Fri 4/21/17 10 am  Shapiro Campus Center, Multipurpose Room 
Thesis Seminar (Graduate Program in Neuroscience) 
Anne Joseph (Turrigiano Lab) 
All for one but not one for all: Excitatory synaptic scaling and intrinsic excitability are coregulated by CaMKIV, while inhibitory synaptic scaling is under independent control 

Fri 4/21/17 11:15 am  Rosenstiel 118 
BiochemistryBiophysics Friday Lunchtime Pizza Talks 
Senior Students (Brandeis University) 
Senior Honors Talks 

Fri 4/21/17 12:30 pm  Gerstenzang 123 
Molecular and Cell Biology & Neuroscience Student Seminars 
NO PIZZA TALKS scheduled 

Mon 4/24/17 11 am  Volen 201 
Computational Neuroscience Journal Club 
Steve Ramirez (Harvard (Center for Brain Science)) 
Artificially activating memories to alleviate psychiatric diseaselike states 
Pizza to follow 
Hosted by Andrea Stacy 

Mon 4/24/17 12 noon  Rosenstiel 118 
Molecular Genetics Journal Club 
Fred Winston (Harvard Medical School) 
Factors that control transcriptional accuracy and chromatin integrity 
Hosted by Jim Haber 

Mon 4/24/17 1 pm  Goldsmith 226 
Dynamics and Number Theory 
Shucheng Yu (Boston College) 
Shrinking target problems for flows on homogeneous spaces 
The shrinking target problem for diagonalizable flows on a homogeneous space is well understood due to the work of Kleinbock and Margulis. The main ingredients for the proof are a quantitative BorelCantelli lemma and the exponential decay of matrix coefficients for digaonalizable flows. Much less is known for unipotent flows. In this talk, I will discuss a much weaker decay condition which ensures the quantitative BorelCantelli lemma and apply this result to unipotent flows. This is joint work with Dubi Kelmer. 
Hosted by Prof. Dmitry Kleinbock 

Mon 4/24/17 4 pm  Gerstenzang 121 
Chemistry Department Colloquium 
George Makhatadze (Rennsselaer Polytech) 
ManMade versus NaturallyEvolved Protein Folding Landscapes 
Hosted by Pochapsky/Ringe 

Tue 4/25/17 12:30 pm  Gerstenzang 121 
M.R. Bauer Colloquium Series 
Ravi Allada (Northwestern University) 
Circadian Clocks: From Fruit Flies to Fly Balls 
Hosted by Michael Rosbash and Leslie Griffith 

Tue 4/25/17 1 pm  Goldsmith 226 
Combinatorics Seminar 
Cristobal Lemus (Brandeis) 
Enumeration of paths via occurrences of distinguished strings and a proof of Touchardâ€™s identity 
We will count paths by occurrences of several strings of steps in Dyck paths. There is an extensive literature on lattice path enumeration where authors count the occurrence of a particular string in Dyck paths, sometimes also keeping track of whether such a string occurs at even or odd height. This has been done, for example, by Deutsch in "Dyck path enumeration, Discrete Math. 204 (1999), no. 13, 167202." There "peaks", "valleys", and "doublerises" are studied and as a result give Narayana numbers. Strings of length 3 are also considered by Deutsch. The authors of "A. Sapounakis, I. Tasoulas, and P. Tsikouras, Counting strings in Dyck paths, Discrete Mathematics 307 (2007), no. 23, 29092924." count paths by occurrences of any given string of length 4 and by semilength. In this talk we count three types of substrings simultaneously which together also count paths by semilength and number of peaks. Special cases of this enumeration give several wellknown families of numbers such as Catalan, Motzkin, Narayana, and SchrĂ¶der numbers. We will also give a short proof of Touchard's identity via colored Motzkin paths. 
Hosted by Prof. Olivier Bernardi and Yan Zhuang 

Tue 4/25/17 2 pm  Goldsmith 317 
Topology Seminar 
Christopher O'Donnell (Tufts University) 
Decomposing Cube Complexes 
It is known that if a group acts nicely on a product of CAT(0) cube complexes, then the group must virtually decompose as a product of groups. In this talk, we will discuss when the opposite is true: given a nice action of a product of groups on a CAT(0) cube complex, when can we say that the cube complex decomposes as a product of cube complexes? 
Hosted by Prof. Ruth Charney 

Tue 4/25/17 4 pm  Abelson 131 
Physics Department Colloquium 
James Battat (Wellesley) 
Probing the Dark Universe 
Refreshments at 3:30pm, outside Abelson 131 
Hosted by Prof. Gabriella Sciolla 

Tue 4/25/17 4 pm  Gerstenzang 121 
Special Seminar 
Richard Benton (University of Lausanne) 
Evolution of olfactory receptors and circuits 
Hosted by Paul Garrity 

Wed 4/26/17 12 noon  Rosenstiel 118 
Neurobiology Journal Club 
CANCELLED 

Wed 4/26/17 3:30 pm  Gerstenzang 121 
Chemistry Department Colloquium 
Mark Gandelman (TechnionIsrael Institute of Technology) 
New Bonding and Reactivity: Chemistry of NCations and NRadicals 
Hosted by Klaus SchmidtRohr 

Thu 4/27/17 12 noon  Rosenstiel 118 
Psychology Department Brown Bag 
Suman Guha (Learning, Memory & Decision Making) 
TBA 
Sonja Krstic (Knight Lab) 
TBA 

Thu 4/27/17 2 pm  Goldsmith 317 
Everytopic Seminar 
Olivier Bernardi (Brandeis) 
A bijective approach to percolation on random lattices, and maybe more 
I will talk about planar maps and percolation. I will show that planar triangulations endowed with a percolation configuration can be bijectively encoded by certain lattice paths in the quarter plane. I will explain what can be done using this bijection. Time permitting I will also talk about some big conjectures in 2D random geometries (about the relation between the Gaussian free field, SLE curves, and Brownian surfaces), and how the bijection may be instrumental in proving them. This is a joint work with Nina Holden and Xin Sun. 
Hosted by Prof. Arunima Ray 

Fri 4/28/17 11:15 am  Rosenstiel 118 
BiochemistryBiophysics Friday Lunchtime Pizza Talks (Cosponsored by the Quantitative Biology Program) 
Kiyoshi Mizuuchi (NIH) 
Intracellular longrange communication in bacterial plasmid segregation and septum positioning 
Hosted by Jeff Gelles (Biochemistry) 

Fri 4/28/17 12:30 pm  Gerstenzang 123 
Molecular and Cell Biology & Neuroscience Student Seminars 
NO PIZZA TALKS scheduled 

Mon 5/1/17 11 am  Abelson 307 
String Theory Seminar 
Nishant Agrawal (UMass, Lowell) 
Hosted by Albion Lawrence 

Mon 5/1/17 12 noon  Rosenstiel 118 
Molecular Genetics Journal Club 
Chris De Graffenried (Brown University) 
Cytoskeletal morphogenesis in Trypanosoma brucei 
Hosted by Avi Rodal 

Mon 5/1/17 4 pm  Gerstenzang 121 
Chemistry Department Colloquium 
Seth Cohen (University of California, San Diego) 
MOFs: From Motors to Materials 
Hosted by Christine Thomas 

Tue 5/2/17 3:30 pm  Gerstenzang 122 
Chemistry Department Colloquium 
Mingji Dai (Purdue) 
Building Structural Complexity via Tandem Catalytic Transformations: Total Synthesis of Bioactive Macrolides and Terpenes 
Hosted by Isaac Krauss 

Tue 5/2/17 4 pm  Abelson 131 
Physics Department Colloquium 
Carl Haber (Lawrence Berkeley National Lab) 
The Restoration of Early Sound Recordings using Optical Metrology and Image Analysis 
Refreshments at 3:30pm, outside Abelson 131 
Hosted by Gabriella Sciolla 

Wed 5/3/17 12 noon  Rosenstiel 118 
Neurobiology Journal Club 
David Hampton (Marder Lab ) 
Regulation of Thalamic and Cortical Network Synchrony by Scn8a 
Ref: Makinson, Christopher D., et al. "Regulation of Thalamic and Cortical Network Synchrony by Scn8a." Neuron 93.5 (2017): 11651179. 
Steven J Del Signore (Rodal Lab) 
C. elegans neurons jettison protein aggregates and mitochondria under neurotoxic stress 
Ref: Nature. 2017 Feb 16;542(7641):367371 "C. elegans neurons jettison protein aggregates and mitochondria under neurotoxic stress." Melentijevic I et al. 

Thu 5/4/17 11:15 am  Rosenstiel 118 
BiochemistryBiophysics Friday Lunchtime Pizza Talks 
FirstYear BCBP PhD Students 
FirstYear Biochemistry & Biophysics Doctoral Student Rotation Talks 
Rotation Talks will run from 11:15am  12:30pm. 

Thu 5/4/17 2 pm  Gerstenzang 124 
Thesis Seminar (Graduate Program in Molecular and Cell Biology) 
Katelyn Daman (Paradis Lab) 
The role of Rem2 signaling in the regulation of neuronal morphology and synaptic connectivity 

Thu 5/4/17 4:30 pm  Goldsmith 317 
Mathematics Joint Colloquium 
Ivan Mirkovic (UMass Amherst) 
Generalized loop Grassmannians 
Loop Grassmannians appear in the geometric Langlands program as a geometrization of Hecke operators in number theory. They are also "the simplest'' noncommutative cohomology objects in algebraic geometry. We will reconstruct the loop Grassmannian of a reductive group in terms of an elementary mechanism of ``local spaces''. This is just another mathematical model of collision of particles, a version of the BeilinsonDrinfeld notion of factorization spaces or the FeiginLoktev fusion of representations etc. This construction actually provides a larger class of spaces generalizing the known loop Grassmannians. 
Refreshments at 4pm in Goldsmith 100 
Hosted by Professor An Huang 

Fri 5/5/17 12:30 pm  Gerstenzang 123 
Molecular and Cell Biology & Neuroscience Student Seminars 
NO PIZZA TALKS  Finals 

Fri 5/5/17 2 pm  Rosenstiel 118 
Thesis Seminar (Graduate Program in Neuroscience) 
Adriane Otopalik (Marder Lab) 
Mapping neuronal morphology to physiology in a rhythmic motor circuit 

Tue 5/9/17 12:30 pm  Gerstenzang 121 
Joint Biology/Neuroscience Colloquium 
Orie Shafer (University of Michigan) 
Temperature and Time: Thermal Control of Circadian Sleep rhythms in Drosophila 
Hosted by Leslie Grffith 

Thu 5/11/17 4 pm  Abelson 229 
MRSEC Seminar 
Hyunmin Yi (Tufts) 
Pizza from 5:005:30 
Hosted by Baptiste Blanc 

Fri 5/12/17 12:30 pm  Gerstenzang 123 
Molecular and Cell Biology & Neuroscience Student Seminars 
NO PIZZA TALKS  Finals 

Mon 5/15/17 9 am  TBA 
Berko Symposium (Graduate and Undegraduate Student Research Symposium) 
Berko Symposium 
TBA 
Hosted by Professor John Wardle 
