The Dynamic Response of Shallow Buried Structure under the Action of Explosion Load

2014 ◽  
Vol 580-583 ◽  
pp. 1122-1126
Author(s):  
Qian Zhang ◽  
Hai Bing Wei ◽  
Jun Hai Zhao

Simulating and analyzing the dynamic response of the shallow underground structure under the ground explosions by LS-DYNA. The results show that the ground shock under ground explosions contains two different forms, one is direct impact ground shock and the other is indirect impact ground shock; with the increasing of depth, the ground shock decreases. The effective stress of the upper part of the roof is larger than other parts of the shallow underground structure; the effective strain of the corner of the roof is larger than other parts of the shallow underground structure.

2010 ◽  
Vol 145 ◽  
pp. 410-413 ◽  
Author(s):  
Jing Wang ◽  
He Yong Han ◽  
Qing Xue Huang ◽  
Jun Wang

The reasons for impact pressure are obtained by the research the hydraulic system of Hydraulic Rolling-Cut Shear. The impact pressure of hydraulic system is divided into direct impact and indirect impact. Based on analyzing the actual situation the measures should be taken to reduce the impact pressure when design hydraulic system. The suitable length of pipeline can improve the performance of the hydraulic system because the length is important for the impact pressure. The accumulator can absorb impact pressure and improve the work situation of servo valve. Therefore, the suitable accumulators should be set in the hydraulic system. The study provides theory basis for the pipe design of large hydraulic servo system.


Author(s):  
Chane-Yuan Yang ◽  
Yu-Shu Chien ◽  
Jun-Hong Chou

Abstract The study of nonideal mixing effect on the dynamic behaviors of CSTRs has very rarely been published in the literature. In this work, Cholette’s model is employed to explore the nonideal mixing effect on the dynamic response of a nonisothermal CSTR. The analysis shows that the mixing parameter n (the fraction of the feed entering the zone of perfect mixing) and m (the fraction of the total volume of the reactor), indeed affect the characteristic roots of transfer function of a real CSTR, which determine the system stability. On the other hand, the inverse response and overshoot response are also affected by the nonideal mixing in a nonisothemal CSTR. These results are of much help for the design and control of a real CSTR.


2018 ◽  
Vol 51 (5) ◽  
pp. 749-769 ◽  
Author(s):  
Ank Michels ◽  
Harmen Binnema

Although deliberative reforms have been proposed to strengthen democracy, little is known about their impact on politics, public policies, and society. This article develops a framework to systematically assess this impact, differentiating between direct and indirect forms of impact. We apply this framework to two cases of deliberative citizens’ summits in the Netherlands. Our analysis reveals that these summits have a limited direct impact on local politics and policy making, but a relatively strong indirect impact on the local community. The article also discusses some conditions that mediate the impact of the forum.


Author(s):  
Uma Soni ◽  
Beena Yadav

<div><p><em>The study was conducted in Haryana and Rajasthan states covering a sample of 200 respondents (100 male and female each) from two villages and two slum areas of each state. Print (VCD) as well as electronic media (Booklet) was developed, standardized and exposed to the selected respondents on five risk oriented habits viz; use of tobacco; drinking alcohol; and  poor environmental, eating and personal habits. There was significant gain in knowledge about health hazards due to all the five risk oriented habits. The gain in knowledge about persuasive messages on consumption of tobacco was highest followed by use of alcohol, poor personal, environmental and eating habits. Direct impact of persuasive messages was perceived in term of ease in understanding and following which would help the respondents in dealing with the related problems immediately. Indirect impact of intervention programme was perceived in terms of changes in the habits in the coming time as it has improved consciousness, confidence and motivation to deal with the risk oriented habits.  </em></p></div>


2020 ◽  
Vol 10 ◽  
pp. 299-311
Author(s):  
Achmad Budi Susetyo ◽  
Agus Eko Sujianto ◽  
Mochamad Arif Faizin ◽  
Kiki Yunita Anjarsari ◽  
Charina Dwi Rivylina Nafisah

Firm value is a basis for investors in deciding whether or not to invest in a firm. Therefore, a study on issuer’s strategies to maximize firm value requires special attention, especially in dealing with the Islamic capital market which is growing rapidly from time to time. A particular study is important to be conducted to look at the factors that have a direct or indirect effect on a firm's value, which includes; profitability, capital structure, and dividend policy. The path analysis approach is employed in the current study to reveal the effect of profitability on firm value, both directly and indirectly, with the intermediaries of capital structure and dividend policy. The results of the analysis indicate that profitability has a direct positive and significant effect on firm value and a negative and significant effect on capital structure, while the capital structure has a negative and insignificant effect on firm value. Indirectly, dividend policy moderates and strengthens the effect of profitability on firm value, but on the other hand, the capital structure does not mediate the effect of profitability on firm value. The absence of capital structure role in mediating the relationship between profitability and the firm value indicates that investors can determine the value of the firm directly by simply looking at the level of profitability, regardless of management’s strategy in arranging the capital structure.


Game Theory ◽  
2017 ◽  
pp. 106-119
Author(s):  
Khaled Suwais

Representing players' strategies in game theory has a direct impact on the players' performance. The state of art shows that automata are one of the primary techniques used for representing players' strategies and behaviors. In this paper, the author will identify different types of automata and assess their utilization in the field of game theory. Is has been found that finite automata, adaptive automata, and cellular automata are widely adopted in game theory. The utilization of finite automata is found to be limited to represent simpler players' behavior. On the other hand, adaptive automata and cellular automata are intensively applied in complex environments, where the number of interacted players is large and therefore, representing complex behaviors are needed.


2022 ◽  
pp. 100-117
Author(s):  
Disha Sharma ◽  
Sumona Bhattacharya

Digital media is working as a different planet showing the disparities between the fantasies of what everyone thought about their lives and the reality of how they are actually living. It is important to have hedonic and eudemonic happiness in the life of an adolescent which contributes to overall well-being and to flourish with achievements, but 75% of 12-22 years are on digital media and spend on average two hours a day there, and this issue needs to be addressed. The first section of the chapter deals with the disruptions created with the digital media in order the way adolescents compare their lives with everyone highlighted on media. The other section targets the direct impact of the same on adolescent lives and analyses the various recovery measures and stages required and various techniques the parents and peers can use to deal with such situations. The basic purpose of this is to add value in the world of economy of attention and how to outgrow it without hurting oneself and not turning micro moments into macro moments of digital media.


Koedoe ◽  
1993 ◽  
Vol 36 (1) ◽  
Author(s):  
P. Ie F.N. Mouton ◽  
J.H. Van Wyk

A survey of the reptile fauna of the Katse Dam catchment area in the Lesotho Highlands was conducted to assess the possible impact of the dam, once it is full, on reptile populations in the area. With only seven lizard and five snake species recorded to date, species richness in the catchment area is much lower than expected. It is inferred that species richness in the western and central districts of the Lesotho Highlands in general, is low, emphasising the role of the Drakensberg-Maluti mountain complex as a barrier to species dispersal. The reptile fauna of the western/central highland areas is primarily composed of widespread generalist species. The eastern highland areas, on the other hand, have a substantial endemic component. indicating the greater potential of these areas as a conservatory of geographical isolates. The direct impact of the Katse Dam on the local reptile fauna is expected to be minimal. Snake numbers are low in the catchment area and this may be the result of human impact. Reproductive cycles of the lizard species in the catchment area do not differ from the cycles of the same species at lower altitudes elsewhere.


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