scholarly journals Usability Analysis of the Virtual Reality Techniques to Risk Assessment Made in the Course of Machinery Design Process / Badania Użyteczności Technik Rzeczywistości Wirtualnej Do Prowadzenia Oceny Ryzyka Przy Projektowaniu Maszyn

2012 ◽  
Vol 23 (1) ◽  
pp. 121-132
Author(s):  
Marek Dźwiarek ◽  
Tomasz Strawiński ◽  
Jarosław Jankowski

Abstract The scope of the project covers the development of a method for assessment of risk related to machinery, based on the computer-aided virtual reality technique. The investigations started with the formulation of the matrix of correspondence between the hazards and functions performed by the VR using document-based inspection method based on documentation of the 3 machines. Further investigations have been conducted by Expert Inspection method using virtual models of 3 machines. It was proved that the immersive projection technology were highly usable in the assessment of risk involved by mechanical hazards and arriving at more accurate results necessary for machine assessment in view of ergonomic then the HDM techniques. In further research the usability of the developed method will be investigated using the User Testing method.

Author(s):  
Yusuf Akhtar ◽  
Sarada Prasad Dakua ◽  
Alhusain Abdalla ◽  
Omar Mousa Aboumarzouk ◽  
Mohammed Yusuf Ansari ◽  
...  

2006 ◽  
Vol 4 (4) ◽  
pp. 479-486 ◽  
Author(s):  
Naoko Nakagawa ◽  
Hana Oe ◽  
Masahiro Otaki ◽  
Katsuyoshi Ishizaki

The Sustainable Sanitation System is a new wastewater treatment system that incorporates a non-flushing toilet (Bio-toilet) that converts excreta into a reusable resource (as fertilizer or humus for organic agriculture) and reduces the pollution load to environments of the rivers, the lakes, and the sea. However, the risk of exposure to pathogens should be considered, because excrement is stored in the Bio-toilet. The aim of the present work is to analyze the health risk of dealing with the matrix (excreta and urine mixed with sawdust) of the Bio-toilet. Therefore, the fate of pathogenic viruses was investigated using coliphages as a virus index, and the modeling of the die-off rate in matrix was introduced. Then the microbial risk assessment was applied to a Bio-toilet that was actually used in a residential house; the infection risks of rotavirus and enterovirus as reference pathogens were calculated. According to the lab-scale experiment using coliphages for investing the die-off rate of viruses in the Bio-toilet, Qβ had a higher die-off, which was greatly influenced by the water content and temperature. On the other hand, T4 showed a lower rate and was independent of water content. Therefore, these two phages' data were used as critical examples, such as viruses having high or low possibilities of remaining in the Bio-toilet during the risk assessment analysis. As the result of the risk assessment, the storage time required for an acceptable infectious risk level has wide variations in both rotavirus and enterovirus cases depending on the phage that was used. These were 0–260 days' and 0–160 days' difference, respectively.


2014 ◽  
Vol 2 (1) ◽  
pp. 77 ◽  
Author(s):  
Cícero André da Costa Moraes ◽  
Paulo Eduardo Miamoto Dias ◽  
Rodolfo Francisco Haltenhoff Melani

Purpose: Forensic facial reconstruction (FFR) is an auxiliary technique that approximates a face in order to generate identifications. Technological development allows access to open software that can be applied to FFR. The demonstrated protocol has features from creating 3D replicas of the skull to finishing and displaying the reconstruction. PPT GUI is used for 3D scanning, and the resulting point cloud is converted into a 3D mesh in MeshLab. The sculpture is made in Blender, according to the user’s preferred technique. The adaptation of the skin layer and finishing of the reconstruction is optimized with the use of templates. In this phase, details can also be hand-carved. Allied to basic training in the software featured in this protocol, the open access to these tools and its independence of imaging hardware other than digital cameras is an advantage to its application in forensic and research contexts.


2001 ◽  
Vol 25 (7) ◽  
pp. 250-252 ◽  
Author(s):  
Michael Campbell ◽  
Robert Chaplin

Aims and MethodsTo improve the rate of documentation of risk in new referrals to a community mental health team. A retrospective audit of 46 case notes was followed by a training session on risk of violence. The following 50 case notes were studied for changes in risk assessment.ResultsPrior to the study there were very low rates of documentation of risk of violence. Significant improvements were made in 45% of the items in the history and mental state although not in the formulation of a risk assessment statement.Clinical ImplicationsIt is possible to improve the risk of violence documentation with no extra time, resources or paperwork and with true multi-disciplinary involvement.


Author(s):  
Juan B. Bengoetxea ◽  
José L. Luján ◽  
Oliver Todt

RESUMENDesde la década pasada, en la evaluación de riesgos se ha propuesto utilizar la información mecanística con un doble propósito: seleccionar guías de inferencia y realizar extrapolaciones inter-químicas para establecer categorías de tóxicos. En este trabajo se utilizan aportaciones procedentes del análisis filosófico de las explicaciones mecanísticas para analizar el concepto de información mecanística utilizado en la evaluación de riesgos. Categorizamos la información mecanística de los modos de acción en términos de explicaciones etiológicas que emplean bosquejos de mecanismos. El grado de detalle que ha de incorporar la información mecanística en la evaluación de riesgos dependerá, entre otros factores, de consideraciones pragmáticas respecto del uso posterior de dicha información.PALABRAS CLAVEINFORMACIÓN MECANÍSTICA, EVAVALUACIÓN DE RIESGOS, MODELO, BOSQUEJO, EXPLICACIÓN.ABSTRACTSince the 2000s, in risk assessment studies it is usual to use mechanistic information with a double aim: to select inference guidelines and to make inter-chemical extrapolations to categorize toxics. Here, we use the contributions made in philosophical analysis of mechanistic explanations to analyze the concept of mechanistic information used in the risk assessment. We classify mechanistic information, specifically that concerning modes of action, in terms of etiological explanations employing sketches of mechanisms. The grade of the details that mechanistic information must incorporate to risk assessment depends on, among other factors, pragmatic considerations on the further use of such information.KEYWORDSMECHANISTIC INFORMATION, RISK ASSESSMENT, MODEL, SKETCH, EXPLANATION.


2013 ◽  
Vol 681 ◽  
pp. 256-259
Author(s):  
Xiu Qi Liu ◽  
He Qin Xing ◽  
Li Li Zhao ◽  
Dan Wang

In our study, a new kind of foam composite was prepared by melt blending with PVC as the matrix and carbon black (CB) as the filler, the standard-spline was made in the dumbbell system prototype. Tensile strength and elongation at break were measured at 25°C。When the CB was added greater than 2.0%, with the increase of CB added, the determination of sample mechanical index began to decline, when the CB content was greater than 9%, tensile strength and elongation at break of the composites remained basically unchanged.


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