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Resurgence
Kinds of Resurgence Selected AbstractsInformation Technology and the World Growth ResurgenceGERMAN ECONOMIC REVIEW, Issue 2 2007Dale W. Jorgenson Growth; investment; productivity; information technology Abstract. This paper analyzes the impact of investment in information technology (IT) on the recent resurgence of world economic growth. We describe the growth of the world economy, seven regions, and 14 major economies during the period 1989,2004. We allocate the growth of world output between input growth and productivity and find, surprisingly, that input growth greatly predominates! Moreover, differences in per capita output levels are explained by differences in per capita input, rather than variations in productivity. The contributions of IT investment have increased in all regions, but especially in industrialized economies and Developing Asia. [source] New Languages of the State: Indigenous Resurgence and the Politics of Knowledge in Bolivia.JOURNAL OF LATIN AMERICAN & CARIBBEAN ANTHROPOLOGY, Issue 1 2010By Bret Gustafson, Durham No abstract is available for this article. [source] Remission and Resurgence of Anxiety-Like Behavior Across Protracted Withdrawal Stages in Ethanol-Dependent RatsALCOHOLISM, Issue 9 2007Yu Zhao Background:, Alcohol dependence is a chronic disorder in which withdrawal symptoms often persist after detoxification. The purpose of the present experiment was to characterize susceptibility to stress and anxiogenic stimuli in rats over an extended time period following ethanol withdrawal. Methods:, Male Wistar rats were made dependent via ethanol vapor exposure. The rats were then tested in the elevated plus-maze during acute ethanol withdrawal (ACW, ,8 hour), early "protracted" withdrawal (EPW, 2 weeks), or late "protracted" withdrawal (LPW, 6, 12 weeks) following brief restraint or no stress. Principal components analysis was used to identify constructs underlying plus-maze behavior. Results:, Three factors characterized plus-maze performance: anxiety, locomotor activity, and risk assessment/decision making. Spontaneous anxiety-like behavior was increased during ACW, decreased to levels of ethanol-naïve controls during EPW, but markedly resurged during LPW. Withdrawal did not alter sensitivity to the anxiety-like effects of restraint stress. All ethanol-dependent rats showed locomotor hypoactivity that, in contrast to anxiety, remained stable throughout all withdrawal stages. Neither ethanol withdrawal nor restraint stress altered mean "risk assessment/decision making" scores, though ethanol withdrawal altered the emission of "risk assessment/decision making" behavior in relation to anxiety-like behavior and behavioral activation state. Conclusions:, The findings illustrate and model the spontaneous, severe, and long-lasting nature of behavioral abnormalities that accompany withdrawal from chronic, intermittent ethanol intoxication. The dynamic remission and resurgence in symptoms of negative affect (i.e., behavioral signs of anxiety) during "protracted" withdrawal may complicate recovery from alcoholism. [source] Social Correlates of Party System Demise and Populist Resurgence in VenezuelaLATIN AMERICAN POLITICS AND SOCIETY, Issue 3 2003Kenneth M. Roberts ABSTRACT Considering its strong, highly institutionalized two-party system, Venezuela was surely one of the least likely countries in Latin America to experience a party system breakdown and populist resurgence. That traditional party system nevertheless was founded on a mixture of corporatist and clientelist linkages to social actors that were unable to withstand the secular decline of the oil economy and several aborted attempts at market liberalization. Successive administrations led by the dominant parties failed to reverse the economic slide, with devastating consequences for the party system as a whole. The party system ultimately rested on insecure structural foundations; and when its social moorings crumbled in the 1990s, the populist movement of Hugo Chávez emerged to fill the political void. This populist resurgence both capitalized on and accelerated the institutional decomposition of the old order. [source] Impact of off-pump coronary artery bypass surgery on postoperative renal dysfunction: Current best available evidence (Review Article)NEPHROLOGY, Issue 4 2006SHAHZAD G RAJA SUMMARY: Renal dysfunction is a serious complication after coronary artery bypass surgery with cardiopulmonary bypass. Cardiopulmonary bypass-related non-pulsatile flow, hypothermia, haemolysis, systemic inflammatory reactions and emboli are mentioned as possible causes for this postoperative renal dysfunction. In an attempt to avoid these deleterious effects of cardiopulmonary bypass, off-pump coronary artery bypass surgery has been rediscovered. Resurgence of interest in off-pump coronary artery bypass surgery is associated with the expectation that avoiding deleterious effects of the cardiopulmonary bypass leads to better outcomes and possibly decreased costs and resource use. We are currently practising in an era of evidence-based medicine that mandates the prospective randomized controlled trial as the most accurate tool for determining a treatment benefit compared with a control population. The present review article attempts to evaluate the current best available evidence from randomized controlled trials on the impact of off-pump coronary artery bypass surgery on postoperative renal dysfunction. [source] Prevalence and risk factors of vitamin D deficiency rickets in Hokkaido, JapanPEDIATRICS INTERNATIONAL, Issue 4 2009Kumihiro Matsuo Abstract Background:, Resurgence of vitamin D deficiency rickets has been recognized worldwide. While many cases of this disease have been reported in Hokkaido, the northern island of Japan, no prevalence data is available. Here, we investigated the prevalence and risk factors of vitamin D deficiency rickets in Hokkaido. Methods:, A specially designed questionnaire was sent to 84 major pediatric departments of hospitals in Hokkaido to collect information of the confirmed cases between July 1999 and June 2004. Results:, Sixty-seven hospitals responded to the questionnaire. Of these, 20 hospitals reported 31 confirmed cases. All the patients were infants and toddlers, less than 4 years of age. The prevalence of cases in a recent year was estimated to be nine in 100 000 children under four years of age. Most of the 31 cases in our study were breast-fed. Eleven cases showed signs of malnutrition due to unbalanced diet or dietary restriction. Furthermore, the prevalence of cases was higher in the northeastern region than in the southwestern region. The number of cases increased gradually from the end of winter to spring. Conclusions:, This is the first report ascertaining the prevalence of vitamin D deficiency rickets in Hokkaido, Japan. Limited exposure to sunlight and inadequate diet in early childhood are key risk factors of this disease. Thus, it is crucial to introduce active recommendations for vitamin D supplementation based on age, residential area, and to advocate public awareness for preventing this disease. [source] Green peach aphid, Myzus persicae (Hemiptera: Aphididae), reproduction during exposure to sublethal concentrations of imidacloprid and azadirachtinPEST MANAGEMENT SCIENCE (FORMERLY: PESTICIDE SCIENCE), Issue 2 2009G Christopher Cutler Abstract BACKGROUND: Resurgence of insect pests following insecticide applications is often attributed to natural enemy disturbance, but hormesis could be an alternative or additional mechanism. Green peach aphid, Myzus persicae (Sulzer), is an important insect pest of many crops worldwide that may be exposed to sublethal insecticide concentrations over time. Here, the hypothesis that exposure to low concentrations of imidacloprid and azadirachtin can induce hormetic responses in M. persicae is tested in the laboratory. RESULTS: When insects were exposed to potato leaf discs dipped in sublethal concentrations of insecticide, almost all measured endpoints,adult longevity, F1 production, F1 survival and F2 production,were affected, and a statistically significant (P < 0.05) stimulatory response was recorded for F2 production following exposure to imidacloprid. No other measures for hormesis were statistically significant, but other trends of hormetic response were consistently observed. CONCLUSIONS: Given that variable distribution and degradation of insecticides in the field would result in a wide range of concentrations over time and space, these laboratory experiments suggest that exposure to sublethal concentrations of imidacloprid and azadirachtin could stimulate reproduction in M. persicae. Copyright © 2008 Society of Chemical Industry [source] Doubt, faith, and knowledge: the reconfiguration of the intellectual field in post-Nasserist CairoTHE JOURNAL OF THE ROYAL ANTHROPOLOGICAL INSTITUTE, Issue 2009Hatsuki Aishima The study of the Islamic Resurgence has underestimated the intellectual trials that some key personalities underwent at a crucial stage of the crisis of post-colonial societies. The intellectual leaders of the Resurgence faced the task to redefine the social value of faith and of its converse, doubt, as the insidious flip-side of processes of modernization. Their response to the challenge contributed to a reconfiguration of the intellectual field: in order to reach larger audiences they reinterpreted their cultural credentials and even life narratives in terms of the communicative standards suitable to new media. This paper analyses how the motives of doubt and faith in the trajectories of two personalities aspiring to the status of ,Islamic intellectual' (the Sufi scholar and Shaykh al-Azhar ,Abd al-Halim Mahmud and the media-savvy lay thinker Mustafa Mahmud) contributed to a reconfiguration of the intellectual field. We investigate how their legacy is presently discussed among educated audiences. Finally, we show how the ambivalence of the reception of their public teaching reflects the troubled search for a new ideological balance by the Egyptian middle classes. Résumé L'étude de la Résurgence islamique a sous-estimé les épreuves intellectuelles par laquelle sont passés certains de ses grands noms à un stade crucial de la crise des sociétés postcoloniales. Les meneurs intellectuels de la Résurgence se sont trouvés confrontés à la tâche de redéfinir la valeur sociale de la foi et de son opposé, le doute, comme le revers insidieux des processus de modernisation. En relevant ce défi, ils ont contribuéà reconfigurer le champ intellectuel : pour atteindre un public plus large, ils ont réinterprété leurs références culturelles et même leurs récits de vies selon les standards de communication adaptés aux nouveaux médias. Les auteurs analysent ici la façon dont les motifs du doute et de la foi dans la trajectoire de deux personnalités aspirant au statut « d'intellectuel islamique », l'érudit soufi Shaykh al-Azhar ,Abd al-Halim Mahmud et le penseur laïque Mustafa Mahmud, fin connaisseur des média, ont contribuéà la reconfiguration du champ intellectuel. Les auteurs étudient le débat dont leur héritage fait aujourd'hui l'objet dans les cercles éduqués. Pour finir, ils montrent comment l'ambivalence de l'accueil fait à leur enseignement public reflète la difficile recherche d'un équilibre idéologique dans les classes moyennes égyptiennes. [source] Globalization and Religious Resurgence: An Historical PerspectiveTHE MUSLIM WORLD, Issue 3 2007Majid Tehranian First page of article [source] Mapping Common Futures: Customary Communities, NGOs and the State in Indonesia's Reform EraDEVELOPMENT AND CHANGE, Issue 1 2005Carol Warren The post-Suharto ,Reform Era' has witnessed explosive revitalization movements among Indonesia's indigenous minorities or ,customary'(adat) communities attempting to redress the disempowerment they suffered under the former regime. This study considers the current resurgence of customary claims to land and resources in Bali, where the state-sponsored investment boom of the 1990s had severe social and environmental impacts. It focuses on recent experiments with participatory community mapping, aimed at reframing the relationship between state and local institutions in planning and decision-making processes. Closely tied to the mapping and planning strategy have been efforts to strengthen local institutions and to confront the problems of land alienation and community control of resources. The diversity of responses to this new intervention reflects both the vitality and limitations of local adat communities, as well as the contributions and constraints of non-governmental organizations that increasingly mediate their relationships to state and global arenas. This ethnographic study explores participants' experiences of the community mapping programme and suggests its potential for developing ,critical localism' through long-term, process-oriented engagements between communities, governments, NGOs, and academic researchers. [source] Neurological complications in two children with Lemierre syndromeDEVELOPMENTAL MEDICINE & CHILD NEUROLOGY, Issue 8 2010BASHEER PEER MOHAMED Lemierre syndrome is a distinct clinical syndrome comprising oropharyngeal sepsis and fever, internal jugular vein thrombosis and remote septic metastases caused by Fusobacterium species. The mortality rate was historically high and although use of antibiotics led to a dramatic fall in incidence, a resurgence has been seen recently. A 14-year-old male developed Lemierre syndrome after tonsillitis. There was extensive leptomeningitis, especially over the clivus, causing 6th and 12th cranial nerve palsies, a clinical feature termed the ,clival syndrome'. He also developed an epidural abscess in the cervical spine, which was unsafe for surgical drainage. Conservative treatment with an extended course of antibiotics and anticoagulation for jugular vein thrombosis led to a good recovery. A 15-year-old female developed Lemierre syndrome after a persistent sore throat lasting 7 weeks. She had palsy of the 12th cranial nerve from clival osteomyelitis. She was treated with a 6-week course of antibiotics and anticoagulants leading to almost full recovery at 3-month review. Awareness of the potential neurological complications of Lemierre syndrome and prompt management are crucial in reducing morbidity and mortality in this ,forgotten disease'. [source] Reflections on smoking relapse researchDRUG AND ALCOHOL REVIEW, Issue 1 2006SAUL SHIFFMAN Abstract This paper presents personal reflections on the history, current status and the future of research on smoking relapse. Relapse was traditionally viewed primarily as an outcome, to be reduced with increased treatment. In the 1980s, relapse research was invigorated by a focus on the process of relapse, focusing on the specific situations in which lapses to smoking occurred, and on the processes that mediated progression from a lapse to a relapse. This line of research had substantial influence on treatment, but has currently been displaced by a return to a pure outcomes-focus, driven in part by the practical need to find treatments that work and to package them for dissemination. At the same time, technological and methodological developments have enabled detailed monitoring of experience and behaviour throughout the relapse process, and progression of these developments will make monitoring of relapse process compelling in the future. The need to understand how interventions work will also drive a resurgence of research on the relapse process. Finally, the same technological and conceptual developments that enable detailed monitoring of behaviour will spawn the development of just-in-time interventions that are offered and implemented as needed, rather than being addressed in the abstract in advance of the need [source] Species abundance distributions over timeECOLOGY LETTERS, Issue 5 2007Anne E. Magurran Abstract It has been known for 50 years that the time period over which data are collected affects the shape of empirical species abundance distributions. However, despite a recent resurgence of interest in characterizing and explaining these patterns the temporal component of species abundance distributions has been largely ignored. I argue that it is essential to take account of time, and not only because sampling duration can have a profound influence on the perceived shape of the distribution. Partitions of species abundance distributions based on temporal occurrence in the record will facilitate tests of both biological and neutral models and may lead to a better understanding of rarity. These temporal partitions also have interesting, but as yet barely explored, parallels with spatial ones such as the core-satellite division. Moreover, changes in abundance distributions across all three of Preston's temporal scales (sampling time, ecological time and evolutionary time) present rich opportunities for ecological research. [source] Anatomy of employment growthECONOMIC POLICY, Issue 34 2002Pietro Garibaldi Summary This paper studies net employment growth across 21 OECD economies since 1980, focusing on the wide range of experiences within the European Union. The initial composition of employment across sectors is relevant in a few countries, but can only partially account for cross-country differences in net employment growth. Institutions play a more important role. A policy package including low dismissal costs and low taxation is significantly associated with high net employment growth and can account for a substantial share of cross-country differences. While the Netherlands' employment miracle is largely accounted for by an increase in part-time jobs for women aged 25,49 in the services sector, we find that in the whole sample part-time jobs largely replace full-time jobs, and temporary jobs replace permanent jobs, with small net effects on hours worked. Continental Europe did not increase employment as much as other OECD countries until the mid-1990s, but later appears to be staging a resurgence of employment growth. We argue that this resurgence is not merely cyclical, is likely related to reforms, and may well be there to stay. [source] Time-distributed effect of exposure and infectious outbreaksENVIRONMETRICS, Issue 3 2009Elena N. Naumova Abstract Extreme weather affects the timing and intensity of infectious outbreaks, the resurgence and redistribution of infections, and it causes disturbances in human-environment interactions. Environmental stressors with high thermoregulatory demands require susceptible populations to undergo physiological adaptive processes potentially compromising immune function and increasing susceptibility to infection. In assessing associations between environmental exposures and infectious diseases, failure to account for a latent period between time of exposure and time of disease manifestation may lead to severe underestimation of the effects. In a population, health effects of an episode of exposure are distributed over a range of time lags. To consider such time-distributed lags is a challenging task given that the length of a latent period varies from hours to months and depends on the type of pathogen, individual susceptibility to the pathogen, dose of exposure, route of transmission, and many other factors. The two main objectives of this communication are to introduce an approach to modeling time-distributed effect of exposures to infection cases and to demonstrate this approach in an analysis of the association between high ambient temperature and daily incidence of enterically transmitted infections. The study is supplemented with extensive simulations to examine model sensitivity to response magnitude, exposure frequency, and extent of latent period. Copyright © 2008 John Wiley & Sons, Ltd. [source] Mechanisms and consequences of bladder cell invasion by uropathogenic Escherichia coliEUROPEAN JOURNAL OF CLINICAL INVESTIGATION, Issue 2008B. K. Dhakal ABSTRACT Strains of uropathogenic Escherichia coli (UPEC) are the major cause of urinary tract infections worldwide. Multiple studies over the past decade have called into question the dogmatic view that UPEC strains act as strictly extracellular pathogens. Rather, bacterial expression of filamentous adhesive organelles known as type 1 pili and Afa/Dr fibrils enable UPEC to invade host epithelial cells within the urinary tract. Entry into bladder epithelial cells provides UPEC with a protected niche where the bacteria can persist quiescently for long periods, unperturbed by host defences and protected from many antibiotic treatments. Alternately, internalized UPEC can rapidly multiply, forming large intracellular inclusions that can contain several thousand bacteria. Initial work aimed at defining the host and bacterial factors that modulate the entry, intracellular trafficking, and eventual resurgence of UPEC suggests a high degree of host-pathogen crosstalk. Targeted disruption of these processes may provide a novel means to prevent and treat recurrent, relapsing and chronic infections within the urinary tract. [source] Review of the functional surgical treatment of dystoniaEUROPEAN JOURNAL OF NEUROLOGY, Issue 5 2001Paul Krack A review of functional surgery for dystonia is presented. Recently renewed interest in stereotaxy for dystonia has followed the resurgence of pallidotomy and the introduction of deep brain stimulation (DBS) in Parkinson's disease (PD) in the early 1990s. However, even since the 1950s, small series of patients treated with ablative surgery have been carefully studied, providing useful information, notably regarding the tolerability of surgery. In the setting of dystonia, thalamotomy was first performed with substantial benefits, but some authors outlined the great variability in outcome, and the high incidence of operative side-effects. In the ,modern' era of functional surgery for movement disorders, the globus pallidus internus (GPi) has emerged to be currently the best target for dystonia, based on small series of patients published in the last few years. Both bilateral posteroventral pallidotomy (PVP) and bilateral pallidal stimulation, performed by several teams, have benefited a variety of patients with severe dystonia, the most dramatic improvements being seen in primary dystonia with a mutation in the DYT1 gene. Whereas patients with secondary dystonia have often shown a lesser degree of improvement, some publications have nevertheless reported major benefit. There is today a strong need for carefully controlled studies comparing secondary and primary dystonia, DYT1 and non-DYT1 dystonia, ablative surgery and DBS, with additional assessment of neuropsychological changes, especially in children treated with bilateral pallidal procedures. [source] Moment of Stasis: The Successful Failure of a Constitution for EuropeEUROPEAN LAW JOURNAL, Issue 3 2009Andreas Philippopoulos-Mihalopoulos The 2005 French and Dutch negative votes on the Constitution open up a space of conceptualisation, not only of Europe's relation to its demos, but significantly to its failures. Through a critical analysis of mainly Niklas Luhmann's systems theory, the article proposes taking a distance from traditional constitutional dogmatics that are no longer capable of dealing with the paradox of contemporary society, and more specifically with the eventual resurgence of the European project as one of absence and stasis: the two terms are used to explain the need, on the one hand, to maintain the ,absent community' of Europe, and, on the other, to start realising that any conceptualisation of the European project will now have to take place in that space of instability and contingency revealed by the constitutional failure. The relation between law and politics, the location of a constitution, the distinction between social and normative legitimacy, the connection between European identity and demos, and the concept of continuity between constitutional text and context are revisited in an attempt to trace the constitutional failure as the constitutional moment par excellence. [source] Characterization of Bordetella pertussis clinical isolates that do not express the tracheal colonization factorFEMS IMMUNOLOGY & MEDICAL MICROBIOLOGY, Issue 1 2007Marjolein Van Gent Abstract Bordetella pertussis, the causative agent of whooping cough, has remained endemic and there is a resurgence in some countries despite vaccination. Bordetella pertussis produces a wide range of virulence factors which are assumed to play an important role in infection and transmission, including tracheal colonization factor (TcfA). Here we show that clinical isolates belonging to distinct lineages may lose their ability to produce TcfA. Irreversible and reversible loss occurred, respectively, by recombination between repeats leading to deletion of the tcfA gene and by mutations in a polymorphic G-track. These phenomena may reflect adaptation to distinct niches. [source] Stocking piscivores to improve fishing and water clarity: a synthesis of the Lake Mendota biomanipulation projectFRESHWATER BIOLOGY, Issue 12 2002R. C. Lathrop SUMMARYY 1.,A total of 2.7 × 106 walleye fingerlings and 1.7 × 105 northern pike fingerlings were stocked during 1987,99 in eutrophic Lake Mendota. The objectives of the biomanipulation were to improve sport fishing and to increase piscivory to levels that would reduce planktivore biomass, increase Daphnia grazing and ultimately reduce algal densities in the lake. The combined biomass of the two piscivore species in the lake increased rapidly from < 1 kg ha,1 and stabilised at 4,6 kg ha,1 throughout the evaluation period. 2.,Restrictive harvest regulations (i.e. increase in minimum size limit and reduction in bag limit) were implemented in 1988 to protect the stocked piscivores. Further restrictions were added in 1991 and 1996 for walleye and northern pike, respectively. These restrictions were essential because fishing pressure on both species (especially walleye) increased dramatically during biomanipulation. 3.,Commencing in 1987 with a massive natural die-off of cisco and declining yellow perch populations, total planktivore biomass dropped from about 300,600 kg ha,1 prior to the die-off and the fish stocking, to about 20,40 kg ha,1 in subsequent years. These low planktivore biomasses lasted until a resurgence in the perch population in 1999. 4.,During the period prior to biomanipulation when cisco were very abundant, the dominant Daphnia species was the smaller-bodied D. galeata mendotae, which usually reached a biomass maximum in June and then crashed shortly thereafter. Beginning in 1988, the larger-bodied D. pulicaria dominated, with relatively high biomasses occurring earlier in the spring and lasting well past mid-summer of many years. 5.,In many years dominated by D. pulicaria, Secchi disc readings were greater during the spring and summer months when compared with years dominated by D. galeata mendotae. During the biomanipulation evaluation period, phosphorus (P) levels also changed dramatically thus complicating our analysis. Earlier research on Lake Mendota had shown that Daphnia grazing increased summer Secchi disc readings, but P concentrations linked to agricultural and urban runoff and to climate-controlled internal mixing processes were also important factors affecting summer readings. 6.,The Lake Mendota biomanipulation project has been a success given that high densities of the large-bodied D. pulicaria have continued to dominate for over a decade, and the diversity of fishing opportunities have improved for walleye, northern pike and, more recently, yellow perch. 7.,Massive stocking coupled with very restrictive fishing regulations produced moderate increases in piscivore densities. Larger increases could be realised by more drastic restrictions on sport fishing, but these regulations would be very controversial to anglers. 8.,If the lake's food web remains in a favourable biomanipulation state (i.e. high herbivory), further improvements in water clarity are possible with future reductions in P loadings from a recently initiated non-point pollution abatement programme in the lake's drainage basin. [source] THIS IS NOT AMERICA: EMBEDDING THE COGNITIVE-CULTURAL URBAN ECONOMYGEOGRAFISKA ANNALER SERIES B: HUMAN GEOGRAPHY, Issue 2 2010Robert C. Kloosterman ABSTRACT. The aim of this article is to broaden the epistemological basis for investigating the current shift to cognitive-cultural economies and the resurgence of cities and its socio-spatial articulation. The point of departure here is that the drivers of the structural changes are indeed more or less ubiquitous, but are played out in different national institutional and urban contexts resulting in potentially diverging cognitive-cultural economies. Four main drivers of change after 1980 are distinguished. The first is the rise of a new technological paradigm based on digital technology. The second is the thrust towards deregulation and privatization as planks of the neo-liberal political programme. The third is the intensification of all kinds of linkages between regions across the globe. The fourth driver constitutes the processes of individualization and increasing reflexivity that have fragmented consumer markets. By identifying distinct filters which might shape and mould the impact of these more general drivers on concrete urban areas, a comprehensive framework is presented that can be used to analyse and compare the trajectories of cities while linking them to a larger narrative of societal change. A central line of reasoning is that agglomeration economies , pivotal in Allen Scott's analysis of the emergence of a cognitive-cultural economy , are themselves embedded in concrete social and institutional contexts which impact on how they are played out. To make this point, we build upon Richard Whitley's business systems. Given this institutional diversity, we expect that various institutional contexts will generate different cognitive-cultural economies. [source] Information Technology and the World Growth ResurgenceGERMAN ECONOMIC REVIEW, Issue 2 2007Dale W. Jorgenson Growth; investment; productivity; information technology Abstract. This paper analyzes the impact of investment in information technology (IT) on the recent resurgence of world economic growth. We describe the growth of the world economy, seven regions, and 14 major economies during the period 1989,2004. We allocate the growth of world output between input growth and productivity and find, surprisingly, that input growth greatly predominates! Moreover, differences in per capita output levels are explained by differences in per capita input, rather than variations in productivity. The contributions of IT investment have increased in all regions, but especially in industrialized economies and Developing Asia. [source] Elevation gradients of species-density: historical and prospective viewsGLOBAL ECOLOGY, Issue 1 2001MARK. V. Lomolino Abstract Studies of elevation clines in diversity and composition of ecological communities date back to the origins of biogeography. A modern resurgence of interests in these elevational clines is likely to contribute important insights for developing a more general theory of species diversity. In order to gain a more comprehensive understanding of geographical clines in diversity, the research programme for montane biogeography should include statistically rigorous tests of apparent patterns, comparisons of patterns among regions and taxonomic or ecological groups of species, and analyses of clines in environmental variables concurrent with biogeographical surveys. The conceptual framework for this research programme should be based on the assumption that elevational gradients in species diversity result from a combination of ecological and evolutionary processes, rather than the presumed independent effects of one overriding force. Given that montane ecosystems are hot spots of biological diversity, an expanded and integrated programme for biogeographic surveys in montane regions should provide valuable insights for conservation biologists. [source] Fluorescence of Dissolved Organic Matter as a Natural Tracer of Ground WaterGROUND WATER, Issue 5 2001Andy Baker The fluorescence properties of dissolved organic matter (DOM) in ground water in the Permian limestone of northeast England is determined from six monitoring boreholes, a private water supply well and from a natural resurgence in a flooded collapse doline in the environs of Darlington, County Durham, northeast England. Measurements of both protein and "fulvic-like" fluorescence was undertaken from January to December 1999. The wavelengths of fulvic-like fluorescence excitation and emission and of protein fluorescence emission were all determined to be sensitive fingerprints of organic matter fluxes through the ground water, with water within the till and within both gypsum and limestone strata deep inside the Magnesian Limestone being differentiated by these parameters. Previous research has suggested that proteins in waters are "young" in age, hence our seasonal variations suggest that we are sampling recently formed DOM. The rapid response of all deep borehole samples suggests relatively rapid ground water flow, probably through karstic cave systems developed in the gypsum and solution widened features in the dolomitic limestone. Our results suggest that use of both protein and fulvic-like fluorescence wavelength variations provides a DOM signature that can be used as a natural tracer. [source] Ethnicity, State Violence, and Neo-Liberal Transitions in Post-Communist BulgariaGROWTH AND CHANGE, Issue 2 2000John Pickles State socialist nationalization policies in the 1980s severely impacted the ethnic Turkish and Muslim regions of Bulgaria, while neo-liberal economic strategies have subsequently further deepened their economic crisis. This paper focuses on the ways in which policies of regional economic marginalization, cultural assimilation, and population expulsion have deeply marked the people and places of the Kurdajli region of southeastern Bulgaria. The paper shows how mass unemployment arose quickly after 1989 as a result of the closure of branch-plants, and assesses the role of social networks and non-capitalist economic practices in the Muslim communities during this period of economic immiseration. The paper shows how these legacies of state policy and social practice have provided flexible opportunities for the resurgence of apparel assembly for export, referred to locally as ,Klondike capitalism'. The paper concludes with a discussion of the extent to which the history of violence has influenced the processes of internationalization in the region, and how we are to think about the relationship between regional mass unemployment and sectorally specific industrial revitalization. [source] Hepatitis B virus variants in patients receiving lamivudine treatment with breakthrough hepatitis evaluated by serial viral loads and full-length viral sequencesHEPATOLOGY, Issue 3 2001Chun-Jen Liu Both viral loads and genome variations have been implicated in the pathogenesis of acute exacerbation of chronic hepatitis B. Hepatitis B exacerbation in patients receiving lamivudine treatment represented a unique setting to clarify their importance. Three organ recipients with posttransplantation hepatitis B exacerbation and 3 patients with chronic hepatitis B were studied. All received lamivudine treatment and their alanine aminotransferase (ALT) levels and hepatitis B virus (HBV) loads were regularly followed. Full-length genomic sequences before and during lamivudine treatment were determined in patients who had breakthrough of serum HBV DNA or elevation of serum ALT. Breakthrough of serum HBV DNA occurred after 6 to 15 months of lamivudine treatment in all. A rapid increase of viral load accompanying the emergence of tyrosine-methionine-aspartate-aspartate (YMDD) variant was followed by hepatitis B exacerbation in each patient. The mean number of nucleotide and amino acid substitutions per genome pair was equivalent in immunosuppressed or immunocompetent patients (6.3 vs. 6.3 for nucleotide, P > .05; 6.0 vs. 6.7 for amino acid, P > .05). Changes of nucleotide and amino acid beyond the YMDD motif were distributed along the whole HBV genome but none occurred within the known B-cell epitopes and human leukocyte antigen class I, or II,restricted T-cell epitopes. Our results suggest that a resurgence of viral load rather than changes of the known immunogenic viral epitopes is more closely associated with the development of hepatitis B exacerbation after the emergence of YMDD variants in patients receiving lamivudine treatment. (HEPATOLOGY 2001;34:583-589.) [source] Politics for Better or Worse: Political Nonconformity, the Gambling Dilemma and the North of England Newspaper Company, 1903,1914HISTORY, Issue 286 2002Paul Gliddon Edwardian Britain saw a revival of political activity by nonconformists, who campaigned fervently for the Liberal Party. This resurgence included the purchase of newspapers by nonconformists in the Liberal cause. Many of these nonconformists held strong moral beliefs, and scholars have suggested that there was a tension between such ideals and political practicalities, a tension that caused nonconformists to become disillusioned with political activity and to withdraw from it. However, since such arguments tend to be generalized, this article analyses one example of nonconformists' difficulties, namely those experienced by Liberals who acquired several newspapers in Darlington in 1903. These Liberal nonconformists tried in vain to run The Northern Echo, a paper of note (or notoriety, depending on one's politics), without the betting content they so deplored. This article argues that the episode does demonstrate a tension between high ideals and political practicalities, though the nonconformist response here was a pragmatic and even a mixed one that ensured the survival of a strong Liberal press in north-east England for the next fifty years. It also suggests that, although there was a significant demand for betting content among newspaper audiences, none the less that demand was of a lesser extent than historians have so far supposed. [source] History and Historiography of the English East India Company: Past, Present, and Future!HISTORY COMPASS (ELECTRONIC), Issue 4 2009Philip J. Stern This article explores recent developments in the historiography of the English East India Company. It proposes that there has been an efflorescence of late in scholarship on the Company that is directly tied both to the resurgence of imperial studies in British history as well as to contemporary concerns such as globalization, border-crossings, and transnationalism. These transformations have in turn begun to change some of the most basic narratives and assumptions about the Company's history. At the same time, they have also significantly widened the number and types of scholars interested in the Company, broadening its appeal beyond ,Company studies' to have relevance for a range of historical concerns, in British domestic history, Atlantic history, global history, as well as amongst literary scholars, geographers, sociologists, economists, and others. [source] Timing and connectivity in the human somatosensory cortex from single trial mass electrical activityHUMAN BRAIN MAPPING, Issue 4 2002Andreas A. Ioannides Abstract Parallel-distributed processing is ubiquitous in the brain but often ignored by experimental designs and methods of analysis, which presuppose sequential and stereotypical brain activations. We introduce here a methodology that can effectively deal with sequential and distributed activity. Regional brain activations elicited by electrical median nerve stimulation are identified in tomographic estimates extracted from single trial magnetoencephalographic signals. Habituation is identified in both primary somatosensory cortex (SI) and secondary somatosensory cortex (SII), often interrupted by resurgence of strong activations. Pattern analysis is used to identify single trials with homogeneous regional brain activations. Common activity patterns with well-defined connectivity are identified within each homogeneous group of single trials across the subjects studied. On the contralateral side one encounters distinct sets of single trials following identical stimuli. We observe in one set of trials sequential activation from SI to SII and insula with onset of SII at 60 msec, whereas in the other set simultaneous early co-activations of the same two areas. Hum. Brain Mapping 15:231,246, 2002. © 2002 Wiley-Liss, Inc. [source] Airways infection with virulent Mycobacterium tuberculosis delays the influx of dendritic cells and the expression of costimulatory molecules in mediastinal lymph nodesIMMUNOLOGY, Issue 4 2004Gina S. García-Romo Summary Despite tuberculosis resurgence and extensive dendritic cell (DC) research, there are no in vivo studies evaluating DC within regional lymphoid tissue during airways infection with virulent Mycobacterium tuberculosis (Mtb) H37Rv. Using DC-specific antibodies, immunocytochemistry, flow cytometry and Ziehl,Neelsen (ZN) for bacilli staining, we searched for Mtb and DC changes within mediastinal lymph nodes, after intratracheal (ITT) inoculation of virulent Mtb. ZN and immunocytochemistry in frozen and paraffin sections of mediastinal lymph nodes identified Mtb until day 14 after ITT inoculation, associated with CD11c+ and Dec205+ DC. Analysing CD11c, MHC-CII, and Dec205 combinations by flow cytometry in MLN suspensions revealed that CD11c+/MHC-CII+ and CD11c+/Dec205+ DC did not increase until day 14, peaked on day 21, and sharply declined by day 28. No changes were seen in control, saline-inoculated animals. The costimulatory molecules evaluated in CD11c+ DCs followed a similar trend; the CD80 increase was negligible, slightly surpassed by CD40. CD86 increased earlier and the three markers peaked at day 21, declining by day 28. While antigen-specific proliferation was not evident for MLN CD4+ T cells at 2 weeks postinfection, delayed-type hypersensitivity responses upon ITT inoculation revealed that, as early as day 3 and 7, both the priming and peripheral systemic immune responses were clearly established, persisting until days 14,21. While airways infection with virulent Mtb triggers an early, systemic peripheral response maintained for three weeks, this seems dissociated from regional events within mediastinal lymph nodes, such as antigen-specific T-cell reactivity and a delay in the influx and local activation of DC. [source] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||