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A New Uniform-based Resource Constrained Total Project float Measure （U-RCTPF）

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Management Studies 2014年第8期2卷 533-540页

作者： Roni Levi Research & Engineering Haifa Israel

Resource scheduling has become one of the most important activities in project management research and practice in the last decades. Recently, as part of this development, formal tools and techniques were developed to tackle the more complex problem of resource allocation or scheduling; that is, making sure both time constraints and resource constraints are met. In project scheduling, the concept of float and criticality plays a central role, however, the recent literature does not offer a general and useful measure for criticality （flexibility） in resource constrained projects. The resource constrained project total float measure （RCTPF） is defined as the sum of the total floats of activities, where the total float for an activity is defined as the difference of its latest and earliest start times. The RCTPF calculates the total float of each activity in order to maximize the total float of the project. However, not only the existence of float or its amount is important, but in many cases the distribution of the total amount of the float within the activities is even more significant. The following paper presents an extended measure to the existing RCTPF measure to solve this problem. The new measure, uniform-based resource constrained total project float measure （U-RCTPF）, is geared toward the uniform distribution of the project total float among the various project activities. The scheduling objective is to minimize the variation of the float among the activities. In this approach, a resource-constrained project is characterized by its best schedule, where best means a schedule in which the RCTPF is maximal and the uniformly measure is minimal.

关键词： project management scheduling resource allocation resource constraint float flexibility

基于CSS+DIV的float技术在网页制作中的应用

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软件工程师 2015年第5期 24-26页

作者：郭巧丽曹宏举大连东软信息学院计算机科学与技术系辽宁大连116023 大连外国语大学软件学院辽宁大连116044

本文主要描述基于CSS+DIV的float技术在文本环绕、页面布局和页面导航中的应用,对设置浮动元素产生的影响采用clear进行清除处理。float技术不但对整个页面布局进行规划,也可以对一些基本元素如导航等进行排列,是网页制作中非常重要的... 详细信息

本文主要描述基于CSS+DIV的float技术在文本环绕、页面布局和页面导航中的应用,对设置浮动元素产生的影响采用clear进行清除处理。float技术不但对整个页面布局进行规划,也可以对一些基本元素如导航等进行排列,是网页制作中非常重要的方法。

关键词： CSS+DIV float clear

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float悬浮床

新潮电子 2008年第10期 241-241页

如果要问你曾睡过最舒服的床是哪张，恐怕有不少人都会选择孩童时期的摇篮吧！那时的世界里没有烦恼，每晚还有妈妈的”摇篮曲”伴着入眠。也许那时还未曾记事，但那温馨的感觉一定会在你的潜意识里深藏。时间不会倒流，我们自然不能“... 详细信息

如果要问你曾睡过最舒服的床是哪张，恐怕有不少人都会选择孩童时期的摇篮吧！那时的世界里没有烦恼，每晚还有妈妈的”摇篮曲”伴着入眠。也许那时还未曾记事，但那温馨的感觉一定会在你的潜意识里深藏。时间不会倒流，我们自然不能“返老还童”，但是选择一张如“摇篮”般惬意的床还是能够做到的——float便是你最好的选择。

关键词： float 悬浮床框架木材

floating Type Ocean Wave Power Station Equipped with Hydroelectric Unit

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Journal of Thermal Science 2013年第5期22卷 467-471页

作者： Shun Okamoto Toshiaki Kanemoto Toshihiko Umekage Kyushu Institute of Technology Sensui 1-1 Tobata Kitakyushu 804-8550 Japan

The authors have invented the unique ocean wave power station,which is composed of the floating type platform with a pair of the floats lining up at the interval of one wave pitch and the counter-rotating type wave power unit,its runners are submerged in the seawater at the middle position of the *** profiles make the flow velocity at the runner is twice faster than that of the traditional fixed/caisson type OWC,on the ideal flow ***,the runners counter-rotate the inner and the outer armatures of the peculiar generator,respectively,and the relative rotational speed is also twice faster than the speed of the single runner/*** characteristics make the runner diameter large,namely the output higher,as requested,because the torque of the power unit never act on the floating type *** the preliminary reseach,this paper verifies to get the power using a Wells type single runner installed in the model *** runner takes the output which is affected by the oscillating amplitude of the platform,the rotational speed and the inertia force of the runner,etc.

关键词： Renewable energy Ocean wave float Platform Counter-rotation Power unit

Meso-scale circulation at the intermediate-depth east of Mindanao observed by Argo profiling floats

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Science China Earth Sciences 2010年第3期53卷 432-440页

作者： ZHOU Hui1, YUAN DongLiang1, GUO PeiFang2, SHI MaoChong2 & ZHANG QiLong 1 Key Laboratory of Ocean Circulation and Wave Studies, Chinese Academy of Sciences, Qingdao 266071, China 2 Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China Key Laboratory of Ocean Circulation and Wave Studies Chinese Academy of Sciences Qingdao China Physical Oceanography Laboratory Ocean University of China Qingdao China

The meso-scale circulation at the intermediate depth east of Mindanao is studied using Argo profiling floats observations. The trajectories and the parking-depth velocities of Argo floats show that the intermediate-depth circulation east of Mindanao contains significant meso-scale features that are highly variable both in space and in time. Both cyclonic and anticyclonic eddies at the intermediate depth (1000–2000 m) are indicated by the trajectories east of Mindanao. The mean tangential velocities of these eddies are about 10 cm/s at 2000 m and over 20 cm/s at 1000 m, which indicates that the geostrophic calculation may contain large errors due to the vigorous eddy activity at the reference levels. The analyses also suggest that these eddies might play an important role in mass and vorticity balances of the intermediate-depth circulation east of Mindanao.

关键词： Mindanao Current intermediate-depth circulation meso-scale eddy Argo profiling float

Underwater survival:Calcium signaling keeps plants afloat

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Molecular Plant 2023年第6期16卷 971-972页

作者： Daai Zhang Francesco Licausi Department of Biology University of OxfordSouth Park RoadOxford OX13RBUK

Plant submergence is a composite stress where hypoxia plays a critical *** inhibits growth and threatens survival by limiting ATP production via oxidative *** in ambient oxygen availability impacts especially those tissues characterized by high metabolic demand or barriers to gas diffusion(Xie et al.,2021).Adaptation to hypoxia involves metabolic and anatomic reprogramming,which are largely controlled by ERFVll transcription factors.

关键词： float programming ambient

Pioneering Proposal of floating Type Ocean Wave Power Station

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Journal of Energy and Power Engineering 2013年第4期7卷 633-638页

作者： Shun Okamoto Toshiaki Kanemoto Graduate School of Engineering Kyushu Institute of Technology Kitakyushu 804-8550 Japan Faculty of Engineering Kyushu Institute of Technology Kitakyushu 804-8550 Japan

This serial research develops the unique ocean wave power station, which is composed of the floating type platform with a pair of the floats arranged at the interval of one wavelength and the counter-rotating type wave power unit whose runners are submerged in the seawater at the middle position of the platform. Such profiles make the flow velocity through the runners two times faster than that of the traditional fixed/caisson type OWC （oscillating water column）, that is, the runners may be able to get the dynamical energy eight times on the ideal. Besides, the runners counter-drive the inner and the outer armatures of the peculiar generator, respectively, and then the relative rotational speed is two times as fast as the speed of the single runner/armature. Such characteristics make the runner diameter large, namely the output higher, as you request, because the rotational moment of the power unit hardly act on the floating type platform. This paper, as the first step, discusses the platform behaviors at the normally oscillating wave. The platform behavior is affected by not only the length and the amplitude of the wave but also the relation between the weight of the platform and the buoyancy force of the floats.

关键词： Renewable energy ocean wave float platform counter-rotation power unit.

扩大机器人浮标舰队,助力全球海洋动力学研究

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Engineering 2023年第3期22卷 10-13页

作者： Chris Palmer Senior Technology Writer

In 2023, oceanographers will deploy hundreds of free-drifting robotic floats equipped with sets of custom-built sensors engineered to measure multiple biogeochemical (BGC) characteristics of the world’s oceans, including pH, oxygen, nitrate, and chlorophyll levels. The project, BGC-Argo, piggybacks off the success of the international Argo program, which over the last 20 years has tracked the temperature and salinity of the planet’s oceans with thousands of autonomous cylindrical robotic floats (Fig. 1). With the addition of fleets of more advanced deep water and BGC-Argo floats, the program’s researchers and collaborators aim to answer more complex and vital questions about the ocean’s productivity, carbon cycling, acidification, and ecosystem variability [1].

关键词： float 海洋动力学 planet

Flow around Wells Type Runner Installed in floating Type Unique Ocean Wave Power Station

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Journal of Energy and Power Engineering 2014年第11期8卷 1974-1981页

作者： Shun Okamoto Toshiaki Kanemoto Huang Bin Toshihiko Umekage Graduate School of Engineering Kyushu Institute of Technology Kitakyushu 804-8550 Japan Faculty of Engineering Kyushu Institute of Technology Kitakyushu 804-8550 Japan

The authors have proposed the unique ocean wave power station, which is composed of the floating type platform with a pair of floats lining up at the interval of one wave pitch and the power unit where the runners are submerged at the middle of the platform. Such a profile can make the flow velocity at the runner twice faster than that of OWC （oscillating water column） type constructed adjacent to the seashore. The behavior of the platform in the wave has been reported, and this paper continuously investigates the effects of the runner casing on the runner work and the platform behavior. Besides, the flows around the Wells type, not only single runner but also tandem runners are investigated numerically. It was confirmed that the runner work attenuates the platform amplitude and the runner casing contributes to increase the output. The flow simulation suggests that the tandem runners may be appropriate for the floating type ocean wave power station to get enough output.

关键词： Renewable energy ocean wave float platform counter-rotation power unit.