scholarly journals Design techniques for large scale linear measurement systems

1979 ◽  
Author(s):  
J.V. Candy
Keyword(s):  
Large Scale ◽  
Linear Measurement ◽  
Measurement Systems ◽  
Design Techniques

Development and study of a method for cell separation during white blood cell segmentation on images of bone marrow preparations in information and measurement systems for diagnostics of acute leukemia

2020 ◽  
pp. 68-72
Author(s):  
V.G. Nikitaev ◽  
A.N. Pronichev ◽  
V.V. Dmitrieva ◽  
E.V. Polyakov ◽  
A.D. Samsonova ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Blood Cell ◽  
Acute Leukemia ◽  
White Blood Cell ◽  
Cell Separation ◽  
Large Scale ◽  
Bone Marrow Cells ◽  
Automated Analysis ◽  
Cell Segmentation ◽  
Measurement Systems

The issues of using of information and measurement systems based on processing of digital images of microscopic preparations for solving large-scale tasks of automating the diagnosis of acute leukemia are considered. The high density of leukocyte cells in the preparation (hypercellularity) is a feature of microscopic images of bone marrow preparations. It causes the proximity of cells to eachother and their contact with the formation of conglomerates. Measuring of the characteristics of bone marrow cells in such conditions leads to unacceptable errors (more than 50%). The work is devoted to segmentation of contiguous cells in images of bone marrow preparations. A method of cell separation during white blood cell segmentation on images of bone marrow preparations under conditions of hypercellularity of the preparation has been developed. The peculiarity of the proposed method is the use of an approach to segmentation of cell images based on the watershed method with markers. Key stages of the method: the formation of initial markers and builds the lines of watershed, a threshold binarization, shading inside the outline. The parameters of the separation of contiguous cells are determined. The experiment confirmed the effectiveness of the proposed method. The relative segmentation error was 5 %. The use of the proposed method in information and measurement systems of computer microscopy for automated analysis of bone marrow preparations will help to improve the accuracy of diagnosis of acute leukemia.

Relationship between Coordinate Transformation Uncertainty and Arrangement of Common Reference Points in Large-Scale Metrology

2017 ◽  
Vol 870 ◽  
pp. 309-314
Author(s):  
Jia Rui Lin ◽  
Yu Ren ◽  
Yin Guo ◽  
Yong Jie Ren ◽  
Ling Hui Yang ◽  
...  
Keyword(s):  
Coordinate Transformation ◽  
Large Scale ◽  
Transformation Process ◽  
Reference Points ◽  
Estimation Model ◽  
Individual Measurement ◽  
Coordinate Measurement ◽  
Measurement Systems ◽  
Common Reference ◽  
The Relationship

Large-scale coordinate measurement frequently involves unifying coordinate frames of individual measurement systems by aligning two sets of common reference points, which is called coordinate transformation. During this transformation process, some uncertainty is introduced into the final measurement results from common points. This paper studies the relationship between this introduced uncertainty and common points in order to minimize it. First, an uncertainty estimation model of coordinate transformation is developed to quantify the introduced uncertainty. Then the relationship between the introduced uncertainty and the arrangement of the common points is simulationally and experimentally investigated and some feasible and efficient arrangements are proposed in view of minimizing it.

Strategic Information Systems and Business Outcomes

2014 ◽  
Vol 5 (1) ◽  
pp. 15-25
Author(s):  
Alberto Bento ◽  
Regina Bento ◽  
Lourdes White ◽  
Ana Bento
Keyword(s):  
Technology Use ◽  
Large Scale ◽  
Strategic Information ◽  
Strategic Performance ◽  
Business Outcomes ◽  
Measurement Systems ◽  
Business Results ◽  
Wide Range ◽  
Performance Measurement Systems ◽  
Strategic Information System

This large-scale study of 1,990 responses from practitioners in a wide range of industries developed and tested a model of relationships among a specific type of strategic information system -- strategic performance measurement systems (SPMS) -- characteristics and business outcomes. Using as methodology path analysis and stepwise regression, we found that two SPMS characteristics (design purpose and information technology use), together with system effectiveness, explain close to 50% of the SPMS impact on business results.

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