scholarly journals Functional requirements for the information model of a construction object life cycle

2019 ◽  
Vol 110 ◽  
pp. 02008 ◽  
Author(s):  
Elena Gusakova ◽  
Alexey Ovchinnikov
Keyword(s):  
Life Cycle ◽  
Information Model ◽  
Information Flows ◽  
Functional Requirements ◽  
Modeling Tools ◽  
Actual Object ◽  
Analysis And Design ◽  
Related Information ◽  
The Subject ◽  
Special Factors

In the context of the general trend to accelerate change, the life cycle of a construction object, analysis and design of its stages becomes an actual object of scientific research in the field of construction. The subject of the study becomes the information model of the life cycle of the building. It is studied and modeled on the basis of the concept of real estate development and using the methods of project analysis of the construction project. With the help of BIM-modeling tools, mandatory stages and possible phases of the life cycle of a building object can be represented as hierarchically and sequentially related information flows, in which the attributes of each stage of the life cycle are formed under the influence of the preceding stages and of special factors for the considered stage. On this basis, an analysis of the characteristics was carried out, and the structure of simple and complex construction works was developed, which allows determining for each stage of the life cycle of a construction object: interconnection of information flows, composition and content of the information model of the building required for the work of specialists.

scholarly journals Approaches to the structuring of the information model of the life cycle stages of a construction object

2019 ◽  
Vol 97 ◽  
pp. 01002 ◽  
Author(s):  
Elena Gusakova ◽  
Alexey Ovchinnikov ◽  
Andrey Volkov
Keyword(s):  
Life Cycle ◽  
Information Model ◽  
Information Modeling ◽  
Information Flows ◽  
Modeling Tools ◽  
Related Information ◽  
Project Analysis ◽  
Life Cycle Stages ◽  
Special Factors ◽  
Construction Works

In the context of the general trend to accelerate change, the actual goal of scientific research in the field of construction is to analyze and design the stages of the life cycle of a construction object. The object of the study becomes the information model of the life cycle of the building. It is studied and modeled based on the concept of real estate development and using the methods of project analysis of the construction project. The widest possibilities for obtaining and analyzing data on the state of a construction object, as well as the possibilities of systematizing information flows and information modeling of different periods of its life cycle, are realized in the approach of BIM modeling of buildings and structures. With the help of BIM-modeling tools, mandatory stages and possible phases of the life cycle of a building object can be represented as hierarchically and sequentially related information flows, in which the attributes of each stage of the life cycle are formed under the influence of the preceding stages and of special factors for the considered stage. As a result, the project documentation should reflect the decisions aimed at providing the necessary conditions and opportunities for subsequent periods of the life cycle of the construction object, as well as the most adapted for the predicted changes and transformations for all future stages and phases. The analysis of characteristics and the developed structure of simple and complex construction works allows determining for each stage and phase of the life cycle of a construction object: interconnection of information flows, composition and content of the information model of the building required for the work of specialists.

The Analysis and Design of Weighbridge Network Monitoring System Based on RFID

2011 ◽  
Vol 403-408 ◽  
pp. 3153-3157
Author(s):  
Lv Qing Yang ◽  
Hao Wang
Keyword(s):  
Life Cycle ◽  
Software Architecture ◽  
Monitoring System ◽  
Network Monitoring ◽  
Test Case ◽  
Test Results ◽  
Functional Requirements ◽  
Development Environment ◽  
Analysis And Design ◽  
Software Bugs

In accordance with the theory of software engineering life cycle and the process of project development, the paper designs and implementations the weighbridge network monitoring system based on RFID. Paper firstly describes the goal of building a system, analyzes the system's functional and non functional requirements. On this basis, the paper discusses the physical architecture, software architecture and development environment. Combined with interface technology such as RFID, infrared locator and anti-fraud monitoring and business process, this paper designs three-tier software architecture and key interface of the system. Finally, through the design and implement of the test case, the fix of the software bugs, this paper indicates that the system test results are reasonable and correct.

scholarly journals CAD integrated automatic recognition of weld paths

2021 ◽  
Author(s):  
Tuan Anh Tran ◽  
Andrei Lobov ◽  
Tord Hansen Kaasa ◽  
Morten Bjelland ◽  
Ole Terje Midling
Keyword(s):  
Life Cycle ◽  
Spatial Analysis ◽  
Product Life Cycle ◽  
Real Life ◽  
Automatic Recognition ◽  
Integrated Method ◽  
Weld Joints ◽  
Related Information ◽  
Almost All ◽  
Sequential Assembly

AbstractIn this paper, a CAD integrated method is proposed for automatic recognition of potential weld locations in large assembly structures predominantly comprised of weld joints. The intention is to reduce the total man-hours spent on manually locating, assigning, and maintaining weld-related information throughout the product life cycle. The method utilizes spatial analysis of extracted stereolithographic data in combination with available CAD functions to determine whether the accessibility surrounding a given intersection edge is sufficient for welding. To demonstrate the method, a system is developed in Siemens NX using their NXOpen Python API. The paper presents the application of the method to real-life use cases in varying complexity in cooperation with industrial partners. The system is able to correctly recognize almost all weld lines for the parts considered within a few minutes. Some exceptions are known for particular intersection lines located deep within notched joints and geometries weldable through sequential assembly, which are left as a subject to further works.

scholarly journals GMO Genetic Elements Thesaurus (GMO-GET): a controlled vocabulary for the consensus designation of introduced or modified genetic elements in genetically modified organisms

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Paulien Adamse ◽  
Emilie Dagand ◽  
Karen Bohmert-Tatarev ◽  
Daniela Wahler ◽  
Manoela Miranda ◽  
...  
Keyword(s):  
Genetically Modified Organisms ◽  
Genetically Modified ◽  
Controlled Vocabulary ◽  
Data Systems ◽  
Genetic Elements ◽  
Related Information ◽  
Detection And Identification ◽  
Unique Approach ◽  
The Subject ◽  
And Control

Abstract Background Various databases on genetically modified organisms (GMOs) exist, all with their specific focus to facilitate access to information needed for, e. g., the assistance in risk assessment, the development of detection and identification strategies or inspection and control activities. Each database has its unique approach towards the subject. Often these databases use different terminology to describe the GMOs. For adequate GMO addressing and identification and exchange of GMO-related information it is necessary to use commonly agreed upon concepts and terminology. Result A hierarchically structured controlled vocabulary describing the genetic elements inserted into conventional GMOs, and GMOs developed by the use of gen(om)e-editing is presented: the GMO genetic element thesaurus (GMO-GET). GMO-GET can be used for GMO-related documentation, including GMO-related databases. It has initially been developed on the basis of two GMO databases, i.e. the Biosafety Clearing-House and the EUginius database. Conclusion The use of GMO-GET will enable consistent and compatible information (harmonisation), also allowing an accurate exchange of information between the different data systems and thereby facilitating their interoperability. GMO-GET can also be used to describe genetic elements that are altered in organisms obtained through current targeted genome-editing techniques.

scholarly journals Sustainability Requirements of Digital Twin-Based Systems: A Meta Systematic Literature Review

2021 ◽  
Vol 11 (12) ◽  
pp. 5519
Author(s):  
Rui Carvalho ◽  
Alberto Rodrigues da Silva
Keyword(s):  
Life Cycle ◽  
Literature Review ◽  
Systematic Literature Review ◽  
Environmental Sustainability ◽  
Product Life Cycle ◽  
Data Communication ◽  
Three Dimensions ◽  
Digital Twin ◽  
The Subject ◽  
Reducing Costs

Sustainable development was defined by the UN in 1987 as development that meets the needs of the present without compromising the ability of future generations to meet their own needs, and this is a core concept in this paper. This work acknowledges the three dimensions of sustainability, i.e., economic, social, and environmental, but its focus is on this last one. A digital twin (DT) is frequently described as a physical entity with a virtual counterpart, and the data, connections between the two, implying the existence of connectors and blocks for efficient and effective data communication. This paper provides a meta systematic literature review (SLR) (i.e., an SLR of SLRs) regarding the sustainability requirements of DT-based systems. Numerous papers on the subject of DT were also selected because they cited the analyzed SLRs and were considered relevant to the purposes of this research. From the selection and analysis of 29 papers, several limitations and challenges were identified: the perceived benefits of DTs are not clearly understood; DTs across the product life cycle or the DT life cycle are not sufficiently studied; it is not clear how DTs can contribute to reducing costs or supporting decision-making; technical implementation of DTs must be improved and better integrated in the context of the IoT; the level of fidelity of DTs is not entirely evaluated in terms of their parameters, accuracy, and level of abstraction; and the ownership of data stored within DTs should be better understood. Furthermore, from our research, it was not possible to find a paper discussing DTs only in regard to environmental sustainability.

scholarly journals Integration of Emergy Analysis with Building Information Modeling

2021 ◽  
Vol 13 (14) ◽  
pp. 7990
Author(s):  
Suman Paneru ◽  
Forough Foroutan Jahromi ◽  
Mohsen Hatami ◽  
Wilfred Roudebush ◽  
Idris Jeelani
Keyword(s):  
Life Cycle ◽  
Building Materials ◽  
Building Information Modeling ◽  
Energy Analysis ◽  
Information Modeling ◽  
Environmental Cost ◽  
Emergy Analysis ◽  
Modeling Tools ◽  
Building Information

Traditional energy analysis in Building Information Modeling (BIM) only accounts for the energy requirements of building operations during a portion of the occupancy phase of the building’s life cycle and as such is unable to quantify the true impact of buildings on the environment. Specifically, the typical energy analysis in BIM does not account for the energy associated with resource formation, recycling, and demolition. Therefore, a comprehensive method is required to analyze the true environmental impact of buildings. Emergy analysis can offer a holistic approach to account for the environmental cost of activities involved in building construction and operation in all its life cycle phases from resource formation to demolition. As such, the integration of emergy analysis with BIM can result in the development of a holistic sustainability performance tool. Therefore, this study aimed at developing a comprehensive framework for the integration of emergy analysis with existing Building Information Modeling tools. The proposed framework was validated using a case study involving a test building element of 8’ × 8’ composite wall. The case study demonstrated the successful integration of emergy analysis with Revit®2021 using the inbuilt features of Revit and external tools such as MS Excel. The framework developed in this study will help in accurately determining the environmental cost of the buildings, which will help in selecting environment-friendly building materials and systems. In addition, the integration of emergy into BIM will allow a comparison of various built environment alternatives enabling designers to make sustainable decisions during the design phase.

Problems of Modeling Working Processes in Pneumohydraulic Systems and Units at Various Stages of the Product Life Cycle

2021 ◽  
pp. 60-75
Author(s):  
Y.V. Kyurdzhiev
Keyword(s):  
Life Cycle ◽  
Product Life Cycle ◽  
Dynamic Mode ◽  
Workflow Modeling ◽  
Pressure Regulator ◽  
Modeling Tools ◽  
Product Life ◽  
Current State ◽  
The Moment ◽  
Maintenance Requirements

The article presents the result of the analysis of the problems of maintenance of on-board pneumatic systems and units in terms of the requirements for completeness and efficiency of the requested information. It is shown that the current state of the workflow modeling tools of these systems do not fully meet the maintenance requirements at all stages of the product life cycle. An approach to modeling pneumohydraulic systems and units is proposed, as well as ways to reduce the time from the moment of setting a problem requiring the development of a new mathematical model to obtaining adequate simulation results. The efficiency of the proposed approach is demonstrated by the example of a pressure regulator operating in a dynamic mode. The possibilities and ways of implementing modeling tools based on the proposed approach are shown.

scholarly journals Variability in Pavement Design

2015 ◽  
Vol 16 (2) ◽  
pp. 50-67 ◽  
Author(s):  
Paola Dalla Valle ◽  
Nick Thom
Keyword(s):  
Pavement Design ◽  
Pavement Performance ◽  
Design Parameters ◽  
Probability Density Distribution ◽  
Analysis And Design ◽  
The Subject ◽  
The Mean ◽  
Subgrade Modulus ◽  
Input Variables ◽  
The Uk

Abstract This paper presents the results of a review on variability of key pavement design input variables (asphalt modulus and thickness, subgrade modulus) and assesses effects on pavement performance (fatigue and deformation life). Variability is described by statistical terms such as mean and standard deviation and by its probability density distribution. The subject of reliability in pavement design has pushed many highway organisations around the world to review their design methodologies, mainly empirical, to move towards mechanistic-empirical analysis and design which provide the tools for the designer to evaluate the effect of variations in materials on pavement performance. This research has reinforced this need for understanding how the variability of design parameters affects the pavement performance. This study has only considered flexible pavements. The sites considered for the analysis, all in the UK (including Northern Ireland), were mainly motorways or major trunk roads. Pavement survey data analysed were for Lane 1, the most heavily trafficked lane. Sections 1km long were considered wherever possible. Statistical characterisation of the variation of layer thickness, asphalt stiffness and subgrade stiffness is addressed. A sensitivity analysis is then carried out to assess which parameter(s) have the greater influence on the pavement life. The research shows that, combining the effect of all the parameters considered, the maximum range of 15th and 85th percentiles (as percentages of the mean) was found to be 64% to 558% for the fatigue life and 94% to 808% for the deformation life.

scholarly journals Cytological studies on the viruses of fowl-pox and vaccinia

1928 ◽  
Vol 102 (719) ◽  
pp. 406-418 ◽  
Keyword(s):  
Life Cycle ◽  
Infected Cell ◽  
Living Cells ◽  
Histological Technique ◽  
The Subject ◽  
Nuclear Structures ◽  
Source Of Error

Although, as is well known, the ultra-microscopic viruses are invisible in histological preparations, yet characteristic bodies occur within certain of the cells of animals infected with such organisms. The origin and nature of these so-called “virus bodies” has been the subject of much controversy. By some they have been regarded as the actual parasite, or at least as phases in its life cycle. To von Prowazek they were dual in character consisting of microorganisms embedded in material produced by the reaction of the cytoplasm of the infected cell. Still other observers regarded such bodies as products of cellular disintegration. In a former paper (Findlay and Ludford (1926)) we have referred to the various views held by writers in this field and have made a survey of the literature of the subject in the form of a pictographic review. We shall, therefore, only mention previous work in this field, in so far as it directly concerns our personal observations. A conspicuous fault of much of the earlier work has been the unsatisfactory histological technique employed, especially the nature of the fixative. The earlier cytological work was carried out with fixatives, which although satisfactory for the subsequent demonstration of nuclear structures were very destructive to the cytoplasm. This is particularly unfortunate since most of the virus bodies occur in the ground cytoplasm of cells. We have endeavoured to rectify this source of error in our work by employing fixatives, which have been proved to fix the cells in such a manner as to give an appearance as nearly as possible identical with their structure, as seen in the living cells.

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