基于DS1624的多点温度监测系统

为了减少温度变化对高精度时间比对的影响,设计了一种由带存储功能的数字温度计DS1624构建的、基于I2C总线的温度监测系统,并给出了系统的构成及软件、硬件实现方法和详细实验结果。分析表明,以温度监测系统为关键部分的温度控制系统是高精度时间比对所必要的。     

我省非法买卖农村集体土地现状及处理对策

非法买卖农村集体土地是指以牟利为目的,违反土地管理法律法规的规定,将集体土地的权利完全或部分、永久或在一定期限内转移给他人的行为,主要包括违反土地管理法律法规出租、出让、出售、交换等各种形式的转让集体土地使用权的行为。近年来,我省各地随着经济的快速发展、建设用地供需矛盾的凸现、土地价值快速攀升,非法买卖集体土地的行为在一些地方时有发生并屡禁不止,且表现形式日趋隐蔽,不易察觉,造成耕地破坏、部     

成都市经济总量及产业结构研究

主要通过内部比较、横向比较、纵向比较对成都市经济总量、经济运行质量、三次产业占GDP比重、三次" 产业从业人员比重等问题进行了分析研究,对成都市经济总量及产业结构有了大致了解,找到了制约成都市经济总量增长的主要因素.在此基础上,再考虑国家政策导向及成都市现行具体政策等提出了优化投资结构.优化财政及金融政策,加强人才队伍建设等几条促进成都市产业结构调整及加快经济总量增长的建议.     

善待地球科学发展--寄语第35个世界地球日

一年一度的“世界地球日”来到了,国土资源部确定今年的纪念活动主题是“善待地球———科学发展”,期望通过开展系列宣传活动,树立和落实以人为本,全面、协调、可持续发展观,促进人与自然的和谐。众所周知,地球的资源是有限的,地球-生命-人类系统的平衡与物质的生产和调节能力     

难忘的合影

在我的相册里，珍藏着一张与几个陌生人的合影，每次看见，我都会思绪万千，想起今年春天在海南的一幕幕。     

Impacts of Climatic Factors on Runoff Coefficients in Source Regions of the Huanghe River

Runoff coefficients of the source regions of the Huanghe River in 1956–2000 were analyzed in this paper. In the 1990s runoff of Tangnaihai Hydrologic Station of the Huanghe River experienced a serious decrease, which had at- tracted considerable attention. Climate changes have important impact on the water resources availability. From the view of water cycling, runoff coefficients are important indexes of water resources in a particular catchment. Kalinin baseflow separation technique was improved based on the characteristics of precipitation and streamflow. After the separation of runoff coefficient (R/P), baseflow coefficient (Br/P) and direct runoff coefficient (Dr/P) were estimated. Statistic analyses were applied to assessing the impact of precipitation and temperature on runoff coefficients (including Dr/P, Br/P and R/P). The results show that in the source regions of the Huanghe River, mean annual baseflow coefficient was higher than mean annual direct runoff coefficient. Annual runoff coefficients were in direct proportion to annual pre- cipitation and in inverse proportion to annual mean temperature. The decrease of runoff coefficients in the 1990s was closely related to the decrease in precipitation and increase in temperature in the same period. Over different sub-basins of the source regions of the Huanghe River, runoff coefficients responded differently to precipitation and temperature. In the area above Jimai Hydrologic Station where annual mean temperature is –3.9oC, temperature is the main factor in- fluencing the runoff coefficients. Runoff coefficients were in inverse relation to temperature, and precipitation had nearly no impact on runoff coefficients. In subbasin between Jimai and Maqu Hydrologic Station Dr/P was mainly affected by precipitation while R/P and Br/P were both significantly influenced by precipitation and temperature. In the area be-tween Maqu and Tangnaihai hydrologic stations all the three runoff coefficients increased with the rising of annual precipitation, while direct runoff coefficient was inversely proportional to temperature. In the source regions of the Huanghe River with the increase of average annual temperature, the impacts of temperature on runoff coefficients be-come insignificant.     

后门检测系统的Win32应用程序设计与实现

介绍了后门检测系统的设计,以及各模块实现拟采用的方案,包括:网卡数据包的截获,进程和端口号的映射,截获包的解码与分析和数据库设计等.     

镜头里的荷影墨韵

看起来是很平常的东西，可是当你用美的眼光去欣赏它的时候，它就真的美了。所以我觉得人就是应该多看美的东西。多从美的方面看，这样就不会有烦恼。     

泥石流的运动规律分锨防治建议——以湘南白岭沟泥石流为例

文章以湖南省南部白岭沟泥石流灾害为例，对其运动规律进行了计算分析，提出了有针对性的综合治理措施，对历史上没有观测资料的泥石流灾害的治理具有一定的指导意义。     

廊固凹陷近岸水下扇特征及控制因素

通过对廊固凹陷18口井541 m岩心的系统观察、156口井测井序列的建立、1km×1 km三维地震测网密度的地震相识别,分析了该沉积体系的相带展布特征。该砂砾岩层总体趋势为向上厚度减薄、层数减少,共识别出5期扇体,多呈条带状沿大兴断层断面分布,每期之间发育稳定的暗色泥岩段。该近岸水下扇的形成受3级层序、大兴断层、古构造、古气候、古地形以及物源供给等多种因素的控制。3级层序的发育特点、大兴断层的分段活动以及特殊的物源供给背景因素的匹配对近岸水下扇形成起到决定性作用。2~3期扇体扇中分布范围广,储集条件好,是凹陷下一步开发工作的有利目标。