C3I系统仿真测试环境的设计与实现

C^3I系统仿真测试环境的真实性、准确性、可控性影响系统测试效能的评估。在分析舰载C^3I系统的测试和评估需求基础上,提出了C^3I系统仿真测试环境的功能、系统框架、信息流程,研究了建立仿真测试环境的剧情产生、综合环境模拟、测试和评估等主要技术,介绍了通过HLA和半实物仿真技术建立的仿真测试环境的硬件和软件组成,以及用于C^3I系统功能、性能和效能测试的情况。     

An integration architecture for flexible manufacturing cells

A modern flexible manufacturing cell (FMC) usually consists of several distributed control systems, including machining centres and material handling systems. Modelling an FMC to evaluate its design and performance, and translating the resulting models into operational programs are complex, but critical steps in implementing an FMC. This paper represents an architecture for the design, integration, and implementation of an FMC. The primary focus is on defining the process and functional requirements of the system, designing the system using high-level abstraction tools that ensure system integration and effective communication with users and implementors, and using efficient algorithms and effective interfaces for implementing real-time process control.     

目标情景下的电解铝行业低碳路径探究——以山西省为例

在“双碳”背景下,铝冶炼行业面临着巨大的减排压力。以山西省某电解铝企业为例,对2021年该企业各环节碳排放进行核算,识别影响电解铝行业碳减排的主要因素。采用情景分析法,对2021-2030年山西省电力结构调整、电解铝低碳技术升级及再生铝应用进行预测,建立电解铝碳排放多因素分析模型,探究在基准情景、政策情景下各控制变量对降低企业吨铝碳排放的影响。结果表明：电力结构变化对该企业温室气体减排量贡献最大,2030年基准情景下减排量可占总排放量的31.63%,政策情景下减排量占总排放量的40.66%;电力结构变化及再生铝占比变量耦合时,减排效果最为显著,2030年政策情景中减排量占总排放量的67.82%;三耦合情况下,该企业碳排放逐步趋于零。     

基于BP神经网络的我国铁矿资源需求情景分析

在介绍世界铁矿资源概况以及我国铁矿资源供需现状的基础上,对影响我国铁矿资源需求的主要因素进行了深入分析,然后利用BP神经网络建立了铁矿资源需求情景分析模型,并利用2001-2011年相关数据进行了测算,得出2013-2025年我国铁矿资源需求情景。研究结果表明：未来我国铁矿资源进口依存度将达到25%~35%,虽然有所降低,但仍然比较高。     

A local-scale low-carbon plan based on the STIRPAT model and the scenario method: The case of Minhang District,Shanghai, China

To achieve a goal of reducing the emission intensity of carbon dioxide in 2020 by 40–45% relative to 2005 in China, the framework for a low-carbon scenario was developed on a small scale in Minhang District, Shanghai. The STIRPAT model was employed to reveal the factors that contribute to CO₂ emissions in this district: the increase of population, affluence and urbanisation level would increase CO₂ emissions, but energy intensity would decrease. Stakeholder involvement was another key component of the framework, and in this case, several rounds of negotiation and feedback resulted in fifteen final scenarios with the estimations of CO₂ emissions in 2015. For the low-carbon development plan of Minhang District, the model considered the actual capacity and development potential of this district, the best scenario combining with the high rates of affluence growing and energy intensity reducing as well as the middle rates of population growth and urbanisation level. The final CO₂ emissions of this scenario were 66.1 Mt in 2015. Based on these results, strategic suggestions have been proposed to reduce future energy intensity in Minhang District through industrial and energy resource structure reformation, lifestyle change and the transportation system improvement in this district.     

ASP访问数据库技术

介绍ASP技术访问数据库的原理、步骤和应用实例.     

Foresight and governance: a problem-oriented methodology (GOVSIGHT)

A problem-oriented methodology for technology foresight is proposed in this paper stemming from the Portuguese project 'Engenharia e Tecnologia 2000' and oriented to support governmental policy making. This methodology includes several models from operational research to classify knowledge and to assess its impact on societal development, contributing to a better relationship between science and society, and to implement a new paradigm of development based on knowledge society.     

Stochastic programming and scenario generation within a simulation framework: An information systems perspective

Stochastic programming brings together models of optimum resource allocation and models of randomness to create a robust decision-making framework. The models of randomness with their finite, discrete realisations are called scenario generators. In this paper, we investigate the role of such a tool within the context of a combined information and decision support system. We explain how two well-developed modelling paradigms, decision models and simulation models can be combined to create “business analytics” which is based on ex-ante decision and ex-post evaluation. We also examine how these models can be integrated with data marts of analytic organisational data and decision data. Recent developments in on-line analytical processing (OLAP) tools and multidimensional data viewing are taken into consideration. We finally introduce illustrative examples of optimisation, simulation models and results analysis to explain our multifaceted view of modelling. In this paper, our main objective is to explain to the information systems (IS) community how advanced models and their software realisations can be integrated with advanced IS and DSS tools.     

Scenario inspections

Scenarios help practitioners to better understand the requirements of a software system as well as its interface with the environment. However, despite their widespread use both by object-oriented development teams and human–computer interface designers, scenarios are being built in a very ad-hoc way. Departing from the requirements engineering viewpoint, this article shows how inspections help software developers to better manage the production of scenarios. We used Fagans inspections as the main paradigm in the design of our proposed process. The process was applied to case studies and data were collected regarding the types of problems as well as the effort to find them.

Scenario animation for visual behavior models: A generic approach

Visualizing and simulating formal models in a flexible way becomes increasingly important for the design of complex systems. With GenGED, a tool is available which automatically generates a visual environment to process (create, edit, check, simulate) visual models over a specified visual language. Both the specification of the language and the model manipulation are based on graph grammars. In this paper, we present the means to transform visual models into application oriented views, called scenario views. We show how a model is consistently transferred to a scenario views and animated there. The extension of GenGED concerning scenario animation is discussed.