临危受命 以身殉国——八·一三淞沪抗战中的路景荣

路景荣（1902-1937）原名精荣。字静吾，江苏武进人。少将师参谋长。1917年其父母至湖南长沙经商，他随至长沙上中学。经商不利的父亲病故后，中学未能毕业的路景荣只身至广州谋生。受革命思潮的影响，满腔热血，壮志满怀，于1925年冬考入黄埔陆军军官学校第四期步科，1926年10月毕业。因成绩优异，曾留校工作。1929年回到常州与张瑞华结婚，时任陆军第五八三团副团长。

市政公路隧道遮光棚地域特色风貌设计方法研究

本文探讨了如何运用路景融合理念,在保证交通安全和功能的前提下,将市政公路隧道入口遮光棚设计成具有地域特色的城市景观标识。分析了路景融合理念的内涵和原则,总结了市政公路隧道遮光棚的设计要素和方法,包括形态、材质、色彩、灯光、植物等。通过以上方法和原则,提出了一个具体的设计方案,展示了如何创造出与周边地域文化特色相协调,富有石家庄魅力的隧道出入口遮光棚。同时,为市政公路隧道遮光棚设计提供了一种新的思路。

绿色生态公路建设与管理关键技术探析——以新疆首条景区生态公路为例

通过对新疆首条景区生态公路建设及管理过程中的关键技术进行分析,把握绿色生态公路在倡导资源节约、环境友好、因地制宜、路景交融以及团队管理、创新管理、精细管理、制度管理等方面的建设理念及管理思路,为我国其他地区类似公路建设提供参考与借鉴。

基于改进SOLO网络的城市道路场景实例分割方法

针对传统实例分割方法在无人驾驶技术中处理多目标分割准确率较低的问题,提出一种基于联合注意力机制的深度学习方法,实现城市交通多目标场景的实例分割.该方法通过设计联合注意力模块,对通道注意力与空间注意力进行融合,引导神经网络分支处理重要特征信息,以提升网络对多尺度目标的分割性能,解决了当前深度学习网络对城市交通多目标场景分割效果较差的问题.在城景数据集上的实验结果表明,该方法有效,可提升无人驾驶技术在城市道路交通场景下对实例分割的精确度.

浅述长沙市三环线西南段勘察设计

文章针对长沙市三环线西南段勘察设计的标准、科技创新和新技术、以人为本、彰显人性化设计新思路及强化细节设计、注重路景合一等方面进行深入论述、总结。该项目实现了高速公路与城市快速干道的完美结合。

IMPACT OF ROAD CONSTRUCTION ON VEGETATION ALONGSIDE QINGHAI-XIZANG HIGHWAY AND RAILWAY

Based on the field investigation in August 2001 and August 2002, digitalChina Vegetation Map in 2001 and Qinghai-Xizang (Tibet) Plateau Vegetation Regionalization Map in1996, vegetation characteristics along two sides of Qinghai-Xizang highway and railway are studiedin this paper. Meanwhile, the impact of Qinghai-Xizang highway and railway constructions on thevegetation types are analyzed using ARCVIEW, ARC/INFO and PATCH ANALYSIS. It was found that: 1)Qinghai-Xizang highway and railway span 9 latitudes, 12 longitudes and 6 physical geographic regions(East Qinghai and Qilian mountain steppe region, Qaidam mountain desert region, SouthQinghai-Xizang alpine meadow steppe region, Qiangtang alpine steppe region, Golog-Nagqu alpine shrubmeadow region and South Xizang mountain shrub steppe region); 2) the construction of Qinghai-Xizanghighway and railway destroyed natural vegetation and landscape, especially in 50m-wide bufferregions along both sides of the roads, it was estimated that the net primary productivity deceasedby about 30 504.62t/a and the gross biomass deceased by 432 919.25-1 436 104.3t. The losing primaryproductivity accounted for 5.70% of the annual primary productivity within Ikm-wide buffer regions(535 005.07-535 740.11t/a), and only 0.80%-0.89% of that within 10km-wide buffer regions (3 408950.45-3 810 480.92t/a). The losing gross biomass was about 9.47%-17.06% of the gross biomass within1km-wide buffer regions (7 502 971.85-25 488 342.71t), and only 1.47%-2.94% of that within10km-wide buffer regions (43 615 065.35-164 150 665.37t).

Semantic segmentation method of road scene based on Deeplabv3+ and attention mechanism

In the study of automatic driving,understanding the road scene is a key to improve driving safety.The semantic segmentation method could divide the image into different areas associated with semantic categories in accordance with the pixel level,so as to help vehicles to perceive and obtain the surrounding road environment information,which would improve driving safety.Deeplabv3+is the current popular semantic segmentation model.There are phenomena that small targets are missed and similar objects are easily misjudged during its semantic segmentation tasks,which leads to rough segmentation boundary and reduces semantic accuracy.This study focuses on the issue,based on the Deeplabv3+network structure and combined with the attention mechanism,to increase the weight of the segmentation area,and then proposes an improved Deeplabv3+fusion attention mechanism for road scene semantic segmentation method.First,a group of parallel position attention module and channel attention module are introduced on the Deeplabv3+encoding end to capture more spatial context information and high-level semantic information.Then,an attention mechanism is introduced to restore the spatial detail information,and the data shall be normalized in order to accelerate the convergence speed of the model at the decoding end.The effects of model segmentation with different attention-introducing mechanisms are compared and tested on CamVid and Cityscapes datasets.The experimental results show that the mean Intersection over Unons of the improved model segmentation accuracies on the two datasets are boosted by 6.88%and 2.58%,respectively,which is better than using Deeplabv3+.This method does not significantly increase the amount of network calculation and complexity,and has a good balance of speed and accuracy.

Slope Protection with Vegetation of Baoji(Shaanxi)-Hanzhong(Shaanxi) Expressway

With expressway development and environment protection consciousness improving, slope protection technology with vegetation has drawn much more attention. From the perspective of ecology, Baoji-Hanzhong Expressway maximized slope protection technology with vegetation and formed attracting landscapes on basis of eco-protection. This research introduced the technology of Baoji-Hanzhong Expressway, and explored a low-cost and effective biological slopeprotection way, suitable for Baoji-Hanzhong Expressway, according to slope protection technologies, at home and abroad, with botany, water and soil conservation engineering, and architecture, which fixed and stabilized slopes, prevented rainfall scouring, and advanced slope protection development in China.

Ecological Landscape Road Design

With the Traveling Road in Ma＇anshan as an example, natural and human-made plants are both used to create a four-dimensional space considering plant layers and colors. Besides, the relationships between landscape and eco-environment, input and output, and construction and maintenance should be well coordinated in order to make sure sustainable development of road afforestation. On the other hand, landscaping of the Road as a whole should be guaranteed by coordinating functional regions along roads to make sure benign evolvement of urban greening system. Finally, the principle of people first ensures road landscaping to better serve the city socially, culturally and economically. The central greenbelt combines rule and nature and match shrub and arbor to shape a linear landscape sequence in order to maximize road functions and ecological benefits and build ecological landscape-oriented roads.

Landscape Network Approach to Assess Ecological Impacts of Road Projects on Biological Conservation

Awareness of the adverse ecological effects of road and other large construction projects has resulted in a rapidly growing demand to quantitatively predict and evaluate the effects on gene flow among plants and animals in natural habitats.In this study,we evaluated the effects of different road construction scenarios on animal species movement by using the methods of ecological landscape connectivity in the typical regions of Yunnan Province,China.The results showed landscape connectivity levels(Probability of Connectivity(PC))decreased after road construction and species with lower dispersal abilities were more affected to the subsequent habitat fragmentation.First level roads affected landscape connectivity most significantly.At a distance of 100 m,the PC index decreased more than 50%.Further analysis suggested that the use of landscape connectivity to assess landscape processes revealed the adverse effects on the species movement more effectively compared with the traditional landscape pattern analysis.In addition,we conducted a graph theory and a least-cost modeling discussion,it is obvious that they are powerful tools to represent and analyze landscape networks with respect to related species movement.Network analysis offers a quantitative and simple but effective tool for ecological process assessment and biological conservation on large scales.

Scenic Beauty Estimation of Greenbelts in Arterial Roads in Chongqing City

In the research, trees along 42 roads in Chongqing were explored and es- timated in terms of aesthetics, and aesthetic tendency and major influential factors of aesthetic value of street greenbelts in Chongqing arterial roads were estimated with phychophysical method to establish SBE model of arterial road greenbelts land- scape.

Research on the road landscape evaluation system with the emphasis on the landscape ecology

As the idea of the sustainable development wins support among the people, people have already realized that not only should the road have the transportation function, but we also should consider the rationality of the road construction fi＇om the multiple angles of the landscape ecology, and the visual art and so on. From the point of view of the landscape ecology, combined with the characteristics of the landscape ecology and the overall targets and requirements of the evaluation, this article constructs a three-tier system of indicators, uses the fuzzy comprehensive evaluation model based on the analytic hierarchy process to evaluate the road landscape, and makes an empirical analysis with the evaluation of the road landscape fi＇om the Luoshi Road to the East Lake Road in the Second Loop of Wuhan City as an example.

Traffic assignment problem under tradable credit scheme in a bi-modal stochastic transportation network: A cumulative prospect theory approach

The traffic equilibrium assignment problem under tradable credit scheme(TCS) in a bi-modal stochastic transportation network is investigated in this paper. To describe traveler’s risk-taking behaviors under uncertainty, the cumulative prospect theory(CPT) is adopted. Travelers are assumed to choose the paths with the minimum perceived generalized path costs, consisting of time prospect value(PV) and monetary cost. At equilibrium with a given TCS, the endogenous reference points and credit price remain constant, and are consistent with the equilibrium flow pattern and the corresponding travel time distributions of road sub-network. To describe such an equilibrium state, the CPT-based stochastic user equilibrium(SUE) conditions can be formulated under TCS. An equivalent variational inequality(VI) model embedding a parameterized fixed point(FP) model is then established, with its properties analyzed theoretically. A heuristic solution algorithm is developed to solve the model, which contains two-layer iterations. The outer iteration is a bisection-based contraction method to find the equilibrium credit price, and the inner iteration is essentially the method of successive averages(MSA) to determine the corresponding CPT-based SUE network flow pattern. Numerical experiments are provided to validate the model and algorithm.

Study on Expressway Road-area Ecosystem

Ecological restoration and reconstruction refers to how to prevent the main factors and processes from further degrading the ecosystem, as well as how to regulate and optimize the exchanging process and the space-time cycling system of substance, energy and information through man force, in order to restore the structure, function and eco-potentiality back to the original level or even higher, with the help of certain biological, ecological and engineering techniques. Ecological restoration and reconstruction involves problems of different levels and different fields, with the focus on the ecosystem （species communities）, the landscape and certain areas. Problems in the process of road-area ecosystem construction are as follows： attention is paid to the conditions of the road itself and the short-term effects, not to the natural propagation of species within the whole road-area or the ecological safety area; the importance of biological diversity in ecological restoration is neglected; the property of heterogeneity necessary for a sound ecosystem is ignored; the ecological interaction among species doesn＇t earn enough attention; properties like localization and adaptability in different districts are not paid enough attention. Landscape ecology can guide the work of road-area ecosystem restoration, through the space pattern.

The Study on Opportunities and Challenges to the Chinese High-Speed Rail Export

Firstly on China＇s exports of high-speed rail background, purpose, significance, research methods are introduced And the high-speed railway of our country export situation and the future prospects for development. Secondly, this paper focuses on China＇s high-speed rail export opportunities, countries high iron deficiency causes analysis, and our geographical planning effective in countries support background; then illuslrate high iron exports encountered challenges affect. Finally through the analysis of the problem, according to China＇s basic national conditions proposed corresponding

Road-Spine versus Road-Tube： Roads as Space Generators

Arteries devoted to sustain streams of users, resources and debris, are a foremost factor and pre-condition of the development of urban areas and of the transformation of landscapes. Roadscapes reflect outcomes related to super urbanization tendencies. Often conceived as isolated tubes, roads cut and obscure form, structure, biotic and abiotic factors of sites, urban fabrics and spaces. A broad vision of landscape is a basis for reconceiving roads. The concept of road-spine emerges： the road is conceived as the basis of a bundle of routes, nodes, surfaces, poles and tiles, devised to frame and shape a mosaic of open spaces, crops, farms, stores, basins and service areas. The road-spine entails the idea of a permeable infrastructure devised to integrate diverse functions： from serving various forms of motion, by ordering an isotropic grid of routes, to framing a porous urbanscape; from disposing surfaces meant to preserve biocenosis and biotopes, to favoring osmosis amid land uses. It also prefigures a distribution of land uses dependent on site vocations, and a mosaic of scenarios open to encounter, evasion, rest, amusement, participation, and to spontaneous practices of space.

Measurement and analysis of Doppler shift for high-speed rail scenario

Based on the analysis of the impact of Doppler shift to the railway dedicated mobile communication quality under the condition of high-speed mobility,this paper presents a Doppler shift measurement approach based on the phase estimation of frequency correction channel(FCCH) which correctly reflects the time-varying characteristic of the channel with a testing system developed.The Doppler shift data under the high-speed condition is collected,processed,analyzed,and compared with the simulation results.The scientific laws of the Doppler shift distribution of radio channel under high-speed condition are obtained.These data and analysis are essential for the establishment of high-speed railway Doppler power spectrum model and the development of the key technology of antiDoppler shift.

Pathological Manifestations on Concrete Bridges at Recife＇s Metropolitan Area

Bridges are structures being used to cross rivers, lakes or any other obstacles which involve water. These instruments are commonly used in cities like Recife, which consists of several islands. However, it is common in this city to observe the fast deterioration of these structures that have been built for decades and are subjected to structural recoveries only when they present a possible imminent collapse. The maintenance of these constructions, often used as tourist spots, is essential because of the economic importance, while these structures are responsible for transporting people and cargo, and also play a key role in the city＇s roads. This paper aims to present and assess the conservation status of these bridges through the study of possible pathologies found at Princesa Isabel Bridge, Government Agamenon Bridge, Ponte Giratória Bridge and Paulo Guerra Bridge. The methodology for its inspection will be prescribed by ABNT NBR-9452/86, which provides for ＂Surveys of Concrete Bridges/Viaducts＂. After analysis, it was found that most bridges problems were caused by the presence of moisture that accumulates in bridges due to the absence or malfunction of drainage systems.

Incommensurability in Second Language Acquisition Approaches

Researchers in the field of Second Language Acquisition （SLA） have been taking different routes. Some researchers make linguistic-cognitive issues their inquire object and pursue objectivity with quantitative research methods. Other researchers regard the social context of activity as an essential characteristic of learning and teaching. These groups of researchers make use of qualitative research methods like case study, grounded theory, narrative inquiry, and ethnography. There are many other routes that SLA researchers have taken, but the two just mentioned are perhaps the most predominant ones and the ones that are most easily contrasted. The present paper explores the disparity between the different research paths from the perspective of philosophy of science echoing the notion of incommensurability. In this paper the author argues that the differences between different SLA perspectives are not only commensurable but wholesome for the development of SLA.