Probabilistic compositeness tests are of great practical importance in cryptography. Besides prominent tests (like the well-known Miller-Rabin test), there are tests that use Lucas-sequences for testing compositeness. One example is the so-called Frobenius test that has a very low error probability. Using a slight modification of the above mentioned Lucas sequences we present a simple derivatio...

Meteorites, which are remnants of solar system formation, provide a direct glimpse into the dynamics and evolution of a young stellar object (YSO), namely our Sun. Much of our knowledge about the astrophysical context of the birth of the Sun, the chronology of planetary growth from micrometersized dust to terrestrial planets, and the activity of the young Sun comes from the study of extinct rad...

The In s ti tute for the stu dy of Di p l om acy hosted the spring    m eeti n gs of the Sch l e s i n ger Working Group on the topic of Russian forei gn policy tow a rds its nei gh bors in Cen tral Asia and the Ca u c a su s . The po ten tial for furt h er con f l i ct a l ong Ru s s i a’s peri ph ery is re a l . Russia (ex periencing an econ omic upswing and more assertive po l i tical le...

Developmental genetic pathways involved in flower formation in model plants such as Arabidopsis and maize enable us to identify genes, gene families, and gene networks that are involved in the regulation of flower initiation, growth and differentiation. These genes can then function as “candidate genes” and their expression, function, and biochemical interactions can be explored in other lineag...

background: b re a st con s er v i n g surg e ry ( b c s ) f o l l owed b y loc a l rad i ot h e ra p y is the standard t r eatment for e a rly sta g e of breast cancer. margin stat u s may have an important impact on local recurren c e and over a ll s u rvival of patients treated with bcs, but this h a s not b een defined adequately. in this study, we in ve stigated the rela t io n ship betwee...

Tło: Fluralaner (Bravecto®) to nowy ogólnoustrojowy insektycyd i akarycyd zapewniający trwałe działanie bójcze już po jednorazowym podaniu w dawce minimum 25 mg/kg masy ciała. Metodyka: W celu wyznaczenia początku działania bójczego (jedno badanie) oraz określenia szybkości działania bójczego fluralaneru przeciwko pchłom (dwa badania) przeprowadzono z udziałem psów trzy randomizowane badania z ...

C la s s ifi c a tio n o f Te r r e s tr ia l I m a ge s b y G e ne r ic G e o m e tr ic H ie r a r c h ic a l C lus te r A na ly s is Fe a tur e s Gerd B ru n n er a n d H a n s B u rk h a rdt In s titu te fo r Pa ttern R ec o g n itio n a n d Im a g e Pro c es s in g , C o m p u ter S c ien c e D ep a rtm en t, U n ivers ity o f F reib u rg , Geo rg es-K o eh ler-A llee 0 5 2 , 7 9 1 1 0 F re...

Copulas are functions that describe the dependence between two or more random variables. This article provides a brief review of copula theory and two areas of economics in which copulas have played important roles: multivariate modeling and partial identification of parameters that depend on the joint distribution of two random variables with fixed or knownmarginal distributions.We focus on bi...

Advances in our understanding of macromolecular structure come from experimental methods, such as X-ray crystallography, and also computational analysis of the growing number of atomic models obtained from such experiments. The later analyses have made it possible to develop powerful tools for structure prediction and optimization in the absence of experimental data. In recent years, a synergy ...

Many important processes in the cell are mediated by stiff microtubule polymers and the activemotor proteinsmoving on them.This includes the transport of subcellular structures (nuclei, chromosomes, organelles) and the selfassembly and positioning of the mitotic spindle. Little is understood of these processes, but they present fascinating problems in fluid-structure interactions. Microtubules ...