PHYSICAL VALUE MAPPING ALGORITHM OF MESH IN FINE CAE ANALYSIS OF AUTOMOBILE BODY STRUCTURE

A physical value mapping （PVM） algorithm based on finite element mesh from the stamped part in stamping process to the product is presented, In order to improve the efficiency of the PVM algorithm, a search way from the mesh of the product to the mesh of the stamped part will be adopted. At the same time, the search process is divided into two steps： entire search （ES） and local search （LS）, which improve the searching efficiency. The searching area is enlarged to avoid missing projection elements in ES process. An arc-length method is introduced in LS process. The validity is confirmed by the results of the complex industry-forming product.

Value Analysis among the Parties on Imported Product in Indonesia Using Process Activity Mapping： Freight Forwarder, Distributor, and Retailer

National logistics system in Indonesia can be categorized as inefficient logistics system due to current number of non-value added （NVA） activities. The unreliable National logistics system and the complexity of distribution system are the big obstacles. This study aims to analyze the value and to propose recommendation for further improvement of National distribution system for imported product. This study employed convenience sampling through in-depth interview to analyze the activity in freight forwarder （FF）, distributor and retailer. To demonstrate and analyze the activity process in each party, Process Activity Mapping （PAM） was used as a tool. The study results showed that the delivery speed in Jakarta （8.4 min/km） is slower than that of Surabaya （6.6 min/km）. The government support through creating adequate infrastructure, good bureaucracy system and good collaboration directly affects the activities of FF, distributor and retailer. Improving FF performance in a timely and reliable manner is required to reduce errors that may occur. Moreover, encouraging the practice of cold chain management is also necessary in distributing the product throughout Indonesia. The pull strategy can be chosen by retailer to eliminate storage activity. Meanwhile, the use of information technology （IT） system is essential to encourage better inventory management, database management and sharing information in distributor and retailer stage.

Autonomous Vehicle Design in Lean Product Development Processes for Value Stream Map

The global automotive industry is giving a difficult and common test in order to create advanced life models in the near future plans or scenarios that include current autonomous vehicle technologies. Therefore, the main purpose of the research is to comparatively evaluate the impact of autonomous vehicle technologies, which are newly included in the automotive manufacturing industry under sustainable competition, on lean product development processes, value acquisition and preservation, in different organizational structures in the approach. Although mergers or brand acquisitions in the global automotive industry create joint R & D (Research Development) or joint new P & D (Product Development) process structures for the development of autonomous vehicle technologies, heavy competition continues in the market. These new processes create different needs for the merger and partnership of the renewed traffic infrastructures under national and international regulations, and for the implementation of the new autonomous life model. Firm and brand marriages, mergers or acquisitions in today’s automotive industry have ensured the high diffusion of lean product development processes under the stream of value creation or preservation carried out specific to the company under competition. Brand mergers in automotive industry companies struggling to survive under high competition create new work disciplines, professions, and engineering flow steps in lean product development processes. However, lean product development processes driven by technological innovation under simplification have resulted in the integration of parts and systems within the autonomous vehicle design structure, as well as creating new interdisciplinary value streams or different stakeholders. Therefore, the research revealed the significant effects of lean product development processes on the value stream in the automotive industry, on the mixed and lean product development process structure formed by new or existing vehicle systems (conventional vehicle) under the penetration of each existing and new discipline. This research compares the efficient operation steps of the process stakeholders in the autonomous vehicle design parts or systems containing innovation and new technology together with the value stream in the lean product development process, and the new process stakeholder’s business-oriented global and local automotive industry companies. New autonomous vehicle technologies, together with their unique software, hardware and development analysis, have been involved in the lean product development process with their interdisciplinary studies or expertise. Therefore, the study firstly focused on the technologies in environmental use together with the new basic features of autonomous vehicles, and then examined in depth the new or existing disciplines and interdisciplinary basic structure that these innovations affect under the value stream in the lean product development process. In addition, micro-level results and recommendations were shared, shedding light on how autonomous vehicle levels will create changes in the new product development process.

Analysis of Service Delivery Improvement of Manufactured Products with Lean Method Management

This study aimed to determine the waste that occurs in activities from receiving to delivering of finished products that can result in delays in the delivery of audio to Japan.The waste identified is limited to activities in the finished goods warehouse.The problem that occurs is the delay in product delivery,because the product is not ready to be delivered so that it causes delays.The lean approach is used to reduce waste in the overall work process activities in the finished goods warehouse.Waste identification was performed through the 7 waste approach.Process Activity Mapping is one of the tools of VALSAT,and is looking for critical waste to find the root cause of waste.Delay can be minimized by making improvements to the layout of the warehouse and routine inspection of goods transporters.Companies should use lean to reduce the waste that occurs so there is no delay in the delivery of audio products.

Framework of automated value stream mapping for lean production under the Industry 4.0 paradigm

For efficient use of value stream mapping(VSM)for multi-varieties and small batch production in a data-rich environment enabled by Industry 4.0 technologies,a systematic framework of VSM to rejuvenate traditional lean tools is proposed.It addresses the issue that traditional VSM requires intensive on-site investigation and replies on experience,which hinders decisionmaking efficiency in dynamic and complex environments.The proposed framework follows the data-information-knowledge hierarchy model,and demonstrates how data can be collected in a production workshop,processed into information,and then interpreted into knowledge.In this paper,the necessity and limitations of VSM in automated root cause analysis are first discussed,with a literature review on lean production tools,especially VSM and VSM-based decision making in Industry 4.0.An implementation case of a furniture manufacturer in China is presented,where decision tree algorithm was used for automated root cause analysis.The results indicate that automated VSM can make good use of production data to cater for multi-varieties and small batch production with timely on-site waste identification and analysis.The proposed framework is also suggested as a guideline to renew other lean tools for reliable and efficient decision-making.

Evaluation of Clinical Laboratory Tests’ Turnaround Time in a Tertiary Hospital in Democratic Republic of the Congo

The delay in the delivery of laboratory results can be fatal and can even lead to the death of patients. This study was conducted at the clinical laboratory of the University Hospital of Kinshasa (UHK) from October 2020 to April 2021, aimed to evaluate the laboratory tests’ turnaround time (TAT) and to identify reasons for delay. TAT was quantified using a time and motion analysis approach. The evaluation of TAT consisted of comparing the overall intra-lab TAT with the suggested TAT using student t-test at 95% confidence intervals. Brainstorming was the root cause analysis tool used for identifying reasons for delay. In this study, the laboratory tests’ TATs were significantly higher (p < 0.001) comparing to international guidelines (60 minutes) and customers’ suggested TAT (120 minutes). Only 0.98% of the samples were reported within 60 minutes of patient reception and 1.47% within 120 minutes, i.e. an outlier rate of 98.5%. Root causes of delay related to Machinery, Management, Manpower, Materials, Method and Milieu. Because of many reasons, the laboratory is not meeting the established TAT. Preventive and curative measures must be undertaken to reduce the delay and improve the TAT.

Variant Map System to Simulate Complex Properties of DNA Interactions Using Binary Sequences

Stream cipher, DNA cryptography and DNA analysis are the most important R&D fields in both Cryptography and Bioinformatics. HC-256 is an emerged scheme as the new generation of stream ciphers for advanced network security. From a random sequencing viewpoint, both sequences of HC-256 and real DNA data may have intrinsic pseudo-random properties respectively. In a recent decade, many DNA sequencing projects are developed on cells, plants and animals over the world into huge DNA databases. Researchers notice that mammalian genomes encode thousands of large noncoding RNAs (lncRNAs), interact with chromatin regulatory complexes, and are thought to play a role in localizing these complexes to target loci across the genome. It is a challenge target using higher dimensional visualization tools to organize various complex interactive properties as visual maps. The Variant Map System (VMS) as an emerging scheme is systematically proposed in this paper to apply multiple maps that used four Meta symbols as same as DNA or RNA representations. System architecture of key components and core mechanism on the VMS are described. Key modules, equations and their I/O parameters are discussed. Applying the VM System, two sets of real DNA sequences from both sample human (noncoding DNA) and corn (coding DNA) genomes are collected in comparison with pseudo DNA sequences generated by HC-256 to show their intrinsic properties in higher levels of similar relationships among relevant DNA sequences on 2D maps. Sample 2D maps are listed and their characteristics are illustrated under controllable environment. Visual results are briefly analyzed to explore their intrinsic properties on selected genome sequences.

Pseudo DNA Sequence Generation of Non-Coding Distributions Using Variant Maps on Cellular Automata

In a recent decade, many DNA sequencing projects are developed on cells, plants and animals over the world into huge DNA databases. Researchers notice that mammalian genomes encoding thousands of large noncoding RNAs (lncRNAs), interact with chromatin regulatory complexes, and are thought to play a role in localizing these complexes to target loci across the genome. It is a challenge target using higher dimensional tools to organize various complex interactive properties as visual maps. In this paper, a Pseudo DNA Variant MapPDVM is proposed following Cellular Automata to represent multiple maps that use four Meta symbols as well as DNA or RNA representations. The system architecture of key components and the core mechanism on the PDVM are described. Key modules, equations and their I/O parameters are discussed. Applying the PDVM, two sets of real DNA sequences from both the sample human (noncoding DNA) and corn (coding DNA) genomes are collected in comparison with two sets of pseudo DNA sequences generated by a stream cipher HC-256 under different modes to show their intrinsic properties in higher levels of similar relationships among relevant DNA sequences on 2D maps. Sample 2D maps are listed and their characteristics are illustrated under a controllable environment. Various distributions can be observed on both noncoding and coding conditions from their symmetric properties on 2D maps.

A Roadmap to Lean Production Implementation for Small Scale Nigerian Wire and Cable Companies

The increasing customers＇ demands in terms of speed of service and reduced cost at higher quality has generated a new platform on which manufacturing companies compete. This heightened challenge is virtually driving all manufacturing companies to introducing lean manufacturing principles into their production systems. This paper focuses on the analysis of the current state mapping of a case study and then proposes a future state mapping to the company. The extruder 60 production line of Denki wires and cables limited, Akure, Nigeria was carefully evaluated. Data were collected from actual operators on the shop floor and feedbacks from the customers at the Gemba. Denki＇s extruder 60 production line production lead time was massively reduced from 38.42 days to 5.16 days with a 12.86% waste reduction. At the end, a practical way of implementing this aspect of lean manufacturing was suggested.

基于电子鼻和气质联用分析萌芽大蒜挥发性物质差异

为探究萌芽期大蒜挥发性物质的差异,采用电子鼻、捕集阱顶空-气质联用仪(Trap head space-gas chromatography-mass spectrometry,HS-Trap-GC-MS)结合正交偏最小二乘法判别分析(Orthogonal partial least squares discriminant analysis,OPLS-DA)、香气活度值、差异性热图、相关性分析分析大蒜萌芽在0、24、48、72、96 h挥发性物质的差异。电子鼻结合OPLS-DA建立预测模型其预测能力达96.00%。GC-MS分析表明:含硫化合物是不同萌芽期大蒜的主要共有挥发性物质,含硫化合物的相对含量随萌芽时间的延长而呈递减趋势,而种类呈现出递增趋势;二烯丙基二硫醚是样品在萌芽过程中含量降低最多的物质。二烯丙基四硫醚、烯丙硫醇是样品共有关键化合物。差异性热图分析显示:除共有物质含量差异外,硫化丙烯、己醛、叠氮二羧酸二叔丁酯、丙烯醇、6-甲基-2-庚炔、5-甲基噻二唑、2-亚乙基-1,3-二硫烷、2-丙-2-炔基磺酰基丙烷、2,5-二甲基噻吩、2,5-二甲基呋喃、1-戊烯-3-醇、1,3-二噻烷的缺失进一步加大了未萌芽和萌芽大蒜气味的差异。萌芽大蒜主要共有挥发性物质的种类随萌芽时间的延长呈现递增趋势。大蒜主要挥发性物质与电子鼻大多数传感器存在显著相关性。大蒜的气味强度会随萌芽时间的延长而逐步减弱。

运用价值流分析实现急诊救治零跑动的实践与探讨

目的通过价值流分析来识别急诊诊疗过程中医患双方人力资源的隐性浪费,并利用信息等管理手段来提高急救时间的利用率。方法分析急诊抢救区非绿通患者、家属及医疗工作者的诊疗,确定时间浪费的爆发点,构建以急救区域为中心的信息、物流系统,并对比优化前后的结果。结果优化后患者用药时间、CT时间、检验时间、流程时间均较优化前缩短,时间有效率高于优化前,差异均具有统计学意义(p<0.05);医护人员流程PT、LT均较优化前缩短,时间有效率高于优化前,差异均具有统计学意义(p<0.05);家属跑动次数从6次降为0次;医护接触次数较优化前下降,患者满意度较优化前升高,差异均具有统计学意义(p<0.05)。结论利用价值流分析并构建的以急救区域为中心的信息、物流系统,减少医患双方劳动力的隐性浪费,提高急救时间的利用率。

基于价值流程图的急性肠系膜上动脉栓塞患者急诊术前院内流程现状分析

目的 调查急性肠系膜上动脉栓塞患者的救治流程患者急诊术前院内流程,并用价值流程图进行展示分析。方法 选取2022年1月—2023年1月某医院急诊入院治疗的10例急性肠系膜上动脉栓塞患者为研究对象。流程起始点为到达分诊台,结束点为进入手术室或介入中心。调查小组记录各个环节所用时间,绘制价值流程图。结果 急诊院内总流程时间为90~1 569 min,等待时间为30~526 min,工作时间为60~1 043 min,医师评估、家属参与决策、术前准备等待时间较长。结论 急性肠系膜上动脉栓塞患者的救治流程需要有大幅改善,亟待推广建设肠卒中绿色通道。

基于价值流图的注塑车间精益改善研究

应用价值流图分析L公司注塑车间产品不良率高、换型时间长、现场管理混乱和注塑加工时间长等问题。应用潜在失效模式与后果分析、快速换型、10S管理、ECRS原则和人机作业分析等技术对产品质量、换型时间、生产现场和注塑加工进行精益改善。Valeo连接器交货周期由22 d缩短至8.35 d,平衡率由35.7%提高至50.2%,不良品率由10%降至2%,换型时间由81.5 min缩减至45 min,注塑加工时间由28.5 s缩短至13 s,提高注塑机OEE 15.5%,现场秩序得到改善。

基于价值流程图的公立医院高值耗材成本与风险管控策略——基于A公立医院的案例研究

医用高值耗材作为公立医院成本高企和内控的薄弱点已日益成为国家整治的焦点。研究目的是旨在把价值流图这一先进的现代企业管理工具应用至公立医院高值耗材管控上,以匹配近年来国家对公立医院建立现代医院管理制度和增强内部控制的要求。围绕高值耗材事前、事中、事后全流程,通过对A医院应用价值流图前后进行对比分析,提出高值耗材源头管理、过程管理的有效闭环管控策略。

电气设备交货周期优化的精益改善分析方法

【目的】在制造企业进行“智改数转”时需要以流程优化为前提的背景下,针对电气设备交货周期过长的情况,设计了一种系统的精益改善分析方法。【方法】首先,对全生产周期内不同阶段的耗时因素进行建模;其次,基于多色集合理论提出了一种影响因素权重矩阵与影响力评估方法,以找出关键影响因素;最后,结合企业现状和改善目标确定精益改善路径并实施。【结果】利用此方法对N公司旗下T产品的生产流程进行精益改善,使其交货周期从19~25 d缩短为16~20 d,满足了T产品在3周内完成交货的精益改善目标。【结论】该精益改善实例印证了所提出方法的实用性与可行性。

基于价值流程图的急性心肌梗死患者急诊术前院内流程现状研究

目的分析急性心肌梗死患者急诊术前院内流程现状,并绘制价值流程图(VSM),为院内流程改善提供依据,以提高患者救治效率。方法选择2022年3月至2023年3月在我院救治的93例急性心肌梗死患者为研究对象。小组成员记录患者抵达急诊分诊台到被送入手术室或介入中心的每一个院内流程环节的时间。基于VSM的标准图标和已记录的时间信息,绘制急性心肌梗死患者急诊术前院内流程VSM。结果急性心肌梗死患者急诊术前院内工作时间(P/T)为14~71 min,等待时间(W/T)为6~262 min,总流程时间(L/T)为20~333 min,其中家属缴费、心电图检查、抽血送检、术前准备、家属参与决策、办理入院和患者入手术室或介入中心的等待时间较长。结论急性心肌梗死患者急诊术前院内流程仍有较大的优化空间,进一步优化急诊术前院内流程形成精细化管理,以提高医疗服务质量和急性心肌梗死的救治效率。

贸易壁垒与全球价值链参与的研究进展与展望——基于CiteSpace可视化知识图谱分析

贸易壁垒与全球价值链参与度的影响对于提高中国全球价值链参与度具有重要意义。本文运用CiteSpace可视化软件,以WOS数据库和CNKI数据库中收录的文献为研究对象,研究中外文贸易壁垒与全球价值链参与度领域文献发表情况与发表区域,并对该领域的研究热点进行分析。结果表明:(1)研究该主题的学者大多来自中国,目前美国和中国是研究贸易壁垒与全球价值链热度最高的国家;(2)在中英文贸易壁垒与全球价值链研究关键词频次最高的前十位中,外文对全球价值链研究较多,中文对贸易壁垒研究较多。结合贸易壁垒与全球价值链研究所呈现的研究现状,未来研究应加强学者及机构间的联系,并紧跟现实推进贸易壁垒和全球价值链的测算方法统一,促进全球价值链参与度的提升。

基于价值流图技术的锁体生产系统优化

以某锁体生产线为实际研究对象,开展了生产线现场调研,收集了大量数据,进行了锁体生产线的价值流分析,明确了该生产线的生产流程,绘制了价值流现状图。在对现行流程中的主要浪费———"过量生产"和"库存"的产生原因进行分析的基础上,基于精益思想设计了锁体生产线价值流的未来状态图,确定了以生产链方式的价值流动生产方式,以看板-超市方式控制生产和库存,并对相关的生产计划、生产线平衡、质量控制、设备等进行了优化和改进。项目实施后生产周期减少92.8%;库存减少92.8%。

价值流技术在产品生产系统优化中的应用

以学生课桌椅的生产过程为研究对象,运用价值流图技术对其进行研究。首先,通过对改善前产品生产过程进行工艺流程分析和现场数据测量,绘制出产品生产的价值流图,并找出其中存在的问题;然后,针对存在的问题,运用工业工程的相关方法,提出相应的改善措施,并绘制出改善后产品的价值流图。通过改善工位设备、车间布局和人员的调整,有效地减少了生产过程中非增值活动,并减少了在制品库存,缩短了交货周期,提高了加工效率。

基于价值流程图的动脉瘤性蛛网膜下腔出血患者急诊术前院内流程现状分析

目的通过对动脉瘤性蛛网膜下腔出血(aSAH)患者急诊术前院内流程的调查,分析出血性脑卒中患者院内流程现状,为流程优化提供直接依据。方法采用目的抽样法,选取2017年10月—2018年2月在首都医科大学宣武医院经急诊入院治疗的aSAH 32例患者为研究对象。从患者到达急诊分诊台开始计时,直至进入手术室或介入中心终止,小组成员跟踪全过程,记录各环节时间。依据价值流程图的通用图标及记录的时间数据绘制患者急诊术前院内流程的价值流程图。结果 aSAH患者急诊术前院内工作时间为9～104 min,等待时间为6～3 658 min,总流程时间为15～3 762 min,入手术室或介入中心、家属参与决策、术前准备、办理入院、抽血送检的等待时间较长。结论 aSAH患者急诊术前院内流程存在较大改进空间,加强多学科合作、精细化管理、人性化服务、启动绿色通道等是优化aSAH患者急诊术前院内流程的关键措施。