Similarities and Differences Between Control Systems in Engineering and Biology

2015 ◽  
pp. 2-6 ◽  
Author(s):  
F. S. Grodins
Keyword(s):  
Control Systems ◽  
Similarities And Differences

Human and Machine Stick Balancing

2007 ◽  
Author(s):  
Shigeru Tajima ◽  
Toru Ohira ◽  
Yukinori Tonosaki
Keyword(s):  
Random Walk ◽  
Control Systems ◽  
Psychological Factors ◽  
Simplified Model ◽  
Feedback Delay ◽  
Hunting Behavior ◽  
Machine Control ◽  
Similarities And Differences

We compared the similarities and differences in stick balancing for the human fingertip and that by a servo-controlled machine. The motion of the stick in both cases exhibited a swinging or hunting behavior, which appears to be related to feedback delay. However, human stick balancing appears also to be affected by psychological factors, such as attention, which are not present in machine control systems. We discuss how machine control systems compare with human stick balancing. We also discuss about the repulsive delayed random walk as a simplified model of the stick balancing.

scholarly journals Ribosome pausing, arrest and rescue in bacteria and eukaryotes

2017 ◽  
Vol 372 (1716) ◽  
pp. 20160183 ◽  
Author(s):  
Allen R. Buskirk ◽  
Rachel Green
Keyword(s):  
Quality Control ◽  
Protein Synthesis ◽  
Control Systems ◽  
Genetic Information ◽  
Ribosome Profiling ◽  
Molecular Events ◽  
Similarities And Differences ◽  
Ribosome Pausing

Ribosomes translate genetic information into polypeptides in several basic steps: initiation, elongation, termination and recycling. When ribosomes are arrested during elongation or termination, the cell's capacity for protein synthesis is reduced. There are numerous quality control systems in place to distinguish between paused ribosomes that need some extra input to proceed and terminally stalled ribosomes that need to be rescued. Here, we discuss similarities and differences in the systems for resolution of pauses and rescue of arrested ribosomes in bacteria and eukaryotes, and how ribosome profiling has transformed our ability to decipher these molecular events. This article is part of the themed issue ‘Perspectives on the ribosome’.

Orosensory Perception, Speech Production, and Deafness

1973 ◽  
Vol 16 (2) ◽  
pp. 257-266 ◽  
Author(s):  
Milo E. Bishop ◽  
Robert L. Ringel ◽  
Arthur S. House
Keyword(s):  
High School ◽  
Speech Production ◽  
Poor Performance ◽  
Normal Hearing ◽  
The Other ◽  
Functional Disorders ◽  
Form Discrimination ◽  
School Subjects ◽  
Oral Form ◽  
Similarities And Differences

The oral form-discrimination abilities of 18 orally educated and oriented deaf high school subjects were determined and compared to those of manually educated and oriented deaf subjects and normal-hearing subjects. The similarities and differences among the responses of the three groups were discussed and then compared to responses elicited from subjects with functional disorders of articulation. In general, the discrimination scores separated the manual deaf from the other two groups, particularly when differences in form shapes were involved in the test. The implications of the results for theories relating orosensory-discrimination abilities are discussed. It is postulated that, while a failure in oroperceptual functioning may lead to disorders of articulation, a failure to use the oral mechanism for speech activities, even in persons with normal orosensory capabilities, may result in poor performance on oroperceptual tasks.

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