109,201 research outputs found
H. Lechner, Gesetz zur Aenderung des Gesetzes iiber das Bundesverfassungsgericht
No full textH. Lechner, Gesetz zur Aenderung des Gesetzes iiber das Bundesverfassungsgericht. In: Revue internationale de droit comparé. Vol. 11 N°1, Janvier-mars 1959. p. 277
H. Lechner, Gesetz zur Aenderung des Gesetzes iiber das Bundesverfassungsgericht
No full textH. Lechner, Gesetz zur Aenderung des Gesetzes iiber das Bundesverfassungsgericht. In: Revue internationale de droit comparé. Vol. 11 N°1, Janvier-mars 1959. p. 277
Languard und Tschierva
No full textTeil 1 Piz Languard und die Bernina-Gruppe bei Pontresina, Oberengadin. Skizzen aus Natur und Bevölkerung. Zugleich als Wegweiser für Wanderungen Ernst Lechner Teil 2 Piz Tschierva im Oberengadin Heinrich ZellerErnst Lechner ; Heinrich ZellerVorsatzblatz mit Widmung: "Meiner lieben Tochter Thea, zum Andenken an unsern Aufenthalt in Pontresina im Sommer 1861. Von H. Zeller-Horner
Chern-kernels and anomaly cancellation in M-theory
No full textThis paper deals with magnetic equations of the type dH = J where the current
J is a –function on a brane worldvolume and H a p–form field strength. In many
situations in M–theory this equation needs to be solved for H in terms of a potential.
A standard universality class of solutions, involving Dirac–branes, gives rise
to strong intermediate singularities in H which in many physically relevant cases
lead to inconsistencies. In this paper we present an alternative universality class
of solutions for magnetic equations in terms of Chern–kernels, and provide relevant
applications, among which the anomaly–free effective action for open M2–branes
ending on M5–branes. The unobservability of the Dirac–brane requires a Dirac
quantization condition; we show that the requirement of “unobservability” of the
Chern–kernel leads in M–theory to classical gravitational anomalies which cancel
precisely their quantum counterparts
Networks and the Decision to Persist with Underperforming R&D Projects
No full textDrawing on aspiration level theory and the networks literature, this paper develops a model toward decision makers' persistence with underperforming R&D projects based on the perceived properties of their personal network. The assumption is that positive feedback from network partners motivates persistence, and that this effect is multiplied when the decision makers' network is larger and denser, when network ties are predominantly strong, and when communication frequency within the network is high. The model is tested by a field experiment and conjoint methodology. Analysis of 1632 persistence decisions nested within 51 scientists responsible for R&D projects reveals that more positive feedback enhances persistence of underperforming R&D projects, and that this effect becomes stronger with increasing network size, network density, and communication frequency. These findings extend the project management literature by focusing on the social environment of the decision maker as one so far neglected factor in empirical studies on persistence decisions. Moreover, this study is among the first to investigate contingency relationships between feedback received from network partners and network structure. Finally, while most studies have emphasized that individuals and organizations can profit from their engagements in social networks, this paper suggests a potential dark side of networks by showing that networks can encourage decision makers to persist with their investment in an underperforming-and potentially failing-project. These results can help project managers involved in networking activities to better understand the effects of these activities on their decision policies, and thus draw better and more accurate decisions. Second, this study provides insights into how organizational strategy with respect to dissemination of R&D results and involvement of the organization's R&D managers in the scientific community influences the persistence of underperforming R&D projects, and thereby the organization's R&D expenditures. This can assist top managers to design financial controls and allocate financial resources to managers of underperforming R&D projects in line with the organization's networking strategy
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Supplemental Material, SPPS732610_suppl_mat - Changes in Young Europeans’ Values During the Global Financial Crisis
No full textSupplemental Material, SPPS732610_suppl_mat for Changes in Young Europeans’ Values During the Global Financial Crisis by Florencia M. Sortheix, Philip D. Parker, Clemens M. Lechner, and Shalom H. Schwartz in Social Psychological and Personality Science</p
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Release behaviour of MSW-incineration bottom ash after artificial ageing
No full textOne of the technologically simplest processes applicable to promote
the transformation of bottom ash constituents into a less soluble and more
thermodynamically stable forms is accelerated weathering, known also as
artificial ageing. This treatment mimics and speeds up the natural weathering
processes caused by the contact between ash and atmospheric agents
(water, O2 and CO2) and consists on a series of chemical and mineralogical
transformations including hydration/hydrolysis, dissolution/precipitation of
hydroxides and salts, oxidation/reduction, sorption and ion exchange reactions,
as well as formation of solid solutions and clay-like minerals from
the glassy phase of the material (Meima and Comans, 1997; Meima and
Comans, 1999; Sabbas et al., 2003). In particular, the treatment known
as accelerated carbonation simulates the natural weathering processes occurring
due to prolonged contact with atmospheric CO2 during temporary
storage, utilization or final disposal of incinerator residues
Experimental behaviour of a two-chip charge amplifier for high stability X-ray spectroscopy systems
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