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Driving Factors (driving + factor)
Selected AbstractsTHE GEOGRAPHICAL MOSAIC OF COEVOLUTION IN A PLANT,POLLINATOR MUTUALISMEVOLUTION, Issue 1 2008Bruce Anderson Although coevolution is widely accepted as a concept, its importance as a driving factor in biological diversification is still being debated. Because coevolution operates mainly at the population level, reciprocal coadaptations should result in trait covariation among populations of strongly interacting species. A long-tongued fly (Prosoeca ganglbaueri) and its primary floral food plant (Zaluzianskya microsiphon) were studied across both of their geographical ranges. The dimensions of the fly's proboscis and the flower's corolla tube length varied significantly among sites and were strongly correlated with each other. In addition, the match between tube length of flowers and tongue length of flies was found to affect plant fitness. The relationship between flower tube length and fly proboscis length remained significant in models that included various alternative environmental (altitude, longitude, latitude) and allometric (fly body size, flower diameter) predictor variables. We conclude that coevolution is a compelling explanation for the geographical covariation in flower depth and fly proboscis length. [source] Why New Zealand Took Itself out of ANZUS: Observing "Opposition for Autonomy" in Asymmetric Alliances,FOREIGN POLICY ANALYSIS, Issue 4 2010Amy L. Catalinac In 1985, a dispute over nuclear ship visits led the United States to formally suspend its security guarantee to New Zealand under the trilateral ANZUS Treaty. In this article, I conceptualize this dispute as a case of intra-alliance opposition by a small state toward its stronger ally. I generate four hypotheses from the literature on alliances in international relations to explain why New Zealand chose to oppose its ally on the nuclear ships issue. Using new evidence, including interviews with 22 individuals involved in the dispute and content analysis of debates in the New Zealand parliament from 1976 to 1984, I conclude that a desire for greater autonomy in foreign policy was the driving factor behind New Zealand's opposition. [source] Economic determinants of biodiversity change over a 400-year period in the Scottish uplandsJOURNAL OF APPLIED ECOLOGY, Issue 6 2008Nick Hanley Summary 1Economic forces are recognized as an important driving factor behind current biodiversity losses. This study investigates whether such factors have been important in determining one measure of biodiversity change over the ,long run', in our case, 400 years , for upland sites in Scotland. 2A combination of palaeoecological, historical and economic methods is used to construct and then analyse a database of factors contributing to changes in plant diversity over time for 11 upland sites. 3Using an instrumental variables panel model, we find livestock prices, our proxy for grazing pressure, to be a statistically significant determinant of diversity change, with higher grazing pressures resulting in lower diversity values on average, although site abandonment is also found to result in a fall in plant diversity. Technological change, such as the introduction of new animal breeds, was not found to be a statistically significant determinant. 4Using later period data (post 1860) on livestock numbers at the parish (local) level, we were able to confirm the main result noted above (3) in terms of the effects of higher grazing pressures on plant diversity. 5Synthesis and applications. This study shows how data from very different disciplines can be combined to address questions relevant to contemporary conservation and understanding. This novel, interdisciplinary approach provides new insights into the role of economic factors as a driver of biodiversity loss in the uplands. Biodiversity levels have varied considerably over 400 years, partly as a function of land management, suggesting that establishing baselines or ,natural' target levels for biodiversity is likely to be problematic. Changes in livestock grazing pressures brought about by changes in prices had statistically significant effects on estimated plant diversity, as did land abandonment. This suggests that long-term management of upland areas for the conservation of diversity should focus on grazing pressures as a key policy attribute. Another policy implication is that drastic cuts in grazing pressures , such as might occur under current reforms of the Common Agricultural Policy , can have adverse biodiversity consequences. [source] Year-to-year variation in plant competition in a mountain grasslandJOURNAL OF ECOLOGY, Issue 1 2003Herben Summary 1We used a series of removal experiments to examine how species response to competition and climatic differences varied in three different years. We tested the interaction between removal of the dominant grass species, Festuca rubra, and year-to-year environmental variation in a mown mountain grassland. 2In each year, we quantified shoot frequency and above-ground biomass of all remaining plant species. Above-ground responses were tested both by analysis of covariance and by redundancy analysis with randomization tests of changes in total species composition. 3Analysis of above-ground biomass data showed that other species compensated for the removal of F. rubra biomass within 2 years and that the response in total biomass of the community did not differ among years in which the experiment was started. 4Multivariate tests showed that species composition changed as a result of the removal; grass biomass and frequency increased more than that of dicotyledons. However, response of species composition to removal of F. rubra was significantly different between onset years. Specific conditions in individual years thus affect the competitive ability of individual species in a non-additive way. 5Our results indicate that the year-to-year variation at the site has the potential to affect species coexistence and richness. As a consequence, year-to-year variation of climatic parameters may be an important driving factor in community dynamics and should be taken into account in studies of ecosystem response to climate. [source] Detecting Holocene movements of the woodland,steppe ecotone in northern China using discriminant analysisJOURNAL OF QUATERNARY SCIENCE, Issue 3 2001Hongyan Liu Abstract Discriminant functions link vegetation zones and surface pollen along the woodland,steppe ecotone in northern China. These links were utilised to reconstruct palaeovegetation using fossil pollen data from four lake sediment sites within the ecotone. Holocene movements of the vegetation zones were derived from the above results and were interpreted as the results of climatic, topographic and edaphic factors. This study shows that climatic change was the driving factor for ecotonal movement, but that the positions of vegetational zones were nevertheless controlled by topographical and edaphic conditions, and consequently boundaries between different vegetational zones responded individualistically. Copyright © 2001 John Wiley & Sons, Ltd. [source] Opioids and the Management of Chronic Severe Pain in the Elderly: Consensus Statement of an International Expert Panel with Focus on the Six Clinically Most Often Used World Health Organization step III Opioids (Buprenorphine, Fentanyl, Hydromorphone, Methadone, Morphine, Oxycodone)PAIN PRACTICE, Issue 4 2008Joseph Pergolizzi MD ,,Abstract Summary of consensus: 1.,The use of opioids in cancer pain:, The criteria for selecting analgesics for pain treatment in the elderly include, but are not limited to, overall efficacy, overall side-effect profile, onset of action, drug interactions, abuse potential, and practical issues, such as cost and availability of the drug, as well as the severity and type of pain (nociceptive, acute/chronic, etc.). At any given time, the order of choice in the decision-making process can change. This consensus is based on evidence-based literature (extended data are not included and chronic, extended-release opioids are not covered). There are various driving factors relating to prescribing medication, including availability of the compound and cost, which may, at times, be the main driving factor. The transdermal formulation of buprenorphine is available in most European countries, particularly those with high opioid usage, with the exception of France; however, the availability of the sublingual formulation of buprenorphine in Europe is limited, as it is marketed in only a few countries, including Germany and Belgium. The opioid patch is experimental at present in U.S.A. and the sublingual formulation has dispensing restrictions, therefore, its use is limited. It is evident that the population pyramid is upturned. Globally, there is going to be an older population that needs to be cared for in the future. This older population has expectations in life, in that a retiree is no longer an individual who decreases their lifestyle activities. The "baby-boomers" in their 60s and 70s are "baby zoomers"; they want to have a functional active lifestyle. They are willing to make trade-offs regarding treatment choices and understand that they may experience pain, providing that can have increased quality of life and functionality. Therefore, comorbidities,including cancer and noncancer pain, osteoarthritis, rheumatoid arthritis, and postherpetic neuralgia,and patient functional status need to be taken carefully into account when addressing pain in the elderly. World Health Organization step III opioids are the mainstay of pain treatment for cancer patients and morphine has been the most commonly used for decades. In general, high level evidence data (Ib or IIb) exist, although many studies have included only few patients. Based on these studies, all opioids are considered effective in cancer pain management (although parts of cancer pain are not or only partially opioid sensitive), but no well-designed specific studies in the elderly cancer patient are available. Of the 2 opioids that are available in transdermal formulation,fentanyl and buprenorphine,fentanyl is the most investigated, but based on the published data both seem to be effective, with low toxicity and good tolerability profiles, especially at low doses. 2.,The use of opioids in noncancer-related pain:, Evidence is growing that opioids are efficacious in noncancer pain (treatment data mostly level Ib or IIb), but need individual dose titration and consideration of the respective tolerability profiles. Again no specific studies in the elderly have been performed, but it can be concluded that opioids have shown efficacy in noncancer pain, which is often due to diseases typical for an elderly population. When it is not clear which drugs and which regimes are superior in terms of maintaining analgesic efficacy, the appropriate drug should be chosen based on safety and tolerability considerations. Evidence-based medicine, which has been incorporated into best clinical practice guidelines, should serve as a foundation for the decision-making processes in patient care; however, in practice, the art of medicine is realized when we individualize care to the patient. This strikes a balance between the evidence-based medicine and anecdotal experience. Factual recommendations and expert opinion both have a value when applying guidelines in clinical practice. 3.,The use of opioids in neuropathic pain:, The role of opioids in neuropathic pain has been under debate in the past but is nowadays more and more accepted; however, higher opioid doses are often needed for neuropathic pain than for nociceptive pain. Most of the treatment data are level II or III, and suggest that incorporation of opioids earlier on might be beneficial. Buprenorphine shows a distinct benefit in improving neuropathic pain symptoms, which is considered a result of its specific pharmacological profile. 4.,The use of opioids in elderly patients with impaired hepatic and renal function:, Functional impairment of excretory organs is common in the elderly, especially with respect to renal function. For all opioids except buprenorphine, half-life of the active drug and metabolites is increased in the elderly and in patients with renal dysfunction. It is, therefore, recommended that,except for buprenorphine,doses be reduced, a longer time interval be used between doses, and creatinine clearance be monitored. Thus, buprenorphine appears to be the top-line choice for opioid treatment in the elderly. 5.,Opioids and respiratory depression:, Respiratory depression is a significant threat for opioid-treated patients with underlying pulmonary condition or receiving concomitant central nervous system (CNS) drugs associated with hypoventilation. Not all opioids show equal effects on respiratory depression: buprenorphine is the only opioid demonstrating a ceiling for respiratory depression when used without other CNS depressants. The different features of opioids regarding respiratory effects should be considered when treating patients at risk for respiratory problems, therefore careful dosing must be maintained. 6.,Opioids and immunosuppression:, Age is related to a gradual decline in the immune system: immunosenescence, which is associated with increased morbidity and mortality from infectious diseases, autoimmune diseases, and cancer, and decreased efficacy of immunotherapy, such as vaccination. The clinical relevance of the immunosuppressant effects of opioids in the elderly is not fully understood, and pain itself may also cause immunosuppression. Providing adequate analgesia can be achieved without significant adverse events, opioids with minimal immunosuppressive characteristics should be used in the elderly. The immunosuppressive effects of most opioids are poorly described and this is one of the problems in assessing true effect of the opioid spectrum, but there is some indication that higher doses of opioids correlate with increased immunosuppressant effects. Taking into consideration all the very limited available evidence from preclinical and clinical work, buprenorphine can be recommended, while morphine and fentanyl cannot. 7.,Safety and tolerability profile of opioids:, The adverse event profile varies greatly between opioids. As the consequences of adverse events in the elderly can be serious, agents should be used that have a good tolerability profile (especially regarding CNS and gastrointestinal effects) and that are as safe as possible in overdose especially regarding effects on respiration. Slow dose titration helps to reduce the incidence of typical initial adverse events such as nausea and vomiting. Sustained release preparations, including transdermal formulations, increase patient compliance.,, [source] Niche separation of ammonia-oxidizing bacteria across a tidal freshwater marshENVIRONMENTAL MICROBIOLOGY, Issue 11 2008Hendrikus J. Laanbroek Summary Like many functional groups or guilds of microorganisms, the group of ammonia-oxidizing bacteria (AOB) consists of a number of physiologically different species or lineages. These physiological differences suggest niche differentiation among these bacteria depending on the environmental conditions. Species of AOB might be adapted to different zones in the flooding gradient of a tidal marsh. This issue has been studied by sampling sediments from different sites and depths within a tidal freshwater marsh along the river Scheldt near the village of Appels in Belgium. Samples were taken in February, April, July and October 1998. Communities of AOB in the sediment were analysed on the basis of the 16S rRNA gene by application of polymerase chain reaction in combination with denaturing gradient gel electrophoresis (DGGE). In addition, moisture content and concentrations of ammonium and nitrate were determined as well as the potential ammonia-oxidizing activities. Six different DGGE bands belonging to the ,-subclass of the Proteobacteria were observed across the marsh. The community composition of AOB was determined by the elevation in the flooding gradient as well as by the sampling depth. The presence of plants was less important for the community composition of AOB. DGGE bands affiliated with the Nitrosospira lineage were mostly found in the upper part of the marsh and in the deeper layers of the sediment. Two of the three DGGE bands related to the Nitrosomonas oligotropha lineage were more broadly distributed over the marsh, but were predominantly found in the upper layers of the sediment. Members of the environmental Nitrosomonas lineage 5 were predominantly detected in the deeper layers in the lower parts of the marsh. Potential driving factors for niche differentiation are discussed. [source] Factors controlling aggregation in a minimum and a conventionally tilled undulating fieldEUROPEAN JOURNAL OF SOIL SCIENCE, Issue 5 2007S. De Gryze Summary Wind and water erosion induce breakdown of soil aggregates and loss of soil organic matter. Whereas most of the relations between aggregation and its driving factors have been established on a plot scale, these relations might be very different within an undulating landscape where both erosion (by wind or water) and deposition occur. The aim of this study was to investigate to what degree spatial patterns in soil variables influence spatial patterns in aggregation under different tillage intensities. We studied an agricultural field of about 3 ha in the silty region of Belgium. The site was split into a conventional tillage (CT) and a minimum tillage (MT) system. Within the field, 396 geo-referenced surface soil samples (0,5 cm) were taken and analyzed for organic matter content, quantity of aggregates and a number of other soil properties. Under CT, 28.5% of the total sample variation was explained by the occurrence of depositional areas, 20.8% by the amount of soil organic matter, and 13.8% by the presence of a clay-rich B horizon which surfaced due to progressive water and tillage erosion. Regression analysis revealed that 27% of the variation in the quantity of macroaggregates (>0.25 mm) was accounted for by these three factors. Under MT, 27.1% of the total sample variation was related to the surface cover of Tertiary sand, 22.6% to the amount of soil organic matter, and 13% to erodibility. These three factors explained 53% of the variation in the quantity of macroaggregates. In the CT system, the correlation between grass- or maize- carbon and the quantity of macroaggregates was strongly linked to erodibility, while this was not the case in the MT system. We concluded that at this site, macroaggregation is dominated by landscape-scale processes (such as water or tillage erosion) rather than determined by the commonly considered local variables (such as small variations in texture or organic matter content). [source] Evaluation of six process-based forest growth models using eddy-covariance measurements of CO2 and H2O fluxes at six forest sites in EuropeGLOBAL CHANGE BIOLOGY, Issue 3 2002K. Kramer Abstract Reliable models are required to assess the impacts of climate change on forest ecosystems. Precise and independent data are essential to assess this accuracy. The flux measurements collected by the EUROFLUX project over a wide range of forest types and climatic regions in Europe allow a critical testing of the process-based models which were developed in the LTEEF project. The ECOCRAFT project complements this with a wealth of independent plant physiological measurements. Thus, it was aimed in this study to test six process-based forest growth models against the flux measurements of six European forest types, taking advantage of a large database with plant physiological parameters. The reliability of both the flux data and parameter values itself was not under discussion in this study. The data provided by the researchers of the EUROFLUX sites, possibly with local corrections, were used with a minor gap-filling procedure to avoid the loss of many days with observations. The model performance is discussed based on their accuracy, generality and realism. Accuracy was evaluated based on the goodness-of-fit with observed values of daily net ecosystem exchange, gross primary production and ecosystem respiration (gC m,2 d,1), and transpiration (kg H2O m,2 d,1). Moreover, accuracy was also evaluated based on systematic and unsystematic errors. Generality was characterized by the applicability of the models to different European forest ecosystems. Reality was evaluated by comparing the modelled and observed responses of gross primary production, ecosystem respiration to radiation and temperature. The results indicated that: Accuracy. All models showed similar high correlation with the measured carbon flux data, and also low systematic and unsystematic prediction errors at one or more sites of flux measurements. The results were similar in the case of several models when the water fluxes were considered. Most models fulfilled the criteria of sufficient accuracy for the ability to predict the carbon and water exchange between forests and the atmosphere. Generality. Three models of six could be applied for both deciduous and coniferous forests. Furthermore, four models were applied both for boreal and temperate conditions. However, no severe water-limited conditions were encountered, and no year-to-year variability could be tested. Realism. Most models fulfil the criterion of realism that the relationships between the modelled phenomena (carbon and water exchange) and environment are described causally. Again several of the models were able to reproduce the responses of measurable variables such as gross primary production (GPP), ecosystem respiration and transpiration to environmental driving factors such as radiation and temperature. Stomatal conductance appears to be the most critical process causing differences in predicted fluxes of carbon and water between those models that accurately describe the annual totals of GPP, ecosystem respiration and transpiration. As a conclusion, several process-based models are available that produce accurate estimates of carbon and water fluxes at several forest sites of Europe. This considerable accuracy fulfils one requirement of models to be able to predict the impacts of climate change on the carbon balance of European forests. However, the generality of the models should be further evaluated by expanding the range of testing over both time and space. In addition, differences in behaviour between models at the process level indicate requirement of further model testing, with special emphasis on modelling stomatal conductance realistically. [source] Determinants of software volatility: a field studyJOURNAL OF SOFTWARE MAINTENANCE AND EVOLUTION: RESEARCH AND PRACTICE, Issue 3 2003Xiaoni Zhang Abstract Although technology advances have provided new tools for maintaining software, maintenance costs remain the largest component of software life cycle cost. A basic factor claimed to be one of the driving factors in the cost of maintenance is software volatility. The objective of this research is to investigate the relationship between certain software attributes and software volatility. In this study, software volatility refers to the frequency or number of enhancements per unit of application over a specified time normalized. However, this metric is divided by the number of source lines of code (SLOC) to obtain a measure that takes into account the size of the software application. The research model is built on previous research concerning software volatility. Three factors are examined to determine their influence on software volatility normalized for SLOC: age, software complexity, and software complexity normalized for SLOC. In addition, we introduce the notion that mean time between software enhancements moderates the relationship of age, complexity, and complexity normalized for SLOC with software volatility. A field study at a major corporation allowed for the collection of data from a 13-year-time period. These data are used to empirically test the hypotheses presented in this study. As a moderator variable, mean time between enhancements significantly contributes to the explanatory power of a prediction model for software volatility adjusted for SLOC. Software administrators may wish to use the proposed model in their decision-making plans to control for software costs. Copyright © 2003 John Wiley & Sons, Ltd. [source] A Configuration Typology for Involving Purchasing Specialists in Product DevelopmentJOURNAL OF SUPPLY CHAIN MANAGEMENT, Issue 4 2001Nicolette Lakemond SUMMARY This article develops a configuration typology for purchasing's involvement in product development projects. Six configurations are identified and analyzed, varying in degree of coordination and level of purchaser integration. The configurations are illustrated by five case studies performed in different companies operating in different industries. Enabling factors, such as the purchasing organization and the competencies and skills of the purchasers, can facilitate the involvement of purchasers in a development project. Project size and project complexity can be identified as driving factors influencing the appropriateness of the purchaser involvement configurations. Dedicated, full-time purchasing specialists in combination with a purchasing coordinator provide the strongest degree of involvement necessary for managing large and complex projects, whereas indirect, ad hoc purchasinginvolvement provides the lowest degree of involvement sufficient for small and relatively simple projects. [source] Patterns of species richness and turnover along the pH gradient in deciduous forests: testing the continuum hypothesisJOURNAL OF VEGETATION SCIENCE, Issue 6 2009Cord Peppler-Lisbach Abstract Question: (i) How do species richness and species turnover change along a pH gradient? (ii) What are possible driving factors behind these patterns? (iii) Can the observed patterns be explained by an individualistic continuum concept that postulates independence of species responses and constant turnover rates? Location: Semi-natural, deciduous hardwood forests in NW Germany (558 plots). Methods: The instantaneous rate of compositional turnover is measured by the sum of slope angles of modelled response curves (119 understorey species) at any point along the pH gradient. Total turnover rate, positive turnover rate (species increasing in probability of occurrence) and negative turnover rate (species decreasing in probability of occurrence) are calculated separately. Species richness is modelled using Poisson regression and by calculating the sum of predicted probabilities at any gradient point. Turnover rates are compared with those calculated from a null model based on a Gaussian community model. Soil chemical analyses of 49 plots are used to interpret biodiversity patterns. Results: Species richness shows a hump-shaped relation to pH(CaCl2) with a minor decline at approximately pH>5.0. The decline is possibly due to the confounding influence of water regime and local species pool effects. Increasing richness from pH 2.5 to 4.7 can be traced back to positive turnover exceeding negative turnover. Peaks in turnover rates, dominated by positive turnover, are located at pH 3.7 and 2.8, where turnover rates considerably exceed rates derived from the null model. The turnover pattern can be related to soil chemical conditions, e.g. decreasing base saturation, Al and H+ toxicity and the occurrence of mor. Conclusions: The high turnover rates and the massive imbalance in positive and negative turnover rates found in deciduous forests cannot be explained by the individualistic continuum concept. Physiological constraints at the gradient limits and species pool effects could be responsible for this. Their role should be considered more explicitly in vegetation concepts dealing with the continuum-discontinuum controversy. The presented approach can be regarded as a comprehensive analytical tool for a better understanding of biodiversity patterns along environmental gradients by linking species richness, turnover and response curve types. [source] The dynamics of factors affecting the adoption of innovationsTHE JOURNAL OF PRODUCT INNOVATION MANAGEMENT, Issue 6 2002Eric Waarts An abundance of IT innovations are constantly struggling for market acceptance. Various models have been proposed in the literature in order to aid understanding of the principles behind the adoption of IT innovations, but most of them implicitly assume that the factors explaining adoption decisions do not change over time. This study challenges that assumption and adds to the existing literature by investigating the dynamics of the factors influencing adoption. Our general proposition is that the driving factors in adopting innovations will change as the diffusion of the innovation in the market progresses. A large-scale empirical study was carried out among medium-sized companies in a variety of European countries and industries concerning the adoption of enterprise resource planning (ERP) software. The findings strongly indicate that the factors affecting late adoption of ERP differ significantly from the factors explaining early adoption. At early stages of the diffusion process adoption tends to be especially driven by a combination of internal strategic drives and attitudes of the firm together with external forces like industry competition and supplier activities. Later on, the mix of adoption stimulating factors seems to be focusing more on implementation issues such as the scalability of the system, the number of seats and the yearly available budget. The study leads to both new methodological insights and substantive conclusions that also have practical implications. [source] A Market, Operation, and Mission Assessment of Large Rural For-Profit Hospitals With Positive Cash FlowTHE JOURNAL OF RURAL HEALTH, Issue 1 2007Michael J. McCue DBA ABSTRACT:,Context: National benchmark data for 2002 indicate that large rural for-profit hospitals have a median cash flow margin of 19.5% compared to 9.2% for their nonprofit counterparts. Purpose: This study aims to gain insight regarding the driving factors behind the high cash flow performance of large rural for-profit hospitals. Methods: Using 3 annual periods of Centers for Medicare and Medicaid cost report data with the last fiscal year ending between September 30, 2002, and August 30, 2003, the study found a cash flow margin of 21.5% for the large rural for-profit hospitals. All these facilities were owned by hospital management companies. To assess their underlying market, operational, and mission factors, these hospitals were compared to a similar comparison group of large rural nonprofit hospitals that are system owned and have positive cash flows. Findings: Using logistic regression analysis, the study found lower operating expense per adjusted discharge and salary expense as a percentage of total operating expense among large rural for-profit, system-owned hospitals with positive cash flows relative to nonprofits with similar traits. Conclusion: Overall, the findings of this study reflect how these for-profit hospitals, which are owned by hospital management companies, focus on controlling their labor costs as well as operating costs per discharge in order to achieve a greater positive cash flow position. [source] Quantifying successional changes in response to forest disturbancesAPPLIED VEGETATION SCIENCE, Issue 2 2008Trent D. Penman Question: Can dissimilarity measures of individual plots be used to forecast the driving factors among various anthropogenic disturbances influencing understorey successional changes? Location: Yambulla State Forest, south-eastern Australia (37°14'S, 149°38'E). Methods: Assessments of understorey vegetation communities were taken prior to anthropogenic disturbances and at three subsequent time periods representing a period of 15 years post-disturbance. Dissimilarities were calculated from the original assessment and modelled in a Bayesian framework to examine the influence of logging, number of prescribed burns and time. Results: All sites underwent significant changes over time independently of the imposed management regimes. Logging resulted in an immediate change in vegetation assemblage which decreased in the subsequent assessments. The number of prescribed fires brought greater change in the shrub vegetation assemblages, but less change in the ground species vegetation assemblages. Conclusions: The anthropogenic disturbances did have some role in the changes of vegetation assemblages but these were minimal. The ongoing changes appear to be a natural response to the last wildfire, which passed through the study area in 1973 (13 years prior to the study). Forest management practices should consider the influence of wildfire succession when planning for the conservation of biodiversity. [source] Corporate awakening , why (some) corporations embrace public,private partnershipsBUSINESS STRATEGY AND THE ENVIRONMENT, Issue 4 2005Julie LaFrance Abstract Predominantly since the 1992 Rio Summit, corporations have been increasingly pursuing partnerships with public institutions including governments, international organizations and NGOs that aim to contribute to sustainable development activities. Partnerships have become more common as corporations react to mounting pressure from corporate stakeholders, civil society and government on the responsible nature of their business practices. The corporate awakening towards a broader role of business in society and the trend of corporations embracing partnerships has led many to question the driving factors that motivate corporations to pursue partnerships. In this paper, the authors examine the underlying drivers of corporate organizational behaviour from the theoretical perspectives of both legitimacy and stakeholder needs, and discuss the challenges of gaining insight into why corporations embrace public,private partnerships. These theoretical perspectives are used to gain a deeper understanding of the corporate drivers that motivated TOTAL S.A. to approach UNESCO for cooperation on community development programmes in Myanmar. Copyright © 2005 John Wiley & Sons, Ltd and ERP Environment. [source] China's Current Real Estate Cycle and Potential Financial RisksCHINA AND WORLD ECONOMY, Issue 4 2006Xiaojing Zhang L1; E61; E51 Abstract The real estate cycle and financial stability are closely correlated. In light of global real estate bubbles, China's real estate cycle has attracted wide attention since 1998. The present paper analyzes three driving factors in the context of the current real estate cycle; namely, economic growth, macroeconomic environment and institutional establishment. Supported by econometric analysis using quarterly data from 1992,2004, the present paper indicates that real estate will develop steadily and that housing prices will consistently rise in the relative long run. Based on quantitative analysis, it is concluded that the implications of the current real estate cycle for financial stability include risks of real estate credit exposure, government guarantees and maturity mismatch. Some corresponding policy implications are discussed, such as advancing banking reform, encouraging the rational behavior of local governments and strengthening the regulation of foreign capital flows in and out of China's real estate industry. (Edited by Xinyu Fan) [source] | ||||||||||||||||||||||