Preface to Special Topic: Turbulence Physics and Control—Papers from a Workshop in Honor of John Kim's 60th Birthday, Stanford, California, September 2007

2008 ◽  
Vol 20 (10) ◽  
pp. 101501
Author(s):  
Haecheon Choi ◽  
Parviz Moin
Keyword(s):  
60Th Birthday ◽  
Special Topic ◽  
And Control

scholarly journals Converging infrastructures

2020 ◽  
Vol 29 (2) ◽  
pp. 10-51
Author(s):  
Christian Büscher ◽  
Michael Ornetzeder ◽  
Bert Droste-Franke
Keyword(s):  
Energy Transport ◽  
Interdisciplinary Approach ◽  
Special Topic ◽  
Technical Problems ◽  
Ability To Act ◽  
Individual Contributions ◽  
The Individual ◽  
And Control ◽  
Insight Into ◽  
Sector Integration

Converging infrastructures illustrate the complexity of the processes involved in both operational sector coupling and socio-technical sector integration. What consequences of this development can technology impact research estimate today and what difficulties will arise in doing so? This article introduces the TATuP special topic as well as the individual contributions and also addresses socio-political aspects, beyond the usual questions of technical feasibility and efficiency: What strategies are developed to initiate and control comprehensive change? What are the mechanisms to maintain the ability to act despite great uncertainties for all those concerned with future converging infrastructures for energy, transport, and heating/cooling. The interdisciplinary approach to the topic focuses on three central “socio-technical problems” and gives a first insight into the conditions under which converging infrastructures emerge and what consequences these processes might have.

scholarly journals Nonlinear Forecasting Model regarding Evolutional Risk of the PPP Project

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Wu Gao
Keyword(s):  
Case Analysis ◽  
Measurement Model ◽  
Special Topic ◽  
Project Risk ◽  
Multiple Variables ◽  
Risk Evolution ◽  
Nonlinear Regression Method ◽  
Cooperative Relationship ◽  
Multiple Impact ◽  
And Control

The special topic of this paper is to build a nonlinear measuring model between PPP project risk and multiple variables and test it through case analysis. Nonlinear regression method was used in this research to study the risk mutation of public-private partnership (PPP) projects without any significant events. Risk evolution is influenced by three factors which include (1) macroscopic environment, (2) micro environment, and (3) subject’s capacity and their cooperative relationship. First, it reveals three main drive variables of project risk evolution through case analysis. Second, it builds a nonlinear time-varying measurement model which is then transformed to a classical regression model. Lastly, it estimates and tests the model parameter by an example. The study shows that there is an integral negative correlation among the three independent variables within a certain threshold range, revealing macro environment as the most significant factor of project risk. Analyzing the complex relationship between multiple impact variables and risk evolution of PPP projects can provide a basic tool for forecasting and control of risk.

scholarly journals Amplified socio-technical problems in converging infrastructures

2020 ◽  
Vol 29 (2) ◽  
pp. 11-16
Author(s):  
Christian Büscher ◽  
Michael Ornetzeder ◽  
Bert Droste-Franke
Keyword(s):  
Energy Transport ◽  
Interdisciplinary Approach ◽  
Special Topic ◽  
Technical Problems ◽  
Ability To Act ◽  
Individual Contributions ◽  
The Individual ◽  
And Control ◽  
Insight Into ◽  
Sector Integration

Converging infrastructures illustrate the complexity of the processes involved in both operational sector coupling and socio-technical sector integration. What consequences of this development can technology impact research estimate today and what difficulties will arise in doing so? This article introduces the TATuP special topic as well as the individual contributions and also addresses socio-political aspects, beyond the usual questions of technical feasibility and efficiency: What strategies are developed to initiate and control comprehensive change? What are the mechanisms to maintain the ability to act despite great uncertainties for all those concerned with future converging infrastructures for energy, transport, and heating/cooling. The interdisciplinary approach to the topic focuses on three central “socio-technical problems” and gives a first insight into the conditions under which converging infrastructures emerge and what consequences these processes might have.

Control of Metal Alloy Oxidation with Electric Fields

1973 ◽  
Vol 31 ◽  
pp. 164-165
Author(s):  
R. R. Dils ◽  
P. S. Follansbee
Keyword(s):  
Electric Fields ◽  
Oxidation Process ◽  
Base Alloy ◽  
Oxide Surface ◽  
Platinum Electrodes ◽  
Insulating Layer ◽  
Iron Base Alloy ◽  
Alloy Oxidation ◽  
Aluminum Oxide Layer ◽  
And Control

Electric fields have been applied across oxides growing on a high temperature alloy and control of the oxidation of the material has been demonstrated. At present, three-fold increases in the oxidation rate have been measured in accelerating fields and the oxidation process has been completely stopped in a retarding field.The experiments have been conducted with an iron-base alloy, Pe 25Cr 5A1 0.1Y, although, in principle, any alloy capable of forming an adherent aluminum oxide layer during oxidation can be used. A specimen is polished and oxidized to produce a thin, uniform insulating layer on one surface. Three platinum electrodes are sputtered on the oxide surface and the specimen is reoxidized.

Evidence for a Blood Ganglion Barrier in the Superior Cervical Ganglion of the Rat

1982 ◽  
Vol 40 ◽  
pp. 204-204
Author(s):  
D. M. DePace
Keyword(s):  
Blood Vessels ◽  
Superior Cervical Ganglion ◽  
Peripheral Nerves ◽  
Time Schedule ◽  
Transmission Electron ◽  
Cervical Ganglion ◽  
The Central Nervous System ◽  
Cervical Ganglia ◽  
Capillary Circulation ◽  
And Control

The majority of blood vessels in the superior cervical ganglion possess a continuous endothelium with tight junctions. These same features have been associated with the blood brain barrier of the central nervous system and peripheral nerves. These vessels may perform a barrier function between the capillary circulation and the superior cervical ganglion. The permeability of the blood vessels in the superior cervical ganglion of the rat was tested by intravenous injection of horseradish peroxidase (HRP). Three experimental groups of four animals each were given intravenous HRP (Sigma Type II) in a dosage of.08 to.15 mg/gm body weight in.5 ml of.85% saline. The animals were sacrificed at five, ten or 15 minutes following administration of the tracer. Superior cervical ganglia were quickly removed and fixed by immersion in 2.5% glutaraldehyde in Sorenson's.1M phosphate buffer, pH 7.4. Three control animals received,5ml of saline without HRP. These were sacrificed on the same time schedule. Tissues from experimental and control animals were reacted for peroxidase activity and then processed for routine transmission electron microscopy.

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