scholarly journals Recent Observations of the Beams in SS 433

1989 ◽  
Vol 8 ◽  
pp. 403-408
Author(s):  
R.C. Vermeulen
Keyword(s):  
Optical Spectra ◽  
Ss 433 ◽  
Preliminary Results ◽  
Rapid Sequence ◽  
The World

ABSTRACTPreliminary results are presented of an intensive multifrequency observing campaign on SS 433 conducted in 1987. There were participants from all over the world; they brought all the observations together at the 1988 Dwingeloo workshop on SS 433. With a rapid sequence of VLBI maps, we have been able to follow the onset and evolution of a series of radio flares. We have also obtained a wealth of optical spectra allowing studies of the variability of the Doppler shifted lines on timescales of hours. There is little correlation between the activity in the radio regime, and that seen in the Doppler shifted lines.

scholarly journals Analyses of the LMC Novae

1999 ◽  
Vol 190 ◽  
pp. 391-392
Author(s):  
Karen M. Vanlandingham ◽  
Greg J. Schwarz ◽  
Sumner Starrfield ◽  
Peter H. Hauschildt ◽  
Steven N. Shore ◽  
...  
Keyword(s):  
Stellar Evolution ◽  
Large Magellanic Cloud ◽  
Optical Spectra ◽  
Classical Novae ◽  
Preliminary Results ◽  
Elemental Abundances ◽  
Ultraviolet Spectra ◽  
The Past ◽  
Consistent Manner ◽  
Ism Abundances

In the past 10 years, 6 classical novae have been observed in the Large Magellanic Cloud (LMC). We have begun a study of these objects using ultraviolet spectra obtained by IUE and optical spectra from nova surveys. We are using the results of this study to further our understanding of novae and stellar evolution.Our study includes analysis of both the early, optically thick spectra using model atmospheres (Hauschildt et al. 1992), and the later nebular spectra using optimization of photoionization codes (Ferland 1996; James & Roos 1993). By analysing all the LMC novae in a consistent manner, we can compare their individual results and use their combined properties to calibrate Galactic novae. In addition, our studies can be used to determine the elemental abundances of the nova ejecta, the amount of mass ejected, and the contribution of novae to the ISM abundances. To date we have analysed Nova LMC 1988#1 (Schwarz et al. 1998) and Nova LMC 1990#1 (Vanlandingham et al. 1999), and have obtained preliminary results for Nova LMC 1991. The results of this work are presented in this poster.

scholarly journals DETERMINATION OF E AND G OBSERVABLES IN η PHOTOPRODUCTION ON THE CLAS FROZEN SPIN TARGET (FROST)

2014 ◽  
Vol 26 ◽  
pp. 1460115
Author(s):  
◽  
IGOR SENDEROVICH ◽  
B. T. MORRISON ◽  
M. DUGGER ◽  
B. RITCHIE ◽  
...  
Keyword(s):  
Baryon Spectrum ◽  
Preliminary Results ◽  
Extensive Data ◽  
Polarized Protons ◽  
The World ◽  
Double Polarization ◽  
Linearly Polarized ◽  
Beam Incident ◽  
Polarization Observables

Polarization observables are vital for disentangling overlapping resonances in the baryon spectrum. Extensive data have been collected at Jefferson Lab in Hall B with circularly and linearly polarized tagged photon beam incident on longitudinally polarized protons provided by the Frozen Spin Target (FROST). The focus of the described work is on η photoproduction, which acts as an "isospin filter", isolating the N*(I = 1/2) resonances. Preliminary results for the double-polarization observables E and G are presented. There are currently no data on these in the world database for η photoproduction.

Preliminary results of bowl trapping bees (Hymenoptera, Apoidea) in a southern Brazil forest fragment

2013 ◽  
Vol 1 (2) ◽  
pp. 1 ◽  
Author(s):  
Rodrigo B. Gonçalves ◽  
Priscila S. Oliveira
Keyword(s):  
Taxonomic Composition ◽  
Statistical Analyses ◽  
Species Number ◽  
Southern Brazil ◽  
Forest Fragment ◽  
Preliminary Results ◽  
The Core ◽  
The World ◽  
Different Color

In recent years bowl traps have gained attention as a useful method for sampling bees and are now commonly used across the world for this purpose. However, specific questions about the method itself have not yet been tested on different regions of the globe. We present the preliminary results of bowl trapping in a Semidecidual Seasonal forest fragment in southern Brazil, including the test of two different color bowls, two different habitats, and the interaction of these variables in bee species number and composition. We used blue and yellow bowls in the border and in the core trails of the forest fragment. In five sampling days between October to December bowl traps captured 745 specimens of 37 morphospecies, with Halictinae bees being the richest and most abundant group. Non parametrical statistical analyses suggested that different colors of bowl traps influenced bee richness and composition and thus, they should be used together for a more complete sampling. Different trails influenced only the composition, while the interaction with different colors did not have a significant effect. These results, as well as the higher taxonomic composition of the inventoried bees, are similar to other studies reported in the literature.

TextSumIt: a Semantic Single Document Summarization Model on Android Mobile Device

2012 ◽  
Vol 263-266 ◽  
pp. 1902-1909
Author(s):  
Oi Mean Foong ◽  
Mellissa Lee
Keyword(s):  
World Wide Web ◽  
Mobile Devices ◽  
Mobile Phones ◽  
Mobile Device ◽  
World Wide ◽  
Information Overload ◽  
Limited Time ◽  
Preliminary Results ◽  
The World ◽  
Access Information

The explosion of information in the World Wide Web is overwhelming for readers with limitless information. Large internet articles or journals are often cumbersome to read as well as comprehend. More often than not, readers are immersed in a pool of information with limited time to assimilate all of the articles. As technology advances, it becomes more convenient to access information on-the-go, i.e., portability of information by utilizing mobile devices. In this research, a semantic and syntatic based summarization is implemented in a text summarizer to solve the information overload problem whilst providing a more coherent summary. The objective is to integrate WordNet into the proposed system aka TextSumIt which condenses lengthy documents into summarized text. The empirical experiments show that it produces satisfactory preliminary results on Android mobile phones.

scholarly journals Preliminary results of the Analysis of Precipitation Processes in the Eastern Ebro Subbasin (WISE-PreP) Field Campaign within HILIAISE

2021 ◽  
Author(s):  
Joan Bech ◽  
Mireia Udina ◽  
Bernat Codina ◽  
Sergi Gonzalez ◽  
Albert Garcia ◽  
...  
Keyword(s):  
Land Surface ◽  
Water Cycle ◽  
Weather Prediction ◽  
Surface Characteristics ◽  
Ensemble Prediction ◽  
Field Campaign ◽  
Preliminary Results ◽  
The World ◽  
Precipitation Processes ◽  
Semi Arid

<p>Understanding future changes of the terrestrial water cycle and their interaction with human activity, with emphasis on agricultural areas, was selected as one of the World Climate Research Programme (WCRP) Grand Challenges, entitled “Water for the Food Baskets of the World”. Within this framework, the scientific objectives of the “Human Imprint on Land surface Interactions with the Atmosphere over the Iberian Semi-arid Environment” (HILIAISE) are the characterization of evapotranspiration and other key processes of water cycle in semi-arid environments. For this purpose, an international field campaign, scheduled for 2021, has been planned focused on a region with highly contrast surface characteristics (irrigated vs non-irrigated areas), particularly during summer.</p><p>An overview and preliminary results of a specific project (WISE-PreP) within HILIAISE is given here. WISE-PreP was designed to study precipitation processes aiming to characterize possible differences in precipitation induced by surface characteristics. For this purpose, planned instrumentation for the campaign includes the deployment of three sites equipped each with a vertical radar Doppler Micro Rain Radar (MRR) and a laser disdrometer (PARSIVEL), covering both irrigated and non-irrigated sites, with three disdrometers (model PARSIVEL-2) and three MRRs (one model MRR-2 and two MRR-PROs). Time series of vertical precipitation profiles will be recorded to study microphysical processes trough the evolution of raindrop size distributions and related variables including precipitation intensity or convective vs stratiform rainfall regimes. Additional observations include raingauge data, C-band Doppler weather radar observations, and satellite products, as well as high resolution deterministic numerical weather prediction model data plus Ensemble Prediction Systems (EPS) model output. Funding for this research was provided by “Analysis of Precipitation Processes in the Eastern Ebro Subbasin” (WISE-PreP, RTI2018-098693-B-C32) and the Water Research Institute (IdRA) of the University of Barcelona.</p>

Preliminary Results for International Tourism in 2002; Air Transport after 11 September

2003 ◽  
Vol 9 (1) ◽  
pp. 95-110 ◽  
Author(s):  
John G.C. Kester
Keyword(s):  
Air Transport ◽  
International Tourism ◽  
Traffic Data ◽  
Short Term ◽  
Preliminary Results ◽  
The Pacific ◽  
The World ◽  
World Tourism Organization ◽  
Regional Associations ◽  
Tourism Organization

Preliminary results for 2002, as presented by the World Tourism Organization (WTO), show a reasonable improvement in tourism demand with international tourism worldwide increasing by an estimated 3%. Asia and the Pacific and the Middle East led growth, Africa grew above the world average and Europe below, while the Americas slightly decreased. In the second part of this issue's Databank, the author takes a closer look at the evolution of air transport after 11 September 2001, drawing on data from ICAO and various regional airline associations. The monthly traffic data reported by ATA, AEA and AAPA, the regional associations for, respectively, the major North American, European and Asian airlines, constitute a valuable source of timely information on the short-term evolution of this part of the tourism flow over the last few years.

scholarly journals Canadian Municipalities and Conditions of Fiscal Austerity in International Perspective: A Report and Some Observations

2013 ◽  
Vol 15 (3) ◽  
pp. 274-278
Author(s):  
James Lightbody ◽  
David Walker
Keyword(s):  
Local Government ◽  
Field Research ◽  
International Perspective ◽  
Government Officials ◽  
Preliminary Results ◽  
The World ◽  
Innovation Project ◽  
Fiscal Austerity ◽  
Fiscal Prudence ◽  
Local Government Officials

In this report, the authors summarize the well-known historic conditions underpinning the current fiscal plight of Canadian municipalities. Within this overall context the austerity strategies employed by local government officials elsewhere in the world become increasingly suggestive for authorities desperately trying to reconcile service demands with fiscal prudence. Some general observations from recent reports to the generation-old Fiscal Austerity and Urban Innovation project, coupled with preliminary results of the authors' own field research, are advanced.

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