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21.
Cécile Courdier John Boudjarane Valérie Malan Christine Muti Brian Sperelakis-Beedham Sylvie Odent Sylvie Jaillard Chloé Quelin Cédric Le Caignec Olivier Patat Charlotte Dubucs Sophie Julia Caroline Schluth-Bolard Carole Goumy Sylvia Redon Jean-Baptiste Gaillard Minh Tuan Huynh Céline Dupont Anne-Claude Tabet Guillaume Cogan François Vialard Rodolphe Dard Guillaume Jedraszak Florence Jobic Mathilde Lefebvre Geneviève Quenum Saori Inai Mélanie Rama Fanny Sauvestre Frédéric Coatleven Julie Thomas Caroline Rooryck 《黑龙江环境通报》2023,43(6):734-745
22.
Sylvia Wanner Lang Patricia F. Waller Jean Thatcher Shope 《Journal of Safety Research》1996,27(4):241-257
The high motor-vehicle crash rate of young drivers may be attributed to both driving inexperience and a greater tendency to engage in risk-taking behavior. This study examines risk-taking behavior, as indicated by single-vehicle crashes and injury crashes, and factors associated with these behaviors, based on measures of demographic, psychosocial, and substance use obtained from high school senior questionnaires. Because previous work indicated different predictors for young men and young women, separate logistic regression analyses were conducted. For young women, propensity toward cigarette use was associated with higher rates of single-vehicle crashes; while race, alcohol misuse, and friends' involvement with alcohol and marijuana were associated with injury crashes. For young men, availability of substances, driving frequency, alcohol misuse, and propensity toward marijuana use were associated with higher rates of single-vehicle crashes. Young men's living situation, availability of substances, and marijuana use were related to injury crashes. 相似文献
23.
Van Leeuwen S 《Environmental management》2004,33(2):163-172
24.
25.
Sylvia Früiiwirth-Schnatter 《Environmental and Ecological Statistics》1996,3(4):291-309
Model diagnostics for normal and non-normal state space models are based on recursive residuals which are defined from the one-step ahead predictive distribution. Routine calculation of these residuals is discussed in detail. Various diagnostic tools are suggested to check, for example, for wrong observation distributions and for autocorrelation. The paper also discusses such topics as model diagnostics for discrete time series and model discrimination via Bayes factors. The case studies cover environmental applications such as analysing a time series of the number of daily rainfall occurrences and a time series of daily sulfur dioxide emissions. 相似文献
26.
Pablo P. Leal Catriona L. Hurd Sylvia G. Sander Evelyn Armstrong Michael Y. Roleda 《Chemistry and Ecology》2016,32(8):786-800
The production of accurate and reliable data on copper ecotoxicology of marine algae depends on the use of trace metal clean techniques during experimentation. We reviewed the methodologies used in the literature on copper ecotoxicology of marine macro- and microalgae, specifically the use of trace metal clean procedures such as the labware used (glassware vs. plasticware), methods of cleaning the labware (acid soaking and ultrapure water rinsing), stock solution preparation (copper source and acidification), and measurement and reporting of dissolved copper concentrations. In terms of taxonomic classification, the most studied algal groups were the Phyla Ochrophyta, Bacillariophyta, Rhodophyta, and Chlorophyta. In terms of methodology, ~50% of the articles did not specify the labware, ~25% used glassware, and ~25% plasticware; ~30% of the studies specified cleaning protocols for labware to remove trace metal impurities; the copper form used to prepare the stock solutions was specified in ~80% of studies but acidification to stabilise the dissolved copper was performed in only ~20%; and the dissolved copper concentration was measured in only ~40% of studies. We discuss the importance of following trace metal clean techniques for the comparison and interpretation of data obtained on copper ecotoxicology in algae. 相似文献
27.
Simon McCarthy Sylvia Tunstall Dennis Parker Hazel Faulkner Joe Howe 《Environmental Hazards》2013,12(3):179-192
Risk communication in flood incident management can be improved through developing hydrometeorological and engineering models used as tools for communicating risk between scientists and emergency management professionals. A range of such models and tools was evaluated by participating flood emergency managers during a 4-day, real-time simulation of an extreme event in the Thamesmead area in the Thames estuary close to London, England. Emergency managers have different communication needs and value new tools differently, but the indications are that a range of new tools could be beneficial in flood incident management. Provided they are communicated large model uncertainties are not necessarily unwelcome among flood emergency managers. Even so they are cautious about sharing the ownership of weather and flood modelling uncertainties. 相似文献
28.
Both the effects of earthworms on soils and the effects of soil conditions on earthworms have been studied with the help of experiments and modelling. This paper provides a model architecture allowing coupling both effects to a dynamic interaction in changing environmental conditions. We chose for a spatio-temporally explicit model and focussed on wetland conditions. Soil temperature and humidity have been modelled by means of finite volumes and were used to determine the spatial habitat suitability. The life cycles of earthworms have been modelled by Leslie matrices where soil humidity, soil temperature and population densities have been used to parametrize survival and transition probabilities. Earthworm dispersion has been described by a cellular automaton of the domain providing spatial population densities for both the life cycle submodel and the soil conditions submodel. 相似文献
29.
Chaochung Tsai Sylvia Yang Alan C. Trimble Jennifer L. Ruesink 《Marine Biology》2010,157(9):1929-1936
Dwarf eelgrass (duckgrass; Zostera japonica) and Manila clams (Ruditapes philippinarum) are two introduced species that co-occur on intertidal flats of the northeast Pacific. Through factorial manipulation of
clam (0, 62.5, 125 clams m−2) and eelgrass density (present, removed by hand, harrowed), we examined intra- and interspecific effects on performance,
as well as modification of the physical environment. The presence of eelgrass reduced water flow by up to 40% and was also
observed to retain water at low tide, which may ameliorate desiccation and explain why eelgrass grew faster in the presence
of conspecifics (positive feedback). Although shell growth of small (20–50 mm) clams was not consistently affected by either
treatment in this 2-month experiment, clam condition improved when eelgrass was removed. Reciprocally, clams at aquaculture
densities had no effect on eelgrass growth, clam growth and condition, or porewater nutrients. Overall, only Z. japonica demonstrated strong population-level interactions. Interspecific results support an emerging paradigm that invasive marine
ecosystem engineers often negatively affect infauna. Positive feedbacks for Z. japonica may characterize its intraspecific effects particularly at the stressful intertidal elevation of this study (+1 m above mean
lower low water). 相似文献
30.
Sylvia M. Tunstall Susan M. Tapsell Sally Eden 《Journal of Environmental Planning and Management》1999,42(4):527-545
This paper considers the stability of public responses to an urban river restoration scheme on the River Skerne, Darlington, UK, by comparing the results from surveys of local residents carried out before and after scheme implementation. This case study provides evidence of strong and generally consistent positive responses to the proposals and implemented scheme to return the straightened and channelized river to a more natural condition although support was more qualified after than before implementation. Although the scheme design and construction costs were high, nearly two-thirds regarded the scheme as value for money. Exploratory contingent valuation results on whether or not local residents were prepared to pay for the scheme were broadly stable over the two surveys. 相似文献