traffic

摘要： The feeling of being trapped in a car in an endless stream of non-moving traffic while“inhuman”traffic lights rigidly change color to a set rhythm is familiar to many.Many spend more time looking for parking than the trip to the destination would take.For ambulances,traffic problems can mean lost lives.A traffic accident usually causes traffic on a city street to pile up long before the police can arrive at the scene.

摘要： The present study reports vehicle collisions of Bufotes viridis(The green toad)in Konya province from Turkey.Our study was performed in more than fifty localities on Yunak-Akşehir highway(D-695).The records were taken in a short time;it is important and remarkable to come across a large number of dead individuals of an amphibian species in a short time.Among all recorded mortalities(n=246),the highest value belonged to subadults(45%of the cases),followed by juveniles(35%of the cases).The lowest rate among the carcasses was belonged to the adult individuals(20%of the cases).There can be many factors that cause the road kills:These factors are grouped according to the literature under the headings of“direct causes”,“indirect causes”and“potential causes”for the road kills.In this study,we evaluated the effects of some factors for Bufotes viridis.In general,all terrestrial and semi-aquatic amphibian species,which populations are located the roadsides,suffer from road kills.Because of this situation,there is a need for both further studies and habitat restorations for amphibians.

摘要： Point mutations in SPG4,the gene encoding spastin,are a frequent cause of hereditary spastic paraplegia(HSP).In some complex HSP cases,there is cognitive impairment.Dynamic trafficking of AMPA receptors into and out of synapses is a key determinant of synaptic plasticity and further implicates learning and memory.However,the exact molecular mechanisms underlying AMPARs trafficking still remains unclear.Here,we performed immunofluorescence staining,whole-cell patch clamp,GST pull-down,and CoIP assays.First,we found that the desumoylation mutant at 427-site of spastin lost its microtubule severing function.Second,our results revealed the maturation of dendritic spines and the increase of GluA2 membrane trafficking after overexpression de-SUMO spastin in cultured hippocampal neurons.Also,we found that the interaction between de SUMO spastin and the GluA2 subunits increased in vitro and in vivo,which were enhanced by the 210-site phosphorylation of spastin at the mean time.Similarly,the phosphorylation modifications enhanced the maturation of dendritic spines and the increasing membrane GluA2 caused by de SUMO spastin.Thus,we show the reciprocal regulation between the phosphorylation and sumoylation of spastin,and jointly modulate the AMPA receptor GluA2 subunits trafficking in cultured hippocampal neurons.

摘要： As teenagers, we should always keep safety in mind. But how can we keep safe? Here are some of my suggestions.First, we should eat healthily and safely. Don’t eat too much. Eating some junk food will do harm to our health. Second, we should always obey the traffic rules.

摘要： In recent years,regional integration of Chinese cities has gradually developed.Meanwhile,metropolitan areas and urban agglomerations have taken shape.On the one hand,the development of the metropolitan area has brought about urban spatial expansion,as well as population and economic growth.On the other hand,it has led to problems such as the urban sprawl and suburbanization,increasing pressure on environmental resources,and the decline of urban central areas.Under this background,the Guangdong-Hong Kong-Macao Greater Bay Area Development Plan Outline proposes to accelerate the integration of Guangzhou-Foshan(Guang Fo)Metropolitan Coordinating Region(MCR),and to construct a networked space pattern driven by urban poles and shafts.Based on the academic research of Metropolitan Coordinating Region(MCR),as well as the theory of urban spatial structure and morphology,this study focus on urban spatial patterns and elements in different scales,from two individual cites(Guangzhou and Foshan),Guang Fo MCR,to Guangdong-Hong Kong-Macao(GHM)Greater Bay Area.With GIS and the mapping method,the spatial elements such as green space,water system,built-up area,road network,rail transit network and main pivot points of the Guang Fo MCR are classified,laid out individually and again overlaid in order to figure out the relationship of these elements.At the same time,through the comparative case study of the Randstad MCR in the Netherlands,the enlightenment of solving the development problem of MCR is hopefully to be obtained.As delta cities,the Guang Fo MCR is cut by the multi-channel water network,while the urban built-up area is concentrated in the middle of the MCR and spread out along the traffic corridor to the suburban district.The traffic structure of the Guang Fo MCR is characterized by the outward radiation of the central area of Guangzhou and Foshan.Simultaneously,the traffic connection between Guangzhou and Foshan is relatively weak.Compared with the polycentric spatial structure,which is called Decentralized Compact pattern of Randstad MCR,the Guang Fo MCR presents a city form with little hierarchy but homogeneity,and its urban space is disorderly spread.The bluegreen system of water and vegetation is fragmented because of the urban invasion in Guang Fo MCR,while the green heart in central Randstad is well preserved.As a result,it is well advised to explore a more resilient and ecological urban development in Guang Fo MCR.

摘要： Traffic police of GuangYuan SiChuan China,Good! Very Good!(中国四川广元交通警察好!非常好!)7月5日上午,一名拄着拐的外国美女来到四川省广元市公安局交警支队特勤大队,一把握住民警的手,深情地说出这番话。日前,广元市公安局交警支队特勤大队通过6天5夜的持续奋战,成功侦破广元建市以来首例涉外交通肇事逃逸案件。

摘要： The vibrations induced by railway traffic can affect the stability of structures, buildings and buried structures. To evaluate this impact, this study was carried out considering the case of the Regional Express Train which will connect Dakar to Blaise Diagne International Airport. For that, the modeling software Plaxis dynamic [1], able to generate harmonic loads, is used and permitted to have a dynamic analysis and comparison between static and dynamic load for one passage of the train for 2.56 s. In the modeling, two behavior laws were used those of Mohr Coulomb for the layers of soil, embankments and the form layer, and then the linear elastic model for the rest of the elements. The results obtained showed extreme vertical displacements 40.18 mm for the building and when no load is applied on the track, there was 40.24 mm for a static load, and 40.17 mm for a dynamic load. Also, it was observed for the track a displacement of 33.73 mm for a static load and 19.83 mm for a dynamic load. However, further studies are necessary to take into account the permanent deformation after an accurate cycle of train passage in order to better evaluate the railway traffic impact.

摘要： The previous research (Danno & Taniguchi, 2015) showed that near-miss incident experience was basically reduced by the Empathy Quotient (EQ) and was disturbed by the Systemizing Quotient (SQ) when the Empathy Quotient was low, based on the Empathizing and Systemizing (E-S) model using a web survey [1]. It means that drivers whose EQ was low and SQ was high had more near-miss incident experience. It suggested that drivers who have a stronger Empathizing function may have stronger hazard perception ability although the Systemizing function may weaken hazard perception ability when Empathizing is weak. And, then, it was revealed that the D score (standard SQ (T) score minus standard EQ (T) score) had a significant effect on the near-miss incident experience. Those results implied that a D score, which is used to classify “E-S types”, should have a relationship with near-miss incident experience, i.e. , hazard perception ability. The EQ and SQ scores were supposed to relate to the cognitive ability to estimate other road users’ mental situations and predict their behavior or to recognize stable laws in traffic situations. The aim of this research was to investigate the relationship between a driver’s visual attention ability (gaze movement) and hazard (near-miss incident) perception ability of different EQ and SQ scores. Drivers’ Real-time Useful Field of View (rUFOV) [2] was measured under normal and hasty driving conditions in a driving simulator which had six scenarios of traffic situation. The result from seven participants who had different EQ and SQ scores showed that a driver’s visual attention ability (gaze movement) corresponds to their scores. This pilot test research revealed a possibility that the individual difference in cognitive trait with E-S model could be a promising tool to understand the mechanism of hazard perception since a D score is used to classify “E-S types”.

摘要： Aiming at the problem of lack of data model to analyze the level of transportation integration, the paper taking Changsha-Zhuzhou-Xiangtan City Group of China as the research object, based on the Gravity measurement model, transportation comprehensive distance model, weighted road density model, analysis of Changsha-Zhuzhou-Xiangtan City Group accessibility and transportation integration level. A new method to measure the level of traffic integration is proposed and verified by the road network data and socio-economic data of Changsha-Zhuzhou-Xiangtan City Group. The results show that: Changsha-Zhuzhou-Xiangtan City Group traffic accessibility was “point to surface” shape distribution, taking the core region of Changsha as the optimal, Xiangtan, Zhuzhou, Changsha County next, in remote Yanling County, Chaling county has the lowest accessibility;the correlation between traffic network connection degree and economic connection degree reached 0.871, indicating that the transportation integration level of urban agglomerations has a high degree of fit with the level of economic integration. The research results on the one hand for the Chang-Zhuzhou-Xiangtan urban agglomeration traffic present situation to make an annotation;on the other hand, that provide a reference for further optimization of Changsha-Zhuzhou-Xiangtan urban agglomeration traffic planning.

摘要： Accurate short-term traffic flow prediction plays a crucial role in intelligent transportation system (ITS), because it can assist both traffic authorities and individual travelers make better decisions. Previous researches mostly focus on shallow traffic prediction models, which performances were unsatisfying since short-term traffic flow exhibits the characteristics of high nonlinearity, complexity and chaos. Taking the spatial and temporal correlations into consideration, a new traffic flow prediction method is proposed with the basis on the road network topology and gated recurrent unit (GRU). This method can help researchers without professional traffic knowledge extracting generic traffic flow features effectively and efficiently. Experiments are conducted by using real traffic flow data collected from the Caltrans Performance Measurement System (PEMS) database in San Diego and Oakland from June 15, 2017 to September 27, 2017. The results demonstrate that our method outperforms other traditional approaches in terms of mean absolute percentage error (MAPE), symmetric mean absolute percentage error (SMAPE) and root mean square error (RMSE).

摘要： 本发明涉及电子产品生产制造领域，具体涉及一种提高OLT测试Traffic效率的测试方法，包括以下步骤：将待测产品下挂在PON口，并对相应的Spiltter进行配置和注册；采用支持空置卡槽升级10G Module的OLT，将OLT的10G module port和发包设备对应接口连接；待测产品每个Lan Port连接到发包设备GE port口；发包工具直接进行产品测试。本测试方法无需OLT每个PON口和对应OLT上连GE口，也无需增加相应数量的GE口，能够一次进行8pcs产品测试,效率及OLT设备利用率高。