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Concept
Kinds of Concept Terms modified by Concept Selected AbstractsTHE CONCEPT OF FUNDAMENTAL EDUCATIONAL CHANGEEDUCATIONAL THEORY, Issue 3 2007Leonard J Waks By distinguishing sharply between educational change at the organizational and the institutional levels, Waks shows that the mechanisms of change at these two levels are entirely different. He then establishes, by means of a conceptual argument, that fundamental educational change takes place not at the organizational, but rather at the institutional level. Along the way Waks takes Larry Cuban's influential conceptual framework regarding educational change as both a starting point and target of appraisal. [source] MATHEMATICAL CONSEQUENCES OF THE GENEALOGICAL SPECIES CONCEPTEVOLUTION, Issue 8 2002Richard R. Hudson Abstract A genealogical species is defined as a basal group of organisms whose members are all more closely related to each other than they are to any organisms outside the group ("exclusivity'), and which contains no exclusive group within it. In practice, a pair of species is so defined when phylogenies of alleles from a sample of loci shows them to be reciprocally monophyletic at all or some specified fraction of the loci. We investigate the length of time it takes to attain this status when an ancestral population divides into two descendant populations of equal size with no gene exchange, and when genetic drift and mutation are the only evolutionary forces operating. The number of loci used has a substantial effect on the probability of observing reciprocal monophyly at different times after population separation, with very long times needed to observe complete reciprocal monophyly for a large number of loci. In contrast, the number of alleles sampled per locus has a relatively small effect on the probability of reciprocal monophyly. Because a single mitochondrial or chloroplast locus becomes reciprocally monophyletic much faster than does a single nuclear locus, it is not advisable to use mitochondrial and chloroplast DNA to recognize genealogical species for long periods after population divergence. Using a weaker criterion of assigning genealogical species status when more than 50% of sampled nuclear loci show reciprocal monophyly, genealogical species status depends much less on the number of sampled loci, and is attained at roughly 4,7 N generations after populations are isolated, where N is the historically effective population size of each descendant. If genealogical species status is defined as more than 95% of sampled nuclear loci showing reciprocal monophyly, this status is attained after roughly 9,12 N generations. [source] A DESIGN CONCEPT OF AUTONOMOUS CONTROLLER FOR IMPROVING SEISMIC PROOF CAPABILITY OF SEMI-ACTIVE CONTROL DEVICEEXPERIMENTAL TECHNIQUES, Issue 4 2010M.-H. Shih First page of article [source] TOWARDS A UNIFORM CONCEPT FOR THE COMPARISON AND EXTRAPOLATION OF ROCKWALL RETREAT AND ROCKFALL SUPPLYGEOGRAFISKA ANNALER SERIES A: PHYSICAL GEOGRAPHY, Issue 1 2007MICHAEL KRAUTBLATTER ABSTRACT. Rates of rockwall retreat and rockfall supply are fundamental components of sediment budgets in steep environments. However, the standard procedure of referencing rockwall retreat rates using only lithology is inconsistent with research findings and results in a variability that exceeds three orders of magnitude. The concept proposed in this paper argues that the complexity inherent in rockfall studies can be reduced if the stages of (i) backweathering, (ii) filling and depletion of intermediate storage on the rock face and (iii) final rockfall supply onto the talus slopes are separated as these have different response functions and controlling factors. Backweathering responds to preweathering and weathering conditions whereas the filling and depletion of intermediate storage in the rock face is mainly a function of internal and external triggers. The noise apparent in backweathering rates and rockfall supply can be reduced by integrating the relevant controlling factors in the response functions. Simple conceptual models for the three stages are developed and are linked by a time-dependent ,rockfall delivery rate', which is defined as the difference between backweathering and rockfall supply, thus reflecting the specific importance of intermediate storage in the rock face. Existing studies can be characterized according to their ,rockfall delivery ratio', a concept similar to the ,sediment delivery ratio' used in fluvial geomorphology. Their outputs can be qualified as trigger-dependent rockfall supply rates or backweathering rates dependent on (pre-)weathering conditions. It is shown that the existing quantitative backweathering and rockfall supply models implicitly follow the proposed conceptual models and can be accommodated into the uniform model. Suggestions are made for how best to incorporate non-linearities, phase transitions, path dependencies and different timescales into rockfall response functions. [source] THE ,LITTLE ICE AGE': RE-EVALUATION OF AN EVOLVING CONCEPTGEOGRAFISKA ANNALER SERIES A: PHYSICAL GEOGRAPHY, Issue 1 2005JOHN A. MATTHEWS ABSTRACT. This review focuses on the development of the ,Little Ice Age' as a glaciological and climatic concept, and evaluates its current usefulness in the light of new data on the glacier and climatic variations of the last millennium and of the Holocene. ,Little Ice Age' glacierization occurred over about 650 years and can be defined most precisely in the European Alps (c. AD 1300,1950) when extended glaciers were larger than before or since. ,Little Ice Age' climate is defined as a shorter time interval of about 330 years (c. AD 1570,1900) when Northern Hemisphere summer temperatures (land areas north of 20°N) fell significantly below the AD 1961,1990 mean. This climatic definition overlaps the times when the Alpine glaciers attained their latest two highstands (AD 1650 and 1850). It is emphasized, however, that ,Little Ice Age' glacierization was highly dependent on winter precipitation and that ,Little Ice Age' climate was not simply a matter of summer temperatures. Both the glacier-centred and the climate-centred concepts necessarily encompass considerable spatial and temporal variability, which are investigated using maps of mean summer temperature variations over the Northern Hemisphere at 30-year intervals from AD 1571 to 1900. ,Little Ice Age'-type events occurred earlier in the Holocene as exemplified by at least seven glacier expansion episodes that have been identified in southern Norway. Such events provide a broader context and renewed relevance for the ,Little Ice Age', which may be viewed as a ,modern analogue' for the earlier events; and the likelihood that similar events will occur in the future has implications for climatic change in the twenty-first century. It is concluded that the concept of a ,Little Ice Age' will remain useful only by (1) continuing to incorporate the temporal and spatial complexities of glacier and climatic variations as they become better known, and (2) by reflecting improved understanding of the Earth-atmosphere-ocean system and its forcing factors through the interaction of palaeoclimatic reconstruction with climate modelling. [source] PARADIGMS BEHIND (AND BEFORE) THE MODERN CONCEPT OF RELIGIONHISTORY AND THEORY, Issue 4 2006CATHERINE BELL ABSTRACT This essay identifies five paradigms that are basic to understanding the historical emergence and uses of the generic idea of "religion" in the Christian cultures of Europe and America. The spread of this concept has been sufficiently thorough in recent centuries as to make religion appear to be a "social fact," to use Durkheim's phrase, rather than so many cultural expressions and different social practices. The supremacy of Euro-American culture,and an academy still saturated with Christian ideas,has enjoined other cultures and forms of religiosity to conform to this idea of religion; for these cultures contentment with the status quo can vie with the anxieties of influence, including "modernization." The key paradigms discussed are the following: Christianity as the prototype; religion as the opposite of reason; the modern formulation of "world religions"; the cultural necessity of religion; and critical analysis of the Western "construction" of religion. These paradigms demonstrate the limits on theoretical variety in the field, the difficulty in making real changes in set ways of thinking, and productive foci for interdisciplinary methods of study. [source] LAY CONCEPT OF AGING WELL: CROSS-CULTURAL COMPARISONSJOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 5 2008Rocío Fernández-Ballesteros No abstract is available for this article. [source] THE CONCEPT OF INFINITY AND CHINESE THOUGHTJOURNAL OF CHINESE PHILOSOPHY, Issue 4 2008JIANG YI [source] CLARIFYING THE CONCEPT OF GENOCIDEMETAPHILOSOPHY, Issue 3-4 2006MOHAMMED ABED Abstract: This essay develops a detailed account of the features that make a group susceptible to the harm of genocide. If the members of a group consent to a life in common, if the culture of the group is comprehensive, and if the social structure of the group is such that membership cannot easily be renounced, then the flourishing of the group's culture and social ethos will have profound and far-reaching effects on the well-being of its individual members. Systematic destruction of cultural and social institutions under these conditions will eventuate in individuals suffering the harms and deprivations peculiar to the crime of genocide. The later sections of the essay illustrate and further defend the thesis that "social death" is the harm that distinguishes genocide from other forms of political violence. [source] SIMONE WEIL'S CONCEPT OF GRACE1MODERN THEOLOGY, Issue 2 2009BARTOMEU ESTELRICH This article explores three models used by Simone Weil to describe the concept of grace. In these models grace is depicted as a divine movement that (a) persuades the person to look for transcendent unity behind contradictions; that (b) redirects human attention to God; and that (c) transforms the soul through a process of passivity and waiting. By analyzing the differences and similarities of these three models and by connecting them to two geometric figures (triangle and cross), this article points out the noetic, cosmological, theological, phenomenological, and mystical implications of Weil's philosophy. [source] INCOMMENSURABILITY, RELATIVISM, SCEPTICISM: REFLECTIONS ON ACQUIRING A CONCEPTRATIO, Issue 2 2008Nathaniel Goldberg Some opponents of the incommensurability thesis, such as Davidson and Rorty, have argued that the very idea of incommensurability is incoherent and that the existence of alternative and incommensurable conceptual schemes is a conceptual impossibility. If true, this refutes Kuhnian relativism and Kantian scepticism in one fell swoop. For Kuhnian relativism depends on the possibility of alternative, humanly accessible conceptual schemes that are incommensurable with one another, and the Kantian notion of a realm of unknowable things-in-themselves gives rise to the possibility of humanly inaccessible schemes that are incommensurable with even our best current or future science. In what follows we argue that the possibility of incommensurability of either the Kuhnian or the Kantian variety is inescapable and that this conclusion is forced upon us by a simple consideration of what is involved in acquiring a concept. It turns out that the threats from relativism and scepticism are real, and that anyone, including Davidson himself, who has ever defended an account of concept acquisition is committed to one or the other of these two possibilities.1 [source] THE CONCEPT OF ,ART' IN HENRICIAN ENGLANDART HISTORY, Issue 2 2009TATIANA C. STRING This article suggests revisions to the scholarly orthodoxies concerning the status of art in Early Modern England, particularly during the reign of Henry viii. In the absence of the theoretical discussions of art that existed elsewhere in Europe, one must explore other methodological possibilities. What emerges is a more sophisticated appreciation of art than has been realized. Of particular value as evidence are the royal inventories, which reveal not only the types of art collected, but also the manner of its display. The approaches adopted here, it is argued, have wider applications beyond the study of Tudor England. [source] Assessing the impact of riparian processes on streambank stability,ECOHYDROLOGY, Issue 3 2009Eddy J. Langendoen Abstract The series of biennial United States (US) National Water Quality Inventory surveys shows no reduction in the percentage of degraded miles of streams since the early 1990s despite an exponential increase in river restoration projects to improve water quality, enhance in-stream habitat and manage the riparian zone. This may suggest that many river restoration projects fail to achieve their objectives. This is partly due to a lack of understanding of the dynamics of the degraded riverine system and its interaction with the riparian zone. These projects could, therefore, benefit from using proven models of stream and riparian processes to guide restoration design and to evaluate indicators of ecological integrity. The US Department of Agriculture has developed two such models: the channel evolution computer model CONCEPTS and the riparian ecosystem model REMM. These models have been integrated to evaluate the impact of edge-of-field and riparian conservation measures on stream morphology and water quality. Vegetative riparian conservation measures are commonly used to stabilize failing streambanks. The shear strength of bank soils is greatly affected by the degree of saturation of the soils and root reinforcement provided by riparian vegetation. The integrated model was used to study the effectiveness of woody and herbaceous riparian buffers in controlling streambank erosion of an incised stream in northern Mississippi. Comparison of model results with observations showed that pore-water pressures are accurately predicted in the upper part of the streambank, away from the groundwater table. Simulated pore-water pressures deviate from those observed lower in the streambank near the phreatic surface. These discrepancies are mainly caused by differences in the simulated location of the phreatic surface and simulated evapotranspiration in case of the woody buffer. The modelling exercise further showed that a coarse rooting system, e.g. as provided by trees, significantly reduced bank erosion rates for this deeply incised stream. Published in 2009 by John Wiley & Sons, Ltd. [source] UNIFYING CONCEPTS IN TEACHING OPTICAL METHODSEXPERIMENTAL TECHNIQUES, Issue 2 2002G. Cloud First page of article [source] FROM IDEAS TO CONCEPTS TO METAPHORS: THE GERMAN TRADITION OF INTELLECTUAL HISTORY AND THE COMPLEX FABRIC OF LANGUAGEHISTORY AND THEORY, Issue 2 2010ELÍAS JOSÉ PALTI ABSTRACT Recently, the diffusion of the so-called "new intellectual history" led to the dismissal of the old school of the "history of ideas" on the basis of its ahistorical nature (the view of ideas as eternal entities). This formulation is actually misleading, missing the core of the transformation produced in the field. It is not true that the history of ideas simply ignored the fact that the meaning of ideas changes over time. The issue at stake here is really not how ideas changed (the mere description of the semantic transformation they underwent historically), but rather why they do. The study of the German tradition of intellectual history serves in this essay as a basis to illustrate the meaning and significance of the recent turn from ideas as its object. In the process of trying to account for the source of contingency of conceptual formations, it will open our horizon to the complex nature of the ways by which we invest the world with meaning. That is, it will disclose the presence of different layers of symbolic reality lying beneath the surface level of "ideas," and analyze their differential nature and functions. It will also show the reasons for the ultimate failure of the "history of ideas" approach, why discourses can never achieve their vocation to constitute themselves as self-enclosed, rationally integrated systems, thereby expelling contingency from their realm. In sum, it will show why historicity is not merely something that comes to intellectual history from without (as a by-product of social history or as the result of the action of an external agent), as the history of ideas assumed, but is a constitutive dimension of it. [source] ENCOUNTERING CONCEPTS IN CONTEXTMONOGRAPHS OF THE SOCIETY FOR RESEARCH IN CHILD DEVELOPMENT, Issue 1 2008Arlene S. Walker-Andrews First page of article [source] SHA,AR HAGOLAN AND NEW INSIGHTS ON NEAR EASTERN PROTO-HISTORIC URBAN CONCEPTSOXFORD JOURNAL OF ARCHAEOLOGY, Issue 2 2009DAVID BEN-SHLOMO Summary. The new results from the Pottery Neolithic site of Sha,ar Hagolan in Israel, dated to 6400,6000 BC (calibrated), reveal advanced notions of settlement planning, including the introduction of courtyard houses, a street system and infrastructure such as the construction of a water well. It is suggested, on the basis of the Near Eastern archaeological evidence from the eighth to sixth millennia BC, that early signs of urban concepts may be found at this stage. These signs show the development of ,functionally hierarchical' concepts reflected in domestic architecture and settlement planning. At least from the cognitive point of view, these concepts may be on the direct trajectory towards the full-blown urban centres of the fourth and third millennia BC in the Near East. [source] CONCEPTS OF FAIRNESS IN THE GLOBAL TRADING SYSTEMPACIFIC ECONOMIC REVIEW, Issue 3 2007Andrew G. Brown We then suggest that fairness can best be considered within the framework of two concepts: equality of opportunity and distributive equity. We thereafter discuss what these mean as applied to market access and its supporting rules as well as to dispute settlement and trade remedy measures. Finally, we make some comments about fairness in the Doha Development Round. [source] A (SELLARSIAN) KANTIAN CRITIQUE OF HUME'S THEORY OF CONCEPTSPACIFIC PHILOSOPHICAL QUARTERLY, Issue 4 2007DAVID LANDY This explanation includes a complicated attempted reduction of beliefs, or judgments, to single ideas. This paper attempts to demonstrate one of the inadequacies of this approach, and any of its kind (any attempted reduction of judgments to their constituent parts, single or multiple) via an argument concerning the logical forms of judgment found implicitly in Kant's Critique of Pure Reason, and more explicitly in the works of Wilfrid Sellars. [source] TWO CONCEPTS OF EMPIRICAL ETHICSBIOETHICS, Issue 4 2009MALCOLM PARKER ABSTRACT The turn to empirical ethics answers two calls. The first is for a richer account of morality than that afforded by bioethical principlism, which is cast as excessively abstract and thin on the facts. The second is for the facts in question to be those of human experience and not some other, unworldly realm. Empirical ethics therefore promises a richer naturalistic ethics, but in fulfilling the second call it often fails to heed the metaethical requirements related to the first. Empirical ethics risks losing the normative edge which necessarily characterizes the ethical, by failing to account for the nature and the logic of moral norms. I sketch a naturalistic theory, teleological expressivism (TE), which negotiates the naturalistic fallacy by providing a more satisfactory means of taking into account facts and research data with ethical implications. The examples of informed consent and the euthanasia debate are used to illustrate the superiority of this approach, and the problems consequent on including the facts in the wrong kind of way. [source] TRANSFORMATIONAL, CONSERVATIVE AND TERMINAL OBJECTS: THE APPLICATION OF BOLLAS'S CONCEPTS TO PRACTICEBRITISH JOURNAL OF PSYCHOTHERAPY, Issue 1 2000Gabriela Mann ABSTRACT This paper focuses on Christopher Bollas's contributions to the understanding of transformations in object usage. Bollas has delineated numerous kinds of object usage but has not described the possible transformations that could occur as a result of psychotherapy. The author examines conservative and terminal objects, on the one hand, and transformational objects, on the other hand, as signifiers for the kinds of transformation that are likely to occur in psychotherapy. Two vignettes informed by Bollas's ideas will illustrate how the therapist can facilitate the patient' s use of the therapeutic environment that,transforms' rather than,conserves' or,terminates' psychic evolution. The author describes how Bollas draws from diverse theoretical sources, particularly from Freud, Winnicott and Bion. The author also suggests that unrestricted use of different theoretical frameworks is consistent with Bollas's favoring free movement between different modes of interpretation. It is argued that this flexibility of moving between modalities is indeed the chief distinguishing characteristic of Bollas's therapeutic style. [source] Ecosystem Services as a Stakeholder-Driven Concept for Conservation ScienceCONSERVATION BIOLOGY, Issue 3 2010SUSANNE MENZEL No abstract is available for this article. [source] Sustainability as a Bridging ConceptCONSERVATION BIOLOGY, Issue 1 2005ROBERT PAEHLKE No abstract is available for this article. [source] Application of the New Keystone-Species Concept to Prairie Dogs: How Well Does It Work?CONSERVATION BIOLOGY, Issue 6 2000Natasha B. Kotliar This prompted Power et al. (1996) to refine the definition: keystone species have large effects on community structure or ecosystem function (i.e., high overall importance), and this effect should be large relative to abundance (i.e., high community importance). Using prairie dogs (Cynomys spp.) as an example, I review operational and conceptual difficulties encountered in applying this definition. As applied to prairie dogs, the implicit assumption that overall importance is a linear function of abundance is invalid. In addition, community importance is sensitive to abundance levels, the definition of community, and sampling scale. These problems arise largely from the equation for community importance, as used in conjunction with removal experiments at single abundance levels. I suggest that we shift from the current emphasis on the dualism between keystone and nonkeystone species and instead examine how overall and community importance vary (1) with abundance, (2) across spatial and temporal scales, and (3) under diverse ecological conditions. In addition, I propose that a third criterion be incorporated into the definition: keystone species perform roles not performed by other species or processes. Examination of how these factors vary among populations of keystone species should help identify the factors contributing to, or limiting, keystone-level functions, thereby increasing the usefulness of the keystone-species concept in ecology and conservation. Although the quantitative framework of Power et al. falls short of being fully operational, my conceptual guidelines may improve the usefulness of the keystone-species concept. Careful attention to the factors that limit keystone function will help avoid misplaced emphasis on keystone species at the expense of other species. Resumen: Se ha sugerido que el concepto de especie pilar no sea usado más en ecología y conservación, principalmente debido a que el concepto ha sido pobremente definido. Esto instigó a Power et al. (1996) a refinar la definición: las especies pilar tienen grandes efectos en la estructura de una comunidad o la función de un ecosistema (alta importancia en lo general), y este efecto debe ser grande en relación con la abundancia (alta importancia en la comunidad). Usando los perros de pradera (Cynomys spp) como ejemplo, revisé las dificultades operativas y conceptuales encontradas durante la aplicación de esta definición. Al aplicarse a perros de pradera, la suposición implícita de que la importancia en lo general es una función lineal de la abundancia es inválida. Además, la importancia en la comunidad es sensible a los niveles de abundancia, a la definición de comunidad y a la escala de muestreo. Estos problemas surgen, en gran medida, de la ecuación para la importancia en la comunidad, al ser usada conjuntamente con experimentos de remoción a un solo nivel de abundancia. Sugiero que el énfasis actual en la dualidad sobre especies pilares/no pilares cambie para examinar cómo varía la importancia en lo general y en la comunidad; (1) con la abundancia, (2) a lo largo de escalas espaciales y temporales, y (3) bajo diversas condiciones ecológicas. Además, propongo que sea incorporado un tercer criterio en la definición: las especies pilar llevan a cabo funciones no llevadas a cabo por otras especies o procesos. El análisis de cómo varían estos factores entre poblaciones de especies pilar ayudará a identificar los factores que contribuyen, o limitan las funciones a nivel pilar, incrementando con ello la utilidad del concepto de especie pilar en ecología y conservación. Aunque el marco de trabajo cuantitativo de Power et al. no llega a ser completamente operacional, mis guías conceptuales pueden mejorar la utilidad de este concepto. Una atención especial a los factores que limitan el funcionamiento pilar ayudaría a evitar un énfasis mal ubicado en especies pilar a costa de otras especies. [source] Autonomy and Anti-Art: Adorno's Concept of Avant-Garde ArtCONSTELLATIONS: AN INTERNATIONAL JOURNAL OF CRITICAL AND DEMOCRATIC THEORY, Issue 2 2000Stewart Martin First page of article [source] Toward the School as Sanctuary Concept in Multicultural Urban Education: Implications for Small High School ReformCURRICULUM INQUIRY, Issue 3 2006RENÉ ANTROP-GONZÁLEZ ABSTRACT This article describes the school as sanctuary concept through the voices of students enrolled in a small urban high school that curricularly privileges the linguistic, cultural, and sociopolitical realities of its communities. Moreover, this particular school was founded by students and teachers over 30 years ago as a direct response to pedagogically and psychologically colonizing large comprehensive high schools in a major urban school district. According to students, a school becomes a sanctuary when there are four essential components in place. These sanctuary-like attributes include multiple definitions of caring relations between students and their teachers, the importance of a familial-like school environment, the necessity of psychologically and physically safe school spaces, and allowing students a forum in which they are encouraged to affirm their racial/ethnic pride. Implications for forwarding this concept within a larger discourse around urban school reform are discussed. [source] Vulnerability, Control and Oil Palm in Sarawak: Globalization and a New Era?DEVELOPMENT AND CHANGE, Issue 2 2002Fadzilah Majid Cooke In the post logging era, Sarawak is being restructured to make way for large-scale oil palm plantations. In this restructuring, the vulnerabilities of particular areas are being used in a wider battle to control production, particularly for export. Native customary lands, considered ,unproductive' or ,idle' by officials, are the target of oil palm plantation development under a new land development programme called Konsep Baru (New Concept). This article looks at the contradictions generated by the complex process of laying claims to ,idle' native customary land and focuses on Dayak organizing initiatives in northern Sarawak, Malaysia. [source] Linking Social Development with the Capacity to Carry Debt: Towards an MDG-Consistent Debt-Sustainability ConceptDEVELOPMENT POLICY REVIEW, Issue 3 2009Bernhard G. Gunter Owing to concerns among low-income countries that the new debt sustainability framework of the Bretton Woods institutions may lock them into a so-called ,low debt-low growth' scenario, the United Nations has called for a more MDG-consistent debt-sustainability concept. This article shows that there is a robust relationship between achieving the Millennium Development Goals and having a higher capacity to carry debt. It then discusses options for modifying the current debt-sustainability framework, and suggests that including progress made in achieving the MDGs in determining borrowing limits would be a first step towards adopting such a concept. [source] The implications of different species concepts for describing biodiversity patterns and assessing conservation needs for African birdsECOGRAPHY, Issue 5 2005Shaun Dillon It has been suggested that switching from the widely used Biological Species Concept to a Phylogenetic Species Concept, would result in the appearance of hitherto neglected patterns of endemism. The problem has mainly been analyzed with respect to endemic taxa and for rather limited geographical regions, but will here be analysed for the entire resident avifauna of sub-Saharan Africa. A database of African bird distributions was re-edited to create two new datasets representing 1572 biological species and 2098 phylogenetic species. Species richness patterns were virtually identical with the two taxonomies, and only subtle changes were found in the geographical variation in range-size rarity sum. However, there were some differences in the most range-restricted species, with increased complexity of long-recognized centres of endemism. Overall, then, the large-scale biogeographic patterns are robust to changes in species concepts. This reflects the aggregated nature of endemism, with certain areas acting as "species pumps" and large intervening areas being characterised by a predominance of widespread species which distribute themselves in accordance with contemporary environmental conditions. The percentages of phylogenetic and threatened species captured in a BSC near-minimum set of 64 grid-cells and a PSC near-maximum set, with the same number of grid-cells, are very similar. [source] Strategic Entrepreneurship: Exploring Different Perspectives of an Emerging ConceptENTREPRENEURSHIP THEORY AND PRACTICE, Issue 1 2009Donald F. Kuratko Within the entrepreneurship and strategic management domains there has been a movement by scholars to combine certain aspects of both areas to create a new concept of strategic entrepreneurship. To date, however, there remains much to know about what constitutes this concept. This special issue is the result of a unique research conference in Germany where some of the world's most renowned scholars gathered to explore this concept in depth. The set of articles in this special issue examine different perspectives that relate to strategic entrepreneurship and we believe contribute to the growing body of knowledge on this concept by examining diverse scholarly topics. This introduction provides the overview of the perspectives contained in strategic entrepreneurship and argues for the importance of embracing diverse views at this stage rather than attempting to restrict the analysis of this emerging topic. [source] | ||||||||||||||||||||||||||||||||||||||||||||||