this paper introduces the implementation of asynchronous pipelined circuits in MOS Current-Mode logic (MCML). C-element and double-edge-triggered flip-flop are implemented in MCML and used in so-called micropipeline c...
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Modern digital circuits consist of logic gates implemented in the complementary metal oxide semiconductor (CMOS) technology. the time taken for a logic gate output to change after one or more inputs have changed is ca...
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Modern digital circuits consist of logic gates implemented in the complementary metal oxide semiconductor (CMOS) technology. the time taken for a logic gate output to change after one or more inputs have changed is called the delay of the gate. A conventional CMOS gate is designed to have the same input to output delay irrespective of which input caused the output to change. We propose a new gate design that has different delays along various inputs to output paths within the gate. this is accomplished by inserting selectively sized "permanently on" series transistors at the inputs of the logic gate. We demonstrate the use of the variable input delay CMOS gates for a totally glitch-free minimum dynamic power implementation of a digital circuit. Applying a previously described linear programming method to the c7552 benchmark circuit, we obtained a power saving of 58% over an un-optimized design. this power consumption was 18% lower than that for an alternative low power design using conventional CMOS gates. All circuits had the same overall delay. Since the overall delay was not allowed to increase, the glitch elimination with conventional gates required insertion of delay buffers on non-critical paths. the use of the variable input delay gates drastically reduced the required number of delay buffers.
To assess the extent to which individuals adapt themeselfs in a strange cultural environement, the authors analyzed the adaptation process of a number of immigrants who live in Greece. Using categorical variables to r...
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To operate energy supply systems optimally from the viewpoints of energy and cost savings, it is important to predict energy demands accurately as basic conditions. Several methods of predicting energy demands have be...
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ISBN:
(纸本)8251920418
To operate energy supply systems optimally from the viewpoints of energy and cost savings, it is important to predict energy demands accurately as basic conditions. Several methods of predicting energy demands have been proposed, and one of them is to use multi-layered neural network models. Although gradient methods have conventionally been adopted in the back propagation procedure to identify the values of model parameters, they have the significant drawback that they can derive only local optimal solutions. In this paper, a global optimization method named ''Modal Trimming Method" for nonlinear programming problems is adopted in the back propagation procedure to derive global quasi-optimal solutions. the multi-layered neural network model is applied to the prediction of the cooling demand in a building used for a bench mark test of a variety of prediction methods, and its validity and effectiveness are clarified.
the main obstacles of the aqua-ammonia vapour-absorption refrigeration (VAR) systems for getting the market acceptance are their higher investment cost and lower first law efficiency when driven by high exergy input. ...
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ISBN:
(纸本)8251920418
the main obstacles of the aqua-ammonia vapour-absorption refrigeration (VAR) systems for getting the market acceptance are their higher investment cost and lower first law efficiency when driven by high exergy input. In this paper, the thermoeconomic concept is applied to the optimization of an aqua-ammonia VAR system-aimed at minimizing its overall product cost. thermoeconomic concept based simplified cost minimization methodology calculates the economic costs of all the internal flows and products of the system by formulating thermoeconomic cost balances. the system is then thermoeconomically evaluated to identify the effects of design variables on costs and thereby enables to suggest values of design variables that would make the overall system cost-effective. Finally, the optimization of the system is carried out using evolutionary programming. the optimized result shows that the performance of the system can be improved significantly without any additional capital investment.
In motion simulations, video games and animation films, lots of interactions between characters and virtual environments are needed. Even though realistic motion data can be derived from MoCap system, motion editing a...
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In motion simulations, video games and animation films, lots of interactions between characters and virtual environments are needed. Even though realistic motion data can be derived from MoCap system, motion editing and synthesis, animators must adapt these motion data to specific virtual environment manually, which is a boring and time-consuming job. Here we propose a framework to program the movements of characters and generate navigation animations in virtual environment. Given a virtual environment, a visual user interface is provided for animators to interactively generate motion scripts, describing the characters' movements in this scene and finally used to retrieve motion clips from MoCap database and generate navigation animations automatically. this framework also provides flexible mechanism for animators to get varied resulting animations by configurable table of motion bias coefficients and interactive visual user interface. Copyright (c) 2005 John Wiley & Sons, Ltd.
Conventional temporal logics like CTL [1], used for specifying properties of digital systems are not well suited for property specification of analog systems. We present a new temporal logic for specifying properties ...
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the proceedings contain 79 papers. the topics discussed include: design of a bistable compliant locking mechanism for new generation mirror actuators;a novel design of a brushless DC motor integrated with an embedded ...
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ISBN:
(纸本)0791847411
the proceedings contain 79 papers. the topics discussed include: design of a bistable compliant locking mechanism for new generation mirror actuators;a novel design of a brushless DC motor integrated with an embedded planetary gear train;a runtime support environment for mobile agents;digitally controlled optimal self-calibration for a laser-photodiode array based vehicle detection system;a scheduling algorithm of time-triggered period tasks for distributed embedded system;distributed modeling and framework for collaborative embedded system design;an embedded system to be applied to neural network predictive control in an electric arc furnace;and model-driven programmable logic controller design and FPGA-based hardware.
the ACL2 system la based upon a first-order logic and implements traditional first-order reasoning techniques, notably (conditional) rewriting, as well as extensions including mathematical induction and a "functi...
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To get maximum energy efficiency from adiabatic logic circuits several charge-recovery power clock generators (PCGs) have been published in recent years. this paper compares and analyzes the performance and energy eff...
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To get maximum energy efficiency from adiabatic logic circuits several charge-recovery power clock generators (PCGs) have been published in recent years. this paper compares and analyzes the performance and energy efficiency of various PCGs in a uniform test environment. the test benches are laid out in a standard 0.18 /spl mu/m CMOS technology and the results are mainly based on post layout simulations.
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