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| Parallelism in Time: Can Parts of the solution later in time be | Thu, 29 Jul |
| Parallelism in Time: Can parts of the solution later in time be | Tue, 27 Jul |
| GTP Seminar | Tue, 27 Jul |
| UCAR Childcare Center Update | Fri, 23 Jul |
| Acting ASP Director | Thu, 22 Jul |
| Do you have benefit questions? Were here to help! | Thu, 22 Jul |
| HIRE Training on Friday! | Wed, 21 Jul |
| Search Full-Text of the New York Times from Library Web Site | Wed, 21 Jul |
| New Hires and Departures | Wed, 21 Jul |
| UCAR President's Council Summary Notes -- 16 July 2004 | Tue, 20 Jul |
| Pets Are People Too | Tue, 20 Jul |
| New Health Insurance Option for 2005 Approved | Mon, 19 Jul |
| Skills/Learning Exchange | Mon, 19 Jul |
| Raster-based streamflow analysis and visualization | Mon, 19 Jul |
| Summer Ozone Challenge | Wed, 14 Jul |
PARALLELISM IN TIME: Can parts of the solution later in time be computed before the solution earlier in time is known? Martin J. Gander McGill University and University of Geneva Large scale time dependent problems can only be solved using parallel computers. To do such simulations, time marching schemes are commonly used, and at each time step the computation is done in parallel using all the processors available. Once the time step is solved, the simulation advances to the next time step. This approach is effective as long as each time step is costly enough to lead to an effective computation to communication ratio of the process. If however hundreds of thousands of time steps need to be simulated, or very many processors are available, the scalability of this approach is often lost. It would be of great advantage to be able to compute the solution parallel in time as well, which would add a fourth dimension to the parallelization of the process. Is it possible to do useful computations at future time steps before the current time step results are known? I will first survey in this talk several classical approaches in the literature which have tried to do so, and show the positive and negative results known for these classical approaches. I will then discuss a new approach introduced in 2001 by Lions, Maday and Turinici called the parareal algorithm. In this algorithm, the time domain is decomposed into subdomains in time, and then an iteration parallel in time using fine grid approximations on the time subdomains and a coarse grid correction in time is used to construct a better and better approximation in time of the evolution problem. I will show that the parareal algorithm can be put into the context of the classical methods surveyed at the beginning of the talk and also present new convergence results for the parareal algorithm, which show that indeed the solution later in time an be successfully approximated before an accurate approximation earlier in time is available. THURSDAY, 29 JULY 2004, CHAPMAN ROOM, MESA LAB, 11 a.m.
For more information, contact Amik St. Cyr at 1287, amik@ucar.edu.
(Posted Thu 29 Jul to Thu 29 Jul)
PARALLELISM IN TIME: Can parts of the solution later in time be computed before the solution earlier in time is known? Martin J. Gander McGill University and University of Geneva Large scale time dependent problems can only be solved using parallel computers. To do such simulations, time marching schemes are commonly used, and at each time step the computation is done in parallel using all the processors available. Once the time step is solved, the simulation advances to the next time step. This approach is effective as long as each time step is costly enough to lead to an effective computation to communication ratio of the process. If however hundreds of thousands of time steps need to be simulated, or very many processors are available, the scalability of this approach is often lost. It would be of great advantage to be able to compute the solution parallel in time as well, which would add a fourth dimension to the parallelization of the process. Is it possible to do useful computations at future time steps before the current time step results are known? I will first survey in this talk several classical approaches in the literature which have tried to do so, and show the positive and negative results known for these classical approaches. I will then discuss a new approach introduced in 2001 by Lions, Maday and Turinici called the parareal algorithm. In this algorithm, the time domain is decomposed into subdomains in time, and then an iteration parallel in time using fine grid approximations on the time subdomains and a coarse grid correction in time is used to construct a better and better approximation in time of the evolution problem. I will show that the parareal algorithm can be put into the context of the classical methods surveyed at the beginning of the talk and also present new convergence results for the parareal algorithm, which show that indeed the solution later in time can be successfully approximated before an accurate approximation earlier in time is available.
For more information, contact Amik St. Cyr at 1287, amik@ucar.edu.
(Posted Tue 27 Jul to Sat 3 Jul)
Intermittency and Multifractality in Two-dimensional with Drag You are invited to attend a GTP Seminar presented by Yue-Kin Tsang from Physics Department, University of Maryland on Wednesday, 28 July 2004 at 3:30 p.m. at Foothills Lab 2, Room 1001
For more information, contact Scott Briggs at 1607, sbriggs@ucar.edu.
(Posted Tue 27 Jul to Wed 28 Jul)
The UCAR Child Care Center will start providing child care on Monday, August 30th. The Director is Ms. Mia Strugar-Fritch. She is currently residing in CG-4, room 2510, x8539 or cell (303)819-8509. She can also be reached by e-mail at mstrugarfritsch@cclc.com. The provider, Childrens' Creative Learning Centers, plan to have an Open House on August 25th, followed by a family day on August 26th offering lunch with kids and an evening session. The center will also be open on August 26th for visitors. More information on these activities will be forthcoming. If you are interested in the new program spaces are still available! Information on the Center can be found at: http://www.cclc.com/corp_fam/ucar/reg.html
For more information, contact Betty Valent at 1661, bvalent@ucar.edu.
Or see the web page at
Childrens' Creative Learning Centers.
(Posted Fri 23 Jul to Thu 29 Jul)
To All Staff, Tom Bogdan and I are pleased to announce that Maura Hagan has accepted the position of Acting ASP Director for a period up to the return of Al Cooper from NSF. Tim Killeen
For more information, contact Catherine Shea at 1112, cshea@ucar.edu.
(Posted Thu 22 Jul to Wed 28 Jul)
Having trouble with an insurance claim? Need information about the many benefits you receive? Call your Human Resources Department for help. Cyd Perrone, x8710 and Kristen Alipit, X8706 will assist in getting your benefits questions answered. Contact us today!
For more information, contact Kristen Alipit at 8706,
kalipit@ucar.edu.
(Posted Thu 22 Jul to Wed 28 Jul)
If you are planning to hire a new employee within the next few months or if it has been awhile since you completed training, this is the class for you! Hiring Information, Resources and Enlightenment (HIRE) training provides a solid overview of federal laws relative to hiring and explains the UCAR hiring process. This class is offered: Friday, July 23rd 9:00 a.m. to 12:00 noon CG4, room 2020 3065 Center Green Drive Pre-registration is required.
For more information, contact Nancy Wade at 8717, nwade@ucar.edu.
(Posted Wed 21 Jul to Tue 27 Jul)
NCAR/UCAR/UOP staffs have access to the full-text of the New York Times including NYT Book Review and Magazine from January 1, 2000 to the present through the information provider, NewsBank (click on NewsBank at the Info Resources page of the Library Web site, http://www.ucar.edu/library/resources.html). The 466 other newspapers available for searching and reading in NewsBank include USA Today, Christian Science Monitor, Washington Post, Washington Times, Chicago Tribune, Denver Post, Los Angeles Times, and the Dallas Morning News. Coverage is listed by the title of each newspaper and varies starting from the 1980s to present.
For more information, contact Leslie Forehand at 8505,
forehand@ucar.edu.
Or see the web page at
Library's Info Resources Web Page.
(Posted Wed 21 Jul to Tue 27 Jul)
New Hires Todd Applewhite, software engineer/programmer with RAP. FL2 room 1018A, ext. 8466 Angela Belote, casual - graduate research assistant with ACD. ML room 593A, ext. 1414 Gregory Bruning, technician with ATD. Jeffco room 27, ext. 1076 Tatiana Burek, student assistant with SCD. ML room 15C, ext. 1824 Katherine Derner, student assistant with ATD. OOS Stephen Dowdy, systems administrator with RAP. FL2 room 2015, ext. 2869 Jack Fino, casual - event services with Occupancy Pool. Mark Gallup, student assistant with ATD OOS Lindsay Husted, student assistant with ATD. OOS Shauna Kinkela, visitor with Visiting Scientists Program. OOS Stacy Kleefisch, student assistant with ATD. OOS Lynda Mcginley, systems administrator with Communications Pool. ML room 31M, ext. 1821 Nicholas Novella, student assistant with ATD. OOS Max Peterson, student assistant with ATD. OOS Jacob Pratt, student assistant with RAP. FL2 room 1017, ext. 2826 Michael Raines, software engineer/programmer with RAP. FL2 room 2050A, ext. 2870 Kirk Spowart, student assistant with ATD. OOS Robert Tan, budget analyst with NCAR Directors Office. ML room 515A, ext. 1105 Augustin Vintzileos, visitor with Visiting Scientists Program. OOS Departures Harold Badoni, 25 June Jarrett Barber, 16 July Louis Dimarco, 9 July Kathryn Fisher, 6 July John Smith, 16 July Eugene Wahl, 17 July
For more information, contact Kristen Alipit at 8706,
kalipit@ucar.edu.
(Posted Wed 21 Jul to Tue 27 Jul)
Present for all items: Rick Anthes, Jack Fellows, Katy Schmoll, Larry Winter and Tim Killeen Present for items 1 and 2: Bob Roesch, Lara Cervantes, Meg McClellan Present for item 5: Jeff Reaves, Steve Dickson, Meg McClellan We began the meeting at 9:00 am. 1. Health Plan. The Council approved the implementation of a new healthcare option to employees effective 1 January 2005. HR will proceed with development of a High Deductible Healthcare Plan (HDHP) coupled with a Healthcare Savings Account (HSA). This option will be in addition to the health options currently provided to employees. More details on this option will be forthcoming in the future. 2. Immigration-Employment Law Issue. Meg McClellan summarized a serious issue that has arisen with regard to foreign scientists attempting to obtain permanent residency visas. Although the governing regulations have not changed, the Customs and Immigration Service (CIS) has become more stringent in its requirement of evidence from employers in meeting the requirements of "permanent employment" for a foreign scientist. The category under which UCAR foreign scientists have petitioned for permanent residency in the past, "Outstanding Professors and Researchers", requires that there be an offer of a "permanent research position". For a position to be "permanent", it must be either "tenured, tenure-track, or for a term of indefinite or unlimited duration where the employee will normally have an expectation of continued employment unless there is good cause for termination." Under the current offer letter, a scientist is told that his/her position is subject to UCAR Policy 2-2-1, NCAR Scientific Appointments, and is a term position. In order to meet the immigration regulations, UCAR would have to change this offer letter for foreign scientists attempting to gain permanent residency visas, to indicate that the offer is for a "permanent" position. Any wording that the position was subject to UCAR policies, including UCAR Policy 2-2-1, and that the scientist may be terminated for cause, including but not limited to a violation of UCAR policies and non-renewal of funding, may not be acceptable to CIS, as it has rejected similar language in recent cases. However, any language in an offer letter to a foreign scientist indicating a "permanent" position implies a guarantee that no other UCAR employees have. If UCAR changes the wording of the offer letter to reference an offer of "permanent employment", it will mean that a foreign scientist may have contract rights under employment law that provide him/her with rights that are not available to other employees. After some discussion it was decided that UCAR would not change the wording of its offer letters to foreign scientists to include a reference to "permanent" employment. UCAR will work with our immigration law expert, Emily Curray, on any other approaches that would be helpful. UCAR will also address, on a case-by-case basis, any individual who may warrant special consideration and an offer letter that would extend "permanent" employment to that individual. Because universities and other institutions are likely to be in similar positions, Jack agreed to look at avenues for advocacy on this issue. 3. Childcare Center Status. Construction is under way at the UCAR Childcare Center with a planned opening of 30 August 2004. Several open houses will be scheduled before the actual opening so that UCAR employees can see the facility. Thirty children are currently enrolled in the Center; the majority are for part-time care. Employees at the University of Colorado, Univ. of Colorado Federal Credit Union, Ball Aerospace, and the Boulder Community Hospital will be invited to send their children. 4. Field Project Assessment Policy. The Council approved the proposed policy for assessment of field projects for safety issues. 5. Space Issues. The Council considered the allocation and use of the Foothills Lab liaison office space and decided that Rooms 2001 and 2002 will be temporarily assigned to the Acting Associate Director of the Sun, Weather and Climate Laboratory (Annick Pouquet), Rooms 2003 and 2004 will remain as liaison offices for the UCAR President and NCAR Deputy Director. The open area will be available for support staff for the UCAR President, NCAR Deputy Director and SWCL Director. The Council also reviewed plans for CG-1 and the recommendations of the UCAR Space Implementation Committee. The Council was pleased with the auditorium/cafeteria layout, acknowledging that while cafeteria seating would be limited during large conferences, it should be adequate for regular use throughout most of the year. The Council determined that a full-scale library for the Center Green campus was desirable and approved the proposed design that adds small meeting rooms to the library. The Council determined that the number of conference rooms included in the design was desirable to serve the needs of the CG conference facility and decided that the current third floor "board room" should remain as a conference room and be available on the UCAR-wide room reservation system. The Council requested that the designer make an attempt to "modularize" the proposed data labs so that they could be easily and cost effectively repurposed in the future if needed. The Council accepted the plan for a separate computer room in CG-1, with the understanding that it would be available to other building occupants if needed. In considering the design and use of the CG-1 space, the Council took the view that CG-1 will first and foremost be the institution's main conference center, regardless of who occupies the office space. With that in mind the Council is intent on maximizing the size and use of the auditorium, including auxiliary conference rooms and breakout rooms. The library is viewed in the same vein, as an augmentation of the conference center and a resource for workshop and seminar participants as well as CG inhabitants. Finally, the CG-1 conference rooms and library will serve the entire CG campus, which could conceivably be expanded in the future. We adjourned at 11:45 am.
For more information, contact Rick Anthes at 1652, anthes@ucar.edu.
Or see the web page at
UCAR President's Council.
(Posted Tue 20 Jul to Mon 26 Jul)
Call the Pet Care Connection for free information and referrals on all types of pet care needs. You can make requests on any topic for any animal species. Theyll save you time and give you the information necessary to make the best possible decisions. For more information, visit the link below or call 1-888-610-2273.
For more information, contact Kristen Alipit at 8706,
kalipit@ucar.edu.
Or see the web page at
Work-Life-Options.
(Posted Tue 20 Jul to Mon 26 Jul)
The Presidents Council has approved the addition of a new health insurance option for employees beginning in January of 2005. This new option will include a High Deducible Healthcare Plan (HDHP) coupled with a Healthcare Savings Account (HSA). Current health insurance options will be maintained in 2005. The options available in 2005 will be Kaiser HMO, CIGNA HMO, CIGNA PPO, and the new CIGNA HDHP. Additional information concerning the new HDHP option will be released as the details of the plan are finalized. Comprehensive information on plan options will be available in September, and employee meetings to discuss the plans and answer questions will be held on all campuses between September and November. Annual enrollment for all benefit options will take place in November. Questions concerning health insurance may be directed to Cyd Perrone or Laurie Carr in Human Resources.
For more information, contact Laurie Carr at 8702, lcarr@ucar.edu.
(Posted Mon 19 Jul to Sun 25 Jul)
Did you know you have a great resource right at your fingertips? If you'd like to connect with others in the organization willing to share knowledge and skills that may help you grow in your career, or contact someone with specific questions about a process, procedure, or technical application... the Skills/Learning Exchange is here for you! The Exchange is a database of UCAR employees willing to serve as learning partners to share experiences, skills, knowledge, and resources with other staff members. Using the system is quick and easy. As a learning partner, you self-enroll in the Exchange to build a short personal profile listing the skills/knowledge (e.g., education, training work experience, etc.) youd like to share with others. You establish personal parameters around when and how youd like others to connect with you. For those seeking learning partners, a quick search of the Exchange can locate individuals with the necessary skills. What a great way for employees to collaborate, share information and resources, as well as gain new skills and knowledge! Interested in finding out more? Check out the Skills/Learning Exchange web site at: https://www.fin.ucar.edu/sle/slmainmenu.jsp.
For more information, contact Cheryl Cristanelli at 8708,
cherylc@ucar.edu.
Or see the web page at
Skills Learning Exchange.
(Posted Mon 19 Jul to Sun 25 Jul)
SPEAKER: Richard Koehler Forecast Decision Training Branch - COMET Program National Weather Service/NOAA, Boulder, CO DATE: July 26, 2004 LOCATION: Foothills Lab, FL2, Room 1001 TIME: 2 p.m. TITLE: Raster-based streamflow analysis and visualization or Keeping the 'natural' in natural streamflow ABSTRACT: The annual, seasonal, and daily discharge patterns determine many of the physical and biological properties of a stream. Natural short- and long-term variations are part of normal streamflow processes whereas artificial short- and long-term fluctuations can disrupt natural processes. It is critical to recognize and identify such artificial fluctuations and disturbances to have a more complete understanding of river systems. This understanding can be used to modify current river management efforts to achieve more natural streamflow regimes. A new and innovative dual-timescale raster-based procedure is presented to visualize large datasets and to quantify streamflow characteristics using grid-correlograms and patch analysis. This method is applied to selected stations on the Upper Colorado River Basin. In the case of the stream-gage at Lees Ferry, AZ, the raster-based image shows how the natural streamflow regime has been severely disrupted by Lake Powell reservoir management.
For more information, contact Richard Koehler at 303-497-8369,
rkoehler@comet.ucar.edu.
(Posted Mon 19 Jul to Mon 26 Jul)
July 14th - August 31st Help Clear the Air Participate in the Summer Ozone Challenge! Ozone at ground level is a harmful pollutant. What can you do about it?... Visit the Boulder County Clean Air Consortium link below and pledge participation.
For more information, contact Karl Hanzel at 8479, karl@ucar.edu.
Or see the web page at
Boulder County Clean Air Consortium.
(Posted Wed 14 Jul to Wed 28 Jul)
This is a sampling of the new books available at the NCAR Library. These books and others will be on display at the Foothills Library for the upcoming week, followed by a display period of one week at the Mesa Library. For a complete list of new titles on display at both the Foothills and Mesa locations please access this Web address below and then select Information Desk: