States
Creators: name: Moore, Jon A.
name: Galbraith, John K.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.From 1995 to 1997, exploratory deep-sea fishing was conducted along the continental slope, in canyons, and on certain seamounts by a few commercial fishers from New England. Most fishing occurred from the vicinity of Hudson Canyon to northeastern Georges Bank, and between depths of 310 and 1850 m. This fishing effort, and other recent research, have produced new findings concerning the composition of slope and seamount fish faunas within·this area, including the addition of 80 species new to the area. This corresponds to roughly a 15% increase in the total number of deep-sea pelagic and demersal species known off New England. Preliminary information is also provided on the catches and potential viability of commercial deep-sea fisheries in the region. A precautionary approach is recommended in the further development of deepwater fisheries.
Separation of the strain and finite size effect on the ferromagnetic properties of La_{0.5}Sr_{0.5}CoO_3 thin films
Creators: name: Xie, Changkun
name: Budnick, J. I.
name: Wells, B. O.
name: Woicik, J. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The ferromagnetic properties of epitaxial La$_{0.5}$Sr$_{0.5}$CoO$_3$ thin films have been studied. The magnetic transition is affected by both strain and finite thickness. We have used a series of films of different thickness and on different substrates in order to quantitatively determine the change in Curie temperature contributed by each effect. The phase diagram of T$_C$ versus in-plane strain suggests that the ferromagnetic transition temperature is suppressed by tensile strain and enhanced by compressive strain. The general method of separating strain and finite thickness effects should be applicable to any ordering phase transition in thin films.
description: 4 pages, 4 figures, to be submitted to Appl.Phys.Lett
title: Biology Of Black Anglerfish (Lophius Budegassa) In The Bay Of Biscay Waters, During 1996-1997
Creators: name: Quincoces, Ifiaki
name: Lucio, Paulino
name: Santurtun, Marina
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.A total of 1140 Black Anglerfish were analysed from monthly samples taken in the Bay of Biscay on board of commercial vessels and at the main fishing ports of the Basque Country during 1996-1997. The specimina length range was between 14.5-85.5 cm of total length. The total length (cm)-total weight (g) relationship was described by the multiplicative function: Wt = 0.015 L3•004, r = 0.9936. Other relationships (total length-<:ommercial gutted, -scientific gutted, -tail weight) were also obtained.The conversion factor for the commercial gutted (i.e. with liver) to total weight relationship was 1.21, and for the tail to total weight relationship was 2.54. The reproductive period in the Bay of Biscay observed, by macroscopic and histological studies, extends from April to July with a peak in May-July. The L50 was calculated at 34.5 cm in length for males, at 64.5 cm for females and at 49.0 cm for both sexes. The A50 was calculated at 6,0 years in age for males, at 10.4 years for females and at 9.0 years for both sexes. Sex ratio in fish below 65 cm in length did not appear to depart from I: 1; above this length females predominated. For growth studies, 2006 specimina were aged by illicia reading. Fish between 1-18 years old were found. Annual age-length keys were established. The annual parameters of the von Bertalanffy growth equation were for both sexes:L- = 100, t0 = 1.4581,K=0.1102, for Males: L- = 100, t0 = 1.1015, K= 0.1001 and for Females: L_ = I 00, 10 = 1.4772, K = 0.1113.
Maty's Biography of Abraham De Moivre, Translated, Annotated and Augmented
Creators: name: Bellhouse, David R.
name: Genest, Christian
Publisher: name: arXiv
Year: 2007
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: November 27, 2004, marked the 250th anniversary of the death of Abraham De Moivre, best known in statistical circles for his famous large-sample approximation to the binomial distribution, whose generalization is now referred to as the Central Limit Theorem. De Moivre was one of the great pioneers of classical probability theory. He also made seminal contributions in analytic geometry, complex analysis and the theory of annuities. The first biography of De Moivre, on which almost all subsequent ones have since relied, was written in French by Matthew Maty. It was published in 1755 in the Journal britannique. The authors provide here, for the first time, a complete translation into English of Maty's biography of De Moivre. New material, much of it taken from modern sources, is given in footnotes, along with numerous annotations designed to provide additional clarity to Maty's biography for contemporary readers.
description: Published at http://dx.doi.org/10.1214/088342306000000268 in the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Influence of the organic cation disorder on photoconductivity in ethylenediammonium lead iodide, NH3CH2CH2NH3PbI4
Creators: name: Glushkova, Anastasiia
name: Arakcheeva, Alla
name: Pattison, Philip
name: Kollár, Márton
name: Andričević, Pavao
name: Náfrádi, Bálint
name: Forró, László
name: Horváth, Endre
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the synthesis and crystal structure of an organic inorganic compound, ethylenediammonium lead iodide, NH3CH2CH2NH3PbI4. Synchrotron based single crystal X-ray diffraction experiments revealed that the pristine and thermally treated crystals differ in the organic cation behaviour, which is characterized by a partial disorder in the thermally treated crystal. Based on current voltage measurements, increased disorder of the organic cation is associated with enhanced photoconductivity. This compound could be a potential candidate for interface engineering in lead halide perovskite-based optoelectronic devices.
description: 11 pages, 6 figures, 2 tables
Evidence for the Evolution of Young Early-Type Galaxies in the GOODS/CDF-S Field
Creators: name: Puzia, Thomas H.
name: Mobasher, Bahram
name: Goudfrooij, Paul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have developed an efficient photometric technique for identifying young early-type galaxy candidates using a combination of photometric redshifts, spectral-type classification, and optical/near-infrared colors. Applying our technique to the GOODS HST/ACS and VLT/ISAAC data we have selected a complete and homogeneous sample of young elliptical candidates among early-type field galaxies. The distribution of structural parameters for these candidates shows that their selection, which is based on early spectral types, is fully consistent with early morphological types. We investigate the evolution of their luminosities and colors as a function of redshift and galaxy mass and find evidence for an increasing starburst mass fraction in these young early-type galaxy candidates at higher redshifts, which we interpret in terms of massive field galaxies experiencing more massive/intense starbursts at higher redshifts. Moreover, we find indications for a systematically larger young elliptical fraction among sub-L*/2 early-type galaxies compared to their brighter counterparts. The total fraction among the field early-type galaxies increases with redshift, irrespective of galaxy luminosity. Our results are most consistent with galaxy formation scenarios in which stars in massive early-type field galaxies are assembled earlier than in their low-mass counterparts.
description: 11 pages, 10 figures, accepted for publication in AJ
title: Biological Aspects Of White Anglerfish (Lophius Piscatorius) In The Bay Of Biscay (ICES Division Viiia,B,D), In 1996·1997
Creators: name: Quincoces, Ifiaki
name: Santurtun, Marina
name: Lucio, Paulino
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.A total of 1129 White Anglerfish were analysed from monthly samples taken in the Bay of Biscay on board of commercial vessels and at the main fishing ports of the Basque Country during 1996-1997. The specimina length range was between 12.5-136.5 cm of total length. The total length (cm)-total weight (g) relationship was described by the multiplicative function: Wt = 0.2636 L2•84', r = 0.9883. Other relationships (total length-commercial gutted, -scientific gutted, -tail weight) have been also obtained.The conversion factor calculated for the commercial gutted (i.e. with Ii ver) to total weight relationship was 1.14, and for the tail to total weight relationship was 2. 79. The reproductive period in the Bay of Biscay, observed by macroscopic and histological studies, extends from May to August with a peak in May-June. The L50 was calculated at 52.7 cm in length for males, at 73.2 cm for females and at 68.2 cm for sexes combined. The A50 was calculated at 5.0 years for males, at 7.0 years for females and at 6.0 years for sexes combined. Sex ratio in fish below 80 cm in length did not appear to depart from l: I: above this length females clearly predominated. For growth studies I 385 exemplars were aged by illicia reading. Fish between I and 25 years old were found. Annual age-length keys were established. Annual parameters of the von Bertalanffy growth equation were calculated for both sexes: L_= 150, t, = -0.0236, K = 0.0882, for Males: L-= 100, 10 = - 0 . .1051, K = 0.1517 and for Females: L_= 150, to= -0.2961, K = 0.0882.
Wives' perceptions of social support while caring for husbands with multiple sclerosis
Creators: name: Stovel, Toni Clare
Publisher: name: University of British Columbia
Year: 2010

description: This study was designed to gain an understanding of wives' perceptions of social support while living with and caring for husbands who have multiple sclerosis. In order to understand the experience from the perspective of the participants the qualitative method of phenomenology was chosen. Data collection and data analysis occurred concurrently. Data were collected through unstructured interviews with each of the eight wives who participated. Each transcribed interview was analyzed separately and in relation to the other interviews. Emerging themes were validated and clarified by the participants in the second interview. Eventually an organizing framework emerged that revealed two central themes common to the wives' perceptions of social support. The first central theme describes the wives caregiving experience which was the context for understanding the wives' perceptions of social support. Within this central theme three sub-themes are explored: the commitment of these wives in providing care to their husbands, their desire to have some distance from caregiving, and ambivalence arising from the simultaneous and conflicting desires to provide care and to distance from caregiving. The second central theme describes the nature of support as perceived by the wives. This theme builds upon the first theme and discusses three sub-themes: support for caregiving, support for distancing, and support for ambivalence. Support for caregiving discusses information, practical assistance, acknowledgement, and finances. Support for distancing discusses social activities, professional services, and anticipatory support. Support for ambivalence discusses the desire these wives have to be understood. These findings are discussed in relation to the socialization of women into expressive and caring roles. Furthermore, the reasons why these wives had difficulty in accepting support are explored. The implications for nursing practice, education, and research are delineated in light of these findings.
PAC Fields over Finitely Generated Fields
Creators: name: Bary-Soroker, Lior
name: Jarden, Moshe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 12E30

description: We prove the following theorem for a finitely generated field $K$: Let $M$ be a Galois extension of $K$ which is not separably closed. Then $M$ is not PAC over $K$.
description: 7 pages, Math. Z
ZIL 131 XARBIY AVTOMABILINING TUZILISHI VA UNGA TEXNIK XIZMAT KO'RSATISH
Creators: name: Xasanov, Xondamir
name: Maxkamov, Furqatbek
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada zil 131 xarbiy avtomabilining tarixi, tuzilishi,  va unga texnik xizmat ko'rsatish haqida muhokama qilinadi
The dynamical viability of scalar-tensor gravity theories
Creators: name: Agarwal, Nishant
name: Bean, Rachel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We establish the dynamical attractor behavior in scalar-tensor theories of dark energy, providing a powerful framework to analyze classes of theories, predicting common evolutionary characteristics that can be compared against cosmological constraints. In the Jordan frame the theories are viewed as a coupling between a scalar field, Φ, and the Ricci scalar, R, F(Φ)R. The Jordan frame evolution is described in terms of dynamical variables m \equiv d\ln F/d\ln Φand r \equiv -ΦF/f, where F(Φ) = d f(Φ)/dΦ. The evolution can be alternatively viewed in the Einstein frame as a general coupling between scalar dark energy and matter, β. We present a complete, consistent picture of evolution in the Einstein and Jordan frames and consider the conditions on the form of the coupling F and βrequired to give the observed cold dark matter (CDM) dominated era that transitions into a late time accelerative phase, including transitory accelerative eras that have not previously been investigated. We find five classes of evolutionary behavior of which four are qualitatively similar to those for f(R) theories (which have β=1/2). The fifth class exists only for |β| < \sqrt{3}/4, i.e. not for f(R) theories. In models giving transitory late time acceleration, we find a viable accelerative region of the (r,m) plane accessible to scalar-tensor theories with any coupling, β(at least in the range |β| \leq 1/2, which we study in detail), and an additional region open only to theories with |β| < \sqrt{3}/4.
description: 24 pages, 3 figures
On the contribution of the X-ray source to the extended nebular HeII emission in IZw18
Creators: name: Kehrig, C.
name: Guerrero, M. A.
name: Vilchez, J. M.
name: Ramos-Larios, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Nebular HeII emission implies the presence of energetic photons (E$\ge$54 eV). Despite the great deal of effort dedicated to understanding HeII ionization, its origin has remained mysterious, particularly in metal-deficient star-forming (SF) galaxies. Unfolding HeII-emitting, metal-poor starbursts at z ~ 0 can yield insight into the powerful ionization processes occurring in the primordial universe. Here we present a new study on the effects that X-ray sources have on the HeII ionization in the extremely metal-poor galaxy IZw18 (Z ~ 3 % Zsolar), whose X-ray emission is dominated by a single high-mass X-ray binary (HMXB). This study uses optical integral field spectroscopy, archival Hubble Space Telescope observations, and all of the X-ray data sets publicly available for IZw18. We investigate the time-variability of the IZw18 HMXB for the first time; its emission shows small variations on timescales from days to decades. The best-fit models for the HMXB X-ray spectra cannot reproduce the observed HeII ionization budget of IZw18, nor can recent photoionization models that combine the spectra of both very low metallicity massive stars and the emission from HMXB. We also find that the IZw18 HMXB and the HeII-emission peak are spatially displaced at a projected distance of $\simeq$ 200 pc. These results reduce the relevance of X-ray photons as the dominant HeII ionizing mode in IZw18, which leaves uncertain what process is responsible for the bulk of its HeII ionization. This is in line with recent work discarding X-ray binaries as the main source responsible for HeII ionization in SF galaxies.
description: 7 pages, 3 figures, 2 tables; Accepted for publication in The Astrophysical Journal Letters
Spectral evolution of GRB 060904A observed with Swift and Suzaku -- Possibility of Inefficient Electron Acceleration
Creators: name: Yonetoku, Daisuke
name: Tanabe, Sachiko
name: Murakami, Toshio
name: Emura, Naomi
name: Aoyama, Yuka
name: Kidamura, Takashi
name: Kodaira, Hironobu
name: Kodama, Yoshiki
name: Kozaka, Ryota
name: Nashimoto, Takuro
name: Okuno, Shinya
name: Yokota, Satoshi
name: Yoshinari, Satoru
name: Abe, Keiichi
name: Onda, Kaori
name: Tashiro, Makoto S.
name: Urata, Yuji
name: Nakagawa, Yujin E.
name: Sugita, Satoshi
name: Yamaoka, Kazutaka
name: Yoshida, Atsumasa
name: Ishimura, Takuto
name: Kawai, Nobuyuki
name: Shimokawabe, Takashi
name: Kinugasa, Kenzo
name: Kohmura, Takayoshi
name: Kubota, Kaori
name: Sugiyasu, Kei
name: Ueda, Yoshihiro
name: Masui, Kensuke
name: Nakazawa, Kazuhiro
name: Takahashi, Tadayuki
name: Maeno, Shouta
name: Sonoda, Eri
name: Yamauchi, Makoto
name: Kuwahara, Makoto
name: Tamagawa, Toru
name: Matsuura, Daisuke
name: Suzuki, Motoko
name: Barthelmy, Scott
name: Gehrels, Neil
name: Nousek, John
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We observed an X-ray afterglow of GRB 060904A with the Swift and Suzaku satellites. We found rapid spectral softening during both the prompt tail phase and the decline phase of an X-ray flare in the BAT and XRT data. The observed spectra were fit by power-law photon indices which rapidly changed from $Γ= 1.51^{+0.04}_{-0.03}$ to $Γ= 5.30^{+0.69}_{-0.59}$ within a few hundred seconds in the prompt tail. This is one of the steepest X-ray spectra ever observed, making it quite difficult to explain by simple electron acceleration and synchrotron radiation. Then, we applied an alternative spectral fitting using a broken power-law with exponential cutoff (BPEC) model. It is valid to consider the situation that the cutoff energy is equivalent to the synchrotron frequency of the maximum energy electrons in their energy distribution. Since the spectral cutoff appears in the soft X-ray band, we conclude the electron acceleration has been inefficient in the internal shocks of GRB 060904A. These cutoff spectra suddenly disappeared at the transition time from the prompt tail phase to the shallow decay one. After that, typical afterglow spectra with the photon indices of 2.0 are continuously and preciously monitored by both XRT and Suzaku/XIS up to 1 day since the burst trigger time. We could successfully trace the temporal history of two characteristic break energies (peak energy and cutoff energy) and they show the time dependence of $\propto t^{-3} \sim t^{-4}$ while the following afterglow spectra are quite stable. This fact indicates that the emitting material of prompt tail is due to completely different dynamics from the shallow decay component. Therefore we conclude the emission sites of two distinct phenomena obviously differ from each other.
description: 19 pages, 9 figures, accepted for publication in PASJ (Suzaku 2nd Special Issue)
Thermal correlation functions in CFT and factorization
Creators: name: Rodriguez-Gomez, D.
name: Russo, J. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study 2-point and 3-point functions in CFT at finite temperature for large dimension operators using holography. The 2-point function leads to a universal formula for the holographic free energy in $d$ dimensions in terms of the $c$-anomaly coefficient. By including $α'$ corrections to the black brane background, one can reproduce the leading correction at strong coupling. In turn, 3-point functions have a very intricate structure, exhibiting a number of interesting properties. In simple cases, we find an analytic formula, which reduces to the expected expressions in different limits. When the dimensions satisfy $Δ_i= Δ_j+ Δ_k$, the thermal 3-point function satisfies a factorization property. We argue that in $d>2$ factorization is a reflection of the semiclassical regime.
description: 26 pages
Strangers in the night: Discovery of a dwarf spheroidal galaxy on its first Local Group infall
Creators: name: Chapman, S. C.
name: Penarrubia, J.
name: Ibata, R.
name: McConnachie, A.
name: Martin, N.
name: Irwin, M.
name: Blain, A.
name: Lewis, G. F.
name: Letarte, B.
name: Lo, K.
name: Ludlow, A.
name: O'neil, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present spectroscopic observations of the AndXII dwarf spheroidal galaxy using DEIMOS/Keck-II, showing it to be moving rapidly through the Local Group (-556 km/s heliocentric velocity, -281 km/s relative to Andromeda from the MW), falling into the Local Group from ~115 kpc beyond Andromeda's nucleus. AndXII therefore represents a dwarf galaxy plausibly falling into the Local Group for the first time, and never having experienced a dense galactic environment. From Green Bank Telescope observations, a limit on the H{I} gas mass of <3000 Msun suggests that AndXII's gas could have been removed prior to experiencing the tides of the Local Group galaxies. Orbit models suggest the dwarf is close to the escape velocity of M31 for published mass models. AndXII is our best direct evidence for the late infall of satellite galaxies, a prediction of cosmological simulations.
description: 4 pages 5 figures 1 table, accepted in ApJ, july issue
title: Ageing Of Roundnose Grenadier (Coryphaenoides Rupestris Gunn.) From Otoliths
Creators: name: Draganik, B.
name: Psuty-Lipska, I.
name: Janusz, J.
Publisher: name: ASC 1998 - O
Year: 2024
Subjects: Fisheries and aquaculture
Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Samples of grenadier were collected from the catches effected by two Polish vessels, which operated in the Northeastern Atlantic (ICES Fishing Area XII) from April to July 1997. The otoliths (sagitta) were used for age determination of 309 fish measuring from 25 to 100 cm (in total length). The readability of broken and burned otoliths proved to be unsatisfactory.
Asymmetric quantum error correction via code conversion
Creators: name: Stephens, A. M.
name: Evans, Z. W. E.
name: Devitt, S. J.
name: Hollenberg, L. C. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In many physical systems it is expected that environmental decoherence will exhibit an asymmetry between dephasing and relaxation that may result in qubits experiencing discrete phase errors more frequently than discrete bit errors. In the presence of such an error asymmetry, an appropriately asymmetric quantum code - that is, a code that can correct more phase errors than bit errors - will be more efficient than a traditional, symmetric quantum code. Here we construct fault tolerant circuits to convert between an asymmetric subsystem code and a symmetric subsystem code. We show that, for a moderate error asymmetry, the failure rate of a logical circuit can be reduced by using a combined symmetric asymmetric system and that doing so does not preclude universality.
description: 5 pages, 8 figures, presentation revised, figures and references added
A Search for TeV Gamma-ray Emission from Pulsar Tails by VERITAS
Creators: name: Benbow, Wystan
name: Brill, A.
name: Buckley, James
name: Capasso, M
name: Chromey, A
name: Errando, M.
name: Falcone, Abraham
name: Farrell, K. A.
name: Feng, Qi
name: Finley, J
name: Foote, G. M.
name: Fortson, Lucy
name: Furniss, Amy
name: Gent, Alasdair
name: Giuri, C
name: Hanna, David
name: Hassan, Tarek
name: Hervet, Olivier
name: Holder, Jamie
name: Hughes, G
name: Humensky, T. B.
name: Jin, Weidong
name: Kaaret, Philip
name: Kargaltsev, Oleg
name: Kertzman, Mary P.
name: Kieda, David
name: Klingler, Noel
name: Kumar, Sajan
name: Lang, M
name: Lundy, M
name: Maier, Gernot
name: McGrath, C. E.
name: Moriarty, Patrick
name: Mukherjee, Reshmi
name: Nieto, D
name: Nievas-Rosillo, M
name: O'Brien, S
name: Ong, Rene A.
name: Otte, A. N.
name: Patel, S.
name: Pfrang, Konstantin
name: Pohl, Martin
name: Prado, Raul
name: Quinn, John
name: Ragan, Kenneth J.
name: P.
name: Reynolds, T.
name: Ribeiro, D
name: Richards, G. T.
name: Roache, Emmet Thomas
name: Ryan, James
name: Santander, Marcos
name: Sembroski, Glenn H
name: Shang, R
name: Volkov, Igor
name: Wakely, S. P
name: Weinstein, Amanda
name: Wilcox, P.
name: Williams, D. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the search for very-high-energy gamma-ray emission from the regions around three nearby supersonic pulsars (PSR B0355+54, PSR J0357+3205 and PSR J1740+1000) that exhibit long X-ray tails. To date there is no clear detection of TeV emission from any pulsar tail that is prominent in X-ray or radio. We provide upper limits on the TeV flux, and luminosity, and also compare these limits with other pulsar wind nebulae detected in X-rays and the tail emission model predictions. We find that at least one of the three tails is likely to be detected in observations that are a factor of 2-3 more sensitive. The analysis presented here also has implications for deriving the properties of pulsar tails, for those pulsars whose tails could be detected in TeV.
description: 21 pages, 6 figures
Linear meson and baryon trajectories in AdS/QCD
Creators: name: Forkel, Hilmar
name: Beyer, Michael
name: Frederico, Tobias
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An approximate holographic dual of QCD is constructed and shown to reproduce the empirical linear trajectories of universal slope on which the square masses of radially and orbitally excited hadrons join. Conformal symmetry breaking and other IR effects are described exclusively by deformations of the anti-de Sitter background metric. The predictions for the light hadron spectrum include new relations between ground state masses and trajectory slopes and are in good overall agreement with experimental data.
description: 4 pages
Convective core entrainment in 1D main sequence stellar models
Creators: name: Scott, L. J. A.
name: Hirschi, R.
name: Georgy, C.
name: Arnett, W. D.
name: Meakin, C.
name: Kaiser, E. A.
name: Ekström, S.
name: Yusof, N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: 3D hydrodynamics models of deep stellar convection exhibit turbulent entrainment at the convective-radiative boundary which follows the entrainment law, varying with boundary penetrability. We implement the entrainment law in the 1D Geneva stellar evolution code. We then calculate models between 1.5 and 60 M$_{\odot}$ at solar metallicity ($Z=0.014$) and compare them to previous generations of models and observations on the main sequence. The boundary penetrability, quantified by the bulk Richardson number, $Ri_{\mathrm{B}}$, varies with mass and to a smaller extent with time. The variation of $Ri_{\mathrm{B}}$ with mass is due to the mass dependence of typical convective velocities in the core and hence the luminosity of the star. The chemical gradient above the convective core dominates the variation of $Ri_{\mathrm{B}}$ with time. An entrainment law method can therefore explain the apparent mass dependence of convective boundary mixing through $Ri_{\mathrm{B}}$. New models including entrainment can better reproduce the mass dependence of the main sequence width using entrainment law parameters $A \sim 2 \times 10^{-4}$ and $n=1$. We compare these empirically constrained values to the results of 3D hydrodynamics simulations and discuss implications.
description: 14 pages, 11 figures, accepted for publication in MNRAS
Pseudo-Dirac Bino Dark Matter
Creators: name: Hsieh, Ken
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: While the bino-dominated lightest neutralino of the minimal supersymmetric Standard Model (MSSM) is an interesting and widely-studied candidate of the dark matter, the p-wave suppression of its annihilation cross section requires fine-tunings of the MSSM spectra to be consistent with WMAP observations. We propose pseudo-Dirac bino that arises in theories with D-type supersymmetry-breaking as an intriguing alternative candidate of dark matter. The pseudo-Dirac nature of the bino gives a natural mechanism of enhanced co-annihilation because these two states are degenerate in the absence of electroweak symmetry breaking. In addition, the lightest state can be consistent with limits of direct detection experiments because of the lack of vector interactions, as with the case of the MSSM bino.
description: 18 pages, 2 figures, REVTEX, to be published in PRD, made minor changes and added comments to match the published version