The Dark UNiverse Explorer (DUNE) is a wide-field imaging mission concept whose primary goal is the study of dark energy and dark matter with unprecedented precision. To this end, DUNE is optimised for weak gravitational lensing, and also uses complementary cosmological probes, such as baryonic oscillations, the integrated Sachs-Wolf effect, and cluster counts. Immediate additional goals concer...

Wireless sensor network (WSN) is one of the mainstay technologies in Internet of Things. In WSNs, clustering is to organize scattered sensor nodes into a cluster-topology network for communications. Existing efforts on clustering intensively focus on the energyefficiency issue. However, in mission-critical applications, a fast clustering scheme, which can not only gather sensory data immediatel...

Since the initial introduction of Open Source Cluster Application Resources (OSCAR), this software package has been a well-accepted choice for building high performance computing systems. As it continues to be applied to mission-critical environments, high availability (HA) features therefore are needed to be included in OSCAR cluster. In this paper, we provide a HA solution for OSCAR cluster. ...

In January 2003, the Chandra Orion Ultradeep Project (COUP) detected about 1400 young stars during a 13.2 day observation of the Orion Nebula Cluster (ONC). This paper is a study of the X-ray properties of a well-defined sample of 28 solar-mass ONC stars based on COUP data. Our goals are to characterize Universe Division, Science Mission Directorate NASA Headquarters

Enhancing the educational corporations is truly challenging mission due to the highly competitive nature of the business. Currently, there is emerging development within organizations to capitalize on their internal resources. This paper is taking data mining approach to strategize marketing for postgraduate studies by means of cluster analysis. The experiments were carried out using Oracle Dat...

tried to explain why each cluster existed. These explanations were then assessed with the assistance of JPL mission experts. As a result of these reviews, one of the explanations was confirmed, two were rejected, and the remaining three were modified. These confirmed and modified explanations 35 Activities    FlightOperations    DataAccess/Delivery HardwareFailure NormalAc...

All physically observable field parameters within the magnetosphere, such as particle densities and electric and magnetic fields, vary in both space and time. Understanding the underlying physical processes requires knowledge of both temporal and spatial variations of these parameters. Analysing data acquired simultaneously from two satellites allows determination of the component of the spatia...

Please note that terms and conditions apply. In-flight calibration of the spin axis offset of a fluxgate magnetometer with an electron drift instrument View the table of contents for this issue, or go to the journal homepage for more Abstract We show that the spin axis offset of a fluxgate magnetometer can be calibrated with an electron drift instrument (EDI) and that the required input time in...

Because of its proximity and its youth, the Pleiades open cluster of stars has been extensively studied and serves as a cornerstone for our understanding of the physical properties of young stars. This role is called into question by the "Pleiades distance controversy," wherein the cluster distance of 120.2 ± 1.5 parsecs (pc) as measured by the optical space astrometry mission Hipparcos is sign...

High availability (HA) computing has recently gained much attention, especially in enterprise and mission critical systems. The HA is now a necessity that is no longer regarded as a luxury feature. Thus, we, conjunctively with the open source community, are in process of enhancing the HA feature to Open Source Cluster Application Resources (OSCAR), a widely adopted Linux PC cluster system. Serv...