共查询到20条相似文献,搜索用时 93 毫秒
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王永琦 《数码设计:surface》2021,(8):62-62
园林绿化工程在城市建设中扮演越来越重要的作用,一方面,可以美化城市环境,另一方面,可以改善环境质量,所以,在园林绿化工程施工中,要做好定期养护与管理工作,从而为园林绿化工程施工质量提供重要保障,充分发挥出园林绿化工程作用。以下主要围绕园林绿化工程发展现状展开简单的分析与探讨。 相似文献
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显示器的突出地位 就像每个人都要有一张脸一样,但凡是电脑:台式机、笔记本,Apple机、PC机,名牌的也行、DIY的也行,都要有一台显示器。不仅如此,显示器在电脑上还处于至关重要的地位:价格占整台电脑的1/5~1/4;用户通过它掌握电脑的工作状况、察看自己的工作进程、欣赏自己的作品、感受自己的劳动成果。 相似文献
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张伟华 《电脑乐园·学生电脑》2021,(9)
随着我国城市化进程的加快,推动了园林绿化行业的发展,项目数量和规模都有了较大的突破,对生态环境的改善起到积极作用。为了充分体现出园林绿化工程的价值,在施工过程中要加强管理,进行动态控制。还要选择合适的养护技术,并加强创新,确保工程质量的可靠性,提高植被的成活率。 相似文献
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郑杰 《数码设计:surface》2021,(6):69-69
河道堤防属于我国水利设施建设的重要环节,同时也是预防洪涝灾害以及保障耕地水源能充足的关键。自从改革开放之后,我国在河道堤防方面的建设项目不断增多,随着近些年河道堤防的使用年限不断延长,关于河道堤防的维修养护工作重要性越发突出,如何有效提高河道堤防的安全性显得越发重要。对此,为了进一步推动水利行业长远发展,本文简要分析河道堤防维修养护措施,希望可以为相关从业者提供帮助。 相似文献
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Steve Greenbaum 《Journal of Automated Reasoning》1997,18(2):259-264
Violet is an easy-to-use theorem prover based on locking resolution, with integrated equality extensions that use term rewriting and Knuth–Bendix completion. Violet participated in the CADE-13 ATP System Competition. 相似文献
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主要是阐述了长治市近年来在水利水保项目建设管理中的突出问题,对该市在水利水保项目中存在的各类不利因素进行了分析,并以此为基础,提出了相应的对策。 相似文献
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In this paper we consider the potential of using an aggressive form of energy conservation for mobile computing environments. The estimators for the round-trip time and round-trip time variance used by TCP are used to direct the transceiver of a mobile node to idle over extended periods of time when packet activity is not anticipated. In addition, we consider data link layer extensions that provide additional control information allowing the mobile to be further selective as to when to idle and when to activate the network interface device. Simulations are conducted to examine the performance of the proposed scheme under various levels of congestion in the fixed part of the network, from completely unloaded to fully congested. The simulations reveal that the technique is promising but its effectiveness depends crucially on the control of the maximum window size used by TCP and on accurate knowledge of the congestion conditions in the network. 相似文献
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In this paper we discuss the issue of conservation and convergence to weak solutions of several global schemes, including the commonly used compact schemes and spectral collocation schemes, for solving hyperbolic conservation laws. It is shown that such schemes, if convergent boundedly almost everywhere, will converge to weak solutions. The results are extensions of the classical Lax–Wendroff theorem concerning conservative schemes. 相似文献
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In this paper we discuss an adaptive method for the compulation of discontinuous solutions of hyperbolic conservation laws. In each time level we use very simple sensors for detecting discontinuities of the solution. The adaptive scheme use first order upwind flux computation in the immediate neighborhood of these irregularities. Since the differential equation holds in the smoothness domain, we follow the characteristics in the lime marching procedure at grid points in that domain. 相似文献
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水土保持监测站比较偏远、分布广泛,不具备有线网络,且业务特点是数据量不大,实时性要求不高,特别适合利用GSM的短消息服务远程传送水土保持监测数据,本文介绍基于此技术开发的水土保持监测数据管理系统. 相似文献
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刘艳红 《自动化技术与应用》2011,30(2):58-59,62
针对传统压电陶瓷自动分选系统中能耗高、噪音大和自动化程度低等缺点,提出一种实用方案,该方案利用PID算法和变频器实现系统恒压节能控制.实践证明,该系统节能效果突出,改善了陶瓷元器件的生产工艺,具有较大实用价值. 相似文献