36 CFR 1280.22 - Is gambling allowed on NARA property?

Code of Federal Regulations, 2010 CFR

2010-07-01

...? Prohibited Activities § 1280.22 Is gambling allowed on NARA property? (a) No, you may not participate in any type of gambling while on NARA property. This includes: (1) Participating in games for money or other... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Is gambling allowed on NARA...

36 CFR 1280.22 - Is gambling allowed on NARA property?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false Is gambling allowed on NARA...? Prohibited Activities § 1280.22 Is gambling allowed on NARA property? (a) No, you may not participate in any type of gambling while on NARA property. This includes: (1) Participating in games for money or other...

36 CFR 1280.22 - Is gambling allowed on NARA property?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false Is gambling allowed on NARA...? Prohibited Activities § 1280.22 Is gambling allowed on NARA property? (a) No, you may not participate in any type of gambling while on NARA property. This includes: (1) Participating in games for money or other...

36 CFR § 1239.10 - What program assistance does NARA provide?

Code of Federal Regulations, 2013 CFR

2013-07-01

... What program assistance does NARA provide? (a) NARA publishes handbooks, conducts workshops and other training sessions, and furnishes information and guidance to Federal agencies about the creation of records... NARA training is available at http://www.archives.gov/records-mgmt/training/. ...

36 CFR § 1202.22 - Will NARA need my Social Security Number?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true Will NARA need my Social... Information § 1202.22 Will NARA need my Social Security Number? (a) Before a NARA employee or NARA contractor asks you to provide your social security number (SSN), he or she will ensure that the disclosure is...

36 CFR 1234.24 - How does NARA process a waiver request?

Code of Federal Regulations, 2010 CFR

2010-07-01

... ADMINISTRATION RECORDS MANAGEMENT FACILITY STANDARDS FOR RECORDS STORAGE FACILITIES Handling Deviations From NARA... alternative offers at least equal protection to Federal records, NARA will consult the appropriate industry... actions and time frames for bringing the facility into compliance are reasonable. (2) If NARA questions...

36 CFR 1234.24 - How does NARA process a waiver request?

Code of Federal Regulations, 2011 CFR

2011-07-01

... ADMINISTRATION RECORDS MANAGEMENT FACILITY STANDARDS FOR RECORDS STORAGE FACILITIES Handling Deviations From NARA... alternative offers at least equal protection to Federal records, NARA will consult the appropriate industry... actions and time frames for bringing the facility into compliance are reasonable. (2) If NARA questions...

75 FR 19555 - NARA Facility Locations and Hours

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-15

... at 41 CFR part 101-20. The National Archives at Philadelphia on Market Street (in Philadelphia) and... NATIONAL ARCHIVES AND RECORDS ADMINISTRATION 36 CFR Parts 1200, 1253, and 1280 [FDMS Docket NARA-10-0002] RIN 3095-AB66 NARA Facility Locations and Hours AGENCY: National Archives and Records...

36 CFR 1200.4 - How does NARA use its official seals?

Code of Federal Regulations, 2010 CFR

2010-07-01

... official seals? 1200.4 Section 1200.4 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES OFFICIAL SEALS How are NARA's Official Seals and Logos Designed and Used? § 1200.4 How does NARA use its official seals? NARA uses its three official seals to authenticate various...

36 CFR 1200.4 - How does NARA use its official seals?

Code of Federal Regulations, 2011 CFR

2011-07-01

... official seals? 1200.4 Section 1200.4 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES OFFICIAL SEALS How are NARA's Official Seals and Logos Designed and Used? § 1200.4 How does NARA use its official seals? NARA uses its three official seals to authenticate various...

36 CFR 1280.72 - What additional rules apply for a NARA approved event?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What additional rules apply... ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF NARA FACILITIES What Rules Apply to Use NARA Public Areas in the Washington, DC, Area? General § 1280.72 What additional rules apply for a NARA...

36 CFR 1258.12 - NARA reproduction fee schedule.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false NARA reproduction fee... ADMINISTRATION PUBLIC AVAILABILITY AND USE FEES § 1258.12 NARA reproduction fee schedule. (a) Certification: $15...) Unlisted processes: For reproductions not covered by this fee schedule, see also § 1258.4. Fees for other...

36 CFR 1258.12 - NARA reproduction fee schedule.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false NARA reproduction fee... ADMINISTRATION PUBLIC AVAILABILITY AND USE FEES § 1258.12 NARA reproduction fee schedule. (a) Certification: $15...) Unlisted processes: For reproductions not covered by this fee schedule, see also § 1258.4. Fees for other...

36 CFR 1200.7 - What are NARA logos and how are they used?

Code of Federal Regulations, 2010 CFR

2010-07-01

... same logo design with the geographic location of the facility added. (b) Other official NARA logos. For...) Publicity and other materials associated with a one-time or recurring NARA event or activity; (3) NARA Web...) Presentations. (d) NARA logos may be used by the public and other Federal agencies for events or activities co...

36 CFR § 1280.22 - Is gambling allowed on NARA property?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true Is gambling allowed on NARA...? Prohibited Activities § 1280.22 Is gambling allowed on NARA property? (a) No, you may not participate in any type of gambling while on NARA property. This includes: (1) Participating in games for money or other...

36 CFR § 1280.24 - Is smoking allowed on NARA property?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true Is smoking allowed on NARA property? § 1280.24 Section § 1280.24 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS...? Prohibited Activities § 1280.24 Is smoking allowed on NARA property? Smoking is not allowed inside any NARA...

78 FR 47245 - NARA Records Subject to FOIA

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-05

... the NARA Web site, available at: http://www.archives.gov/foia/electronic-reading-room.html . (b) The... 31, 1996, also will be placed on NARA's Web site at http://www.archives.gov/foia/electronic-reading... you faster if we have any questions about your request. It is incumbent on the requester to maintain a...

36 CFR 1284.30 - Does NARA lend documents to other institutions for exhibit purposes?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Does NARA lend documents to... NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES EXHIBITS § 1284.30 Does NARA lend documents to other institutions for exhibit purposes? Yes, NARA considers lending documents that are in appropriate...

36 CFR 1258.2 - What does the NARA reproduction fee schedule cover?

Code of Federal Regulations, 2010 CFR

2010-07-01

... reproduction fee schedule cover? 1258.2 Section 1258.2 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE FEES § 1258.2 What does the NARA reproduction fee schedule cover? The NARA reproduction fee schedule in § 1258.12 covers reproduction of: (a) NARA...

36 CFR 1258.2 - What does the NARA reproduction fee schedule cover?

Code of Federal Regulations, 2011 CFR

2011-07-01

... reproduction fee schedule cover? 1258.2 Section 1258.2 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE FEES § 1258.2 What does the NARA reproduction fee schedule cover? The NARA reproduction fee schedule in § 1258.12 covers reproduction of: (a) NARA...

Japan.

PubMed

1989-02-01

Japan consists of 3900 islands and lies off the east coast of Asia. Even though Japan is one of the most densely populated nations in the world, its growth rate has stabilized at .5%. 94% of all children go to senior high school and almost 90% finish. Responsibility for the sick, aged, and infirmed is changing from the family and private sector to government. Japan was founded in 600 BC and its 1st capital was in Nara (710-1867). The Portuguese, the 1st Westerners to make contact with Japan in 1542, opened trade which lasted until the mid 17th century. US Navy Commodore Matthew Perry forced Japan to reopen in 1854. Following wars with China and Russia in the late 1800s and early 1900s respectively, Japan took part in World Wars I and II. In between these wars Japan invaded Manchuria and China. The US dropped an atomic bomb on Hiroshima and Nagasaki and the Japanese surrendered in September, 1945 ending World War II (WWII). Following, WWII, the Allied Powers guided Japan's establishment as a nonthreatening nation and a democratic parliamentary government (a constitutional monarchy) with a limited defense force. Japan remains one of the most politically stable of all postwar democracies. The Liberal Democratic Party's Noboru Takeshita became prime minister in 1987. Japan has limited natural resources and only 19% of the land is arable. Japanese ingenuity and skill combine to produce one of the highest per hectare crop yields in the world. Japan is a major economic power, and its and the US economies are becoming more interdependent. Its exports, making up only 13% of the gross national product, mainly go to Canada and the US. Many in the US are concerned, however, with the trade deficit with Japan and are seeking ways to make trade more equitable. Japan wishes to maintain good relations with its Asian neighbors and other nations. The US and Japan enjoy a strong, productive relationship.

36 CFR 1254.52 - Can NARA extend the period of revoked research privileges?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false Can NARA extend the period of... Research Room Rules Other Conduct Rules § 1254.52 Can NARA extend the period of revoked research privileges... with the rules of conduct for NARA facilities, we may extend the revocation of privileges for...

36 CFR 1254.52 - Can NARA extend the period of revoked research privileges?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false Can NARA extend the period of... Research Room Rules Other Conduct Rules § 1254.52 Can NARA extend the period of revoked research privileges... with the rules of conduct for NARA facilities, we may extend the revocation of privileges for...

36 CFR 1254.52 - Can NARA extend the period of revoked research privileges?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Can NARA extend the period of... Research Room Rules Other Conduct Rules § 1254.52 Can NARA extend the period of revoked research privileges... with the rules of conduct for NARA facilities, we may extend the revocation of privileges for...

Real Time Conference 2014 Overview

NASA Astrophysics Data System (ADS)

Nomachi, Masaharu

2015-06-01

This article presents an overview of the 19th Real Time Conference held last May 26-30, 2014, at the Nara Prefectural New Public Hall, Nara, Japan, organized by the Research Center for Nuclear Physics of the Osaka University. The program included many invited talks and oral sessions offering an extensive overview on the following topics: real-time system architectures, intelligent signal processing, fast data transfer links and networks, trigger systems, data acquisition, processing-farms, control, monitoring and test systems, emerging real-time technologies, new standards, real-time safety and security, and some feedback on experiences. In parallel to the oral and poster presentations, industrial exhibits by companies, workshops and short courses also ran through the week.

36 CFR 1280.28 - Where can I eat and drink on NARA property?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Where can I eat and drink on... NARA Property? Prohibited Activities § 1280.28 Where can I eat and drink on NARA property? You may only eat and drink in designated areas in NARA facilities. Eating and drinking is prohibited in the...

36 CFR 1200.10 - What are NARA's criteria for approval?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What are NARA's criteria for approval? 1200.10 Section 1200.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES OFFICIAL SEALS Procedures for the Public To Request and Use NARA Seals and Logos...

36 CFR 1200.10 - What are NARA's criteria for approval?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false What are NARA's criteria for approval? 1200.10 Section 1200.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES OFFICIAL SEALS Procedures for the Public To Request and Use NARA Seals and Logos...

36 CFR 1250.56 - Fee schedule for NARA operational records.

Code of Federal Regulations, 2010 CFR

2010-07-01

... fraction thereof). (3) NARA will not charge review fees for time spent resolving general legal or policy... and can be performed by a clerical or administrative employee, the search rate is $16 per hour (or fraction thereof). When the request is more complicated and must be done by a professional employee of NARA...

36 CFR 1280.18 - May I bring guns or other weapons onto NARA property?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false May I bring guns or other weapons onto NARA property? 1280.18 Section 1280.18 Parks, Forests, and Public Property NATIONAL ARCHIVES... Conduct on NARA Property? Prohibited Activities § 1280.18 May I bring guns or other weapons onto NARA...

36 CFR 1280.18 - May I bring guns or other weapons onto NARA property?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false May I bring guns or other weapons onto NARA property? 1280.18 Section 1280.18 Parks, Forests, and Public Property NATIONAL ARCHIVES... Conduct on NARA Property? Prohibited Activities § 1280.18 May I bring guns or other weapons onto NARA...

36 CFR 1280.18 - May I bring guns or other weapons onto NARA property?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false May I bring guns or other weapons onto NARA property? 1280.18 Section 1280.18 Parks, Forests, and Public Property NATIONAL ARCHIVES... Conduct on NARA Property? Prohibited Activities § 1280.18 May I bring guns or other weapons onto NARA...

36 CFR 1280.18 - May I bring guns or other weapons onto NARA property?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false May I bring guns or other weapons onto NARA property? 1280.18 Section 1280.18 Parks, Forests, and Public Property NATIONAL ARCHIVES... Conduct on NARA Property? Prohibited Activities § 1280.18 May I bring guns or other weapons onto NARA...

36 CFR § 1254.52 - Can NARA extend the period of revoked research privileges?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true Can NARA extend the period of... MATERIALS Research Room Rules Other Conduct Rules § 1254.52 Can NARA extend the period of revoked research... with the rules of conduct for NARA facilities, we may extend the revocation of privileges for...

36 CFR 1201.32 - What are NARA's procedures for salary offset?

Code of Federal Regulations, 2010 CFR

2010-07-01

... for salary offset? 1201.32 Section 1201.32 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES COLLECTION OF CLAIMS Salary Offset § 1201.32 What are NARA's procedures for salary offset? (a) NARA will coordinate salary deductions under this subpart as appropriate...

36 CFR 1258.6 - When does NARA provide reproductions without charge?

Code of Federal Regulations, 2010 CFR

2010-07-01

... reproductions without charge? 1258.6 Section 1258.6 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE FEES § 1258.6 When does NARA provide reproductions without charge? NARA does not charge a fee for reproduction or certification in the instances described in...

36 CFR 1258.6 - When does NARA provide reproductions without charge?

Code of Federal Regulations, 2011 CFR

2011-07-01

... reproductions without charge? 1258.6 Section 1258.6 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE FEES § 1258.6 When does NARA provide reproductions without charge? NARA does not charge a fee for reproduction or certification in the instances described in...

36 CFR 1281.6 - What certifications must be provided to NARA?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false What certifications must be provided to NARA? 1281.6 Section 1281.6 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.6 What certifications must be provided to...

36 CFR 1250.12 - What types of records are available in NARA's FOIA Reading Room?

Code of Federal Regulations, 2010 CFR

2010-07-01

... available in NARA's FOIA Reading Room? 1250.12 Section 1250.12 Parks, Forests, and Public Property NATIONAL... records are available in NARA's FOIA Reading Room? (a) NARA makes available for public inspection and... manuals and instructions to staff that affect members of the public; (4) Copies of records requested 3 or...

36 CFR 1250.12 - What types of records are available in NARA's FOIA Reading Room?

Code of Federal Regulations, 2011 CFR

2011-07-01

... available in NARA's FOIA Reading Room? 1250.12 Section 1250.12 Parks, Forests, and Public Property NATIONAL... records are available in NARA's FOIA Reading Room? (a) NARA makes available for public inspection and... manuals and instructions to staff that affect members of the public; (4) Copies of records requested 3 or...

36 CFR 1202.76 - Can NARA deny my request for amendment?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Can NARA deny my request for amendment? 1202.76 Section 1202.76 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS... Can NARA deny my request for amendment? If the system manager denies your request to amend or...

36 CFR § 1250.56 - Fee schedule for NARA operational records.

Code of Federal Regulations, 2013 CFR

2013-07-01

... professional employee of NARA, the rate is $33 per hour (or fraction thereof) (2) Computer searching. This is the actual cost to NARA of operating the computer and the salary of the operator. When the search is... general legal or policy issues regarding the application of exemptions. (c) Reproduction fees—(1) Self...

36 CFR § 1280.18 - May I bring guns or other weapons onto NARA property?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true May I bring guns or other weapons onto NARA property? § 1280.18 Section § 1280.18 Parks, Forests, and Public Property NATIONAL... Conduct on NARA Property? Prohibited Activities § 1280.18 May I bring guns or other weapons onto NARA...

36 CFR 1202.44 - How long will it take for NARA to process my request?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false How long will it take for NARA to process my request? 1202.44 Section 1202.44 Parks, Forests, and Public Property NATIONAL... Individual Access to Records § 1202.44 How long will it take for NARA to process my request? (a) NARA will...

36 CFR 1233.10 - How does an agency transfer records to a NARA Federal Records Center?

Code of Federal Regulations, 2014 CFR

2014-07-01

... records to a NARA Federal Records Center? 1233.10 Section 1233.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT TRANSFER, USE, AND DISPOSITION OF RECORDS IN A NARA FEDERAL RECORDS CENTER § 1233.10 How does an agency transfer records to a NARA Federal...

36 CFR 1233.10 - How does an agency transfer records to a NARA Federal Records Center?

Code of Federal Regulations, 2012 CFR

2012-07-01

... records to a NARA Federal Records Center? 1233.10 Section 1233.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT TRANSFER, USE, AND DISPOSITION OF RECORDS IN A NARA FEDERAL RECORDS CENTER § 1233.10 How does an agency transfer records to a NARA Federal...

36 CFR 1233.10 - How does an agency transfer records to a NARA Federal Records Center?

Code of Federal Regulations, 2011 CFR

2011-07-01

... records to a NARA Federal Records Center? 1233.10 Section 1233.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT TRANSFER, USE, AND DISPOSITION OF RECORDS IN A NARA FEDERAL RECORDS CENTER § 1233.10 How does an agency transfer records to a NARA Federal...

36 CFR 1233.10 - How does an agency transfer records to a NARA Federal Records Center?

Code of Federal Regulations, 2010 CFR

2010-07-01

... records to a NARA Federal Records Center? 1233.10 Section 1233.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT TRANSFER, USE, AND DISPOSITION OF RECORDS IN A NARA FEDERAL RECORDS CENTER § 1233.10 How does an agency transfer records to a NARA Federal...

36 CFR § 1281.6 - What certifications must be provided to NARA?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true What certifications must be provided to NARA? § 1281.6 Section § 1281.6 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.6 What certifications must...

36 CFR 1280.26 - May I pass out fliers on NARA property?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false May I pass out fliers on NARA property? 1280.26 Section 1280.26 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS... those spaces designated by NARA as public forums. This prohibition does not apply to displays or notices...

36 CFR 1280.26 - May I pass out fliers on NARA property?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false May I pass out fliers on NARA property? 1280.26 Section 1280.26 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS... those spaces designated by NARA as public forums. This prohibition does not apply to displays or notices...

36 CFR 1258.10 - How does NARA develop and publicize new records reproduction fees?

Code of Federal Regulations, 2014 CFR

2014-07-01

...-line at http://www.archives.gov, by press releases, and through NARA's social media outlets. (2) New... nationwide, on-line at http://www.archives.gov, press releases, and through NARA's social media outlets. ...

36 CFR 1258.10 - How does NARA develop and publicize new records reproduction fees?

Code of Federal Regulations, 2012 CFR

2012-07-01

...-line at http://www.archives.gov, by press releases, and through NARA's social media outlets. (2) New... nationwide, on-line at http://www.archives.gov, press releases, and through NARA's social media outlets. ...

36 CFR 1201.33 - How will NARA coordinate salary offsets with other agencies?

Code of Federal Regulations, 2010 CFR

2010-07-01

... salary offsets with other agencies? 1201.33 Section 1201.33 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES COLLECTION OF CLAIMS Salary Offset § 1201.33 How will NARA coordinate salary offsets with other agencies? (a) Responsibilities of NARA as the creditor agency...

36 CFR 1281.16 - What standard does NARA use for measuring building size?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false What standard does NARA use for measuring building size? 1281.16 Section 1281.16 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.16 What standard...

36 CFR § 1233.10 - How does an agency transfer records to a NARA Federal Records Center?

Code of Federal Regulations, 2013 CFR

2013-07-01

... records to a NARA Federal Records Center? § 1233.10 Section § 1233.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT TRANSFER, USE, AND DISPOSITION OF RECORDS IN A NARA FEDERAL RECORDS CENTER § 1233.10 How does an agency transfer records to a NARA Federal...

36 CFR 1254.22 - Do I need to register when I visit a NARA facility for research?

Code of Federal Regulations, 2011 CFR

2011-07-01

... visit a NARA facility for research? 1254.22 Section 1254.22 Parks, Forests, and Public Property NATIONAL... MATERIALS Research Room Rules General Procedures § 1254.22 Do I need to register when I visit a NARA facility for research? (a) Yes, you must register each day you enter a NARA research facility by furnishing...

36 CFR 1254.22 - Do I need to register when I visit a NARA facility for research?

Code of Federal Regulations, 2014 CFR

2014-07-01

... visit a NARA facility for research? 1254.22 Section 1254.22 Parks, Forests, and Public Property NATIONAL... MATERIALS Research Room Rules General Procedures § 1254.22 Do I need to register when I visit a NARA facility for research? (a) Yes, you must register each day you enter a NARA research facility by furnishing...

36 CFR 1254.22 - Do I need to register when I visit a NARA facility for research?

Code of Federal Regulations, 2010 CFR

2010-07-01

... visit a NARA facility for research? 1254.22 Section 1254.22 Parks, Forests, and Public Property NATIONAL... MATERIALS Research Room Rules General Procedures § 1254.22 Do I need to register when I visit a NARA facility for research? (a) Yes, you must register each day you enter a NARA research facility by furnishing...

36 CFR 1254.22 - Do I need to register when I visit a NARA facility for research?

Code of Federal Regulations, 2012 CFR

2012-07-01

... visit a NARA facility for research? 1254.22 Section 1254.22 Parks, Forests, and Public Property NATIONAL... MATERIALS Research Room Rules General Procedures § 1254.22 Do I need to register when I visit a NARA facility for research? (a) Yes, you must register each day you enter a NARA research facility by furnishing...

36 CFR § 1258.10 - How does NARA develop and publicize new records reproduction fees?

Code of Federal Regulations, 2013 CFR

2013-07-01

...-line at http://www.archives.gov, by press releases, and through NARA's social media outlets. (2) New... nationwide, on-line at http://www.archives.gov, press releases, and through NARA's social media outlets. ...

36 CFR 1280.10 - Are there special rules for driving on NARA property?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false Are there special rules for driving on NARA property? 1280.10 Section 1280.10 Parks, Forests, and Public Property NATIONAL ARCHIVES..., and park only in designated spaces. (b) NARA will tow, at the owner's expense, any vehicle that is...

36 CFR 1254.32 - What rules apply to public access use of the Internet on NARA-supplied computers?

Code of Federal Regulations, 2011 CFR

2011-07-01

... access use of the Internet on NARA-supplied computers? 1254.32 Section 1254.32 Parks, Forests, and Public... of the Internet on NARA-supplied computers? (a) Public access computers (workstations) are available for Internet use in all NARA research rooms. The number of workstations varies per location. We...

36 CFR 1254.32 - What rules apply to public access use of the Internet on NARA-supplied computers?

Code of Federal Regulations, 2010 CFR

2010-07-01

... access use of the Internet on NARA-supplied computers? 1254.32 Section 1254.32 Parks, Forests, and Public... of the Internet on NARA-supplied computers? (a) Public access computers (workstations) are available for Internet use in all NARA research rooms. The number of workstations varies per location. We...

36 CFR 1200.7 - What are NARA logos and how are they used?

Code of Federal Regulations, 2011 CFR

2011-07-01

... business cards; (2) On all NARA web and social media sites (intranet and internet), whether hosted...) Regulations.gov and FedReg.gov Web sites. ER11MY04.008 (iii) Federal Register paper edition. ER11MY04.009 (iv...) NARA Web sites (Intranet and Internet); (4) Officially approved internal and external publications; and...

36 CFR 1280.10 - Are there special rules for driving on NARA property?

Code of Federal Regulations, 2010 CFR

2010-07-01

..., and park only in designated spaces. (b) NARA will tow, at the owner's expense, any vehicle that is parked illegally. Except in emergencies, you may not park in spaces reserved for holders of NARA parking permits. If an emergency forces you to leave your vehicle in an illegal area, you must notify the security...

36 CFR 1280.10 - Are there special rules for driving on NARA property?

Code of Federal Regulations, 2012 CFR

2012-07-01

..., and park only in designated spaces. (b) NARA will tow, at the owner's expense, any vehicle that is parked illegally. Except in emergencies, you may not park in spaces reserved for holders of NARA parking permits. If an emergency forces you to leave your vehicle in an illegal area, you must notify the security...

36 CFR 1239.22 - How does NARA notify the agency of the inspection?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false How does NARA notify the agency of the inspection? 1239.22 Section 1239.22 Parks, Forests, and Public Property NATIONAL ARCHIVES... appoint a point of contact who will assist NARA in conducting the inspection. (b) If the agency does not...

36 CFR 1239.22 - How does NARA notify the agency of the inspection?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false How does NARA notify the agency of the inspection? 1239.22 Section 1239.22 Parks, Forests, and Public Property NATIONAL ARCHIVES... appoint a point of contact who will assist NARA in conducting the inspection. (b) If the agency does not...

36 CFR 1239.22 - How does NARA notify the agency of the inspection?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false How does NARA notify the agency of the inspection? 1239.22 Section 1239.22 Parks, Forests, and Public Property NATIONAL ARCHIVES... appoint a point of contact who will assist NARA in conducting the inspection. (b) If the agency does not...

36 CFR 1239.22 - How does NARA notify the agency of the inspection?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false How does NARA notify the agency of the inspection? 1239.22 Section 1239.22 Parks, Forests, and Public Property NATIONAL ARCHIVES... appoint a point of contact who will assist NARA in conducting the inspection. (b) If the agency does not...

36 CFR 1281.16 - What standard does NARA use for measuring building size?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What standard does NARA use... does NARA use for measuring building size? For purposes of 44 U.S.C. 2112(g)(3) and (4), and this part... measuring the size of the facility and the value for calculating the endowment. The architectural and design...

36 CFR 1233.20 - How are disposal clearances managed for records in NARA Federal Records Centers?

Code of Federal Regulations, 2010 CFR

2010-07-01

... NARA Federal Records Centers Program Web site (http://www.archives.gov/frc/toolkit.html#disposition...) or individual NARA Federal Records Centers (http://www.archives.gov/frc/locations.html), individual...

Multi-Functional UV-Visible-IR Nanosensors Devices and Structures

DTIC Science & Technology

2015-04-29

Dual-Gate MOSFET System, Proceedings of the International Workshop on Computational Electronics, Nara, Japan, Society of Micro- and Nanoelectronics ...International Workshop on Computational Electronics, Nara, Japan, Society of Micro- and Nanoelectronics , 216-217 (2013); ISBN 978-3-901578-26-7 M. S...Raman Spectroscopy, Proceedings of the International Workshop on Computational Electronics, Nara, Japan, Society of Micro- and Nanoelectronics , 198

36 CFR 1260.74 - What if NARA does not concur with an agency decision to reclassify or restore the classification...

Code of Federal Regulations, 2010 CFR

2010-07-01

..., NARA may forward the challenge directly to the ISCAP. NARA must forward the challenge within 60 days of... may forward the appeal directly to the ISCAP. NARA must forward the challenge within 60 days of the...

36 CFR 1260.74 - What if NARA does not concur with an agency decision to reclassify or restore the classification...

Code of Federal Regulations, 2011 CFR

2011-07-01

..., NARA may forward the challenge directly to the ISCAP. NARA must forward the challenge within 60 days of... may forward the appeal directly to the ISCAP. NARA must forward the challenge within 60 days of the...

36 CFR § 1254.22 - Do I need to register when I visit a NARA facility for research?

Code of Federal Regulations, 2013 CFR

2013-07-01

... visit a NARA facility for research? § 1254.22 Section § 1254.22 Parks, Forests, and Public Property... HISTORICAL MATERIALS Research Room Rules General Procedures § 1254.22 Do I need to register when I visit a NARA facility for research? (a) Yes, you must register each day you enter a NARA research facility by...

36 CFR 1280.46 - What are the rules for filming, photographing, or videotaping on NARA property for personal use?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false What are the rules for filming, photographing, or videotaping on NARA property for personal use? 1280.46 Section 1280.46 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF NARA...

36 CFR 1280.46 - What are the rules for filming, photographing, or videotaping on NARA property for personal use?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false What are the rules for filming, photographing, or videotaping on NARA property for personal use? 1280.46 Section 1280.46 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF NARA...

36 CFR 1280.46 - What are the rules for filming, photographing, or videotaping on NARA property for personal use?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false What are the rules for filming, photographing, or videotaping on NARA property for personal use? 1280.46 Section 1280.46 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF NARA...

36 CFR 1254.104 - How does NARA determine fees to prepare documents for microfilming?

Code of Federal Regulations, 2010 CFR

2010-07-01

... benefits) and supply costs when we perform the work. When a NARA contractor performs the work, the fees are... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false How does NARA determine fees to prepare documents for microfilming? 1254.104 Section 1254.104 Parks, Forests, and Public Property...

36 CFR § 1281.16 - What standard does NARA use for measuring building size?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true What standard does NARA use for measuring building size? § 1281.16 Section § 1281.16 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.16 What...

36 CFR 1260.50 - What procedures does NARA follow when it receives a request for Executive Branch records under...

Code of Federal Regulations, 2010 CFR

2010-07-01

... the past 2 years, or if the specific information is the subject of pending litigation, NARA will... requested records are less than 25 years old, NARA refers copies of the records to the originating agency... the requested records are more than 25 years old, NARA will review the records using systematic...

36 CFR 1280.82 - How will NARA handle my request to use public areas in the National Archives Building?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false How will NARA handle my request to use public areas in the National Archives Building? 1280.82 Section 1280.82 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF NARA FACILITIES What...

36 CFR 1280.82 - How will NARA handle my request to use public areas in the National Archives Building?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false How will NARA handle my request to use public areas in the National Archives Building? 1280.82 Section 1280.82 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF NARA FACILITIES What...

36 CFR 1254.30 - Does NARA provide any supplies?

Code of Federal Regulations, 2010 CFR

2010-07-01

... ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Research Room Rules... research rooms. NARA also provides diskettes and paper for our public access computers. Return unused...

36 CFR § 1280.10 - Are there special rules for driving on NARA property?

Code of Federal Regulations, 2013 CFR

2013-07-01

..., and park only in designated spaces. (b) NARA will tow, at the owner's expense, any vehicle that is parked illegally. Except in emergencies, you may not park in spaces reserved for holders of NARA parking permits. If an emergency forces you to leave your vehicle in an illegal area, you must notify the security...

36 CFR 1202.6 - Whom should I contact for Privacy Act matters at NARA?

Code of Federal Regulations, 2011 CFR

2011-07-01

... Privacy Act matters at NARA? 1202.6 Section 1202.6 Parks, Forests, and Public Property NATIONAL ARCHIVES... Information About the Privacy Act § 1202.6 Whom should I contact for Privacy Act matters at NARA? Contact the.... Details about what to include in your Privacy Act request are discussed in Subpart C of this part. ...

36 CFR § 1239.22 - How does NARA notify the agency of the inspection?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true How does NARA notify the agency of the inspection? § 1239.22 Section § 1239.22 Parks, Forests, and Public Property NATIONAL... that the agency appoint a point of contact who will assist NARA in conducting the inspection. (b) If...

36 CFR 1201.41 - What are NARA's procedures for collecting debts by tax refund offset?

Code of Federal Regulations, 2010 CFR

2010-07-01

... for collecting debts by tax refund offset? 1201.41 Section 1201.41 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES COLLECTION OF CLAIMS Tax Refund Offset § 1201.41 What are NARA's procedures for collecting debts by tax refund offset? (a) NARA's Financial Services...

36 CFR 1281.12 - What information must be provided to NARA for its report to Congress on a change or addition to a...

Code of Federal Regulations, 2011 CFR

2011-07-01

... provided to NARA for its report to Congress on a change or addition to a Presidential library facility... ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.12 What information must be provided to NARA for its report to Congress on a change or addition to a Presidential library facility? (a) NARA...

36 CFR 1281.12 - What information must be provided to NARA for its report to Congress on a change or addition to a...

Code of Federal Regulations, 2012 CFR

2012-07-01

... provided to NARA for its report to Congress on a change or addition to a Presidential library facility... ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.12 What information must be provided to NARA for its report to Congress on a change or addition to a Presidential library facility? (a) NARA...

36 CFR 1281.12 - What information must be provided to NARA for its report to Congress on a change or addition to a...

Code of Federal Regulations, 2010 CFR

2010-07-01

... provided to NARA for its report to Congress on a change or addition to a Presidential library facility... ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.12 What information must be provided to NARA for its report to Congress on a change or addition to a Presidential library facility? (a) NARA...

36 CFR 1281.12 - What information must be provided to NARA for its report to Congress on a change or addition to a...

Code of Federal Regulations, 2014 CFR

2014-07-01

... provided to NARA for its report to Congress on a change or addition to a Presidential library facility... ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.12 What information must be provided to NARA for its report to Congress on a change or addition to a Presidential library facility? (a) NARA...

36 CFR 1256.102 - What fees does NARA charge?

Code of Federal Regulations, 2010 CFR

2010-07-01

... Distribution of United States Information Agency Audiovisual Materials in the National Archives of the United States § 1256.102 What fees does NARA charge? Copies of audiovisual records will only be provided under...

36 CFR 1280.74 - What spaces in the National Archives Building are available for use by non-NARA groups and...

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What spaces in the National Archives Building are available for use by non-NARA groups and organizations? 1280.74 Section 1280.74 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF NARA...

36 CFR 1280.74 - What spaces in the National Archives Building are available for use by non-NARA groups and...

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false What spaces in the National Archives Building are available for use by non-NARA groups and organizations? 1280.74 Section 1280.74 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF NARA...

36 CFR 1202.90 - What NARA systems of records are exempt from release under the National Security Exemption of the...

Code of Federal Regulations, 2010 CFR

2010-07-01

... of the Inspector General (NARA-23) and the Personnel Security Case Files (NARA-24) systems of records... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What NARA systems of records are exempt from release under the National Security Exemption of the Privacy Act? 1202.90 Section 1202...

36 CFR § 1280.46 - What are the rules for filming, photographing, or videotaping on NARA property for personal use?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true What are the rules for filming..., and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF NARA FACILITIES What Are the Rules for Filming, Photographing, or Videotaping on NARA Property? § 1280.46 What are...

36 CFR 1281.8 - What information must be provided to NARA for its report to Congress on a new Presidential...

Code of Federal Regulations, 2012 CFR

2012-07-01

... provided to NARA for its report to Congress on a new Presidential library facility? 1281.8 Section 1281.8... PRESIDENTIAL LIBRARY FACILITIES § 1281.8 What information must be provided to NARA for its report to Congress on a new Presidential library facility? (a) NARA must submit a report to Congress on a proposed new...

36 CFR 1281.8 - What information must be provided to NARA for its report to Congress on a new Presidential...

Code of Federal Regulations, 2010 CFR

2010-07-01

... provided to NARA for its report to Congress on a new Presidential library facility? 1281.8 Section 1281.8... PRESIDENTIAL LIBRARY FACILITIES § 1281.8 What information must be provided to NARA for its report to Congress on a new Presidential library facility? (a) NARA must submit a report to Congress on a proposed new...

36 CFR 1281.8 - What information must be provided to NARA for its report to Congress on a new Presidential...

Code of Federal Regulations, 2011 CFR

2011-07-01

... provided to NARA for its report to Congress on a new Presidential library facility? 1281.8 Section 1281.8... PRESIDENTIAL LIBRARY FACILITIES § 1281.8 What information must be provided to NARA for its report to Congress on a new Presidential library facility? (a) NARA must submit a report to Congress on a proposed new...

36 CFR 1281.8 - What information must be provided to NARA for its report to Congress on a new Presidential...

Code of Federal Regulations, 2014 CFR

2014-07-01

... provided to NARA for its report to Congress on a new Presidential library facility? 1281.8 Section 1281.8... PRESIDENTIAL LIBRARY FACILITIES § 1281.8 What information must be provided to NARA for its report to Congress on a new Presidential library facility? (a) NARA must submit a report to Congress on a proposed new...

36 CFR § 1281.12 - What information must be provided to NARA for its report to Congress on a change or addition to a...

Code of Federal Regulations, 2013 CFR

2013-07-01

... provided to NARA for its report to Congress on a change or addition to a Presidential library facility? Â... ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.12 What information must be provided to NARA for its report to Congress on a change or addition to a Presidential library facility? (a) NARA...

36 CFR 1280.34 - What are the types of corrective action NARA imposes for prohibited behavior?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false What are the types of corrective action NARA imposes for prohibited behavior? 1280.34 Section 1280.34 Parks, Forests, and Public... corrective action NARA imposes for prohibited behavior? (a) Individuals who violate the provisions of this...

36 CFR 1280.34 - What are the types of corrective action NARA imposes for prohibited behavior?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false What are the types of corrective action NARA imposes for prohibited behavior? 1280.34 Section 1280.34 Parks, Forests, and Public... corrective action NARA imposes for prohibited behavior? (a) Individuals who violate the provisions of this...

36 CFR 1280.34 - What are the types of corrective action NARA imposes for prohibited behavior?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What are the types of corrective action NARA imposes for prohibited behavior? 1280.34 Section 1280.34 Parks, Forests, and Public... corrective action NARA imposes for prohibited behavior? (a) Individuals who violate the provisions of this...

36 CFR 1280.34 - What are the types of corrective action NARA imposes for prohibited behavior?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false What are the types of corrective action NARA imposes for prohibited behavior? 1280.34 Section 1280.34 Parks, Forests, and Public... corrective action NARA imposes for prohibited behavior? (a) Individuals who violate the provisions of this...

36 CFR 1280.44 - May I film, photograph, or videotape on NARA property for commercial purposes?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false May I film, photograph, or videotape on NARA property for commercial purposes? 1280.44 Section 1280.44 Parks, Forests, and Public... Rules for Filming, Photographing, or Videotaping on NARA Property? § 1280.44 May I film, photograph, or...

36 CFR 1280.44 - May I film, photograph, or videotape on NARA property for commercial purposes?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false May I film, photograph, or videotape on NARA property for commercial purposes? 1280.44 Section 1280.44 Parks, Forests, and Public... Rules for Filming, Photographing, or Videotaping on NARA Property? § 1280.44 May I film, photograph, or...

36 CFR 1280.44 - May I film, photograph, or videotape on NARA property for commercial purposes?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false May I film, photograph, or videotape on NARA property for commercial purposes? 1280.44 Section 1280.44 Parks, Forests, and Public... Rules for Filming, Photographing, or Videotaping on NARA Property? § 1280.44 May I film, photograph, or...

36 CFR 1280.44 - May I film, photograph, or videotape on NARA property for commercial purposes?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false May I film, photograph, or videotape on NARA property for commercial purposes? 1280.44 Section 1280.44 Parks, Forests, and Public... Rules for Filming, Photographing, or Videotaping on NARA Property? § 1280.44 May I film, photograph, or...

36 CFR § 1281.8 - What information must be provided to NARA for its report to Congress on a new Presidential...

Code of Federal Regulations, 2013 CFR

2013-07-01

... provided to NARA for its report to Congress on a new Presidential library facility? § 1281.8 Section Â... PRESIDENTIAL LIBRARY FACILITIES § 1281.8 What information must be provided to NARA for its report to Congress on a new Presidential library facility? (a) NARA must submit a report to Congress on a proposed new...

36 CFR § 1281.10 - When does a foundation consult with NARA before offering a gift of a physical or material change...

Code of Federal Regulations, 2013 CFR

2013-07-01

... with NARA before offering a gift of a physical or material change, or addition to an existing library... ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.10 When does a foundation consult with NARA before offering a gift of a physical or material change, or addition to an existing library? A foundation...

36 CFR 1256.28 - Does NARA make any exceptions for access to records containing privacy-restricted information?

Code of Federal Regulations, 2012 CFR

2012-07-01

... research to qualified persons doing biomedical or social science research under the conditions outlined in... researchers in accordance with § 1256.24. (3) NARA will not grant access to restricted census and survey... research must submit a written request to the NARA FOIA/Privacy Act Officer (NGC), National Archives and...

36 CFR 1256.28 - Does NARA make any exceptions for access to records containing privacy-restricted information?

Code of Federal Regulations, 2014 CFR

2014-07-01

... research to qualified persons doing biomedical or social science research under the conditions outlined in... researchers in accordance with § 1256.24. (3) NARA will not grant access to restricted census and survey... research must submit a written request to the NARA FOIA/Privacy Act Officer (NGC), National Archives and...

36 CFR 1256.28 - Does NARA make any exceptions for access to records containing privacy-restricted information?

Code of Federal Regulations, 2010 CFR

2010-07-01

... research to qualified persons doing biomedical or social science research under the conditions outlined in... researchers in accordance with § 1256.24. (3) NARA will not grant access to restricted census and survey... research must submit a written request to the NARA FOIA/Privacy Act Officer (NGC), National Archives and...

36 CFR 1254.106 - What are NARA's equipment standards?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What are NARA's equipment standards? 1254.106 Section 1254.106 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Microfilming Archival...

36 CFR 1254.106 - What are NARA's equipment standards?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false What are NARA's equipment standards? 1254.106 Section 1254.106 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Microfilming Archival...

36 CFR 1254.100 - How does NARA evaluate requests?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false How does NARA evaluate requests? 1254.100 Section 1254.100 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Microfilming Archival...

36 CFR 1254.100 - How does NARA evaluate requests?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false How does NARA evaluate requests? 1254.100 Section 1254.100 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Microfilming Archival...

36 CFR 1254.100 - How does NARA evaluate requests?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false How does NARA evaluate requests? 1254.100 Section 1254.100 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Microfilming Archival...

36 CFR 1254.100 - How does NARA evaluate requests?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false How does NARA evaluate requests? 1254.100 Section 1254.100 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Microfilming Archival...

36 CFR 1200.14 - What are NARA's conditions for the use of the official seals and logos?

Code of Federal Regulations, 2010 CFR

2010-07-01

... for the use of the official seals and logos? 1200.14 Section 1200.14 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES OFFICIAL SEALS Procedures for the Public To Request and Use NARA Seals and Logos § 1200.14 What are NARA's conditions for the use of the...

36 CFR 1200.14 - What are NARA's conditions for the use of the official seals and logos?

Code of Federal Regulations, 2011 CFR

2011-07-01

... for the use of the official seals and logos? 1200.14 Section 1200.14 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES OFFICIAL SEALS Procedures for the Public To Request and Use NARA Seals and Logos § 1200.14 What are NARA's conditions for the use of the...

36 CFR 1202.8 - How does NARA handle records that are in Government-wide Privacy Act systems?

Code of Federal Regulations, 2011 CFR

2011-07-01

... that are in Government-wide Privacy Act systems? 1202.8 Section 1202.8 Parks, Forests, and Public... ACT OF 1974 General Information About the Privacy Act § 1202.8 How does NARA handle records that are in Government-wide Privacy Act systems? Records in the custody of NARA in a Government-wide Privacy...

36 CFR 1202.8 - How does NARA handle records that are in Government-wide Privacy Act systems?

Code of Federal Regulations, 2010 CFR

2010-07-01

... that are in Government-wide Privacy Act systems? 1202.8 Section 1202.8 Parks, Forests, and Public... ACT OF 1974 General Information About the Privacy Act § 1202.8 How does NARA handle records that are in Government-wide Privacy Act systems? Records in the custody of NARA in a Government-wide Privacy...

36 CFR § 1280.34 - What are the types of corrective action NARA imposes for prohibited behavior?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true What are the types of corrective action NARA imposes for prohibited behavior? § 1280.34 Section § 1280.34 Parks, Forests, and... of corrective action NARA imposes for prohibited behavior? (a) Individuals who violate the provisions...

Error modelling of quantum Hall array resistance standards

NASA Astrophysics Data System (ADS)

Marzano, Martina; Oe, Takehiko; Ortolano, Massimo; Callegaro, Luca; Kaneko, Nobu-Hisa

2018-04-01

Quantum Hall array resistance standards (QHARSs) are integrated circuits composed of interconnected quantum Hall effect elements that allow the realization of virtually arbitrary resistance values. In recent years, techniques were presented to efficiently design QHARS networks. An open problem is that of the evaluation of the accuracy of a QHARS, which is affected by contact and wire resistances. In this work, we present a general and systematic procedure for the error modelling of QHARSs, which is based on modern circuit analysis techniques and Monte Carlo evaluation of the uncertainty. As a practical example, this method of analysis is applied to the characterization of a 1 MΩ QHARS developed by the National Metrology Institute of Japan. Software tools are provided to apply the procedure to other arrays.

36 CFR 1254.32 - What rules apply to public access use of the Internet on NARA-supplied computers?

Code of Federal Regulations, 2012 CFR

2012-07-01

... access use of the Internet on NARA-supplied computers? 1254.32 Section 1254.32 Parks, Forests, and Public... of the Internet on NARA-supplied computers? (a) Public access computers (workstations) are available... should not expect privacy while using these workstations. These workstations are operated and maintained...

36 CFR 1254.32 - What rules apply to public access use of the Internet on NARA-supplied computers?

Code of Federal Regulations, 2014 CFR

2014-07-01

... access use of the Internet on NARA-supplied computers? 1254.32 Section 1254.32 Parks, Forests, and Public... of the Internet on NARA-supplied computers? (a) Public access computers (workstations) are available... should not expect privacy while using these workstations. These workstations are operated and maintained...

36 CFR 1254.20 - What general policies apply in all NARA facilities where archival materials are available for...

Code of Federal Regulations, 2010 CFR

2010-07-01

... What general policies apply in all NARA facilities where archival materials are available for research... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What general policies apply in all NARA facilities where archival materials are available for research? 1254.20 Section 1254.20...

36 CFR § 1280.44 - May I film, photograph, or videotape on NARA property for commercial purposes?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true May I film, photograph, or videotape on NARA property for commercial purposes? § 1280.44 Section § 1280.44 Parks, Forests, and Public... Rules for Filming, Photographing, or Videotaping on NARA Property? § 1280.44 May I film, photograph, or...

36 CFR § 1256.28 - Does NARA make any exceptions for access to records containing privacy-restricted information?

Code of Federal Regulations, 2013 CFR

2013-07-01

... research to qualified persons doing biomedical or social science research under the conditions outlined in... researchers in accordance with § 1256.24. (3) NARA will not grant access to restricted census and survey... research must submit a written request to the NARA FOIA/Privacy Act Officer (NGC), National Archives and...

36 CFR 1260.46 - How will NARA implement automatic declassification?

Code of Federal Regulations, 2010 CFR

2010-07-01

... Systematic Review § 1260.46 How will NARA implement automatic declassification? (a) Textual records and..., audiotapes, videotapes, or comparable media that make a review for possible declassification exemptions more..., motion pictures, audiotapes, videotapes, or comparable media that make a review for possible...

36 CFR 1260.46 - How will NARA implement automatic declassification?

Code of Federal Regulations, 2011 CFR

2011-07-01

... Systematic Review § 1260.46 How will NARA implement automatic declassification? (a) Textual records and..., audiotapes, videotapes, or comparable media that make a review for possible declassification exemptions more..., motion pictures, audiotapes, videotapes, or comparable media that make a review for possible...

The State of Continuing Education in Japan.

ERIC Educational Resources Information Center

Masatoshi, Nagashima, Ed.; And Others

This book contains the following articles about the state of continuing education and occupational training in Japan: "Funabashi City University of Sports Health" (Abe Nobuhiro); "Public Halls in Omiya City" (Kawamoto Koji); "Setagaya Senior Citizens College (Setagaya Rojin Daigaku)" (Sawamura Hiroshi); "Lifelong…

36 CFR 1280.80 - How do I request to use NARA public areas in the National Archives Building?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false How do I request to use NARA public areas in the National Archives Building? 1280.80 Section 1280.80 Parks, Forests, and Public... Apply to Use NARA Public Areas in the Washington, DC, Area? National Archives Building, Washington, Dc...

36 CFR 1280.80 - How do I request to use NARA public areas in the National Archives Building?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false How do I request to use NARA public areas in the National Archives Building? 1280.80 Section 1280.80 Parks, Forests, and Public... Apply to Use NARA Public Areas in the Washington, DC, Area? National Archives Building, Washington, Dc...

36 CFR 1254.48 - When does NARA revoke research privileges?

Code of Federal Regulations, 2010 CFR

2010-07-01

... research privileges? 1254.48 Section 1254.48 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Research Room Rules Other Conduct Rules § 1254.48 When does NARA revoke research privileges? (a) Behaviors...

36 CFR 1254.48 - When does NARA revoke research privileges?

Code of Federal Regulations, 2011 CFR

2011-07-01

... research privileges? 1254.48 Section 1254.48 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Research Room Rules Other Conduct Rules § 1254.48 When does NARA revoke research privileges? (a) Behaviors...

Effect of the number of request calls on the time from call to hospital arrival: a cross-sectional study of an ambulance record database in Nara prefecture, Japan.

PubMed

Hanaki, Nao; Yamashita, Kazuto; Kunisawa, Susumu; Imanaka, Yuichi

2016-12-09

In Japan, ambulance staff sometimes must make request calls to find hospitals that can accept patients because of an inadequate information sharing system. This study aimed to quantify effects of the number of request calls on the time interval between an emergency call and hospital arrival. A cross-sectional study of an ambulance records database in Nara prefecture, Japan. A total of 43 663 patients (50% women; 31.2% aged 80 years and over): (1) transported by ambulance from April 2013 to March 2014, (2) aged 15 years and over, and (3) with suspected major illness. The time from call to hospital arrival, defined as the time interval from receipt of an emergency call to ambulance arrival at a hospital. The mean time interval from emergency call to hospital arrival was 44.5 min, and the mean number of requests was 1.8. Multilevel linear regression analysis showed that ∼43.8% of variations in transportation times were explained by patient age, sex, season, day of the week, time, category of suspected illness, person calling for the ambulance, emergency status at request call, area and number of request calls. A higher number of request calls was associated with longer time intervals to hospital arrival (addition of 6.3 min per request call; p<0.001). In an analysis dividing areas into three groups, there were differences in transportation time for diseases needing cardiologists, neurologists, neurosurgeons and orthopaedists. The study revealed 6.3 additional minutes needed in transportation time for every refusal of a request call, and also revealed disease-specific delays among specific areas. An effective system should be collaboratively established by policymakers and physicians to ensure the rapid identification of an available hospital for patient transportation in order to reduce the time from the initial emergency call to hospital arrival. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a

Effect of the number of request calls on the time from call to hospital arrival: a cross-sectional study of an ambulance record database in Nara prefecture, Japan

PubMed Central

Hanaki, Nao; Yamashita, Kazuto; Kunisawa, Susumu; Imanaka, Yuichi

2016-01-01

Objectives In Japan, ambulance staff sometimes must make request calls to find hospitals that can accept patients because of an inadequate information sharing system. This study aimed to quantify effects of the number of request calls on the time interval between an emergency call and hospital arrival. Design and setting A cross-sectional study of an ambulance records database in Nara prefecture, Japan. Cases A total of 43 663 patients (50% women; 31.2% aged 80 years and over): (1) transported by ambulance from April 2013 to March 2014, (2) aged 15 years and over, and (3) with suspected major illness. Primary outcome measures The time from call to hospital arrival, defined as the time interval from receipt of an emergency call to ambulance arrival at a hospital. Results The mean time interval from emergency call to hospital arrival was 44.5 min, and the mean number of requests was 1.8. Multilevel linear regression analysis showed that ∼43.8% of variations in transportation times were explained by patient age, sex, season, day of the week, time, category of suspected illness, person calling for the ambulance, emergency status at request call, area and number of request calls. A higher number of request calls was associated with longer time intervals to hospital arrival (addition of 6.3 min per request call; p<0.001). In an analysis dividing areas into three groups, there were differences in transportation time for diseases needing cardiologists, neurologists, neurosurgeons and orthopaedists. Conclusions The study revealed 6.3 additional minutes needed in transportation time for every refusal of a request call, and also revealed disease-specific delays among specific areas. An effective system should be collaboratively established by policymakers and physicians to ensure the rapid identification of an available hospital for patient transportation in order to reduce the time from the initial emergency call to hospital arrival. PMID:27940625

36 CFR 1280.71 - What are the general rules for using NARA property in the Washington, DC, area?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What are the general rules for using NARA property in the Washington, DC, area? 1280.71 Section 1280.71 Parks, Forests, and..., B, and C of this part, you must adhere to the following rules when using NARA public spaces: (a) All...

36 CFR 1280.71 - What are the general rules for using NARA property in the Washington, DC, area?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false What are the general rules for using NARA property in the Washington, DC, area? 1280.71 Section 1280.71 Parks, Forests, and..., B, and C of this part, you must adhere to the following rules when using NARA public spaces: (a) All...

36 CFR 1239.20 - When will NARA undertake an inspection?

Code of Federal Regulations, 2010 CFR

2010-07-01

... management problems involving high risk to significant records. Problems may be identified through a risk... ADMINISTRATION RECORDS MANAGEMENT PROGRAM ASSISTANCE AND INSPECTIONS Inspections § 1239.20 When will NARA...) have failed to mitigate situations where there is a high risk of loss of significant records, or when...

36 CFR 1234.20 - What rules apply if there is a conflict between NARA standards and other regulatory standards...

Code of Federal Regulations, 2010 CFR

2010-07-01

... a conflict between NARA standards and other regulatory standards that a facility must follow? 1234... Facility Standards § 1234.20 What rules apply if there is a conflict between NARA standards and other regulatory standards that a facility must follow? (a) If any provisions of this part conflict with local or...

36 CFR 1250.52 - How much will I have to pay for a FOIA request for NARA operational records?

Code of Federal Regulations, 2011 CFR

2011-07-01

... for a FOIA request for NARA operational records? 1250.52 Section 1250.52 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE PUBLIC AVAILABILITY AND USE OF FEDERAL RECORDS Fees § 1250.52 How much will I have to pay for a FOIA request for NARA...

36 CFR 1250.52 - How much will I have to pay for a FOIA request for NARA operational records?

Code of Federal Regulations, 2010 CFR

2010-07-01

... for a FOIA request for NARA operational records? 1250.52 Section 1250.52 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE PUBLIC AVAILABILITY AND USE OF FEDERAL RECORDS Fees § 1250.52 How much will I have to pay for a FOIA request for NARA...

36 CFR 1250.52 - How much will I have to pay for a FOIA request for NARA operational records?

Code of Federal Regulations, 2012 CFR

2012-07-01

... for a FOIA request for NARA operational records? 1250.52 Section 1250.52 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE PUBLIC AVAILABILITY AND USE OF FEDERAL RECORDS Fees § 1250.52 How much will I have to pay for a FOIA request for NARA...

36 CFR 1280.46 - What are the rules for filming, photographing, or videotaping on NARA property for personal use?

Code of Federal Regulations, 2010 CFR

2010-07-01

... film, photograph, or videotape outside a NARA facility so long as you do not impede vehicular or pedestrian traffic. (b) You may film, photograph, or videotape inside a NARA facility during regular business... equipment. (c) You may not film, photograph, or videotape in any of the exhibit areas of the National...

36 CFR § 1254.32 - What rules apply to public access use of the Internet on NARA-supplied computers?

Code of Federal Regulations, 2013 CFR

2013-07-01

... access use of the Internet on NARA-supplied computers? § 1254.32 Section § 1254.32 Parks, Forests, and... public access use of the Internet on NARA-supplied computers? (a) Public access computers (workstations... equipment. (b) You should not expect privacy while using these workstations. These workstations are operated...

36 CFR 1254.50 - Does NARA consider reinstating research privileges?

Code of Federal Regulations, 2010 CFR

2010-07-01

... reinstating research privileges? 1254.50 Section 1254.50 Parks, Forests, and Public Property NATIONAL ARCHIVES... Research Room Rules Other Conduct Rules § 1254.50 Does NARA consider reinstating research privileges? (a) You have 30 calendar days after the date of revocation to appeal the action in writing and seek...

36 CFR 1254.50 - Does NARA consider reinstating research privileges?

Code of Federal Regulations, 2011 CFR

2011-07-01

... reinstating research privileges? 1254.50 Section 1254.50 Parks, Forests, and Public Property NATIONAL ARCHIVES... Research Room Rules Other Conduct Rules § 1254.50 Does NARA consider reinstating research privileges? (a) You have 30 calendar days after the date of revocation to appeal the action in writing and seek...

36 CFR 1220.12 - What are NARA's records management responsibilities?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false What are NARA's records management responsibilities? 1220.12 Section 1220.12 Parks, Forests, and Public Property NATIONAL ARCHIVES... records), and assists Federal agencies in applying the standards to records in their custody. (c) Through...

36 CFR 1220.12 - What are NARA's records management responsibilities?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What are NARA's records management responsibilities? 1220.12 Section 1220.12 Parks, Forests, and Public Property NATIONAL ARCHIVES... records), and assists Federal agencies in applying the standards to records in their custody. (c) Through...

36 CFR 1220.12 - What are NARA's records management responsibilities?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false What are NARA's records management responsibilities? 1220.12 Section 1220.12 Parks, Forests, and Public Property NATIONAL ARCHIVES... records), and assists Federal agencies in applying the standards to records in their custody. (c) Through...

36 CFR 1220.12 - What are NARA's records management responsibilities?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false What are NARA's records management responsibilities? 1220.12 Section 1220.12 Parks, Forests, and Public Property NATIONAL ARCHIVES... records), and assists Federal agencies in applying the standards to records in their custody. (c) Through...

36 CFR 1250.56 - Fee schedule for NARA operational records.

Code of Federal Regulations, 2012 CFR

2012-07-01

..., the rate is $33 per hour (or fraction thereof) (2) Computer searching. This is the actual cost to NARA of operating the computer and the salary of the operator. When the search is relatively... issues regarding the application of exemptions. (c) Reproduction fees—(1) Self-service photocopying. At...

36 CFR 1250.56 - Fee schedule for NARA operational records.

Code of Federal Regulations, 2011 CFR

2011-07-01

..., the rate is $33 per hour (or fraction thereof) (2) Computer searching. This is the actual cost to NARA of operating the computer and the salary of the operator. When the search is relatively... issues regarding the application of exemptions. (c) Reproduction fees—(1) Self-service photocopying. At...

36 CFR 1250.56 - Fee schedule for NARA operational records.

Code of Federal Regulations, 2014 CFR

2014-07-01

..., the rate is $33 per hour (or fraction thereof) (2) Computer searching. This is the actual cost to NARA of operating the computer and the salary of the operator. When the search is relatively... issues regarding the application of exemptions. (c) Reproduction fees—(1) Self-service photocopying. At...

36 CFR 1284.20 - Does NARA exhibit privately-owned material?

Code of Federal Regulations, 2011 CFR

2011-07-01

... exhibition cases or other necessary fixtures; and (3) NARA has resources (such as exhibit and security staff) available to produce the special exhibit. (c) The Director of Museum Programs (NWE), in conjunction with the...) The Director of Museum Programs or director of the pertinent Presidential library will inform the...

36 CFR 1284.20 - Does NARA exhibit privately-owned material?

Code of Federal Regulations, 2014 CFR

2014-07-01

... exhibition cases or other necessary fixtures; and (3) NARA has resources (such as exhibit and security staff) available to produce the special exhibit. (c) The Director of Museum Programs (NWE), in conjunction with the...) The Director of Museum Programs or director of the pertinent Presidential library will inform the...

36 CFR 1284.20 - Does NARA exhibit privately-owned material?

Code of Federal Regulations, 2010 CFR

2010-07-01

... exhibition cases or other necessary fixtures; and (3) NARA has resources (such as exhibit and security staff) available to produce the special exhibit. (c) The Director of Museum Programs (NWE), in conjunction with the...) The Director of Museum Programs or director of the pertinent Presidential library will inform the...

36 CFR 1284.20 - Does NARA exhibit privately-owned material?

Code of Federal Regulations, 2012 CFR

2012-07-01

... exhibition cases or other necessary fixtures; and (3) NARA has resources (such as exhibit and security staff) available to produce the special exhibit. (c) The Director of Museum Programs (NWE), in conjunction with the...) The Director of Museum Programs or director of the pertinent Presidential library will inform the...

36 CFR § 1254.100 - How does NARA evaluate requests?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true How does NARA evaluate requests? § 1254.100 Section § 1254.100 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Microfilming Archival...

36 CFR 1254.110 - Does NARA ever rescind permission to microfilm?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false Does NARA ever rescind permission to microfilm? 1254.110 Section 1254.110 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS...

36 CFR 1254.110 - Does NARA ever rescind permission to microfilm?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Does NARA ever rescind permission to microfilm? 1254.110 Section 1254.110 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS...

36 CFR 1254.110 - Does NARA ever rescind permission to microfilm?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false Does NARA ever rescind permission to microfilm? 1254.110 Section 1254.110 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS...

36 CFR 1254.110 - Does NARA ever rescind permission to microfilm?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false Does NARA ever rescind permission to microfilm? 1254.110 Section 1254.110 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS...

36 CFR 1281.10 - When does a foundation consult with NARA before offering a gift of a physical or material change...

Code of Federal Regulations, 2012 CFR

2012-07-01

... library? 1281.10 Section 1281.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.10 When does a foundation consult with NARA before offering a gift of a physical or material change, or addition to an existing library? A foundation...

36 CFR 1281.10 - When does a foundation consult with NARA before offering a gift of a physical or material change...

Code of Federal Regulations, 2011 CFR

2011-07-01

... library? 1281.10 Section 1281.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.10 When does a foundation consult with NARA before offering a gift of a physical or material change, or addition to an existing library? A foundation...

36 CFR 1281.10 - When does a foundation consult with NARA before offering a gift of a physical or material change...

Code of Federal Regulations, 2010 CFR

2010-07-01

... library? 1281.10 Section 1281.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.10 When does a foundation consult with NARA before offering a gift of a physical or material change, or addition to an existing library? A foundation...

36 CFR 1281.10 - When does a foundation consult with NARA before offering a gift of a physical or material change...

Code of Federal Regulations, 2014 CFR

2014-07-01

... library? 1281.10 Section 1281.10 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES PRESIDENTIAL LIBRARY FACILITIES § 1281.10 When does a foundation consult with NARA before offering a gift of a physical or material change, or addition to an existing library? A foundation...

36 CFR § 1250.52 - How much will I have to pay for a FOIA request for NARA operational records?

Code of Federal Regulations, 2013 CFR

2013-07-01

... for a FOIA request for NARA operational records? § 1250.52 Section § 1250.52 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE PUBLIC AVAILABILITY AND USE OF FEDERAL RECORDS Fees § 1250.52 How much will I have to pay for a FOIA request for NARA...

36 CFR 1280.88 - How do I request to use NARA public areas in the National Archives at College Park?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false How do I request to use NARA public areas in the National Archives at College Park? 1280.88 Section 1280.88 Parks, Forests, and Public... Apply to Use NARA Public Areas in the Washington, DC, Area? National Archives at College Park, Md § 1280...

36 CFR 1280.88 - How do I request to use NARA public areas in the National Archives at College Park?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false How do I request to use NARA public areas in the National Archives at College Park? 1280.88 Section 1280.88 Parks, Forests, and Public... Apply to Use NARA Public Areas in the Washington, DC, Area? National Archives at College Park, Md § 1280...

36 CFR § 1284.20 - Does NARA exhibit privately-owned material?

Code of Federal Regulations, 2013 CFR

2013-07-01

... exhibition cases or other necessary fixtures; and (3) NARA has resources (such as exhibit and security staff) available to produce the special exhibit. (c) The Director of Museum Programs (NWE), in conjunction with the...) The Director of Museum Programs or director of the pertinent Presidential library will inform the...

36 CFR 1254.24 - Whom does NARA allow in research rooms?

Code of Federal Regulations, 2011 CFR

2011-07-01

... research rooms? 1254.24 Section 1254.24 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Research Room Rules General Procedures § 1254.24 Whom does NARA allow in research rooms? (a) We limit admission to research...

36 CFR 1254.24 - Whom does NARA allow in research rooms?

Code of Federal Regulations, 2014 CFR

2014-07-01

... research rooms? 1254.24 Section 1254.24 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Research Room Rules General Procedures § 1254.24 Whom does NARA allow in research rooms? (a) We limit admission to research...

36 CFR 1254.24 - Whom does NARA allow in research rooms?

Code of Federal Regulations, 2010 CFR

2010-07-01

... research rooms? 1254.24 Section 1254.24 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Research Room Rules General Procedures § 1254.24 Whom does NARA allow in research rooms? (a) We limit admission to research...

36 CFR 1254.24 - Whom does NARA allow in research rooms?

Code of Federal Regulations, 2012 CFR

2012-07-01

... research rooms? 1254.24 Section 1254.24 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS Research Room Rules General Procedures § 1254.24 Whom does NARA allow in research rooms? (a) We limit admission to research...

36 CFR § 1220.12 - What are NARA's records management responsibilities?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true What are NARA's records management responsibilities? § 1220.12 Section § 1220.12 Parks, Forests, and Public Property NATIONAL... records), and assists Federal agencies in applying the standards to records in their custody. (c) Through...

36 CFR 1250.26 - How quickly will NARA respond to my FOIA request?

Code of Federal Regulations, 2011 CFR

2011-07-01

... requesters of any complexity in processing their request, which may lengthen the time required to reach a final decision on the release of the records. (b) In most cases, NARA will make a decision on the...

Japan's Poetry Boxers Get Ready to Grumble

ERIC Educational Resources Information Center

McNeill, David

2008-01-01

This article reports that in Japan, a scholar of communications, in the hope of getting people to talk with one another, holds "boxing" competitions in which the blows are thrown verbally, in verse. In a crowded Yokohama hall, boxers file into a ring watched by cheering students and a panel of university professors. Nobody is predicting…

36 CFR 1202.66 - How does NARA keep account of disclosures?

Code of Federal Regulations, 2010 CFR

2010-07-01

...(a) and (b)), NARA keeps an accurate accounting of each disclosure and retains it for 5 years after the disclosure or for the life of the record, whichever is longer. The accounting includes the: (1... or agency to which the disclosure is made. (b) The system manager also maintains with the accounting...

36 CFR 1260.40 - How are records at NARA reviewed for declassification?

Code of Federal Regulations, 2010 CFR

2010-07-01

... Systematic Review § 1260.40 How are records at NARA reviewed for declassification? (a) Consistent with the... systematic reviews for declassification of records for which the originating agencies have provided declassification guidance. The originating agency must review records for which it has not provided...

36 CFR 1260.40 - How are records at NARA reviewed for declassification?

Code of Federal Regulations, 2011 CFR

2011-07-01

... Systematic Review § 1260.40 How are records at NARA reviewed for declassification? (a) Consistent with the... systematic reviews for declassification of records for which the originating agencies have provided declassification guidance. The originating agency must review records for which it has not provided...

36 CFR 1280.87 - Does NARA charge fees for the use of public areas in the National Archives at College Park?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false Does NARA charge fees for the use of public areas in the National Archives at College Park? 1280.87 Section 1280.87 Parks, Forests... College Park, Md § 1280.87 Does NARA charge fees for the use of public areas in the National Archives at...

36 CFR 1280.87 - Does NARA charge fees for the use of public areas in the National Archives at College Park?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Does NARA charge fees for the use of public areas in the National Archives at College Park? 1280.87 Section 1280.87 Parks, Forests... College Park, Md § 1280.87 Does NARA charge fees for the use of public areas in the National Archives at...

36 CFR 1260.56 - What are NARA considerations when implementing automatic declassification?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false What are NARA considerations when implementing automatic declassification? 1260.56 Section 1260.56 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION DECLASSIFICATION DECLASSIFICATION OF NATIONAL SECURITY INFORMATION Automatic Declassification §...

36 CFR 1254.98 - May NARA make subsequent use of my publication?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false May NARA make subsequent use of my publication? 1254.98 Section 1254.98 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS...

36 CFR 1254.98 - May NARA make subsequent use of my publication?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false May NARA make subsequent use of my publication? 1254.98 Section 1254.98 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS...

36 CFR 1254.98 - May NARA make subsequent use of my publication?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false May NARA make subsequent use of my publication? 1254.98 Section 1254.98 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS...

36 CFR 1254.98 - May NARA make subsequent use of my publication?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false May NARA make subsequent use of my publication? 1254.98 Section 1254.98 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL MATERIALS...

36 CFR § 1254.110 - Does NARA ever rescind permission to microfilm?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true Does NARA ever rescind permission to microfilm? § 1254.110 Section § 1254.110 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL...

36 CFR 1220.20 - What NARA acronyms are used throughout subchapter B?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What NARA acronyms are used throughout subchapter B? 1220.20 Section 1220.20 Parks, Forests, and Public Property NATIONAL ARCHIVES AND.... NAS means the Space and Security Management Division. NR means the Office of Regional Record Services...

36 CFR 1220.20 - What NARA acronyms are used throughout Subchapter B?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false What NARA acronyms are used throughout Subchapter B? 1220.20 Section 1220.20 Parks, Forests, and Public Property NATIONAL ARCHIVES AND.... NAS means the Space and Security Management Division. NR means the Office of Regional Record Services...

36 CFR 1254.62 - Does NARA have archival materials protected by copyright?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Does NARA have archival materials protected by copyright? 1254.62 Section 1254.62 Parks, Forests, and Public Property NATIONAL... protected by copyright? Yes, although many of our holdings are in the public domain as products of employees...

36 CFR 1254.62 - Does NARA have archival materials protected by copyright?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false Does NARA have archival materials protected by copyright? 1254.62 Section 1254.62 Parks, Forests, and Public Property NATIONAL... protected by copyright? Yes, although many of our holdings are in the public domain as products of employees...

36 CFR 1254.62 - Does NARA have archival materials protected by copyright?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false Does NARA have archival materials protected by copyright? 1254.62 Section 1254.62 Parks, Forests, and Public Property NATIONAL... protected by copyright? Yes, although many of our holdings are in the public domain as products of employees...

36 CFR 1254.62 - Does NARA have archival materials protected by copyright?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false Does NARA have archival materials protected by copyright? 1254.62 Section 1254.62 Parks, Forests, and Public Property NATIONAL... protected by copyright? Yes, although many of our holdings are in the public domain as products of employees...

Observation of the Zero Hall Plateau in a Quantum Anomalous Hall Insulator

DOE Office of Scientific and Technical Information (OSTI.GOV)

Feng, Yang; Feng, Xiao; Ou, Yunbo

We report experimental investigations on the quantum phase transition between the two opposite Hall plateaus of a quantum anomalous Hall insulator. We observe a well-defined plateau with zero Hall conductivity over a range of magnetic field around coercivity when the magnetization reverses. The features of the zero Hall plateau are shown to be closely related to that of the quantum anomalous Hall effect, but its temperature evolution exhibits a significant difference from the network model for a conventional quantum Hall plateau transition. We propose that the chiral edge states residing at the magnetic domain boundaries, which are unique to amore » quantum anomalous Hall insulator, are responsible for the novel features of the zero Hall plateau.« less

Anomalous Hall resistance in bilayer quantum Hall systems

NASA Astrophysics Data System (ADS)

Ezawa, Z. F.; Suzuki, S.; Tsitsishvili, G.

2007-07-01

We present a microscopic theory of the Hall current in the bilayer quantum Hall system on the basis of noncommutative geometry. By analyzing the Heisenberg equation of motion and the continuity equation of charge, we demonstrate the emergence of the phase current in a system where the interlayer phase coherence develops spontaneously. The phase current arranges itself to minimize the total energy of the system, as it induces certain anomalous behaviors in the Hall current in the counterflow geometry and also in the drag experiment. They explain the recent experimental data for anomalous Hall resistances due to Kellogg [Phys. Rev. Lett. 88, 126804 (2002); 93, 036801 (2004)] and Tutuc [Phys. Rev. Lett. 93, 036802 (2004)] at ν=1 .

5. View of Community Hall, first floor interior, entrance hall ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

5. View of Community Hall, first floor interior, entrance hall on east side of building, facing southeast. Ticket booth center foreground, stairway to auditorium right foreground. - Community Hall, Rainier Avenue & View Drive, Port Gamble, Kitsap County, WA

36 CFR 1254.108 - What are NARA's requirements for the microfilming process?

Code of Federal Regulations, 2014 CFR

2014-07-01

... responsibility for loss or damage to microfilm equipment or supplies you leave unattended. (j) We inspect the... refilm the records. (k) When you film 10,000 or fewer images, you must provide NARA with a silver halide duplicate negative upon completion of the project. When the project involves more than 10,000 images, you...

36 CFR 1254.108 - What are NARA's requirements for the microfilming process?

Code of Federal Regulations, 2010 CFR

2010-07-01

... responsibility for loss or damage to microfilm equipment or supplies you leave unattended. (j) We inspect the... refilm the records. (k) When you film 10,000 or fewer images, you must provide NARA with a silver halide duplicate negative upon completion of the project. When the project involves more than 10,000 images, you...

36 CFR 1254.108 - What are NARA's requirements for the microfilming process?

Code of Federal Regulations, 2012 CFR

2012-07-01

... responsibility for loss or damage to microfilm equipment or supplies you leave unattended. (j) We inspect the... refilm the records. (k) When you film 10,000 or fewer images, you must provide NARA with a silver halide duplicate negative upon completion of the project. When the project involves more than 10,000 images, you...

36 CFR 1254.108 - What are NARA's requirements for the microfilming process?

Code of Federal Regulations, 2011 CFR

2011-07-01

... responsibility for loss or damage to microfilm equipment or supplies you leave unattended. (j) We inspect the... refilm the records. (k) When you film 10,000 or fewer images, you must provide NARA with a silver halide duplicate negative upon completion of the project. When the project involves more than 10,000 images, you...

Management of a typhoon-induced landslide in Otomura (Japan)

NASA Astrophysics Data System (ADS)

Fujisawa, Kazunori; Marcato, Gianluca; Nomura, Yasuhiro; Pasuto, Alessandro

2010-12-01

Late in January 2004 slope instability evidence such as cracks and subsidence appeared on a retaining wall along National Highway 168, near Otomura (Nara Prefecture, Japan). This road plays a strategic role as a long distance route for passenger vehicles and trucks, therefore detailed investigations and constant surveillance have to be carried out in order to manage the induced risk situations. Six months later, on August 10th, a large landslide occurred due to heavy rainfalls related to typhoons #10 and #11 that hit Japan on the first week of August. Field and aerial surveys of the site were carried out soon after the appearance of the first geomorphologic evidence of landslide movements, and a monitoring system was immediately set up. Landslide displacements have been measured since the early stage of movement and road traffic was strictly controlled in order to minimize possible damage. This paper illustrates the effects of landslide activation and the investigations carried out in order to assess landslide hazard and predict the time of failure. Suitable methods for risk management oriented to increase the public safety and including risk control and crisis mitigation acts are also discussed.

36 CFR § 1254.108 - What are NARA's requirements for the microfilming process?

Code of Federal Regulations, 2013 CFR

2013-07-01

... you leave unattended. (j) We inspect the microform output at scheduled intervals during the project to... images, you must provide NARA with a silver halide duplicate negative upon completion of the project. When the project involves more than 10,000 images, you must provide a silver halide duplicate negative...

36 CFR § 1254.98 - May NARA make subsequent use of my publication?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true May NARA make subsequent use of my publication? § 1254.98 Section § 1254.98 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE USING RECORDS AND DONATED HISTORICAL...

36 CFR 1280.72 - What additional rules apply for a NARA approved event?

Code of Federal Regulations, 2011 CFR

2011-07-01

... for a NARA approved event? 1280.72 Section 1280.72 Parks, Forests, and Public Property NATIONAL... approved event? (a) Approved applicants must provide support people as needed to register guests... for the use of food and drink at your event. (d) No food or drink may be present or consumed in areas...

36 CFR 1280.72 - What additional rules apply for a NARA approved event?

Code of Federal Regulations, 2012 CFR

2012-07-01

... for a NARA approved event? 1280.72 Section 1280.72 Parks, Forests, and Public Property NATIONAL... approved event? (a) Approved applicants must provide support people as needed to register guests... for the use of food and drink at your event. (d) No food or drink may be present or consumed in areas...

36 CFR 1280.72 - What additional rules apply for a NARA approved event?

Code of Federal Regulations, 2014 CFR

2014-07-01

... for a NARA approved event? 1280.72 Section 1280.72 Parks, Forests, and Public Property NATIONAL... approved event? (a) Approved applicants must provide support people as needed to register guests... for the use of food and drink at your event. (d) No food or drink may be present or consumed in areas...

36 CFR 1202.28 - What rules do NARA employees follow in managing personal information?

Code of Federal Regulations, 2010 CFR

2010-07-01

... protection of nonpublic information in the Standards of Ethical Conduct for Employees of the Executive Branch... follow in managing personal information? 1202.28 Section 1202.28 Parks, Forests, and Public Property... Collecting Information § 1202.28 What rules do NARA employees follow in managing personal information? All...

36 CFR 1202.28 - What rules do NARA employees follow in managing personal information?

Code of Federal Regulations, 2011 CFR

2011-07-01

... protection of nonpublic information in the Standards of Ethical Conduct for Employees of the Executive Branch... follow in managing personal information? 1202.28 Section 1202.28 Parks, Forests, and Public Property... Collecting Information § 1202.28 What rules do NARA employees follow in managing personal information? All...

36 CFR 1284.30 - Does NARA lend documents to other institutions for exhibit purposes?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false Does NARA lend documents to other institutions for exhibit purposes? 1284.30 Section 1284.30 Parks, Forests, and Public Property... security, fire protection, environmental controls, packing and shipping, exhibit methods, and insurance...

36 CFR 1250.6 - Does FOIA cover all of the records at NARA?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Does FOIA cover all of the records at NARA? 1250.6 Section 1250.6 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS... Presidential records. Use the following chart to determine how to gain access: If you want access to ... Then...

36 CFR § 1254.62 - Does NARA have archival materials protected by copyright?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true Does NARA have archival materials protected by copyright? § 1254.62 Section § 1254.62 Parks, Forests, and Public Property NATIONAL... protected by copyright? Yes, although many of our holdings are in the public domain as products of employees...

Introductory Overview of Stone Heritages in Japan

NASA Astrophysics Data System (ADS)

Kato, Hirokazu; Oikawa, Teruki; Fujita, Masayo; Yokoyama, Shunji

2013-04-01

As one contribution to 'Global Heritage Stone Resources' (GHSR), some stone heritages in Japan, which are nominated in the interim list, are briefly introduced. The geology of Japanese Islands where are the one of the most active areas in the history of the Earth, is very complicated. Therefore Japanese Islands consist of various kinds of minerals and rocks. Some of them were used to make stone implements and accessories. Japanese people also used to the best possible advantage to built tombstone, gate, pavement ,and the basement and wall of the large building such as temples, shrines, castles and modern buildings. 1. Stone Heritages of Pre-historical age: In the late Pleistocene and the early Holocene, ancient Japanese used obsidian cooled rapidly from rhyolitic magma.to make small implements and accessories. For example, Shirataki, Hokkaido (north island) is the largest place producing obsidian in Japan where Paleolithic people made arrowhead, knives and so on. Another example, Jade yielded in Itoigawa City, Japan Sea coast of central Japan, was made in the metamorphic rock about five hundred million years ago. Itoigawa area is only one place where jade is abundantly produced in Japan. Ancient people had been already collected and processed to ornaments although it is very hard and traded in wide area more than several thousand years ago. 2. Stone Heritages of Historical age: 2.1 Archaeological remains: In the Kofun (old mound) period (250 to 538 AD), stone burial chambers were used for old mounds to preserve against the putrefaction and to protect from the theft. For example, Ishibutai Kofun ("ishi" means "stone" and "butai" means "stage") in Nara old capital city, southwest Japan, is the largest known megalithic structure made of granite in Japan. 2.2 Stone walls of some typical castles Stones used is because of not only the rich reserves of rocks but also restriction of transportation. Osaka (second biggest city) castle, are composed of Cretaceous granite

Farm Hall: The Play

NASA Astrophysics Data System (ADS)

Cassidy, David C.

2013-03-01

It's July 1945. Germany is in defeat and the atomic bombs are on their way to Japan. Under the direction of Samuel Goudsmit, the Allies are holding some of the top German nuclear scientists-among them Heisenberg, Hahn, and Gerlach-captive in Farm Hall, an English country manor near Cambridge, England. As secret microphones record their conversations, the scientists are unaware of why they are being held or for how long. Thinking themselves far ahead of the Allies, how will they react to the news of the atomic bombs? How will these famous scientists explain to themselves and to the world their failure to achieve even a chain reaction? How will they come to terms with the horror of the Third Reich, their work for such a regime, and their behavior during that period? This one-act play is based upon the transcripts of their conversations as well as the author's historical work on the subject.

Concert hall acoustics

NASA Astrophysics Data System (ADS)

Schroeder, Manfred

2004-05-01

I will review some work at Bell Laboratories on artificial reverberation and concert hall acoustics including Philharmonic Hall (Lincoln Center for the Performing Arts, New York). I will also touch on sound diffusion by number-theoretic surfaces and the measurement of reverberation time using the music as played in the hall as a ``test'' signal.

36 CFR 1250.26 - How quickly will NARA respond to my FOIA request?

Code of Federal Regulations, 2010 CFR

2010-07-01

... making a decision within 20 working days, we will inform you in writing how long it will take us to... requesters of any complexity in processing their request, which may lengthen the time required to reach a final decision on the release of the records. (b) In most cases, NARA will make a decision on the...

36 CFR 1233.18 - What reference procedures are used in NARA Federal Records Centers?

Code of Federal Regulations, 2010 CFR

2010-07-01

... designated by that agency and NARA, or their electronic equivalents. (c) For civilian personnel records... (electronic equivalent of the SF 180). Access to eMilrecs and additional information is available on line at... available on line at: http://www.archives.gov/veterans/evetrecs. (3) Members of the public and non...

36 CFR 1233.18 - What reference procedures are used in NARA Federal Records Centers?

Code of Federal Regulations, 2014 CFR

2014-07-01

... designated by that agency and NARA, or their electronic equivalents. (c) For civilian personnel records... (electronic equivalent of the SF 180). Access to eMilrecs and additional information is available on line at... available on line at: http://www.archives.gov/veterans/evetrecs. (3) Members of the public and non...

36 CFR 1233.18 - What reference procedures are used in NARA Federal Records Centers?

Code of Federal Regulations, 2011 CFR

2011-07-01

... designated by that agency and NARA, or their electronic equivalents. (c) For civilian personnel records... (electronic equivalent of the SF 180). Access to eMilrecs and additional information is available on line at... available on line at: http://www.archives.gov/veterans/evetrecs. (3) Members of the public and non...

36 CFR 1233.18 - What reference procedures are used in NARA Federal Records Centers?

Code of Federal Regulations, 2012 CFR

2012-07-01

... designated by that agency and NARA, or their electronic equivalents. (c) For civilian personnel records... (electronic equivalent of the SF 180). Access to eMilrecs and additional information is available on line at... available on line at: http://www.archives.gov/veterans/evetrecs. (3) Members of the public and non...

36 CFR 1230.16 - How does NARA handle allegations of unlawful or accidental removal, defacing, alteration, or...

Code of Federal Regulations, 2010 CFR

2010-07-01

... receiving any credible information that records are at risk of actual, impending, or threatened damage, alienation, or unauthorized destruction, NARA will contact the agency as follows: (a) If the threat has not...

36 CFR § 1280.72 - What additional rules apply for a NARA approved event?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true What additional rules apply for a NARA approved event? § 1280.72 Section § 1280.72 Parks, Forests, and Public Property NATIONAL..., distribute approved literature, name tags, and other material. (b) We must approve in advance any item that...

36 CFR 1254.12 - Will NARA log or inspect my computer, other equipment, and notes?

Code of Federal Regulations, 2012 CFR

2012-07-01

... computer, other equipment, and notes? 1254.12 Section 1254.12 Parks, Forests, and Public Property NATIONAL... MATERIALS General Information § 1254.12 Will NARA log or inspect my computer, other equipment, and notes? (a) If you bring personal computers, scanners, tape recorders, cameras, and other equipment into our...

36 CFR 1254.12 - Will NARA log or inspect my computer, other equipment, and notes?

Code of Federal Regulations, 2014 CFR

2014-07-01

... computer, other equipment, and notes? 1254.12 Section 1254.12 Parks, Forests, and Public Property NATIONAL... MATERIALS General Information § 1254.12 Will NARA log or inspect my computer, other equipment, and notes? (a) If you bring personal computers, scanners, tape recorders, cameras, and other equipment into our...

36 CFR 1254.12 - Will NARA log or inspect my computer, other equipment, and notes?

Code of Federal Regulations, 2011 CFR

2011-07-01

... computer, other equipment, and notes? 1254.12 Section 1254.12 Parks, Forests, and Public Property NATIONAL... MATERIALS General Information § 1254.12 Will NARA log or inspect my computer, other equipment, and notes? (a) If you bring personal computers, scanners, tape recorders, cameras, and other equipment into our...

36 CFR 1254.12 - Will NARA log or inspect my computer, other equipment, and notes?

Code of Federal Regulations, 2010 CFR

2010-07-01

... computer, other equipment, and notes? 1254.12 Section 1254.12 Parks, Forests, and Public Property NATIONAL... MATERIALS General Information § 1254.12 Will NARA log or inspect my computer, other equipment, and notes? (a) If you bring personal computers, scanners, tape recorders, cameras, and other equipment into our...

Topological Hall and Spin Hall Effects in Disordered Skyrmionic Textures

NASA Astrophysics Data System (ADS)

Ndiaye, Papa Birame; Akosa, Collins; Manchon, Aurelien; Spintronics Theory Group Team

We carry out a throughout study of the topological Hall and topological spin Hall effects in disordered skyrmionic systems: the dimensionless (spin) Hall angles are evaluated across the energy band structure in the multiprobe Landauer-Büttiker formalism and their link to the effective magnetic field emerging from the real space topology of the spin texture is highlighted. We discuss these results for an optimal skyrmion size and for various sizes of the sample and found that the adiabatic approximation still holds for large skyrmions as well as for few atomic size-nanoskyrmions. Finally, we test the robustness of the topological signals against disorder strength and show that topological Hall effect is highly sensitive to momentum scattering. This work was supported by the King Abdullah University of Science and Technology (KAUST) through the Award No OSR-CRG URF/1/1693-01 from the Office of Sponsored Research (OSR).

36 CFR 1280.102 - When do NARA regional records services facilities allow other groups to use their public areas...

Code of Federal Regulations, 2010 CFR

2010-07-01

... public areas for events? (a) Although NARA regional records services facility auditoriums and other... auditoriums or other public spaces for any activities that involve: (1) Profit making; (2) Commercial...

36 CFR 1280.102 - When do NARA regional records services facilities allow other groups to use their public areas...

Code of Federal Regulations, 2011 CFR

2011-07-01

... public areas for events? (a) Although NARA regional records services facility auditoriums and other... auditoriums or other public spaces for any activities that involve: (1) Profit making; (2) Commercial...

36 CFR 1280.102 - When do NARA regional records services facilities allow other groups to use their public areas...

Code of Federal Regulations, 2012 CFR

2012-07-01

... public areas for events? (a) Although NARA regional records services facility auditoriums and other... auditoriums or other public spaces for any activities that involve: (1) Profit making; (2) Commercial...

36 CFR 1280.102 - When do NARA regional records services facilities allow other groups to use their public areas...

Code of Federal Regulations, 2014 CFR

2014-07-01

... public areas for events? (a) Although NARA regional records services facility auditoriums and other... auditoriums or other public spaces for any activities that involve: (1) Profit making; (2) Commercial...

36 CFR 1202.20 - What advisory information does NARA provide before collecting information from me?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What advisory information does NARA provide before collecting information from me? 1202.20 Section 1202.20 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES REGULATIONS IMPLEMENTING THE PRIVACY ACT OF 1974 Collecting Information §...

Facility Focus: Residence Halls.

ERIC Educational Resources Information Center

College Planning & Management, 2002

2002-01-01

Describes residence halls seeking to meet needs beyond traditional mass housing for the 18- to 22-year-old students: Whittemore Hall at the Tuck School of Business at Dartmouth College (for older students); Small Group Housing at Washington University (grouping students with common interests); and the renovation of the residence hall at Boston's…

Astronaut Hall of Fame

NASA Image and Video Library

2018-04-21

Scott D. Altman, second from left, is inducted into the Astronaut Hall of Fame (AHOF) during a ceremony inside the Space Shuttle Atlantis attraction at NASA's Kennedy Space Center Visitor Complex in Florida. At far left, Hall of Famer Curt Brown, board chairman, Astronaut Scholarship Foundation (ASF), inducts Altman into the Hall of Fame Class of 2018. At right is Hall of Famer John Grunsfeld, who spoke on Altman's behalf during the ceremony. At far right is Thomas D. Jones, Ph.D., who also was inducted into the AHOF Class of 2018. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot or mission specialist who has orbited the earth at least once. Including Altman and Jones, 97 astronauts have been inducted into the AHOF.

Astronaut Hall of Fame

NASA Image and Video Library

2018-04-21

Thomas D. Jones, Ph.D., in the center, is inducted into the Astronaut Hall of Fame (AHOF) during a ceremony inside the Space Shuttle Atlantis attraction at NASA’s Kennedy Space Center Visitor Complex in Florida. At left, Hall of Famer Curt Brown, board chairman, Astronaut Scholarship Foundation (ASF), inducts Jones into the Hall of Fame Class of 2018. At right is Hall of Famer Storey Musgrave, who spoke on Jones behalf during the ceremony. Also inducted was retired astronaut Scott D. Altman. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot or mission specialist who has orbited the earth at least once. Including Altman and Jones, 97 astronauts have been inducted into the AHOF.

NASA's 2004 Hall Thruster Program

NASA Technical Reports Server (NTRS)

Jacobson, David T.; Manzella, David H.; Hofer, Richard R.; Peterson, Peter Y.

2004-01-01

An overview of NASA's Hall thruster research and development tasks conducted during fiscal year 2004 is presented. These tasks focus on: raising the technology readiness level of high power Hall thrusters, developing a moderate-power/ moderate specific impulse Hall thruster, demonstrating high-power/high specific impulse Hall thruster operation, and addressing the fundamental technical challenges of emerging Hall thruster concepts. Programmatic background information, technical accomplishments and out year plans for each program element performed under the sponsorship of the In-Space Transportation Program, Project Prometheus, and the Energetics Project are provided.

36 CFR 1250.12 - What types of records are available in NARA's FOIA Reading Room?

Code of Federal Regulations, 2014 CFR

2014-07-01

... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false What types of records are available in NARA's FOIA Reading Room? 1250.12 Section 1250.12 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE PUBLIC AVAILABILITY AND USE OF FEDERAL RECORDS General Information About Freedom...

36 CFR 1250.12 - What types of records are available in NARA's FOIA Reading Room?

Code of Federal Regulations, 2012 CFR

2012-07-01

... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false What types of records are available in NARA's FOIA Reading Room? 1250.12 Section 1250.12 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE PUBLIC AVAILABILITY AND USE OF FEDERAL RECORDS General Information About Freedom...

36 CFR 1250.28 - Will NARA ever expedite the review of the records I requested?

Code of Federal Regulations, 2010 CFR

2010-07-01

... review of the records I requested? 1250.28 Section 1250.28 Parks, Forests, and Public Property NATIONAL... RECORDS How To Access Records Under FOIA § 1250.28 Will NARA ever expedite the review of the records I... individual's life or physical safety; (2) A reasonable expectation of an imminent loss of a substantial due...

36 CFR 1230.16 - How does NARA handle allegations of unlawful or accidental removal, defacing, alteration, or...

Code of Federal Regulations, 2014 CFR

2014-07-01

... Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT UNLAWFUL OR ACCIDENTAL REMOVAL, DEFACING, ALTERATION, OR DESTRUCTION OF RECORDS § 1230.16 How does NARA... receiving any credible information that records are at risk of actual, impending, or threatened damage...

36 CFR 1230.16 - How does NARA handle allegations of unlawful or accidental removal, defacing, alteration, or...

Code of Federal Regulations, 2011 CFR

2011-07-01

... Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT UNLAWFUL OR ACCIDENTAL REMOVAL, DEFACING, ALTERATION, OR DESTRUCTION OF RECORDS § 1230.16 How does NARA... receiving any credible information that records are at risk of actual, impending, or threatened damage...

36 CFR 1230.16 - How does NARA handle allegations of unlawful or accidental removal, defacing, alteration, or...

Code of Federal Regulations, 2012 CFR

2012-07-01

... Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT UNLAWFUL OR ACCIDENTAL REMOVAL, DEFACING, ALTERATION, OR DESTRUCTION OF RECORDS § 1230.16 How does NARA... receiving any credible information that records are at risk of actual, impending, or threatened damage...

36 CFR § 1254.12 - Will NARA log or inspect my computer, other equipment, and notes?

Code of Federal Regulations, 2013 CFR

2013-07-01

... computer, other equipment, and notes? § 1254.12 Section § 1254.12 Parks, Forests, and Public Property... HISTORICAL MATERIALS General Information § 1254.12 Will NARA log or inspect my computer, other equipment, and notes? (a) If you bring personal computers, scanners, tape recorders, cameras, and other equipment into...

36 CFR 1233.12 - How does an agency transfer vital records to a NARA Federal Records Center?

Code of Federal Regulations, 2011 CFR

2011-07-01

... Regional Records Services, 8601 Adelphi Road, College Park, MD or phone (301) 837-2950. The actual... vital records to a NARA Federal Records Center? 1233.12 Section 1233.12 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT TRANSFER, USE, AND DISPOSITION OF...

36 CFR 1233.12 - How does an agency transfer vital records to a NARA Federal Records Center?

Code of Federal Regulations, 2012 CFR

2012-07-01

... Regional Records Services, 8601 Adelphi Road, College Park, MD or phone (301) 837-2950. The actual... vital records to a NARA Federal Records Center? 1233.12 Section 1233.12 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT TRANSFER, USE, AND DISPOSITION OF...

36 CFR 1233.12 - How does an agency transfer vital records to a NARA Federal Records Center?

Code of Federal Regulations, 2014 CFR

2014-07-01

... Regional Records Services, 8601 Adelphi Road, College Park, MD or phone (301) 837-2950. The actual... vital records to a NARA Federal Records Center? 1233.12 Section 1233.12 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT TRANSFER, USE, AND DISPOSITION OF...

36 CFR 1233.12 - How does an agency transfer vital records to a NARA Federal Records Center?

Code of Federal Regulations, 2010 CFR

2010-07-01

... Regional Records Services, 8601 Adelphi Road, College Park, MD or phone (301) 837-2950. The actual... vital records to a NARA Federal Records Center? 1233.12 Section 1233.12 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT TRANSFER, USE, AND DISPOSITION OF...

36 CFR 1260.44 - Will NARA loan accessioned records back to the agencies to conduct declassification review?

Code of Federal Regulations, 2010 CFR

2010-07-01

... NATIONAL SECURITY INFORMATION Systematic Review § 1260.44 Will NARA loan accessioned records back to the agencies to conduct declassification review? In rare cases, when agency reviewers cannot be accommodated at... records back to the agencies to conduct declassification review? 1260.44 Section 1260.44 Parks, Forests...

36 CFR 1260.44 - Will NARA loan accessioned records back to the agencies to conduct declassification review?

Code of Federal Regulations, 2011 CFR

2011-07-01

... NATIONAL SECURITY INFORMATION Systematic Review § 1260.44 Will NARA loan accessioned records back to the agencies to conduct declassification review? In rare cases, when agency reviewers cannot be accommodated at... records back to the agencies to conduct declassification review? 1260.44 Section 1260.44 Parks, Forests...

36 CFR § 1280.102 - When do NARA regional records services facilities allow other groups to use their public areas...

Code of Federal Regulations, 2013 CFR

2013-07-01

... their public areas for events? (a) Although NARA regional records services facility auditoriums and... allow use of any auditoriums or other public spaces for any activities that involve: (1) Profit making...

[The origination of surgery (Kinso treatment) in Japan].

PubMed

Sugiyama, Shigeru

2008-01-01

From the Nara period through to the end of the Heian and early Kamakura periods, the population of Japan grew by 50% thanks to increases in rice cultivation. Such expanded food production resulted in changes in the social structure providing opportunities to those in control of armed forces to become local feudal lords. Many wars fought in the process necessitated the development of treatment methods for Kinso (wounds caused by swords, spears, and similar weapons), to which Jinsoes (Buddhist monks/doctors that accompanied troops) attended, making extensive use of herbal medicine that had been developed by the people of the time. Many war commanders brought Jinsoes to battle fields, which became a custom during the Sengoku (warring) period. As many of the Jinsoes were well educated, they also served as entertainers to the commanders through their knowledge in Go or Renga (a game involving popular poetical verses). Their talents and training eventually resulted in many of the so called traditional arts including Noh, Kabuki, tea ceremony and earthenware production.

Astronaut Hall of Fame

NASA Image and Video Library

2018-04-21

Inside the Space Shuttle Atlantis attraction at NASA’s Kennedy Space Center Visitor Complex in Florida, two space explorers, Scott D. Altman, second from left, and Thomas D. Jones, Ph.D., far right, are inducted into the U.S. Astronaut Hall of Fame Class of 2018. At far left is Hall of Famer Curt Brown, board chairman, Astronaut Scholarship Foundation, who inducted Altman and Jones into the AHOF. Second from right is Hall of Famer John Grunsfeld, who spoke on behalf of Altman during the ceremony. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot or mission specialist who has orbited the earth at least once. Including Altman and Jones, 97 astronauts have been inducted into the AHOF.

The relationship between suicide and five climate issues in a large-scale and long-term study in Japan.

PubMed

Inoue, K; Nishimura, Y; Fujita, Y; Ono, Y; Fukunaga, T

2012-08-01

Suicide rates in Japan were high in 1998 and have remained high since then. Many researchers have discussed the current state of suicide in Japan and the world; however, there are various opinions about the relationship between suicide and climate. In the present study, we report on long-term data of suicide and examine five climatic issues in Japan as a whole and in 10 selected prefectures: the five with the highest suicide rates in 2006 (Akita, Iwate, Shimane, Yamagata and Miyazaki Prefectures) and the five with the lowest (Nara, Tokushima, Okayama, Kanagawa and Kyoto Prefectures). Annual age-adjusted suicide rates were found to have a significant inverse correlation with annual mean air temperature in the five prefectures with the highest suicide rates and in the three prefectures with the lowest suicide rates among women. Annual age-adjusted suicide rates were significantly correlated with annual mean relative humidity in the three prefectures with the highest suicide rates among women and with the annual total sunshine duration in the three prefectures with the highest suicide rates among women. It is important that these associations between suicide and climatic factors be discussed further from various viewpoints, including those of many researchers and relevant organizations.

36 CFR § 1250.12 - What types of records are available in NARA's FOIA Reading Room?

Code of Federal Regulations, 2013 CFR

2013-07-01

... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true What types of records are available in NARA's FOIA Reading Room? § 1250.12 Section § 1250.12 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE PUBLIC AVAILABILITY AND USE OF FEDERAL RECORDS General Information About...

NASA's Hall Thruster Program 2002

NASA Technical Reports Server (NTRS)

Jankovsky, Robert S.; Jacobson, David T.; Pinero, Luis R.; Manzella, David H.; Hofer, Richard R.; Peterson, Peter Y.

2002-01-01

The NASA Hall thruster program currently supports a number of tasks related to high power thruster development for a number of customers including the Energetics Program (formerly called the Space-based Program), the Space Solar Power Program, and the In-space Propulsion Program. In program year 2002, two tasks were central to the NASA Hall thruster program: 1) the development of a laboratory Hall thruster capable of providing high thrust at high power-, and 2) investigations into operation of Hall thrusters at high specific impulse. In addition to these two primary thruster development activities, there are a number of other on-going activities supported by the NASA Hall thruster program. These additional activities are related to issues such as high-power power processor architecture, thruster lifetime, and spacecraft integration.

Not your grandfather's concert hall

NASA Astrophysics Data System (ADS)

Cooper, Russell; Malenka, Richard; Griffith, Charles; Friedlander, Steven

2004-05-01

The opening of Judy and Arthur Zankel Hall on 12 September 2003, restores Andrew Carnegie's original 1891 concept of having three outstanding auditoriums of different sizes under one roof, and creates a 21st-century venue for music performance and education. With concerts ranging from early music to avant-garde multimedia productions, from jazz to world music, and from solo recitals to chamber music, Zankel Hall expands the breadth and depth of Carnegie Hall's offerings. It allows for the integration of programming across three halls with minifestivals tailored both to the size and strengths of each hall and to the artists and music to be performed. The new flexible space also provides Carnegie Hall with an education center equipped with advanced communications technology. This paper discusses the unique program planned for this facility and how the architects, theatre consultants, and acousticians developed a design that fulfilled the client's expectations and coordinated the construction of the facility under the floor of the main Isaac Stern Auditorium without having to cancel a single performance.

36 CFR 1280.52 - What are the rules for filming, photographing, or videotaping on NARA property for news purposes?

Code of Federal Regulations, 2011 CFR

2011-07-01

... facilities. (i) We will limit your film and photography sessions to two hours. (j) You may not state or imply... images depicting any NARA facility. [65 FR 34978, June 1, 2000, as amended at 73 FR 36794, June 30, 2008] ...

36 CFR 1280.52 - What are the rules for filming, photographing, or videotaping on NARA property for news purposes?

Code of Federal Regulations, 2014 CFR

2014-07-01

... facilities. (i) We will limit your film and photography sessions to two hours. (j) You may not state or imply... images depicting any NARA facility. [65 FR 34978, June 1, 2000, as amended at 73 FR 36794, June 30, 2008] ...

36 CFR 1280.52 - What are the rules for filming, photographing, or videotaping on NARA property for news purposes?

Code of Federal Regulations, 2012 CFR

2012-07-01

... facilities. (i) We will limit your film and photography sessions to two hours. (j) You may not state or imply... images depicting any NARA facility. [65 FR 34978, June 1, 2000, as amended at 73 FR 36794, June 30, 2008] ...

36 CFR 1280.52 - What are the rules for filming, photographing, or videotaping on NARA property for news purposes?

Code of Federal Regulations, 2010 CFR

2010-07-01

... facilities. (i) We will limit your film and photography sessions to two hours. (j) You may not state or imply... images depicting any NARA facility. [65 FR 34978, June 1, 2000, as amended at 73 FR 36794, June 30, 2008] ...

NASA's Hall Thruster Program

NASA Technical Reports Server (NTRS)

Jankovsky, Robert S.; Jacobson, David T.; Rawlin, Vincent K.; Mason, Lee S.; Mantenieks, Maris A.; Manzella, David H.; Hofer, Richard R.; Peterson, Peter Y.

2001-01-01

NASA's Hall thruster program has base research and focused development efforts in support of the Advanced Space Transportation Program, Space-Based Program, and various other programs. The objective of the base research is to gain an improved understanding of the physical processes and engineering constraints of Hall thrusters to enable development of advanced Hall thruster designs. Specific technical questions that are current priorities of the base effort are: (1) How does thruster life vary with operating point? (2) How can thruster lifetime and wear rate be most efficiently evaluated? (3) What are the practical limitations for discharge voltage as it pertains to high specific impulse operation (high discharge voltage) and high thrust operation (low discharge voltage)? (4) What are the practical limits for extending Hall thrusters to very high input powers? and (5) What can be done during thruster design to reduce cost and integration concerns? The objective of the focused development effort is to develop a 50 kW-class Hall propulsion system, with a milestone of a 50 kW engineering model thruster/system by the end of program year 2006. Specific program wear 2001 efforts, along with the corporate and academic participation, are described.

36 CFR 1256.74 - How does NARA process Freedom of Information Act (FOIA) requests for classified information?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false How does NARA process Freedom of Information Act (FOIA) requests for classified information? 1256.74 Section 1256.74 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION PUBLIC AVAILABILITY AND USE ACCESS TO RECORDS AND DONATED HISTORICAL MATERIALS...

Spin Hall effects

NASA Astrophysics Data System (ADS)

Sinova, Jairo; Valenzuela, Sergio O.; Wunderlich, J.; Back, C. H.; Jungwirth, T.

2015-10-01

Spin Hall effects are a collection of relativistic spin-orbit coupling phenomena in which electrical currents can generate transverse spin currents and vice versa. Despite being observed only a decade ago, these effects are already ubiquitous within spintronics, as standard spin-current generators and detectors. Here the theoretical and experimental results that have established this subfield of spintronics are reviewed. The focus is on the results that have converged to give us the current understanding of the phenomena, which has evolved from a qualitative to a more quantitative measurement of spin currents and their associated spin accumulation. Within the experimental framework, optical-, transport-, and magnetization-dynamics-based measurements are reviewed and linked to both phenomenological and microscopic theories of the effect. Within the theoretical framework, the basic mechanisms in both the extrinsic and intrinsic regimes are reviewed, which are linked to the mechanisms present in their closely related phenomenon in ferromagnets, the anomalous Hall effect. Also reviewed is the connection to the phenomenological treatment based on spin-diffusion equations applicable to certain regimes, as well as the spin-pumping theory of spin generation used in many measurements of the spin Hall angle. A further connection to the spin-current-generating spin Hall effect to the inverse spin galvanic effect is given, in which an electrical current induces a nonequilibrium spin polarization. This effect often accompanies the spin Hall effect since they share common microscopic origins. Both can exhibit the same symmetries when present in structures comprising ferromagnetic and nonmagnetic layers through their induced current-driven spin torques or induced voltages. Although a short chronological overview of the evolution of the spin Hall effect field and the resolution of some early controversies is given, the main body of this review is structured from a pedagogical

Tunneling Anomalous and Spin Hall Effects.

PubMed

Matos-Abiague, A; Fabian, J

2015-07-31

We predict, theoretically, the existence of the anomalous Hall effect when a tunneling current flows through a tunnel junction in which only one of the electrodes is magnetic. The interfacial spin-orbit coupling present in the barrier region induces a spin-dependent momentum filtering in the directions perpendicular to the tunneling current, resulting in a skew tunneling even in the absence of impurities. This produces an anomalous Hall conductance and spin Hall currents in the nonmagnetic electrode when a bias voltage is applied across the tunneling heterojunction. If the barrier is composed of a noncentrosymmetric material, the anomalous Hall conductance and spin Hall currents become anisotropic with respect to both the magnetization and crystallographic directions, allowing us to separate this interfacial phenomenon from the bulk anomalous and spin Hall contributions. The proposed effect should be useful for proving and quantifying the interfacial spin-orbit fields in metallic and metal-semiconductor systems.

Synchronization of spin-transfer torque oscillators by spin pumping, inverse spin Hall, and spin Hall effects

DOE Office of Scientific and Technical Information (OSTI.GOV)

Elyasi, Mehrdad; Bhatia, Charanjit S.; Yang, Hyunsoo, E-mail: eleyang@nus.edu.sg

2015-02-14

We have proposed a method to synchronize multiple spin-transfer torque oscillators based on spin pumping, inverse spin Hall, and spin Hall effects. The proposed oscillator system consists of a series of nano-magnets in junction with a normal metal with high spin-orbit coupling, and an accumulative feedback loop. We conduct simulations to demonstrate the effect of modulated charge currents in the normal metal due to spin pumping from each nano-magnet. We show that the interplay between the spin Hall effect and inverse spin Hall effect results in synchronization of the nano-magnets.

Development Status of the Helicon Hall Thruster

DTIC Science & Technology

2009-09-15

Hall thruster , the Helicon Hall Thruster , is presented. The Helicon Hall Thruster combines the efficient ionization mechanism of a helicon source with the favorable plasma acceleration properties of a Hall thruster . Conventional Hall thrusters rely on direct current electron bombardment to ionize the flow in order to generate thrust. Electron bombardment typically results in an ionization cost that can be on the order of ten times the ionization potential, leading to reduced efficiency, particularly at low

36 CFR § 1233.12 - How does an agency transfer vital records to a NARA Federal Records Center?

Code of Federal Regulations, 2013 CFR

2013-07-01

... Regional Records Services, 8601 Adelphi Road, College Park, MD or phone (301) 837-2950. The actual... vital records to a NARA Federal Records Center? § 1233.12 Section § 1233.12 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION RECORDS MANAGEMENT TRANSFER, USE, AND DISPOSITION OF...

A non-invasive Hall current distribution measurement system for Hall Effect thrusters

NASA Astrophysics Data System (ADS)

Mullins, Carl Raymond

A direct, accurate method to measure thrust produced by a Hall Effect thruster on orbit does not currently exist. The ability to calculate produced thrust will enable timely and precise maneuvering of spacecraft---a capability particularly important to satellite formation flying. The means to determine thrust directly is achievable by remotely measuring the magnetic field of the thruster and solving the inverse magnetostatic problem for the Hall current density distribution. For this thesis, the magnetic field was measured by employing an array of eight tunneling magnetoresistive (TMR) sensors capable of milligauss sensitivity when placed in a high background field. The array was positioned outside the channel of a 1.5 kW Colorado State University Hall thruster equipped with a center-mounted electride cathode. In this location, the static magnetic field is approximately 30 Gauss, which is within the linear operating range of the TMR sensors. Furthermore, the induced field at this distance is greater than tens of milligauss, which is within the sensitivity range of the TMR sensors. Due to the nature of the inverse problem, the induced-field measurements do not provide the Hall current density by a simple inversion; however, a Tikhonov regularization of the induced field along with a non-negativity constraint and a zero boundary condition provides current density distributions. Our system measures the sensor outputs at 2 MHz allowing the determination of the Hall current density distribution as a function of time. These data are shown in contour plots in sequential frames. The measured ratios between the average Hall current and the discharge current ranged from 0.1 to 10 over a range of operating conditions from 1.3 kW to 2.2 kW. The temporal inverse solution at 2.0 kW exhibited a breathing mode of 37 kHz, which was in agreement with temporal measurements of the discharge current.

Hall viscosity of hierarchical quantum Hall states

NASA Astrophysics Data System (ADS)

Fremling, M.; Hansson, T. H.; Suorsa, J.

2014-03-01

Using methods based on conformal field theory, we construct model wave functions on a torus with arbitrary flat metric for all chiral states in the abelian quantum Hall hierarchy. These functions have no variational parameters, and they transform under the modular group in the same way as the multicomponent generalizations of the Laughlin wave functions. Assuming the absence of Berry phases upon adiabatic variations of the modular parameter τ, we calculate the quantum Hall viscosity and find it to be in agreement with the formula, given by Read, which relates the viscosity to the average orbital spin of the electrons. For the filling factor ν =2/5 Jain state, which is at the second level in the hierarchy, we compare our model wave function with the numerically obtained ground state of the Coulomb interaction Hamiltonian in the lowest Landau level, and find very good agreement in a large region of the complex τ plane. For the same example, we also numerically compute the Hall viscosity and find good agreement with the analytical result for both the model wave function and the numerically obtained Coulomb wave function. We argue that this supports the notion of a generalized plasma analogy that would ensure that wave functions obtained using the conformal field theory methods do not acquire Berry phases upon adiabatic evolution.

Astronaut Hall of Fame

NASA Image and Video Library

2018-04-21

Kelvin Manning, associate director of NASA's Kennedy Space Center in Florida, welcomes guests to the 2018 U.S. Astronaut Hall of Fame (AHOF) Induction inside the Space Shuttle Atlantis attraction at the Kennedy Space Center Visitor Complex (KSCVC). Two veteran space explorers were inducted into the Hall of Fame Class of 2018. They are Scott D. Altman and Thomas D. Jones, Ph.D. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot or mission specialist who has orbited the earth at least once. Including Altman and Jones, 97 astronauts have been inducted into the AHOF.

Astronaut Hall of Fame

NASA Image and Video Library

2018-04-21

Former astronauts and space explorers Scott D. Altman, at left, and Thomas D. Jones, Ph.D., are inducted into the U.S. Astronaut Hall of Fame Class of 2018 during a ceremony inside the Space Shuttle Atlantis attraction at NASA’s Kennedy Space Center Visitor Complex in Florida. They unveiled their plaques, which will be placed in Hall of Fame at the visitor complex. At far right is Master of Ceremonies, John Zarella, former CNN space correspondent. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot or mission specialist who has orbited the earth at least once. Including Altman and Jones, 97 astronauts have been inducted into the AHOF.

Astronaut Hall of Fame

NASA Image and Video Library

2018-04-21

Former astronauts and space explorers Scott D. Altman, at left, and Thomas D. Jones, Ph.D., are inducted into the U.S. Astronaut Hall of Fame Class of 2018 during a ceremony inside the Space Shuttle Atlantis attraction at NASA’s Kennedy Space Center Visitor Complex in Florida. They unveiled their plaques, which will be placed in the Hall of Fame at the visitor complex. At far right is Master of Ceremonies, John Zarella, former CNN space correspondent. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot or mission specialist who has orbited the earth at least once. Including Altman and Jones, 97 astronauts have been inducted into the AHOF.

36 CFR § 1280.52 - What are the rules for filming, photographing, or videotaping on NARA property for news purposes?

Code of Federal Regulations, 2013 CFR

2013-07-01

... facilities. (i) We will limit your film and photography sessions to two hours. (j) You may not state or imply... images depicting any NARA facility. [65 FR 34978, June 1, 2000, as amended at 73 FR 36794, June 30, 2008] ...

36 CFR 1260.50 - What procedures does NARA follow when it receives a request for Executive Branch records under...

Code of Federal Regulations, 2011 CFR

2011-07-01

... the requested records are more than 25 years old, NARA will review the records using systematic... follow when it receives a request for Executive Branch records under mandatory review? 1260.50 Section... DECLASSIFICATION DECLASSIFICATION OF NATIONAL SECURITY INFORMATION Mandatory Review § 1260.50 What procedures does...

36 CFR 1260.42 - What are the procedures for agency personnel to review records at a NARA facility?

Code of Federal Regulations, 2010 CFR

2010-07-01

... SECURITY INFORMATION Systematic Review § 1260.42 What are the procedures for agency personnel to review... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What are the procedures for agency personnel to review records at a NARA facility? 1260.42 Section 1260.42 Parks, Forests, and Public...

Nondestructive hall coefficient measurements using ACPD techniques

NASA Astrophysics Data System (ADS)

Velicheti, Dheeraj; Nagy, Peter B.; Hassan, Waled

2018-04-01

Hall coefficient measurements offer great opportunities as well as major challenges for nondestructive materials characterization. The Hall effect is produced by the magnetic Lorentz force acting on moving charge carriers in the presence of an applied magnetic field. The magnetic perturbation gives rise to a Hall current that is normal to the conduction current but does not directly perturb the electric potential distribution. Therefore, Hall coefficient measurements usually exploit the so-called transverse galvanomagnetic potential drop effect that arises when the Hall current is intercepted by the boundaries of the specimen and thereby produce a measurable potential drop. In contrast, no Hall potential is produced in a large plate in the presence of a uniform normal field at quasi-static low frequencies. In other words, conventional Hall coefficient measurements are inherently destructive since they require cutting the material under tests. This study investigated the feasibility of using alternating current potential drop (ACPD) techniques for nondestructive Hall coefficient measurements in plates. Specifically, the directional four-point square-electrode configuration is investigated with superimposed external magnetic field. Two methods are suggested to make Hall coefficient measurements in large plates without destructive machining. At low frequencies, constraining the bias magnetic field can replace constraining the dimensions of the specimen, which is inherently destructive. For example, when a cylindrical permanent magnet is used to provide the bias magnetic field, the peak Hall voltage is produced when the diameter of the magnet is equal to the diagonal of the square ACPD probe. Although this method is less effective than cutting the specimen to a finite size, the loss of sensitivity is less than one order of magnitude even at very low frequencies. In contrast, at sufficiently high inspection frequencies the magnetic field of the Hall current induces a

Zastosowanie oznaczeń nikotyny we włosach jako narzędzia do oceny narażenia na dym tytoniowy

PubMed Central

Koszowski, Bartosz; Czogała, Jan; Goniewicz, Maciej Łukasz; Sobczak, Andrzej; Kolasińska, Ewelina; Kośmider, Leon; Kuma, Tomasz

2009-01-01

Pierwsza praca dotycząca oznaczania nikotyny we włosach została opublikowana w 1983 roku przez Ishiyama i wsp. Od czasu tych pionierskich badań minęło już ponad 25 lat, a badanie zawartości nikotyny we włosach stało się cennym narzędziem służącym ocenie narażenia na liczne ksenobiotyki, w tym na dym tytoniowy. Niniejszy artykuł jest próbą zwięzłego przeglądu najważniejszych badań ostatnich lat, które wykorzystywały nikotynę we włosach jako biomarker. W artykule opisano także stosowane do oznaczeń nikotyny we włosach techniki laboratoryjne oraz przedstawiono wady i zalety włosów jako biomarkera narażenia na dym tytoniowy. PMID:19189581

Hall effect of copper nitride thin films

NASA Astrophysics Data System (ADS)

Yue, G. H.; Liu, J. Z.; Li, M.; Yuan, X. M.; Yan, P. X.; Liu, J. L.

2005-08-01

The Hall effect of copper nitride (Cu3N) thin films was investigated in our work. Cu3N films were deposited on glass substrates by radio-frequency (RF) magnetron sputtering at different temperatures using pure copper as the sputtering target. The Hall coefficients of the films are demonstrated to be dependent on the deposition gas flow rate and the measuring temperature. Both the Hall coefficient and resistance of the Cu3N films increase with the nitrogen gas flow rate at room temperature, while the Hall mobility and the carrier density of the films decrease. As the temperature changed from 100 K to 300 K, the Hall coefficient and the resistivity of the films decreased, while the carrier density increased and Hall mobility shows no great change. The energy band gap of the Cu3N films deduced from the curve of the common logarithm of the Hall coefficient against 1/T is 1.17-1.31 eV.

36 CFR 1201.40 - Which debts can NARA refer to the Treasury for collection by offsetting tax refunds?

Code of Federal Regulations, 2010 CFR

2010-07-01

... Refund Offset § 1201.40 Which debts can NARA refer to the Treasury for collection by offsetting tax... reduce a tax refund by the amount of a past-due, legally enforceable debt owed to a Federal agency. (b) For purposes of this section, a past-due, legally enforceable debt referrable to the Treasury for tax...

36 CFR 1260.42 - What are the procedures for agency personnel to review records at a NARA facility?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false What are the procedures for agency personnel to review records at a NARA facility? 1260.42 Section 1260.42 Parks, Forests, and Public... reviewers; (2) Provide space for agency reviewers in the facility in which the records are located to the...

Semiclassical theory of Hall viscosity

NASA Astrophysics Data System (ADS)

Biswas, Rudro

2014-03-01

Hall viscosity is an intriguing stress response in quantum Hall systems and is predicted to be observable via the conductivity in an inhomogeneous electric field. This has been studied extensively using a range of techniques, such as adiabatic transport, effective field theories, and Kubo formulae. All of these are, however, agnostic as to the distinction between strongly correlated quantum Hall states and non-interacting ones, where the effect arises due to the fundamental non-commuting nature of velocities and orbit positions in a magnetic field. In this talk I shall develop the semiclassical theory of quantized cyclotron orbits drifting in an applied inhomogeneous electric field and use it to provide a clear physical picture of how single particle properties in a magnetic field contribute to the Hall viscosity-dependence of the conductivity.

Faster Hall-Effect Current-Measuring Circuit

NASA Technical Reports Server (NTRS)

Sullender, Craig C.; Johnson, Daniel D.; Walker, Daniel D.

1993-01-01

Current-measuring circuit operates on Hall-effect-sensing and magnetic-field-nulling principles similar to those described in article, "Nulling Hall-Effect Current-Measuring Circuit" (LEW-15023), but simpler and responds faster. Designed without feedback loop, and analog pulse-width-modulated output indicates measured current. Circuit measures current at frequency higher than bandwidth of its Hall-effect sensor.

Jefferson Lab Experimental Hall C

NASA Astrophysics Data System (ADS)

Carlini, Roger D.

1996-10-01

Jefferson Lab's Hall C went into initial operation in November 1995. The hall has a short orbit spectrometer (SOS) for short-lived particles such as pions and kaons and a high-momentum spectrometer (HMS) usually used for electrons. The SOS can also be used for protons. The HMS can range to 7 GeV/c. Both the SOS and HMS have typical resolutions of (10-3). Experiments for this hall range from measuring the neutron electric form factor, to color transparency, to creating strange nuclei. This paper will present the optical capabilities of the spectrometers, the parameters of the detection systems, and the overall beam line characteristics of the hall as determined from the results from the recent physics experiments along with the upcoming experimental schedule. Additional information is available at URL http://www.cebaf.gov/hallc.html.

Observation of a superfluid Hall effect

PubMed Central

Jiménez-García, Karina; Williams, Ross A.; Beeler, Matthew C.; Perry, Abigail R.; Phillips, William D.; Spielman, Ian B.

2012-01-01

Measurement techniques based upon the Hall effect are invaluable tools in condensed-matter physics. When an electric current flows perpendicular to a magnetic field, a Hall voltage develops in the direction transverse to both the current and the field. In semiconductors, this behavior is routinely used to measure the density and charge of the current carriers (electrons in conduction bands or holes in valence bands)—internal properties of the system that are not accessible from measurements of the conventional resistance. For strongly interacting electron systems, whose behavior can be very different from the free electron gas, the Hall effect’s sensitivity to internal properties makes it a powerful tool; indeed, the quantum Hall effects are named after the tool by which they are most distinctly measured instead of the physics from which the phenomena originate. Here we report the first observation of a Hall effect in an ultracold gas of neutral atoms, revealed by measuring a Bose–Einstein condensate’s transport properties perpendicular to a synthetic magnetic field. Our observations in this vortex-free superfluid are in good agreement with hydrodynamic predictions, demonstrating that the system’s global irrotationality influences this superfluid Hall signal. PMID:22699494

36 CFR 1201.18 - What interest, penalty charges, and administrative costs will I have to pay on a debt owed to NARA?

Code of Federal Regulations, 2011 CFR

2011-07-01

... to 31 U.S.C. 3717 to the extent authorized under common law or other applicable statutory authority... collection of these charges would be against equity and good conscience or not in the best interest of NARA...

High Power Hall Thrusters

NASA Technical Reports Server (NTRS)

Jankovsky, Robert; Tverdokhlebov, Sergery; Manzella, David

1999-01-01

The development of Hall thrusters with powers ranging from tens of kilowatts to in excess of one hundred kilowatts is considered based on renewed interest in high power. high thrust electric propulsion applications. An approach to develop such thrusters based on previous experience is discussed. It is shown that the previous experimental data taken with thrusters of 10 kW input power and less can be used. Potential mass savings due to the design of high power Hall thrusters are discussed. Both xenon and alternate thruster propellant are considered, as are technological issues that will challenge the design of high power Hall thrusters. Finally, the implications of such a development effort with regard to ground testing and spacecraft intecrati'on issues are discussed.

36 CFR 1280.78 - Does NARA charge fees for the use of public areas in the National Archives Building?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false Does NARA charge fees for the use of public areas in the National Archives Building? 1280.78 Section 1280.78 Parks, Forests, and... inform organizations interested in using public spaces in the National Archives Building in advance and...

36 CFR 1280.78 - Does NARA charge fees for the use of public areas in the National Archives Building?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Does NARA charge fees for the use of public areas in the National Archives Building? 1280.78 Section 1280.78 Parks, Forests, and... inform organizations interested in using public spaces in the National Archives Building in advance and...

a Permanent Magnet Hall Thruster for Satellite Orbit Maneuvering with Low Power

NASA Astrophysics Data System (ADS)

Ferreira, Jose Leonardo

Plasma thrusters are known to have some advantages like high specific impulse. Electric propulsion is already recognized as a successful technology for long duration space missions. It has been used as primary propulsion system on earth-moon orbit trnsfer missions, comets and asteroids exploration and on commercially geosyncronous satellite attitude control systems. Closed Drift Plasma Thrusters, also called Hall Thrusters or SPT (Stationary Plasma Thruster) was conceived inthe USSR and, since then, they have been developed in several countries such as France, USA, Japan and Brazil. In this work, introductory remarks are made with focus on the most significant contributions of the electric propulsion to the progress of space missions and its future role on the brazillian space program. The main features of an inedit Permanent Magnet Hall Thruster (PMHT) developed at the Plasma Laboratory of the University of Brasilia is presented. The idea of using an array of permanent magnets, instead of an eletromagnet, to produce a radial magnetic field inside the cylindrical plasma drift channel of the thruster is a very important improvement, because it allows the possibility of developing a Hall Thruster with electric power consumption low enough to be used in small and medium size satellites. The new Halĺplasma source characterization is presented with plasma density, temperature and potential space profiles. Ion temperature mesurements based on Doppler broadening of spectral lines and ion energy measurements of the ejected plasma plume are also shown. Based on the mesured parameters of the accelerated plasma we constructed a merit figure for the PMHT. We also perform numerical simulations of satellite orbit raising from an altitude of 700 km to 36000 km using a PMHT operating in the 100 mN to 500 mN thrust range. In order to perform these caculations, integration techniques of spacecraft trajectory were used. The main simulation parameters were: orbit raising time

The Hall effect in star formation

NASA Astrophysics Data System (ADS)

Braiding, C. R.; Wardle, M.

2012-05-01

Magnetic fields play an important role in star formation by regulating the removal of angular momentum from collapsing molecular cloud cores. Hall diffusion is known to be important to the magnetic field behaviour at many of the intermediate densities and field strengths encountered during the gravitational collapse of molecular cloud cores into protostars, and yet its role in the star formation process is not well studied. We present a semianalytic self-similar model of the collapse of rotating isothermal molecular cloud cores with both Hall and ambipolar diffusion, and similarity solutions that demonstrate the profound influence of the Hall effect on the dynamics of collapse. The solutions show that the size and sign of the Hall parameter can change the size of the protostellar disc by up to an order of magnitude and the protostellar accretion rate by 50 per cent when the ratio of the Hall to ambipolar diffusivities is varied between -0.5 ≤ηH/ηA≤ 0.2. These changes depend upon the orientation of the magnetic field with respect to the axis of rotation and create a preferred handedness to the solutions that could be observed in protostellar cores using next-generation instruments such as ALMA. Hall diffusion also determines the strength and position of the shocks that bound the pseudo and rotationally supported discs, and can introduce subshocks that further slow accretion on to the protostar. In cores that are not initially rotating (not examined here), Hall diffusion can even induce rotation, which could give rise to disc formation and resolve the magnetic braking catastrophe. The Hall effect clearly influences the dynamics of gravitational collapse and its role in controlling the magnetic braking and radial diffusion of the field merits further exploration in numerical simulations of star formation.

36 CFR 1280.48 - How do I apply to film, photograph, or videotape on NARA property for news purposes?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false How do I apply to film... film, photograph, or videotape on NARA property for news purposes? (a) If you wish to film, photograph... wish to film, photograph, or videotape for news purposes at a Presidential library or at a regional...

Non-invasive Hall current distribution measurement in a Hall effect thruster

NASA Astrophysics Data System (ADS)

Mullins, Carl R.; Farnell, Casey C.; Farnell, Cody C.; Martinez, Rafael A.; Liu, David; Branam, Richard D.; Williams, John D.

2017-01-01

A means is presented to determine the Hall current density distribution in a closed drift thruster by remotely measuring the magnetic field and solving the inverse problem for the current density. The magnetic field was measured by employing an array of eight tunneling magnetoresistive (TMR) sensors capable of milligauss sensitivity when placed in a high background field. The array was positioned just outside the thruster channel on a 1.5 kW Hall thruster equipped with a center-mounted hollow cathode. In the sensor array location, the static magnetic field is approximately 30 G, which is within the linear operating range of the TMR sensors. Furthermore, the induced field at this distance is approximately tens of milligauss, which is within the sensitivity range of the TMR sensors. Because of the nature of the inverse problem, the induced-field measurements do not provide the Hall current density by a simple inversion; however, a Tikhonov regularization of the induced field does provide the current density distributions. These distributions are shown as a function of time in contour plots. The measured ratios between the average Hall current and the average discharge current ranged from 6.1 to 7.3 over a range of operating conditions from 1.3 kW to 2.2 kW. The temporal inverse solution at 1.5 kW exhibited a breathing mode frequency of 24 kHz, which was in agreement with temporal measurements of the discharge current.

Non-invasive Hall current distribution measurement in a Hall effect thruster.

PubMed

Mullins, Carl R; Farnell, Casey C; Farnell, Cody C; Martinez, Rafael A; Liu, David; Branam, Richard D; Williams, John D

2017-01-01

A means is presented to determine the Hall current density distribution in a closed drift thruster by remotely measuring the magnetic field and solving the inverse problem for the current density. The magnetic field was measured by employing an array of eight tunneling magnetoresistive (TMR) sensors capable of milligauss sensitivity when placed in a high background field. The array was positioned just outside the thruster channel on a 1.5 kW Hall thruster equipped with a center-mounted hollow cathode. In the sensor array location, the static magnetic field is approximately 30 G, which is within the linear operating range of the TMR sensors. Furthermore, the induced field at this distance is approximately tens of milligauss, which is within the sensitivity range of the TMR sensors. Because of the nature of the inverse problem, the induced-field measurements do not provide the Hall current density by a simple inversion; however, a Tikhonov regularization of the induced field does provide the current density distributions. These distributions are shown as a function of time in contour plots. The measured ratios between the average Hall current and the average discharge current ranged from 6.1 to 7.3 over a range of operating conditions from 1.3 kW to 2.2 kW. The temporal inverse solution at 1.5 kW exhibited a breathing mode frequency of 24 kHz, which was in agreement with temporal measurements of the discharge current.

Star Formation and the Hall Effect

NASA Astrophysics Data System (ADS)

Braiding, Catherine

2011-10-01

Magnetic fields play an important role in star formation by regulating the removal of angular momentum from collapsing molecular cloud cores. Hall diffusion is known to be important to the magnetic field behaviour at many of the intermediate densities and field strengths encountered during the gravitational collapse of molecular cloud cores into protostars, and yet its role in the star formation process is not well-studied. This thesis describes a semianalytic self-similar model of the collapse of rotating isothermal molecular cloud cores with both Hall and ambipolar diffusion, presenting similarity solutions that demonstrate that the Hall effect has a profound influence on the dynamics of collapse. ... Hall diffusion also determines the strength of the magnetic diffusion and centrifugal shocks that bound the pseudo and rotationally-supported discs, and can introduce subshocks that further slow accretion onto the protostar. In cores that are not initially rotating Hall diffusion can even induce rotation, which could give rise to disc formation and resolve the magnetic braking catastrophe. The Hall effect clearly influences the dynamics of gravitational collapse and its role in controlling the magnetic braking and radial diffusion of the field would be worth exploring in future numerical simulations of star formation.

Reduced Spin Hall Effects from Magnetic Proximity.

DOE PAGES

Zhang, Wei; Jungfleisch, Matthias B.; Jiang, Wanjun; ...

2015-03-26

We investigate temperature-dependent spin pumping and inverse spin Hall effects in thin Pt and Pd in contact with Permalloy. Our experiments show a decrease of the spin Hall effect with decreasing temperature, which is attributed to a temperature-dependent proximity effect. The spin Hall angle decreases from 0.086 at room temperature to 0.042 at 10 K for Pt and is nearly negligible at 10 K for Pd. By first-principle calculations, we show that the spin Hall conductivity indeed reduces by increasing the proximity-induced spin magnetic moments for both Pt and Pd. This work highlights the important role of proximity-induced magnetic orderingmore » to spin Hall phenomena in Pt and Pd.« less

Residence Hall Seating That Works.

ERIC Educational Resources Information Center

Wiens, Janet

2003-01-01

Describes the seating chosen for residence halls at the Massachusetts Institute of Technology and the University of New England. The seating required depends on ergonomics, aesthetics, durability, cost, and code requirements. In addition, residence halls must have a range of seating types to accommodate various uses. (SLD)

75 FR 22770 - Gary E. Hall and Rita Hall; Notice of Availability of Environmental Assessment

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-30

... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 13652-000-Montana] Gary E. Hall and Rita Hall; Notice of Availability of Environmental Assessment April 22, 2010. In accordance with the National Environmental Policy Act of 1969, as amended, and the Federal Energy Regulatory...

Charge carrier coherence and Hall effect in organic semiconductors

DOE PAGES

Yi, H. T.; Gartstein, Y. N.; Podzorov, V.

2016-03-30

Hall effect measurements are important for elucidating the fundamental charge transport mechanisms and intrinsic mobility in organic semiconductors. However, Hall effect studies frequently reveal an unconventional behavior that cannot be readily explained with the simple band-semiconductor Hall effect model. Here, we develop an analytical model of Hall effect in organic field-effect transistors in a regime of coexisting band and hopping carriers. The model, which is supported by the experiments, is based on a partial Hall voltage compensation effect, occurring because hopping carriers respond to the transverse Hall electric field and drift in the direction opposite to the Lorentz force actingmore » on band carriers. We show that this can lead in particular to an underdeveloped Hall effect observed in organic semiconductors with substantial off-diagonal thermal disorder. Lastly, our model captures the main features of Hall effect in a variety of organic semiconductors and provides an analytical description of Hall mobility, carrier density and carrier coherence factor.« less

Charge carrier coherence and Hall effect in organic semiconductors.

PubMed

Yi, H T; Gartstein, Y N; Podzorov, V

2016-03-30

Hall effect measurements are important for elucidating the fundamental charge transport mechanisms and intrinsic mobility in organic semiconductors. However, Hall effect studies frequently reveal an unconventional behavior that cannot be readily explained with the simple band-semiconductor Hall effect model. Here, we develop an analytical model of Hall effect in organic field-effect transistors in a regime of coexisting band and hopping carriers. The model, which is supported by the experiments, is based on a partial Hall voltage compensation effect, occurring because hopping carriers respond to the transverse Hall electric field and drift in the direction opposite to the Lorentz force acting on band carriers. We show that this can lead in particular to an underdeveloped Hall effect observed in organic semiconductors with substantial off-diagonal thermal disorder. Our model captures the main features of Hall effect in a variety of organic semiconductors and provides an analytical description of Hall mobility, carrier density and carrier coherence factor.

Charge carrier coherence and Hall effect in organic semiconductors

PubMed Central

Yi, H. T.; Gartstein, Y. N.; Podzorov, V.

2016-01-01

Hall effect measurements are important for elucidating the fundamental charge transport mechanisms and intrinsic mobility in organic semiconductors. However, Hall effect studies frequently reveal an unconventional behavior that cannot be readily explained with the simple band-semiconductor Hall effect model. Here, we develop an analytical model of Hall effect in organic field-effect transistors in a regime of coexisting band and hopping carriers. The model, which is supported by the experiments, is based on a partial Hall voltage compensation effect, occurring because hopping carriers respond to the transverse Hall electric field and drift in the direction opposite to the Lorentz force acting on band carriers. We show that this can lead in particular to an underdeveloped Hall effect observed in organic semiconductors with substantial off-diagonal thermal disorder. Our model captures the main features of Hall effect in a variety of organic semiconductors and provides an analytical description of Hall mobility, carrier density and carrier coherence factor. PMID:27025354

Laurance David Hall.

PubMed

Coxon, Bruce

2011-01-01

An account is given of the life, scientific contributions, and passing of Laurance David Hall (1938-2009), including his early history and education at the University of Bristol, UK, and the synthesis and NMR spectroscopy of carbohydrates and other natural products during ∼20 years of research and teaching at the University of British Columbia in Vancouver, Canada. Lists of graduate students, post-doctoral fellows, and sabbatical visitors are provided for this period. Following a generous endowment by Dr. Herchel Smith, Professor Hall built a new Department of Medicinal Chemistry at Cambridge University, UK, and greatly expanded his researches into the technology and applications of magnetic resonance imaging (MRI) and zero quantum NMR. MRI technology was applied both to medical problems such as the characterization of cartilage degeneration in knee joints, the measurement of ventricular function, lipid localization in animal models of atherosclerosis, paramagnetic metal complexes of polysaccharides as contrast agents, and studies of many other anatomical features, but also to several aspects of materials analysis, including food analyses, process control, and the elucidation of such physical phenomena as the flow of liquids through porous media, defects in concrete, and the visualization of fungal damage to wood. Professor Hall's many publications, patents, lectures, and honors and awards are described, and also his successful effort to keep the Asilomar facility in Pacific Grove, California as the alternating venue for the annual Experimental NMR Conference. Two memorial services for Professor Hall are remembered. Copyright © 2011 Elsevier Inc. All rights reserved.

Turbulence Measurements in a Tropical Zoo Hall

NASA Astrophysics Data System (ADS)

Eugster, Werner; Denzler, Basil; Bogdal, Christian

2017-04-01

The Masoala rainforest hall of the Zurich Zoo, Switzerland, covers a ground surface area of 10,856 m2 and reaches 30 m in height. With its transparent ETFE foiled roof it provides a tropical climate for a large diversity of plants and animals. In combination with an effort to estimate dry deposition of elemental mercury, we made an attempt to measure turbulent transfer velocity with an ultrasonic anemometer inside the hall. Not surprising, the largest turbulence elements were on the order of the hall dimension. Although the dimensions of the hall seem to be small (200,000 m3) for eddy covariance flux measurements and the air circulation inside the hall was extremely weak, the spectra of wind velocity components and virtual (sonic) temperature obeyed the general statistical description expected under unconstrained outdoor measurement conditions. We will present results from a two-week measurement campaign in the Masoala rainforest hall and make a suggestion for the deposition velocity to be used to estimate dry deposition of atmospheric components to the tropical vegetation surface.

The Other Hall Effect: College Board Physics

ERIC Educational Resources Information Center

Sheppard, Keith; Gunning, Amanda M.

2013-01-01

Edwin Herbert Hall (1855-1938), discoverer of the Hall effect, was one of the first winners of the AAPT Oersted Medal for his contributions to the teaching of physics. While Hall's role in establishing laboratory work in high schools is widely acknowledged, his position as chair of the physics section of the Committee on College Entrance…

Chapin Hall Center for Children.

ERIC Educational Resources Information Center

Chicago Univ., IL. Chapin Hall Center for Children.

This document consists of two separate publications: (1) "The Power of Knowing", a brief 12-page description of the Chapin Hall Center for Children, and (2) "Projects and Publications", a 67-page list of the center's projects and publications as of Autumn 1997. "The Power of Knowing" describes the Chapin Hall Center…

Hall Thruster Technology for NASA Science Missions

NASA Technical Reports Server (NTRS)

Manzella, David; Oh, David; Aadland, Randall

2005-01-01

The performance of a prototype Hall thruster designed for Discovery-class NASA science mission applications was evaluated at input powers ranging from 0.2 to 2.9 kilowatts. These data were used to construct a throttle profile for a projected Hall thruster system based on this prototype thruster. The suitability of such a Hall thruster system to perform robotic exploration missions was evaluated through the analysis of a near Earth asteroid sample return mission. This analysis demonstrated that a propulsion system based on the prototype Hall thruster offers mission benefits compared to a propulsion system based on an existing ion thruster.

Numerical analysis of Hall effect on the performance of magnetohydrodynamic heat shield system based on nonequilibrium Hall parameter model

NASA Astrophysics Data System (ADS)

Li, Kai; Liu, Jun; Liu, Weiqiang

2017-01-01

Magnetohydrodynamic (MHD) heat shield system, a novel thermal protection technique in the hypersonic field, has been paid much attention in recent years. In the real flight condition, not only the Lorentz force but also the Hall electric field is induced by the interaction between ionized air post shock and magnetic field. In order to analyze the action mechanisms of the Hall effect, numerical methods of coupling thermochemical nonequilibrium flow field with externally applied magnetic field as well as the induced electric field are constructed and validated. Based on the nonequilibrium model of Hall parameter, numerical simulations of the MHD heat shield system is conducted under two different magnetic induction strengths (B0=0.2 T, 0.5 T) on a reentry capsule forebody. Results show that, the Hall effect is the same under the two magnetic induction strengths when the wall is assumed to be conductive. For this case, with the Hall effect taken into account, the Lorentz force counter stream diminishes a lot and the circumferential component dominates, resulting that the heat flux and shock-off distance approach the case without MHD control. However, for the insulating wall, the Hall effect acts in different ways under these two magnetic induction strengths. For this case, with the Hall effect taken into account, the performance of MHD heat shield system approaches the case neglecting the Hall effect when B0 equals 0.2 T. Such performance becomes worse when B0 equals 0.5 T and the aerothermal environment on the capsule shoulder is even worse than the case without MHD control.

Hall mobility in multicrystalline silicon

NASA Astrophysics Data System (ADS)

Schindler, F.; Geilker, J.; Kwapil, W.; Warta, W.; Schubert, M. C.

2011-08-01

Knowledge of the carrier mobility in silicon is of utmost importance for photovoltaic applications, as it directly influences the diffusion length and thereby the cell efficiency. Moreover, its value is needed for a correct quantitative evaluation of a variety of lifetime measurements. However, models that describe the carrier mobility in silicon are based on theoretical calculations or fits to experimental data in monocrystalline silicon. Multicrystalline (mc) silicon features crystal defects such as dislocations and grain boundaries, with the latter possibly leading to potential barriers through the trapping of charge carriers and thereby influencing the mobility, as shown, for example, by Maruska et al. [Appl. Phys. Lett. 36, 381 (1980)]. To quantify the mobilities in multicrystalline silicon, we performed Hall measurements in p-type mc-Si samples of various resistivities and different crystal structures and compared the data to majority carrier Hall mobilities in p-type monocrystalline floatzone (FZ) silicon. For lack of a model that provides reliable values of the Hall mobility in silicon, an empirical fit similar to existing models for conductivity mobilities is proposed based on Hall measurements of monocrystalline p-type FZ silicon. By comparing the measured Hall mobilities obtained from mc silicon with the corresponding Hall mobilities in monocrystalline silicon of the same resistivity, we found that the mobility reduction due to the presence of crystal defects in mc-Si ranges between 0% and 5% only. Mobility decreases of up to 30% as reported by Peter et al. [Proceedings of the 23rd European Photovoltaic Solar Energy Conference, Valencia, Spain, 1-5 September 2008], or even of a factor of 2 to 3 as detected by Palais et al. [Mater. Sci. Eng. B 102, 184 (2003)], in multicrystalline silicon were not observed.

Prospect of quantum anomalous Hall and quantum spin Hall effect in doped kagome lattice Mott insulators.

PubMed

Guterding, Daniel; Jeschke, Harald O; Valentí, Roser

2016-05-17

Electronic states with non-trivial topology host a number of novel phenomena with potential for revolutionizing information technology. The quantum anomalous Hall effect provides spin-polarized dissipation-free transport of electrons, while the quantum spin Hall effect in combination with superconductivity has been proposed as the basis for realizing decoherence-free quantum computing. We introduce a new strategy for realizing these effects, namely by hole and electron doping kagome lattice Mott insulators through, for instance, chemical substitution. As an example, we apply this new approach to the natural mineral herbertsmithite. We prove the feasibility of the proposed modifications by performing ab-initio density functional theory calculations and demonstrate the occurrence of the predicted effects using realistic models. Our results herald a new family of quantum anomalous Hall and quantum spin Hall insulators at affordable energy/temperature scales based on kagome lattices of transition metal ions.

A Gift for Reading Hall No. 1

ERIC Educational Resources Information Center

MacWilliams, Bryon

2009-01-01

In this article, the author describes Reading Hall No. 1 of the Russian State Library. He was placed in the first reading hall in the mid-1990s, when the Russian government still honored Soviet traditions of granting certain privileges to certain foreigners. In the first hall, the rules are different. He can request as many books as he wants. He…

Quantum hall ferromagnets

NASA Astrophysics Data System (ADS)

Kumar, Akshay

We study several quantum phases that are related to the quantum Hall effect. Our initial focus is on a pair of quantum Hall ferromagnets where the quantum Hall ordering occurs simultaneously with a spontaneous breaking of an internal symmetry associated with a semiconductor valley index. In our first example ---AlAs heterostructures--- we study domain wall structure, role of random-field disorder and dipole moment physics. Then in the second example ---Si(111)--- we show that symmetry breaking near several integer filling fractions involves a combination of selection by thermal fluctuations known as "order by disorder" and a selection by the energetics of Skyrme lattices induced by moving away from the commensurate fillings, a mechanism we term "order by doping". We also study ground state of such systems near filling factor one in the absence of valley Zeeman energy. We show that even though the lowest energy charged excitations are charge one skyrmions, the lowest energy skyrmion lattice has charge > 1 per unit cell. We then broaden our discussion to include lattice systems having multiple Chern number bands. We find analogs of quantum Hall ferromagnets in the menagerie of fractional Chern insulator phases. Unlike in the AlAs system, here the domain walls come naturally with gapped electronic excitations. We close with a result involving only topology: we show that ABC stacked multilayer graphene placed on boron nitride substrate has flat bands with non-zero local Berry curvature but zero Chern number. This allows access to an interaction dominated system with a non-trivial quantum distance metric but without the extra complication of a non-zero Chern number.

Overview of Hall D Complex

DOE Office of Scientific and Technical Information (OSTI.GOV)

Chudakov, Eugene A.

Hall D is a new experimental hall at Jefferson Lab, designed for experiments with a photon beam. The primary motivation for Hall D is the GlueX experiment [1,2], dedicated to meson spectroscopy. The Hall D complex consists of: An electron beam line used to extract the 5.5-pass electrons from the accelerator into the Tagger Hall. The designed beam energy is E e = 12 GeV;The Tagger Hall, where the electron beam passes through a thin radiator (~0.01% R.L.) and is deflected into the beam dump. The electrons that lost >30% of their energy in the radiator are detected with scintillatormore » hodoscopes providing a ~0.1% energy resolution for the tagged photons. Aligned diamond radiators allow to produce linearly polarized photons via the Coherent Bremsstrahlung. The beam dump is limited to 60 kW (5 µA at 12 GeV); The Collimator Cave contains a collimator for the photon beam and dipole magnets downstream in order to remove charged particles. The 3.4 mm diameter collimator, located about 75 m downstream of the radiator, selects the central cone of the photon beam increasing its average linear polarization, up to ~40%in the coherent peak at 9 GeV; Hall D contains several elements of the photon beam line, and themain spectrometer. A Pair Spectrometer consists of a thin converter, a dipole magnet, and a two-arm detector used to measure the energy spectrum of the photon beam. The main spectrometer is based on a 2-T superconducting solenoid, 4 m long and 1.85 m bore diameter. The liquid hydrogen target is located in the front part the solenoid. The charged tracks are detected with a set of drift chambers; photons are detected with two electromagnetic calorimeters. There are also scintillator hodoscopes for triggering and time-of-flight measurements. The spectrometer is nearly hermetic in an angular range of 1° < θ < 120 •. The momentum resolution is σ p /p ~ 1 ₋ ₋3% depending on the polar angle θ. The energy resolution of the electromagnetic calorimeters is about 7

Astronaut Hall of Fame

NASA Image and Video Library

2018-04-21

Former astronauts and space explorers, Thomas D. Jones, Ph.D., and Scott D. Altman, front row, center, left and right, respectively, were inducted into the U.S. Astronaut Hall of Fame Class of 2018 during a ceremony inside the Space Shuttle Atlantis attraction at NASA’s Kennedy Space Center Visitor Complex in Florida. They are standing with previous Hall of Famers, including, Curt Brown, back row, far left, chairman of the board, Astronaut Scholarship Foundation. Brown performed the induction ceremony. Also in the group is former astronaut and NASA administrator Charlie Bolden, in the center, behind Jones and Altman. In the back row, second from left is John Grunsfeld, who spoke on behalf of Altman during the ceremony. Directly behind Altman is Storey Musgrave, who spoke on behalf of Jones during the ceremony. Inductees into the Hall of Fame are selected by a committee of Hall of Fame astronauts, former NASA officials, flight directors, historians and journalists. The process is administered by the Astronaut Scholarship Foundation. To be eligible, an astronaut must have made his or her first flight at least 17 years before the induction. Candidates must be a U.S. citizen and a NASA-trained commander, pilot or mission specialist who has orbited the earth at least once. Including Altman and Jones, 97 astronauts have been inducted into the AHOF.

Dr. Hall and the work cure.

PubMed

Reed, Kathlyn L

2005-01-01

Herbert James Hall, MD (1870-1923), was a pioneer in the systematic and organized study of occupation as therapy for persons with nervous and mental disorders that he called the "work cure." He began his work in 1904 during the early years of the Arts and Crafts Movement in the United States. His primary interest was the disorder neurasthenia, a condition with many symptoms including chronic fatigue, stress, and inability to work or perform everyday tasks. The prevailing treatment of the day was absolute bed rest known as the "rest cure." Hall believed that neurasthenia was not caused by overwork but by faulty living habits that could be corrected through an ordered life schedule and selected occupations. He identified several principles of therapy that are still used today including graded activity and energy conservation. Dr. Adolph Meyer credits Hall for organizing the ideas on the therapeutic use of occupation (Meyer, 1922). Hall also provided the name American Occupational Therapy Association for the professional organization and served as the fourth president. For his many contributions to the profession Hall deserves to be recognized as a major contributor to the development and organization of occupational therapy.

Magnet/Hall-Effect Random-Access Memory

NASA Technical Reports Server (NTRS)

Wu, Jiin-Chuan; Stadler, Henry L.; Katti, Romney R.

1991-01-01

In proposed magnet/Hall-effect random-access memory (MHRAM), bits of data stored magnetically in Perm-alloy (or equivalent)-film memory elements and read out by using Hall-effect sensors to detect magnetization. Value of each bit represented by polarity of magnetization. Retains data for indefinite time or until data rewritten. Speed of Hall-effect sensors in MHRAM results in readout times of about 100 nanoseconds. Other characteristics include high immunity to ionizing radiation and storage densities of order 10(Sup6)bits/cm(Sup 2) or more.

2017 Astronaut Hall of Fame Induction Ceremony

NASA Image and Video Library

2017-05-19

In the Space Shuttle Atlantis facility at the Kennedy Space Center Visitor Complex in Florida, Astronaut Scholarship Foundation Chairman Dan Brandenstein, left, also a Hall of Fame astronaut, presents inductee Michael Foale with his hall of fame medal. Former NASA Administrator Charlie Bolden, right, a Hall of Fame member, presented Foale for induction. During this year's ceremonies, space shuttle astronaut Ellen Ochoa also was enshrined.

2017 Astronaut Hall of Fame Induction Ceremony

NASA Image and Video Library

2017-05-19

In the Space Shuttle Atlantis facility at the Kennedy Space Center Visitor Complex in Florida, Astronaut Scholarship Foundation Chairman Dan Brandenstein, left, also a Hall of Fame astronaut, presents inductee Ellen Ochoa with her hall of fame medal. Former Johnson Space Center Director Mike Coats, right, a Hall of Fame member, presented Ochoa for induction. During this year's ceremonies, space shuttle astronaut Michael Foale also was enshrined.

36 CFR 1202.92 - What NARA systems of records are exempt from release under the Law Enforcement Exemption of the...

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What NARA systems of records are exempt from release under the Law Enforcement Exemption of the Privacy Act? 1202.92 Section 1202.92 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES REGULATIONS IMPLEMENTING THE PRIVACY ACT OF 1974...

Remote Diagnostic Measurements of Hall Thruster Plumes

DTIC Science & Technology

2009-08-14

This paper describes measurements of Hall thruster plumes that characterize ion energy distributions and charge state fractions using remotely...charge state. Next, energy and charge state measurements are described from testing of a 200 W Hall thruster at AFIT. Measurements showed variation in...position. Finally, ExB probe charge state measurements are presented from a 6-kW laboratory Hall thruster operated at low discharge voltage levels at AFRL

Hall thruster with grooved walls

DOE Office of Scientific and Technical Information (OSTI.GOV)

Li Hong; Ning Zhongxi; Yu Daren

2013-02-28

Axial-oriented and azimuthal-distributed grooves are formed on channel walls of a Hall thruster after the engine undergoes a long-term operation. Existing studies have demonstrated the relation between the grooves and the near-wall physics, such as sheath and electron near-wall transport. The idea to optimize the thruster performance with such grooves was also proposed. Therefore, this paper is devoted to explore the effects of wall grooves on the discharge characteristics of a Hall thruster. With experimental measurements, the variations on electron conductivity, ionization distribution, and integrated performance are obtained. The involved physical mechanisms are then analyzed and discussed. The findings helpmore » to not only better understand the working principle of Hall thruster discharge but also establish a physical fundamental for the subsequent optimization with artificial grooves.« less

Spin Hall Effects in Metallic Antiferromagnets

DOE PAGES

Zhang, Wei; Jungfleisch, Matthias B.; Jiang, Wanjun; ...

2014-11-04

In this paper, we investigate four CuAu-I-type metallic antiferromagnets for their potential as spin current detectors using spin pumping and inverse spin Hall effect. Nontrivial spin Hall effects were observed for FeMn, PdMn, and IrMn while a much higher effect was obtained for PtMn. Using thickness-dependent measurements, we determined the spin diffusion lengths of these materials to be short, on the order of 1 nm. The estimated spin Hall angles of the four materials follow the relationship PtMn > IrMn > PdMn > FeMn, highlighting the correlation between the spin-orbit coupling of nonmagnetic species and the magnitude of the spinmore » Hall effect in their antiferromagnetic alloys. These experiments are compared with first-principles calculations. Finally, engineering the properties of the antiferromagnets as well as their interfaces can pave the way for manipulation of the spin dependent transport properties in antiferromagnet-based spintronics.« less

Valley-chiral quantum Hall state in graphene superlattice structure

NASA Astrophysics Data System (ADS)

Tian, H. Y.; Tao, W. W.; Wang, J.; Cui, Y. H.; Xu, N.; Huang, B. B.; Luo, G. X.; Hao, Y. H.

2016-05-01

We theoretically investigate the quantum Hall effect in a graphene superlattice (GS) system, in which the two valleys of graphene are coupled together. In the presence of a perpendicular magnetic field, an ordinary quantum Hall effect is found with the sequence σxy=ν e^2/h(ν=0,+/-1,+/-2,\\cdots) . At the zeroth Hall platform, a valley-chiral Hall state stemming from the single K or K' valley is found and it is localized only on one sample boundary contributing to the longitudinal conductance but not to the Hall conductivity. Our findings may shed light on the graphene-based valleytronics applications.

Nonlinearity in the effect of an inhomogeneous Hall angle

NASA Astrophysics Data System (ADS)

Koon, Daniel W.

2007-03-01

The differential equation for the electric potential in a conducting material with an inhomogeneous Hall angle is extended to the large-field limit. This equation is solved for a square specimen, using a successive over-relaxation [SOR] technique for matrices of up to 101x101 size, and the Hall weighting function -- the effect of local pointlike perturbations on the measured Hall angle -- is calculated as both the unperturbed Hall angle, θH, and the perturbation, δθH, exceed the linear, small angle limit. Preliminary results show that the Hall angle varies by no more than 5% if both | θH |<1 and | δθH |<1. Thus, previously calculated results for the Hall weighting function can be used for most materials in all but the most extreme magnetic fields.

Giant Hall Photoconductivity in Narrow-Gapped Dirac Materials

NASA Astrophysics Data System (ADS)

Song, Justin C. W.; Kats, Mikhail A.

2016-12-01

Carrier dynamics acquire a new character in the presence of Bloch-band Berry curvature, which naturally arises in gapped Dirac materials (GDMs). Here we argue that photoresponse in GDMs with small band gaps is dramatically enhanced by Berry curvature. This manifests in a giant and saturable Hall photoconductivity when illuminated by circularly polarized light. Unlike Hall motion arising from a Lorentz force in a magnetic field, which impedes longitudinal carrier motion, Hall photoconductivity arising from Berry curvature can boost longitudinal carrier transport. In GDMs, this results in a helicity-dependent photoresponse in the Hall regime, where photoconductivity is dominated by its Hall component. We find that the induced Hall conductivity per incident irradiance is enhanced by up to six orders of magnitude when moving from the visible regime (with corresponding band gaps) to the far infrared. These results suggest that narrow-gap GDMs are an ideal test-bed for the unique physics that arise in the presence of Berry curvature, and open a new avenue for infrared and terahertz optoelectronics.

Air temperature gradient in large industrial hall

NASA Astrophysics Data System (ADS)

Karpuk, Michał; Pełech, Aleksander; Przydróżny, Edward; Walaszczyk, Juliusz; Szczęśniak, Sylwia

2017-11-01

In the rooms with dominant sensible heat load, volume airflow depends on many factors incl. pre-established temperature difference between exhaust and supply airflow. As the temperature difference is getting higher, airflow volume drops down, consequently, the cost of AHU is reduced. In high industrial halls with air exhaust grids located under the ceiling additional temperature gradient above working zone should be taken into consideration. In this regard, experimental research of the vertical air temperature gradient in high industrial halls were carried out for the case of mixing ventilation system The paper presents the results of air temperature distribution measurements in high technological hall (mechanically ventilated) under significant sensible heat load conditions. The supply airflow was delivered to the hall with the help of the swirl diffusers while exhaust grids were located under the hall ceiling. Basing on the air temperature distribution measurements performed on the seven pre-established levels, air temperature gradient in the area between 2.0 and 7.0 m above the floor was calculated and analysed.

36 CFR 1280.89 - How will NARA handle my request to use public areas in the National Archives at College Park?

Code of Federal Regulations, 2010 CFR

2010-07-01

... request to use public areas in the National Archives at College Park? 1280.89 Section 1280.89 Parks... College Park, Md § 1280.89 How will NARA handle my request to use public areas in the National Archives at College Park? (a) When you ask to use public areas at the National Archives at College Park, we will...

Preliminary Study of Arcjet Neutralization of Hall Thruster Clusters (Postprint)

DTIC Science & Technology

2007-01-18

Clustered Hall thrusters have emerged as a favored choice for extending Hall thruster options to very high powers (50 kW - 150 kW). This paper...examines the possible use of an arcjet to neutralize clustered Hall thrusters, as the hybrid arcjet- Hall thruster concept can fill a performance niche...and helium, and then demonstrate the first successful operation of a low power Hall thruster -arcjet neutralizer package. In the surrogate anode studies

Hall Thruster

NASA Image and Video Library

2017-03-06

NASA Glenn engineer Dr. Peter Peterson prepares a high-power Hall thruster for ground testing in a vacuum chamber that simulates the environment in space. This high-powered solar electric propulsion thruster has been identified as a critical part of NASA’s future deep space exploration plans.

The quantum Hall effects: Philosophical approach

NASA Astrophysics Data System (ADS)

Lederer, P.

2015-05-01

The Quantum Hall Effects offer a rich variety of theoretical and experimental advances. They provide interesting insights on such topics as gauge invariance, strong interactions in Condensed Matter physics, emergence of new paradigms. This paper focuses on some related philosophical questions. Various brands of positivism or agnosticism are confronted with the physics of the Quantum Hall Effects. Hacking's views on Scientific Realism, Chalmers' on Non-Figurative Realism are discussed. It is argued that the difficulties with those versions of realism may be resolved within a dialectical materialist approach. The latter is argued to provide a rational approach to the phenomena, theory and ontology of the Quantum Hall Effects.

Hall devices improve electric motor efficiency

NASA Technical Reports Server (NTRS)

Haeussermann, W.

1979-01-01

Efficiency of electric motors and generators is reduced by radial magnetic forces created by symmetric fields within device. Forces are sensed and counteracted by Hall devices on excitation or control windings. Hall generators directly measure and provide compensating control of anu asymmetry, eliminating additional measurements needed for calibration feedback control loop.

Coping Behaviors of Residence Hall Directors

ERIC Educational Resources Information Center

Wilkes, Ben

2017-01-01

This mixed-methods study examined tertiary-level residence-hall directors' reported coping behaviors for three systems of stress: environmental, personal, and work. It surveyed a convenience sample of 128 respondents using the Brief COPE scale (Carver, 1997). Reported length of service, genders, and hall populations were matched with 28 types of…

Thermally driven anomalous Hall effect transitions in FeRh

NASA Astrophysics Data System (ADS)

Popescu, Adrian; Rodriguez-Lopez, Pablo; Haney, Paul M.; Woods, Lilia M.

2018-04-01

Materials exhibiting controllable magnetic phase transitions are currently in demand for many spintronics applications. Here, we investigate from first principles the electronic structure and intrinsic anomalous Hall, spin Hall, and anomalous Nernst response properties of the FeRh metallic alloy which undergoes a thermally driven antiferromagnetic-to-ferromagnetic phase transition. We show that the energy band structures and underlying Berry curvatures have important signatures in the various Hall effects. Specifically, the suppression of the anomalous Hall and Nernst effects in the antiferromagnetic state and a sign change in the spin Hall conductivity across the transition are found. It is suggested that the FeRh can be used as a spin current detector capable of differentiating the spin Hall effect from other anomalous transverse effects. The implications of this material and its thermally driven phases as a spin current detection scheme are also discussed.

Comparisons and Evaluation of Hall Thruster Models

DTIC Science & Technology

2002-03-20

COVERED (FROM - TO) 20-04-2001 to 20-04-2002 4. TITLE AND SUBTITLE comparisons and Evaluation of Hall Thruster Models Unclassified 5a. CONTRACT NUMBER...TITLE AND SUBTITLE Comparisons and Evaluation of Hall Thruster Models 5c. PROGRAM ELEMENT NUMBER 5d. PROJECT NUMBER 5d. TASK NUMBER 6. AUTHOR(S...evaluation of Hall thruster models G. J. M. Hagelaar, J. Bareilles, L. Garrigues, and J.-P. Boeuf CPAT, Bâtiment 3R2, Université Paul Sabatier 118 Route

36 CFR 1280.85 - What space in the National Archives at College Park is available for use by non-NARA groups and...

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false What space in the National... Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF... Archives at College Park, Md § 1280.85 What space in the National Archives at College Park is available for...

36 CFR 1280.85 - What space in the National Archives at College Park is available for use by non-NARA groups and...

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false What space in the National... Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION NARA FACILITIES USE OF... Archives at College Park, Md § 1280.85 What space in the National Archives at College Park is available for...

Extrinsic spin Hall effect in graphene

NASA Astrophysics Data System (ADS)

Rappoport, Tatiana

The intrinsic spin-orbit coupling in graphene is extremely weak, making it a promising spin conductor for spintronic devices. In addition, many applications also require the generation of spin currents in graphene. Theoretical predictions and recent experimental results suggest one can engineer the spin Hall effect in graphene by greatly enhancing the spin-orbit coupling in the vicinity of an impurity. The extrinsic spin Hall effect then results from the spin-dependent skew scattering of electrons by impurities in the presence of spin-orbit interaction. This effect can be used to efficiently convert charge currents into spin-polarized currents. I will discuss recent experimental results on spin Hall effect in graphene decorated with adatoms and metallic cluster and show that a large spin Hall effect can appear due to skew scattering. While this spin-orbit coupling is small if compared with what it is found in metals, the effect is strongly enhanced in the presence of resonant scattering, giving rise to robust spin Hall angles. I will present our single impurity scattering calculations done with exact partial-wave expansions and complement the analysis with numerical results from a novel real-space implementation of the Kubo formalism for tight-binding Hamiltonians. The author acknowledges the Brazilian agencies CNPq, CAPES, FAPERJ and INCT de Nanoestruturas de Carbono for financial support.

The shear-Hall instability in newborn neutron stars

NASA Astrophysics Data System (ADS)

Kondić, T.; Rüdiger, G.; Hollerbach, R.

2011-11-01

Aims: In the first few minutes of a newborn neutron star's life the Hall effect and differential rotation may both be important. We demonstrate that these two ingredients are sufficient for generating a "shear-Hall instability" and for studying its excitation conditions, growth rates, and characteristic magnetic field patterns. Methods: We numerically solve the induction equation in a spherical shell, with a kinematically prescribed differential rotation profile Ω(s), where s is the cylindrical radius. The Hall term is linearized about an imposed uniform axial field. The linear stability of individual azimuthal modes, both axisymmetric and non-axisymmetric, is then investigated. Results: For the shear-Hall instability to occur, the axial field must be parallel to the rotation axis if Ω(s) decreases outward, whereas if Ω(s) increases outward it must be anti-parallel. The instability draws its energy from the differential rotation, and occurs on the short rotational timescale rather than on the much longer Hall timescale. It operates most efficiently if the Hall time is comparable to the diffusion time. Depending on the precise field strengths B0, either axisymmetric or non-axisymmetric modes may be the most unstable. Conclusions: Even if the differential rotation in newborn neutron stars is quenched within minutes, the shear-Hall instability may nevertheless amplify any seed magnetic fields by many orders of magnitude.

Piezo-Hall effect and fundamental piezo-Hall coefficients of single crystal n-type 3C-SiC(100) with low carrier concentration

NASA Astrophysics Data System (ADS)

Qamar, Afzaal; Dao, Dzung Viet; Dinh, Toan; Iacopi, Alan; Walker, Glenn; Phan, Hoang-Phuong; Hold, Leonie; Dimitrijev, Sima

2017-04-01

This article reports the results on the piezo-Hall effect in single crystal n-type 3C-SiC(100) having a low carrier concentration. The effect of the crystallographic orientation on the piezo-Hall effect has been investigated by applying stress to the Hall devices fabricated in different crystallographic directions. Single crystal n-type 3C-SiC(100) and 3C-SiC(111) were grown by low pressure chemical vapor deposition at 1250 °C. Fundamental piezo-Hall coefficients were obtained using the piezo-Hall effect measurements as P11 = (-29 ± 1.3) × 10-11 Pa-1, P12 = (11.06 ± 0.5)× 10-11 Pa-1, and P44 = (-3.4 ± 0.7) × 10-11 Pa-1. It has been observed that the piezo-Hall coefficients of n-type 3C-SiC(100) show a completely different behavior as compared to that of p-type 3C-SiC.

Batch-fabricated high-performance graphene Hall elements

PubMed Central

Xu, Huilong; Zhang, Zhiyong; Shi, Runbo; Liu, Honggang; Wang, Zhenxing; Wang, Sheng; Peng, Lian-Mao

2013-01-01

Hall elements are by far the most widely used magnetic sensor. In general, the higher the mobility and the thinner the active region of the semiconductor used, the better the Hall device. While most common magnetic field sensors are Si-based Hall sensors, devices made from III-V compounds tend to favor over that based on Si. However these devices are more expensive and difficult to manufacture than Si, and hard to be integrated with signal-processing circuits for extending function and enforcing performance. In this article we show that graphene is intrinsically an ideal material for Hall elements which may harness the remarkable properties of graphene, i.e. extremely high carrier mobility and atomically thin active body, to create ideal magnetic sensors with high sensitivity, excellent linearity and remarkable thermal stability. PMID:23383375

Safety halls--an evaluation.

PubMed

Nyberg, Anders; Gregersen, Nils Petter; Nolén, Sixten; Engström, Inger

2005-01-01

In most countries, drivers licensing systems usually include teaching some aspects of using safety equipment (e.g., airbags and seat belts). However, there is now evidence worldwide that such education is inadequate, as indicated by, for example, the overrepresentation of young drivers who do not use seat belts. A randomized controlled study was conducted in Sweden to evaluate the effects of visiting a facility known as a "safety hall" in combination with the mandatory skid training. The results were assessed to determine the effects of the knowledge and attitudes of learner drivers in the following subjects: airbags, securing loads, seat belts, sitting posture, speed, and tires. An experimental group and a control group comprising 658 and 668 learners, respectively, answered identical questionnaires on three different occasions (pretest, posttest 1, and posttest 2). The results show that, for most of the topics considered, knowledge and attitudes in both groups were better at posttest 2 than at the pretest, and in general, the best knowledge and attitudes were found in the experimental group. The combined safety/skid training seems to have had the greatest effect on seat belts and loads. The findings also indicate that the safety halls can be further improved to achieve an even better effect. The use of safety halls has improved the knowledge and attitudes of learner drivers concerning several important areas related to traffic safety. Since knowledge and attitudes are important predictors of behavior, implementing safety halls can be expected to lead to improvements, especially regarding the use of safety belts and securing loads.

Hall viscosity and electromagnetic response of electrons in graphene

NASA Astrophysics Data System (ADS)

Sherafati, Mohammad; Principi, Alessandro; Vignale, Giovanni

The Hall viscosity is a dissipationless component of the viscosity tensor of an electron liquid with broken time- reversal symmetry, such as a two-dimensional electron gas (2DEG) in the quantum Hall state. Similar to the Hall conductivity, the Hall viscosity is an anomalous transport coefficient; however, while the former is connected with the current response, the latter stems from the stress response to a geometric deformation. For a Galilean-invariant system such as 2DEG, the current density is indeed the generator of the geometric deformation: therefore a connection between the Hall connectivity and viscosity is expected and by now well established. In the case of graphene, a non-Galilean-invariant system, the existence of such a connection is far from obvious, as the current operator is essentially different from the momentum operator. In this talk, I will first present our results of the geometric Hall viscosity of electrons in single-layer graphene. Then, from the expansion of the nonlocal Hall conductivity for small wave vectors, I demonstrate that, in spite of the lack of Galilean invariance, an effective mass can be defined such that the relationship between the Hall conductivity and the viscosity retains the form it has in Galilean-invariant systems, not only for a large number of occupied Landau levels, but also, with very high accuracy, for the undoped system.

Simmons Hall, Massachusetts.

ERIC Educational Resources Information Center

Amelar, Sarah

2003-01-01

Describes the design of Simmons Hall, an undergraduate dormitory at the Massachusetts Institute of Technology, including the educational context and design goals. Includes information on the architects, as well as floor plans and photographs. (EV)

Remnant Geometric Hall Response in a Quantum Quench.

PubMed

Wilson, Justin H; Song, Justin C W; Refael, Gil

2016-12-02

Out-of-equilibrium systems can host phenomena that transcend the usual restrictions of equilibrium systems. Here, we unveil how out-of-equilibrium states, prepared via a quantum quench in a two-band system, can exhibit a nonzero Hall-type current-a remnant Hall response-even when the instantaneous Hamiltonian is time reversal symmetric (in contrast to equilibrium Hall currents). Interestingly, the remnant Hall response arises from the coherent dynamics of the wave function that retain a remnant of its quantum geometry postquench, and can be traced to processes beyond linear response. Quenches in two-band Dirac systems are natural venues for realizing remnant Hall currents, which exist when either mirror or time-reversal symmetry are broken (before or after the quench). Its long time persistence, sensitivity to symmetry breaking, and decoherence-type relaxation processes allow it to be used as a sensitive diagnostic of the complex out-of-equilibrium dynamics readily controlled and probed in cold-atomic optical lattice experiments.

A Behavioral Weight Control Program for Residence Hall Students.

ERIC Educational Resources Information Center

Domke, Jane A.; And Others

1981-01-01

Compared a weight control treatment specifically tailored to the needs of residence hall students with a standardized behavioral procedure. Although posttreatment results indicated a very slight and nonsignificant advantage for the residence hall condition, this was not true at follow-up. Suggests the residence hall procedure may be overly…

Roles of nonlocal conductivity on spin Hall angle measurement

NASA Astrophysics Data System (ADS)

Chen, Kai; Zhang, Shufeng

2017-10-01

Spin Hall angle characterizes the rate of spin-charge current conversion and it has become one of the most important material parameters for spintronics physics and device application. A long-standing controversy is that the spin Hall angles for a given material measured by spin pumping and by spin Hall torque experiments are inconsistent and they could differ by as much as an order of magnitude. By using the linear response spin transport theory, we explicitly formulate the relation between the spin Hall angle and measured variables in different experiments. We find that the nonlocal conductivity inherited in the layered structure plays a key role to resolve conflicting values of the spin Hall angle. We provide a generalized scheme for extracting spin transport coefficients from experimental data.

Spin torque efficiency of Ta, W, and Pt in metallic bilayers evaluated by harmonic Hall and spin Hall magnetoresistance measurements

NASA Astrophysics Data System (ADS)

Lau, Yong-Chang; Hayashi, Masamitsu

2017-08-01

We investigate the efficiency of current-induced torque, i.e., the spin torque efficiency, in in-plane magnetized heavy metal/CoFeB/MgO heterostructures (heavy metals = Pt, W, and Ta) using the harmonic Hall technique and the spin Hall magnetoresistance. We find that the amplitude of the external magnetic field has a strong influence on the spin torque efficiency evaluation by the harmonic Hall measurements. This can be corrected by measuring the corresponding Hall resistance susceptibility. The sign and magnitude of the resulting Slonczewski-like spin torque efficiencies are in agreement with previous reports and the measurements utilizing the spin Hall magnetoresistance, except for the Pt underlayer films. The origin of the discrepancy for the Pt underlayer films is unclear. The field like torque efficiencies, upon subtracting the Oersted field contribution, are quite low or negligible. This is in significant contrast to what has been found for the field like torque in heterostructures with perpendicular magnetization. These results suggest that a more advanced model is required in order to describe accurately spin transport and momentum transfer at metallic interfaces.

Intrinsic superspin Hall current

NASA Astrophysics Data System (ADS)

Linder, Jacob; Amundsen, Morten; Risinggârd, Vetle

2017-09-01

We discover an intrinsic superspin Hall current: an injected charge supercurrent in a Josephson junction containing heavy normal metals and a ferromagnet generates a transverse spin supercurrent. There is no accompanying dissipation of energy, in contrast to the conventional spin Hall effect. The physical origin of the effect is an antisymmetric spin density induced among transverse modes ky near the interface of the superconductor arising due to the coexistence of p -wave and conventional s -wave superconducting correlations with a belonging phase mismatch. Our predictions can be tested in hybrid structures including thin heavy metal layers combined with strong ferromagnets and ordinary s -wave superconductors.

HEDSA Town Hall Meeting

NASA Astrophysics Data System (ADS)

Afeyan, Bedros

2017-10-01

HEDSA will hold its Town Hall meeting on Wednesday October 25 at 12:30pm in the Wisconsin Center. The new steering committee members and HEDSA leadership will be announced. A report will be given on 2017 HEDSA activities. Program Managers from Federal Funding Agencies such as OFES, NNSA, AFOSR and NSF will provide updates on the state of sponsored research in HED plasmas, and to engage the community in an open dialogue. The HEDSA Town Hall is a ``bring your own lunch'' meeting. Current members of HEDSA and all graduate students are strongly encouraged to attend. To join HEDSA please visit HEDSA.org

Topological Hall Effect in Skyrmions: A Nonequilibrium Coherent Transport Approach

NASA Astrophysics Data System (ADS)

Yin, Gen; Zang, Jiadong; Lake, Roger

2014-03-01

Skyrmion is a topological spin texture recently observed in many materials with broken inversion symmetry. In experiments, one effective method to detect the skyrmion crystal phase is the topological Hall measurement. At adiabatic approximation, previous theoretical studies show that the Hall signal is provided by an emergent magnetic field, which explains the topological Hall effect in the classical level. Motivated by the potential device application of skyrmions as digital bits, it is important to understand the topological Hall effect in the mesoscopic level, where the electron coherence should be considered. In this talk, we will discuss the quantum aspects of the topological Hall effect on a tight binding setup solved by nonequilibrium Green's function (NEGF). The charge distribution, Hall potential distribution, thermal broadening effect and the Hall resistivity are investigated in detail. The relation between the Hall resistance and the DM interaction is investigated. Driven by the spin transferred torque (SST), Skyrmion dynamics is previously studied within the adiabatic approximation. At the quantum transport level, this talk will also discuss the non-adiabatic effect in the skyrmion motion with the presence of the topological Hall effect. This material is based upon work supported by the National Science Foundation under Grant Nos. NSF 1128304 and NSF 1124733. It was also supported in part by FAME, one of six centers of STARnet, an SRC program sponsored by MARCO and DARPA.

Training Top 10 Hall of Fame

ERIC Educational Resources Information Center

Training, 2012

2012-01-01

Microsoft Corporation and SCC Soft Computer are the newest inductees into the Training Top 10 Hall of Fame, joining the ranks of the 11 companies named to the hall since its inception in 2008 (Wyeth Pharmaceuticals subsequently was acquired by Pfizer Inc. in 2009). These 11 companies held Top 10 spots in the Training Top 50, Top 100, and now Top…

5. ROOFTOPS, ISHERWOOD HALL (BUILDING NO. 104), GRIFFIN (BUILDING NO. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

5. ROOFTOPS, ISHERWOOD HALL (BUILDING NO. 104), GRIFFIN (BUILDING NO. 110), MELVILLE HALL (BUILDING NO. 116) LOOKING WEST FROM CLOCK TOWER OF MAHAN HALL - U.S. Naval Academy, Annapolis, Anne Arundel County, MD

Anomalous Hall effect in calcium-doped lanthanum cobaltite and gadolinium

NASA Astrophysics Data System (ADS)

Baily, Scott Alan

The physical origin of the anomalous (proportional to magnetization) Hall effect is not very well understood. While many theories account for a Hall effect proportional to the magnetization of a material, these theories often predict effects significantly smaller than those found in ferromagnetic materials. An even more significant deficiency of the conventional theories is that they predict an anomalous Hall resistivity that is proportional to a power of the resistivity, and in the absence of a metal insulator transition cannot account for the anomalous Hall effect that peaks near TC. Recent models based on a geometric, or Berry, phase have had a great deal of success describing the anomalous Hall effect in double-exchange systems (e.g., lanthanum manganite and chromium dioxide). In gadolinium, as in double-exchange magnets, the exchange interaction is mediated by the conduction electrons and the anomalous Hall effect may therefore resemble that of CrO2 and other metallic double-exchange ferromagnets. Lanthanum cobaltite is similar to manganite in many ways, but a strong double-exchange interaction is not present. Calcium-doped lanthanum cobaltite films were found to have the largest anomalous Hall effect of any ferromagnetic metal. The primary purpose of this study is to gain insight into the origin of the anomalous Hall effect with the hope that these theories can be extended to account for the effect in other materials. The Hall resistivity, magnetoresistance, and magnetization of a Gadolinium single crystal were measured in fields up to 30 T. Cobaltite films were grown via laser ablation and characterized by a variety of techniques. Hall resistivity, magnetoresistance, magnetization, and magnetothermopower of L 1-xCaxCoO3 samples with 0.15 < x < 0.4 were measured in fields up to 7 T. The Gd results suggest that Berry's phase contributes partially to the Hall effect near TC. Berry's phase theories hold promise for explaining the large anomalous Hall effect in

Performance of an 8 kW Hall Thruster

DTIC Science & Technology

2000-01-12

For the purpose of either orbit raising and/or repositioning the Hall thruster must be capable of delivering sufficient thrust to minimize transfer...time. This coupled with the increasing on-board electric power capacity of military and commercial satellites, requires a high power Hall thruster that...development of a novel, high power Hall thruster , capable of efficient operation over a broad range of Isp and thrust. We call such a thruster the bi

Spontaneous Hall effect in a chiral p-wave superconductor

NASA Astrophysics Data System (ADS)

Furusaki, Akira; Matsumoto, Masashige; Sigrist, Manfred

2001-08-01

In a chiral superconductor with broken time-reversal symmetry a ``spontaneous Hall effect'' may be observed. We analyze this phenomenon by taking into account the surface properties of a chiral superconductor. We identify two main contributions to the spontaneous Hall effect. One contribution originates from the Bernoulli (or Lorentz) force due to spontaneous currents running along the surfaces of the superconductor. The other contribution has a topological origin and is related to the intrinsic angular momentum of Cooper pairs. The latter can be described in terms of a Chern-Simons-like term in the low-energy field theory of the superconductor and has some similarities with the quantum Hall effect. The spontaneous Hall effect in a chiral superconductor is, however, nonuniversal. Our analysis is based on three approaches to the problem: a self-consistent solution of the Bogoliubov-de Gennes equation, a generalized Ginzburg-Landau theory, and a hydrodynamic formulation. All three methods consistently lead to the same conclusion that the spontaneous Hall resistance of a two-dimensional superconducting Hall bar is of order h/(ekFλ)2, where kF is the Fermi wave vector and λ is the London penetration depth; the Hall resistance is substantially suppressed from a quantum unit of resistance. Experimental issues in measuring this effect are briefly discussed.

Tutorial: Physics and modeling of Hall thrusters

NASA Astrophysics Data System (ADS)

Boeuf, Jean-Pierre

2017-01-01

Hall thrusters are very efficient and competitive electric propulsion devices for satellites and are currently in use in a number of telecommunications and government spacecraft. Their power spans from 100 W to 20 kW, with thrust between a few mN and 1 N and specific impulse values between 1000 and 3000 s. The basic idea of Hall thrusters consists in generating a large local electric field in a plasma by using a transverse magnetic field to reduce the electron conductivity. This electric field can extract positive ions from the plasma and accelerate them to high velocity without extracting grids, providing the thrust. These principles are simple in appearance but the physics of Hall thrusters is very intricate and non-linear because of the complex electron transport across the magnetic field and its coupling with the electric field and the neutral atom density. This paper describes the basic physics of Hall thrusters and gives a (non-exhaustive) summary of the research efforts that have been devoted to the modelling and understanding of these devices in the last 20 years. Although the predictive capabilities of the models are still not sufficient for a full computer aided design of Hall thrusters, significant progress has been made in the qualitative and quantitative understanding of these devices.

Measured Early Lateral Energy Fractions in Concert Halls and Opera Houses

NASA Astrophysics Data System (ADS)

BARRON, M.

2000-04-01

In the 30 years since early lateral reflections were first suggested as important for concert halls, spatial impression and source broadening have become almost universally accepted as essential characteristics of halls with good acoustics. Two objective measures of source broadening have been proposed. Measured values of the best defined of these measures, the early lateral energy fraction (LF), are considered here. Results from two independent measurement surveys are discussed. Comparisons of LF values by hall show a significant link between hall mean LF and hall width. There is however considerable overlap between measured LF values in different halls so the relevance of describing halls by their mean early lateral energy fraction values is questionable. The behaviour of LF values within auditoria is discussed for different concert hall plan forms and within opera houses. A measure of source broadening including sound level is proposed and results considered in the context of auditorium design.

Destruction of the Fractional Quantum Hall Effect by Disorder

DOE R&D Accomplishments Database

Laughlin, R. B.

1985-07-01

It is suggested that Hall steps in the fractional quantum Hall effect are physically similar to those in the ordinary quantum Hall effect. This proposition leads to a simple scaling diagram containing a new type of fixed point, which is identified with the destruction of the fractional states by disorder. 15 refs., 3 figs.

27. FIRST FLOOR CENTRAL HALL, EAST WALL, DETAIL OF ENTABLATURE ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

27. FIRST FLOOR CENTRAL HALL, EAST WALL, DETAIL OF ENTABLATURE SHOWING EGG AND DART OVOLO AND GUTTAE OF THE THIRD MUTULE FROM THE SOUTHEAST CORNER - Independence Hall Complex, Independence Hall, 500 Chestnut Street, Philadelphia, Philadelphia County, PA

Intrinsic quantum spin Hall and anomalous Hall effects in h-Sb/Bi epitaxial growth on a ferromagnetic MnO2 thin film.

PubMed

Zhou, Jian; Sun, Qiang; Wang, Qian; Kawazoe, Yoshiyuki; Jena, Puru

2016-06-07

Exploring a two-dimensional intrinsic quantum spin Hall state with a large band gap as well as an anomalous Hall state in realizable materials is one of the most fundamental and important goals for future applications in spintronics, valleytronics, and quantum computing. Here, by combining first-principles calculations with a tight-binding model, we predict that Sb or Bi can epitaxially grow on a stable and ferromagnetic MnO2 thin film substrate, forming a flat honeycomb sheet. The flatness of Sb or Bi provides an opportunity for the existence of Dirac points in the Brillouin zone, with its position effectively tuned by surface hydrogenation. The Dirac points in spin up and spin down channels split due to the proximity effects induced by MnO2. In the presence of both intrinsic and Rashba spin-orbit coupling, we find two band gaps exhibiting a large band gap quantum spin Hall state and a nearly quantized anomalous Hall state which can be tuned by adjusting the Fermi level. Our findings provide an efficient way to realize both quantized intrinsic spin Hall conductivity and anomalous Hall conductivity in a single material.

Establishment of a Hall Thruster Cluster

DTIC Science & Technology

2004-02-01

DURIP funds were used to develop a Hall thruster cluster test facility centered around the University of Michigan Large Vacuum Test Facility and a 2x2 cluster of BUSEK 600 W BHT-600 Hall thrusters. This capability will facilitate our three-year program to address the issue of high-power CDT operation and to provide insight on how chamber effects influence CDT engine/cluster characteristics.

Direct observation of the skyrmion Hall effect

DOE PAGES

Jiang, Wanjun; Zhang, Xichao; Yu, Guoqiang; ...

2016-09-19

The well-known Hall effect describes the transverse deflection of charged particles (electrons/holes) as a result of the Lorentz force. Similarly, it is intriguing to examine if quasi-particles without an electric charge, but with a topological charge, show related transverse motion. Magnetic skyrmions with a well-defined spin texture with a unit topological charge serve as good candidates to test this hypothesis. In spite of the recent progress made on investigating magnetic skyrmions, direct observation of the skyrmion Hall effect has remained elusive. Here, by using a current-induced spin Hall spin torque, we experimentally demonstrate the skyrmion Hall effect, and the resultantmore » skyrmion accumulation, by driving skyrmions from the creep-motion regime (where their dynamics are influenced by pinning defects) into the steady-flow-motion regime. Lastly, the experimental observation of transverse transport of skyrmions due to topological charge may potentially create many exciting opportunities, such as topological selection.« less

Plasmon Geometric Phase and Plasmon Hall Shift

NASA Astrophysics Data System (ADS)

Shi, Li-kun; Song, Justin C. W.

2018-04-01

The collective plasmonic modes of a metal comprise a simple pattern of oscillating charge density that yields enhanced light-matter interaction. Here we unveil that beneath this familiar facade plasmons possess a hidden internal structure that fundamentally alters its dynamics. In particular, we find that metals with nonzero Hall conductivity host plasmons with an intricate current density configuration that sharply departs from that of ordinary zero Hall conductivity metals. This nontrivial internal structure dramatically enriches the dynamics of plasmon propagation, enabling plasmon wave packets to acquire geometric phases as they scatter. At boundaries, these phases accumulate allowing plasmon waves that reflect off to experience a nonreciprocal parallel shift. This plasmon Hall shift, tunable by Hall conductivity as well as plasmon wavelength, displaces the incident and reflected plasmon trajectories and can be readily probed by near-field photonics techniques. Anomalous plasmon geometric phases dramatically enrich the nanophotonics toolbox, and yield radical new means for directing plasmonic beams.

Direct observation of the skyrmion Hall effect

DOE Office of Scientific and Technical Information (OSTI.GOV)

Jiang, Wanjun; Zhang, Xichao; Yu, Guoqiang

The well-known Hall effect describes the transverse deflection of charged particles (electrons/holes) as a result of the Lorentz force. Similarly, it is intriguing to examine if quasi-particles without an electric charge, but with a topological charge, show related transverse motion. Magnetic skyrmions with a well-defined spin texture with a unit topological charge serve as good candidates to test this hypothesis. In spite of the recent progress made on investigating magnetic skyrmions, direct observation of the skyrmion Hall effect has remained elusive. Here, by using a current-induced spin Hall spin torque, we experimentally demonstrate the skyrmion Hall effect, and the resultantmore » skyrmion accumulation, by driving skyrmions from the creep-motion regime (where their dynamics are influenced by pinning defects) into the steady-flow-motion regime. Lastly, the experimental observation of transverse transport of skyrmions due to topological charge may potentially create many exciting opportunities, such as topological selection.« less

L'effet Hall Quantique

NASA Astrophysics Data System (ADS)

Samson, Thomas

Nous proposons une methode permettant d'obtenir une expression pour la conductivite de Hall de structures electroniques bidimensionnelles et nous examinons celle -ci a la limite d'une temperature nulle dans le but de verifier l'effet Hall quantique. Nous allons nous interesser essentiellement a l'effet Hall quantique entier et aux effets fractionnaires inferieurs a un. Le systeme considere est forme d'un gaz d'electrons en interaction faible avec les impuretes de l'echantillon. Le modele du gaz d'electrons consiste en un gaz bidimensionnel d'electrons sans spin expose perpendiculairement a un champ magnetique uniforme. Ce dernier est decrit par le potentiel vecteur vec{rm A} defini dans la jauge de Dingle ou jauge symetrique. Conformement au formalisme de la seconde quantification, l'hamiltonien de ce gaz est represente dans la base des etats a un-corps de Dingle |n,m> et exprime ainsi en terme des operateurs de creation et d'annihilation correspondants a_sp{ rm n m}{dag} et a _{rm n m}. Nous supposons de plus que les electrons du niveau fondamental de Dingle interagissent entre eux via le potentiel coulombien. La methode utilisee fait appel a une equation mai tresse a N-corps, de nature quantique et statistique, et verifiant le second principe de la thermodynamique. A partir de celle-ci, nous obtenons un systeme d'equations differentielles appele hierarchie d'equations quantique dont la resolution nous permet de determiner une equation a un-corps, dite de Boltzmann quantique, et dictant l'evolution de la moyenne statistique de l'operateur non-diagonal a _sp{rm n m}{dag } a_{rm n}, _{rm m}, sous l'action du champ electrique applique vec{rm E}(t). C'est sa solution Tr(p(t) a _sp{rm n m}{dag} a_{rm n},_ {rm m}), qui definit la relation de convolution entre la densite courant de Hall vec{rm J}_{rm H }(t) et le champ electrique vec {rm E}(t) dont la transformee de Laplace-Fourier du noyau nous fournit l'expression de la conductivite de Hall desiree. Pour une valeur de

Optimum Design Rules for CMOS Hall Sensors

PubMed Central

Crescentini, Marco; Biondi, Michele; Romani, Aldo; Tartagni, Marco; Sangiorgi, Enrico

2017-01-01

This manuscript analyzes the effects of design parameters, such as aspect ratio, doping concentration and bias, on the performance of a general CMOS Hall sensor, with insight on current-related sensitivity, power consumption, and bandwidth. The article focuses on rectangular-shaped Hall probes since this is the most general geometry leading to shape-independent results. The devices are analyzed by means of 3D-TCAD simulations embedding galvanomagnetic transport model, which takes into account the Lorentz force acting on carriers due to a magnetic field. Simulation results define a set of trade-offs and design rules that can be used by electronic designers to conceive their own Hall probes. PMID:28375191

Optimum Design Rules for CMOS Hall Sensors.

PubMed

Crescentini, Marco; Biondi, Michele; Romani, Aldo; Tartagni, Marco; Sangiorgi, Enrico

2017-04-04

This manuscript analyzes the effects of design parameters, such as aspect ratio, doping concentration and bias, on the performance of a general CMOS Hall sensor, with insight on current-related sensitivity, power consumption, and bandwidth. The article focuses on rectangular-shaped Hall probes since this is the most general geometry leading to shape-independent results. The devices are analyzed by means of 3D-TCAD simulations embedding galvanomagnetic transport model, which takes into account the Lorentz force acting on carriers due to a magnetic field. Simulation results define a set of trade-offs and design rules that can be used by electronic designers to conceive their own Hall probes.

Piezo Voltage Controlled Planar Hall Effect Devices

PubMed Central

Zhang, Bao; Meng, Kang-Kang; Yang, Mei-Yin; Edmonds, K. W.; Zhang, Hao; Cai, Kai-Ming; Sheng, Yu; Zhang, Nan; Ji, Yang; Zhao, Jian-Hua; Zheng, Hou-Zhi; Wang, Kai-You

2016-01-01

The electrical control of the magnetization switching in ferromagnets is highly desired for future spintronic applications. Here we report on hybrid piezoelectric (PZT)/ferromagnetic (Co2FeAl) devices in which the planar Hall voltage in the ferromagnetic layer is tuned solely by piezo voltages. The change of planar Hall voltage is associated with magnetization switching through 90° in the plane under piezo voltages. Room temperature magnetic NOT and NOR gates are demonstrated based on the piezo voltage controlled Co2FeAl planar Hall effect devices without the external magnetic field. Our demonstration may lead to the realization of both information storage and processing using ferromagnetic materials. PMID:27329068

Piezo Voltage Controlled Planar Hall Effect Devices.

PubMed

Zhang, Bao; Meng, Kang-Kang; Yang, Mei-Yin; Edmonds, K W; Zhang, Hao; Cai, Kai-Ming; Sheng, Yu; Zhang, Nan; Ji, Yang; Zhao, Jian-Hua; Zheng, Hou-Zhi; Wang, Kai-You

2016-06-22

The electrical control of the magnetization switching in ferromagnets is highly desired for future spintronic applications. Here we report on hybrid piezoelectric (PZT)/ferromagnetic (Co2FeAl) devices in which the planar Hall voltage in the ferromagnetic layer is tuned solely by piezo voltages. The change of planar Hall voltage is associated with magnetization switching through 90° in the plane under piezo voltages. Room temperature magnetic NOT and NOR gates are demonstrated based on the piezo voltage controlled Co2FeAl planar Hall effect devices without the external magnetic field. Our demonstration may lead to the realization of both information storage and processing using ferromagnetic materials.

Nulling Hall-Effect Current-Measuring Circuit

NASA Technical Reports Server (NTRS)

Sullender, Craig C.; Vazquez, Juan M.; Berru, Robert I.

1993-01-01

Circuit measures electrical current via combination of Hall-effect-sensing and magnetic-field-nulling techniques. Known current generated by feedback circuit adjusted until it causes cancellation or near cancellation of magnetic field produced in toroidal ferrite core by current measured. Remaining magnetic field measured by Hall-effect sensor. Circuit puts out analog signal and digital signal proportional to current measured. Accuracy of measurement does not depend on linearity of sensing components.

Acoustic Requirements for a Multi-Purpose Hall.

ERIC Educational Resources Information Center

Schulte, W. Allen

2002-01-01

This case study examines the proposed design of a new lecture/recital hall in Centennial Hall at Lynchburg College that will be used for lectures, public events, a film studies course, and musical recitals. It explores the audio-visual challenges presented by the differing acoustical requirements for the building. (EV)

Experimental test of 200 W Hall thruster with titanium wall

NASA Astrophysics Data System (ADS)

Ding, Yongjie; Sun, Hezhi; Peng, Wuji; Xu, Yu; Wei, Liqiu; Li, Hong; Li, Peng; Su, Hongbo; Yu, Daren

2017-05-01

We designed a 200 W Hall thruster based on the technology of pushing down a magnetic field with two permanent magnetic rings. Boron nitride (BN) is an important insulating wall material for Hall thrusters. The discharge characteristics of the designed Hall thruster were studied by replacing BN with titanium (Ti). Experimental results show that the designed Hall thruster can discharge stably for a long time under a Ti channel. Experiments were performed to determine whether the channel and cathode are electrically connected. When the channel wall and cathode are insulated, the divergence angle of the plume increases, but the performance of the Hall thruster is improved in terms of thrust, specific impulse, anode efficiency, and thrust-to-power ratio. Ti exhibits a powerful antisputtering capability, a low emanation rate of gas, and a large structural strength, making it a potential candidate wall material in the design of low-power Hall thrusters.

Magnetometry of micro-magnets with electrostatically defined Hall bars

DOE Office of Scientific and Technical Information (OSTI.GOV)

Lachance-Quirion, Dany; Camirand Lemyre, Julien; Bergeron, Laurent

2015-11-30

Micro-magnets are key components for quantum information processing with individual spins, enabling arbitrary rotations and addressability. In this work, characterization of sub-micrometer sized CoFe ferromagnets is performed with Hall bars electrostatically defined in a two-dimensional electron gas. Due to the ballistic nature of electron transport in the cross junction of the Hall bar, anomalies such as the quenched Hall effect appear near zero external magnetic field, thus hindering the sensitivity of the magnetometer to small magnetic fields. However, it is shown that the sensitivity of the diffusive limit can be almost completely restored at low temperatures using a large currentmore » density in the Hall bar of about 10 A/m. Overcoming the size limitation of conventional etched Hall bars with electrostatic gating enables the measurement of magnetization curves of 440 nm wide micro-magnets with a signal-to-noise ratio above 10{sup 3}. Furthermore, the inhomogeneity of the stray magnetic field created by the micro-magnets is directly measured using the gate-voltage-dependent width of the sensitive area of the Hall bar.« less

Magnesium Hall Thruster

NASA Technical Reports Server (NTRS)

Szabo, James J.

2015-01-01

This Phase II project is developing a magnesium (Mg) Hall effect thruster system that would open the door for in situ resource utilization (ISRU)-based solar system exploration. Magnesium is light and easy to ionize. For a Mars- Earth transfer, the propellant mass savings with respect to a xenon Hall effect thruster (HET) system are enormous. Magnesium also can be combusted in a rocket with carbon dioxide (CO2) or water (H2O), enabling a multimode propulsion system with propellant sharing and ISRU. In the near term, CO2 and H2O would be collected in situ on Mars or the moon. In the far term, Mg itself would be collected from Martian and lunar regolith. In Phase I, an integrated, medium-power (1- to 3-kW) Mg HET system was developed and tested. Controlled, steady operation at constant voltage and power was demonstrated. Preliminary measurements indicate a specific impulse (Isp) greater than 4,000 s was achieved at a discharge potential of 400 V. The feasibility of delivering fluidized Mg powder to a medium- or high-power thruster also was demonstrated. Phase II of the project evaluated the performance of an integrated, highpower Mg Hall thruster system in a relevant space environment. Researchers improved the medium power thruster system and characterized it in detail. Researchers also designed and built a high-power (8- to 20-kW) Mg HET. A fluidized powder feed system supporting the high-power thruster was built and delivered to Busek Company, Inc.

20th Annual Residence Hall Construction Report

ERIC Educational Resources Information Center

Agron, Joe

2009-01-01

Even in difficult economic times, colleges and universities continue to invest in residence hall construction projects as a way to attract new students and keep existing ones on campus. According to data from "American School & University"'s 20th annual Residence Hall Construction Report, the median new project completed in 2008 was…

Residence Hall Fires.

ERIC Educational Resources Information Center

Wright, Dorothy

1999-01-01

Discusses how one college's experience with a tragic fire in one of its residence halls prompted a reevaluation of its fire-prevention-and-response strategies. Staff training, sprinkler installation, new alarm systems, and exit hardware to help make building exiting more efficient are discussed. (GR)

Tunnelling anomalous and planar Hall effects (Conference Presentation)

NASA Astrophysics Data System (ADS)

Matos-Abiague, Alex; Scharf, Benedikt; Han, Jong E.; Hankiewicz, Ewelina M.; Zutic, Igor

2016-10-01

We theoretically show how the interplay between spin-orbit coupling (SOC) and magnetism can result in a finite tunneling Hall conductance, transverse to the applied bias. For two-dimensional tunnel junctions with a ferromagnetic lead and magnetization perpendicular to the current flow, the detected anomalous Hall voltage can be used to extract information not only about the spin polarization but also about the strength of the interfacial SOC. In contrast, a tunneling current across a ferromagnetic barrier on the surface of a three-dimensional topological insulator (TI) can induce a planar Hall response even when the magnetization is oriented along the current flow[1]. The tunneling nature of the states contributing to the planar Hall conductance can be switched from the ordinary to the Klein regimes by the electrostatic control of the barrier strength. This allows for an enhancement of the transverse response and a giant Hall angle, with the tunneling planar Hall conductance exceeding the longitudinal component. Despite the simplicity of a single ferromagnetic region, the TI/ferromagnet system exhibits a variety of functionalities. In addition to a spin-valve operation for magnetic sensing and storing information, positive, negative, and negative differential conductances can be tuned by properly adjusting the barrier potential and/or varying the magnetization direction. Such different resistive behaviors in the same system are attractive for potential applications in reconfigurable spintronic devices. [1] B. Scharf, A. Matos-Abiague, J. E. Han, E. M. Hankiewicz, and I. Zutic, arXiv:1601.01009 (2016).

NASA HERMeS Hall Thruster Electrical Configuration Characterization

NASA Technical Reports Server (NTRS)

Peterson, Peter Y.; Kamhawi, Hani; Huang, Wensheng; Yim, John; Herman, Daniel; Williams, George; Gilland, James; Hofer, Richard

2015-01-01

The NASA Hall Effect Rocket with Magnetic Shielding (HERMeS) 12.5 kW Technology Demonstration Unit-1 (TDU-1) Hall thruster has been the subject of extensive technology maturation in preparation for development into a flight ready propulsion system. Part of the technology maturation was to test the TDU-1 thruster in several ground based electrical configurations to assess the thruster robustness and suitability to successful in-space operation. The ground based electrical configuration testing has recently been demonstrated as an important step in understanding and assessing how a Hall thruster may operate differently in-space compared to ground based testing, and to determine the best configuration to conduct development and qualification testing. This paper describes the electrical configuration testing of the HERMeS TDU-1 Hall thruster in NASA Glenn Research Center's Vacuum Facility 5. The three electrical configurations examined were 1) thruster body tied to facility ground, 2) thruster floating, and 3) thruster body electrically tied to cathode common. The HERMeS TDU-1 Hall thruster was also configured with two different exit plane boundary conditions, dielectric and conducting, to examine the influence on the electrical configuration characterization.

Perception of music dynamics in concert hall acoustics.

PubMed

Pätynen, Jukka; Lokki, Tapio

2016-11-01

Dynamics is one of the principal means of expressivity in Western classical music. Still, preceding research on room acoustics has mostly neglected the contribution of music dynamics to the acoustic perception. This study investigates how the different concert hall acoustics influence the perception of varying music dynamics. An anechoic orchestra signal, containing a step in music dynamics, was rendered in the measured acoustics of six concert halls at three seats in each. Spatial sound was reproduced through a loudspeaker array. By paired comparison, naive subjects selected the stimuli that they considered to change more during the music. Furthermore, the subjects described their foremost perceptual criteria for each selection. The most distinct perceptual factors differentiating the rendering of music dynamics between halls include the dynamic range, and varying width of sound and reverberance. The results confirm the hypothesis that the concert halls render the performed music dynamics differently, and with various perceptual aspects. The analysis against objective room acoustic parameters suggests that the perceived dynamic contrasts are pronounced by acoustics that provide stronger sound and more binaural incoherence by a lateral sound field. Concert halls that enhance the dynamics have been found earlier to elicit high subjective preference.

Graphene/Si CMOS hybrid hall integrated circuits.

PubMed

Huang, Le; Xu, Huilong; Zhang, Zhiyong; Chen, Chengying; Jiang, Jianhua; Ma, Xiaomeng; Chen, Bingyan; Li, Zishen; Zhong, Hua; Peng, Lian-Mao

2014-07-07

Graphene/silicon CMOS hybrid integrated circuits (ICs) should provide powerful functions which combines the ultra-high carrier mobility of graphene and the sophisticated functions of silicon CMOS ICs. But it is difficult to integrate these two kinds of heterogeneous devices on a single chip. In this work a low temperature process is developed for integrating graphene devices onto silicon CMOS ICs for the first time, and a high performance graphene/CMOS hybrid Hall IC is demonstrated. Signal amplifying/process ICs are manufactured via commercial 0.18 um silicon CMOS technology, and graphene Hall elements (GHEs) are fabricated on top of the passivation layer of the CMOS chip via a low-temperature micro-fabrication process. The sensitivity of the GHE on CMOS chip is further improved by integrating the GHE with the CMOS amplifier on the Si chip. This work not only paves the way to fabricate graphene/Si CMOS Hall ICs with much higher performance than that of conventional Hall ICs, but also provides a general method for scalable integration of graphene devices with silicon CMOS ICs via a low-temperature process.

Localization in a quantum spin Hall system.

PubMed

Onoda, Masaru; Avishai, Yshai; Nagaosa, Naoto

2007-02-16

The localization problem of electronic states in a two-dimensional quantum spin Hall system (that is, a symplectic ensemble with topological term) is studied by the transfer matrix method. The phase diagram in the plane of energy and disorder strength is exposed, and demonstrates "levitation" and "pair annihilation" of the domains of extended states analogous to that of the integer quantum Hall system. The critical exponent nu for the divergence of the localization length is estimated as nu congruent with 1.6, which is distinct from both exponents pertaining to the conventional symplectic and the unitary quantum Hall systems. Our analysis strongly suggests a different universality class related to the topology of the pertinent system.

Selective Capture of CWAs and Containment of Their Neutralization Byproducts by Porous Frameworks Presenting Self-Amplifying and Self-Regulating Reactivities

DTIC Science & Technology

2013-02-04

Intl. Symposium on Macrocyclic and Supramolecular Chemistry, June 2010, Nara, Japan (Plenary talk). O. M. Yaghi, Zeolitic imidazolate frameworks, 5th...International Zeolite Membrane Meeting, May 2010, Loutraki, Greece (Plenary talk). O. M. Yaghi, Reticular chemistry and its applications to clean energy

Plume Characteristics of the BHT-HD-600 Hall Thruster (Preprint)

DTIC Science & Technology

2006-07-01

Hall thruster on spacecraft, a number of plume properties have been measured. These include current density using a Faraday probe, ion energy distribution using a retarding potential analyzer, and ion species fractions using an E x B probe. The BHT-HD-600 Hall thruster is a nominally 600 W xenon Hall thruster developed by Busek Co. Inc. for the U.S. Air Force Research Laboratory. Plume characterization of Hall thrusters is required to fully understand the impacts of thruster operation on spacecraft. Much of these plume data are

Facilty Focus: Residence Halls.

ERIC Educational Resources Information Center

Hunnewell, James F., Jr.

2002-01-01

Describes the Western Ridge Residence at Colorado College and Beard Hall at Wheaton College. The buildings feature multiple levels that take advantage of views and also help create a "homey" feeling. (EV)

A holographic model for the fractional quantum Hall effect

NASA Astrophysics Data System (ADS)

Lippert, Matthew; Meyer, René; Taliotis, Anastasios

2015-01-01

Experimental data for fractional quantum Hall systems can to a large extent be explained by assuming the existence of a Γ0(2) modular symmetry group commuting with the renormalization group flow and hence mapping different phases of two-dimensional electron gases into each other. Based on this insight, we construct a phenomenological holographic model which captures many features of the fractional quantum Hall effect. Using an -invariant Einstein-Maxwell-axio-dilaton theory capturing the important modular transformation properties of quantum Hall physics, we find dyonic diatonic black hole solutions which are gapped and have a Hall conductivity equal to the filling fraction, as expected for quantum Hall states. We also provide several technical results on the general behavior of the gauge field fluctuations around these dyonic dilatonic black hole solutions: we specify a sufficient criterion for IR normalizability of the fluctuations, demonstrate the preservation of the gap under the action, and prove that the singularity of the fluctuation problem in the presence of a magnetic field is an accessory singularity. We finish with a preliminary investigation of the possible IR scaling solutions of our model and some speculations on how they could be important for the observed universality of quantum Hall transitions.

A New Definition in Atlanta: Q&A with Beverly Hall

ERIC Educational Resources Information Center

Crow, Tracy

2010-01-01

Beverly Hall has been superintendent of Atlanta Public Schools since 1999. Before coming to Atlanta, Hall was state district superintendent of Newark Public Schools, deputy chancellor for instruction of New York City Public Schools, superintendent of Community School District 27 in New York City, and a principal in Brooklyn. Hall chairs Harvard…

Quantum Hall Ferroelectrics and Nematics in Multivalley Systems

NASA Astrophysics Data System (ADS)

Sodemann, Inti; Zhu, Zheng; Fu, Liang

2017-10-01

We study broken symmetry states at integer Landau-level fillings in multivalley quantum Hall systems whose low-energy dispersions are anisotropic. When the Fermi surface of individual pockets lacks twofold rotational symmetry, like in bismuth (111) [Feldman et al. , Observation of a Nematic Quantum Hall Liquid on the Surface of Bismuth, Science 354, 316 (2016), 10.1126/science.aag1715] and in Sn1 -xPbxSe (001) [Dziawa et al., Topological Crystalline Insulator States in Pb1 -xSnxSe , Nat. Mater. 11, 1023 (2012), 10.1038/nmat3449] surfaces, interactions tend to drive the formation of quantum Hall ferroelectric states. We demonstrate that the dipole moment in these states has an intimate relation to the Fermi surface geometry of the parent metal. In quantum Hall nematic states, like those arising in AlAs quantum wells, we demonstrate the existence of unusually robust Skyrmion quasiparticles.

Nonequilibrium Hall Response After a Topological Quench

NASA Astrophysics Data System (ADS)

Unal, F. Nur; Mueller, Erich; Oktel, M. O.

2017-04-01

We theoretically study the Hall response of a lattice system following a quench where the topology of a filled band is suddenly changed. In the limit where the physics is dominated by a single Dirac cone, we find that the change in the Hall conductivity is two-thirds of the quantum of conductivity. We explore this universal behavior in the Haldane model, and discuss cold-atom experiments for its observation. Beyond linear response, the Hall effect crosses over from fractional to integer values. We investigate finite-size effects, and the role of the harmonic confinement. Furthermore, we explore the magnetic field quenches in ladders formed in synthetic dimensions. This work is supported by TUBITAK, NSFPHY-1508300, ARO-MURI W9111NF-14-1-0003.

End-hall thrusters

NASA Technical Reports Server (NTRS)

Kaufman, H. R.; Robinson, R. S.; Day, M. L.; Haag, T. W.

1990-01-01

The end-Hall thruster can provide electric propulsion with fixed masses, specific impulses, and power-to-thrust ratios intermediate of an arcjet and a gridded (electrostatic) ion thruster. With these characteristics, this thruster is a candidate for missions of intermediate difficulty, such as the north-south stationkeeping of geostationary satellites.

Intrinsic Spin-Hall Effect in n-Doped Bulk GaAs

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bernevig, B.Andrei; Zhang, Shou-Cheng; /Stanford U., Phys. Dept.

2010-01-15

We show that the bulk Dresselhauss (k{sup 3}) spin-orbit coupling term leads to an intrinsic spin-Hall effect in n-doped bulk GaAs, but without the appearance of uniform magnetization. The spin-Hall effect in strained and unstrained bulk GaAs has been recently observed experimentally by Kato et. al. [1]. We show that the experimental result is quantitatively consistent with the intrinsic spin-Hall effect due to the Dresselhauss term, when lifetime broadening is taken into account. On the other hand, extrinsic contribution to the spin-Hall effect is several orders of magnitude smaller than the observed effect.

Graphene/Si CMOS Hybrid Hall Integrated Circuits

PubMed Central

Huang, Le; Xu, Huilong; Zhang, Zhiyong; Chen, Chengying; Jiang, Jianhua; Ma, Xiaomeng; Chen, Bingyan; Li, Zishen; Zhong, Hua; Peng, Lian-Mao

2014-01-01

Graphene/silicon CMOS hybrid integrated circuits (ICs) should provide powerful functions which combines the ultra-high carrier mobility of graphene and the sophisticated functions of silicon CMOS ICs. But it is difficult to integrate these two kinds of heterogeneous devices on a single chip. In this work a low temperature process is developed for integrating graphene devices onto silicon CMOS ICs for the first time, and a high performance graphene/CMOS hybrid Hall IC is demonstrated. Signal amplifying/process ICs are manufactured via commercial 0.18 um silicon CMOS technology, and graphene Hall elements (GHEs) are fabricated on top of the passivation layer of the CMOS chip via a low-temperature micro-fabrication process. The sensitivity of the GHE on CMOS chip is further improved by integrating the GHE with the CMOS amplifier on the Si chip. This work not only paves the way to fabricate graphene/Si CMOS Hall ICs with much higher performance than that of conventional Hall ICs, but also provides a general method for scalable integration of graphene devices with silicon CMOS ICs via a low-temperature process. PMID:24998222

Diagnostics Systems for Permanent Hall Thrusters Development

NASA Astrophysics Data System (ADS)

Ferreira, Jose Leonardo; Soares Ferreira, Ivan; Santos, Jean; Miranda, Rodrigo; Possa, M. Gabriela

This work describes the development of Permanent Magnet Hall Effect Plasma Thruster (PHALL) and its diagnostic systems at The Plasma Physics Laboratory of University of Brasilia. The project consists on the construction and characterization of plasma propulsion engines based on the Hall Effect. Electric thrusters have been employed in over 220 successful space missions. Two types stand out: the Hall-Effect Thruster (HET) and the Gridded Ion Engine (GIE). The first, which we deal with in this project, has the advantage of greater simplicity of operation, a smaller weight for the propulsion subsystem and a longer shelf life. It can operate in two configurations: magnetic layer and anode layer, the difference between the two lying in the positioning of the anode inside the plasma channel. A Hall-Effect Thruster-HET is a type of plasma thruster in which the propellant gas is ionized and accelerated by a magneto hydrodynamic effect combined with electrostatic ion acceleration. So the essential operating principle of the HET is that it uses a J x B force and an electrostatic potential to accelerate ions up to high speeds. In a HET, the attractive negative charge is provided by electrons at the open end of the Thruster instead of a grid, as in the case of the electrostatic ion thrusters. A strong radial magnetic field is used to hold the electrons in place, with the combination of the magnetic field and the electrostatic potential force generating a fast circulating electron current, the Hall current, around the axis of the Thruster, mainly composed by drifting electrons in an ion plasma background. Only a slow axial drift towards the anode occurs. The main attractive features of the Hall-Effect Thruster are its simple design and operating principles. Most of the Hall-Effect Thrusters use electromagnet coils to produce the main magnetic field responsible for plasma generation and acceleration. In this paper we present a different new concept, a Permanent Magnet Hall

Formulation of the relativistic quantum Hall effect and parity anomaly

NASA Astrophysics Data System (ADS)

Yonaga, Kouki; Hasebe, Kazuki; Shibata, Naokazu

2016-06-01

We present a relativistic formulation of the quantum Hall effect on Haldane sphere. An explicit form of the pseudopotential is derived for the relativistic quantum Hall effect with/without mass term. We clarify particular features of the relativistic quantum Hall states with the use of the exact diagonalization study of the pseudopotential Hamiltonian. Physical effects of the mass term to the relativistic quantum Hall states are investigated in detail. The mass term acts as an interpolating parameter between the relativistic and nonrelativistic quantum Hall effects. It is pointed out that the mass term unevenly affects the many-body physics of the positive and negative Landau levels as a manifestation of the "parity anomaly." In particular, we explicitly demonstrate the instability of the Laughlin state of the positive first relativistic Landau level with the reduction of the charge gap.

Hole mobilities and the effective Hall factor in p-type GaAs

NASA Astrophysics Data System (ADS)

Wenzel, M.; Irmer, G.; Monecke, J.; Siegel, W.

1997-06-01

We prove the effective Hall factor in p-GaAs to be larger than values discussed in the literature up to now. The scattering rates for the relevant scattering mechanisms in p-GaAs have been recalculated after critical testing the existing models. These calculations allow to deduce theoretical drift and theoretical Hall mobilities as functions of temperature which can be compared with measured data. Theoretical Hall factors in the heavy and light hole bands and an effective Hall factor result. The calculated room temperature values of the drift mobility and of the effective Hall factor are 118 cm2/V s and 3.6, respectively. The fitted acoustic deformation potential E1=7.9 eV and the fitted optical coupling constant DK=1.24×1011 eV/m are close to values published before. It is shown that the measured strong dependence of the Hall mobility on the Hall concentration is not mainly caused by scattering by ionized impurities but by the dependence of the effective Hall factor on the hole concentration.

4. MESS HALL, FRONT DETAIL OVER DOOR, LOOKING EAST. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

4. MESS HALL, FRONT DETAIL OVER DOOR, LOOKING EAST. - NIKE Missile Base C-84, Mess Hall, North of Launch Area Entrance Drive, east of Officers' Quarters & Administration Building, Barrington, Cook County, IL

3. MESS HALL, REAR SIDE, LOOKING NORTH. NIKE Missile ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

3. MESS HALL, REAR SIDE, LOOKING NORTH. - NIKE Missile Base SL-40, Mess Hall, East central portion of base, southeast of Barracks No. 2, northwest of Administration Building, Hecker, Monroe County, IL

2. MESS HALL, RIGHT SIDE, LOOKING EAST. NIKE Missile ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

2. MESS HALL, RIGHT SIDE, LOOKING EAST. - NIKE Missile Base SL-40, Mess Hall, East central portion of base, southeast of Barracks No. 2, northwest of Administration Building, Hecker, Monroe County, IL

Japan.

PubMed

1987-02-01

Japan is composed of 4 main islands and more than 3900 smaller islands and has 317.7 persons/square kilometer. This makes it one of the most densely populated nations in the world. Religion is an important force in the life of the Japanese and most consider themselves Buddhists. Schooling is free through junior high but 90% of Japanese students complete high school. In fact, Japan enjoys one of the highest literacy rates in the world. There are over 178 newspapers and 3500 magazines published in Japan and the number of new book titles issued each year is greater than that in the US. Since WW1, Japan expanded its influence in Asia and its holdings in the Pacific. However, as a direct result of WW2, Japan lost all of its overseas possessions and was able to retain only its own islands. Since 1952, Japan has been ruled by conservative governments which cooperate closely with the West. Great economic growth has come since the post-treaty period. Japan as a constitutional monarchy operates within the framework of a constitution which became effective in May 1947. Executive power is vested in a cabinet which includes the prime minister and the ministers of state. Japan is one of the most politically stable of the postwar democracies and the Liberal Democratic Party is representative of Japanese moderate conservatism. The economy of Japan is strong and growing. With few resources, there is only 19% of Japanese land suitable for cultivation. Its exports earn only about 19% of the country's gross national product. More than 59 million workers comprise Japan's labor force, 40% of whom are women. Japan and the US are strongly linked trading partners and after Canada, Japan is the largest trading partner of the US. Foreign policy since 1952 has fostered close cooperation with the West and Japan is vitally interested in good relations with its neighbors. Relations with the Soviet Union are not close although Japan is attempting to improve the situation. US policy is based on

ION ACOUSTIC TURBULENCE, ANOMALOUS TRANSPORT, AND SYSTEM DYNAMICS IN HALL EFFECT THRUSTERS

DTIC Science & Technology

2017-06-30

17394 4 / 13 HALL EFFECT THRUSTERS Hall Effect Thrusters (HET): Traditionally Modeled in R-Z Named for Hall Current in θ Uses Quasi -1D Electron Fluid...HET): Traditionally Modeled in R-Z Named for Hall Current in θ Uses Quasi -1D Electron Fluid Solve Ohm’s Law→ No e−-momentum Zθ Unrolled to YZ...Current in θ Uses Quasi -1D Electron Fluid Solve Ohm’s Law→ No e−-momentum Zθ Unrolled to YZ Electron ExB Drift Unmagnetized Ions Results in Hall Current

Are quantum spin Hall edge modes more resilient to disorder, sample geometry and inelastic scattering than quantum Hall edge modes?

PubMed

Mani, Arjun; Benjamin, Colin

2016-04-13

On the surface of 2D topological insulators, 1D quantum spin Hall (QSH) edge modes occur with Dirac-like dispersion. Unlike quantum Hall (QH) edge modes, which occur at high magnetic fields in 2D electron gases, the occurrence of QSH edge modes is due to spin-orbit scattering in the bulk of the material. These QSH edge modes are spin-dependent, and chiral-opposite spins move in opposing directions. Electronic spin has a larger decoherence and relaxation time than charge. In view of this, it is expected that QSH edge modes will be more robust to disorder and inelastic scattering than QH edge modes, which are charge-dependent and spin-unpolarized. However, we notice no such advantage accrues in QSH edge modes when subjected to the same degree of contact disorder and/or inelastic scattering in similar setups as QH edge modes. In fact we observe that QSH edge modes are more susceptible to inelastic scattering and contact disorder than QH edge modes. Furthermore, while a single disordered contact has no effect on QH edge modes, it leads to a finite charge Hall current in the case of QSH edge modes, and thus a vanishing of the pure QSH effect. For more than a single disordered contact while QH states continue to remain immune to disorder, QSH edge modes become more susceptible--the Hall resistance for the QSH effect changes sign with increasing disorder. In the case of many disordered contacts with inelastic scattering included, while quantization of Hall edge modes holds, for QSH edge modes a finite charge Hall current still flows. For QSH edge modes in the inelastic scattering regime we distinguish between two cases: with spin-flip and without spin-flip scattering. Finally, while asymmetry in sample geometry can have a deleterious effect in the QSH case, it has no impact in the QH case.

5. MESS HALL, RIGHT AND REAR SIDES, LOOKING NORTHEAST. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

5. MESS HALL, RIGHT AND REAR SIDES, LOOKING NORTHEAST. - NIKE Missile Base SL-40, Mess Hall, East central portion of base, southeast of Barracks No. 2, northwest of Administration Building, Hecker, Monroe County, IL

6. PHOTOCOPY, PLAN AND SCHEDULE DRAWING OF MESS HALL. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

6. PHOTOCOPY, PLAN AND SCHEDULE DRAWING OF MESS HALL. - NIKE Missile Base SL-40, Mess Hall, East central portion of base, southeast of Barracks No. 2, northwest of Administration Building, Hecker, Monroe County, IL

7. PHOTOCOPY, ELEVATION AND SECTION DRAWING OF MESS HALL. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

7. PHOTOCOPY, ELEVATION AND SECTION DRAWING OF MESS HALL. - NIKE Missile Base SL-40, Mess Hall, East central portion of base, southeast of Barracks No. 2, northwest of Administration Building, Hecker, Monroe County, IL

4. MESS HALL, FRONT AND LEFT SIDES, LOOKING SOUTHWEST. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

4. MESS HALL, FRONT AND LEFT SIDES, LOOKING SOUTHWEST. - NIKE Missile Base SL-40, Mess Hall, East central portion of base, southeast of Barracks No. 2, northwest of Administration Building, Hecker, Monroe County, IL

Determination of intrinsic spin Hall angle in Pt

DOE Office of Scientific and Technical Information (OSTI.GOV)

Wang, Yi; Deorani, Praveen; Qiu, Xuepeng

2014-10-13

The spin Hall angle in Pt is evaluated in Pt/NiFe bilayers by spin torque ferromagnetic resonance measurements and is found to increase with increasing the NiFe thickness. To extract the intrinsic spin Hall angle in Pt by estimating the total spin current injected into NiFe from Pt, the NiFe thickness dependent measurements are performed and the spin diffusion in the NiFe layer is taken into account. The intrinsic spin Hall angle of Pt is determined to be 0.068 at room temperature and is found to be almost constant in the temperature range of 13–300 K.

Performance of a Low-Power Cylindrical Hall Thruster

NASA Technical Reports Server (NTRS)

Polzin, Kurt A.; Markusic, Thomas E.; Stanojev, Boris J.; Dehoyos, Amado; Raitses, Yevgeny; Smirnov, Artem; Fisch, Nathaniel J.

2007-01-01

Recent mission studies have shown that a Hall thruster which operates at relatively constant thrust efficiency (45-55%) over a broad power range (300W - 3kW) is enabling for deep space science missions when compared with slate-of-the-art ion thrusters. While conventional (annular) Hall thrusters can operate at high thrust efficiency at kW power levels, it is difficult to construct one that operates over a broad power envelope down to 0 (100 W) while maintaining relatively high efficiency. In this note we report the measured performance (I(sub sp), thrust and efficiency) of a cylindrical Hall thruster operating at 0 (100 W) input power.

Cylindrical geometry hall thruster

DOEpatents

Raitses, Yevgeny; Fisch, Nathaniel J.

2002-01-01

An apparatus and method for thrusting plasma, utilizing a Hall thruster with a cylindrical geometry, wherein ions are accelerated in substantially the axial direction. The apparatus is suitable for operation at low power. It employs small size thruster components, including a ceramic channel, with the center pole piece of the conventional annular design thruster eliminated or greatly reduced. Efficient operation is accomplished through magnetic fields with a substantial radial component. The propellant gas is ionized at an optimal location in the thruster. A further improvement is accomplished by segmented electrodes, which produce localized voltage drops within the thruster at optimally prescribed locations. The apparatus differs from a conventional Hall thruster, which has an annular geometry, not well suited to scaling to small size, because the small size for an annular design has a great deal of surface area relative to the volume.

A Monolithic CMOS Magnetic Hall Sensor with High Sensitivity and Linearity Characteristics

PubMed Central

Huang, Haiyun; Wang, Dejun; Xu, Yue

2015-01-01

This paper presents a fully integrated linear Hall sensor by means of 0.8 μm high voltage complementary metal-oxide semiconductor (CMOS) technology. This monolithic Hall sensor chip features a highly sensitive horizontal switched Hall plate and an efficient signal conditioner using dynamic offset cancellation technique. An improved cross-like Hall plate achieves high magnetic sensitivity and low offset. A new spinning current modulator stabilizes the quiescent output voltage and improves the reliability of the signal conditioner. The tested results show that at the 5 V supply voltage, the maximum Hall output voltage of the monolithic Hall sensor microsystem, is up to ±2.1 V and the linearity of Hall output voltage is higher than 99% in the magnetic flux density range from ±5 mT to ±175 mT. The output equivalent residual offset is 0.48 mT and the static power consumption is 20 mW. PMID:26516864

A Monolithic CMOS Magnetic Hall Sensor with High Sensitivity and Linearity Characteristics.

PubMed

Huang, Haiyun; Wang, Dejun; Xu, Yue

2015-10-27

This paper presents a fully integrated linear Hall sensor by means of 0.8 μm high voltage complementary metal-oxide semiconductor (CMOS) technology. This monolithic Hall sensor chip features a highly sensitive horizontal switched Hall plate and an efficient signal conditioner using dynamic offset cancellation technique. An improved cross-like Hall plate achieves high magnetic sensitivity and low offset. A new spinning current modulator stabilizes the quiescent output voltage and improves the reliability of the signal conditioner. The tested results show that at the 5 V supply voltage, the maximum Hall output voltage of the monolithic Hall sensor microsystem, is up to ±2.1 V and the linearity of Hall output voltage is higher than 99% in the magnetic flux density range from ±5 mT to ±175 mT. The output equivalent residual offset is 0.48 mT and the static power consumption is 20 mW.

Proton Knock-Out in Hall A

DOE Office of Scientific and Technical Information (OSTI.GOV)

Kees de Jager

Proton knock-out is studied in a broad program in Hall A at Jefferson Lab. The first experiment performed in Hall A studied the {sup 16}O(e,e'p) reaction. Since then proton knock-out experiments have studied a variety of aspects of that reaction, from single-nucleon properties to its mechanism, such as final-state interactions and two-body currents, in nuclei from {sup 2}H to {sup 16}O. In this review the results of this program will be summarized and an outlook given of future accomplishments.

Astronaut Hall of Fame Induction Ceremony

NASA Image and Video Library

2017-05-19

In a ceremony set beneath Space Shuttle Atlantis, veteran astronauts C. Michael Foale and Ellen Ochoa are inducted into the U.S. Astronaut Hall of Fame. Foale and Ochoa make up the 16th group of space shuttle astronauts to be inducted into the Hall of Fame, and their addition to the group brings the total number of inductees to 95. More than 20 legendary astronauts were on hand to welcome the inductees, including: Robert Cabana, Dan Brandenstein, Al Worden, Charlie Duke, Charles Bolden, Michael Coats, Robert Crippen, Rhea Seddon, and Fred Gregory.

Hall Sweet Home

ERIC Educational Resources Information Center

Oguntoyinbo, Lekan

2011-01-01

Many urban and commuter universities have their sights set on students who are unlikely to connect with the college and likely to fail unless the right strategies are put in place to help them graduate. In efforts to improve retention rates, commuter colleges are looking to an unusual suspect: residence halls. The author discusses how these…

Hall Effect Spintronics

DTIC Science & Technology

2014-01-01

ferromagnetic films with perpendicular anisotropy were examined, and finally, the magnetoresistance and Hall effect in Manganese- doped Germanium was...interest in ferromagnetic semiconductors. Germanium doped with Mn is particularly interesting Distribution A: Approved for public release...unavoidable, and doped films are strongly inhomogeneous with GexMny, metallic precipitates coexisting with Mn-rich regions and Mn dilute matrix

G. Stanley Hall, Child Study, and the American Public.

PubMed

Young, Jacy L

2016-01-01

In the final decades of the 19th century psychologist Granville Stanley Hall was among the most prominent pedagogical experts in the nation. The author explores Hall's carefully crafted persona as an educational expert, and his engagements with the American public, from 1880 to 1900, arguably the height of his influence. Drawing from accounts of Hall's lecture circuit in the popular press, a map of his talks across the nation is constructed to assess the geographic scope of his influence. These talks to educators on the psychology underlying childhood and pedagogy, and his views and research on child life more generally, were regularly discussed in newspapers and popular periodicals. The venues in which Hall's ideas were disseminated, discussed, and in some cases, dismissed are described. His efforts to mobilize popular support for, and assistance with, his research endeavors in child study are also discussed. Such efforts were controversial both within the burgeoning field of psychology and among the public. Through his various involvements in pedagogy, and concerted efforts to engage with the American public, Hall helped establish psychology's relevance to parenting and educational practices.

Observation of anomalous Hall effect in a non-magnetic two-dimensional electron system

PubMed Central

Maryenko, D.; Mishchenko, A. S.; Bahramy, M. S.; Ernst, A.; Falson, J.; Kozuka, Y.; Tsukazaki, A.; Nagaosa, N.; Kawasaki, M.

2017-01-01

Anomalous Hall effect, a manifestation of Hall effect occurring in systems without time-reversal symmetry, has been mostly observed in ferromagnetically ordered materials. However, its realization in high-mobility two-dimensional electron system remains elusive, as the incorporation of magnetic moments deteriorates the device performance compared to non-doped structure. Here we observe systematic emergence of anomalous Hall effect in various MgZnO/ZnO heterostructures that exhibit quantum Hall effect. At low temperatures, our nominally non-magnetic heterostructures display an anomalous Hall effect response similar to that of a clean ferromagnetic metal, while keeping a large anomalous Hall effect angle θAHE≈20°. Such a behaviour is consistent with Giovannini–Kondo model in which the anomalous Hall effect arises from the skew scattering of electrons by localized paramagnetic centres. Our study unveils a new aspect of many-body interactions in two-dimensional electron systems and shows how the anomalous Hall effect can emerge in a non-magnetic system. PMID:28300133

Nonlinear excitation of long-wavelength modes in Hall plasmas

NASA Astrophysics Data System (ADS)

Lakhin, V. P.; Ilgisonis, V. I.; Smolyakov, A. I.; Sorokina, E. A.

2016-10-01

Hall plasmas with magnetized electrons and unmagnetized ions exhibit a wide range of small scale fluctuations in the lower-hybrid frequency range as well as low-frequency large scale modes. Modulational instability of lower-hybrid frequency modes is investigated in this work for typical conditions in Hall plasma devices such as magnetrons and Hall thrusters. In these conditions, the dispersion of the waves in the lower-hybrid frequency range propagating perpendicular to the external magnetic field is due to the gradients of the magnetic field and the plasma density. It is shown that such lower-hybrid modes are unstable with respect to the secondary instability of the large scale quasimode perturbations. It is suggested that the large scale slow coherent modes observed in a number of Hall plasma devices may be explained as a result of such secondary instabilities.

Performance Characteristics of a 5 kW Laboratory Hall Thruster

DTIC Science & Technology

1996-07-01

Characteristics of a 5 kW Laboratory Hall Thruster James M. Haas’, Frank S. Gulczinski III%, and Alec D. Gallimoret Plasmadynamics and Electric Propulsion...the information learned from the study of this thruster applicable to the understanding of its commercial counterparts. INTRODUCTION Hall thrusters are...few in number at this time; and those that do exist are intended primarily Current generation Hall thruster research has for flight qualification

Performance Potential of Plasma Thrusters: Arcjet and Hall Thruster Modeling

DTIC Science & Technology

1993-09-17

FUNDING NUMBERS Performance Potential of Plasma Thrusters: \\ Arcjet and Hall Thruster Modeling FQ 8671-9300908 S ,,G-AFOSR-91-0256 6. AUTHOR(S) Manuel...models for the internal physics and the performance of hydrogen arcjets and Hall thrusters , respectively. These are thought to represent the state of...work. 93-24268 14. SUBJECT TERMS IS. NUMBER OF PAGES Electric Propulsion, Arcjets, Hall Thrusters 15 16. PRICE COOE 17. SECURITY CLASSIFICATION I18

Spin Hall Effect in Doped Semiconductor Structures

NASA Astrophysics Data System (ADS)

Tse, Wang-Kong; Das Sarma, S.

2006-02-01

In this Letter we present a microscopic theory of the extrinsic spin Hall effect based on the diagrammatic perturbation theory. Side-jump and skew-scattering contributions are explicitly taken into account to calculate the spin Hall conductivity, and we show that their effects scale as σxySJ/σxySS˜(ℏ/τ)/ɛF, with τ being the transport relaxation time. Motivated by recent experimental work we apply our theory to n- and p-doped 3D and 2D GaAs structures, obtaining σs/σc˜10-3-10-4, where σs(c) is the spin Hall (charge) conductivity, which is in reasonable agreement with the recent experimental results of Kato et al. [Science 306, 1910 (2004)]SCIEAS0036-807510.1126/science.1105514 in n-doped 3D GaAs system.

Spin Hall Effect in Doped Semiconductor Structures

NASA Astrophysics Data System (ADS)

Tse, Wang-Kong; Das Sarma, Sankar

2006-03-01

We present a microscopic theory of the extrinsic spin Hall effect based on the diagrammatic perturbation theory. Side-jump (SJ) and skew-scattering (SS) contributions are explicitly taken into account to calculate the spin Hall conductivity, and we show their effects scale as σxy^SJ/σxy^SS ˜(/τ)/ɛF, where τ being the transport relaxation time. Motivated by recent experimental work we apply our theory to n-doped and p-doped 3D and 2D GaAs structures, obtaining analytical formulas for the SJ and SS contributions. Moreover, the ratio of the spin Hall conductivity to longitudinal conductivity is found as σs/σc˜10-3-10-4, in reasonable agreement with the recent experimental results of Kato et al. [Science 306, 1910 (2004)] in n-doped 3D GaAs system.

Anomalous Hall Resistance in Bilayer Electron Systems

NASA Astrophysics Data System (ADS)

Ezawa, Z. F.; Suzuki, S.; Tsitsishvili, G.

2007-04-01

Interlayer phase coherence has revealed various novel features in bilayer quantum Hall (QH) systems. It is shown to make the QH resistance vanish instead of developing a Hall plateau in a bilayer counterflow geometry. It also induces another anomalous QH resistance discovered in a drag experiment. These theoretical results explain recent experimental data due to Kellogg et al. [PRL 93 (2004) 036801;PRL 88 (2002) 126804] and Tutuc et al.[PRL 93 (2004) 036802].

Interior detail of dispatch boards in main hall, facing west ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Interior detail of dispatch boards in main hall, facing west - International Longshoremen's & Warehousemen's Union Hall, Naval Civil Engineering Laboratory, Port Hueneme Road, Port Hueneme, Ventura County, CA

An evaluation of krypton propellant in Hall thrusters

NASA Astrophysics Data System (ADS)

Linnell, Jesse Allen

Due to its high specific impulse and low price, krypton has long sparked interest as an alternate Hall thruster propellant. Unfortunately at the moment, krypton's relatively poor performance precludes it as a legitimate option. This thesis presents a detailed investigation into krypton operation in Hall thrusters. These findings suggest that the performance gap can be decreased to 4% and krypton can finally become a realistic propellant option. Although krypton has demonstrated superior specific impulse, the xenon-krypton absolute efficiency gap ranges between 2 and 15%. A phenomenological performance model indicates that the main contributors to the efficiency gap are propellant utilization and beam divergence. Propellant utilization and beam divergence have relative efficiency deficits of 5 and 8%, respectively. A detailed characterization of internal phenomena is conducted to better understand the xenon-krypton efficiency gap. Krypton's large beam divergence is found to be related to a defocusing equipotential structure and a weaker magnetic field topology. Ionization processes are shown to be linked to the Hall current, the magnetic mirror topology, and the perpendicular gradient of the magnetic field. Several thruster design and operational suggestions are made to optimize krypton efficiency. Krypton performance is optimized for discharge voltages above 500 V and flow rates corresponding to an a greater than 0.015 mg/(mm-s), where alpha is a function of flow rate and discharge channel dimensions (alpha = m˙alphab/Ach). Performance can be further improved by increasing channel length or decreasing channel width for a given flow rate. Also, several magnetic field design suggestions are made to enhance ionization and beam focusing. Several findings are presented that improve the understanding of general Hall thruster physics. Excellent agreement is shown between equipotential lines and magnetic field lines. The trim coil is shown to enhance beam focusing

View of north front and west sides of hall, facing ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

View of north front and west sides of hall, facing south - International Longshoremen's & Warehousemen's Union Hall, Naval Civil Engineering Laboratory, Port Hueneme Road, Port Hueneme, Ventura County, CA

Mixed-state Hall effect of high-T(c) superconductors

NASA Astrophysics Data System (ADS)

Kang, Byeongwon

In this dissertation, we presented the study on the mixed-state Hall effect of high-Tc superconductors (HTSs). In order to understand the mechanisms of the puzzling phenomena in the mixed-state Hall effect of HTSs, the Hall sign anomaly and scaling behavior, Hall measurements are conducted in several HTS thin films. We investigate the mechanism of the sign reversal of the Hall resistivity in Tl-2201 films when the electronic band structure is varied through the underdoped, optimally doped, and overdoped regions. It is found that the Hall sign reversals are an intrinsic property of HTSs and determined by electronic band structure. Although pinning is not found to be the mechanism behind sign reversals, pinning can suppress the appearance of the Hall sign reversal. Therefore, it is concluded that two (or more) sign reversals are a generic behavior of HTSs. From a systematic study of the vortex phase diagram, we discover several new features of the vortex liquid. In the presence of pinning, the vortex-liquid phase can be divided into two regions, a glassy liquid (GL) where vortices remain correlated as manifested in non-Ohmic resistivity, and a regular liquid (RL) where resistivity becomes Ohmic as vortices become uncorrelated. The field dependence of the Hall angle is found to be linear in the RL and nonlinear in the GL. Generally the decoupling line (Hk- T), which is defined as a boundary between the GL and the RL, is lower than the depinning line (Hd-T). As pinning increases the Hk-T may approach the Hd-T, thus vortices are decoupled and depinned nearly simultaneously. For a weak pinning system, on the other hand, the Hk-T and the Hd-T are well separated so that single vortices remain pinned in the region Hk ≤ H ≥ Hd. The behavior of s xy is also investigated in the GL and the RL. In the GL s xy is observed to strongly depend on pinning due to the inter-vortex correlation whereas in the RL s xy is independent of pinning since the pinning effect is scaled out.

Probing the thermal Hall effect using miniature capacitive strontium titanate thermometry

DOE Office of Scientific and Technical Information (OSTI.GOV)

Tinsman, Colin; Li, Gang; Asaba, Tomoya

2016-06-27

The thermal Hall effect is the thermal analog of the electrical Hall effect. Rarely observed in normal metals, thermal Hall signals have been argued to be a key property for a number of strongly correlated materials, such as high temperature superconductors, correlated topological insulators, and quantum magnets. The observation of the thermal Hall effect requires precise measurement of temperature in intense magnetic fields. Particularly at low temperature, resistive thermometers have a strong dependence on field, which makes them unsuitable for this purpose. We have created capacitive thermometers which instead measure the dielectric constant of strontium titanate (SrTiO{sub 3}). SrTiO{sub 3}more » approaches a ferroelectric transition, causing its dielectric constant to increase by a few orders of magnitude at low temperature. As a result, these thermometers are very sensitive at low temperature while having very little dependence on the applied magnetic field, making them ideal for thermal Hall measurements. We demonstrate this method by making measurements of the thermal Hall effect in Bismuth in magnetic fields of up to 10 T.« less

Accelerating 3D Hall MHD Magnetosphere Simulations with Graphics Processing Units

NASA Astrophysics Data System (ADS)

Bard, C.; Dorelli, J.

2017-12-01

The resolution required to simulate planetary magnetospheres with Hall magnetohydrodynamics result in program sizes approaching several hundred million grid cells. These would take years to run on a single computational core and require hundreds or thousands of computational cores to complete in a reasonable time. However, this requires access to the largest supercomputers. Graphics processing units (GPUs) provide a viable alternative: one GPU can do the work of roughly 100 cores, bringing Hall MHD simulations of Ganymede within reach of modest GPU clusters ( 8 GPUs). We report our progress in developing a GPU-accelerated, three-dimensional Hall magnetohydrodynamic code and present Hall MHD simulation results for both Ganymede (run on 8 GPUs) and Mercury (56 GPUs). We benchmark our Ganymede simulation with previous results for the Galileo G8 flyby, namely that adding the Hall term to ideal MHD simulations changes the global convection pattern within the magnetosphere. Additionally, we present new results for the G1 flyby as well as initial results from Hall MHD simulations of Mercury and compare them with the corresponding ideal MHD runs.

Magnetic field deformation due to electron drift in a Hall thruster

NASA Astrophysics Data System (ADS)

Liang, Han; Yongjie, Ding; Xu, Zhang; Liqiu, Wei; Daren, Yu

2017-01-01

The strength and shape of the magnetic field are the core factors in the design of the Hall thruster. However, Hall current can affect the distribution of static magnetic field. In this paper, the Particle-In-Cell (PIC) method is used to obtain the distribution of Hall current in the discharge channel. The Hall current is separated into a direct and an alternating part to calculate the induced magnetic field using Finite Element Method Magnetics (FEMM). The results show that the direct Hall current decreases the magnetic field strength in the acceleration region and also changes the shape of the magnetic field. The maximum reduction in radial magnetic field strength in the exit plane is 10.8 G for an anode flow rate of 15 mg/s and the maximum angle change of the magnetic field line is close to 3° in the acceleration region. The alternating Hall current induces an oscillating magnetic field in the whole discharge channel. The actual magnetic deformation is shown to contain these two parts.

Timber Creek bunkhouse and mess hall, Rocky Mountain National Park. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Timber Creek bunkhouse and mess hall, Rocky Mountain National Park. Interior, kitchen and dining area, viewing north. - Timber Creek Bunkhouse & Mess Hall, Trail Ridge Road, Grand Lake, Grand County, CO

Developments in Scanning Hall Probe Microscopy

NASA Astrophysics Data System (ADS)

Chouinard, Taras; Chu, Ricky; David, Nigel; Broun, David

2009-05-01

Low temperature scanning Hall probe microscopy is a sensitive means of imaging magnetic structures with high spatial resolution and magnetic flux sensitivity approaching that of a Superconducting Quantum Interference Device. We have developed a scanning Hall probe microscope with novel features, including highly reliable coarse positioning, in situ optimization of sensor-sample alignment and capacitive transducers for linear, long range positioning measurement. This has been motivated by the need to reposition accurately above fabricated nanostructures such as small superconducting rings. Details of the design and performance will be presented as well as recent progress towards time-resolved measurements with sub nanosecond resolution.

Hall effect spintronics for gas detection

NASA Astrophysics Data System (ADS)

Gerber, A.; Kopnov, G.; Karpovski, M.

2017-10-01

We present the concept of magnetic gas detection by the extraordinary Hall effect. The technique is compatible with the existing conductometric gas detection technologies and allows the simultaneous measurement of two independent parameters: resistivity and magnetization affected by the target gas. Feasibility of the approach is demonstrated by detecting low concentration hydrogen using thin CoPd films as the sensor material. The Hall effect sensitivity of the optimized samples exceeds 240% per 104 ppm at hydrogen concentrations below 0.5% in the hydrogen/nitrogen atmosphere, which is more than two orders of magnitude higher than the sensitivity of the conductance detection.

High-performance LED luminaire for sports hall

NASA Astrophysics Data System (ADS)

Lee, Xuan-Hao; Yang, Jin-Tsung; Chien, Wei-Ting; Chang, Jung-Hsuan; Lo, Yi-Chien; Lin, Che-Chu; Sun, Ching-Cherng

2015-09-01

In this paper, we present a luminaire design with anti-glare and energy-saving effects for sports hall. Compared with traditional lamps using in a badminton court, the average illuminance on the ground of the proposed LED luminaire is enhanced about 300%. Besides, the uniformity is obviously enhanced and improved. The switch-on speed of lighting in sports hall is greatly reduced from 5-10 minutes to 1 second. The simulation analysis and the corresponding experiment results are demonstrated.

Kids in the Hall.

ERIC Educational Resources Information Center

Swanquist, Barry

2000-01-01

Discusses resident hall furniture design that meets student needs as well as the needs of administrators and parents. Furniture design issues examined include the higher expectations of students in their living environment, the need for greater flexibility in space utilization, and adaptability to technology. (GR)

What do you measure when you measure the Hall effect?

NASA Astrophysics Data System (ADS)

Koon, D. W.; Knickerbocker, C. J.

1993-02-01

A formalism for calculating the sensitivity of Hall measurements to local inhomogeneities of the sample material or the magnetic field is developed. This Hall weighting function g(x,y) is calculated for various placements of current and voltage probes on square and circular laminar samples. Unlike the resistivity weighting function, it is nonnegative throughout the entire sample, provided all probes lie at the edge of the sample. Singularities arise in the Hall weighting function near the current and voltage probes except in the case where these probes are located at the corners of a square. Implications of the results for cross, clover, and bridge samples, and the implications of our results for metal-insulator transition and quantum Hall studies are discussed.

Detail of main hall porch on east elevation; camera facing ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Detail of main hall porch on east elevation; camera facing west. - Mare Island Naval Shipyard, Wilderman Hall, Johnson Lane, north side adjacent to (south of) Hospital Complex, Vallejo, Solano County, CA

Interior detail of platform in main hall, with desk, flag, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Interior detail of platform in main hall, with desk, flag, and banners, facing south - International Longshoremen's & Warehousemen's Union Hall, Naval Civil Engineering Laboratory, Port Hueneme Road, Port Hueneme, Ventura County, CA

Useful Pedagogical Applications of the Classical Hall Effect

ERIC Educational Resources Information Center

Houari, Ahmed

2007-01-01

One of the most known phenomena in physics is the Hall effect. This is mainly due to its simplicity and to the wide range of its theoretical and practical applications. To complete the pedagogical utility of the Hall effect in physics teaching, I will apply it here to determine the Faraday constant as a fundamental physical number and the number…

Nonequilibrium Fractional Hall Response After a Topological Quench

NASA Astrophysics Data System (ADS)

Unal, Nur; Mueller, Erich; Oktel, M. O.

When a system is suddenly driven between two topologically different phases, aspects of the original topology survive the quench, but most physical observables (edge currents, Hall conductivity) appear to be non-universal. I will present the non-equilibrium Hall response of a Chern insulator following a quench where the mass term of a single Dirac cone changes sign. In the limit where the physics is dominated by a single Dirac cone, we theoretically find that the Hall conductivity universally changes by two-thirds of the quantum of conductivity. I will analyze this universal behavior by considering the Haldane model, and discuss experimental aspects for its observation in cold atoms. This work is supported by TUBITAK, NSFPHY-1508300, ARO-MURI W9111NF-14-1-0003.

Rule-based fault diagnosis of hall sensors and fault-tolerant control of PMSM

NASA Astrophysics Data System (ADS)

Song, Ziyou; Li, Jianqiu; Ouyang, Minggao; Gu, Jing; Feng, Xuning; Lu, Dongbin

2013-07-01

Hall sensor is widely used for estimating rotor phase of permanent magnet synchronous motor(PMSM). And rotor position is an essential parameter of PMSM control algorithm, hence it is very dangerous if Hall senor faults occur. But there is scarcely any research focusing on fault diagnosis and fault-tolerant control of Hall sensor used in PMSM. From this standpoint, the Hall sensor faults which may occur during the PMSM operating are theoretically analyzed. According to the analysis results, the fault diagnosis algorithm of Hall sensor, which is based on three rules, is proposed to classify the fault phenomena accurately. The rotor phase estimation algorithms, based on one or two Hall sensor(s), are initialized to engender the fault-tolerant control algorithm. The fault diagnosis algorithm can detect 60 Hall fault phenomena in total as well as all detections can be fulfilled in 1/138 rotor rotation period. The fault-tolerant control algorithm can achieve a smooth torque production which means the same control effect as normal control mode (with three Hall sensors). Finally, the PMSM bench test verifies the accuracy and rapidity of fault diagnosis and fault-tolerant control strategies. The fault diagnosis algorithm can detect all Hall sensor faults promptly and fault-tolerant control algorithm allows the PMSM to face failure conditions of one or two Hall sensor(s). In addition, the transitions between health-control and fault-tolerant control conditions are smooth without any additional noise and harshness. Proposed algorithms can deal with the Hall sensor faults of PMSM in real applications, and can be provided to realize the fault diagnosis and fault-tolerant control of PMSM.

Interior of Mess Hall, showing original columns and quarry tile ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Interior of Mess Hall, showing original columns and quarry tile floor - U.S. Naval Base, Pearl Harbor, Barracks & Mess Hall, Hornet Avenue between Liscome Bay & Enterprise Streets, Pearl City, Honolulu County, HI

Contextual view of ILWU Hall, facing northwest with commercial port ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Contextual view of ILWU Hall, facing northwest with commercial port buildings visible in the background - International Longshoremen's & Warehousemen's Union Hall, Naval Civil Engineering Laboratory, Port Hueneme Road, Port Hueneme, Ventura County, CA

Contextual view of ILWU Hall, facing southsouthwest, with ocean bank ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Contextual view of ILWU Hall, facing south-southwest, with ocean bank visible in the background - International Longshoremen's & Warehousemen's Union Hall, Naval Civil Engineering Laboratory, Port Hueneme Road, Port Hueneme, Ventura County, CA

Nonlinear dynamics induced anomalous Hall effect in topological insulators

PubMed Central

Wang, Guanglei; Xu, Hongya; Lai, Ying-Cheng

2016-01-01

We uncover an alternative mechanism for anomalous Hall effect. In particular, we investigate the magnetisation dynamics of an insulating ferromagnet (FM) deposited on the surface of a three-dimensional topological insulator (TI), subject to an external voltage. The spin-polarised current on the TI surface induces a spin-transfer torque on the magnetisation of the top FM while its dynamics can change the transmission probability of the surface electrons through the exchange coupling and hence the current. We find a host of nonlinear dynamical behaviors including multistability, chaos, and phase synchronisation. Strikingly, a dynamics mediated Hall-like current can arise, which exhibits a nontrivial dependence on the channel conductance. We develop a physical understanding of the mechanism that leads to the anomalous Hall effect. The nonlinear dynamical origin of the effect stipulates that a rich variety of final states exist, implying that the associated Hall current can be controlled to yield desirable behaviors. The phenomenon can find applications in Dirac-material based spintronics. PMID:26819223

Nonlinear dynamics induced anomalous Hall effect in topological insulators.

PubMed

Wang, Guanglei; Xu, Hongya; Lai, Ying-Cheng

2016-01-28

We uncover an alternative mechanism for anomalous Hall effect. In particular, we investigate the magnetisation dynamics of an insulating ferromagnet (FM) deposited on the surface of a three-dimensional topological insulator (TI), subject to an external voltage. The spin-polarised current on the TI surface induces a spin-transfer torque on the magnetisation of the top FM while its dynamics can change the transmission probability of the surface electrons through the exchange coupling and hence the current. We find a host of nonlinear dynamical behaviors including multistability, chaos, and phase synchronisation. Strikingly, a dynamics mediated Hall-like current can arise, which exhibits a nontrivial dependence on the channel conductance. We develop a physical understanding of the mechanism that leads to the anomalous Hall effect. The nonlinear dynamical origin of the effect stipulates that a rich variety of final states exist, implying that the associated Hall current can be controlled to yield desirable behaviors. The phenomenon can find applications in Dirac-material based spintronics.

NASA HERMeS Hall Thruster Electrical Configuration Characterization

NASA Technical Reports Server (NTRS)

Peterson, Peter; Kamhawi, Hani; Huang, Wensheng; Yim, John; Herman, Daniel; Williams, George; Gilland, James; Hofer, Richard

2016-01-01

NASAs Hall Effect Rocket with Magnetic Shielding (HERMeS) 12.5 kW Technology Demonstration Unit-1 (TDU-1) Hall thruster has been the subject of extensive technology maturation in preparation for development into a flight ready propulsion system. Part of the technology maturation was to test the TDU-1 thruster in several ground based electrical configurations to assess the thruster robustness and suitability to successful in-space operation. The ground based electrical configuration testing has recently been demonstrated as an important step in understanding and assessing how a Hall thruster may operate differently in space compared to ground based testing, and to determine the best configuration to conduct development and qualification testing. This presentation will cover the electrical configuration testing of the TDU-1 HERMeS Hall thruster in NASA Glenn Research Centers Vacuum Facility 5. The three electrical configurations examined are the thruster body tied to facility ground, thruster floating, and finally the thruster body electrically tied to cathode common. The TDU-1 HERMeS was configured with two different exit plane boundary conditions, dielectric and conducting, to examine the influence on the electrical configuration characterization.

Inverse spin Hall effect by spin injection

NASA Astrophysics Data System (ADS)

Liu, S. Y.; Horing, Norman J. M.; Lei, X. L.

2007-09-01

Motivated by a recent experiment [S. O. Valenzuela and M. Tinkham, Nature (London) 442, 176 (2006)], the authors present a quantitative microscopic theory to investigate the inverse spin-Hall effect with spin injection into aluminum considering both intrinsic and extrinsic spin-orbit couplings using the orthogonalized-plane-wave method. Their theoretical results are in good agreement with the experimental data. It is also clear that the magnitude of the anomalous Hall resistivity is mainly due to contributions from extrinsic skew scattering.

Contextual view of ILWU Hall, facing east, with the city ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Contextual view of ILWU Hall, facing east, with the city of Port Hueneme visible in the background - International Longshoremen's & Warehousemen's Union Hall, Naval Civil Engineering Laboratory, Port Hueneme Road, Port Hueneme, Ventura County, CA

G. Stanley Hall and The Journal of Genetic Psychology: A Note.

PubMed

Hogan, John D

2016-01-01

The Journal of Genetic Psychology (originally called The Pedagogical Seminary) has a complicated history. Known primarily as a journal of development psychology, it was originally intended to be a journal of higher education. In addition, G. Stanley Hall created it, at least in part, to curry favor with Jonas Clark, the benefactor of Clark University. The journal had a cumbersome start, with irregular issues for most of its first decade. Hall was a hands-on editor, often contributing articles and reviews as well as the texts of many of his speeches. A substantial number of additional articles were written by Clark University faculty and fellows where Hall was president. After Hall.s death, the editor became Carl Murchison who eventually left Clark University with the journal and continued to publish it privately until his death. Through the years, the journal has been the source for many classic articles in developmental psychology.

Enhanced spin Hall ratios by Al and Hf impurities in Pt thin films

NASA Astrophysics Data System (ADS)

Nguyen, Minh-Hai; Zhao, Mengnan; Ralph, Daniel C.; Buhrman, Robert A.

The spin Hall effect (SHE) in Pt has been reported to be strong and hence promising for spintronic applications. In the intrinsic SHE mechanism, which has been shown to be dominant in Pt, the spin Hall conductivity σSH is constant, dependent only on the band structure of the spin Hall material. The spin Hall ratio θSH =σSH . ρ , on the other hand, should be proportional to the electrical resistivity ρ of the spin Hall layer. This suggests the possibility of enhancing the spin Hall ratio by introducing additional diffusive scattering to increase the electrical resistivity of the spin Hall layer. Our previous work has shown that this could be done by increasing the surface scattering by growing thinner Pt films in contact with higher resistivity materials such as Ta. In this talk, we discuss another approach: to introduce impurities of metals with negligible spin orbit torque into the Pt film. Our PtAl and PtHf alloy samples exhibit strong enhancement of the spin Hall torque efficiency with impurity concentration due to increased electrical resistivity. Supported in part by Samsung Electronics.

Very-Near-Field Plume Model of a Hall Thruster

DTIC Science & Technology

2003-07-20

UNCLASSIFIED Defense Technical Information Center Compilation Part Notice ADP014988 TITLE: Very-Near-Field Plume Model of a Hall Thruster DISTRIBUTION...numbers comprise the compilation report: ADP014936 thru ADP015049 UNCLASSIFIED am 46 Very-Near-Field Plume Model of a Hall Thruster F. Taccogna’, S. LongoŖ

High Life: 17th Annual Residence Hall Construction Report

ERIC Educational Resources Information Center

Agron, Joe

2006-01-01

Residence hall construction continues to be a priority for colleges and universities. With enrollments on the upswing, higher-education institutions are spending more and building larger facilities to entice students to live on campus. This article presents the findings of "American School & University's" 17th annual Residence Hall Construction…

Tunable-φ Josephson junction with a quantum anomalous Hall insulator

NASA Astrophysics Data System (ADS)

Sakurai, Keimei; Ikegaya, Satoshi; Asano, Yasuhiro

2017-12-01

We theoretically study the Josephson current in a superconductor/quantum anomalous Hall insulator/superconductor junction by using the lattice Green function technique. When an in-plane external Zeeman field is applied to the quantum anomalous Hall insulator, the Josephson current J flows without a phase difference across the junction θ . The phase shift φ appearing in the current-phase relationship J ∝sin(θ -φ ) is proportional to the amplitude of Zeeman fields and depends on the direction of Zeeman fields. A phenomenological analysis of the Andreev reflection processes explains the physical origin of φ . In a quantum anomalous Hall insulator, time-reversal symmetry and mirror-reflection symmetry are broken simultaneously. However, magnetic mirror-reflection symmetry is preserved. Such characteristic symmetry properties enable us to have a tunable φ junction with a quantum Hall insulator.

Hall-effect Thruster Channel Surface Properties Investigation (PREPRINT)

DTIC Science & Technology

2011-03-03

Article 3. DATES COVERED (From - To) 4. TITLE AND SUBTITLE 5a. CONTRACT NUMBER Hall-effect Thruster Channel Surface Properties Investigation 5b...13. SUPPLEMENTARY NOTES For publication in the AIAA Journal of Propulsion and Power. 14. ABSTRACT Surface properties of Hall-effect thruster...incorporated into thruster simulations, and these models must account for evolution of channel surface properties due to thruster operation. Results from

The Hall Effect in Hydrided Rare Earth Films

NASA Astrophysics Data System (ADS)

Koon, D. W.; Azofeifa, D. E.; Clark, N.

We describe two new techniques for measuring the Hall effect in capped rare earth films during hydriding. In one, we simultaneously measure resistivity and the Hall coefficient for a rare earth film covered with four different thicknesses of Pd, recovering the charge transport quantities for both materials. In the second technique, we replace Pd with Mn as the covering layer. We will present results from both techniques.

71. FIRST FLOOR, ROOM 101, ENTRANCE HALL (SIDE WITH FIRE ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

71. FIRST FLOOR, ROOM 101, ENTRANCE HALL (SIDE WITH FIRE DETECTOR), ARCHWAY TO STAIR HALL 100, LOOKING UP, DETAIL OF ARCHWAY SOFFIT. - Octagon House, 1799 (1741) New York Avenue, Northwest, Washington, District of Columbia, DC

Electron Transport in Hall Thrusters

NASA Astrophysics Data System (ADS)

McDonald, Michael Sean

Despite high technological maturity and a long flight heritage, computer models of Hall thrusters remain dependent on empirical inputs and a large part of thruster development to date has been heavily experimental in nature. This empirical approach will become increasingly unsustainable as new high-power thrusters tax existing ground test facilities and more exotic thruster designs stretch and strain the boundaries of existing design experience. The fundamental obstacle preventing predictive modeling of Hall thruster plasma properties and channel erosion is the lack of a first-principles description of electron transport across the strong magnetic fields between the cathode and anode. In spite of an abundance of proposed transport mechanisms, accurate assessments of the magnitude of electron current due to any one mechanism are scarce, and comparative studies of their relative influence on a single thruster platform simply do not exist. Lacking a clear idea of what mechanism(s) are primarily responsible for transport, it is understandably difficult for the electric propulsion scientist to focus his or her theoretical and computational tools on the right targets. This work presents a primarily experimental investigation of collisional and turbulent Hall thruster electron transport mechanisms. High-speed imaging of the thruster discharge channel at tens of thousands of frames per second reveals omnipresent rotating regions of elevated light emission, identified with a rotating spoke instability. This turbulent instability has been shown through construction of an azimuthally segmented anode to drive significant cross-field electron current in the discharge channel, and suggestive evidence points to its spatial extent into the thruster near-field plume as well. Electron trajectory simulations in experimentally measured thruster electromagnetic fields indicate that binary collisional transport mechanisms are not significant in the thruster plume, and experiments

Universal DC Hall conductivity of Jain's state ν = N/2N +/- 1

NASA Astrophysics Data System (ADS)

Nguyen, Dung; Son, Dam

We present the Fermi-liquid theory of the fractional quantum Hall effect to describe Jain's states with filling fraction ν =N/2 N +/- 1 , that are near half filling. We derive the DC Hall conductivity σH (t) in closed form within the validity of our model. The results show that, without long range interaction, DC Hall conductivity has the universal form which doesn't depend on the detail of short range Landau's parameters Fn. When long range interaction is included, DC Hall conductivity depends on both long range interaction and Landau's parameters. We also analyze the relation between DC Hall conductivity and static structure factor. This work was supported by the Chicago MRSEC, which is funded by NSF through Grant DMR-1420709.

Kelvin-Helmholtz versus Hall magnetoshear instability in astrophysical flows.

PubMed

Gómez, Daniel O; Bejarano, Cecilia; Mininni, Pablo D

2014-05-01

We study the stability of shear flows in a fully ionized plasma. Kelvin-Helmholtz is a well-known macroscopic and ideal shear-driven instability. In sufficiently low-density plasmas, also the microscopic Hall magnetoshear instability can take place. We performed three-dimensional simulations of the Hall-magnetohydrodynamic equations where these two instabilities are present, and carried out a comparative study. We find that when the shear flow is so intense that its vorticity surpasses the ion-cyclotron frequency of the plasma, the Hall magnetoshear instability is not only non-negligible, but it actually displays growth rates larger than those of the Kelvin-Helmholtz instability.

68. TURBINE HALL, LOOKING DOWN FROM THE CONTROL ROOM INTO ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

68. TURBINE HALL, LOOKING DOWN FROM THE CONTROL ROOM INTO TURBINE HALL AT UNITS 3, 5, AND 2) - Delaware County Electric Company, Chester Station, Delaware River at South end of Ward Street, Chester, Delaware County, PA

Residence Hall Discipline as a Function of Personality Type.

ERIC Educational Resources Information Center

Williams, W. C.; Nelson, Susan Innmon

1986-01-01

Administered personality measures to residence hall personnel (N=48) to test assertive, nonassertive, or hostile responses to describe residence hall disciplinary situations. Found that not all personnel were well suited to college student disciplining and that the personality tests could be used to identify individuals who may be best suited for…

Implementing Proactive Network Management Solutions in the Residence Halls

ERIC Educational Resources Information Center

Bedi, Param

2005-01-01

This paper discusses how to implement networking solutions in residence halls at Arcadia University in Philadelphia. Sections of the paper include: (1) About Arcadia University; (2) Residence Halls Network; (3) How Campus Manager Helped Arcadia University; (4) What Is Campus Manager; (5) How Campus Manager Works; (6) Campus Manager Remediation…

An End-to-End Model of a Hall Thruster

DTIC Science & Technology

2000-09-01

and deposition of sputtered material, simulation of the operator of a Hall Thruster in a vacuum tank and the extension to the near-plume of a...sophisticated Hall thruster transient hybrid PlC model which had been previously used only to describe the internal flow. The first two items have been

The ``cinquefoil" resistive/Hall measurement geometry

NASA Astrophysics Data System (ADS)

Koon, Daniel W.

2000-03-01

This talk begins by analyzing the charge transport weighting functions -- the sensitivity of resistive and Hall measurements to local macroscopic inhomogeneities -- of bridge-shaped transport specimens. As expected, such measurements sample only that region of the specimen between the central voltage electrodes, in the limit of narrow current channels connected by even narrower arms to the voltage electrodes. The bridge geometry has a few advantages over the van der Pauw cloverleaf geometry -- including ease in zeroing out the null-field Hall voltage -- but also some disadvantages. The talk concludes with an analysis of a hybrid geometry, the “cinquefoil” or five-leafed clover, which combines the best features of both.

High Performance Power Module for Hall Effect Thrusters

NASA Technical Reports Server (NTRS)

Pinero, Luis R.; Peterson, Peter Y.; Bowers, Glen E.

2002-01-01

Previous efforts to develop power electronics for Hall thruster systems have targeted the 1 to 5 kW power range and an output voltage of approximately 300 V. New Hall thrusters are being developed for higher power, higher specific impulse, and multi-mode operation. These thrusters require up to 50 kW of power and a discharge voltage in excess of 600 V. Modular power supplies can process more power with higher efficiency at the expense of complexity. A 1 kW discharge power module was designed, built and integrated with a Hall thruster. The breadboard module has a power conversion efficiency in excess of 96 percent and weighs only 0.765 kg. This module will be used to develop a kW, multi-kW, and high voltage power processors.

Interior view, groundfloor dining hall extending across the rotunda extension ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Interior view, ground-floor dining hall extending across the rotunda extension from it's northern exterior wall to its southern exterior wall, from the north. - U. S. Naval Asylum, Biddle Hall, Gray's Ferry Avenue, Philadelphia, Philadelphia County, PA

Suitable reverberation times for halls for rock and pop music.

PubMed

Adelman-Larsen, Niels Werner; Thompson, Eric R; Gade, Anders C

2010-01-01

The existing body of literature regarding the acoustic design of concert halls has focused almost exclusively on classical music, although there are many more performances of popular music, including rock and pop. Objective measurements were made of the acoustics of 20 rock music venues in Denmark and a questionnaire was used in a subjective assessment of those venues with professional rock musicians and sound engineers as expert listeners. Correlations between the measurements show that clarity, including bass frequencies down to 63 Hz, is important for the general impression of the acoustics of the hall. The best-rated halls in the study have reverberation times that are approximately frequency independent from 0.6 to 1.2 s for hall volumes from 1000 to 6000 m(3). The worst rated halls in the study had significantly higher reverberation times in the 63 and 125 Hz bands. Since most audiences at rock concerts are standing, absorption coefficients were measured with a standing audience from 63 Hz to 4 kHz. These measurements showed that a standing audience absorbs about five times as much energy in mid-/high-frequency bands as in low-frequency bands.

Coupling intensity between discharge and magnetic circuit in Hall thrusters

NASA Astrophysics Data System (ADS)

Wei, Liqiu; Yang, Xinyong; Ding, Yongjie; Yu, Daren; Zhang, Chaohai

2017-03-01

Coupling oscillation is a newly discovered plasma oscillation mode that utilizes the coupling between the discharge circuit and magnetic circuit, whose oscillation frequency spectrum ranges from several kilohertz to megahertz. The coupling coefficient parameter represents the intensity of coupling between the discharge and magnetic circuits. According to previous studies, the coupling coefficient is related to the material and the cross-sectional area of the magnetic coils, and the magnetic circuit of the Hall thruster. However, in our recent study on coupling oscillations, it was found that the Hall current equivalent position and radius have important effects on the coupling intensity between the discharge and magnetic circuits. This causes a difference in the coupling coefficient for different operating conditions of Hall thrusters. Through non-intrusive methods for measuring the Hall current equivalent radius and the axial position, it is found that with an increase in the discharge voltage and magnetic field intensity, the Hall current equivalent radius increases and its axial position moves towards the exit plane. Thus, both the coupling coefficient and the coupling intensity between the discharge and magnetic circuits increase. Contribution to the Topical Issue "Physics of Ion Beam Sources", edited by Holger Kersten and Horst Neumann.

Measuring the Hall weighting function for square and cloverleaf geometries

NASA Astrophysics Data System (ADS)

Scherschligt, Julia K.; Koon, Daniel W.

2000-02-01

We have directly measured the Hall weighting function—the sensitivity of a four-wire Hall measurement to the position of macroscopic inhomogeneities in Hall angle—for both a square shaped and a cloverleaf specimen. Comparison with the measured resistivity weighting function for a square geometry [D. W. Koon and W. K. Chan, Rev. Sci. Instrum. 69, 12 (1998)] proves that the two measurements sample the same specimen differently. For Hall measurements on both a square and a cloverleaf, the function is nonnegative with its maximum in the center and its minimum of zero at the edges of the square. Converting a square into a cloverleaf is shown to dramatically focus the measurement process onto a much smaller portion of the specimen. While our results agree qualitatively with theory, details are washed out, owing to the finite size of the magnetic probe used.

Low-Cost, High-Performance Hall Thruster Support System

NASA Technical Reports Server (NTRS)

Hesterman, Bryce

2015-01-01

Colorado Power Electronics (CPE) has built an innovative modular PPU for Hall thrusters, including discharge, magnet, heater and keeper supplies, and an interface module. This high-performance PPU offers resonant circuit topologies, magnetics design, modularity, and a stable and sustained operation during severe Hall effect thruster current oscillations. Laboratory testing has demonstrated discharge module efficiency of 96 percent, which is considerably higher than current state of the art.

The Hall-induced stability of gravitating fluids

NASA Astrophysics Data System (ADS)

Karmakar, P. K.; Goutam, H. P.

2018-05-01

We analyze the stability behavior of low-density partially ionized self-gravitating magnetized unbounded dusty plasma fluid in the presence of the Hall diffusion effects (HDEs) in the non-ideal magnetohydrodynamic (MHD) equilibrium framework. The effects of inhomogeneous self-gravity are methodically included in the basic model tapestry. Application of the Fourier plane-wave perturbative treatment decouples the structuration representative parameters into a linear generalized dispersion relation (sextic) in a judicious mean-fluid approximation. The dispersion analysis shows that the normal mode, termed as the gravito-magneto-acoustic (GMA) mode, is drastically modified due to the HDEs. This mode is highly dispersive, and driven unstable by the Hall current resulting from the symmetry-breaking of electrons and ions relative to the magnetic field. The mode feature, which is derived from a modified induction with the positive Hall, is against the ideal MHD. It is further demonstrated that the HDEs play stabilizing roles by supporting the cloud against gravitational collapse. Provided that the HDEs are concurrently switched off, the collapse occurs on the global spatial scale due to enhanced inward accretion of the gravitating dust constituents. It is seen explicitly that the enhanced dust-charge leads to stabilizing effects. Besides, the Hall-induced fluctuations, as propagatory wave modes, exhibit both normal and anomalous dispersions. The reliability checkup of the entailed results as diverse corollaries and special cases are illustratively discussed in the panoptic light of the earlier paradigmatic predictions available in the literature.

A Small Modular Laboratory Hall Effect Thruster

NASA Astrophysics Data System (ADS)

Lee, Ty Davis

Electric propulsion technologies promise to revolutionize access to space, opening the door for mission concepts unfeasible by traditional propulsion methods alone. The Hall effect thruster is a relatively high thrust, moderate specific impulse electric propulsion device that belongs to the class of electrostatic thrusters. Hall effect thrusters benefit from an extensive flight history, and offer significant performance and cost advantages when compared to other forms of electric propulsion. Ongoing research on these devices includes the investigation of mechanisms that tend to decrease overall thruster efficiency, as well as the development of new techniques to extend operational lifetimes. This thesis is primarily concerned with the design and construction of a Small Modular Laboratory Hall Effect Thruster (SMLHET), and its operation on argon propellant gas. Particular attention was addressed at low-cost, modular design principles, that would facilitate simple replacement and modification of key thruster parts such as the magnetic circuit and discharge channel. This capability is intended to facilitate future studies of device physics such as anomalous electron transport and magnetic shielding of the channel walls, that have an impact on thruster performance and life. Preliminary results demonstrate SMLHET running on argon in a manner characteristic of Hall effect thrusters, additionally a power balance method was utilized to estimate thruster performance. It is expected that future thruster studies utilizing heavier though more expensive gases like xenon or krypton, will observe increased efficiency and stability.

Throttling Impacts on Hall Thruster Performance, Erosion, and Qualification for NASA Science Missions

NASA Technical Reports Server (NTRS)

Dankanich, John W.; DeHoyos, Amado

2007-01-01

With the SMART-1, Department of Defense, and commercial industry successes in Hall thruster technologies, NASA has started considering Hall thrusters for science missions. The recent Discovery proposals included a Hall thruster science mission and the In-Space Propulsion Project is investing in Hall thruster technologies. As the confidence in Hall thrusters improve, ambitious multi-thruster missions are being considered. Science missions often require large throttling ranges due to the 1/r(sup 2) power drop-off from the sun. Deep throttling of Hall thrusters will impact the overall system performance. Also, Hall thrusters can be throttled with both current and voltage, impacting erosion rates and performance. Last, electric propulsion thruster lifetime qualification has previously been conducted with long duration full power tests. Full power tests may not be appropriate for NASA science missions, and a combination of lifetime testing at various power levels with sufficient analysis is recommended. Analyses of various science missions and throttling schemes using the Aerojet BPT-4000 and NASA 103M HiVHAC thruster are presented.

3D Quantum Hall Effect of Fermi Arc in Topological Semimetals

NASA Astrophysics Data System (ADS)

Wang, C. M.; Sun, Hai-Peng; Lu, Hai-Zhou; Xie, X. C.

2017-09-01

The quantum Hall effect is usually observed in 2D systems. We show that the Fermi arcs can give rise to a distinctive 3D quantum Hall effect in topological semimetals. Because of the topological constraint, the Fermi arc at a single surface has an open Fermi surface, which cannot host the quantum Hall effect. Via a "wormhole" tunneling assisted by the Weyl nodes, the Fermi arcs at opposite surfaces can form a complete Fermi loop and support the quantum Hall effect. The edge states of the Fermi arcs show a unique 3D distribution, giving an example of (d -2 )-dimensional boundary states. This is distinctly different from the surface-state quantum Hall effect from a single surface of topological insulator. As the Fermi energy sweeps through the Weyl nodes, the sheet Hall conductivity evolves from the 1 /B dependence to quantized plateaus at the Weyl nodes. This behavior can be realized by tuning gate voltages in a slab of topological semimetal, such as the TaAs family, Cd3 As2 , or Na3Bi . This work will be instructive not only for searching transport signatures of the Fermi arcs but also for exploring novel electron gases in other topological phases of matter.

12. BUILDING 324, INTERIOR, ENTRY HALL AND STAIRWAY, FROM SOUTH ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

12. BUILDING 324, INTERIOR, ENTRY HALL AND STAIRWAY, FROM SOUTH ENTRY, LOOKING NORTH, WITH HALL LEADING TO GARAGE TO RIGHT OF STAIRWAY. - Oakland Naval Supply Center, Commanding Officers Residences, Between E & F Streets, West of Fourth Street, Oakland, Alameda County, CA