Ecologists' Opportunity in Yellowstone's Blaze: The recent fires that spread through half of Yellowstone National Park offer insights into important ecological questions     

Lewin R 《Science (New York, N.Y.)》1988,241(4874):1762-1763

  相似文献   

The global carbon cycle     

Houghton RA 《Science (New York, N.Y.)》1988,241(4874):1737-1738

  相似文献   

Variance in academia: the academic profession     

Kerckhoff AC 《Science (New York, N.Y.)》1988,239(4842):922-923

  相似文献   

Samples of the solar system: meteorites and their parent planets     

Vickery AM 《Science (New York, N.Y.)》1988,239(4842):924-925

  相似文献   

Is the Greenhouse Here?: A global warming plus hints of other climatic changes are starting to build the case for an intensifying greenhouse, but can the case be proven in time?     

Kerr RA 《Science (New York, N.Y.)》1988,239(4840):559-561

  相似文献   

Calculus: Crisis Looms in Mathematics' Future: Researchers and educators are debating how calculus should best be taught to increasingly recalcitrant students     

Cipra BA 《Science (New York, N.Y.)》1988,239(4847):1491-1492

  相似文献   

Doubts over fermat proof     

Cipra BA 《Science (New York, N.Y.)》1988,239(4847):1481

  相似文献   

Organisms for study: observing marine invertebrates     

Strathmann RR 《Science (New York, N.Y.)》1988,239(4837):300

  相似文献   

Making pet foods          下载免费PDF全文

Brown RG 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(5):465-468

  相似文献   

An assessment of the utility of microcomputers and dairy herd management software for dairy farms and dairy practices   总被引：1，自引：1，他引：0       下载免费PDF全文

Menzies PI  Meek AH  Stahlbaum BW  Etherington WG 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(3):287-293

Microcomputer systems were placed in three veterinary practices each serving three farms (bureau), and onto nine dairy farms (on-farm). Over a twenty-four week period, the utilization of the computer system and the DHM software was monitored. The on-farm system was more costly in terms of equipment and technical support effort, but the information was utilized to a greater extent than it was by the bureau participants who had invested more user time per cow. Note that actual time will vary with the software program used. The farmers indicated that they wished to have access to the information offered by the software. `Computer phobia' was not found to be a problem. The expectations of the computer system and its benefits generally remained high. In general, the information available through the microcomputer system and the DHM software was found to be useful to both the dairy farmers and the veterinarians in this study.  相似文献