920 resultados para incident angle


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On-street parking has been considered problematic by engineers for many years. In fact, numerous studies have concluded that diagonal or angle parking in particular is potentially more of a safety concern than parallel or no parking at all. It is a common position of many states, including Iowa, to discourage or completely prohibit angle parking on primary road extensions in urban areas. However, with the acceptance of “context sensitive design” and traffic calming techniques, policies for on-street parking are receiving re -consideration in many agencies including the FHWA. This study was undertaken to analyze operational and safety histories in the state of Iowa where various types of on-street parking have existed for many years, concentrating in particular on smaller communities. Specifically of interest was a comparison of diagonal parking locations to other types with regard to related crash histories. If possible, it was intended to develop guidelines to assist Iowa Department of Transportation designers in the consideration of parking requirements for road improvements through small communities. In this regard, several criteria were analyzed to determine possible contribution to crash history including road width, clearance to parked vehicles, traffic volumes, community population, and length of parking area. None of these factors, with the possible exception of population, displayed a clearly definable relationship to crash history. However, when average crash rates for various parking types were compared for non-intersection crashes, differences in rates between areas with diagonal parking and those with parallel parking were almost negligible. In fact, those observed rates were less than sample locations with no parking at all. These results seem to indicate that indeed there may exist no compelling justification for blanket prohibition of angle parking along Iowa’s primary extensions in all urban areas. Rather, a case-by-case investigation with each project design of the most applicable parking type would seem appropriate in smaller communities.

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INTRODUCTION : L'affection, et son contraire l'aversion, se manifestent à chaque instant de l'existence. Que ce soit au travers de notre relation avec les membres de notre entourage, les perceptions sonores, visuelles, olfactives qui nous saisissent à tout instant, il est constamment demandé à notre personnalité d'apprécier, de choisir, de rejeter en fonction de nos penchants, sans que ce choix soit nécessairement explicable ou justifiable par des arguments que chacun pourrait comprendre. L'affection, en tant qu'émanation de la personnalité, est-elle juridiquement protégée ? La question semble saugrenue mais il suffit de penser à la protection de la relation avec ses proches que la jurisprudence a bâtie sur la base de l'article 28 CC pour se rendre compte que l'affection est à l'évidence protégée en tant que composante de la personnalité. Mais où s'arrête-t-elle ? S'il est acquis qu'elle protège une relation entre deux êtres, peut-elle porter sur un objet ayant appartenu à un proche, par exemple une montre héritée d'un parent décédé ? Une réaction instinctive nous incite à répondre par l'affirmative; nous entendons cependant démontrer que cette protection trouve aussi des fondements juridiques, et qu'elle a des conséquences légales; ainsi en va-t-il si la montre est endommagée par un tiers : doit-on alors se limiter au remboursement de la valeur vénale, en compensant uniquement le dommage matériel, ou le titulaire du droit à l'affection peut-il réclamer, en sus de la valeur vénale, le dédommagement du tort moral ? Et si la montre est en main d'un tiers, comment aménager le rapport de deux personnes légitimées à invoquer un lien sur un objet, l'une en vertu de son droit de propriété, l'autre en vertu de son sentiment affectif ? La protection ne s'arrête certainement pas aux objets qui rappellent le souvenir d'un être proche. D'autres objets, tels un arbre planté à sa naissance, un objet qui matérialise un événement personnel important, sont aussi susceptibles d'être l'objet d'un lien affectif. Bien qu'ils n'aient pas, en raison de l'absence de lien préalable avec un être physique, de substrat duquel tirer la justification juridique de la protection, nous démontrerons que ce lien affectif est également protégé. Et, enfin, peut-on, à notre époque, parler d'affection sans évoquer les animaux ? Quelles sont les règles applicables au statut de l'animal depuis que le législateur a décidé qu'il n'est plus une chose ? Voilà une troisième catégorie de valeurs d'affection qui nous occupera et dont nous étudierons le régime particulier de protection depuis la récente modification du Code civil suisse. L'étude de la protection des valeurs d'affection a ceci de particulier qu'elle était au début du siècle souvent citée dans le catalogue des droits de la personnalité, notamment lorsque les auteurs commentaient ce nouvel article 28 CC que l'on disait si novateur. Cet ouvrage entend déterminer ce qu'il reste aujourd'hui de cette doctrine si prompte à voir dans l'article 28 CC ce qu'il n'est peut-être plus vraiment actuellement, c'est-à-dire un puissant vecteur du développement des conceptions juridiques et de l'évolution de la protection de la personnalité. L'on entend souvent que la tendance sociale est à l'individualisme, à la précarisation des rapports humains et à l'anonymisation de la société. Le renouveau du débat sur la protection des valeurs d'affection, notamment par la modification législative touchant le statut de l'animal, est la manifestation du besoin social de protéger les liens affectifs portant sur un objet, que ce soit une alliance, un arbre planté à sa naissance, ou un animal de compagnie. Après l'analyse des sources de la protection des valeurs d'affection, nous examinerons quelles peuvent être les conséquences légales de cette protection s'agissant de la réparation du tort moral, et au niveau de la résolution de conflits de droit qui peuvent surgir entre le titulaire du droit à la valeur d'affection et le tiers propriétaire. Il s'agira également de déterminer si la récente modification législative sur le statut de l'animal apporte des solutions nouvelles à ces questions.

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BACKGROUND: The race- and sex-specific epidemiology of incident heart failure (HF) among a contemporary elderly cohort are not well described. METHODS: We studied 2934 participants without HF enrolled in the Health, Aging, and Body Composition Study (mean [SD] age, 73.6 [2.9] years; 47.9% men; 58.6% white; and 41.4% black) and assessed the incidence of HF, population-attributable risk (PAR) of independent risk factors for HF, and outcomes of incident HF. RESULTS: During a median follow-up of 7.1 years, 258 participants (8.8%) developed HF (13.6 cases per 1000 person-years; 95% confidence interval, 12.1-15.4). Men and black participants were more likely to develop HF. No significant sex-based differences were observed in risk factors. Coronary heart disease (PAR, 23.9% for white participants and 29.5% for black participants) and uncontrolled blood pressure (PAR, 21.3% for white participants and 30.1% for black participants) carried the highest PAR in both races. Among black participants, 6 of 8 risk factors assessed (smoking, increased heart rate, coronary heart disease, left ventricular hypertrophy, uncontrolled blood pressure, and reduced glomerular filtration rate) had more than 5% higher PAR compared with that among white participants, leading to a higher overall proportion of HF attributable to modifiable risk factors in black participants vs white participants (67.8% vs 48.9%). Participants who developed HF had higher annual mortality (18.0% vs 2.7%). No racial difference in survival after HF was noted; however, rehospitalization rates were higher among black participants (62.1 vs 30.3 hospitalizations per 100 person-years, P < .001). CONCLUSIONS: Incident HF is common in older persons; a large proportion of HF risk is attributed to modifiable risk factors. Racial differences in risk factors for HF and in hospitalization rates after HF need to be considered in prevention and treatment efforts.

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BACKGROUND: Tests for recent infections (TRIs) are important for HIV surveillance. We have shown that a patient's antibody pattern in a confirmatory line immunoassay (Inno-Lia) also yields information on time since infection. We have published algorithms which, with a certain sensitivity and specificity, distinguish between incident (< = 12 months) and older infection. In order to use these algorithms like other TRIs, i.e., based on their windows, we now determined their window periods. METHODS: We classified Inno-Lia results of 527 treatment-naïve patients with HIV-1 infection < = 12 months according to incidence by 25 algorithms. The time after which all infections were ruled older, i.e. the algorithm's window, was determined by linear regression of the proportion ruled incident in dependence of time since infection. Window-based incident infection rates (IIR) were determined utilizing the relationship 'Prevalence = Incidence x Duration' in four annual cohorts of HIV-1 notifications. Results were compared to performance-based IIR also derived from Inno-Lia results, but utilizing the relationship 'incident = true incident + false incident' and also to the IIR derived from the BED incidence assay. RESULTS: Window periods varied between 45.8 and 130.1 days and correlated well with the algorithms' diagnostic sensitivity (R(2) = 0.962; P<0.0001). Among the 25 algorithms, the mean window-based IIR among the 748 notifications of 2005/06 was 0.457 compared to 0.453 obtained for performance-based IIR with a model not correcting for selection bias. Evaluation of BED results using a window of 153 days yielded an IIR of 0.669. Window-based IIR and performance-based IIR increased by 22.4% and respectively 30.6% in 2008, while 2009 and 2010 showed a return to baseline for both methods. CONCLUSIONS: IIR estimations by window- and performance-based evaluations of Inno-Lia algorithm results were similar and can be used together to assess IIR changes between annual HIV notification cohorts.

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OBJECTIVES: To preliminarily evaluate prospectively the accuracy and reliability of a specific ad hoc reduction-compression forceps in intraoral open reduction of transverse and displaced mandibular angle fractures. STUDY DESIGN: We analyzed the clinical and radiologic data of 7 patients with 7 single transverse and displaced angle fractures. An intraoral approach was performed in all of the patients without using perioperative intermaxillary fixation. A single Arbeitsgemeinschaft Osteosynthese (AO) unilock reconstruction plate was fixed to each stable fragment with 3 locking screws (2.0 mm in 5 patients and 2.4 mm in 2 patients) at the basilar border of the mandible, according to AO/American Society of Internal Fixation (ASIF) principles. Follow-up was at 1, 3, 6, and 12 months, and we noted the status of healing and complications, if any. RESULTS: All of the patients had satisfactory fracture reduction as well as a successful treatment outcome without complications. CONCLUSION: This preliminary study demonstrated that the intraoral reduction of transverse and displaced angle fractures using a specific ad hoc reduction-forceps results in a high rate of success.

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We present strategies for chemical shift assignments of large proteins by magic-angle spinning solid-state NMR, using the 21-kDa disulfide-bond-forming enzyme DsbA as prototype. Previous studies have demonstrated that complete de novo assignments are possible for proteins up to approximately 17 kDa, and partial assignments have been performed for several larger proteins. Here we show that combinations of isotopic labeling strategies, high field correlation spectroscopy, and three-dimensional (3D) and four-dimensional (4D) backbone correlation experiments yield highly confident assignments for more than 90% of backbone resonances in DsbA. Samples were prepared as nanocrystalline precipitates by a dialysis procedure, resulting in heterogeneous linewidths below 0.2 ppm. Thus, high magnetic fields, selective decoupling pulse sequences, and sparse isotopic labeling all improved spectral resolution. Assignments by amino acid type were facilitated by particular combinations of pulse sequences and isotopic labeling; for example, transferred echo double resonance experiments enhanced sensitivity for Pro and Gly residues; [2-(13)C]glycerol labeling clarified Val, Ile, and Leu assignments; in-phase anti-phase correlation spectra enabled interpretation of otherwise crowded Glx/Asx side-chain regions; and 3D NCACX experiments on [2-(13)C]glycerol samples provided unique sets of aromatic (Phe, Tyr, and Trp) correlations. Together with high-sensitivity CANCOCA 4D experiments and CANCOCX 3D experiments, unambiguous backbone walks could be performed throughout the majority of the sequence. At 189 residues, DsbA represents the largest monomeric unit for which essentially complete solid-state NMR assignments have so far been achieved. These results will facilitate studies of nanocrystalline DsbA structure and dynamics and will enable analysis of its 41-kDa covalent complex with the membrane protein DsbB, for which we demonstrate a high-resolution two-dimensional (13)C-(13)C spectrum.

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OBJECTIVES: The purpose of this study was to evaluate the association between inflammation and heart failure (HF) risk in older adults. BACKGROUND: Inflammation is associated with HF risk factors and also directly affects myocardial function. METHODS: The association of baseline serum concentrations of interleukin (IL)-6, tumor necrosis factor-alpha, and C-reactive protein (CRP) with incident HF was assessed with Cox models among 2,610 older persons without prevalent HF enrolled in the Health ABC (Health, Aging, and Body Composition) study (age 73.6 +/- 2.9 years; 48.3% men; 59.6% white). RESULTS: During follow-up (median 9.4 years), HF developed in 311 (11.9%) participants. In models controlling for clinical characteristics, ankle-arm index, and incident coronary heart disease, doubling of IL-6, tumor necrosis factor-alpha, and CRP concentrations was associated with 29% (95% confidence interval: 13% to 47%; p < 0.001), 46% (95% confidence interval: 17% to 84%; p = 0.001), and 9% (95% confidence interval: -1% to 24%; p = 0.087) increase in HF risk, respectively. In models including all 3 markers, IL-6, and tumor necrosis factor-alpha, but not CRP, remained significant. These associations were similar across sex and race and persisted in models accounting for death as a competing event. Post-HF ejection fraction was available in 239 (76.8%) cases; inflammatory markers had stronger association with HF with preserved ejection fraction. Repeat IL-6 and CRP determinations at 1-year follow-up did not provide incremental information. Addition of IL-6 to the clinical Health ABC HF model improved model discrimination (C index from 0.717 to 0.734; p = 0.001) and fit (decreased Bayes information criterion by 17.8; p < 0.001). CONCLUSIONS: Inflammatory markers are associated with HF risk among older adults and may improve HF risk stratification.

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Until recently, the hard X-ray, phase-sensitive imaging technique called grating interferometry was thought to provide information only in real space. However, by utilizing an alternative approach to data analysis we demonstrated that the angular resolved ultra-small angle X-ray scattering distribution can be retrieved from experimental data. Thus, reciprocal space information is accessible by grating interferometry in addition to real space. Naturally, the quality of the retrieved data strongly depends on the performance of the employed analysis procedure, which involves deconvolution of periodic and noisy data in this context. The aim of this article is to compare several deconvolution algorithms to retrieve the ultra-small angle X-ray scattering distribution in grating interferometry. We quantitatively compare the performance of three deconvolution procedures (i.e., Wiener, iterative Wiener and Lucy-Richardson) in case of realistically modeled, noisy and periodic input data. The simulations showed that the algorithm of Lucy-Richardson is the more reliable and more efficient as a function of the characteristics of the signals in the given context. The availability of a reliable data analysis procedure is essential for future developments in grating interferometry.

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We have performed a detailed study of the zenith angle dependence of the regeneration factor and distributions of events at SNO and SK for different solutions of the solar neutrino problem. In particular, we discuss the oscillatory behavior and the synchronization effect in the distribution for the LMA solution, the parametric peak for the LOW solution, etc. A physical interpretation of the effects is given. We suggest a new binning of events which emphasizes the distinctive features of the zenith angle distributions for the different solutions. We also find the correlations between the integrated day-night asymmetry and the rates of events in different zenith angle bins. The study of these correlations strengthens the identification power of the analysis.