نتایج جستجو برای: 100 km

تعداد نتایج: 469549  

Futures studies is a value knowledge and has a two-way communication with the worldview, ideology and culture of nations. Humanities is one of the factors that influence the field of futures studies. Hence the human sciences itself could be the subject of future studies. In this study, we have tried to discuss the role of future studies in knowledge management in the field of humanities. Theref...

Journal: :Optics express 2008
Qiang Zhang Hiroki Takesue Sae Woo Nam Carsten Langrock Xiuping Xie Burm Baek M M Fejer Yoshihisa Yamamoto

In this letter, we report an experimental realization of distributing entangled photon pairs over 100 km of dispersion-shifted fiber. In the experiment, we used a periodically poled lithium niobate waveguide to generate the time-energy entanglement and superconducting single-photon detectors to detect the photon pairs after 100 km. We also demonstrate that the distributed photon pairs can still...

Journal: :Journal of sports science & medicine 2004
Mike I Lambert Jonathan P Dugas Mark C Kirkman Gaonyadiwe G Mokone Miriam R Waldeck

The purpose of this study was to determine if runners who completed a 100 km ultramarathon race in the fastest times changed their running speeds differently compared to those runners who ran an overall slower race. Times were taken from the race results of the 1995 100 km IAU World Challenge in Winschoten, Netherlands. Race times and 10 km split times were analyzed. Runners (n = 67) were divid...

2015

There are a number of errors in Table 1. Please see the corrected Table 1 here. The publisher apologizes for these errors. open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

2007
S. BLAZKOVA

One of the scale problems in hydrology is to relate nonlinearity in basin response to size and other factors. On the Sputka basin (103.4 km), three groups of unit hydrographs were identified, each group having a common shape parameter, TV, of the Nash model and each, therefore, representing one dimensionless response. The existence of the three dimensionless responses can be explained in the fi...

Journal: :Optics express 2006
Eleni Diamanti Hiroki Takesue Carsten Langrock M M Fejer Yoshihisa Yamamoto

We present a quantum key distribution experiment in which keys that were secure against all individual eavesdropping attacks allowed by quantum mechanics were distributed over 100 km of optical fiber. We implemented the differential phase shift quantum key distribution protocol and used low timing jitter 1.55 microm single-photon detectors based on frequency up-conversion in periodically poled ...

2008
Marco Delbo Paolo Tanga

Recent works have shown that the thermal inertia of km-sized near-Earth asteroids (NEAs) is more than two orders of magnitude higher than that of main belt asteroids (MBAs) with sizes (diameters) between 200 and 1,000 km. This confirms the idea that large MBAs, over hundreds millions of years, have developed a fine and thick thermally insulating regolith layer, responsible for the low values of...

Journal: :Optics express 2007
Hannes Hübel Michael R Vanner Thomas Lederer Bibiane Blauensteiner Thomas Lorünser Andreas Poppe Anton Zeilinger

We demonstrate non-degenerate down-conversion at 810 and 1550 nm for long-distance fiber based quantum communication using polarization entangled photon pairs. Measurements of the two-photon visibility, without dark count subtraction, have shown that the quantum correlations (raw visibility 89%) allow secure quantum cryptography after 100 km of non-zero dispersion shifted fiber using commercial...

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