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Sample records for harbor thomas jefferson

  1. Thomas Jefferson's Academical Village

    DEFF Research Database (Denmark)

    Foote, Jonathan; Frohburg, Jan

    2017-01-01

    This is an essay written for the Festschrift of Karl-Heinz Schmitz, Professor at Bauhaus-Universität Weimar. It reflects on some aspects of Thomas Jefferson's design for the University of Virginia in relation to Professor's Schmitz' teachings and interests.......This is an essay written for the Festschrift of Karl-Heinz Schmitz, Professor at Bauhaus-Universität Weimar. It reflects on some aspects of Thomas Jefferson's design for the University of Virginia in relation to Professor's Schmitz' teachings and interests....

  2. Thomas Jefferson and the Purposes of Education.

    Science.gov (United States)

    Jewett, Thomas O.

    1997-01-01

    Thomas Jefferson was the first conspicuous U.S. advocate of free education supported by local taxation and of state aid to higher education. He believed that only an educated citizenry could assume the responsibilities of self-government. (SK)

  3. Status of Thomas Jefferson National Accelerator Facility (Jefferson Lab)

    International Nuclear Information System (INIS)

    H.A. Grunder

    1997-01-01

    When first beam was delivered on target in July 1994, the Continuous Electron Beam Accelerator Facility (CEBAF), in Newport News, Virginia realized the return on years of planning and work to create a laboratory devoted to exploration of matter that interacts through the strong force, which holds the quarks inside the proton and binds protons and neutrons into the nucleus. Dedicated this year as the Thomas Jefferson National Accelerator Facility (Jefferson Lab), the completion of construction and beginning of its experimental program has culminated a process that began more than a decade ago with the convening of the Bromley Panel to look at research possibilities for such an electron accelerator

  4. 78 FR 16208 - Safety Zone; V. I. Carnival Finale; St. Thomas Harbor; St. Thomas, U.S. Virgin Islands

    Science.gov (United States)

    2013-03-14

    ... 1625-AA00 Safety Zone; V. I. Carnival Finale; St. Thomas Harbor; St. Thomas, U.S. Virgin Islands AGENCY... establish a safety zone on the waters of St. Thomas Harbor in St. Thomas, U. S. Virgin Islands during the V... between 9 a.m. and 5 p.m., Monday through Friday, except federal holidays. The telephone number is 202-366...

  5. 78 FR 16211 - Safety Zone, Corp. Event Finale UHC, St. Thomas Harbor; St. Thomas, U.S. Virgin Islands

    Science.gov (United States)

    2013-03-14

    ... 1625-AA00 Safety Zone, Corp. Event Finale UHC, St. Thomas Harbor; St. Thomas, U.S. Virgin Islands... establish a temporary safety zone on the waters of St. Thomas Harbor in St. Thomas, U.S. Virgin Islands... through Friday, except federal holidays. The telephone number is 202-366-9329. See the ``Public...

  6. 78 FR 23489 - Safety Zone; V.I. Carnival Finale, St. Thomas Harbor; St. Thomas, U.S.V.I.

    Science.gov (United States)

    2013-04-19

    ... waters of St. Thomas Harbor in St. Thomas, U.S. Virgin Islands during the V.I. Carnival Finale, a... through Friday, except Federal holidays. FOR FURTHER INFORMATION CONTACT: If you have questions on this... event. The event will be held on the waters of St. Thomas Harbor, St. Thomas, U. S. Virgin Islands...

  7. 78 FR 7663 - SLR; 2013 International Rolex Regatta; St. Thomas Harbor; St. Thomas, U.S. Virgin Islands

    Science.gov (United States)

    2013-02-04

    ... 1625-AA08 SLR; 2013 International Rolex Regatta; St. Thomas Harbor; St. Thomas, U.S. Virgin Islands... special local regulations on the waters of St. Thomas Harbor in St. Thomas, U. S. Virgin Islands during... 5 p.m., Monday through Friday, except federal holidays. The telephone number is 202-366-9329. See...

  8. The Reverend Thomas Jefferson Bowen: An Introductory Background to His Linguistic Works, 1850-1856

    Science.gov (United States)

    Awoniyi, Timothy A.

    1974-01-01

    A historical narrative background for the linguistic works of Thomas Jefferson Bowen, an American missionary who was the first non-Nigerian to publish a grammar of Yoruba (1858). The author points up a need for further scholarly review of Bowen's pioneering work and contribution to Yoruba studies. (JT)

  9. 78 FR 22778 - Safety Zone; Corp. Event Finale UHC, St. Thomas Harbor; St. Thomas, U.S.V.I.

    Science.gov (United States)

    2013-04-17

    ... waters of St. Thomas Harbor in St. Thomas, U.S. Virgin Islands during the Corp. Event Finale UHC, a.... and 5 p.m., Monday through Friday, except Federal holidays. FOR FURTHER INFORMATION CONTACT: If you..., St. Thomas, U. S. Virgin Islands. The fireworks will be launched from a barge stationed near the St...

  10. 78 FR 19632 - Special Local Regulations; St. Thomas Carnival Watersport Activities, Charlotte Amalie Harbor; St...

    Science.gov (United States)

    2013-04-02

    ...-AA08 Special Local Regulations; St. Thomas Carnival Watersport Activities, Charlotte Amalie Harbor; St... proposes to establish a special local regulation on the waters of Charlotte Amalie Harbor in St Thomas, USVI during the St. Thomas Carnival Watersport Activities, a high speed boat race. The event is...

  11. 33 CFR 110.250 - St. Thomas Harbor, Charlotte Amalie, V.I.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false St. Thomas Harbor, Charlotte... SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.250 St. Thomas Harbor, Charlotte Amalie.... Thomas, V.I. of the United States and approaches thereto, including all waters under its jurisdiction, as...

  12. Edward Gantt (1742-1837): US senate chaplain and first White House physician to Thomas Jefferson.

    Science.gov (United States)

    Cavanagh, Harrison Dwight

    2017-08-01

    In his long and eventful life, Edward Gantt (1742-1837) made important contributions to the newly independent American Republic, as well as to the development of scientific evidence-based American medicine. Unfortunately, his achievements have gone unrecognized and unreported in mainstream historical publications. Specifically, his service as the first designated White House doctor, and personal physician to President Thomas Jefferson from 1801 to 1809 has not been reported. The purpose of this paper is to document the biographical and scientific details of his extraordinary life and notable contributions.

  13. Radiation therapy for pineal tumors: 30-year experience at Thomas Jefferson University Hospital

    International Nuclear Information System (INIS)

    Dickerson, G.A.; Tupchong, L.; Moylan, D.J.; Kramer, S.

    1987-01-01

    Eighteen tumors of the pineal region were treated at Thomas Jefferson University Hospital since 1957. Preoperative evaluation included CT scan in 11 patients and cerebrospinal fluid cytology in four. Histologic diagnosis was obtained in nine patients. Diagnosis in two other patients was based on CT scan response at 2,000 cGY. Fifteen patients received whole-brain irradiation with a boost, one each with limited-field and whole-brain irradiation only. One patient with melanoma received craniospinal irradiation. Median pineal dose was 55 Gy; range, 50-60 Gy. Five treatment failures occurred, four local and one distant. Actuarial survival was 80%, 70%, and 65% at 5, 10, and 20 years. Median follow-up was 8.8 years. Cranial radiotherapy alone appears to control the majority of pineal tumors

  14. Hurricane Maria, 2017 Hydrographic Response for Puerto Rico and U.S. Virgin Islands by the NOAA Ship Thomas Jefferson

    Science.gov (United States)

    Gump, D.; Klemm, A.; van Westendorp, C.; Wood, D. A.; Doroba, J.

    2017-12-01

    After many coastal natural disasters, ports and harbors must be surveyed for navigation dangers, cleared, and opened as quickly as possible to facilitate recovery and reconstruction. The appropriate survey asset to use varies by location and condition. Routinely, hydrographic response to a natural disaster is conducted by survey teams with trailer-hitched vessels deployed quickly by land. This was the case for Hurricanes Harvey, Irma and Nate which struck mainland U.S. In the U.S. territories of Puerto Rico and the Virgin Islands post-Hurricane Maria, however, the devastation to the regional infrastructure resulted in a dearth of adequate accommodations, fuel, security and passable roads required to support a land-based response. On September 24th, 2017, NOAA Ship Thomas Jefferson (TJ), a 208-foot-long hydrographic survey vessel with a 38-person complement and two 28-foot-long survey launches, began an uninterrupted 20-day cruise to survey major ports around the islands. The ship's crew acquired high-resolution multibeam echo sounder (MBES) and concurrent object-detection side scan sonar (SSS) in and around 18 individual port facilities in 13 areas. The TJ is the appropriate platform for sustained remote response due to a self-contained infrastructure that supports deployment and recovery of survey launches, as well as 24/7 data processing facilities. The TJ crew produced digital terrain models and SSS mosaics, in addition to developing new reports on specific hazards overnight. These products quickly informed responders, stakeholders and responsible authorities about the efficacy of waterways.

  15. Implementation of the Polarized HD target at the Thomas Jefferson National Accelerator Facility

    International Nuclear Information System (INIS)

    Chaden Djalali; David Tedeschi

    2007-01-01

    The original goal of this proposal was to study frozen spin polarized targets (HD target and other technologies) and produce a conceptual design report for the implementation of such a target in the HALL B detector of the Thomas Jefferson National Accelerator Facility (JLab). During the first two years of the proposal, we came to the conclusion that the best suited target for JLab was a frozen spin target and helped with the design of such a target. We have not only achieved our original goal but have exceeded it by being involved in the actual building and testing of parts the target. The main reason for this success has been the hiring of a senior research associate, Dr. Oleksandr Dzyubak, who had more than 10 years of experience in the field of frozen spin polarized targets. The current grant has allowed the USC nuclear physics group to strengthen its role in the JLab collaboration and make important contribution to both the detector development and the scientific program

  16. Thomas Jefferson, I dilemmi della democrazia americana, translated and edited by Alberto Giordano, with a preface by Dino Cofrancesco (Novi Ligure: Città del Silenzio, 2007

    Directory of Open Access Journals (Sweden)

    Pierluigi Chiassoni

    2010-03-01

    Full Text Available A review of Thomas Jefferson, I dilemmi della democrazia americana, translated and edited by Alberto Giordano, with a preface by Dino Cofrancesco (Novi Ligure: Città del Silenzio, 2007

  17. Two Exceptional Witnesses of Latin American Independence: The Prussian Explorer Alexander Von Humboldt and The Virginian Politician Thomas Jefferson

    Directory of Open Access Journals (Sweden)

    Sandra Rebok

    2014-01-01

    Full Text Available Este artículo analiza las respectivas posturas de Alexander von Humboldt y Thomas Jefferson en relación con la independencia de los territorios hispanoamericanos y el modo en que estas se hallaban condicionadas por sus propias experiencias: Humboldt, como observador de la situación americana justo antes del comienzo de los movimientos independentistas; y Jefferson, como actor importante en la independencia de los EE.UU. y la posterior creación de una nueva sociedad. Asimismo, no se pueden estudiar sus respectivas posiciones hacia los movimientos independentistas en la América española, desvinculadas de sus conclusiones respecto a la Revolución francesa y sus consecuencias. El trabajo muestra de qué manera los dos personajes comentaron estos sucesos en la correspondencia que mantuvieron entre sí. Finalmente, también se evalúan, a través de estos famosos representantes del llamado Nuevo Mundo y el Viejo Mundo, las diferencias y similitudes en la manera de reaccionar ante estos eventos políticos y sociales desde el punto de vista europeo, en comparación con la mirada desde Norteamérica.

  18. Neutron Arm Study and Calibration for the GEn Experiment at Thomas Jefferson National Laboratory

    International Nuclear Information System (INIS)

    Timothy Ngo

    2007-01-01

    The measurement of the neutron electric form factor, GEn, will allow us to solve indirectly for the quark charge distribution inside of the neutron. With the equipment at Jefferson Lab we have measured GEn at four momentum transfer values of Q**2 at 1.3, 2.4 and 3.4 (GeV/c)**2 using a polarized electron beam and polarized Helium target. The scattered electrons off of the Helium target are detected in the BigBite spectrometer and the recoiling neutrons from the Helium are detected in the Neutron Arm, which is composed of an array of scintillators. The main focus of this thesis will be devoted to the geometry, timing and energy calibrations of the Neutron Arm

  19. Dos modos de situarse en el lugar : Monticello de Thomas Jefferson y Taliesin de F. Lloyd Wright

    Directory of Open Access Journals (Sweden)

    Juan Antonio Cortés

    2012-12-01

    Full Text Available

    Resumen

    El artículo consiste en una descripción comparada de dos edificios: Monticello ‐la casa que Thomas Jefferson construyó para sí mismo en Virginia‐ y Taliesin ‐la casa y estudio de Frank Lloyd Wright en Wisconsin‐. El texto estudia en primer lugar las fuentes arquitectónicas y la evolución del proyecto de Monticello, para centrarse después en la explicación de Taliesin. Hay una cierta similitud en el modo en que Monticello y las casas de  Wright ‐en concreto la Ward Willitts‐ se extienden  horizontalmente en el terreno y, volviendo a Taliesin, la tesis  principal del texto es que tanto la residencia de Jefferson como la de Wright se asientan sobre una colina, pero Monticello  ‘corona’ su cima, mientras que Taliesin la bordea, se sitúa como  una ‘ceja’ respecto a la misma. En definitiva, de este  último edificio se puede afirmar que es una ‘casa natural’, que  logra una plena integración entre arquitectura y naturaleza.

    Palabras clave

    casa, proyecto, evolución, corona, natural

    Abstract

    This article consists of a comparative description of two buildings: Monticello, Thomas Jefferson’s residence which he  built for himself in Virginia, and Taliesin, the studio and home of Frank Lloyd Wright in Wisconsin. First, the text studies the  architectural references and evolution of the project for  Monticello, in order to later focus on explaining Taliesin. There is a certain similarity in the way that Monticello and Wright’s  houses (especially the Ward Willits House extend horizontally  across the land. The thesis of this article is that both Jefferson’s and Wright’s residences rest upon a hill, but Monticello crowns  the top while Taliesin borders it like an eyebrow. In conclusion, we can say that Taliesin is a “natural house”, which manages to fully integrate its architecture with nature

  20. The Complexity of Thomas Jefferson. A Response to "'The Diffusion of Light': Jefferson's Philosophy of Education"

    Science.gov (United States)

    Carpenter, James

    2014-01-01

    This response argues that Jefferson's educational philosophy must be considered in a proper historical context. Holowchak accurately demonstrates both Jefferson's obsession with education and the political philosophy on which his educational beliefs are built. However, the effort to apply modern democratic and meritocratic attributes to…

  1. Chemical, physical, profile and other oceanographic data collected aboard NOAA Ship THOMAS JEFFERSON in the Gulf of Mexico from 2010-06-03 to 2010-07-18 in response to the Deepwater Horizon Oil Spill event (NODC Accession 0069082)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Chemical, physical, profile, tows and underway oceanographic data were collected aboard NOAA Ship THOMAS JEFFERSON in the Gulf of Mexico from 2010-06-03 to...

  2. Unknown oceanographic data collected aboard NOAA Ship THOMAS JEFFERSON in the Gulf of Mexico from 2010-05-23 to 2010-05-28 in response to the Deepwater Horizon Oil Spill event (NODC Accession 0084596)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Unknown oceanographic data were collected aboard NOAA Ship THOMAS JEFFERSON in the Gulf of Mexico from 2010-05-23 to 2010-05-28 in response to the Deepwater Horizon...

  3. Chemical, physical and profile oceanographic data collected aboard NOAA Ship THOMAS JEFFERSON in the Gulf of Mexico from 2010-06-15 to 2010-06-28 in response to the Deepwater Horizon Oil Spill event (NODC Accession 0069083)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Chemical, physical and profile oceanographic data were collected aboard NOAA Ship THOMAS JEFFERSON in the Gulf of Mexico from 2010-06-15 to 2010-06-28 in response to...

  4. NRDA-processed CTD data from NOAA Ship THOMAS JEFFERSON in the Gulf of Mexico, Cruise 2 Leg 1, collected from 2010-06-03 to 2010-06-10, associated with the Deepwater Horizon Oil Spill event (NCEI Accession 0128380)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conductivity Temperature and Depth (CTD) measurements were collected aboard NOAA Ship Thomas Jefferson to determine physical oceanographic parameters of the water...

  5. NRDA-processed CTD data from NOAA Ship THOMAS JEFFERSON in the Gulf of Mexico, Cruise 3 Leg 1, collected from 2010-06-06 to 2010-06-26, associated with the Deepwater Horizon Oil Spill event (NCEI Accession 0128381)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conductivity Temperature and Depth (CTD) measurements were collected aboard NOAA Ship Thomas Jefferson to determine physical oceanographic parameters of the water...

  6. Temperature and salinity profiles from CTD casts from NOAA Ship THOMAS JEFFERSON and other PLATFORMS from the North/South Pacific Ocean, North Atlantic Ocean, and other sea areas in support of the Integrated Global Ocean Services System (IGOSS) from 1991-11-01 to 1991-11-30 (NODC Accession 9100243)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CTD and other data were collected from NOAA Ship THOMAS JEFFERSON and other PLATFORMS in support of the Integrated Global Ocean Services System (IGOSS). Data were...

  7. Change in operating parameters of the Continuous Electron Beam Accelerator Facility and Free Electron Laser, Thomas Jefferson National Accelerator Facility, Newport News, Virginia

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-10-01

    In this environmental assessment (EA), the US Department of Energy (DOE) reports the results of an analysis of the potential environmental impacts from a proposed change in operating parameters of the Continuous Electron Beam Accelerator Facility (CEBAF), and operation of the Free Electron Laser (FEL) facility beyond the initial demonstration period. With this proposal, DOE intends to increase CEBAF operating range from its current operating maximum beam energy of 4.0 GeV [giga-(billion) electron volts] to 8.0 GeV at a beam power of no greater than 1,000 kW [1 megawatt (MW)], its maximum attainable level, based on current technology and knowledge, without significant, costly equipment modifications. DOE has prepared an EA for this action to determine the potential for adverse impacts from operation of CEBAF and the FEL at the proposed levels. Changing the operating parameters of CEBAF would require no new major construction and minor modifications to the accelerator, its support systems, the FEL, and onsite utility systems. Modifications and performance improvements would be made to (1) the accelerator housed in the underground tunnels, (2) its support systems located in the above ground service buildings, and (3) the water and equipment cooling systems both in the tunnel and at the ground surface. All work would be performed on previously disturbed land and in, on, or adjacent to existing buildings, structures, and equipment. With the proposed action, the recently constructed FEL facility at the Jefferson Lab would operate in concert with CEBAF beyond its demonstration period and up to its maximum effective electron beam power level of 210 kW. In this EA, DOE evaluates the impacts of the no-action alternative and the proposed action alternative. Alternatives considered, but dismissed from further evaluation, were the use of another accelerator facility and the use of another technology.

  8. Change in operating parameters of the Continuous Electron Beam Accelerator Facility and Free Electron Laser, Thomas Jefferson National Accelerator Facility, Newport News, Virginia

    International Nuclear Information System (INIS)

    1997-10-01

    In this environmental assessment (EA), the US Department of Energy (DOE) reports the results of an analysis of the potential environmental impacts from a proposed change in operating parameters of the Continuous Electron Beam Accelerator Facility (CEBAF), and operation of the Free Electron Laser (FEL) facility beyond the initial demonstration period. With this proposal, DOE intends to increase CEBAF operating range from its current operating maximum beam energy of 4.0 GeV [giga-(billion) electron volts] to 8.0 GeV at a beam power of no greater than 1,000 kW [1 megawatt (MW)], its maximum attainable level, based on current technology and knowledge, without significant, costly equipment modifications. DOE has prepared an EA for this action to determine the potential for adverse impacts from operation of CEBAF and the FEL at the proposed levels. Changing the operating parameters of CEBAF would require no new major construction and minor modifications to the accelerator, its support systems, the FEL, and onsite utility systems. Modifications and performance improvements would be made to (1) the accelerator housed in the underground tunnels, (2) its support systems located in the above ground service buildings, and (3) the water and equipment cooling systems both in the tunnel and at the ground surface. All work would be performed on previously disturbed land and in, on, or adjacent to existing buildings, structures, and equipment. With the proposed action, the recently constructed FEL facility at the Jefferson Lab would operate in concert with CEBAF beyond its demonstration period and up to its maximum effective electron beam power level of 210 kW. In this EA, DOE evaluates the impacts of the no-action alternative and the proposed action alternative. Alternatives considered, but dismissed from further evaluation, were the use of another accelerator facility and the use of another technology

  9. A New Era for Jefferson Lab

    International Nuclear Information System (INIS)

    McKeown, R. D.; Montgomery, H. E.; Pennington, M. R.

    2016-01-01

    On a cool Saturday morning in late April a seemingly endless stream of cars turned off Jefferson Avenue in Newport News, Virginia, bringing 12,000 people ages 1 to 91 to the Open House to learn more about “the new era in science” at the Thomas Jefferson National Accelerator Facility. Here, the visitors were dazzled by the complex equipment, the enthusiastic staff, and the advanced technology at the Laboratory.

  10. Thomas Jefferson, Page Design, and Desktop Publishing.

    Science.gov (United States)

    Hartley, James

    1991-01-01

    Discussion of page design for desktop publishing focuses on the importance of functional issues as opposed to aesthetic issues, and criticizes a previous article that stressed aesthetic issues. Topics discussed include balance, consistency in text structure, and how differences in layout affect the clarity of "The Declaration of…

  11. Underway navigational, physical and time series data collected aboard NOAA Ship Thomas Jefferson in the North Atlantic Ocean from 2013-06-17 to 2013-10-02 (NODC Accession 0123055)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0123055 contains raw underway navigational, physical and time series data logged by the Scientific Computer System (SCS) aboard NOAA Ship Thomas...

  12. Jefferson Lab, a status report

    International Nuclear Information System (INIS)

    Dunham, B.M.

    1996-01-01

    Thomas Jefferson National Accelerator Facility (Jefferson Lab; formerly known as CEBAF), operates a 4 GeV, 200 microA continuous wave (CW) electron accelerator that re-circulates the beam five times through two superconducting 400 MeV linacs. Electrons can be extracted from any of the five recirculation passes and beam can be simultaneously delivered to the three experimental halls. As the commissioning stage nears completion, the accelerator is becoming a fully operational machine. Experiments in Hall C have been underway since November 1995 with beam powers of over 300 kW at various energies. Hall A has received beam for spectrometer commissioning, while Hall B is expected to receive its first beam in the fall of 1996. Accelerator availability of greater than 70% during physics runs and excellent beam quality have contributed to making Jefferson Lab a world class laboratory for accelerator-based electromagnetic nuclear physics. With the high performance of the superconducting RF cavities, machine upgrades to 6 GeV, and eventually 8 to 10 GeV are now in the planning stages. Operational and commissioning details concerning all aspects of the machine will be discussed

  13. Jefferson Lab, a status report

    International Nuclear Information System (INIS)

    Dunham, B.M.

    1996-01-01

    Thomas Jefferson National Accelerator Facility (Jefferson Lab; formerly known as CEBAF), operates a 4 GeV, 200 μA continuous wave (CW) electron accelerator that re-circulates the beam five times through two superconducting 400 MeV linacs. Electrons can be extracted from any of the five recirculation passes and beam can be simultaneously delivered to the three experimental halls. As the commissioning stage nears completion, the accelerator is becoming a fully operational machine. Experiments in Hall C have been underway since November 1995 with beam powers of over 300 kW at various energies. Hall A has received beam for spectrometer commissioning, while Hall B is expected to receive its first beam in the fall of 1996. Accelerator availability of greater than 70% during physics runs and excellent beam quality have contributed to making Jefferson Lab a world class laboratory for accelerator-based electromagnetic nuclear physics. With the high performance of the superconducting RF cavities, machine upgrades to 6 GeV, and eventually 8 to 10 GeV are now in the planning stages. Operational and commissioning details concerning all aspects of the machine will be discussed. (author)

  14. Nuclear power and the Hamilton-Jefferson debate

    International Nuclear Information System (INIS)

    Hacker, A.

    1980-01-01

    The basic sources of nuclear opposition derive from the philosophical arguments of Thomas Jefferson against Alexander Hamilton's vision of an industrial society with a strong central authority. Today's young people continue Jefferson's radical plea for the individual freedoms associated with personal ownership and limited government, but they accept the structure of the former while searching for the romanticism of the latter. The nuclear debate reflects this dichotomy and will continue even if the issues of waste disposal and safety are resolved

  15. ERTS-1 Virgin Islands experiment 589: Determine boundaries of ERTS and aircraft data within which useful water quality information can be obtained. [water pollution in St. Thomas harbor, Virgin Islands

    Science.gov (United States)

    Coulbourn, W. C.; Egan, W. G.; Olsen, D. A. (Principal Investigator); Heaslip, G. B.

    1973-01-01

    The author has identified the following significant results. The boundaries of application of ERTS-1 and aircraft data are established for St. Thomas harbor within which useful water quality information can be obtained. In situ physical, chemical, and biological water quality and benthic data were collected. Moored current meters were employed. Optical measurements of solar irradiance, color test panel radiance and water absorption were taken. Procedures for correlating in situ optical, biological, and chemical data with underflight aircraft I2S data and ERTS-1 MSS scanner data are presented. Comparison of bulk and precision CCT computer printout data for this application is made, and a simple method for geometrically locating bulk data individual pixels based on land-water interface is described. ERTS spacecraft data and I2S aircraft imagery are correlated with optical in situ measurements of the harbor water, with the aircraft green photographic and ERTS-1 MSS-4 bands being the most useful. The biological pigments correlate inversely with the optical data for inshore areas and directly further seaward. Automated computer data processing facilitated analysis.

  16. Thomas Bang

    DEFF Research Database (Denmark)

    Petersen, Anne Ring; Bogh, Mikkel; Troelsen, Anders

    Monografi om kunstneren Thomas Bangs malerier, tegninger, skulpturer og installationer der følger hans virke fra de tidligste malerier fra begyndelsen af 1960erne til de seneste års store skupturinstallationer.......Monografi om kunstneren Thomas Bangs malerier, tegninger, skulpturer og installationer der følger hans virke fra de tidligste malerier fra begyndelsen af 1960erne til de seneste års store skupturinstallationer....

  17. Classical Ethics, Jefferson's Christian Epicureanism, and American Morality.

    Science.gov (United States)

    Lawler, Peter Augustine

    1991-01-01

    Outlines Thomas Jefferson's views of classic philosophical writers and various interpretations of their views on morality and epicureanism. Explains why teaching ancient and medieval political philosophy is necessary as an ethical supplement to U.S. political thought. States liberal democracy depends on the tension between reason and revelation.…

  18. Implementation of a level 1 trigger system using high speed serial (VXS) techniques for the 12GeV high luminosity experimental programs at Thomas Jefferson National Accelerator Facility

    International Nuclear Information System (INIS)

    Cuevas, C.; Raydo, B.; Dong, H.; Gupta, A.; Barbosa, F.J.; Wilson, J.; Taylor, W.M.; Jastrzembski, E.; Abbott, D.

    2009-01-01

    We will demonstrate a hardware and firmware solution for a complete fully pipelined multi-crate trigger system that takes advantage of the elegant high speed VXS serial extensions for VME. This trigger system includes three sections starting with the front end crate trigger processor (CTP), a global Sub-System Processor (SSP) and a Trigger Supervisor that manages the timing, synchronization and front end event readout. Within a front end crate, trigger information is gathered from each 16 Channel, 12 bit Flash ADC module at 4 nS intervals via the VXS backplane, to a Crate Trigger Processor (CTP). Each Crate Trigger Processor receives these 500 MB/S VXS links from the 16 FADC-250 modules, aligns skewed data inherent of Aurora protocol, and performs real time crate level trigger algorithms. The algorithm results are encoded using a Reed-Solomon technique and transmission of this Level 1 trigger data is sent to the SSP using a multi-fiber link. The multi-fiber link achieves an aggregate trigger data transfer rate to the global trigger at 8 Gb/s. The SSP receives and decodes Reed-Solomon error correcting transmission from each crate, aligns the data, and performs the global level trigger algorithms. The entire trigger system is synchronous and operates at 250 MHz with the Trigger Supervisor managing not only the front end event readout, but also the distribution of the critical timing clocks, synchronization signals, and the global trigger signals to each front end readout crate. These signals are distributed to the front end crates on a separate fiber link and each crate is synchronized using a unique encoding scheme to guarantee that each front end crate is synchronous with a fixed latency, independent of the distance between each crate. The overall trigger signal latency is <3 uS, and the proposed 12GeV experiments at Jefferson Lab require up to 200KHz Level 1 trigger rate.

  19. Making the Case for Jefferson Lab

    International Nuclear Information System (INIS)

    Gross, Franz

    2011-01-01

    This chapter is a personal account of the initial planning and competition for a new laboratory, which eventually became known as the Thomas Jefferson National Accelerator Facility, with the official nickname 'Jefferson Lab'. The period covered starts as far back as 1964, with the introduction of quarks, and extends up to the late 1980s after the initial team was assembled, the superconducting design was in place, and construction was well underway. I describe some of the major experiments that were proposed to justify the laboratory, reflect on the present status of those initially proposed experiments, and very briefly outline some of the new ideas that emerged after the laboratory was constructed. The science is presented in a simple manner intended for a lay audience, with some of the ideas illustrated by cartoons that were often used in popular lectures given during this period.

  20. Thomas Aquinas

    DEFF Research Database (Denmark)

    Haaning, Aksel

    2011-01-01

    Artiklen præsenterer Thomas Aquinas i højmiddelalderens intellektuelle historie, reviderer den for tiden gældende historiegrafi og præsenterer Aquinas' erotiske mystik fra prologen til Sentenskommentaren (ca.1252) og diskuterer "Aurora consurgens" som et muligt sidste skrift af den berømte...

  1. "Who Did Archaeology in the United States Before There Were Archaeologists and Why? Preprofessional Archaeologies of the Nineteenth Century." by Thomas C. Patterson. In Processual and Postprocessual Archaeologies, edited by Robert W. Preucel, Center for A

    Directory of Open Access Journals (Sweden)

    Alice B. Kehoe

    1992-05-01

    Full Text Available Patterson's paper is a condensation of two he had presented in 1988 and 1989, at conferences previous to the Carbondale Visiting Scholar Conference of 1989. He characterizes the early United States as harboring two contrasting political philosophies, agrarian versus mercantile capitalism. The agrarians, of whom Thomas Jefferson is of course the most illustrious example, followed the physiocrats in believing agricultural land to be the foundation of societies, therefore the manifest destiny of the new Republic was to conquer, and colonize more land. The mercantilists, primarily in Boston, emphasized civilization as the refinement of technologies, social order, and tastes. Both philosophies were cast in Enlightenment terms.

  2. Nuclear power and the Hamilton-Jefferson debate

    Energy Technology Data Exchange (ETDEWEB)

    Hacker, A.

    The basic sources of nuclear opposition derive from the philosophical arguments of Thomas Jefferson against Alexander Hamilton's vision of an industrial society with a strong central authority. Today's young people continue Jefferson's radical plea for the individual freedoms associated with personal ownership and limited government, but they accept the structure of the former while searching for the romanticism of the latter. The nuclear debate reflects this dichotomy and will continue even if the issues of waste disposal and safety are resolved. (DCK)

  3. The evolution of Jefferson Lab's control system

    International Nuclear Information System (INIS)

    K. S. White; M. Bickley; W. Watson

    1999-01-01

    Thomas Jefferson National Accelerator Facility's (Jefferson Lab) accelerator controls were initially implemented as a proprietary in-house system. During machine commissioning, problems were encountered leading to a decision to migrate to the Experimental Physics and Industrial Controls System (EPICS). Since then, the accelerator and all other laboratory controls have been successfully converted. In addition to implementing Jefferson Lab's controls using EPICS, new data visualization tools have been developed and existing programs have been enhanced with new capabilities. In order to provide a more generic interface for high level applications development, a device abstraction layer, called Common DEVice (CDEV), was implemented. These additions have been made available to other laboratories and are in use at many sites, including some that do not use EPICS. Control System development is not limited to computer scientists; operators, engineers and physicists frequently add capabilities using EPICS, CDEV, Tel/tk, and other tools. These contributions have tailored the control system for many different types of customers. For the future, the authors envision more intelligent processing and more capable tools for data storage, retrieval and visualization

  4. Control system reliability at Jefferson Lab

    International Nuclear Information System (INIS)

    White, K.S.; Areti, H.; Garza, O.

    1997-01-01

    At Thomas Jefferson National Accelerator Facility (Jefferson Lab), the availability of the control system is crucial to the operation of the accelerator for experimental programs. Jefferson Lab's control system, uses 68040 based microprocessors running VxWorks, Unix workstations, and a variety of VME, CAMAC. GPIB, and serial devices. The software consists of control system toolkit software, commercial packages, and over 200 custom and generic applications, some of which are highly complex. The challenge is to keep this highly diverse and still growing system, with over 162,000 control points, operating reliably, while managing changes and upgrades to both the hardware and software. Downtime attributable to the control system includes the time to troubleshoot and repair problems and the time to restore the machine to operation of the scheduled program. This paper describes the availability of the control system during the last year, the heaviest contributors to downtime and the response to problems. Strategies for improving the robustness of the control system am detailed and include changes in hardware, software, procedures and processes. The improvements range from the routine preventive hardware maintenance, to improving their ability to detect, predict and prevent problems. This paper also describes the software tools used to assist in control system troubleshooting, maintenance and failure recovery processes

  5. Become Jefferson in cyberspace

    Directory of Open Access Journals (Sweden)

    Ryszard Tadeusiewicz

    2010-01-01

    Full Text Available Very newly defined, but fast developing area of e-learning practice, is now known and available for everybody. Therefore it not need more explorers. Most of fundamental facts and properties are discovered and practical “colonization” of such area is already done. But the new area of practical activities of many e-learning specialists need now rules and regulations. Therefore we not need new Columbus of Cyberspace, but Jefferson of Cyberspace is necessary just now!

  6. 76 FR 8808 - Supplemental Final Environmental Impact Statement: Clark County, Indiana, and Jefferson County, KY

    Science.gov (United States)

    2011-02-15

    ..., financing, construction, operation and oversight of the Project, and an update to the major project finance... Indiana Ohio River Bridges (Project) in Clark County, Indiana and Jefferson County, Kentucky. FOR FURTHER INFORMATION CONTACT: Mr. Duane Thomas, Project Manager, Federal Highway Administration, John C. Watts Federal...

  7. Automated path length and M56 measurements at Jefferson Lab

    International Nuclear Information System (INIS)

    Hardy, D.; Tang, J.; Legg, R.

    1997-01-01

    Accurate measurement of path length and path length changes versus momentum (M 56 ) are critical for maintaining minimum beam energy spread in the CEBAF (Continuous Electron Beam Accelerator Facility) accelerator at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). The relative path length for each circuit of the beam (1256m) must be equal within 1.5 degrees of 1497 MHz RF phase. A relative path length measurement is made by measuring the relative phases of RF signals from a cavity that is separately excited for each pass of a 4.2 μs pulsed beam. This method distinguishes the path length to less than 0.5 path length error. The development of a VME based automated measurement system for path length and M 56 has contributed to faster machine setup time and has the potential for use as a feedback parameter for automated control

  8. Lessons Learned from the Jefferson Lab - SNS Cryomodule Production Run

    International Nuclear Information System (INIS)

    John Hogan; Edward Daly; John Fischer; Joseph Preble

    2005-01-01

    In light of the recent developments with the International Linear Collider (ILC), and the recommendation to utilize ''Cold'' technology for this future particle accelerator, this paper will present the lessons learned from the recently concluded Spallation Neutron Source (SNS) superconducting radio frequency (SRF) cryomodule production run at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). Over the past twenty years Jefferson Lab has worked with industry to successfully design, manufacture, test and commission more SRF cryomodules than any other entity in the United States. The knowledge gained from the design and fabrication of the SNS prototype, eleven - 0.61 (medium) beta and the twelve - 0.81 (high) beta cryomodules, will prove to be an effective asset to the ILC project. After delivery of the final production cryomodule in March 2005, design and fabrication data will be collected, evaluated and presented to make this information beneficial for future particle accelerator projects. Recommendations with respect to these findings will also be presented as an integral part of this paper

  9. jijimon k thomas

    Indian Academy of Sciences (India)

    JIJIMON K THOMAS. Articles written in Bulletin of Materials Science. Volume 40 Issue 6 October 2017 pp 1171-1178. Enhanced infrared transmission characteristics of microwave-sintered Y$_2$O$_3$–MgO nanocomposite · C T MATHEW SAM SOLOMON JACOB KOSHY JIJIMON K THOMAS · More Details Abstract ...

  10. Polarized electrons at Jefferson laboratory

    International Nuclear Information System (INIS)

    Sinclair, C.K.

    1998-01-01

    The CEBAF accelerator at Jefferson laboratory can deliver CW electron beams to three experimental halls simultaneously. A large fraction of the approved scientific program at the lab requires polarized electron beams. Many of these experiments, both polarized and unpolarized, require high average beam current as well. Since all electrons delivered to the experimental halls originate from the same cathode, delivery of polarized beam to a single hall requires using the polarized source to deliver beam to all experiments in simultaneous operation. The polarized source effort at Jefferson Lab is directed at obtaining very long polarized source operational lifetimes at high average current and beam polarization; at developing the capability to deliver all electrons leaving the polarized source to the experimental halls; and at delivering polarized beam to multiple experimental halls simultaneously. Initial operational experience with the polarized source will be presented. copyright 1998 American Institute of Physics

  11. Polarized Electrons at Jefferson Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Sinclair, C.K.

    1997-12-31

    The CEBAF accelerator at Jefferson laboratory can deliver CW electron beams to three experimental halls simultaneously. A large fraction of the approved scientific program at the lab requires polarized electron beams. Many of these experiments, both polarized and unpolarized, require high average beam current as well. Since all electrons delivered to the experimental halls originate from the same cathode, delivery of polarized beam to a single hall requires using the polarized source to deliver beam to all experiments in simultaneous operation. The polarized source effort at Jefferson Lab is directed at obtaining very long polarized source operational lifetimes at high average current and beam polarization; at developing the capability to deliver all electrons leaving the polarized source to the experimental halls; and at delivering polarized beam to multiple experimental halls simultaneously.initial operational experience with the polarized source will be presented.

  12. [Pearl Harbor.

    Science.gov (United States)

    Johnson, Jennifer, Ed.

    1992-01-01

    This issue of "Loblolly Magazine" was written in observance of the 50th anniversary of the U.S. entrance into World War II. The publication features interviews conducted by East Texas high school students with Clarence Otterman, one of the few survivors of the crew of the USS Arizona, which was bombed during the attack on Pearl Harbor,…

  13. MeV Mott polarimetry at Jefferson Lab

    International Nuclear Information System (INIS)

    Steigerwald, M.

    2001-01-01

    In the recent past, Mott polarimetry has been employed only at low electron beam energies (≅100 keV). Shortly after J. Sromicki demonstrated the first Mott scattering experiment on lead foils at 14 MeV (MAMI, 1994), a high energy Mott scattering polarimeter was developed at Thomas Jefferson National Accelerator Facility (5 MeV, 1995). An instrumental precision of 0.5% was achieved due to dramatic improvement in eliminating the background signal by means of collimation, shielding, time of flight and coincidence methods. Measurements for gold targets between 0.05 μm and 5 μm for electron energies between 2 and 8 MeV are presented. A model was developed to explain the depolarization effects in the target foils due to double scattering. The instrumental helicity correlated asymmetries were measured to smaller than 0.1%

  14. Present and future of hadron spectroscopy at Jefferson Lab

    CERN Document Server

    Battaglieri, M

    2010-01-01

    The CLAS Collaboration is operating the CLAS detector at theThomas Jefferson National Laboratory (JLab) in USA. The unique combination of the detector large acceptance and high intensity of the continuous electron beam of CEBAF has opened the way to a comprehensive study of the hadrons structure in kinematic domain between nuclear and particle physics. Hadron spectroscopy plays a central role in the physics program of the Collaboration. Many exclusive channels have been studied with virtual and real photon beams in a wide kinematic providing key information about the hadron structure as well as the reactions dynamic. In this contribution, the rich physics program covered by present and future experiments will be reviewed.

  15. Proposal for a slow positron facility at Jefferson National Laboratory

    Science.gov (United States)

    Mills, Allen P.

    2018-05-01

    One goal of the JPos-17 International Workshop on Physics with Positrons was to ascertain whether it would be a good idea to expand the mission of the Thomas Jefferson National Accelerator Facility (JLab) to include science with low energy (i.e. "slow") spin polarized positrons. It is probably true that experimentation with slow positrons would potentially have wide-ranging benefits comparable to those obtained with neutron and x-ray scattering, but it is certain that the full range of these benefits will never be fully available without an infrastructure comparable to that of existing neutron and x-ray facilities. The role for Jefferson Laboratory would therefore be to provide and maintain (1) a dedicated set of machines for making and manipulating high intensity, high brightness beams of polarized slow positrons; (2) a suite of unique and easily used instruments of wide utility that will make efficient use of the positrons; and (3) a group of on-site positron scientists to provide scientific leadership, instrument development, and user support. In this note some examples will be given of the science that might make a serious investment in a positron facility worthwhile. At the same time, the lessons learned from various proposed and successful positron facilities will be presented for consideration.

  16. Morgan, Prof. Thomas Hunt

    Indian Academy of Sciences (India)

    Home; Fellowship. Fellow Profile. Elected: 1939 Honorary. Morgan, Prof. Thomas Hunt Nobel Laureate (Medicine) - 1933. Date of birth: 25 September 1866. Date of death: 4 December 1945. YouTube; Twitter; Facebook; Blog. Academy News. IAS Logo. 29th Mid-year meeting. Posted on 19 January 2018. The 29th ...

  17. Thomas Mann som bibelfortolker

    DEFF Research Database (Denmark)

    Nielsen, Kirsten

    2007-01-01

    Artiklen beskæftiger sig med Thomas Manns reception og transformation af den gammeltestamentlige fortælling om Josef og hans brødre. Særlig interesse samler sig om de gudsbilleder, værket indeholder, herunder relationen til Satan. Det karakteristiske ved Manns gudsbillede er, at Gud ikke er tydelig...

  18. J K Thomas

    Indian Academy of Sciences (India)

    Home; Journals; Bulletin of Materials Science. J K Thomas. Articles written in Bulletin of Materials Science. Volume 31 Issue 5 October 2008 pp 719-722 Nanomaterials. Synthesis, characterization, sintering and dielectric properties of nanostructured perovskite-type oxide, Ba2GdSbO6 · C Vijayakumar H Padma Kumar Sam ...

  19. Happy Birthday, Thomas Edison!

    Science.gov (United States)

    Dalton, Edward A.

    1997-01-01

    Discusses the work and inventions of Thomas Edison and their use in making teachers and students aware of the importance of electrotechnology in their lives and in their futures. Enables students to learn about science, experimentation, research, the process of invention, and the thrill of discovery. Describes educational resources available from…

  20. Thomas precession in time

    International Nuclear Information System (INIS)

    Strnad, J.

    1983-01-01

    A Thomas precession mechanism is described which would become effective in a symmetric six-dimensional space-time if the time vector of a particle would rotate uniformly. For the effect a discrepancy of the decay time of particles in flight, proportional to their kinetic energy would be characteristic

  1. Practicing like Thomas Edison.

    Science.gov (United States)

    Baum, Neil; Ornstein, Hal

    2013-01-01

    For many centuries, medicine has practiced in a vacuum, and the healthcare profession has been isolated from other scientific disciplines. Beginning in the 20th century, doctors and scientists have looked to others for ideas, suggestions, innovations, and new technologies. Probably no one in the past hundred years has done so much to change the world than Thomas Edison. This article will discuss eight principles of Edison and how they may apply to our profession and our practices.

  2. Sir John Meurig Thomas.

    Science.gov (United States)

    Thomas, John Meurig

    2013-10-11

    "My greatest achievement has been to combine being a teacher, a researcher, and a popularizer of science for over 50 years. My worst nightmare is to find myself dumbstruck when I am about to give a lecture …︁" This and more about Sir John Meurig Thomas can be found on page 10938. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  3. The Jefferson Lab Trigger Supervisor System

    International Nuclear Information System (INIS)

    Ed Jastrzembsi; David Abbott; Graham Heyes; R.W. MacLeod; Carl Timmer; Elliott Wolin

    2000-01-01

    We discuss the design and performance of a Trigger Supervisor System for use in nuclear physics experiments at Jefferson Lab. We also discuss the enhanced features of a new Trigger Supervisor Module now under construction

  4. The Jefferson Lab Trigger Supervisor System

    International Nuclear Information System (INIS)

    Jastrzembski, E.; Abbott, D.J.; Heyes, W.G.; MacLeod, R.W.; Timmer, C.; Wolin, E.

    1999-01-01

    The authors discuss the design and performance of a Trigger Supervisor System for use in nuclear physics experiments at Jefferson Lab. They also discuss the enhanced features of a new Trigger Supervisor Module now under construction

  5. Electro- and Photoproduction of Omega(783) Mesons using CLAS at Jefferson Lab

    International Nuclear Information System (INIS)

    Manak, J.J.; Volker Burkert; Franz Klein; Bernhard Mecking; Alan Coleman; Herb Funsten

    2000-01-01

    Electro- and photoproduction of w(783) from a proton target have been measured in the CLAS detector at the Thomas Jefferson National Accelerator Facility in Newport News VA. The photoproduction data were taken over a photon energy range from 0.5 to 2.3 GeV, while the electroproduction data was obtained over a W range of 1.8-2.5 GeV/c2. Preliminary acceptance corrected center-of-mass angular distributions have been examined for both data sets

  6. A composite thin vacuum window for the CLAS photon tagger at Jefferson lab

    International Nuclear Information System (INIS)

    Matthews, S.K.; Crannell, Hall; O'Brien, J.T.; Sober, D.I.

    1999-01-01

    The construction of a thin vacuum window, currently in use on the CLAS photon tagging system at the Thomas Jefferson National Accelerator Facility, is described. A layer of woven Kevlar cloth supports a much thinner membrane of aluminized Mylar. Notable features of this particular window include its overall length (9.6 m), and the fact that the entire load is supported by the epoxy seal with no mechanical clamping around the edges. Results from a diverse program of materials testing, including a clear dependence of leak rate on relative humidity, are also reported

  7. A composite thin vacuum window for the CLAS photon tagger at Jefferson lab

    CERN Document Server

    Matthews, S K; O'Brien, J T; Sober, D I

    1999-01-01

    The construction of a thin vacuum window, currently in use on the CLAS photon tagging system at the Thomas Jefferson National Accelerator Facility, is described. A layer of woven Kevlar cloth supports a much thinner membrane of aluminized Mylar. Notable features of this particular window include its overall length (9.6 m), and the fact that the entire load is supported by the epoxy seal with no mechanical clamping around the edges. Results from a diverse program of materials testing, including a clear dependence of leak rate on relative humidity, are also reported.

  8. Jefferson Lab's Distributed Data Acquisition

    International Nuclear Information System (INIS)

    Trent Allison; Thomas Powers

    2006-01-01

    Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) occasionally experiences fast intermittent beam instabilities that are difficult to isolate and result in downtime. The Distributed Data Acquisition (Dist DAQ) system is being developed to detect and quickly locate such instabilities. It will consist of multiple Ethernet based data acquisition chassis distributed throughout the seven-eights of a mile CEBAF site. Each chassis will monitor various control system signals that are only available locally and/or monitored by systems with small bandwidths that cannot identify fast transients. The chassis will collect data at rates up to 40 Msps in circular buffers that can be frozen and unrolled after an event trigger. These triggers will be derived from signals such as periodic timers or accelerator faults and be distributed via a custom fiber optic event trigger network. This triggering scheme will allow all the data acquisition chassis to be triggered simultaneously and provide a snapshot of relevant CEBAF control signals. The data will then be automatically analyzed for frequency content and transients to determine if and where instabilities exist

  9. 12 GeV detector technology at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Leckey, John P. [Indiana University, Bloomington, IN 47405 (United States); Collaboration: GlueX Collaboration

    2013-04-19

    The Thomas Jefferson National Accelerator Facility (JLab) is presently in the middle of an upgrade to increase the energy of its CW electron beam from 6 GeV to 12 GeV along with the addition of a fourth experimental hall. Driven both by necessity and availability, novel detectors and electronics modules have been used in the upgrade. One such sensor is the Silicon Photomultiplier (SiPM), specifically a Multi-Pixel Photon Counter (MPPC), which is an array of avalanche photodiode pixels operating in Geiger mode that are used to sense photons. The SiPMs replace conventional photomultiplier tubes and have several distinct advantages including the safe operation in a magnetic field and the lack of need for high voltage. Another key to 12 GeV success is advanced fast electronics. Jlab will use custom 250 MHz and 125 MHz 12-bit analog to digital converters (ADCs) and time to digital converters (TDCs) all of which take advantage of VME Switched Serial (VXS) bus with its GB/s high bandwidth readout capability. These new technologies will be used to readout drift chambers, calorimeters, spectrometers and other particle detectors at Jlab once the 12 GeV upgrade is complete. The largest experiment at Jlab utilizing these components is GlueX - an experiment in the newly constructed Hall D that will study the photoproduction of light mesons in the search for hybrid mesons. The performance of these components and their respective detectors will be presented.

  10. Optical modeling of the Jefferson Lab IR Demo FEL

    International Nuclear Information System (INIS)

    Neil, G.; Benson, S.; Shinn, M.; Davidson, P.; Kloppel, P.

    1997-01-01

    The Thomas Jefferson National Accelerator Facility (formerly known as CEBAF) has embarked on the construction of a 1 kW free-electron laser operating initially at 3 microns that is designed for laser-material interaction experiments and to explore the feasibility of scaling the system in power and wavelength for industrial and Navy defense applications. The superconducting radio-frequency linac, and single-pass transport which accelerates the beam from injector to wiggler, followed by energy-recovery deceleration to a dump. The electron and optical beam time structure in the design consists of a train of pecosecond pulses at a 37.425 MHz pulse repetition rate. The initial optical configuration is a conventional near-concentric resonator with transmissive outcoupling. Future upgrades of the system will increase the power and shorten the operating wavelength, and utilize a more advanced resonator system capable of scaling to high powers. The optical system of the laser has been mode led using the GLAD code by using a Beer's-law region to mimic the FEL interaction. Effects such as mirror heating have been calculated and compared with analytical treatments. The magnitude of the distorium for several materials and wavelengths has been estimated. The advantages as well as the limitations of this approach are discussed

  11. High-intensity positron microprobe at the Thomas Jefferson National Accelerator Facility

    International Nuclear Information System (INIS)

    Golge, S.; Vlahovic, B.; Wojtsekhowski, B.

    2014-01-01

    We present a conceptual design for a novel continuous wave electron-linac based high-intensity high-brightness slow-positron production source with a projected intensity on the order of 10 10  e + /s. Reaching this intensity in our design relies on the transport of positrons (T + below 600 keV) from the electron-positron pair production converter target to a low-radiation and low-temperature area for moderation in a high-efficiency cryogenic rare gas moderator, solid Ne. This design progressed through Monte Carlo optimizations of: electron/positron beam energies and converter target thickness, transport of the e + beam from the converter to the moderator, extraction of the e + beam from the magnetic channel, a synchronized raster system, and moderator efficiency calculations. For the extraction of e + from the magnetic channel, a magnetic field terminator plug prototype has been built and experimental results on the effectiveness of the prototype are presented. The dissipation of the heat away from the converter target and radiation protection measures are also discussed.

  12. Design and implementation of a slow orbit control package at Thomas Jefferson National Accelerator Facility

    International Nuclear Information System (INIS)

    Zeijts, J. van; Witherspoon, S.; Watson, W.A.

    1997-01-01

    The authors describe the design and implementation of a C++ client/server based slow orbit and energy control package based on the CDEV software control bus. Several client applications are described and operational experience is given

  13. High-intensity positron microprobe at the Thomas Jefferson National Accelerator Facility

    Energy Technology Data Exchange (ETDEWEB)

    Golge, S., E-mail: serkan.golge@nasa.gov; Vlahovic, B. [North Carolina Central University, Durham, North Carolina 27707 (United States); Wojtsekhowski, B. [Jefferson Laboratory, 12000 Jefferson Ave., Newport News, Virginia 23606 (United States)

    2014-06-21

    We present a conceptual design for a novel continuous wave electron-linac based high-intensity high-brightness slow-positron production source with a projected intensity on the order of 10{sup 10 }e{sup +}/s. Reaching this intensity in our design relies on the transport of positrons (T{sub +} below 600 keV) from the electron-positron pair production converter target to a low-radiation and low-temperature area for moderation in a high-efficiency cryogenic rare gas moderator, solid Ne. This design progressed through Monte Carlo optimizations of: electron/positron beam energies and converter target thickness, transport of the e{sup +} beam from the converter to the moderator, extraction of the e{sup +} beam from the magnetic channel, a synchronized raster system, and moderator efficiency calculations. For the extraction of e{sup +} from the magnetic channel, a magnetic field terminator plug prototype has been built and experimental results on the effectiveness of the prototype are presented. The dissipation of the heat away from the converter target and radiation protection measures are also discussed.

  14. Thomas Kibble visits CERN

    CERN Multimedia

    Rosaria Marraffino

    2014-01-01

    Emeritus Professor Sir Thomas W.B. Kibble, from Imperial College London visited LHC for the first time last week and delivered a colloquium on the genesis of electroweak unification and the Brout-Englert-Higgs mechanism.   From left to right: Jim Virdee, Tiziano Camporesi, Tom Kibble and Austin Ball on the visit to CMS. On his way back from Trieste, where he received the Abdus Salam International Centre for Theoretical Physics' Dirac Medal, Tom Kibble stopped by CERN for his first visit to the LHC. Kibble had a standing invitation from Jim Virdee, former CMS spokesperson, who is also a researcher from Imperial College London. Peter Jenni (left) and Tom Kibble tour the ATLAS detector. (Image: Erwan Bertrand) Kibble made the trip to CERN a family outing and brought along 14 relatives,  including his children and grandchildren. He visited the ATLAS detector with Peter Jenni, its former spokesperson, on Friday 10 October. In the afternoon, Kibble delivered a colloquium in the...

  15. Coastal Harbors Modeling Facility

    Data.gov (United States)

    Federal Laboratory Consortium — The Coastal Harbors Modeling Facility is used to aid in the planning of harbor development and in the design and layout of breakwaters, absorbers, etc.. The goal is...

  16. Algo sobre a Europa: Thomas More

    OpenAIRE

    Coelho, Rui Pina

    2005-01-01

    Crítica de teatro / Thomas More / William Shakespeare / Anthony Munday / Robert Delamere / Royal Shakespeare Company ABSTRACT - Review of the theatre performance Thomas More, by Anthony Munday, Henry Chettle, Thomas Dekker, Thomas Heywood and William Shakespeare, directed by Robert Delamere, Royal Shakespeare Company (2005).

  17. The Qweakp experiment at Jefferson Laboratory

    International Nuclear Information System (INIS)

    Page, Shelley

    2008-01-01

    A major new experiment is being prepared at Jefferson Laboratory to measure the proton's weak charge via the parity violating asymmetry in elastic electron-proton scattering at very low momentum transfer. The Standard Model makes a firm prediction of the proton' weak charge, Q w p = 1 - 4 sin2thetaW, based on the running of the weak mixing angle sin2thetaW from the Z 0 pole down to low energies, corresponding to a 10sigma effect in our experiment. Our ultimate goal is to determine the proton' weak charge with 4% combined statistical and systematic errors, which in turn leads to a 0.3% measurement of sin2 thetaW. The experiment is currently under construction; installation in Hall C at Jefferson Lab followed by data taking is planned for 2009.

  18. Jefferson Lab Data Acquisition Run Control System

    International Nuclear Information System (INIS)

    Vardan Gyurjyan; Carl Timmer; David Abbott; William Heyes; Edward Jastrzembski; David Lawrence; Elliott Wolin

    2004-01-01

    A general overview of the Jefferson Lab data acquisition run control system is presented. This run control system is designed to operate the configuration, control, and monitoring of all Jefferson Lab experiments. It controls data-taking activities by coordinating the operation of DAQ sub-systems, online software components and third-party software such as external slow control systems. The main, unique feature which sets this system apart from conventional systems is its incorporation of intelligent agent concepts. Intelligent agents are autonomous programs which interact with each other through certain protocols on a peer-to-peer level. In this case, the protocols and standards used come from the domain-independent Foundation for Intelligent Physical Agents (FIPA), and the implementation used is the Java Agent Development Framework (JADE). A lightweight, XML/RDF-based language was developed to standardize the description of the run control system for configuration purposes

  19. Thomas-Fermi molecular dynamics

    International Nuclear Information System (INIS)

    Clerouin, J.; Pollock, E.L.; Zerah, G.

    1992-01-01

    A three-dimensional density-functional molecular-dynamics code is developed for the Thomas-Fermi density functional as a prototype for density functionals using only the density. Following Car and Parrinello [Phys. Rev. Lett. 55, 2471 (1985)], the electronic density is treated as a dynamical variable. The electronic densities are verified against a multi-ion Thomas-Fermi algorithm due to Parker [Phys. Rev. A 38, 2205 (1988)]. As an initial application, the effect of electronic polarization in enhancing ionic diffusion in strongly coupled plasmas is demonstrated

  20. Jefferson Lab: A Long Decade of Physics

    International Nuclear Information System (INIS)

    Montgomery, Hugh

    2011-01-01

    Jefferson Lab was created in 1984 and started operating in about 1996. 2011 is an appropriate time to try to take a look at the results that have appeared, what has been learned, and what has been exciting for our scientific community. Rather than attempt to construct a coherent view with a single author or at least a small number, we have, instead, invited small groups of people who have been intimately involved in the work itself to make contributions. These people are accelerator experts, experimentalists and theorists, staff and users. We have, in the main, sought reviews of the actual sub-fields. The primary exception is the first paper, which sets the scene as it was, in one person's view, at the beginning of Jefferson Lab. In reviewing the material as it appeared, I was impressed by the breadth of the material. Major advances are documented from form factors to structure functions, from spectroscopy to physics beyond the standard model of nuclear and particle physics. Recognition of the part played by spin, the helicities of the beams, the polarizations of the targets, and the polarizations of final state particles, is inescapable. Access to the weak interaction amplitudes through measurements of the parity violating asymmetries has led to quantification of the strange content of the nucleon and the neutron radius of lead, and to measurements of the electroweak mixing angle. Lattice QCD calculations flourished and are setting the platform for understanding of the spectroscopy of baryons and mesons. But the star of the game was the accelerator. Its performance enabled the physics and also the use of the technology to generate a powerful free electron laser. These important pieces of Jefferson Lab physics are given their place. As the third Director of Jefferson Lab, and on behalf of the other physicists and others presently associated with the lab, I would like to express my admiration and gratitude for the efforts of the directors, chief scientists

  1. Thomas, Prof. Sir John Meurig

    Indian Academy of Sciences (India)

    Thomas, Prof. Sir John Meurig FRS. Date of birth: 15 December 1932. Address: Department of Materials Science and, Metallurgy, New Museums Site, 27, Babbage ... Theory Of Evolution. Posted on 23 January 2018. Joint Statement by the Three Science Academies of India on the teaching of the theory of evolution more.

  2. Recent Measurements from the G0 Parity Violation Experiment Carried out at Jefferson Laboratory

    International Nuclear Information System (INIS)

    Bimbot, L.

    2008-01-01

    The measurements were made at the Thomas Jefferson National Accelerator Facility (J Lab.), Newport News, V A (USA) in the backward angle configuration set-up. A toroidal spectrometer, associated with particle detectors, is used to count electrons and pions from a liquid hydrogen or deuterium target. Parity-violating than the former one by orders of magnitude and requires special techniques to be observed and isolated. Parity violation is specific to the electro-weak interaction and forms the basis asymmetries in elastic electron-proton scattering are determined for momentum transfers of Q 2 = 0.62 and 0.23 (GeV/c) 2 . Combined with previous results obtained with the forward angle configuration setup, these measurements give access to the separation of the values of electric and magnetic strange form factors of the proton. More results may be extracted from the asymmetries for inelastically scattered electrons and for produced pions

  3. Jefferson Lab IEC 61508/61511 Safety PLC Based Safety System

    International Nuclear Information System (INIS)

    Mahoney, Kelly; Robertson, Henry

    2009-01-01

    This paper describes the design of the new 12 GeV Upgrade Personnel Safety System (PSS) at the Thomas Jefferson National Accelerator Facility (TJNAF). The new PSS design is based on the implementation of systems designed to meet international standards IEC61508 and IEC 61511 for programmable safety systems. In order to meet the IEC standards, TJNAF engineers evaluated several SIL 3 Safety PLCs before deciding on an optimal architecture. In addition to hardware considerations, software quality standards and practices must also be considered. Finally, we will discuss R and D that may lead to both high safety reliability and high machine availability that may be applicable to future accelerators such as the ILC.

  4. Runtime accelerator configuration tools at Jefferson Laboratory

    International Nuclear Information System (INIS)

    Tiefenback, M.G.; Doolittle, L.; Benesch, J.F.

    1997-01-01

    RF and magnet system configuration and monitoring tools are being implemented at Jefferson Lab to improve system reliability and reduce operating costs. They are prototype components of the Momentum Management System being developed. The RF is of special interest because it affects the momentum and momentum spread of the beam, and because of the immediate financial benefit of managing the klystron DC supply power. The authors describe present and planned monitoring of accelerating system parameters, use of these data, RF system performance calculations, and procedures for magnet configuration for handling beam of any of five beam energies to any of three targets

  5. Future Scientific Opportunities At Jefferson Lab

    International Nuclear Information System (INIS)

    Thomas, Anthony

    2007-01-01

    Nuclear physics requires at least one major facility world-wide which is capable of fully exploiting the properties of the electro-weak force to investigate precisely the structure of strongly interacting systems. At its current maximum energy of 6 GeV Jefferson Lab has provided a wealth of important information on the structure of nucleons and nuclei. However, the plans to double the energy over the next seven years promise to open new frontiers in nuclear and particle physics. We briefly describe the plans for the 12 GeV Upgrade and the associated physics opportunities.

  6. Recent skyshine calculations at Jefferson Lab

    International Nuclear Information System (INIS)

    Degtyarenko, P.

    1997-01-01

    New calculations of the skyshine dose distribution of neutrons and secondary photons have been performed at Jefferson Lab using the Monte Carlo method. The dose dependence on neutron energy, distance to the neutron source, polar angle of a source neutron, and azimuthal angle between the observation point and the momentum direction of a source neutron have been studied. The azimuthally asymmetric term in the skyshine dose distribution is shown to be important in the dose calculations around high-energy accelerator facilities. A parameterization formula and corresponding computer code have been developed which can be used for detailed calculations of the skyshine dose maps

  7. Thomas precession for dressed particles

    Science.gov (United States)

    Oblak, Blagoje

    2018-03-01

    We consider a particle dressed with boundary gravitons in three-dimensional Minkowski space. The existence of BMS transformations implies that the particle’s wavefunction picks up a Berry phase when subjected to changes of reference frames that trace a closed path in the asymptotic symmetry group. We evaluate this phase and show that, for BMS superrotations, it provides a gravitational generalization of Thomas precession. In principle, such phases are observable signatures of asymptotic symmetries.

  8. PC/104 Embedded IOCs at Jefferson Lab

    International Nuclear Information System (INIS)

    Yan, Jianxun; Allison, Trent; Witherspoon, Sue; Cuffe, Anthony

    2009-01-01

    Jefferson Lab has developed embedded IOCs based on PC/104 single board computers (SBC) for low level control systems. The PC/104 IOCs run EPICS on top of the RTEMS operating system. Two types of control system configurations are used in different applications, PC/104 SBC with commercial PC/104 I/O cards and PC/104 SBC with custom designed FPGA-based boards. RTEMS was built with CEXP shell to run on the PC/104 SBC. CEXP shell provides the function of dynamic object loading, which is similar to the widely used VxWorks operating system. Standard software configurations were setup for PC/104 IOC application development to provide a familiar format for new projects as well as ease the conversion of applications from VME based IOCs to PC/104 IOCs. Many new projects at Jefferson Lab are going to employ PC/104 SBCs as IOCs and some applications have already been running them for accelerator operations. The PC/104 - RTEMS IOC provides a free open source Real-Time Operating System (RTOS), low cost/maintenance, easily installed/ configured, flexible, and reliable solution for accelerator control and 12GeV Upgrade projects.

  9. New GPIB Control Software at Jefferson Lab

    International Nuclear Information System (INIS)

    Matthew Bickley; Pavel Chevtsov

    2005-01-01

    The control of GPIB devices at Jefferson Lab is based on the GPIB device/driver library. The library is a part of the device/driver development framework. It is activated with the use of the device configuration files that define all hardware components used in the control system to communicate with GPIB devices. As soon as the software is activated, it is ready to handle any device connected to these components and only needs to know the set of commands that the device can understand. The old GPIB control software at Jefferson Lab requires the definition of these commands in the form of a device control software module written in C for each device. Though such modules are relatively simple, they have to be created, successfully compiled, and supported for all control computer platforms. In the new version of GPIB control software all device communication commands are defined in device protocol (ASCII text) files. This makes the support of GPIB devices in the control system much easier

  10. Groundwater data collection for the Quinault Indian Nation, Grays Harbor and Jefferson Counties, Washington

    Science.gov (United States)

    Kahle, Sue C.; Fasser, Elisabeth T.; Olsen, Theresa D.

    2017-11-03

    Groundwater data were collected on the Quinault Indian Reservation to provide the Quinualt Indian Nation (QIN) with basic knowledge of the existing wells and springs on the reservation, and to establish a water-level network to be monitored by QIN to begin building a long-term groundwater dataset. The 327 mi2 Quinault Indian Reservation is located within the heavily forested Queets-Quinault watershed along the west-central coast of Washington and includes the coastal communities of Taholah and Queets, and the inland community of Amanda Park. Groundwater data were collected or compiled for 87 sites—82 wells and 5 springs. In October 2016, a field inventory was done to locate the sites and acquire site data. Groundwater levels were measured in 15 of the field-inventoried wells and 3 of those wells were observed as flowing (artesian). A monthly groundwater‑level monitoring network of 13 wells was established by the U.S. Geological Survey in March 2017, and the network was transferred to QIN in June 2017 for continued measurements.Several data needs were identified that would provide a more complete understanding of the groundwater system of the Quinault Indian Reservation. The collection of monthly water-level data for multiple years is an important first step in understanding seasonal and long term changes in water levels. Additionally, the collection of baseline groundwater chemistry and quality data across the reservation would help with future efforts to monitor existing and potentially changing groundwater quality conditions. Development of a water budget of the Queets-Quinault Watershed and the reservation within that area would provide water users with a better understanding of this important resource and provide needed information about the competing demands on local water sources.

  11. RICH Detector for Jefferson Labs CLAS12

    Science.gov (United States)

    Trotta, Richard; Torisky, Ben; Benmokhtar, Fatiha

    2015-10-01

    Jefferson Lab (Jlab) is performing a large-scale upgrade to its Continuous Electron Beam Accelerator Facility (CEBAF) up to 12GeV beams. The Large Acceptance Spectrometer (CLAS12) in Hall B is being upgraded and a new hybrid Ring Imaging Cherenkov (RICH) detector is being developed to provide better kaon - pion separation throughout the 3 to 8 GeV/c momentum range. This detector will be used for a variety of Semi-Inclusive Deep Inelastic Scattering experiments. Cherenkov light can be accurately detected by a large array of sophisticated Multi-Anode Photomultiplier Tubes (MA-PMT) and heavier particles, like kaons, will span the inner radii. We are presenting our work on the creation of the RICH's geometry within the CLAS12 java framework. This development is crucial for future calibration, reconstructions and analysis of the detector.

  12. The Jefferson Lab Frozen Spin Target

    Energy Technology Data Exchange (ETDEWEB)

    Christopher Keith, James Brock, Christopher Carlin, Sara Comer, David Kashy, Josephine McAndrew, David Meekins, Eugene Pasyuk, Joshua Pierce, Mikell Seely

    2012-08-01

    A frozen spin polarized target, constructed at Jefferson Lab for use inside a large acceptance spectrometer, is described. The target has been utilized for photoproduction measurements with polarized tagged photons of both longitudinal and circular polarization. Protons in TEMPO-doped butanol were dynamically polarized to approximately 90% outside the spectrometer at 5 T and 200-300 mK. Photoproduction data were acquired with the target inside the spectrometer at a frozen-spin temperature of approximately 30 mK with the polarization maintained by a thin, superconducting coil installed inside the target cryostat. A 0.56 T solenoid was used for longitudinal target polarization and a 0.50 T dipole for transverse polarization. Spin relaxation times as high as 4000 hours were observed. We also report polarization results for deuterated propanediol doped with the trityl radical OX063.

  13. The meson spectroscopy program with CLAS12 at Jefferson Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Rizzo, Alessandro [Univ. of Rome Tor Vergata (Italy)

    2016-06-01

    The study of the hadronic spectrum is one of the most powerful tools to investigate the mechanism at the basis of quark confinement within hadrons. A precise determination of the spectrum allows not only to assess the properties of the hadrons in their fundamental and excited states, but also to investigate the existence of states resulting from alternative configurations of quarks and gluons, such as the glue-balls, hybrid hadrons and many-quarks configurations. The study of the mesonic part of the spectrum can play a central role in this investigation thanks to the strong signature that the hybrid mesons are expected to have: the presence of explicit gluonic degrees of freedom in such states may result in JPC configurations not allowed for the standard q ¯ q states. From the experimental side the expected high-multiplicity decays of the hybrid mesons require an apparatus with high performances in terms of rate-capability, resolution and acceptance. The CLAS12 experiment (formally MesonEx) is one of new-generation experiments at Thomas Jefferson National Laboratory (JLAB) for which an unprecedented statistics of events, with fully reconstructed kinematics for large particle multiplicity decays, will be available. A wide scientific program that will start in 2016 has been deployed for meson spectrum investigation with the CLAS12 apparatus in Hall B at energies up to 11 GeV. One of the main parts of the program is based on the use of the Forward Tagger apparatus, which will allow CLAS12 experiment to extend the study of meson electro-production to the quasi-real photo-production kinematical region (very low Q2), where the production of hybrid mesons is expected to be favoured. The data analysis which is required to extract the signal from hybrid states should go beyond the standard partial wave analysis techniques and a new analysis framework is being set up through the international network Haspect. The Haspect Network gathers people involved into theoretical and

  14. Thomas Vicary, barber-surgeon.

    Science.gov (United States)

    Thomas, Duncan P

    2006-05-01

    An Act of Parliament in 1540 uniting the barbers and surgeons to form the Barber-Surgeons' Company represented an important foundation stone towards better surgery in England. Thomas Vicary, who played a pivotal role in promoting this union, was a leading surgeon in London in the middle of the 16th century. While Vicary made no direct contribution to surgical knowledge, he should be remembered primarily as one who contributed much towards the early organization and teaching of surgery and to the consequent benefits that flowed from this improvement.

  15. The Jefferson Lab High Power Light Source

    Energy Technology Data Exchange (ETDEWEB)

    James R. Boyce

    2006-01-01

    Jefferson Lab has designed, built and operated two high average power free-electron lasers (FEL) using superconducting RF (SRF) technology and energy recovery techniques. Between 1999-2001 Jefferson Lab operated the IR Demo FEL. This device produced over 2 kW in the mid-infrared, in addition to producing world record average powers in the visible (50 W), ultraviolet (10 W) and terahertz range (50 W) for tunable, short-pulse (< ps) light. This FEL was the first high power demonstration of an accelerator configuration that is being exploited for a number of new accelerator-driven light source facilities that are currently under design or construction. The driver accelerator for the IR Demo FEL uses an Energy Recovered Linac (ERL) configuration that improves the energy efficiency and lowers both the capital and operating cost of such devices by recovering most of the power in the spent electron beam after optical power is extracted from the beam. The IR Demo FEL was de-commissioned in late 2001 for an upgraded FEL for extending the IR power to over 10 kW and the ultraviolet power to over 1 kW. The FEL Upgrade achieved 10 kW of average power in the mid-IR (6 microns) in July of 2004, and its IR operation currently is being extended down to 1 micron. In addition, we have demonstrated the capability of on/off cycling and recovering over a megawatt of electron beam power without diminishing machine performance. A complementary UV FEL will come on-line within the next year. This paper presents a summary of the FEL characteristics, user community accomplishments with the IR Demo, and planned user experiments.

  16. 78 FR 16780 - Special Local Regulation; 2013 International Rolex Regatta; St. Thomas Harbor; St. Thomas, U.S...

    Science.gov (United States)

    2013-03-19

    ....S. Virgin Islands AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard.... Virgin Islands during the 2013 International Rolex Regatta, a series of sail boat races. The event is.... and 5 p.m., Monday through Friday, except Federal holidays. FOR FURTHER INFORMATION CONTACT: If you...

  17. Nonextensive Thomas-Fermi model

    Science.gov (United States)

    Shivamoggi, Bhimsen; Martinenko, Evgeny

    2007-11-01

    Nonextensive Thomas-Fermi model was father investigated in the following directions: Heavy atom in strong magnetic field. following Shivamoggi work on the extension of Kadomtsev equation we applied nonextensive formalism to father generalize TF model for the very strong magnetic fields (of order 10e12 G). The generalized TF equation and the binding energy of atom were calculated which contain a new nonextensive term dominating the classical one. The binding energy of a heavy atom was also evaluated. Thomas-Fermi equations in N dimensions which is technically the same as in Shivamoggi (1998) ,but behavior is different and in interesting 2 D case nonextesivity prevents from becoming linear ODE as in classical case. Effect of nonextensivity on dielectrical screening reveals itself in the reduction of the envelope radius. It was shown that nonextesivity in each case is responsible for new term dominating classical thermal correction term by order of magnitude, which is vanishing in a limit q->1. Therefore it appears that nonextensive term is ubiquitous for a wide range of systems and father work is needed to understand the origin of it.

  18. Thomas: o primeiro blanchotiano = Thomas: the first Blanchotian

    Directory of Open Access Journals (Sweden)

    Pimentel, Davi Andrade

    2013-01-01

    Full Text Available Este artigo analisa a narrativa Thomas l’obscur, de Maurice Blanchot, a partir da configuração da outra noite blanchotiana, noite que apresenta a falta e a ausência da palavra no que ela tem de mais agressiva, de mais excessiva e de mais absurdamente maravilhosa. Neste artigo, tenho como interlocutor teórico os escritos sobre literatura do próprio autor. O interesse nesse diálogo consiste em apresentar a fusão apaixonada de seus escritos ficcionais e teóricos. Em Maurice Blanchot, não há pontos de isolamento e nem de divergência entre seus dois pólos de escritura, mas sim uma complementação, uma convergência, entre o que denominamos de ficção e de teoria

  19. Thomas Bartholin. Domus Anatomica Hafniensis brevissima descripta

    DEFF Research Database (Denmark)

    Bruun, Niels W.; Fink-Jensen, Morten

    In 1662 Thomas Bartholin published A Short Description of the Anatomy House in Copenhagen, which describes the layout of the Anatomy House alongside the first eighteen years of its history.......In 1662 Thomas Bartholin published A Short Description of the Anatomy House in Copenhagen, which describes the layout of the Anatomy House alongside the first eighteen years of its history....

  20. Mon Amour, de Thomas Ferrand

    OpenAIRE

    Châtelet, Caroline

    2018-01-01

    Dans l’un de ses précédents spectacles, Extase de Sainte Machine, Thomas Ferrand mettait en scène deux comédiens dans un espace nu. Debout avec à leurs pieds un pack de bières, ceux-ci ne bougeaient pas, ne parlaient pas, seule l’intensité lumineuse et la musique amenant le mouvement. Proposition radicale par son atmosphère dérivant du contemplatif à l’hypnotisme, Extase de Sainte-Machine frôlait, aussi, une forme d’hermétisme. Comme si à vouloir travailler sur des états statiques, sur le mot...

  1. Deeply virtual Compton scattering at Jefferson Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Biselli, Angela S. [Fairfield University - Department of Physics 1073 North Benson Road, Fairfield, CT 06430, USA; Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2016-08-01

    The generalized parton distributions (GPDs) have emerged as a universal tool to describe hadrons in terms of their elementary constituents, the quarks and the gluons. Deeply virtual Compton scattering (DVCS) on a proton or neutron ($N$), $e N \\rightarrow e' N' \\gamma$, is the process more directly interpretable in terms of GPDs. The amplitudes of DVCS and Bethe-Heitler, the process where a photon is emitted by either the incident or scattered electron, can be accessed via cross-section measurements or exploiting their interference which gives rise to spin asymmetries. Spin asymmetries, cross sections and cross-section differences can be connected to different combinations of the four leading-twist GPDs (${H}$, ${E}$, ${\\tilde{H}}$, ${\\tilde{E}}$) for each quark flavors, depending on the observable and on the type of target. This paper gives an overview of recent experimental results obtained for DVCS at Jefferson Laboratory in the halls A and B. Several experiments have been done extracting DVCS observables over large kinematics regions. Multiple measurements with overlapping kinematic regions allow to perform a quasi-model independent extraction of the Compton form factors, which are GPDs integrals, revealing a 3D image of the nucleon.

  2. In Conversation with: Professor Liz Thomas

    Directory of Open Access Journals (Sweden)

    Karen Nelson

    2012-08-01

    Full Text Available Editors Karen Nelson, John Clarke and Sally Kift interview Professor Liz Thomas,  Director of the Widening Participation Research Centre at Edge Hill University.  She is also Lead Adviser Retention and Success at the Higher Education Academy, England.   Professor Thomas was one of the keynote speakers at the 15th International First Year in Higher Education Conference held in Brisbane, Australia from the 26th – 29th of June, 2012.  Professor Thomas joined the Journal Editors at the conclusion of the main conference program to explore some of the key themes raised in her address.  

  3. Spin observables in charged pion photo-production from polarized neutrons in solid HD at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Kageya, Tsuneo [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Ho, Dao [Carnegie Mellon Univ., Pittsburgh, PA (United States); Peng, Peng [Univ. of Virginia, Charlottesville, VA (United States); Klein, Franz [George Washington Univ., Washington, DC (United States); Sandorfi, Andrew M. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Schumacher, Reinhard A. [Carnegie Mellon Univ., Pittsburgh, PA (United States)

    2018-04-01

    E asymmetries have been extracted from double-polarizationexperiments in Hall-B of the Thomas Jefferson National Accelerator Facility (JLab). Results have been obtained from the E06-101 (g14) experiment, using circularly polarized photon beams, longitudinally polarized Deuterons in solid HD targets, and the CEBAF Large Acceptance Spectrometer (CLAS). The results cover a range inW from 1.48 to 2.32 GeV. Three independent analyses, using distinctly different methods, have been combined to obtain the final values, which have been published recently. Partial wave analyses (PWA), which have had to rely on a sparse neutron data base, havebeen significantly changed with the inclusion of these g14 asymmetries.

  4. Martineau, Harriet. - Mistry, Rohinton. - Peacock, Thomas Love

    OpenAIRE

    Beck, Rudolf

    2002-01-01

    Martineau, Harriet. - Mistry, Rohinton. - Peacock, Thomas Love. - In: Metzler-Lexikon englischsprachiger Autorinnen und Autoren / hrsg. von Eberhard Kreutzer ... - Stuttgart u.a. : Metzler, 2002. - S. 384, 405 f., 452 f.

  5. Caribbean ST Thomas trap Logbook Survey (Vessels)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains catch (landed catch) and effort for fishing trips made by vessels fishing in St. Thomas. The catch and effort data for the entire trip are...

  6. Professionaalne marketing - edu pant / Thomas Westerberg

    Index Scriptorium Estoniae

    Westerberg, Thomas

    1999-01-01

    Majanduslanguse perioodil tuleb fokusseerida oma plaanid tulevikku, sel perioodil avalduvad turundusjuhtide tõelised ja varjatud professionaalsed oskused. Thomas Westerbergi, Coca-Cola Baltic Beverages Ltd. tegevdirektori ettekanne Majanduskonverentsil "Kuidas olla edukas majanduslanguse perioodil"

  7. Obituary: Thomas Robert Metcalf, 1961-2007

    Science.gov (United States)

    Leka, K. D.

    2007-12-01

    The astronomy community lost a good friend when Tom Metcalf was killed in a skiing accident on Saturday, 7 July 2007, in the mountains near Boulder, Colorado. Tom was widely known for prolific work on solar magnetic fields, hard-X-ray imaging of solar flares, and spectral line diagnostics. He was often characterized as "one of the nicest guys in science." Born October 5, 1961 in Cheverly, Maryland, to Fred and Marilyn, Thomas R. Metcalf joined his sister, Karen, two years his elder, in a close family that loved sailing, inquisitiveness, and the natural world. Sibling rivalry (usually a Tonka truck intruding on Barbie's sub-table "castle") melted when Tom and Karen collaborated on elaborately engineered room-sized blanket-forts. Tom confidently signed up at age of three to crew for his family's sailboat; when the family moved to California in 1966, as Tom's father took a Professor of Mathematics position at the University of California Riverside, Tom's love for sailing was well-established. Week-long cruises or short trips in the harbor were all fun; when school friends came aboard, it was even better--if "only slightly too crowded" from the adults' points of view. Tom's introduction to astronomy began one cold, very clear, December night in the early 1970s, on a family camping trip to Death Valley. The "Sidewalk Astronomers of San Francisco" had lined the sidewalk near the visitors' center with all sorts of telescopes for public viewing. Soon after, Tom and his boyhood friend Jim O'Linger were building their own scopes, attending "Amateur Telescope Makers" conferences, and Tom was setting up his scope on a sidewalk for public viewing. In 1986, Tom set up his telescope on the bluffs above Dana Point Harbor, and gave numerous strangers a stunning view of Halley's Comet. His interest in physics and mathematics became evident during Tom's last years in high school (Poly High in Riverside), and as a senior he qualified to take freshman Physics at the University of

  8. Thomas Fermi model of finite nuclei

    International Nuclear Information System (INIS)

    Boguta, J.; Rafelski, J.

    1977-01-01

    A relativistic Thomas-Fermi model of finite-nuclei is considered. The effective nuclear interaction is mediated by exchanges of isoscalar scalar and vector mesons. The authors include also a self-interaction of the scalar meson field and the Coulomb repulsion of the protons. The parameters of the model are constrained by the average nuclear properties. The Thomas-Fermi equations are solved numerically for finite, stable nuclei. The particular case of 208 82 Pb is considered in more detail. (Auth.)

  9. NOAA TIFF Image - 30m Rugosity, Charleston Bump - Deep Coral Priority Areas - Thomas Jefferson - (2007), UTM 17N NAD83

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains a unified GeoTiff with 30x30 meter cell size representing the bathymetry of the Charleston Bump off of the South Atlantic Bight, derived from...

  10. Pearl Harbor Biological Survey

    Science.gov (United States)

    1974-08-30

    Pearl Harbor also receives Irrigation tailgate waters from the Oahu Sug- ar Company, Industrial waste waters from the Prlmo Brewery , and heated waters...34Observations of the Cell Structure of Salt Fingers", J. Fluid Mech. 41:4, pp 707-719. ~) 3.3-79 ,’:•.-. ^ IV s’V- EFFECTS OF SHIP ACTIVITY Paul L...anticyclonic) death assemblage - in this report, an assemblage (q.v.) of remains (such as shells or bones ) from a naturally occurring association of living

  11. A Relational Database Model for Managing Accelerator Control System Software at Jefferson Lab

    International Nuclear Information System (INIS)

    Sally Schaffner; Theodore Larrieu

    2001-01-01

    The operations software group at the Thomas Jefferson National Accelerator Facility faces a number of challenges common to facilities which manage a large body of software developed in-house. Developers include members of the software group, operators, hardware engineers and accelerator physicists.One management problem has been ensuring that all software has an identified owner who is still working at the lab. In some cases, locating source code for ''orphaned'' software has also proven to be difficult. Other challenges include ensuring that working versions of all operational software are available, testing changes to operational software without impacting operations, upgrading infrastructure software (OS, compilers, interpreters, commercial packages, share/freeware, etc), ensuring that appropriate documentation is available and up to date, underutilization of code reuse, input/output file management,and determining what other software will break if a software package is upgraded. This paper will describe a relational database model which has been developed to track this type of information and make it available to managers and developers.The model also provides a foundation for developing productivity-enhancing tools for automated building, versioning, and installation of software. This work was supported by the U.S. DOE contract No. DE-AC05-84ER40150

  12. High luminosity operation of large solid angle scintillator arrays in Jefferson Lab Hall A

    International Nuclear Information System (INIS)

    Ran Shneor

    2003-01-01

    This thesis describes selected aspects of high luminosity operation of large solid angle scintillator arrays in Hall A of the CEBAF (Central Electron Beam Accelerator Facility) at TJNAF (Thomas Jefferson National Accelerator Facility ). CEBAF is a high current, high duty factor electron accelerator with a maximum beam energy of about 6 GeV and a maximum current of 200 (micro)A. Operating large solid angle scintillator arrays in high luminosity environment presents several problems such as high singles rates, low signal to noise ratios and shielding requirements. To demonstrate the need for large solid angle and momentum acceptance detectors as a third arm in Hall A, we will give a brief overview of the physics motivating five approved experiments, which utilize scintillator arrays. We will then focus on the design and assembly of these scintillator arrays, with special focus on the two new detector packages built for the Short Range Correlation experiment E01-015. This thesis also contains the description and results of different tests and calibrations which where conducted for these arrays. We also present the description of a number of tests which were done in order to estimate the singles rates, data reconstruction, filtering techniques and shielding required for these counters

  13. An Overview of Dark Matter Experiments at Jefferson Lab

    International Nuclear Information System (INIS)

    Boyce, James R

    2012-01-01

    Dark Matter research at Jefferson Lab started in 2006 with the LIght Pseudoscalar and Scalar Search (LIPSS) collaboration to check the validity of results reported by the PVLAS collaboration. In the intervening years interest in dark matter laboratory experiments has grown at Jefferson Lab. Current research underway or in planning stages probe various mass regions covering 14 orders of magnitude: from 10 −6 eV to 100 MeV. This presentation will be an overview of our dark matter searches, three of which focus on the hypothesized A' gauge boson.

  14. Letter from Thomas Moran to Ferdinand Hayden and Paintings by Thomas Moran

    Science.gov (United States)

    Potter, Lee Ann; Eder, Elizabeth K.; Hussey, Michael

    2012-01-01

    Medical doctor and geologist Dr. Ferdinand Vandiveer Hayden selected more than 30 scientists, technical personnel, and artists, including photographer William Henry Jackson and painter Thomas Moran, to join the survey of the Yellowstone region in northwest Wyoming territory. Thomas Moran was an accomplished artist when he joined the survey to…

  15. Pipe failure probability - the Thomas paper revisited

    International Nuclear Information System (INIS)

    Lydell, B.O.Y.

    2000-01-01

    Almost twenty years ago, in Volume 2 of Reliability Engineering (the predecessor of Reliability Engineering and System Safety), a paper by H. M. Thomas of Rolls Royce and Associates Ltd. presented a generalized approach to the estimation of piping and vessel failure probability. The 'Thomas-approach' used insights from actual failure statistics to calculate the probability of leakage and conditional probability of rupture given leakage. It was intended for practitioners without access to data on the service experience with piping and piping system components. This article revisits the Thomas paper by drawing on insights from development of a new database on piping failures in commercial nuclear power plants worldwide (SKI-PIPE). Partially sponsored by the Swedish Nuclear Power Inspectorate (SKI), the R and D leading up to this note was performed during 1994-1999. Motivated by data requirements of reliability analysis and probabilistic safety assessment (PSA), the new database supports statistical analysis of piping failure data. Against the background of this database development program, the article reviews the applicability of the 'Thomas approach' in applied risk and reliability analysis. It addresses the question whether a new and expanded database on the service experience with piping systems would alter the original piping reliability correlation as suggested by H. M. Thomas

  16. Grays Harbor Paper

    Energy Technology Data Exchange (ETDEWEB)

    Quigg, B. [Grays Harbor Paper, Hoquiam, WA (United States)

    2009-07-01

    Wood waste biomass boilers are used at Grays Harbor Paper in Hoquiam, Washington. This presentation showed that large volumes of biomass are left after a traditional clearcut. The opportunities and challenges of collecting branches, tops and stumps from this wet coastal climate were outlined. The paper described some of the low-tech methods for picking up branches, stumps and woody debris. It included several photographs of custom logging machines for timber harvest, including a brush grapple slasher, a shearer shovel, chippers, grinders, slicesaws, trucks, trailers and caterpillar log loaders for handling slash. The slash recovery program relies on innovative harvesting machines that convert scattered logging slash into bundles that can be easily collected, transported, and stored for use in existing facilities that utilize wood fiber for fuel. figs.

  17. A Proposed Incentive System for Jefferson County Teachers.

    Science.gov (United States)

    Schlechty, Phillip C.; Ingwerson, Donald W.

    1987-01-01

    Outlines a teacher incentive plan developed for the Jefferson County (Kentucky) Public Schools and scheduled for pilot testing during the 1987-88 school year. The program is modeled after airline frequent flyer programs and is designed to encourage cooperative action and individual incentive among teachers. (MD)

  18. Dylan Thomas's "25 Poems": Paradox as Structure

    Science.gov (United States)

    Bharadwaj, S.

    2014-01-01

    Irony, inclusiveness, and complexity are the chief criteria of value in the twentieth century intellectual poetry. These criteria, however, do not merely indicate qualities of craftsmanship; they reflect a sensibility, a particular way of experiencing reality. What really distinguishes Dylan Thomas is a capacity for self-analysis, a capacity for…

  19. Teaching the "Leviathan": Thomas Hobbes on Education

    Science.gov (United States)

    Bejan, Teresa M.

    2010-01-01

    This paper considers Thomas Hobbes's educational thought both in its historical context and in the context of his political philosophy as a whole. It begins with Hobbes's diagnosis of the English Civil War as the product of the miseducation of the commonwealth and shows that education was a central and consistent concern of his political theory…

  20. Thomas Aquinas on Contingency of Nature

    Czech Academy of Sciences Publication Activity Database

    Dvořák, Petr

    2008-01-01

    Roč. 5, č. 2 (2008), s. 185-196 ISSN 1214-8407 R&D Projects: GA AV ČR(CZ) IAA900090602 Institutional research plan: CEZ:AV0Z90090514 Keywords : Thomas Aquinas * determinism * contingency Subject RIV: AA - Philosophy ; Religion

  1. Physical Holonomy, Thomas Precession, and Clifford Algebra

    International Nuclear Information System (INIS)

    Urbantke, H.

    1988-01-01

    After a general discussion of the physical significance of holonomy group transformations, a relation between the transports of Fermi-Walker and Levi-Civita in Special Relativity is pointed out. A well-known example -the Thomas-Wigner angle - is rederived in a completely frame-independent manner using Clifford algebra. 14 refs. (Author)

  2. New Jersey's Thomas Edison and the fluoroscope.

    Science.gov (United States)

    Tselos, G D

    1995-11-01

    Thomas Edison played a major role in the development of early x-ray technology in 1896, notably increasing tube power and reliability and making the fluoroscope a practical instrument. Eventually, Edison would move x-ray technology from the laboratory to the marketplace.

  3. A Model Technology Educator: Thomas A. Edison

    Science.gov (United States)

    Pretzer, William S.; Rogers, George E.; Bush, Jeffery

    2007-01-01

    Reflecting back over a century ago to the small village of Menlo Park, New Jersey provides insight into a remarkable visionary and an exceptional role model for today's problem-solving and design-focused technology educator: Thomas A. Edison, inventor, innovator, and model technology educator. Since Edison could not simply apply existing knowledge…

  4. Thomas-Fermi model of warm nuclei

    International Nuclear Information System (INIS)

    Buchler, J.R.; Epstein, R.I.

    1980-01-01

    The average nuclear level density of spherical nuclei is computed with a finite temperature Thomas-Fermi model. More than 80% of the low energy nuclear excitations can be accounted for in terms of this statistical model. The relevance for stellar collapse is discussed

  5. Thomas Piketty and the Justice of Education

    Science.gov (United States)

    Bøyum, Steinar

    2016-01-01

    Thomas Piketty's "Capital in the Twenty-First Century" is best known for its documentation of increasing social inequality, but it also has a notable normative aspect. Although Piketty is far less clear on the normative level than on the empirical, his view of justice can be summarised as meritocratic luck egalitarianism. This leads him…

  6. FOREWORD: Jefferson Lab: A Long Decade of Physics

    Science.gov (United States)

    Montgomery, Hugh

    2011-04-01

    Jefferson Lab Jefferson Lab was created in 1984 and started operating in about 1996. 2011 is an appropriate time to try to take a look at the results that have appeared, what has been learned, and what has been exciting for our scientific community. Rather than attempt to construct a coherent view with a single author or at least a small number, we have, instead, invited small groups of people who have been intimately involved in the work itself to make contributions. These people are accelerator experts, experimentalists and theorists, staff and users. We have, in the main, sought reviews of the actual sub-fields. The primary exception is the first paper, which sets the scene as it was, in one person's view, at the beginning of Jefferson Lab. In reviewing the material as it appeared, I was impressed by the breadth of the material. Major advances are documented from form factors to structure functions, from spectroscopy to physics beyond the standard model of nuclear and particle physics. Recognition of the part played by spin, the helicities of the beams, the polarizations of the targets, and the polarizations of final state particles, is inescapable. Access to the weak interaction amplitudes through measurements of the parity violating asymmetries has led to quantification of the strange content of the nucleon and the neutron radius of lead, and to measurements of the electroweak mixing angle. Lattice QCD calculations flourished and are setting the platform for understanding of the spectroscopy of baryons and mesons. But the star of the game was the accelerator. Its performance enabled the physics and also the use of the technology to generate a powerful free electron laser. These important pieces of Jefferson Lab physics are given their place. As the third Director of Jefferson Lab, and on behalf of the other physicists and others presently associated with the lab, I would like to express my admiration and gratitude for the efforts of the directors, chief

  7. LiDAR Relative Reflectivity Surface (2011) for the St. Thomas East End Reserve, St. Thomas

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This image represents a LiDAR (Light Detection & Ranging) 0.3x0.3 meter resolution relative seafloor reflectivity surface for the St. Thomas East End Reserve...

  8. Relativistic effects in the Thomas--Fermi atom

    International Nuclear Information System (INIS)

    Waber, J.T.; Canfield, J.M.

    1975-01-01

    Two methods of applying relativistic corrections to the Thomas--Fermi atom are considered, and numerical calculations are discussed. Radial charge distributions calculated from a relativistic Thomas--Fermi equation agree in gross form with those from more complicated self-consistent calculations. Energy eigenvalues for mercury, as determined from the relativistic Thomas--Fermi solution, are compared with other calculated and experimental values

  9. 76 FR 26223 - Petition for Rulemaking Submitted by Thomas Popik

    Science.gov (United States)

    2011-05-06

    ... Rulemaking Submitted by Thomas Popik AGENCY: Nuclear Regulatory Commission. ACTION: Petition for rulemaking... filed with the NRC by Thomas Popik. The petition was docketed by the NRC on March 15, 2011, and has been... received a petition for rulemaking on March 14, 2011 (PRM- 50-96). The petition was submitted by Mr. Thomas...

  10. Device Configuration Handler for Accelerator Control Applications at Jefferson Lab

    International Nuclear Information System (INIS)

    Bickley, Matt; Chevtsov, P.; Larrieu, T.

    2003-01-01

    The accelerator control system at Jefferson Lab uses hundreds of physical devices with such popular instrument bus interfaces as Industry Pack (IPAC), GPIB, RS-232, etc. To properly handle all these components, control computers (IOCs) must be provided with the correct information about the unique memory addresses of the used interface cards, interrupt numbers (if any), data communication channels and protocols. In these conditions, the registration of a new control device in the control system is not an easy task for software developers. Because the device configuration is distributed, it requires the detailed knowledge about not only the new device but also the configuration of all other devices on the existing system. A configuration handler implemented at Jefferson Lab centralizes the information about all control devices making their registration user-friendly and very easy to use. It consists of a device driver framework and the device registration software developed on the basis of ORACLE database and freely available scripting tools (perl, php)

  11. Polarized Source Performance and Developments at Jefferson Lab

    International Nuclear Information System (INIS)

    Matt Poelker; P. Adderley; J. Clark; A. Day; Joseph Grames; J. Hansknecht; P. Hartmann; R. Kazimi; P. Rutt; Charles Sinclair; M. Steigerwald

    2000-01-01

    The polarized photoinjector at Jefferson Lab continues to provide high average current, high polarization, high quality beam to nuclear physics Users in as many as three endstations simultaneously. Long lifetime operation has been obtained from two identical polarized guns. A new high power mode locked Ti-sapphire laser has been constructed to enhance the effective operating lifetime of the photoinjector. Efforts to enhance beam polarization and reduced helicity correlated beam systematic effects are underway

  12. Alaska Harbor Seal Glacial Surveys

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Floating glacial ice serves as a haul-out substrate for a significant number (10-15%) of Alaskan harbor seals, and thus surveying tidewater glacial fjords is an...

  13. Electromagnetic calorimeter for the Heavy Photon Search Experiment at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Buchanan, Emma [Univ. of Glasgow, Scotland (United Kingdom)

    2014-11-01

    The Heavy Photon Search Experiment (HPS) seeks to detect a hypothesised hidden sector boson, the A', predicted to be produced in dark matter decay or annihilation. Theories suggest that the A' couples weakly to electric charge through kinetic mixing, allowing it, as a result, to decay to Standard Matter (SM) lepton pair, which may explain the electron and positron excess recently observed in cosmic rays. Measuring the lepton pair decay of the A' could lead to indirect detection of dark matter. The HPS experiment is a fixed target experiment that will utilize the electron beam produced at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). The detector set-up includes a silicon vertex tracker (SVT) and an Electromagnetic Calorimeter (ECal). The ECal will provide the trigger and detect e+e- pairs and its construction and testing forms the focus of this thesis. The ECal consists of 442 PbWO4- tapered crystals with a length 16cm and a 1.6x1.6cm2 cross-section, stacked into a rectangular array and are coupled to Large Area APDs and corresponding pre-amplifiers. Supplementary to the ECal is a Light Monitoring System (LMS) consisting of bi-coloured LEDs that will monitor changes in APD gain and crystal transparency due to radiation damage. Before construction of the ECal each of the components were required to be individually tested to determine a number of different characteristics. Irradiation tests were performed on PbWO4 ECal crystals and, as a comparison, one grown by a different manufacturer to determine their radiation hardness. A technique for annealing the radiation damage by optical bleaching, which involves injecting light of various wavelengths into the crystal, was tested using the blue LED from the LMS as a potential candidate. The light yield dependence on temperature was also measured for one of the PbWO4 crystal types. Each APD was individually tested to determine if they

  14. Cholera in Thomas Mann's Death in Venice.

    Science.gov (United States)

    Rütten, Thomas

    2009-01-01

    The article sets the cholera motif in Thomas Mann's famous novella Death in Venice against the historical context from which it partially originates. It is shown that this motif, while undoubtedly appropriated to serve Mann's own poetic ends, has a solid grounding in historical and autobiographical fact, thus blurring the boundaries between fact and fiction. The article illustrates the verifiable events of the outbreak of the Venetian cholera epidemic in May 1911, which Mann partly witnessed himself, during a holiday trip to Brioni and Venice, and partly heard and read about. It is established that Thomas Mann's account of the cholera in Venice in his novella is characterised by a rare and almost preternatural insightfulness into an otherwise murky affair that was marked by rumours, speculations and denials.

  15. Thomas Young's contributions to geometrical optics.

    Science.gov (United States)

    Atchison, David A; Charman, W Neil

    2011-07-01

    In addition to his work on physical optics, Thomas Young (1773-1829) made several contributions to geometrical optics, most of which received little recognition in his time or since. We describe and assess some of these contributions: Young's construction (the basis for much of his geometric work), paraxial refraction equations, oblique astigmatism and field curvature, and gradient-index optics. © 2011 The Authors. Clinical and Experimental Optometry © 2011 Optometrists Association Australia.

  16. Geoscience rediscovers Phoenicia's buried harbors

    Science.gov (United States)

    Marriner, Nick; Morhange, Christophe; Doumet-Serhal, Claude; Carbonel, Pierre

    2006-01-01

    After centuries of archaeological debate, the harbors of Phoenicia's two most important city states, Tyre and Sidon, have been rediscovered, and including new geoarcheological results reveal how, where, and when they evolved after their Bronze Age foundations. The early ports lie beneath their present urban centers, and we have indentified four harbor phases. (1) During the Bronze Age, Tyre and Sidon were characterized by semi-open marine coves that served as protoharbors. (2) Biostratigraphic and lithostratigraphic data indicate the presence of early artificial basins after the first millennium B.C. (3) The harbors reached their apogees during the Greco-Roman and Byzantine periods. (4) Silting up and coastal progradation led to burial of the medieval basins, lost until now.

  17. The 4th Generation Light Source at Jefferson Lab

    International Nuclear Information System (INIS)

    Stephen Benson; George Biallas; James Boyce; Donald Bullard; James Coleman; David Douglas; H. Dylla; Richard Evans; Pavel Evtushenko; Albert Grippo; Christopher Gould; Joseph Gubeli; David Hardy; Carlos Hernandez-Garcia; Kevin Jordan; John Klopf; Steven Moore; George Neil; Thomas Powers; Joseph Preble; Daniel Sexton; Michelle Shinn; Christopher Tennant; Richard Walker; Shukui Zhang; Gwyn Williams

    2007-01-01

    A number of 'Grand Challenges' in Science have recently been identified in reports from The National Academy of Sciences, and the U.S. Dept. of Energy, Basic Energy Sciences. Many of these require a new generation of linac-based light source to study dynamical and non-linear phenomena in nanoscale samples. In this paper we present a summary of the properties of such light sources, comparing them with existing sources, and then describing in more detail a specific source at Jefferson Lab. Importantly, the JLab light source has developed some novel technology which is a critical enabler for other new light sources

  18. The CLAS12 Torus Detector Magnet at Jefferson Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Luongo, Cesar [Jefferson Lab; Ballard, Joshua [Jefferson Lab; Biallas, George [Jefferson Lab; Elouadrhiri, Latifa [Jefferson Lab; Fair, Ruben [Jefferson Lab; Ghoshal, Probir [Jefferson Lab; Kashy, Dave [Jefferson Lab; Legg, Robert [Jefferson Lab; Pastor, Orlando [Jefferson Lab; Rajput-Ghoshal, Renuka [Jefferson Lab; Rode, Claus [Jefferson Lab; Wiseman, Mark [Jefferson Lab; Young, Glenn [Jefferson Lab; Elementi, Luciano [Fermilab; Krave, Steven [Fermilab; Makarov, Alexander [Fermilab; Nobrega, Fred [Fermilab; Velev, George [Fermilab

    2015-12-17

    The CLAS12 Torus is a toroidal superconducting magnet, which is part of the detector for the 12-GeV accelerator upgrade at Jefferson Laboratory (JLab). The coils were wound/fabricated by Fermilab, with JLab responsible for all other parts of the project scope, including design, integration, cryostating the individual coils, installation, cryogenics, I&C, etc. This paper provides an overview of the CLAS12 Torus magnet features and serves as a status report of its installation in the experimental hall. Completion and commissioning of the magnet is expected in 2016.

  19. Studies of the neutron spin structure at Jefferson Lab

    International Nuclear Information System (INIS)

    Korsch, W.

    2003-01-01

    The polarized 3 He program of Hall A at Jefferson Lab will be described. Results on the generalized Gerasimov-Drell-Hearn integral for the neutron in a Q 2 range between 0.02 GeV 2 /c 2 2 2 /c 2 will be presented. Preliminary results of the virtual photon asymmetry A 1 n (x,Q 2 ) and the spin structure function g 2 n (x,Q 2 ) at large values of Bjorken x and low Q 2 , respectively, will be discussed. (orig.)

  20. Moeller polarimeter in the hall a jefferson lab after reconstruction

    International Nuclear Information System (INIS)

    Pomatsalyuk, R.I.

    2016-01-01

    The Moller polarimeter in the Hall A of Jefferson Lab was reconstructed in order to expand of the energy range of the polarimeter to measure the polarization of the electron beam with an energy up to 11.5 GeV. The paper de-scribes the main results of the Moller polarimeter testing after reconstruction. The measurements of the electrons polarization were provided by two data acquisition systems operating in parallel. The testing of the shielding insertion of magnetic dipole has been performed. The way to eliminate detected deviations in the operation of polarimeter during test is shown.

  1. St. Thomas and the hilemorfic ontology

    Directory of Open Access Journals (Sweden)

    Lawrence Dewan, O.P.

    2009-06-01

    Full Text Available This article presents the relevancy of Aristotle’s hylemorphic ontology.Aristotle himself highlighted the importance and astonishing complexityof the problem of prime matter’s ontological status and he presenting thesolution in his doctrine of hylemorphism. As Saint Thomas Aquinasnoted, it is a crucial issue for philosophy because all four, hilemorfism,logic, physics and metaphysics, stand or fall depending on a correctunderstanding of the ontology of prime matter and of the kind of causalrelationship which exist between prime matter and substantial form ingenerable and corruptible substance.

  2. On the Symbolism of Thomas Mann

    Directory of Open Access Journals (Sweden)

    Vasily M. Tolmatchoff

    2017-09-01

    Full Text Available The essay discusses Thomas Mann’s symbolism and its parameters as well as Mann’s interpretation of the crisis of European spiritual values. Тhe author examines the role of Nietzsche in Mann’s heritage as well as interconnections between Mann and Wilde, Mann and Gide. Buddenbrooks is interpreted as a novel about the end of the German Renaissance; duality of the modern artist is shown on the example of “Tonio Kröger” while the paradoxes of his eroticism are analyzed on the example of “Der Tod in Venedig.”

  3. Pilgrim Souvenir: Ampulla of Thomas Becket

    Directory of Open Access Journals (Sweden)

    Amy Jeffs

    2017-06-01

    Full Text Available This tin ampulla was probably purchased by a pilgrim near the shrine of St Thomas Becket in Canterbury. It is designed to contain holy water and be hung around the neck on a cord. Measuring 100 by 87 millimetres, it is in the form of a narrow, pointed vessel surrounded by an openwork penannular frame and would have been rapidly slush-cast, in one go, in a three-part mould. A date in the first half of the thirteenth century is probable based on the style of the military figures’ armour and the archaeological contexts of stylistically similar ampullae.

  4. Pilgrim Souvenir: Ampulla of Thomas Becket

    OpenAIRE

    Amy Jeffs

    2017-01-01

    This tin ampulla was probably purchased by a pilgrim near the shrine of St Thomas Becket in Canterbury. It is designed to contain holy water and be hung around the neck on a cord. Measuring 100 by 87 millimetres, it is in the form of a narrow, pointed vessel surrounded by an openwork penannular frame and would have been rapidly slush-cast, in one go, in a three-part mould. A date in the first half of the thirteenth century is probable based on the style of the military figures’ armour and the...

  5. The convenient myth of Thomas Szasz.

    Science.gov (United States)

    Buchanan-Barker, P; Barker, P

    2009-02-01

    Thomas Szasz's original critique of the concept of 'mental illness' is almost 50 years old. Over that half century Szasz has maintained a consistent campaign against the 'Therapeutic State', challenging the paternalism of coercive psychiatry and defending liberty and autonomy. Despite his widespread celebrity Szasz continues to be misread and misrepresented. In this paper we review some of Szasz's key ideas, in the light of Clarke's recent critique, setting this within the context of 'mental health nursing' and the problems in living affecting persons worldwide.

  6. Limitations of the Porter-Thomas distribution

    Science.gov (United States)

    Weidenmüller, Hans A.

    2017-12-01

    Data on the distribution of reduced partial neutron widths and on the distribution of total gamma decay widths disagree with the Porter-Thomas distribution (PTD) for reduced partial widths or with predictions of the statistical model. We recall why the disagreement is important: The PTD is a direct consequence of the orthogonal invariance of the Gaussian Orthogonal Ensemble (GOE) of random matrices. The disagreement is reviewed. Two possible causes for violation of orthogonal invariance of the GOE are discussed, and their consequences explored. The disagreement of the distribution of total gamma decay widths with theoretical predictions cannot be blamed on the statistical model.

  7. Localized Donaldson-Thomas theory of surfaces

    DEFF Research Database (Denmark)

    Gholampour, Amin; Sheshmani, Artan; Yau, Shing-Tung

    2017-01-01

    Let S be a projective simply connected complex surface and  be a line bundle on S. We study the moduli space of stable compactly supported 2-dimensional sheaves on the total spaces of . The moduli space admits a ℂ∗-action induced by scaling the fibers of . We identify certain components of the......  is the canonical bundle of S, the Vafa-Witten invariants defined recently by Tanaka-Thomas, can be extracted from these localized DT invariants. VW invariants are expected to have modular properties as predicted by S-duality....

  8. Thomas Edison’s Poetry Machine

    OpenAIRE

    Rubery, Matthew

    2014-01-01

    The tradition of spoken-word recording began with Thomas Edison’s invention of the phonograph. Hence, this article makes the case that 1878 is a more important year to the history of literature than has yet been recognized for its experiments with verse and sound-recording technology. Although the tinfoil phonograph’s first decade has been well documented by media historians, literary critics have singled out 1888 as the noteworthy year since that is when Edison’s improved phonograph made it ...

  9. Principal Component Surface (2011) for St. Thomas East End Reserve, St. Thomas

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This image represents a 0.3x0.3 meter principal component analysis (PCA) surface for areas the St. Thomas East End Reserve (STEER) in the U.S. Virgin Islands (USVI)....

  10. Precision Electron Beam Polarimetry in Hall C at Jefferson Lab

    Science.gov (United States)

    Gaskell, David

    2013-10-01

    The electron beam polarization in experimental Hall C at Jefferson Lab is measured using two devices. The Hall-C/Basel Møller polarimeter measures the beam polarization via electron-electron scattering and utilizes a novel target system in which a pure iron foil is driven to magnetic saturation (out of plane) using a superconducting solenoid. A Compton polarimeter measures the polarization via electron-photon scattering, where the photons are provided by a high-power, CW laser coupled to a low gain Fabry-Perot cavity. In this case, both the Compton-scattered electrons and backscattered photons provide measurements of the beam polarization. Results from both polarimeters, acquired during the Q-Weak experiment in Hall C, will be presented. In particular, the results of a test in which the Møller and Compton polarimeters made interleaving measurements at identical beam currents will be shown. In addition, plans for operation of both devices after completion of the Jefferson Lab 12 GeV Upgrade will also be discussed.

  11. Thomas Linacre at the University of Padua.

    Science.gov (United States)

    Porzionato, Andrea; Macchi, Veronica; De Caro, Raffaele

    2010-11-01

    The Bo (meaning 'ox' in the Venetian dialect) is the historic seat of the University of Padua, founded in 1222. A full-length portrait of Thomas Linacre stands in its prestigious Sala dei Quaranta (Hall of the Forty), so called because of the portraits of forty great foreign scholars of the University, painted by Giacomo dal Forno in 1942. Thomas Linacre came to Italy in 1485, following an embassy by Henry VII to the Vatican. Linacre visited Bologna, Florence, Rome, Venice, Vicenza and Padua, where he took his degree in medicine in 1496 with great distinction. During his stay in Italy he met illustrious humanists and physicians, including Poliziano, Hermolaus Barbarus and Aldus Manutius Romanus, and Nicolaus Leonicenus who further stimulated him to the translation of classic works by Hippocrates and Galen. In 1518 Linacre played a pivotal role in the foundation of the Royal College of Physicians in London which, as first President, he organized on the basis of Italian models. With his portrait, the University of Padua celebrates the life and work of an astonishing figure linking the Italian and English medical cultures.

  12. 78 FR 20314 - Jefferson Island Storage & Hub, L.L.C.; Notice of Filing

    Science.gov (United States)

    2013-04-04

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. PR13-44-000] Jefferson Island Storage & Hub, L.L.C.; Notice of Filing Take notice that on March 28, 2013, Jefferson Island Storage & Hub, L.L.C. filed to revise its Statement of Operating Conditions to among others, update...

  13. 77 FR 19967 - Safety Zone, Port of Dutch Harbor; Dutch Harbor, AK

    Science.gov (United States)

    2012-04-03

    ...-AA00 Safety Zone, Port of Dutch Harbor; Dutch Harbor, AK AGENCY: Coast Guard, DHS. ACTION: Notice of proposed rulemaking. SUMMARY: The Coast Guard proposes temporary safety zones in the Port of Dutch Harbor... Dutch Harbor, Alaska, and the adjacent territorial sea due to additional vessel traffic associated with...

  14. Army Engineers at Pearl Harbor

    Science.gov (United States)

    2011-01-01

    siblings, he was the grandson of David Belden Lyman—a Christian missionary from New England who settled in the Hilo , Hawaii area—and the descendent of...of Hawaii appeared over Oahu. Some headed for Ameri- can warships at Pearl Harbor and the planes on the ground at nearby Hickam Field; oth- ers...hit Schofield Barracks, Wheeler Field, and Bellows Field. USACE in Hawaii con- sisted of Soldier-engineers in the Army’s Hawaiian Depart- ment and

  15. Bathymetry (2011) of the St. Thomas East End Reserve

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This image represents a LiDAR (Light Detection & Ranging) 0.3x0.3 meter resolution depth surface for the St. Thomas East End Reserve (STEER), St. Thomas in the...

  16. A token of individuality : Questiones libri Porphirii by Thomas Manlevelt

    NARCIS (Netherlands)

    Helm, Alfred Charles van der

    2012-01-01

    This is a critical edition with introduction and indices of the Questiones libri Porphirii, a commentary on Porphyry’s Isagoge attributed to the fourteenth-century logician Thomas Manlevelt. Not much is known about Thomas Manlevelt, but his work is remarkable enough. Following in the footsteps of

  17. The Structure and Function of Male Thomas Langur Loud Calls

    NARCIS (Netherlands)

    Wich, Serge Alexander

    2002-01-01

    This study has addressed the acoustical structure of male loud calls and their function in Thomas langur social organisation. Thomas langurs are medium sized primate that lives in Sumatra, Indonesia. Ome of the characteristics of this species is the loud call of males. Several functions for loud

  18. Student Rights, Clarence Thomas, and the Revolutionary Vision of Education

    Science.gov (United States)

    Warnick, Bryan R.; Rowe, Bradley; Kim, Sang Hyun

    2009-01-01

    In his concurring opinion to the 2007 U.S. Supreme Court decision, "Morse v. Frederick," Justice Clarence Thomas argues that the "Tinker" decision, which granted students constitutional rights in public schools, should be overturned on originalist grounds. In this essay, Bryan Warnick, Bradley Rowe, and Sang Hyun Kim make the case that Thomas's…

  19. Praost Thomas Vaga 70 / Juhan Simonson ; foto: Juhan Simonson

    Index Scriptorium Estoniae

    Simonson, Juhan, 1933-2012

    2008-01-01

    8. märtsil 70 aastaseks saavast üle 20 aasta kirikuõpetajana New Jerseys ja New Yorgis teeninud praost Thomas Vagast. President Toomas Hendrik Ilves annetas iseseisvuspäeva puhul Thomas Vagale kui eestluse hoidjale Ameerika Ühendriikides ja kirikuelu edendajale Valgetähe IV klassi teenetemärgi

  20. Orthophoto Mosaic (2012) of the St. Thomas East End Reserve

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This 0.3x0.3 meter imagery mosaic of the St. Thomas East End Reserve (STEER), St. Thomas in the U.S. Virgin Islands was created by the National Oceanic and...

  1. Thomas Gordon's Communicative Pedagogy in Modern Educational Realities

    Science.gov (United States)

    Leshchenko, Maria; Isaieva, Svitlana

    2014-01-01

    In the article the principles, strategies, methods, techniques of communicative pedagogy of American scientist Thomas Gordon and system components of effective communication training for parents, teachers and administrators are enlightened. It has been determined that the main principle of Thomas Gordon's pedagogy is an interactive way of knowing…

  2. 75 FR 4061 - Favinger, Thomas; Notice of Filing

    Science.gov (United States)

    2010-01-26

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. ID-6223-000] Favinger, Thomas; Notice of Filing January 19, 2010. Take notice that on January 15, 2010, Mr. Thomas G. Favinger filed an application for authority to hold interlocking positions, pursuant to section 305(b) of the...

  3. 75 FR 68350 - Fischer, Thomas J.; Notice of Filing

    Science.gov (United States)

    2010-11-05

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. ID-6422-000] Fischer, Thomas J.; Notice of Filing October 29, 2010. Take notice that on October 29, 2010, Thomas J. Fischer filed an Application for Authorization to Hold Interlocking Positions as Director of Wisconsin Electric...

  4. 76 FR 9012 - Favinger, Thomas G.; Notice of Filing

    Science.gov (United States)

    2011-02-16

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. ID-6223-002] Favinger, Thomas G.; Notice of Filing Take notice that on January 31, 2011 Thomas G. Favinger submitted for filing, an application for authority to hold interlocking positions, pursuant to Section 305(b) of the...

  5. Jefferson Lab IR demo FEL photocathode quantum efficiency scanner

    CERN Document Server

    Gubeli, J; Grippo, A; Jordan, K; Shinn, M; Siggins, T

    2001-01-01

    Jefferson Laboratory's Free Electron Laser (FEL) incorporates a cesiated gallium arsenide (GaAs) DC photocathode gun as its electron source. By using a set of scanning mirrors, the surface of the GaAs wafer is illuminated with a 543.5nm helium-neon laser. Measuring the current flow across the biased photocathode generates a quantum efficiency (QE) map of the 1-in. diameter wafer surface. The resulting QE map provides a very detailed picture of the efficiency of the wafer surface. By generating a QE map in a matter of minutes, the photocathode scanner has proven to be an exceptional tool in quickly determining sensitivity and availability of the photocathode for operation.

  6. The 12 GeV Upgrade at Jefferson Lab

    International Nuclear Information System (INIS)

    Rolf Ent

    2002-01-01

    There has been a remarkable fruitful evolution of our picture of the behavior of strongly interacting matter during the almost two decades that have passed since the parameters of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab were defined. These advances have revealed important new experimental questions best addressed by a CEBAF-class machine at higher energy. Fortunately, favorable technical developments coupled with foresight in the design of the facility make it feasible to triple (double) CEBAF's design (achieved) beam energy from 4 (6) GeV to 12 GeV, in a cost-effective manner: the Upgrade can be realized for about 15% of the cost of the initial facility. This Upgrade would enable the worldwide community to greatly expand its physics horizons. In addition to in general improving the figure of merit and momentum transfer range of the present Jefferson Lab physics program, raising the energy of the accelerator to 12 GeV opens up two main new areas of physics: (1) It allows direct exploration of the quark-gluon structure of hadrons and nuclei in the ''valence quark region''. It is known that inclusive electron scattering at the high momentum and energy transfers available at 12 GeV is governed by elementary interactions with quarks and, indirectly, gluons. The original CEBAF energy is not adequate to study this critical region, while with continuous 12 GeV beams one can cleanly access the entire ''valence quark region'' and exploit the newly discovered Generalized Parton Distributions. In addition, a 12-GeV Jefferson Lab can essentially complete the studies of the transition from hadronic to quark-gluon degrees of freedom. (2) It allows crossing the threshold above which the origins of quark confinement can be investigated. Specifically, 12 GeV will enable the production of certain ''exotic'' mesons. Whereas in the QCD region of asymptotic freedom ample evidence for the role of gluons exist through the observation of gluon jets

  7. Residual Resistance Data from Cavity Production Projects at Jefferson Lab

    International Nuclear Information System (INIS)

    Ciovati, Gianluigi; Geng, Rongli; Mammosser, John; Saunders, Jeffrey

    2010-01-01

    A fundamental limitation towards achieving high quality factors in superconducting radio-frequency cavities is the so-called residual resistance. Understanding and controlling the residual resistance has important implications towards improving the efficiency and reduce the operating cost of continuous wave superconducting linear accelerators. In this contribution we will report on the residual resistance values obtained from measurements of the quality factor of a large set of cavities, with resonant frequency between 805 MHz and 1.5 GHz, all of them processed and tested at Jefferson Lab. Surface treatments included both buffered chemical polishing and electropolishing. The results indicate an approximate value of the residual resistance of about 7-10 n Omega.

  8. Deeply Virtual Compton Scattering Studies at Jefferson Lab

    International Nuclear Information System (INIS)

    Sabatie, F.

    2010-11-01

    This document describes the early experimental effort at Jefferson Lab to unravel the Generalized Parton Distributions (GPD), using the Deeply Virtual Compton Scattering (DVCS) process. The GPDs contain the usual form factors and parton distribution functions, but in addition, they include correlations between states of different longitudinal and transverse momenta. They therefore give access to a three-dimensional picture of the nucleon. DVCS is the cleanest process allowing to extract GPDs, and as early as 2000, a number of experiments were proposed for this purpose. The results of the first exploratory experiments are presented as well as the first measurements of linear combinations of GPDs. In addition, a thorough discussion on the insights gained from these early experiments is proposed, linked with the theoretical tools used to extract GPDs from DVCS data. Finally, improvements on what was done for this first experimental phase are proposed and discussed, and new proposals and measurements are described. (author)

  9. Study of CSR Effects in the Jefferson Laboratory FEL Driver

    Energy Technology Data Exchange (ETDEWEB)

    Hall, C. C. [Colorado State U.; Biedron, S. [Colorado State U.; Burleson, Theodore A. [Colorado State U.; Milton, Stephen V. [Colorado State U.; Morin, Auralee L. [Colorado State U.; Benson, Stephen V. [JLAB; Douglas, David R. [JLAB; Evtushenko, Pavel E. [JLAB; Hannon, Fay E. [JLAB; Li, Rui [JLAB; Tennant, Christopher D. [JLAB; Zhang, Shukui [JLAB; Carlsten, Bruce E. [LANL; Lewellen, John W. [LANL

    2013-08-01

    In a recent experiment conducted on the Jefferson Laboratory IR FEL driver the effects of Coherent Synchrotron Radiation (CSR) on beam quality were studied. The primary goal of this work was to explore CSR output and effect on the beam with variation of the bunch compression in the IR chicane. This experiment also provides a valuable opportunity to benchmark existing CSR models in a system that may not be fully represented by a 1-D CSR model. Here we present results from this experiment and compare to initial simulations of CSR in the magnetic compression chicane of the machine. Finally, we touch upon the possibility for CSR induced microbunching gain in the magnetic compression chicane, and show that parameters in the machine are such that it should be thoroughly damped.

  10. High resolution hypernuclear spectroscopy at Jefferson Lab Hall A

    International Nuclear Information System (INIS)

    Garibaldi, F.; Bydžovský, P.; Cisbani, E.; Cusanno, F.; De Leo, R.; Frullani, S.; Iodice, M.; LeRose, J.J.; Markowitz, P.; Millener, D.J.; Urciuoli, G.M.

    2013-01-01

    The characteristics of the Jefferson Lab electron beam, together with those of the experimental equipment, offer a unique opportunity to study hypernuclear spectroscopy via electromagnetic induced (e,e ′ K + ) reactions. Experiment 94-107 started a systematic study on 1p-shell targets, 12 C, 9 Be and 16 O. For 12 C for the first time measurable strength in the core-excited part of the spectrum between the ground state and the p state was shown in the 12 Λ B spectrum. For 16 O a high-quality 16 Λ N spectrum was produced for the first time with sub-MeV energy resolution. A very precise Λ binding energy value for 16 Λ N, calibrated against the elementary (e,e ′ K + ) reaction on hydrogen, has also been obtained. Preliminary data on the 9 Λ Li spectrum shows some disagreement in strength for the second and third doublet with respect to the theory

  11. SANE Of Jefferson Lab: Spin Asymmetries on the Nucleon Experiment

    International Nuclear Information System (INIS)

    Ahmidouch, Abdellah

    2011-01-01

    The Spin Asymmetry on the Nucleon Experiment (SANE) at Jefferson Lab measures proton spin observables A 1 p , A 2 p and structure functions g 1 p and g 2 p over a broad range of Bjorken scaling variable x from 0.3 to 0.8, for four-momentum transfers ranging from 2.5 GeV 2 to 6.5 GeV 2 . Inclusive double spin asymmetries were measured by scattering 4.7 and 5.9-GeV longitudinally polarized electron beam off a polarized solid NH 3 target, in both parallel and near-perpendicular configuration. Scattered electrons were detected using a novel non-magnetic detector array with 194-msr acceptance. This paper presents the physics motivation for the experiment, the detector performance, and the latest status of the ongoing data analysis.

  12. Sobre o desejo em Thomas Hobbes

    Directory of Open Access Journals (Sweden)

    Fernando Rodrigues Montes D'Oca

    2011-01-01

    Full Text Available O objetivo deste artigo é explicar o papel do desejo na filosofia política do filósofo inglês Thomas Hobbes. Para tanto, o presente estudo propõe-se apresentar: i. a razão por que Hobbes reivindica o desejo à política, i.a tratando da teoria da conservação do movimento, de Galileu Galilei, e i.b da felicidade como um sucesso contínuo na obtenção dos objetos de desejo; e ii. o papel do desejo no estado de natureza, já que este é determinante tanto para ii.a a entrada do homem no estado de guerra quanto ii.b para a saída deste estado.

  13. Thomas K. Jeffers: pioneer of coccidiosis research.

    Science.gov (United States)

    Chapman, H D

    2012-01-01

    Thomas K. Jeffers has made many significant contributions to our understanding of the biology of the parasite Eimeria, the cause of coccidiosis in poultry. His work has had direct practical application for the control of this widespread disease. Topics discussed include Jeffers' pioneering work concerned with genetics of the host response to infection, the nature of biological and immunological intraspecific variation, drug resistance and discovery, field surveys of resistance, and his most recognized achievement-the demonstration that the lifecycle of coccidia may be altered by artificial selection. Parasites so modified are attenuated but retain their immunogenicity, a discovery that has led to the development of live vaccines that are inherently non-pathogenic. This article provides a brief biography and describes the contributions that Jeffers has made to our knowledge of coccidiosis.

  14. [Thomas Schwencke and Wolfgang Amadeus Mozart].

    Science.gov (United States)

    Hillen, Harry F P

    2010-01-01

    Thomas Schwencke (1694-1767) was Professor of Anatomy and Surgery and Lecturer in Obstetrics at the Surgical School in The Hague, the Netherlands. In 1743 he published the very first textbook on haematology. Furthermore, he described his observations on the variolation of smallpox, and published the design of a new obstetric instrument. Schwencke was physician of the city of The Hague and also physician at the court of the princes van Nassau-Weilburg. In 1765 Princess Caroline of Nassau-Weilburg invited the young Wolfgang Amadeus Mozart to perform concerts. During his Dutch tour the young Mozart fell seriously ill, probably from typhoid fever. At the request of the court Mozart was seen for a second opinion and thereafter successfully treated by Schwencke. Mozart could continue his concert tour and Schwencke's reputation as Mozart's physician was established.

  15. Thomas precession: correct and incorrect solutions

    International Nuclear Information System (INIS)

    Malykin, Grigorii B

    2006-01-01

    A wealth of different expressions for the frequency of the Thomas precession (TP) can be found in the literature, with the consequence that this issue has been discussed over a long period of time. It is shown that the correct result was obtained in the works of several authors, which were published more than forty years ago but remained unnoticed against the background of numerous erroneous works. Several TP-related physical paradoxes formulated primarily to disprove the special relativity theory are shown to be fallacious. Different techniques for deriving the correct expression are considered and the reasons for the emergence of the main incorrect expressions for the TP frequency are analyzed. (from the history of physics)

  16. Q & A with Ed Tech Leaders: Interview with Curtis J. Bonk, Mimi Miyoung Lee, Thomas C. Reeves, & Thomas H. Reynolds

    Science.gov (United States)

    Viner, Mark; Gardner, Ellen; Shaughnessy, Michael F.

    2016-01-01

    Curtis J. Bonk, is Professor of Instructional Systems Technology at Indiana University and President of CourseShare. Mimi Miyoung Lee is Associate Professor in the Department of Curriculum and instruction at the University of Houston. Thomas C. Reeves is Professor Emeritus of Learning, Design, and Technology at the University of Georgia. Thomas H.…

  17. 33 CFR 125.15 - Access to waterfront facilities, and port and harbor areas, including vessels and harbor craft...

    Science.gov (United States)

    2010-07-01

    ..., and port and harbor areas, including vessels and harbor craft therein. 125.15 Section 125.15....15 Access to waterfront facilities, and port and harbor areas, including vessels and harbor craft....09 to those waterfront facilities, and port and harbor areas, including vessels and harbor craft...

  18. 78 FR 33051 - Non-Rock Alternatives to Shoreline Protection Demonstration Project (LA-16) Iberia, Jefferson...

    Science.gov (United States)

    2013-06-03

    ... DEPARTMENT OF AGRICULTURE Natural Resources Conservation Service Non-Rock Alternatives to...-Rock Alternatives to Shoreline Protection Demonstration Project (LA-16), Iberia, Jefferson, and... and environmental limitations preclude the use of rock structures. The shoreline protection systems...

  19. Thomas Piketty’s capitalism revisited

    Directory of Open Access Journals (Sweden)

    Milovanović Milić

    2015-01-01

    Full Text Available Thomas Piketty’s international best selling Capital in the Twenty-First Century lays out his theory of a long-run rise in income inequality under capitalism. It is written as a manifesto urging reintegration of social sciences. A number of reviewers judged it on ideological grounds, labeling it either as a revolution in economic thinking, or dismissing it offhandedly. Piketty’s theory of rising inequality is based on the two Fundamental Laws of Capitalism, developed after the Solow growth model. However, this model is inconsistent with Piketty’s own characterization of modern capitalism. Moreover, his sole justification for the constant discrepancy between rate of return and rate of income growth (r > g is based on the high elasticity of substitution between capital and labor. However, that is just one factor that can have an influence on factor income shares. By failing to offer a consistent theory of rising inequality, his piece can hardly be considered as a useful founding stone for a new social science.

  20. The nuclear Thomas-Fermi model

    International Nuclear Information System (INIS)

    Myers, W.D.; Swiatecki, W.J.

    1994-08-01

    The statistical Thomas-Fermi model is applied to a comprehensive survey of macroscopic nuclear properties. The model uses a Seyler-Blanchard effective nucleon-nucleon interaction, generalized by the addition of one momentum-dependent and one density-dependent term. The adjustable parameters of the interaction were fitted to shell-corrected masses of 1654 nuclei, to the diffuseness of the nuclear surface and to the measured depths of the optical model potential. With these parameters nuclear sizes are well reproduced, and only relatively minor deviations between measured and calculated fission barriers of 36 nuclei are found. The model determines the principal bulk and surface properties of nuclear matter and provides estimates for the more subtle, Droplet Model, properties. The predicted energy vs density relation for neutron matter is in striking correspondence with the 1981 theoretical estimate of Friedman and Pandharipande. Other extreme situations to which the model is applied are a study of Sn isotopes from 82 Sn to 170 Sn, and the rupture into a bubble configuration of a nucleus (constrained to spherical symmetry) which takes place when Z 2 /A exceeds about 100

  1. Improved thomas formula for radon measurement

    International Nuclear Information System (INIS)

    Ji Changsong

    1991-06-01

    The FT 648 type portable absolute radon meter has been developed and the designing principle of this instrument is introduced. The absolute radon meter differs from relative radon meter. By using structure parameters, operating parameters and readout of this instrument, the radon content of measured gas is obtained directly without calibration in advance. Normally, the calibration is done by a standard radioactive gaseous source of which the radon concentration is known. The systematic error is removed by adding filter-efficiency Σ, α self-absorption correction β, energy spectrum correction S, geometric factor Ω of probe and gravity dropping correction factor G to the Thomas formula for radon measurement of two-filter method. The atmosphere radon content, which is given in hour-average, in Beijing area was measured by FT 648 type absolute radon meter. The measurement lasted continuously for several days and nights and a 'saddle shape' of radon content-time curve was observed. The day's average radon content was 8.5 Bq·m -3

  2. Thomas J. Ahrens (1936-2010)

    Science.gov (United States)

    Jeanloz, Raymond

    2011-03-01

    Thomas J. Ahrens, a leader in the study of high-pressure shock wave and planetary impact phenomena, died at his home in Pasadena, Calif., on 24 November 2010 at the age of 74. He was the California Institute of Technology's Fletcher Jones Professor of Geophysics, emeritus since 2005 but professionally active to the end. He had been president of AGU's Tectonophysics section, editor of Journal of Geophysical Research, founding member of both the Mineral and Rock Physics and Study of the Earth's Deep Interior focus groups, and editor—more like key driving force—for AGU's Handbook of Physical Constants. Tom was a pioneer in experimental and numerical studies of the effects of projectiles hitting a target at velocities exceeding the speed of sound (hypervelocity impact), arguably the most important geophysical process in the formation, growth, and, in many cases, surface evolution of planets. As a professor at Caltech, he established the foremost university laboratory for shock wave experiments, where students and research associates from around the world pursued basic research in geophysics, planetary science, and other disciplines. Previously, high-pressure shock experiments were conducted primarily in national laboratories, where they were initially associated with the development of nuclear weapons.

  3. Health Care Ergonomics: Contributions of Thomas Waters.

    Science.gov (United States)

    Poole Wilson, Tiffany; Davis, Kermit G

    2016-08-01

    The aim of this study was to assess the contributions of Thomas Waters's work in the field of health care ergonomics and beyond. Waters's research of safe patient handling with a focus on reducing musculoskeletal disorders (MSDs) in health care workers contributed to current studies and prevention strategies. He worked with several groups to share his research and assist in developing safe patient handling guidelines and curriculum for nursing students and health care workers. The citations of articles that were published by Waters in health care ergonomics were evaluated for quality and themes of conclusions. Quality was assessed using the Mixed Methods Appraisal Tool and centrality to original research rating. Themes were documented by the type of population the citing articles were investigating. In total, 266 articles that referenced the top seven cited articles were evaluated. More than 95% of them were rated either medium or high quality. The important themes of these citing articles were as follows: (a) Safe patient handling is effective in reducing MSDs in health care workers. (b) Shift work has negative impact on nurses. (c) There is no safe way to manually lift a patient. (d) Nurse curriculums should contain safe patient handling. The research of Waters has contributed significantly to the health care ergonomics and beyond. His work, in combination with other pioneers in the field, has generated multiple initiatives, such as a standard safe patient-handling curriculum and safe patient-handling programs. © 2016, Human Factors and Ergonomics Society.

  4. Thomas Walter Bannerman Kibble (1932 - 2016)

    CERN Document Server

    2016-01-01

    Tom Kibble, an internationally-renowned theoretical physicist, passed away on Thursday 2 June.   Tom Kibble in the CMS cavern during a visit to CERN in 2014. (Photo: CMS/CERN) Professor Thomas Walter Bannerman Kibble passed away unexpectedly on 2 June at the age of 83. He was senior research investigator at the Blackett Laboratory and Emeritus Professor of Theoretical Physics at Imperial College, London. He made seminal contributions to our current understanding of symmetries and symmetry breaking in the Standard Model of particle physics. He was among those who, in 1964, proposed the mechanism of spontaneous symmetry breaking in gauge theories, together with G. Guralnik and C. Hagen in the autumn of that year, following the papers by R. Brout and F. Englert and by P. Higgs. When this new understanding was incorporated into a model proposed by S. Glashow in 1961, it led to the first formulations of the Standard Model by S. Weinberg and A. Salam. Kibble deepened our under...

  5. Thomas Edison’s Poetry Machine

    Directory of Open Access Journals (Sweden)

    Matthew Rubery

    2014-04-01

    Full Text Available The tradition of spoken-word recording began with Thomas Edison’s invention of the phonograph. Hence, this article makes the case that 1878 is a more important year to the history of literature than has yet been recognized for its experiments with verse and sound-recording technology. Although the tinfoil phonograph’s first decade has been well documented by media historians, literary critics have singled out 1888 as the noteworthy year since that is when Edison’s improved phonograph made it possible to record prominent figures including Alfred Tennyson and Robert Browning. Taking Edison’s original tinfoil phonograph as an alternative starting point reveals how the 1878 phonograph demonstrations, despite technological limitations, undertook acoustic experiments that enabled audiences to discern new forms of meaning, pleasure, and pathos in even the most well-known material. The recordings considered here include ‘Mary Had a Little Lamb’ as well as scripts by Tennyson, Caroline Norton, Edgar Allan Poe, Shakespeare, and others. Such recitals illustrate the extent to which Edison’s talking machine influenced the reception of texts while at the same time giving rise to performances unheard of in previous cultures.

  6. The Nuclear Thomas-Fermi Model

    Science.gov (United States)

    Myers, W. D.; Swiatecki, W. J.

    1994-08-01

    The statistical Thomas-Fermi model is applied to a comprehensive survey of macroscopic nuclear properties. The model uses a Seyler-Blanchard effective nucleon-nucleon interaction, generalized by the addition of one momentum-dependent and one density-dependent term. The adjustable parameters of the interaction were fitted to shell-corrected masses of 1654 nuclei, to the diffuseness of the nuclear surface and to the measured depths of the optical model potential. With these parameters nuclear sizes are well reproduced, and only relatively minor deviations between measured and calculated fission barriers of 36 nuclei are found. The model determines the principal bulk and surface properties of nuclear matter and provides estimates for the more subtle, Droplet Model, properties. The predicted energy vs density relation for neutron matter is in striking correspondence with the 1981 theoretical estimate of Friedman and Pandharipande. Other extreme situations to which the model is applied are a study of Sn isotopes from {sup 82}Sn to {sup 170}Sn, and the rupture into a bubble configuration of a nucleus (constrained to spherical symmetry) which takes place when Z{sup 2}/A exceeds about 100.

  7. KONSTRUKSI TEORI PARADIGMA THOMAS S. KUHN

    Directory of Open Access Journals (Sweden)

    Nurkhalis Nurkhalis

    2012-02-01

    Full Text Available Thomas Kuhn memberikan gambaran bahwa kebenaran sains akan ditemukan berkali-kali ataupun berganti-ganti bentuk ilmiahnya walaupun dari satu objek yang sama. Formulasi teori paradigma yang mencetuskan bahwa sebuah kebenaran sains (legatimed truth identik dalam target teleologis yang didasari pada detection dikenal sebagai final cause (end. Kebenaran sains bukan continuous (lanjutan, improvisasi, evolusi atau kumulatif, melainkan terjadi paradigm shift (pergeseran paradigma atau disebut juga dengan revolusi. Paradigma melalui shift moving (pergerakan pergeseran dipahami sama dengan gestalt switch (perpindahan secara keseluruhan atau tidak sama sekali. Di dalam gestalt switch yang diungkapkan adalah verifikasi terjadi sekaligus atau tidak sama sekali (all at once or not at all. Konsep paradigm shifts membuka kesadaran bersama bahwa para pengkaji sains tidak akan mungkin bekerja dalam suatu suasana objektivitas yang mapan. Paradigma men-design kerangka world view (pandangan dunia atau perspective (cara pandang untuk lebih important, legitimate, and reasonable. Hal ini membuat sebuah detection (target teleologis tidak akan terevolusi atau tereleminir karena kemampuan eksperimentalnya mengakomodir counterinstances (ketahanan berkompetisi teori. Paradigma yang bertahan merupakan winnowing (keunggulan baru dari sebuah discovery, supertitian (temuan besar atau novelty (terbaharukan. Paradigma bertahan akan tumbuh menguasai normal science selama belum eksisnya anomaly (ketimpangan. Paradigma baru memiliki kriteria neater (rapi, more suitable (lebih cocok, simpler (sederhana, or more elegant (lebih elegan. Paradigma akan terusbertransformatif dengan paradigma baru karena sistem bekerja paradigma mengalihkan padigma menuju revolusi ilmiah di mana revolusi ilmiah dengan perubahan fundamental akan meresap dalam metode dan pemahaman.

  8. Digital Data for Volcano Hazards in the Mount Jefferson Region, Oregon

    Science.gov (United States)

    Schilling, S.P.; Doelger, S.; Walder, J.S.; Gardner, C.A.; Conrey, R.M.; Fisher, B.J.

    2008-01-01

    Mount Jefferson has erupted repeatedly for hundreds of thousands of years, with its last eruptive episode during the last major glaciation which culminated about 15,000 years ago. Geologic evidence shows that Mount Jefferson is capable of large explosive eruptions. The largest such eruption occurred between 35,000 and 100,000 years ago. If Mount Jefferson erupts again, areas close to the eruptive vent will be severely affected, and even areas tens of kilometers (tens of miles) downstream along river valleys or hundreds of kilometers (hundreds of miles) downwind may be at risk. Numerous small volcanoes occupy the area between Mount Jefferson and Mount Hood to the north, and between Mount Jefferson and the Three Sisters region to the south. These small volcanoes tend not to pose the far-reaching hazards associated with Mount Jefferson, but are nonetheless locally important. A concern at Mount Jefferson, but not at the smaller volcanoes, is the possibility that small-to-moderate sized landslides could occur even during periods of no volcanic activity. Such landslides may transform as they move into lahars (watery flows of rock, mud, and debris) that can inundate areas far downstream. The geographic information system (GIS) volcano hazard data layer used to produce the Mount Jefferson volcano hazard map in USGS Open-File Report 99-24 (Walder and others, 1999) is included in this data set. Both proximal and distal hazard zones were delineated by scientists at the Cascades Volcano Observatory and depict various volcano hazard areas around the mountain.

  9. CRSMP Potential Harbor Borrow Sites 2012

    Data.gov (United States)

    California Natural Resource Agency — Harbor locations as identified originally in the California Shoreline Database compiled by Noble Consultants (Jon Moore) for California Department of Boating and...

  10. Evolution of the Generic Lock System at Jefferson Lab

    International Nuclear Information System (INIS)

    Brian Bevins; Yves Roblin

    2003-01-01

    The Generic Lock system is a software framework that allows highly flexible feedback control of large distributed systems. It allows system operators to implement new feedback loops between arbitrary process variables quickly and with no disturbance to the underlying control system. Several different types of feedback loops are provided and more are being added. This paper describes the further evolution of the system since it was first presented at ICALEPCS 2001 and reports on two years of successful use in accelerator operations. The framework has been enhanced in several key ways. Multiple-input, multiple-output (MIMO) lock types have been added for accelerator orbit and energy stabilization. The general purpose Proportional-Integral-Derivative (PID) locks can now be tuned automatically. The generic lock server now makes use of the Proxy IOC (PIOC) developed at Jefferson Lab to allow the locks to be monitored from any EPICS Channel Access aware client. (Previously clients had to be Cdev aware.) The dependency on the Qt XML parser has been replaced with the freely available Xerces DOM parser from the Apache project

  11. Polarized positrons in Jefferson lab electron ion collider (JLEIC)

    Science.gov (United States)

    Lin, Fanglei; Grames, Joe; Guo, Jiquan; Morozov, Vasiliy; Zhang, Yuhong

    2018-05-01

    The Jefferson Lab Electron Ion Collider (JLEIC) is designed to provide collisions of electron and ion beams with high luminosity and high polarization to reach new frontier in exploration of nuclear structure. The luminosity, exceeding 1033 cm-2s-1 in a broad range of the center-of-mass (CM) energy and maximum luminosity above 1034 cm-2s-1, is achieved by high-rate collisions of short small-emittance low-charge bunches with proper cooling of the ion beam and synchrotron radiation damping of the electron beam. The polarization of light ion species (p, d, 3He) and electron can be easily preserved, manipulated and maintained by taking advantage of the unique figure-8 shape rings. With a growing physics interest, polarized positron-ion collisions are considered to be carried out in the JLEIC to offer an additional probe to study the substructure of nucleons and nuclei. However, the creation of polarized positrons with sufficient intensity is particularly challenging. We propose a dedicated scheme to generate polarized positrons. Rather than trying to accumulate "hot" positrons after conversion, we will accumulate "cold" electrons before conversion. Charge accumulation additionally provides a novel means to convert high repetition rate (>100 MHz) electron beam from the gun to a low repetition rate (<100 MHz) positron beam for broad applications. In this paper, we will address the scheme, provide preliminary estimated parameters and explain the key areas to reach the desired goal.

  12. Jefferson Lab mass storage and file replication services

    International Nuclear Information System (INIS)

    Bird, I.; Chen, Y.; Hess, B.; Kowalski, A.; Watson, C.

    2001-01-01

    Jefferson Lab has implemented a scalable, distributed, high performance mass storage system-JASMine. The system is entirely implemented in Java, provides access to robotic tape storage and includes disk cache and stage manager components. The disk manager subsystem may be used independently to manage stand-alone disk pools. The system includes a scheduler to provide policy-based access to the storage systems. Security is provided by pluggable authentication modules and it implemented at the network socket level. The tape and disk cache systems have well defined interfaces in order to provide integration with grid-based services. The system is in production and being used to archive 1 TB per day from the experiments, and currently moves over 2 TB per day total. The authors will describe the architecture of JASMine; discuss the rationale for building the system, and present a transparent 3 rd party file replication service to move data to collaborating institutes using JASMine, XML, and servlet technology interfacing to grid-based file transfer mechanisms

  13. Operating experience with superconducting cavities at Jefferson Lab

    International Nuclear Information System (INIS)

    Reece, C.E.

    1998-01-01

    The CEBAF recirculating superconducting electron linac at Jefferson Lab is now in full operation supporting nuclear physics experiments in three target halls at up to 4.4 GeV. The 330 SRF cavities, operating at 2.0 K, continue to perform well above design specifications, and have accumulated over 8,000,000 operating cavity hours. The authors have to date no evidence of degradation of cavity performance. The SRF cavities have demonstrated excellent reliability. The one klystron per cavity design provides CEBAF with flexibility and redundancy for normal operations. Several techniques have been developed for establishing optimum operating conditions for the 330 independent systems. Operation of the cavities and control systems at the full design current of 1 mA has recently been achieved. The principal constraints on usable gradient for low current operations are (1) discharge at the cold ceramic rf window induced by electron field emission in cavities, (2) tuner controls, and (3) stability of the waveguide vacuum in the region between the warm and cold windows. Several cryomodules have been improved by application of rf helium processing while installed on the beamline

  14. Low Level RF System for Jefferson Lab Cryomodule Test Facility

    International Nuclear Information System (INIS)

    Tomasz Plawski; Trent Allison; Jean Delayen; J. Hovater; Thomas Powers

    2003-01-01

    The Jefferson Lab Cryomodule Test Facility (CMTF) has been upgraded to test and commission SNS and CEBAF Energy Upgrade cryomodules. Part of the upgrade was to modernize the superconducting cavity instrumentation and control. We have designed a VXI based RF control system exclusively for the production testing of superconducting cavities. The RF system can be configured to work either in Phase Locked Loop (PLL) or Self Excited Loop (SEL) mode. It can be used to drive either SNS 805 MHz or CEBAF Energy Upgrade 1497 MHz superconducting cavities and can be operated in pulsed or continuous wave (CW) mode. The base design consists of RF-analog and digital sections. The RF-analog section includes a Voltage Control Oscillator (VCO), phase detector, IandQ modulator and ''low phase shift'' limiter. The digital section controls the analog section and includes ADC, FPGA, and DAC . We will discuss the design of the RF system and how it relates to the support of cavity testing

  15. Electron-electron Thomas peak in fast transfer ionization

    International Nuclear Information System (INIS)

    Tolmanov, S. G.; McGuire, J. H.

    2000-01-01

    ''Thomas process'' is a name used for a family of singular two-step processes that can lead to electron transfer. The Thomas process of the ''second kind,'' occurring in reactions with both transfer and ionization, utilizes the e-e scattering in the second step, so this Thomas process requires the dynamics of the electron-electron interaction. We calculate numerically the second order element of an S matrix and corresponding cross sections for the transfer ionization process. We find that the position and shape of the Thomas peak depend on both electron-electron and the electron-nucleus interaction. Also the direct and exchange amplitudes are equal at the peak position. We test the peaking approximation used for transfer ionization. Our results can be compared to experimental results for p + +He→H+He 2+ +e - . (c) 2000 The American Physical Society

  16. Thomas Mofolo: the man, the writer and his contexts

    African Journals Online (AJOL)

    higher studies through the Protestant PEMS Mission, Thomas grabbed this ... main centres of power in the greater Caledon River valley after 1828, and many ..... Other Christians, such as Anna 'Mantsopa Makhetha, continued faithfully to carry.

  17. Thomas Mofolo's sentence design in Chaka approached in translation

    African Journals Online (AJOL)

    Thomas Mofolo's sentence design in Chaka approached in translation. ... by responding to several compelling questions, ranging from how five translators of the work approached it in their respective languages ... AJOL African Journals Online.

  18. Surveys in 1961 on St. Thomas & St. Croix

    DEFF Research Database (Denmark)

    Dahl, Thorkel; Licht, Kjeld de Fine

    Registration of towns and buildings erected during the Danish reign of the Caribbean Isles of St. Thomas, St. Jan and St. Croix 1671-1917 (now belonging to the USA under the name of Virgin Islands)....

  19. Caribbean ST Thomas all gears Logbook Survey (Vessels)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains catch (landed catch) and effort for fishing trips made by vessels fishing in St. Thomas. The catch and effort data for the entire trip are...

  20. St. Thomas and the Divine Origin of Law: Some Notes

    Directory of Open Access Journals (Sweden)

    Lawrence Dewan, O.P.

    2008-12-01

    Full Text Available This article presents a series of notes on the concept of Law and itsrelationship to God in Classical Antiquity, specifically taking into account the viewpoints of Aristotle and Saint Thomas Aquinas.

  1. Relativistic finite-temperature Thomas-Fermi model

    Science.gov (United States)

    Faussurier, Gérald

    2017-11-01

    We investigate the relativistic finite-temperature Thomas-Fermi model, which has been proposed recently in an astrophysical context. Assuming a constant distribution of protons inside the nucleus of finite size avoids severe divergence of the electron density with respect to a point-like nucleus. A formula for the nuclear radius is chosen to treat any element. The relativistic finite-temperature Thomas-Fermi model matches the two asymptotic regimes, i.e., the non-relativistic and the ultra-relativistic finite-temperature Thomas-Fermi models. The equation of state is considered in detail. For each version of the finite-temperature Thomas-Fermi model, the pressure, the kinetic energy, and the entropy are calculated. The internal energy and free energy are also considered. The thermodynamic consistency of the three models is considered by working from the free energy. The virial question is also studied in the three cases as well as the relationship with the density functional theory. The relativistic finite-temperature Thomas-Fermi model is far more involved than the non-relativistic and ultra-relativistic finite-temperature Thomas-Fermi models that are very close to each other from a mathematical point of view.

  2. 33 CFR 100.109 - Winter Harbor Lobster Boat Race, Winter Harbor, ME.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Winter Harbor Lobster Boat Race, Winter Harbor, ME. 100.109 Section 100.109 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.109 Winter Harbor...

  3. The Suez Canal and the petroleum harbors

    International Nuclear Information System (INIS)

    Anon.

    1997-01-01

    The Suez Canal is the second longest channel in the world and allows to save 60% of the travel time between the petroleum harbors of the Arabic peninsula and Europe. This short paper gives a summary of the main petroleum harbors activity along the channel from the Red sea to the Mediterranean sea. (J.S.)

  4. Thomas Pavel, Come ascoltare la letteratura? Thomas Pavel, Come ascoltare la letteratura? Thomas Pavel, How Can We Listen to Literature

    Directory of Open Access Journals (Sweden)

    Antonio Sotgiu

    2009-06-01

    Full Text Available Nella prolusione al suo corso al Collège de France, pronunciata il 6 aprile 2006, Thomas Pavel si interroga sugli aspetti emotivi ed etici dell'attività della lettura, sull'“abbandonarsi” di chi legge all'opera letteraria. Come avviene la trasfigurazione del quotidiano nel mondo finzionale? Come si svolge il processo di identificazione dell'io nell'opera? Lo studioso rintraccia il fondamento di tale processo nella non coincidenza di principio tra io e vita, quindi nella facoltà del lettore di accogliere e riconoscere il senso dell'opera. Un senso che tuttavia non si palesa una volta per tutte nella sua interezza e trasparenza, ma che diviene oggetto di continuo dialogo fra i lettori, un senso quindi affidato alle loro cure.During the opening lecture of his course at Collège de France, held on April 6th 2006, Thomas Pavel talks about the emotional and ethical aspects of reading and about «completely surrending» to literature. How is everyday life transfigured into poetic invention? How is our ego identified in the literary work? The scholar traces the origin of this process to the radically different principles governing ego and life. Because of this, the reader is able to grasp and understand the real meaning of the book. This, however, is never completely revealed in a clear way. Instead, it becomes the object of a never-ending dialogue among the readers: it is therefore their care the meaning is entrusted to.Во вступлении к своему курсу лекций во Французском Колледже, произнесенном 6-го апреля 2006-го года, Томас Павел размышляет о эмоциональных и этических сторонах чтения, о том, как читатель «отдается» литературному произведению. Как

  5. Depleted uranium human health risk assessment, Jefferson Proving Ground, Indiana

    International Nuclear Information System (INIS)

    Ebinger, M.H.; Hansen, W.R.

    1994-01-01

    The risk to human health from fragments of depleted uranium (DU) at Jefferson Proving Ground (JPG) was estimated using two types of ecosystem pathway models. A steady-state, model of the JPG area was developed to examine the effects of DU in soils, water, and vegetation on deer that were hunted and consumed by humans. The RESRAD code was also used to estimate the effects of farming the impact area and consuming the products derived from the farm. The steady-state model showed that minimal doses to humans are expected from consumption of deer that inhabit the impact area. Median values for doses to humans range from about 1 mrem (±2.4) to 0.04 mrem (±0.13) and translate to less than 1 x 10 -6 detriments (excess cancers) in the population. Monte Carlo simulation of the steady-state model was used to derive the probability distributions from which the median values were drawn. Sensitivity analyses of the steady-state model showed that the amount of DU in airborne dust and, therefore, the amount of DU on the vegetation surface, controlled the amount of DU ingested by deer and by humans. Human doses from the RESRAD estimates ranged from less than 1 mrem/y to about 6.5 mrem/y in a hunting scenario and subsistence fanning scenario, respectively. The human doses exceeded the 100 mrem/y dose limit when drinking water for the farming scenario was obtained from the on-site aquifer that was presumably contaminated with DU. The two farming scenarios were unrealistic land uses because the additional risk to humans due to unexploded ordnance in the impact area was not figured into the risk estimate. The doses estimated with RESRAD translated to less than 1 x 10 -6 detriments to about 1 x 10 -3 detriments. The higher risks were associated only with the farming scenario in which drinking water was obtained on-site

  6. NOAA TIFF Image - 50m Backscatter, Charleston Bump - Deep Coral Priority Areas - NOAA Ship Thomas Jefferson - (2007), UTM 17N NAD83

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains a unified GeoTiff with 30x30 meter cell size representing the backscatter intensity of the Charleston Bump off of the South Atlantic Bight,...

  7. NOAA TIFF Image - 30m Multibeam Bathymetry, Charleston Bump - Deep Coral Priority Areas - Thomas Jefferson - (2007), UTM 17N NAD83

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains a unified GeoTiff with 30x30 meter cell size representing the bathymetry of the Charleston Bump off of the South Atlantic Bight, derived from...

  8. NOAA TIFF Image - 30m Backscatter, Charleston Bump - Deep Coral Priority Areas - NOAA Ship Thomas Jefferson - (2007), UTM 17N NAD83

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains a unified GeoTiff with 30x30 meter cell size representing the backscatter intensity of the Charleston Bump off of the South Atlantic Bight,...

  9. NOAA TIFF Image - 30m Slope, South Atlantic Bight - Deep Coral Priority Areas - Thomas Jefferson - (2007), UTM 17N NAD83

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains a unified GeoTiff with 30x30 meter cell size representing the slope (in degrees) of the multibeam bathymetry of the Charleston Bump off of the...

  10. Quadrupole magnetic mapping of the high resolution spectrometers of Thomas Jefferson National Accelerator Laboratory, Hall A. (Q.M.M. project: Quadrupole Magnetic Measurement)

    International Nuclear Information System (INIS)

    Quemener, Gilles

    1997-01-01

    This thesis describes the magnetic measurements that have been performed on the superconducting quadrupoles of the High Resolution Spectrometers of TJNAF, Hall A (USA), which are designed to measure particle momentum up to 4 GeV.c -1 with a σp/p = 10 -4 resolution. The mapping method is based on rotating coil technique, the originality being a segmentation of the probe along the quad axis. Together with an accurate magnet modelling, the measurement of the flux variations through the set of rotating coils allows to determine the magnetic field at each point. We use the 3D field formalism, i.e., the Fourier-Bessel expansion of the field obtained by solving the Laplace equation. We describe the QMM method and then the apparatus consisting in two probes of length 1.6 m and 3.2 m built to map the three quadrupoles Q1, Q2, Q3. Data processing uses Fourier analysis. The mapping of the Electron Arm took place in situ in 1996. A first set of results concerns integral measurements including the properties of excitation cycle of the magnets (saturation and hysteresis). Second set of results in terms of local field yields the 3D field maps of the quadrupoles. After having applied corrections to the data we obtain a local field accuracy of 5 Gauss on each component, i.e. an uncertainty of 5.10 -4 relative to the quadrupole central field. We use SNAKE ray-tracing code with the implementation of QMM field maps and obtain preliminary results on HRS optics. (author)

  11. Multibeam collection for H11342: Multibeam data collected aboard Thomas Jefferson from 2004-05-01 to 2004-05-30, Galveston, TX to Galveston, TX

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  12. Multibeam collection for H11324: Multibeam data collected aboard Thomas Jefferson from 2004-04-01 to 2004-04-30, Galveston, TX to Galveston, TX

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  13. Museum security and the Thomas Crown Affair.

    Energy Technology Data Exchange (ETDEWEB)

    Michaud, E. C. (Nuclear Engineering Division)

    2010-01-01

    Over the years, I've daydreamed about stealing a Vermeer, a Picasso, or Rembrandt. It tickles me, as much as watching the reboot of The Thomas Crown Affair. Why is it, do you suppose, so much fun to think about stealing a world renowned piece off the wall of a major metropolitan museum? Is it the romantic thoughts of getting away with it, walking past infrared detectors, and pressure sensors ala Indiana Jones with the sack of sand to remove the idol without triggering the security system? Is it the idea of snatching items with such fantastic prices, where the romance of possessing an item of such value is less intoxicating than selling it to a private collector for it to never be seen again? I suspect others share my daydreams as they watch theater or hear of a brazen daylight heist at museums around the world, or from private collections. Though when reality sets in, the mind of the security professional kicks in. How could one do it, why would one do it, what should you do once it's done? The main issue a thief confronts when acquiring unique goods is how to process or fence them. They become very difficult to sell because they are one-of-a-kind, easy to identify, and could lead to the people involved with the theft. The whole issue of museum security takes up an ironic twist when one considers the secretive British street artist 'Banksy'. Banksy has made a name for himself by brazenly putting up interesting pieces of art in broad daylight (though many critics don't consider his work to be art) on building walls, rooftops, or even museums. I bring him up for a interesting take on what may become a trend in museum security. In March of 2005, Banksy snuck a piece of his called 'Vandalized Oil Painting' into the Brooklyn Museum's Great Historical Painting Wing, plus 3 other pieces into major museums in New York. Within several days, 2 paintings had been torn down, but 2 stayed up much longer. In his home country of the UK, a

  14. Iron status determination in pregnancy using the Thomas plot.

    Science.gov (United States)

    Weyers, R; Coetzee, M J; Nel, M

    2016-04-01

    Physiological changes during pregnancy affect routine tests for iron deficiency. The reticulocyte haemoglobin equivalent (RET-He) and serum-soluble transferrin receptor (sTfR) assay are newer diagnostic parameters for the detection of iron deficiency, combined in the Thomas diagnostic plot. We used this plot to determine the iron status of pregnant women presenting for their first visit to an antenatal clinic in Bloemfontein, South Africa. Routine laboratory tests (serum ferritin, full blood count and C-reactive protein) and RET-He and sTfR were performed. The iron status was determined using the Thomas plot. For this study, 103 pregnant women were recruited. According to the Thomas plot, 72.8% of the participants had normal iron stores and erythropoiesis. Iron-deficient erythropoiesis was detected in 12.6%. A third of participants were anaemic. Serum ferritin showed excellent sensitivity but poor specificity for detecting depleted iron stores. HIV status had no influence on the iron status of the participants. Our findings reiterate that causes other than iron deficiency should be considered in anaemic individuals. When compared with the Thomas plot, a low serum ferritin is a sensitive but nonspecific indicator of iron deficiency. The Thomas plot may provide useful information to identify pregnant individuals in whom haematologic parameters indicate limited iron availability for erythropoiesis. © 2015 John Wiley & Sons Ltd.

  15. Vivien Thomas (1910-1985): the backstage pioneer and educator.

    Science.gov (United States)

    Ng, Chin Ting Justin

    2014-06-01

    Vivien Thomas (1910-1985) was an African-American scientist, pioneer, and renowned educator. Thomas's contributions to cardiovascular surgery were unequivocal, and yet it was only after his death that he gained more widespread recognition. Thomas's more notable work involves aiding in the discovery of the cause of traumatic shock, designing and guiding the first operation to treat Tetralogy of Fallot, carrying out the first atrial septectomy, and helping develop the electrical defibrillator. Thomas struggled amidst the adversities of racism and the Great Depression (1929-1941), armed merely with a high school degree. Nevertheless, his genius and determination eventually led him to receive an honorary doctorate from John Hopkins University. His story inspired the creation of the award winning PBS documentary in 2003 Partners of the Heart and also the 2004 Emmy Award-winning HBO film Something the Lord Made. This article will aim to provide an overview to the more notable events in Thomas's amazing tale, with a particular focus on his work on the Tetralogy of Fallot.

  16. Transcription of Gail Jefferson, Boston University Conference on Ethnomethodology and Conversation Analysis, 9 June 1977

    DEFF Research Database (Denmark)

    Nevile, Maurice Richard

    2015-01-01

    This is a CLAN transcription of the film recording of a conference talk by Gail Jefferson in Boston in 1977. The film recording was generously made available by George Psathas, Emeritus Professor of Sociology at Boston University. Prof Doug Maynard (University of Wisconsin) arranged for the origi...... paralleling the talk’s content, under the heading ‘The Boston talk (as it never was)’ (p.2) - this would therefore seem to be adapted from Hopper’s transcription. So in my transcription I aim to give a clearer sense of the Boston talk as it actually was.......This is a CLAN transcription of the film recording of a conference talk by Gail Jefferson in Boston in 1977. The film recording was generously made available by George Psathas, Emeritus Professor of Sociology at Boston University. Prof Doug Maynard (University of Wisconsin) arranged...... for the original film recording to be digitised. Jefferson later developed elements of her 1977 talk into the paper ‘On the poetics of ordinary talk’ (Jefferson. G. 1996, in Text and Performance Quarterly, 16,1:1-61). An indication of the significance of the talk is given in that paper’s abstract, where Jefferson...

  17. Guest Foreword from Michael Thomas CMG QC

    Directory of Open Access Journals (Sweden)

    Michael Thomas

    2012-04-01

    precedents and thought in a unique legal market in which ideas drawn from Islamic law, civil law and common law can intermingle and blend. It is not surprising therefore to see that this new publication will be dedicated to the subject of international law, both public and private. Its laudable aim is to promote legal discourse around the world, and to promote a wider international understanding of contemporary legal issues for the common benefit. As an open access, bilingual journal, addressing topics concerning any jurisdiction, I hope it will reach a wide audience, and fulfil its aim of promoting understanding between different cultures. I am sure that the journal will not only benefit Qatar’s legal community by advancing academic and practice-based legal discussion. I am also confident that it will stimulate thought in the global legal community at large. May I wish it every success and a long life. Michael Thomas CMG QC

  18. Obituary: Thomas Michael Donahue, 1921-2004

    Science.gov (United States)

    Gombosi, Tamás I.

    2004-12-01

    Thomas M. Donahue, one of the nation's leading space and planetary scientists and a pioneer of space exploration, died Saturday October 16, 2004, from complications following heart surgery. The Edward H. White II Distinguished University Professor of Planetary Science at the University of Michigan, Tom shaped space exploration through his scientific achievements and policy positions. His work started with the first use of sounding rockets following World War II and continued for almost 60 years. Tom was born in Healdton, Oklahoma on May 23, 1921 to Robert Emmet and Mary (Lyndon) Donahue. His father was a plumber in the oil fields when Tom was born (Healdton OK was an oil town) and worked as a plumber in Kansas City for a time. Tom grew up in Kansas City, graduating in 1942 from Rockhurst College in that city with degrees in classics and physics. His graduate work in physics at Johns Hopkins University was interrupted by service in the Army Signal Corps. He obtained his PhD degree in atomic physics from Hopkins in the fall of 1947. After three years as a post-doctoral research associate and assistant professor at Hopkins, Tom joined the University of Pittsburgh Physics Department in 1951. At Pittsburgh he organized an atomic physics and atmospheric science program that led to experimental and theoretical studies of the upper atmosphere of the Earth and other solar system planets with instruments flown on sounding rockets and spacecraft. He became Professor of Physics in 1959 and eventually Director of the Laboratory for Atmospheric and Space Sciences and the Space Research Coordination Center at the University. In 1960 he spent a sabbatical year on a Guggenheim Fellowship at the Service d'Aeronomie in Paris, which began collaborations with French colleagues that flourished for more than 40 years. In 1974 he became the Chairman of the Atmospheric and Oceanic Science Department, University of Michigan, a position he held until 1981. In 1986, he was named the Henry

  19. Von Weizsaecker and exchange corrections in the Thomas Fermi theory

    International Nuclear Information System (INIS)

    Benguria, R.D.

    1979-01-01

    Two corrections to the Thomas-Fermi theory of atoms are studied. First the correction for exchange, that is the effect of the Pauli principle in the interaction energy, is considered. The defining variational problem is non-convex and standard technique to prove existence of a minimizing solution do not apply. Existence and uniqueness of solutions are established by convexifying or relaxing the energy functional. Properties of the minimizing solution are studied. A second correction due to von Weizsaecker is also discussed. Finally the dual principle to the Thomas-Fermi variational problem is studied (only in the neutral case). A dual principle is suggested for the ionic case. Also, a review of recent rigorous results concerning Thomas-Fermi theory is presented

  20. California: 'the Stem Cell State'. Interview with Jonathan Thomas.

    Science.gov (United States)

    Thomas, Jonathan

    2011-11-01

    We talked to Jonathan Thomas, newly elected Chairman of the California Institute for Regenerative Medicine (CIRM), a few weeks into a role he describes as "the opportunity of the lifetime" to find out what he sees as the key goals for the CIRM and why patient advocates are so critical to the future of the Institute. Jonathan Thomas was elected as Chairman of the California Institute for Regenerative Medicine (CIRM) in June 2011, succeeding the Founder and former Chairman, Bob Klein. Thomas has had a successful career in finance and law and is a Co-Founding Partner at Saybrook Capital, an investment banking and private equity firm. His commitment to patient advocacy and keen interest in biological sciences, developed as a Biology Major at Yale, led him to stand for Chairman.

  1. Genetics Home Reference: Floating-Harbor syndrome

    Science.gov (United States)

    ... Patton MA, Hurst J, Donnai D, McKeown CM, Cole T, Goodship J. Floating-Harbor syndrome. J Med ... medicine? What is newborn screening? New Pages Lyme disease Fibromyalgia White-Sutton syndrome All New & Updated Pages ...

  2. Final environmental impact statement supplement for wastewater management systems, North Jefferson County, Kentucky wastewater facilities

    International Nuclear Information System (INIS)

    1992-12-01

    The Final Environmental Impact Statement Supplement (FEISS) serves to update the wastewater treatment alternatives presented in the original EIS (The North County Area Environmental Impact Statement, Jefferson County, KY, July 1984), determine the best alternative, and compare that alternative to the Louisville and Jefferson County Metropolitan Sewer District's North County Action Plan (NCAP). The NCAP was determined to have the greatest cost effectiveness, lowest environmental impact, and best implementability and reliability and so is the preferred alternative in the FEISS. Significant environmental impacts of the alternative are described and mitigative measures discussed

  3. Recirculating Beam Breakup Study for the 12 GeV Upgrade at Jefferson Lab

    International Nuclear Information System (INIS)

    Shin, Ilkyoung; Satogata, Todd; Ahmed, Shahid; Bogacz, Slawomir; Stirbet, Mircea; Wang, Haipeng; Wang, Yan; Yunn, Byung; Bodenstein, Ryan

    2012-01-01

    Two new high gradient C100 cryomodules with a total of 16 new cavities were installed at the end of the CEBAF south linac during the 2011 summer shutdown as part of the 12-GeV upgrade project at Jefferson Lab. We surveyed the higher order modes (HOMs) of these cavities in the Jefferson Lab cryomodule test facility and CEBAF tunnel. We then studied recirculating beam breakup (BBU) in November 2011 to evaluate CEBAF low energy performance, measure transport optics, and evaluate BBU thresholds due to these HOMs. This paper discusses the experiment setup, cavity measurements, machine setup, optics measurements, and lower bounds on BBU thresholds by new cryomodules.

  4. Recirculating Beam Breakup Study for the 12 GeV Upgrade at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Ilkyoung Shin, Todd Satogata, Shahid Ahmed, Slawomir Bogacz, Mircea Stirbet, Haipeng Wang, Yan Wang, Byung Yunn, Ryan Bodenstein

    2012-07-01

    Two new high gradient C100 cryomodules with a total of 16 new cavities were installed at the end of the CEBAF south linac during the 2011 summer shutdown as part of the 12-GeV upgrade project at Jefferson Lab. We surveyed the higher order modes (HOMs) of these cavities in the Jefferson Lab cryomodule test facility and CEBAF tunnel. We then studied recirculating beam breakup (BBU) in November 2011 to evaluate CEBAF low energy performance, measure transport optics, and evaluate BBU thresholds due to these HOMs. This paper discusses the experiment setup, cavity measurements, machine setup, optics measurements, and lower bounds on BBU thresholds by new cryomodules.

  5. Empirically Determined Response Matrices for On-Line Orbit and Energy Correction at Jefferson Lab

    International Nuclear Information System (INIS)

    Leigh Harwood; Alicia Hofler; Michele Joyce; Valeri Lebedev; David Bryan

    2001-01-01

    Jefferson Lab uses feedback loops (less than 1 hertz update rate) to correct drifts in CEBAF's electron beam orbit and energy. Previous incarnations of these loops used response matrices that were computed by a numerical model of the machine. Jefferson Lab is transitioning this feedback system to use empirically determined response matrices whereby the software introduces small orbit or energy deviations using the loop's actuators and measures the system response with the loop's sensors. This method is in routine use for orbit correction. This paper will describe the orbit correction system and future plans to extend this method to energy correction

  6. Madaket Harbor, Nantucket, Massachusetts. Water Resources Improvement.

    Science.gov (United States)

    1977-07-01

    will continue to be, important increases in the recreational use of land and water. The harbor area is an important arena for commercial shellfishing...an important arena for commercial shell fishing. The past few years have seen a rather rapid increase in residential land use. Construction has...beamc. Tnis material will be re-deposited,, viaj troio it 1-apfro1inr ox prior location. j, MADAKET HARBOR NANTUCKET, MASSACHUSETTS FEASIBILITY

  7. 78 FR 36545 - Notice of Ability To Pay-Cash-out Settlement Agreement for the Jefferson City Residential Yards...

    Science.gov (United States)

    2013-06-18

    ... ENVIRONMENTAL PROTECTION AGENCY [FRL-9824-4] Notice of Ability To Pay--Cash-out Settlement... payment of certain response costs incurred at the Jefferson City Residential Yards Site in Jefferson City... portion of the past costs expended at the Site. Payment shall be made in 35 installments of $2,500 per...

  8. Obituary: Thomas Julian Ahrens (1936-2010)

    Science.gov (United States)

    Jeanloz, Raymond; Asimow, Paul

    2011-12-01

    Thomas J. Ahrens, a leader in the use of shock waves to study planetary interiors and impact phenomena, died at his home in Pasadena, California on November 24, 2010, at the age of 74. He was the California Institute of Technology's Fletcher Jones Professor of Geophysics, formally emeritus since 2005 but professionally active to the end. Tom was a pioneer in experimental and numerical studies of the effects of hypervelocity impact, arguably the most important geophysical process in the formation, growth and - in many cases - surface evolution of planets. As a professor at Caltech, he established the foremost university laboratory for shock wave experiments, where students and research associates from around the world pursued basic research in geophysics, planetary science and other disciplines. Previously, high-pressure shock experiments were primarily conducted in national laboratories, where they were initially associated with development of nuclear weapons. The shock wave laboratory at Caltech was noted for key measurements addressing major questions in planetary geophysics. Equation-of-state studies on silicate melts showed that magma deep in Earth's mantle could be denser than the coexisting crystals, implying downward transport of melts (and associated heat) rather than the upward eruption of lavas observed in volcanic regions at Earth's surface. Shock-melting experiments on iron at pressures of Earth's core provide a crucial constraint on the temperature at the center of our planet. And studies of hydrous, carbonate and sulphate minerals under shock compression document how climate-altering molecules can be released by major impacts, such as the K/T event associated with the most recent mass extinction of biota in Earth history. In addition, Tom was a leader in numerical simulation of cratering, bringing the most recent laboratory measurements into the modeling of planetary impacts. Tom's training was in geophysics and applied experimental physics, as

  9. Deep Exclusive Pseudoscalar Meson Production at Jefferson Lab Hall C

    Energy Technology Data Exchange (ETDEWEB)

    Basnet, Samip [Univ. of Regina, SK (Canada)

    2017-09-01

    Measurements of exclusive meson production are a useful tool in the study of hadronic structure. In particular, one can discern the relevant degrees of freedom at different distance scales through these studies. In the transition region between low momentum transfer (where a description of hadronic degrees of freedom in terms of effective hadronic Lagrangians is valid) and high momentum transfer (where the degrees of freedom are quarks and gluons), the predictive power of Quantum Chromodynamics (QCD), the theory of the strong interaction, is limited due to the absence of a complete solution. Thus, one has to rely upon experimental data from the non-perturbative intermediate-energy regime to thoroughly understand the onset of perturbative QCD (pQCD) as the momentum transfer is increased. This work involves two deep exclusive meson electroproduction experiments at Jefferson Lab (JLab). The p(e,e'pi+)n reaction is studied at fixed Q^2 and W of 2.5 GeV2 and 2.0 GeV, respectively, while varying the four momentum transfer to the nucleon -t from 0.2 to 2.1 GeV2 . As -t is increased, the hadronic interaction scale is reduced independently of the observation scale of the virtual photon, providing valuable information about the hard- scattering process in general. The data was taken at JLab Hall C in 2003, as a part of the experiment E01-004, Fpi-2, using the High Momentum Spectrometer (HMS) and Short Orbit Spectrometer (SOS), and in this work, the results of the differential cross section analysis are presented and compared to prior data, as well as two theoretical models. Using these results over a wide -t range, the transition from hard to soft QCD is also studied. In addition, the p(e,e'K+)Lambda(Sigma0) reactions are also studied. Despite their importance in elucidating the reaction mechanism underlying strangeness production, we still do not have complete understanding of these reactions above the resonance region. The experiment, E12- 09-011, intends to

  10. Thomas Henry Huxley et la Bible Thomas Henry Huxley and the Bible

    Directory of Open Access Journals (Sweden)

    Christophe Duvey

    2009-10-01

    Full Text Available Thomas Henry Huxley devoted several essays to the study of the Bible. This interest can only be accounted for if his ideas on history, religion as well as epistemology are examined. According to him, a struggle between free thought and supernaturalism was culminating during the Victorian era, hence the need for a “New Reformation” which was heir to the ideals of freedom defended by the humanists of the Renaissance. This movement opposed the principles of the supporters of what he called “ecclesiasticism”. The advocates of the “New Reformation” could rely on the progress of modern science, and agnosticism, which Huxley identified with scientific method, became its epistemological foundation. As a result, Huxley thought that the authority of physical science was in conflict with the infallibility of the Scriptures and with the theological arguments which rested on it, and this notably led him to the conclusion that the biblical narrative of the Flood was unhistorical. The naturalisation of the Scriptures seems then logically to follow his philosophical views based on the limits of human knowledge.It appears that it was the question of authority which underlay Huxley’s interest in the Bible. He thought that the authority of the Scriptures must be replaced by that of science.

  11. The Concurrentism of Thomas Aquinas: Divine Causation and Human Freedom

    Czech Academy of Sciences Publication Activity Database

    Dvořák, Petr

    2013-01-01

    Roč. 41, č. 3 (2013), s. 617-634 ISSN 0048-3893 R&D Projects: GA ČR(CZ) GAP401/11/0371 Institutional support: RVO:67985955 Keywords : divine causation * free will * concurrentism * Thomas Aquinas Subject RIV: AA - Philosophy ; Religion

  12. Towards silence: Thomas Mofolo, small literatures and poor translation

    African Journals Online (AJOL)

    Despite having written three novels in the first decade of the 20th century, Thomas Mofolo has been largely ignored by historians .... poems dealing directly with the stars, the moon, and the Milky Way. In other ..... Mzilikazi is leading the flight:.

  13. Thomas Secker M.D.: Archbishop and man-midwife.

    Science.gov (United States)

    Morgan-Guy, John

    2018-05-01

    This paper provides a biographical outline of the career of Thomas Secker, MD, who from 1758-68 was Archbishop of Canterbury. Although much has been written on Secker, this study seeks to highlight his training in medicine, which has been largely overlooked hitherto by historians.

  14. Individual and contextual variation in Thomas langur male loud calls

    NARCIS (Netherlands)

    Wich, S.A.; Koski, S.; Vries, Han de; Schaik, Carel P. van

    2003-01-01

    Individual and contextual differences in male loud calls of wild Thomas langurs (Presbytis thomasi) were studied in northern Sumatra, Indonesia. Loud calls were given in the following contexts: morning calls, vocal responses to other groups, between-group encounter calls and alarmcalls. Loud

  15. Religious Conscience and Civic Conscience in Thomas Hobbes's Civic Philosophy.

    Science.gov (United States)

    Pepperell, Keith C.

    1989-01-01

    This article discusses Thomas Hobbes' concept of conscience, the historical context in which the concept was formulated, and Hobbes' conclusion that civil law takes precedence over religious conscience. Hobbes' views are related to the debate between Pratte and Losito over the interaction between religious and civic conscience. (IAH)

  16. The Sovereign as Educator: Thomas Hobbes's National Curriculum.

    Science.gov (United States)

    Parry, Geraint

    1998-01-01

    Focuses on Thomas Hobbes, an English political philosopher who argued that the solution to civil disorders lay in a sovereign authority backed with force. Argues that education should be seen at the center of Hobbes's project of rescuing society from the disorders threatening civilization throughout 17th-century Europe. (CMK)

  17. Ethical Implications of Thomas Reid's Philosophy of Rhetoric.

    Science.gov (United States)

    Skopec, Eric Wm.

    Eighteenth century Scottish philosopher Thomas Reid's emphasis on first principles of knowledge is fundamental to his ethics of rhetoric. Reid found the reduction of mental activities to material phenomena by Hobbes and others to be particularly odious and destructive of common sense. Turning to the analysis of human nature, he developed a radical…

  18. M O Ikeke Appraisal of Thomas Berry's Idea of Technological ...

    African Journals Online (AJOL)

    Oduor

    understanding of the natural world to the solution of practical problems”. According to ... technology is not needed, but its ethical use is imperative. We set out ... named William Nathan after his father, became known as Thomas, the name he took for his ..... Nigeria, oil companies do not follow the best international standards.

  19. Thomas Young's research on fluid transients: 200 years on

    NARCIS (Netherlands)

    Tijsseling, A.S.; Anderson, A.; Hunt, S.

    2008-01-01

    Thomas Young published in 1808 his famous paper (1) in which he derived the pressure wave speed in an incompressible liquid contained in an elastic tube. Unfortunately, Young's analysis was obscure and the wave speed was not explicitly formulated, so his achievement passed unnoticed until it was

  20. Thomas Young's research on fluid transients : 200 years on

    NARCIS (Netherlands)

    Tijsseling, A.S.; Anderson, A.

    2008-01-01

    Thomas Young published in 1808 his famous paper (1) in which he derived the pressure wave speed in an incompressible liquid contained in an elastic tube. Unfortunately, Young's analysis was obscure and the wave speed was not explicitly formulated, so his achievement passed unnoticed until it was

  1. Thomas Aquinas: On Law, Tyranny and Resistance | Swartz | Acta ...

    African Journals Online (AJOL)

    Thomas Aquinas's notion on law, tyranny and resistance served as a limitation on governmental powers. When those who bear the law command things which exceed the competence of such authority, the subject is free to obey or disobey. The function of the law culminates in two maxims: quantum ad vim coactivam legis ...

  2. Teaching with Purpose: An Interview with Thomas E. Ludwig

    Science.gov (United States)

    Ludwig, Timothy D.; Ludwig, David J.

    2010-01-01

    Thomas E. Ludwig is the John Dirk Werkman Professor of Psychology at Hope College, where he joined the faculty in 1977 after receiving his PhD in development and aging from Washington University in St. Louis. His research focuses on developmental issues in cognitive neuropsychology. He is also the author or coauthor of more than a dozen sets of…

  3. Matrix models and stochastic growth in Donaldson-Thomas theory

    Energy Technology Data Exchange (ETDEWEB)

    Szabo, Richard J. [Department of Mathematics, Heriot-Watt University, Colin Maclaurin Building, Riccarton, Edinburgh EH14 4AS, United Kingdom and Maxwell Institute for Mathematical Sciences, Edinburgh (United Kingdom); Tierz, Miguel [Grupo de Fisica Matematica, Complexo Interdisciplinar da Universidade de Lisboa, Av. Prof. Gama Pinto, 2, PT-1649-003 Lisboa (Portugal); Departamento de Analisis Matematico, Facultad de Ciencias Matematicas, Universidad Complutense de Madrid, Plaza de Ciencias 3, 28040 Madrid (Spain)

    2012-10-15

    We show that the partition functions which enumerate Donaldson-Thomas invariants of local toric Calabi-Yau threefolds without compact divisors can be expressed in terms of specializations of the Schur measure. We also discuss the relevance of the Hall-Littlewood and Jack measures in the context of BPS state counting and study the partition functions at arbitrary points of the Kaehler moduli space. This rewriting in terms of symmetric functions leads to a unitary one-matrix model representation for Donaldson-Thomas theory. We describe explicitly how this result is related to the unitary matrix model description of Chern-Simons gauge theory. This representation is used to show that the generating functions for Donaldson-Thomas invariants are related to tau-functions of the integrable Toda and Toeplitz lattice hierarchies. The matrix model also leads to an interpretation of Donaldson-Thomas theory in terms of non-intersecting paths in the lock-step model of vicious walkers. We further show that these generating functions can be interpreted as normalization constants of a corner growth/last-passage stochastic model.

  4. Matrix models and stochastic growth in Donaldson-Thomas theory

    International Nuclear Information System (INIS)

    Szabo, Richard J.; Tierz, Miguel

    2012-01-01

    We show that the partition functions which enumerate Donaldson-Thomas invariants of local toric Calabi-Yau threefolds without compact divisors can be expressed in terms of specializations of the Schur measure. We also discuss the relevance of the Hall-Littlewood and Jack measures in the context of BPS state counting and study the partition functions at arbitrary points of the Kähler moduli space. This rewriting in terms of symmetric functions leads to a unitary one-matrix model representation for Donaldson-Thomas theory. We describe explicitly how this result is related to the unitary matrix model description of Chern-Simons gauge theory. This representation is used to show that the generating functions for Donaldson-Thomas invariants are related to tau-functions of the integrable Toda and Toeplitz lattice hierarchies. The matrix model also leads to an interpretation of Donaldson-Thomas theory in terms of non-intersecting paths in the lock-step model of vicious walkers. We further show that these generating functions can be interpreted as normalization constants of a corner growth/last-passage stochastic model.

  5. Cold pasta phase in the extended Thomas-Fermi approximation

    Science.gov (United States)

    Avancini, S. S.; Bertolino, B. P.

    2015-10-01

    In this paper, we aim to obtain more accurate values for the transition density to the homogenous phase in the nuclear pasta that occurs in the inner crust of neutron stars. To that end, we use the nonlinear Walecka model at zero temperature and an approach based on the extended Thomas-Fermi (ETF) approximation.

  6. Fasihi ya Kiswahili na rushwa Tanzania: Thomas A. R. Kamugisha ...

    African Journals Online (AJOL)

    Makala hii inajaribu kuelezea mchango wa fasihi ya Kiswahili katika kuijadili rushwa. Kwa kurejea kwenye Riwaya ya Thomas A.R. Kamugisha Kitu Kidogo tu! makala hii inasawilisha miongo takribani mitatu ya dhana ya “kitu kidogo” na athari zake kwa jamii ya Tanzania. Kwa kuijadili riwaya ya Kitu Kidogo tu! makala hii ...

  7. Insights into translation and the original text: Thomas Mofolo's Chaka

    African Journals Online (AJOL)

    This paper aims to explore the strategies applied during the translation of chosen passages from the original Sesotho text of Chaka by Thomas Mofolo into English. Insights expressed here originate from participation in the translation workshops during the conference on “Translating Mofolo”. Different stages of the ...

  8. Thomas Hopley and Mid-Victorian Attitudes to Corporal Punishment

    Science.gov (United States)

    Middleton, Jacob

    2005-01-01

    This paper discusses the trial of Thomas Hopley, accused of killing his pupil Reginald Cancellor in 1860 during an act of corporal punishment. The case provoked immediate sensational interest and became an important defining point in how corporal punishment is treated in British law. Established by this trial was the test that any corporal…

  9. Some aspects of fisheries ecology in Thomas dam, Kano Nigeria ...

    African Journals Online (AJOL)

    The diversity, length-weight relationship and condition factor of fish species of Thomas Dam, Dambatta Kano were studied fortnightly between November, 2016 and February, 2017. Fish species were collected using line nets, cast nets, hooks and traps; weighted to the nearest gram and standard length measured to the ...

  10. The Invention Factory: Thomas Edison's Laboratories. Teaching with Historic Places.

    Science.gov (United States)

    Bolger, Benjamin

    This lesson explores the group of buildings in West Orange, New Jersey, built in 1887, that formed the core of Thomas Edison's research and development complex. They consisted of chemistry, physics, and metallurgy laboratories; machine shop; pattern shop; research library; and rooms for experiments. The lesson explains that the prototypes (ideas…

  11. Waren Judas en Thomas gnostici? Het evangelie naar Johannes ...

    African Journals Online (AJOL)

    and Philip are also more conspicuous characters in the Gospel of John than in the Synoptics. This challenges scholars to read these sections in relation to Gnosticism. The article aims at reading the scenes dealing with Jude and Thomas in John's gospel with a Gnostic framework in mind. These texts gain more profile than ...

  12. Full depth bituminous recycling of I-70, Thomas County, Kansas

    Science.gov (United States)

    2004-01-01

    In 1990, 13 full depth asphalt pavement test sections were built on a portion of I-70 in Thomas County, Kansas. Various combinations of hot mix and cold recycle mixes with different additives were used to build the test sections. Two of the test sect...

  13. Reflective Teaching and Practice: Interview with Thomas Farrell

    Science.gov (United States)

    Pang, Alvin

    2017-01-01

    Thomas Farrell is widely known for his views and publications on the topic of Reflective Practice, which is key to the professional development of teachers in 21st century classrooms. He is Professor of Applied Linguistics at Brock University, Canada. Farrell has been a language teacher and teacher educator since 1978 and has worked in Korea,…

  14. Thomas B. Greenfield: A Challenging Perspective of Organizations

    Science.gov (United States)

    Bailey, Scott

    2010-01-01

    Organizations are not real; people are. Any science or theory of organizations must consider how the organization impinges, in a very real and tangible way, on the lives of its members. This article traces the development of one such theoretical branch of organizational science through the pioneering work of Thomas B. Greenfield. The author uses…

  15. Potential motion for Thomas-Fermi non-topological solitons

    International Nuclear Information System (INIS)

    Bahcall, S.

    1992-04-01

    In the Thomas-Fermi approximation to theories of coupled fermions and scalars, the equations for spherically-symmetric non-topological solitons have the form of potential motion. This gives a straightforward method for proving the existence of non-topological solitons in a given theory and for finding the constant-density, saturating solutions

  16. Obituary: Thomas Gold, 1920-2004

    Science.gov (United States)

    Dermott, Stanley F.

    2004-12-01

    Thomas "Tommy" Gold died of heart disease at Cayuga Medical Center, Ithaca NY on 22 June 2004 at the age of 84. He will be remembered as one of the most interesting, dynamic and influential scientists of his generation. Tommy's paradigm-changing ideas in astronomy and planetary science, while original and bold, were also highly controversial. With his radical work on the origin of natural gas and petroleum, the controversy is likely to continue. Tommy was born in Vienna, Austria on 22 May 1920, moving with his family to Berlin at age 10 and then, after the rise of Hitler in 1933, to England. His parents were Josephine (nee Martin) and Maximillian Gold, a successful steel magnate. Tommy was educated at Zuoz College in Switzerland where he became an expert skier and developed an athletic prowess that he maintained throughout his life, winning a NASTAR gold medal for skiing at the age of 65. He studied Mechanical Sciences at Trinity College, Cambridge, but much to his disgust his education was interrupted because of internment by the British as a suspected enemy alien. That unfortunate period (I remember him saying to me "Can you believe the stupidity, interring people like me who had fled from Nazi Germany?") had one good outcome: on his first night in camp he met Hermann Bondi who had an important influence on his early development as a scientist. They were both born in Vienna, their parents knew each other, and they were fellow students at Trinity, but this was their first meeting. On release, he went immediately into top-secret radar research for the British Admiralty, working as a team with Bondi and Fred Hoyle in a farm cottage in Dunsfold, Surrey. Tommy's first published research, which was a Nature paper with R.J. Pumphrey in 1947, was not in astronomy but physiology. He applied his engineer's understanding of positive feedback to develop and test a resonance model for how the human ear determines pitch. His conclusion that pitch discrimination occurs

  17. 75 FR 52023 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2010-08-24

    ... DEPARTMENT OF THE INTERIOR National Park Service Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service... of the Thomas Burke Memorial Washington State Museum (Burke Museum), University of Washington...

  18. 75 FR 36672 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2010-06-28

    ... DEPARTMENT OF THE INTERIOR National Park Service Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service... of the Thomas Burke Memorial Washington State Museum (Burke Museum), University of Washington...

  19. A Green Fabry-Perot Cavity for Jefferson Lab Hall A Compton Polarimetry

    International Nuclear Information System (INIS)

    Rakhman, Abdurahim; Souder, Paul; Nanda, Sirish

    2009-01-01

    A green laser (CW, 532 nm) based Fabry-Perot cavity for high precision Compton Polarimetry is under development in Hall A of the Jefferson Laboratory. In this paper, we present the principle and the preliminary studies for our test cavity.

  20. 77 FR 2120 - Environmental Impact Statement for New Orleans Rail Gateway (NORG), Jefferson and Orleans...

    Science.gov (United States)

    2012-01-13

    ... Xavier University of Louisiana, University Center, 3rd Floor, Mary and William McCaffrey Ballroom B, 4980..., Council Chambers, 1221 Elmwood Park Boulevard, Jefferson, LA 70123 Information on the meeting locations is... Press Drive and then continuing eastward along Dwyer Road; on the east along Maxent Canal near Bayou...

  1. Cycle-Based Budgeting and Continuous Improvement at Jefferson County Public Schools: Year 1 Report

    Science.gov (United States)

    Yan, Bo

    2016-01-01

    This report documents the first-year of implementing Cycle-based Budgeting at Jefferson County Public Schools (Louisville, KY). To address the limitations of incremental budgeting and zero-based budgeting, a Cycle-based Budgeting model was developed and implemented in JCPS. Specifically, each new program needs to submit an on-line budget request…

  2. 76 FR 18753 - Jefferson Island Storage & Hub, L.L.C.; Notice of Filing

    Science.gov (United States)

    2011-04-05

    ... notification when a document is added to a subscribed docket(s). For assistance with any FERC Online service... services provided under section 311 of the Natural Gas Policy Act of 1978 (``NGPA''). Jefferson Island proposes to revise its SOC to provide its customers the option to use pooling points as additional points...

  3. Hospital Web site 'tops' in Louisiana. Hospital PR, marketing group cites East Jefferson General Hospital.

    Science.gov (United States)

    Rees, Tom

    2002-01-01

    East Jefferson General Hospital in Metairie, La., launched a new Web site in October 2001. Its user-friendly home page offers links to hospital services, medical staff, and employer information. Its jobline is a powerful tool for recruitment. The site was awarded the 2002 Pelican Award for Best Consumer Web site by the Louisiana Society for Hospital Public Relations & Marketing.

  4. Transcribing Gail Jefferson: The 1977 Boston talk as it actually was

    DEFF Research Database (Denmark)

    Nevile, Maurice Richard

    2015-01-01

    A talk by Gail Jefferson, one of the founders of Conversation Analysis, has been recently made available, and Maurice Nevile undertook to transcribe it for the benefit of the language-in-interaction community. Here he reports on what it meant to him, and what we can all get out of such a powerful...

  5. Thomas van Aquino en de Thomas van Utrecht. Kritische kanttekeningen bij de Utrechtse lezing van de Summa Theologiae

    NARCIS (Netherlands)

    Aertsen, J.A.

    1994-01-01

    In the last decade a group of scholars at the Catholic University of Utrecht developed an approach of its own to Aquinas's Summa theologiae, which is named “the Utrecht hypothesis”. In section I this hypothesis is summarized in eight propositions. Its main elements are twofold. (A) Thomas does not

  6. 76 FR 8653 - Drawbridge Operation Regulation; Gulf Intracoastal Waterway, New Orleans Harbor, Inner Harbor...

    Science.gov (United States)

    2011-02-15

    ... Operation Regulation; Gulf Intracoastal Waterway, New Orleans Harbor, Inner Harbor Navigation Canal, New Orleans, Orleans Parish, LA AGENCY: Coast Guard, DHS. ACTION: Notice of temporary deviation from... Lock), at New Orleans, Orleans Parish, Louisiana. This deviation is necessary to replace all of the...

  7. 75 FR 78601 - Drawbridge Operation Regulation; Gulf Intracoastal Waterway, New Orleans Harbor, Inner Harbor...

    Science.gov (United States)

    2010-12-16

    ... Operation Regulation; Gulf Intracoastal Waterway, New Orleans Harbor, Inner Harbor Navigation Canal, New Orleans, Orleans Parish, LA AGENCY: Coast Guard, DHS. ACTION: Notice of temporary deviation from... Harvey Lock), at New Orleans, Orleans Parish, Louisiana. This deviation is necessary to adjust the...

  8. 76 FR 20032 - Thomas E. Mitchell, M.D.; Dismissal of Proceeding

    Science.gov (United States)

    2011-04-11

    ... DEPARTMENT OF JUSTICE Drug Enforcement Administration [Docket No. 10-7] Thomas E. Mitchell, M.D... Control, Drug Enforcement Administration, issued an Order to Show Cause to Thomas E. Mitchell, M.D....100(b) and 0.104, I hereby order that the Order to Show Cause issued to Thomas E. Mitchell, M.D., be...

  9. 77 FR 51564 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2012-08-24

    ... Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Thomas Burke Memorial Washington... of human remains under the control of the Thomas Burke Memorial Washington State Museum (Burke Museum...

  10. 33 CFR 165.762 - Security Zone; St. Thomas, U.S. Virgin Islands.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; St. Thomas, U.S....762 Security Zone; St. Thomas, U.S. Virgin Islands. (a) Location. Moving and fixed security zones are established 50 yards around all cruise ships entering, departing, moored or anchored in the Port of St. Thomas...

  11. New Harbor in Kangerlussuaq, Western Greenland

    DEFF Research Database (Denmark)

    Stenstad, Jaran Gjerlandj; Eppeland, Kjetil Grødal; Ingeman-Nielsen, Thomas

    2015-01-01

    transported by rivers from the inland ice to the inner parts of the fjord. These sediment layers reduce the water depth and prevent container- and cruiseships to dock, imposing large additional maintenance costs, and inefficient operability. Through engineering geological field and lab investigations......, a possible new harbor location around 10 km further out the fjord near Hancock Pynt, has been investigated. The onshore area was found to be highly suitable for a harbor support area, where a sub-base thickness of 1.8 m with gravel cover-layer was found adequate for the calculated design loads. Existing...

  12. Feynman versus Bakamjian-Thomas in light-front dynamics

    International Nuclear Information System (INIS)

    Araujo, W.R.B. de; Beyer, M.; Weber, H.J.; Frederico, T.

    1999-01-01

    We compare the Bakamjian-Thomas (BT) formulation of relativistic few-body systems with light-front field theories that maintain closer contact with Feynman diagrams. We find that Feynman diagrams distinguish Melosh rotations and other kinematical quantities belonging to various composite subsystem frames that correspond to different loop integrals. The BT formalism knows only the rest frame of the whole composite system, where everything is evaluated. (author)

  13. Thomas Kuhn e a nova historiografia da ciência

    Directory of Open Access Journals (Sweden)

    Bernardo Jefferson de Oliveira

    2002-01-01

    Full Text Available This article tries to show the Thomas Kuhn's critics to some conceptions of the contemporary historiography of science that became radical many of the positions formulated initially by Kuhn himself. It is still intended to show that the new orientation of Kuhn, starting from his critic to his successors, approaches him more of his initial influences, especially, Ludwig Wittgenstein and Ludwik Fleck.

  14. Information entropy and Thomas-Fermi screening functions

    International Nuclear Information System (INIS)

    Donnamaria, M.C.; Meson, A.M.; Proto, A.N.

    1989-11-01

    In this work we apply the information entropy concept to analyze different trial electron densities in momentum and coordinate spaces, into the Thomas-Fermi density functional formalism. Furthermore, we try to assess how well-known physical properties of neutral atoms are reproduced and hence evaluate the quality of the screening functions in the light of their predictive capacity. (author). 32 refs, 4 figs, 3 tabs

  15. Thomas Docherty. Culture and a New Experience of Democracy

    Directory of Open Access Journals (Sweden)

    Erik S. RORABACK

    2006-10-01

    Full Text Available Thomas Docherty’s freshly printed volume from Stanford University Press, Aesthetic Democracy, is requisite reading for all those thinking beings out there interested in the question of the inter-relation and even inter-articulation between culture and experience for a possible new encounter with the political that would inch toward a truer form of democracy for our current postmodern social spheres and spaces. Professor of English and Comparative Literature in the University of Warwick, long ...

  16. The Thomas-Fermi model: momentum expectation values

    International Nuclear Information System (INIS)

    Dmitrieva, I.K.; Plindov, G.I.

    1983-01-01

    Within the Thomas-Fermi model including the exchange interaction and contributions of strongly bound electrons, analytical expressions are obtained for all momentum expectation values and for some of the expectation values of powers of the electron density for an atom with an arbitrary degree of ionization. It is shown that a correct treatment of strongly bound electrons gives a quantitative estimate of and within 3 - 1 expansion coefficients for and are given as an explicit function of the electron number

  17. Losing Thomas & Ella: A Father's Story (A Research Comic).

    Science.gov (United States)

    Weaver-Hightower, Marcus B

    2017-09-01

    "Losing Thomas & Ella" presents a research comic about one father's perinatal loss of twins. The comic recounts Paul's experience of the hospital and the babies' deaths, and it details the complex grieving process afterward, including themes of anger, distance, relationship stress, self-blame, religious challenges, and resignation. A methodological appendix explains the process of constructing the comic and provides a rationale for the use of comics-based research for illness, death, and grief among practitioners, policy makers, and the bereaved.

  18. Thomas Alva Edison (170th Anniversary of His Birth)

    OpenAIRE

    V. P. Samokhin; E A. Tikhomirovа

    2017-01-01

    A brief overview of the major technical achievements of Thomas Edison, an outstanding American inventor, author of more than 1,000 US patents and several thousand patents in other countries, honorary academician of the USSR. Presents biographical information and details of the formation of Edison, his work as a telegrapher, organizing the world's first industrial research laboratory for the continuous development of technological innovations, as well as some interesting facts about his life a...

  19. Safety Performance Improvement for Nuclear Power Plants Utilizing THOMAS

    International Nuclear Information System (INIS)

    Kim, Won June; Ryu, Jung Uk; Suh, Kune Y.

    2005-01-01

    THOMAS (Thermal Hydraulics Online Monitoring Advisory System) is equipped with a couple of salient features compared with existing monitoring systems. The first has to do with the three-dimensional (3D) visualization technique to support the nuclear power plant (NPP) operators and personnel using the virtual reality (VR) technology. VR depicts an environment simulated by a computer. Most of the VR environments primarily include visual experiences, displayed either on a monitor or though special stereoscopic goggles. Users can often interactively manipulate a VR environment, either through standard input devices like a keyboard, or through specially designed devices like a cybergloves. Additional devices were not applied the in THOMAS. The visualized model file is brought to the VR space from the computer-aided design (CAD) tool. In the VR space, using mapping, the component color is changed with linked value of the safety variables. Operators thus can easily recognize the plant condition. This is related with the human factor engineering. The second is the function of decision making using the influence diagram logic. The influence diagram logic is based on the total probability and Bayesian theory. The accident modeling is rooted in the emergency operating procedure (EOP). The final goal of this system is, in the accident situation, to present a success path to the operator for the recovery of the NPP system. At the current developing level, the database signals THOMAS. In other words, a spectrum of system analysis codes provides the safety parameter values to the database, which are subsequently supplied to THOMAS through the network

  20. Evaluation of Sediment Contamination in Pearl Harbor

    Science.gov (United States)

    1992-06-01

    ancient Hawaiians, was a large natural inland lagoon. Numerous walled fishponds located inside the harbor were used to cultivate various species of fishes... Ecotoxicology , Commission on Natural Resources, National Academy Press, Washington, D.C., 103 pp. National Research Council, 1989. Contaminated Marine

  1. Kriegs- und Generationszeugen: Adrienne Thomas und Vera Brittain // Generation and War Witnesses: Adrienne Thomas and Vera Brittain

    OpenAIRE

    Zitzlsperger, Ulrike

    2016-01-01

    Im Vordergrund stehen in diesem Beitrag Autorinnen, die sich in den dreißiger Jahren kritisch mit dem Ersten Weltkrieg und seinen Folgen auseinandersetzten. Am Beispiel von Adrienne Thomas ("Die Katrin wird Soldat") und Vera Brittain ("Testament of Youth") soll untersucht werden, wie die erklärte Zugehörigkeit von Frauen zur 'Lost Generation' mit der aktiven Kriegsteilnahme als Krankenschwester und einem differenzierten Patriotismusverständnis verbunden wurde. Auffallend sind dabei nicht nur ...

  2. ADVANTAGES OF THE PROGRAM-BASED LOGBOOK SUBMISSION GUI AT JEFFERSON LAB

    Energy Technology Data Exchange (ETDEWEB)

    T. McGuckin

    2006-10-24

    DTlite is a Tcl/Tk script that is used as the primary interface for making entries into Jefferson Lab's electronic logbooks. DTlite was originally written and implemented by a user to simplify submission of entries into Jefferson Lab?s electronic logbook, but has subsequently been maintained and developed by the controls software group. The use of a separate, script-based tool for logbook submissions (as opposed to a web-based submission tool bundled with the logbook database/interface) provides many advantages to the users, as well as creating many challenges to the programmers and maintainers of the electronic logbook system. The paper describes the advantages and challenges of this design model and how they have affected the development lifecycle of the electronic logbook system.

  3. Jefferson Davis and the Failure of Confederate Military Strategy, 1861-1865

    Science.gov (United States)

    2010-04-14

    seventeen. Here he first met some of the men who later held key roles in the Confederate Army: Albert Sidney Johnston, Leonidas Polk, and later Robert...General Lee’s magnificent Army ofNorthem Virginia. Throughout the war Jefferson Davis failed to assign to any theater and entirely subsidiary role ...fight. 24 0 ENDNOTES 1 A. H. McDannald, B.L., ed., The Modern Concise Encyclopedia, vol. III, (New York: Unicorn Press, 1941), 490-491. 2 Harry

  4. A psychometric appraisal of the Jefferson Scale of Empathy using law students

    Directory of Open Access Journals (Sweden)

    Williams B

    2016-07-01

    Full Text Available Brett Williams,1 Adiva Sifris,2 Marty Lynch1 1Department of Community Emergency Health and Paramedic Practice, Faculty of Medicine, Nursing and Health Sciences, 2Faculty of Law, Monash University, Frankston, VIC, Australia Background: A growing body of literature indicates that empathic behaviors are positively linked, in several ways, with the professional performance and mental well-being of lawyers and law students. It is therefore important to assess empathy levels among law students using psychometrically sound tools that are suitable for this cohort.Participants and methods: The 20-item Jefferson Scale of Empathy – Health Profession Students Version was adapted for a law context (eg, the word “health care” became “legal”, and the new Jefferson Scale of Empathy – Law Students (JSE-L-S version was completed by 275 students at Monash University, Melbourne, Australia. Data were subjected to principal component analysis.Results: Four factors emerged from the principal component analysis (“understanding the client’s perspective”, “responding to clients’ experiences and emotions”, “responding to clients’ cues and behaviors”, and “standing in clients’ shoes”, which accounted for 46.7% of the total variance. The reliability of the factors varied, but the overall 18-item JSE-L-S yielded a Cronbach’s alpha coefficient of 0.80. Several patterns among the item loadings were similar to those reported in studies using other versions of the Jefferson Scale of Empathy.Conclusion: The JSE-L-S appears to be a reliable measure of empathy among undergraduate law students, which could help provide insights into law student welfare and future performance as legal practitioners. Additional evaluation of the JSE-L-S is required to disambiguate some of the minor findings explored. Adjustments may improve the psychometric properties. Keywords: empathy, law, student, Jefferson, sympathy

  5. Photoproduction of the f1(1285)/η(1295) Mesons using CLAS at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Dickson, Ryan [Carnegie Mellon Univ., Pittsburgh, PA (United States)

    2011-07-18

    This work presents the results of analysis of a meson mass mx =1281.0 ± 0.8 MeV/ c2 and a FWHM of Γx = 18.4 ± 1.4 MeV/ c2 seen in CLAS at Jefferson Lab in photoproduction off the proton, γp → xp.

  6. Modeling of Tsunami Currents in Harbors

    Science.gov (United States)

    Lynett, P. J.

    2010-12-01

    Extreme events, such as large wind waves and tsunamis, are well recognized as a damaging hazard to port and harbor facilities. Wind wave events, particularly those with long period spectral components or infragravity wave generation, can excite resonance inside harbors leading to both large vertical motions and strong currents. Tsunamis can cause great damage as well. The geometric amplification of these very long waves can create large vertical motions in the interior of a harbor. Additionally, if the tsunami is composed of a train of long waves, which it often is, resonance can be easily excited. These long wave motions create strong currents near the node locations of resonant motions, and when interacting with harbor structures such as breakwaters, can create intense turbulent rotational structures, typical in the form of large eddies or gyres. These gyres have tremendous transport potential, and have been observed to break mooring lines, and even cause ships to be trapped inside the rotation, moving helplessly with the flow until collision, grounding, or dissipation of the eddy (e.g. Okal et al., 2006). This presentation will introduce the traditional theory used to predict wave impacts on harbors, discussing both how these models are practically useful and in what types of situations require a more accurate tool. State-of-the-art numerical models will be introduced, with a focus on recent developments in Boussinesq-type modeling. The Boussinesq equations model can account the dispersive, turbulent and rotational flow properties frequently observed in nature. Also they have the ability to coupling currents and waves and can predict nonlinear wave propagation over uneven bottom from deep (or intermediate) water area to shallow water area. However, during the derivation of a 2D-horizontal equation set, some 3D flow features, such those driven by as the dispersive stresses and the effects of the unresolved small scale 3D turbulence, are excluded. Consequently

  7. NEW EPICS/RTEMS IOC BASED ON ALTERA SOC AT JEFFERSON LAB

    Energy Technology Data Exchange (ETDEWEB)

    Yan, Jianxun [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Seaton, Chad [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Allison, Trent L. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Bevins, Brian S. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Cuffe, Anthony W. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2018-02-01

    A new EPICS/RTEMS IOC based on the Altera System-on-Chip (SoC) FPGA is being designed at Jefferson Lab. The Altera SoC FPGA integrates a dual ARM Cortex-A9 Hard Processor System (HPS) consisting of processor, peripherals and memory interfaces tied seamlessly with the FPGA fabric using a high-bandwidth interconnect backbone. The embedded Altera SoC IOC has features of remote network boot via U-Boot from SD card or QSPI Flash, 1Gig Ethernet, 1GB DDR3 SDRAM on HPS, UART serial ports, and ISA bus interface. RTEMS for the ARM processor BSP were built with CEXP shell, which will dynamically load the EPICS applications at runtime. U-Boot is the primary bootloader to remotely load the kernel image into local memory from a DHCP/TFTP server over Ethernet, and automatically run RTEMS and EPICS. The first design of the SoC IOC will be compatible with Jefferson Lab’s current PC104 IOCs, which have been running in CEBAF 10 years. The next design would be mounting in a chassis and connected to a daughter card via standard HSMC connectors. This standard SoC IOC will become the next generation of low-level IOC for the accelerator controls at Jefferson Lab.

  8. Economic-environmental modeling of point source pollution in Jefferson County, Alabama, USA.

    Science.gov (United States)

    Kebede, Ellene; Schreiner, Dean F; Huluka, Gobena

    2002-05-01

    This paper uses an integrated economic-environmental model to assess the point source pollution from major industries in Jefferson County, Northern Alabama. Industrial expansion generates employment, income, and tax revenue for the public sector; however, it is also often associated with the discharge of chemical pollutants. Jefferson County is one of the largest industrial counties in Alabama that experienced smog warnings and ambient ozone concentration, 1996-1999. Past studies of chemical discharge from industries have used models to assess the pollution impact of individual plants. This study, however, uses an extended Input-Output (I-O) economic model with pollution emission coefficients to assess direct and indirect pollutant emission for several major industries in Jefferson County. The major findings of the study are: (a) the principal emission by the selected industries are volatile organic compounds (VOC) and these contribute to the ambient ozone concentration; (b) the direct and indirect emissions are significantly higher than the direct emission by some industries, indicating that an isolated analysis will underestimate the emission by an industry; (c) while low emission coefficient industries may suggest industry choice they may also emit the most hazardous chemicals. This study is limited by the assumptions made, and the data availability, however it provides a useful analytical tool for direct and cumulative emission estimation and generates insights on the complexity in choice of industries.

  9. 32 CFR 765.6 - Regulations for Pearl Harbor, Hawaii.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 5 2010-07-01 2010-07-01 false Regulations for Pearl Harbor, Hawaii. 765.6... RULES RULES APPLICABLE TO THE PUBLIC § 765.6 Regulations for Pearl Harbor, Hawaii. The Commander, U.S. Naval Base, Pearl Harbor, Hawaii, is responsible for prescribing and enforcing such rules and...

  10. Teaching about Pearl Harbor. Curriculum Enhancement Series #1.

    Science.gov (United States)

    Shields, Anna Marshall

    These materials consist of sample lesson plans for teaching about the Japanese attack on Pearl Harbor on December 7, 1941, in both U.S. and world history classes. The lesson plans challenge students to examine how current attitudes toward the Japanese may be rooted in World War II and Pearl Harbor. Selected bibliographies on Pearl Harbor, World…

  11. Remembering Pearl Harbor at 75 Years.

    Science.gov (United States)

    Liehr, Patricia; Sopcheck, Janet; Milbrath, Gwyneth

    2016-12-01

    : On December 7, 1941, the Sunday-morning quiet of the U.S. naval base in Pearl Harbor, Hawaii, was shattered by dive-bombing Japanese fighter planes. The planes came in two waves-and when it was all over, more than 2,400 were killed and more than 1,100 were injured.Nurses were stationed at U.S. Naval Hospital Pearl Harbor, Tripler General Hospital (now Tripler Army Medical Center), Hickam Field Hospital, Schofield Barracks Station Hospital, and aboard the USS Solace, and witnessed the devastation. But they also did what nurses do in emergencies-they responded and provided care to those in need. Here are the stories of a few of those nurses.

  12. Old Harbor Scammon Bay Hydro Feasibility

    Energy Technology Data Exchange (ETDEWEB)

    Brent Petrie

    2007-06-27

    The grantee, Alaska Village Electric Cooperative (AVEC), is a non-profit member owned rural electric generation and distribution cooperative. The proposed Project is located near the community of Old Harbor, Alaska. Old Harbor is on the southeastern coast of Kodiak Island, approximately 70 miles southwest of the City of Kodiak and 320 miles southwest of Anchorage. In 1998 sufficient information had been developed to apply for a license to construct the project and the cost was estimated to be $2,445,000 for a 500 KW project on Lagoon Creek. Major features of the project included an eight-foot high diversion dam on Mountain Creek, a desander box, a 9,800-foot long penstock to the powerhouse on Lagoon Creek, and a 5,500-foot long access road. It was also anticipated that the project could provide an additional source of water to Old Harbor. The report details the history and lessons learned in designing and permiting the proposed hydroelectric facility.

  13. Thomas N Bonner (1923-2003), medical historian.

    Science.gov (United States)

    Bickel, Marcel H

    2016-05-01

    Thomas Bonner made a long academic career, teaching medical history and higher education at several American universities and presiding over three of these. He engaged in politics for 2 years. As a historian of medicine, he published important books on topics including Midwestern medicine, medical education in the United States and in European countries, the entry of women into medicine in the 19th century and on the educator Abraham Flexner. His works were based on exhaustive research, penetrating analysis, language skills and the ability to explain complex information in understandable terms. Bonner lived a passionate life of commitment and devotion to various worthwhile causes. © The Author(s) 2014.

  14. Warm ''pasta'' phase in the Thomas-Fermi approximation

    International Nuclear Information System (INIS)

    Avancini, Sidney S.; Menezes, Debora P.; Chiacchiera, Silvia; Providencia, Constanca

    2010-01-01

    In the present article, the 'pasta' phase is studied at finite temperatures within a Thomas-Fermi (TF) approach. Relativistic mean-field models, both with constant and density-dependent couplings, are used to describe this frustrated system. We compare the present results with previous ones obtained within a phase-coexistence description and conclude that the TF approximation gives rise to a richer inner ''pasta'' phase structure and the homogeneous matter appears at higher densities. Finally, the transition density calculated within TF is compared with the results for this quantity obtained with other methods.

  15. Shell model test of the Porter-Thomas distribution

    International Nuclear Information System (INIS)

    Grimes, S.M.; Bloom, S.D.

    1981-01-01

    Eigenvectors have been calculated for the A=18, 19, 20, 21, and 26 nuclei in an sd shell basis. The decomposition of these states into their shell model components shows, in agreement with other recent work, that this distribution is not a single Gaussian. We find that the largest amplitudes are distributed approximately in a Gaussian fashion. Thus, many experimental measurements should be consistent with the Porter-Thomas predictions. We argue that the non-Gaussian form of the complete distribution can be simply related to the structure of the Hamiltonian

  16. Nom comú i nom propi segons Thomas Hobbes

    Directory of Open Access Journals (Sweden)

    Josep Moran i Ocerinjauregui

    2014-01-01

    Full Text Available Thomas Hobbes (1588-1679 tracta el llenguatge humà, i més concretament els noms, des d’un punt de vista filosòfic. Per a Hobbes, els noms són designadors de conceptes: els noms propis designen una sola cosa mentre que els noms comuns en designen diverses. Aquestes idees van ser objecte de reflexió filosòfica i van tenir gran influència en altres filòsofs, com John Stuart Mill.

  17. Thomas Mann's Death in Venice or Plutarch's way towards Eros

    OpenAIRE

    Gilabert Barberà, Pau

    2010-01-01

    In Death in Venice Thomas Mann refers explicitly to Plato's Symposium and Phaedrus in order to explain the relationship between Gustav von Aschenbach and Tadzio but he hides that his novel also depends on Plutarch's Eroticus. Why? The aim of this article is precisely to reveal the different reasons for such an attitude. Indeed, Plutarch speaks highly of conjugal love in his Eroticus and this way is not followed by Mann in Death in Venice but, at the same, the German writer finds in this Pluta...

  18. SOME ASPECTS OF CONTEMPORARY ATHEISM AND ST. THOMAS AQUINA

    Directory of Open Access Journals (Sweden)

    CH. MOREROD

    2010-10-01

    Full Text Available Atheism has become fashionable in the recent years. It has diff erent forms, but in many cases starts from the presupposition that the only rational approach is the one of natural sciences. Believers have the duty to provide some answers to the atheists, also at the philosophical level. St. Thomas Aquinas off ers several arguments that can be explained in contemporary terms: the Universe needs a fi rst cause, which acts also through created causes; our desire for the infi nite is a sign of God; the order of the Universe suggests and organizer

  19. Porter-Thomas distribution in unstable many-body systems

    International Nuclear Information System (INIS)

    Volya, Alexander

    2011-01-01

    We use the continuum shell model approach to explore the resonance width distribution in unstable many-body systems. The single-particle nature of a decay, the few-body character of the interaction Hamiltonian, and the collectivity that emerges in nonstationary systems due to the coupling to the continuum of reaction states are discussed. Correlations between the structures of the parent and daughter nuclear systems in the common Fock space are found to result in deviations of decay width statistics from the Porter-Thomas distribution.

  20. Thomas James Walker (1835-1916): Surgeon and general practitioner.

    Science.gov (United States)

    Thomas, Martyn

    2018-02-01

    Thomas James Walker was a surgeon and general practitioner who worked in the city of Peterborough at a time when there were changes and innovations in the practice of medicine. After training in medicine and surgery at Edinburgh University, he qualified in London in 1857. He was a pioneer of laryngoscopy. He played an important role in introducing antiseptic surgery to the Peterborough Infirmary and was instrumental in the development of the operating theatre which opened in 1894. He was a philanthropist and collector of Roman and Saxon artefacts. In 1915, he was recognized as an outstanding member of the Peterborough community when he was offered the Freedom of the City.

  1. "German Culture is where I am": Thomas Mann in Exile

    OpenAIRE

    Helmut Koopmann

    1982-01-01

    Thomas Mann in exile reacted like many writers expelled from Germany: totally irritated he tried to defend his own identity by claiming that he was still the leading representative of Germany. But about 1938 a process of dissociation from Germany started which led to sharp remarks on Germany in his The Beloved Returns , to his conviction that German culture was where he lived and to the acknowledgement of America as his new home. Traces of his experience of exile, and a late answer on his se...

  2. Logical consistence and operating base in Thomas Hobbes. [Spanish

    Directory of Open Access Journals (Sweden)

    Rusbel Martínez Rodríguez

    2006-01-01

    Full Text Available The aim of this paper is to specify the operative elements included in the Thomas Hobbes philosophy substratum. I defend the idea that the logic in the Hobbes philosophy system depends on this substratum. In this paper I use the idea of «operative and thematic concepts» development by Eugen Fink. These concepts are used to show how all of the Hobbes philosophy system has explicit and implicit concepts. Another aim is to concede the importance of understanding the Hobbes philosophy as holistic.

  3. Reexamination of shell model tests of the Porter-Thomas distribution

    International Nuclear Information System (INIS)

    Grimes, S.M.

    1983-01-01

    Recent shell model calculations have yielded width amplitude distributions which have apparently not agreed with the Porter-Thomas distribution. This result conflicts with the present experimental evidence. A reanalysis of these calculations suggests that, although correct, they do not imply that the Porter-Thomas distribution will fail to describe the width distributions observed experimentally. The conditions for validity of the Porter-Thomas distribution are discussed

  4. Deeply virtual Compton scattering in the Hall A of Jefferson laboratory; Diffusion Compton profondement virtuelle dans le Hall A au Jefferson laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Munoz Camacho, C

    2005-12-15

    Generalized Parton Distributions (GPDs), introduced in the late 90's, provide a universal description of hadrons in terms of the underlying degrees of freedom of Quantum Chromodynamics: quarks and gluons. GPDs appear in a wide variety of hard exclusive reactions and the advent of high luminosity accelerator facilities has made the study of GPDs accessible to experiment. Deeply Virtual Compton Scattering (DVCS) is the golden process involving GPDs. The first dedicated DVCS experiment ran in the Hall A of Jefferson Lab in Fall 2004. An electromagnetic calorimeter and a plastic scintillator detector were constructed for this experiment, together with specific electronics and acquisition system. The experiment preparation, data taking and analysis are described in this document. Results on the absolute cross section difference for opposite beam helicities provide the first measurement of a linear combination of GPDs as a function of the momentum transfer to the nucleon. (author)

  5. Instantons, quivers and noncommutative Donaldson-Thomas theory

    Science.gov (United States)

    Cirafici, Michele; Sinkovics, Annamaria; Szabo, Richard J.

    2011-12-01

    We construct noncommutative Donaldson-Thomas invariants associated with abelian orbifold singularities by analyzing the instanton contributions to a six-dimensional topological gauge theory. The noncommutative deformation of this gauge theory localizes on noncommutative instantons which can be classified in terms of three-dimensional Young diagrams with a colouring of boxes according to the orbifold group. We construct a moduli space for these gauge field configurations which allows us to compute its virtual numbers via the counting of representations of a quiver with relations. The quiver encodes the instanton dynamics of the noncommutative gauge theory, and is associated to the geometry of the singularity via the generalized McKay correspondence. The index of BPS states which compute the noncommutative Donaldson-Thomas invariants is realized via topological quantum mechanics based on the quiver data. We illustrate these constructions with several explicit examples, involving also higher rank Coulomb branch invariants and geometries with compact divisors, and connect our approach with other ones in the literature.

  6. O Estado cristão em Thomas Hobbes

    Directory of Open Access Journals (Sweden)

    Daniel Artur Emidio Branco

    2016-12-01

    Full Text Available O presente artigo tem como finalidade a investigação do pensamento do filósofo inglês Thomas Hobbes (1588-1679, mais precisamente a relação entre Igreja e Estado, valendo-se de suas obras, em especial Leviatã (1651. Com o título O Estado Eclesiástico em Thomas Hobbes, o artigo busca mostrar como as conclusões de Hobbes acerca do papel da Igreja no Estado são relevantes para o século XXI. A concepção de Evangelho de Cristo como um reino de outro mundo, a natureza privada da fé, o pontificado do soberano como aquele que se posiciona está entre Deus e os homens, a união entre Lei Mosaica e Lei Natural e a união entre Igreja e Estado são os delimitadores do grande tema, que busca levar o leitor contemporâneo ao conhecimento das conclusões de Hobbes e, assim, considerar a aplicação das mesmas a sua geração.

  7. Some notes on time dependent Thomas Fermi approximation

    International Nuclear Information System (INIS)

    Holzwarth, G.

    1979-01-01

    The successful use of effective density-dependent potentials in static Hartree-Fock calculations for nuclear ground-state properties has led to the question whether it is possible to obtain significant further simplification by approximating also the kinetic energy part of the ground state energy by a functional of the local density alone. The great advantage of such an approach is that its complexity is independent of particle number; the size of the system enters only through parameters, Z and N. The simple 'extended Thomas Fermi' functionals are based on the assumption of a spherically symmetric local Fermi surface throughout the nucleus and they represent the 'liquid drop' part of the static total energy. Given this static formalism which is solved directly for the local density without considering individual particles one might ask for a possible dynamical extension in the same sense as TDHF is a dynamical extension of the static HF approach. The aim of such a Time Dependent Thomas Fermi (TDTF) approximation would be to determine directly the time-dependent local single-particle density from given initial conditions and the single-particle current density without following each particle on its individual orbit

  8. FEMALE SURVIVORS IN THOMAS HARDY‘S THE WITHERED ARM

    Directory of Open Access Journals (Sweden)

    Yulistiyanti Yulistiyanti

    2017-12-01

    Full Text Available This article discusses women position in society that Thomas Hardy portrays in his short story entitled The Withered Arm. This short story tells about two female character have closerelationship to the same man. The man comes from upper class. The first woman from lower class has a son of his, but they do not live together. Then, the second one is his new young wife. This short story takes rural area, Dorset as the setting of place where the society has intimate relationships and setting of time is in Victorian era. It applied feminism theory that focuses on male and female positions in society. Beauvoir (1949 considered that the male in French and Western societies defines what it means to be human and what it means to be female. The female becomes subordinate to the male. It applies qualitative analysis method. The text is analyzed relating to the female characters‘ position in society. Their positions make them get discrimination which society created. Thomas Hardy‘s short story will be analyzed on discrimination to female characters. The data shows that the two female characters are oppressed on their conditions. Although they do not get physical harassment, the oppression comes from social injustice that women do not get equal benefit and opportunities. Both of them survive to obtain what they need. These characters use their ways as the survivors because of unfair condition.

  9. Instantons, quivers and noncommutative Donaldson-Thomas theory

    Energy Technology Data Exchange (ETDEWEB)

    Cirafici, Michele, E-mail: cirafici@math.ist.utl.pt [Centro de Analise Matematica, Geometria e Sistemas Dinamicos, Departamento de Matematica, Instituto Superior Tecnico, Av. Rovisco Pais, 1049-001 Lisboa (Portugal); Sinkovics, Annamaria, E-mail: A.Sinkovics@damtp.cam.ac.uk [Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom); Szabo, Richard J., E-mail: R.J.Szabo@ma.hw.ac.uk [Department of Mathematics, Heriot-Watt University, Colin Maclaurin Building, Riccarton, Edinburgh EH14 4AS (United Kingdom); Maxwell Institute for Mathematical Sciences, Edinburgh (United Kingdom)

    2011-12-11

    We construct noncommutative Donaldson-Thomas invariants associated with abelian orbifold singularities by analyzing the instanton contributions to a six-dimensional topological gauge theory. The noncommutative deformation of this gauge theory localizes on noncommutative instantons which can be classified in terms of three-dimensional Young diagrams with a colouring of boxes according to the orbifold group. We construct a moduli space for these gauge field configurations which allows us to compute its virtual numbers via the counting of representations of a quiver with relations. The quiver encodes the instanton dynamics of the noncommutative gauge theory, and is associated to the geometry of the singularity via the generalized McKay correspondence. The index of BPS states which compute the noncommutative Donaldson-Thomas invariants is realized via topological quantum mechanics based on the quiver data. We illustrate these constructions with several explicit examples, involving also higher rank Coulomb branch invariants and geometries with compact divisors, and connect our approach with other ones in the literature.

  10. Vigencia de algunas de las ideas mercantilistas de Thomas Mun

    Directory of Open Access Journals (Sweden)

    Emmanuel Borgucci

    2011-01-01

    Full Text Available Generalmente cuando se aborda el mercantilismo se hace referencia a la acumulación de oro y plata, una balanza de pagos favorable o a la política económica de Jean Colbert. Pero poco se ha hablado del papel y condiciones necesarias del comerciante como agente que hizo posible que los primeros Estados-Nación se convirtieran en las futuras potencias económicas del mundo occidental. Thomas Mun fue uno de aquellos escritores mercantilistas que destacó el papel del comerciante en el auge del sistema mercantilista. El estudio de sus ideas permite concluir que sus recomendaciones acerca de lo que debería ser un comerciante de éxito siguen vigentes hoy en día. La razón de tal afirmación estriba en que sus recomendaciones eran adecuadas en un marco en que se estaba presentando una transformación significativa del sistema de organización comercial con la presencia de la Joint-Stock Company. Independientemente de que muchas de las funciones que Thomas Mun le atribuía al comerciante hoy en día son especializadas, su dominio sigue siendo la clave del éxito de una política comercial que emprenda cualquier nación.

  11. Thomas Willis: the faculties and his two cognitive frameworks.

    Science.gov (United States)

    McNabb, Jody

    2014-11-01

    Thomas Willis' 1664 study The anatomy of the brain is widely regarded as one of the first clinical studies of the brain. In Theanatomy, Thomas Willis explicitly connected the cognitive faculties and the nerves. Willis' later, 1672 work, The two discourses concerning the soul of brutes, severely undermined the materialism of Willis' first study: he affirmed dualism and cognitive immateriality; changed the anatomical locations of cognition; and reasserted a division between the rational and sensitive souls. His exact motive to return to orthodoxy is unclear, but contemporary scholarship of Willis has compounded the confusion with by relying predominantly on The soul of brutes instead of The anatomy. We trace Willis' career and examine his methodological practices, which help explain the historical practices and pressures. A closer examination of Willis' Anatomy of the brain reveals a much more materialistic account of the brain, the faculties, and nervous system. In this article, we present our own analysis of Willis' concept of rationality in the Anatomy and explain its importance for nervous physiology and understanding the analytic techniques for first defining faculty localizations. We then explain the role of the imagination and the immortal soul in the rearticulated anatomical concepts from The soulof brutes. Copyright © 2014 Elsevier Inc. All rights reserved.

  12. Philosophical Creationism: Thomas Aquinas’ Metaphysics of Creatio ex Nihilo

    Directory of Open Access Journals (Sweden)

    Andrzej Maryniarczyk

    2016-03-01

    Full Text Available All philosophers, beginning with the pre-Socratics, through Plato and Aristotle, and up to Thomas Aquinas, accepted as a certain that the world as a whole existed eternally. The foundation for the eternity of the world was the indestructible and eternal primal building material of the world, a material that existed in the form of primordial material elements (the Ionians, in the form of ideas (Plato, or in the form of matter, eternal motion, and the first heavens (Aristotle. The article outlines the main structure of the philosophical theory of creation ex nihilo developed by St. Thomas Aquinas and indebted to his metaphysical thought. It shows the wisdom-based and ratiocinative foundation of the rational cognition of reality—reality that comes from the personal creative act of God. It concludes that the perception that the beings called to existence by the personal act of God the Creator are intelligible is the ultimate rational justification for the fact that our human cognition, love, and spiritual creativity are rational.

  13. Thomas Hobbes: la resistencia política al Leviatán || Thomas Hobbes: Political Resistance To Leviathan

    Directory of Open Access Journals (Sweden)

    Diego Alejandro Fernández Peychaux

    2013-12-01

    Full Text Available RESUMEN En el presente artículo se presentan cuatro claves de lectura de la obra de Thomas Hobbes desde las que fundamentar una noción de resistencia. Este aporte busca, en otras palabras, crear las condiciones de posibilidad de un debate filosófico ofuscado por el mito recurrente sobre el supuesto monstruo de Malmesbury. Una vez hecho esto, se propone delinear las bases de un enfoque metodológico que parta de dicha noción de resistencia. De ese modo, se fundamentaría el primer paso hacia una apropiación ?o expropiación? contemporánea de la matriz hobbesiana de la relación obediencia-seguridad   ABSTRACT This article presents four key of readings about Thomas Hobbes's work, from which it supports a particular notion of resistance. In others words, this contribution searches to create the conditions of posibility for a philosophical debate obfuscated by the recurrent myth about the monster of Malmesbury. Once done that, I offer setting the bases of a metodological aproach which stars from this notion of resistance. Thus, I would back the first step towards a contemporary appropriation ?or expropriation? of the obedience-security relationship within the Hobbesian matrix.

  14. First record of Histiotus laephotis Thomas (Chiroptera, Vespertilionidae from Brazil Primeiro registro de Histiotus laephotis Thomas (Chiroptera, Vespertilionidae no Brasil

    Directory of Open Access Journals (Sweden)

    João M. D. Miranda

    2007-12-01

    Full Text Available The first record of Histiotus laephotis Thomas, 1916 from Brazil is reported here. An adult male was caught with a mist net in a barn located within an Araucaria pine forest in the municipality of Passos Maia, State of Santa Catarina, Southern Brazil (26º46'48"S and 52º03'34"W. This record extends the distribution of this species in South America. Morphological and taxonomic notes of this species are described as well.O primeiro registro de Histiotus laephotis Thomas, 1916 o Brasil é aqui reportado. Um macho adulto foi coletado com rede de neblina (em abrigo artificial nos domínios da Floresta com Araucária, no Município de Passos Maia, Estado de Santa Catarina, Sul do Brasil (26º46'48"S e 52º03'34"W. Este registro amplia a distribuição da própria espécie na América do Sul. Aspectos morfológicos e taxonômicos desta espécie são também descritos.

  15. Thomas Hobbes: la resistencia política al Leviatán || Thomas Hobbes: Political Resistance To Leviathan

    Directory of Open Access Journals (Sweden)

    Diego Alejandro Fernández Peychaux

    2013-12-01

    Full Text Available RESUMEN En el presente artículo se presentan cuatro claves de lectura de la obra de Thomas Hobbes desde las que fundamentar una noción de resistencia. Este aporte busca, en otras palabras, crear las condiciones de posibilidad de un debate filosófico ofuscado por el mito recurrente sobre el supuesto monstruo de Malmesbury. Una vez hecho esto, se propone delinear las bases de un enfoque metodológico que parta de dicha noción de resistencia. De ese modo, se fundamentaría el primer paso hacia una apropiación ?o expropiación? contemporánea de la matriz hobbesiana de la relación obediencia-seguridad   ABSTRACT This article presents four key of readings about Thomas Hobbes's work, from which it supports a particular notion of resistance. In others words, this contribution searches to create the conditions of posibility for a philosophical debate obfuscated by the recurrent myth about the monster of Malmesbury. Once done that, I offer setting the bases of a metodological aproach which stars from this notion of resistance. Thus, I would back the first step towards a contemporary appropriation ?or expropriation? of the obedience-security relationship within the Hobbesian matrix.  

  16. An overview of the user program for the Jefferson Lab free electron laser

    International Nuclear Information System (INIS)

    Dylla, H.F.

    1999-01-01

    Jefferson Lab is commissioning a high-average-power IR FEL during 1998. When driven with its superconducting linac operating in a recirculated mode, the IR Demo FEL is capable of producing kilowatt-level average power in the mid-infrared (2-7 mu m) range. With operational experience and hardware changes involving primarily change-out of the optical cavity mirrors, the FEL is capable of covering a wide range of the infrared (1-16 mu m) at power levels exceeding 100 W. This tuning range combined with a unique pulse structure makes the Jefferson Lab FEL a versatile research and development tool for a wide variety of laser applications. A core group of industrial partners has been involved in planning applications using the FEL since 1991. This initial user group was augmented with university partners in 1993 and with participants from several national laboratories in 1996-1997. With the initiation of construction of the FEL and the associated 600 m 2 user facility laboratory in 1996, a number of topical user groups were formed to plan and implement the first series of user experiments. The industrial partners have formed user groups planning applications in polymer surface processing, metal surface processing, microfabrication, and electronic materials. University partners have submitted proposals on basic science topics which complement and planned applied research topics, in addition to proposing experiments in atomic physics, chemical physics and materials science which take advantage of one or more of the unique characteristics of the FEL. A synopsis of the proposed user experiments for the first phase of operation of the Jefferson Lab FEL will be presented

  17. Cultural Resources Survey of Mobile Harbor, Alabama.

    Science.gov (United States)

    1983-01-01

    improvement from the point of view of supply and communication with other European settlements, since it cut the lightering distance to the capital in half...order to cut the costs of building (Bathe 1978:08.00-02; Millar 1978:15-29). 32 6e The sharing of ship builders, the borrowing of vessel lines and the... Eslava Street Mobile. Burned to water’s edge during overhaul. Notes: Served as HINGHAM in Boston Harbor; served as ORIENT in Long Island Sound. Operated

  18. CLAS+FROST: new generation of photoproduction experiments at jefferson lab

    International Nuclear Information System (INIS)

    Pasyuk, E.

    2009-01-01

    A large part of the experimental program in Hall B of the Jefferson Lab is dedicated to baryon spectroscopy. Photoproduction experiments are essential part of this program. CEBAF Large Acceptance Spectrometer (CLAS) and availability of circularly and linearly polarized tagged photon beams provide unique conditions for this type of experiments. Recent addition of the Frozen Spin Target (FROST) gives a remarkable opportunity to measure double and triple polarization observables for different pseudo-scalar meson photoproduction processes. For the first time, a complete or nearly complete experiment becomes possible and will allow model independent extraction of the reaction amplitude. An overview of the experiment and its current status is presented. (author)

  19. Upgraded photon calorimeter with integrating readout for the Hall A Compton polarimeter at Jefferson Lab

    International Nuclear Information System (INIS)

    Friend, M.; Parno, D.; Benmokhtar, F.; Camsonne, A.; Dalton, M.M.; Franklin, G.B.; Mamyan, V.; Michaels, R.; Nanda, S.; Nelyubin, V.; Paschke, K.; Quinn, B.; Rakhman, A.; Souder, P.; Tobias, A.

    2012-01-01

    The photon arm of the Compton polarimeter in Hall A of Jefferson Lab has been upgraded to allow for electron beam polarization measurements with better than 1% accuracy. The data acquisition (DAQ) system now includes an integrating mode, which eliminates several systematic uncertainties inherent in the original counting-DAQ setup. The photon calorimeter has been replaced with a Ce-doped Gd 2 SiO 5 crystal, which has a bright output and fast response, and works well for measurements using the new integrating method at electron beam energies from 1 to 6 GeV.

  20. Analysis of Deeply Virtual Compton Scattering data at Jefferson Lab and proton tomography

    Energy Technology Data Exchange (ETDEWEB)

    Dupre, R.; Guidal, M.; Niccolai, S. [Institut de Physique Nucleaire d' Orsay, CNRS-IN2P3, Universite Paris-Sud, Universite Paris-Saclay, Orsay (France); Vanderhaeghen, M. [Johannes Gutenberg-Universitaet, Institut fuer Kernphysik und PRISMA Cluster of Excellence, Mainz (Germany)

    2017-08-15

    The CLAS and Hall A Collaborations at Jefferson Laboratory have recently released new results for the ep → epγ reaction. We analyze these new data within the Generalized Parton Distribution formalism. Employing a fitter algorithm introduced and used in earlier works, we are able to extract from these data new constraints on the kinematical dependence of three Compton Form Factors. Based on experimental data, we subsequently extract the dependence of the proton charge radius on the quarks' longitudinal momentum fraction. (orig.)

  1. Hadronic Multi-Particle Final State Measurements with CLAS at Jefferson Lab

    International Nuclear Information System (INIS)

    Will Brooks

    2002-01-01

    Precision measurements in the neutrino sector are becoming increasingly feasible due to the development of relatively high-rate experimental capabilities. These important developments command renewed attention to the systematic corrections needed to interpret the data. Hadronic multi-particle final state measurements made using CLAS at Jefferson Lab, together with a broad theoretical effort that links electro-nucleus and neutrino-nucleus data, will address this problem, and will elucidate long-standing problems in intermediate energy nuclear physics. This new work will ultimately enable precision determinations of fundamental quantities such as the neutrino mixing matrix elements in detailed studies of neutrino oscillations

  2. Aerial gamma ray and magnetic survey, Jefferson City Quadrangle, Missouri. Final report

    International Nuclear Information System (INIS)

    1980-11-01

    The Jefferson City quadrangle covers approximately 7500 square miles at the Northwestern end of the Ozark uplift. Lithified material exposed, ranges in age from Cambrian through Pennsylvanian, but Pennsylvanian sediments dominate the surface as mapped. Some alluvium is mapped in river flood plain areas. A search of available literature revealed no known uranium deposits. A total of 95 uranium anomalies were detected and are discussed briefly in this report. All anomalies are related to cultural features, but those associated with coal mine tailings appear to have some significance. Magnetic data appear to relate to complexities in the underlying Precambrian rocks

  3. Spectroscopic Study of L Hypernuclei with Electron Beams at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, Satoshi [Tohoku Univ., Sendai (Japan); Gogami, Toshiyuki [Tohoku Univ., Sendai (Japan); Tang, Liguang [Hampton Univ., Hampton, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2017-07-01

    The missing mass spectroscopy of L hypernuclei with the (e, e'K^+) reaction was started from 2000 at Jefferson Lab. In this fifteen years, various hypernuclei (A = 7 - 52) including hyperon (L, S^0) productions have been studied with newly developed experimental techniques. The (e, e'K^+) reaction spectroscopy of L hypernuclei features its capability of absolute missing mass calibration and production of new species of hypernuclei which are the isospin partners of well studied hypernuclei by (K^-, pi-) and (pi^+, K^+) reactions. In this paper, we will review how we established the (e, e'K^+) spectroscopic study of hypernuclei.

  4. A RICH detector for strangeness physics in Hall A at Jefferson Lab

    International Nuclear Information System (INIS)

    Cusanno, F.; Garibaldi, F.; Cisbani, E.; Colilli, S.; De Cataldo, G.; De Leo, R.; Giuliani, F.; Gricia, M.; Lagamba, L.; Lucentini, M.; Reitz, B.; Santavenere, F.; Urciuoli, G.M.

    2004-01-01

    The high-resolution hypernuclear spectroscopy experiment at Jefferson Lab, Hall A (E94-107), needs unambiguous kaon identification. Due to the huge pion and proton background, the standard Hall A hadron particle identification, based on a time of flight and two aerogel threshold Cherenkov detectors, is not sufficient. For this task a proximity focusing C 6 F 14 /CsI RICH has been built. Recently, after some improvements to the mechanical structure of its wire chamber and to its electronics rate capability, the RICH has been tested with cosmic rays. This paper represents a status report of the RICH detector

  5. Pseudospread of the atlas: false sign of Jefferson fracture in young children

    International Nuclear Information System (INIS)

    Suss, R.A.; Zimmerman, R.D.; Leeds, N.E.

    1983-01-01

    Jefferson fractures are rare prior to teen-age. Three young children examined after trauma exhibited the characteristic spread appearance of the atlas, but fractures were excluded radiographically and clinically. A retrospective study demonstrated a similar appearance, termed pseudospread, in most children aged 3 months to 4 years, including over 90% during the second year. Pseudospread results from a discrepancy between the neural growth pattern of the atlas and the somatic pattern of the axis. An atlas spread index is defined and a normal range presented. When an atlas fracture is suggested by apparent lateral spread of the lateral atlas masses, computed tomography is useful to demonstrate an intact atlas ring

  6. Thomas Hiärne - nimi Rootsi Läänemereprovintside varasest ajalookirjutusest / Piret Lotman

    Index Scriptorium Estoniae

    Lotman, Piret, 1950-

    2008-01-01

    Thomase isa Erlandi karjäärist. Thomas Hiärne headest suhetest Eestimaa kindralkuberneri Bengt Horniga. Thomas Hiärne kandideerimisest Ingerimaa rüütelkonna sekretäri kohale. Tema tegevusest Virtsu mõisa inspektorina. Hiärne kroonikast ja ajalookäsitlusest

  7. Contributions to the knowledge of Banasa Stål (Hemiptera, Heteroptera, Pentatomidae: Banasa chaca Thomas

    Directory of Open Access Journals (Sweden)

    Thereza de Almeida Garbelotto

    2011-09-01

    Full Text Available Contributions to the knowledge of Banasa Stål (Hemiptera, Heteroptera, Pentatomidae: Banasa chaca Thomas. The male of Banasa chaca Thomas is described with emphasis on external and internal genitalia and the female internal genitalia is described. Banasa chaca is newly recorded from Buenos Aires Province (Argentina.

  8. 76 FR 58033 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2011-09-19

    ... DEPARTMENT OF THE INTERIOR National Park Service [2253-665] Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Thomas Burke Memorial Washington State Museum (Burke...

  9. 75 FR 78335 - Culturally Significant Objects Imported for Exhibition Determinations: “Thomas Lawrence: Regency...

    Science.gov (United States)

    2010-12-15

    ... DEPARTMENT OF STATE [Public Notice 7268] Culturally Significant Objects Imported for Exhibition Determinations: ``Thomas Lawrence: Regency Power and Brilliance'' SUMMARY: Notice is hereby given of the... determine that the objects to be included in the exhibition ``Thomas Lawrence: Regency Power and Brilliance...

  10. 78 FR 45958 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2013-07-30

    ... DEPARTMENT OF THE INTERIOR National Park Service [NPS-WASO-NAGPRA-13406; PPWOCRADN0-PCU00RP14.R50000] Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Thomas Burke...

  11. 77 FR 46117 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2012-08-02

    ... DEPARTMENT OF THE INTERIOR National Park Service [NPS-WASO-NAGPRA-10823; 2200-1100-665] Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Thomas Burke Memorial Washington...

  12. 78 FR 11675 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2013-02-19

    ... DEPARTMENT OF THE INTERIOR National Park Service [NPS-WASO-NAGPRA-12080;2200-1100-665] Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Thomas Burke Memorial Washington...

  13. 75 FR 36671 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2010-06-28

    ... DEPARTMENT OF THE INTERIOR National Park Service Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA; Correction AGENCY: National Park... human remains and associated funerary objects in the possession of the Thomas Burke Memorial Washington...

  14. 78 FR 59963 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2013-09-30

    ... DEPARTMENT OF THE INTERIOR National Park Service [NPS-WASO-NAGPRA-13770; PPWOCRADN0-PCU00RP14.R50000] Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of..., Interior. ACTION: Notice. SUMMARY: The Thomas Burke Memorial Washington State Museum, University of...

  15. 76 FR 58034 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2011-09-19

    ... DEPARTMENT OF THE INTERIOR National Park Service [2253-665] Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Thomas Burke Memorial Washington State Museum (Burke...

  16. 76 FR 58031 - Notice of Intent To Repatriate Cultural Items: Thomas Burke Memorial Washington State Museum...

    Science.gov (United States)

    2011-09-19

    ... DEPARTMENT OF THE INTERIOR National Park Service [2253-665] Notice of Intent To Repatriate Cultural Items: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Thomas Burke Memorial Washington State Museum...

  17. 76 FR 58039 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2011-09-19

    ... DEPARTMENT OF THE INTERIOR National Park Service [2253-665] Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Thomas Burke Memorial Washington State Museum (Burke...

  18. 78 FR 44595 - Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of...

    Science.gov (United States)

    2013-07-24

    ... DEPARTMENT OF THE INTERIOR National Park Service [NPS-WASO-NAGPRA-13407; PPWOCRADN0-PCU00RP14.R50000] Notice of Inventory Completion: Thomas Burke Memorial Washington State Museum, University of Washington, Seattle, WA AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Thomas Burke...

  19. Thomas Mofolo: the man, the writer and his contexts | Gill | Tydskrif ...

    African Journals Online (AJOL)

    For example, as a boy, we learn that Thomas imbibed a great deal from his father Abner Ramofolo Mofolo, a very hard-working and practically-oriented man, who was himself a gifted storyteller. Given the possibility of pursuing higher studies through the Protestant PEMS Mission, Thomas grabbed this opportunity and came ...

  20. Time-dependent Thomas-Fermi approach to nuclear monopole oscillations

    International Nuclear Information System (INIS)

    Pi, M.; Barranco, M.; Nemeth, J.; Ngo, C.; Tomasi, E.

    1985-10-01

    A Time-dependent Thomas-Fermi (TDTF) method has been used to study nuclear monopole oscillations and in particular, the semiclassical strength function S(E). An analysis of the S(E) moments, obtained by suitable integrations, shows that these results are in good agreement with data previously obtained from static Thomas-Fermi calculations

  1. 77 FR 50916 - Safety Zone; Boston Harbor's Rock Removal Project, Boston Inner Harbor, Boston, MA

    Science.gov (United States)

    2012-08-23

    ... operation on the navigable waters of Boston Inner Harbor, in the main ship channel near Castle Island. This... operations in support of the U.S. Army Corps of Engineers rock removal project. Entering into, transiting... before the start date of the project. The U.S. Army Corps of Engineers also discussed the rock removal...

  2. Physical data from CTD casts in the North Pacific Ocean from the THOMAS G. THOMPSON and the THOMAS WASHINGTON in support of the Marathon 2 Project from 05 May 1985 to 07 September 1987 (NODC Accession 9400131)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature and salinity profiles were collected from CTD casts in the North Pacific Ocean from the THOMAS G. THOMPSON and the THOMAS WASHINGTON. Data were collected...

  3. Green leviathan? Thomas hobbes, joel bakan and Arnold schwarzenegger.

    Science.gov (United States)

    Evans, Robert G

    2007-02-01

    Thomas Hobbes postulates that men are driven by "a perpetual and restless desire of power after power, that ceaseth only in death." The miserable consequences of this drive for power and the competing "desire of ease and sensual delight" and "fear of death and wounds" lead them to establish and obey. Substituting "profit" for "power" yields a description of the modern corporation, but without the desires or fears of natural persons. Such "unnatural persons" lack the Hobbesian ground of obligation, yet have appropriated the privileges and protections of natural persons. They challenge or undermine the sovereign wherever it limits their profits. Governor Schwarzenegger's re-election in California, however, on a strong anti-CO(2) program, suggests a willingness by threatened natural persons to re-empower Leviathan.

  4. Las revoluciones de Thomas Kuhn, una mirada discontinuista

    Directory of Open Access Journals (Sweden)

    Pablo Melogno

    Full Text Available Resumen Se discuten algunas divergencias entre La revolución copernicana (1957 y La estructura de las revoluciones científicas (1962, de Thomas Kuhn. Se muestra que presentan una consideración diferente de los factores extracientíficos, que tienen en la primera un peso explicativo mayor. Se propone que en 1957 Kuhn maneja una historiografía casuística, centrada en la revolución copernicana, y en 1962 una historiografía estructural, centrada en los rasgos invariantes de las revoluciones científicas. Se concluye que las diferencias entre las dos obras son lo suficientemente profundas como para no considerarlas expresión de una misma visión de la ciencia.

  5. A Tony Thomas-Inspired Guide to INSPIRE

    Energy Technology Data Exchange (ETDEWEB)

    O' Connell, Heath B.; /Fermilab

    2010-04-01

    The SPIRES database was created in the late 1960s to catalogue the high energy physics preprints received by the SLAC Library. In the early 1990s it became the first database on the web and the first website outside of Europe. Although indispensible to the HEP community, its aging software infrastructure is becoming a serious liability. In a joint project involving CERN, DESY, Fermilab and SLAC, a new database, INSPIRE, is being created to replace SPIRES using CERN's modern, open-source Invenio database software. INSPIRE will maintain the content and functionality of SPIRES plus many new features. I describe this evolution from the birth of SPIRES to the current day, noting that the career of Tony Thomas spans this timeline.

  6. A Tony Thomas-Inspired Guide to INSPIRE

    International Nuclear Information System (INIS)

    O'Connell, Heath B.

    2010-01-01

    The SPIRES database was created in the late 1960s to catalogue the high energy physics preprints received by the SLAC Library. In the early 1990s it became the first database on the web and the first website outside of Europe. Although indispensible to the HEP community, its aging software infrastructure is becoming a serious liability. In a joint project involving CERN, DESY, Fermilab and SLAC, a new database, INSPIRE, is being created to replace SPIRES using CERN's modern, open-source Invenio database software. INSPIRE will maintain the content and functionality of SPIRES plus many new features. I describe this evolution from the birth of SPIRES to the current day, noting that the career of Tony Thomas spans this timeline.

  7. Thomas Grisso: Award for Distinguished Professional Contributions to Applied Research.

    Science.gov (United States)

    2014-11-01

    The Award for Distinguished Professional Contributions to Applied Research is given to a psychologist whose research has led to important discoveries or developments in the field of applied psychology. To be eligible, this research should have led to innovative applications in an area of psychological practice, including but not limited to assessment, consultation, instruction, or intervention (either direct or indirect). The 2014 recipient is Thomas Grisso. Grisso "has made seminal contributions to the field of forensic psychology and psychiatry through his internationally renowned program of research, which has directly impacted juvenile justice reform worldwide." Grisso's award citation, biography, and a selected bibliography are presented here. PsycINFO Database Record (c) 2014 APA, all rights reserved.

  8. Whistles, bells, and cogs in machines: Thomas Huxley and epiphenomenalism.

    Science.gov (United States)

    Greenwood, John

    2010-01-01

    In this paper I try to shed some historical light upon the doctrine of epiphenomenalism, by focusing on the version of epiphenomenalism championed by Thomas Huxley, which is often treated as a classic statement of the doctrine. I argue that it is doubtful if Huxley held any form of metaphysical epiphenomenalism, and that he held a more limited form of empirical epiphenomenalism with respect to consciousness but not with respect to mentality per se. Contrary to what is conventionally supposed, Huxley's empirical epiphenomenalism with respect to consciousness was not simply based upon the demonstration of the neurophysiological basis of conscious mentality, or derived from the extension of mechanistic and reflexive principles of explanation to encompass all forms of animal and human behavior, but was based upon the demonstration of purposive and coordinated animal and human behavior in the absence of consciousness. Given Huxley's own treatment of mentality, his characterization of animals and humans as "conscious automata" was not well chosen.

  9. "German Culture is where I am": Thomas Mann in Exile

    Directory of Open Access Journals (Sweden)

    Helmut Koopmann

    1982-09-01

    Full Text Available Thomas Mann in exile reacted like many writers expelled from Germany: totally irritated he tried to defend his own identity by claiming that he was still the leading representative of Germany. But about 1938 a process of dissociation from Germany started which led to sharp remarks on Germany in his The Beloved Returns , to his conviction that German culture was where he lived and to the acknowledgement of America as his new home. Traces of his experience of exile, and a late answer on his separation from Germany in 1933, however, are to be found even in his incompleted novel Felix Krull which seems to have turned the disgusting experience of exile into friendly mythological light.

  10. Thomas-Fermi theory for atomic nuclei revisited

    International Nuclear Information System (INIS)

    Centelles, M.; Schuck, P.; Vinas, X.

    2007-01-01

    The recently developed semiclassical variational Wigner-Kirkwood (VWK) approach is applied to finite nuclei using external potentials and self-consistent mean fields derived from Skyrme interactions and from relativistic mean field theory. VWK consists of the Thomas-Fermi part plus a pure, perturbative h 2 correction. In external potentials, VWK passes through the average of the quantal values of the accumulated level density and total energy as a function of the Fermi energy. However, there is a problem of overbinding when the energy per particle is displayed as a function of the particle number. The situation is analyzed comparing spherical and deformed harmonic oscillator potentials. In the self-consistent case, we show for Skyrme forces that VWK binding energies are very close to those obtained from extended Thomas-Fermi functionals of h 4 order, pointing to the rapid convergence of the VWK theory. This satisfying result, however, does not cure the overbinding problem, i.e., the semiclassical energies show more binding than they should. This feature is more pronounced in the case of Skyrme forces than with the relativistic mean field approach. However, even in the latter case the shell correction energy for e.g., 208 Pb turns out to be only ∼-6 MeV what is about a factor two or three off the generally accepted value. As an ad hoc remedy, increasing the kinetic energy by 2.5%, leads to shell correction energies well acceptable throughout the periodic table. The general importance of the present studies for other finite Fermi systems, self-bound or in external potentials, is pointed out

  11. An overview of recent nucleon spin structure measurements at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Allada, Kalyan [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2016-02-01

    Jefferson Lab have made significant contributions to improve our knowledge of the longitudinal spin structure by measuring polarized structure functions, g1 and g2, down to Q2 = 0.02 GeV2. The low Q2 data is especially useful in testing the Chiral Perturbation theory (cPT) calculations. The spin-dependent sum rules and the spin polarizabilities, constructed from the moments of g1 and g2, provide an important tool to study the longitudinal spin structure. We will present an overview of the experimental program to measure these structure functions at Jefferson Lab, and present some recent results on the neutron polarizabilities, proton g1 at low Q2, and proton and neutron d2 measurement. In addition to this, we will discuss the transverse spin structure of the nucleon which can be accessed using chiral-odd transversity distribution (h1), and show some results from measurements done on polarized 3He target in Hall A.

  12. GlueX: The Search for Gluonic Excitations at Jefferson Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    D.S. Carman

    2005-08-21

    One of the unanswered and most fundamental questions in physics regards the nature of the confinement mechanism of quarks and gluons in quantum chromodynamics (QCD). Exotic hybrid mesons manifest gluonic degrees of freedom and their detailed spectroscopy will provide the precision data necessary to test assumptions in lattice QCD and the specific phenomenology leading to confinement. Photoproduction is expected to be a particularly effective manner to produce exotic hybrids, however, existing data using photon beams are sparse. At Jefferson Laboratory, plans are underway by the GlueX Collaboration to use the coherent bremsstrahlung technique to produce a linearly polarized photon beam. A solenoid-based hermetic detector will be used to collect data on meson production and decays with statistics that will exceed existing photoproduction data by several orders of magnitude after the first year of running. In order to reach the ideal photon energy of 9 GeV required for these studies, the energy of the Jefferson Laboratory electron accelerator, CEBAF, will be doubled from its current maximum energy of 6 GeV to 12 GeV. The physics motivating the search and the status of the project are reviewed.

  13. Vibration-based structural health monitoring of harbor caisson structure

    Science.gov (United States)

    Lee, So-Young; Lee, So-Ra; Kim, Jeong-Tae

    2011-04-01

    This study presents vibration-based structural health monitoring method in foundation-structure interface of harbor caisson structure. In order to achieve the objective, the following approaches are implemented. Firstly, vibration-based response analysis method is selected and structural health monitoring (SHM) technique is designed for harbor caisson structure. Secondly, the performance of designed SHM technique for harbor structure is examined by FE analysis. Finally, the applicability of designed SHM technique for harbor structure is evaluated by dynamic tests on a lab-scaled caisson structure.

  14. Electroproduction of neutral pions in the Hall A at the Jefferson Laboratory; Electroproduction de pions neutres dans le Hall A au Jefferson Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Fuchey, Eric [Blaise Pascal Univ., Aubiere (France)

    2010-06-01

    The past decade has seen a strong evolution of the study of the hadron structure through exclusive processes, allowing to access to a more complete description of this structure. Exclusive processes include DVCS (Deeply Virtual Compton Scattering) as well as hard exclusive meson production. This document is particularly focussed on the latter, and more particularly on exclusive neutral pion production. In this thesis is described the analysis of triple coincidence events H(e, e'γγ)X, which were a consequent by-product of the DVCS experiment which occured during Fall 2004 at Jefferson Lab Hall A, to extract the ep → epπ0 cross section. This cross section has been measured at two values of four-momentum transfer Q2 = 1.9 GeV2 and Q2 = 2.3 GeV2. The statistical precision for these measurements is achieved at better than 5 %. The kinematic range allows to study the evolution of the extracted cross section as a function of Q2 and W. Results are be confronted with Regge inspired calculations and Generalized (GPD) predictions. An intepretation of our

  15. Hazardous substances shipping at inland water harbors

    International Nuclear Information System (INIS)

    Benkovic, Z.

    2009-01-01

    Safety measures and regulations system covering the aspects of fire protection, professional and ecological safety are aimed to create a safe working environment, by detection and remedy of conditions that are potentially hazardous for the well-being of the employees or are leading to certain undesired events. Such unwanted incidents may result in different consequences: operating person's injury, environment pollution or material damage. This study attempts to illustrate the organization of work during hazardous matter loading and unloading at inland water harbors, based on legal provisions and decrees involving safety precautions, and in order to achieve constant enhancement of operating procedure, decreasing thereby the number of work-related injuries and various accidental situations. Fundamental precondition required to prevent possible accidents and to optimize general safety policy is to recognize and control any danger or potential hazard, as well as to be familiar with the legal provisions covering the inland waterway transport of harmful substances.(author)

  16. The light bulb, cystoscopy, and Thomas Alva Edison.

    Science.gov (United States)

    Moran, Michael E

    2010-09-01

    Thomas Alva Edison was an icon of American achievement who literally invented the 20th century. Although best known as the inventor of the electric light bulb, the phonograph, and motion pictures, he also left a lasting legacy via peripheral developmental applications, such as endoscopes. A review of published urologic writings about incandescent cystoscopes was cross-referenced to writings about or from Edison. Important events that allowed transference of technology from the Edison laboratory to clinical practice were emphasized. Edison was born in 1847 while Lincoln was serving in Congress; he died in 1931 when Hoover struggled with the Great Depression. Edison's life spanned the formative period of America that Henry Adams called the "coming of age." Edison received a Sprengel vacuum device in late 1879, and as usual, he was able to tweak the machine to better performance. For 5 days in October, 16 to 21, he improved the vacuum from 1/100,000 to 1/1,000,000 atm, and his first incandescent bulb burned softly. On December 21, 1879, he leaked the story to N.Y. Herald journalist Marshall Fox, and the world was notified of the light bulb. Special Christmas light visits started in Menlo Park just 4 days later. Edison patented the screw cap for easy changes, and the first bulbs sold for 40 cents (cost $1.40). 100,000 bulbs sold in 1882, 4 million by 1892, and 45 million in 1903. Immediately, competitors and specialty manufacturers entered the market. Dr. Henry Koch and Charles Preston in Rochester, N.Y., developed a smaller, low amperage bulb that could be fitted to medical devices. No discussion of electricity and modern applications would be complete without some discussion of Thomas Alva Edison and his sentinel contributions. The first church, post office, and ship were illuminated in 1892. The first hotel, theater, and electric sign were in 1893. The rapidity of dispersal and secondary applications of Edison's inventions is typified by the rise of cystoscopes

  17. 33 CFR 80.1460 - Kahului Harbor, Maui, HI.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Kahului Harbor, Maui, HI. 80.1460 Section 80.1460 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Pacific Islands § 80.1460 Kahului Harbor, Maui, HI. A line drawn...

  18. 33 CFR 80.1450 - Nawiliwili Harbor, Kauai, HI.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Nawiliwili Harbor, Kauai, HI. 80.1450 Section 80.1450 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Pacific Islands § 80.1450 Nawiliwili Harbor, Kauai, HI...

  19. 33 CFR 110.238 - Apra Harbor, Guam.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Apra Harbor, Guam. 110.238 Section 110.238 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.238 Apra Harbor, Guam. (a) The anchorage grounds (Datum: WGS...

  20. 33 CFR 80.1470 - Kawaihae Harbor, Hawaii, HI.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Kawaihae Harbor, Hawaii, HI. 80.1470 Section 80.1470 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Pacific Islands § 80.1470 Kawaihae Harbor, Hawaii, HI...

  1. 33 CFR 80.1480 - Hilo Harbor, Hawaii, HI.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Hilo Harbor, Hawaii, HI. 80.1480 Section 80.1480 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Pacific Islands § 80.1480 Hilo Harbor, Hawaii, HI. A line drawn...

  2. 33 CFR 110.208 - Buffalo Harbor, N.Y.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Buffalo Harbor, N.Y. 110.208 Section 110.208 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.208 Buffalo Harbor, N.Y. (a) The anchorage grounds—(1...

  3. 32 CFR 705.31 - USS Arizona Memorial, Pearl Harbor.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 5 2010-07-01 2010-07-01 false USS Arizona Memorial, Pearl Harbor. 705.31... NAVY REGULATIONS AND OFFICIAL RECORDS PUBLIC AFFAIRS REGULATIONS § 705.31 USS Arizona Memorial, Pearl Harbor. (a) Limited space and the desirability of keeping the Memorial simple and dignified require the...

  4. 76 FR 50489 - Agency Information Collection Activities: Harbor Maintenance Fee

    Science.gov (United States)

    2011-08-15

    ... Activities: Harbor Maintenance Fee AGENCY: U.S. Customs and Border Protection, Department of Homeland... Fee (CBP Forms 349 and 350). This is a proposed extension of an information collection that was... Fee. OMB Number: 1651-0055. Form Number: CBP Forms 349 and 350. Abstract: The Harbor Maintenance Fee...

  5. 76 FR 70110 - Foreign-Trade Zone 109-County of Jefferson, NY; Application for Reorganization and Expansion...

    Science.gov (United States)

    2011-11-10

    ... Coffeen Street, Watertown; and, Site 2 (16 acres)--Dexter Sulphite Mill, 349 Lakeview Dr. & Stockton Avenue, Dexter. The grantee's proposed service area under the ASF would be the County of Jefferson, New..., NYS Route 12F, 22529 Airport Drive, Dexter. The ASF allows for the possible exemption of one magnet...

  6. Proposed measurement of tagged deep inelastic scattering in Hall A of Jefferson lab

    Energy Technology Data Exchange (ETDEWEB)

    Montgomery, Rachel [Univ. of Glasgow, Scotland (United Kingdom); Annand, John [Univ. of Glasgow, Scotland (United Kingdom); Dutta, Dipangkar [Mississippi State Univ., Mississippi State, MS (United States); Keppel, Cynthia E. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); King, Paul [The Ohio State Univ., Columbus, OH (United States). Dept of Physics; Wojtsekhowski, Bogdan [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Zhang, Jixie [Univ. of Virginia, Charlottesville, VA (United States)

    2017-03-01

    A tagged deep inelastic scattering (TDIS) experiment is planned for Hall A of Jefferson Lab, which will probe the mesonic content of the nucleon directly. Low momentum recoiling (and spectator) protons will be measured in coincidence with electrons scattered in a deep inelastic regime from hydrogen (and deuterium) targets, covering kinematics of 8 < W2 < 18 GeV2, 1 < Q2 < 3 (GeV/c)2 and 0:05 < x < 0:2. The tagging technique will help identify scattering from partons in the meson cloud and provide access to the pion structure function via the Sullivan process. The experiment will yield the first TDIS results in the valence regime, for both proton and neutron targets. We present here an overview of the experiment.

  7. The New 2nd-Generation SRF RandD Facility at Jefferson Lab: TEDF

    International Nuclear Information System (INIS)

    Reece, Charles E.; Reilly, Anthony V.

    2012-01-01

    The US Department of Energy has funded a near-complete renovation of the SRF-based accelerator research and development facilities at Jefferson Lab. The project to accomplish this, the Technical and Engineering Development Facility (TEDF) Project has completed the first of two phases. An entirely new 3,100 m 2 purpose-built SRF technical work facility has been constructed and was occupied in summer of 2012. All SRF work processes with the exception of cryogenic testing have been relocated into the new building. All cavity fabrication, processing, thermal treatment, chemistry, cleaning, and assembly work is collected conveniently into a new LEED-certified building. An innovatively designed 800 m2 cleanroom/chemroom suite provides long-term flexibility for support of multiple RandD and construction projects as well as continued process evolution. The characteristics of this first 2nd-generation SRF facility are described

  8. Deeply Virtual Pseudoscalar Meson Production at Jefferson Lab and Transversity GPDs

    Energy Technology Data Exchange (ETDEWEB)

    Kubarovsky, Valery P. [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2016-02-01

    Transverse-momentum dependent parton distribution functions (TMDs) provide a description of nucleon structure in terms of the parton transverse momentum and its transverse spin. At leading twist there are eight TMDs, each offering a unique feature of quarks in a polarized or an unpolarized nucleon. The Sivers distribution is one of the most interesting TMD due to its non-universality. It has been extracted using the data from semi-inclusive deep-inelastic scattering (SIDIS), but there is no data yet from spin-dependent Drell-Yan (DY) process. Such measurement will provide a crucial test of TMD formalism which predicts an equal magnitude and opposite sign for the Sivers function extracted from SIDIS and DY process. We will discuss key future measurements of TMDs using both SIDIS and DY process with a focus on Hall A SoLID SIDIS program at Jefferson Lab.

  9. First experimental data on the FEL - RF interaction at the Jefferson Lab IRFEL

    International Nuclear Information System (INIS)

    L. Merminga; P. Alexeev; S.V. Benson; A. Bolshakov; L.R. Doolittle; D.R. Douglas; C. Hovater; G.R. Neil

    1999-01-01

    High power FELs driven by recirculating, energy-recovering linacs can exhibit instabilities in the beam energy and laser output power. Fluctuations in the accelerating cavity fields can cause beam loss on apertures, phase oscillations and optical cavity detuning. These can affect the laser power and in turn the beam-induced voltage to further enhance the fluctuations of the rf fields. A theoretical model was developed to study the dynamics of the coupled system and was presented last year. Recently, a first set of experimental data was obtained at the Jefferson Lab IRFEL for direct comparisons with the model. The authors describe the experiment, present the data together with the modeling predictions and outline future directions

  10. Deeply virtual Compton scattering in the Hall A of Jefferson laboratory

    International Nuclear Information System (INIS)

    Munoz Camacho, C.

    2005-12-01

    Generalized Parton Distributions (GPDs), introduced in the late 90's, provide a universal description of hadrons in terms of the underlying degrees of freedom of Quantum Chromodynamics: quarks and gluons. GPDs appear in a wide variety of hard exclusive reactions and the advent of high luminosity accelerator facilities has made the study of GPDs accessible to experiment. Deeply Virtual Compton Scattering (DVCS) is the golden process involving GPDs. The first dedicated DVCS experiment ran in the Hall A of Jefferson Lab in Fall 2004. An electromagnetic calorimeter and a plastic scintillator detector were constructed for this experiment, together with specific electronics and acquisition system. The experiment preparation, data taking and analysis are described in this document. Results on the absolute cross section difference for opposite beam helicities provide the first measurement of a linear combination of GPDs as a function of the momentum transfer to the nucleon. (author)

  11. Spatial analysis of geologic and hydrologic features relating to sinkhole occurrence in Jefferson County, West Virginia

    Science.gov (United States)

    Doctor, Daniel H.; Doctor, Katarina Z.

    2012-01-01

    In this study the influence of geologic features related to sinkhole susceptibility was analyzed and the results were mapped for the region of Jefferson County, West Virginia. A model of sinkhole density was constructed using Geographically Weighted Regression (GWR) that estimated the relations among discrete geologic or hydrologic features and sinkhole density at each sinkhole location. Nine conditioning factors on sinkhole occurrence were considered as independent variables: distance to faults, fold axes, fracture traces oriented along bedrock strike, fracture traces oriented across bedrock strike, ponds, streams, springs, quarries, and interpolated depth to groundwater. GWR model parameter estimates for each variable were evaluated for significance, and the results were mapped. The results provide visual insight into the influence of these variables on localized sinkhole density, and can be used to provide an objective means of weighting conditioning factors in models of sinkhole susceptibility or hazard risk.

  12. Determination of the Optimal Operating Parameters for Jefferson Laboratory's Cryogenic Cold Compressor Systems

    Energy Technology Data Exchange (ETDEWEB)

    Wilson, Jr., Joe D. [Christopher Newport Univ., Newport News, VA (United States)

    2003-01-01

    The technology of Jefferson Laboratory's (JLab) Continuous Electron Beam Accelerator Facility (CEBAF) and Free Electron Laser (FEL) requires cooling from one of the world's largest 2K helium refrigerators known as the Central Helium Liquefier (CHL). The key characteristic of CHL is the ability to maintain a constant low vapor pressure over the large liquid helium inventory using a series of five cold compressors. The cold compressor system operates with a constrained discharge pressure over a range of suction pressures and mass flows to meet the operational requirements of CEBAF and FEL. The research topic is the prediction of the most thermodynamically efficient conditions for the system over its operating range of mass flows and vapor pressures with minimum disruption to JLab operations. The research goal is to find the operating points for each cold compressor for optimizing the overall system at any given flow and vapor pressure.

  13. Assessing environmental risk of the retired filter bed area, Battelle West Jefferson

    International Nuclear Information System (INIS)

    Miller, S.F.; Thompson, M.D.; Glennon, M.A.

    1997-04-01

    Initial investigations conducted by the U.S. Department of Energy, Chicago Operations Office, and by Argonne National Laboratory used seismic refraction profiling, electrical resistivity depth sounding, conductivity profiling, magnetic gradiometry, and ground-penetrating radar to study environmental geophysics in the area of the Battelle West Jefferson site's radiologically contaminated retired filter beds. The investigators used a combination of nonintrusive technologies and innovative drilling techniques to assess environmental risk at the filter beds and to improve understanding of the geology of the Big Darby Creek floodplain. The geophysical investigation, which showed that the preferred groundwater pathway is associated with a laterally extensive deposit of silty sand to sand that is less than 12 ft deep in the floodplain area, also guided the location of cone penetrometer test sites and piezometer installation. Cone penetrometer testing was useful for comparing continuous logging data with surface geophysical data in establishing correlations among unconsolidated materials

  14. Preliminary Results from Integrating Compton Photon Polarimetry in Hall A of Jefferson Lab

    International Nuclear Information System (INIS)

    Parno, D; Friend, M; Benmokhtar, F; Franklin, G; Quinn, B; Michaels, R; Nanda, S; Souder, P

    2011-01-01

    A wide range of nucleon and nuclear structure experiments in Jefferson Lab's Hall A require precise, continuous measurements of the polarization of the electron beam. In our Compton polarimeter, electrons are scattered off photons in a Fabry-Perot cavity; by measuring an asymmetry in the integrated signal of the scattered photons detected in a GSO crystal, we can make non-invasive, continuous measurements of the beam polarization. Our goal is to achieve 1% statistical error within two hours of running. We discuss the design and commissioning of an upgrade to this apparatus, and report preliminary results for experiments conducted at beam energies from 3.5 to 5.9 GeV and photon rates from 5 to 100 kHz.

  15. Future Measurements of the Nucleon Elastic Electromagnetic Form Factors at Jefferson Lab

    Science.gov (United States)

    Gilfoyle, Gerard

    2018-01-01

    The elastic, electromagnetic form factors are fundamental observables that describe the internal structure of protons, neutrons, and atomic nuclei. Jefferson Lab in the United States has completed the 12 GeV Upgrade that will open new opportunities to study the form factors. A campaign to measure all four nucleon form factors (electric and magnetic ones for both proton and neutron) has been approved consisting of seven experiments in Halls A, B, and C. The increased energy of the electron beam will extend the range of precision measurements to higher Q2 for all four form factors together. This combination of measurements will allow for the decomposition of the results into their quark components and guide the development of a QCD-based understanding of nuclei in the non-perturbative regime. I will present more details on the 12 GeV Upgrade, the methods used to measure the form factors, and what we may learn.

  16. The aerogel threshold Cherenkov detector for the high momentum spectrometer in Hall C at Jefferson lab

    International Nuclear Information System (INIS)

    Razmik Asaturyan; Rolf Ent; Howard Fenker; David Gaskell; Garth Huber; Mark Jones; David Mack; Hamlet Mkrtchyan; Bert Metzger; Nadia Novikoff; Vardan Tadevosyan; William Vulcan; Stephen Wood

    2004-01-01

    We describe a new aerogel threshold Cherenkov detector installed in the HMS spectrometer in Hall C at Jefferson Lab. The Hall C experimental program in 2003 required an improved particle identification system for better identification of π/K/p, which was achieved by installing an additional threshold Cherenkov counter. Two types of aerogel with n = 1.03 and n = 1.015 allow one to reach ∼10 -3 proton and 10 -2 kaon rejection in the 1-5 GeV/c momentum range with pion detection efficiency better than 99% (97%). The detector response shows no significant position dependence due to a diffuse light collection technique. The diffusion box was equipped with 16 Photonis XP4572 PMT's. The mean number of photoelectrons in saturation was ∼16 and ∼8, respectively. Moderate particle identification is feasible near threshold

  17. New Results on Testing Duality in Spin Structure from Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Nilanga Liyanage

    2005-10-01

    The Bloom-Gilman duality has been experimentally demonstrated for spin independent structure functions. Duality is observed when the smooth scaling curve at high momentum transfer is an average over the resonance bumps at lower momentum transfer, but at the same value of scaling variable x. Signs of quark-hadron duality for the spin Dependant structure function g1 of the proton has been recently reported by the Hermes collaboration. Experimental Halls A, B and C at Jefferson lab have recently measured spin structure functions in the resonance region for the proton and the neutron. Data from these experiments combined with Deep-Inelastic-Scattering data provide a precision test of quark-hadron duality predictions for spin structure functions for both the proton and the neutron. This will be one of the first precision tests of spin and flavor dependence of quark-hadron duality.

  18. Performance report of the U.S. Department of Energy's Jefferson Lab

    International Nuclear Information System (INIS)

    Jefferson Lab

    1999-01-01

    Jefferson Lab, the newest of the US Department of Energy's 16 national laboratories, has been functioning effectively since its inception in 1984, first during construction and later during operations. As shown in this report, JLab aligns itself directly with DOE's strategic planning, both in terms of laboratory visions and plans and in terms of actual laboratory performance. Most importantly, JLab contributes significantly to DOE's Science and Technology mission in the area of nuclear physics, under the Office of Science. The laboratory practices continuous improvement and has made a number of important effectiveness and efficiency enhancements in recent years. Laboratory performance has been demonstrated by completion of the construction phase on cost and schedule, by exceeding technical specifications when coming on-line for physics research, and then - during operations in the mid- and late- 1990's - by the application of the performance measures in the laboratory's performance-based contract with DOE

  19. The Jefferson Lab Quality Assurance Program for the SNS Superconducting Linac Construction Project

    International Nuclear Information System (INIS)

    Joseph Ozelis

    2003-01-01

    As part of a multi-laboratory collaboration, Jefferson Lab is currently engaged in the fabrication, assembly, and testing of 23 cryomodules for the superconducting linac portion of the Spallation Neutron Source (SNS) being built at Oak Ridge National Laboratory. As with any large accelerator construction project, it is vitally important that these components be built in a cost effective and timely manner, and that they meet the stringent performance requirements dictated by the project specifications. A comprehensive Quality Assurance (QA) program designed to help accomplish these goals has been implemented as an inherent component of JLab's SNS construction effort. This QA program encompasses the traditional spectrum of component performance, from incoming parts inspection, raw materials testing, through to sub-assembly and finished article performance evaluation

  20. Thomas Hardy, Provincial Geology and the Material Imagination

    Directory of Open Access Journals (Sweden)

    Adelene Buckland

    2008-04-01

    Full Text Available This essay explores the nineteenth-century traffic and exchange of fossils and natural-historical objects between province and metropolis as represented by two very different geological writers of the period, the fossil collector Gideon Mantell and the novelist Thomas Hardy. The men are connected through Mantell's 'The Wonders of Geology', the sixth edition of which (1848 Hardy read and utilised for his descriptions of the geological past in his third novel, 'A Pair of Blue Eyes' (1873. These two texts demonstrate a powerful investment in determining the meaning of the geological object according to the social and geographical spaces in which it is discovered, displayed, and discussed, so that the scientific object becomes the site around which complex cultural politics coalesce and sit in tension. In its consideration of the relationship between place and meaning in science, and in its focus on scientific material culture, this essay attempts to disrupt the current spotlight on the interrelationships between scientific law and narrative pattern in Victorian literary studies. Instead, it hopes to contribute to a discussion of the ways in which the novel's attention to scientific objects rather than narratives made it an important site of epistemological enquiry into the basis of scientific knowledge and the inseparability of that knowledge from the discourses and spaces which produced it.

  1. THEOLOGY AS CREATIVE LANGUAGE. THE CASE OF THOMAS BROOKS

    Directory of Open Access Journals (Sweden)

    Ciprian SIMUȚ

    2015-12-01

    Full Text Available The problem of theological language has been a hindrance in coming closer to God, ever since complex patterns of thought have combined with the theological inquiry. The conclusion that helped Protestantism gain ground was bringing the theological message of the Bible to the understanding of every-day believer. An effort was made to explain how God works in history, and how to become more like Christ in one’s every-day life. However, mere copying was not the foundation of Christianity. Inner conviction born out of understanding the explanation from the Biblical message was crucial. Thomas Brooks was one of the protestant theologians who aimed to explain how the Devil and evil work against the believer, in order to create chaos, disorder, sorrow, hatred, deception, and ignorance. He did this by transforming the theological message into creative language, using every-day images in order to create a relation between theology and praxis. This paper will analyze some of the aspects found in Brooks’ theological presentation, in order to show how theology could be used for the benefit of the individual believer, as well as for the benefit of society.

  2. "The Leviathan" as automaton: method and politics in Thomas Hobbes

    Directory of Open Access Journals (Sweden)

    Diego Fernández Peychaux

    2014-02-01

    Full Text Available This article points out the tension between the normative purpose of Thomas Hobbes’s political texts, and the identification of the resolutive-compositive method of science as it is applied in those texts. In order to solve this difficulty one should appeal to Hobbes’s epistemological texts to read the example of the clock from a new perspective. Thus, if the Hobbesian method responds to the need for normative innovation, it not only denies an apologetic intentionality for a completely ignored historical reality, but also makes it possible to describe the relationship between the individual and the State in a manner different from traditional understandings. According to these conclusions, man ceases to be simply a mechanical part but rather becomes a cause, and therefore, a measure of the effectiveness and functionality of a State. Man’s savage individualism while in the state of nature is not the model, but the cause that justifies a Leviathan capable of turning the homo homini lupus into homo homini deus.

  3. A modified Thomas-Fermi treatment of nuclei

    International Nuclear Information System (INIS)

    Swiatecki, W.J.

    1992-01-01

    An improved nuclear Thomas-Fermi theory is studied in which, rather than adding density-gradient corrections to the standard expression for the kinetic energy density (proportional to ρ 5/3 , where ρ is the density) one simply modifies this ρ 5/3 function to reflect the fact that the kinetic energy density becomes negative for small values of ρ when, in a typical nuclear problem, one is dealing with the outer fringes of the surface region. The net result of this study is simply stated: In order to find the density associated with a given nuclear potential, one exponentiates this potential instead of raising its depth with respect to the chemical potential to the three-halves power, as in the standard treatment. An improved description of the nuclear surface profile is obtained, including the quantal halo in the classically forbidden region. But since density derivatives are not involved, there is no need to solve a partial differential equation in order to find the density. (orig.)

  4. American Connections: The Early Works of Thomas Bang

    Directory of Open Access Journals (Sweden)

    Ring Petersen, Anne

    2015-09-01

    Full Text Available The Danish artist Thomas Bang spent his early years in the USA. The works he created in this formative period were thus profoundly shaped by the contemporary movements in American art of the 1960s and 1970s when sculpture, or to be more precise, three-dimensional work became a hotbed of expansive experiments. This article traces how Bang made a radical move from painting to sculpture, which was characteristic of that time, and how he developed his artistic idiom by taking an active part in some of the seminal new departures in American art, in particular process art and post-minimalism. By leaping forward to Bang's later works produced after his return to Denmark, the article also demonstrates how the sculptural syntax and working principles developed in the early works still underlie and structure the artist's more allegorical sculptures and installations from the 2000s, thus testifying to the lasting impact of Bang's American period, which remains the key to understanding his works.

  5. An improved Thomas--Fermi treatment of nuclei

    International Nuclear Information System (INIS)

    Swiatecki, W.J.

    1992-01-01

    I want to tell you about an improved Thomas-Fermi method for calculating shell-averaged nuclear properties, such as density distributions, binding energies, etc. A shell-averaged statistical theory is useful as the macroscopic component of microscopic-macroscopic theories of nuclei, such as the Strutinsky method, as well as in theories of nuclear matter in the bulk, relevant in astrophysical applications. In nuclear physics, as well as in atomic and molecular problems, the following question often has to be answered: you are given a potential well, say a deformed Woods-Saxon potential, into which you put N quantized fermions into the lowest N eigenstates, up to a ''Fermi energy'' To. You square the wave functions of the particles and add them up to get the total density ρ( r → ) = Σ i N |ψ i | 2 . Is there some simple way of estimating ρ( r → ) without going through the misery of numerically solving N partial differential Schroedinger equations for the N particles?

  6. Nietzche's echo--a dialogue with Thomas Altizer.

    Science.gov (United States)

    Moss, David M

    2010-03-01

    Prophets provoke psychological unrest, especially when exposing accepted beliefs as profound deceptions. The biblical prophets exemplify such confrontation as do certain atheists ardently opposed to the images of God created by those seers. The German philosopher Friedrich Nietzsche dramatically illustrates this type of counterforce to the Judeo-Christian tradition. His prophet Zarathustra is intended to be a model for the modern mind, one free of superstitions inflicted by antiquated religious dogma. Nietzsche's credo "God is dead" served as a declaration for the nineteenth century. In the twentieth century, it became a theological diagnosis. As a "movement," or "tenor," the death of God or radical theology was spearheaded by Thomas Altizer, a well-published young professor center-staged during the turbulent 1960s. His work foreshadows a new strain of atheism currently represented by biologist Richard Dawkins (2006, The God delusion. New York: Houghton Mifflin), philosopher Daniel Dennett (2006, Breaking the spell. New York: Penquin), neuroscientist Sam Harris (2004, The end of faith. New York: W.W. Norton; 2008, Letter to a Christian nation. New York: Vintage), journalist Christopher Hitchens (2007, God is not great. New York: Twelve), and mathematician John Allen Paulos (Paulos 2008, Irreligion. New York: Hill & Wang). This twenty-first century crusade against belief in God is best understood as a psychodynamic ignited by Altizer's Christian atheism. The present dialogue reflects that dynamic while the prologue and epilogue reveal evidence of Providence amidst claims of God's demise in contemporary history.

  7. Thomas Alva Edison (170th Anniversary of His Birth

    Directory of Open Access Journals (Sweden)

    V. P. Samokhin

    2017-01-01

    Full Text Available A brief overview of the major technical achievements of Thomas Edison, an outstanding American inventor, author of more than 1,000 US patents and several thousand patents in other countries, honorary academician of the USSR. Presents biographical information and details of the formation of Edison, his work as a telegrapher, organizing the world's first industrial research laboratory for the continuous development of technological innovations, as well as some interesting facts about his life and work. This includes pioneering work on the creation of Edison incandescent lighting, the distribution system for their power and cinema. Edison can be considered the founder of the multimedia technology, as it was the beginning of the invention of the phonograph of phonics and disc phonograph recording of depth was the basis of mechanical recording. Name Edison are geographic features, a lot of companies and educational institutions. He was a member of many Academies of Sciences and entered the list of "100 most outstanding people for 1,000 years." Bust open in the Hall of Fame of great Americans, and a bronze statue - sculptures at the National Hall on Capitol Hill.

  8. Comparison of occipitocervical and atlantoaxial fusion in treatment of unstable Jefferson fractures

    Directory of Open Access Journals (Sweden)

    Yong Hu

    2017-01-01

    Full Text Available Background: Controversy exists regarding the management of unstable Jefferson fractures, with some surgeons performing reduction and immobilization of the patient in a halo vest and others performing open reduction and internal fixation. This study compares the clinical and radiological outcome parameters between posterior atlantoaxial fusion (AAF and occipitocervical fusion (OCF constructs in the treatment of the unstable atlas fracture. Materials and Methods: 68 consecutive patients with unstable Jefferson fractures treated by AAF or OCF between October 2004 and March 2011 were included in this retrospective evaluation from institutional databases. The authors reviewed medical records and original images. The patients were divided into two surgical groups treated with either AAF ( n = 48, F/M 30:18 and OCF ( n = 20, F/M 13:7 fusion. Blood loss, operative time, Japanese Orthopaedic Association (JOA score, visual analog scale (VAS score, atlanto-dens interval, lateral mass displacement, complications, and the bone fusion rates were recorded. Results: Five patients with incomplete paralysis (7.4% demonstrated postoperative improvement by more than 1 grade on the American Spinal Injury Association impairment scale. The JOA score of the AAF group improved from 12.5 ± 3.6 preoperatively to 15.7 ± 2.3 postoperatively, while the JOA score of the OCF group improved from 11.2 ± 3.3 preoperatively to 14.8 ± 4.2 postoperatively. The VAS score of AAF group decreased from 4.8 ± 1.5 preoperatively to 1.0 ± 0.4 postoperatively, the VAS score of the OCF group decreased from 5.4 ± 2.2 preoperatively to 1.3 ± 0.9 postoperatively. Conclusions: The OCF or AAF combined with short-term external immobilization can establish the upper cervical stability and prevent further spinal cord injury and nerve function damage.

  9. 33 CFR 165.904 - Lake Michigan at Chicago Harbor & Burnham Park Harbor-Safety and Security Zone.

    Science.gov (United States)

    2010-07-01

    ... & Burnham Park Harbor-Safety and Security Zone. 165.904 Section 165.904 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY REGULATED NAVIGATION... Guard District § 165.904 Lake Michigan at Chicago Harbor & Burnham Park Harbor—Safety and Security Zone...

  10. 77 FR 59551 - Safety Zone, Changes to Original Rule; Boston Harbor's Rock Removal Project, Boston Inner Harbor...

    Science.gov (United States)

    2012-09-28

    ... DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 165 [Docket No. USCG-2012-0767] RIN 1625-AA00 Safety Zone, Changes to Original Rule; Boston Harbor's Rock Removal Project, Boston Inner Harbor... original provisions of that temporary final rule, but adds two additional safety zones necessary for the...

  11. Backscatter 0.5m TIFF Mosaic of St. Thomas, US Virgin Islands, 2004

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This image represents a 0.5 meter resolution backscatter mosaic of the south shore of St. Thomas, US Virgin Islands. NOAA's NOS/NCCOS/CCMA Biogeography Team and...

  12. some aspects of fisheries ecology in thomas dam, kano nigeria 192

    African Journals Online (AJOL)

    userpc

    The diversity, length-weight relationship and condition factor of fish species of Thomas Dam,. Dambatta Kano ..... of these species in northern Nigeria as reported ... obtained in other fresh water bodies within the .... North America, 1: 584-590.

  13. Numerical comparison of atomic binding energies calculated by Thomas-Fermi like formulas

    International Nuclear Information System (INIS)

    Donnamaria, M.C.; Castro, E.A.; Fernandez, F.M.

    1985-01-01

    We apply in an exhaustive way formulas of Thomas-Fermi nature to determine atomic ground state energies. Results are compared with Hartree-Fock SCF data and the different methods are analysed in a comparative fashion. (authors)

  14. The Weyl non-Abelian gauge field and the Thomas precession

    International Nuclear Information System (INIS)

    Barbashov, B.M.; Pestov, A.B.

    1998-01-01

    The connection between the Fermi-Walker transport and the Weyl non-Abelian gauge field is established. A theoretical possibility of detecting the Weyl gauge field caused by the Thomas precession of a gyroscope is discussed

  15. EAARL-B Submerged Topography - Saint Croix and Saint Thomas, U.S. Virgin Islands, 2014

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Binary point-cloud data for part of the submerged environs of Saint Croix and Saint Thomas, U.S. Virgin Islands, were produced from remotely sensed, geographically...

  16. C-CAP USVI, St. Thomas 2007-2012 Land Cover Change Analysis

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains the 2007 and 2012 classifications of St. Thomas and can be used to analyze change. This data set utilized CIR imagery captured from Microsoft...

  17. WATER TEMPERATURE and Other Data from THOMAS G. THOMPSON from 19920323 to 19921020 (NODC Accession 9700194)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Oxygen production, abundance of marine snow, and other data were collected from bottle and video camera casts in the Pacific Ocean from the THOMAS G. THOMPSON from...

  18. NOAA TIFF Graphic- 0.5m Backscatter Mosaic of St. Thomas, US Virgin Islands, 2004

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This image represents a 0.5 meter resolution backscatter mosaic of the south shore of St. Thomas, US Virgin Islands.NOAA's NOS/NCCOS/CCMA Biogeography Team and...

  19. Thomas Carlyle and the Characteristics of Nineteenth-Century English Literature

    DEFF Research Database (Denmark)

    Schatz-Jakobsen, Claus

    2001-01-01

    Artiklen diskuterer den skotske forfatter Thomas Carlyles plads i den engelske litteraturs historie og argumenterer for at hans skrift, "Characteristics" (1831), selv dramatiserer og dekonstruerer litteraturhistoriske grænsedragninger....

  20. Bathymetry 1m GRID of St. Thomas, US Virgin Islands, 2004, UTM 20 WGS84

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains an ESRI Grid with 1 meter cell size representing the bathymetry of the south shore of St. Thomas, US Virgin Islands. NOAA's NOS/NCCOS/CCMA...

  1. Tartu ehk unbewusste Ängste / Rauno Thomas Moss ; interv. Harry Liivrand

    Index Scriptorium Estoniae

    Moss, Rauno Thomas, 1977-

    2008-01-01

    Rauno Thomas Mossi (1977) näitus "Silent Tartu aka Clinical" Vaal galeriis. Kunstniku eluloolisi andmeid, loomingust, alasti mehekeha kujutamisest. Töötab Tartu Ülikoolis joonistamise ja plastilise anatoomia õppejõuna. Tema lemmikkunstnikud

  2. A Dialectics of Reason and Instinct: Thomas Mann’s Magic Mountain

    Directory of Open Access Journals (Sweden)

    Ciro Schmidt Andrade

    Full Text Available The whole Thomas Mann’s work is a reflection of the permanent tension between instinct and reason, the irruption of the repressed and life order. This is particularly manifested in his work The Magic Mountain.

  3. National Status and Trends: Bioeffects Program - St. Thomas East End Reserves (STEER) Database

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The purpose of this effort was to characterize the extent and magnitude of chemical contamination in the St. Thomas East End Reserves or STEER, as part of a larger...

  4. Astronaut Thomas Stafford during water egress training in Gulf of Mexico

    Science.gov (United States)

    1965-01-01

    Astronaut Thomas P. Stafford, Gemini 6 prime crew pilot, climbs out of a boilerplate model of a Gemini spacecraft during water egress training in the Gulf of Mexico. A NASA swimmer in the water nearby assists in the exercise.

  5. Thomas M. Prymak. Gathering a Heritage: Ukrainian, Slavonic, and Ethnic Canada and the USA

    Directory of Open Access Journals (Sweden)

    Danielle Morrissette

    2017-03-01

    Full Text Available Book review of Thomas M. Prymak. Gathering a Heritage: Ukrainian, Slavonic, and Ethnic Canada and the USA. U of Toronto P, 2015. xiv, 370 pp. Illustrations. Tables. Appendix. Notes. Index. $29.95, paper.

  6. Wave Climate and Wave Response, 2025 Plan, Kahului Harbor, Maui, Hawaii

    National Research Council Canada - National Science Library

    Thompson, Edward

    2002-01-01

    ... (wind waves and swell) and long waves (harbor oscillations), was used to evaluate the technical feasibility of three alternative modifications to the harbor, including the Kahului Commercial Harbor 2025 Master Plan...

  7. Questions and Answers for Ken Thomas' "Intra-Extra Vehicular Activity Russian and Gemini Spacesuits" Presentation

    Science.gov (United States)

    Thomas, Kenneth S.

    2016-01-01

    Kenneth Thomas will discuss the Intra-Extra Vehicular Activity Russian & Gemini spacesuits. While the United States and Russia adapted to existing launch- and reentry-type suits to allow the first human ventures into the vacuum of space, there were differences in execution and capabilities. Mr. Thomas will discuss the advantages and disadvantages of this approach compared to exclusively intravehicular or extra-vehicular suit systems.

  8. Multibeam collection for TN281: Multibeam data collected aboard Thomas G. Thompson from 2012-05-24 to 2012-05-26, Seattle, WA to Esquimalt Harbor, Canada

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  9. Multibeam collection for RNDB05WT: Multibeam data collected aboard Thomas Washington from 1988-07-27 to 1988-08-03, Newport, OR to Dutch Harbor, AK

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  10. Multibeam collection for TN323: Multibeam data collected aboard Thomas G. Thompson from 2015-05-29 to 2015-06-14, Seattle, WA to Dutch Harbor, AK

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  11. Multibeam collection for TN282: Multibeam data collected aboard Thomas G. Thompson from 2012-05-26 to 2012-06-27, Esquimalt Harbor, Canada to Seattle, WA

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  12. Cohomological gauge theory, quiver matrix models and Donaldson-Thomas theoryCohomological gauge theory, quiver matrix models and Donaldson-Thomas theory

    NARCIS (Netherlands)

    Cirafici, M.; Sinkovics, A.; Szabo, R.J.

    2009-01-01

    We study the relation between Donaldson–Thomas theory of Calabi–Yau threefolds and a six-dimensional topological Yang–Mills theory. Our main example is the topological U(N) gauge theory on flat space in its Coulomb branch. To evaluate its partition function we use equivariant localization techniques

  13. Bar Harbor, ME Tsunami Forecast Grids for MOST Model

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Bar Harbor, Maine Forecast Model Grids provides bathymetric data strictly for tsunami inundation modeling with the Method of Splitting Tsunami (MOST) model. MOST...

  14. Hydrocarbon pollutants shape bacterial community assembly of harbor sediments

    KAUST Repository

    Barbato, Marta; Mapelli, Francesca; Magagnini, Mirko; Chouaia, Bessem; Armeni, Monica; Marasco, Ramona; Crotti, Elena; Daffonchio, Daniele; Borin, Sara

    2016-01-01

    Petroleum pollution results in co-contamination by different classes of molecules, entailing the occurrence of marine sediments difficult to remediate, as in the case of the Ancona harbor (Mediterranean Sea, Italy). Autochthonous bioaugmentation

  15. Extrachromosomal deoxyribonucleic acid in R factor-harboring Enterobacteriaceae

    DEFF Research Database (Denmark)

    Møller, JK; Bak, AL; Christiansen, C

    1976-01-01

    Extrachromosomal deoxyribonucleic acid (DNA) from 24 different R factor-harboring Enterobacteriaceae was isolated and characterized by analytical ultracentrifugation and electron microscopy. The R factors represented 15 different patterns of transferable drug resistance found in enterobacteria from...

  16. 75 FR 76613 - National Pearl Harbor Remembrance Day, 2010

    Science.gov (United States)

    2010-12-09

    .... The deadly attack on Pearl Harbor did not accomplish its mission of breaking the American spirit..., aiding the war effort by working in manufacturing plants, participating in rationing programs, or...

  17. Apra Harbor, Guam Tsunami Forecast Grids for MOST Model

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Apra Harbor, Guam Forecast Model Grids provides bathymetric data strictly for tsunami inundation modeling with the Method of Splitting Tsunami (MOST) model. MOST...

  18. Pearl Harbor, Hawaii 1 arc-second DEM

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The 1/3-second Pearl Harbor Hawaii Elevation Grid provides bathymetric data in ASCII raster format of 1/3-second resolution in geographic coordinates. This grid is...

  19. Submarine Biofouling Control- Chlorination DATS Study at Pearl Harbor

    National Research Council Canada - National Science Library

    Wegand, John

    2001-01-01

    The intent of this document is to sumarize the chlorination studies performed at Naval Station, Pearl Harbor in support of biofouling control initiatives for the submarine community, as requested by NAVSEA 92T...

  20. Ground-water status report, Pearl Harbor area, Hawaii, 1978

    Science.gov (United States)

    Soroos, Ronald L.; Ewart, Charles J.

    1979-01-01

    Increasing demand for freshwater in Hawaii has placed heavy stress on many of the State 's basal aquifer systems. The most heavily stressed of these systems is the Pearl Harbor on Oahu. The Pearl Harbor basal aquifer supplies as much as 277 million gallons per day. Since early in this century, spring discharge has been declining while pumpage has been increasing. Total ground-water discharge has remained steady despite short-term fluctuations. Some wells show general increases in chloride concentration while others remain steady. Chloride concentrations throughout the area show no apparent increase since 1970. Basal water head maps of the Pearl Harbor area clearly reflect the natural discharge points, which are the springs located along the shore near the center of Pearl Harbor. Basal-water hydrographs show a general decline of about 0.09 foot per year. This implies depletion of storage at a rate of about 25 million gallons per day. (USGS).

  1. Pearl Harbor, Hawaii Tsunami Forecast Grids for MOST Model

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Pearl Harbor, Hawaii Forecast Model Grids provides bathymetric data strictly for tsunami inundation modeling with the Method of Splitting Tsunami (MOST) model....

  2. Multibeam collection for TN255: Multibeam data collected aboard Thomas G. Thompson from 2010-10-16 to 2010-10-20, Dutch Harbor, AK to Dutch Harbor, AK

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  3. Multibeam collection for TN250: Multibeam data collected aboard Thomas G. Thompson from 2010-06-16 to 2010-07-14, Dutch Harbor, AK to Dutch Harbor, AK

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  4. Multibeam collection for TN249: Multibeam data collected aboard Thomas G. Thompson from 2010-05-10 to 2010-06-14, Dutch Harbor, AK to Dutch Harbor, AK

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  5. Multibeam collection for RNDB06WT: Multibeam data collected aboard Thomas Washington from 1988-08-05 to 1988-09-05, Dutch Harbor, AK to Dutch Harbor, AK

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  6. Multibeam collection for TN324: Multibeam data collected aboard Thomas G. Thompson from 2015-06-18 to 2015-06-21, Dutch Harbor, AK to Dutch Harbor, AK

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set is part of a larger set of data called the Multibeam Bathymetry Database (MBBDB) where other similar data can be found at...

  7. Harbor seal vibrissa morphology suppresses vortex-induced vibrations

    OpenAIRE

    Hanke, Wolf; Witte, Mathias; Miersch, Lars; Brede, Martin; Oeffner, Johannes; Michael, Mark; Hanke, Frederike; Leder, Alfred; Dehnhardt, Guido

    2010-01-01

    Harbor seals (Phoca vitulina) often live in dark and turbid waters, where their mystacial vibrissae, or whiskers, play an important role in orientation. Besides detecting and discriminating objects by direct touch, harbor seals use their whiskers to analyze water movements, for example those generated by prey fish or by conspecifics. Even the weak water movements left behind by objects that have passed by earlier can be sensed and followed accurately (hydrodynamic trail following). While scan...

  8. [Thomas' shunt for hemodialysis: dysfunction and its percutaneous treatment].

    Science.gov (United States)

    Gallego, J J; Santos, E; Méndez, J V; Coronel, F; Torrente, J; Holguín, A; Moreno, R

    2003-01-01

    To assess the usefulness of percutaneous treatment of abnormalities of the venous tree in extending the survival of external Thomas shunts (TS). Twelve cases of TS were included in a hemodialysis access fistula dysfunction monitoring program and were followed for up to 48 months. The abnormalities found were treated by percutaneous transluminal angioplasty (PTA) or thrombolysis and PTA. Survival curves and the Kaplan-Meier method were used to calculate the likelihood of primary patency (P1), secondary patency (P2), and overall patency (OP). A total of 61 interventions were performed during the period of follow-up. On 12 occasions the fistula was thrombosed; in the rest, increased venous pressure to 150 mmHg or higher was detected during dialysis. Fistulography was performed after washing the thrombosed fistulas with urokinase, and revealed one or more of the following angiographic signs: 1) a short reduction of more than 50% in lumen caliber in the femoral vein adjacent to the anastomosis, present in 52% of the cases (fig. 1); 2) imaging a "jet" of contrast material at the site of entry of the shunt into the femoral vein (fig. 2), present in 22% of the cases; and 3) a filling defect or "flap" at the same site, owing to hyperplastic tissue or piece of thrombus adhering to the intima, present in 34% of the cases (figs. 3-5). This last-mentioned finding ordinarily gave rise to a "valve" effect, whereby injection into the venous branch was feasible but aspiration from the venous branch was difficult or impossible. PTA was carried out and attained anatomical and functional success in 100% of cases. PI was 58%, 33%, 8%, and 0% at 6, 12, 24, and 36 months, respectively; P2 was 100%, 75%, 58%, and 25%; respectively, at those same times. The comparison of the PI and P2 curves was statistically significant; p < 0.001 (table 1). OP was 83%, 66%, 50% and 41% at 12, 24, 36 and 48 months. The comparison of the PI surgical and OP curves was statistically significant; p < 0

  9. Satellite Monitoring of Boston Harbor Water Quality: Initial Investigations

    Science.gov (United States)

    Sheldon, P.; Chen, R. F.; Schaaf, C.; Pahlevan, N.; Lee, Z.

    2016-02-01

    The transformation of Boston Harbor from the "dirtiest in America" to a National Park Area is one of the most remarkable estuarine recoveries in the world. A long-term water quality dataset from 1991 to present exists in Boston Harbor due to a $3. 8 billion lawsuit requiring the harbor clean-up. This project uses discrete water sampling and underway transects with a towed vehicle coordinated with Landsat 7 and Landsat 8 to create surface maps of chlorophyll a (Chl a), dissolved organic matter (CDOM and DOC), total suspended solids (TSS), diffuse attenuation coefficient (Kd_490), and photic depth in Boston Harbor. In addition, 3 buoys have been designed, constructed, and deployed in Boston Harbor that measure Chl a and CDOM fluorescence, optical backscatter, salinity, temperature, and meteorological parameters. We are initially using summer and fall of 2015 to develop atmospheric corrections for conditions in Boston Harbor and develop algorithms for Landsat 8 data to estimate in water photic depth, TSS, Chl a, Kd_490, and CDOM. We will report on initial buoy and cruise data and show 2015 Landsat-derived distributions of water quality parameters. It is our hope that once algorithms for present Landsat imagery can be developed, historical maps of water quality can be constructed using in water data back to 1991.

  10. Cyclic platform dolomites and platform-to-basin transition of Jefferson Formation (Frasnian), southwest Montana and east-central Idaho

    Energy Technology Data Exchange (ETDEWEB)

    Dorobek, S.L.

    1987-08-01

    The Jefferson Formation (Frasnian) in southwestern Montana consists of cyclic sequences of shallow marine platformal dolomites that grade westward into slope/basinal facies in east-central Idaho. Regional sedimentologic characteristics of slope facies in Idaho indicate that the Jefferson platform resembled a distally steepened ramp. Slope facies consist of slope laminites with local small scale slumps and slope breccias. Shallow water platform-derived clasts are lacking in the slope breccias. Individual shallowing upward platform cycles are 25 m to < 1 m thick and consists of, in descending order: local solution-collapse breccia caps; cryptalgal dolomudstone; rare ooid dolograinstone; thin-bedded Amphipora dolowackestone; coarsely crystalline dolostones with abundant lenticular to domal stromatoporoids; and basal thin-bedded, fine-grained, shale dolostones with closely spaced hard-grounds that grade upward into burrow-homogenized, irregularly bedded dolostones.

  11. DarkLight: A Search for Dark Forces at the Jefferson Laboratory Free-Electron Laser Facility

    Energy Technology Data Exchange (ETDEWEB)

    Balewski, Jan; Bernauer, J; Bertozzi, William; Bessuille, Jason; Buck, B; Cowan, Ray; Dow, K; Epstein, C; Fisher, Peter; Gilad, Shalev; Ihloff, Ernest; Kahn, Yonatan; Kelleher, Aidan; Kelsey, J; Milner, Richard; Moran, C; Ou, Longwu; Russell, R; Schmookler, Barak; Thaler, J; Tschalar, C; Vidal, Christopher; Winnebeck, A; Benson, Stephen [JLAB; Gould, Christopher [JLAB; Biallas, George [JLAB; Boyce, James [JLAB; Coleman, James [JLAB; Douglas, David [JLAB; Ent, Rolf [JLAB; Evtushenko, Pavel [JLAB; Fenker, Howard [JLAB; Gubeli, Joseph [JLAB; Hannon, Fay [JLAB; Huang, Jia [JLAB; Jordan, Kevin [JLAB; Legg, Robert [JLAB; Marchlik, Matthew [JLAB; Moore, Steven [JLAB; Neil, George [JLAB; Shinn, Michelle D [JLAB; Tennant, Christopher [JLAB; Walker, Richard [JLAB; Williams, Gwyn [JLAB; Zhang, Shukui [JLAB; Freytsis, M; Fiorito, Ralph; O' Shea, P; Alarcon, Ricardo; Dipert, R; Ovanesyan, G; Gunter, Thoth; Kalantarians, Narbe; Kohl, M; Albayrak, Ibrahim; Horn, Tanja; Gunarathne, D S; Martoff, C J; Olvitt, D L; Surrow, Bernd; Lia, X; Beck, Reinhard; Schmitz, R; Walther, D; Brinkmann, K; Zaunig, H

    2014-05-01

    We give a short overview of the DarkLight detector concept which is designed to search for a heavy photon A' with a mass in the range 10 MeV/c^2 < m(A') < 90 MeV/c^2 and which decays to lepton pairs. We describe the intended operating environment, the Jefferson Laboratory free electon laser, and a way to extend DarkLight's reach using A' --> invisible decays.

  12. Performance of a DC GaAs photocathode gun for the Jefferson lab FEL

    CERN Document Server

    Siggins, T; Bohn, C L; Bullard, D; Douglas, D; Grippo, A; Gubeli, J; Krafft, G A; Yunn, B

    2001-01-01

    The performance of the 320 kV DC photocathode gun has met the design specifications for the 1 kW IR Demo FEL at Jefferson Lab. This gun has shown the ability to deliver high average current beam with outstanding lifetimes. The GaAs photocathode has delivered 135 pC per bunch, at a bunch repetition rate of 37.425 MHz, corresponding to 5 mA average CW current. In a recent cathode lifetime measurement, 20 h of CW beam was delivered with an average current of 3.1 mA and 211 C of total charge from a 0.283 cm sup 2 illuminated spot. The cathode showed a 1/e lifetime of 58 h and a 1/e extracted charge lifetime of 618 C. We have achieved quantum efficiencies of 5% from a GaAs wafer that has been in service for 13 months delivering in excess 2400 C with only three activation cycles.

  13. A theoretical model of subsidence caused by petroleum production: Big Hill Field, Jefferson County, Texas

    International Nuclear Information System (INIS)

    Hill, D.W.; Sharp, J.M. Jr.

    1993-01-01

    In the Texas Gulf Coastal Plain, there is a history of oil and gas production extending over 2 to 5 decades. Concurrent with this production history, there has been unprecedented population growth accompanied by vastly increased groundwater demands. Land subsidence on both local and regional bases in this geologic province has been measured and predicted in several studies. The vast majority of these studies have addressed the problem from the standpoint of groundwater usage while only a few have considered the effects of oil and gas production. Based upon field-based computational techniques (Helm, 1984), a model has been developed to predict land subsidence caused by oil and gas production. This method is applied to the Big Hill Field in Jefferson County, Texas. Inputs include production data from a series of wells in this field and lithologic data from electric logs of these same wells. Outputs include predicted amounts of subsidence, the time frame of subsidence, and sensitivity analyses of compressibility and hydraulic conductivity estimates. Depending upon estimated compressibility, subsidence, to date, is predicted to be as high as 20 cm. Similarly, depending upon estimated vertical hydraulic conductivity, the time frame may be decades for this subsidence. These same methods can be applied to other oil/gas fields with established production histories as well as new fields when production scenarios are assumed. Where subsidence has been carefully measured above petroleum reservoir, the model may be used inversely to calculate sediment compressibilities

  14. Photon and π"0 electroproduction at Jefferson Laboratory-Hall A

    International Nuclear Information System (INIS)

    Defurne, Maxime

    2015-01-01

    Defined in the mid 90's, the generalized parton distributions (GPDs) represent a higher level of information than the form factors and parton distribution functions: indeed they encapsulate the correlation between the fraction of longitudinal momentum and the transverse position of the partons inside the nucleon. Consequently we can access the distribution of the partons in the transverse plane according to their longitudinal momentum. Moreover we can derive the total angular orbital momentum of quarks thanks to Ji's sum rule. Experimentally, we access the GPDs through the study of deep exclusive processes (asymmetries, cross sections,...). A worldwide experimental program started in the early 2000's. This thesis presents two data analyses carried on two data sets from experiments running at Jefferson laboratory - Hall A in 2004 and 2010. From the 2004 data set, we have extracted unpolarized and polarized photon electroproduction cross sections. A careful study of the systematic errors has greatly improved the quality of the results. They seem to indicate the necessity to take into account target-mass and finite-t corrections up to twist-4. From the 2010 data set, we have performed the first separation of the longitudinal and transverse responses of neutral pion electroproduction. The results confirm the assumption of a significant contribution of the transverse response although kinematically suppressed with respect to the longitudinal response. These results of high precision validate the GPD approach and will allow to improve the existing models. (author) [fr

  15. Beam position reconstruction for the g2p experiment in Hall A at Jefferson lab

    International Nuclear Information System (INIS)

    Zhu, Pengjia; Allada, Kalyan; Allison, Trent; Badman, Toby; Camsonne, Alexandre; Chen, Jian-ping; Cummings, Melissa; Gu, Chao; Huang, Min; Liu, Jie; Musson, John; Slifer, Karl; Sulkosky, Vincent; Ye, Yunxiu; Zhang, Jixie; Zielinski, Ryan

    2016-01-01

    Beam-line equipment was upgraded for experiment E08-027 (g2p) in Hall A at Jefferson Lab. Two beam position monitors (BPMs) were necessary to measure the beam position and angle at the target. A new BPM receiver was designed and built to handle the low beam currents (50–100 nA) used for this experiment. Two new super-harps were installed for calibrating the BPMs. In addition to the existing fast raster system, a slow raster system was installed. Before and during the experiment, these new devices were tested and debugged, and their performance was also evaluated. In order to achieve the required accuracy (1–2 mm in position and 1–2 mrad in angle at the target location), the data of the BPMs and harps were carefully analyzed, as well as reconstructing the beam position and angle event by event at the target location. The calculated beam position will be used in the data analysis to accurately determine the kinematics for each event.

  16. Performance Testing of Jefferson Lab 12 GeV Helium Screw Compressors

    Science.gov (United States)

    Knudsen, P.; Ganni, V.; Dixon, K.; Norton, R.; Creel, J.

    2015-08-01

    Oil injected screw compressors have essentially superseded all other types of compressors in modern helium refrigeration systems due to their large displacement capacity, reliability, minimal vibration, and capability of handling helium's high heat of compression. At the present state of compressor system designs for helium refrigeration systems, typically two-thirds of the lost input power is due to the compression system. It is important to understand the isothermal and volumetric efficiencies of these machines to help properly design the compression system to match the refrigeration process. It is also important to identify those primary compressor skid exergetic loss mechanisms which may be reduced, thereby offering the possibility of significantly reducing the input power to helium refrigeration processes which are extremely energy intensive. This paper summarizes the results collected during the commissioning of the new compressor system for Jefferson Lab's (JLab's) 12 GeV upgrade. The compressor skid packages were designed by JLab and built to print by industry. They incorporate a number of modifications not typical of helium screw compressor packages and most importantly allow a very wide range of operation so that JLab's patented Floating Pressure Process can be fully utilized. This paper also summarizes key features of the skid design that allow this process and facilitate the maintenance and reliability of these helium compressor systems.

  17. Dark Matter Search in a Beam-Dump eXperiment (BDX) at Jefferson Lab

    International Nuclear Information System (INIS)

    Battaglieri, M.

    2016-01-01

    MeV-GeV dark matter (DM) is theoretically well motivated but remarkably unexplored. This proposal presents the MeV-GeV DM discovery potential for a ∼ 1 m$^3$ segmented CsI(Tl) scintillator detector placed downstream of the Hall A beam-dump at Jefferson Lab, receiving up to 10 22 electrons-on-target (EOT) in 285 days. This experiment (Beam-Dump eXperiment or BDX) would be sensitive to elastic DM-electron and to inelastic DM scattering at the level of 10 counts per year, reaching the limit of the neutrino irreducible background. The distinct signature of a DM interaction will be an electromagnetic shower of few hundreds of MeV, together with a reduced activity in the surrounding active veto counters. A detailed description of the DM particle χ production in the dump and subsequent interaction in the detector has been performed by means of Monte Carlo simulations. Different approaches have been used to evaluate the expected backgrounds: the cosmogenic background has been extrapolated from the results obtained with a prototype detector running at INFN-LNS (Italy), while the beam-related background has been evaluated by GEANT4 Monte Carlo simulations. The proposed experiment will be sensitive to large regions of DM parameter space, exceeding the discovery potential of existing and planned experiments in the MeV-GeV DM mass range by up to two orders of magnitude.

  18. Polarization observables for strangeness photoproduction on a frozen spin target with CLAS at Jefferson Lab

    International Nuclear Information System (INIS)

    Fegan, Stuart

    2012-01-01

    The FROST experiment at Jefferson Lab used the CLAS detector in Hall B with the intention of performing a complete measurement of polarization observables associated with strangeness photoproduction, in combination with data from previous JLab experiments. This was achieved by utilizing the FROST polarized target in conjunction with polarized photon beams, allowing direct measurement of beam-target double polarization observables. By studying strangeness reactions, such as γp → K + Λ 0 , it may be possible to find 'missing' baryon resonances, predicted by symmetric quark models but not observed in previous experiments, whose results are consistent with the di-quark model. It is thought these 'missing' resonances remain undiscovered because they have different coupling strengths for different reaction channels, such as the strangeness reactions, whereas the current data is dominated by studies of pN reactions. Observing these resonances therefore has important implications for our knowledge of the excited states of nucleons, and the models predicting the quark interactions within them. The G polarization observable is one of the beam-target double polarization observables, associated with a longitudinally polarized target and a linearly polarized photon beam, and its measurement for the strangeness reaction γp → K + Λ 0 is the focus of the work presented.

  19. Development of Micromegas detectors for the CLAS12 experiment at Jefferson Laboratory

    CERN Document Server

    Charles, Gabriel

    This thesis presents my work performed since 2010 to develop Micromegas detectors for the CLAS12 spectrometer that will be installed in the Hall B of Jefferson Laboratory (USA). The Micromegas are robust, fast and cheap gaseous detectors. Nevertheless, they must be adapted to the specific CLAS12 environment as there are many challenges to face : presence of a strong magnetic field, off-detector frontend electronics, high hadrons rate, necessity to curve the detectors, few space available. My PhD started by beam tests at CERN that allowed to evaluate the spark rate in CLAS12 Micromegas at a few Hertz. An important part of this document is therefore devoted to the study of several innovative methods to minimize the dead time induced by sparks. Thus, I have performed intensive tests on the optimization of the micromesh high voltage filter, with on Micromegas equipped with a GEM foild or on resistive Micromegas. The latter giving excellent results, full scale prototypes, one of which built by a company, have been...

  20. Unveiling the nucleon tensor charge at Jefferson Lab: A study of the SoLID case

    Energy Technology Data Exchange (ETDEWEB)

    Ye, Zhihong; Sato, Nobuo; Allada, Kalyan; Liu, Tianbo; Chen, Jian-Ping; Gao, Haiyan; Kang, Zhong-Bo; Prokudin, Alexei; Sun, Peng; Yuan, Feng

    2017-04-01

    © 2017 The Authors Future experiments at the Jefferson Lab 12 GeV upgrade, in particular, the Solenoidal Large Intensity Device (SoLID), aim at a very precise data set in the region where the partonic structure of the nucleon is dominated by the valence quarks. One of the main goals is to constrain the quark transversity distributions. We apply recent theoretical advances of the global QCD extraction of the transversity distributions to study the impact of future experimental data from the SoLID experiments. Especially, we develop a simple strategy based on the Hessian matrix analysis that allows one to estimate the uncertainties of the transversity quark distributions and their tensor charges extracted from SoLID data simulation. We find that the SoLID measurements with the proton and the effective neutron targets can improve the precision of the u- and d-quark transversity distributions up to one order of magnitude in the range 0.05 < x < 0.6.

  1. Jefferson Teamwork Observation Guide (JTOG): An Instrument to Observe Teamwork Behaviors.

    Science.gov (United States)

    Lyons, Kevin J; Giordano, Carolyn; Speakman, Elizabeth; Smith, Kellie; Horowitz, June A

    2016-01-01

    Interprofessional education (IPE) is becoming an integral part of the education of health professions students. However, teaching students to become successful members of interprofessional teams is complex, and it is important for students to learn the combinations of skills necessary for teams to function effectively. There are many instruments available to measure many features related to IPE. However, these instruments are often too cumbersome to use in an observational situation since they tend to be lengthy and contain many abstract characteristics that are difficult to identify. The Jefferson Teamwork Observation Guide (JTOG) is a short tool that was created for students early in their educational program to observe teams in action with a set of guidelines to help them focus their observation on behaviors indicative of good teamwork. The JTOG was developed over a 2-year period based on student and clinician feedback and the input of experts in IPE. While initially developed as a purely educational tool for prelicensure students, it is becoming clear that it is an easy-to-use instrument that assesses the behavior of clinicians in practice.

  2. Modeling exposure to depleted uranium in support of decommissioning at Jefferson Proving Ground, Indiana

    Energy Technology Data Exchange (ETDEWEB)

    Ebinger, M.H. [Los Alamos National Lab., NM (United States); Oxenburg, T.P. [Army Test and Evaluation Command, Aberdeen Proving Ground, MD (United States)

    1997-02-01

    Jefferson Proving Ground was used by the US Army Test and Evaluation Command for testing of depleted uranium munitions and closed in 1995 under the Base Realignment and Closure Act. As part of the closure of JPG, assessments of potential adverse health effects to humans and the ecosystem were conducted. This paper integrates recent information obtained from site characterization surveys at JPG with environmental monitoring data collected from 1983 through 1994 during DU testing. Three exposure scenarios were evaluated for potential adverse effects to human health: an occasional use scenario and two farming scenarios. Human exposure was minimal from occasional use, but significant risk were predicted from the farming scenarios when contaminated groundwater was used by site occupants. The human health risk assessments do not consider the significant risk posed by accidents with unexploded ordnance. Exposures of white-tailed deer to DU were also estimated in this study, and exposure rates result in no significant increase in either toxicological or radiological risks. The results of this study indicate that remediation of the DU impact area would not substantially reduce already low risks to humans and the ecosystem, and that managed access to JPG is a reasonable model for future land use options.

  3. Beam position reconstruction for the g2p experiment in Hall A at Jefferson lab

    Energy Technology Data Exchange (ETDEWEB)

    Zhu, Pengjia, E-mail: pzhu@jlab.org [University of Science and Technology of China, Hefei, Anhui 230026 (China); Allada, Kalyan [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Massachusetts Institute of Technology, MA 02139 (United States); Allison, Trent [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Badman, Toby [University of New Hampshire, Durham, NH 03824 (United States); Camsonne, Alexandre; Chen, Jian-ping [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Cummings, Melissa [College of William & Mary, Williamsburg, VA 23187 (United States); Gu, Chao [University of Virginia, Charlottesville, VA 22904 (United States); Huang, Min [Duke University, Durham, NC 27708 (United States); Liu, Jie [University of Virginia, Charlottesville, VA 22904 (United States); Musson, John [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Slifer, Karl [University of New Hampshire, Durham, NH 03824 (United States); Sulkosky, Vincent [University of Virginia, Charlottesville, VA 22904 (United States); Massachusetts Institute of Technology, MA 02139 (United States); Ye, Yunxiu [University of Science and Technology of China, Hefei, Anhui 230026 (China); Zhang, Jixie [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); University of Virginia, Charlottesville, VA 22904 (United States); Zielinski, Ryan [University of New Hampshire, Durham, NH 03824 (United States)

    2016-02-01

    Beam-line equipment was upgraded for experiment E08-027 (g2p) in Hall A at Jefferson Lab. Two beam position monitors (BPMs) were necessary to measure the beam position and angle at the target. A new BPM receiver was designed and built to handle the low beam currents (50–100 nA) used for this experiment. Two new super-harps were installed for calibrating the BPMs. In addition to the existing fast raster system, a slow raster system was installed. Before and during the experiment, these new devices were tested and debugged, and their performance was also evaluated. In order to achieve the required accuracy (1–2 mm in position and 1–2 mrad in angle at the target location), the data of the BPMs and harps were carefully analyzed, as well as reconstructing the beam position and angle event by event at the target location. The calculated beam position will be used in the data analysis to accurately determine the kinematics for each event.

  4. The cryogenic target for the G0 experiment at Jefferson lab

    International Nuclear Information System (INIS)

    Covrig, S.D.; Beise, E.J.; Carr, R.; Gustafsson, K.K.; Hannelius, L.; Herda, M.-C.; Jones, C.E.; Liu, J.; McKeown, R.D.; Neveling, R.; Rauf, A.W.; Smith, G.

    2005-01-01

    A cryogenic horizontal single loop target has been designed, built, tested and operated for the G 0 experiment in Hall C at Jefferson Lab. The target cell is 20cm long, the loop volume is 6.5l and the target operates with the cryogenic pump fully immersed in the fluid. The target has been designed to operate at 30Hz rotational pump speed with either liquid hydrogen or liquid deuterium. The high-power heat exchanger is able to remove 1000W of heat from the liquid hydrogen, while the nominal electron beam with current of 40μA and energy of 3GeV deposits about 320W of heat into the liquid. The increase in the systematic uncertainty due to the liquid hydrogen target is negligible on the scale of a parity violation experiment. The global normalized yield reduction for 40μA beam is about 1.5% and the target density fluctuations contribute less than 238ppm (parts per million) to the total asymmetry width, typically about 1200ppm, in a Q 2 bin

  5. An optimized prototype of electromagnetic calorimeter for the SoLID project at Jefferson Lab

    Science.gov (United States)

    Shen, C.; Wang, Y.; Xiao, D.; Han, D.; Zou, Z.; Li, Y.; Zheng, X.; Chen, J.

    2018-02-01

    A shashlik-type electromagnetic calorimeter will be produced in Hall A of Jefferson Laboratory for the Solenoidal Large Intensity Device (SoLID). Wavelength-shifting (WLS) fibers and clear fibers will be used as the light guide part of the calorimeter. The blue light from scintillators is converted into green light by WLS fibers and is carried out to the back of the calorimeters for readout. Since the magnetic field of SoLID reaches about 1.5 T behind the calorimeters, the design is to use clear fibers to further guide the light out of the solenoid for readout by PMTs. Therefore, it is important to study the perfomance of WLS and clear fibers. This paper describes a comparative test of two different WLS fibers and a light attenuation test for a clear fiber. The results show that the performance of the two WLS fibers is the same under large curvature bending, and that the bending has no effect on the light transmission through the clear fiber. In addition, a comparison test for two fiber end-face reflective materials is also reported. It reveals that the use of silver ink as a reflective material can increase the light yield by 30%. Thereby, an optimized prototype based on the above experimental results was built and the basic performance was tested.

  6. Dark Matter Search in a Beam-Dump eXperiment (BDX) at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Battaglieri, M. [Univ. of Genova (Italy). National Institute for Nuclear Physics. et al

    2016-07-05

    MeV-GeV dark matter (DM) is theoretically well motivated but remarkably unexplored. This proposal presents the MeV-GeV DM discovery potential for a $\\sim$1 m$^3$ segmented CsI(Tl) scintillator detector placed downstream of the Hall A beam-dump at Jefferson Lab, receiving up to 10$^{22}$ electrons-on-target (EOT) in 285 days. This experiment (Beam-Dump eXperiment or BDX) would be sensitive to elastic DM-electron and to inelastic DM scattering at the level of 10 counts per year, reaching the limit of the neutrino irreducible background. The distinct signature of a DM interaction will be an electromagnetic shower of few hundreds of MeV, together with a reduced activity in the surrounding active veto counters. A detailed description of the DM particle $\\chi$ production in the dump and subsequent interaction in the detector has been performed by means of Monte Carlo simulations. Different approaches have been used to evaluate the expected backgrounds: the cosmogenic background has been extrapolated from the results obtained with a prototype detector running at INFN-LNS (Italy), while the beam-related background has been evaluated by GEANT4 Monte Carlo simulations. The proposed experiment will be sensitive to large regions of DM parameter space, exceeding the discovery potential of existing and planned experiments in the MeV-GeV DM mass range by up to two orders of magnitude.

  7. Determination of the Optimal Operating Parameters for the Jefferson Lab's Cryogenic Cold Compressor System

    International Nuclear Information System (INIS)

    Joe Wilson; Venkatarao Ganni; Dana Arenius; Jonathan Creel

    2004-01-01

    Jefferson Lab's (JLab) Continuous Electron Beam Accelerator Facility (CEBAF) and Free Electron Laser (FEL) are supported by 2 K helium refrigerator known as the Central Helium Liquefier (CHL), which maintains a constant low vapor pressure over the accelerators' large liquid helium inventory with a five-stage centrifugal compressor train. The cold compressor train operates with constrained discharge pressure and can be varied over a range of suction pressures and mass flows to meet the operational requirements of the two accelerators. Using data from commissioning and routine operations of the cold compressor system, the presented procedure predicts an operating point for each cold compressor such that maximum efficiency is attained for the overall cold compressor system for a given combination of mass flow and vapor pressure. The procedure predicts expected efficiency of the system and relative compressors speeds for operating vapor pressures from 4 to 2.5 kPa (corresponds to overall pressure ratios of 29 to 56) and flow rates of 135 g/s to 250 g/s. The results of the predictions are verified by test for a few operating conditions of mass flows and vapor pressures

  8. Experimental setup for deeply virtual Compton scattering (DVCS) experiment in hall A at Jefferson Laboratory

    International Nuclear Information System (INIS)

    Camsonne, A.

    2005-11-01

    The Hall A Deeply Virtual Compton Scattering (DVCS) experiment used the 5.757 GeV polarized electron beam available at Jefferson Laboratory and ran from september until december 2004. Using the standard Hall A left high resolution spectrometer three kinematical points were taken at a fixed x b (jorken) = 0.32 value for three Q 2 values: 1.5 GeV 2 , 1.91 GeV 2 , 2.32 GeV 2 . An electromagnetic Lead Fluoride calorimeter and a proton detector scintillator array designed to work at a luminosity of 10 37 cm -2 s -1 were added to ensure the exclusivity of the DVCS reaction. In addition to the new detectors new custom electronics was used: a calorimeter trigger module which determines if an electron photon coincidence has occurred and a sampling system allowing to deal with pile-up events during the offline analysis. Finally the data from the kinematic at Q 2 = 2.32 GeV 2 and s = 5.6 GeV 2 allowed to get a preliminary result for the exclusive π 0 electroproduction on the proton. (author)

  9. Beam position reconstruction for the g2p experiment in Hall A at Jefferson lab

    Science.gov (United States)

    Zhu, Pengjia; Allada, Kalyan; Allison, Trent; Badman, Toby; Camsonne, Alexandre; Chen, Jian-ping; Cummings, Melissa; Gu, Chao; Huang, Min; Liu, Jie; Musson, John; Slifer, Karl; Sulkosky, Vincent; Ye, Yunxiu; Zhang, Jixie; Zielinski, Ryan

    2016-02-01

    Beam-line equipment was upgraded for experiment E08-027 (g2p) in Hall A at Jefferson Lab. Two beam position monitors (BPMs) were necessary to measure the beam position and angle at the target. A new BPM receiver was designed and built to handle the low beam currents (50-100 nA) used for this experiment. Two new super-harps were installed for calibrating the BPMs. In addition to the existing fast raster system, a slow raster system was installed. Before and during the experiment, these new devices were tested and debugged, and their performance was also evaluated. In order to achieve the required accuracy (1-2 mm in position and 1-2 mrad in angle at the target location), the data of the BPMs and harps were carefully analyzed, as well as reconstructing the beam position and angle event by event at the target location. The calculated beam position will be used in the data analysis to accurately determine the kinematics for each event.

  10. Llewellyn Hilleth Thomas: An appraisal of an under-appreciated polymath

    Science.gov (United States)

    Jackson, John David

    2010-02-01

    Llewellyn Hilleth Thomas was born in 1903 and died in 1992 at the age of 88. His name is known by most for only two things, Thomas precession and the Thomas-Fermi atom. The many other facets of his career - astrophysics, atomic and molecular physics, nonlinear problems, accelerator physics, magnetohydrodynamics, computer design principles and software and hardware - are largely unknown or forgotten. I review his whole career - his early schooling, his time at Cambridge, then Copenhagen in 1925-26, and back to Cambridge, his move to the US as an assistant professor at Ohio State University in 1929, his wartime years at the Ballistic Research Laboratory, Aberdeen Proving Grounds, then in 1946 his new career as a unique resource at IBM's Watson Scientific Computing Laboratory and Columbia University until his first retirement in 1968, and his twilight years at North Carolina State University. Although the Thomas precession and the Thomas-Fermi atom may be the jewels in his crown, his many other accomplishments add to our appreciation of this consummate applied mathematician and physicist. )

  11. del Nido versus St. Thomas Cardioplegia Solutions: A Single-Center Retrospective Analysis of Post Cross-Clamp Defibrillation Rates.

    Science.gov (United States)

    Buel, Shane T; Striker, Carrie Whittaker; O'Brien, James E

    2016-06-01

    There are many cardioplegia solutions currently in use for pediatric cardiopulmonary bypass (CPB). The most common being del Nido solution. Another common cardioplegia solution used for pediatric CPB is St. Thomas. In October 2014, Children's Mercy Kansas City changed from the use of modified St. Thomas to del Nido. This study compared rates of post cross-clamp fibrillation requiring defibrillation between del Nido solution and modified St. Thomas solution stratified by weight at Children's Mercy Kansas City. This retrospective study consisted of 394 patients who underwent cardiac surgery requiring cardioplegia between January 1, 2014 and July 31, 2015. The outcome measured was defibrillation upon cross-clamp removal. Statistical significance was determined using Fishers exact test with a two-sided significance level of .05. Incidence of defibrillation post cross-clamp removal was 4.4% in the del Nido group and 26.8% in the St. Thomas group (p Thomas group (p Thomas group (p Thomas group (p 60-kg category had an incidence of defibrillation of 16.7% in the del Nido group and 63% in the St. Thomas group (p Thomas and del Nido cardioplegia solutions. Analyses of weight stratifications demonstrate a decrease in the rate of defibrillation post cross-clamp removal in all categories within the del Nido group.

  12. Tech Talk for Social Studies Teachers Lest We Forget: Remembering Pearl Harbor.

    Science.gov (United States)

    Green, Tim

    2001-01-01

    Presents an annotated bibliography that provides Web sites about Pearl Harbor (Hawaii). Includes Web sites that cover Pearl Harbor history, a live view of Pearl Harbor, stories from people who remember where they were during the attack, information on the naval station at Pearl Harbor, and a virtual tour of the USS Arizona. (CMK)

  13. Computer Simulation of Embryonic Systems: What can a virtual embryo teach us about developmental toxicity? Microcephaly: Computational and organotypic modeling of a complex human birth defect (seminar and lecture - Thomas Jefferson University, Philadelphia, PA)

    Science.gov (United States)

    (1) Standard practice for assessing developmental toxicity is the observation of apical endpoints (intrauterine death, fetal growth retardation, structural malformations) in pregnant rats/rabbits following exposure during organogenesis. EPA’s computational toxicology research pro...

  14. Underway meteorological, navigational, physical and time series data collected aboard NOAA Ship Thomas Jefferson in the North Atlantic Ocean from 2014-04-04 to 2014-11-18 (NODC Accession 0122407)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0122407 contains raw underway meteorological, navigational, physical and time series data logged by the Scientific Computer System (SCS) aboard NOAA...

  15. Underway meteorological, navigational, physical and time series data collected aboard NOAA Ship Thomas Jefferson in the North Atlantic Ocean from 2013-09-24 to 2013-11-04 (NODC Accession 0123614)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0123614 contains raw underway meteorological, navigational, physical and time series data logged by the Scientific Computer System (SCS) aboard NOAA...

  16. Underway meteorological, navigational, physical and time series data collected aboard NOAA Ship Thomas Jefferson in the North Atlantic Ocean from 2017-07-11 to 2017-07-22 (NCEI Accession 0164798)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0164798 contains raw underway meteorological, navigational, physical and time series data logged by the Scientific Computer System (SCS) aboard NOAA...

  17. Underway meteorological, navigational, physical and time series data collected aboard NOAA Ship Thomas Jefferson in the North Atlantic Ocean from 2017-07-22 to 2017-07-26 (NCEI Accession 0164960)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0164960 contains raw underway meteorological, navigational, physical and time series data logged by the Scientific Computer System (SCS) aboard NOAA...

  18. An Examination of an Information Security Framework Implementation Based on Agile Values to Achieve Health Insurance Portability and Accountability Act Security Rule Compliance in an Academic Medical Center: The Thomas Jefferson University Case Study

    Science.gov (United States)

    Reis, David W.

    2012-01-01

    Agile project management is most often examined in relation to software development, while information security frameworks are often examined with respect to certain risk management capabilities rather than in terms of successful implementation approaches. This dissertation extended the study of both Agile project management and information…

  19. Underway meteorological, navigational, physical and time series data collected aboard NOAA Ship Thomas Jefferson in the North Atlantic Ocean from 2013-03-11 to 2013-03-13 (NODC Accession 0123054)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0123054 contains raw underway meteorological, navigational, physical and time series data logged by the Scientific Computer System (SCS) aboard NOAA...

  20. Underway meteorological, navigational, physical and time series data collected aboard NOAA Ship Thomas Jefferson in the North Atlantic Ocean from 2015-06-24 to 2015-07-03 (NCEI Accession 0142627)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0142627 contains raw underway meteorological, navigational, physical and time series data logged by the Scientific Computer System (SCS) aboard NOAA...

  1. Obituary: Thomas C. Van Flandern (1940-2009)

    Science.gov (United States)

    Dunham, David; Slabinski, Victor

    2011-12-01

    Dr. Thomas Charles Van Flandern, an expert in celestial mechanics and cosmology, died January 9, 2009 in Seattle, Washington, of colon cancer. He was 68. Van Flandern was an astronomer at the U.S. Naval Observatory from 1963 to 1983. He developed software to predict and analyze lunar occultations to improve lunar orbital and fundamental star catalog data. In later years he championed increasingly controversial theories. But his 1978 prediction that some asteroids have natural satellites, which was almost universally rejected, was verified when the Galileo spacecraft photographed Dactyl, a satellite of (243) Ida, during its flyby in 1993. Besides astronomy and computers, he had strong interests in biochemistry and nutrition, and he ran a business selling personal computers in the 1980s. Tom Van Flandern was born June 26, 1940 in Cleveland, Ohio, the first child of Robert F. Van Flandern and Anna Mary Haley. His father, a police officer, left the family when Tom Van Flandern was 5. His mother died when he was 16; he and his siblings then lived with their grandmother, Margery Jobe, until he went to college. Tom Van Flandern became interested in astronomy as a child. He used his first telescope, purchased with newspaper delivery earnings, to observe lunar occultations, and then learned how to predict them, sparking a life-long passion for dynamical astronomy. While attending St. Ignatius High School, Van Flandern and fellow student Thomas Petrie organized the Cleveland Moonwatch team to observe the first artificial satellites, the only team without an adult organizer. In 1958, Tom Van Flandern entered Xavier University where he led the Cincinnati Moonwatch team. He learned computer programming at a summer job with General Electric and wrote software to calculate "look angles" from orbital elements. The Cincinnati team became a top producer of observations using these predictions. Tom obtained a B.S. in mathematics from Xavier in 1962. He spent the next year at

  2. A relativistic extended Fermi-Thomas-like equation for a self-gravitating system of fermions

    International Nuclear Information System (INIS)

    Merloni, A.; Ruffini, R.; Torroni, V.

    1998-01-01

    The authors extend previous results of a Fermi-Thomas model, describing self-gravitating fermions in their ground state, to a relativistic gravitational theory in Minkowski space. In such a theory the source term of the gravitational potential depends both on the pressure and the density of the fluid. It is shown that, in correspondence of this relativistic treatment, still a Fermi-Thomas-like equation can be derived for the self-gravitating system, though the non-linearities are much more complex. No Fermi-Thomas-like equation can be obtained in the General Relativistic treatment. The canonical results for neutron stars and white dwarfs are recovered and also some erroneous statements in the scientific literature are corrected

  3. The Ecclesiological Contributions of Thomas Helwys’s Reformation in a Baptist Context

    Directory of Open Access Journals (Sweden)

    Jones Marvin

    2017-12-01

    Full Text Available The English Separatist movement provided the background for which John Smyth and Thomas Helwys emerged to reconstitute a biblical ecclesiology. Through the study of the New Testament, they came to the position that infant baptism and covenantal theology could not be the foundation for the New Testament church. Both men embraced believer’s baptism as the basic foundation in which a recovered church should be built. Unfortunately, Smyth defected to the Mennonites, leaving Thomas Helwys to continue the fledging work known as Baptists. This article will examine the life of Thomas Helwys and his contribution to Baptist ecclesiology; it will also review selected literary works that contributed to the recovery of a New Testament church and the founding of Baptist ecclesiology.

  4. Jude the Obscure de Thomas Hardy et l’autorité de la lettre Jude the Obscure by Thomas Hardy and the Power of the Letter

    Directory of Open Access Journals (Sweden)

    Stéphanie Bernard

    2009-10-01

    Full Text Available Thomas Hardy is usually considered a Victorian writer. Nonetheless, his last novel Jude the Obscure, announced the era of modernity which started with the twentieth century, just before he abandoned fiction to concentrate on poetry. With modernity looming in the background, Jude the Obscure allowed for the rewriting of tragedy. Urban settings have replaced the countryside and all signs of transcendence have vanished from society. This defeat of the divine is nevertheless accompanied by a great number of biblical references. Thomas Hardy quotes and uses the Divine Letter as if to rewrite it rather than to appear faithful to the Word. The text keeps offering itself to the spell of voice: it does so when Job utters words of revolt and then worship, when Jude lets his imagination flow from his lips so that he seems to live on in the text after he is dead, or when the voice of the novelist becomes the voice of a poet.

  5. Thomas Graham: I. Contributions to thermodynamics, chemistry, and the occlusion of gases

    OpenAIRE

    Wisniak, Jaime

    2013-01-01

    Thomas Graham (1805-1869) is known as the founder of colloidal chemistry and for his fundamental research on the nature of phosphoric acid and phosphates, diffusion of gases, liquids, and solutions, adsorption of gases by metals, dialysis, osmosis, mass transfer through membranes, and the constitution of matter. A Thomas Graham (1805-1869) se le conoce como el fundador de la química coloidal y por sus investigaciones fundamentales en las áreas de la naturaleza del ácido fosfórico y los fos...

  6. Biological aspects and life table of Uroleucon ambrosiae (Thomas, 1878) as a function of temperature

    OpenAIRE

    Auad Alexander Machado; Moraes Jair Campos de

    2003-01-01

    The aphid Uroleucon ambrosiae (Thomas) is considered a pest of hidroponically-grown lettuce, but basic and applied information on its control are scarce in Brazil. The aim of this study was to determine the effect of different temperatures on biological aspects and life history of U. ambrosiae (Thomas) developing on hydroponic lettuce (Lactuca sativa L.) crop. Newly emerged nymphs were placed on 4-cm discs of hydroponic lettuce, var. Verônica, which were maintained on 5-cm Petri dishes, at te...

  7. Derivation of the Euler equations in Thomas-Fermi theories of a hot nuclear system

    International Nuclear Information System (INIS)

    Wang, C.

    1992-01-01

    The variational extreme condition with respect to statistical distribution of nucleons in momentum space is applied to derive the Euler equation of the nuclear density profile. The resultant Euler equation of the nuclear density profile is proven to be identical with that obtained in the usual Thomas-Fermi theories of a hot nuclear system where the variation is made with respect to the nuclear density profile. A Fermi-Dirac-type distribution appears as a result of variation in the present approach, while it is used as a given expression in obtaining the variation of the nuclear density profile in the usual Thomas-Fermi theories

  8. Semiclassical approach to Regge poles trajectories calculations for nonsingular potentials: Thomas-Fermi type

    International Nuclear Information System (INIS)

    Belov, S M; Avdonina, N B; Felfli, Z; Marletta, M; Msezane, A Z; Naboko, S N

    2004-01-01

    A simple semiclassical approach, based on the investigation of anti-Stokes line topology, is presented for calculating Regge poles for nonsingular (Thomas-Fermi type) potentials, namely potentials with singularities at the origin weaker than order -2. The anti-Stokes lines for Thomas-Fermi potentials have a more complicated structure than those of singular potentials and require careful application of complex analysis. The explicit solution of the Bohr-Sommerfeld quantization condition is used to obtain approximate Regge poles. We introduce and employ three hypotheses to obtain several terms of the Regge pole approximation

  9. 33 CFR 207.610 - St. Lawrence River, Cape Vincent Harbor, N.Y.; use, administration, and navigation of the harbor...

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false St. Lawrence River, Cape Vincent Harbor, N.Y.; use, administration, and navigation of the harbor and U.S. breakwater. 207.610 Section 207... NAVIGATION REGULATIONS § 207.610 St. Lawrence River, Cape Vincent Harbor, N.Y.; use, administration, and...

  10. Development of Micromegas detectors for the CLAS12 experiment at Jefferson Laboratory

    International Nuclear Information System (INIS)

    Charles, Gabriel

    2013-01-01

    This thesis presents my work performed since 2010 to develop Micromegas detectors for the CLAS12 spectrometer that will be installed in the Hall B of Jefferson Laboratory (USA). The Micromegas are robust, fast and cheap gaseous detectors. Nevertheless, they must be adapted to the specific CLAS12 environment as there are many challenges to face: presence of a strong magnetic field, off-detector front end electronics, high hadrons rate, necessity to curve the detectors, few space available. My PhD started by beam tests at CERN that allowed to evaluate the spark rate in CLAS12 Micromegas at a few Hertz. An important part of this document is therefore devoted to the study of several innovative methods to minimize the dead time induced by sparks. Thus, I have performed intensive tests on the optimization of the micro-mesh high voltage filter, with on Micromegas equipped with a GEM foil or on resistive Micromegas. The latter giving excellent results, full scale prototypes, one of which built by a company, have been tested. The mechanics and the working point (gas, voltages, geometry...) of the detectors have then be validated by laboratory tests. However, to ensure a better signal over noise ratio, the micro-mesh has been optimized. The CEA Saclay being also responsible for the development of the electronics for CLAS12 Micromegas, I have compared its performance with another electronics, verify its time resolution and determine the signal over noise ratio when 2 m long cables are connecting the electronics to the detector. The progress realized in the context of CLAS12 have furthermore triggered other projects. So, I have carried out simulations based on pseudo-data to validate the feasibility of a meson spectroscopy experiment for which we have proposed a Micromegas based tracker. (author) [fr

  11. Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Dudek, Jozef; Essig, Rouven; Kumar, Krishna; Meyer, Curtis; McKeown, Robert; Meziani, Zein Eddine; Miller, Gerald A; Pennington, Michael; Richards, David; Weinstein, Larry

    2012-08-01

    We are at the dawn of a new era in the study of hadronic nuclear physics. The non-Abelian nature of Quantum Chromodynamics (QCD) and the resulting strong coupling at low energies represent a significant challenge to nuclear and particle physicists. The last decade has seen the development of new theoretical and experimental tools to quantitatively study the nature of confinement and the structure of hadrons comprised of light quarks and gluons. Together these will allow both the spectrum and the structure of hadrons to be elucidated in unprecedented detail. Exotic mesons that result from excitation of the gluon field will be explored. Multidimensional images of hadrons with great promise to reveal the dynamics of the key underlying degrees of freedom will be produced. In particular, these multidimensional distributions open a new window on the elusive spin content of the nucleon through observables that are directly related to the orbital angular momenta of quarks and gluons. Moreover, computational techniques in Lattice QCD now promise to provide insightful and quantitative predictions that can be meaningfully confronted with, and elucidated by, forthcoming experimental data. In addition, the development of extremely high intensity, highly polarized and extraordinarily stable beams of electrons provides innovative opportunities for probing (and extending) the Standard Model, both through parity violation studies and searches for new particles. Thus the 12 GeV upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab will enable a new experimental program with substantial discovery potential to address these and other important topics in nuclear, hadronic and electroweak physics.

  12. The lead-glass electromagnetic calorimeters for the magnetic spectrometers in Hall C at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Mkrtchyan, H. [A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan 0036 (Armenia); Carlini, R. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Tadevosyan, V., E-mail: tadevosn@jlab.org [A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan 0036 (Armenia); Arrington, J. [Physics Division, Argonne National Laboratory, Argonne, IL 60439 (United States); Asaturyan, A. [A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan 0036 (Armenia); Christy, M.E. [Hampton University, Hampton, VA 23668 (United States); Dutta, D. [Triangle Universities Nuclear Laboratory and Duke University, Durham, NC 27708 (United States); Ent, R.; Fenker, H.C.; Gaskell, D. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Horn, T. [Catholic University of America, Washington, DC 20064 (United States); Jones, M.K. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Keppel, C.E. [Hampton University, Hampton, VA 23668 (United States); Mack, D.J. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Malace, S.P. [Triangle Universities Nuclear Laboratory and Duke University, Durham, NC 27708 (United States); Mkrtchyan, A. [A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute), Yerevan 0036 (Armenia); Niculescu, M.I. [James Madison University, Harrisonburg, VA 22807 (United States); Seely, J. [Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, MA (United States); Tvaskis, V. [Hampton University, Hampton, VA 23668 (United States); Wood, S.A. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); and others

    2013-08-11

    The electromagnetic calorimeters of the various magnetic spectrometers in Hall C at Jefferson Lab are presented. For the existing High Momentum Spectrometer (HMS) and Short Orbit Spectrometer (SOS), design considerations, relevant construction information, and comparisons of simulated and experimental results are included. The energy resolution of the HMS and SOS calorimeters is better than σ/E∼6%/√(E) and pion/electron (π/e) separation of about 100:1 has been achieved in the energy range of 1–5 GeV. Good agreement has been observed between the experimental and simulated energy resolutions, but simulations systematically exceed experimentally determined π{sup −} suppression factors by close to a factor of two. For the Super High Momentum Spectrometer (SHMS), presently under construction, details on the design and accompanying GEANT4 simulation efforts are given. The anticipated performance of the new calorimeter is predicted over the full momentum range of the SHMS. Good electron/hadron separation is anticipated by combining the energy deposited in an initial (preshower) calorimeter layer with the total energy deposited in the calorimeter. -- Highlights: • Construction and performance of lead glass calorimeters in JLab/Hall C are presented. • ∼5%/√(E) resolution, ∼100:1π/e separation is achieved in HMS calorimeter in GeV range. • Simulated resolution of the HMS calorimeter is in good agreement with experiment. • Simulated pion suppression of the HMS calorimeter exceeds experiment, by less than 2. • Pion suppression of ∼400:1 is predicted in projected SHMS calorimeter by simulations.

  13. Study of Double Spin Asymmetries in Inclusive ep Scattering at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Kang, Hoyoung [Seoul National Univ. (Korea, Republic of)

    2014-08-01

    The spin structure of the proton has been investigated in the high Bjorken x and low momentum transfer Q2 region. We used Jefferson Lab's polarized electron beam, a polarized target, and a spectrometer to get both the parallel and perpendicular spin asymmetries Apar and Aperp. These asymmetries produced the physics asymmetries A_1 and A_2 and spin structure functions g_1 and g_2. We found Q2 dependences of the asymmetries at resonance region and higher-twist effects. Our result increases the available data on the proton spin structure, especially at resonance region with low Q2. Moreover, A_2 and g_2 data show clear Q2 evolution, comparing with RSS and SANE-BETA. Negative resonance in A_2 data needs to be examined by theory. It can be an indication of very negative transverse-longitudinal interference contribution at W ~ 1.3 GeV. Higher twist effect appears at the low Q2 of 1.9 GeV2, although it is less significant than lower Q2 data of RSS. Twist03 matrix element d_2 was calculated using our asymmetry fits evaluation at Q2 – 1.9 GeV2. D-bar_2 = -0.0087±0.0014 was obtained by integrating 0.47 ≤ x ≤ 0.87.

  14. The MØLLER experiment at Jefferson Lab: search for physics beyond the Standard Model

    Science.gov (United States)

    van Oers, Willem T. H.

    2010-07-01

    The MO/LLER experiment at Jefferson Lab will measure the parity-violating analyzing power Az in the scattering of 11 GeV longitudinally polarized electrons from the atomic electrons in a liquid hydrogen target (Mo/ller scattering). In the Standard Model a non-zero Az is due to the interference of the electromagnetic amplitude and the weak neutral current amplitude, the latter mediated by the Z0 boson. Az is predicted to be 35.6 parts per billion (ppb) at the kinematics of the experiment. It is the objective of the experiment to measure Az to a precision of 0.73 ppb. This result would yield a measurement of the weak charge of the electron QWe to a fractional error of 2.3% at an average value Q2 of 0.0056 (GeV/c)2. This in turn will yield a determination of the weak mixing angle sin2θw with an uncertainty of ±0.00026(stat) ±0.00013(syst), comparable to the accuracy of the two best determinations at high energy colliders (at the Z0 pole). Consequently, the result could potentially influence the central value of this fundamental electroweak parameter, which is of critical importance in deciphering any signal of new physics that might be observed at the Large Hadron Collider (LHC). The measurement is sensitive to the interference of the electromagnetic amplitude with new neutral current amplitudes as weak as 10-3 GF from as yet unknown high energy dynamics, a level of sensitivity unlikely to be matched in any experiment measuring a flavor and CP conserving process in the next decade. This provides indirect access to new physics at multi-TeV scales in a manner complementary to direct searches at the LHC.

  15. Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab

    International Nuclear Information System (INIS)

    Dudek, Jozef; Ent, Rolf; Essig, Rouven; Kumar, Krishna; Meyer, Curtis; McKeown, Robert; Meziani, Zein Eddine; Miller, Gerald A.; Pennington, Michael; Richards, David; Weinstein, Larry; Young, Glenn

    2012-01-01

    We are at the dawn of a new era in the study of hadronic nuclear physics. The non-Abelian nature of Quantum Chromodynamics (QCD) and the resulting strong coupling at low energies represent a significant challenge to nuclear and particle physicists. The last decade has seen the development of new theoretical and experimental tools to quantitatively study the nature of confinement and the structure of hadrons comprised of light quarks and gluons. Together these will allow both the spectrum and the structure of hadrons to be elucidated in unprecedented detail. Exotic mesons that result from excitation of the gluon field will be explored. Multidimensional images of hadrons with great promise to reveal the dynamics of the key underlying degrees of freedom will be produced. In particular, these multidimensional distributions open a new window on the elusive spin content of the nucleon through observables that are directly related to the orbital angular momenta of quarks and gluons. Moreover, computational techniques in Lattice QCD now promise to provide insightful and quantitative predictions that can be meaningfully confronted with, and elucidated by, forthcoming experimental data. In addition, the development of extremely high intensity, highly polarized and extraordinarily stable beams of electrons provides innovative opportunities for probing (and extending) the Standard Model, both through parity violation studies and searches for new particles. Thus the 12 GeV upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab will enable a new experimental program with substantial discovery potential to address these and other important topics in nuclear, hadronic and electroweak physics.

  16. Semantic eScience for Ecosystem Understanding and Monitoring: The Jefferson Project Case Study

    Science.gov (United States)

    McGuinness, D. L.; Pinheiro da Silva, P.; Patton, E. W.; Chastain, K.

    2014-12-01

    Monitoring and understanding ecosystems such as lakes and their watersheds is becoming increasingly important. Accelerated eutrophication threatens our drinking water sources. Many believe that the use of nutrients (e.g., road salts, fertilizers, etc.) near these sources may have negative impacts on animal and plant populations and water quality although it is unclear how to best balance broad community needs. The Jefferson Project is a joint effort between RPI, IBM and the Fund for Lake George aimed at creating an instrumented water ecosystem along with an appropriate cyberinfrastructure that can serve as a global model for ecosystem monitoring, exploration, understanding, and prediction. One goal is to help communities understand the potential impacts of actions such as road salting strategies so that they can make appropriate informed recommendations that serve broad community needs. Our semantic eScience team is creating a semantic infrastructure to support data integration and analysis to help trained scientists as well as the general public to better understand the lake today, and explore potential future scenarios. We are leveraging our RPI Tetherless World Semantic Web methodology that provides an agile process for describing use cases, identification of appropriate background ontologies and technologies, implementation, and evaluation. IBM is providing a state-of-the-art sensor network infrastructure along with a collection of tools to share, maintain, analyze and visualize the network data. In the context of this sensor infrastructure, we will discuss our semantic approach's contributions in three knowledge representation and reasoning areas: (a) human interventions on the deployment and maintenance of local sensor networks including the scientific knowledge to decide how and where sensors are deployed; (b) integration, interpretation and management of data coming from external sources used to complement the project's models; and (c) knowledge about

  17. Beam Diagnostics of the Compton Scattering Chamber in Jefferson Lab's Hall C

    Science.gov (United States)

    Faulkner, Adam; I&C Group Collaboration

    2013-10-01

    Upcoming experimental runs in Hall C will utilize Compton scattering, involving the construction and installation of a rectangular beam enclosure. Conventional cylindrical stripline-style Beam Position Monitors (BPMs) are not appropriate due to their form factor; therefore to facilitate measurement of position, button-style BPMs are being considered due to the ease of placement within the new beam enclosure. Button BPM experience is limited at JLAB, so preliminary measurements are needed to characterize the field response, and guide the development of appropriate algorithms for the Analog to Digital receiver systems. -field mapping is performed using a Goubau Line (G-Line), which employs a surface wave to mimic the electron beam, helping to avoid problems associated with vacuum systems. Potential algorithms include simplistic 1/r modeling (-field mapping), look-up-tables, as well as a potential third order power series fit. In addition, the use of neural networks specifically the multi-layer Perceptron will be examined. The models, sensor field maps, and utility of the neural network will be presented. Next steps include: modification of the control algorithm, as well as to run an in-situ test of the four Button electrodes inside of a mock beam enclosure. The analysis of the field response using Matlab suggests the button BPMs are accurate to within 10 mm, and may be successful for beam diagnostics in Hall C. More testing is necessary to ascertain the limitations of the new electrodes. The National Science Foundation, Old Dominion University, The Department of Energy, and Jefferson Lab.

  18. Littoral cells and harbor dredging along the California coast

    Science.gov (United States)

    Griggs, Gary B.

    1987-02-01

    Beach compartments or littoral cells form the framework for our understanding of the sources, transport, and sinks of sand in the nearshore zone. In general, along the California coast, beach sand is derived from rivers or clifferosion, moves alongshore under the influence of the prevailing waver conditions, and ultimately is lost either to a submarine canyon or a dune field. Marinas or harbors built either between or at the upcoast ends of beach compartments have been relatively maintenance-free, because of a lack of significant littoral drift at these locations. On the other hand, those harbors built in the middle reaches or at the downcoast ends of littoral cells have had expensive annual dredging problems, because of the interruption of large volumes of littoral drift. Although engineers have labored for years on various breakwater, jetty, or entrance channel configurations, the actual design utilized is of secondary importance. The critical factors are harbor location within a littoral cell and annual litoral drift volume.

  19. Respiratory properties of blood in the harbor porpoise, Phocoena phocoena

    DEFF Research Database (Denmark)

    Soegaard, Lisette B; Hansen, Marie N; van Elk, Cornelis

    2012-01-01

    Harbor porpoises are active divers that exchange O(2) and CO(2) with the environment during a fast single breath upon surfacing. We investigated blood O(2)-transporting properties, buffer characteristics, Cl(-) transport via the erythrocyte anion exchanger (AE1), circulating nitric oxide metaboli......Harbor porpoises are active divers that exchange O(2) and CO(2) with the environment during a fast single breath upon surfacing. We investigated blood O(2)-transporting properties, buffer characteristics, Cl(-) transport via the erythrocyte anion exchanger (AE1), circulating nitric oxide....... The true plasma non-bicarbonate buffer value was moderately higher than in terrestrial mammals and increased upon deoxygenation. Plasma bicarbonate was also relatively high, contributing to increase the overall buffer capacity. The apparent Cl(-) permeability of harbor porpoise erythrocytes was similar......, plasma nitrate and hemoglobin-mediated nitrite reduction were elevated compared with mammalian standards, suggesting that increased nitric oxide bioavailability and nitrite-derived nitric oxide could play important roles in diving physiology....

  20. 33 CFR 110.87 - Henderson Harbor, N.Y.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Henderson Harbor, N.Y. 110.87... ANCHORAGE REGULATIONS Special Anchorage Areas § 110.87 Henderson Harbor, N.Y. (a) Area A. The area in the... latitude 43°51′08.8″ N, longitude 76°12′08.9″ W, thence to latitude 43°51′09.0″ N, longitude 76°12′19.0″ W...

  1. Extrachromosomal deoxyribonucleic acid in R factor-harboring Enterobacteriaceae

    DEFF Research Database (Denmark)

    Møller, JK; Bak, AL; Christiansen, C

    1976-01-01

    Extrachromosomal deoxyribonucleic acid (DNA) from 24 different R factor-harboring Enterobacteriaceae was isolated and characterized by analytical ultracentrifugation and electron microscopy. The R factors represented 15 different patterns of transferable drug resistance found in enterobacteria from...... from 1.700 to 1.720 g/cm3. The majority of the bacteria contained extrachromosomal DNAs of various densities. Three-fourths of the R factors were classified as fi+. The investigation illustrates the extensive variability in the physical characteristics of plasmid DNA from R factor-harboring strains....

  2. 75 FR 58426 - Notice of Intent to Repatriate Cultural Items: Thomas Gilcrease Institute of American History and...

    Science.gov (United States)

    2010-09-24

    ...: Thomas Gilcrease Institute of American History and Art, Tulsa, OK AGENCY: National Park Service, Interior... Thomas Gilcrease Institute of American History and Art (Gilcrease Museum), Tulsa, OK, that meet the... the Gilcrease Museum for the preservation of North American history. The first bundle is made of...

  3. Peakonsul Jaanus Kirikmäe andis teenetemärgi praost Thomas Vagale / Airi Vaga ; foto: Harold Karu

    Index Scriptorium Estoniae

    Vaga, Airi, 1940-

    2008-01-01

    President Toomas Hendrik Ilves annetas iseseisvuspäeva puhul USA I praostkonna praostile Thomas Vagale Valgetähe IV klassi teenetemärgi. Teenetemärgi andis Thomas Vagale üle Eesti Vabariigi peakonsul Jaanus Kirikmäe

  4. A new estimate of the Khirzhnits corrections to the zero temperature Thomas-Fermi equation-of-state

    International Nuclear Information System (INIS)

    Szichman, H.; Krumbein, A.D.; Eliezer, S.

    1984-09-01

    A method is proposed for estimating the zero temperature limit of the Khirzhnits corrections to the Thomas-Fermi equation-of-state by extrapolation of the finite-temperature results. The cold curves so obtained for Ti, Fe, Cu and Ta are compared with experimental results as well as with those calculated using other variations of the Thomas-Fermi model

  5. TUZ, Resonance Integrals in Unresolved Region, Various Temperature, From Porter-Thomas Distribution

    International Nuclear Information System (INIS)

    Kuncir, G.F.

    1969-01-01

    1 - Nature of physical problem solved: TUZ computes resonance integrals for a wide variety of temperatures, compositions, and geometries for the unresolved resonances. 2 - Method of solution: The resonances are considered to be defined by an average over the Porter-Thomas distribution of neutron widths

  6. Play as a Basic Pathway to the Self: An Interview with Thomas S. Henricks

    Science.gov (United States)

    American Journal of Play, 2015

    2015-01-01

    Thomas S. Henricks is the J. Earl Danieley Professor of Sociology and Distinguished University Professor at Elon University. Since receiving his doctorate in sociology at the University of Chicago, Henricks has investigated the sociology of sports from the fandom of modern American professional wrestling to the relationship between sports and…

  7. The Thomas-Reiche-Kuhn sum rule and the toroid moments

    International Nuclear Information System (INIS)

    Dubovik, V.M.

    1975-01-01

    By example of the Thomas-Reiche-Kuhn sum rule a procedure is given for calculating the retardation effects in any E-transition strengths via the toroid moments. The investigation has been performed at the Laboratory of Theoretical Physics, JINR

  8. The Importance of Peer Review: Thoughts on Knudson, Morrow, and Thomas (2014)

    Science.gov (United States)

    Fischman, Mark G.

    2014-01-01

    Knudson, Morrow, and Thomas (2014) recently summarized a number of important issues related to the quality of peer review and current peer-review practice in kinesiology. This writer endorses their six recommendations for improving peer review in kinesiology journals. The purpose of this commentary is to further highlight the importance of…

  9. A Critical Feminist and Race Critique of Thomas Piketty's "Capital in the Twenty-First Century"

    Science.gov (United States)

    Moeller, Kathryn

    2016-01-01

    Thomas Piketty's "Capital in the Twenty-first Century" documents the foreboding nature of rising wealth inequality in the twenty-first century. In an effort to promote a more just and democratic global society and rein in the unfettered accumulation of wealth by the few, Piketty calls for a global progressive annual tax on corporate…

  10. From pioneering to implementing automated blood pressure measurement in clinical practice: Thomas Pickering's legacy

    DEFF Research Database (Denmark)

    Stolarz-Skrzypek, Katarzyna; Thijs, Lutgarde; Wizner, Barbara

    2010-01-01

    Thomas G. Pickering spent most of his scientific career in carrying out research on clinical hypertension and blood pressure (BP) measurement. In our review of Pickering's seminal work, we first focused on white-coat hypertension and masked hypertension, two terms that he had introduced. Next, we...

  11. Thomas Merton Goes to Class: Pedagogy on the Borders of the Short Story

    Science.gov (United States)

    Callaghan, Michael J.

    2011-01-01

    Our thesis is more finely tuned to Thomas Merton (1915-68) the writer, more specifically, the poet/artist/writer and thinker. These are the components of the "Merton" voice. Merton senses the quality of innocence as the "sine qua non" of the poet or writer's vocation: "His art depends on an ingrained innocence which he would lose in business, in…

  12. The non-intuitive 1/2 Thomas factor: a heuristic argument with classical electromagnetism

    International Nuclear Information System (INIS)

    Chrysos, M

    2006-01-01

    We present a heuristic argument to deduce the non-intuitive 1/2 Thomas factor for an atomic electron revolving in its orbit about the nucleus. The argument, which is simple, pedagogical and accessible to physics beginners, uses elementary notions of classical electromagnetism rather than the advanced relativity concepts which are needed in any standard textbook derivation

  13. Thomas of Wroclaw (1297-1378) - Medieval bishop and scholar of English origin.

    Science.gov (United States)

    Bieganowski, Lech; Grzybowski, Andrzej

    2017-11-01

    Peter of Tilleberi (Tilbury), later known as bishop Thomas of Wroclaw, after completing his studies (in Bologna or in Montpellier) worked as a physician in northern Italy and probably in Spain. Later through Germany and Bohemia, he came to Wroclaw in 1336 where he joined the Order of St. Dominic. In 1352, Thomas was made an auxiliary bishop of the diocese of Wroclaw. After the episcopal consecration, Thomas stopped living in the abbey, but all the time he was well known both as a priest and physician. He is known as an author of several treatises on medical sciences. His most important work entitled Michi competit (i.e. It suits me) is composed of four parts: Regimen sanitatis (i.e. Hygiene), Aggregatum (i.e. Aggregation), Antidotarium (i.e. Medicine directory) and Practica medicinalis (i.e. Medical practices). Moreover, he is the author of other treatises including, for example, De phlebotomia et de iudiciis cruoris (i.e. On phlebotomy and blood content) and De urinis (i.e. On urine). Some Polish scientists claim that bishop Thomas of Wroclaw with his knowledge and industriousness functioned as a university faculty of medicine even though the University of Cracow had not been established yet.

  14. Thomas Aquinas on the Beatitudes : Reading Matthew, Disputing Grace and Virtue, Preaching Happiness

    NARCIS (Netherlands)

    ten Klooster, Anton

    2018-01-01

    What is happiness and how do we attain it? Saint Thomas Aquinas (ca. 1226-1274) devoted much time to these questions. In studying them he always returned to the beatitudes as they are found in Matthew 5:1-10. They function as the framework for his theology of human happiness. This study presents

  15. For whom the bells toll: a polyphonic fragment in Thomas Mann's 'Der Erwählte'

    NARCIS (Netherlands)

    Lichtenstein, S.

    2010-01-01

    Although many studies have been devoted to the role of music in the works of Thomas Mann, very little attention has been paid to this aspect in his novel Der Erwählte. This novel presents two main ideas, an ethical and an aesthetical one, which are connected with each other and with Mann’s critical

  16. Thomas Berdmore, dentist of His Majesty, George III, and dental calculus.

    Science.gov (United States)

    Andreana, S; Andreana, G; Gonzalez, Y M; Ciancio, S

    1996-11-01

    Thomas Berdmore's book, Disorders of Deformities of the Teeth and Gums, presents examples of early concepts of preventive dentistry and treatment of periodontal diseases. Various aspects of dental calculus formation and composition are analyzed. Also the effects of periodontal disease as seen by Berdmore are discussed, and ways of treatment in 1770 summarized.

  17. Thomas Merton’s poetics of translation in his letters to writers

    Directory of Open Access Journals (Sweden)

    Marcela María Raggio

    2016-05-01

    Full Text Available This article explores Thomas Merton’s poetics of translation as reflected in his letters to writers. There, Merton expresses his ideas on poetic translation, the methods and the experience of approaching foreign literature through translation. Then, a translation analysis of a sample revises the connection between Merton’s poetics and practice of translation.

  18. USA saadik loodab võita eestlaste poolehoiu / Joseph M. DeThomas

    Index Scriptorium Estoniae

    DeThomas, Joseph M.

    2003-01-01

    USA suursaadik Eestis Joseph DeThomas vastab on-line intervjuus Eesti Päevalehe lugejate küsimustele Iraagi ründamise, USA ja Euroopa vahelise lõhe, USA Eesti saatkonna võimaliku ümberkolimise kohta

  19. Thomas Hardy's Victorian Gothic: Reassessing Hardy's Fiction and His Gothic Sensibility.

    Science.gov (United States)

    Goldstein, Norma Walrath

    Proposing that Thomas Hardy's fiction exhibits strong Gothic sensibilities which offer insight into his artistic vision and add to the power of his fiction, creating a new form of the Gothic, a Victorian Gothic, this dissertation reassesses the Gothic strains in Hardy's fiction. The dissertation is in eight chapters: (1) Introduction to Hardy's…

  20. Jesus en geweld: Markus 12:1-12 (en par) en Thomas 65 | van Eck ...

    African Journals Online (AJOL)

    Jesus and violence: Mark 12:1-12 (and par) and. Thomas 65. As an advanced agrarian (aristocratic) society, first-century Palestine's social fabric was built on systemic tensions and conflicts between the elite (rulers) and the peasantry (the ruled). At the root of these conflicts were incompatible values (ideologies) and