48,509 research outputs found
Automated Generation of Geometric Theorems from Images of Diagrams
We propose an approach to generate geometric theorems from electronic images
of diagrams automatically. The approach makes use of techniques of Hough
transform to recognize geometric objects and their labels and of numeric
verification to mine basic geometric relations. Candidate propositions are
generated from the retrieved information by using six strategies and geometric
theorems are obtained from the candidates via algebraic computation.
Experiments with a preliminary implementation illustrate the effectiveness and
efficiency of the proposed approach for generating nontrivial theorems from
images of diagrams. This work demonstrates the feasibility of automated
discovery of profound geometric knowledge from simple image data and has
potential applications in geometric knowledge management and education.Comment: 31 pages. Submitted to Annals of Mathematics and Artificial
Intelligence (special issue on Geometric Reasoning
On systematic approaches for interpreted information transfer of inspection data from bridge models to structural analysis
In conjunction with the improved methods of monitoring damage and degradation processes, the interest in reliability assessment of reinforced concrete bridges is increasing in recent years. Automated imagebased inspections of the structural surface provide valuable data to extract quantitative information about deteriorations, such as crack patterns. However, the knowledge gain results from processing this information in a structural context, i.e. relating the damage artifacts to building components. This way, transformation to structural analysis is enabled. This approach sets two further requirements: availability of structural bridge information and a standardized storage for interoperability with subsequent analysis tools. Since the involved large datasets are only efficiently processed in an automated manner, the implementation of the complete workflow from damage and building data to structural analysis is targeted in this work. First, domain concepts are derived from the back-end tasks: structural analysis, damage modeling, and life-cycle assessment. The common interoperability format, the Industry Foundation Class (IFC), and processes in these domains are further assessed. The need for usercontrolled interpretation steps is identified and the developed prototype thus allows interaction at subsequent model stages. The latter has the advantage that interpretation steps can be individually separated into either a structural analysis or a damage information model or a combination of both. This approach to damage information processing from the perspective of structural analysis is then validated in different case studies
Realising the open virtual commissioning of modular automation systems
To address the challenges in the automotive industry posed by the need to rapidly manufacture more
product variants, and the resultant need for more adaptable production systems, radical changes are
now required in the way in which such systems are developed and implemented. In this context, two
enabling approaches for achieving more agile manufacturing, namely modular automation systems
and virtual commissioning, are briefly reviewed in this contribution. Ongoing research conducted at
Loughborough University which aims to provide a modular approach to automation systems design
coupled with a virtual engineering toolset for the (re)configuration of such manufacturing
automation systems is reported. The problems faced in the virtual commissioning of modular
automation systems are outlined. AutomationML - an emerging neutral data format which has
potential to address integration problems is discussed. The paper proposes and illustrates a
collaborative framework in which AutomationML is adopted for the data exchange and data
representation of related models to enable efficient open virtual prototype construction and virtual
commissioning of modular automation systems. A case study is provided to show how to create the
data model based on AutomationML for describing a modular automation system
Epidemiological and awareness study of tuberculosis in Batu Pahat, Johor, Malaysia
Tuberculosis (TB) remains one of the serious infectious diseases and has been
characterized worldwide as an epidemic by World Health Organization (WHO). TB
is still a public health problem in Malaysia. Baseline information on the disease
situation is one of the prerequisites for the development of appropriate control
measures. The cornerstone in proper management of TB patients is ensuring high
awareness in communities about TB. Thus the current research is directed to
investigate the epidemiology of TB, determined the level of public awareness of TB
and some factors that are responsible for the emergence of TB. Retrospective method
was used for collecting epidemiological data from the Batu Pahat chest clinic. All
registered TB patients (total of 1213 patients) from 2008 to 2013 in Batu Pahat Chest
Clinic were included in the study. On the other hand, the awareness study was
carried out by the use of questionnaires. A two-stage cluster sampling method was
used. 600 respondents were targeted which form the study sample. However, 498
questionnaires were returned. Descriptive data analysis was employed to describe the
results in frequency and percentage distribution. It was discovered that there was an
annually increase in TB incidence with pulmonary TB the most common infection in
Batu Pahat. Almost all (92.7%) the TB cases were new. On the other hand, majority
(87.0%) of respondents have heard about TB. Common symptoms identified by
respondents were coughing for over 2 weeks (51.8%), hemoptysis (49.2%) and
difficulty in breathing (50.2%). Smoking cigarette (74.3%), living with individual
having chronic cough (71.5%) and HIV/AIDS (65.7%) were the common risk factors
of TB identified by respondents. Most of the respondents (83.5%) were aware of the
existence of TB drugs. However, the standard DOTs treatment duration of 6-9
months was identified by few (12.4%) respondents. This research provided
information regarding TB status in Batu Pahat. The level of awareness among Batu
Pahat general public about TB is fairly good. Meanwhile, more need to be done
especially on diabetes as the risk factors of TB and treatment duration
Computational simulation for concurrent engineering of aerospace propulsion systems
Results are summarized for an investigation to assess the infrastructure available and the technology readiness in order to develop computational simulation methods/software for concurrent engineering. These results demonstrate that development of computational simulation methods for concurrent engineering is timely. Extensive infrastructure, in terms of multi-discipline simulation, component-specific simulation, system simulators, fabrication process simulation, and simulation of uncertainties--fundamental to develop such methods, is available. An approach is recommended which can be used to develop computational simulation methods for concurrent engineering of propulsion systems and systems in general. Benefits and issues needing early attention in the development are outlined
The Development and Implementation of New Technologies in Agri-Food Systems: The Case Study of Modularized Solution for Water Filtering Equipments
The outcomes of the evolution in the area of informatics, sensory science, data processing or non conventional technologies started to be transferred and successfully used in the field of the agro-industrial equipments and applications. The new generation of water filtering equipments is among them and the importance of the self-cleaning filtering battery is obvious. The system has to answer both to the requirements of industrial users as well as private users. A lot of work was done to improve the existing solutions with a new model which accomplishes the needs of the small users. The work is focused on this sector in the view of designing a modularized solution with a simple geometry which is able to incorporate the back-flushing valve, the filter and all the associate pipelines. Simultaneous these modules have to be easily connected for materializing the filtering batteries with two, three or more filters. The study presented in this paper is conducted in order to solve the problem of a part included in a hydraulic system – a self-cleaning filtering battery prototype. Further research has to be done in order to provide reliable information for long run strategies.Agricultural and Food Policy,
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