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Search Results: 1 - 10 of 47043 matches for " Jing Zhu "
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Principle and Characteristic of Lorentz Force Propeller  [PDF]
Jing ZHU
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2009, DOI: 10.4236/jemaa.2009.14034
Abstract: This paper analyzes two methods that a magnetic field can be generated, and classifies them under two types: 1) Self-field: a magnetic field can be generated by electrically charged particles move, and its characteristic is that it can’t be independent of the electrically charged particles. 2) Radiation field: a magnetic field can be generated by electric field change, and its characteristic is that it independently exists. Lorentz Force Propeller (ab. LFP) utilize the characteristic that radiation magnetic field independently exists. The carrier of the moving electrically charged parti-cles and the device generating the changing electric field are fixed together to form a system. When the moving electrically charged particles under the action of the Lorentz force in the radiation magnetic field, the system achieves propulsion. Same as rocket engine, the LFP achieves propulsion in vacuum. LFP can generate propulsive force only by electric energy and no propellant is required. The main disadvantage of LFP is that the ratio of propulsive force to weight is small.
Towards a Categorical Framework for Verifying Design and Implementation of Concurrent Systems  [PDF]
Ming Zhu, Jing Li
Journal of Computer and Communications (JCC) , 2018, DOI: 10.4236/jcc.2018.611022
Abstract: Process-oriented design and implementation of concurrent systems has important benefits. However, the inherent complexity of concurrent processes’ communication imposes challenges such as verifying consistency between the process-oriented design and implementation of a concurrent system. To deal with such a challenge, we use Galois connections, Failures and Category Theory to construct a formal framework for designing, implementing, analyzing and verifying consistency of concurrent systems. For the purpose of illustrating the framework, a running concurrent system is designed by Communicating Sequential Processes, implemented by a process-oriented programming language Erasmus.
Using Category Theory to Explore and Model Label Event Structures  [PDF]
Ming Zhu, Jing Li
Journal of Computer and Communications (JCC) , 2019, DOI: 10.4236/jcc.2019.71005
Abstract: The development of a concurrent system poses unique challenges, especially those related to correctness and consistency, as such a system usually involves several interactive processes executing simultaneously. To deal with some of these challenges, we resorted to Labeled Event Structures (LES) and category theory as the formal methods to model concurrent systems. Specifically, in this paper, we proposed an idea to define categories and corresponding constructs, such as product and sum, to model events and relationships among events represented by LES. To explain the idea, several examples are developed. Though a mathematical proof, the proposed idea helped to build a correct-by-construction approach for formalizing LES models of concurrent systems.
Pancreaticoduodenectomy for Pancreatic Metastases of Malignant Fibrous Histiocytoma  [PDF]
Jing Zhu, Huihua Cai, Donglin Sun
Surgical Science (SS) , 2013, DOI: 10.4236/ss.2013.411098

Unlike primary pancreatic carcinoma, metastases to the pancreas are rare and their resection may be performed as a palliative treatment due to poorly defined outcome. We herein present an extremely rare case of pancreatic metastases of malignant fibrous histiocytoma (MFH) undergoing pancreaticoduodenectomy with tumor-free survival within postoperative 35-month follow-up. Pancreatic resection for metastatic MFH to the pancreas should be considered in selected patients. Long-term survival or good palliation may be achieved.

Representation of Categorical Specification of Self-Configurations in Reactive Autonomic Systems Framework  [PDF]
Ming Zhu, Heng Kuang, Jing Li
Journal of Computer and Communications (JCC) , 2018, DOI: 10.4236/jcc.2018.612003
Abstract: Software complexity crisis brings huge obstacle to further progress in IT industry. To alleviate this problem, researchers are asked to build systems which can benefit from automation. With autonomic behavior, the real-time reactive systems can be more self-managed and adaptive to their environment. However, most of current formal approaches fail to specify such kind of system. In this paper, we proposed an approach to formally specify reactive autonomic systems. First, we used category theory to formalize reactive autonomic systems; then we focused on the categorization of self-configurations and work flows of reactive autonomic systems, and finally we used XML to specify the categorical models. In doing so, it can help to build the foundation of reactive autonomic systems with autonomic features and verify emergent behaviors.
The Change of Heterosexual Preference in Adolescents: Implications of Stress and Cognitive Regulation on Sexual Orientation  [PDF]
Binggen Zhu, Xiaodan Ren, Jing Cao, Yujie Wu, Rongshen Zhu
Open Journal of Social Sciences (JSS) , 2013, DOI: 10.4236/jss.2013.16004
Abstract: Sexual orientation is a complex area. It is unclear to date how people precisely establish their preferred sexual objects. This paper presents two cases, whose heterosexual preference were changed in late adolescent age after a severe psychological event, to draw attention to the study of the possible underlying mechanism. Case 1, one identical male twin, was seriously punished at age 12 years, as he loved a girl in his classroom. Afterwards, he feared to contact with girls, and became attracted to young men at age 17 years, and kept same-sex sexual behaviors since then. However, his twin brother is always heterosexual. Case 2, a girl at age 16 years, was unexpectedly betrayed by her boyfriend, she bore great pain and distress in the beginning. Since then, she had a definite opinion that men were unbelievable, and gradually turned her heterosexual preference and had same-sex sexual behaviors with a girl classmate more than 3 years. Our case presentation indicates that severe frustration of primary heterosexual desires or behaviors and the successive cognitive regulation might lead susceptible adolescents into reorienting their sexual preference. The role of prefrontal cortex and related neuromodulatory pathways were discussed.
On some tests-based projection pursuit for elliptical symmetry of a high-dimensional distribution
Ping Jing,Lixing Zhu
Chinese Science Bulletin , 1998, DOI: 10.1007/BF02883806
Abstract: Some test statistics of Kolmogorov type and Cramér-von Mises type based on projection pursuit technique are proposed for the testing problem of sphericity of a high-dimensional distribution. The limiting distributions of the test statistics are derived under the null hypothesis and under any fixed alternative. The asymptotic properties of bootstrap approximation are investigated. Furthermore, for computational reasons, an approximation for the statistics, based on the number theoretic method, is suggested.
Ping Jing,Lixing Zhu
Chinese Science Bulletin , 1998, DOI: 10.1007/BF02884627
Exploration on Family Education Factors of Mentally Retarded Children
Jing-jun ZHU
Cross-Cultural Communication , 2008, DOI: 10.3968/704
Abstract: Mental retardation is not only a defect of life, but a manifestation of multi-life of human beings as well. Educational problems of mental retarded children reflect the situation of protecting for our children’s rights. Mentally retarded children’s education, firstly, is family education. If parents of mentally retarded children use rational and scientific methods to build favorable family education atmosphere, it will be of great benefit for the grow-up of mentally retarded children. Key words: Mentally Retarded Rehabilitation, Family Education, Scientific Methods Résumé: L’handicapé mental est un défaut de la vie, mais aussi un témoignage de la diversité de la vie. L’éducation des enfants mentalement déficients reflète l’état de la protection des droits des enfants dans notre pays. L’éducation familiale est la première éducation qu’ils re oivent. Une bonne atmosphère d’éducation familiale créée par leurs parent avec des méthodes rationnelles et scientifiques est favorable pour leur développement. Mots-clés: rétablissement, éducation familiale, méthodes scientifiques 摘要:智障是生命的缺陷,也是人類生命多元化的表現。智障兒童的教育問題體現我國兒童權益保護的狀況。智障兒童教育首先是家庭教育,智障兒童家長用理性和科學方法營造良好的家庭教育氛圍,有利於智障兒童成長。 關鍵詞:智障康復;家庭教育;科學方法
Exploration of Social Work on Disaster Relief and Reconstruction
Jing-jun ZHU
Cross-Cultural Communication , 2008, DOI: 10.3968/734
Abstract: The impact of disaster on human beings is tremendous. With the advent of disaster, individuals or family members will suffer life-threatening, property loss, organization breakdown, community relationship disintegration and Psychological trauma. Disaster relief provides an opportunity to social work. Through personal experiences on social work services provided in Sichuan disaster areas, this paper discusses social work theory, methods and goals on disaster relief. Key words: Disaster Relief; Community Reconstruction; Social Work Résumé: L'impact de la catastrophe sur l'être humain est énorme. Avec l'avènement de la catastrophe, des individus ou des membres de la famille subissent le danger pour la vie, la perte de biens, la décomposition des organisations, la désintégration des relations communautaires et les traumatismes psychologiques. Le secours en cas de catastrophe offre une occasion de travail social. Grace à des expériences personnelles sur les services sociaux fournis dans les zones sinistrées du Sichuan, cet article traite de la théorie du travail social, les méthodes et les objectifs de secours en cas de catastrophe. Mots-clés: secours en cas; de catastrophe; reconstruction communautaire; travail social 摘 要:災難對人類的影響巨大,在災難來臨之際人類個人或者家庭成員的生命受到威脅,財產遭受損失,組織 破碎社區關係解體,生態環境被破壞,造成心理創傷等等。災害救助為社會工作提供了契機。本文通過筆者在四 川災區社會工作服務的親身經歷,探討災難救助中社會工作理論、方法和目標。 關鍵詞:災難救助;災區重建;社會工作
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