cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Growing up in a wheelchair : a qualitative study of adolescents and young adults with congenital physical disabilities
Creators: name: Radford, Morgan Janice
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study was to explore and describe the experience of growing up with a congenital physical disability and the effect this has on self-concept development from the perspective of adolescents and young adults who have such a disability which confines them to a wheelchair. A phenomenological approach was used to guide data collection through a series of 13 semi-structured interviews with 6 wheelchair dependent individuals between the ages of 12 and 23 years. Data analysis occurred concurrently with data collection. It was found that there were three common components to the experience: family life, peer relationships and leisure-time activities but participants had two different perspectives on this experience. Those holding the "able" perspective were optimistic, generally satisfied with their peer and family relationships and perceived themselves to be physically, socially and cognitively competent. Those with the "disabled perspective were pessimistic, unsatisfied with their peer and family relationships and did not perceive themselves to be physically, socially and cognitively competent. In terms of nursing practice, the findings indicate the necessity of supporting families in order to maintain disabled children and adolescents at home whenever possible and the importance of building positive self-concepts and high self-esteem in disabled children and adolescents. Implications for nursing research include further exploration and description of the experience of growing up with a congenital physical disability with larger numbers of disabled informants and expansion of the body of knowledge about the impact of the disabled child or adolescent on family functioning and family relationships.
Artificial Neural Networks and Fuzzy Inference Systems for Line Simplification with Extended WEA Metric
Creators: name: Olszewski, Robert
name: Gnat, Miłosz
name: Fiedukowicz, Anna
Publisher: name: Commitee on Geodesy PAS
Year: 2018
Subjects: computational intelligence
generalization of geographic information
line simplification

description: The Geodesy and Cartography is a semi-annually scientific journal
 publishing peer-reviewed articles with original solutions of
 theoretical, experimental or applicable problems in the field of
 geodesy, surveying engineering, cartography and GIS, cadastre and land
 management, photogrammetry, remote sensing and related disciplines.

 The Geodesy and Cartography is published under the umbrella of the
 Committee on Geodesy of the Polish Academy of Sciences (PAS).

  Printed version ISSN 2080-6736, On-line version ISSN
 2300-2581
description: The issue of line simplification is one of the fundamental problems of
 generalisation of geographical information, and the proper
 parameterisation of simplification algorithms is essential for the
 correctness and cartographic quality of the results. The authors of this
 study have attempted to apply computational intelligence methods in
 order to create a cartographic knowledge base that would allow for
 non-standard parameterisation of WEA (Weighted Effective Area)
 simplification algorithm. The aim of the conducted research was to
 obtain two independent methods of non-linear weighting of
 multi-dimensional regression function that determines the “importance”
 of specific points on the line and their comparison to each other. The
 first proposed approach consisted in the preparation of a set of
 cartographically correct examples constituting a basis for teaching a
 neural network, while the other one consisted in defining inference
 rules using fuzzy logic. The obtained results demonstrate that both
 methods have great potential, although the proposed solutions require
 detailed parameterisation taking into account the specificity of
 geometric variety of the source data.
Catalan Traffic and Integrals on the Grassmannians of Lines
Creators: name: Oliveira, Taise Santiago Costa
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14M15;05C35

description: We prove that certain numbers occurring in a problem of paths enumeration, studied by Niederhausen (Catlan Traffic at the Beach, The Electronic Journal of Combinatorics, 9, (2002), 1--17), are top intersection numbers in the cohomology ring of the grassmannians of the lines in the complex projective (n+1)-space.
description: Excerpt from my Ph.D. Thesis; to appear on "Discrete Mathematics"
The Achromatic Interfero Coronagraph
Creators: name: Rabbia, Yves
name: Gay, Jean
name: Rivet, Jean-Pierre
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the Achromatic Interfero Coronagraph, a focal imaging device which aims at rejecting the energy contribution of a point-like source set on-axis, so as to make detectable its angularly-close environment (applicable to stellar environment: circumstellar matter, faint companions, planetary systems, but also conceivably to Active Galatic Nucleii and multiple asteroids). With AIC, starlight rejection is based on destructive interference, which allows exploration of the star's neighbouring at angular resolution better than the diffraction limit of the hosting telescope. Thanks to the focus crossing property of light, rejection is achromatic thus yielding a large spectral bandwidth of work. Descriptions and comments are given regarding the principle, the device itself, the constraints and limitations, and the theoretical performance. Results are presented which demonstrate the close-sensing capability and which show images of a companion obtained in laboratory and 'on the sky' as well. A short pictorial description of alternative AIC concepts, CIAXE and Open-Air CIAXE, currently under study, is given.
Security and Privacy in Online Social Networks
Creators: name: Beznosov, Konstantin
Publisher: name: Zenodo
Year: 2013
Subjects: OSN, Facebook, Security, Privacy, Online Social Network

description: Facebook has more monthly active users than almost any nation in the world. Whether one likes it or not, these users spend about 30 minutes daily browsing, posting, messaging, and otherwise socializing with others via OSNs and other social media. It's not surprising that social media has been taken to use by a wide range of individuals and organizations, from US President Obama who raised $690M in his reelection campaign of 2012, to the activists of Arab Spring in 2011, to numerous (legitimate and no so) organizations promoting their products and services, to law enforcement agencies. With so many different stakeholders, security and privacy in OSNs became an important, intriguing, and controversial subject. This talk will overview current research in OSN security and privacy and discuss, in a language accessible to wide audience, a snapshot of developments and discoveries published in last 5 years.
XMM-Newton unveils the type 2 nature of the BLRG 3C 445
Creators: name: Grandi, P.
name: Guainazzi, M.
name: Cappi, M.
name: Ponti, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an observation of XMM-Newton that unambiguously reveals the ``Seyfert 2'' nature of the Broad Line Radio Galaxy 3C 445. For the first time the soft excess of this source has been resolved. It consists of unobscured scattered continuum flux and emission lines, likely produced in a warm photoionized gas near the pole of an obscuring torus. The presence of circumnuclear (likely stratified) matter is supported by the complex obscuration of the nuclear region. Seventy percent of the nuclear radiation (first component) is indeed obscured by a column density ~4*10^{23} cm^{-2}, and 30 % (second component) is filtered by ~7* 10^{22} cm^{-2}. The first component is nuclear radiation directly observed by transmission through the thicker regions. The second one is of more uncertain nature. If the observer has a deep view into the nucleus but near the edge of the torus, it could be light scattered by the inner wall of the torus and/or by photoionized gas within the Broad Line Region observed through the thinner rim of the circumnuclear matter.
description: MNRAS Letters, in press
Effective Theories with Dark Matter Applications
Creators: name: Bhattacharya, Subhaditya
name: Wudka, Jose
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Standard Model (SM) of particle physics has achieved enormous success in describing the interactions among the known fundamental constituents of nature, yet it fails to describe phenomena for which there is very strong experimental evidence, such as the existence of dark matter, and which point to the existence of new physics not included in that model; beyond its existence, experimental data, however, have not provided clear indications as to the nature of that new physics. The effective field theory (EFT) approach, the subject of this review, is designed for this type of situations; it provides a consistent and unbiased framework within which to study new physics effects whose existence is expected but whose detailed nature is known very imperfectly. We will provide a description of this approach together with a discussion of some of its basic theoretical aspects. We then consider applications to high-energy phenomenology and conclude with a discussion of the application of EFT techniques to the study of dark matter physics and it possible interactions with the SM. In several of the applications we also briefly discuss specific models that are ultraviolet complete and may realize the effects described by the EFT.
description: 67 pages, 17 figures, 7 tables; polished draft with additional references to be published in IJMPD
Geometrical and electronic structures of the (5, 3) single-walled gold nanotube from first-principles calculations
Creators: name: Yang, Xiaoping
name: Dong, Jinming
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The geometrical and electronic structures of the 4 Å diameter perfect and deformed (5, 3) single-walled gold nanotube (SWGT) have been studied based upon the density-functional theory in the local-density approximation (LDA). The calculated relaxed geometries show clearly significant deviations from those of the ideally rolled triangular gold sheet. It is found that the different strains have different effects on the electronic structures and density of states of the SWGTs. And the small shear strain can reduce the binding energy per gold atom of the deformed SWGT, which is consistent with the experimentally observed result. Finally, we found the finite SWGT can show the metal-semiconductor transition.
description: 11 pages, 4 figures
Towards Improving the Usability and Security of Web Single Sign-On Systems
Creators: name: Sun, San-Tsai
Publisher: name: Zenodo
Year: 2013
Subjects: issnet
Web Single Sign-On
OpenID
OAuth
Usable Security
Authentication
Security Analysis

description: OpenID and OAuth are open and lightweight web single sign-on (SSO) protocols that have been adopted by high-profile identity providers (IdPs), such as Facebook, Google, Microsoft, and Yahoo, and millions of relying party (RP) websites. However, the average users' perceptions of web SSO and the systems' security guarantees are still poorly understood. Aimed at filling these knowledge gaps, we conducted several studies to further the understanding and improvements of the usability and security of these two mainstream web SSO solutions. First, through several in-lab user studies, we investigated users' perceptions and concerns when using web SSO for authentication. We found that our participants had several misconceptions and concerns that impeded their adoption. This ranged from their inadequate mental models of web SSO, to their concerns about personal data exposure, and a reduction in their perceived web SSO value due to the employment of password management practices. Informed by our findings, we offered a web SSO technology acceptance model, and suggested design improvements. Second, we performed a systematic analysis of the OpenID 2.0 protocol using both formal model checking and an empirical evaluation of 132 popular RP websites. The formal analysis identified three weaknesses in the protocol, and based on the attack traces from the model checking engine, six exploits and a semiautomated vulnerability assessment tool were designed to evaluate how prevalent those weaknesses are in the real-world implementations. Two practical countermeasures were proposed and evaluated to strengthen the uncovered weaknesses in the protocol. Third, we examined the OAuth 2.0 implementations of three major IdPs and 96 popular  RP websites. By analyzing browser-relayed messages during SSO, our study uncovered several vulnerabilities that allow an attacker to gain unauthorized access to the victim user's profile and social graph on IdPs, and impersonate the victim on RP websites. We investigated the fundamental causes of these vulnerabilities, and proposed several simple and practical design improvements that can be adopted gradually by individual sites. In addition, we proposed and evaluated an approach for websites to prevent SQL injection attacks, and a user-centric access-control scheme that leverages the OpenID and OAuth protocols.
Fundamental-measure density functional for the fluid of aligned hard hexagons: New insights in fundamental measure theory
Creators: name: Capitan, Jose A.
name: Cuesta, Jose A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this article we obtain a fundamental measure functional for the model of aligned hard hexagons in the plane. Our aim is not just to provide a functional for a new, admittedly academic, model, but to investigate the structure of fundamental measure theory. A model of aligned hard hexagons has similarities with the hard disk model. Both share "lost cases", i.e. admit configurations of three particles in which there is pairwise overlap but not triple overlap. These configurations are known to be problematic for fundamental measure functionals, which are not able to capture their contribution correctly. This failure lies in the inability of these functionals to yield a correct low density limit of the third order direct correlation function. Here we derive the functional by projecting aligned hard cubes on the plane x+y+z=0. The correct dimensional crossover behavior of these functionals permits us to follow this strategy. The functional of aligned hard cubes, however, does not have lost cases, so neither had the resulting functional for aligned hard hexagons. The latter exhibits, in fact, a peculiar structure as compared to the one for hard disks. It depends on a uniparametric family of weighted densities through a new term not appearing in the functional for hard disks. Apart from studying the freezing of this system, we discuss the implications of the functional structure for new developments of fundamental measure theory.
description: 10 pages, 9 figures, uses RevTeX4
Calculation and justification of land tax and rent for the land used for the parking of vehicles on public lands
Creators: name: Sidorenko, Viktor
name: Malashevskyi, Mykola
name: Kuzin, Nataliia
name: Palamar Alena
name: Malanchuk Mariia
Publisher: name: Commitee on Geodesy PAS
Year: 2018
Subjects: parking
normative monetary evaluation
public land
taxation

description: The Geodesy and Cartography is a semi-annually scientific journal
 publishing peer-reviewed articles with original solutions of
 theoretical, experimental or applicable problems in the field of
 geodesy, surveying engineering, cartography and GIS, cadastre and land
 management, photogrammetry, remote sensing and related disciplines.

 The Geodesy and Cartography is published under the umbrella of the
 Committee on Geodesy of the Polish Academy of Sciences (PAS).

  Printed version ISSN 2080-6736, On-line version ISSN
 2300-2581
description: Activities related to parking of transport, today have become widespread. While parking taxes for vehicles are one of the most important sources of local budgets in countries
with established traditions of local government. The tax for parking spaces for vehicles is a relatively new collection in the tax system of Ukraine, which is due to the recent reform
in tax legislation. Therefore, the scientific coverage of this subject is currently insufficiently
investigated. In the article typical permissive documents are considered when decorating
parking lots, and dependence that contradicts the current land legislation affects local revenues
to the budget is established. The discrepancy between the general approaches of payment
for land is established. For comparison, the approach of parking taxation, for which
there is no land management documentation, and the main reason is the permission from
the public enterprise for the maintenance of green spaces is considered. The analysis of the
current state of the transport scheme of the city shows that in conditions of growth of elaborate
road schemes and with insufficient rates of increase in its capacity to contain traffic
growth it is advisable to increase the carrying capacity of transport lines and the development
of mass passenger transport in cities with a planned increase in average capacity of
rolling stock. Also, using traffic management is necessary to ensure that special conditions
for the passage of the public transport network.
Modified atmosphere packaging of pink prawn (Pandalus platyceros)
Creators: name: Dheeragool, Panadda
Publisher: name: University of British Columbia
Year: 2010

description: Pandalus platyceros (pink prawn or spot shrimp) was stored under (1) aerobic control (bags left open to air), (2) carbon dioxide (CMAP), and (3) nitrogen atmospheres (NMAP) at 1°C. Facultative anaerobes were the majority of psychrotrophic bacteria which contaminated the prawns in this study. Tissue pH of the CMAP prawns was the lowest of all prawns and brought about the greatest exudat ion of the muscle tissue. The microorganisms were markedly inhibited under the CMAP and were slightly inhibited under the NMAP. Consequently, formation of salt-soluble proteins, water-soluble proteins, TMA, and TVB progressed most slowly in the CMAP prawns. TMA production was favored under the NMAP. No ATP was detected in the prawns at the time of packaging. ADP degradation was accelerated under the CMAP but delayed under the NMAP. AMP degraded most rapidly in the control prawns followed by the NMAP and the CMAP prawns respectively. No effect of storage atmospheres was found on IMP, inosine, and hypoxanthine decompositions. Development of K-value in prawns was most strongly influenced by IMP decomposition rate and was slower under the CMAP than under the NMAP. Redness of prawn colour (Hunter a value) was maintained under the NMAP and the CMAP. But carbon dioxide in the CMAP and the NMAP likely caused destruction of the pigments during storage resulting in lighter colour of the stored prawns (Hunter L value). Shelf-life of the pink prawns was at least doubled under the CMAP system but no shelf-life extension was afforded by the NMAP system. The first principal component of the prawn quality parameter accounted for 59.07% of the data variance. This means the most important quality descriptors of the prawns were all microbiological variables, raw prawn meat odour and colour scores, TMA, cooked prawn meat odour and colour scores, water-soluble protein and overall sensory score. Stepwise discriminant analysis of pH and total aerobic sulphide-producing psychrotrophic bacterial count data of the prawns with TMAN concentration as the grouping variable, resulted in 97.2% correct classification of the prawn samples. Two equations for the canonical variables were obtained. A plot of these two canonical variables will visually indicate the region of prawn quality (good, acceptable, or unacceptable).
Tau anomalous magnetic moment form factor at Super B/Flavor factories
Creators: name: Bernabeu, J.
name: Gonzalez-Sprinberg, G. A.
name: Papavassiliou, J.
name: Vidal, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The proposed high-luminosity B/Flavor factories offer new opportunities for the improved determination of the fundamental physical parameters of standard heavy leptons. Compared to the electron or the muon case, the magnetic properties of the $τ$ lepton are largely unexplored. We show that the electromagnetic properties of the $τ$, and in particular its magnetic form factor, may be measured competitively in these facilities, using unpolarized or polarized electron beams. Various observables of the $τ$'s produced on top of the $Υ$ resonances, such as cross-section and normal polarization for unpolarized electrons or longitudinal and transverse asymmetries for polarized beams, can be combined in order to increase the sensitivity on the magnetic moment form factor. In the case of polarized electrons, we identify a special combination of transverse and longitudinal $τ$ polarizations able to disentangle this anomalous magnetic form factor from both the charge form factor and the interference with the Z-mediating amplitude. For an integrated luminosity of $15 \times 10^{18} b^{-1}$ one could achieve a sensitivity of about $10^{-6}$, which is several orders of magnitude below any other existing high- or low-energy bound on the magnetic moment. Thus one may obtain a QED test of this fundamental quantity to a few % precision.
description: 20 pages, 4 figures
A study of the ferromagnetic transition of $SrRuO_3$ in nanometer thick bilayers with $YBa_2Cu_3O_y$, $La_{1.88}Sr_{0.12}CuO_{4-y}$, Au and Cr: Signature of injected carriers in the pseudogap regime
Creators: name: Aharonovich, G.
name: Koren, G.
name: Polturak, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The hypothesis regarding the existence of uncorrelated pre-formed pairs in the pseudogap regime of superconducting $YBa_2Cu_3O_y$ is tested experimentally using bilayers of $YBa_2Cu_3O_y$ and the itinerant ferromagnet $SrRuO_3$. In our study, we monitor the influence of $YBa_2Cu_3O_y$ on $T_p$, the ferromagnetic ordering temperature of $SrRuO_3$. Here, $T_p$ is the temperature of maximum dM/dT or dR/dT where M and R are the magnetization and resistance of $SrRuO_3$, respectively. We compare the results with similar measurements carried out on bilayers of $La_{1.88}Sr_{0.12}CuO_{4-y}$, $Au$ and $Cr$ with $SrRuO_3$. We find that in bilayers made of underdoped 10 nm $YBa_2Cu_3O_y$/5 nm $SrRuO_3$, the $T_p$ values are shifted to lower temperatures by up to 6-8 K as compared to $T_p\approx 140$ K of the 5 nm thick reference $SrRuO_3$ film. In contrast, in the other type of bilayers, which are not in the pseudogap regime near $T_p$, only a smaller shift of up to $\pm$2 K is observed. These differences are discussed in terms of a proximity effect, where carriers from the $YBa_2Cu_3O_y$ layer are injected into the $SrRuO_3$ layer and vice versa. We suggest that correlated electrons in the pseudogap regime of $YBa_2Cu_3O_y$ are responsible for the observed large $T_p$ shifts.
description: 9 figures
Poisson gauge theory
Creators: name: Kupriyanov, Vladislav G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The Poisson gauge algebra is a semi-classical limit of complete non-commutative gauge algebra. In the present work we formulate the Poisson gauge theory which is a dynamical field theoretical model having the Poisson gauge algebra as a corresponding algebra of gauge symmetries. The proposed model is designed to investigate the semi-classical features of the full non-commutative gauge theory with coordinate dependent non-commutativity $Θ^{ab}(x)$, especially whose with a non-constant rank. We derive the expression for the covariant derivative of matter field. The commutator relation for the covariant derivatives defines the Poisson field strength which is covariant under the Poisson gauge transformations and reproduces the standard $U(1)$ field strength in the commutative limit. We derive the corresponding Bianchi identities. The field equations for the gauge and the matter fields are obtained from the gauge invariant action. We consider different examples of linear in coordinates Poisson structures $Θ^{ab}(x)$, as well as non-linear ones, and obtain explicit expressions for all proposed constructions. Our model is unique up to invertible field redefinitions and coordinate transformations.
description: 25 pages; published version
Subcritical dynamo bifurcation in the Taylor Green flow
Creators: name: Ponty, Yannick
name: Laval, Jean-Phillipe
name: Dubrulle, Berengere
name: Daviaud, François
name: Pinton, Jean-François
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report direct numerical simulations of dynamo generation for flow generated using a Taylor-Green forcing. We find that the bifurcation is subcritical, and show its bifurcation diagram. We connect the associated hysteretic behavior with hydrodynamics changes induced by the action of the Lorentz force. We show the geometry of the dynamo magnetic field and discuss how the dynamo transition can be induced when an external field is applied to the flow.
description: 4 pages
การประเมินการประหยัดพลังงานจากการปรับปรุงกรอบอาคารของบ้านแถวปรับอากาศ
Creators: name: สุดาภรณ์ สุดประเสริฐ
Publisher: name: Thammasat University
Year: 2019
Subjects: แบบจำลองทางพลังงานของอาคาร
ภาระการทำความเย็น
การต้านทานความร้อน
ห้องปรับอากาศ

description: Journal of Architectural/Planning Research and Studies, 16, 1, 83-92
คุณภาพของสภาพแวดล้อมภายในห้องเรียน: คณะสถาปัตยกรรมศาสตร์มหาวิทยาลัยเชียงใหม่
Creators: name: สุมาวลี จินดาพล
Publisher: name: Thammasat University
Year: 2019
Subjects: คุณภาพสภาพแวดล้อมภายในอาคาร
คาร์บอนไดออกไซด์
ห้องเรียน
เชียงใหม่

description: Journal of Architectural/Planning Research and Studies, 16, 1, 93-106
Surface Wave Transmission Line Theory for Single and Many Wire Systems
Creators: name: Schaich, Tobias
name: Molnar, Daniel
name: Rawi, Anas Al
name: Payne, Mike
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Examining cables using many conductor transmission line theory has shed light on the modes supported by various cable types. However, so far the theory disregards the fundamental surface wave mode whose lateral confinement increases with frequency and hence is expected to play an important role in high frequency applications. To address this issue, we propose an extension to the theory which incorporates surface waves on uncoated, cylindrical wires. Crucially, this requires new definitions of the per unit length transmission line parameters which are derived using the single wire surface wave solution. By closely examining a two wire and three wire system, we show that these new parameters can predict surface waves as well as modes found using conventional many conductor transmission line theory. Furthermore, all calculated modes are validated experimentally by diagonalization of a measured channel transfer matrix. Additionally, the theoretically predicted propagation constants for the modes are validated against full numerical simulation for the two wire case and good agreement is observed when proximity effects can be neglected.
description: 22 pages, 5 Figures, data and supplementary material will be made available at a later stage
Hadron spectroscopy from canonical partition functions
Creators: name: Fodor, Z.
name: Szabo, K. K.
name: Toth, B. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A spectroscopic method for staggered fermions based on thermodynamical considerations is proposed. The canonical partition functions corresponding to the different quark number sectors are expressed in the low temperature limit as polynomials of the eigenvalues of the reduced fermion matrix. Taking the zero temperature limit yields the masses of the lowest states. The method is successfully applied to the Goldstone pion and both dynamical and quenched results are presented showing good agreement with that of standard spectroscopy. Though in principle the method can be used to obtain the baryon and dibaryon masses, due to their high computational costs such calculations are practically unreachable.
description: 13 pages, 4 figures. Spelling and grammatical errors are corrected
Capturing the physics of MaNGA galaxies with self-supervised Machine Learning
Creators: name: Sarmiento, Regina
name: Huertas-Company, Marc
name: Knapen, Johan H.
name: Sánchez, Sebastián F.
name: Sánchez, Helena Domínguez
name: Drory, Niv
name: Falcón-Barroso, Jesús
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: As available data sets grow in size and complexity, advanced visualization tools enabling their exploration and analysis become more important. In modern astronomy, integral field spectroscopic galaxy surveys are a clear example of increasing dimensionality and complexity of datasets, which challenge the traditional methods used to extract the physical information they contain. We present the use of a novel self-supervised Machine Learning method to visualize the multi-dimensional information on stellar population and kinematics in the MaNGA survey in a two dimensional plane. Our framework is insensitive to non-physical properties such as the size of integral field unit (IFU) and is therefore able to order galaxies according to their resolved physical properties. Using the extracted representations, we study how galaxies distribute based on their resolved and global physical properties. We show that even when using exclusively information about the internal structure, galaxies naturally cluster into two well-known categories from a purely data driven perspective: rotating main-sequence disks and massive slow rotators, hence confirming distinct assembly channels. Low-mass rotation-dominated quenched galaxies appear only as a third cluster if information about the integrated physical properties is preserved, suggesting a mixture of assembly processes for these galaxies without any particular signature in their internal kinematics that distinguishes them from the two main groups. The framework for data exploration is publicly released with this publication, ready to be used with the MaNGA or other integral field data sets.
description: 17 pages, 9 figures. Accepted for publication in The Astrophysical Journal
Women's perceptions of life after 70 : a phenomenological study
Creators: name: Sloss, Theresa Anne
Publisher: name: University of British Columbia
Year: 2010

description: This study was designed to gain an understanding of how older women perceive their lives. In order to gain this insight the qualitative research methodology of phenomenology was selected. Data collection and analysis occurred concurrently. Data were collected through fifteen unstructured interviews. Eight women whose ages ranged from 75 to 88, and who lived on their own in the community participated in the study. Each transcribed interview was analyzed separately and in relation to the other interviews. Emerging themes were validated and clarified in the second interview. The themes were synthesized and then integrated into the final framework called the cycle of contentment. The cycle of contentment had four phases: having independence and connectedness (sources of contentment), experiencing threats, calling upon resources and redefining independence and connectedness. Contentment was a form of happiness preferred by the women and was characterized by calmness and freedom from uneasiness. Independence and connectedness were identified as the two main sources of contentment. Independence was composed of self-reliance, not having to inconvenience others and of being in control of daily events and personal affairs. Connectedness was equated with a sense of belonging with family and friends and being involved and aware of what was happening in the world. Unfortunately, life over 70 for these women was accompanied by many threats which disrupted their independence and connectedness and thus their contentment. The threats noted in the study were: the death of a spouse, death of friends, health problems and the adverse attitudes and actions of others. In response to the threats the women called upon their resources to counteract the impact of the threats. Two types of resources were noted in the study: external and internal. External resources included finances, family, friends and helpful neighbors. Internal resources included faith, memories, self-confidence, a fighting spirit and personal attributes which were somewhat unique to this stage of their lives. By drawing upon their resources it was possible to move to the next phase of the cycle, that of redefining independence and connectedness. This redefinition occurred in three ways. The women found new ways of experiencing independence and connectedness, they normalized common threats and they reappraised their situations. Once independence and connectedness were redefined, contentment returned. These findings were discussed in relation to relevant literature. The implications for nursing practice, education and research were then identified.
Invariance of the relativistic one-particle distribution function
Creators: name: Debbasch, Fabrice
name: Rivet, Jean-Pierre
name: Van Leeuwen, Willem
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The one-particle distribution function is of importance both in non-relativistic and relativistic statistical physics. In the relativistic framework, Lorentz invariance is possibly its most fundamental property. The present article on the subject is a contrastive one: we review, discuss critically, and, when necessary, complete, the treatments found in the standard literature.
The Startup Jungle
Creators: name: Rumble, Ryan Michael
Publisher: name: Journal of Business Models
Year: 2019

description: The Startup Jungle is a four-dimensional business-modelling tool employed in Masters-level entrepreneurship education and corporate strategy workshops. The tool uses a jungle landscape to metaphorically map out business ecosystems, model new ones, and devise scenarios. This article summarises the tool, its use, and concludes with reflections on its application.
description: Journal of Business Models, Vol 7 No 3 (2019): Special Issue: Teaching Business Models - Part 1
Enhancing Robustness of On-line Learning Models on Highly Noisy Data
Creators: name: Zhao, Zilong
name: Birke, Robert
name: Han, Rui
name: Robu, Bogdan
name: Bouchenak, Sara
name: Mokhtar, Sonia Ben
name: Chen, Lydia Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Classification algorithms have been widely adopted to detect anomalies for various systems, e.g., IoT, cloud and face recognition, under the common assumption that the data source is clean, i.e., features and labels are correctly set. However, data collected from the wild can be unreliable due to careless annotations or malicious data transformation for incorrect anomaly detection. In this paper, we extend a two-layer on-line data selection framework: Robust Anomaly Detector (RAD) with a newly designed ensemble prediction where both layers contribute to the final anomaly detection decision. To adapt to the on-line nature of anomaly detection, we consider additional features of conflicting opinions of classifiers, repetitive cleaning, and oracle knowledge. We on-line learn from incoming data streams and continuously cleanse the data, so as to adapt to the increasing learning capacity from the larger accumulated data set. Moreover, we explore the concept of oracle learning that provides additional information of true labels for difficult data points. We specifically focus on three use cases, (i) detecting 10 classes of IoT attacks, (ii) predicting 4 classes of task failures of big data jobs, and (iii) recognising 100 celebrities faces. Our evaluation results show that RAD can robustly improve the accuracy of anomaly detection, to reach up to 98.95% for IoT device attacks (i.e., +7%), up to 85.03% for cloud task failures (i.e., +14%) under 40% label noise, and for its extension, it can reach up to 77.51% for face recognition (i.e., +39%) under 30% label noise. The proposed RAD and its extensions are general and can be applied to different anomaly detection algorithms.
description: Published in IEEE Transactions on Dependable and Secure Computing. arXiv admin note: substantial text overlap with arXiv:1911.04383
Using a GEOBIA framework for integrating different data sources and classification methods in context of land use/land cover mapping
Creators: name: Osmólska, Anna
name: Hawryło, Paweł
Publisher: name: Commitee on Geodesy PAS
Year: 2018
Subjects: data fusion
supervised classification
Sentinel-2
random forest

description: The Geodesy and Cartography is a semi-annually scientific journal
 publishing peer-reviewed articles with original solutions of
 theoretical, experimental or applicable problems in the field of
 geodesy, surveying engineering, cartography and GIS, cadastre and land
 management, photogrammetry, remote sensing and related disciplines.

 The Geodesy and Cartography is published under the umbrella of the
 Committee on Geodesy of the Polish Academy of Sciences (PAS).

  Printed version ISSN 2080-6736, On-line version ISSN
 2300-2581
description: Land use/land cover (LULC) maps are important datasets in various environmental projects. Our aim was to demonstrate how GEOBIA framework can be used for integrating
different data sources and classification methods in context of LULC mapping.We presented multi-stage semi-automated GEOBIA classification workflow created for LULC
mapping of Tuszyma Forestry Management area based on multi-source, multi-temporal and multi-resolution input data, such as 4 bands- aerial orthophoto, LiDAR-derived nDSM,
Sentinel-2 multispectral satellite images and ancillary vector data. Various classification methods were applied, i.e. rule-based and Random Forest supervised classification. This
approach allowed us to focus on classification of each class ‘individually’ by taking advantage from all useful information from various input data, expert knowledge, and advanced
machine-learning tools. In the first step, twelve classes were assigned in two-steps rule-based classification approach either vector-based, ortho- and vector-based or orthoand
Lidar-based. Then, supervised classification was performed with use of Random Forest algorithm. Three agriculture-related LULC classes with vegetation alternating conditions
were assigned based on aerial orthophoto and Sentinel-2 information. For classification of 15 LULC classes we obtained 81.3% overall accuracy and kappa coefficient of 0.78. The
visual evaluation and class coverage comparison showed that the generated LULC layer differs from the existing land cover maps especially in relative cover of agriculture-related
classes. Generally, the created map can be considered as superior to the existing data in terms of the level of details and correspondence to actual environmental and vegetation
conditions that can be observed in RS images.
Thick lenses systems
Creators: name: Callegari, Fulvio Andres
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The optical matrix formalism is applied to find parameters such as focal distance, back and front focal points, principal planes, and the equation relating object and image distances for a thick spherical lens immerse in air. Then, the formalism is applied to systems compound of two, three and N thick lenses in cascade. It is found that a simple Gaussian equation is enough to relate object and image distances no matter the number of lenses.
description: 20 pages, 14 Figures
Παρασκευή και μελέτη ιδιοτήτων νέων νανομιγμάτων και νανοσύνθετων πολυμερικών υλικών με βάση βιοδιασπώμενους πολυεστέρες των υδροξυκαρβοξυλικών οξέων για βιοϊατρικές εφαρμογές και πιθανή αντικατάσταση:
Creators: name: Παναγιωτίδου, Ελπινίκη Ι.
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Πολυ(3-υδροξυβουτυρικό οξύ)
Νανοσύνθετα υλικά
Βιοαποικοδόμηση
Μείγματα πολυμερών
Poly(3-hydroxybutyrate)
Nanocomposites
Biodegradation
Blends of polymers

description: H παρούσα διατριβή αφορά στην παρασκευή μιγμάτων και νανοσύνθετων υλικών με μήτρα το βιοαποικοδομήσιμο και βιοσυμβατό πολυμερές πολυ(3-υδροξυβουτυρικό οξύ) (PHB) καθώς και τη μελέτη των ιδιοτήτων τους, με απώτερο σκοπό εφαρμογής των υλικών αυτών τόσο στην βιοϊατρική όσο και στη βιομηχανία. Τόσο τα νανοσύνθετα υλικά όσο και τα μίγματα παρασκευάστηκαν με τη μέθοδο ανάμειξης τήγματος, η οποία είναι φιλική προς το περιβάλλον. Αρχικά, πραγματοποιήθηκε η οργανική τροποποίηση του φυσικού νατριούχου μοντμοριλλονίτη. Το οργανικά τροποποιημένο ορυκτό χρησιμοποιήθηκε ως νανοενισχυτικό για την παρασκευή των νανοσύνθετων υλικών. Η οργανική τροποποίηση έγινε μέσω αντίδρασης ιοντοεναλλαγής με άλατα του αλκυλαμμωνίου. Παρασκευάστηκαν υβριδικά υλικά PHB / C18MMT με βαθμό τροποποίησης στο 150% της συνολικής κατιοεναλλακτικής ικανότητας (CEC) του ορυκτού, με περιεκτικότητα 1, 3, 5 και 10% κ.β. σε τροποποιημένο ορυκτό. Για τα υλικά αυτά μελετήθηκαν η δομή τους, η θερμική τους συμπεριφορά, οι μηχανικές τους ιδιότητες, η βιοαποικοδόμηση και η βιοσυμβατότητα τους. Επιπρόσθετα, μείγματα του PHB με το ελαστομερές πολυ(3-υδροξυοκτανοϊκό οξύ) (PHO) παρασκευάστηκαν σε διάφορες περιεκτικότητες (PHB/PHO: 65/35, 60/40, 55/45, 50/50), διερευνήθηκε η αναμιξιμότητα τους και μελετήθηκαν οι θερμομηχανικές τους ιδιότητες.
description: In this dissertation, blends and nanocomposites of the biodegradable and biocompatible polymer poly(3-hydroxybutyrate) (PHB) were produced, and their properties were investigated. The melt mixing method was used for the production of the hybrid materials, nanocomposites and blends. Melt mixing is an environmentally friendly and widely used technique in industry. Organomodified montmorillonite (OMMT) was used as the nanofiller. Hybrid materials of PHB with C18MMT, in quantity equivalent to 1.5 times the Cation Exchange Capacity (CEC) of the clay, were produced in various concentrations (1, 3, 5, and 10 %wt). Their structure was investigated and subsequently their thermal behavior and their mechanical properties were studied. Finally, biodegradation and biocompatibility tests took place for the nanocomposites. Additionally, blends of PHB and the elastomeric poly(3-hydroxyoctanoate) (PHO) were produced with various loadings (PHB/PHO: 65/35, 60/40, 55/45, 50/50). The miscibility of the two polymers was examined and their thermo-mechanical properties were determined.
Thwarting fake accounts by predicting their victims
Creators: name: Boshmaf, Yazan
name: Logothetis, Dionysios
name: Siganos, Georgos
name: Ripeanu, Matei
name: Beznosov, Konstantin
Publisher: name: Zenodo
Year: 2014
Subjects: Social network security
Online social networks
Fake accounts detection
Graph theory
Machine learning

description: Traditional fake account detection systems employed by today's online social networks rely on either features extracted from user activities, or ranks computed from the underlying social graph. We herein present a system that integrates both approaches to deliver a more resilient defense mechanism that is both efficient and effective. We present a two-phase, iterative technique to achieve this integration. First, we leverage the insight that harmful fake accounts connect with other users (i.e., victims) before mounting subsequent attacks. We therefore train a classifier to predict these victims using features extracted from the activities of known, non-fake accounts. Second, we observe that actual victims are located at the borderline between two subgraphs, effectively separating harmful fake accounts from other accounts in the social graph. We take advantage of this observation by using the predicted victims as "deflection points" for a short random walk that starts from a known, non-fake account that is not a victim. By ranking accounts based on their landing probability, we guarantee that most of the fake accounts have a strictly lower rank than non-fake accounts. The results of our experiments show that our technique can help in reducing the number of victims while providing a more robust ranking for fake accounts detection.
Quantum advantage and noise reduction in distributed quantum computing
Creators: name: Avron, J.
name: Casper, Ofer
name: Rozen, Ilan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Distributed quantum computing can give substantial noise reduction due to shallower circuits. An experiment illustrates the advantages in the case of Grover search. This motivates studying the quantum advantage of the distributed version of the Simon and Deutsch-Jozsa algorithm. We show that the distributed Simon algorithm retains the exponential advantage, but the complexity deteriorates from O(n) to O(n^2), where n = log2(N). The distributed Deutsch-Jozsa deteriorates to being probabilistic but retains a quantum advantage over classical random sampling.
description: v3: Changes made according to referees responses while submitting to Physical Review A
Vesicular-arbuscular mycorrhizal fungi in winter wheat in South Coastal British Columbia
Creators: name: Cade, Barbara Jean
Publisher: name: University of British Columbia
Year: 2010

description: This two-part study was conducted to examine the VA mycorrhizae of winter wheat in South Coastal British Columbia. In the first part, colonization patterns at four sites were monitored through the October to August growing season, as were a variety of environmental factors which might influence these patterns. Fall colonization was observed at two sites, which were the most highly colonized at all five harvests. The other two sites were not colonized until late spring, and never attained high levels of infection. Soil phosphorus, soil moisture and plant physiology were shown to exert the strongest influences on these patterns, while temperature was not believed to be an important factor. In the second part of this study, the systemic fungicide Bayleton (triademifon) was shown to be mildly fungistatic when it was sprayed onto the foliage of young plants, and to increase the levels of some foliar elements. The systemic fungicide Tilt (propiconazole) had no effect on colonization or foliar nutrients when it was foliarly applied to older plants. From this study, it is difficult to determine the importance of VA mycorrhizae to wheat in this region. With the more than adequate levels of plant nutrients in the soils at these sites, the mycorrhizae may not be very important nutritionally to the host plants. However, they may provide positive effects on growth which were not apparent from this study.