cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sample size calculations for main effects and interactions in case–control studies using Stata's nchi2 and npnchi2 functions
Creators: name: Saunders, Catherine L.
name: Bishop, D. Timothy
name: Barrett, Jennifer H.
name: Saunders, Catherine L.
name: Bishop, D. Timothy
name: Barrett, Jennifer H.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Research Methods/ Statistical Methods
subject: gene–environment interaction
subject: gene–gene interaction
subject: power
subject: sample size
subject: study design
subject: non-central chi^2

description: The non-central chi-squared distribution can be used to calculate power for tests detecting departure from a null hypothesis. Required sample size can also be calculated because it is proportional to the non-centrality parameter for the distribution. We demonstrate how these calculations can be carried out in Stata using the example of calculating power and sample size for case–control studies of gene–gene and gene–environment interactions. Do-files are available for these calculations.
Implementing tests with correct size in the simultaneous equations model
Creators: name: Moreira, Marcelo J.
name: Poi, Brian P.
name: Moreira, Marcelo J.
name: Poi, Brian P.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Research Methods/ Statistical Methods
subject: instrumental variables
subject: weak instruments
subject: similar tests
subject: score test
subject: Wald test
subject: likelihood-ratio test
subject: confidence regions
subject: 2SLS estimator
subject: LIML estimator

description: In this paper, we propose a fix to the size distortions of tests for structural parameters in the simultaneous equations model by computing critical value functions based on the conditional distribution of test statistics. The conditional tests can then be used to construct informative confidence regions for the structural parameter with correct coverage probability. Commands to implement these tests in Stata are also introduced.
Nemnövekedés: egy új gazdasági paradigma európai fejleményei,
Creators: name: Meszaros, Sandor
name: Meszaros, Sandor
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agricultural and Food Policy
subject: International Development
subject: Political Economy
subject: nemnövekedés
subject: gazdasági paradigma
subject: ökológiai fenntarthatóság
subject: társadalmi igazságosság
subject: degrowth
subject: economic paradigm
subject: ecological sustainability
subject: social justice

description: A nemnövekedés (degrowth) a fejlett országok számára ajánlott új gazdasági paradigma, amely hosszú távon bolygónk ökológiai fenntarthatóságát és az igazságosabb társadalmak kialakítását eredményezheti. A fogalom karrierje Latouche francia közgazdász 2006-os könyvével indult, amelyet két nemzetközi konferencia, négy latin nyelvű országban pedig politikai mozgalom is követett. Jelen cikk szerzője javasolja, hogy – az alulról jövő kezdeményezések mellett – valamelyik fejlett EU-tagállam is vállalja fel e mozgalom támogatását. A hazai agrárszakemberek a témakörön belül elsősorban az ökofalvakkal, az alacsony fogyasztású vidéki életmóddal és a szövetkezeti bankokkal kapcsolatos francia és spanyol kezdeményezéseket hasznosíthatják, amelyeket ők a nemnövekedés gyakorlati kísérleteinek tekintenek. ------------------------------------- Degrowth is a new economic paradigm proposed for developed countries, which may achieve ecological sustainability and better social justice on the long term. The concept started out from a book by French economist Latouche in 2006, followed by two international conferences and political movements in four Latin countries. The author of the paper recommends that - in addition to the grassroots initiatives - one of the advanced EU Member States also undertake to support the movement. Hungarian agricultural professionals could primarily make use of the French and Spanish initiatives concerning eco villages, low-consumption rural lifestyle and cooperative banking, which are seen as practical experiments for degrowth in those countries.
Global Context-Aware Progressive Aggregation Network for Salient Object Detection
Creators: name: Chen, Zuyao
name: Xu, Qianqian
name: Cong, Runmin
name: Huang, Qingming
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Deep convolutional neural networks have achieved competitive performance in salient object detection, in which how to learn effective and comprehensive features plays a critical role. Most of the previous works mainly adopted multiple level feature integration yet ignored the gap between different features. Besides, there also exists a dilution process of high-level features as they passed on the top-down pathway. To remedy these issues, we propose a novel network named GCPANet to effectively integrate low-level appearance features, high-level semantic features, and global context features through some progressive context-aware Feature Interweaved Aggregation (FIA) modules and generate the saliency map in a supervised way. Moreover, a Head Attention (HA) module is used to reduce information redundancy and enhance the top layers features by leveraging the spatial and channel-wise attention, and the Self Refinement (SR) module is utilized to further refine and heighten the input features. Furthermore, we design the Global Context Flow (GCF) module to generate the global context information at different stages, which aims to learn the relationship among different salient regions and alleviate the dilution effect of high-level features. Experimental results on six benchmark datasets demonstrate that the proposed approach outperforms the state-of-the-art methods both quantitatively and qualitatively.
Conservation and entanglement of Hermite-Gaussian modes in parametric down-conversion
Creators: name: Walborn, S. P.
name: Pádua, S.
name: Monken, C. H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the transfer of the angular spectrum of the pump beam to the two-photon state in spontaneous parametric down-conversion enables the generation of entangled Hermite-Gaussian modes. We derive an analytical expression for the two-photon state in terms of these modes and show that there are restrictions on both the parity and order of the down-converted Hermite-Gaussian fields. Using these results, we show that the two-photon state is indeed entangled in Hermite-Gaussian modes. We propose experimental methods of creating maximally-entangled Bell states and non-maximally entangled pure states of first order Hermite-Gaussian modes.
description: 9 pages, 4 figures. Corrections made as per referee comments, references updated. Submitted PRA
Tested Left Mandible, CK302-12381
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Mandible
Artifact Sampling
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a left mandible (CK302-12381) with a large sample removed for testing from the lateral surface.
Chemical studies of anti-inflammatory secondary metabolites from marine sponges
Creators: name: Yang, Lu
Publisher: name: University of British Columbia
Year: 2010

description: SHIP is a 145 kDa SH2-domain-containing inositol 5-phosphatase. It has been proposed that upregulation of SHIP activity with small molecule agonists of SHIP could control inflammation. At the outset of the research there were no known modulators of SHIP activity. A library of marine invertebrate extracts was screened for SHIP activators. A previously described meroterpenoid, pelorol, that represents the first known SHIP activator was isolated from a tropical sponge Dactylospongia elegans (Thiele, 1899). In vitro studies of pelorol have shown that it is able to activate SHIP'S enzyme activity in intact cells and inhibits activation of macrophages, an essential component of the innate and acquired immune response in inflammatory diseases. A total synthesis of pelorol and its analogs was undertaken in order to flesh out the structure activity of this family of anti-inflammatory compounds. One of these analogs, AQX-16A, showed a 3-fold higher activation of SHIP than pelorol at the same molar concentration. It represents a novel class of drugs which activates a physiologically important negative regulator of the PI3K pathway in hemopoietic cells. Stereoselectivity is an important impact factor in drug action. Several stereo- and regio- isomers of pelorol and its analogs have been synthesized to answer the questions of how [Chemical Diagrams] the regiochemistry of the aromatic ring of pelorol affects its activity and whether the stereochemistry of the C-ring is important for the SHIP activating properties of pelorol. Contignasterol was isolated by our group in 1992 from the sponge Petrosia contignata collected in Papua New Guinea. It was the first example of an emerging family of sponge steroids that have a number of unprecedented structural features. Contignasterol was found to inhibit the release of histamine from sensitized rat mast cells stimulated with anti-lge. IZP576-092, an antiasthma drug developed from the contignasterol lead structure, is now in Phase II human clinical trials. The structure of contignasterol was initially solved by interpretation of spectroscopic data. At the time, the absolute configuration of the side chain chiral centers was not determined. A reinvestigation of the structure of contignasterol using a combination of spectroscopic analysis and chemical degradation has now resulted in the determination of the complete absolute configuration of the molecule. [Chemical Diagrams]
title: Proof theory for modal logics : embedding between hypersequent calculi and systems of rules
Creators: name: Pavlovi, Sanja
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Modal Logics
subject: Proof Theory

description: Modal logics extend classical logic with modal operators that enable us to finely qualify the truth of a proposition. Due to their expressiveness and flexibility, they are used in many areas of computer science. Logical calculi are useful tools for investigating computational and meta-logical properties of logics; moreover, when analytic, they are the base to develop automated reasoning tools. In recent years, a plethora of new formalisms has been introduced, yielding proof systems for many logics. The formalisms may vary in their expressive powers, could be more suitable for certain applications, or may reveal different properties of the logic at hand. With a large number of formalisms comes the need to investigate the relationships between them. In particular, it is important to relate their expressive powers, which can be done through embeddings procedures that given a calculus in one formalism produce a calculus for the same logic in another formalism. Embeddings also allow the transfer of some proof-theoretic results thus avoiding duplicate work. We focus on modal logics characterized by frames with simple properties, i.e., properties that can be described by first-order formulae of a restricted form. The starting point of our investigation are analytic hypersequent calculi for these logics, a generalization of sequent calculi operating on finite multisets of sequents. Extending the methods of Ciabattoni and Genco, we provide an embedding between these calculi and sequent calculi extended by systems of rules sets of sequent rules sharing schematic variables that can only be applied in a predetermined order. We restrict the vertical non-locality of systems of rules to at most two unlabelled sequent rules (2-systems). The embedding yields new analytic calculi for the considered logics which can be used to formulate new natural deduction systems. Also, 2-system derivations are made local.
Promoting Urban Mobility_Bus Crutch Support Project.pdf
Creators: name: Rabaioli, Elian Rosa
name: Scheitt, Eric De Oliveira
name: Alves, Gabriel Soares Ledur
name: Giacomin, Alexandre
name: Souza, José De
Publisher: name: figshare
Year: 2020
Subjects: subject: 91001 CAD/CAM Systems
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 90302 Biomechanical Engineering
subject: FOS: Medical engineering

description: The theme of this paper about Assistive Technology intends to reduce the mobility of people that have the amputation of his lower limbs. The project had as main objective the development of support in the field of mechanical engineering for crutches. Bound within the highway buses, to facilitate the movement of people who use crutches, providing support for the crutches, the time when the user stays within the city bus, and with this crutch, users will have greater accessibility to the use the coaches. In this project, the researchers. undertook a visit to Central company to analyze the urban bus models available and chose the model company Mega Neobus to projection and scale of support. It was possible to conclude the assembly of the screening, the responses of the crutches users, and the tensor analysis in the Inventor. The researchers found that the objectives outlined achieved and that support is fully functional.
World Spinors: Group Representations and Field Equations
Creators: name: Sijacki, Djordje
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The questions of the existence, basic algebraic properties and relevant constraints that yield a viable physical interpretation of world spinors are discussed in details. Relations between spinorial wave equations that transform respectively w.r.t. the tangent flat-space (anholonomic) Affine symmetry group and the world generic-curved-space (holonomic) group of Diffeomorphisms are presented. A geometric construction based on an infinite-component generalization of the frame fields (e.g. tetrads) is outlined. The world spinor field equation in 3D is treated in more details.
Spin-1 Particle in the Light-Front Approach
Creators: name: de Melo, J. P. B. C.
name: Frederico, T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The electromagnetic current of spin-1 composite particles does not transform properly under rotations if only the valence contribution is considered in the light-front model. In particular, the plus component of the current, evaluated only for the valence component of the wave function, in the Drell-Yan frame violates rotational symmetry, which does not allow a unique calculation of the electromagnetic form-factors. The prescription suggested by Grach and Kondratyuk [Sov. J. Nucl. Phys. 38, 198 (1984)] to extract the form factors from the plus component of the current, eliminates contributions from pair diagrams or zero modes, which if not evaluated properly cause the violation of the rotational symmetry. We address this problem in an analytical and covariant model of a spin-1 composite particle.
description: To appear Brazilian Journal of Physics (2004), 4 pages, no figures. Use multicols.sty
The statistical physics of discovering exogenous and endogenous factors in a chain of events
Creators: name: Koyama, Shinsuke
name: Shinomoto, Shigeru
Publisher: name: arXiv
Year: 2020
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Event occurrence is not only subject to the environmental changes, but is also facilitated by the events that have occurred in a system. Here, we develop a method for estimating such extrinsic and intrinsic factors from a single series of event-occurrence times. The analysis is performed using a model that combines the inhomogeneous Poisson process and the Hawkes process, which represent exogenous fluctuations and endogenous chain-reaction mechanisms, respectively. The model is fit to a given dataset by minimizing the free energy, for which statistical physics and a path-integral method are utilized. Because the process of event occurrence is stochastic, parameter estimation is inevitably accompanied by errors, and it can ultimately occur that exogenous and endogenous factors cannot be captured even with the best estimator. We obtained four regimes categorized according to whether respective factors are detected. By applying the analytical method to real time series of debate in a social-networking service, we have observed that the estimated exogenous and endogenous factors are close to the first comments and the follow-up comments, respectively. This method is general and applicable to a variety of data, and we have provided an application program, by which anyone can analyze any series of event times.
description: 17 pages, 7 figures
Noncommutative Tachyon Kinks as D$(p-1)$-branes from Unstable D$p$-brane
Creators: name: Banerjee, Rabin
name: Kim, Yoonbai
name: Kwon, O-Kab
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study noncommutative (NC) field theory of a real NC tachyon and NC U(1) gauge field, describing the dynamics of an unstable D$p$-brane. For every given set of diagonal component of open string metric $G_{0}$, NC parameter $θ_{0}$, and interpolating electric field ${\hat E}$, we find all possible static NC kinks as exact solutions, in spite of complicated NC terms, which are classified by an array of NC kink-antikink and topological NC kinks. By computing their tensions and charges, those configurations are identified as an array of D0${\bar {\rm D}}$0 and single stable D0 from the unstable D1, respectively. When the interpolating electric field has critical value as $G_{0}^{2}={\hat E}^{2}$, the obtained topological kink becomes a BPS object with nonzero thickness and is identified as BPS D0 in the fluid of fundamental strings. Particularly in the scaling limit of infinite $θ_{0}$ and vanishing $G_{0}$ and ${\hat E}$, while keeping $G_{0}θ_{0}={\hat E}θ_{0}=1$, finiteness of the tension of NC kink corresponds to tensionless kink in ordinary effective field theory. An extension to stable D$(p-1)$ from unstable D$p$ is straightforward for pure electric cases with parallel NC parameter and interpolating two-form field.
description: 29 pages, references added
Quasiparticle excitations in frustrated antiferromagnets
Creators: name: Trumper, A. E.
name: Gazza, C. J.
name: Manuel, L. O.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have computed the quasiparticle wave function corresponding to a hole injected in a triangular antiferromagnet. We have taken into account multi-magnon contributions within the self consistent Born approximation. We have found qualitative differences, under sign reversal of the integral transfer t, regarding the multi-magnon components and the own existence of the quasiparticle excitations. Such differences are due to the subtle interplay between magnon-assisted and free hopping mechanisms. We conclude that the conventional quasiparticle picture can be broken by geometrical frustration without invoking spin liquid phases.
description: 5 pages, 4 figures, presented at " At the Frontiers of the condensed Matter II, Buenos Aires. June, 2004 ". To be published in Physica B
Stability of hydrodynamical relativistic planar jets. I. Linear evolution and saturation of Kelvin-Helmholtz modes
Creators: name: Perucho, M.
name: Hanasz, M.
name: Marti, J. M.
name: Sol, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The effects of relativistic dynamics and thermodynamics in the development of Kelvin-Helmholtz instabilities in planar, relativistic jets along the early phases (namely linear and saturation phases) of evolution has been studied by a combination of linear stability analysis and high-resolution numerical simulations for the most unstable first reflection modes in the temporal approach. Three different values of the jet Lorentz factor (5, 10 and 20) and a few different values of specific internal energy of the jet matter (from 0.08 to $60.0 c^2$) have been considered. Figures illustrating the evolution of the perturbations are also shown.
description: Paper I, 17 pages. Accepted for publication in Astronomy & Astrophysics. Image size and quality are reduced due to arxiv limits. Better quality images will be available in the published paper or on request to manuel.perucho@uv.es
A gazdálkodók képzettsége és a tanácsadás
Creators: name: Szekely, Erika
name: Szekely, Erika
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Teaching/Communication/Extension/Profession
subject: szakképzettség
subject: szakismeret
subject: szaktanácsadás
subject: kihívások
subject: ismeretátadás
subject: vocational training
subject: advisory services
subject: knowledge transfer
subject: forms of advisory services

description: A magyarországi gazdálkodók az EU 27 tagállama közötti képzettségi rangsorban a 19. helyet foglalják el. Ezért rendkívül fontos a tanácsadás igénybevételének szorgalmazása. A gazdálkodók leginkább a falugazdász hálózat és az alapanyag forgalmazók képviselőivel tartanak kapcsolatot, jórészt az adminisztratív tennivalók miatt. A termelési-technológiai tanácsadást gyakorlatilag az inputanyag-forgalmazók látják el, ami erős konkurenciát jelent a névjegyzéki szaktanácsadásnak. A szaktanácsadási rendszer szereplőinek elsődleges feladata a tanácsadás piaci keresletének bővítése.------------------------------------------------------- By European comparison the professional expertise of Hungarian agricultural producers can be considered poor, although not among the worst in the Community. Among Hungarian farmers practical experience is above the European Union average, while the prevalence of secondary and higher level vocational qualification is around average in the EU-27. The most important challenge for the Hungarian agricultural advisory system is to extend the coverage of the service. According to observations, Hungarian users are only in contact with one section of the agricultural advisory services, while information about other services is insufficient. The users most often know about and keep contact with the village agronomists and support oriented advisory services. Users work with village agronomists to discharge their clerical duties, while suppliers practically cover advisory services concerning production technology. This creates competition for the system of registered advisors and forces them to reassess their goals and duties. The primary task of the participants of the extension system is to boost market demand for their services by increasing the demand on the part of users.
Rotation Effects and The Gravito-Magnetic Approach
Creators: name: Ruggiero, Matteo Luca
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravito-electromagnetism is somewhat ubiquitous in relativity. In fact, there are many situations where the effects of gravitation can be described by formally introducing "gravito-electric" and "gravito-magnetic" fields, starting from the corresponding potentials, in analogy with the electromagnetic theory (see also A. Tartaglia's contribution to these proceedings). The "many faces of gravito-electromagnetism" are related to rotation effects in both approximated and full theory approaches. Here we show that, by using a 1+3 splitting, relativistic dynamics can be described in terms of gravito-electromagnetic (GEM) fields in full theory. On the basis of this formalism, we introduce a "gravito-magnetic Aharonov-Bohm effect", which allows to interpret some rotation effects as gravito-magnetic effects. Finally, we suggest a way for measuring the angular momentum of celestial bodies by studying the gravito-magnetic effects on the propagation of electromagnetic signals.
description: 3 pages, LaTeX, 1 EPS figure; to appear in the Proceedings for the ``XVI SIGRAV Conference'' in Vietri sul Mare (SA) 13-16 September 2004, References Changed, Misprints Corrected
Tube of (Circle F, D0, D2) Bound State in Melvin Background
Creators: name: Huang, Wung-Hong
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By using the Born-Infeld action we show that the $m$ circular fundamental strings, $n$ D2-branes and $k$ D0-branes could become a tubular bound state which is prevented from collapsing by the magnetic force in the Melvin background. However, if the ratio $m/n$ is larger then a critical value the tube will become unstable and collapse to zero radius. We make analyses to find the critical value and tube radius therein. The tube configurations we found are different from the well known tubular bound states of straight fundamental strings, D0 and D2-branes, which are supported by the angular momentum.
description: Latex 9 pages, perform new calculation to correct mistakes and draw new conclusion, title was changed
b kuru.docx
Creators: name: Pandikattu, Kuruvilla
Publisher: name: figshare
Year: 2020
Subjects: subject: 220401 Christian Studies (incl. Biblical Studies and Church History)
subject: FOS: Philosophy, ethics and religion
subject: 220402 Comparative Religious Studies

description:
Inspired by “Intimate Enemy: Loss and Recovery of Self Under Colonialism” (Ashis Nandy), the author wants to reflect on the fact that the other begins with my own self. We are in fact not one monolithic self, but a multiplicity of even contradictory and ambiguous selves. At the postcolonial level, we can speak of the multiple discourses (conflicting and entangled narratives) governing us and so the othering of the other starts with the othering of our own self. For this we take two authors, Arundhati Roy and David Malouf. Drawing from the multiple postcolonial identities, can we still reduce the individual and collective violence – both real and imagined – we inflict on ourselves and others due our imaginary identities, constructed selfhood, derived self-fashioning and amplified differences?
Ultra-sensitive nanometric flat pigment for binocular stereoscopic image
Creators: name: Hu, Dejiao
name: Li, Hao
name: Zhu, Yupeng
name: Lei, Yuqiu
name: Zheng, Jiajin
name: Cao, Yaoyu
name: Guan, Bai-Ou
name: Bi, Lei
name: Li, Xiangping
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Two-dimensional (2D) transition metal dichalcogenides (TMDs) with tantalizing layer-dependent electronic and optical properties have emerged as a new paradigm for integrated flat opto-electronic devices. However, daunting challenges remain in deterministic fabrication of TMD layers with demanded shapes and thicknesses as well as light field manipulation in such atomic-thick layers with vanishingly small thicknesses compared to the wavelength. Here, we demonstrate ultra-sensitive light field manipulation in full visible ranges based on laser exfoliating MoS2 layers with nanometric precisions. The nontrivial interfacial phase shifts stemming from the unique dispersion of MoS2 layers integrated on the metallic substrate empower an ultra-sensitive resonance manipulation up to 12.8 nm per MoS2 layer across the entire visible bands, which is more than five times larger than their counterparts. The interlayer van der Waals interactions endow a laser exfoliation method for on-demand patterning MoS2 with atomic thickness precisions and subwavelength feature sizes in a facile and lithography-free fashion. With this, nanometric flat color prints and further binocular stereoscopic views by multi-perspective diffractive images can be realized. Our results with demonstrated practicality unlock full potentials and pave the way for widespread applications of emerging 2D flat optics.
A Review Of 5G Technology: Architecture, Security and wide Applications
Creators: name: Meer Zafarullah Noohani
name: Magsi, Kaleem Ullah
Publisher: name: figshare
Year: 2020
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: Computer Engineering

description: The eventual goal of the forthcoming 5G wireless networking is to have relatively fast data speeds, incredibly low latency, substantial rises in base station’s efficiency and major changes in expected Quality of Service (QoS) for customers relative to the existing 4G LTE networks. In order to deal with state-of-the art technologies and connectivity in the form of smart cell phones, internet of things (IoT) devices, autonomous vehicles, virtual reality devices and smart homes connectivity, the broadband data use has risen at a fast rate. Further, to meet the latest applications, the bandwidth of the system needs to be increased widely. This development will be accomplished by using a modern spectrum with higher data levels. In particular, the fifth generation (5G) mobile network seeks to resolve the shortcomings of previous telecommunication technologies and to be a possible primary enabler for future IoT applications. This paper briefly discusses the architecture of 5G, following by the security associated with the 5G network, 5G as an energy efficient network, various types of efficient antennas developed for 5G and state-of-the-art specifications for IoT applications along with their related communication technologies. We have also outlined the broader usage of 5G and its future impacts on our lives. Furthermore, at the end of each subtopic, the necessary recommendations are given for the future work.
Gyógynövény-fogyasztási szokások vizsgálata
Creators: name: Panyor, Agota
name: Panyor, Agota
Publisher: name: Unknown
Year: 2011
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: gyógynövények ismertsége
subject: fogyasztási szokások
subject: keresletnövelési lehetőségek
subject: herbal products
subject: consumption of herbs
subject: prevent diseases
subject: marketing activities

description: A gyógynövények reneszánszukat élik, folyamatosan növekszik a gyógynövényekből készült termékek iránti kereslet. Kutatásunkban közvetlen fogyasztói megkérdezések segítségével rávilágítunk a gyógynövényeket használók szokásaira, vásárlásukat befolyásoló tényezőkre. Primer kutatási eredményeink alátámasztják a fogyasztók gyógynövények iránti fokozódó keresletét, de jelzik, hogy rendkívül hiányosak a gyógynövények hatásaival kapcsolatos ismereteik. A megkérdezettek közül a legtöbben teaként fogyasztják a gyógynövényeket, illetve gél vagy krém formában használják. A válaszadók a legnépszerűbb gyógynövényfajok közé sorolták a kamillát, a csalánt és az aloe verát. A vizsgált termékek vásárlásakor a minőséget tartották a legfontosabbnak, majd az árat és a származási helyet. A fogyasztók felé történő kommunikációban fontos annak megvilágítása, hogy a gyógynövények fogyasztásával betegségek kialakulása előzhető meg, sőt sok esetben a már kialakult betegség is kezelhető. A marketingkommunikációs eszközök között a fogyasztók legszélesebb rétegét érintő televíziós társadalmi célú hirdetések, a főbb vásárlóhelyeken tájékoztató kiadványok, szórólapok elhelyezése, valamint állami támogatásokkal és civil szervezetek bevonásával „egészségnapok” szervezése ajánlható. --------------------------------------------- Nowadays we experience a renaissance of herbs and the demand for herbal products is continuously increasing. In our research we conducted direct consumer interviews to shed light on the domestic herb consumption habits and the factors affecting consumer purchases. The key findings of the research confirm the growing consumer demand, but also indicate a very incomplete knowledge of the effects of herbs. Communication directed at the consumers should emphasize that the consumption of herbs can prevent – and often be a treatment for – various diseases. The following marketing communication tools are recommended: public service television commercials, which reach the widest audience; leaflets and brochures distributed at the key points of sale; and the organisation of “Health Days” together with NGOs and governmental aid. Most of the respondents consumed herbs in the form of herbal teas, or used herbal gels and creams. Respondents listed chamomile, nettle and aloe vera as the most popular herbs. When purchasing herbal products, they said they considered quality the most important, followed by price and the place of origin.
Spin symmetry and spin current of helicity eigenstates of the Luttinger Hamiltonian
Creators: name: Wang, Xindong
name: Zhang, X. -G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A general spin symmetry argument is proposed for spin currents in semiconductors. In particular, due to the symmetry with respect to spin polarization of the helicity eigenstates of the Luttinger Hamiltonian for a hole-doped semiconductor, the spin polarized flux from a single helicity eigenstate induced by an external electric field, is canceled exactly when all such contributions from eigenstates that are degenerate in energy are summed. Thus, the net spin current predicted by Murakami et al, Science 301, 1348 (2003), cannot be produced by such a Hamiltonian. Possible symmetry breaking mechanisms which may generate a spin current are discussed.
A Cost-Effective Person-Following System for Assistive Unmanned Vehicles with Deep Learning at the Edge
Creators: name: Boschi, Anna
name: Salvetti, Francesco
name: Mazzia, Vittorio
name: Chiaberge, Marcello
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The vital statistics of the last century highlight a sharp increment of the average age of the world population with a consequent growth of the number of older people. Service robotics applications have the potentiality to provide systems and tools to support the autonomous and self-sufficient older adults in their houses in everyday life, thereby avoiding the task of monitoring them with third parties. In this context, we propose a cost-effective modular solution to detect and follow a person in an indoor, domestic environment. We exploited the latest advancements in deep learning optimization techniques, and we compared different neural network accelerators to provide a robust and flexible person-following system at the edge. Our proposed cost-effective and power-efficient solution is fully-integrable with pre-existing navigation stacks and creates the foundations for the development of fully-autonomous and self-contained service robotics applications.
The study of cavitand-based de novo helical bundle proteins
Creators: name: Seo, Emily Satoko
Publisher: name: University of British Columbia
Year: 2010

description: The template assembly approach for the de novo design of proteins provides a useful tool for studying protein structure and folding. The template employed here is a cavitand, which is a rigid macrocycle used to organize helical bundles, resulting in a structure called a cavitein (derived from cavitand and protein). The linker length between the individual helical peptides and the cavitand has been shown to have a dramatic effect on the structure and properties of the caviteins: this previous work studied a set of caviteins using a sequence designed to link from the hydrophobic/hydrophilic interface of the peptides. Here, a new series of four-helix bundle caviteins was synthesized using a sequence designed to link from the hydrophobic face (AEELLKKLEELLKKG). By changing the attachment point, the linker length requirement was slightly reduced, and in turn, the packing between the helices was improved. The optimal linker for this new sequence was found to be two glycine residues, as this linker resulted in a cavitein with the most native-like characteristics. Molecular dynamics simulations were carried out on the same series of caviteins studied experimentally. The computer modelling results generally agreed with the experimental data in terms of helical content and conformational specificity. These simulation results were used to better comprehend the behaviour of the caviteins in solution. A peptide sequence designed for a four-helix structure (CGGGEELLKKLEELLKKG) was linked onto various-sized [n]cavitands. The four-helix bundle was found to be the most stable and native-like compared to the five- and six-helix bundles, as the design intended, which shows that the same sequence exhibits different native-like properties depending on the number of helices in a bundle. De novo proteins simplify the interactions involved in protein folding by allowing subtle changes in the design to be made. It has been demonstrated that slight modifications in the cavitein design have dramatic effects on their stability and structural properties. With improved understanding of how the different forces interact to influence the overall structure, it should be possible to design more complex caviteins with function.
World Food Production and Biomass Energy Outlook for 2050
Creators: name: Hiroyuki, KAWASHIMA
name: Hiroyuki, KAWASHIMA
Publisher: name: Unknown
Year: 2009
Subjects: Resource /Energy Economics and Policy

description: This report tried to locate world food production in world history. The situation in which the food production found itself changed greatly in the 20th century. Food production in the world increased in the latter half of the 20th century. Not only grain production but also meat production increased. Industrially fixed nitrogen fertilizer contributed to this increase. The agricultural population has begun to decrease because it has come to be able to produce food easily. The agricultural population has decreased especially in the advanced countries. The ratio of the population of farmers in advanced countries has decreased to about 2%. Moreover, the proportion of agricultural production in the GDP has decreased, too. Grain prices have been sluggish in the past 20 years. They began to rise in 2006; however, they fell sharply in the autumn of 2008. This rapid change shows that the cause of this change came from the inflow of speculation money into the grain market. The price of cereals for the production of biomass energy is higher than that of oil. A subsidy is indispensable for biomass energy production. It is not easy to think that a large amount of ethanol is produced from grain. Only the production of the ethanol from sugarcane in Brazil will increase in the future.
Induced quantum numbers of a magnetic vortex at nonzero temperature
Creators: name: Sitenko, Yurii A.
name: Gorkavenko, Volodymyr M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The phenomenon of the finite-temperature induced quantum numbers in fermionic systems with topological defects is analyzed. We consider an ideal gas of twodimensional relativistic massive electrons in the background of a defect in the form of a pointlike magnetic vortex with arbitrary flux. This system is found to acquire, in addition to fermion number, also orbital angular momentum, spin, and induced magnetic flux, and we determine the functional dependence of the appropriate thermal averages and correlations on the temperature, the vortex flux, and the continuous parameter of the boundary condition at the location of the defect. We find that nonnegativeness of thermal quadratic fluctuations imposes a restriction on the admissible range of values of the boundary parameter. The long-standing problem of the adequate definition of total angular momentum for the system considered is resolved.
description: 40 pages, 7 figures, journal version, minor corrections
Collapsing Calabi-Yau manifolds
Creators: name: Tosatti, Valentino
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 32Q25, 14J32, 14J27, 53C55, 53C25, 37F80

description: We survey some recent developments on the problem of understanding degenerations of Calabi-Yau manifolds equipped with their Ricci-flat Kahler metrics, with an emphasis on the case when the metrics are volume collapsing.
description: 33 pages, submitted to Surveys in Differential Geometry
Nonlinear response and axisymmetric wave propagation in functionally graded soft electro-active tubes
Creators: name: Wu, Bin
name: Destrade, Michel
name: Chen, Weiqiu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Soft electro-active (SEA) materials can be designed and manufactured with gradients in their material properties, to modify and potentially improve their mechanical response in service. Here, we investigate the nonlinear response of, and axisymmetric wave propagation in a soft circular tube made of a functionally graded SEA material and subject to several biasing fields, including axial pre-stretch, internal/external pressure, and through-thickness electric voltage. We take the energy density function of the material to be of the Mooney-Rivlin ideal dielectric type, with material parameters changing linearly along the radial direction. We employ the general theory of nonlinear electro-elasticity to obtain explicitly the nonlinear response of the tube to the applied fields. To study wave propagation under inhomogeneous biasing fields, we formulate the incremental equations of motion within the state-space formalism. We adopt the approximate laminate technique to derive the analytical dispersion relations for the small-amplitude torsional and longitudinal waves superimposed on a finitely deformed state. Comprehensive numerical results then illustrate that the material gradients and biasing fields have significant influences on the static nonlinear response and on the axisymmetric wave propagation in the tube. This study lays the groundwork for designing SEA actuators with improved performance, for tailoring tunable SEA waveguides, and for characterizing non-destructively functionally graded tubular structures.
Study on diversity in some human phenotypic characteristics
Creators: name: Ivanov Stanislav
name: Ivanova Evgeniya
Publisher: name: Zenodo
Year: 2021
Subjects: phenotypic variability, blood groups AB0 and Rh, human descriptive traits, human personality traits

description: The present study aimed to analyze the human phenotypic manifestation of AB0 and Rh blood groups, descriptive features cleft in chin, freckles, hairline, eyebrow shape, dimples, earlobes and the basic characteristics of personality extraversion, agreeableness, consciousness, emotional stability and intellect/imagination and the possible relations between them. About 950 individuals were included in the study. The frequencies of the investigated phenotypic groups were calculated by usage of descriptive statistics. The results obtained were analyzed by SPSS software. Statistically significant relationships were found between some of the studied human immunological, descriptive and behavior features as follows: lower levels of emotional stability in people with Rh+ blood groups (P<0.05); higher levels of agreeableness and consciousness in people without cleft in chin (P=0.003, P=0.001) and in persons with separeted eyebrows (P=0.03, P=0.008); higher levels of emotional stability in people with straight line of hair (P<0.05); higher levels of consciousness in people without dimples and higher levels of intellect/imagination in people with dimples (P<0.05); higher levels of agreeableness and intellect/imagination in people with a free ear lobe (P=0.004, P=0.02). No statistically significant differences were detected between blood groups of the AB0 system and the presence of freckles on the face from one side and the mean values of the personality characteristics by the other hand. The present study reveals interesting relationships between various human traits based on a complex approach. It could be used as an appropriate model for other future studies of human phenotypic diversity.
The Course of Japanese Agriculture under the 2E2F Crisis
Creators: name: Yoshio, YAGUCHI
name: Yoshio, YAGUCHI
Publisher: name: Unknown
Year: 2009
Subjects: Agricultural and Food Policy
Environmental Economics and Policy
Financial Economics
Resource /Energy Economics and Policy

description: We use the term “2E2F Crisis” to refer to the global crisis involving the environment, energy, food, and financial systems. The purpose of this research is to discuss the contents and characteristics of the food crisis that constitutes part of the 2E2F Crisis, and to present a framework for the future of Japanese agriculture. In this paper, “agricultural crisis” is added as an object of consideration. Specifically, the study looks at the following three points. First, this paper looks at a series of critical situations involving the environment, energy, food (agriculture), and finance in and after the second half of 2006, and clarifies the contents and character of the current Food Crisis by comparing it with the World Food Crisis of 1973-74. Moreover, this paper analyzes the character of the Agricultural Crisis (Depression) of the 1920s and 1930s, and the Agricultural Recession (especially in the United States) of the first half of the 1980s, seeking clues for the possibility of a future agricultural crisis. Second, this paper reconfirms the international and internal position of Japanese agriculture today, proposes the principle of agricultural trade based on the universal and fundamental worth of agriculture, and presents a future direction for the achievement of “sustainable agriculture”. Third, based on the above, this paper presents a future direction for Japanese agriculture which positions agriculture as a basic industry in Japanese society, and also shows how a society can be developed that will allow agriculture to take root. Moreover, the paper discusses concrete tasks and the direction for raising the capability for food self-sufficiency and a self-sufficiency ratio.
مظاهر العمران في عهد المغول الايلخانيين ( 651-756هـ/ 1253-1355م) "دراسة حضارية"
Creators: name: AL-Taai, Prof.Dr.Suaad
Publisher: name: figshare
Year: 2020
Subjects: subject: 210302 Asian History
subject: FOS: History and archaeology

description: Despite the violence in the history of the Mongols in the beginning of their appearance in the political arena and because of their preoccupation with their military campaigns and building the nucleus of their vast empire, they have not lost sight of the vocabulary of civilization, construction and urbanism and this is not coming between the night and its parts ,but it resulted from their mixing with the civilized and cultured peoples that were under their authority and in fact I see that the Mongols were the ones who underwent these peoples and they merged with them and contributed to the establishment of a sound foundation for the construction of a new civilization in its administrative and political institutions where a mixture of the Efficient elements in the development of cultural and administrative touches in every part of their state. the Mongol Alkhananat is interested in the arts of architecture and construction and the Ilkhan Argun ( 683-690AH/1284-1291) and Elkhan Gazan (694-703AH/1295-1304) in front of them as well as the construction of squares, resorts, schools, hospitals, mosques, markets, etc. Keywords; Argun, Gazan,Shanab Gazan, Endowments, Al Gazani river