We discuss some models of neutrino masses and mixings in the context of fermion masses in Grand Unified Theories. Talk given at the 6th International Workshop on Topics in Astroparticle and Underground Physics (TAUP 99) 6–10 September 1999, Paris, France

This paper discusses the elements of socialist and post-socialist (un)employment and informal economy. A growing economic crisis and a reduced participation in the formal labor market in the newly-formed Croatian state in the early 1990s brought about an increase in unemployment and gave rise to informal economy. However, informal economy had been widespread even before, in the late socialist p...

There are six landmark architectures in the Kakioka Magnetic Observatory. The characteristics of these buildings are as follows:(1) The variation building is a semi-underground granite building that has two advantages: one is stability at room temperature in the basement, and the other is low humidity in the room above ground.(2) The thick walls of the magnetic laboratory, the new variation bui...

Abstrac -This paper presents comprehensive experimental results obtained from narrowband and wideband radio channel measurements in an underground mine with narrow veins at 2.4 GHz. From CW measurement data, large-scale distance-power curves and path-loss exponents of the environment are determined. Other relevant parameters such as, mean excess delay, maximum excess delay and rms delay spread ...

A high-statistics measurement of the neutrinos from a galactic core-collapse supernova is extremely important for understanding the explosion mechanism, and studying the intrinsic properties of neutrinos themselves. In this paper, we explore the possibility to constrain the absolute scale of neutrino masses mν via the detection of galactic supernova neutrinos at the Jiangmen Underground Neutrin...

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Pulse radar systems, known as subsurface interface radars, have been widely used to locate underground objects. Three-dimensional towershaped antennas were developed to replace conventional plane antennas and accurately detect the location and depth of underground objects like gas pipes, water pipes and transmission cables. The newly developed radar system using these tower-shaped antennas is c...

Genetic exchange by recombination, or reassortment of genomic segments, has been shown to be an important process in RNA virus evolution, resulting often in important phenotypic changes affecting host range and virulence. However, data from numerous systems indicate that reassortant or recombinant genotypes could be selected against in virus populations and suggest that there is coadaptation am...

DDoS DDoS is distributed denial of service, or an attack that focuses on using the power of a large number of computers to deny users access to a particular service. This attack is powerful and can often bring down entire websites by hitting them with a large amount of traffic. It is difficult to defend against when the attacker is using a botnet because the machines are distributed across the ...