搜索结果: 1-15 共查到“知识库 diversification”相关记录42条 . 查询时间(0.062 秒)
Molecular genetics of ecological diversification: Duplication and rapid evolution of toxin genes of the venomous gastropod Conus
ecological diversification Duplication
2015/12/17
Predatory snails in the marine gastropod
genus Conus stun prey by injecting a complex mixture of
peptide neurotoxins. These conotoxins are associated with
trophic diversification and block a divers...
COMPARATIVE PHYLOGEOGRAPHY OF THREE CODISTRIBUTED STOMATOPODS: ORIGINS AND TIMING OF REGIONAL LINEAGE DIVERSIFICATION IN THE CORAL TRIANGLE
Allopatric speciation biodiversity center of origin
2015/12/17
The Indonesian-Australian Archipelago is the center of the world's marine biodiversity. Although many
biogeographers have suggested that this region is a "center of origin," criticism of this theory...
The Effect of Institutional Factors on the Value of Corporate Diversification
corporate diversification industrial diversification labor market efficiency product market competition competition
2015/5/14
Using a large sample of diversified firms from 38 countries we investigate the influence of several national-level institutional factors or 'institutional voids' on the value of corporate diversificat...
Tools from evolutionary biology shed new light on the diversification of languages
evolutionary biology diversification of languages
2015/4/21
Computational methods have revolutionized evolutionary biology. In this paper we explore the impact these methods are now having on our understanding of the forces that both affect the diversification...
R&D Portfolio Strategy,Diversification and Performance:An Information Perspective
Information regimes Technological Diversification Focus R&D Project Portfolio Managemen
2015/4/20
Decisions about how much to diversify an R&D portfolio and the specific areas in which to pursue projects are fundamental to a firm’s R&D strategy. There is some evidence that larger firms diversify t...
Diversification of increment reactions of Douglas fir (Pseudotsuga menziesii Franco) from mountainous regions of southern Poland
Douglas fir dendroclimatology tree ring
2015/1/28
Dendroclimatological research presented in this paper concerns Douglas fir (P. menziesii) at 17 sites located in the area of the Sudetes Mountains, the Polish part of the Carpathians and Roztocze. The...
Immunoglobulin gene diversification and B-cell ontogeny in cattle
Health and environmental sciences Immunoglobulin Gene diversification Cattle B cells
2015/1/28
The anatomical compartment within which the B-cell develops is different in different animals. This study attempts to trace B-cell ontogeny in cattle by investigating the expression profile of B-cell ...
A Proportionality-based Approach to Search Result Diversification
search result diversification proportionality term level diversification clustering
2014/12/18
Search result diversification addresses the problem of queries with unclear information needs. The aim of using diversification techniques is to find a ranking of documents that covers multiple possib...
Diversification of the bovine primary immunoglobulin heavy chain repertoire: Ontological and hypermutational analyses in fetal and neonatal animals
Immune globulin reproductive gene the early fetus VH genes
2014/12/11
The objective of this dissertation was to identify and characterize diversity within the expressed primary immunoglobulin heavy chain (IgH) repertoire in cattle. Determinations relied heavily upon dif...
Rural income diversification patterns and their determinants in China
Bayesian multinomial probit income generation rural households
2014/7/9
The article investigates the major rural income diversification patterns and their determinants in the context of China. Based on the data from a rural household survey, we first categorize the rural ...
Dynamic Portfolio Analysis and Its Application to the Problem of Export Diversification
Dynamic Portfolio Analysis Its Application to the Problem of Export Diversification
2014/3/24
Dynamic Portfolio Analysis and Its Application to the Problem of Export Diversification。
A Goal Programming Model for Optimal Portfolio Diversification
Set-valued risk measure portfolio optimization multi-criteria optimization goal programming
2012/3/2
We present a goal programming model for risk minimization of a financial portfolio managed by an agent subject to different possible criteria. We extend the classical risk minimization model with scal...
Sectoral Shifts, Diversification and Regional Unemployment: Evidence from Local Labour Systems in Italy
unemployment sectoral shift diversification spatial dependence nonparametrics
2012/10/18
Using Local Labour Systems (LLSs) data, this work aims at assessing the effects of sectoral shifts and industry specialization patterns on regional unemployment in Italy over the years 2004-2008, when...
CORRELATED FAILURES, DIVERSIFICATION, AND INFORMATION SECURITY RISK MANAGEMENT
research on risk management computer network security management information systems diversification of computer software
2011/10/6
The article presents research on risk management related to computer network security in management information systems. A queuing model is presented to quantify the downtown loss faced by a network i...
COUNTRY RESOURCE ENVIRONMENTS, CORPORATE DIVERSIFICATION STRATEGIES, AND FIRM PERFORMANCE
country environments International Diversification PRODUCT DIVERSIFICATION
2011/10/4
This study reexamines corporate diversification strategies by comparing their performance implications given different country resource environments. We accordingly bring country environmental context...