伏尔加—卡马梯级水库调度方式的变动对航运条件的影响

在国民经济蓬勃发展条件下,自然资源(包括水资源)多部门的综合利用是极其重要的。在伏尔加河流域水资源有限的情况下,正是通过这一途径满足国民经济部门和居民用水量日益增长的需求。     

家乐福:为全球零售商上课

家乐福集团在中国开设的大型超市就像零售业中的一个"海峡"--从东方和从西方卷来的大浪交织在一起:东方--在超市一边的货架上,可以看到大量鲜活的鱼、虾、牛蛙甚至甲鱼;西方--在另一边不远的冷藏柜里,又能看到真空包装的烟熏咸肉和意大利腊肠.这个来自法国的超级零售商运用现代的模式,结合当地人的口味,在中国经营着他们的零售帝国.     

China’s Labor Market on Crossroad

I.IntroductionSincethelate1990s,China’slabor market has comeundergreat pressure,asreflected by anincreasing unemployment rate,and adeclining labor force participation rate.The causesofthe severe unemployment are threefold.First,due to the macro-economic downturn andrapid industrial structural change in the late1990s,state-owned enterprises(SOEs),whichlost their comparative advantage and competitiveness,have been unable to fully utilizetheir production capacity,and have become loss-makers.Se…     

Should Chinese Local Governments Be Allowed to Issue Bonds?

I.IntroductionDespite China’s impressive economic growth,its fiscal sustainability has increasinglybecome one of the most watched risk indicators facing the economy.Although China’sexplicit national debtto GDP ratio israther manageable by theOECD standard,at about20 percent of GDP,given its small share of tax revenue to GDP,currently at18.5percent ofGDP,this fiscalsystem may stumble upon major challenges in themedium to long term ifChina’slargecontingent fiscal liabilitiesare als…     

马上男儿的选股秘诀

郝特韦经常练习一种特殊的双人骑马运动,这需要他和他的骏马,以及另一个人---通常情况下是他的儿子马克斯---共同练习。在这项比赛中,两名参赛者需要轮流骑马竞速。对于他投资的股票,62岁的郝特韦喜欢这样打趣:“有些在飞驰,有些还在小跑。”可是,就是这样的投资组合近10年来为郝特韦基金带来了年均16.2%的高收益率,比标准普尔500指数高出整整4.7个百分点。他评估股票的主要方法便是自由现金流法。经营性现金流减去资本支出,所剩下的余额就是自由现金。私有公司的老板更关注自由现金而非净利润,因为自由现金能给他们更大的余地,来安排资本用…     

库列伊水电站右坝段结构与施工工艺的改进

在复杂的工程地质条件下,包括在粘性软土基础上,已建了很多土坝。正如苏联等国的工程经验所表明的,当设计这类建筑物时,应规定专门的措施进行监测和控制边坡的稳定。这种监测任务(包括利用仪器对建筑物进行原型观测),乃是用工程方法获得的地质和工程地质资料的订正及补充。这些资料在建坝初期,可从勘测资料的坝基地质模型,及在土壤施工性质计算中验证其准确性,或使之进一步准确。欲控制土坝边坡的稳定,必须进行土坝     

闸下出流量估算

垂直闸门的闸下出流,只要闸门开度a比上、下游水位H_0、H_1小的情况下,可假定其出流量与通过矩形孔口的出流量相同。     

INTERACTION OF VORTICES WITH A PROGRESSIVE SURFACE WAVE

ＩＮＴＥＲＡＣＴＩＯＮＯＦＶＯＲＴＩＣＥＳＷＩＴＨＡＰＲＯＧＲＥＳＳＩＶＥＳＵＲＦＡＣＥＷＡＶＥＷａｎｇＬｉｎ－ｌｉｎ；ＭａＨｕｔ－ｙａｎｇ（ＧｒａｄｕａｔｅＳｃｕｄｏｆＡｃａｄｅｍｉｃａＳｉｎｉｃａＢｅｉｊｉｎｇ１０００３９Ｐ．Ｒ．Ｃｈｉｎａ）Ａｂ...     

ON THE CALCULATION OF FLOW OVER AND THROUGH A ROCK-FILL DAM

1.INTRODUCTIONInthedesignofanovertoppedrock--filldam,oneofthemajortasksistodecidethesizeofthedownstreamprotection.Theovertoppedrock--filldamismadeofporousmedia,thereforethewaterwillpenetrateintothedamfromtheupperfaceandemergeoutofitfromthelowerpart,whileitflowsoverthedam.Hence,theprotectionissubjectedtotheactionofboththeoverflowandtheseepageflow,andneitherofthemcanbenegligible.Inthiscase,theflowfieldconsistsoftwoparts:theopenflowandtheseepageflow,whichhavedifferentproperties.Infact,forthe…     

Urban development patterns in Indonesia

The author examines recent urban development in Indonesia. "Analysis of urban developments in Indonesia has been hampered in the past by weak data. Recently, the National Urban Development Strategy (NUDS) project has generated a set of improved data. This paper aims at elaborating and supplementing the NUDS study. After a discussion of definitional problems, an analysis is carried out of urban growth rates at the provincial level. Private investment is shown to be a principal determinant of urban growth rates. Other significant determinants are rural immigration and the present level of urbanisation. Private investment is shown to be strongly biased towards provinces with large urban areas. In addition, polarisation is studied at the level of individual cities. It is found that a period of rapidly increasing polarisation has come to an end during the last decade."