The Fiber Optic Network design Expert System (FONDES) is an engineering tool for the specification, design, and evaluation of fiber optic transmission systems. FONDES encompasses a design rule base and a data base of ...
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Scientific Calculations, founded in 1963, is a supplier of software-based design automation products, i. e. , we write, market, and support computer programs. Our first series of products was and is for the design and...
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ISBN:
(纸本)089252801X
Scientific Calculations, founded in 1963, is a supplier of software-based design automation products, i. e. , we write, market, and support computer programs. Our first series of products was and is for the design and analysis of optical systems. Our current offering is ACCOS v(TRADEMARK), an acronym for Automatic Correction of Centered optical Systems version v. The restriction to centered optical systems was removed long ago. Through the sixties, the predecessors of ACCOS v(TRADEMARK) were both batch oriented codes. Work was begun on ACCOS v(TRADEMARK) in 1970 with the goal of developing a general purpose interactive code. Work continues today.
current research in the area of robotic control centers around task planning, trajectory planning, and trajectory tracking. While increasing the flexibility of these control subtasks is a task in itself, it is wise to...
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current research in the area of robotic control centers around task planning, trajectory planning, and trajectory tracking. While increasing the flexibility of these control subtasks is a task in itself, it is wise to keep in mind the overall control scheme, such that the increased flexibility is realizable. A robotic control hierarchy is proposed. The interdependance of the control modules, and the robot arm itself, are demonstrated. Several known control schemes are shown as subsets of this hierarchy. The capabilities of the higher levels of the control hierarchy are seen as being dependent on the lower levels. This suggests that the developments and refinement of separate modules will lead to an 'intelligent' robot controller design.
The proceedings contain 37 papers. The topics discussed include: thermochromic materials research for optical switching;some perspectives on electrochromic device research;current status of photovoltaic research at SE...
The proceedings contain 37 papers. The topics discussed include: thermochromic materials research for optical switching;some perspectives on electrochromic device research;current status of photovoltaic research at SERI;a model for light scattering by rough tin oxide;tin oxide antireflection coating for polycrystalline silicon solar cell;holographic solar concentrator;holographic lighting for energy efficient greenhouses;development of holographic notch filters and filter stacks for specific spectral transmission;designing for specific diffraction criteria by accounting for non-ideal aspects in holographic recording materials;design considerations for long-lived glass mirrors for space;and the effect of the size of structural bulk inhomogeneities on the specular transmittance of polymer films.
In this paper, we discuss the all-fiber approach to current sensing for high voltage applications. We present different sensors, based on the Faraday effect, which allow to perform measurements without any contact or ...
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In this paper, we discuss the all-fiber approach to current sensing for high voltage applications. We present different sensors, based on the Faraday effect, which allow to perform measurements without any contact or linkage between the fiber and the line. This is obtained by an accurate control of the bending birefringence in the sensing coil and by a proper design of its shape. Using a multimode laser diode and a polarization readout scheme,the typical sensitivity is 1A (rms), with a dynamic range up to three decades and a bandwidth of 10 KHz. These performances are adequate both for steady-state measurement and transient monitoring.
currentdevelopments in thermal imaging in the 8-12 micron waveband are towards improving spatial and radiometric resolution. However, they will not reduce the initial or whole life cost. To significantly reduce costs...
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currentdevelopments in thermal imaging in the 8-12 micron waveband are towards improving spatial and radiometric resolution. However, they will not reduce the initial or whole life cost. To significantly reduce costs the overall size must be reduced and significant savings made in three critical areas;detectors, cooling and optics. 3-5 micron quantum detection using a parallel or serial parallel scan is investigated which reduces cost in these areas by using inherently cheaper detectors with thermo electric cooling and low cost optics optimized for diamond machining using a reflecting single field of view telescope.
In this paper we report current research on a SYSTEMS MAP based on conceptual graph theory for representing the knowledge requirements of distributed operating systems. This knowledge-base has been used on an interact...
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A monolithic 128 x 128 InSb array is described for staring infrared imaging systems operating in the 3-5μm spectral region. The array is fabricated with only 4 mask levels and has almost 5 times higher responsivity a...
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作者：
Pasquale, JosephComputer Systems Research Group
Computer Science Division Department of Electrical Engineering and Computer Sciences University of California BerkeleyCA94720 United States
A major fundamental problem in decentralized resource control in distributed systems is that in general, no decision-making node knows with complete certainty the current global state of the system. We present an arch...
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Stray light analysis has matured in the last ten years into a set of well understood disciplines, some of which are: the measurement and use of scatter data;baffle design;diffraction, system design, and system level a...
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ISBN:
(纸本)0892527102
Stray light analysis has matured in the last ten years into a set of well understood disciplines, some of which are: the measurement and use of scatter data;baffle design;diffraction, system design, and system level analysis, to mention the most significant. System test results, both on the ground and in space, have confirmed the ability of the software analysis to make accurate predictions. The data base on the scattering characteristics of materials has swelled tremendously. The number of facilities making such measurements has also greatly increased. There are still some soft spots in certain areas of technology. Scatter measurements in the vacuum Uv and far IR are still very scant.
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