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Cruise Control System Based on Joint Simulation of CarSim and Simulink  [PDF]
Shengchao Zhao, Lijing Zhu
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104724
Abstract:
In order to solve the difficulty of the driver’s continuous steering project in the FSEC, the research on the cruise control system based on the fuzzy PID control is carried for assisting the driver’s operation. Firstly, the input and output of fuzzy control is determined, and the fuzzy rule table is established to complete the design of fuzzy PID control system. Secondly, the fuzzy controller is established in MATLAB, and the fuzzy PID model is built in Simulink. After the creation of the FSEC racing car model and the track model in the CarSim, the joint simulation of CarSim and Simulink is carried out. Simulation results show that the racing car equipped with the cruise control system based on fuzzy PID control finishes the project faster than the unused car, and the vehicle speed is more stable.
Comment on "Quantum Strategy Without Entanglement"
Shengchao Ding
Physics , 2006,
Abstract: We make remarks on the paper of Du et al (quant-ph/0011078) by pointing out that the quantum strategy proposed by the paper is trivial to the card game and proposing a simple classical strategy to make the game in classical sense fair too.
cgaTOH: Extended Approach for Identifying Tracts of Homozygosity
Li Zhang, Mohammed S. Orloff, Sean Reber, Shengchao Li, Ye Zhao, Charis Eng
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0057772
Abstract: Identification of disease variants via homozygosity mapping and investigation of the effects of genome-wide homozygosity regions on traits of biomedical importance have been widely applied recently. Nonetheless, the existing methods and algorithms to identify long tracts of homozygosity (TOH) are not able to provide efficient and rigorous regions for further downstream association investigation. We expanded current methods to identify TOHs by defining “surrogate-TOH”, a region covering a cluster of TOHs with specific characteristics. Our defined surrogate-TOH includes cTOH, viz a common TOH region where at least ten TOHs present; gTOH, whereby a group of highly overlapping TOHs share proximal boundaries; and aTOH, which are allelically-matched TOHs. Searching for gTOH and aTOH was based on a repeated binary spectral clustering algorithm, where a hierarchy of clusters is created and represented by a TOH cluster tree. Based on the proposed method of identifying different species of surrogate-TOH, our cgaTOH software was developed. The software provides an intuitive and interactive visualization tool for better investigation of the high-throughput output with special interactive navigation rings, which will find its applicability in both conventional association studies and more sophisticated downstream analyses. NCBI genome map viewer is incorporated into the system. Moreover, we discuss the choice of implementing appropriate empirical ranges of critical parameters by applying to disease models. This method identifies various patterned clusters of SNPs demonstrating extended homozygosity, thus one can observe different aspects of the multi-faceted characteristics of TOHs.
Recipes and mechanisms of cellular reprogramming: a case study on budding yeast Saccharomyces cerevisiae
Shengchao Ding, Wei Wang
BMC Systems Biology , 2011, DOI: 10.1186/1752-0509-5-50
Abstract: We present here a systems biology approach that allows systematic search for effective reprogramming recipes and monitoring the reprogramming progress to uncover the underlying mechanisms. Using budding yeast as a model system, we have curated a genetic network regulating cell cycle and sporulation. Phenotypic consequences of perturbations can be predicted from the network without any prior knowledge, which makes it possible to computationally reprogram cell fate. As the heterogeneity of natural cells is important in many biological processes, we find that the extent of this heterogeneity restored by the reprogrammed cells varies significantly upon reprogramming recipes. The heterogeneity difference between the reprogrammed and natural cells may have functional consequences.Our study reveals that cellular reprogramming can be achieved by many different perturbations and the reprogrammability of a cell depends on the heterogeneity of the original cell state. We provide a general framework that can help discover new recipes for cellular reprogramming in human.In response to environmental or developmental signals, eukaryote cells normally transit to a specific state defined by the realization of its genetic network that specifies the gene expression and protein abundance levels. In the landscape of the cell state space, there exist attractors corresponding to different cell fates [1-4] and barriers between these attractors constrain cells to one attractor (one cell fate). Perturbations such as overexpression of a set of genes may push cells overcome the barriers and thus move from one attractor to another in the cell state space. An example is the generation of induced pluripotent stem cells (iPSCs) from differentiated somatic cells by overexpression of several genes [5-8]. A challenging problem is how to efficiently find effective, ideally the optimal, perturbations to reprogram a cell's fate. In addition, there are other unanswered questions such as how exactly cellu
Review on the study of entanglement in quantum computation speedup
ShengChao Ding,Zhi Jin
Chinese Science Bulletin , 2007, DOI: 10.1007/s11434-007-0324-8
Abstract: The role the quantum entanglement plays in quantum computation speedup has been widely disputed. Some believe that quantum computation’s speedup over classical computation is impossible if entanglement is absent, while others claim that the presence of entanglement is not a necessary condition for some quantum algorithms. This paper discusses this problem systematically. Simulating quantum computation with classical resources is analyzed and entanglement in known algorithms is reviewed. It is concluded that the presence of entanglement is a necessary but not sufficient condition in the pure state or pseudo-pure state quantum computation speedup. The case with the mixed state remains open. Further work on quantum computation will benefit from the presented results.
Novel algorithm to calculate hypervolume indicator of Pareto approximation set
Qing Yang,Shengchao Ding
Computer Science , 2007,
Abstract: Hypervolume indicator is a commonly accepted quality measure for comparing Pareto approximation set generated by multi-objective optimizers. The best known algorithm to calculate it for $n$ points in $d$-dimensional space has a run time of $O(n^{d/2})$ with special data structures. This paper presents a recursive, vertex-splitting algorithm for calculating the hypervolume indicator of a set of $n$ non-comparable points in $d>2$ dimensions. It splits out multiple child hyper-cuboids which can not be dominated by a splitting reference point. In special, the splitting reference point is carefully chosen to minimize the number of points in the child hyper-cuboids. The complexity analysis shows that the proposed algorithm achieves $O((\frac{d}{2})^n)$ time and $O(dn^2)$ space complexity in the worst case.
Community characteristics and interspecific association of the Songyang population of Isoetes sinensis
中华水韭松阳居群的群落结构与种间联结性研究

Shengchao Zhu,
朱圣潮

生物多样性 , 2006,
Abstract: 为全面了解国家一级保护植物中华水韭(Isoetessinensis)的濒危机制,作者对分布于浙江松阳的中华水韭居群的自然生境进行了野外观察,在1m×1m样方尺度上研究了中华水韭与群落中出现频率较高的27个物种之间的联结性。结果表明:群落中物种组成贫乏,其组成成分中温带性质明显,中华水韭在不同小群落中分布密度差异较大,在少数小群落中能形成优势种群。中华水韭与薄叶假耳草(Neanotishirsuta)、鳢肠(Ecliptaprostrata)、短尖苔草(Carexbrevicuspis)等7个种群的种间联结性极显著,与多数种群间联结性不显著;中华水韭与大多数种群的联结系数(AC)值在–0.4至0.4之间,即关联小,说明中华水韭在群落中的存在是相对独立的;仅少数小群落的优势种与中华水韭之间有种间竞争。中华水韭受生境和种间竞争影响较大,生态适应性差。此研究结果对制定该物种合适的就地保护措施和恢复计划具有参考价值。
Poverty, Parental Ill Health and Children’s Access to Schooling in Rural Gansu, China
Emily Hannum,Tanja Sargent,Shengchao Yu
Provincial China , 2009,
Abstract: As reforms to China's health care system have raised costs to users in recent decades, studies suggest that ill health has become intimately tied to social stratification as both a precipitant and a consequence of poverty. The problem may be particularly pronounced in China’s poorest rural populations. Focusing on Gansu Province, one of China’s poorest, this paper investigates the possibility that the ill health of adults also carries cross-generational consequences, through interfering with the education of children. Analyzing a survey of children in 100 rural villages, we find that parental illness is experienced disproportionately by the most economically vulnerable children. Moreover, parental illness can be linked to children’s educational access and experience in several ways. Children with an ill father are less likely to be enrolled than others; prior parental ill health is associated with lower household educational spending; and ill parents are more likely to report borrowing for their children’s education. Children with ill mothers are more likely to be absent and to work longer in the household. Children with ill mothers perform more poorly in math, and those with ill mothers and ill fathers are more likely to work for wages, on average, but these effects are accounted for by the deeper impoverishment of households with ill parents, compared to other households. Results suggest that ill health may have a ‘spillover’ effect on the long-term educational (and thus economic) prospects of the next generation. A change in this situation depends heavily on the success of new government initiatives to reduce health care and education cost burdens on the poor.
Evolving Quantum Oracles with Hybrid Quantum-inspired Evolutionary Algorithm
Shengchao Ding,Zhi Jin,Qing Yang
Physics , 2006,
Abstract: Quantum oracles play key roles in the studies of quantum computation and quantum information. But implementing quantum oracles efficiently with universal quantum gates is a hard work. Motivated by genetic programming, this paper proposes a novel approach to evolve quantum oracles with a hybrid quantum-inspired evolutionary algorithm. The approach codes quantum circuits with numerical values and combines the cost and correctness of quantum circuits into the fitness function. To speed up the calculation of matrix multiplication in the evaluation of individuals, a fast algorithm of matrix multiplication with Kronecker product is also presented. The experiments show the validity and the effects of some parameters of the presented approach. And some characteristics of the novel approach are discussed too.
An Experiment About Parallel Circuit And The Lorentz Forces On Wires
Audrey Yueru Li,Shengchao Alfred Li
Physics , 2015,
Abstract: Parallel circuit and the Lorentz forces on current carrying wires are important concepts in introductory physics courses. Here we describe an experiment that illustrates these two concepts. We mount a circuit with multiple grounding points onto a torsion balance. We show that the grounding points create parallel return paths for the supply current. When the topology or the shapes of the return paths are altered, the Lorentz forces exerted by the currents in the return paths within a magnetic field change accordingly, which in turn cause changes in the rotary displacement of the torsion balance. This experiment is simple and can be easily reproduced in a teaching laboratory. What makes it interesting to students is that recently two research teams have attempted to detect thrusts from microwave driven asymmetrical resonance cavities (EmDrive or Cannae Drive), and the phenomenon observable in this experiment provides an alternative explanation to the thrusts they detected.
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