Evolutionary model

Xem 1-20 trên 123 kết quả Evolutionary model
  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí y học Molecular Biology cung cấp cho các bạn kiến thức về ngành sinh học đề tài: Refining transcriptional regulatory networks using network evolutionary models and gene histories...

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: MONKEY: identifying conserved transcription-factor binding sites in multiple alignments using a binding site-specific evolutionary model...

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  • Evolutionary biology and ecology share the goals of describing variation in natural systems and discovering its functional basis. Within this common framework, evolutionary biologists emphasize historical and lineage-dependent processes and hence often incorporate phylogenetic reconstructions and genetic models in their analyses. Ecologists, while cognizant of historical processes, tend to explain variation in terms of the contemporary effects of biotic and abiotic environmental factors.

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  • Immediately after the first drafts of the human genome sequence were reported almost a decade ago, the importance of genomics and functional genomics studies became well recognized across the broad disciplines of biological sciences research.

    pdf346p orchid_1 17-09-2012 51 21   Download

  • This book addresses the evolutionary stage of Chemical Engineering and provides an overview to the state of the art and technological advancements. Chemical Engineering applications have always been challenging. Optimization of plausible solutions to problems in economic manner through technology is worth. The script has been designed to enable the reader to access the desired knowledge on fundamentals and advancements in Chemical Engineering in a single text.

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  • In the chapter limit properties of genetic algorithms and theproblem of their classification are elaborated. Recently one can observe an increasing interest in properties of genetic algorithms modelled by Markov chains (Vose, Rowe). However, the known results are mainly limited to existence theorems. They say that there exists a limit distribution for a Markov chain describing a simple genetic algorithm. In the chapter we perform the next step on this way and present a formula for this limit distribution for a Markov chain.

    pdf0p bi_bi1 11-07-2012 30 8   Download

  • The epidemiology of infectious diseases is one of the great triumphs of applied ecology. In particular, the public health importance of parasites has lead to a large literature, exploring their impact on the population dynamics, population genetics and evolutionary biology of human populations. An important milestone was the Dahlem Conference on population biology of infectious diseases, held in 1981. The resulting book (Anderson and May 1982) lucidly summarised the contemporary state of parasite ecology and epidemiology.

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  • The book addresses some of the most recent issues, with the theoretical and methodological aspects, of evolutionary multi-objective optimization problems and the various design challenges using different hybrid intelligent approaches. Multi-objective optimization has been available for about two decades, and its application in real-world problems is continuously increasing.

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  • Physicists pretend not only to know everything, but also to know everything bet- ter. This applies in particular to computational statistical physicists like US. Thus many of our colleagues have applied their computer simulation techniques to fields outside of physics, and have published sometimes in biological, economic or sociological journals, and publication flow in the opposite direction has also started.

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  • Based on logistic regression, we developed habitat models for the burnet moth Zygaena carniolica and the nymphalid butterfly Coenonympha arcania in Northern Bavaria, Germany. The relation between adult occurrence and habitat parameters - including the influence of the landscape context - was analyzed on 118 sites.

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  • Fungalb-N-acetylhexosaminidases are inducible extracellular enzymes with many biotechnological applications. The enzyme fromPenicillium oxalicum has unique enzymatic properties despite its close evolutionary relationship with other fungal hexosaminidases.

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  • Research shows that sensational news stories as well as popular romance novels often feature themes related to important topics in evolutionary psychology. In the first of four studies described in this paper we examined the song lyrics from three Billboard charts: Country, Pop, and R&B. A content analysis of the lyrics revealed 18 reproductive themes that read like an outline for a course in evolutionary psychology. Approximately 92% of the 174 songs that made it into the Top Ten in 2009 contained one or more reproductive messages, with an average of 10.49 reproductive...

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  • We do not always need science to teach us what happens on landscapes, though science enriches that story. All who have had to cope in the world knew this, natives of landscapes wherever. Science brings insight into continu- ing organic, ecological, and evolutionary unity, dynamic genesis; but such unity may also have already been realized by pre-scientific peoples in their inhabiting of a landscape. Science can engage us with landscapes too object- ively, academically, disinterestedly; landscapes are also known in participant encounter, by being embodied in them. ...

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  • Following the consensus points described above, we identify the specific benefits and beneficiaries that flow from the typical MA ecosystem services categories. We also identify the spatial data layers needed to map the location of these beneficiaries. In order to enable the ARIES modelling paradigm, all benefits must meet five requirements.

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  • The Japanese, looking as they do for essences in landscapes, enjoy the transi- ence of nature; how the cherry blossoms are here today, gone tomorrow, and will return again next year, and the next after that. Everyone who constitutes a landscape must also cope on that landscape, and in that struggle everyone who beholds landscapes can become sensitive to what is going on as the world continues on, even though they may not know its deep history in geological and evolutionary time. They know context, if not origins.

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  • Alu transposons are found only in primate genomes and have accumulated in large numbers since primates diverged from other mammals. Human chromosomes contain more than one million Alu copies, equaling about 10% of the genome by mass. This accumulation was made possible by a transposition mechanism that reverse transcribes Alu mRNAs into mobile DNA copies. Another transposon, the long interspersed element (LINE) L1, supplies a specialized reverse transcriptase enzyme needed for Alu to jump. Hence, Alu and L1 exist in a sort of molecular symbiosis.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Minireview cung cấp cho các bạn kiến thức về ngành y đề tài: Developmental stage related patterns of codon usage and genomic GC content: searching for evolutionary fingerprints with models of stem cell differentiation...

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Minireview cung cấp cho các bạn kiến thức về ngành y đề tài: Yeasts as models in evolutionary biology...

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  • This property is required because the empirically observed densities of returns contrast with the Gaussian model [see Pagan 1996]. This rejection results from two stylised facts. First, large price changes appear more frequently than the normal density would lead to expect. Second, there are indications of significant asymmetry in stock returns. In other words, negative and positive price changes do not have the same probability. These two stylised facts are also apparent in implied volatilities.

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  • Co-development of drugs and companion diagnostics might need timely and coordinated approval decisions from different bodies to meet the requirements of joint clinical trial schemes and eventually the approval of both the drug and its associated test. In addition, the path to get a stratified indication approved is not always clear. In this respect, the status of retrospective analysis deserves clarification. Besides, the concept of qualification is evolutionary and clear guidelines are missing.

    pdf15p quynho77 14-11-2012 14 0   Download

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