991 resultados para Zasius, Ulrich, 1461-1536
Resumo:
This is a revised text of the third lecture of the 2014 public lecture series, "The Path Toward a Global Civilzation" hosted by the Institute of Oriental Philosophy on October 2 in Tokyo. Dr Desha is a research principal of the Australian team at the Natural Edge Project which published Factor 5: Transforming the Global Economy through 80% Increase in Resource Productivity (2009) in collaboration with Dr Ernst Ulrich von Weizsacker.
Resumo:
Homozygosity has long been associated with rare, often devastating, Mendelian disorders1, and Darwin was one of the first to recognize that inbreeding reduces evolutionary fitness2. However, the effect of the more distant parental relatedness that is common in modern human populations is less well understood. Genomic data now allow us to investigate the effects of homozygosity on traits of public health importance by observing contiguous homozygous segments (runs of homozygosity), which are inferred to be homozygous along their complete length. Given the low levels of genome-wide homozygosity prevalent in most human populations, information is required on very large numbers of people to provide sufficient power3, 4. Here we use runs of homozygosity to study 16 health-related quantitative traits in 354,224 individuals from 102 cohorts, and find statistically significant associations between summed runs of homozygosity and four complex traits: height, forced expiratory lung volume in one second, general cognitive ability and educational attainment (P < 1 × 10−300, 2.1 × 10−6, 2.5 × 10−10 and 1.8 × 10−10, respectively). In each case, increased homozygosity was associated with decreased trait value, equivalent to the offspring of first cousins being 1.2 cm shorter and having 10 months’ less education. Similar effect sizes were found across four continental groups and populations with different degrees of genome-wide homozygosity, providing evidence that homozygosity, rather than confounding, directly contributes to phenotypic variance. Contrary to earlier reports in substantially smaller samples5, 6, no evidence was seen of an influence of genome-wide homozygosity on blood pressure and low density lipoprotein cholesterol, or ten other cardio-metabolic traits. Since directional dominance is predicted for traits under directional evolutionary selection7, this study provides evidence that increased stature and cognitive function have been positively selected in human evolution, whereas many important risk factors for late-onset complex diseases may not have been.
Resumo:
Copper(I) complexes with {Cu(μ2-S)N}4 and {Cu(μ3-S)N}12 core portions of butterfly-shaped or double wheel architectures have been isolated in the reaction of Cu(I) with the Schiff base ligand C6H4(CHNC6H4S)2, aiso-abtâ, under different conditions. View the MathML source containing the tetranuclear electroneutral complex View the MathML source is formed by the reaction of CuI in acetonitrilic solution and recrystallization from DMF, whereas View the MathML source containing dodecanuclear View the MathML source wheels is accessible starting from CuBF4. Complexes 2 and 4 represent the first examples of cyclic complexes with the same overall stoichiometry but different ring sizes. The ligand induces two different coordination environments around copper(I) by switching between μ2- and μ3-sulfur bridging modes.
Resumo:
The boxicity of a graph G, denoted box(G), is the least integer d such that G is the intersection graph of a family of d-dimensional (axis-parallel) boxes. The cubicity, denoted cub(G), is the least dsuch that G is the intersection graph of a family of d-dimensional unit cubes. An independent set of three vertices is an asteroidal triple if any two are joined by a path avoiding the neighbourhood of the third. A graph is asteroidal triple free (AT-free) if it has no asteroidal triple. The claw number psi(G) is the number of edges in the largest star that is an induced subgraph of G. For an AT-free graph G with chromatic number chi(G) and claw number psi(G), we show that box(G) <= chi(C) and that this bound is sharp. We also show that cub(G) <= box(G)([log(2) psi(G)] + 2) <= chi(G)([log(2) psi(G)] + 2). If G is an AT-free graph having girth at least 5, then box(G) <= 2, and therefore cub(G) <= 2 [log(2) psi(G)] + 4. (c) 2010 Elsevier B.V. All rights reserved.
Resumo:
I denna pro gradu avhandling undersöker jag Jokela-fallets diskursiva efterdyningar utgående från ett moralpanikperspektiv. Syftet är att se huruvida reaktionerna på och förklaringarna till skolmassakern i Jokela kan anses präglas av moralpanik, samt vilka andra förklaringsmodeller som präglade den omfattande Jokela-debatten. Avhandling grundar sig på en kvalitativ diskursanalys av förklaringsmodellerna så som de presenterades i opinionstexter och insändare i Helsingin Sanomat hösten 2007. Jag analyserar hur den medierade Jokela-debatten utvecklades och formade perceptionerna om skolskjutningar, ungdomar och det finländska samhällstillståndet i stort. Jokela-fallet väckte starka reaktioner och rädsla. Man försökte förstå och förklara orsakerna till skottdramat. Flera olika förklaringsmodeller presenterades i medierna; en oro över ungdomens mentala hälsa och mobbning, webbens och populärkulturens farliga inflytande, det hårdnade samhällsklimatet och en försvagad välfärd, också den bristfälliga vapenlagstiftningen kritiserades. Den gemensamma nämnaren var att Jokela-fallet uppfattades som en indikator på hela samhällets tillstånd där en gemensam värdegrund och moral håller på att erodera. Mitt teoretiska perspektiv grundar sig främst på moralpanikteorier av Stanley Cohen och Chas Critcher som jag kopplar ihop med Ulrich Becks teori om risksamhället och Emile Durkheims anomiteori. Det här speglar jag mot bland annat Hille Koskelas forskning om rädslans kultur och trygghetssamhället, samt jämför med amerikansk forskning om skolskjutningar. Jokela-debatten formades främst av två dominerande diskurser: a) en rationaliseringsdiskurs som kännetecknas av att man försöker förklara Jokela-fallet genom förnuftsmässiga och logiska resonemang genom att peka på olika samhällsaspekter, b) en risk- och kontrolldiskurs som kännetecknas av moralpaniktendenser främst i form av oro över ungdomar, internet och försvagade samhällsnormer, samt krav på ökad social kontroll och reglering för att säkra trygghet och ordning i samhället. Jokela-fallet var inte ett klassiskt moralpanikfall, men fyllde många av kriterierna för moralpanik. Jokela-debatten uttryckte en rädslans kultur som genomsyrar dagens risksamhälle och som legitimerar ökad riskhantering och social kontroll, som försvar mot de hot och problem som samhället kollektivt upplever. Det ställdes krav på mera social kontroll och reglering på grund av upplevda hot mot samhällets normer och en försvagad moral, vilket är ett uttryck för moralpanik. Jokela-fallets diskursiva efterdyningar visar att tryggheten har blivit ett moraliskt imperativ. Trygghet har blivit något vi förutsätts eftersträva och som vi är färdiga att betala ett allt högre pris för, både mätt i pengar och i frihet.
Resumo:
Introduction. We estimate the total yearly volume of peer-reviewed scientific journal articles published world-wide as well as the share of these articles available openly on the Web either directly or as copies in e-print repositories. Method. We rely on data from two commercial databases (ISI and Ulrich's Periodicals Directory) supplemented by sampling and Google searches. Analysis. A central issue is the finding that ISI-indexed journals publish far more articles per year (111) than non ISI-indexed journals (26), which means that the total figure we obtain is much lower than many earlier estimates. Our method of analysing the number of repository copies (green open access) differs from several earlier studies which have studied the number of copies in identified repositories, since we start from a random sample of articles and then test if copies can be found by a Web search engine. Results. We estimate that in 2006 the total number of articles published was approximately 1,350,000. Of this number 4.6% became immediately openly available and an additional 3.5% after an embargo period of, typically, one year. Furthermore, usable copies of 11.3% could be found in subject-specific or institutional repositories or on the home pages of the authors. Conclusions. We believe our results are the most reliable so far published and, therefore, should be useful in the on-going debate about Open Access among both academics and science policy makers. The method is replicable and also lends itself to longitudinal studies in the future.
Resumo:
Core-level spectroscopic studies suggest that cuprates nominally supposed to contain Cu3+ions are likely to have the excess positive charge on oxygen instead, giving rise to O-type species (oxygen holes)
Resumo:
Processing maps developed on the basis of the Dynamic Materials Model provide valuable information that might help the metal working industry in solving problems related to workability and microstructural control in commercial alloys. In this research, the processing maps for an as-cast AZ31 magnesium alloy are presented. The results are validated via microstructural observations, clearly delineating safe and unsafe regimes for further process design of this alloy.
Resumo:
Tutkimuksessa tarkastellaan Ronald Inglehartin hiljaisen arvovallankumouksen teoriaa refleksiivisen modernisaatioteorian piiristä johdettujen vaihtoehtoisten yhteiskunnallisen epävarmuuden kasvuun liitty-vien selitysmallien kautta. Inglehartin teoria antaa ymmärtää, että modernisaation myötä käynnissä on ollut hiljainen prosessi, jossa aineellisen hyvinvoinnin ja turvallisuuden parissa kasvavat sukupolvet omaksuvat edeltäjiään jälkimaterialistisempia arvoja. Tutkimuksessa johdetaan Inglehartin teorialle kaksi rinnakkaista selitysmallia, jotka perustuvat Ulrich Beckin ja Anthony Giddensin modernisaatioteoretisoin-teihin. Ensimmäisessä mallissa Inglehartin määrittämää jälkimaterialismia pyritään selittämään Giddensin teorian avulla modernisaation myötä tapahtuvan traditioiden purkautumisen myötä yksilötasolla ilmenevän uudenlaisen autonomian kokemisen kautta, jolloin jälkimaterialismin oletetaan olevan yleisempää sellais-ten ihmisten keskuudessa, jotka traditioista irtautuessaan kykenevät onnistuneeseen itsereflektioon. Empiiristä mallinnusta varten koostetaan faktorianalyysillä kaksi Giddensin teoriaan perustuvaa jälkima-terialismia selittävää muuttujaa, joiden välinen yhteisvaikutus on tilastollisen analyysin keskiössä. Toinen malli perustuu Beckin riskiyhteiskuntateoretisointiin ja perustuu pitkälle kehittyneen modernisaa-tion mukanaan tuomien uudenlaisten riskien ja epävarmuuksien kokemiseen ja olettaa, että huolestunei-suus uudenlaisten riskien ja epävarmuuksien suhteen näkyy suurempana materialististen arvojen omak-sumisena. Selitysmalleja testataan empiirisesti ordinaalisella regression- sekä kovarianssianalyysillä World Values Survey 2005:n, European Values Study 2008:n sekä saksalaisen Political Attitudes, Political Participati-on and Voter Conduct in United Germany –surveyn vuosien 1994-2002 aineistoilla. Empiirisen analyysin perusteella kumpaakaan mallia ei kuitenkaan voida näyttää toteen käytettävissä olevilla aineistoilla. Tut-kimuksessa pyritään siten vielä problematisoimaan tutkimusasetelman operationalisointiin liittyviä on-gelmakohtia survey-aineistojen suhteen mahdollisten jatkotutkimuksien kannalta.
Resumo:
Heteronuclear multiple-quantum coherence relaxation rate are calculated for the individual transitions of the S spin in an AIS nuclear spin system assuming that the heteronucleus (S spin) has relaxation contributions from both intramolecular dipole-dipole and chemical shift anisotropy relaxation. The individual multiplet components of the heteronuclear zero- and double-quantum coherences are shown to have different transverse relaxation rates. The cross-correlation between the two relaxation mechanisms is shown to be the dominant cause of the calculated differential line broadening. Experimental data are presented using as an example a uniformly 15N labelled sample of human epidermal growth factor.
Resumo:
This study approaches the problem of poverty in the hinterlands of Northeast Brazil through the concept of structural violence, linking the environmental threats posed by climate change, especially those related to droughts, to the broader social struggles in the region. When discussions about potentials and rights are incorporated into the problematic of poverty, a deeper insight is obtained regarding the various factors behind the phenomenon. It is generally believed that climate change is affecting the already marginalized and poor more than those of higher social standing, and will increasingly do so in the future. The data for this study was collected during a three month field work in the states of Pernambuco and Paraíba in Northeast Brazil. The main methods used were semi-structured interviews and participant observation, including attending seminars concerning climate change on the field. The focus of the work is to compare both layman and expert perceptions on what climate change is about, and question the assumptions about its effects in the future, mainly that of increased numbers of ‘climate refugees’ or people forced to migrate due to changes in climate. The focus on droughts, as opposed to other manifestations of climate change, arises from the fact that droughts are not only phenomena that develop over a longer time span than floods or hurricanes, but is also due to the historical persistence of droughts in the region, and both the institutional and cultural linkages that have evolved around it. The instances of structural violence that are highlighted in this study; the drought industry, land use, and the social and power relations present in the region, including those between the civil society, the state and the private agribusiness sector, all work against a backdrop of symbolic and moral realms of value production, where relations between the different actors are being negotiated anew with the rise of the climate change discourse. The main theoretical framework of the study consists of Johan Galtung’s and Paul Farmer’s theory of structural violence, Ulrich Beck’s theory of the risk society, and James Scott’s theory of everyday peasant resistance.
Resumo:
Analysis of gas-particle nozzle flow is carried out with attention to the effect of dust particles on the vibrational relaxation phenomena and consequent effects on the gain of a gasdynamic laser. The phase nonequilibrium between the gas mixture and the particles during the nozzle expansion process is taken into account simultaneously. The governing equations of the two-phase nozzle flow have been transformed into similar form, and general correlating parameters have been obtained. It is shown from the present analysis that the particles present in the mixture affect the optimum gain obtainable from a gasdynamic laser adversely, and the effect depends on the size and loading of the particles in the mixture.
Resumo:
The reactivation kinetics of passivated Mg acceptors in hydrogenated InP during unbiased annealing of a Schottky diode is reported. The reactivation is found to slow down gradually with annealing time and this phenomenon is attributed to substantial retrapping of H at the acceptor sites. It is found from the concentration profiles and the kinetics data that the reactivation is most likely limited by H2 molecule formation processes for longer annealing times; for shorter annealing times, contributions from in-diffusion of H also become significant. The diffusion of H during the initial period follows an Arrhenius relation with an activation energy for the effective diffusion coefficient of 1.13±0.10 eV. In the H2 formation regime, the reactivation is thermally activated with an activation energy for the annealing parameter of 1.71±0.10 eV. The H2 formation-limited regime of reactivation occurs sooner as the annealing temperature is increased.