cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Progressive Sample Mining and Representation Learning for One-Shot Person Re-identification with Adversarial Samples
Creators: name: Li, Hui
name: Xiao, Jimin
name: Sun, Mingjie
name: Lim, Eng Gee
name: Zhao, Yao
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper, we aim to tackle the one-shot person re-identification problem where only one image is labelled for each person, while other images are unlabelled. This task is challenging due to the lack of sufficient labelled training data. To tackle this problem, we propose to iteratively guess pseudo labels for the unlabeled image samples, which are later used to update the re-identification model together with the labelled samples. A new sampling mechanism is designed to select unlabeled samples to pseudo labelled samples based on the distance matrix, and to form a training triplet batch including both labelled samples and pseudo labelled samples. We also design an HSoften-Triplet-Loss to soften the negative impact of the incorrect pseudo label, considering the unreliable nature of pseudo labelled samples. Finally, we deploy an adversarial learning method to expand the image samples to different camera views. Our experiments show that our framework achieves a new state-of-the-art one-shot Re-ID performance on Market-1501 (mAP 42.7%) and DukeMTMC-Reid dataset (mAP 40.3%). Code will be available soon.
Boundary terms for supergravity and heterotic M-Theory
Creators: name: Moss, Ian G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper considers eleven dimensional supergravity on a manifold with boundary and the theories related to heterotic $M$-theory, in which the matter is confined to the boundary. New low energy actions and boundary conditions on supergravity fields are derived. Previous problems with infinite constants in the action are overcome. The new boundary conditions are shown to be consistent with supersymmetry, and their role in the ten dimensional reduction and gaugino condensation is briefly discussed.
description: 16 pages, ReVTeX, new section on 10D reduction
Waterborne Transportation Benefits Received by Iowa Corn Farmers From the Mississippi River
Creators: name: Buxton, Freeman K.
name: Buxton, Freeman K.
Publisher: name: Unknown
Year: 1976
Subjects: Public Economics

description: The Army Corps of Engineers now spends about $150 million annually for shallow draft navigation projects and maintenance operations. This sizeable federal expenditure has helped to provide the low cost water transportation rates found on the inland waterways. However, the question of who benefits from these comparatively low water charges has been presented.
Encouraging Enterprise for Ph.D. students and Postdoctoral fellows – capitalising on a rich source of Innovation
Creators: name: Phillips, Robert
Publisher: name: figshare
Year: 2020
Subjects: subject: 150304 Entrepreneurship
subject: FOS: Economics and business

description: Proceedings of the 18th IntEnt Conference (2008) Oxford (Ohio), USA
Detecting compact dark matter in galaxy clusters via gravitational microlensing: A2218 & A370
Creators: name: Tuntsov, Artem
name: Lewis, Geraint
name: Ibata, Rodrigo
name: Kneib, Jean-Paul
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: After decades of searching, the true nature of dark matter still eludes us. One potential probe of the form of dark matter in galaxy clusters is to search for microlensing variability in the giant arcs and arclets. In this paper, a simple method is introduced to characterize pixel variability in the limit of high optical depth to microlensing. Expanding on earlier work, the expected microlensing signal for two massive clusters, A2218 & A370 is calculated. It is found that the microlensing signal depends sensitively upon the mix of smooth and compact dark matter in the cluster. Comparison of two deep exposures taken with James Webb Space Telescope or two hour long exposures taken with a 30-metre class telescope in two epochs separated by a few years will possibly detect about a few dozen pixels which show strong variability due to microlensing at five sigma level, revealing wealth of information on the microlensing population.
description: 15 pages, 5 figures. Accepted for publication in MNRAS
Retinal vessel segmentation by probing adaptive to lighting variations
Creators: name: Noyel, Guillaume
name: Vartin, Christine
name: Boyle, Peter
name: Kodjikian, Laurent
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Numerical Analysis (math.NA)
subject: Signal Processing (eess.SP)
subject: Medical Physics (physics.med-ph)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: We introduce a novel method to extract the vessels in eye fun-dus images which is adaptive to lighting variations. In the Logarithmic Image Processing framework, a 3-segment probe detects the vessels by probing the topographic surface of an image from below. A map of contrasts between the probe and the image allows to detect the vessels by a threshold. In a lowly contrasted image, results show that our method better extract the vessels than another state-of the-art method. In a highly contrasted image database (DRIVE) with a reference , ours has an accuracy of 0.9454 which is similar or better than three state-of-the-art methods and below three others. The three best methods have a higher accuracy than a manual segmentation by another expert. Importantly, our method automatically adapts to the lighting conditions of the image acquisition.
description: Proceedings of 2020 IEEE 17th International Symposium on Biomedical Imaging (ISBI).To appear in https://ieeexplore.ieee.org
Inhomogeneous atomic Bose-Fermi mixtures in cubic lattices
Creators: name: Cramer, M.
name: Eisert, J.
name: Illuminati, F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We determine the ground state properties of inhomogeneous mixtures of bosons and fermions in cubic lattices by studying the Bose-Fermi Hubbard model including parabolic confining potentials. We present the exact solution in the limit of vanishing hopping (ultradeep lattices) and study the resulting domain structure of composite particles. For finite hopping we determine the domain boundaries between Mott-insulator plateaux and hopping-dominated regions for lattices of arbitrary dimensionality within perturbation theory. The results are compared with a new numerical method that is based on a Gutzwiller variational approach for the bosons and an exact treatment for the fermions. The findings can be applied as a guideline for future experiments with trapped atomic Bose-Fermi mixtures in optical lattices.
description: 4 pages, 3 figures, new material added
Insects and Human Health: An In-Depth Exploration of Medical Entomology and Its Impact on Public Health
Creators: name: Suresh Kumar Mahala1*, Anil Kumar Geela2, Reetu Choudhary2, Manoj Kumar Mahla3 and S Ramesh Babu4
Publisher: name: The Science world a Monthly e magazine
Year: 2024

description: Medical entomology is a crucial field that examines the relationship between insects and human health, focusing on how various insect species impact the prevalence, transmission, and control of diseases. This discipline encompasses the study of vectors such as mosquitoes, ticks, and fleas, which are responsible for transmitting pathogens that cause significant public health challenges, including malaria, dengue fever, Lyme disease, and Zika virus. In addition to vector-borne diseases, medical entomology also addresses issues related to insect allergies, bites, and stings, which can lead to severe health complications. As global climate change and urbanization continue to influence insect populations and disease dynamics, the role of medical entomology becomes increasingly vital in safeguarding public health and enhancing disease prevention efforts.
Lasing from multipole topological corner states
Creators: name: Kim, Ha-Reem
name: Hwang, Min-Soo
name: Smirnova, Daria
name: Jeong, Kwang-Yong
name: Kivshar, Yuri
name: Park, Hong-Gyu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Topological photonics provides a fundamental framework for robust manipulation of light, including directional transport and localization with built-in immunity to disorder. Combined with an optical gain, active topological cavities hold special promise for a design of light-emitting devices. Most studies to date have focused on lasing at topological edges of finite systems or domain walls. Recently discovered higher-order topological phases enable strong high-quality confinement of light at the corners. Here we demonstrate lasing action of corner states in a nanophotonic topological cavity. We identify four multipole corner modes with distinct emission profiles via hyperspectral imaging and discern signatures of non-Hermitian radiative coupling of leaky topological states. In addition, depending on the pump position in a large-size cavity, we selectively generate lasing from either edge or corner states within the topological bandgap. Our findings introduce pathways to engineer collective resonances and tailor generation of light in active topological circuits.
description: 26 pages, 10 figures
Comprehensive Evaluation Model of Livable City Based on Fuzzy Comprehensive Evaluation Method
Creators: name: XU, Ao
name: ZHANG, Jinchao
name: LI, Mingyuan
name: XU, Ao
name: ZHANG, Jinchao
name: LI, Mingyuan
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Dynamic entropy weight method, Fuzzy comprehensive evaluation method, MATLAB

description: This paper firstly introduced the degree of livability of a city from the social civilization, economic affluence, environmental beauty, resource carrying capacity, and life convenience. Based on the principle of the fuzzy comprehensive evaluation, it analyzed the connection between influencing factors, and established a comprehensive evaluation model for calculation of the livability index of a city. Finally, it obtained the relative livability of each city and the ranking of livability of each city.
Research on Agricultural Subsidy Policy Adjustment under the Guidance of Green Development
Creators: name: HU, Qin
name: WEI, Junying
name: HU, Qin
name: WEI, Junying
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Green development, Agricultural subsidies, Adjustment

description: Although China's agricultural subsidies have played a certain positive role, they also have some negative effects. This paper analyzes the relationship between agricultural green development and agricultural subsidies, points out the incompatibility between agricultural subsidies and agricultural green development at this stage. Finally, aimed at adjusting agricultural subsidy policy to promote agricultural green development, the article puts forward the corresponding measures and recommendations.
On Kurepa's problems in number Theory
Creators: name: Ivić, Aleksandar
name: Mijajlović, Žarko
Publisher: name: arXiv
Year: 2003
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11A05

description: We discuss some problems in number theory posed by Djuro Kurepa (1907-1993), including his classical left factorial hypothesis that an odd prime $p$ does not divide $0! + 1! + ... + (p-1)!$.
description: 12 pages
HEP Applications Evaluation of the EDG Testbed and Middleware
Creators: name: Augustin, I.
name: Carminati, F.
name: Closier, J.
name: van Herwijnen, E.
name: Blaising, J. J.
name: Boutigny, D.
name: Charlot, C.
name: Garonne, V.
name: Tsaregorodtsev, A.
name: Bos, K.
name: Templon, J.
name: Capiluppi, P.
name: Fanfani, A.
name: Barbera, R.
name: Negri, G.
name: Perini, L.
name: Resconi, S.
name: Sitta, M.
name: Reale, M.
name: Vicinanza, D.
name: Bagnasco, S.
name: Cerello, P.
name: Sciaba, A.
name: Smirnova, O.
name: Colling, D.
name: Harris, F.
name: Burke, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: J.2

description: Workpackage 8 of the European Datagrid project was formed in January 2001 with representatives from the four LHC experiments, and with experiment independent people from five of the six main EDG partners. In September 2002 WP8 was strengthened by the addition of effort from BaBar and D0. The original mandate of WP8 was, following the definition of short- and long-term requirements, to port experiment software to the EDG middleware and testbed environment. A major additional activity has been testing the basic functionality and performance of this environment. This paper reviews experiences and evaluations in the areas of job submission, data management, mass storage handling, information systems and monitoring. It also comments on the problems of remote debugging, the portability of code, and scaling problems with increasing numbers of jobs, sites and nodes. Reference is made to the pioneeering work of Atlas and CMS in integrating the use of the EDG Testbed into their data challenges. A forward look is made to essential software developments within EDG and to the necessary cooperation between EDG and LCG for the LCG prototype due in mid 2003.
description: Talk from the 2003 Computing in High Energy and Nuclear Physics Conference (CHEP03), La Jolla, CA, USA, March 2003, 7 pages. PSN THCT003
Stellifer Oken 1817
Creators: name: Chao, Ning Labbish
name: Carvalho-Filho, Alfredo
name: Santos, Jonas De Andrade
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Sciaenidae
Stellifer

description: Conclusions on Stellifer and sciaenid taxonomy
 The subfamily Stelliferinae is unique within Sciaenidae by having a two-chambered gas bladder and an enlarged pair of lapillus, about the same size as the sagitta. Both characters are also present in the Indo-West Pacific Johnius (tribe Johniini) which has a slightly enlarged lapillus but less than one-third the size of the sagitta, they also have an expanded anterior end of the gas bladder (Chao 1986; Chao et al. 2019). Thus, because they are distant in sciaenid phylogeny, their share a last common ancestor dating from the Late Oligocene to Early Miocene expansions (Lo et al. 2015), these characters are probably convergent.
 In this study, we found that Stellife r species (e.g. S. collettei) can show significant geographic variation. Recent studies of Southwestern Atlantic sciaenids, such as Bairdiella (Marceniuk et al. 2019), Macrodon (Carvalho-Filho et al. 2010), Menticirrhus (Marceniuk et al. 2020), and Isopisthus (Guimarães-Costa et al. 2020) have shown that cryptic species are not uncommon. These studies demonstrated that the hidden diversity is often found in species caught as fisheries by-catch, reinforcing the need for detailed studies on taxonomy and zoogeography that can lead to better conservation management. We expect that Stellifer and widely distributed sciaenids (e.g. Cynoscion and Micropogonias) might have similar patterns, when samples become available for further molecular and morphological study.
description: Published as part of Chao, Ning Labbish, Carvalho-Filho, Alfredo & Santos, Jonas De Andrade, 2021, Five new species of Western Atlantic stardrums, Stellifer (Perciformes: Sciaenidae) with a key to Atlantic Stellifer species, pp. 434-466 in Zootaxa 4991 (3) on page 463, DOI: 10.11646/zootaxa.4991.3.2, http://zenodo.org/record/5042387
Magnetic excitation in relativistic heavy ion collisions
Creators: name: Danhoni, I.
name: Navarra, F. S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this note we study the conversion of nucleons into deltas induced by a strong magnetic field in ultraperipheral relativistic heavy ion collisions. The interaction Hamiltonian couples the magnetic field to the spin operator, which, acting on the spin part of the wave function, converts a spin 1/2 into a spin 3/2 state. We estimate this transition probability and calculate the cross section for delta production. This process can in principle be measured, since the delta moves close to the beam and decays almost exclusively into pions. Forward pions may be detected by forward calorimeters.
description: 5 pages, 2 figures
A Study on Development of Leisure Tourism in Yichang City of Hubei Province
Creators: name: WANG, Hui
name: MA, Jinggui
name: WANG, Hui
name: MA, Jinggui
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Yichang City, Leisure tourism, Development

description: In recent years, leisure tourism in Yichang City of Hubei Province has been developed rapidly and has made great contribution to the economic development of Yichang City. Leisure tourism in Yichang City has entered a golden period of great development, great transformation, great improvement and great leap forward. However, while pursuing the development of tourism industry, it is required to pay attention to the problem of improving its industrial development. This article mainly studied the current situation and existing problems of tourism in Yichang. Finally, it came up with some solutions and suggestions about how to promote the development of leisure tourism in Yichang City.
Influence of Artificial Cofferdam and Spartina alterniflora Expansion on Evolution of Suaeda salsa Marsh in Yancheng Coastal Wetland of East China
Creators: name: HAN, Shuang
name: ZHEN, Yan
name: LI, Yufeng
name: ZHANG, Huabing
name: HAN, Shuang
name: ZHEN, Yan
name: LI, Yufeng
name: ZHANG, Huabing
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Artificial cofferdam, Spartina alterniflora expansion, Temporal and spatial evolution, Suaeda salsa marsh, Yancheng Nature Reserve

description: Suaeda salsa is an important local species in the intertidal beach of the Western Pacific coast. However, under the artificial cofferdam and Spartina alterniflora expansion, Suaeda marsh has degraded seriously. Therefore, using Yancheng Nature Reserve as a case study area, taking ETM+ images in 2000, 2006 and 2011 as the basic data sources, we revealed the evolution characteristics of Salsa marsh which was impacted. The research results are as follows. From 2000 to 2011, Salsa marsh area in the artificial area tempestuously degraded, decreasing by 87.158%, more than 22% than those in the natural area. The landscape was fragmentized. Landscape polymerization degree index dropped from 95.780 to 65.455, more than 16% than those in the natural area. The mean patch area fell down to 21.429 ha from 389.333 ha, more than 11% that in the natural area. Compared to the steady change in natural conditions, the area was reduced by 118.167 ha/a from 2000 to 2006, while during 2006-2011, it was only 51.500 ha/a in artificial area. As for spatial change of landscape, in artificial area, the Salsa marsh centroid moved forward to the southeast with 666.350 m, but that in natural area moved forward to the north with 1042.710 m from 2000 to 2006. From 2006 to 2011, the centroid moved forward to east and north respectively. Artificial cofferdam transformed the area into freshwater ecosystem, and meanwhile the freshwater was beneficial to Reed marsh. During 2000 to 2006, in the artificial area, 539 ha Salsa marsh controlled by cofferdam transferred into reed marsh and aquaculture ponds, of which the transformation rate was nearly 4% higher than that in natural area. From 2006 to 2011, 178 ha Salsa marsh was transferred into reed marsh, the transformation rate was 20% higher than that in natural area. With rapid spreading and strong competition of Spartina species, the coastal wetland has formed the pattern of "Salsa–Spartina marshes". From 2000 to 2006, in artificial area, 15.24% of Salsa marsh was transferred into Spartina marsh, of which the transformation rate was 13% higher than that in natural area. And from 2006 to 2011, 30.07% Salsa marsh was replaced by the Spartina marsh in artificial area, the rate was almost 10% higher than that in the natural area.
A Second Stellar Color Locus: a Bridge from White Dwarfs to M stars
Creators: name: Smolcic, V.
name: Ivezic, Z.
name: Knapp, G. R.
name: Lupton, R. H.
name: Pavlovski, K.
name: Ilijic, S.
name: Schlegel, D.
name: Smith, J. A.
name: McGehee, P. M.
name: Silvestri, N. M.
name: Hawley, S. L.
name: Rockosi, C.
name: Gunn, J. E.
name: Strauss, M. A.
name: Fan, X.
name: Eisenstein, D.
name: Harris, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a locus of stars in the SDSS g-r vs. u-g color-color diagram that connects the colors of white dwarfs and M dwarfs. While its contrast with respect to the main stellar locus is only ~1:2300, this previously unrecognized feature includes 863 stars from the SDSS Data Release 1. The position and shape of the feature are in good agreement with predictions of a simple binary star model that consists of a white dwarf and an M dwarf, with the components' luminosity ratio controlling the position along this binary system locus. SDSS DR1 spectra for 47 of these objects strongly support this model. The absolute magnitude--color distribution inferred for the white dwarf component is in good agreement with the models of Bergeron et al. (1995).
description: submitted to ApJ, 4 pages, 4 color figures
e+e- -> pi+pi-e+e-: a potential background for sigma(e+e- -> pi+pi-) measurement via radiative return method
Creators: name: Czyz, Henryk
name: Nowak, Elzbieta
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A Monte Carlo generator (EKHARA) has been constructed to simulate the reaction e+e- -> pi+pi-e+e- based on initial and final state emission of a e+e- pair from e+e- -> pi+pi- production diagram.A detailed study of the process, as a potential background for sigma(e+e- -> pi+pi-) measurement via radiative return method, is presented for phi- and B- factory energies.
description: Presented by E. Nowak at XXVII International Conference of Theoretical Physics, `Matter To The Deepest', Ustron, 15-21 September 2003, Poland. To appear in Acta Physica Polonica: http://th-www.if.uj.edu.pl/acta
TEXNIKA OLIY TALIM MUASSASALARIDA ISO 9001 SIFAT MENEJMENTI TIZIMINI JORIY QILISH ORQALI TA'LIM SIFATINI OSHIRISH
Creators: name: Hamdamov, Yusufjon
Publisher: name: Zenodo
Year: 2025

description: Ma'lumki, ta'lim jamiyat rivojlanishida muhim rol o‘ynaydi. Qanday sohada bo‘lmasin, yuqori bilimga ega mutaxassislar, ilmiy-tadqiqot ishlanmalari bilan shug‘ullanish, yangi mahsulot turlarini yaratish va texnologiyalarni rivojlantirish imkoniyatiga ega bo‘ladilar. Jahondagi globallashuv jarayonlari va kompaniyalar o‘rtasidagi mavjud chuqur raqobat muhiti mutaxassislarni ham favqulodda shunga tayyor bo‘lishlarini talab etadi. Ular nafaqat o‘z g‘oyalarini rivojlantirish va yaratilgan nazariy modellarini amalda joriy etish uchun qulay sharoitlarni ta'minlaydilar, shu bilan birga, iqtisodiyotning innovatsion rivojlanishi uchun ham muhim intellektual omil hisoblanadilar.
The discriminant power of biometrics for sex determination in European Bee-eaters Merops apiaster
Creators: name: Costa, Joana S.
name: Hahn, Steffen
name: Rocha, Afonso D.
name: Araújo, Pedro M.
name: Olano-Marín, Juanita
name: Emmenegger, Tamara
name: Alves, José A.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Capsule A combination of several biometric measures enables the reliable sexing of the European Bee-eater Merops apiaster, a species with subtle sex differences in plumage and morphometry. Aims To explore variation in biometrics and their suitability to discriminate sex in adult European Bee-eaters Merops apiaster. Methods We sampled populations of a long-distance migratory species with low sexual size dimorphism, the European Bee-eater Merops apiaster, from colonies in western Iberia (Portugal) and Central Europe (Germany) to investigate body size variation and derive population-specific and general sex discriminant functions. Results Overall, male Bee-eaters were larger than females while Bee-eaters from Germany and Portugal did not differ in size, except for primary length and tail length. The best single measurement to discriminate sex was wing length for Portuguese birds and tail tip length for German birds, as in the combined dataset. Multivariate discriminant functions of head-bill, wing and tail tip lengths provided the highest discriminant accuracy, discriminating sex for 91% of the birds from Portugal, 96% from Germany and 94% when using the combined dataset. Nonetheless, the discriminant accuracy remained high in the functions using only two variables for Portugal (head-bill and tail tip 91%, head-bill and wing 88%, wing and tail tip 88%), Germany (head-bill and tail tip 95%, wing and tail tip 97%) and in the combined dataset (head-bill and tail tip 92%, wing and tail tip 93%). Conclusions Population specific discriminant functions allow sexing of European Bee-eaters by morphometry with high degree of accuracy at least for Iberia and Central European populations. Such discriminant functions can be used to assign the sex of adult Bee-eaters reliably and swiftly while the bird is still in the hand, highlighting the potential of these functions for rapidly sexing species with low degrees of sexual size and plumage dimorphism.
The role of the chiral phase transition in modelling the kaon to pion ratio
Creators: name: Friesen, A. V.
name: Kalinovsky, Yu. L.
name: Toneev, V. D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A sharp peak in the $K^+/π^+$ ratio in relativistic heavy-ion collision is discussed in the framework of the SU(3) Polyakov-loop extended NJL model with vector interaction. In the model, the $K^+/π^+$ ratio was calculated along the chiral phase transition line for different values of the vector coupling $g_V$. We showed that the value of the vector coupling had no significant effect on the $K^+/π^+$ behaviour.
description: 6 pages, 3 figs
Encouraging a more enterprising researcher the implementation of an integrated training programme of enterprise for Ph D and postdoctoral researchers
Creators: name: Phillips, Robert
Publisher: name: figshare
Year: 2020
Subjects: subject: 150304 Entrepreneurship
subject: FOS: Economics and business

description: There are an increasing number of university courses throughout the UK and worldwide which deal with enterprise and innovation, including both undergraduate and masters programmes, not just for business school students, but also as modules as part of many other subject areas. However, there is little in the way of integrated enterprise training for postgraduate and postdoctoral researchers outside of business school programmes. Many of these researchers are likely to need this training in the future if they obtain employment in commercial or non‐profit organisations, or remain in academia as researchers where they may find spin‐out ventures. This paper describes a strategy used to assess the enterprise training needs of researchers using primary and secondary data and trying to cater for these needs within the framework of an academic research setting by creating an integrated enterprise training …
Simulations Show that Vortex Flows could Heat the Chromosphere in Solar Plage
Creators: name: Yadav, Nitin
name: Cameron, R. H.
name: Solanki, S. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The relationship between vortex flows at different spatial scales and their contribution to the energy balance in the chromosphere is not yet fully understood. We perform three-dimensional (3D) radiation-magnetohydrodynamic (MHD) simulations of a unipolar solar plage region at a spatial resolution of 10 km using the MURaM code. We use the swirling-strength criterion that mainly detects the smallest vortices present in the simulation data. We additionally degrade our simulation data to smooth-out the smaller vortices, so that also the vortices at larger spatial scales can be detected. Vortex flows at various spatial scales are found in our simulation data for different effective spatial resolutions. We conclude that the observed large vortices are likely clusters of much smaller ones that are not yet resolved by observations. We show that the vertical Poynting flux decreases rapidly with reduced effective spatial resolutions and is predominantly carried by the horizontal plasma motions rather than vertical flows. Since the small-scale horizontal motions or the smaller vortices carry most of the energy, the energy transported by vortices deduced from low resolution data is grossly underestimated. In full resolution simulation data, the Poynting flux contribution due to vortices is more than adequate to compensate for the radiative losses in plage, indicating their importance for chromospheric heating.
description: 8 pages, 5 figures, accepted in ApJL
Knot polynomials of open and closed curves
Creators: name: Panagiotou, Eleni
name: Kauffman, Louis H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: General Topology (math.GN)
subject: FOS: Mathematics

description: In this manuscript we introduce a method to measure entanglement of curves in 3-space that extends the notion of knot and link polynomials to open curves. We define the bracket polynomial of curves in 3-space and show that it has real coefficients and is a continuous function of the chain coordinates. This is used to define the Jones polynomial in a way that it is applicable to both open and closed curves in 3-space. For open curves, it has real coefficients and it is a continuous function of the chain coordinates and as the endpoints of the curve tend to coincide, the Jones polynomial of the open curve tends to that of the resulting knot. For closed curves, it is a topological invariant, as the classical Jones polynomial. We show how these measures attain a simpler expression for polygonal chains and provide a finite form for their computation in the case of chains of 3 and 4 edges.
Flux Compactifications on Calabi-Yau Threefolds
Creators: name: Giryavets, Alexander
name: Kachru, Shamit
name: Tripathy, Prasanta K.
name: Trivedi, Sandip P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The presence of RR and NS three-form fluxes in type IIB string compactification on a Calabi-Yau orientifold gives rise to a nontrivial superpotential W for the dilaton and complex structure moduli. This superpotential is computable in terms of the period integrals of the Calabi-Yau manifold. In this paper, we present explicit examples of both supersymmetric and nonsupersymmetric solutions to the resulting 4d N=1 supersymmetric no-scale supergravity, including some nonsupersymmetric solutions with relatively small values of W. Our examples arise on orientifolds of the hypersurfaces in $WP^{4}_{1,1,1,1,4}$ and $WP^{4}_{1,1,2,2,6}$. They serve as explicit illustrations of several of the ingredients which have played a role in the recent proposals for constructing de Sitter vacua of string theory.
description: 30 pages, harvmac big; refs and minor comments added
Investigation of Habitats and Causes of Population Decline of Euonymus sanguineus in Tibet
Creators: name: WANG, Kuang
name: AN, Junli
name: GAO, Yi
name: XING, Zhen
name: ZHENG, Weilie
name: WANG, Kuang
name: AN, Junli
name: GAO, Yi
name: XING, Zhen
name: ZHENG, Weilie
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Euonymus sanguineus, Habitat, Population decline

description: Tibet is one of the core distribution areas of the Chinese endemic plant Euonymus sanguineus, but the population decline is obvious. In order to protect and develop the plant resources in Tibet rationally, the ecological environment and growth conditions in Milin County, Nyingchi City, Tibet were investigated by means of sampling method in order to provide the theoretical basis for the protection, introduction, breeding and cultivation of Euonymus sanguineus. The results were as follows: (i) The population quantity of Euonymus sanguineus was too small and the survival area was too small, which seriously affected the interspecific mating, seed development and regeneration, and greatly reduced the genetic diversity within the population; (ii) The dry and hot river valley climate and human and animal activities inhibited the seed germination and seedling growth of Euonymus sanguineus, resulting in very low survival rate of seedlings, and hindering the population expansion of Euonymus sanguineus; (iii) The distribution area is located in the Yarlung Tsangpo river valley, and the natural habitat fragmentation has affected the interspecific gene exchange, resulting in the low seed bearing capacity and germination rate of Euonymus sanguineus, which is the direct cause of the population decline of Euonymus sanguineus; (iv) The litterfall of Euonymus sanguineus had autotoxicity, which inhibited the growth of seedlings under the forest, caused slow natural regeneration of the population, and then caused the population of Euonymus sanguineus to be unable to spread and develop.
Trees, permutations and the tangent function
Creators: name: Street, Ross
Publisher: name: arXiv
Year: 2003
Subjects: subject: History and Overview (math.HO)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 41A58

description: This is a report on a talk to high school mathematics students. It gives some combinatorial connections for the entries of the boustrophedon triangle whose sides are the Taylor coefficients for the tangent and secant functions.
description: 9 pages, pdf file of MacWrite document
Entomobryinae Schaffer 1896
Creators: name: Pan, Zhi-Xiang
name: Ma, Yi-Tong
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Entognatha
Collembola
Entomobryidae

description: Subfamily Entomobryinae Schäffer, 1896   Genus Homidia Börner, 1906
description: Published as part of Pan, Zhi-Xiang & Ma, Yi-Tong, 2021, Two new species of Homidia (Collembola: Entomobryidae) from Eastern China, pp. 179-194 in Zootaxa 4995 (1) on page 180, DOI: 10.11646/zootaxa.4995.1.11, http://zenodo.org/record/5043515
Color-Induced Displacement double stars in SDSS
Creators: name: Pourbaix, D.
name: Ivezic, Z.
name: Knapp, G. R.
name: Gunn, J. E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the first successful application of the astrometric color-induced displacement technique (CID, the displacement of the photocenter between different bandpasses due to a varying contribution of differently colored components to the total light), originally proposed by Wielen (1996) for discovering unresolved binary stars. Using the Sloan Digital Sky Survey (SDSS) Data Release 1 with 2.5 million stars brighter than 21m in the u and g bands, we select 419 candidate binary stars with CID greater than 0.5 arcsec. The SDSS colors of the majority of these candidates are consistent with binary systems including a white dwarf and any main sequence star with spectral type later than ~K7. The astrometric CID method discussed here is complementary to the photometric selection of binary stars in SDSS discussed by Smolcic et al. (2004), but there is considerable overlap (15%) between the two samples of selected candidates. This overlap testifies both to the physical soundness of both methods, as well as to the astrometric and photometric quality of SDSS data.
description: submitted to A&A, 13 pages, 6 figures
G-type antiferromagnetism and orbital ordering due to the crystal field from the rare-earth ions induced by the GdFeO_3-type distortion in RTiO_3 with R=La, Pr, Nd and Sm
Creators: name: Mochizuki, Masahito
name: Imada, Masatoshi
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The origin of the antiferromagnetic order and puzzling properties of LaTiO_3 as well as the magnetic phase diagram of the perovskite titanates are studied theoretically. We show that in LaTiO_3, the t_{2g} degeneracy is eventually lifted by the La cations in the GdFeO_3-type structure, which generates a crystal field with nearly trigonal symmetry. This allows the description of the low-energy structure of LaTiO_3 by a single-band Hubbard model as a good starting point. The lowest-orbital occupation in this crystal field stabilizes the AFM(G) state, and well explains the spin-wave spectrum of LaTiO_3 obtained by the neutron scattering experiment. The orbital-spin structures for RTiO_3 with R=Pr, Nd and Sm are also accounted for by the same mechanism. We point out that through generating the R crystal field, the GdFeO_3-type distortion has a universal relevance in determining the orbital-spin structure of the perovskite compounds in competition with the Jahn-Teller mechanism, which has been overlooked in the literature. Since the GdFeO_3-type distortion is a universal phenomenon as is seen in a large number of perovskite compounds, this mechanism may also play important roles in other compounds of this type.
description: 20 pages, 15 figures
A Study of the effectiveness of a residential Enterprise School for PhD and postdoctoral researchers in North West England for stimulating entrepreneurship
Creators: name: Phillips, Robert
Publisher: name: figshare
Year: 2020
Subjects: subject: 150304 Entrepreneurship
subject: FOS: Economics and business

description: Proceedings of the Institute of Small Business and Entrepreneurship Conference (2013) Cardiff, UK
Temperature and Disorder Chaos in Low Dimensional Directed Paths
Creators: name: da Silveira, Rava A.
name: Bouchaud, Jean-Philippe
Publisher: name: arXiv
Year: 2003
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The responses of a $1+ε$ dimensional directed path to temperature and to potential variations are calculated exactly, and are governed by the same scaling form. The short scale decorrelation (strong correlation regime) leads to the overlap length predicted by heuristic approaches; its temperature dependence and large absolute value agree with scaling and numerical observations. Beyond the overlap length (weak correlation regime), the correlation decays algebraically. A clear physical mechanism explains the behavior in each case: the initial decorrelation is due to `fragile droplets,' which contribute to the entropy fluctuations as $\sqrt{T}$, while the residual correlation results from accidental intersections of otherwise uncorrelated configurations.
description: four pages, revtex4; minor modifications in the text and typos corrected
Burcini Gorochov 1986
Creators: name: Hugel, Sylvain
name: Desutter-Grandcolas, Laure
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Trigonidiidae

description: Threats to Burcini  Narrow habitat. The habitat of Burcini in South Western Indian Ocean islands, and probably elsewhere, corresponds exclusively to intertidal areas, on the shore or on caves connected to the sea; in New Caledonia these have also been observed along rivers near the sea (LDG, unpublished observations). Although populations of these species can reach very high densities, their very habitat is small, mostly linear, corresponding to a very narrow stripe on the shore. Therefore, tools used to assess threat to these species according to their Extent of Occurrence (EOO) or Area of Occupancy (AOO) (IUCN, 2013) appear poorly adapted.
Siltation. Some of SWIO islands shores tend to silt up with mud as a consequence of deforestation and / or intensive farming practices. Burcini in SWIO seem absent from mudded areas and may therefore be indirectly threatened by deforestation (mostly in Comoros) and intensive farming (mostly Mauritius).
Sea level rise. Sea-level rise associated with global warming is a direct threat to these species. Since beachesbacks to be submerged in the next decades are usually artificialized, a shift to equivalent habitats at higher elevation may not be possible. Nevertheless, in a few cases, riverbanks with pebbles might allow a shift to higher elevation.
Modification of beaches for tourism. In SWIO, Burcini do not occur on beaches where all but sand is removed. Removal of pebbles, driftwood and algae from sand beaches makes them unsuitable for Burcini. This tendency to force the shore to fit “postcard expectations of tourists is mostly an issue in Mauritius where regulations may be needed.
 Pollution. The population of Makalapobius aigrettensis n. gen. n. sp. appears to have been directly impacted by the ecological disaster caused in August 2020 by the oil slick following the sinking of the tanker Wakashio. Due to their narrow habitat in the intertidal area, sea water pollution should be considered as a major threat to Burcini.
description: Published as part of Hugel, Sylvain & Desutter-Grandcolas, Laure, 2021, New intertidal crickets from Comoros and Mascarene islands (Orthoptera Trigonidiidae: Nemobiinae: Burcini), pp. 1-26 in Zootaxa 4995 (1) on page 24, DOI: 10.11646/zootaxa.4995.1.1, http://zenodo.org/record/5043469
Relationships between activities of daily living capabilities, family support, and quality of life and mental health in the elderly in Laplae District, Uttaradit Province
Creators: name: Tanyarat Jeenheng
name: Siriluck Suppapitiporn
Publisher: name: Faculty of Medicine Chulalongkorn University
Year: 2022
Subjects: Activities of daily living capabilities
family support
quality of life
mental health
elderly

description: Chulalongkorn Medical Journal, 66, 1, 107-113
Relating an Entrepreneur's Background to the Type of Proposed Innovation in VCs' Investment Decisions
Creators: name: Phillips, Robert
Publisher: name: figshare
Year: 2020
Subjects: subject: 150304 Entrepreneurship
subject: FOS: Economics and business
subject: 150201 Finance

description: This paper aims to explore the various aspects of entrepreneurs' background required for successful ventures that reflect different types of innovation in the view of Venture Capitalists (VCs). The classification of the types of innovation was based on Abernathy and Clarks'(1985) transilience map. The qualitative data was collected by way of semi-structured interviews with four experienced VCs, each as a single unit of a multiple-case study method. The analysis revealed that the most relevant factors of entrepreneurs' background-the level and nature of formal education; entrepreneurial experience in terms of having business skills; and industry-specific experience of technical function-are not equally important for ventures with different modes of innovation. The findings suggested that the level of formal education is less important for the nichecreation innovation, but for ventures of architectural and revolutionary …
Contact loci in arc spaces
Creators: name: Ein, Lawrence
name: Lazarsfeld, Robert
name: Mustata, Mircea
Publisher: name: arXiv
Year: 2003
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14B05 (primary); 14E15, 14E30 (secondary)

description: We study loci of arcs on a smooth variety defined by order of contact with a fixed subscheme. Specifically, we establish a Nash-type correspondence showing that the irreducible components of these loci arise from (intersections of) exceptional divisors in a resolution of singularities. We show also that these loci account for all the valuations determined by irreducible cylinders in the arc space. Along the way, we recover in an elementary fashion-without using motivic integration-results of the third author relating singularities to arc spaces. Moreover, we extend these results to give a jet-theoretic interpretation of multiplier ideals.
description: 18 pages; v.2: minor changes; final version, to appear in Compositio Math
The Godbillon-Vey Invariant as a Restricted Casimir of Three-dimensional Ideal Fluids
Creators: name: Machon, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We show the Godbillon-Vey invariant arises as a `restricted Casimir' invariant for three-dimensional ideal fluids associated to a foliation. We compare to a finite-dimensional system, the rattleback, where analogous phenomena occur.
description: 8 pages
Efficacy of Networks for Entrepreneurs Raising Finance: A Qualitative Analysis
Creators: name: Phillips, Robert
Publisher: name: figshare
Year: 2020
Subjects: subject: 150301 Business Information Management (incl. Records, Knowledge and Information Management, and Intelligence)
subject: FOS: Economics and business
subject: 150304 Entrepreneurship
subject: 150201 Finance

description: This research provides a qualitative analysis of the efficacy of networks for entrepreneurs raising finance in the UK. The authors conducted interviews with eight entrepreneurs in North West England based on the three core components of entrepreneurial networks suggested by Hoang and Antoncic (2003)-contents, governance, and structure. It was found that, on the one hand, the importance of networks for entrepreneurs is widely acknowledged and entrepreneurs have a strong desire to get finance from investors with the help of entrepreneurial networks, while on the other hand, getting finance from networks is still dependent on'luck'and it is quite hard to impress investors and gain funds from the network. The paper proposes a hypothesis for treating entrepreneurial networks as a kind of market for financing, and suggests constructive ways in which entrepreneurs can use networks to raise finance; and it also …