scholarly journals The monitoring and control of TRUEX processes. Volume 1, The use of sensitivity analysis to determine key process variables and their control bounds

1992 ◽  
Author(s):  
M.C. Regalbuto ◽  
B. Misra ◽  
D.B. Chamberlain ◽  
R.A. Leonard ◽  
G.F. Vandegrift
Keyword(s):  
Sensitivity Analysis ◽  
Monitoring And Control ◽  
Process Variables ◽  
And Control

The Effect of Thermo-Mechanical Environment on the Shrinkage and Warpage in Thermoplastic Parts

2008 ◽  
Vol 587-588 ◽  
pp. 558-562 ◽  
Author(s):  
P.S. Alves ◽  
A.J. Pontes
Keyword(s):  
Material Properties ◽  
Injection Moulding ◽  
Data Acquisition System ◽  
Monitoring And Control ◽  
Process Variables ◽  
Mechanical Environment ◽  
Moulding Process ◽  
Injection Moulding Process ◽  
Mould Design ◽  
And Control

During the injection moulding process, the material is subjected to successive transformations, being submitted to a thermo-mechanical environment that determines the final dimensions of the part. This environment is characterized by several parameters which are related to material properties, the mould design, equipment and process variables. As a result, deviations of the dimensions of the moulded parts from the dimensions of the cavity cannot be avoided. If differences on shrinkage occur, caused for example by anisotropies of the material or non-uniform cooling, distortions will happen. In order to predict this two effects on the injection cycles is require one strategy to monitoring and control the process variables. The aim is to achieve highest quality control of all manufacture parts. This paper presents the effect of different holding pressures and mould temperatures on shrinkage and warpage in two different materials, one amorphous (PC) and another semi crystalline (PP). An instrumented mould was manufactured. During the injection moulding process sensors signals were continuously monitored by a Data Acquisition System. The experimental results were compared with predictions made by commercial software.

scholarly journals Control of construction projects using the Earned Value Method - case study

2019 ◽  
Vol 9 (1) ◽  
pp. 186-195
Author(s):  
Krystyna Araszkiewicz ◽  
Magdalena Bochenek
Keyword(s):  
Sensitivity Analysis ◽  
Key Management ◽  
Construction Projects ◽  
Monitoring And Control ◽  
Earned Value ◽  
Control Cost ◽  
Planning Stage ◽  
And Control ◽  
The Impact

AbstractPlanning, controlling, monitoring progress are key management functions for effective implementation of construction projects. Commonly used instruments enabling performance of these functions include schedules and budgets, often in the form of a cost estimate. They are created at the initial planning stage to monitor and control cost and time deviations. Moreover, popular monitoring techniques are, for example, observation of milestones and comparative analysis of actual versus planned costs. This article presents a work progress control tool - the Earned Value Method (EVM) - which, despite its benefits, remains relatively unused in construction projects. The impact of the planning phase on the results obtained during the monitoring and control phase when utilizing EVM is discussed. This case study provides practical examples of using EVM in the implementation of construction projects and with the use of computer software. The novelty of the article results from the introduction of additional sensitivity analysis illustrating the impact of factors, such as an increase in costs or a change in delivery dates to the course of deviation curves. Use of sensitivity analysis in relation to the results of the CPI and SPI calculations affords combining control of costs and time with risk monitoring in the project. The findings reveal significant benefits in using EVM to implement construction projects but also highlight some important limitations.

Computers for data, control and simulation

1988 ◽  
Vol 46 ◽  
pp. 920-921
Author(s):  
David C. Joy
Keyword(s):  
Personal Computers ◽  
Monitoring And Control ◽  
Data Logging ◽  
Data Logger ◽  
Operational Conditions ◽  
Data Control ◽  
The Many ◽  
And Control

Personal computers (PCs) are a powerful resource in the EM Laboratory, both as a means of automating the monitoring and control of microscopes, and as a tool for quantifying the interpretation of data. Not only is a PC more versatile than a piece of dedicated data logging equipment, but it is also substantially cheaper. In this tutorial the practical principles of using a PC for these types of activities will be discussed.The PC can form the basis of a system to measure, display, record and store the many parameters which characterize the operational conditions of the EM. In this mode it is operating as a data logger. The necessary first step is to find a suitable source from which to measure each of the items of interest. It is usually possible to do this without having to make permanent corrections or modifications to the EM.

The magnitude and cost of groundwater monitoring and control in agriculture.

2016 ◽  
Author(s):  
Giacomo Giannoccaro ◽  
Armando Ursitti ◽  
Maurizio Prosperi
Keyword(s):  
Groundwater Monitoring ◽  
Monitoring And Control ◽  
And Control

MONITORING AND CONTROL OF THE “ANIMAL” SUBSYSTEM IN THE COMPLEX BIOTECHNICAL SYSTEM “MAN-MACHINE-ANIMAL” OF A DAIRY FARM

2020 ◽  
pp. 4-10
Author(s):  
VLADIMIR V. KIRSANOV ◽  
◽  
DMITRIY YU. PAVKIN ◽  
FEDOR E. FEDOR E. VLADIMIROV ◽  
EVGENIY А. NIKITIN ◽  
...  
Keyword(s):  
Dairy Farm ◽  
Animal Husbandry ◽  
Reproductive Organs ◽  
Monitoring And Control ◽  
Lactating Cows ◽  
Research Activities ◽  
Mutual Adaptation ◽  
Biotechnical System ◽  
Complex Project ◽  
And Control

A modern dairy farm is a complex biotechnical “man-machine-animal” system, where purposeful human activity concentrates mainly on the control of the “machine” and “animal” subsystems, thus making the whole system ergatic. Increasing the interaction effi ciency of machine subsystems with biological objects (animals) requires an in-depth study of the properties and characteristics of the latter, their behavior, adaptive and refl ex mechanisms that ensure the mutual adaptation of machine and biological subsystems. The paper considers general functionality of the “animal” subsystem, which includes lists of monitored parameters (functions) in pre-weaning, pre-lactation and lactation periods. In a similar way, functionals of the subsystems of the general musculoskeletal development of the animal’s body, respiratory and digestive organs, comfort of the habitat, development and control of the reproductive organs of lactating cows were obtained accompanied with a list of controlled functions and parameters. To carry out a set of research activities in this fi eld, FSAC VIM is planning to carry out a complex project that will increase the levels of automation, digitalization and intellectualization of animal husbandry, provide for comfortable environment, optimal rediced-impact service modes for animals and their extended productive longevity, increased quality of milk and autonomous functioning of individual local biotechnical subsystems.

The Threats of Ukraine Financial Security: Identification and Systemization

2019 ◽  
pp. 73-80
Author(s):  
Oleksandra Maslii ◽  
Andrii Maksymenko ◽  
Svitlana Onyshchenko
Keyword(s):  
Financial Stability ◽  
System Development ◽  
Financial System ◽  
Economic Security ◽  
The State ◽  
Financial Security ◽  
Monitoring And Control ◽  
Development Indicators ◽  
Security Indicators ◽  
And Control

Place of monitoring and control of risks of financial stability of the state in the system of ensuring financial security of the state was substantiated. Methods of identifying threats to Ukraine's financial security through the current and strategic analysis of financial system development indicators were considered. Tendencies of economic development of Ukraine in the context of revealing sources of threats to financial stability of the state were analyzed. Dynamic analysis of the actual values of the financial security indicators of Ukraine as a whole and its separate components had been carried out. Threats to Ukraine's financial security were identified based on comparative and trend analysis. Reasons for the critical state of debt, banking and monetary security in the financial structure and the preconditions for the emergence of systemic threats had been investigated. Systematization of risks and threats to Ukraine's financial security by its components had been carried out. Influence of systemic threats in the financial sphere on the economic security of the state was generalized. International experience of monitoring financial stability of the state was analyzed. Additional risks to the national financial system are associated with the globalization and digitization of the state financial system that are not taken into account by valid methodological recommendations for calculating the level of economic security of Ukraine were highlighted.

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