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岁月的年轮见证努力的印记,也蕴含未来的启示。过去的2012年,忙碌但充实着,匆忙却成长着。这一年,有很多新面孔走进我的生活,或喜或悲地留下痕迹;这一年,我走过很多地方,或深或浅地收获感悟。站在年轮更替的节点,回望过去,展望未来,"两个画面,一个词语"闪过了我的脑海,成为我2012年浓墨重彩的记忆。 相似文献
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Owen Tang 《Maritime Policy and Management》2013,40(5):541-542
The summer minimum extent of Arctic sea ice shrank drastically in these years, and the opportunity on Arctic international shipping emerged. The Northern Sea Route (NSR), formerly blocked by permanent ice, was completely ice-free in September in the past 3 years. Because this route is much shorter than conventional Asia–Europe shipping lane, many maritime countries have paid attention to exploit the enormous potential of the Arctic Ocean from economical consideration. This study measured the economical advantage of the seasonal NSR by calculating the shipping cost saved. 相似文献
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2013年,忙碌而又充实,辛苦而又快乐。我和我的团队--陈维工作室立足岗位、再创佳绩,获得了许多荣誉。 从第十六届“上海十大杰出青年”,到全国十大“特别关注最美青工”,再到第八届全国“人民满意的公务员”,正是有了大家强有力的支持,才让我一路走来信心满满! 相似文献
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Richard A. Walker 《Coastal management》2013,41(2):227-233
Note This article is a short response to a critique by William Odum and Stephen Skjei of an earlier article by this author in this Journal entitled “Wetlands Preservation and Management on Chesapeake Bay: The Role of Science in Natural Resource Policy.”; It is a continuation of themes begun in that paper. It focuses on the question of determining the social value of wetlands preservation and the contradictory positions which ecologists fall into when discussing the value of wetlands. 相似文献
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风龙 《舰载武器(含VCD光盘)》2014,(2):12-20
有诗颂蛇云:“由来禀龙质,灵化出山门。”2013癸已蛇年正足中国灵动如蛇、蜕变成长的一年。蛇年里中国在外交、政治、经济、军事、社会、文化等各领域作出了深刻而全面的调整,积极主动地解决内部问题和应对外部形势的变化。2013年是以习近平和李克强为首的中国新一代领导人执政后的第一个年份,中国的政策走向无疑是处于困顿中的当今世界所关注的焦点。 相似文献
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Matteo Diez Wei He Emilio F. Campana Frederick Stern 《Journal of Marine Science and Technology》2014,19(2):143-169
A framework for assessing convergence and validation of non-intrusive uncertainty quantification (UQ) methods is studied and applied to a complex industrial problem in ship design, namely the high-speed Delft Catamaran advancing in calm water, with variable Froude number and geometry. Relationship between UQ studies and deterministic verification and validation is discussed. Computations are performed using high- (URANS) and low- (potential flow) fidelity simulations. Froude number has expected value and standard deviation equal to 0.5 and 0.05, respectively, on a truncated normal distribution. Geometric uncertainty is related to the research space of a simulation-based design optimization, and assessed through the Karhunen–Loève expansion (KLE). Monte Carlo method with Latin hypercube sampling (MC-LHS) is used to compute expected value, standard deviation, distribution and uncertainty intervals for resistance, sinkage and trim. MC-LHS with CFD is used as a benchmark for validating less costly UQ methods, including MC-LHS with metamodels and standard quadrature formulas. Gaussian quadrature is found the most efficient method; however, MC-LHS with metamodels is preferred since provides with confidence intervals and distributions in a straightforward way and at reasonably small computational cost. UQ results are compared to earlier deterministic single- and multi-objective optimization; reduced-dimensional KLE studies for geometric variability indicate that stochastic optimization would not be of great benefit for the present problem. 相似文献
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We construct a first country-wide model of demand for road use and of road safety outcomes for Algeria making use of the DRAG-type framework and of flexible regression estimation methods that make a demonstrable difference to the quality of our results. We imply that the availability of high quality Algerian data could make it worthwhile not only to consider updates of the model with longer data series but also to study variants of the model, notably with disaggregation of freight activities across industrial sectors. 相似文献
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First40.7组.兵家必争
中国杯一直以来的代表船型为博纳多First407级,2013年的赛况与以往截然不同。改变是从2008年第二届中国杯帆船赛开始的,当年来自日本的船队夺得了冠军,这个头衔开始变得令人注目,之后“喜来登”以南非队伍身份, 相似文献
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日前,挪威DNB银行发布研究报告称,2013年大部分船型市场仍将继续低迷。面对这样的市场环境,哪一类船舶会成为低迷市场中的黑马?哪些船型有可能率先复苏呢?据了解,进入2013年,散货船市场似乎有了些许回暖迹象。大型散货船订单接连落地,这些订单包括外高桥造船获得来自2个欧洲船东的8艘新船订单(包括备选订单),以及来自Thenamaris公司的2+2艘18万载重吨级好望角型散货船订单;STX大连与 相似文献
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对国内航运公司来说,美国航线让人纠结,港口当局对船舶/船东或经营人的船舶/货物管理水平及应急响应速度是否令人满意,船员的业务能力是否适任相应航线,设备的维护保养状况及各相关报告、记录是否满足美国对安全、防污染的要求等,均令管理公司及船员心生畏惧但巨大的市场及更高的运价又让各船公司垂涎不已。同时,能够并敢于进入美国市场运营本身也是航运公司综合实力的体现。文中所有内容均建立在VGP2008版的比对基础上对美国新版vGP2013进行解读. 相似文献