نتایج جستجو برای: macro micro elements
تعداد نتایج: 407538 فیلتر نتایج به سال:
When service sectors are a major driver for the growth of the world economy, we are challenged to implement service-oriented infrastructure as e-Gov platform to achieve further growth and innovation for both developed and developing countries. According to recent trends in service industry, it is clarified that main factors for the growth of service sectors are investment into knowledge, trade,...
Our objective in web security is to move black box to white box in enterprise practices. In this paper, we explain how our approaches achieve the goal in terms of static and dynamic analysis. To better explain the framework and roadmap of analysis work, we describe our approaches by using macro and micro views individually. Based on this foundation, we explore dynamic analysis in string validat...
We combine micro and macro unemployment duration data to study the e ects of the business cycle on the out ow from unemployment. We allow the cycle to a ect individual exit probabilities of unemployed workers as well as the composition of the total in ow into unemployment. We estimate the model using (micro) survey data and (macro) administrative data from France. The distribution of the in ow ...
In this paper, we present a neural network based control scheme for endeffector path tracking control of a system consisting of a rigid micro manipulator attached at the end of a flexible macro manipulator. The objective is to suppress vibrations in the macro manipulator and at the same time achieve desired motions of the end-effector of the micro manipulator. A two-layer feedforward neural net...
ABSTRACT Photonics is a field that straddles both the macro and micro worlds. It largely deals with macro-scale devices, but many of these require sub-micron-scale precision in assembly. This makes it a very interesting application domain. We describe a microgripper for microassembly of photonic devices and micro-exploration of the properties of sub-micron attachment means (such as solder and U...
Signi cant advances have been made in the area of macro planning for assembly operations (i.e., dividing a product into sub-assemblies, determining the sequence of assembly operations). On the contrary, the state of the art in micro planning (i.e., tool selection, path planning for tool and part movements) is rather primitive. To generate a realizable assembly plan, both macro planning and micr...
* Supported by the National Natural Science Foundation of China(No. 60305008 ) Abstract This paper proposes a new method for motion planning global optimization of a macro-micro manipulator (3M) system based on Estimation of Distribution Algorithm (EDA). Due to the redundant character of a 3M system, its motion planning is formulated as a multi-objective optimization problem under the mechanica...
This paper shows some results for the relative MIMO capacity (compared with a SISO system) with respect to the number of antennas, antenna orientation and distance. The MIMO capacity is extracted from the Geometrically Based Single Bounce Channel Model, where the channel is modelled by propagation in an environment composed of clusters of scatterers. The results are shown for the pico-, microan...
The combination of robots for macro and micro operations is necessary for performing a large number of technological operations where macro motions precede finishing high accuracy motions. The basic difference between the two manipulation systems (MS) is the type of actuations used. The present study offers algorithms for solving inverse problem of kinematics (IPK) related to a macro MS without...
We present a new general framework for designing multiscale methods. Compared with previous work such as Brandt’s systematic up-scaling, the heterogeneous multiscale method and the “equation-free” approach, this new framework has the distinct feature that it does not require reinitializing the microscale model at each macro time step or each macro iteration step. In the new strategy, the macroa...
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