21世纪初江西水利发展战略思考

在总结“九五”期间江西省水利工作的基础上，全面分析了21世纪初江西水利面临的机遇和挑战，并提出了全小水利工作指导思想、总体目标和战略措施。     

深基坑复合土钉墙支护工程雨季施工技术

复合土钉墙作为深基坑的支护形式之一,在施工过程中不可避免地会面临雨季赶工的情况,正确地进行雨季施工,一方面解决了工程工期紧的难题,另一方面能够保证基坑边坡的稳定性,基于此,通过总结复合土钉墙在雨季施工过程中出现的质量问题,制定针对雨季施工的管理措施,可以保证基坑安全和顺利施工,并提供良好的经济效益。     

解析住宅类建筑在雨季施工的问题与技术措施

本文针对住宅类建筑雨季施工的概念、特点、准备工作以及技术措施进行详细的分析。     

先秦人类对黄土高原生存环境的选择与改造

以科学史观的视角和历史地理学的研究方法,归纳了黄土高原原始村落分布的地理特征,即:分布在原生黄土区,坐落于河谷台地上,缘水而居促进了文化交流;概括出原始聚落沿等高线和与等温线迁移以及与黄河流向相一致的规律;从沟渠与农田水利、土壤环境建设和水土保持措施三个方面阐述了原始居民对黄土高原生存环境的有益改造.研究认为,从原始居民对黄土高原生存环境的选择与改造的史实中,我们能够找到可资借鉴的思想与经验,那些尊重、顺应自然规律的传统观念对于现今环境建设仍有启示意义和借鉴价值.     

建筑工程雨期施工技术

雨期施工关系到建筑工程的质量和安全。文章介绍了雨期施工的气象知识、施工要求、施工准备、施工措施、安全措施等,以供同行参考。     

Short communication: Trends for monthly changes in days open in Holsteins

A reaction norm approach was used to estimate trends for days open (DO) with a model that indirectly accounted for heat stress. Data included 3.4 million first-parity records of DO of US Holsteins. A fixed effect model included herd-year, month of calving within region (MOC), age class, and regression on 305-d milk yield. An index calculated from the standardized solutions to MOC derived from the fixed effect model was treated as a proxy for an index on heat stress (SI). The lowest index for any region was set to zero. The highest index was 1.00 for the Southeast, 0.56 for the Northeast, 0.54 for the Midwest, 0.33 for the Northwest, and 0.42 for the Southwest. In all regions except the Northwest, the highest DO and the corresponding highest indices were in March-April. Compared with the fixed model, the reaction norm model also included the effect of an animal and a random regression on the SI; the 2 animal solutions are subsequently referred to as an intercept and a slope. Genetic trends were calculated for cows and sires separately. For cows, the trend for the intercept was −0.1 d/yr, whereas the trend for the slope was 1 d/yr. For sires, the same trends were −0.3 and 1.5, respectively. Official proofs were used to characterize the 100 top and 100 bottom bulls with at least 50 daughters for the intercept and the slope. Compared with the top bulls, the bottom bulls for the intercept gave 56 kg more milk and their type performance index was higher by 212 points. For the slope, the same numbers were −435 kg and −242 points, respectively. Trends for seasonal changes of days open are unfavorable.     

论HFC网中交互数据服务业务的传送

随着通信技术、计算机技术的迅猛发展，向用户提供视音频和数据服务业务，实现交互式全数字多媒体通信是技术发展的必然。以HFC信道和CM为主，论述DTV信道中交互数据服务业务的传送。     

长白山地区汛期降水对全球海表温度和海平面气压异常的响应

利用美国国家环境预报中心和国家大气研究中心(NCEP/NCAR)再分析海平面气压资料、美国国家海洋大气管理局(NOAA)重构的海表温度资料和中国国家气象信息中心整编的长白山地区20个气象站的降水资料,分析了长白山地区汛期降水年际和年代际波动对海表温度和海平面气压异常的滞后一个月的响应.结果表明:①年际波动对海表温度的响应并不明显,但年代际波动与西北太平洋海表温度显著正相关,与南印度洋和南大西洋海表温度显著负相关.②年际波动和年代际波动对海平面气压的响应都非常明显,但响应地区有差异,其中年际波动与南大西洋海     

对雨季道路施工的危害与防治的探讨

雨水对公路施工影响很大，轻则拖延工期，重则会给项目造成重大经济损失。通过总结雨水对公路施工造成的危害，从而针对性地提出预防措施以及工地受雨水影响后的整治措施，在保证工程质量的同时，降低工程成本，达到最大经济效益。