精装建筑电气设计特点及对策

随着生活水平的提高,人们对商业的品质也越来越重视,部分建筑项目在一次结构尚未完成的情况下,已经开始了精装设计,同时也有很多项目是二次精装改造。论文针对此类工程介绍精装项目中电气专业的一些特点。     

Minimising total cost with regular and emergency outsourcing sources: a neuro-dynamic programming approach

This study models and explains the business situation of an organisation which has regular and emergency outsourcing sources and where decisions have to be made at the beginning of every period regarding how much to order from these sources, so as to balance between different cost components of current and future periods. Previous works in this area have tried to attack this problem with dynamic programming. In this project, neuro-dynamic programming has been applied, and the reasons for doing so have been clearly stated. This model not only derives policies in order to minimise the expected total discounted cost over a period of time, but also enables the system to learn to make such decisions, and to improve its actions by using reinforcement learning. The performance of the present work has been measured quantitatively and has been compared with the models stated in literature. This study will be very useful for the organisations where such business problems exist or are likely to exist. This study will also be of great use to researchers, who are keen to understand and model the given business situation with distribution independent demand based models.     

Adaptive trajectory generation based on real-time estimated parameters for impaired aircraft landing

ABSTRACT

This paper is motivated by a need to address the challenge of securing a safe landing after suffering from inflight impairment. In this paper, a new adaptive generalised model predictive static programming (G-MPSP) is developed to generate a safe emergency landing trajectory for impaired aircraft. Utilising the computationally efficient G-MPSP framework, the proposed algorithm enables adaptation of model parameters based on the prediction errors to ensure reasonable guidance performance. Based on the estimated parameters, a feasible landing trajectory is then generated by the flexible finite-horizon G-MPSP with input constraints. The integrated approach features explicit closed-form solutions for both parameter estimation and trajectory generation. Its effectiveness is demonstrated by simulations in the presence of parameter uncertainties and noises and by comparison studies with the non-adaptive G-MPSP.     

Recommendations for dispatching emergency vehicles under multitiered response via simulation

Emergency medical service (EMS) systems provide medical care and transportation. While many real‐world systems use multiple vehicle types to attend different call priorities, few guidelines exist about which vehicles to allocate in multitiered responses where more than one vehicle is sent per call. This paper makes recommendations for multiple‐unit dispatch to multiple call priorities based on simulation optimization and heuristics. The objective is to maximize the overall expected survival probability of patients classified as “life‐threatening”. We assume two types of medical units and three call priorities; and that information may be updated when the medical unit arrives on‐scene. First, we study the optimal dispatching policies through several examples. Numerical results show that dispatching while considering call priorities, rather than dispatching the closest units, improves EMS system effectiveness. A heuristic algorithm is developed for large‐scale problems. A comparison between the heuristic and closest policy is demonstrated using real‐world data.     

Effects of seismic and aerodynamic load interaction on structural dynamic response of multi-megawatt utility scale horizontal axis wind turbines

Horizontal axis wind turbines can experience significant time varying aerodynamic loads that has the potential to cause adverse effects on structural, mechanical, and power production. The progress in the wind industry has caused the construction of wind farms in areas prone to high seismic activity. With the advances in computational tools, a more realistic representation of the behavior of wind turbines should be performed. One of the simulation platforms was developed using the 5 MW NREL utility scale reference turbine model. The performed simulations will be used to evaluate the effects of aerodynamic and seismic load coupling on the power generation and structural dynamics behavior of this structure. Different turbine operational scenarios such as (i) normal operational condition with no earthquake, (ii) idling condition with the presence of seismic loads, (iii) normal operational condition with earthquake, and (iv) earthquake-induced emergency shutdown will be simulated with various loading conditions to show the differences in generated power and dynamic response. The results of this paper provide formulations for calculating generated power and design deriving parameters by considering different intensity measures. Moreover, the effects of aerodynamic damping and pitch control system are presented to shows reduction in the resulting design demand loads.     

蓄热式加热炉抢修施工技术

介绍了韶钢板材厂蓄热式加热炉的抢修施工,鉴于抢修中的施工质量、施工进度、施工成本三者之间的相互矛盾,以及关键部位的结构错综复杂、施工工艺难度大和劳动强度高等因素,实行技术创新,研制出各种有助施工的设施,圆满地解决了各种问题,从而确保了蓄热式加热炉抢修工程按期完成,并对抢修施工技术所取得的效果进行了评价,以期为今后类似的炉窑工程施工提供有益借鉴。     

Maintenance and emergency management with an integrated indoor/outdoor navigation support

Large and complex infrastructures as industry plants and hospitals are vulnerable to natural, man-made disasters, and causality events. In this paper, we present a solution addressing the guiding personnel during maintenance and/or emergency conditions. The aim is to reduce the time needed to react and to cope with organization and maintenance support, while facilitating communication, and indoor/outdoor navigation. The solution is based on the formalization of protocol, the modelling of knowledge for navigation, the algorithms and the development of a mobile application and corresponding server device for integrated indoor/outdoor navigation. The navigation algorithms are based on low costs mobile sensors and Adaptive Extended Kalman Filter. The solution has been validated and tried out within a large medical infrastructure, thus demonstrating the validity of the identified modalities and procedures, measuring the advantage from both qualitative and quantitative aspects. The indoor navigation solution has been compared with other former solutions based on classical Kalman and dead reckoning.     

“流程组合法”用于医院建筑设计的探讨

本文提出一种称为“流程组合法”的医院建筑设计方法。通过讨论医院设计中流程设计的重要性和复杂性，并对大型综合医院的主要和分支流程如何组合提出建议，以及通过对某军区总医院急诊急救部的设计内容介绍，从理论基础、实施方法、实际工程三个方面探讨了流程组合法的应用。     

东莞市供水安全应急保障措施探讨

阐述了东莞市供水现状及主要存在问题，分析主要供水应急类型，并提出相应的供水安全应急保障措施。     

多方异地视频会议系统建设的研究

根据天津冶金集团的发展需求,分析出建设视频会议系统的必要性。提出了多方异地视频会议系统建设的功能需求、原则及设计方法。该系统实现了客户实时沟通、产品演示、远程可视化技术支持和维护、员工培训及招聘等功能,节省了时间,提高了沟通质量和效率,取得了较好的经济效益。