1,689 research outputs found
How effective are the things people say to apologize? Effects of the realization of the apology speech act.
The Cross-Cultural Speech Act Realization Project (Blum-Kulka, House, & Kasper, 1989a) has identified five components of an apology speech act set : five strategies that speakers use to apologize. This study examines the effects of four of those strategies (illocutionary force indicating device, expression of responsibility, promise of forebearance, and offer of repair) on the judgments made by hearers about the speaker and about the apology. Each of the strategies is shown to have an independent effect in improving reactions to the speaker. Further, the magnitude of these effects appear to be roughly similar for each of the strategies. The things people say to apologize do seem to be effective in accomplishing the self-presentational goals of apologizers
How effective are the things people say to apologize? Effects of the realization of the apology speech act.
The Cross-Cultural Speech Act Realization Project (Blum-Kulka, House, & Kasper, 1989a) has identified five components of an apology speech act set : five strategies that speakers use to apologize. This study examines the effects of four of those strategies (illocutionary force indicating device, expression of responsibility, promise of forebearance, and offer of repair) on the judgments made by hearers about the speaker and about the apology. Each of the strategies is shown to have an independent effect in improving reactions to the speaker. Further, the magnitude of these effects appear to be roughly similar for each of the strategies. The things people say to apologize do seem to be effective in accomplishing the self-presentational goals of apologizers
Essais d'épuration des eaux usées de Marrakech par la jacinthe d'eau (Charges organique, bactérienne et parasitologique)
Cette Ă©tude est destinĂ©e Ă tester expĂ©rimentalement les capacitĂ©s d'Ă©puration des eaux usĂ©es par lagunage Ă macrophytes (jacinthe d'eau : Eichhornia crassipes), sous les conditions climatiques de Marrakech.L'installation fonctionne en continu avec un dĂ©bit constant Ă l'entrĂ©e de 10 l/min. La charge admise est de 40 g DCO/M2/j.Sous l'aspect de la production de biomasse vĂ©gĂ©tale, les effluents domestiques constituent un bon substrat nutritionnel. Les taux de croissance et les productions obtenues montrent dans l'ensemble une excellent adaptation d'Eichhornia crassipesĂ ce milieu. Le maximum de biomasse et de productivitĂ© ont Ă©tĂ© obtenu en pĂ©riode estivale et sont respectivement de: 40 kg MF/m2 et 38,6 MS/m2/j. Il s'est avĂ©rĂ© Ă©galement que la jacinthe d'eau est persistante toute l'annĂ©e sous le climat mĂ©diterranĂ©en aride de Marrakech.L'Ă©puration des eaux usĂ©es domestiques par lagunage Ă macrophyles aboutit Ă des rendements satisfaisants surtout en pĂ©riode estivale oĂč on obtient un abattement de 87 % de la DCO et une rĂ©duction de 95 % des MEST.Sur te plan sanitaire, l'abattement de la charge bactĂ©rienne exprimĂ©e par les bactĂ©ries tĂ©moins de contamination fĂ©cale peut atteindre jusqu'Ă 2ULog pour un temps de sĂ©jour thĂ©orique trĂšs court (7 jours).Ce systĂšme e par ailleurs fourni des abattement de 100 % des oeufs d'helminthes parasites au niveau de l'eau Ă©purĂ©e.The aim of the present study is to experimentaly test the capacities of the mater hyacinth (Eichhornia crassipes) in order to purify wastewater under Manakesh climatic conditions.The experiment was carried al wastewater spreading zone of Marrakesh pretraitement.The experimant's installation is made of two lined water yacinth ponds that receive domestic wastewater.The proposed process is a continuous system with a constant flow rate of 10 l/mn. The theoritical retention time was estimated to 7 days. The allowed load is 40 g COD/m2/day. Macrophytic biomass was observed for both ponds during the experimental period (Match, 1986 - February, 1987). Parameters of organic, bacterial and parasitological loads are studied in order to determine the system efficiency under arid climate.Obtained results show the water hyacinth ability to adapt to Marrakesh climatic conditions. The number of plants doubled at 12 days, this is coherent with results obtained by PENFOUND (1956), BOCK (1969), WESTLAKE (1963, 1975) and SCULTHORPE (1967). Maximum biomass level and productivity were achieved during the summer period : 40 kg WW/m2/day and 38,6 g DW/m2/day respectively. Biomass and productivity obtained under arid climate are similar to results obtained by WOOTEN and DODD (1976), and by DINGES (1976) under subtropical conditions, and higher than chose obtained by JOHN (1985) under temperate climate. The growth period of water hyacinth is estimated to 9 months at Marrakesh, 10 months at subtropical climate (WOLVERTON and MC DONALD, 1976) and limited to 6 months under cold climate (COPELLI et al., 1982; DUBOIS, 1983; SAUZE, 1983; DE CASABIANCA, 1985). Temperature is considered as a limited growth factor of water yacinth. According to FRANCOIS et al. (1977), the water hyacinth growth was stopped when the temperature is lower than 10 °C. Linder Marrakesh arid climate, the temperature is always higher than 10 °C. It was also found that the water hyacinth survive all a year around in the arid climate of Marrakesh.Domestic sewage purification by water hyacinth leads to satisfactory efficiency during the summer concerning reduction of COD: 87 % and TSS : 95 %. This phenomenon may be jointed to the retention time wich was lengthed (9,4 days) in the summer, and the higher biomass density of water hyacinths in this one. The purifying action of floating macrophytes (Eichharnia crassipes) is physical and biological. The root system stabilizes the medium thus favoring sedimentation of TSS and particulate COD both on the bottom of the tank and by trapping in the root hairs. Elimination of COD is realized by means of the action of bacteria which are present, by sedimentation of particulate COD and root filtration.The biological action of the plants is not an important mechanism for COD elimination. The system efficiency is low at the winter and the reduction of COD and TSS have not exceed 60 % and 82 % respectively because the degenering of the water hyacinths.From sanitary point of view, bacterial load reduction expressed by control faecal contamination bacteria achieved 2 log Units for a short theoritical retention time (7 days). This is higher than the result obtained by DUBOIS (1985). Two hypothesis are given to explain reduction of bacterial load by water hyacinths :1) the bacteria are sedimented or trapped in the root hairs of the water hyacinths whith TSS. 2) Water hyacinths may have a capacity to secrete a chemical substance wich could have bactericid or bacteriostatic effect. The improvement of retention time and the addition of one or two supplementary ponds will probably lead to better results. Moreover, this process had also reduced parasitical helminth eggs to undetectable levels (100 %). The parasitical helminth eggs distinguisched at domestic sewage received by the experimental installation, are Taenia, Hymenolepis, Trichuris and Ascaris geints. Their total number vary tram 0 to 120 eggs/l with a mean of 32. Other types of eggs could be encountred generally in waste water as : Toxocara, Oxyure, Capillaria and Taxoascaris (FOX and FITZGERALD,1976) but was not detected by our technique. No helminth eggs were found in purified wastewater descended through water hyacinth ponds. This phenomenon is explained by supposing that the helminth eggs are present in the effluent but it was the detection limit of the employed technique (Bailenger method), or there is no eggs really at the effluent because of their higher specific weight. Ascaris, Taenia and Trichuris eggs have a sedimentation rate of 0,65 m/h, 0,26 m/h and 1,5 m/h respectively (FEACHEM et al.,1983). The eggs sedimented rapidly in the water hyacinths ponds involving a transfer of the effluent pollution to the sediment. Several authors affirmed that the stabilization ponds are an effective means to reduce parasitical helminth eggs of the wastewaters (GLOYNA, 1972; KOWAL, 1985). Hence, if the parasitical risk could be controled in the purified water (effluent), particular attention should be given to sediments. It is also important to point out, that no parasitical nematode is found at the influent. Nematofauna associated to wastewater and roots of water hyacinth, was represented by bacteria consumer nematode. The abundance of nematode is definite by the existence of bacterial food in the wastewaters (CALAWAY, 1963; SHIEMER, 1976). The principal genus determined are Rhabditis sp, Plectus sp. and MononchoĂŻdes sp. It appears that Rhabditis genus, is dominant in the first pond (94,7 %) of the nematode population. However, the two genus Rhabditis sp. and Plectus sp. are dominant in the second one and represent 50 % and 49 % respectively. The presence of Plectidae in the second basin indicates that is less loaded (ZULINI, 1976). However, under the arid climate conditions of Marrakesh, the process based on water hyacinth for wastewater purification, is faced with two major problems : first, the water loss by evapotranspiration reachs 60 % during the summer time under arid climate of Marrakesh. The development of Mousquito particularly in the summer, constitutes the second problem of our proposed process. Moreover, front economical point of view, the water hyacinths show a good productivity in the summer under arid climate and could be exploited in several field
A 'no' with a trace of 'yes':a mouse-tracking study of negative sentence processing
There is strong evidence that comprehenders can parse sentences in an incremental fashion. However, when the sentence contains a negation, the evidence is less clear. Previous work has shown that increasing the pragmatic felicity of a negative sentence reduces or eliminates any processing overhead relative to affirmative sentences. However, in previous work felicity has gone hand-in-hand with the predictability of critical material in a sentence. In three experiments reported here, we presented equally felicitous sentences with critical material of varying predictability (operationalised as the number of possible completions) to test whether this might be a critical factor determining the ease with which partial sentences containing a negation are interpreted. Participants completed a truth-value judgement task (Experiment 1) or a sentence completion task (Experiments 2 and 3) after viewing a visual environment that provided the context for a test sentence, which could differ in truth value (in Experiment 1 only), polarity (affirmative or negative), and number of possible completions (one, two, or three). In all three experiments, we recorded response times and accuracy, but also response dynamics via participantsâ computer mouse trajectories, allowing us to test specific hypotheses about the time course of comprehension. Across all experiments, in conditions with one or two possible targets, we observed consistent detrimental effects of negative polarity, suggesting that the difficulty in processing negation cannot be reduced to effects relating to predictability or pragmatic felicity. We discuss this finding in relation to incremental and two-stage models of processing and outline a new account of the processing difficulty arising from negation in terms of a conflict between what is locally activated on the basis of individual words and phrases and the global meaning of a negative sentence
Crew egress procedures for Apollo block 1 command module at sea
Crew egress procedures for Apollo block 1 command module at se
Inflatable Aerocapture Decelerators for Mars Orbiters
A multi-disciplinary research program was recently completed, sponsored by NASA Marshall Space Flight Center, on the subject of aerocapture of spacecraft weighing up to 5 metric tons at Mars. Heavier spacecraft will require deployable drag area beyond the dimensional limits of current and planned launch fairings. This research focuses on the approach of lightweight inflatable decelerators constructed with thin films, using fiber reinforcement and having a temperature limitation of 500 C. Trajectory analysis defines trajectories for a range of low ballistic coefficients for which convective heat flux is compatible with the material set. Fluid-Structure Interaction (FSI) tools are expanded to include the rarified flow regime. Several non-symmetrical configurations are evaluated for their capability to develop lift as part of the necessary trajectory control strategy. Manufacturing technology is developed for 3-D stretch forming of polyimide films and for tailored fiber reinforcement of thin films. Finally, the mass of the decelerator is estimated and compared to the mass of a traditional rigid aeroshell
Collections to think with: collecting, scholarship and belonging in the R. E. Hart Collection (Blackburn Museum and Art Gallery)
Blackburn Museum and Art Gallery has a nationally significant coin collection, thanks mainly to two bequests in the early twentieth century. The donation by R. E. Hart, a local industrialist, was made along with all his accompanying notes and books. This collection offers unique insights into the habits and aims of Hart as a numismatist, his wider network and the intellectual community of collecting. Understanding Hartâs processes of acquisition, and his role as a learned society member and customer of major auction houses supplies the outlines of a shared endeavour that, in the early twentieth century, shaped social and personal, as well as economic and cultural identities. Collections and collecting like Hartâs were also fundamental in creating the resources and structures for numismatic study today, offering a reminder of the importance of preserving and understanding inclusive environments of knowledge curation, as well as context for the collections underpinning much current research
Cross-linguistic study of vocal pathology: perceptual features of spasmodic dysphonia in French-speaking subjects
Clinical characterisation of Spasmodic Dysphonia of the adductor type (SD) in French speakers by Klap and colleagues (1993) appears to differ from that of SD in English. This perceptual analysis aims to describe the phonetic features of French SD. A video of 6 French speakers with SD supplied by Klap and colleagues was analysed for frequency of phonatory breaks, pitch breaks, harshness, creak, breathiness and falsetto voice, rate of production, and quantity of speech output. In contrast to English SD, the French speaking SD patients demonstrated no evidence pitch breaks, but phonatory breaks, harshness and breathiness were prominent features. This verifies the French authorsâ (1993) clinical description. These findings suggest that phonetic properties of a specific language may affect the manifestation of pathology in neurogenic voice disorders
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