The major goals of this study were to: (1) assess whether low-frequency stimulation (LFS) is effective at inducing long-term depression (LTD) of the perforant path/dentate gyrus synapse in the anesthetized adult rat h...
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The major goals of this study were to: (1) assess whether low-frequency stimulation (LFS) is effective at inducing long-term depression (LTD) of the perforant path/dentate gyrus synapse in the anesthetized adult rat hippocampus, and (2) determine the frequency at which the shift from LTD to LTP occurs. Measures of homosynaptic LTD were recorded in the dentate gyrus during experiments conducted on anesthetized adult rats, Our results indicate that stimulation frequencies lower than or equal to 7 Hz resulted in the induction of LTD of both PSA and EPSP slope measures, with a shift to LTP occurring approximately between 11 and 30 Hz stimulation.
In spite of increasing infrastructure preservation and improvement needs, limited agency budgets, and public resistance to new construction, civil engineering education focuses almost exclusively on teaching students ...
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In spite of increasing infrastructure preservation and improvement needs, limited agency budgets, and public resistance to new construction, civil engineering education focuses almost exclusively on teaching students to design new facilities. Analytical ability and knowledge of design standards and approaches are necessary but not sufficient tools for managing civil infrastructure in the 21st century. Students must learn to integrate this traditional civil engineering knowledge base with an understanding of deterioration science, economics, finance, decision and management theory, maintenance management, and public policy. This paper describes efforts to address this gap in civil engineering education. The authors began with a single course at Carnegie Mellon University and have modified the original material in different ways to serve the needs at other institutions.
Under deregulation, the formation of electricity markets is a topic of great interest in the power industry and in financial institutions worldwide. Using derivative financial instruments (including options) becomes i...
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Under deregulation, the formation of electricity markets is a topic of great interest in the power industry and in financial institutions worldwide. Using derivative financial instruments (including options) becomes important for hedging against uncertainty and managing risk-limiting exposure to adverse market conditions. Black and Scholes' equation is often used to value options, but its validity is questionable due to assumptions that may not hold for electricity, most notably the assumption of log-normally distributed prices for the underlying commodity. In this research, a put options market for electricity is modeled. Adaptive agents trade in this market to maximize profit. They are not forced to use an explicit economic or financial model (e.g., Black-Scholes) in their valuation. A genetic algorithm (GA) is used to find alternate valuations that are used to generate buy and sell signals. The results show that it is possible to evolve profitable valuations for use with buying and selling options in this simple model. Reasons for and implications of this finding (e.g., that Black-Scholes may not be a good method for pricing electricity derivatives) are discussed.
In this paper,we describe a system for extracting the facial features required to reconstruct a 3D model of a face from a 2D *** facial image processing library comprises of 32 standard functions and 7 functions for t...
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In this paper,we describe a system for extracting the facial features required to reconstruct a 3D model of a face from a 2D *** facial image processing library comprises of 32 standard functions and 7 functions for the automatic facial contour extraction function.32 standard functions can be classified into five groups such as face detection,pupil detection, facial parts detection,facial parts contour extraction and face contour *** system is not only useful for the automatic 3D facial model fitting but also for a widespread facial image processing applications such as personal authentication and facial expression analysis.
We present a technique for analyzing a simulation metamodel that has been constructed using a variance-stabilizing transformation. To compute a valid confidence interval for the expected value of the original simulati...
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We present a technique for analyzing a simulation metamodel that has been constructed using a variance-stabilizing transformation. To compute a valid confidence interval for the expected value of the original simulation response at a selected factor-level combination (design point), we first compute the corresponding confidence interval for the transformed response at that factor-level combination and then untransform the endpoints of the resulting confidence interval. Taking the midpoint of the untransformed confidence interval as our point estimator of the expected simulation response at the selected factor-level combination and approximating the variance of this point estimator via the delta method, we formulate an approximate two-sample student t-test for validating our metamodel-based estimator versus the results of making independent runs of the simulation at the selected factor-level combination. We illustrate this technique in a case study involving the design of a manufacturing cell, and we compare our results with those of a more conventional approach to analyzing transformed-based simulation metamodels. A Monte Carlo performance evaluation shows that significantly better confidence-interval coverage is maintained with the proposed procedure over a wide range of values for the residual variance of the transformed metamodel.
In this paper, we extend the language we proposed in [11] to make it possible to program are-consistency algorithms. We also propose a hybrid algorithm that integrates the interval-consistency (IC) and arc-consistency...
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This paper presents a method for thread partitioning for a hardware compiler Bach. Bach synthesizes RT level circuits from a system description written in Bach-C language, where a system is modeled as communicating pr...
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This paper presents a method for thread partitioning for a hardware compiler Bach. Bach synthesizes RT level circuits from a system description written in Bach-C language, where a system is modeled as communicating processes running in parallel. The system description is decomposed into threads, i.e., strings of sequential processes, and then converted into synthesizable behavioral VHDL models. The proposed method attempts to find a partitioning of a given system description into threads that maximize resource sharing among processes in the threads. Experiments on two real designs show that the circuit sizes were reduced by 3.7% and 14.7%. We also show the detailed statistics and analysis of the size of the resulting gate level circuits.
In this paper,we present a remote programexecution mechanism with networktransparency which works even on a multi-platform *** network transparencyfacilities,our system supports file sharing,environment preservation a...
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In this paper,we present a remote programexecution mechanism with networktransparency which works even on a multi-platform *** network transparencyfacilities,our system supports file sharing,environment preservation and terminal ***,all messages between theirmachines are encrypted for secure ***,we have implemented a prototype systemfor UNIX and *** to thetest runs,we have confirmed the prototypesystem has network transparency actually and itsresponse time is small enough.
A case study conducted in a British company (Company A) on reengineering business processes is presented. It gives an example on how a case study ought to be written in order to go beyond the standard for writing an i...
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A case study conducted in a British company (Company A) on reengineering business processes is presented. It gives an example on how a case study ought to be written in order to go beyond the standard for writing an industrial report to one that is acceptable by academic peers. A good case study ought to contain information that readers can use in replicating the experiences gained and lessons learnt in future endeavours under similar settings. When a collection of good case studies is available to a practitioner or researcher he could formulate his plan for the future and avoid “re‐inventing the wheel”. This is most important to research in operations management because it lends a hand in the building up of a theory in POM to make an impact in its natural settings.
The authors describe the concept of Intelligent Trader and the network management architecture based on it. First, we describe problems in the modern network system, from the viewpoint of network management. Next, we ...
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The authors describe the concept of Intelligent Trader and the network management architecture based on it. First, we describe problems in the modern network system, from the viewpoint of network management. Next, we describe the similarity and difference between network management and application integration. Then we discuss the merits and problems of the application integration technique when applying it to network management. Finally, we propose the intelligent trader system which incorporates the application integration technique into the network management.
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