Treesearch

Regression equations were developed for estimating the total cost of road construction in the central Appalachian region. Estimators include methods for predicting total costs for roads constructed using hourly rental methods and roads built on a total-job bid basis. Results show that total-job bid roads cost up to five times as much as roads built than when equipment is rented hourly. The estimates presented are for well-drained, stone-surfaced, permanent, minimum- to high-standard roads.

Imports from foreign furniture manufacturers are on ,the rise, and American manufacturers must take advantage of recent technological advances to regain their lost market share. To facilitate the implementation of these technologies for improving productivity and quality, a graphic model of the wood furniture production process is presented using the IDEF modeling process. Description explains the data that flows and the activities that occur in the plant, and their interaction. By analyzing the model, communication may be improved, specific points for implementing new technologies may...

An observation technique that incorporates Godified, stratified sampling was used to estimate in-stream recreation use in the White River Drainage in Vermont. Results were reported by season, day of week, time of day, kind of activity, and portion of stream. Summer had the highest use followed by spring and fall. Except in fall, weekends and holidays received substantially more recreation use than weekdays. Midmorning and early afternoon had the greatest use. Fishing was the predominant use in the spring, while swimming was the single most popular activity in summer. The main stem received...

Describes the data collection methods and the format of the new West Virginia yellow-poplar lumber defect database that was developed for use with computer simulation programs. The database contains descriptions of 627 boards, totaling approximately 3,800 board. feet, collected in West Virginia in grades FAS, FASlF, No. 1 Common, No. 2A Common, and No. 2B Common. The database includes a complete description of each board and each defect on the boards in a format that is readily acceptable for use with different simulation programs.

A recreation experience is not static, it varies over the course of an engagement. Yet, most recreation research operationalizes recreation benefits andoutcomes as essentially static in nature (i.e., satisfaction). "Experience patterns" capture the dynamic nature of a recreation experience and thus might prove useful as units of analysis in the management and study of recreation resources. The purpose of this exploratory study is to examine properties of experience patterns to determine whether they are worthy of future theoretical and empirical study. Toward this end, the experience...

This study was designed to investigate the impact of actual experience on experience preference. Experience preference measurements were taken before and after a hiking experience. A shift between pre-activity and post-activity experience preference judgments was hypothesized due to the effect of psychological adjustment to reduce dissonance between pre-activity experience preference and the actual experience. Subjects were divided into two groups based upon whether or not they achieved a given experience during their onsite activity. The application of dissonance theory suggested that...

Native crystals of Bacillus thuringiensis var. san diego, a coleopteran-specific δ-endotoxin, were metabolically labeled with [35S]methionine. Specific activity was 82,000 CPM/μg (2.44 Ci/mmol). Using a universal buffer formulated with the same ionic strength at every pH, we determined that native crystals dissolve above pH 10 and below pH 4. At the acidic pH, the rate of solubilization was substantially slower than at the alkaline pH. Recrystallization rates for the toxin were similar regardless of solubilization conditions. The banding patterns in denatured polyacrylamide gel electrophore...

Describes the purpose and function of the SILVAH computer program in general terms; provides detailed instructions on use of the program; and provides information on program organization , data formats, and the basis of processing algorithms.