恒液位水箱侧槽水面线的数值计算和实验研究

本文从流体力学基本原理出发,建立了水流量标准装置恒液位水箱侧槽流动的基本微分方程式,并运用数值方法求得其近似解。根据有限差分法计算的侧槽水面线与实验结果基本吻合。在此基础上,本文分别对于水平和倾斜槽底这两种情况提出了进行工程设计的方法和实用计算公式。至此,作为文献[1]、[2]的延续和补充,本文完全解决了水流量标准装置恒液位水箱水面结构的设计方法问题。     

水利碑刻与中国近代水权纠纷解决

水利碑刻记录了水权运作的细节及规律,对我们探讨近代水权纠纷解决具有重要史料价值。碑刻通过对以往水权案件的宣示,不仅可形成水利社会公认的价值观念,也可起到预防、遏制水权纠纷的作用。如果不发生纠纷,水利碑刻是水权运行的章程、规则,以警告、宣示等手段,维护正常水权秩序的运行;如果发生了纠纷,就不仅是处理纠纷的证据,还是处理纠纷的法律、准则。就形式而言,水利碑刻是传统的,甚至有点古老,但是,它仍对近代,乃至当代水权纠纷的解决具有一定借鉴价值。     

明代宝应地区水利事业研究简

明代宝应地区水利状况复杂,水涝灾害频繁．不仅威胁到河运、漕运,而且对宝应地方社会造成了严重危害。为了变水害为水利,明代国家和地方重视宝应水利事业建设。一方面,完善水官设置、筹措水利资金;另一方面．修筑堤岸闸坝,开筑斯河,治理宝应越河。明代宝应水利建设成效显著,对于改善当地区水利状况以及社会发展产生了深远影响。     

河南省南水北调移民学校教育信息化应用问题研究

由于政府的大力支持和相关单位的大力配合,移民学校的教育信息化设备较为先进,但是许多教师教育信息化观念较为落后,信息技能较为欠缺,移民学校教育信息化存在严重的"木桶效应"。解决这一问题,必须从转变观念,加强师资队伍建设、软件资源环境建设以及校园网络建设等方面着手,大力提升移民学校教育信息化水平,提高移民学校的教育教学质量。     

怎样看待《水浒传》中的暴力行为

如何看待梁山好汉的暴力行为?这是明清以来就争论不休的老话题。本文以为应从四个方面加以理解这个问题:一是水浒世界的乱砍乱杀现象是正义集团成长过程中的必然现象;二是梁山好汉的暴力倾向是黑暗专制社会的产物;三是“替天行道”决非一块空招牌,不能否认水浒世界主流的正义性;四是《水浒》渲染血腥场景带有迎合市民审美口味的成分。     

组织部又来了个年轻人 ——重读《沧浪之水》

从文学史的角度来看,《沧浪之水》讲述的是一个“组织部又来了个年轻人”的故事,是对这一主题的续写和改编,也是对“年轻人”和“人”的又一次重新想象。同时,《沧浪之水》是在“新写实”之后现实主义创作的又一次尝试,它在再一次充分地释放现实主义能量的同时,也同样受到了这一写作方式的限制。这一限制既体现在小说的创作当中,也体现在批评家的批评文本里。     

Multi-factor prediction of water flooding efficiency based on a time-varying system

ABSTRACT

The neural network prediction method gets good historical matching between prediction indices and influence factor indices, while the differential simulation prediction method can reflect the changing trend of prediction indices; considering these new traits, a new multi-factor prediction method is proposed to organically combine these two prediction methods. At first, the input–output relation between water flooding efficiency in ultra-high water cut stage and their influence factors is viewed as a time varying system, then the BP neural network is introduced in parameter identification of differential simulation to obtain a new multi-factor prediction method of functional simulation based on the time varying system. This new prediction model has got good self-adaptability since its parameters change by time. Moreover, it has better results in the mid-long-term water flooding efficiency prediction because the non convergence problem appeared in the coupling process can be overcome in the training process of the neural network by variable learning rates. In the end, practical output prediction cases in two different oilfield blocks in China are given. The computational results show that the prediction results obtained using the new multi-factor prediction method are in good agreement with the reality, even much better than the results obtained by other prediction methods.     

Climate Justice and Cultural Sustainability: The Case of Etëtung (Vanuatu Women’s Water Music)

This article investigates connections between climate justice and cultural sustainability through the case of Etëtung, or ‘Vanuatu Women’s Water Music’, as it is found in the ni-Vanuatu community of Leweton. Drawing on existing literature, interviews and field visit observations, I consider how and why Etëtung is proving increasingly important in local efforts toward cultural sustainability and climate justice (social justice as it relates to climate change). Specifically, I focus on three ways in which community members are employing the practice of Etëtung to progress both climate justice and cultural sustainability concerns: first, through the use of Etëtung to maintain and transmit cultural and environmental knowledge; second, through featuring Etëtung in cultural tourism; and third, through drawing on Etëtung to enable greater participation in the regional and international climate change discourse. As such, this article presents and reflects on one multifaceted approach to advancing dual cultural sustainability and climate justice interests, with potential relevance to other contexts in the Pacific and beyond.     

《水浒传》研究中的一个悖论

近来《水浒传》研究中有一种倾向,一方面认为过去对农民起义评价过高,指出它的许多局限和错误,甚至认为它不但不是推动历史前进的动力,而且是破坏社会的力量;另一方面却用极高的标准来要求《水浒传》和他所描写的英雄人物。这就形成一个悖论,一方面贬低农民起义,一方面又用超过农民起义可能达到的要求来批判《水浒传》。     

Taking the reins: A grounded theory study of women's experiences of negotiating water immersion for labour and birth after a previous caesarean section

BackgroundWomen seeking a vaginal birth after a caesarean section (VBAC) frequently want to keep their subsequent labour and birth free from intervention. Water immersion (WI) during labour is potentially an effective tool for women having a VBAC for its natural pain-relieving properties. However, negotiating access to WI can be difficult, especially in the context of VBAC.AimTo explore women's experiences of negotiating WI for labour and birth in the context of VBAC.MethodologyThis Grounded Theory study followed Strauss and Corbin's framework and analytic process. Twenty-five women planning or using WI for their VBAC labour or birth were recruited from two midwifery practices and a social media group across Australia. Participants were interviewed during pregnancy and/or postnatally.Findings‘Taking the reins’, the core category explaining the women’s experiences of assuming authority over their birth, comprised five categories: ‘Robbed of my previous birth experience’; ‘My eyes were opened’; ‘Water is my tool for a successful VBAC’; ‘Actioning my choices and rights for WI’, and ‘Empowered to take back control’. ‘Wanting natural and normal’ was the driving force behind women’s desire to birth vaginally. Two mediating factors: Having someone in your corner and Rules for birth facilitated or hindered their birth choices, respectively.ConclusionThe women became active participants in their healthcare by seeking information and options to keep their birth experience natural and normal. Support from other women and advocacy in the form of continuity of midwifery care was crucial in successfully negotiating WI for their VBAC when navigating the complex health system.