旅顺新市街近代建筑形态解析

作为大连市历史文化街区之一,旅顺新市街有着丰厚的近代建筑遗存。本文以现场调研和理论研究为基础,从历史背景出发,对旅顺新市街近代建筑的总体风貌、特色进行了归纳。同时,参照当时世界近代建筑形式构成法则的传承与变迁,对新市街近代建筑的形态及其构成法则进行剖析,并归纳、提炼其形态特征,梳理、探寻其演化特点及其缘由。以期发掘其价值内涵,并为相关研究以及历史街区的更新提供参考依据。     

新疆历史村落的空间特色保护与传承——以哈密博斯坦村为例

新疆的气候条件、地形地貌、绿洲分布、水资源及当地建材等,对聚落选址、空间布局、建筑形式及建筑构造等产生了重要的影响,从而形成了新疆地区特有的、适应当地自然环境的营建技艺和聚落空间形态.对这些营建技艺与空间形态进行分析,揭示其中隐藏的规律性,对新疆地区聚落遗产的保护及新农村建设的开展具有重要的现实意义.     

Smart concept design based on recessive inheritance in complex electromechanical system

Due to the substantial increase in users demand, the scale of complex electromechanical systems is rapidly enlarging when systems are rapidly merging, and the complexity of the system has been greatly increased. Even if the original system is running well, singular phenomena often occurs in the process of complex electromechanical systems integration, which leads to the failure of the functional requirements of the new generation of products. In the face of the singular phenomena of complex electromechanical systems, traditional solutions focus more on solving the problems existing in the current complex electromechanical systems, and do not deeply study the root causes of the singular phenomena in the design process of complex electromechanical systems. The singular phenomena of system has high concealment and is not easy to be detected at the design stage, and similar singular phenomena will appear repeatedly in multiple generations of the same product. These characteristics are very similar to the characteristics of recessive inheritance of biological systems. Therefore, the paper will compare complex electromechanical systems with biological systems, and propose a recessive inheritance mechanism of complex electromechanical systems that can be used in smart concept design by introducing the recessive inheritance mechanism of biological system into the complex electromechanical system design process. First, use function trimming to build a functional gene for new complex electromechanical systems. Second, combine the Length and Time dimension chart (L-T chart) and Computer Aided Innovation (CAI) to find the recessive parameters that may exist in the design of the new generation system and analyze the possible coupling phenomena between the recessive parameters. Then, using the Invention Problem Solving Theory (TRIZ) tools to solve the coupling relationship between recessive parameters to reduce the possibility of singular phenomena in the new generation system, forming a new generation of complex electromechanical system smart concept design theory framework. Finally, for the design example of the new generation of energy-saving surface platform, the proposed method is used to determine the design scheme, establish a 3D model and verify the feasibility and scientificity of the theory by Ansys analysis.     

Unification of the models for types, classes and state machines

The static model, specified formally, and the dynamic model, represented by hierarchical state machines, are intimately related. By defining a mapping between the two, we are able to provide a definition of inheritance, multiple inheritance and behavioral subtyping for state machines based on that for formally specified types and classes, and provide a graphical representation for formal specifications in terms of state machines. The state machine notation is based on statecharts. It, however, supports both a declarative style, appropriate for types, and an imperative style, appropriate for classes. State machines may be parameterized and may be viewed from different perspectives, based on an arbitrary choice of state predicates. And states are interpreted not as an expression of concurrency, but result from a choice of independent state predicates.     

Inheritance rules for flexible model retrieval

Convenient model management requires flexible model retrieval. This paper presents a new flexible retrieval approach for mathematical model bases. The approach defines a multi-valued model inheritance relationship among models at a signature level. The inheritance provides a rich semantic information for the retrieval mechanism to refine inexact retrieval requirements. An inheritance rules reasoning system is proposed to enhance the ability and the efficiency of the model retrieval. The interface of the approach includes an SQL-like command, which enables users to retrieve their required models with inexact requirement expressions. The approach has been implemented in a rule-based mathematical model base system RMMBS. Application examples demonstrate the retrieval approach.     

小麦异源细胞质遗传特点的研究

本文以普通小麦中国春细胞核置换到小麦属和山羊草属不同细胞质的同核异质稳定置换系,以及普通小麦不同品种的细胞核置换到卵圆山羊草细胞质的同质异核稳定置换系为材料,研究了异源细胞质在生育期、剑叶光合特性、电导率、花粉育性及主要农艺性状等方面的遗传特点,分析了异源细胞质遗传效应的差异性和稳定性,讨论了核质杂种的核质互作关系以及异源细胞质的遗传机制,并指出了小麦异源细胞质遗传效应的应用前景.     

城市建筑环境展望

城市环境质量是评价两个文明的重要标准之一。建筑环境历来视为是建筑的有机组成部分,在规划与设计中作为统一的整体而考虑。由于城市性质、人际交往、总体观念和自然保护等,城市出现了时代的变革。因为没有重视,城市里出现了环境的污染。本文对以下问题作了分析:城市扩建、改建和发展中出现的历史变动;文化承传表现的城市个性;借助自然和绿化改善城市环境的情调;建筑环境对视角、规模的限定;建筑环境面临的时代超越。     

新疆新构造运动基本特征初步探讨

新疆新构造运动极其强烈，而且有其自己的基本特征．本文对新疆新构造运动的继承性、新生性、阶段性及间歇性、差异断块升降运动显著、水平运动强烈、地震活动频繁等基本特征作了初步探讨．     

25SiMnMoV钢闪光对焊接头的断裂韧度

本文采用三点弯曲侧切小试样测试了25SiMnMoV钢闪光焊接接头经淬火、回火后的断裂韧度。结果表明,过热区的断裂韧度最高,正火区次之,而焊缝最低,断裂韧度的高低与焊接区的原始组织状态,重新加热淬火过程中的组织遗传和相遗传等因素有关。