No abstract

The purpose of this research was to verify that various segments of the rock climbing community have different attitudes toward resource management and to aid in the understanding of attitudinal differences that can affect rock-climbing management. Respondents were given an on-site questionnaire; 400 usable surveys were collected from 13 different locations in the United States. Respondents identified themselves according to the type of climbing they participated in (e.g., traditional climbing, sport climbing, and hybrid climbing). Factor analysis identified five usable factors: bolt placement/use, need for management, reservations about management, appropriateness of bolts, and climbers' self-perception. A repeated-measures analysis of variance identified significant differences among responses from traditional and sport climbers on four of the five scales used to measures attitudes. The variance among the climbing subgroups indicated that various climbing groups had significantly different attitudes toward management. All climbers surveyed had reservations about the management process. Results from the analysis indicated that climbers from all three groups (traditional, sport, and hybrid) felt that managers did not adequately understand the activity of climbing, climbers did not adequately understand the management process, climbing was not treated fairly in the management process in comparison to other activities, and climbing was micromanaged.

Case studies of “boom towns” in the western United States and the theory of social disorganization predict positive effects of recent growth and energy development on the violent crime rate in small towns and rural areas. Regression results, with controls for local characteristics prior to the energy boom of the 1970s, give little evidence of additive effects of recent growth and energy development on the violent crime rate in nonmetropolitan counties of the major energy-producing states. Long-standing structural problems are better predictors of the violent crime rate than are recent changes associated with energy development.

\Ve analyzed the UNIX 4.2 BSD file system by recording activity in trace files and writing programs to analyze the traces. The trace analysis shows that the average file system bandwidth needed per user is low (a few hundred bytes per second). Most of the files accessed are short, are open a short time, and are accessed sequentiall y. Most new informatio n is deleted or overwritten within a few minutes of its creation. We wrote a simulator that uses the traces to predict the performanc e of caches for disk blocks. The moderates ized caches used in UNIX reduce disk traffic by about 50%, but larger Ca.('hes (seYCral megabytes) can achieve much greater reductions, eliminating 90S(or more of all disk traffic. 'With those large caches, large block size5 (16 kbytes or more) re'3ult in the fewest disk accesses.

Abstract--Although numerous, small, manganese oxide deposits associated with dolomite in the Eastern Transvaal escarpment, Republic of South Africa, have been known for many years, their mineralogical make-up is somewhat controversial. Chemical, mineralogical, and morphological properties of the weathering products of dolomite and the coexisting manganese oxide material in the Graskop area were therefore determined. Mn and Fe occur only in minor accessory minerals in the original rock; however, in the weathering residue, these elements are concentrated and occur as separate mineral phases, chiefly birnessite, nsutite, and goethite. Thin veins of pure muscovite and quartz traverse the residua. Rare, pure calcite and maghemite nodules were noted throughout the residual manganese material. The properties of this weathering sequence suggest that the manganese wad deposits were formed in situ as a result of the congruent dissolution of dolomite, leaving a porous, sponge-like structure, highly enriched in Mn and Fe oxides.