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New Kind (new + kind)
Selected AbstractsSecond Diasporist Manifesto (A New Kind of Long Poem in 615 Free Verses) , By R. B. KitajRELIGIOUS STUDIES REVIEW, Issue 2 2010Zachary Braiterman No abstract is available for this article. [source] A New Kind of Trainer How to Develop the Training Role for People with Learning DisabilitiesBRITISH JOURNAL OF LEARNING DISABILITIES, Issue 3 2006Jeffrey Hammond No abstract is available for this article. [source] ChemInform Abstract: Prediction and Characterization of a New Kind of Alkali,Superhalogen Species with Considerable Stability: MBeX3 (M: Li, Na; X: F, Cl, Br).CHEMINFORM, Issue 6 2008Song-Hua Cui Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] Rural market imperfections and the role of institutions in collective action to improve markets for the poorNATURAL RESOURCES FORUM, Issue 1 2008Bekele Shiferaw Abstract Many countries in sub-Saharan Africa have liberalized markets to improve efficiency and enhance market linkages for smallholder farmers. The expected positive response by the private sector in areas with limited market infrastructure has however been very limited. The functioning of markets is constrained by high transaction costs and coordination problems along the production-to-consumption value chain. New kinds of institutional arrangements are needed to reduce these costs and fill the vacuum left when governments withdrew from markets in the era of structural adjustments. One of these institutional innovations has been the strengthening of producer organizations and formation of collective marketing groups as instruments to remedy pervasive market failures in rural economies. The analysis presented here with a case study from eastern Kenya has shown that marketing groups pay 20,25% higher prices than other buyers to farmers while participation was also positively correlated with adoption of improved dryland legume varieties, crops not targeted by the formal extension system. However the effectiveness of marketing groups is undermined by external shocks and structural constraints that limit the volume of trade and access to capital and information, and require investments in complementary institutions and coordination mechanisms to exploit scale economies. Successful groups have shown high levels of collective action in the form of increased participatory decision making, member contributions and initial start-up capital. Failure to pay on delivery, resulting from lack of capital credit, is a major constraint that stifles competitiveness of marketing groups relative to other buyers. These findings call for interventions that improve governance and participation; mechanisms for improving access to operating capital; and effective strategies for risk management and enhancing the business skills of farmer marketing groups. [source] CONSENT, COMMODIFICATION AND BENEFIT-SHARING IN GENETIC RESEARCH1DEVELOPING WORLD BIOETHICS, Issue 2 2004DONNA DICKENSON ABSTRACT The global value of the biotechnology industry is now estimated at 17 billion dollars, with over 1300 firms involved as of the year 2000.2 It has been said that ,What we are witnessing is nothing less than a new kind of gold rush, and the territory is the body.' As in previous gold rushes, prospectors are flooding into unexplored and ,wide open' territories from all over the world, with possible ramifications for exploitation of Third World populations. These territories are also the Wild West of bioethics insofar as the law has very little hold on them: existing medical and patent law, such as the Moore and Chakrabarty cases, exert little control over powerful economic interests in both the United States and Europe. In the absence of a unified and consistent law on property in the body, the focus is increasingly on refining the consent approach to rights in human tissue and the human genome, with sensitive and promising developments from the Human Genetics Commission and the Department for International Development consultation on intellectual property. These developments incorporate the views of vulnerable genetic communities such as Native Americans or some Third World populations, and should be welcomed because they recognise the power imbalance between such groups and First World researchers or firms. However, they also highlight the continued tension about what is really wrong with commodifying human tissue or the human genome. Where's the injustice, and can it be solved by a more sophisticated consent procedure? [source] Essentialism in the absence of language?DEVELOPMENTAL SCIENCE, Issue 4 2010Evidence from rhesus monkeys (Macaca mulatta) We explored whether rhesus monkeys (Macaca mulatta) share one important feature of human essentialist reasoning: the capacity to track category membership across radical featural transformations. Specifically, we examined whether monkeys , like children (Keil, 1989) , expect a transformed object to have the internal properties of its original category. In two experiments, monkeys watched as an experimenter visually transformed a familiar fruit (e.g. apple) into a new kind of fruit (e.g. coconut) either by placing a fruit exterior over the original, or by removing an exterior shell and revealing the inside kind of fruit. The experimenter then pretended to place an inside piece of the transformed fruit into a box which the monkey was allowed to search. Results indicated that monkeys searched the box longer when they found a piece of fruit inconsistent with the inside kind, suggesting that the monkeys expected that the inside of the transformed fruit would taste like the innermost kind they saw. These results suggest that monkeys may share at least one aspect of psychological essentialism: They maintain category-specific expectations about an object's internal properties even when that object's external properties change. These results therefore suggest that some essentialist expectations may emerge in the absence of language, and thus raise the possibility that such tendencies may emerge earlier in human development than has previously been considered. [source] German Castles, Customs, and Culture: Introducing a New Approach to the Undergraduate Culture CourseDIE UNTERRICHTSPRAXIS/TEACHING GERMAN, Issue 2 2008John F. Lalande II Courses on the culture of the German-speaking world (GSW) have long dotted the landscape of undergraduate course offerings at North American colleges and universities. The primary purpose of this article is to share information about a new kind of undergraduate culture course that uses castles as a vehicle for introducing students to past and present aspects of GSW culture. [source] Between court and counts: Carolingian Catalonia and the aprisio grant, 778,897EARLY MEDIEVAL EUROPE, Issue 1 2002Cullen J. Chandler In the late eighth century, Charlemagne issued a new kind of land grant in Septimania and the Spanish March to refugees fleeing Muslim Spain. This grant, the aprisio, was made from fiscal land in deserted areas and included special rights and immunities. Previous scholars have interpreted the aprisio in economic and military terms as a mechanism to entice settlers to the region in order to make the land productive and to provide warriors to defend the Frankish frontier. This article suggests that political concerns also may have played an important role, arguing that the aprisio grant was an attempt by Carolingian kings to limit the power exercised by very powerful marcher counts. [source] Properties of Poly(sodium 4-styrenesulfonate)-Ionic Liquid Composite Film and Its Application in the Determination of Trace Metals Combined with Bismuth Film ElectrodeELECTROANALYSIS, Issue 5 2008Jianbo Jia Abstract A new kind of bismuth film modified electrode to sensitively detect trace metal ions based on incorporating highly conductive ionic liquids 1-butyl-3-methyl-imidazolium hexafluorophosphate (BMIMPF6) in solid matrices at glassy carbon (GC) was investigated. Poly(sodium 4-styrenesulfonate) (PSS), silica, and Nafion were selected as the solid matrices. The electrochemical properties of the mixed films modified GC were evaluated. The electron transfer rate of Fe(CN)64,/Fe(CN)63, can be effectively improved at the PSS-BMIMPF6 modified GC. The bismuth modified PSS-BMIMPF6 composite film electrodes (GC/PSS-BMIMPF6/BiFEs) displayed high mechanical stability and sensitive stripping voltammetric performances for the determination of trace metal cations. The GC/PSS-BMIMPF6/BiFE exhibited well linear response to both Cd(II) and Pb(II) over a concentration range from 1.0 to 50,,g L,1. And the detection limits were 0.07,,g L,1 for Cd(II) and 0.09,,g L,1 for Pb(II) based on three times the standard deviation of the baseline with a preconcentration time of 120,s, respectively. Finally, the GC/PSS-BMIMPF6/BiFEs were successfully applied to the determination of Cd(II) and Pb(II) in real sample, and the results of present method agreed well with those of atomic absorption spectroscopy. [source] Tape Casting of Graphite Material: A New Electrochemical SensorELECTROANALYSIS, Issue 16 2006M. Chicharro Abstract Tape casting is a feasible method for preparing ceramic tapes with different electrical and magnetic properties for multilayer ceramic devices. This paper describes the tape casting process for the preparation of a new kind of self-standing carbon electrodes (SSCE) using different ratios of graphite and the organic additives generally used in the non-aqueous tape casting process. [source] 1-Alkoxyamino-2-nitroalkanes as Key Building Blocks for a Chemo- and Diastereoselective Synthesis of a New Type of Polyfunctionalized N -AlkoxypiperidineEUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 28 2010M. Ángeles López-García Abstract A highly efficient conversion of ,-nitrostyrenes into a new kind of functionalized N -alkoxy-2-hydroxypiperidine in two steps was developed, giving excellent yields and diastereoselectivity. The prepared compounds are the first examples of N -alkoxy-2-hydroxypiperidines. The synthetic approach involved the conjugate addition of alkoxyamines to ,-nitrostyrenes, followed by Michael addition of the isolated nitroalkoxyamines to ,,,-unsaturated carbonyl compounds, and intramolecular addition of the alkoxyamino group to the carbonyl functionality of the (non-isolated) adducts. Although three stereogenic centers are formed, only one diastereoisomer was detected. This unprecedented sequence of reactions can also be performed in a one-pot fashion. [source] Optical CDMA codes for use in a lightwave communication network with multiple data rates,EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS, Issue 3 2002Jian-Guo Zhang This paper presents a new kind of optical code-division multiple-access (CDMA) codes, called unequal-length optical orthogonal codes (UL-OOC's), for multirate data communications. The autocorrelation and cross-correlation functions of UL-OOC's are dependent only on each individual codeword, in spite of either an aperiodic or a periodic pulse-sequence pattern at the input of optical CDMA decoders. This property can be thus used to support multirate data communications in a lightwave network, without any violation of the minimum correlation constraint (i.e., "1") for incoherent optical processing. Theory and simple design of UL-OOC's are presented. Applications of the proposed codes to multirate optical CDMA is also explained in detail. [source] Fabrication and Characterization of Superhydrophobic Surfaces with Dynamic StabilityADVANCED FUNCTIONAL MATERIALS, Issue 19 2010Xi Yao Abstract Superhydrophobic surfaces of dynamic stability are crucial for applications in water-repellent materials. In this work, a hierarchical structure composed of a dendritic microporous surface with nanostructured porosity is demonstrated that shows robust superhydrophobicity with dynamic stability. The hierarchical structures are obtained on both copper foils and wires by a dynamic gas-bubble template-assisted electrochemical deposition method. The substrates can then be modified with alkyl thiols to obtain the surface superhydrophobicity. A new kind of testing, mechanical monitor-assisted continuous water surface strokes, is developed to reveal the dynamic stability of the as-prepared superhydrophobic copper wires. The as-prepared superhydrophobic copper wires can exert a high propulsive force, and particularly, show little adhesive force in the process of continuous strokes on the water surface, exhibiting robust superhydrophobicity with dynamic stability. The approach allows a strategy for the fabrication of superhydrophobic surfaces with dynamic stability, and suggests a new method to evaluate the dynamic stability of superhydrophobic surfaces. [source] The Contemporary Professoriate: Towards a Diversified or Segmented Profession?HIGHER EDUCATION QUARTERLY, Issue 2 2007Nelly P. Stromquist On the empirical basis of six national studies (Mexico, Brazil, Peru, Denmark, Russia and South Africa), this paper examines the phenomenon of segmentation, defined as the solidification of deep hierarchies with little crossover between categories of institutions or individuals. The massification of higher education has brought about a great diversity of institutions and, concomitantly, stark differences among the professoriate. While the public sector has to some extent been able to protect its academic personnel, the for-profit sector is moving towards an unstable professoriate, poorly paid, hired mostly on a per-hour basis, and for whom sharing in academic governance is a distant dream. Some of this differentiation is emerging also within institutions and a new kind of academic who could be termed ,just-in-time knowledge worker' is on the rise. [source] Making R&D More Than Research Plus DevelopmentHIGHER EDUCATION QUARTERLY, Issue 2 2000Geoff Stanton Much criticism of educational research has focussed on the problem of its effective dissemination to practitioners. This paper explores an alternative model, in which research, in some of its modes at least, is linked with development rather than dissemination. This argument is made in the context of further education. Most further education colleges have a tradition of involvement in development work, and many have a senior member of staff responsible for it. An examination of this has led to the conclusion that a two-way link needs to exist between researchers and those who have the role of development manager in colleges. It is argued that a well developed model embracing both research and development could be very powerful, and could establish a new and more productive relationship between colleges and universities. However, it is also argued that this relationship cannot be fully effective without some form of mediation. This requires the creation of a new kind of professional to undertake this function. The model proposed is one in which research and development remain distinct activities, each with their own disciplines and expertise, but where R&D as an integrated concept becomes more than the sum of its parts. [source] More than a great poster: Lord Kitchener and the image of the military heroHISTORICAL RESEARCH, Issue 185 2001Keith Surridge Lord Kitchener was once a great legendary figure but the imagery and iconography used to create the legend is less well known. By using his papers and contemporary literature this article attempts to shed light on how Kitchener was regarded by his peers and the public. Instead of the wholesome English traits attributed to his predecessors, Kitchener's admirers and enemies described him as ,oriental', ,teutonic', devious, cruel, machine-like and efficient, which made him the ideal champion for a country undergoing a collective crisis of confidence before 1914. Thus Kitchener was, in many ways, a new kind of hero. [source] FELLOW CITIZENS AND IMPERIAL SUBJECTS: CONQUEST AND SOVEREIGNTY IN EUROPE'S OVERSEAS EMPIRESHISTORY AND THEORY, Issue 4 2005ANTHONY PAGDEN ABSTRACT This article traces the association between the European overseas empires and the concept of sovereignty, arguing that, ever since the days of Cicero,if not earlier,Europeans had clung to the idea that there was a close association between a people and the territory it happened to occupy. This made it necessary to think of an "empire" as a unity,an "immense body," to use Tacitus's phrase,that would embrace all its subjects under a single sovereign. By the end of the eighteenth century it had become possible, in this way, to speak of "empires of liberty" that would operate for the ultimate benefit of all their "citizens," freeing them from previous tyrannical rulers and bringing them under the protection of more benign regimes. In such empires sovereignty could only ever be, as it had become in Europe, undivided. The collapse of Europe's "first" empires in the Americas, however, was followed rapidly by Napoleon's attempt to create a new kind of Empire in Europe. The ultimate, and costly, failure of this project led many, Benjamin Constant among them, to believe that the age of empires was now over and had been replaced by the age of commerce. But what in fact succeeded Napoleon was the modern European state system, which attempted not to replace empire by trade, as Constant had hoped, but to create a new kind of empire, one that sought to minimize domination and settlement, and to make a sharp distinction between imperial ruler and imperial subject. In this kind of empire, sovereignty could only be "divided." Various kinds of divided rule were thus devised in the nineteenth century. Far, however, from being an improvement on the past, this ultimately resulted in,or at least contributed greatly to,the emergence of the largely fictional and inevitably unstable societies that after the final collapse of the European empires became the new states of the "developing world." [source] Intramolecular Donor,Acceptor Regioregular Poly(hexylphenanthrenyl-imidazole thiophene) Exhibits Enhanced Hole Mobility for Heterojunction Solar Cell ApplicationsADVANCED MATERIALS, Issue 20 2009Yao-Te Chang PHPIT, a new kind of intramolecular donor,acceptor side-chain-tethered hexylphenanthrenyl-imidazole polythiophene is synthesized. The more-balanced electron and hole mobilities and the enhanced visible- and internal-light absorptions in the devices consisting of annealed PHPIT/PCBM blends both contribute to a much higher short-circuit current density, which in turn led to a power conversion efficiency as high as 4.1%. [source] Splitting elastic modulus finite element method and its applicationINTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING, Issue 10 2001Dang Faning Abstract To establish the best precision FEM, the proportion of potential and complementary energy in the functional of the variational principles must be changeable. A new kind of variational principle in linear theory of solid mechanics, called the splitting elastic modulus variational principle, is introduced. Its distinctive feature is that the functional contains one arbitrary additional parameter, called splitting factor; the proportion of potential and complementary energy in the functional can be changed by the splitting factor. Finite element method, which is based on the new principle, is established. It is called splitting modulus FEM, its stiffness can be adjusted by properly selecting the splitting factors, some ill-conditioned problem can be conquered by it. The methods to choose the splitting factors, reduce the condition number of stiffness matrix and improve the precision of solutions are also discussed. The reason why the new method can transform the ill-conditioned problems into well-conditioned ones is analysed finally. Copyright © 2001 John Wiley & Sons, Ltd. [source] Circuits, computers, and beyond Boolean logic,INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS, Issue 5-6 2007Tamás Roska Abstract Historically, the invention of the stored programmable computer architecture, introduced by John Von Neumann, was also influenced by electrical circuit implementation aspects, as well as tied to fundamental insight of logic reasoning. It can also be considered as a mind-inspired machine. Since then, the implementation of logic gates, control and memories has developed independently of the architecture. The Cellular Wave Computer architecture (IEEE Trans. Circuits Syst. II 1993; 40:163,173; Electron. Lett. 2007; 43:427,449; J. Circuits Syst. Comput. 2003; 5(2):539,562) as a spatial,temporal universal machine on flows has also been influenced by circuit aspects of very large-scale integration (VLSI) technology, as well as some motivating living neural circuits, via the cellular nonlinear (neural) network (CNN). It might be considered as a brain-inspired machine. In this paper, after summarizing the main properties of the Cellular Wave Computer, we highlight a few basic properties of this new kind of computer and computing. In particular, phenomena related to (i) the one-pass solution of a set of implicit equations due to real-time spatial array feedback, (ii) the true random signal array generation via the insertion of the continuous physical noise signals, (iii) the finite synchrony radius due to the functional delay of wires, as well as to (iv) biology relevance. We also show that the Cellular Wave Computer is performing spatial,temporal inference that goes beyond Boolean logic, a characteristic of living neural circuits. Copyright © 2007 John Wiley & Sons, Ltd. [source] DynJAQ: An adaptive and flexible dynamic FAQ systemINTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS, Issue 3 2007David Camacho This article presents a new type of Frequently Asked Questions (FAQ) System, called DynJAQ (Dynamic Java Asked Questions) that has been designed with the purpose of making learning more appealing to beginner students of engineering disciplines and overcome the inconvenience of these systems. DynJAQ is able to generate dynamically several HTML guides that can be used to answer any possible question about a particular programming language (Java), although it can be easily extended to any other topic. DynJAQ integrates case-based knowledge into a graph-based representation that can be easily learned and managed. The combination of both case-based knowledge and graphs allows it to implement a flexible hierarchical structures (or learning graphs) that have been applied to implement a new kind of Frequently Asked Questions Systems. In these systems the output is dynamically built from the user query, using as basis structures the knowledge retrieved from a Case Base. The management of these cases allows enriching the knowledge base. © 2007 Wiley Periodicals, Inc. Int J Int Syst 22: 303,318, 2007. [source] Approaches to knowledge reductions in inconsistent systemsINTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS, Issue 9 2003Wen-Xiu Zhang This article deals with approaches to knowledge reductions in inconsistent information systems (ISs). The main objective of this work was to introduce a new kind of knowledge reduction called a maximum distribution reduct, which preserves all maximum decision classes. This type of reduction eliminates the harsh requirements of the distribution reduct and overcomes the drawback of the possible reduct that the derived decision rules may be incompatible with the ones derived from the original system. Then, the relationships among the maximum distribution reduct, the distribution reduct, and the possible reduct were discussed. The judgement theorems and discernibility matrices associated with the three reductions were examined, from which we can obtain approaches to knowledge reductions in rough set theory (RST). © 2003 Wiley Periodicals, Inc. [source] Design and implementation of Anycast communication model in IPv6INTERNATIONAL JOURNAL OF NETWORK MANAGEMENT, Issue 3 2009Xiaonan Wang The existing designs for providing Anycast services are either to confine each Anycast group to a preconfigured topological region or to distribute members of Anycast groups over global regions. The former brings an Anycast scalability problem and the latter causes the routing tables to grow proportionally to the number of all global Anycast groups in the entire Internet. Therefore, both of the above designs restrict and hinder the application and development of Anycast services. A new kind of Anycast communication model is proposed in this paper which solves some existing problems, such as scalability and communication errors between clients and servers. In this paper, the Anycast communication model is analyzed in depth and discussed, and the experimental data of this Anycast communication model demonstrate its feasibility and validity. [source] A scheme for solving Anycast scalability in IPv6INTERNATIONAL JOURNAL OF NETWORK MANAGEMENT, Issue 4 2008Wang Xiaonan The existing designs for providing Anycast services are either to confine Anycast groups to a preconfigured topological region or to distribute Anycast groups globally across the whole Internet. The latter causes routing tables to grow proportionally to the number of global Anycast groups in the entire Internet and both of the above designs restrict and hinder the application and development of Anycast services. A new kind of Anycast communication scheme is proposed in this paper. This scheme adopts a novel Anycast address structure which can achieve a dynamic Anycast group while allowing Anycast members to freely leave and join the Anycast group without geographical restriction and it effectively solves the expanding explosion of the Anycast routing table. In addition, this scheme can evenly disperse Anycast request messages from clients across the Anycast servers of one Anycast group, thus achieving load balance. This paper analyzes the communication scheme in depth and discusses its feasibility and validity. The experimental data in IPv6 simulation demonstrate that the TRT (Total Response Time) of one Anycast service (e.g., file downloading) acquired through this communication scheme is shorter by 15% than that through the existing Anycast communication scheme. Copyright © 2007 John Wiley & Sons, Ltd. [source] Violence in Bloomsbury: A Theological ChallengeINTERNATIONAL JOURNAL OF SYSTEMATIC THEOLOGY, Issue 3 2006OLIVER DAVIES The terrorist attacks in London on 7 July 2005 are subjected to hermeneutical analysis as cultural and political signs, and are seen to reflect an extreme version of religious and social incommensurability. They present a theological challenge, the response to which is the development of a positive theological account of world. This comes into view in London, the ,City of the Incommensurable', in a special way, since it is nevertheless a domain of negotiated time and space and an environment held by many in common. This environment of pluralism and proximity is taken to be both iconic of globalization and a particularly dynamic locus of its many instantiations. The intersection of global and local, and the kinds of encounters it supports, argue for a new kind of theology which, with all its proper resources in scripture, doctrine and tradition, can recognize the world as sphere of common human interests and practices, and can allow itself to become, in accordance with its own incarnational ground, an agent of transformation within it. [source] Resurgent Metropolis: Economy, Society and Urbanization in an Interconnected WorldINTERNATIONAL JOURNAL OF URBAN AND REGIONAL RESEARCH, Issue 3 2008ALLEN J. SCOTT Abstract An urban problematic is identified by reference to the essential characteristics of cities as spatially polarized ensembles of human activity marked by high levels of internal symbiosis. The roots of the crisis of the classical industrial metropolis of the twentieth century are pinpointed, and the emergence of a new kind of urban economic dynamic over the 1980s and 1990s is discussed. I argue that this new dynamic is based in high degree upon the growth and spread of cognitive-cultural production systems. Along with these developments have come radical transformations of urban space and social life, as well as major efforts on the part of many cities to assert a role for themselves as national and international cultural centers. This argument is the basis of what we might call the resurgent metropolis hypothesis. The effects of globalization are shown to play a critical role in the genesis and geography of urban resurgence. Three major policy dilemmas of resurgent cities are highlighted, namely, their internal institutional fragmentation, their increasing character as economic agents on the world stage and the concomitant importance of collective approaches to the construction of localized competitive advantage, and their deepening social disintegration and segmentation. Résumé Une problématique urbaine est dégagée à propos des caractéristiques essentielles des villes définies comme des ensembles d'activité humaine polarisés dans l'espace et marqués par une symbiose interne poussée. Les racines de la crise qu'a subie la métropole industrielle classique au xxe siècle sont mises en évidence. Est aussi étudié un nouveau type de dynamique économique urbaine apparu au cours des années 1980-1990, cette dynamique étant largement fondée sur la croissance et la diffusion des systèmes de production cognitifs culturels. Parallèlement à ces évolutions, l'espace urbain et la vie sociale ont connu des transformations radicales, et nombre de villes ont entrepris de revendiquer un rôle de centre culturel national et international. Cet argument est à la base de ce qu'on pourrait appeler l'hypothèse d'une résurgence des métropoles. Il est montré que les effets de la mondialisation ont compté de façon cruciale dans la genèse et la géographie de la résurgence urbaine. Trois grands dilemmes politiques des ,villes résurgentes' sont soulignés: leur fragmentation institutionnelle interne; l'accentuation de leur place d'agents économiques sur la scène mondiale et l'importance concomitante des approches collectives pour construire des avantages concurrentiels localisés; ainsi que l'intensification de leur désintégration et de leur segmentation sociales. [source] Rezoned for Business: How Eco-Tourism Unlocked Black Farmland in Eastern ZimbabweJOURNAL OF AGRARIAN CHANGE, Issue 4 2001David McDermott Hughes Eco-tourism is undermining black smallholders' entitlement to land in Zimbabwe. In the 1890s, British administrators restrained whites from alienating the whole of the country by demarcating native reserves. In terms of this limited aim, the policy of native reserves worked. It ensured a land base for black agriculture, particularly for women and children. In the late 1980s, however, CAMPFIRE (Communal Areas Management Programme for Indigenous Resources) invited the tourism industry to begin operations in the lowland reserves. These ?rms have claimed land, made money and relocated smallholders. Based on economic and ecological arguments, CAMPFIRE has rede ?ned the black entitlement as merely a claim competing with those of other ,stakeholders'. No guarantees exist for residents and cultivators. Indeed, government and NGOs are fast transforming the lowland reserves into privileged and subsidized investment zones. Held in check for a century, a new kind of settler colonialism is sweeping down from the highlands. [source] The formal Darwinism project: a mid-term reportJOURNAL OF EVOLUTIONARY BIOLOGY, Issue 4 2007A. GRAFEN Abstract For 8 years I have been pursuing in print an ambitious and at times highly technical programme of work, the ,Formal Darwinism Project', whose essence is to underpin and formalize the fitness optimization ideas used by behavioural ecologists, using a new kind of argument linking the mathematics of motion and the mathematics of optimization. The value of the project is to give stronger support to current practices, and at the same time sharpening theoretical ideas and suggesting principled resolutions of some untidy areas, for example, how to define fitness. The aim is also to unify existing free-standing theoretical structures, such as inclusive fitness theory, Evolutionary Stable Strategy (ESS) theory and bet-hedging theory. The 40-year-old misunderstanding over the meaning of fitness optimization between mathematicians and biologists is explained. Most of the elements required for a general theory have now been implemented, but not together in the same framework, and ,general time' remains to be developed and integrated with the other elements to produce a final unified theory of neo-Darwinian natural selection. [source] CHRACTERIZATION AND 1,1-DIPHENYL-2-PICRYLHYDRAZYL RADICAL SCAVENGING ACTIVITY OF METHANOL AND SUPERCRITICAL CARBON DIOXIDE EXTRACTS FROM LEAVES OF ADINANDRA NITIDAJOURNAL OF FOOD BIOCHEMISTRY, Issue 4 2008BENGUO LIU ABSTRACT Leaves of Adinandra nitida are consumed in southern China as health tea (Shiyacha) and as herbal medicine. In this study, the methanol and supercritical fluid extracts from leaves of A. nitida were obtained by traditional solvent extraction and supercritical carbon dioxide extraction, respectively. Both the extracts showed high 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity. By using ultraviolet-visible spectrometry (UV), infrared spectrometry (IR), nuclear magnetic resonance, electrospray ionization mass spectrometry (ESI-MS), high-performance liquid chromatography-ESI/MS, the main bioactive constituents in the methanol extract (ME) were identified as camellianin A, camellianin B, apigenin. By analysis of gas chromatography-mass spectrometry, a total of 16 compounds accounting for 98.79% of the supercritical fluid extract (SFE) were identified as ,-sitosterol, vitamin E, ,-tocopherol and so on. These compounds found in ME and SFE could contribute to the DPPH radical scavenging performance of the extracts in this study. PRACTICAL APPLICATION Adinandra nitida is a kind of particular wild plant in South China. Few reports have been published about it in the world. In this study, the methanol and supercritical fluid extracts from leaves of A. nitida were respectively obtained by two kinds of industrially significant methods, traditional solvent extraction and supercritical carbon dioxide extraction. By using ultraviolet-visible spectrometry (UV), infrared spectrometry (IR), nuclear magnetic resonance, electrospray ionization mass spectrometry (ESI-MS), high-performance liquid chromatography-ESI/MS, gas chromatography-MS, the main bioactive constituents in the two extracts were identified as flavonoids and plant sterols. Both the extracts showed high 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity and this activity of the flavonoid-rich methanol extract was 10 times more than that of butylated hydroxytoluene. These results showed that leaves of A. nitida is a new kind of natural antioxidant-rich, flavonoid-rich plant source with great commercial interest in the food and phytopharmaceutical market. [source] Non-biaryl atropisomers. part 1. configurationally stable 1,2-diaryl-3-methyl-1,4,5,6-tetrahydropyrimidinium saltsJOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 5 2001Maria B. García In the present communication we describe two examples of a new kind of configurationally stable non-biaryl atropisomers in which the Ar-N bond is the chiral axis, namely 1-(o -nitrophenyl)-2-aryl-3-methyl-1,4,5,6-tetrahydropyrimidinium iodides 1. Stereochemical features of such compounds are analyzed on the basis of their 1H and 13C one- and two-dimensional nmr spectra. A comparison is made with the corresponding amidines 2. [source] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||