cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
MAPCAT: Monitoring AGN with Polarimetry at the Calar Alto Telescopes
Creators: name: Agudo, Ivan
name: Molina, Sol N.
name: Gomez, Jose L.
name: Marscher, Alan P.
name: Jorstad, Svetlana G.
name: Heidt, Jochen
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We introduce MAPCAT, a long-term observing program for "Monitoring of AGN with Polarimetry at the Calar Alto Telescopes". Multi-spectral-range studies are critical to understand some of the most relevant current problems of high energy astrophysics of blazars such as their high energy emission mechanisms and the location of their gamma-ray emission region through event associations across the spectrum. Adding multi-spectral-range polarimetry allows for even more reliable identification of polarized flares across the spectrum in these kind of objects, as well as for more accurate modeling of their magnetic field. As part of a major international effort to study the long term multi-spectral range polarimetric behavior of blazars, MAPCAT uses -since mid 2007- CAFOS on the 2.2m Telescope at the Calar Alto Observatory (Almeria, Spain) to obtain monthly optical (R-band) photo-polarimetric measurements of a sample of 34 of the brightest gamma-ray, optical, and radio-millimeter blazars accessible from the northern hemisphere.
description: To be published in the proceedings of High Energy Phenomena in Relativistic Outflows III (HEPRO III, IJMPCS). 4 pages
title: Gender, Diversity und Chancengleichheit in der Wirtschaft
Creators: name: Wesely, Sabine
Publisher: name: Hochschule Hannover
Year: 2016
Subjects: subject: 360 Soziale Probleme, Sozialdienste, Versicherungen

description: Gender und Diversity spielen in der Wirtschaft und Verwaltung eine große Rolle. Der Begriff Gender beschreibt das soziale Geschlecht. In unserer Wahrnehmung unterscheiden wir zwischen männlich und weiblich und ordnen entsprechende Attribute zu. Die Differenzierung geschieht auf individueller, interaktionaler und institutionaler Ebene und ist immer mit Wertungen versehen (Gender Orders). Dadurch kommt es zu Ungleichheiten und Ungerechtigkeiten. Der Begriff „Diversity“ (Vielfalt) beschreibt die Vielfalt der Mitglieder (z.B. die Mitarbeitenden), der Bezugsgruppen (z.B. Geldgeber) und der Kunden einer Organisation bzw. eines Betriebes. Unterschieden werden Geschlecht, Kultur, Alter, Behinderung, familiäre Situation und sexuelle Orientierung. Ziel von Gender Mainstreaming und Diversity Management ist es, Chancengleichheit im Unternehmen bzw. in der Verwaltung zu schaffen. Chancengleichheit als personalpolitisches Ziel beinhaltet den Abbau von Diskriminierungen, gleiche Rechte und Chancen und Möglichkeiten sowie die sinnvolle Berücksichtigung und Einbeziehung der verschiedenen Mitarbeiter- und Kundengruppen. In dem folgenden Artikel werden Gender Mainstreaming und Diversity Management und deren Instrumente beschrieben. Eine Checkliste, Praxis und Fallbeispiele ermöglichen das Bearbeiten des Themas und die Umsetzung in die Praxis.
description: Arbeitspapier / Hochschule Hannover, Fakultät IV, 08-2009
Internal convection in thermoelectric generator models
Creators: name: Apertet, Y.
name: Ouerdane, H.
name: Goupil, C.
name: Lecoeur, Ph.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Coupling between heat and electrical currents is at the heart of thermoelectric processes. From a thermal viewpoint this may be seen as an additional thermal flux linked to the appearance of electrical current in a given thermoelectric system. Since this additional flux is associated to the global displacement of charge carriers in the system, it can be qualified as convective in opposition to the conductive part associated with both phonons transport and heat transport by electrons under open circuit condition, as, e.g., in the Wiedemann-Franz relation. In this article we demonstrate that considering the convective part of the thermal flux allows both new insight into the thermoelectric energy conversion and the derivation of the maximum power condition for generators with realistic thermal coupling.
description: 8 pages, 3 figures
Long-Term Effects of a Recession at Labor Market Entry in Japan and the United States
Creators: name: Genda, Yuji
name: Kondo, Ayako
name: Ohta, Souichi
Publisher: name: Columbia University
Year: 2007
Subjects: Economics
Labor economics
Industrial relations

description: This paper examines effects of entering the labor market during a recession on subsequent earnings and employment for Japanese and American men, using comparable household labor force surveys. Previous analyses focus on search theoretic and implicit-contract arguments, which have their strongest effects on more educated workers. The authors argue that, in a country like Japan which has a dual labor market, there is an additional mechanism that affects mainly less educated workers. Namely, these workers are more likely to be trapped in the secondary sector if they graduate during a recession. We find a persistent, strong negative effect on earnings for less educated Japanese men, in contrast to no long-term effect for less educated American men; also, a substantial part of the effect for less educated Japanese men is attributed to the decreased probability of regular employment. The effect for the more educated group is more or less similar in both countries.
Gynapteromyia stricta Fedotova & Sidorenko 2005, comb. nov.
Creators: name: Jaschhof, Mathias
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Cecidomyiidae
Gynapteromyia
Gynapteromyia stricta

description: Gynapteromyia stricta (Fedotova & Sidorenko, 2005) comb. nov.
Haplusia stricta — Fedotova & Sidorenko 2005: 120, figs 132–134.
The holotype male, the only specimen known of H. stricta, seems to lack the antennae inasmuch as no antennal characters were mentioned in Fedotova & Sidorenko’s (2005) description. With both the number of flagellomeres and the kind of antennal sensilla unknown, it remains uncertain whether this species is correctly placed in Diallactiini. Assuming that the authors decided correctly regarding this, H. stricta should be classified in Gynapteromyia because the dorsomedial edges of the gonocoxites were described as extensively sclerotized (Fedotova & Sidorenko 2005: fig. 132). Also, the wing length of 2.3 mm indicated in the original description would suggest a body length of about 2.0 mm, which fits Gynapteromyia better than Johnsonomyia.
description: Published as part of Jaschhof, Mathias, 2016, A review of world Diallactiini (Diptera, Cecidomyiidae, Winnertziinae), with the description of six new genera and seventeen new species, pp. 201-244 in Zootaxa 4127 (2) on page 216, DOI: 10.11646/zootaxa.4127.2.1, http://zenodo.org/record/267022
Generalization of internal Density Functional Theory and Kohn-Sham scheme to multicomponent systems, and link with traditional DFT
Creators: name: Messud, Jeremie
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We generalize the recently developped "internal" Density Functional Theory (DFT) and Kohn-Sham scheme to multicomponent systems. We obtain a general formalism, applicable for the description of multicomponent self-bound systems (as molecules where the nuclei are treated explicitely, atomic nuclei and mix of 3He and 4He droplets), where the fundamental translational symmetry has been treated correctly. The main difference with traditional DFT is the explicit inclusion of center-of-mass correlations in the functional. A large part of the paper is dedicated to the application to molecules, which permits among other to clarify the approximations that underly traditional DFT.
description: 20 pages, 46 references
title: Gender und Kommunikation
Creators: name: Wesely, Sabine
Publisher: name: Hochschule Hannover
Year: 2016
Subjects: subject: 300 Sozialwissenschaften, Soziologie, Anthropologie

description: In diesem Artikel werden die Zusammenhänge zwischen Gender und Kommunikation erörtert, an Fallbeispielen und Untersuchungen erläutert und reflektiert. Der Begriff Gender beschreibt das soziale Geschlecht. Der Prozess der Kommunikation besteht aus Encodieren und Decodieren auf der nonverbalen, paraverbalen und verbalen Ebene. Dies wird unter anderem von Gender beeinflusst. Durch das Konzept des Doing Gender werden Wahrnehmungen, Kommunikationsverhalten sowie die statistischen Gegebenheiten und Rahmenbedingungen, in denen sich die Kommunikation abspielt, analysiert. Geschlechtstypische kommunikative Muster werden beschrieben und deren Grenzen durch Rahmenbedingungen reflektiert.
description: Arbeitspapier / Hochschule Hannover, Fakultät IV, 03/2010
Towards a Realistic F-theory GUT
Creators: name: Callaghan, James C.
name: King, Stephen F.
name: Leontaris, George K.
name: Ross, Graham G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider semi-local F-theory GUTs arising from a single E_8 point of local enhancement, leading to simple GUT groups based on E_6, SO(10) and SU(5) with SU(3), SU(4) and SU(5) spectral covers, respectively. Assuming the minimal Z_2 monodromy, we determine the homology classes and the associated spectra after flux breaking for each case. Our analysis includes the GUT singlets which have hitherto been ignored but which play a crucial role in phenomenology. Using these results we construct an E_6 based model that demonstrates, for the first time, that it is possible to construct a phenomenologically viable model which leads to the MSSM at low energies. The exotics that result from flux breaking all get a large mass when singlet fields acquire vacuum expectation values driven by D- and F-flatness. Due to the underlying GUT symmetry and the U(1)s descending from E_8, bare baryon- and lepton-number violating terms are forbidden up to and including dimension 5. As a result nucleon decay is naturally suppressed below present bounds. The mu-term is forbidden by the U(1) but is generated at the SUSY breaking scale when a further singlet field acquires a TeV scale vacuum expectation value, driven by the spontaneous breaking of the electroweak symmetry. After including the effect of flux and instanton corrections acceptable quark and charged lepton masses and mixing angles can be obtained. Neutrinos get a mass from the see-saw mechanism through their coupling to singlet neutrinos that acquire large Majorana mass as a result of the monodromy.
description: This version incorporates an improved discussion of the suppression of nucleon decay and the non-perturbative breaking of the U(1) symmetries
Gynapteromyia tasmanica Jaschhof, sp. nov.
Creators: name: Jaschhof, Mathias
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Cecidomyiidae
Gynapteromyia
Gynapteromyia tasmanica

description: Gynapteromyia tasmanica Jaschhof sp. nov.
Fig. 8A–G
Diagnosis. This is the only species of Gynapteromyia whose palpus is, at least in some individuals, longer than head height and whose claws are toothed. Male genitalic structures (Fig. A) are unusual in that the gonostylar tooth is thick-coniform and the tegmen apex is convex, without prominent corners (↓). The gonostylus is conspicuously long, slender, and markedly curved (↓).
Other characters. Male body length 1.8–1.9 mm. Head. Genal setae 3–5. Eye bridge 2–3(–4) ommatidia long dorsally. Scape with 2 setae. Neck of fourth flagellomere (Fig. C) 1.5 times longer than node; node with only basal microtrichia. Apical segment of labellum twice as broad as basal segment. Palpus (Fig. E) 0.9–1.2 times longer than head height, 4 segments, first to third segments with hair-shaped translucent sensilla. Wing length / width 2.5– 2.7 (Fig. B). Setae only on distal half of membrane. Costal break indistinct or absent. Vein btv without setae. CuA extending to wing margin. Genitalia (Fig. A). Gonocoxae: ventral emargination narrow; ventral bridge unsetose, with weak transverse suture; protrusions of medial bridges inconspicuous, rounded, with moderately dense short microtrichia (↓); anterior processes of apodemes about as long as distance separating them. Parameral apodemes large. Ejaculatory apodeme longer and thinner than in most other Gynapteromyia.
Female body length 2.1–2.2 mm. Head. Flagellomeres pear-shaped, with short necks (Fig. D), sensory hairs with hooded alveoli only on distal flagellomeres, microtrichia dense basally, very sparse elsewhere. Apical segment of labellum three times as broad as basal segment. Palpus 1.3 times longer than head height. Ovipositor as in Fig. F. Two sclerotized spermathecae, flattened, ovoid, with numerous tiny membranous windows (Fig. G). Etymology. The species epithet refers to the occurrence of this species in Tasmania.
Type material. Holotype. Male, Australia, Tasmania, Warra, Mt. Weld, 400 m, mixed forest, 22 Jan. 2002, Malaise trap, N. Doran & R. Bashford (in AMS). Paratypes. 6 males, 5 females, Warra Longterm Ecological Research (LTER) site, Manuka road, bird observation track, old-growth forest, 7 Dec. 2007 – 7 Jan. 2008, Malaise trap, M. & C. Jaschhof; female, same as previous site, 7 Dec. 2007, Malaise trap, R. Bashford (all in AMS).
description: Published as part of Jaschhof, Mathias, 2016, A review of world Diallactiini (Diptera, Cecidomyiidae, Winnertziinae), with the description of six new genera and seventeen new species, pp. 201-244 in Zootaxa 4127 (2) on pages 217-219, DOI: 10.11646/zootaxa.4127.2.1, http://zenodo.org/record/267022
Permanently Beta: Responsive Organization in the Internet Era
Creators: name: Neff, Gina
name: Stark, David C.
Publisher: name: Columbia University
Year: 2002
Subjects: subject: Economics
subject: Sociology
subject: FOS: Sociology
subject: Internet

description: How has the Internet influenced economic organization? Many approach this question strictly economically by examining the productivity gains from particular technological advances or the roles that dot-coms and other internet-based organizations play in the economy. The authors approach this question differently. They move away from a macro-social analysis and consider the co-evolution of new technologies and organizational forms. In other words, how has the process of technological change in the Internet era influenced the way we organize economic activities? In this paper, they discuss how information technologies foster the emergent design and user-driven design of websites and other online media, as well as products and organizations off-line. We also consider how to mitigate the social costs of these changes.
International retail banking: The Citibank Group
Creators: name: Rapp, William V.
Publisher: name: Columbia University
Year: 2000
Subjects: Economics
Commerce

description: This case for a large international bank with extensive global retail banking and financial services capabilities together with other cases support an initial research hypothesis that leading U.S. and Japan software users are very sophisticated in the ways they have integrated software into their business strategies. They use IT to institutionalize organizational strengths and capture tacit knowledge on an iterative basis. While Japanese users have relied heavily on customized and semi-customized software (Rapp 1995, 1998 and 1999), this is gradually changing towards a more selective use of package software managed via customized systems, including proprietary middleware. Conversely, U.S. firms, who have often relied more on packaged software, are customizing more especially the systems needed to integrate software packages into something more closely linked with the firm's business strategies, markets, and organizational structure. This is especially true when the company wishes to initiate a new product or service that advances the competitive envelope but for which no packaged software product yet exists since industry demand has not yet developed. Since Citibank (Citi) has often been on the cutting edge of new information technology for such new services, it has thus traditionally relied much less on packaged software than other U.S. firms.
Analysis of impacts of climate variability on malaria transmission in Sri Lanka and the development of an early warning system: Appendices
Creators: name: Zubair, Lareef M.
name: Connor, Stephen J.
name: Ward, M. Neil
name: Galapaththy, G. N. L.
name: Mahanama, Sarith
name: Faizal, H. M.
name: Yahiya, Zeenas
name: Siriwardhana, Manjula
name: Tennakoon, Upamala
name: Chandimala, Janaki
name: Razick, Siraj
name: Nawarathna, Badra
name: Shaman, Jeffrey L.
name: Ndiaye, Ousmane
name: Yang, Hyemin
Publisher: name: Columbia University
Year: 2010
Subjects: Climatic changes
Malaria
Malaria--Transmission

description: The annual summaries provide details and a chronology of the work.
title: Authentische Führung und Persönlichkeit
Creators: name: Wesely, Sabine
Publisher: name: Hochschule Hannover
Year: 2016
Subjects: subject: 150 Psychologie

description: In diesem Beitrag wird zunächst geklärt, was der Begriff Authentizität beinhaltet und was entsprechend authentische Führung bedeutet. Im dritten Kapitel geht es ausführlich um den Begriff der Persönlichkeit und ausgewählte Theorien der Persönlichkeitspsychologie. Das vierte Kapitel beschäftigt sich mit Professionalität und professioneller Führung. Anschließend werden die Ausführungen stärker auf die berufliche Praxis bezogen. Im fünften Kapitel werden zwei ausgewählte Persönlichkeitstests vorgestellt, die auch in Unternehmen im Recruitment von Führungskräften eingesetzt werden. Das sechste Kapitel befasst sich mit Konzepten und Techniken zur Persönlichkeitsentwicklung. Im siebten Kapitel wird noch einmal ein Fazit gezogen. Die in der Einleitung aufgeworfenen Fragen werden zusammenfassend beantwortet.
description: Arbeitspapier / Hochschule Hannover, Fakultät IV, 07-2012
Exploring the effect of hydroclimate variability on economic growth in Sub-Saharan Africa: A water security index
Creators: name: Brown, Casey
name: Domeisen, Daniela
name: Meeks, Robyn
name: Hunu, Kenneth
name: Yu, Winston
Publisher: name: Columbia University
Year: 2008
Subjects: subject: Science--Social aspects
subject: Ecology
subject: FOS: Biological sciences

description: Recent econometric studies provide evidence that climate variability in general, and rainfall variability in particular, has a negative effect on economic growth in the countries of Sub-Saharan Africa. In this study, we explore the factors that may explain why some countries are more resilient to climate variability than others. We use a range of data that is representative of the possible sources of resilience that are commonly hypothesized in the literature, including the state of water resources and water use, the inventory of infrastructure and the quality of institutions. Two analyses are undertaken. In the first, cross country regressions are used to explore aggregate associations of climate and resilience variables with economic growth. In the second, panel regressions for individual countries are performed with drought and flood indices. The results of these regressions are used to specify a water security index. The water security index is then analyzed through the prism of the resilience variables to draw inferences in regard to the sources of resilience that contribute to more water security. The results of these analyses are informative. Cross country regressions confirm the negative association between rainfall variability and economic growth within Sub-Saharan Africa. They also revealed strong associations between Foreign Direct Investment (FDI) and infrastructure inventory and economic growth. An index that accounts for climate variability and water storage (Seasonal Storage Index) is also strongly associated with both FDI and economic growth. The analysis of the Water Security Index revealed that more internal renewable water resources and irrigated agriculture as a percent of agricultural area were associated with more resilience to hydroclimate variability. Water storage was not a strong indicator of resilience, although when controlling for hydrologic variability with the SSI, it does become more important. There were no strong associations with institutions and weak positive associations with road density and phones.
Constraining the structure and formation of the Galactic bulge from a field in its outskirts. FLAMES-GIRAFFE spectra of about 400 red giants around (l,b)=(0°,-10°)
Creators: name: Uttenthaler, Stefan
name: Schultheis, Mathias
name: Nataf, David. M.
name: Robin, Annie C.
name: Lebzelter, Thomas
name: Chen, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The presence of two stellar populations in the Milky Way bulge has been reported recently. We aim at studying the abundances and kinematics of stars in the outer bulge, thereby providing additional constraints on models of its formation. Spectra of 401 red giant stars in a field at (l,b)=(0°,-10°) were obtained with FLAMES at the VLT. Stars of luminosities down to below the two bulge red clumps (RCs) are included. From these spectra we measure general metallicities, abundances of Fe and the alpha-elements, and radial velocities (RV) of the stars. These measurements as well as photometric data are compared to simulations with the Besancon and TRILEGAL models of the Galaxy. We confirm the presence of two populations among our sample stars: i) a metal-rich one at [M/H] ~+0.3, comprising about 30% of the sample, with low RV dispersion and low alpha-abundance, and ii) a metal-poor population at [M/H] ~-0.6 with high RV dispersion and high alpha-abundance. The metal-rich population could be connected to the Galactic bar. We identify this population as the carrier of the double RC feature. We do not find a significant difference in metallicity or RV between the two RCs, a small difference in metallicity being probably due to a selection effect. The RV dispersion agrees well with predictions of the Besancon Galaxy model, but the metallicity of the "thick bulge" model component should be shifted to lower metallicity by 0.2 to 0.3dex to well reproduce the observations. We present evidence that the metallicity distribution function depends on the evolutionary state of the sample stars, suggesting that enhanced mass loss preferentially removes metal-rich stars. We also confirm the decrease of α-element over-abundance with increasing metallicity.
description: 19 pages (excluding on-line table), 21 figures, accepted for publication in A&A
Pharmaceuticals: Takeda: Sustaining long-term advantage through information technology
Creators: name: Amari, Hiroshi
Publisher: name: Columbia University
Year: 1998
Subjects: Economics
Commerce

description: This case study of Takeda was completed under a three year research grant from the Sloan Foundation. The project's purpose is to examine in a series of case studies how US and Japanese firms who are recognized leaders in using information technology to achieve long-term sustainable advantage have organized and managed this process. While each case is complete in itself, each is part of this larger study.
Gynapteromyia temburong Jaschhof, sp. nov.
Creators: name: Jaschhof, Mathias
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Cecidomyiidae
Gynapteromyia
Gynapteromyia temburong

description: Gynapteromyia temburong Jaschhof sp. nov.
Fig. 9A–C
Diagnosis. Gynapteromyia temburong is another Gynapteromyia with furcate translucent sensilla (↓) on
flagellomeres (Fig. A) and palpi (Fig. B), but the sensilla are much larger in this species than in G. f u rc a t a (see above). Male genitalic characters specific to G. temburong are as follows (Fig. A). The tegmen, which is only slightly tapered towards the apex, has a membranous, slightly bilobed outgrowth ventroapically (↓), a structure not known from other Gynapteromyia. Of the gonocoxites, the medial bridges have virtually no protrusions and the ventral emargination is conspicuously narrow. Females of G. temburong are unknown.
Other male characters. Body length 1.3 mm. Head. Genal setae 4. Eye bridge with 0–1 ommatidium dorsally. Scape with 4 setae. Maximally 10 flagellomeres retained. Neck of fourth flagellomere (Fig. A) 1.5 times longer than node; node subglobose, with only a few sensory hairs with hooded alveoli ventrally, basal setae longer than individual flagellomere, 2 large furcate sensilla each with up to 4 tines, microtrichia only basally. Palpus (Fig. B) single-segmented, setae very sparse, translucent sensilla numerous, with 2–4 tines. Wing length / width 2.7. Membrane setose except for a stripe below proximal portion of R5 and btv. Vein btv setose. CuA fading out before wing margin. Legs with narrow scales in addition to setae. Most tarsi and all acropods lost. Genitalia (Fig. C). Gonocoxae: ventral emargination deep; ventral bridge unsetose, with indistinct transverse suture; anterior processes of apodemes as long as distance separating them. Gonostylus twice as long as wide, slightly bent, slightly tapered towards apex, apical tooth slender. Parameral apodemes small. Ejaculatory apodeme thin.
Etymology. The name refers to the species’ type locality, Ulu Temburong National Park in Brunei.
Type material. Holotype. Male, Brunei, Ulu Temburong National Park, Kuala Belalong Field Studies Centre, 26 Jan.–15 Feb. 2015, lowland mixed dipterocarp forest, Malaise trap (D afternoon), D. Kaspřák & M. Mantič (in UBDC).
description: Published as part of Jaschhof, Mathias, 2016, A review of world Diallactiini (Diptera, Cecidomyiidae, Winnertziinae), with the description of six new genera and seventeen new species, pp. 201-244 in Zootaxa 4127 (2) on page 219, DOI: 10.11646/zootaxa.4127.2.1, http://zenodo.org/record/267022
On Some Multicolor Ramsey Numbers Involving $K_3+e$ and $K_4-e$
Creators: name: Shetler, Daniel S.
name: Wurtz, Michael A.
name: Radziszowski, Stanisław P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05C55

description: The Ramsey number $R(G_1, G_2, G_3)$ is the smallest positive integer $n$ such that for all 3-colorings of the edges of $K_n$ there is a monochromatic $G_1$ in the first color, $G_2$ in the second color, or $G_3$ in the third color. We study the bounds on various 3-color Ramsey numbers $R(G_1, G_2, G_3)$, where $G_i \in \{K_3, K_3+e, K_4-e, K_4\}$. The minimal and maximal combinations of $G_i$'s correspond to the classical Ramsey numbers $R_3(K_3)$ and $R_3(K_4)$, respectively, where $R_3(G) = R(G, G, G)$. Here, we focus on the much less studied combinations between these two cases. Through computational and theoretical means we establish that $R(K_3, K_3, K_4-e)=17$, and by construction we raise the lower bounds on $R(K_3, K_4-e, K_4-e)$ and $R(K_4, K_4-e, K_4-e)$. For some $G$ and $H$ it was known that $R(K_3, G, H)=R(K_3+e, G, H)$; we prove this is true for several more cases including $R(K_3, K_3, K_4-e) = R(K_3+e, K_3+e, K_4-e)$. Ramsey numbers generalize to more colors, such as in the famous 4-color case of $R_4(K_3)$, where monochromatic triangles are avoided. It is known that $51 \leq R_4(K_3) \leq 62$. We prove a surprising theorem stating that if $R_4(K_3)=51$ then $R_4(K_3+e)=52$, otherwise $R_4(K_3+e)=R_4(K_3)$.
description: 12 pages
Experimental study of deformation and microcracking in human cortical bone
Creators: name: Ebacher, Vincent
Publisher: name: University of British Columbia
Year: 2015

description: Human bone is a complex biological material with up to seven levels of hierarchical structure. Due to this complexity, it is still not fully understood how the various structures contribute to the macroscopic mechanical response. Such understanding is important to assess the mechanical contributions of the bone material to whole bone fractures. It is well known that microcracking is associated with bone’s inelastic deformation and contributes to its resistance to fracture. Multiple microcracks suggest control over their development. Yet, the structure – microcracking interactions in cortical bone, particularly at the lamellar and Haversian systems levels, are still unclear. Following a qualitative, structure – mechanical function relations approach, the present dissertation provides further insight into how bone resists fracture by distributed microcracking. This was achieved through a detailed study of bone’s deformation and fracture processes using mechanical testing on human cadaver bones and a combination of microscopy techniques, including laser scanning confocal microscopy, to characterize the structure – microcracking relations. Particular interest was given to compression and bending, two loading modes involved in falls resulting in hip fractures. Haversian bone derived part of its fracture resistance through microcracking largely controlled by the concentric lamellae and underlying fibrillar organisation surrounding each Haversian canal. Multiple microcracks developed stably within the osteonal wall due to different fibrillar orientation in each lamella. Such process happened to most osteons resulting in well-distributed damage, hence providing inelastic deformation to the tissue. Haversian bone’s resistance to fracture would thus depend on its intact lamellar structure. Changes in number and organisation of the lamellae would likely alter bone’s ability to control microcracks and may lead to bone fragility. Based on a tibia study, long bones’ fracture resistance in bending was found to be linked to Haversian bone’s behavior. As a result of post-yield strain redistribution associated with tensile and compressive microcracking, bone’s compressive behavior was also found to play an important role in the bending response. Directly applying fundamental research to the clinical field, a preliminary analysis of the superior cortex of fractured femoral necks retrieved from patients revealed compressive microcracking. Such evidence emphasizes the importance of bone’s hierarchical structure in hip fracture.
Non-variable TeV emission from the extended jet of a blazar in the stochastic acceleration scenario: the case of the hard TeV emission of 1ES 1101-232
Creators: name: Yan, Dahai
name: Zeng, Houdun
name: Zhang, Li
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The detections of X-ray emission from the kiloparsec-scale jets of blazars and radio galaxies may imply the existence of high energy electrons in these extended jets, and these electrons could produce high energy emission through inverse Compton (IC) process. In this paper we study the non-variable hard TeV emission from a blazar. The multi-band emission consists of two components: one is the traditional synchrotron self-Compton (SSC) emission from the inner jet, and the other is the emission produced via SSC and IC scattering of cosmic microwave background (CMB) photons (IC/CMB) and extragalactic background light (EBL) photons (IC/EBL) by relativistic electrons in the extended jet under the stochastic acceleration scenario. Such a model is applied to 1ES 1101-232. The results indicate that (1) the non-variable hard TeV emission of 1ES 1101-232 can be reproduced well, which is dominated by IC/CMB emission from the extended jet, using three characteristic values of Doppler factor ($δ_{\rm D}=5,10,15$) for the TeV emitting region in the extended jet; and (2) in the cases of $δ_{\rm D}=15$ and 10, the physical parameters can achieve the equipartition (or quasi-equipartition) between the relativistic electrons and the magnetic field; In contrast, the physical parameters largely deviate from the equipartition for the case of $δ_{\rm D}=5$. It is therefore concluded that the TeV emission region of 1ES 1101-232 in the extended jet should be moderately or highly beamed.
description: 8 pages, 4 figures, 2 tables, accepted for publication in MNRAS
Editorische Notiz
Creators: name: Ihle, Holger
Publisher: name: Journal für Sportkommunikation und Mediensport
Year: 2018

description: Das Journal für Sportkommunikation und Mediensport (JSKMS) liegt in seiner ersten Ausgabe vor. Die Website des Journals ist im Oktober 2015 online gestellt worden. Nach einigen kleineren und größeren Anlaufschwierigkeiten wurden die Beiträge der Jahre 2015 und 2016 in einer Doppelnummer (als erster Jahrgang) zusammengefasst. In der Rubrik Essay sind die Keynotes der ersten Jahrestagung der DGPuK-Ad-hoc-Gruppe „Mediensport & Sportkommunikation“ versammelt. Sie geben einen Überblick zum Themengebiet und Forschungsfeld, mit dem sich Beiträge, die in JSKMS publiziert werden, befassen.
description: Journal für Sportkommunikation und Mediensport, Bd. 1 Nr. 1-2 (2016)
Sportkommunikation und Mediensport im Wandel
Creators: name: Vowe, Gerhard
name: Dohle, Marco
Publisher: name: Journal für Sportkommunikation und Mediensport
Year: 2018

description: Ziel des Beitrages ist, das Profil eines Programms der Sportkommunikationsforschung zu entwickeln. Dafür werden drei Fragen beantwortet: 1. Warum und wozu sollte Sport aus kommunikationswissenschaftlicher Perspektive untersucht werden? Sportkommunikationsforschung sollte die Ursachen und Folgen medialer Sportkommunikation untersuchen. Im Kern der bisherigen Forschung stehen die Ursachen. Mehr Gewicht sollte jedoch darauf gelegt werden, die Folgen medialer Sportkommunikation festzustellen und damit einen kommunikationswissenschaftlichen Beitrag zur Erklärung der Unterschiede und Veränderungen im Sport selbst zu leisten. 2. Was sollte aus kommunikationswissenschaftlicher Sicht im Hinblick auf Sport vordringlich untersucht werden? In der Forschung sollte der Schwerpunkt auf dem strukturellen Wandel der Sportkommunikation in der Online-Welt liegen. Insbesondere ist empirisch zu prüfen, wie sich die sechs grundlegenden Tendenzen des strukturellen Wandels der Kommunikation im Sportbereich niederschlagen: Pluralisierung der Kommunikationsakteure, Differenzierung der Kommunikationsinhalte, Hybridisierung der Kommunikationsmodi, Digitalisierung der Kommunikationstechniken, Dynamisierung der Kommunikationsprozesse und Globalisierung der Kommunikationsräume. 3. Wie sollte Sport aus kommunikationswissenschaftlicher Sicht untersucht werden? Sportkommunikationsforschung sollte methodisch plural angelegt werden, sich aber an den Prinzipien des Kritischen Rationalismus orientieren und nicht normativ kontaminiert sein. Außerdem sollte die Forschung interdisziplinär und reflexiv angelegt sein. Da Sport zunehmend ein globales Phänomen mit grenzüberschreitenden Strukturen ist, sollte Sportkommunikationsforschung zudem international ausgerichtet sein.
description: Journal für Sportkommunikation und Mediensport, Bd. 1 Nr. 1-2 (2016)
The Global Age: From a Skeptical South to a Fearful North
Creators: name: Bhagwati, Jagdish N.
Publisher: name: Columbia University
Year: 1996
Subjects: Economics
International relations

description: Excerpt from the lecture: "I am both honoured and pleased by the invitation to give the Raul Prebisch Lecture today. The honour comes from recalling an exceptional man. Prebisch was an eminent scholar and a prominent actor on the policy stage, a preeminent figure who carried his great stature with charm, grace and wit. The honour is the greater because of where I give the Lecture. The emergence of the new South Africa under Prime Minister Mandela, wedded to the rule of law and a commitment to producing racial and ethnic harmony in a world pulling in more dissonant and destructive directions, has been a ray of hope for all of mankind."
Medialisierung im Spitzensport: eine Erfolgsgeschichte?
Creators: name: Heinecke, Stephanie
Publisher: name: Journal für Sportkommunikation und Mediensport
Year: 2018

description: Der Beitrag fragt nach Medialisierung im Spitzensport. Anhand der Sportarten Badminton, Beach-Volleyball, Biathlon, Moderner Fünfkampf und Dressurreiten wird aufgezeigt, welche Anpassungen an die Logik des Fernsehens vorgenommen wurden. Die Erkenntnisse stützen sich auf eine Dokumentenanalyse und Experteninterviews für den Zeitraum zwischen 1984 und 2014. Es lassen sich gemeinsame Strategien erkennen, etwa die Etablierung serieller Wettbewerbe, die Professionalisierung der Medienarbeit, Personalisierung oder eine Straffung des Ablaufs. Ebenso finden sich Medialisierungsmaßnahmen, die individuell auf die jeweilige Sportart zugeschnitten sind, etwa die Einführung neuer Formate im Biathlon oder die Zusammenlegung von Laufen und Schießen zum Combined Event im Modernen Fünfkampf. Anhand von Daten der AGF/GfK Fernsehforschung wird überprüft, ob diese Maßnahmen zu einer erhöhten Fernsehpräsenz geführt haben. Während Biathlon und Beach-Volleyball die Sendedauer deutlich ausbauen konnten, bleiben die Auswirkungen für Badminton und Modernen Fünfkampf eher gering. Für Dressurreiten liegt sogar eine gegenteilige Entwicklung vor, die Sportart hat an Präsenz im traditionellen Fernsehen verloren. This article looks for impacts of mediatization on professional sports. Research results for Badminton, Beach Volleyball, Biathlon, Modern Pentathlon and Dressage Riding show adaptations to the media logic. The findings are based both on document analysis and expert interviews for the time between 1984 and 2014. They reveal some common strategies, for example the introduction of serial competitions, the professionalization of federations' media activities, personalization, and the improvement of competition schedules. Additionally, there are individual measures of mediatization for all sports. In Biathlon, new and telegenic competition formats have been established. In Modern Pentathlon, the disciplines running and shooting have been merged to the so called Combined Event. In a second step, this article shows these measures' effects on broadcasting time in the German market. Data from AGF/GfK shows an increase for Biathlon and Beach Volleyball. There were only minor effects for Badminton and Modern Pentathlon, even though both sports were able to improve their presentation. Dressage Riding even shows a trend reversal with a clear drop of broadcasting time in traditional TV.
description: Journal für Sportkommunikation und Mediensport, Bd. 1 Nr. 1-2 (2016)
Teacher effects on social/behavioral skills in early elementary school
Creators: name: Jennings, Jennifer L.
name: DiPrete, Thomas A.
Publisher: name: Columbia University
Year: 2009
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Psychology
subject: FOS: Psychology
subject: Education, Elementary

description: Though many recognize that social and behavioral skills play an important role in educational stratification, no studies have attempted to estimate teachers’ effects on these outcomes. Using data from the Early Childhood Longitudinal Study–Kindergarten Cohort (ECLS–K), we estimate teacher effects on social and behavioral skills as well as on academic achievement. Teacher effects on social and behavioral skill development are sizeable, and are somewhat larger than teacher effects on academic development. Because—as we show—social and behavioral skills have a positive effect on the growth of academic skills in the early elementary grades, the teachers who are good at enhancing social and behavioral skills provide an additional indirect boost to academic skills in addition to their direct teaching of academic skills. Like previous studies we find that observable characteristics of teachers and the instructional approaches utilized in their classrooms are weak predictors of teacher effects. However, our results suggest that the teachers who produce better than average academic results are not always the same teachers who excel in enhancing social and behavioral skills.
Tekoälyn varhaishistoriaa
Creators: name: Roinila, Markku
Publisher: name: Zenodo
Year: 2019
Subjects: Tekoäly, Laskukoneet, Binäärilaskenta, Artificial intelligence, spirituaaliset automaatit

description: Nämä ovat kalvot esityksestäni Suomen filosofisen yhdistyksen Tekoäly-kollokviosta Tampereella tammikuussa 2019. Niissä esitellään varhaisia tekoälyyn liittyviä projekteja 1600/1700-luvulta, mukaanlukien laskukoneet, universaalikielet, binäärilaskenta ja spirituaaliset automaatit.
Tagungsbericht: 8th Summit on Communication and Sport
Creators: name: Nieland, Jörg-Uwe
Publisher: name: Journal für Sportkommunikation und Mediensport
Year: 2018

description: Tagungsbericht 8th Summit on Communication and Sport, 06.-08.03.2015, University of North Carolina, Charlotte, NC, USA.
description: Journal für Sportkommunikation und Mediensport, Bd. 1 Nr. 1-2 (2016)
Field-effect mobility enhanced by tuning the Fermi level into the band gap of Bi2Se3
Creators: name: Wei, Peng
name: Wang, Zhiyong
name: Liu, Xinfei
name: Aji, Vivek
name: Shi, Jing
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: By eliminating normal fabrication processes, we preserve the bulk insulating state of calcium-doped Bi2Se3 single crystals in suspended nanodevices, as indicated by the activated temperature dependence of the resistivity at low temperatures. We perform low-energy electron beam irradiation (<16 keV) and electrostatic gating to control the carrier density and therefore the Fermi level position in the nanodevices. In slightly p-doped Bi2-xCaxSe3 devices, continuous tuning of the Fermi level from the bulk valence band to the band-gap reveals dramatic enhancement (> a factor of 10) in the field-effect mobility, which suggests suppressed backscattering expected for the Dirac fermion surface states in the gap of topological insulators.
Development of a software effort and cost estimation tool based on FEMSEC
Creators: name: Shen, Jialin
Publisher: name: University of Calgary
Year: 2008

description: Bibliography: p. 114-123
description: A software cost estimation model is essential for accurate estimation of software effort and cost. An accurate estimation is one of most important factors for projects' success as it provides project managers with key information for project planning and control. In the research of literature, a number of cost estimation models have been proposed. However, existing models and techniques are not accurate enough for estimating complex real world projects in software engineering based on literature review. This thesis systematically reviews different software effort and cost estimation models and technologies. Theoretical analyses and empirical experiments show that the persistent problems in software effort and cost estimation is not only a technical one, but also a fundamental theoretical one, where new theories and mathematical models still need to be sought, such as what dominates software development effort in a large group? How labour is traded with time in a project setting? What is the optimal organization form of a large software project? In this thesis, the models COCOMO II and FEMSEC are comparatively studied, and the ways to combine them are analyzed. It's found that in the former, the approach to calculate the range of estimates is questionable because the team size factor is not considered. The FEMSEC model reveals that team size is one of most important factors in a software project organization and its estimation, because the form of interpersonal coordination fundamentally impacts project efforts and outcomes. Based on these analyses, it's found that the way to get more accurate estimation in COCOMO II, especially for large-scale software projects, may be improved on the basis of the FEMSEC theory. A set of experiments are conducted to validate the hypothesis. An Integrated Software Engineering Cost Estimation (ISECE) tool is developed based on FEMSEC and the results of case studies. This work demonstrates that the ISECE tool with underpinning theories of FEMSEC, as well as the integration of FEMSEC with COCOMO II, can significantly improve software effort and cost estimations in software enineering.
Tagungsbericht: Social Media and Sports Day 2015
Creators: name: Nieland, Jörg-Uwe
Publisher: name: Journal für Sportkommunikation und Mediensport
Year: 2018

description: Tagungsbericht Social Media and Sports Day 2015, 29.05.2015, Eberhard-Karls-Universität, Tübingen, Deutschland
description: Journal für Sportkommunikation und Mediensport, Bd. 1 Nr. 1-2 (2016)
Bank underwriting of corporate bonds: Evidence from Japan after the financial system reform of 1993
Creators: name: Hamao, Yasushi
name: Hoshi, Takeo
Publisher: name: Columbia University
Year: 2000
Subjects: Economics
Commerce

description: In 1993, the corporate bond primary market in Japan underwent a major change. The Financial System Reform Act allowed banks to enter the underwriting business by setting up securities subsidiaries. This paper analyzes yield differentials between issues underwritten by bank subsidiaries and those underwritten by securities houses. By estimating a regression model with correction for self-selection bias, we can distinguish between several hypotheses concerning the effect of bank underwriting of corporate bonds on their yields. We show that investors discount corporate bonds underwritten by bank-owned subsidiaries because they suspect conflict of interest. Bank-owned subsidiaries, on the other hand, try to avoid this conflict by underwriting bonds intended for institutional investors and bonds issued by firms with weak main bank ties. While investors' suspicions of conflict of interest may put bank-owned subsidiaries at a disadvantage with respect to incumbent security houses, this study suggests that an aggressive entry strategy on the part of bank-owned subsidiaries has offset the disadvantage so far. In light of the recent repeal of the Glass Steagall Act, these findings will be of particular interest to observers of the changing nature of the securities business in the United States.
Detecting a Majorana-Fermion Zero Mode Using a Quantum Dot
Creators: name: Liu, Dong E.
name: Baranger, Harold U.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose an experimental setup for detecting a Majorana zero mode consisting of a spinless quantum dot coupled to the end of a p-wave superconducting nanowire. The Majorana bound state at the end of the wire strongly influences the conductance through the quantum dot: Driving the wire through the topological phase transition causes a sharp jump in the conductance by a factor of 1/2. In the topological phase, the zero temperature peak value of the dot conductance (i.e. when the dot is on resonance and symmetrically coupled to the leads) is e^2/2h. In contrast, if the wire is in its trivial phase, the conductance peak value is e^2/h, or if a regular fermionic zero mode occurs on the end of the wire, the conductance is 0. The system can also be used to tune Flensberg's qubit system [PRL 106, 090503 (2011)] to the required degeneracy point.
description: 5 pages, 4 figures