Planning of mining operations in the quality management mode based on geoinformation modeling

2021 ◽  
pp. 258-268
Author(s):  
I. M. Yakovlev
Keyword(s):  
Quality Management ◽  
Management Mode ◽  
Mining Operations ◽  
Geoinformation Modeling

scholarly journals Quality management of mined rock based on the use of mathematical modeling technologies

2020 ◽  
Vol 59 (3) ◽  
pp. 163-175
Author(s):  
Zinaida Mikhailovna NAZAROVA ◽  
◽  
Yuriy Vasil’evich ZABAIKIN ◽  
Yuliya Anatol’evna LEONIDOVA ◽  
Mikhail Arkad’evich YAKUNIN ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Quality Management ◽  
New Technologies ◽  
Quality Management System ◽  
Raw Materials ◽  
Production Capacity ◽  
Production Costs ◽  
Mining Equipment ◽  
Mining Operations

Relevance. Fracturing of the array is one of the main factors in the formation of quality blocks of decorative stone. Systems of natural cracks form a separate rock and determine the shape and size of structural blocks, which determines the possible output of conditioned block products from the array, the choice of the method of preparing the rock for excavation, the location and direction of movement of the mining front in accordance with the nature, intensity and elements of the occurrence of cracks. To control the quality of decorative stone blocks, modeling and forecasting optimal parameters, it is necessary to investigate the possibility of identifying fractures and then determining their geometric parameters using modern digital equipment. Purpose of research is to analyze the quality management of the extracted rock based on the use of mathematical modeling technologies. The methodology of the work consists in using methods of mathematical modeling, as well as statistical data processing. Results. The practical application of the results is to apply the developed methods in order to optimize the quality management system of the extracted rock and increase its efficiency. As a result of practical research, a rational ledge height of 5.8 m has been established for the conditions of the granodiorite Deposit, which allows to ensure the necessary production capacity of the quarry, high productivity of mining equipment, safety of mining operations, minimal economic costs for mining operations, low production costs and minimal losses of block raw materials. Conclusions. The analysis of the complex of mining operations of mining enterprises allows us to make a conclusion about the need to introduce new technologies into production that would ensure the automation of work, increase the reliability of measurement results and calculations. At the same time, automation should be based on the use of remote methods for assessing the quality of decorative stone, new electronic devices and appropriate software.

A Research on Quality Risk Controlling Principles and Methods in Automotive Products' Design Based on the Quality Gates

2014 ◽  
Vol 909 ◽  
pp. 141-147 ◽  
Author(s):  
Zhi Qiang Li
Keyword(s):  
Quality Management ◽  
Product Quality ◽  
Product Design ◽  
Management Mode ◽  
Design Quality ◽  
Quality Risk ◽  
Risk Controlling

Quality is the lifeline of business, and the key point of products quality is the product design quality. In recent years, the quality problems of car products have lingered on, and the large part is brought by the risk of product design quality. Beginning with quality gates, which is a world leading product quality management mode, this article is emphasized on the design quality risk controls principles and methods of car products.

Quality management in the prophylaxis of venous thrombembolism - Results of a survey including 464 medical and surgical patients

VASA ◽  
2011 ◽  
Vol 40 (2) ◽  
pp. 123-130
Author(s):  
Klein-Weigel ◽  
Richter ◽  
Arendt ◽  
Gerdsen ◽  
Härtwig ◽  
...  
Keyword(s):  
Renal Function ◽  
High Risk ◽  
Quality Management ◽  
High Risk Group ◽  
Surgical Patients ◽  
Medical Patients ◽  
Risk Status ◽  
Vte Prophylaxis ◽  
Safety Concerns

Background: We surveyed the quality of risk stratification politics and monitored the rate of entries to our company-wide protocol for venous thrombembolism (VTE) prophylaxis in order to identify safety concerns. Patients and methods: Audit in 464 medical and surgical patients to evaluate quality of VTE prophylaxis. Results: Patients were classified as low 146 (31 %), medium 101 (22 %), and high risk cases 217 (47 %). Of these 262 (56.5 %) were treated according to their risk status and in accordance with our protocol, while 9 more patients were treated according to their risk status but off-protocol. Overtreatment was identified in 73 (15.7 %), undertreatment in 120 (25,9 %) of all patients. The rate of incorrect prophylaxis was significantly different between the risk categories, with more patients of the high-risk group receiving inadequate medical prophylaxis (data not shown; p = 0.038). Renal function was analyzed in 392 (84.5 %) patients. In those patients with known renal function 26 (6.6 %) received improper medical prophylaxis. If cases were added in whom prophylaxis was started without previous creatinine control, renal function was not correctly taken into account in 49 (10.6 %) of all patients. Moreover, deterioration of renal function was not excluded within one week in 78 patients (16.8 %) and blood count was not re-checked in 45 (9.7 %) of all patients after one week. There were more overtreatments in surgical (n = 53/278) and more undertreatments in medical patients (n = 54/186) (p = 0.04). Surgeons neglected renal function and blood controls significantly more often than medical doctors (p-values for both < 0.05). Conclusions: We found a low adherence with our protocol and substantial over- and undertreatment in VTE prophylaxis. Besides, we identified disregarding of renal function and safety laboratory examinations as additional safety concerns. To identify safety problems associated with medical VTE prophylaxis and “hot spots” quality management-audits proved to be valuable instruments.

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