NASA panel weighs asteroid danger

Primordial black holes and asteroid danger

Probability for a primordial black hole to invade the Kuiper belt was calculated. We showed that primordial black holes of certain masses can significantly change asteroids’ orbits. These events may result in disasters, local for our solar system and global for the Earth (like the Tunguska meteorite). We also estimated how often such events occur.

Asteroid Generated Tsunami: Summary of NASA/NOAA Workshop

Proteomics: The Nucleolus Weighs In

Numerous studies have indicated that the nucleolus is involved in a variety of cellular processes besides its well-known function in ribosome biosynthesis. A recent study describing the nucleolar proteome opens the way to new avenues of research on this important nuclear suborganelle.

Bone Weighs in on Obesity

Obesity, insulin resistance, and diabetes are related disorders of energy metabolism for which therapies are suboptimal. In this issue of Cell, Lee et al. (2007) demonstrate in mice that bone regulates the insulin/glucose axis and energy metabolism, providing a new framework for approaching common disorders of bioenergetics.

Solving LPs/SDPs via Multiplicative Weighs

From the previous lecture, we have proved the following lemma. Lemma 1. If the cost vector c t ∈ [−ρ, ρ] n , and T ≥ 4ρ 2 ln n 2 , then average loss 1 T T t=1 p t c t ≤ 1 T T t=1 c t (i) + , ∀i ∈ [n] In this lecture, we are going to see the application of multi-weight algorithm for solving LPs and SDPs. For illustration purpose, we will be working on an LP example (the LP relaxation for set cov...