Research on Safety and Security Distance of Flammable Liquid Storage Tank

AbstractFlammable liquid storage tanks usually plant a potential dangerous zone. The damage gets worse and worse. In order to avoid the tank fire, the tanks extended to the nearby storage tanks-facilities and buildings. In consideration of safety conditions, flammable liquid storage tanks for the safety and security distance is necessary. Through the FDS (Fire Dynamics Simulator) computer simulation of fire, flammable liquid storage tanks for spot the fires numerical simulation to detect a fire to happen. In order to establish an optimized model, the flammable liquid storage tanks save the temperature distribution by obtaining flammable safety distance of the liquid storage tank, by talking about the current laws and regulations, by looking forward to meeting the economic and security considerations

Adverse Situations Encountered by Adolescent Students Who Return to School Following Suspension

This study aimed to investigate the adverse personal, family, peer and school situations encountered by adolescent students who had returned to school after being suspended. This was a large-scale study involving a representative population of Taiwanese adolescents. A total of 8,494 adolescent students in Southern Taiwan were recruited in the study and completed the questionnaires. The relationships between their experiences of suspension from school and adverse personal, family, peer, and school situations were examined. The results indicated that 178 (2.1%) participants had been suspended from school at some time. Compared with students who had never been suspended, those who had experienced suspension were more likely to report depression, low self-esteem, insomnia, alcohol consumption, illicit drug use, low family support, low family monitoring, high family conflict, habitual alcohol consumption, illicit drug use by family members, low rank and decreased satisfaction in their peer group, having peers with substance use and deviant behaviors, low connectedness to school, and poor academic achievement. These results indicate that adolescent students who have returned to school after suspension encounter numerous adverse situations. The psychological conditions and social contexts of these individuals need to be understood in depth, and intervention programs should be developed to help them to adjust when they return to school and to prevent school dropouts in the future

Does culture diversity affect innovation? Evidence from Chinese business group affiliated firms

We analyze how intra-group culture diversity affect group affiliated firm’s innovation. Our findings suggest that the more inconsistency on risk preference among affiliated firms in one group, the less impact of affiliated firm’s own risk culture on innovation. Specifically, we document that intra-group culture diversity impedes individual affiliated firm’s innovation through managerial and controlling agency problems. The heterogeneity test shows that size, executives, headquarter connected, location, state ownership and information quality of affiliated firms can affect intragroup culture diversity on innovation. We prove that intra-group culture diversity impedes innovation on group affiliated firms, which means a dark side of business group affiliation

Canonical interpretation of Y(10750)Y(10750) and Υ(10860)\Upsilon(10860) in the Υ\Upsilon family

Inspired by the new resonance $Y(10750)$, we calculate the masses and two-body OZI-allowed strong decays of the higher vector bottomonium sates within both screened and linear potential models. We discuss the possibilities of $\Upsilon(10860)$ and $Y(10750)$ as mixed states via the $S-D$ mixing. Our results suggest that $Y(10750)$ and $\Upsilon(10860)$ might be explained as mixed states between $5S$- and $4D$-wave vector $b\bar{b}$ states. The $Y(10750)$ and $\Upsilon(10860)$ resonances may correspond to the mixed states dominated by the $4D$- and $5S$-wave components, respectively. The mass and the strong decay behaviors of the $\Upsilon(11020)$ resonance are consistent with the assignment of the $\Upsilon(6S)$ state in the potential models.Comment: 9 pages, 4 figures. More discussions are adde

Discrete optimal actuator-fault-tolerant control for vehicle active suspension

This paper studies the discrete actuator-fault-tolerant control problem for a vehicle active suspension system under persistent road disturbances. The discrete model of vehicle active suspension with actuator faults is formulated firstly, in which the actuator faults are described as the output of an exogenous system with unknown initial values. By designed a fault diagnoser, the optimal actuator-fault-tolerant controller is derived from the discrete Riccati equation and Stein equations, respectively. Simulation results illustrate that the ride comfort, road holding ability, and suspension deflection can be reduced significantly and the reliability of the vehicle active suspension can be improved

Hamming distance spectrum of DAC codes for equiprobable binary sources

Distributed Arithmetic Coding (DAC) is an effective technique for implementing Slepian-Wolf coding (SWC). It has been shown that a DAC code partitions source space into unequal-size codebooks, so that the overall performance of DAC codes depends on the cardinality and structure of these codebooks. The problem of DAC codebook cardinality has been solved by the so-called Codebook Cardinality Spectrum (CCS). This paper extends the previous work on CCS by studying the problem of DAC codebook structure.We define Hamming Distance Spectrum (HDS) to describe DAC codebook structure and propose a mathematical method to calculate the HDS of DAC codes. The theoretical analyses are verified by experimental results

Analysis on tailed distributed arithmetic codes for uniform binary sources

Distributed Arithmetic Coding (DAC) is a variant of Arithmetic Coding (AC) that can realise Slepian-Wolf Coding (SWC) in a nonlinear way. In the previous work, we defined Codebook Cardinality Spectrum (CCS) and Hamming Distance Spectrum (HDS) for DAC. In this paper, we make use of CCS and HDS to analyze tailed DAC, a form of DAC mapping the last few symbols of each source block onto non-overlapped intervals as traditional AC. We first derive the exact HDS formula for tailless DAC, a form of DAC mapping all symbols of each source block onto overlapped intervals, and show that the HDS formula previously given is actually an approximate version. Then the HDS formula is extended to tailed DAC. We also deduce the average codebook cardinality, which is closely related to decoding complexity, and rate loss of tailed DAC with the help of CCS. The effects of tail length are extensively analyzed. It is revealed that by increasing tail length to a value not close to the bitstream length, closely-spaced codewords within the same codebook can be removed at the cost of a higher decoding complexity and a larger rate loss. Finally, theoretical analyses are verified by experiments