scholarly journals Notes on the state-of-the art of benefit-cost analysis as related to transportation systems

1966 ◽  
Author(s):  
Joseph D Crumlish
Keyword(s):  
Cost Analysis ◽  
State Of The Art ◽  
Transportation Systems ◽  
The State ◽  
Benefit Cost Analysis ◽  
Benefit Cost

scholarly journals An Effective Cache Algorithm for Heterogeneous Storage Systems

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Yong Li ◽  
Dan Feng ◽  
Zhan Shi
Keyword(s):  
Cost Analysis ◽  
State Of The Art ◽  
Storage Systems ◽  
Performance Degradation ◽  
Performance Characteristics ◽  
Storage Devices ◽  
Benefit Cost Analysis ◽  
Wide Range ◽  
Benefit Cost ◽  
Cache Block

Modern storage environment is commonly composed of heterogeneous storage devices. However, traditional cache algorithms exhibit performance degradation in heterogeneous storage systems because they were not designed to work with the diverse performance characteristics. In this paper, we present a new cache algorithm called HCM for heterogeneous storage systems. The HCM algorithm partitions the cache among the disks and adopts an effective scheme to balance the work across the disks. Furthermore, it applies benefit-cost analysis to choose the best allocation of cache block to improve the performance. Conducting simulations with a variety of traces and a wide range of cache size, our experiments show that HCM significantly outperforms the existing state-of-the-art storage-aware cache algorithms.

Benefit-Cost Analysis of Residential and Outpatient Addiction Treatment in the State of Washington

2000 ◽  
Vol 24 (6) ◽  
pp. 609-634 ◽  
Author(s):  
Michael T. French ◽  
Helena J. Salomé ◽  
Antoinette Krupski ◽  
James R. Mckay ◽  
Dennis M. Donovan ◽  
...  
Keyword(s):  
Cost Analysis ◽  
Addiction Treatment ◽  
The State ◽  
Benefit Cost Analysis ◽  
Benefit Cost

Applying Benefit/Cost Analysis To Identify and Measure the Benefits of Intelligent Transportation Systems

1998 ◽  
Vol 1651 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Daniel Brand
Keyword(s):  
Data Collection ◽  
Customer Satisfaction ◽  
Cost Analysis ◽  
Intelligent Transportation Systems ◽  
Stated Preference ◽  
Intelligent Transportation ◽  
Transportation Systems ◽  
Benefit Cost Analysis ◽  
Benefit Cost ◽  
Model Chain

The guidance provided by benefit/cost analysis (BCA) is used to identify the measures appropriate for assessing the benefits of intelligent transportation systems (ITS) investments using BCA. Proper recognition of how ITS differs from conventional transportation improvements can avoid expensive data collection, serious underestimates of the benefits of ITS, and mistakes in our planning and investment policies. The steps in BCA are described, including its strict rules governing the inclusion of benefit measures. An ITS causal model chain is presented that links the five traditional ITS goals (efficiency, mobility, safety, productivity, and energy/environment). The model chain varies from the conventional planning model because the ITS mobility and productivity benefit measures do not vary directly with its safety, energy, and environmental impacts. Recommendations are given for avoiding double counting ITS mobility and productivity benefits, and for identifying them correctly. Errors in valuing the mobility benefit using observed data on travel and ITS product and service buying behavior are described, as is the potential for serious underestimates of ITS mobility benefits from using observed or predicted travel time savings as the primary mobility benefit measure. Instead, direct measurement and valuation of the ITS mobility benefit using customer satisfaction (stated preference) survey methods avoid the problems of ( a) how exactly to measure the utility-generating features of ITS user benefits, and ( b) observing the behavioral responses to ITS information, which involve expensive data collection. Measuring customer satisfaction directly can also simplify other areas of ITS evaluation, including avoiding traditional transportation modeling in some instances.

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