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网络化变电站自动化系统的应用
陈升
电力系统自动化 , 2002,
Abstract: 将自动化主站系统的技术引入到变电站中,构建变电站自动化系统,并通过网络与主站系统相连,形成功能强大的、崭新的自动化系统。介绍了网络化变电站自动化系统的系统结构,与主站的3种通信连接方式,即光纤直接连接、通过数字通信设备连接和通过数据网络连接,以及站内的通信组网方案和主要工程应用体会。
单输入功率谱统计检测算法的研究
陈兵,陈升,吴龙标,范维澄
自然科学进展 , 2002,
Abstract: 结合数字信号处理的功率谱分析方法,分析了火灾信号的频谱特征,并通过计算火灾信号与非火灾信号的功率谱密度差,以及大量的实验数据的处理、分析,研究功率谱统计检测算法在火灾探测信号处理中的应用.
混凝土断裂模量的尺寸与强度效应
Effect of Size and Strength Grade on the Concrete Modulus of Rupture
 [PDF]

陈升, 易治民
International Journal of Mechanics Research (IJM) , 2013, DOI: 10.12677/IJM.2013.22005
Abstract:

本文用有限元数值模拟的方法研究了混凝土的断裂模量,建立了断裂模量与试件尺寸以及混凝土强度等级的关系。数值试件采用了不同尺寸的三点弯曲混凝土简支梁。在数值模拟中采用弥散裂缝模型模拟混凝土开裂,用非线性拉应力与开裂应变软化曲线模拟混凝土裂缝的进一步扩展。数值试验中考虑影响混凝土断裂模量的因素为混凝土强度等级和梁的高度,最后在数值结果的基础上建立了混凝土断裂模量与脆性指标之间的关系。

In this paper, the flexural strength of plain concrete beams subjected to three-point bending was numerically studied using the finite element program DIANA. Instead of using a discrete crack model, a smeared crack model is adopted in the numerical simulation. A non-linear tension softening curve was used to model the gradually diminishing tensile strength of concrete upon further crack opening. The factors influencing the flexural strength of plain concrete beams considered in this paper are the concrete strength grade and the beam depth. These two factors can be combined into one material parameter and the brittleness index. A relationship between the ratio of flexural strength to the tensile strength and the brittleness index was proposed based on the numerical results.

刚性加荷技术和加荷形式对岩石变形全过程力学性态的影响
陈升
力学与实践 , 1984,
Abstract: (一)引言在对岩石变形全过程力学性质的研究中,碰到的最大困难是荷载的施加或变形状态的实现.为此,研究者在技术上花了不少功夫,初期是在普通试验机上附加刚性元件,其后是研制大刚度的试验机,以及使用电液伺服控制系统.尽管工作进展很大,但目前不论在对实验技术的评价方面或对实验结果的认识方面,尚存许多不同的看法:有人强调试验机的刚度影响了
刚性加荷技术和加荷形式对岩石变形全过程力学性态的影响
陈升
力学与实践 , 1984, DOI: 10.6052/1000-0992-1984-076
Abstract: 引言在对岩石变形全过程力学性质的研究中,碰到的最大困难是荷载的施加或变形状态的实现.为此,研究者在技术上花了不少功夫,初期是在普通试验机上附加刚性元件,其后是研制大刚度的试验机,以及使用电液伺服控制系统.尽管工作进展很大,但目前不论在对实验技术的评价方面或对实验结果的认识方面,尚存许多不同的看法有人强调试验机的刚度影响了...
用Leggett-Williams不动点定理多点边值问题的3个正解
陈升
四川师范大学学报(自然科学版) , 2009,
Abstract: Sturm-Liouville边值问题由许多应用,并且被许多人已研究过,大多数研究的结果主要集中在至少一个正解的存在性商。研究了更一般的Sturm-Liouville多点边值问题,通过应用Leggett-Williams不动点定理,建立了多点边值问题至少存在了3个正解的充分条件,从而推广了以前的定理,并举例说明了所得的主要定理的有效性。
反分析法确定钢纤维水泥砂浆的拉伸残余强度
陈升
武汉理工大学学报 , 2007,
Abstract: ?根据三点弯曲缺口梁的荷载与裂缝张开位移曲线,用反分析法确定了钢纤维水泥砂浆的拉伸残余强度。试验制作了5种不同体积含量的钢纤维水泥砂浆试件。采用虚拟裂缝模型用有限元法数值模拟了三点弯曲缺口梁的荷载与裂缝张开位移,用反分析法确定了钢纤维水泥砂浆的弹性模量和拉伸残余强度。研究结果表明,数值模拟得到的钢纤维水泥砂浆弹性模量以及三点弯曲缺口梁荷载与裂缝张开位移曲线均与试验结果吻合较好,且在常用的钢纤维含量范围内,钢纤维水泥砂浆的残余强度与钢纤维含量基本上成正比。
大苞红唇益智选育研究
禹玉华,唐源江,廖景平*,陈升,方坚平,,樊汉明?
热带亚热带植物学报 , 2005, DOI: 10.3969/j.issn.1005-3395.2005.1.014
Abstract: 采用杂交育种和系统选育技术,利用良姜亚属的益智(alpiniaoxyphyllamiq.)作母本,艳山姜亚属的小草蔻(alpiniahenryik.schum.)作父本,进行远缘杂交,经多年多代分离、筛选和鉴定,从其杂交后代中选育出姜科花卉新品种大苞红唇益智。该品种综合园艺性状优良,主要表现为具有较强的丛生性,花序直立,花大艳丽,唇瓣红色,赏花期长,适应性广。适合于园林布置或生产切花用。
Research on Transmutation of Urban-rural Transition Region Based on Remote Sensing Analysis in Wuxi
基于遥感分析的无锡市城乡过渡地域嬗变研究

杨山,陈升
地理学报 , 2009,
Abstract: Based on the analysis of remote sensing images (landsat TM and MSS) of Wuxi in recent 30 years, we found that the landscape of urban-rural transition region was in the form of suburban agriculture before market economy took the dominant position (the mid-1990s of China). After that, the landscape of suburban agriculture disappeared. The urban-rural transition region transmuted from suburban, a concept of administrative division, to urban-rural coupling region with new urban-rural relationship. On the other hand, administrative division adjustment lagged behind the transmutation of landscape and social attributes. In this paper, urban built-up area is composed of consecutive city buildings, and urban-rural transition region is the external region of urban built-up area. Urban and rural areas are the complex giant systems that contain many social, cultural, economic, and landscape factors. And the urban-rural integration results in urban-rural coupling region. The term of transmutation represents not only the evolution of things but also the complete change of the essence of things. Transmutation of urban-rural transition region refers to the complete change from quantitative to qualitative of its space and attribute. Through the establishment of the transmutation model, urban and rural factors in the transmutation of transition region are divided into internal factors (u) and external factors (v) as control variables. According to analysis of the factors influencing the urban-rural transition region, we found that the external control factors, such as the percentage of built-up area and the index of transportation accessibility, are dominant in transmutation. At the same time, external control factors bring about the changes of internal control factors such as non-agricultural employment population, non-agricultural industries, and construction land. The irreversible changes of the factors, such as expansion of built-up area, lead to an irreversible transmutation of urban-rural transition region. So the transmutation is different from normal catastrophe theory model in irreversibility. Based on the above-mentioned studies, we provide a scientific basis for overall planning of urban and rural region. By accelerating the changes of external conditions of rural region, we can promote the rural development, and also provide a basis for adjustment of administrative divisions of the city to meet the need of economic development. As a result of the rapid expansion of urban built-up area, urban-rural transition region has almost expanded into the entire administrative area. So the further expansion of urban built-up area is bound to create a form of urban and rural interaction beyond the administrative boundaries.
基于遥感分析的无锡市城乡过渡地域嬗变研究
杨山,陈升
地理学报 , 2009, DOI: 10.11821/xb200910008
Abstract: 对无锡市30年遥感影像分析表明,20世纪90年代中期之前,无锡市城乡过渡地域用地形态主要以郊区农业形态存在,从1998年以后,郊区农业形态消失。城乡过渡地域从行政区划概念下的郊区嬗变为具有新型城乡关系的城乡耦合地域,但行政区划的调整滞后于空间用地形态及社会属性的嬗变;通过建立嬗变模型,分析影响无锡市城乡过渡地域的嬗变因素,外部控制因素主导着城乡过渡地域嬗变,同时引导内部控制因素变化,并且城乡过渡地域嬗变具有不可逆转性,城乡统筹规划中应强化乡村外部条件促进乡村发展。
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