论中国古代建筑空间机能的完善对家具设计的影响

中国古代构架式建筑空间的发展对古典家具的演变成长起着极为重要的影响作用,其建筑空间高度的转变直接影响了古典家具的形体从低到高的变化,一些新颖的家具形态的创造在很大程度上受到建筑空间里不严密的结构因素的影响,同时建筑内外空间成熟发展也促进了家具功能的逐步完善。

巨型城市与巨型城市区域的空间结构演变

从目前巨型城市发展趋势入手,探讨其发展背景及空间演变的动力机制,结合世界巨型城市研究进展,分析、探讨巨型城市空间结构演变的规律.认为巨型城市与巨型城市区域空间结构演变主要由3个方面构成:一是反极化思维,构建等级异质多中心城市体系;二是实现组团空间和机能空间的有效融合;三是实行交通网络和生态网络的耦合.初步建立生态导向的合理城市空间结构.

Development of space end-effector with capabilities of misalignment tolerance and soft capture based on tendon-sheath transmission system

The essential requirements of the end-effector of large space manipulator are capabilities of misalignment tolerance and soft capture.According to these requirements,an end-effector prototype combining the tendon-sheath transmission system with steel cable snaring mechanism was manufactured.An analysis method based on the coordinate transformation and the projection of key points of the mechanical interface was proposed,and it was a guideline of the end-effector design.Furthermore,the tendon-sheath transmission system was employed in the capture subassembly to reduce the inertia of the capture mechanism and enlarge the capture space.The capabilities of misalignment tolerance and soft capture were validated through the dynamic simulation in ADAMS software.The results of the capture simulation and experiment show that the end-effector has outstanding capabilities of misalignment tolerance and soft capture.The translation misalignments in radial directions are±100 mm,and angular misalignments about pitch and yaw are±15°.

Perturbation to Noether-Lie Symmetry and Adiabatic Invariants for Mechanical Systems in Phase Space

Based on the concept of adiabatic invariant,the perturbation to Noether-Lie symmetry and adiabatic invariants for mechanical systems in phase space are studied.The criterion of the Noether-Lie symmetry for the perturbed system is given,and the definition of the perturbation to Noether-Lie symmetry for the system under the action of small disturbance is presented.Meanwhile,the Noether adiabatic invariants and the generalized Hojman adiabatic invariants of the perturbed system are obtained.

Architectural Planning Living with Robotics

This paper seeks to envision future architectural planning as it relates to living with robots and to clarify the research theme for it. Living with robots is no longer a fantasy seen just on TV or in movies. The concept of the intelligent space emerged from the field of robotics in the mid-1990s. The idea of the intelligent space is that the robot will support the architecture and users of the space by keeping in close contact with architectural space equipped with intelligent technologies. The benefit of the intelligent space is that the robot can be smaller and less intelligent because the robot will be assisted by advanced technologies embedded in the architectural space, such as sensors and actuators. Therefore, the robot can consequently assist user＇s activities with delicate care. This paper describes the vision and possibility for architectural planning as it relates to live with robots who can support the inhabitants＇ lives. This paper introduces the study of the relationship between humans and moving robot in architectural space, especially support region for humans by desktop mobile robot.

Experiment research on mechanical behavior of the aluminum laminate in the low-high temperature

Aluminum laminate is one kind of the rigidizable composite materials and plays an important role in construction of the inflatable space structure(ISS),which has potential application in space in the future.But the study of the predecessors mainly focuses on the research of the mechanical behavior in the room temperature,for this reason,mechanical properties of the aluminum laminate in low-high temperature have been studied in this paper.The failure mechanism of the aluminum laminate is also analyzed in the microscopic view by JCXA-T33 electron probe.The results show uhat the temperature has significant influence on the strength and Young's modulus of the aluminum laminate.With the increase of temperature,both the strength and Young's modulus of the aluminum laminate decrease.A model between Young's modulus of the aluminum laminate and temperatures is obtained by using Arrhenius equation.The predicted values by the model agree well with the experiment values.

Global optimization of manipulator base placement by means of rapidly-exploring random tree

Due to the interrelationship between the base placement of the manipulator and its operation object,it is significant to analyze the accessibility and workspace of manipulators for the optimization of their base location.A new method is presented to optimize the base placement of manipulators through motion planning optimization and location optimization in the feasible area for manipulators.Firstly,research problems and contents are outlined.And then the feasible area for the manipulator base installation is discussed.Next,index depended on the joint movements and used to evaluate the kinematic performance of manipulators is defined.Although the mentioned indices in last section are regarded as the cost function of the latter,rapidly-exploring random tree(RRT) and rapidly-exploring random tree*(RRT*) algorithms are analyzed.And then,the proposed optimization method of manipulator base placement is studied by means of simulation research based on kinematic performance criteria.Finally,the conclusions could be proved effective from the simulation results.

Force Requirement for Stump Lifting

In cutting areas, soil preparation is occasionally necessary before reforestation. The aim of this action is a spatial planning that enables to perform further operations without problems. The removal, collection and transportation of stumps from the soil are part of this action. Issues related to climate change and the shortcoming of fossil energy sources call attention to increase the rate of renewable energy sources. Using the stumps removed from the soil as fuel is a significant resource within the biomass potential. For lifting a stump together with its roots, a grab mounted on a shovel is generally used. The utilisation of the lifted stumps for energy purposes increased worldwide, especially in the Scandinavian countries. In order to rationalise this operation, analyses of stump lifting time have been carried out. Results of some Hungarian experiments are presented below. The authors tested a machine mounting one grab for stump lifting on three tree types （Scots pine, robinia and poplar） and found functions correlating stump extraction force and stump diameter, which can be used in order to choose the right machine and determine the cost of the operation.

Study on Co-siting of Wind Farm and PV Station

After years of booming growth on renewable energy, the untapped land suitable for the wind farm becomes increasingly scarce in China. In order to make full use of the land, it became a realistic practice to construct wind farm together with PV station in those areas where both the wind resource and solar resource are rich. In this paper, based on the analysis of spatial distribution characteristics of wind and solar resources, the factors influencing on the layout of wind turbine and PV array and the interaction between wind turbine and PV array, a proposal for co-siting design wind farm and PV station is discussed.

Quantitative measurement of the mechanical properties of human antibodies with sub-lO-nm resolution in a liquid environment

The nanomechanical properties of single human immunoglobulin G and M antibodies were measured in a liquid environment using a fast force-volume technique with sub-10-nm spatial resolution. The ultrastructural details of these molecules were resolved in the images. Simultaneously, important physical properties, including elasticity, adhesion, and deformation were measured. The dimensions and adsorption of the immunoglobulin M antibodies onto the substrate indicated that they are highly by a low elastic stiffness （34 ± 10 MPa） flexible. The antibodies were characterized and high deformability （1.5 ± 0.5 nm）.

Dual functional transparent film for proximity and pressure sensing

Over the past few years, the rapid development of tactile sensing technology has contributed significantly to the realization of intuitional touch control and intelligent human-machine interaction. Apart from physical touch or pressure sensing, proximity sensing as a complementary function can extend the detection mode of common single functional tactile sensors. In this work, we present a transparent, matrix-structure dual functional capacitive sensor which integrates the capability of proximity and pressure sensing in one device, and the excellent spatial resolution offered by the isolated response of capacitive pixels enables us to realize precise location identification of approaching objects and loaded pressure with fast response, high stability and high reversibility.