A review of closed-loop reservoir management

The closed-loop reservoir management technique enables a dynamic and real-time optimal production schedule under the existing reservoir conditions to be achieved by adjusting the injection and production strategies. This is one of the most effective ways to exploit limited oil reserves more economically and efficiently. There are two steps in closed-loop reservoir management： automatic history matching and reservoir production opti- mization. Both of the steps are large-scale complicated optimization problems. This paper gives a general review of the two basic techniques in closed-loop reservoir man- agement; summarizes the applications of gradient-based algorithms, gradient-free algorithms, and artificial intelligence algorithms; analyzes the characteristics and application conditions of these optimization methods; and finally discusses the emphases and directions of future research on both automatic history matching and reservoir production optimization.

Improving the Performance of Urban Waste Management Systems in the Context of a Closed-Loop Supply Chain

The saving of non-renewable energies, as well as the reduction of emissions into the environment, are two crucial objectives of industrial production. The recovery of post-consumer products associated with the use of end-of-life products is part of a context of optimization of these objectives. This recovery maximizes the use of resources from end-of-life products in a circular logic while recording the environmental footprint. This study considers a recycling strategy adapted to the need and urgency to reduce greenhouse gas emissions caused by global warming. The proposed model aims to optimize the profits of the circular manufacturing strategies while minimizing operational costs (collection, sorting, recycling), transport, GHG emissions and recycling. In this paper, a compromise between the gains of CM and the costs associated with it was studied. The robustness of the designed model was tested using a case study based on real-world scenarios. A sensitivity analysis was carried out to study the impact of the emission cost on the overall objective, considering the two options currently offered to industries. The obtained results support companies to take the ecological aspect into account and integrate sustainable development into their strategic axes for their logistics supply chains.

Design and analysis of an advanced thermal management system for the solar close observations and proximity experiments spacecraft

In this paper,the mission and the thermal environment of the Solar Close Observations and Proximity Experiments(SCOPE)spacecraft are analyzed,and an advanced thermal management system(ATMS)is designed for it.The relationship and functions of the integrated database,the intelligent thermal control system and the efficient liquid cooling system in the ATMS are elaborated upon.For the complex thermal field regulation system and extreme space thermal environment,a modular simulation and thermal field planning method are proposed,and the feasibility of the planning algorithm is verified by numerical simulation.A solar array liquid cooling system is developed,and the system simulation results indicate that the temperatures of the solar arrays meet the requirements as the spacecraft flies by perihelion and aphelion.The advanced thermal management study supports the development of the SCOPE program and provides a reference for the thermal management in other deep-space exploration programs.

Study the closed loop management system for the coal mines based on risk management

In recent years, the coal safety has been become the urgent problem in China,and severe and fatal coal mine accidents occurred frequently.Must pay attention to coal safety management immediately, because the coal mine accidents not only caused serious economic losses to the country and people but also had negative impact on the society and politics.A closed loop management system was put forward to build to improve the coal safety management.The closed loop management system was formed four parts,identifying the hazard sources, classifying the hidden troubles hazard sources, the risk prealarm and risk control, and the evaluation system.

Stochastic Design of Enhanced Network Management Architecture and Algorithmic Implementations

The paper is focused on available server management in Internet connected network environments. The local backup servers are hooked up by LAN and replace broken main server immediately and several different types of backup servers are also considered. The remote backup servers are hooked up by VPN (Virtual Private Network) with high-speed optical network. A Virtual Private Network (VPN) is a way to use a public network infrastructure and hooks up long-distance servers within a single network infrastructure. The remote backup servers also replace broken main severs immediately under the different conditions with local backups. When the system performs a mandatory routine maintenance of main and local backup servers, auxiliary servers from other location are being used for backups during idle periods. Analytically tractable results are obtained by using several mathematical techniques and the results are demonstrated in the framework of optimized networked server allocation problems. The operational workflow give the guidelines for the actual implementations.

Fruit production and quality improvement in aonla （Emblica Officinalis Gaertn.） through canopy management

In order to maintain the health and vigour and to sustain the productivity, a pruning experiment was conducted on four year old ＂Balwant＂ cultivar of aonla grown in laterite soil, planted at a spacing of 5m×5m. To find out the best pruning method, six levels of pruning was performed i.e., （1） Light judicious pruning, （2） Detopping of primary branches at 8 feet from ground level ＋ removal of all secondary branches, （3） Detopping of primary branches at 8 feet from the ground level ＋ removal of all secondary branches at 2 feet from the base of primary branches, （4） Detopping of primary branches at 8 feet from the ground level ＋ removal of all secondary branches at 1 feet from the base of primary branches, （5） Light judicious pruning ＋ Detopping of plant canopy of at 8 feet from the ground level, （6） No pruning （control）. Results of three consecutive years of investigation revealed that light judicious pruning of thin, overlapping, criss-crossed, dead, unproductive and looping branches gave highest fruit yield in all the three years and resulted 64.4 percent yield increment over control when average of three years was considered. Severe pruning of primary and secondary branches caused drastic reduction of yield for two consecutive years after pruning. Judicious pruning helped to produce better sizeable and quality fruits.

基于闭环理论的病理标本管理流程优化与实践

本研究依托闭环理论构建大型三级甲等医院病理标本管理流程,以保障病理标本准确、有效、及时送检,减少医疗安全隐患。案例医院通过完善组织管理、健全管理制度、应用闭环模式提供流程优化组织保障,结合基础质控、环节质控、终末质控构建全流程闭环追溯机制。闭环管理实施后,案例医院手术病理标本及时送检率提升至99.28%,病理标本相关不良事件发生率降低至0.003‰,异常病理报告通知率达到100%(P<0.01)。案例医院构建的病理标本管理流程有利于标本的全程追踪和动态管理,有效保障医疗质量和患者安全。

关闭/废弃矿井抽水蓄能开发利用现状与进展

探索清洁能源发展的创新途径是实现我国“双碳”目标的重要推动力。为解决大规模可再生能源电力供应不稳定的难题,新型电力系统的提出与加速成长促进了抽水蓄能电站的建设与发展,但生态保护与地形等因素制约了传统抽水蓄能电站发展。关闭/废弃矿井,由于具有丰富的地下空间及水资源,可创新性地开发抽水蓄能并延长矿区的经济寿命,降低对环境与经济的负面影响。为助力建立适合我国国情的废弃矿井抽水蓄能利用模式和管理体系,通过文献分析法综述了国内外废弃矿井抽水蓄能技术研究与应用进展。详细阐述了关闭/废弃矿井抽水蓄能技术原理、分类及其优缺点;总结了关闭/废弃矿井抽水蓄能电站利用模式,并在前人研究基础上对选址要素进行了修订;梳理了关闭/废弃矿井改建抽水蓄能电站的水-气两相流动特性、水泵水轮机工况特性、地下空间围岩稳定性及地下蓄水空间体积测算等的研究现状,明确了水泵-水轮机关键技术、地下空间稳定性控制关键技术等亟待解决的技术难题。此外,对关闭/废弃矿井抽水蓄能相关的生态与环境保护、市场需求与经济效益、政策与法规等研究成果进行了广泛的文献综述。发展关闭/废弃矿井地下空间抽水蓄能技术可为我国井下空间资源利用提供思路,为保障国家能源安全与经济社会高质量发展提供新途径。

多学科诊疗门诊现状与质量控制——以广西某三甲医院为例

多学科诊疗(MDT)门诊广泛应用于肿瘤、疑难危重复杂疾病及多病共存的患者诊疗。文章旨在研究在三级医院开展MDT门诊一站式就诊模式和诊后闭环管理,在实现医疗资源整合、优化就医流程、改善患者就医体验、保障医疗质量与安全方面起到重要作用。针对MDT门诊管理中职能部门重视不足、临床医师积极性不高、患者就诊主动性不强、MDT门诊信息化建设不完善、质量改进效果不佳等薄弱环节及质量控制难点,采取核心成员引领、配套激励考核机制、定期通报质量情况、完善信息化建设、延伸服务范围、加大宣传力度等有效管理手段持续改进,在提升病例病种数量、扩大品牌影响力、提高会诊质量方面取得了明显成效。

北京医院体外诊断试剂基于绩效管理的全流程闭环管理设计和效果评估

目的构建体外诊断试剂(in vitro diagnostic reagents,IVD reagent)全流程闭环管理方案并实施,优化IVD管理工作。方法基于北京医院IVD管理现状,设计IVD全流程闭环管理方案,包括IVD申请、IVD遴选、IVD申购、IVD采购、IVD领取、IVD入出库和IVD使用等环节。选择关键指标建立评估框架,运用访谈法、查阅相关信息系统的方法收集和统计方案实施前(2020年)和实施后(2023年)的管理数据、采购数据和检测数据,对流程管理、质量管理和成本管理进行评估。结果优化了管理流程,IVD申购时间平均缩短了约60%,IVD采购无需人工处理,实时拆分订单并发送至对应的供应商,IVD领取时间平均缩短了约75%;IVD和检测质量管理满意,供货商资质完善度达到100%,室间质评得到满分,无IVD相关不良事件;成本管理有效,IVD采购成本降低了约15%,分别建立了人免疫缺陷病毒抗体测定、丙型肝炎抗体测定、梅毒螺旋体抗体测定和乙型肝炎表面抗原定量测定四个项目的IVD成本精细化管理模型,IVD损耗的平均值为0.07%~1.21%,标准差为0.07%~0.66%。结论IVD全流程闭环管理方案切实可行,提高了IVD管理工作效率,保证了IVD质量和检测质量,降低了IVD成本,细化了成本管理工作。

What Happens after the Gap?— Size Distributions of Patches with Homogeneously Sized Trees in Natural and Managed Beech Forests in Europe

A novel but simple approach for describing stand structure in natural and managed forests driven by small-scaled disturbances is introduced. A primeval beech forest reserve in Slovakia and two beech stands in Germany with different management histories were studied, and their forest stand texture was analysed in terms of tree coordinates, stem diameter, and crown radius. Neigh-bouring trees of similar size with estimated contact of their crowns were assigned to tree groups. The study goal was to estimate the number and size of such homogeneous patches. In all cases, the number of tree groups in a particular diameter class decreased exponentially as group size increased. Single trees were predominant. Compared to simulated random tree distributions, the natural stand exhibited a more clumped distribution of small trees and more regular distribution of larger ones. The natural forest generally had smaller groups than the managed even aged stand, but the smallest group sizes were found in the uneven-aged selection forest. The simple analytical approach provided new spatial insights into neighbourhood relations of trees. The continuous scale from single trees to larger tree groups is an important achievement compared to other analytical methods applied in this field. The findings may even indicate a certain degree of self-organization in natural forests. Due to the limitations associated with each method or statistical models, a joint consideration of 1) gap dynamics, 2) forest developmental stages, and 3) size classes of homogeneous tree groups is recommended. Relevant to forest practitioners, the size class distributions enhance an understanding of the complex stand structures in natural forests and therewith support an emulation of natural forest dynamics in managed beech forests.

基于智慧物联技术住院部药品闭环可追溯管理模式建立与效果评价

目的介绍医院住院部药品调剂全流程可追溯闭环管理模式应用。方法依据智慧医疗建设思路和六级电子病历要求,从硬件和软件两方面入手,设计了住院部药品调剂全流程的无纸化模式,建立可追溯闭环管理体系,并对体系的实践效果进行全面评价。结果流程改造后,任务派领时间缩短,药品调配时间缩短,退药时间压缩,提高药师培训效率,降低人力耗材成本,促进安全合理用药。结论基于智能设备和信息化手段对医院信息系统进行改造,实现住院药品调剂全流程闭环式可追溯管理,具有安全、规范、高效、闭环可追溯的优势,降低调剂差错风险,提高用药安全性,可推广性强。

内镜病理标本管理系统的设计

目的完善内镜病理标本的收费管理体系,实现内镜病理标本的全过程可追溯信息化管理。方法通过业务流程再造,将原来人工记录环节电子化,从内镜病理标本采集开始到病理报告发布,通过信息系统的联合改造实现标本的医疗信息、管理信息、费用信息纳入到信息系统统一管理。结果实现了内镜病理标本的电子化管理,解决了信息传递过程中的标本标签简化、费用漏收、纸质化管理、过程不可追溯等关键问题。结论利用信息系统可以提高内镜病理标本的闭环管理效率,有效解决内镜病理标本漏收费问题,具有实际的应用价值。

土木工程学科博士研究生培养质量提升的体系构建研究

高层次人才培养和创新创造是研究生教育的重要使命。近期,多部门联合发文要求加快新时代研究生教育改革。只有按照“四个面向”为国家破解“卡脖子”技术,取得原创新科技成果才能成为国家战略科技力量。围绕“立德树人、服务需求、提高质量、追求卓越”的新发展思路,结合同济大学深化综合改革方案和建设世界一流大学的总体需要,对于土木工程学科博士研究生培养质量提升体系的构建进行研究,进一步突显人才培养的质量与内涵,着重强调课程和培养中间环节的质量保证和过程监督、研究生培养分流退出机制、学院和导师的主体责任,构建闭环管理体系以提升博士研究生培养质量。

基于闭环管理的医用耗材准入遴选管理实践与探讨

医用耗材作为医院开展诊疗活动必备的资源要素,具有品规多样、质量参差不齐、价格各异等特点。在DRG支付结算的大背景下,选择合适的医用耗材产品应用于临床,对医疗服务质量的提升、患者满意度的提高及医院的降本增效均有积极的促进作用。因此,准入遴选是医用耗材全生命周期管理的首要环节。该研究从医院医用耗材准入遴选的痛点和难点出发,运用闭环管理模式加强医用耗材遴选前的科学评估、公正招标、准入后建设监控评价退出机制管理。应用效果显示,实施基于闭环管理的医用耗材准入遴选管理模式后,医用耗材退货率、百元医疗收入消耗卫生材料费用、科室服务满意度均有改善(P<0.05),提高了医院医用耗材遴选质量,加强了耗材成本管控,提升了科室服务满意度。

基于人工智能的病历质控闭环系统应用与思考

目的为实现对电子病历全流程的全面质量控制,大型综合医院推出了基于人工智能的病历质控闭环系统。方法通过建立病历质控规则数据库,结合人工智能技术和闭环管理模式,形成智能化病历质控闭环系统。该系统包括事前提醒、事中实时监控与预警、事后反馈与改进以及多维度统计分析等。结果实现了病历质量控制全样本覆盖,与病历相关的质量指标稳步提升。结论人工智能病历质控闭环系统的应用显著提升了电子病历的质量和病案室的工作效率,提高了医院的精细化管理水平。

基于SERVQUAL模型的软式内镜闭环管理系统构建与应用评价

闭环管理是医疗器械精细化管理的内涵要求。通过无线物联网技术,结合现有内镜影像信息系统,构建总院与分院一体化软式内镜闭环管理系统,实现软式内镜使用前、中、后闭环管理,洗、消、用记录可追溯。运用SERVQUAL模型评价系统服务质量,有利于明确用户需求,持续改进系统功能,确保软式内镜使用安全。

运用消息平台技术构建危急值闭环管理系统的探索

本文介绍了通过消息平台技术构建危急值闭环管理系统的历程及特色,阐述了通过消息平台技术,融合医院相关管理制度逐步将危急值管理打造成连续、封闭的管理系统。系统借助消息平台技术,结合CDR数据,实现了危急值的多途径、多客户端消息通知推送,以及多重反馈的监督机制,满足了质控部门的管理需求,为危急值及时准确地送达临床医护人员提供了切实可靠的信息保障。

闭环式管理模式对门诊癌痛患者的护理效果评价

目的探索闭环式管理模式对门诊癌痛患者的镇痛效果及可行性。方法收集2019年12月—2020年6月在江苏省肿瘤医院镇痛门诊首诊并使用阿片类药物(羟考酮缓释片)进行镇痛治疗的癌痛患者112例为研究对象。按照组间基本特征具有可比性的原则将患者分为对照组和观察组,每组56例,对照组给予常规管理;观察组接受闭环式管理模式,包括对患者首诊、复诊、定期随访、宣教、用药记录、指导等,同期疼痛门诊专科医师、药师、护士对患者制订个体化规范、合理、有效的镇痛方案及随诊计划,重点解决患者镇痛用药依从性,随诊反馈中存在的问题。两组患者均接受持续1个月的管理,记录并比较两组患者管理前后的服药依从率、数字评分量表(NRS)、爆发痛次数、疼痛控制满意程度,外周血β-内啡肽(β-EP)、前列腺素E-2(PGE-2)、内皮素-1(ET-1)、体质状况(KPS)评分,记录两组患者管理后对护理满意程度及管理期间发生的不良反应。结果管理前,两组患者的服药依从率、NRS、爆发痛次数、β-EP、PGE-2、ET-1、KPS评分比较差异均无统计学意义(P>0.05);管理后,观察组患者的服药依从率、镇痛满意程度、β-EP、护理满意程度和KPS评分高于对照组,差异均有统计学意义(P<0.05)。观察组患者的NRS、PGE-2、ET-1和不良反应发生程度均低于对照组,爆发痛次数少于对照组,差异均有统计学意义(P<0.05)。结论闭环式管理模式可有效提升门诊癌痛患者服药依从,有效控制疼痛,改善患者体质。

以病案质控管理为目标的住院病历无纸化归档体系建设实践

目的:借助信息化手段提升病案质量和管理效率,实现住院病历归档的全生命周期智慧化管理。方法:以问题为导向,对某院病历归档管理流程进行深入调研与需求分析,通过建立无纸化归档闭环管理机制、文书完整性卡控机制、病案修改审核管理机制、可靠电子签名架构,构建以临床业务系统、归档系统、电子签名系统为一体的住院病历无纸化归档全流程闭环管理体系。结果:已实现24项医技报告、12种医护文书的无纸化归档,覆盖住院归档病历范围的90.00%以上,病历无纸化自动归档率96.13%,病历归档完整率达100.00%,杜绝了纸质病历缺张少页的安全隐患。结论:住院病历无纸化归档体系的建设,有效提升现代医院病案质控管理水平,进一步助力公立医院高质量发展。