scholarly journals The Exploration of Hazard Prediction Techniques and Security Management Strategies for Domestic Road Construction

2015 ◽  
Vol 9 (1) ◽  
pp. 974-978
Author(s):  
Chenhao Guo ◽  
Yapeng Yan ◽  
Tiansong Wang

With the rapid development of the economy in China and the speeding up of urbanization, urban roads and highways in China continue to increase. However, due to some of the characteristics of road construction, long duration, high fluidity, large volume of work and complex process, there exist many security problems during the period of construction, which determines that security management is unoptimistic on construction site. This paper makes a comprehensive research over the achievements of domestic and foreign experts and analyzes the causes of the security incidents in domestic road construction, so as to further clarify that the deep reasons for the security incidents in management. Based on this, the author advances the corresponding security management measures. With comprehensive evaluation methods applied on road construction site, the security situation can be predicted and prevented whenever and wherever possible.

2020 ◽  
Vol 2 (1) ◽  
pp. 8
Author(s):  
Jianhui Wang

<p>At present, all walks of life are carrying out deepening reforms, and the construction industry is exploring scientific and more feasible technical management measures to ensure the engineering quality of enterprises. Based on this, this paper briefly expounds the problems existing in the process of construction project management and construction design control, and puts forward a series of effective measures for Europeanization of construction design, aiming at improving the overall construction level of the construction industry and promoting the rapid development of the construction industry.</p>


2020 ◽  
Vol 6 (3) ◽  
pp. 53
Author(s):  
Guoxiang Zhang

<p>With the rapid development of modern economy, the scale of cities is constantly expanding and the population is constantly growing. Strengthening urban construction has become one of the important work contents of socialist modernization in China. To build a modern city, road construction is the key work of urbanization. Subgrade is the most important construction link in urban road construction and the important foundation of road engineering. In this paper, combined with the specific conditions of urban roads, the construction technology and management measures of urban road subgrade are deeply explored, and perfect construction schemes and management measures are formulated to provide more reliable reference basis for promoting urban development and construction.</p>


2019 ◽  
Vol 3 (4) ◽  
Author(s):  
Jie Li

Informationization and automation are important in library management due to the development of computer technology and network technology. Although computer networks bring great convenience and improvement to library management’s efficiency and quality, there are many security issues that could tag along with networks. The library information is prone to leak due to virus and hackers as well as the transparency of the network. Thus, this leads to a high security risk in library management. Therefore, this paper mainly analyses the security management strategies of library computer networks.


1999 ◽  
Vol 40 (10) ◽  
pp. 137-144 ◽  
Author(s):  
Andrew T. Der

The regulation of development-related activities can require complex approaches to the management of nonpoint source pollution (NPSP) associated with such activities. Experience has shown that growth and transportation needs can be accommodated in a manner which avoids and minimizes stream and wetland impacts while remaining compatible with effective NPSP management strategies, herein referred to as stormwater management (SWM). The Maryland Department of the Environment (MDE) has developed a “one stop shop” review and assessment procedure where applicable federal and State regulatory programs are combined into a single process where on-site conditions are assessed, potential impacts are identified and mitigative practices are proposed sufficient to offset habitat loss and comply with water quality standards. The example presented is the first of several development projects in a 405 hectare (1000 acre) watershed of the Potomac River in the greater Washington, DC area of Maryland. The project, submitted in 1989, proposed stream and wetland impacts for road construction and runoff catchment basins which were determined by MDE to be avoidable. Impacts were reduced and mitigated by design revisions and innovative approaches to wetland re-creation and SWM. Subsequent development projects in this watershed are currently expanding in a manner which utilizes and refines data obtained from this initial project with completion expected by 2003.


Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 177
Author(s):  
Aline Moreira Dias ◽  
Miguel Borges ◽  
Maria Carolina Blassioli Moraes ◽  
Matheus Lorran Figueira Coelho ◽  
Andrej Čokl ◽  
...  

Stink bugs are major pests in diverse crops around the world. Pest management strategies based on insect behavioral manipulation could help to develop biorational management strategies of stink bugs. Insect mating disruption using vibratory signals is an approach with high potential for pest management. The objective of this work was to investigate the effect of conspecific female rival signals on the mating behavior and copulation of three stink bug species to establish their potential for mating disruption. Previously recorded female rival signals were played back to bean plants where pairs of the Neotropical brown stink bug, Euschistus heros, and two green stink bugs, Chinavia ubica and Chinavia impicticornis were placed. Vibratory communication and mating behavior were recorded for each pair throughout the experimental time (20 min). Female rival signals show a disrupting effect on the reproductive behavior of three conspecific investigated stink bug species. This effect was more clearly expressed in E. heros and C. ubica than in C. impicticornis. The likelihood of copulating in pairs placed on control plants, without rival signals, increased 29.41 times in E. heros, 4.6 times in C. ubica and 1.71 times in C. impicticornis. However, in the last case, the effect of female rivalry signals in copulation was not significant. The effect of mating disruption of female rival signals of the three stink bug species may originate from the observed reduction in specific vibratory communication signals emitted, which influences the duet formation and further development of different phases of mating behavior. Our results suggest that female rival signals have potential for application in manipulation and disruption of mating behavior of stink bugs. Further work needs to focus on the effects of female rival signals used in long duration experiments and also their interactions with chemical communication of stink bugs.


Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 821 ◽  
Author(s):  
Meimei Wu ◽  
Wei Ge ◽  
Zongkun Li ◽  
Zening Wu ◽  
Hexiang Zhang ◽  
...  

Despite the rapid development of risk analysis in dam engineering, there is a relative absence of research on the environmental impact of dam break. As a systematic theory, set pair analysis has a good effect in dealing with uncertainties, although the result is relatively rough and easy to distort. A connection degree of five grades and a generalized set of potential are introduced to improve traditional set pair analysis. Combined with the index system, the evaluation model of the environmental impact of dam break is established, which is based on generalized set pair analysis. Taking Sheheji Reservoir dam as an example, a comparison of evaluation results of fuzzy mathematics theory and generalized set pair analysis is made, which verifies the scientificity and practicability of the method proposed in this paper. The results show that the evaluation grade of the environmental impact of dam break at Sheheji Reservoir is serious, and appropriate management measures should be taken to reduce the risk.


Author(s):  
Guicheng Wang ◽  
Chunyan Zhang ◽  
Hongjie Pei ◽  
Yunming Zhu ◽  
Chungen Shen ◽  
...  

The surface quality is always the crucial element of machined quality in precision ultra-precision metal cutting. A new concept that the surface integrity should include the edge quality of parts is put forward In this paper, the weight value of a series of characteristic parameters of surface integrity are calculated with using analytic hierarchy process, three basic methods of evaluating surface integrity are presented, and the comprehensive evaluation system has been formed which will theoretically play a great important role on rapid development in the precision machining.


2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Yiliang Zeng ◽  
Lihao Zhang ◽  
Jiahong Zhao ◽  
Jinhui Lan ◽  
Biao Li

Campus security incidents occur from time to time, which seriously affect the public security. In recent years, the rapid development of artificial intelligence has brought technical support for campus intelligent security. In order to quickly recognize and locate dangerous targets on campus, an improved YOLOv3-Tiny model is proposed for dangerous target detection. Since the biggest advantage of this model is that it can achieve higher precision with very fewer parameters than YOLOv3-Tiny, it is one of the Tinier-YOLO models. In this paper, the dangerous targets include dangerous objects and dangerous actions. The main contributions of this work include the following: firstly, the detection of dangerous objects and dangerous actions is integrated into one model, and the model can achieve higher accuracy with fewer parameters. Secondly, to solve the problem of insufficient YOLOv3-Tiny target detection, a jump-join repetitious learning (JRL) structure is proposed, combined with the spatial pyramid pooling (SPP), which serves as the new backbone network of YOLOv3-Tiny and can accelerate the speed of feature extraction while integrating features of different scales. Finally, the soft-NMS and DIoU-NMS algorithm are combined to effectively reduce the missing detection when two targets are too close. Experimental tests on self-made datasets of dangerous targets show that the average MAP value of the JRL-YOLO algorithm is 85.03%, which increases by 3.22 percent compared with YOLOv3-Tiny. On the VOC2007 dataset, the proposed method has a 9.29 percent increase in detection accuracy compared to that using YOLOv3-Tiny and a 2.38 percent increase compared to that employing YOLOv4-Tiny, respectively. These results all evidence the great improvement in detection accuracy brought by the proposed method. Moreover, when testing the dataset of dangerous targets, the model size of JRL-YOLO is 5.84 M, which is about one-fifth of the size of YOLOv3-Tiny (33.1 M) and one-third of the size of YOLOv4-Tiny (22.4 M), separately.


2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Jiayi Miao

With the rapid development of China's economy, the construction scale of urban transport is also expanding. Among them, municipal road construction is an important part of urban infrastructure as well as an important guarantee for the development of people's livelihood; it is also an important driving force to promote urban transport system and social life development. The author expounds the importance and basic requirements of urban road designing, and discusses some common problems and countermeasures, hoping to be helpful.


2019 ◽  
Vol 3 (3) ◽  
pp. 129
Author(s):  
Yingying Wei

<p>Construction project is a project involving many kinds of jobs and a large number of workers. The pros and cons of the construction project site construction management and the measures level directly influences the construction duration, cost and quality. This paper discusses the function of strengthening construction site construction management, the problems existing in construction site construction management and the measures to improve construction site construction management., with a view to providing some meaningful reference for our country's related research of construction project site construction management measures.</p>


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