177,278 research outputs found
Simulation and genetic algorithms for ship planning and shipyard layout
No full textThe goal of our research is to develop a collection
of software tools to be integrated into the existing industrial software environment to support
terminal operators in making strategic decisions
about resource allocation and terminal organization. We believe that the first important step in
this process is to define a simulation tool to plan
and optimize the placement of containers in the
terminal. The decision about where a container is
to be placed in the terminal yard depends on
many parameters: the present occupancy level of
the container area (or cluster), the final destination of the containers, the best position to dock
the ship, the container’s size, the container’s
content and so on. The problem is difficult because of the competing nature of these parameters and because the containers arrive some
weeks before the ship’s actual arrival date. In
this paper, we describe the use of genetic algorithms (GAs) to perform two tasks: planning (or
scheduling) the cluster creation and optimally
locating the clusters in the yard. We discuss each
GA in detail and present preliminary results
La qualità dell'aria in edifici scolastici della città di Bari. Nota I: aspetti microbiologici e strutturali
No full text
A fresh look at the nested soft-collinear subtraction scheme: NNLO QCD corrections to N-gluon final states in q q ¯ annihilation
No full textAbstract We describe how the nested soft-collinear subtraction scheme [1] can be used to compute the next-to-next-to-leading order (NNLO) QCD corrections to the production of an arbitrary number of gluonic jets in hadron collisions. We show that the infrared subtraction terms can be combined into recurring structures that in many cases are simple iterations of those terms known from next-to-leading order. The way that these recurring structures are identified and computed is fairly general, and can be applied to any partonic process. As an example, we explicitly demonstrate the cancellation of all singularities in the fully-differential cross section for the q q ¯ → X + Ng process at NNLO in QCD. The finite remainder of the NNLO QCD contribution, which arises upon cancellation of all ϵ-poles, is expressed via relatively simple formulas, which can be implemented in a numerical code in a straightforward way. Our approach can be extended to describe arbitrary processes at NNLO in QCD; the largest remaining challenge at this point is the combinatorics of quark and gluon collinear limits
Complex I and cAMP cascade in human physiology and pathology. The role of the NDUFS4 gene
No full textAppropriate 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
Riflessioni su statuti e politica signorile del diritto: il caso estense fra XV e XVI secolo
No full textL'articolo esamina il problema delle fonti in relazione all'analisi della politica signorile del diritto e della giustizia e si concentra sulla disponibilità di fonti integrative e/o alternative rispetto agli statuti territoriali
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