Littérature scientifique sur le sujet « Resilient Floor Covering Institute »

This special issue on ICT Based Disaster Resilient Society features ten articles resulting from a collaborative research project on natural disaster management conducted by the Kyoto University Disaster Prevention Research Institute (DPRI) researchers and information and communication technology (ICT) experts from Nippon Telegram and Telegraph Co. Ltd (NTT). For the last two years, they have been studying on how to make society more disaster resilient through proper ICT use focusing on cloud computing, the 20th century’s greatest invention. In part of a formal research partnership agreement signed in 2005, Kyoto University and NTT have been promoting new research in disaster management. The first two years showed with little concrete achievement beyond implementing one small research project - not exactly what the agreement envisioned. In 2008, volunteers from Kyoto University and NTT meeting to determine the reason found a tactical mistake - starting by picking projects collaboratively assuming that DPRI and NTT’s disaster management research section shared the same vision and understanding of disaster management. Fundamental differences in research focus also raised problems in finding suitable collaborative research activities. Briefly, at least three tiers existed for promoting ICT based disaster resilient society: 1) the ICT system infrastructure, 2) the operating system, and 3) individual applications in making society more disaster resilient. NTT was focusing on the first two tiers and DPRI on the last top tier. With this common understanding clarified, collaborative research was set in 2008 on ICT Based Disaster Resilient Society to formulate common ground between the two groups of researchers sharing a common operational picture. One result was a 2009 book from Nikkei BP Publications disseminating to the general public what disaster resilient society looks like, what can be done, and how to do it. This special issue goes one step further by delivering these research efforts to a worldwide audience. The first three articles, from the NTT group, describe the ICT basis for making society more disaster resilient, focusing on recent cloud computing advances as the projected venue for disaster management information systems. In article 1, Iwatsuki et al. introduce the autonomous, scattered, but coordinated network concept in a brief history of “Realization of Resilient Society with Information Technology Revolution.” Article 2 has Maeda et al. explained how the ICT system infrastructure, the next-generation network (NGN), provides better disaster management services in “Next Generation ICT Services Underlying the Resilient Society.” In article 3, Higashida et al. detail how organizational structures and information processing systems operate and are improved continuously through the NGN-based ICT infrastructure in “Risk Management and Intelligence Management During Emergency.” Six articles, from the DPRI group, deal with how ICT based information systems help calculate different damage due to different natural hazards, help strategically in compiling disaster management planning, and help implement effective emergency response and recovery. Kamai proposes how local communities can use land-slide databases offered through cloud computing in “Neural Network-Based Risk Assessment of Artificial Fill Slope in Residential Urban Region.” Fukuoka introduces an attempt to set up worldwide landslide databases in “Application of ICT to Contribution to Resilient Society Against Landslides.” Kobayashi et al. analyze the relationship between flooding and economic loss using detailed numerical simulation in “Development of a Framework for the Flood Economic Risk Assessment Using Vector GIS Data.” Chen et al. estimate possible impact of the Tokai-Tonakai-Nankai earthquake predicted in the 2030s taking into account Japan’s dwindling population from a disaster planning perspective in “Adapting the Demographic Transition in Preparation for the Tokai-Tonankai-Nankai Earthquake.” One objective of ICT based information infrastructures is to help society recover quickly from disaster impact through minimal damage and loss. Hatayama et al. introduce two risk-adaptive regional management information system (RARMIS) concept applications in “Implementation Technology for a Disaster Response Support System for Local Government.” Urakawa et al. introduce elaborated ICT based life recovery for disaster victims implemented in Kashiwazaki City, devastated by the 2007 Niigata Chuetsu-oki earthquake, in “Building Comprehensive Disaster Victim Support System.” The last article, “Risk Management for Hospitals Using the Incident Report,” reports wider collaborative research covering risk areas outside of natural hazards and the formulation of a research group going beyond DPRI. Takeda et al. introduce an ICT based system to help risk managers at Kyoto University Hospital by automatically analyzing medical incident reports. We editors would like to sincerely thank the Kyoto University and NTT collaborative researchers on ICT Based Disaster Resilient Society for their contribution and support. We would like to note with sincere appreciation that this publication is made possible in part by the support from “Special Project for Metropolitan Earthquake Disaster Mitigation in Tokyo Metropolitan Area (2007-2011)” by the Ministry of Education, Culture, Sports, Science, and Technology of Japan (MEXT). We also thank Wakai of Fuji Technology Press Ltd. for his dedicated compilation of this special issue.

The acoustic performance of a CLT based building mockup was investigated within the scope of AdivBois acoustic technical commission with the objective of defining wood building constructions fulfilling requirements. The CLT based building is a three floor construction, with four rooms on each level. Measurements from junction characterization to air-borne and impact sound insulations have been performed. Furthermore, acoustic measurements have been performed before and after linings and floor coverings were implemented. Moreover, several acoustic teams have carried out measurements in the building. This paper concentrates on the comparison between measured acoustic performance and the predicted one. Predictions are based on the EN ISO 12354-1 and -2 standards, using floor and wall acoustic performances measured in laboratory conditions. The effect of inserting resilient layers in junctions, floor covering and receiving room size is discussed.

近年來樓板緩衝材多以玻璃棉、橡膠墊或發泡類等工業化之產品為主，在製程或回收利用上亦須依賴大量能源之供應。因此，本研究在地球永續與循環經濟之課題下，以栓皮櫟（Quercus suber）樹種作為研究對象，利用木栓層（Cork layer）組織特性，開發木質有機緩衝材，並搭配複合木地板之面材進行樓板衝擊音隔音性能之探討。研究結果顯示，在栓皮櫟樹皮顆粒使用比例為30 %時，衝擊音降低量預估值達22 dB，較10 %及20 %之比例條件佳，且低頻衝擊音降低量數值較常見之橡膠發泡與PU發泡佳，顯示本研究之木質有機緩衝材除符合生態綠建材之原則外，亦可提升建築樓板之隔音性能。In recent years, glass wool, rubber, and foam were the main materials used in floor resilient material, which consume a lot of energy in the process of recycling. Under the topic of earth sustainability and circular economy, in this study, we took Quercus suber as the research object, and use the organizational characteristics of the Cork layer to develop wood organic resilient material. We discussed the floor impact sound insulation performance of laminate wood flooring and wood organic resilient material. The result showed when using 30 % cork oak, the impact sound reduction value of the floor covering was 22 dB. The impact sound insulation performance of low frequencies of wood organic resilient material was better than rubber and foam. The wood-organic resilient material produced in this study was in line with ecological green building materials and improved the sound insulation performance of building floors.

AbstractDue to ever faster changing market requirements, industrial production equipment needs to become much more flexible. For this reason, the Institute of Mechanical Handling and Logistics and the Institute of Electrical Energy Conversion are developing versatile, automated, and easily adaptable solutions to increase the flexibility of future intralogistics systems. As part of the ANTS 4.0 research project, a modular low-cost automated guided vehicle has been created, which breaks down the flow of goods into its smallest units: A small load carrier. The vehicle is prepared to be charged inductively and guided by color coded LED strips inside the floor, controlled from a superordinated artificial intelligence algorithm. In case of finding an obstacle by the object detection integrated in the floor, the route is recalculated and adapted in real-time.

Water Jet Peening (WJP) has been widely applied to nuclear power plants in Japan as one of mitigation techniques against Stress Corrosion Cracking (SCC) initiation [1]. WJP utilizes high pressure water flow including numerous cavitation bubbles and improves surface residual stress of susceptible materials used in reactor internals from tensile stress to compressive stress without significant plastic deformation, hardening, heating and furthermore retrieval of foreign materials. An inspection relief for the Primary Water SCC (PWSCC) concerned components, by means of peening technique application, has been discussed among PWR owners in the US for about last 10 years. The topical report on PWSCC mitigation by surface stress improvement (Material Reliability Program (MRP)-335, revision 3-A) was published through the above activities by Electric Power Research Institute (EPRI) MRP [2]. The target components, where PWSCC is concerned, are listed as Reactor Pressure Vessel Head Penetration Nozzles (RPVHPNs), such as Control Rod Drive Mechanism Nozzle (CRDMN), and dissimilar metal welds (DMWs) of Reactor Coolant System (RCS) nozzles, and performance criteria for peening are defined in the topical report. Moreover, the technical basis for PWSCC mitigation by surface stress improvement (MRP-267, revision 2) was published by EPRI MRP [3].The report details numerous data for each peening technique which show the effectiveness in mitigating the PWSCC initiation and its sustainability, i.e. state of stress. The report also includes the process control; covering nozzle diameter, water flow rate, application time, jet stand-off, impingement angle and stationary nozzle time for WJP [3]. RPVHPNs inner diameter (ID), such as CRDMN ID, is in narrower areas than the other target components of peening techniques. Hence the WJP nozzle should be set appropriate condition, e. g. sufficient stand-off distance or angle of the WJP nozzle, in line with the MRP-267 in order to ensure the stress improvement effect by WJP. Further, the reactor pressure vessel head, which has the RPVHPNs including the CRDMNs, is placed on the refueling floor and under atmosphere condition during outage, and therefore, the CRDMNs have to be filled with water by plugging etc. for WJP application on CRDMN ID. Thus the CRDMN ID becomes a closed narrow chamber. In such a closed narrow chamber, water flow might become complex and disturb the cavitation collapse on the target surface, resulting in decreased stress improvement. Additionally, WJP has been rarely applied in a narrow closed water chamber, and only a few residual stress measurement data are available for such a WJP treated specimen. For the above reason, we has conducted a WJP test utilizing the water chamber and measured the residual stress of the test coupon simulating the CRDMN ID before and after WJP application as our own research. As a result, an improvement in residual stress was ensured even in an application of WJP in a closed narrow water chamber, which assumes CRDMN ID configuration, and created a depth over the performance criteria (0.01” (0.25 mm) in depth) stated in MRP-335 [2]. As an another applicability study, we developed a WJP tool for Bottom Mounted Instrument (BMI) Nozzles and confirmed that the residual stress of BMI ID and Outer Diameter (OD) can be improved . The background of this study is that BMI nozzle is under discussion for inspection relief as one of the components which are concerned about PWSCC. Especially, BMI ID is narrow area for WJP application; on the other hand it does not need to become a closed chamber since the reactor pressure vessel, which has the BMI Nozzles on the bottom head, is filled with water during outage. As a result, it is ensured that the residual stress for BMI ID and OD is improved by WJP to a depth of at least 0.2mm which is deeper than the performance criteria for the depth of compressive residual stress of Austenitic Stainless Steel in Japan (3.9 × 10−3” (0.1mm) in depth).