cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dynamic Symmetries and Quantum Nonadiabatic Transitions
Creators: name: Li, Fixiang
name: Sinitsyn, Nikolai A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Kramers degeneracy theorem is one of the basic results in quantum mechanics. According to it, the time-reversal symmetry makes each energy level of a half-integer spin system at least doubly degenerate, meaning the absence of transitions or scatterings between degenerate states if the Hamiltonian does not depend on time explicitly. We generalize this result to the case of explicitly time-dependent spin Hamiltonians. We prove that for a spin system with the total spin being a half integer, if its Hamiltonian and the evolution time interval are symmetric under a specifically defined time reversal operation, the scattering amplitude between an arbitrary initial state and its time reversed counterpart is exactly zero. We also discuss applications of this result to the multistate Landau-Zener (LZ) theory.
description: 9 pages, 2 figures; Special V. Chernyak Festschrift Issue, Chemical Physics
"Ein anderer wird dich gürten und führen, wohin du nicht willst" (Joh 21,18)
Creators: name: Lieth, Elisabeth Von Der
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 27 Nr. 3 (1991): Concilium: Internationale Zeitschrift für Theologie, Band 27, Heft 3
"La propiedad privada a través de los distintos sistemas de gobierno"
Creators: name: Anillo Anillo, Laddy
Publisher: name: Universidad de Cartagena
Year: 1975
Subjects: Propiedad privada

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas. Programa de Derecho, 1975
description: Explicación de cómo las normas afectan de tal manera la titularidad sobre estos bienes que en determinados supuestos desnaturaliza el citado derecho. Con estos efectos se está produciendo un empobrecimiento de nuestro patrimonio histórico-artístico en favor del mercado negro y el de nuestra cultura.
Análisis lingüístico de la poética de Álvaro Cepeda Samudio en "La casa grande"
Creators: name: Ballesteros Zapata, Ernesto Enrique
Publisher: name: Universidad de Cartagena
Year: 2003
Subjects: Colombia - Biografías
Poesía colombiana

description: Tesis (Profesional en Lingüística y Literatura) -- Universidad de Cartagena. Facultad de Ciencias Humanas. Programa de Lingüística y Literatura, 2003
description: La finalidad del trabajo aquí realizado es examinar las características y propiedades del texto literario, teniendo en cuenta su comportamiento y complexión como discurso lingüístico. Esto es, si el discurso escrito y el discurso oral comparten la misma materia prima: la palabra, y por extensión, el lenguaje, con todo y sus cualidades. Entonces, se puede aceptar que la lingüística, salvando las asumidas fronteras de la frase y la oración, puede extender sus terrenos para acoger a la narrativa y por qué no, a la literatura, y así explorar las propiedades de este último campo que resultan compatibles con la de su habitual área de trabajo.
Sistemas de compensación en empresas del sector de la construcción en la Ciudad de Cartagena
Creators: name: Cuello Pérez, Grehis
name: Sibaja González, Haznery
Publisher: name: Universidad de Cartagena
Year: 2011
Subjects: Administración de personal
Recursos humanos
Sistemas de compensacion-sector de la construcción-Cartagena-Bolivar

description: Tesis(Administrador de Empresas).-Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas,2011
description: El proyecto de investigación “ANÁLISIS DE LOS SISTEMAS DE COMPENSACIÓN EN EMPRESAS DEL SECTOR DE LA CONSTRUCCIÓN DE LA CIUDAD DE CARTAGENA”, es realizado por estudiantes del programa de administración de empresas de la Universidad de Cartagena. El propósito del presente estudio es analizar cómo se encuentra actualmente este sector respecto al tema en estudio, lo cual en el caso de encontrar dificultades, poder recomendar a sus directivos acerca de los resultados obtenidos y que puedan afectar de manera positiva en el aspecto de las compensaciones Por lo anterior, se realizó la medición de los sistemas de compensación en cuatro empresas de la ciudad de Cartagena, las cuales son: C.H Pereira construcciones, Mejía y Villegas construcciones, Jer ingeniería y consultoría S.A.S y Aico E.U tomando como muestra una población total de 170 funcionarios y aplicando un instrumento de valoración del mismo. Después de obtener los resultados, se analizaron acorde a las variables propuestas en el mismo estudio. El análisis de los resultados evidenció cuáles de las variables evaluadas necesitaban atención inmediata. De acuerdo a dichos resultados, se elaboraron las conclusiones y recomendaciones de mejora de estos sistemas de las empresas objeto de estudio.
Spinodal Instabilities of Baryon-Rich Quark-gluon Plasma in the PNJL Model
Creators: name: Li, Feng
name: Ko, Che Ming
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using the Polyakov-Nambu-Jona-Lasinia (PNJL) model, we study the spinodal instability of a baryon-rich quark-gluon plasma in the linear response theory. We find that the spinodal unstable region in the temperature and density plane shrinks with increasing wave number of the unstable mode and is also reduced if the effect of Polyakov loop is not included. In the small wave number or long wavelength limit, the spinodal boundaries in both cases of with and without the Polyakov loop coincide with those determined from the isothermal spinodal instability in the thermodynamic approach. Also, the vector interactions among quarks is found to suppress unstable modes of all wave numbers. Moreover, the growth rate of unstable modes initially increases with the wave number but is reduced when the wave number becomes large. Including the collisional effect from quark scattering via the linearized Boltzmann equation, we further find that it decreases the growth rate of unstable modes of all wave numbers. Relevance of these results to relativistic heavy ion collisions is discussed.
description: 13 pages, 9 figures
Caracterización de agregados y diseño de mezcla para la producción de morteros y concreto predosficado y empacado. Estudio preliminar de comercialización
Creators: name: Arango Pineda, Fabian Ernesto
name: Ruiz Garcia, Rodrigo Rafael
Publisher: name: Universidad de Cartagena
Year: 2002
Subjects: Agregados
Morteros
concreto predosificado

description: Tesis (Ingeniero Civil). - - Universidad de Cartagena. Facultad de Ciencias E Ingeniería. Programa Ingeniería Civil, 2002.
description: El presente estudio tiene por objeto caracterizar y modelar los materiales provenientes de las canteras de bonanza situada en municipio de Turbaco bolívar, Rotinet y Arroyo de Piedra del atlántico, para realizar la dosificación optima de los materiales para la producción y posterior comercialización del mortero y concreto predosificado y empacado de acuerdo con la resistencia deseada.
Band gap engineering of MoS$_2$ upon compression
Creators: name: López-Suárez, Miquel
name: Neri, Igor
name: Rurali, Riccardo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Molybdenum disulfide (MoS$_2$) is a promising candidate for 2D nanoelectronic devices, that shows a direct band-gap for monolayer structure. In this work we study the electronic structure of MoS$_2$ upon both compressive and tensile strains with first-principles density-functional calculations for different number of layers. The results show that the band-gap can be engineered for experimentally attainable strains (i.e. $\pm 0.15$). However compressive strain can result in bucking that can prevent the use of large compressive strain. We then studied the stability of the compression, calculating the critical strain that results in the on-set of buckling for free-standing nanoribbons of different lengths. The results demonstrate that short structures, or few-layer MoS$_2$, show semi-conductor to metal transition upon compressive strain without bucking.
Diseño y elaboración de un programa de auditoria de sistemas para la Caja de Compensación Familiar del Magdalena (Cajamag)
Creators: name: Montes Robles, Dayana Beatriz
name: Rodríguez García, Cristina Isabel
Publisher: name: Universidad de Cartagena
Year: 2007
Subjects: Industrias de servicios; Industria de Servicios - Control de Calidad; Programa de Auditoria de Sistema

description: Tesis (Contador Público) -- Universidad de Cartagena. Facultad de Ciencias Económicas E Ingeniería. Programa de Contaduría Pública. 2007
description: El presente estudio, tiene por objeto, diseñar y elaborar un programa de auditoria de sistemas a la medida dela Caja de Compensación Familiar del magdalena que permita el mejoramiento operacional de la empresa
Secret-Key Agreement with Public Discussion subject to an Amplitude Constraint
Creators: name: Zorgui, Marwen
name: Rezki, Zouheir
name: Alomair, Basel
name: Alouini, Mohamed-Slim
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper considers the problem of secret-key agreement with public discussion subject to a peak power constraint $A$ on the channel input. The optimal input distribution is proved to be discrete with finite support. The result is obtained by first transforming the secret-key channel model into an equivalent Gaussian wiretap channel with better noise statistics at the legitimate receiver and then using the fact that the optimal distribution of the Gaussian wiretap channel is discrete. To overcome the computationally heavy search for the optimal discrete distribution, several suboptimal schemes are proposed and shown numerically to perform close to the capacity. Moreover, lower and upper bounds for the secret-key capacity are provided and used to prove that the secret-key capacity converges for asymptotic high values of $A$, to the secret-key capacity with an average power constraint $A^2$. Finally, when the amplitude constraint A is small ($A \to 0$), the secret-key capacity is proved to be asymptotically equal to the capacity of the legitimate user with an amplitude constraint A and no secrecy constraint.
title: Operative Ektropiumkorrektur – Tarsalzungenplastik mit resorbierbarem oder nichtresorbierbarem Nahtmaterial?
Creators: name: Sommer, Falk
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Fragestellung: Das senile Unterlidektropium ist eine der häufigsten Unterlidfehlstellungen des Erwachsenen. Verschiedene operative Verfahren zur Korrektur sind beschrieben. Die Tarsalzungenplastik gilt als Standardprozedur. Die Fixation der Tarsalzunge am temporalen Periost kann mit resorbierbarem[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
title: Das OP-Risiko bei perforierender Keratoplastik ist minimierbar
Creators: name: Viestenz, Arne
name: Zuche, H.
name: Morinello, E.
name: Viestenz, A.
name: Volk, T.
name: Seitz, B.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Die Vis-à-tergo (VAT) ist eine schwere Komplikation während der perforierenden Keratoplastik (PKP). Die Rolle von nichtdepolarisierenden Muskelrelaxanzien als potenzieller Risikofaktor für eine VAT bei der PKP wurde untersucht. Methoden: 95 Patienten mit einer PKP wurden[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
title: Keratokonus: heutige Therapieoptionen
Creators: name: Raiskup, Frederik
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: In der Therapie des Keratokonus ist im Frühstadium eine Korrektur mit Brille oder Kontaktlinse (weiche oder formstabile) die Option der Wahl. Um das Fortschreiten des Keratokonus zu verhindern, ist die Kollagen-Vernetzung die Methode der ersten Wahl. Als Alternative zur Verbesserung des Visus [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
title: Episkleritis/Skleritis
Creators: name: Pleyer, Uwe
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Entzündliche Veränderungen der Sklera und des episkleralen Gewebes umfassen ein Spektrum von klinisch sehr unterschiedlichen Erkrankungen. Während die Episkleritis meist unproblematisch verläuft und keine funktionellen Veränderungen nach sich zieht, verläuft die Skleritis[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
Análisis comparativo de las dos ultimas bonanzas cafeteras en Colombia
Creators: name: Zarza Bello, Jose Maria
name: Cantillo, Jose Luis
Publisher: name: Universidad de Cartagena
Year: 1988
Subjects: Café
Café - Comercialización
Café - Aspectos económicos - Colombia

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1988.
description: El presente estudio tiene por objeto demostrar que por no existir planes previos para el manejo de las bonanzas, se ha incurrido siempre en las mismas secuelas que precisamos a continuación: Inflación, Devolución, Alto Costo de Vida.
Supplementary document for Bidirectional planar absorber with polarization-selective absorption and reflection capabilities - 6544869.pdf
Creators: name: Hsun, Chun-Hao
name: Chen, Fu-Chiarng
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Details Description of the Fabry-Perot Cavity Model and Effective Medium Theory
Evaluación de la creación de una Empresa Productora y Comercializadora de camaron en la Isla de Barú
Creators: name: Gómez León, Antonio José
name: Iriarte Rico, Laiza Melina
Publisher: name: Universidad de Cartagena
Year: 2007
Subjects: Industria camaronera - Industria de procesamiento de alimentos;
Camarón;
Mercadeo

description: Tesis (Administrador Industrial) -- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración Industrial, 2007
description: La producción mundial de camarón cultivado actualmente se encuentra agrupada en siete países, la mayoría de ellos en vía de desarrollo. Asia es la región productora más importante en el mundo, con una producción de aproximadamente cuatro quintos del camarón cultivado en el mundo. Por su parte, el resto de la producción es abastecida en su mayoría por América Latina, dentro de la que se destacan como grandes exportadores Ecuador y Colombia1.
"De la presunción y su papel en el derecho"
Creators: name: Vega Caraballo, Víctor
Publisher: name: Universidad de Cartagena
Year: 1974
Subjects: Presunción de inocencia - Colombia

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas. Programa de Derecho, 1974
description: Presunciones legales, como reglas jurídicas sustanciales para la aplicación del derecho objetivos a ciertos casos concretos, cuyo efectos sustanciales se presentan fuera del proceso y son reconocidos en este.
Computational Pathology: Challenges and Promises for Tissue Analysis
Creators: name: Fuchs, Thomas J.
name: Buhmann, Joachim M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The histological assessment of human tissue has emerged as the key challenge for detection and treatment of cancer. A plethora of different data sources ranging from tissue microarray data to gene expression, proteomics or metabolomics data provide a detailed overview of the health status of a patient. Medical doctors need to assess these information sources and they rely on data driven automatic analysis tools. Methods for classification, grouping and segmentation of heterogeneous data sources as well as regression of noisy dependencies and estimation of survival probabilities enter the processing workflow of a pathology diagnosis system at various stages. This paper reports on state-of-the-art of the design and effectiveness of computational pathology workflows and it discusses future research directions in this emergent field of medical informatics and diagnostic machine learning.
Three-Dimensional All-Dielectric Photonic Topological Insulator
Creators: name: Slobozhanyuk, Alexey
name: Mousavi, S. Hossein
name: Ni, Xiang
name: Smirnova, Daria
name: Kivshar, Yuri S.
name: Khanikaev, Alexander B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The discovery of two-dimensional topological photonic systems has transformed our views on electromagnetic propagation and scattering of classical waves, and a quest for similar states in three dimensions, known to exist in condensed matter systems, has been put forward. Here we demonstrate that symmetry protected three-dimensional topological states can be engineered in an all-dielectric platform with the electromagnetic duality between electric and magnetic fields ensured by the structure design. Magneto-electric coupling playing the role of a synthetic gauge field leads to a topological transition to an insulating regime with a complete three-dimensional photonic bandgap. An emergence of surface states with conical Dirac dispersion and spin-locking is unimpeded. Robust propagation of surface states along two-dimensional domain walls defined by the reversal of magneto-electric coupling is confirmed numerically by first principle studies. It is shown that the proposed system represents a table-top platform for emulating relativistic physics of massive Dirac fermions and the surface states revealed can be interpreted as Jackiw-Rebbi states confined to the interface between two domains with opposite particle masses.
description: 17 pages, 5 figures
title: Skleraverdünnung nach mehrfacher Gabe von Anti-VEGF in den gleichen Quadranten
Creators: name: Ventzke, Sylvana
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Veränderungen in der skleralen Architektur, die durch intravitreale anti-VEGF-Injektionen verursacht und mittels Vorderabschnitts-OCT detektiert werden können. Methoden: Eingeschlossen wurden 35 Augen von 35 Patienten mit einer Differenz von mehr als 30 intravitrealen anti-VEGF[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
title: Indikationen zur Glaukomoperation
Creators: name: Böhm, Andreas G.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Wenn der Augeninnendruck trotz maximaler medikamentöser Therapie nicht ausreichend gesenkt werden kann, muss der Augeninnendruck durch eine Laserbehandlung oder Operation gesenkt werden. Ist nur eine geringe Drucksenkung notwendig ist, dann kann zunächst eine Lasertrabekuloplastik versucht[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
Observation of Dirac-Like Semi-Metallic Phase in NdSb
Creators: name: Neupane, Madhab
name: Hosen, M. Mofazzel
name: Belopolski, Ilya
name: Wakeham, Nicholas
name: Dimitri, Klauss
name: Dhakal, Nagendra
name: Zhu, Jian-Xin
name: Hasan, M. Zahid
name: Bauer, Eric D.
name: Ronning, Filip
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The search of new topological phases of matter is one of the new directions in condensed matter physics. Recent experimental realizations of Dirac semimetal phases pave the way to look for other exotic phases of matter in real materials. Here we present a systematic angle-resolved photoemission spectroscopy (ARPES) study of NdSb, a potential candidate for hosting a Dirac semi-metal phase. Our studies reveal two hole-like Fermi surface pockets present at the zone center ($Γ$) point as well as two elliptical electron-pockets present in the zone corner (X) point of the Brillouin zone (BZ). Interestingly, Dirac-like linearly dispersive states are observed about the zone corner (X) point in NdSb. Our first principles calculations agree with the experimentally observed bands at the $Γ$ point. Moreover, the Dirac-like state observed in NdSb may be a novel correlated state, not yet predicted in calculations. Our study opens a new direction to look for Dirac semi-metal states in other members of the rare earth monopnictide family.
description: 6 pages, 3 figures, To appear in Journal of Physics: Condensed Matter
title: Kindliches Glaukom
Creators: name: Grehn, Franz
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Glaukome im Kindesalter stellen den Augenarzt vor besondere Herausforderungen. Die frühzeitige Diagnose eines kongenitalen Glaukoms und eine erfolgreiche Operation können für das zukünftige Leben des Kindes von außerordentlicher Bedeutung sein. Descemet Risse, Hornhauttrübung,[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
Additional file 1 of RealTalk evidence-based communication training resources: development of conversation analysis-based materials to support training in end-of-life-related health and social care conversations
Creators: name: Parry, Ruth
name: Whittaker, Becky
name: Pino, Marco
name: Jenkins, Laura
name: Worthington, Esme
name: Faull, Christina
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1.
Evidence of both surface and bulk Dirac bands in ZrSiS and the unconventional magnetoresistance
Creators: name: Wang, Xuefeng
name: Pan, Xingchen
name: Gao, Ming
name: Yu, Jihai
name: Jiang, Juan
name: Zhang, Junran
name: Zuo, Huakun
name: Zhang, Minhao
name: Wei, Zhongxia
name: Niu, Wei
name: Xia, Zhengcai
name: Wan, Xiangang
name: Chen, Yulin
name: Song, Fengqi
name: Xu, Yongbing
name: Wang, Baigeng
name: Wang, Guanghou
name: Zhang, Rong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The unconventional magnetoresistance of ZrSiS single crystals is found unsaturated till the magnetic field of 53 T with the butterfly shaped angular dependence. Intense Shubnikov-de Haas oscillations resolve a bulk Dirac cone with a nontrivial Berry phase, where the Fermi surface area is 1.80*10^-3 Å-2 and reaches the quantum limit before 20 T. Angle resolved photoemission spectroscopy measurement reveals an electronic state with the two-dimensional nature around the X point of Brillouin zone boundary. By integrating the density functional theory calculations, ZrSiS is suggested to be a Dirac material with both surface and bulk Dirac bands.
HOZIRGI O'ZBEK TILSHUNOSLIGIDA RAVISH MASALASI (1-qism)
Creators: name: Xabibillayev, Nodirbek
Publisher: name: Zenodo
Year: 2024

description: murakkab tarkibga ega bo‘lgan so‘zlar qatoridan ravishlar ham, albatta, o‘rin oladi. Tarkibida yaxlitlanib qoladigan qo‘shimchalarning mavjudligi ularning tarkibi murakkablashishiga sabab bo‘ladi. Bu turkum so‘zlarining yasalishi masalasi o‘zbek tilshunosligida avvaldan munozaralarga boy bo‘lgan. Mazkur maqola ana shu masalalarga bag‘ishlanadi. Muallif ravishlarga doir ishonchli manbalarni o‘rganib, shaxsiy xulosalarini ushbu kichik tadqiqot davomida keltirib o‘tgan.
Supporting Multi-hop Device-to-Device Networks Through WiFi Direct Multi-group Networking
Creators: name: Funai, Colin
name: Tapparello, Cristiano
name: Heinzelman, Wendi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: With the increasing availability of mobile devices that natively support Device-to-Device (D2D) communication protocols, we are presented with a unique opportunity to realize large scale ad hoc wireless networks. Recently, a novel D2D protocol named WiFi Direct has been proposed and standardized by the WiFi Alliance with the objective of facilitating the interconnection of nearby devices. However, WiFi Direct has been designed following a client-server hierarchical architecture, where a single device manages all the communications within a group of devices. In this paper, we propose and analyze different solutions for supporting the communications between multiple WiFi Direct groups using Android OS devices. By describing the WiFi Direct standard and the limitations of the current implementation of the Android WiFi Direct framework, we present possible solutions to interconnect different groups to create multi-hop ad hoc networks. Experimental results show that our proposed approaches are feasible with different overhead in terms of energy consumption and delay at the gateway node. Additionally, our experimental results demonstrate the superiority of techniques that exploit the device ability to maintain simultaneous physical connections to multiple groups.
description: 7 pages, 6 figures
title: Self-Efficacy and Entrepreneurial Performance of Start-Ups
Creators: name: Caliendo, Marco
name: Kritikos, Alexander S.
name: Rodriguez, Daniel
name: Stier, Claudia
Publisher: name: Universität Potsdam
Year: 2023
Subjects: subject: 330 Wirtschaft

description: Self-efficacy reflects the self-belief that one can persistently perform difficult and novel tasks while coping with adversity. As such beliefs reflect how individuals behave, think, and act, they are key for successful entrepreneurial activities. While existing literature mainly analyzes the influence of the task-related construct of entrepreneurial self-efficacy, we take a different perspective and investigate, based on a representative sample of 1,405 German business founders, how the personality characteristic of generalized self-efficacy influences start-up performance as measured by a broad set of business outcomes up to 19 months after business creation. Outcomes include start-up survival and entrepreneurial income, as well as growth-oriented outcomes such as job creation and innovation. We find statistically significant and economically important positive effects of high scores of self-efficacy on start-up survival and entrepreneurial income, which become even stronger when focusing on the growth-oriented outcome of innovation. Furthermore, we observe that generalized self-efficacy is similarly distributed between female and male business founders, with effects being partly stronger for female entrepreneurs. Our findings are important for policy instruments that are meant to support firm growth by facilitating the design of more target-oriented offers for training, coaching, and entrepreneurial incubators.
description: CEPA Discussion Papers; 61
Aug 19 Friday.
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
title: Nahtlose Fixation der Amnionmembran bei der Augenoberflächenerkrankungen
Creators: name: Kotomin, Ilya
name: Engelmann, K.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Die Wundheilstörung im Bereich der oberflächlichen Hornhaut infolge chronischer Erkrankungen, Verätzungen oder schwerer postoperativer Verläufe ist ein häufiges Problem in der Augenheilkunde. Bei unzureichendem Effekt der Lokaltherapie ist die chirurgische Aufbringung einer [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
title: Vitreomakuläre Traktionen (VMT)
Creators: name: Wiedemann, Peter
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Die vitreomakuläre Traktionssyndrom trägt bei zu verschiedenen Erkrankungen der Makula wie zystoides Makulödem, Makulaloch und epiretinaler Gliose. Bei der Behandlung konkurriert die Ocriplasmin (Jetrea)-Injektion mit der Standardtherapie Vitrektomie und dem abwartenden Beobachten.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
Aug 20 Saturday
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
Obliquity Variability of a Potentially Habitable Early Venus
Creators: name: Barnes, Jason W.
name: Quarles, Billy
name: Lissauer, Jack J.
name: Chambers, John
name: Hedman, Matthew M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Venus currently rotates slowly, with its spin controlled by solid-body and atmospheric thermal tides. However, conditions may have been far different 4 billion years ago, when the Sun was fainter and most of the carbon within Venus could have been in solid form, implying a low-mass atmosphere. We investigate how the obliquity would have varied for a hypothetical rapidly rotating Early Venus. The obliquity variation structure of an ensemble of hypothetical Early Venuses is simpler than that Earth would have if it lacked its large Moon (Lissauer et al., 2012), having just one primary chaotic regime at high prograde obliquities. We note an unexpected long-term variability of up to $\pm7^\circ$ for retrograde Venuses. Low-obliquity Venuses show very low total obliquity variability over billion-year timescales -- comparable to that of the real Moon-influenced Earth.
description: in revision at _Astrobiology_
Fortalecimiento de la comunicación orientada a dinamizar la participación de los padres en el proceso educativo de sus hijos, institución educativa hijos de María
Creators: name: Medina Pérez, Vilma Esther
Publisher: name: Universidad de Cartagena
Year: 2008
Subjects: subject: Trabajo social
subject: Comunicación - Uso terapéutico
subject: Educación secundaria

description: El objetivo fundamental, de la ejecución de este proyecto de práctica, fue entregar una alternativo de solución a padres, docentes y estudiantes, que fuera esencial para originar un cambio positivo en los dos entornos y de esta manera afianzar en los niños un cambio que se evidencie en la convivencia pacifica y la participación de los padres en la escuela. La iniciativa para fortalecer la comunicación se origino debido a la ausencia de muchos padres al realizársele una citación en la escuela, mostrándose así una negatividad y escasa participación en el proceso educativo de sus hijos, razón por la cual se tiende a disminuir la comunicación entre los dos contextos familia y escuela.
Aug 22 Monday
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
The slope, curvature, and higher parameters in $pp$ and $\bar{p}p$ scattering, and the extrapolation of measurements of $dσ(s,t)/dt$ to $t=0$
Creators: name: Block, Martin M.
name: Durand, Loyal
name: Ha, Phuoc
name: Halzen, Francis
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the effects of curvature in the expansion of the logarithm of the differential elastic scattering cross section near $t=0$ as $dσ(s,t)/dt=dσ(s,0)/dt\,\times\exp(Bt+Ct^2+Dt^3\cdots)$ in an eikonal model for $pp$ and $\bar{p}p$ scattering, and use the results to discuss the extrapolation of measured differential cross sections and the slope parameters $B$ to $t=-q^2=0$. We find that the curvature effects represented by the parameters $C$ and $D$, while small, lead to significant changes in the forward slope parameter relative to that determined in a purely exponential fit, and to smaller but still significant changes in the forward elastic scattering and total cross sections. Curvature effects should therefore be considered in future analyses or reanalyses of the elastic scattering data.
description: 13 pages, 7 figures
An assessment on the Mexico gravity network and its integration to IGRF
Creators: name: Avalos Naranjo, David
name: Alvarado Cortes, Apolo
name: Mendoza Martinez, Marco Antonio
name: Pagiatakis, Spiros
name: Medina Parra, Francisco Javier
name: Robles Bravo, Jordan
name: Saravia Corona, Jovany
name: Arellano Sánchez, Javier
Publisher: name: Zenodo
Year: 2022
Subjects: gravity network
absolute gravity
geodesia

description: This presentation informs about the status of the national reference gravity network in Mexico as it was on 2022 and about the results of absolute gravity surveys performed on 2018, which bring some reference stations referred to the most recent standards of the International Gravity Reference Frame. Then it is presented the result from an analysis of the differences observed between the classical reference IGSN71 and the new standard. A map is introduced to show the magnitude of differences detected in Mexico between the old and new international standards.
title: VEGF und Anti-VEGF-Therapie
Creators: name: Eichler, Wolfram
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Die Therapie der exsudativen altersbedingten Makuladegeneration (AMD) und des Makulaödems basiert auf der intravitrealen Injektion von VEGF- (Vascular Endothelial Growth Factor-) Inhibitoren. Die antiangiogen wirkenden Anti-VEGF-Therapeutika Bevacizumab (Avastin®), Ranibizumab (Lucentis®)[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
title: Retinopathia solaris – so selten wie die Sonnenfinsternis
Creators: name: Genest, Katharina
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Die Retinopathia solaris wird durch ungeschütztes direktes Betrachten der Sonne verursacht. Normalerweise kommt dies nicht vor, da durch die starke Blendung der Sonnenstrahlung ein reflektorisches Schließen der Augenlider eintritt. Bei einer Sonnenfinsternis kommt es nicht zu [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
title: Faktoren für die Effektivität der SLT bei behandelten Glaukompatienten
Creators: name: Orphal, Johanna
name: Pillunat, K.
name: Spörl, E.
name: Pillunat, L.E.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Ziel der Studie ist es eine Aussage über die Effektivität der Selektiven Lasertrabekuloplastik (SLT) bei behandelten Patienten zu treffen und Einflussfaktoren auf den drucksenkenden Effekt der Behandlung zu identifizieren. Methoden: In die prospektive Studie wurden 56 Augen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
title: Angewandte Telemedizin in der pleoptisch unterstützenden Amblyopiebehandlung: Erste Ergebnisse der fernkontrollierten Sehschulung über eine „Datenautobahnbrücke“ Dresden-Ufa
Creators: name: Kämpf, Uwe
name: Bikbov, M.M.
name: Kämpf, U.
name: Zaynutdinova, G.H.
name: Kudoyarova, K.I.
name: Lukyanova, E.E.
name: Muchamedjarow, F.A.
name: Heim, E.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Vorgestellt werden Pilotergebnisse eines gemeinsamen baschkirisch-deutschen Projektes auf dem Gebiet der angewandten Telemedizin. Gegenstand des Vorhabens ist die pleoptisch unterstützende Sehschulung bei Amblyopie unter Einsatz eines über das Internet betriebenen Visus-Stimulators.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
Influence of Polymer Shape on Depletion Potentials and Crowding in Colloid-Polymer Mixtures
Creators: name: Lim, Wei Kang
name: Denton, Alan R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Depletion-induced interactions between colloids in colloid-polymer mixtures depend in range and strength on size, shape, and concentration of depletants. Crowding by colloids in turn affects shapes of polymer coils, such as biopolymers in biological cells. By simulating hard-sphere colloids and random-walk polymers, modeled as fluctuating ellipsoids, we compute depletion-induced potentials and polymer shape distributions. Comparing results with exact density-functional theory calculations, molecular simulations, and experiments, we show that polymer shape fluctuations play an important role in depletion and crowding phenomena.
description: 7 pages, 3 figures
Aug 24 Wednesday
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
Experimental Perfect Quantum State Transfer
Creators: name: Chapman, Robert J.
name: Santandrea, Matteo
name: Huang, Zixin
name: Corrielli, Giacomo
name: Crespi, Andrea
name: Yung, Man-Hong
name: Osellame, Roberto
name: Peruzzo, Alberto
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The transfer of data is a fundamental task in information systems. Microprocessors contain dedicated data buses that transmit bits across different locations and implement sophisticated routing protocols. Transferring quantum information with high fidelity is a challenging task, due to the intrinsic fragility of quantum states. We report on the implementation of the perfect state transfer protocol applied to a photonic qubit entangled with another qubit at a different location. On a single device we perform three routing procedures on entangled states with an average fidelity of 97.1%. Our protocol extends the regular perfect state transfer by maintaining quantum information encoded in the polarisation state of the photonic qubit. Our results demonstrate the key principle of perfect state transfer, opening a route toward data transfer for quantum computing systems.
Aug 23 Tuesday.
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
The SSL Interplay: Augmentations, Inductive Bias, and Generalization
Creators: name: Cabannes, Vivien
name: Kiani, Bobak T.
name: Balestriero, Randall
name: LeCun, Yann
name: Bietti, Alberto
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (stat.ML)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: G.3
subject: 68Q32

description: Self-supervised learning (SSL) has emerged as a powerful framework to learn representations from raw data without supervision. Yet in practice, engineers face issues such as instability in tuning optimizers and collapse of representations during training. Such challenges motivate the need for a theory to shed light on the complex interplay between the choice of data augmentation, network architecture, and training algorithm. We study such an interplay with a precise analysis of generalization performance on both pretraining and downstream tasks in a theory friendly setup, and highlight several insights for SSL practitioners that arise from our theory.
title: Premiumlinsen
Creators: name: Schrecker, Jens
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Um bei der Implantation einer intraokularen Linse eine größtmögliche Patientenzufriedenheit zu erreichen stehen dem Operateur heute zahlreiche Speziallinsen zur Verfügung. Der Effekt des einfachen Aphakieausgleichs durch eine monofokale Standardlinse kann dadurch deutlich erweitert[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
Primary Traffic Characterization and Secondary Transmissions
Creators: name: Liu, Yingxi
name: Tewfik, Ahmed
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Channel idle time distribution based secondary transmission strategies have been studied intensively in the literature. Under various performance metrics, the ultimate performance of secondary devices are eventually dictated by the presumed channel idle time distribution. Such distributions can take any arbitrary form in practice. In this work, we study idle time distributions in wireless local area networks (WLAN) using large amount of the channel idle time data collected in real-world WLAN networks. We demonstrate with experimental data that the channel idle time distribution can be closely modeled by hyper-exponential distribution. Furthermore, one can treat the primary packet arrival process as a semi-Markov modulated Poisson process. Several secondary transmission strategies are discussed under this model. It is shown that using only one hyper-exponential distribution, the secondary user can achieve a desirable performance when the primary packet arrival process is stationary. However, experimental data suggests that in practice, this process is not stationary and the secondary user can experience a large performance loss with stationary transmission strategy. We propose a novel transmission strategy that achieves suboptimal secondary user performance when the idle time distribution is not stationary. The performances of secondary transmission strategies are demonstrated using experimental data.
title: Gonioskopie – Wieso, weshalb, warum?
Creators: name: Unterlauft, Jan D.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Die Gonsiokopie gehört zu den grundlegenden ophthalmologischen Untersuchungen, die jeder Augenarzt regelmäßig an der Spaltlampe durchführen kann und sollte. Der Kammerwinkel lässt sich mithilfe verschiedener Kontaktgläser leicht und schnell untersuchen. Im gesunden, offenen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung 2015 der Sächsischen Augenärztlichen Gesellschaft
Aug 21 Sunday
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
Crossover phenomena of percolation transition in evolution networks with hybrid attachment
Creators: name: Chen, X. L.
name: Yang, C.
name: Zhong, L. F.
name: Tang, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: A first-order percolation transition, called explosive percolation, was recently discovered in evolution networks with random edge selection under a certain restriction. However, the network percolation with more realistic evolution mechanisms such as preferential attachment has not yet been concerned. We propose a tunable network percolation model by introducing a hybrid mechanism of edge selection into the Bohman-Frieze-Wormald model, in which a parameter adjusts the relative weights between random and preferential selections. A large number of simulations indicate that there exist crossover phenomena of percolation transition by adjusting the parameter in the evolution processes. When the strategy of selecting a candidate edge is dominated by random selection, a single discontinuous percolation transition occurs. When a candidate edge is selected more preferentially based on node's degree, the size of the largest component undergoes multiple discontinuous jumps, which exhibits a peculiar difference from the network percolation of random selection with a certain restriction. Besides, the percolation transition becomes continuous when the candidate edge is selected completely preferentially.
description: 7 pages, 6 figures
Estudio evaluativo del proyecto Bolívar No. 1
Creators: name: Ugarriza U, Rogelio
name: Figueroa O, Esteban
Publisher: name: Universidad de Cartagena
Year: 1975
Subjects: Agricultura y desarrollo- Bolívar (Departamento)
Desarrollo Rural; Desarrollo agropecuario

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1975
description: El presente trabajo tiene como objetivo, mejorar las condiciones de vida de la población rural, orientando y apoyando sus explotaciones agropecuarias con crédito y asistencia técnica, y mejorar el mercadeo de los productos a través de la Cooperativa Agropecuaria de Bolìvar.