管道输水灌溉工程规划设计与施工问题探讨

在管道输水灌溉工程规划设计过程中，笔者通过对项目规划设计和组织施工实施阶段的具体参与和资料收集整理，总结和分析从以下几个方面提出问题探讨。     

营林生产中造林规划设计与造林技术讨论

随着国家林业的发展,营林生产工作受到广泛重视,然而,传统的造林规划设计中还存在一些问题,基于此,本文针对江苏宿迁区域造林规划设计与造林技术的应用进行分析,提出几点工作建议。     

植物园的规划设计探讨

阐述植物园选址的要点、展览区中植物的几种布置方式、道路规划中应注意的几点问题以及景观生成的方略,为植物园规划设计提供参考。     

浅析大学校园景观设计

从大学校园环境景观的重要性及作用,规划设计原则,规划设计内容几方面来探讨现代大学校园环境景观设计。     

氐羌民俗村规划设计研究——以略阳县九中金民俗村规划设计为例

以略阳县九中金民俗村规划设计为例,从设计原则和设计元素定位几个方面对氐羌民俗村规划设计进行了研究,并提出了民俗村设计存在的几个难点和解决方案。     

林业调查规划设计工作中存在的问题及处理应对

本文以河北省塞罕坝机械林场为例,首先简述了该林场林业资源现状,后针对林业调查规划设计工作中存在的问题提出几点有效的处理应对建议,仅供参考。     

浅谈贵州省林业调查规划设计及其提升水平的对策

该文介绍了贵州省生态林业建设的现状,并对林业调查规划设计在生态林业建设中的作用进行分析,提出林业调查规划设计中需要注意的几个基本原则,提升林业调查规划设计水平的对策,为全面推进贵州生态林业建设提供参考。     

农田水利工程规划中的抗旱防涝设计要点

农田水利工程是保障农业现代化发展的关键,作为相关设计人员,在科学分析农田水利规划设计区域后,要不断对其进行实践考察,并有效地对其规划设计进行优化。本文重点从抗旱防涝设计角度分析,提出几点规划设计建议。     

林业规划设计与调查方法的思考

林业调查设计是林业生产建设的技术基础工作,建立林业调查规划设计质量管理体系,它的存在与发展决定于林业生产建设事业的存在与发展。全面贯彻科学发展观,对林业调查规划设计调查进行有效控制更好地服务于现代林业建设事业。本文在分析我国林业调查规划工作中存在的问题的基础上提出了几项解决建议。     

农村土地整治项目规划设计存在的问题及对策建议

农村土地整治项目的规划设计是土地整治项目的重要步骤,但由于我国开展农村土地整治项目规划设计时间不长,积累不足,导致规划设计存在诸多问题,直接影响农村土地整治项目的顺利实施。该研究以重庆市为例,通过文献综述法、实例分析法等研究方法,在提出规划设计应遵循的原则基础上,剖析当前土地整治规划设计存在的问题及产生问题的原因,并提出了相应的对策与建议:一是提高规划设计行业门槛,加强行业自律;二是完善相关项目设计要求;三是强化规划设计项目的针对性;四是加强规范管理;五是充分尊重民意。     

宁波地区古建筑营造风格及其在当代设计中的转化方式探析

传统与现代是目前地域建筑环境设计的重大课题，为此，笔者深入探寻宁波地区古建筑的营造风格，并结合实例概括其在当代设计中的应用转化的3种方式。     

Application of computational fluid dynamics for modeling and designing photobioreactors for microalgae production: A review

The past decade has seen a rapid increase of numerical simulation studies on photobioreactors (PBRs). Developments in computational fluid dynamics (CFD) and the availability of more powerful computers have paved the way for the modeling and designing PRBs, a strategy that was abandoned from the late 1970s until the 1980s because of its complexity. This paper reviews the present status of numerical modeling for PBRs as well the application of CFD in the design of PBR for the mass production of microalgae. Emphasis is on the major breakthroughs in PBR design that may lead to scaling-up. Most simulations have been conducted in bubble column PBRs, which offer many advantages. Their geometry is simple in design with no moving parts, and they are easy to construct and operate. A majority of published simulation studies used two-phase models (air and water) and employed the Eulerian-Eulerian mixture model. CFD models have been vigorously validated by experimental and laboratory studies, with most claiming to have achieved good results. However, current PBR scale-up projects still need to resolve hydrodynamic issues within the PBR, in order to optimize factors for microalgal growth. To create ideal conditions inside the PBR, the main factors that influence microalgal growth such as light intensity and distribution, gas injection and mixing, and hydrodynamics/flow pattern which are the key for design and scale up must be thoroughly understood.The present practice of PBR design using CFD can be considered both an art and a science because of some numerical simulation issues which are yet to be resolved and the complexity of fluid mechanics inside the PBRs. Nonetheless, CFD has proven to be an effective tool in predicting the complex inherent phenomena in the PBRs. The CFD technique has shown to be very promising to successfully design and develop PBRs which can be commercially available for scale-up.     

当前我国新农村建设过程中的景观设计探析

在对当前我国农村景观设计现状进行分析的基础上,简要论述了新农村建设过程中的景观设计方法、原则、理念和保障措施等相关问题,为相关的理论研究提供了参考和借鉴。     

医学信息检索课网络考试系统的设计与实现

针对医学信息检索课特点，提出了基于网络，采用Browser/Server和Client/Server结构相结合的网络考试系统方案。同时从体系结构、功能设计、关键问题及解决方案等方面阐述了网络考试系统的设计与实现。

     

植物三维形态交互式设计软件需求分析探讨

数字植物是当前植物学研究的热点问题之一,植物三维形态结构建模是数字植物研究面临的首要问题,三维形态交互式设计是实现数字植物形态结构建模的重要技术手段之一。而面向科学研究、高校教学、品种推广、技术培训、虚拟仿真不同应用领域,对植物三维形态交互式设计软件产生不同的需求。本文对植物三维形态交互式设计任务和目标进行分析,并结合现有研究成果和应用实例,对相应的植物三维形态设计系统软件的系统设置、形态设计、动态模拟、可视化展示与计算等方面的需求进行探讨,以期为植物三维形态设计乃至植物虚拟仿真技术提供技术参考。     

管道水平定向钻穿越技术的特征分析

简述了驻马店-信阳天然气输气管道淮河水平定向穿越施工的地质条件和设备的配置,介绍了管道水平钻进的入射角、出口角、曲率半径和深度等设计要素的确定方法,分析了导向钻孔、扩孔、回拖受力的特点和计算方法,并针对施工技术难点提出了相应的解决方案.     

Ethics in computer software design and development

Over the past 20 years, computer software has become integral and commonplace for operational and management tasks throughout agricultural and natural resource disciplines. During this software infusion, however, little thought has been afforded human impacts, both good and bad. This paper examines current ethical issues of software system design and development in relation to privacy, accuracy, property, accessibility, and effects on quality of life. These issues are explored in the context of simulation models, databases, geographic information systems and artificial intelligence programs, especially expert systems. New approaches to system development place a much higher emphasis on the effects of system deployment within a complex human environment. Software design decisions often depend on more than one ethical issue, possibly conflicting, where the appropriate ethical choice is not always clear cut. Professional codes of ethics do little to change peoples’ behavior; rather, incentives for using an ethical approach to software development may lie in significantly increased likelihood of system success.     

Not just what, but how: Creating agricultural sustainability and food security by changing Canada's agricultural policy making process

Agriculture has been enormously productive in recent decades. The main problem is that fragmentation of issues, knowledge, and responsibilities has hidden the costs associated with this success. These are mainly environmental, social, and health costs, which have been assigned to other ministries, with their own histories unconnected to agriculture. Now that agricultural policy has achieved its success, its costs are becoming apparent. The current system is preoccupied with traditional views of competitiveness and efficiency. Policies, programs, and regulations are organized to support specific commodities, not farming and food systems. Responsibilities are extremely fragmented and frequently uncoordinated. In this environment, the focus on nourishment, food security, and environmental sustainability is subordinated to economic issues.The future lies in reorienting agricultural policy away from maximum production and towards sustainability. We propose a major transformation of the policy making apparatus in order to shift the focus of the system towards nourishment, food security, and sustainability. A new policy making system must be built on the themes of: integrated responsibilities and activities; emphasis on macro-policy; transdisciplinary policy development; proximity of policy makers to the diverse groups affected by problems needing resolution; food systems policy.The design principles for such a new system are taken from the theory of food security and ecology. Using these principles, we design a new provincial department of food and food security, and test this design with two case studies.     

对园林景观设计“流行病”的探讨

结合多年来的实践,通过观察、分析、总结当今园林景观设计中的诸多"流行病",并以此对这些问题作出深思。     

西气东输二线工程的设计管理问题

西气东输二线项目规模庞大,面对众多的业务接口和信息接口,极易在设计质量、设计进度、配合施工、变更处理等方面出现问题。例如:下游用户分输量和分输口变化,设备资料不完备,运行单位在施工阶段对设计提出修改意见,地方规划导致路由确定困难,与地方协调能力欠缺,初设和地质勘察深度不够,专项评估和文件报批周期长等。同时,施工图设计漏项、地质勘探不详、设计不细,设计勘察分包缺乏有效的资质审查和管理,不及时执行集团公司的标准要求,设计联合体各单位之间缺乏有效的沟通与协调,设计单位工作效率低,图纸设计变更频繁等问题,均对施工进度和施工成本产生较大影响。基于对项目实施过程中设计管理问题的梳理和剖析,提出设计改进的可行性建议。