scholarly journals Section III, Division 5: Development and Future Directions

2012 ◽  
Author(s):  
D. K. Morton ◽  
R. I. Jetter ◽  
James E. Nestell ◽  
T. D. Burchell ◽  
T.-L. (Sam) Sham
Keyword(s):  
High Temperature ◽  
Pressure Vessel ◽  
Nuclear Reactors ◽  
Fourth Edition ◽  
Future Directions ◽  
The Future ◽  
Near Term ◽  
Made In

This paper provides commentary on a new division under Section III of the ASME Boiler and Pressure Vessel (BPV) Code. This new Division 5 has an issuance date of November 1, 2011 and is part of the 2011 Addenda to the 2010 Edition of the BPV Code. The new Division covers the rules for the design, fabrication, inspection and testing of components for high temperature nuclear reactors. Information is provided on the scope and need for Division 5, the structure of Division 5, where the rules originated, the various changes made in finalizing Division 5, and the future near-term and long-term expectations for Division 5 development. Portions of this paper were based on Chapter 17 of the Companion Guide to the ASME Boiler & Pressure Vessel Code, Fourth Edition, © ASME, 2012, Reference [1].

The Future of Order

2020 ◽  
pp. 228-244
Author(s):  
Kyle M. Lascurettes
Keyword(s):  
United States ◽  
International Relations ◽  
The United States ◽  
International Order ◽  
First Century ◽  
Relative Power ◽  
The Future ◽  
Twenty First Century ◽  
Near Term

Chapter 9 (“The Future of Order”) reviews the empirical findings of the book and discusses their implications for the study of international relations. It then leverages these findings to address the two most important questions for international order in the twenty-first century: In the near term, what changes to the existing liberal order will the United States advocate as it continues to decline in relative power? And in the long term, what is its projected hegemonic successor, China, likely to do with the existing order when it finds itself in a position to fundamentally recast its underlying principles?

THINKING ABOUT THE FUTURE: A PSYCHOLOGICAL ANALYSIS

2007 ◽  
Vol 35 (7) ◽  
pp. 889-902 ◽  
Author(s):  
Bruce E. Tonn ◽  
Fred Conrad
Keyword(s):  
Global Warming ◽  
Older Individuals ◽  
Exogenous Variables ◽  
Web Based ◽  
Psychological Analysis ◽  
The Future ◽  
Endogenous Variables ◽  
Near Term

In this paper, the relationships between three endogenous variables – thinking about, worrying about, and imagining the future – and the relationships between these variables and a rich set of exogenous variables were explored. Data were collected via a web-based survey using a sample of convenience; 572 individuals from 24 different countries completed the survey. The results suggest that respondents think about the near-term future frequently and about the long-term future not at all frequently. Additionally, individuals who are better able to imagine the future think about the future more than those who cannot imagine the future well. Those who worry more about the future tend to think more about the future than those who do not. Older individuals think about the future less than younger individuals even though age is not correlated with worrying about or imagining the future. Christians think more about the future than others although they also tend to worry less about the future. Secularists are less able to imagine the future. Individuals who are worried about major issues like global warming tend to think more about the future. The results suggest that training individuals to better imagine potential futures could give them more confidence to think more and worry less about their futures.

Design Methodologies for High Temperature Reactor Structural Components Cladded With Noncompliant Materials

2019 ◽  
Author(s):  
B. Barua ◽  
V.-T. Phan ◽  
M. C. Messner ◽  
B. Jetter ◽  
T.-L. Sham ◽  
...  
Keyword(s):  
High Temperature ◽  
Base Material ◽  
Design Rules ◽  
Corrosion Resistant ◽  
Class A ◽  
Creep Fatigue ◽  
The Difference ◽  
Near Term ◽  
Term Creep

Abstract The existing Class A metallic materials qualified for ASME Section III, Division 5 rules for high temperature nuclear reactors, are not optimized for corrosion resistance when exposed to corrosive reactor coolants such as molten salts, and molten lead and lead-bismuth eutectic. Introducing new corrosion-resistant materials into the Code would be a lengthy and expensive process for long design lifetimes, requiring long-term creep test data. A near-term alternative solution might be to allow designers to clad the existing Class A materials with thin layer of some corrosion-resistant material. However, the current ASME Section III, Division 5 rules provide no guidance on evaluating cladded components against the Code creep-fatigue or strain limits requirements. This necessitates the development of design rules for cladded components that do not require long-term testing of clad materials. Depending on the difference in mechanical properties, the influence of clad on the long term response of the structural system can be significant or negligible. This work focuses on developing design rules for cladded components with a clad material that does not accumulate significant inelastic deformation compared to the base material. This work proposes to treat such clad materials as linear elastic. Sample calculations including finite element analyses of a representative molten salt reactor heat exchanger tube without and with clad were performed to verify the proposed approach. Finally, a complete set of design rules for components with noncompliant clad material is proposed.

The Role of Defense in Shaping U.S. Intelligence Reform

2010 ◽  
pp. 628-639
Author(s):  
James R. Clapper
Keyword(s):  
Critical Factor ◽  
Reform Movement ◽  
Future Directions ◽  
Policy Issues ◽  
Intelligence Reform ◽  
The Future ◽  
Defense Intelligence

This article discusses the intelligence-reform movement since the 9/11 attack. It particularly places emphasis on Defense Intelligence reforms. The article also explores the role of the Defense Intelligence in shaping and implementing law and executive guidance and policy. It also discusses how long-term, trusted relationships between key intelligence officials in place during 2007 to 2008 were a critical factor in events moving successfully through a number of contentious policy issues. The article ends with some views on the future directions of research in this field in order to bring the intelligence-reform movement to fruition.

scholarly journals Lyme Disease: In the “Lime Light” for Over 25 Years

2019 ◽  
Vol 1 (3) ◽  
pp. 1-9
Author(s):  
Kenisha J Evans ◽  
Eric Ayers ◽  
Cassandra E. Stinson ◽  
Arren E Simpson ◽  
Delisa Quayson
Keyword(s):  
Lyme Disease ◽  
Persistent Symptoms ◽  
Chronic Lyme Disease ◽  
The Future ◽  
The Difference ◽  
Made In

Lyme disease has been a topic of debate practically since its discovery in the 1970’s. The hot topic is whether or not long-term antibiotics should be used for Lyme disease patients with persistent symptoms. The source of such a long-running debate stems from the difference in opinions over the cause of long-term, persistent symptoms after treatment in some patients. Toward its end, Medicine has finally begun to embrace the existence of Chronic Lyme Disease, but changes still need to be made in the future.

scholarly journals Features of Time Perspective of Gifted Adolescents and their Peers

2017 ◽  
Vol 9 (1) ◽  
pp. 106-114 ◽  
Author(s):  
M.D. Kondratyev
Keyword(s):  
Time Perspective ◽  
Peer Group ◽  
Statistical Processing ◽  
Temporal Orientation ◽  
Study Results ◽  
The Future ◽  
Near Term ◽  
Study Participants ◽  
Gifted Adolescents

The article presents data from a study of features of time perspective of gifted adolescents and their coevals. The study involved 274 adolescent. To study the features of the time perspective of personality were chosen questionnaire time perspective Zimbardo (ZTPI), as well as processed according to the method of motivational induction J.Nuttin questionnaires with incomplete sentences and writings of the study participants. During the statistical processing of the data, it was found that gifted adolescents characterized by the following features: relatively high scores by type of temporal orientation "negative past" and "future". For a time the future prospects are characterized by: a relatively high frequency of references to objects motivational groups "Work", "Knowledge" (near-term); "Development", "Work" (long term). The length of the prospects for the future in a group of gifted adolescents is higher than the peer group. The study results will be useful for psychologists practitioners in working with adolescents.

scholarly journals High temperature alloys stability testing in impure helium

2018 ◽  
Vol 62 (1) ◽  
pp. 19-25
Author(s):  
J. Berka ◽  
D. Marušáková ◽  
J. Kalivodová
Keyword(s):  
High Temperature ◽  
Nickel Alloys ◽  
Nuclear Reactors ◽  
Corrosion Damage ◽  
Material Microstructure ◽  
Alloy 800 ◽  
High Temperature Alloys ◽  
Layer Composition ◽  
International Research Program

Abstract Within the national and international research program of materials for advanced nuclear reactors Czech organizations contributed with several tests of metallic alloys. The specimens of the alloys were first exposed in the long term (up to 1500 hours) in simulated advanced gas cooled reactor coolant environment at 750-900 °C. After exposure the degradation of tested materials was explored, especially changes in material microstructure, corrosion damage and corrosion layer composition and in some cases also changes in mechanical properties were observed. In this paper selected results of exposure tests in high temperature helium of alloy 800 H, austenitic steel 316L and high-temperature nickel alloys are presented.

The Future of Relational Aggression, and Final Remarks

2018 ◽  
Author(s):  
Jamie M. Ostrov ◽  
Sarah M. Coyne
Keyword(s):  
Longitudinal Studies ◽  
Relational Aggression ◽  
Future Directions ◽  
Key Points ◽  
The Future ◽  
Aggression Subtypes

The rapid escalation of research on the development of relational aggression and related constructs has been truly remarkable. Our volume is designed to fill a void in the literature and focus on the development of relational aggression. We conclude this volume by first reviewing some of the key points and implications from the prior chapters. Next, we discuss five future directions for the field: (1) conducting long-term longitudinal studies and adopting a lifespan perspective, (2) striving for advances in methods and technology, (3) using advanced statistics to address collinearity and co-occurrence among aggression subtypes, (4) exploring the role of other forms of aggression, and (5) embracing replication. Finally, we provide some concluding thoughts.

Development of Design Method for High Temperature Nuclear Reactor Cladded Components

2020 ◽  
Author(s):  
B. Barua ◽  
M. C. Messner ◽  
R. I. Jetter ◽  
T.-L. Sham
Keyword(s):  
High Temperature ◽  
Nuclear Reactor ◽  
Nuclear Reactors ◽  
Design Method ◽  
Base Material ◽  
Approximate Design ◽  
Design Rules ◽  
Corrosion Resistant ◽  
Class A

Abstract High temperature nuclear reactors plan to use highly corrosive coolant such as molten salts, molten lead, and lead-bismuth eutectic mixtures. The existing Class A metallic materials qualified in the ASME Section III, Division 5 rules for high temperature nuclear reactors are not ideal for resisting corrosion when exposed to these coolants. One option to overcome this limitation would be to Code-qualify new corrosion-resistant materials for Class A service, however this process is long and expensive and requires long-term creep test data. A near-term alternative would be to allow designers to clad the existing Class A base materials with non-qualified corrosion-resistant materials. However, there are currently no ASME design rules for cladded components to guard against creepfatigue failure and ratcheting strain accumulation in elevated temperature nuclear service. This work addresses this deficiency by proposing a design strategy for cladded components that does not require long-term testing of clad materials. The proposed approach relies on approximate design analysis methods for two types of clad materials — soft clad that creeps faster than the base material and hard clad that creeps slower and has higher yield stress than the base material. The proposed approach treats a soft clad material as perfectly compliant and a hard clad material as linear elastic. Sample finite element analyses of representative high temperature reactor components are performed to verify the approach. At the end, a complete set of design rules is provided for each of the two types of cladded components.

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