Process Control Panel Design and Construction in the Seventies

1971 ◽  
Vol 4 (5) ◽  
pp. T80-T83
Author(s):  
S. A. E. Barrow
Keyword(s):  
Process Control ◽  
Integrated Design ◽  
High Density ◽  
Process Industry ◽  
Considerable Reduction ◽  
Control Panel ◽  
The Future ◽  
And Control ◽  
The Impact ◽  
Panel Design

The accent on centralised control has led to a considerable reduction in panel length by the use of high density instrumentation. Condensing the panel length introduces the problem of mounting back of panel equipment in a much reduced area. Several designs of control panels have been developed within the process industry and the paper reviews the various answers to this problem. One particularly successful integrated design is described and includes development, layout, fabrication, shop testing, transport, installation, maintenance and control house layout. The paper concludes with various improvements and innovations for the future and the impact of integrated panel design on manufacturers and users.

scholarly journals Views of the Future of Partners of People with Multiple Sclerosis Who Attended a Lifestyle Modification Workshop: A Qualitative Analysis of Perspectives and Experiences

2020 ◽  
Vol 18 (1) ◽  
pp. 85
Author(s):  
Sandra L. Neate ◽  
Keryn L. Taylor ◽  
Nupur Nag ◽  
George A. Jelinek ◽  
Steve Simpson-Yap ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Health Outcomes ◽  
Lifestyle Modification ◽  
Structured Interviews ◽  
Interpretive Phenomenology ◽  
Related Risk ◽  
The Future ◽  
Partner Perceptions ◽  
And Control ◽  
The Impact

People with multiple sclerosis (PwMS) often experience uncertainty and fear about their futures. Partners of PwMS may share their concerns and experience fears about their own futures, limitations on their lives, ability to work, and becoming a carer. For PwMS, modification of lifestyle-related risk factors has been associated with improved health outcomes. For PwMS who attended residential lifestyle modification workshops (RLMW), sustained improved health outcomes have been demonstrated. Whether improved outcomes for PwMS who engage with lifestyle modification translate to improved partner perceptions of the future, is yet to be explored. We explored the perspectives of partners of PwMS who had attended a RLMW and the impact that the person with MS’s illness and their engagement with lifestyle modification had on their partners’ views of the future. Analysis of 21 semi-structured interviews used a methodology informed by Heidegger’s Interpretive Phenomenology. Three themes emerged: ‘uncertainty’, ‘planning for the future’ and ‘control, empowerment and confidence’. Subthemes included MS and lifestyle modification being a catalyst for positive change; developing a sense of control and empowerment; and hope, optimism and positivity. Lifestyle modification may provide benefits, not only to PwMS, but also to their partners, and should be considered part of mainstream management of MS.

scholarly journals A Review of Influencing Factors on Spatial Spread of COVID-19 Based on Geographical Perspective

2021 ◽  
Vol 18 (22) ◽  
pp. 12182
Author(s):  
Zhixiang Xie ◽  
Rongqin Zhao ◽  
Minglei Ding ◽  
Zhiqiang Zhang
Keyword(s):  
Natural Environment ◽  
Prevention And Control ◽  
Research Progress ◽  
Driving Mechanism ◽  
Epidemic Spread ◽  
Spatial Spread ◽  
Factors Influencing ◽  
The Future ◽  
And Control ◽  
The Impact

The COVID-19 outbreak is a manifestation of the contradiction between man and land. Geography plays an important role in epidemic prevention and control with its cross-sectional characteristics and spatial perspective. Based on a systematic review of previous studies, this paper summarizes the research progress on factors influencing the spatial spread of COVID-19 from the research content and method and proposes the main development direction of geography in epidemic prevention and control research in the future. Overall, current studies have explored the factors influencing the epidemic spread on different scales, including global, national, regional and urban. Research methods are mainly composed of quantitative analysis. In addition to the traditional regression analysis and correlation analysis, the spatial lag model, the spatial error model, the geographically weighted regression model and the geographic detector have been widely used. The impact of natural environment and economic and social factors on the epidemic spread is mainly reflected in temperature, humidity, wind speed, air pollutants, population movement, economic development level and medical and health facilities. In the future, new technologies, new methods and new means should be used to reveal the driving mechanism of the epidemic spread in a specific geographical space, which is refined, multi-scale and systematic, with emphasis on exploring the factors influencing the epidemic spread from the perspective of spatial and behavioral interaction, and establish a spatial database platform that combines the information of residents’ cases, the natural environment and economic society. This is of great significance to further play the role of geography in epidemic prevention and control.

Monitoring Behavior and Process Control

1983 ◽  
Vol 27 (3) ◽  
pp. 224-228
Author(s):  
C.M.M. Hurts
Keyword(s):  
Process Control ◽  
Control Panel ◽  
Behavior Changes ◽  
Control Task ◽  
Presentation Modes ◽  
Eye Fixations ◽  
New Instrument ◽  
Machine Systems ◽  
And Control ◽  
Monitoring Behavior

As part of a research project concerned with the function of the human operator in semi-automated man-machine systems, the monitoring behavior of the operator carrying out a process control task was investigated. More specifically, a study was made of the way this monitoring behavior changes as a result of using new instrument types or different presentation modes on the control panel. In the present experiment, two display variables were used, the first one being continuous or intermittent presentation of the controlled variables. The second display variable was controlling with or without a predictor instrument. Other independent variables were type of control task and first or second half of the control task. Results show that subjects monitored the controlled variables with longer eye fixations if the predictor instrument was not available. Also, the controlled variables were monitored more frequently in the second half of the control task. However, both effects interacted significantly with type of task. These results are interpreted and discussed in relation to control performance and control task difficulty.

Process Control for Compression Systems

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Rainer Kurz ◽  
Klaus Brun
Keyword(s):  
Steady State ◽  
Process Control ◽  
Centrifugal Compressor ◽  
Variable Speed ◽  
Transient Conditions ◽  
Process Dynamics ◽  
And Control ◽  
The Impact ◽  
System Characteristics

This paper discusses the interaction between a centrifugal compressor and the process, and as a result, the control requirements for centrifugal compressor packages. The focus is on variable speed, upstream, and midstream applications. The impact of the interaction between system characteristics and compressor characteristics both under steady-state and transient conditions is explained. Also considered are the concepts to optimize and control the units. Special attention is given to the issue of surge avoidance. Additionally, the impact of the process and how the process dynamics interact with the compressor is analyzed, categorized, and explained.

scholarly journals Automation and the Future of Command and Control: The End of Auftragstaktik?

MCU Journal ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 127-146
Author(s):  
Rosario M. Simonetti ◽  
Paolo Tripodi
Keyword(s):  
New Technologies ◽  
Command And Control ◽  
Historical Perspectives ◽  
Control Functions ◽  
The Future ◽  
Strategic Leaders ◽  
And Control ◽  
The Impact ◽  
Generation Technology ◽  
Advisory Role

The impact of new technologies and the increased speed in the future battlespace may overcentralize command and control functions at the political or strategic level and, as a result, bypass the advisory role played by a qualified staff. Political and/or strategic leaders might find it appealing to pursue preemptive or preventive wars as a strategy to acquire asymmetric advantage over the enemy. This article investigates the roots of this trend, connecting historical perspectives with implications that next-generation technology may have on command and control.

Process Control for Compression Systems

2017 ◽  
Author(s):  
Rainer Kurz ◽  
Klaus Brun
Keyword(s):  
Steady State ◽  
Process Control ◽  
Centrifugal Compressor ◽  
Variable Speed ◽  
Transient Conditions ◽  
Process Dynamics ◽  
And Control ◽  
The Impact ◽  
System Characteristics

The paper discusses the interaction between a centrifugal compressor and the process, and as a result, the control requirements for centrifugal compressor packages. The focus is on variable speed, upstream and midstream applications. The impact of the interaction between system characteristics and compressor characteristics, both under steady state and transient conditions is explained. Also considered are concepts to optimize and control the units. Special attention is given to the issue of surge avoidance. Additionally, the impact of the process and how the process dynamics interact with the compressor is analyzed, categorized, and explained.

scholarly journals Impacts of COVID-19 on Informal Workers and National Policies in China

2021 ◽  
Vol 4 (4) ◽  
Author(s):  
Kadiriya Kaimaier ◽  
Yejia Zhang
Keyword(s):  
Informal Economy ◽  
Local Governments ◽  
Future Trend ◽  
Informal Workers ◽  
Epidemic Period ◽  
The Future ◽  
Set Up ◽  
And Control ◽  
Self Protection ◽  
The Impact

The impact of the epidemic on China's economy is huge. By analyzing the impact of the epidemic on the informal economy and consulting the measures taken by local governments in Sichuan to restore the stall economy in the post epidemic period, this paper classifies and refines the measures made by urban governments of different sizes of cities, puts forward relevant laws, and puts forward opinions and forecasts on the future trend of the stall economy and stall economy in the post epidemic period. Due to the impact of the epidemic, people's awareness of self-protection has increased, local governments have also strengthened prevention and control, and the business of vendors has been seriously affected. The Sichuan case shows that the government's encouragement is an important guarantee for the rapid recovery of the stall economy. At the same time, reasonable control is a necessary means to prevent the recurrence of the epidemic. For the future trend of the stall, it is a trend to set up permitted-vending-places (shudaoqu). Selecting an address according to the nature of the commodity is the guarantee of sales.

Suppressed, but Not Forgotten

2011 ◽  
Vol 70 (1) ◽  
pp. 5-11 ◽  
Author(s):  
Beat Meier ◽  
Anja König ◽  
Samuel Parak ◽  
Katharina Henke
Keyword(s):  
Memory Trace ◽  
Thought Suppression ◽  
Test Phase ◽  
Indirect Test ◽  
Final Test ◽  
Test Experiment ◽  
And Control ◽  
Cue Words ◽  
The Impact

This study investigates the impact of thought suppression over a 1-week interval. In two experiments with 80 university students each, we used the think/no-think paradigm in which participants initially learn a list of word pairs (cue-target associations). Then they were presented with some of the cue words again and should either respond with the target word or avoid thinking about it. In the final test phase, their memory for the initially learned cue-target pairs was tested. In Experiment 1, type of memory test was manipulated (i.e., direct vs. indirect). In Experiment 2, type of no-think instructions was manipulated (i.e., suppress vs. substitute). Overall, our results showed poorer memory for no-think and control items compared to think items across all experiments and conditions. Critically, however, more no-think than control items were remembered after the 1-week interval in the direct, but not in the indirect test (Experiment 1) and with thought suppression, but not thought substitution instructions (Experiment 2). We suggest that during thought suppression a brief reactivation of the learned association may lead to reconsolidation of the memory trace and hence to better retrieval of suppressed than control items in the long term.

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