sparkbangbuzz.com的 10 大竞争对手

amasci.com

contains both useful science education and total crack-brained detrius. amateur science resources, many new science projects for kids, textbook errors, tesla coils, physics teaching, electricity articles, electrostatics projects. weird science including antigrav, free energy, ball lightning, anomaly reporting, diy projects, childhood brain tricks.

home.earthlink.net

earthlink personal webspace. this earthlink personal webspace is currently being migrated. questions can be directed to 800-377-8300.

circuitcellar.com

System safety assessment provides a standard, generic method to identify, classify, and mitigate hazards. It is an extension of failure mode effects and criticality analysis and fault-tree analysis that is necessary for embedded controller specification. System safety assessment was originally called ”system hazard analysis.” The name change was probably due to the system safety assessment’s […]

tu-harburg.de

Die TU Hamburg ist eine kompakte Technische Universität mit einem klaren Profil in der Forschung und modernen, praxisorientierten Lernmethoden.

wsu.edu

Washington State University —WSU is a top research university dedicated to solving problems and improving lives 6 campuses11 academic collegesExtension offices in all 39 Washington counties and on the Colville Reservation4 research and extension centers What's Happening At WSU A new approach to climatechange adaptation Communities on the frontlines of climate changeshould take the lead

ann-geophys.net

Abstract. Solar wind and its transients drive the dynamics of Earth’s magnetosphere. Interplanetary coronal mass ejections (ICMEs) induce the largest variations in the near-Earth space, but significant geomagnetic activity can also be driven by high-speed streams (HSSs) and stream interaction regions (SIRs). Solar wind – magnetosphere interaction may lead to fluctuations in the inner magnetosphere and, hence, impact the electrons in the outer radiation belt. In this study, we use mutual information from information theory to study the change in the statistical dependence between solar wind parameters and inner magnetospheric indices including ultra low frequency (ULF) waves in the Pc5 range and electrons in the outer radiation belt during solar cycle 23 (1998–2008). Unlike Pearson correlation coefficient, mutual information can be used to investigate non-linear statistical dependencies between different parameters. We calculate linear and non-linear correlation coefficients separately for each year during solar cycle 23 and define the non-linearity with the ratio between the linear and non-linear correlation coefficients. We find that the non-linearity between solar wind speed and electron flux index is higher during solar maximum when most of the geomagnetic activity is driven by ICMEs, while the non-linearity decreases during the declining phase, when a larger portion of the geomagnetic activity is driven by HSSs and SIRs. On the other hand, IMF Bz and solar wind electric field Ey = VswBz have smaller non-linearity with the geomagnetic indices during time periods of stronger geomagnetic activity. To investigate further if the change of the ratio of ICMEs and SIRs/HSSs as the driver of geomagnetic activity is the possible cause of the changes in the non-linearity during the solar cycle, we calculate the correlation coefficients separately during ICMEs, HSSs/SIRs and quiet solar wind. We find that non-linearity for solar wind speed and inner magnetospheric electron

lifehacker.com

Lifehacker is the ultimate authority on optimizing every aspect of your life. Do everything better.