Methodology for Road Defect Detection and Administration Based on Mobile Mapping Data

A detailed inspection of roads requires highly detailed spatial data with sufficient precision to deliver an accurate geometry and to describe road defects visually.This paper presents a novel method for the detection of road defects.The input data for road defect detection included point clouds and orthomosaics gathered by mobile mapping technology.The defects were categorized in three major groups with the following geometric primitives:points,lines and polygons.The method suggests the detection of point objects from matched point clouds,panoramic images and ortho photos.Defects were mapped as point,line or polygon geometries,directly derived from orthomosaics and panoramic images.Besides the geometric position of road defects,all objects were assigned to a variety of attributes:defect type,surface material,center-of-gravity,area,length,corresponding image of the defect and degree of damage.A spatial dataset comprising defect values with a matching data type was created to perform the attribute analysis quickly and correctly.The final product is a spatial vector data set,consisting of points,lines and polygons,which contains attributes with further information and geometry.This paper demonstrates that mobile mapping suits a large-scale feature extraction of road infrastructure defects.By its simplicity and flexibility,the presented methodology allows it to be easily adapted to extract further feature types with their attributes.This makes the proposed approach a vital tool for data extraction settings with multiple mobile mapping data analysts,e.g.,offline crowdsourcing.

Modelling of the Resin Penetration Rate into the Archaeological Wood Cell Wall： The Methodology of Experimental Design

The penetration modeling of an adhesive into the fiber requires the measurement of various properties of resin and fiber： the resin viscosity, its surface tension, the penetration depth and the timber pore radius. This study is based on the screening technique that identifies the factors sensed by the experimenter. In order to determine the optimum processing conditions and find the combination of parameters that maximize the productivity in the experimental phase, a geometric illustration of the response has been made. The results are： the pores radius （4 μm）, surface tension （62.5 mN/m）, depth （10 μm） and viscosity （2,000 Cp）.

On the teaching content of Language and Culture

To cultivate English majors＇ culture awareness and improve their English integrated competence, this paper clarifies the reasons and the choice of the content for the teaching of Language and Culture. The results of the teaching and the investigation conducted by the author show that the choice of the teaching materials and the topics for the class must be included in the teaching plan. Besides, this paper also probed into the most difficult topic, the easiest topic, the topics that need to be explained more and the topics that need to be explained less in class; and the similarity and differences of the teaching contents for students in different grades are also analyzed. In the end, proper sources of the comparison of English and Chinese languages and cultures are revealed in order to enlarge students＇ knowledge and improve their competence in using English.

COLLECTING AND ANALYSING OUTCOMES DATA FROM ACUPUNCTURE TRAINING INSTITUTIONS: A COLLABORATIVE PROJECT

If clinical research is to be relevant to real-world decision making it requires interventions that reflect usual practice.Observational studies may provide the best approach to defining this.Siting studies in the student clinics of acupuncture teaching institutions(ATIs).has potential benefits for the institutions as well as for researchers.This is the first such multi-centre study accredited ATIs