scholarly journals Nondeterminacy and Reasonable Choice

2021 ◽  
pp. 143-161
Author(s):  
Anders Herlitz
Keyword(s):  
Ob Gyn News ◽  
2007 ◽  
Vol 42 (2) ◽  
pp. 7
Author(s):  
BRUCE JANCIN
Keyword(s):  

2019 ◽  
pp. 3-8
Author(s):  
N.Yu. Bobrovskaya ◽  
M.F. Danilov

The criteria of the coordinate measurements quality at pilot-experimental production based on contemporary methods of quality management system and traditional methods of the measurements quality in Metrology are considered. As an additional criterion for quality of measurements, their duration is proposed. Analyzing the problem of assessing the quality of measurements, the authors pay particular attention to the role of technological heredity in the analysis of the sources of uncertainty of coordinate measurements, including not only the process of manufacturing the part, but all stages of the development of design and technological documentation. Along with such criteria as the degree of confidence in the results of measurements; the accuracy, convergence, reproducibility and speed of the results must take into account the correctness of technical specification, and such characteristics of the shape of the geometric elements to be controlled, such as flatness, roundness, cylindrical. It is noted that one of the main methods to reduce the uncertainty of coordinate measurements is to reduce the uncertainty in the initial data and measurement conditions, as well as to increase the stability of the tasks due to the reasonable choice of the basic geometric elements (measuring bases) of the part. A prerequisite for obtaining reliable quality indicators is a quantitative assessment of the conditions and organization of the measurement process. To plan and normalize the time of measurements, the authors propose to use analytical formulas, on the basis of which it is possible to perform quantitative analysis and optimization of quality indicators, including the speed of measurements.


2015 ◽  
Vol 724 ◽  
pp. 74-78
Author(s):  
Guang Jun Hua ◽  
Wei Min Fei ◽  
Ze Shun Liao ◽  
Yong Xie

The application status of heavy duty corrugated paperboard and honeycomb fiberboard were reviewed. In order to contrast the edgewise compressive strength of the two typical sandwich fiberboards, the finite element models of honeycomb fiberboard and AAB flute corrugated fiberboard with large sample size were established. By numerical simulation method, the effect of structure on the edgewise compressive strength were decoupled from the factor such as the materials, material consumption, sample size and shape, processing technology and environmental conditions etc. Under the same material, material consumption and sample size, bulking analysis based on numerical method was carried out. The results show that the edgewise compressive strength of both sides of the honeycomb fiberboard is about 50% higher than that of AAB flute corrugated fiberboard, and honeycomb fiberboard is similar to bi-isotropic material. The conclusions obtained are valuable to reasonable choice of the honeycomb fiberboard and heavy duty corrugated fiberboard and correct understanding the mechanical properties of the two sandwich fiberboard.


2013 ◽  
Vol 361-363 ◽  
pp. 160-167
Author(s):  
Yun Liu ◽  
Li Li Chang ◽  
Chong Peng

Central China is progressively paving its way to the second carrier of Chinese population after the east coastal areas with disequilibrium theory as the guidance of provincial spatial development. Based on ESDA (exploratory spatial data analysis) with statistical data of GDP per capita of Hubei Province by county-level (2000-2010), this paper reveals the spatial differentiation characteristics of economic differences among counties in Hubei Province. According to global analysis of ArcGIS and GeoDA095i, economic space of the county presents the trend of climbing up and then declining. Besides, differences between counties are remarkable. The LISA clean-cut indicates different developed and underdeveloped districts. Finally, contrasting to policy response that the provinces cope with disequilibrium theory in Central China, the results show that the Central China continues to promote disequilibrium development is a reasonable choice, and it’s also indispensible to pay attention to controlling magnification of differences in regional development.


2012 ◽  
Vol 271-272 ◽  
pp. 705-709
Author(s):  
Hong Jiang Chen ◽  
Yue Hai Wu

Space grid structure of modern large span structure engineering in the most commonly used structure form. This paper used ANSYS network space truss finite element analysis, discuss the element type, and the selection of material models, and the definition of the limit stress, when necessary, even considering the bar buckling state ( buckling ). Under various load (permanent loads, wind loads, seismic loads, under the action of gravity ), using the powerful finite element analysis software ANSYS on the structure static analysis, after the use of ANSYS powerful optimization design function, the structure safety, the bar section optimization design, and then on the basis of the existing rod a cross section, a reasonable choice of bar section, reduce the material consumption, to achieve the best economic, reasonable design, implementation can develop continuously, make the satisfactory design.


Author(s):  
V.N. Anisimov ◽  
◽  
V.V. Anisimov

We showed that the development of recommendations for a reasonable choice of linear block copolyurethanes that would be optimal for given operating conditions is still intuitive and does not consider the features of the molecular structure and the nature of initial components. We suggested a new scientifically grounded approach to the creation of linear block-copolyurethanes with increased wear resistance in relation to strength, deformation, thermophysical and tribotechnical characteristics. To simplify analysis of the properties of the studied materials, a mathematical model was developed, which describes the relationship between all considered properties of materials and their structure. We proposed to assess the relationship between structure and properties of the investigated materials by using quality indexes. Maximum values of quality indexes, depending on the operating conditions, correspond to different contents of hard blocks (Pc), and, consequently, to different molecular structure of the studied polyurethanes. Thus, it is reasonable to use block-copolyurethanes based on OBGA500 with a maximum content of hard blocks (Рс>60%) for operating conditions where it is necessary to provide high strength characteristics. Polyurethanes synthesized with the formation of clusters of hard blocks in the range of 45–55% are recommended for the use as wear-resistant materials.


Author(s):  
X. Shi ◽  
L. Lu ◽  
S. Yang ◽  
G. Huang ◽  
Z. Zhao

For wide application of change detection with SAR imagery, current processing technologies and methods are mostly based on pixels. It is difficult for pixel-based technologies to utilize spatial characteristics of images and topological relations of objects. Object-oriented technology takes objects as processing unit, which takes advantage of the shape and texture information of image. It can greatly improve the efficiency and reliability of change detection. Recently, with the development of polarimetric synthetic aperture radar (PolSAR), more backscattering features on different polarization state can be available for usage of object-oriented change detection study. In this paper, the object-oriented strategy will be employed. Considering the fact that the different target or target's state behaves different backscattering characteristics dependent on polarization state, an object-oriented change detection method that based on weighted polarimetric scattering difference of PolSAR images is proposed. The method operates on the objects generated by generalized statistical region merging (GSRM) segmentation processing. The merit of GSRM method is that image segmentation is executed on polarimetric coherence matrix, which takes full advantages of polarimetric backscattering features. And then, the measurement of polarimetric scattering difference is constructed by combining the correlation of covariance matrix and the difference of scattering power. Through analysing the effects of the covariance matrix correlation and the scattering echo power difference on the polarimetric scattering difference, the weighted method is used to balance the influences caused by the two parts, so that more reasonable weights can be chosen to decrease the false alarm rate. The effectiveness of the algorithm that proposed in this letter is tested by detection of the growth of crops with two different temporal radarsat-2 fully PolSAR data. First, objects are produced by GSRM algorithm based on the coherent matrix in the pre-processing. Then, the corresponding patches are extracted in two temporal images to measure the differences of objects. To detect changes of patches, a difference map is created by means of weighted polarization scattering difference. Finally, the result of change detection can be obtained by threshold determining. The experiments show that this approach is feasible and effective, and a reasonable choice of weights can improve the detection accuracy significantly.


Author(s):  
Olena Koba ◽  

The purpose of the article is to determine the theoretical and organizational principles of application of accounting outsourcing by business entities. Methodology. Methods of analysis and synthesis were used to determine the characteristics and features of the organization of accounting outsourcing. The generalization of the existing experience of application of accounting outsourcing is carried out by a monographic method. On the basis of economic analysis and comparison, trends in the development of accounting outsourcing are identified. Methodology. The development of outsourcing is explained by its ability to increase the competitiveness of products, to promote the introduction of the latest advances in scientific and technological progress, to optimize costs. The application of knowledge and experience of specialists specializing in solving certain issues allows to focus the resources of companies on the development of strengths and promising areas and not to spend extra effort and money on the development of new non-core activities. The generalization of statistics on the current state of outsourcing in Ukraine shows that its effective application is hampered by the lack of free financial resources to invest in new management technologies, lack of awareness of business entities about the experience of outsourcing and the market of outsourcing services, lack of legal mechanisms. Generalization of functionally-oriented, cooperative, managerial, instrumental, integrated, situational, complex approaches gives grounds for outsourcing to understand the management tool, which allows to concentrate the resources of the business entity on the main activity, provides profit growth and increase competitiveness through contractual transfer, non-core functions of specialists or companies that specialize in their implementation and perform more efficiently than the entity. Among the advantages of outsourcing there are reducing the cost of accounting, improving service quality, accountability, confidentiality, tax optimization, reducing the likelihood of fraud by employees, ensuring impartiality and objectivity of accounting, access to additional resources in the field of finance, accounting and tax calculations. However, outsourcing has certain disadvantages, namely the risk of information leakage, possible lack of efficiency, formal performance of duties, liquidation of the outsourcing company, loss of control over own resources and part of the case may be lost, additional time to agree on the terms of the contract. Minimize the disadvantages of outsourcing allows careful and reasonable choice of outsourcing company, which should take into account: data privacy guarantee, staff qualifications, cost of services, reputation, popularity, experience of the outsourcer in the market, flexibility in organizing services, application of the latest technical solutions, outsourcing it has standards of interaction and internal procedures.


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