Systems analysis of breath-to-breath ventilatory variations in man: Role of CO2 feedback

1992 ◽  
Vol 20 (2) ◽  
pp. 247-248
Author(s):  
Mohammad Modarreszadeh ◽  
Eugene N. Bruce
Keyword(s):  
Systems Analysis

scholarly journals Humean laws and explanation

2019 ◽  
Vol 23 (3) ◽  
pp. 373-385
Author(s):  
Barry Loewer
Keyword(s):  
Systems Analysis ◽  
David Lewis ◽  
Scientific Explanations ◽  
Primary Focus

My primary focus in this paper is on an objection to Humean account of laws and specifically to David Lewis’ “best systems analysis” (BSA). The objection is that the laws according to the BSA (which I call L-laws) fail to account for the ability of laws to explain. In contrast governing laws (which I will call G-laws) are alleged to account for the role of laws in scientific explanations by virtue of their governing role. If governing is required for laws to be explanatory then Humean accounts like Lewis’ are dead in the water since explanation is central to the role of laws in the sciences. However, I will argue that there are effective rebuttals to arguments that Humean laws don’t explain and that actually it is governing accounts that have difficulty with explanation.

What Should Simulations Simulate?

1983 ◽  
Vol 27 (12) ◽  
pp. 1006-1006
Author(s):  
R. A. Miller
Keyword(s):  
Computer Simulations ◽  
Systems Analysis ◽  
System Performance ◽  
Analysis And Design ◽  
Machine System ◽  
Systems Analysis And Design ◽  
Machine Systems

Both man-in-the-loop and computer simulations have become relatively mature technologies and are used quite extensively in human-machine systems analysis and design. As simulation becomes more mature and its application more routinized, the fundamental assumptions, both substantive and methodological, upon which simulations rest are sometimes neglected or forgotten. As a consequence some applications of simulation may be less than optimum and there may be some uncertainty surrounding the role which simulation can and should play in the human-machine systems domain. In this paper several types of simulations are classified according to the characteristics of the modelling performed and the representations used. These classes are briefly analyzed to establish some of the ontological and epistemological assumptions required in each class. The assumptions are then compared against the reasons and objectives usually cited for using simulation in human-machine systems work. This comparison provides useful insights into the role of simulation and enables some suggestions for needed work on modelling and theories of human-machine system performance.

scholarly journals Digitalization of Agriculture Sector in Japan

2020 ◽  
Vol 11 (4) ◽  
pp. 358-369
Author(s):  
K. S. Kostyukova
Keyword(s):  
Systems Analysis ◽  
Agricultural Sector ◽  
Digital Technologies ◽  
Digital Transformation ◽  
Agriculture Sector ◽  
Effective Implementation ◽  
Media Reports ◽  
The Government ◽  
Role Of The Government

Purpose: this article includes the review of the Japanese policy on the digital transformation transformation of the agricultural sector, description and analysis of the implementation cases, as well as identification of obstacles to achieve the expected results.Methods: the study uses the methods of structural, comparative and systems analysis and the principle of formal logic. The article is based on the analysis of scientific and analytical materials devoted to the problem of research. The factual basis is the framework documents of the Cabinet of Japan, media, reports of Japanese research institutes.Results: the article provides a brief review and analysis of the Japanese public of digital transformation of the agricultural sector, provides some cases, summarizes the interim results of the measures taken, identifies problematic factors that prevent the achievement of the expected results. The hypothesis is put forward about the key role of the government in the process of developing new standards for the digital transformation.Conclusions and Relevance: Japan agricultural sector is facing a severe labor shortage. The situation is expected to get worse in the next 5 years. The Japanese government expects that digital technologies and autonomous equipment will compensate for the lack of labor on farms, as well as provide a new stage in the development of the traditional agricultural sector. However, the digitalization of agriculture sector is not limited to the introduction of the latest technology, but also involves the development of new safety rules for the use of robotic tractors, unmanned aerial vehicles, improving farmers ICT education, and standardizing new agricultural terms. However, despite the promise of using digital technologies, the high cost of new equipment and the complexity of its use is a significant obstacle to the digitalization of agriculture in Japan. The study of the features of the digital transformation of the Japanese agricultural sector is very important for the effective implementation of industry projects that exist today in Russia.

scholarly journals Hierarchy theory in hydropedology

2009 ◽  
Vol 6 (2) ◽  
pp. 2931-2959 ◽  
Author(s):  
T. F. H. Allen ◽  
P. C. Allen ◽  
D. L. Wixon
Keyword(s):  
Complex Systems ◽  
Soil Water ◽  
Systems Analysis ◽  
Levels Of Analysis ◽  
Hierarchy Theory ◽  
Modeling And Analysis ◽  
Robust Integration ◽  
Soil Sciences

Abstract. The challenges that face scientists in the bourgeoning field of hydropedology include many of those that face investigations in complex systems. We suggest hierarchy theory as being particularly helpful in teasing through complexity in hydropedological investigations. We present a brief overview of hierarchy theory highlighting the importance of defining levels of analysis, the role of theory in prediction, and the importance of narrative in science. These concepts are highlighted by references from the hydropological literature. We point out several issues common to scientists faced with complex systems analysis, and suggest several strategies to help hydropedologists deal with them. In order to help bridge the gap between theory and application, we present several specific examples of how hierarchical treatments have helped scientists deal with the modeling and analysis of complex systems related to hydropedology. We conclude that hierarchy theory offers many powerful tools with which to tackle the complexity inherent in soil water interactions, and that its use would benefit a more systematic and robust integration of the hydrologic and soil sciences.

The role of bifidobacterium in the development of gut immune systems: analysis using gnotobiotic TCR-transgenic mice

2006 ◽  
pp. 93-99
Author(s):  
Masato Tsuda ◽  
Akira Hosono ◽  
Miran Fujioka ◽  
Satoshi Hachimura ◽  
Ryo Nakamura ◽  
...  
Keyword(s):  
Transgenic Mice ◽  
Systems Analysis ◽  
Immune Systems
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