6 research outputs found

    Defining, Screening, and Validating Crash Surrogate Events Using Naturalistic Driving Data

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    ABSTRACT Naturalistic driving studies provide an excellent opportunity to better understand crash causality and to supplement crash observations with a much larger number of near crash events. The goal of this research is the development of a rigorous set of diagnostic procedures to identify and validate useful crash and near crash events that can be used in enhanced safety analyses. As such, the research seeks to apply statistical methods as part of the methodology. A way to better understand crash occurrence and identify potential countermeasures to improve safety is to learn from and use near-crash events, particularly those near-crashes that have a common etiology to crash outcomes. This paper demonstrates that a multi-stage modeling framework can make the analysis of naturalistic driving data tractable. The procedure is tested using data from the VTTI 100-car study for road departure events. A total of 51 non-intersections and 12 intersectionrelated events are included in an application of the framework. While the sample sizes are limited in this empirical study, the authors believe the procedure is ready for testing in other applications

    FEDSM2002-31374 RESEARCH ON A FULL THREE-DIMENSIONAL INVERSE METHOD FOR THE MIXED-FLOW PUMP RUNNER

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    ABSTRACT In this paper, a full three-dimensional inverse method for the design of mixed-flow pump runner is described. The threedimensional flow in the runner is decomposed into a tangential mean flow and a tangential periodic flow. The blades are represented by superposition of vortices and sources on the blade mean surface, and the blade mean surface is determined by the inverse method. In this method, the distribution of the circumferentially mean swirl VR θ on the meridional geometry of the runner is prescribed and the corresponding blade shape is computed iteratively. The new method is applied to the design of a mixed-flow pump runner and the result is satisfactory

    Considering SB environmental assessment tool for the performance of buildings in Taiwan

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    ABSTRACT The International Organization for Standardization officially issued ISO 21930 and ISO 15686 standards in 2006, for quantitatively measuring the influence of buildings on environmental performance. SBTOOL is an international assessment tool promoted by the iiSBE, which can be employed to reflect the influence of the different phases of the life cycle of a building on climate, society and economy. Taiwan has been actively implementing the Sustainable Development Policy, and the Architecture and Building Research Institute of Ministry of The Interior has established the " Gr e e n B u i l d i n g E v a l u a t i o n a n d L a b e l l i n g S y s t e m" i n 1 9 9 9 t o p r o mo t e t h e s o -called Green Building. This research takes SBTOOL which is a prevailing sustainable building assessment tool adopted all over the world as the subject of research and carries out a comprehensive analysis on the development trend of international sustainable building.

    Standard template for PM and short reportsat JIBS

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    Abstract There seems to be a gap in previous literature where economists and social scientists do not focus on factors driving emigration of health professionals between developed countries. Although, there is a lot of literature that discusses emigration of health professionals from developing towards developed countries, there are few previous studies of health professional emigration between developed to developed countries. This paper examines and analyzes factors which might be of importance in determining the direction of emigration of health professionals between developed countries. The concept of health professionals in our study contains people with more than 3 years of education within the health and social welfare sector, not referring to any particular occupation such as nurses, doctors, dentist etc; or whether they are specialized in any area. This paper analyses factors that affect emigration of Swedish health professionals, using economic and social variables in a structured regression model. The results indicate that the percentage of Swedish health professionals is directly affected by factors of destination countries such as geographical proximity, GDP(PPP) per capita, income tax rate and coworkers encouraging development
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