Combined generation of power and heat offers great economic advantage and serves the requirements of environmental conservation. However, the operation of such integrated cogeneration systems is a complex problem beca...
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(纸本)0879426209
Combined generation of power and heat offers great economic advantage and serves the requirements of environmental conservation. However, the operation of such integrated cogeneration systems is a complex problem because the demand for power and for heat must be satisfied simultaneously with regard to many different constraints. The development of an advanced procedure for short-term operational planning in cogeneration systems based on the method of mixed-integerlinearprogramming completed by some supporting measures for problem reduction is reported. Test results for sample systems derived from actual cogeneration systems indicate the procedure's ability to calculate optimal economic schedules under realistic conditions.
The new Army warfighting doctrine, AirLand Operations, is designed for the army of the 90s, a smaller army, but one which will be faced with global responsibilities. These responsibilities will range from fighting war...
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The new Army warfighting doctrine, AirLand Operations, is designed for the army of the 90s, a smaller army, but one which will be faced with global responsibilities. These responsibilities will range from fighting wars and regional conflicts, to conducting various peacetime operations in support of allies in the realm of Low Intensity Conflict. Our success under AirLand Operations will largely depend upon the ability of the Field Artillery to disrupt enemy C3 elements, and destroy troop formations from extended ranges early in the battle. The Artillery School (USAFAS) is currently developing several advanced systems to accomplish this mission. The focus of this thesis is the Artillery Attack Model (AAM). The AAM is a GAMS mixed integer linear programming model developed to assist USAFAS determine the Minimum Cost Weapon/Munition Mix and Allocation of Fires to targets in order to meet the commander's kill criteria on the future battlefield.
The authors propose a new algorithm for layout compaction by modifying the topology of a given layout. Different from most compaction algorithms which move the components of a layout, this algorithm compacts a layout ...
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The authors propose a new algorithm for layout compaction by modifying the topology of a given layout. Different from most compaction algorithms which move the components of a layout, this algorithm compacts a layout by changing the orientations of transistors. A set of operations including moving, adding, deleting, shrinking, extending, etc., can work on the wires to rebuild and compact the layout after rotating a transistor. The simulated annealing technique is adopted in the authors' algorithm to find a near optimal solution.< >
An important consideration in the design of the communication network or a transportation network is the degree to which connectivity between given pairs of nodes is vulnerable to the failure or destruction of other l...
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An important consideration in the design of the communication network or a transportation network is the degree to which connectivity between given pairs of nodes is vulnerable to the failure or destruction of other links of the *** introduction of redundancy in the network wiil increase its survivabtity, but at the same time increase the cost of construction. This leads to the problem of designing a minimum cost network to meet specific redundancy requirements.
A systematic technique is introduced for designing multiplier-free FIR (finite impulse response) filters. This technique is based on the use of identical copies of the same subfilter which are interconnected with the ...
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A systematic technique is introduced for designing multiplier-free FIR (finite impulse response) filters. This technique is based on the use of identical copies of the same subfilter which are interconnected with the aid of a few additional adders and tap coefficients. In the proposed approach, the additional tap coefficients are first quantized in a systematic way to values which are simple combinations of powers-of-two. The second step is then to design the subfilter in such a way that its coefficients have similar simple representation forms. This can be done without time-consuming optimization since the ripple values and the allowable quantization errors for the subfilter are huge compared to those of the overall filter. Even direct rounding can be used to arrive at the desired result.< >
Combined generation of power and heat offers great economic advantage and serves the requirements of environmental conservation. However, the operation of such integrated cogeneration systems is a complex problem beca...
详细信息
Combined generation of power and heat offers great economic advantage and serves the requirements of environmental conservation. However, the operation of such integrated cogeneration systems is a complex problem because the demand for power and for heat must be satisfied simultaneously with regard to many different constraints. The development of an advanced procedure for short-term operational planning in cogeneration systems based on the method of mixed-integerlinearprogramming completed by some supporting measures for problem reduction is reported. Test results for sample systems derived from actual cogeneration systems indicate the procedure's ability to calculate optimal economic schedules under realistic conditions.< >
Time delays are an inherent characteristic of many multivariable processes. Their presence imposes limitations in the closed loop response. Their effects have been quantified by dynamic operability measures known as u...
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Time delays are an inherent characteristic of many multivariable processes. Their presence imposes limitations in the closed loop response. Their effects have been quantified by dynamic operability measures known as upper bounds (unachievable) and lower bounds (achievable). It is demonstrated that the detrimental effects of time delays can be minimized if the process is modified so that certain delays are increased. The approach is formulated as an optimization problem. It is demonstrated with example proplems that the modified process features improved dynamic operability.
An efficient adaptive design procedure referred to as the ACQ (adaptive coefficient quantization) technique is proposed for the design of FIR (finite impulse response) filters with power-of-two coefficients. The appro...
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An efficient adaptive design procedure referred to as the ACQ (adaptive coefficient quantization) technique is proposed for the design of FIR (finite impulse response) filters with power-of-two coefficients. The approach is based on the discrete distribution analysis of powers-of-two numbers and the use of a simple random search algorithm. Almost the same results have been obtained for several examples as with the existing, more complicated methods. Novel VLSI hardware structures both for single-processor and multiprocessor implementations similar to systolic arrays are discussed.< >
A design algorithm for finite-impulse response (FIR) filters with powers-of-two coefficients (2PFIR filters) is presented. The algorithm enables the design of 2PFIR filters with sharp cutoff. The 2PFIR filters are att...
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A design algorithm for finite-impulse response (FIR) filters with powers-of-two coefficients (2PFIR filters) is presented. The algorithm enables the design of 2PFIR filters with sharp cutoff. The 2PFIR filters are attractive for high-speed operation and simplification of hardware. However, the optimal or suboptimal design of 2PFIR filters with sharp cutoff have been difficult in the minimax sense. The algorithm proposed is composed of two methods. The first is suboptimal design, which preserves a proportional relation between the coefficients of the conventional FIR filters and the 2PFIR filters. This method is referred to as the proportional relation-preserve (PRP) method. The second is the application of the simple symmetric-sharpening (SSS) method. The SSS method is applied when the PRP method cannot realize the given filter specifications. Using the PRP and SSS methods, the 2PFIR with filter length N>200 can be easily designed.< >
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