Risk Assessment of the Debris Flow Gully in Tibet Southeast

Risk assessment of debris flow is the core content and decision-making basis for debris flow disaster forecasting and the disaster prevention work. It is a comprehensive analysis for the geological, climate, rainfall, historical disaster activities and human engineering activities in some certain areas which may be in danger conditions, so as to determine the occurrence probability of debris flow. In this study, risk assessment model of the debris flow gully in Tibet southeast area is established. According to the correlation ratio of risk assessment indexes and the debris flow occurrence, the assessment indexes can be divided into three levels and defined with some certain values according to the correlation of debris flow occurrence. Finally, the risk assessment of debris flow gully in Tibet southeast area is conducted, and model outputs achieve a good result.

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Adaptive Construction of the Virtual Debris Flow Disaster Environments Driven by Multilevel Visualization Task

ISPRS International Journal of Geo-Information ◽

10.3390/ijgi8050209 ◽

2019 ◽

Vol 8 (5) ◽

pp. 209 ◽

Cited By ~ 2

Author(s):

Yunhao Zhang ◽

Jun Zhu ◽

Weilian Li ◽

Qing Zhu ◽

Ya Hu ◽

...

Keyword(s):

Risk Assessment ◽

Debris Flow ◽

Emergency Response ◽

Dynamic Scheduling ◽

Single Type ◽

Prototype System ◽

Disaster Prevention ◽

On Demand ◽

Task Requirements ◽

Debris Flow Disaster

The construction of a virtual debris flow disaster environment is of great significance in debris flow disaster prevention, risk assessment, accurate simulation, and disaster emergency response. However, existing research on virtual disaster environments mainly focus on the specific visualization task requirements of single-type users, and the multilevel visualization task requirements of multitype users are generally not met. In this paper, an adaptive construction method for virtual debris flow disaster environments driven by multilevel visualization task is proposed based on the characteristics of users with different professional knowledge backgrounds and requirements in disaster emergency response scenarios. The on-demand construction of virtual debris flow disaster environments and the corresponding diverse organization and dynamic scheduling technologies are discussed in detail. Finally, the Qipan Gully debris flow disaster is selected for experimental analysis, and a prototype system is developed. The experimental results show that the proposed method can adaptively construct virtual debris flow disaster environments according to the multilevel visualization task requirements of multitype users in debris flow disaster emergency response scenarios. This approach can provide efficient rendering of disaster scenes and appropriate disaster information to multitype users who are involved in debris flow disaster emergency response scenarios.

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A Review of Study on Chinese Debris-Flow Risk Assessment

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.3405 ◽

2012 ◽

Vol 204-208 ◽

pp. 3405-3408 ◽

Cited By ~ 1

Author(s):

Jun Wang ◽

Shun Yang ◽

Xian Jun Ji ◽

Guo Qiang Ou

Keyword(s):

Risk Assessment ◽

Debris Flow ◽

Wenchuan Earthquake ◽

Disaster Planning ◽

Assessment Model ◽

Risk Assessment Model ◽

Territorial Planning ◽

5.12 Wenchuan Earthquake ◽

Post Disaster ◽

Research Situation

Debris-flow risk assessment plays an important role in territorial planning and hazard prevention and alleviation, especially after 5.12 Wenchuan Earthquake, it can provide guidance for post-disaster restoration and reconstruction. Based on plenty of references, such as monograph, journal, thesis and other document, this paper summarized the present research situation of Chinese debris-flow risk assessment, put forward that the current debris-flow risk assessment model is not suitable for earthquake-stricken areas and urgently need to establish a new risk assessment model to guide post - disaster planning and reconstruction.

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Risk Assessment of the Debris Flow Gully in Tibet Southeast by Set Pair Analysis Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.522-524.930 ◽

2014 ◽

Vol 522-524 ◽

pp. 930-934

Author(s):

Pei Qing Wang ◽

Jiang Xu ◽

Wen Wu Ye ◽

Shuai Jie Guo

Keyword(s):

Risk Assessment ◽

Debris Flow ◽

Evaluation System ◽

Assessment Process ◽

Set Pair Analysis ◽

Analysis Method ◽

Analysis Model ◽

Core Content ◽

Debris Flow Disaster ◽

Pair Analysis

Risk assessment of debris flow is the core content for debris flow disaster forecasting and prevention work. And then, risk assessment of debris flow also becomes the key method in potential debris flow hazards forecast. However, kinds of hazard-affected indictors will be referred during the risk assessment process. In this study, set pair analysis model for risk assessment of the debris flow gully in Tibet southeast is established. With the model final outputs, it can successfully solve the problem of considering all the weight values of the hazard-affected indictors in debris flow evaluation system. Finally, risk assessment of typical debris flow gullies in Tibet southeast area are conducted out by the set pair analysis model, and the model outputs also give a well agreement to the actual.

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Assessment of the Risk of Debris Flows in Zhouqu County, South Gansu Province, China

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.955-959.1617 ◽

2014 ◽

Vol 955-959 ◽

pp. 1617-1621 ◽

Cited By ~ 1

Author(s):

He Ping Shu ◽

Gang Wang ◽

Peng Zhang ◽

Jin Zhu Ma

Keyword(s):

Risk Assessment ◽

Debris Flows ◽

Vulnerability Index ◽

Gansu Province ◽

Assessment Model ◽

Ecological Environment ◽

Risk Assessment Model ◽

Disaster Prevention ◽

Regional Risk Assessment ◽

Gis Software

The hazards of debris flows and the vulnerability to these flows were used as a basis for risk assessment in Zhouqu County, southern Gansu Province, China. The GIS software was used to perform a regional risk assessment for each township in Zhouqu County with a 250 m×250 m spatial resolution. The vulnerability of the population, the economy, and the ecological environment were accounted to develop a comprehensive vulnerability index for each township. A risk assessment model was used to develop a risk zoning map for Zhouqu County. It is found that the areas with the highest risk were mainly distributed in Chengguan, Dongshan, Jiangpan, Dachuan, and Guoye townships. Based on the results of the study, the recommendations for disaster prevention and mitigation were proposed.

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Risk assessment model for venous thromboembolism in hospitalized surgical and non-surgical patients in the 4th Hungarian Antithrombotic Guidelines entitled “Diminution and Treatment of Venous Thromboembolism”

Orvosi Hetilap ◽

10.1556/oh.2010.28944 ◽

2010 ◽

Vol 151 (34) ◽

pp. 1365-1374 ◽

Cited By ~ 1

Author(s):

Marianna Dávid ◽

Hajna Losonczy ◽

Miklós Udvardy ◽

Zoltán Boda ◽

György Blaskó ◽

...

Keyword(s):

Risk Assessment ◽

Venous Thromboembolism ◽

Assessment Model ◽

Surgical Patients ◽

Risk Assessment Model

A kórházban kezelt sebészeti és belgyógyászati betegekben jelentős a vénásthromboembolia-rizikó. Profilaxis nélkül, a műtét típusától függően, a sebészeti beavatkozások kapcsán a betegek 15–60%-ában alakul ki mélyvénás trombózis vagy tüdőembólia, és az utóbbi ma is vezető kórházi halálok. Bár a vénás thromboemboliát leggyakrabban a közelmúltban végzett műtéttel vagy traumával hozzák kapcsolatba, a szimptómás thromboemboliás események 50–70%-a és a fatális tüdőembóliák 70–80%-a nem a sebészeti betegekben alakul ki. Nemzetközi és hazai felmérések alapján a nagy kockázattal rendelkező sebészeti betegek többsége megkapja a szükséges trombózisprofilaxist. Azonban profilaxis nélkül marad a rizikóval rendelkező belgyógyászati betegek jelentős része, a konszenzuson alapuló nemzetközi és hazai irányelvi ajánlások ellenére. A belgyógyászati betegek körében növelni kell a profilaxisban részesülők arányát és el kell érni, hogy trombózisrizikó esetén a betegek megkapják a hatásos megelőzést. A beteg trombóziskockázatának felmérése fontos eszköze a vénás thromboembolia által veszélyeztetett betegek felderítésének, megkönnyíti a döntést a profilaxis elrendeléséről és javítja az irányelvi ajánlások betartását. A trombózisveszély megállapításakor, ha nem ellenjavallt, profilaxist kell alkalmazni. „A thromboemboliák kockázatának csökkentése és kezelése” című, 4. magyar antithromboticus irányelv felhívja a figyelmet a vénástrombózis-rizikó felmérésének szükségességére, és elsőként tartalmazza a kórházban fekvő belgyógyászati és sebészeti betegek kockázati kérdőívét. Ismertetjük a kockázatbecslő kérdőíveket és áttekintjük a kérdőívekben szereplő rizikófaktorokra vonatkozó bizonyítékokon alapuló adatokat.

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Signature Analysis: Statistical Models and Their Application to FA

ISTFA 1996: Conference Proceedings from the 22nd International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa1996p0183 ◽

1996 ◽

Author(s):

C.K. Lakshminarayan ◽

S. Pabbisetty ◽

O. Adams ◽

F. Pires ◽

M. Thomas ◽

...

Keyword(s):

Risk Assessment ◽

Failure Analysis ◽

Statistical Models ◽

Essential Elements ◽

Assessment Model ◽

Signature Analysis ◽

Risk Assessment Model ◽

Sample Sizes ◽

Reliability Engineering ◽

Semiconductor Chips

Abstract This paper deals with the basic concepts of Signature Analysis and the application of statistical models for its implementation. It develops a scheme for computing sample sizes when the failures are random. It also introduces statistical models that comprehend correlations among failures that fail due to the same failure mechanism. The idea of correlation is important because semiconductor chips are processed in batches. Also any risk assessment model should comprehend correlations over time. The statistical models developed will provide the required sample sizes for the Failure Analysis lab to state "We are A% confident that B% of future parts will fail due to the same signature." The paper provides tables and graphs for the evaluation of such a risk assessment. The implementation of Signature Analysis will achieve the dual objective of improved customer satisfaction and reduced cycle time. This paper will also highlight it's applicability as well as the essential elements that need to be in place for it to be effective. Different examples have been illustrated of how the concept is being used by Failure Analysis Operations (FA) and Customer Quality and Reliability Engineering groups.

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