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SUMMARY:Lent Internal Symposium 2009 - Joshua R. Cook\, Will Smiley\, Olek
 sandr Poplavskyy\, Joseph C. Bonneau\, University of Cambridge
DTSTART:20090301T160000Z
DTEND:20090301T180000Z
UID:TALK18718@talks.cam.ac.uk
CONTACT:14273
DESCRIPTION:Joshua R. Cook\, Why Fat Matters: How Adipose Tissue Maintains
  Metabolic Health\n\nAbstract:\nAdipose (fat) tissue plays a key role in m
 aintaining a healthy metabolic set point in the body\, largely in two ways
 . First\, adipose tissue acts as a safe storage depot for fats circulating
  in the body\, which otherwise can wreak havoc on other tissues. Second\, 
 adipose tissue secretes signalling molecules called adipokines that modula
 te a range of metabolic parameters both in the brain (such as food intake 
 and energy burning) and in the periphery (such as insulin sensitivity). Dy
 sfunction of adipose tissue\, therefore\, sets the stage for the developme
 nt of type 2 diabetes\, atherosclerosis\, and a host of other health probl
 ems. As a result\, understanding the biology of fat is a key step in comba
 ting the mounting global metabolic syndrome pandemic.\n\n\nWill Smiley\, C
 ontact through Captivity: Russian Prisoners and Ottoman Reforms\n\nMy pape
 r deals with Russian prisoners of war in the hands of the Ottoman Empire i
 n the late eighteenth century\, and their relationship to reforms undertak
 en by the Ottomans in that period. I suggest that prisoners' changing trea
 tment can be seen as a barometer of the "Europeanization" of Ottoman forei
 gn policy\, even as prisoners themselves took part in these reforms. Thus 
 prisoners offer a unique way to examine Ottoman reforms\, focusing on the 
 "little people" who were affected by\, but also helped shape\, the reform 
 program emerging from the governing elite of "modernizing" nation-state.\n
 \nOleksandr Poplavskyy\, Walking through the quantum world of electrons in
  two dimensions.\n\nQuantum electron systems in two space dimensions and a
 t low temperatures provide a fertile source of bizarre quantum phases of m
 atter\, which completely defy our common-sense expectations based on the c
 lassical laws of physics\, and which are often the consequence of strong C
 oulomb interactions between electrons. In such systems and in strong magne
 tic fields\, one observes a\nremarkable phenomenon called the fractional q
 uantum Hall effect. I will speak about the different\nquantum phases arisi
 ng in the quantum Hall regime such as the incompressible quantum liquid wi
 th fractionally charged excitations\, and the Wigner crystal of electrons.
 \n\nJoseph C. Bonneau\, Privacy implications of Social Networks\n\nSocial 
 networks are here to stay\, despite repeated security incidents and a poor
  privacy model. Ten years ago\, the same was said of the internet\, yet we
 've muddled along without catastrophe. However\, social networks are funda
 mentally different. The stakes are higher and the incentives are more poor
 ly aligned. This talk will examine the threat environment of social networ
 ks\, the market failures which prevent a serious effort to address privacy
 \, and the psychological problems which make it difficult for cryptographe
 rs to improve the situation.\n
LOCATION:Gates Common Room\, Cambridge
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