61 research outputs found
Anomalous between-laboratory variability in a collaborative study of carcinoembryonic antigen immunoassay [letter]
No full textC-Link: a hierarchical clustering approach to large-scale near-optimal coalition formation
No full textCoalition formation is a fundamental approach to multi-agent coordination. In this paper we address the specific problem of coalition structure generation, and focus on providing good-enough solutions using a novel heuristic approach that is based on data clustering methods. In particular, we propose a hierarchical agglomerative clustering approach (C-Link), which uses a similarity criterion between coalitions based on the gain that the system achieves if two coalitions merge. We empirically evaluate C-Link on a synthetic benchmark data-set as well as in collective energy purchasing settings. Our results show that the C-link approach performs very well against an optimal benchmark based on Mixed-Integer Programming, achieving solutions which are in the worst case about 80% of the optimal (in the synthetic data-set), and 98% of the optimal (in the energy data-set). Thus we show that C-Link can return solutions for problems involving thousands of agents within minutes
SMAA01 collection of SYNOP reports available from LIIB (ROMA (MET COM CENTRE)) at 00, 06, 12 and 18 UTC
No full text---- The bulletin collects SYNOP reports:
FM 12 (SYNOP, Report of surface observation from a fixed land station).
(Refer to WMO No.306 - Manual on Codes for the definition of WMO international codes)
---- The SMAA01 TTAAii Data Designators decode (2) as:
T1 (S): Surface data.
T2 (M): Main synoptic hour.
A1A2 (AA): Antarctic.
(2: Refer to WMO No.386 - Manual on the GTS - Attachment II.5)
---- The bulletin collects reports from stations:
Cape phillips, Mario zuchelli station (baia terra nova) and Cape ros
SIAA20 collection of SYNOP reports available from LIIB (ROMA (MET COM CENTRE)) at 03, 09, 15 and 21 UTC
No full text---- The bulletin collects SYNOP reports:
FM 12 (SYNOP, Report of surface observation from a fixed land station).
(Refer to WMO No.306 - Manual on Codes for the definition of WMO international codes)
---- The SIAA20 TTAAii Data Designators decode (2) as:
T1 (S): Surface data.
T2 (I): Intermediate synoptic hour.
A1A2 (AA): Antarctic.
(2: Refer to WMO No.386 - Manual on the GTS - Attachment II.5)
---- The bulletin collects reports from stations:
Cape phillips, Mario zuchelli station (baia terra nova) and Cape ros
USAA01 collection of TEMP reports available from LIIB (ROMA (MET COM CENTRE)) at 00 and 12 UTC
No full text---- The bulletin collects TEMP reports:
FM 35 (TEMP, Upper-level pressure, temperature, humidity and wind report from a fixed land station).
(Refer to WMO No.306 - Manual on Codes for the definition of WMO international codes)
---- The USAA01 TTAAii Data Designators decode (2) as:
T1 (U): Upper air data.
T2 (S): Upper level pressure, temperature, humidity and wind (Part A).
A1A2 (AA): Antarctic.
(2: Refer to WMO No.386 - Manual on the GTS - Attachment II.5)
---- The bulletin collects reports from stations:
Mario zuchelli station (baia terra nova)
---- WMO No.9 - Volume C1 'Remarks' field:
NOTE: FROM OCTOBER TO FEBRUARY ONL
Long Duration Balloon flights development (Italian Space Agency)
No full textStratospheric balloons are rapidly becoming the vehicle of choice for near space investigations and earth observations by a variety of science disciplines. With the ever increasing research into climatic change, earth observations, near space research and commercial component testing, instruments suspended from stratospheric balloons offer the science team a unique, stable and reusable platform that can circle the Earth in the polar region or equatorial zone for thirty days or more. The Italian Space Agency (ASI) in collaboration with Andoya Rocket Range (Andenes, Norway) has opened access in the far northern latitudes above 78o N from Longyearbyen, Svalbard. In 2006 the first Italian UltraLite Long Duration Balloon was launched from Baia Terra Nova, Mario Zuchelli station in Antarctica and now ASI is setting up for the their first equatorial stratospheric launch from their satellite receiving station and rocket launch site in Malindi, Kenya. For the equatorial missions we have analysed the statistical properties of trajectories considering the biennial oscillation and the seasonal effects of the stratospheric winds. Maintaining these launch sites offer the science community 3 point world coverage for heavy lift balloons as well as the rapidly deployed Ultra-light payloads and TM systems ASI developed to use for test platforms, micro experiments, as well as a comprehensive student pilot program. This paper discusses the development of the launch facilities and international LDB development
IUSK01 collection available from LIIB (ROMA (MET COM CENTRE)) as BUFR at 00 and 12 UTC
No full text---- The bulletin is coded as BUFR code form:
FM 94 (BUFR, Binary universal form for the representation of meteorological data) .
(Refer to WMO No.306 - Manual on Codes for the definition of WMO international codes)
---- The IUSK01 TTAAii Data Designators decode (2) as:
T1 (I): Observational data (Binary coded) - BUFR.
T2 (U): Upper air.
A1 (S): Radiosondes/pibal reports from fixed land stations (entire sounding) TEMP (parts A, B, C, D).
A2 (K): 180° - 90°E southern hemisphere.
(2: Refer to WMO No.386 - Manual on the GTS - Attachment II.5)
---- Correspondence with the C13 common BUFR/CREX code table:
(002/004) or (Vertical soundings (other than satellite) -- Upper-level temperature/humidity/wind reports from fixed-land stations (TEMP)) data type / data sub-type.
---- The bulletin collects reports from stations:
Mario zuchelli station (baia terra nova
ISMK01 collection of SYNOP reports available from LIIB (ROMA (MET COM CENTRE)) as BUFR at 00, 06, 12 and 18 UTC
No full text---- The bulletin is coded as BUFR code form:
FM 94 (BUFR, Binary universal form for the representation of meteorological data) .
(Refer to WMO No.306 - Manual on Codes for the definition of WMO international codes)
---- The ISMK01 TTAAii Data Designators decode (2) as:
T1 (I): Observational data (Binary coded) - BUFR.
T2 (S): Surface/sea level.
A1 (M): Main synoptic observations from fixed land stations (SMxx).
A2 (K): 180° - 90°E southern hemisphere.
(2: Refer to WMO No.386 - Manual on the GTS - Attachment II.5)
---- Correspondence with the C13 common BUFR/CREX code table:
(000/002) or (Surface data ¿ land -- Main synoptic observations from fixed-land stations (SYNOP)) data type / data sub-type.
---- The bulletin collects reports from stations:
Mario zuchelli station (baia terra nova
A Measurement of alpha-s from jet rates at the Z0 resonance
No full textWe have determined the strong coupling alpha(s) from measurements of jet rates in hadronic decays of Z0 bosons collected by the SLD experiment at SLAC. Using six collinear and infrared safe jet algorithms we compared our data with the predictions of QCD calculated up to second order in perturbation theory, and also with resummed calculations. We find alpha(s)(M(Z)2)=0.118+/-0.002(stat)+/-0.003(syst) +/-0.010 (theory), where the dominant uncertainty is from uncalculated higher order contributions
First Report of <i>Phytophthora nicotianae</i> Causing Crown Rot of Strawberry in the United States
No full text- …
