In 2005, Germany introduced a new Amateur Radio Ordinance prohibiting encrypted radio traffic at home. Crypto-bans can be circumvented using steganography. However, present steganographic methods are not eligible because the embedded message will not survive the usual distortions in a radio transmission. Robust as current watermarking methods are, they leave clearly detectable traces and have a...

Wikipedia is often considered as an example of ‘collaborative knowledge’. Researchers have contested the value of Wikipedia content on various accounts. Some have disputed the ability of anonymous amateurs to produce quality information, while others have contested Wikipedia’s claim to accuracy and neutrality. Even if these concerns about Wikipedia as an encyclopaedic genre are relevant, they m...

1. Not planning at all By far the most common planning problem is simply not planning at all, and this sin is easily avoided. A person need not be an expert planner to plan effectively. I’ve seen numerous instances of projects planned by rank amateurs that have run well simply because the people in charge had carefully considered their project’s specific needs. Forced to choose between an exper...

These reflections aim to increase awareness of the contradictions inherent in the definition of sport and its relation to health and education. Taking the doping issue as a point of departure, we seek to open a general debate regarding the impact of the sports performance industry on public health. Illegal doping practices lead to the health insecurity of many professional and aspiring athletes...

The search for a simple broadband, multiband antenna with acceptable SWR over the entire 80/75-meter band continued with the publication of the article by Witt, AI1H, in April 1989 QST. This inspired author Belrose, VE2CV, to reopen his files on the "Windom antenna," or, more properly, the off-center-fed dipole. Particularly since the opening of the 10, 18 and 24-MHz bands, this time-honored, s...

The article presents the results of study properties nervous system, speed simple and complex reactions, short-term visual memory first-person shooter CS: GO multiplayer battle arena DOTA 2. Relevance description individual typological personality traits participants relationships with indicators gaming activity is associated possibility creating psychodiagnostic tools to determine propensity c...

Local history’s Post-war boom in Japan has produced a tremendous volume of publications, hundreds of volumes that provide materials for Japanese historians of all stripes, local sophisticated amateurs and professional university historians alike. As Gary Allinson noted years ago, these materials also provide a rich trove of materials for scholars outside of Japan: the best include not only surv...

The various modes, modulation types and protocols we use partly reflect the different types of information we might wish to transmit, such as data, voice, image or even multimedia communications. Other considerations are the behavior of the radio link including fading, delay, Doppler frequency shift and distortion. We are also limited by regulatory restrictions such as bandwidth and following c...