Much of our current knowledge on biological invasion was derived from field studies, but many recent advances relied heavily on mathematics and computing, particularly mathematical modeling. While numerical simulations are clearly a useful approach, they have some serious drawbacks. Approximations errors and the number of parameter values can have a significant impact on the simulation results, the extent of which often remains obscure. Such difficulties do not arise, however, when the problem can be solved analytically. Exactly Solvable Models of Biological Invasion demonstrates the advantages and methods of obtaining exact solutions of partial differential equations that describe nonlinear problems encountered in the study of invasive species spread. With emphasis on PDEs of diffusion-reaction type, the authors present a comprehensive collection of exactly solvable models and a unified, self-contained description of the relevant mathematical methods. In doing so, they also provide new insight into important issues such as the impact of the Allee effect, the impact of predation, and the interplay between different modes of species dispersal. Full calculation details make this presentation accessible to biologists as well as applied mathematicians, and a range of ecological examples and applications demonstrate the utility of exact methods in practice. Exact solutions provide an immediate, complete description of system dynamics for a wide class of initial conditions and serve as a convenient tool for testing numerical algorithms and codes used in more specialized studies. This book lays the groundwork for bringing the power of exactly solvable models to bear on real-world ecological problems.

Much of our current knowledge on biological invasion was derived from field studies, but many recent advances relied heavily on mathematics and computing, particularly mathematical modeling. While numerical simulations are clearly a useful approach, they have some serious drawbacks. Approximations errors and the number of parameter values can have a significant impact on the simulation results, the extent of which often remains obscure. Such difficulties do not arise, however, when the problem can be solved analytically. Exactly Solvable Models of Biological Invasion demonstrates the advantages and methods of obtaining exact solutions of partial differential equations that describe nonlinear problems encountered in the study of invasive species spread. With emphasis on PDEs of diffusion-reaction type, the authors present a comprehensive collection of exactly solvable models and a unified, self-contained description of the relevant mathematical methods. In doing so, they also provide new insight into important issues such as the impact of the Allee effect, the impact of predation, and the interplay between different modes of species dispersal. Full calculation details make this presentation accessible to biologists as well as applied mathematicians, and a range of ecological examples and applications demonstrate the utility of exact methods in practice. Exact solutions provide an immediate, complete description of system dynamics for a wide class of initial conditions and serve as a convenient tool for testing numerical algorithms and codes used in more specialized studies. This book lays the groundwork for bringing the power of exactly solvable models to bear on real-world ecologicalproblems.

This book constitutes the thoroughly refereed proceedings of the National Conference of Theoretical Computer Science, NCTCS 2018, held in Shanghai, China, in October 2018. The 11 full papers presented were carefully reviewed and selected from 31 submissions. They present relevant trends of current research in the area of algorithms and complexity, software theory and method, data science and machine learning theory.

This book constitutes the thoroughly refereed proceedings of the National Conference of Theoretical Computer Science, NCTCS 2017, held in Wuhan, Hubei, China, in October 2017. The 25 full papers presented were carefully reviewed and selected from 84 submissions. They present relevant trends of current research in the area of algorithms and complexity, software theory and method, data science and machine learning theory.

This book constitutes the refereed proceedings of the 11th Annual Conference on Advanced Computer Architecture, ACA 2016, held in Weihai, China, in August 2016. The 17 revised full papers presented were carefully reviewed and selected from 89 submissions. The papers address issues such as processors and circuits; high performance computing; GPUs and accelerators; cloud and data centers; energy and reliability; intelligence computing and mobile computing.

This book examines environmental security from the perspective of landscape sciences, identifying the forces that threaten environmental security at all levels. It stems from the last five years of the Pilot Study Project on Use of Landscape Sciences for Environmental Assessment sponsored by the NATO Committee on the Challenges of Modern Society. Readers explore concepts of environmental security from subjective and objective perspectives.

This book examines environmental security from the perspective of landscape sciences, identifying the forces that threaten environmental security at all levels. It stems from the last five years of the Pilot Study Project on Use of Landscape Sciences for Environmental Assessment sponsored by the NATO Committee on the Challenges of Modern Society. Readers explore concepts of environmental security from subjective and objective perspectives.

This volume constitutes the proceedings of the 13th International Conference on Algorithmic Aspects in Information and Management, AAIM 2019, held in Bejing, China in August 2019. The 31 full papers presented were carefully reviewed and selected. The papers deal with most aspects of theoretical computer science and their applications. Special considerations are given to algorithmic research that is motivated by real-world applications.

Diplomarbeit aus dem Jahr 2006 im Fachbereich BWL - Beschaffung, Produktion, Logistik, Note: 1,7, Universitat Bielefeld (Fakultat fur Wirtschaftwissenschaften), Sprache: Deutsch, Abstract: Inhaltsangabe: Zusammenfassung: Die traditionellen Methoden der Effizienzsteigerung wie z.B. Automatisierung und Rationalisierung sind nahezu vollstandig ausgeschopft. Zur Realisierung von Wettbewerbsvorteilen suchen die Unternehmen nach neuen Methoden, etwa das Outsourcing oder die Verlagerung der Produktionsstandorte ins Ausland. Hinzu kommt noch die zunehmende Virtualisierung von Unternehmen im Netzwerk. Dies alles fuhrt einerseits dazu, dass es den Unternehmen fast unmoglich ist, relevante Informationen allein einzubehalten, ohne es deren Partner wissen zu lassen. Andererseits sind die Unternehmen auch wegen der Ausgangslage aus eigenen Interessen stark daran interessiert, sich auf die Kernkompetenzen zu konzentrieren und mit vorgelagerten bzw. nachgelagerten Unternehmen zu kooperieren. Information-Sharing ist dabei ein unentbehrlicher Teil der unternehmensubergreifenden Kooperationen und seit den letzten Jahren schenken immer mehr Forscher diesem Thema ihre Aufmerksamkeit. Es ist heute von Wissenschaftlern und Pragmatikern anerkannt, dass Informationsaustausch die Informationsverzerrung reduzieren kann. In der Realitat stehen den SC-Mitgliedern zwar viele Absatz-informationen an den Verkaufsstellen zur Verfugung. Es fallt diesen Unternehmen jedoch immer noch schwer, sich einen Einblick in die Geschaftsablaufe zu verschaffen und die Beobachtungen und Beurteilungen der Marktsituation kritisch in eine SC-Losung einzubetten. Die bisherigen Schwierigkeiten sind darin begrundet, dass die ausgetauschten Informationen nicht optimal genutzt und ausgewertet werden. Meine Motivation, mich dem Thema des Information-Sharing in einer SC zu widmen, ist in der zunehmenden Wichtigkeit des Informationsaustausches zwischen den SC-Beteiligten und der mangelnden Kenntnis uber deren Quantifizier