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## March 13, 2017

#### Monday, March 13, 2017

Thesis Defense Seminar
9:30 AM - 10:30 AM

Bloomberg School of Public Health

Cost Effectiveness and Scalability of an mHealth Intervention to Improve Pregnancy Surveillance and Care Seeking in Rural Bangladesh Youngi Jo, PhD Candidate Department of International Health
Thesis Defense Seminar
10:30 AM - 11:30 AM

Bloomberg School of Public Health

The Evolution of Emergency Medicine as a Medical Specialty in India: A Policy Analysis Veena Sriram, PhD Candidate Department of International Health
Seminars in Research in Biochemistry and Molecular Biology
12:00 PM - 1:00 PM

Bloomberg School of Public Health

Seminars in Research in Biochemistry and Molecular Biology

Hippo/YAP Signaling in somatic stem cells and cancer

Fernando Camargo, PhD
Department of Stem Cell and Regenerative Biology, Harvard University
Biostatistics Help: Faculty, Staff, Pre and Post Doc Walk-In Clinic
1:30 PM - 2:30 PM

Biostatistics consulting is available to all Johns Hopkins University faculty, staff, pre and post docs conducting clinical and translational research. 1:30 – 2:30 PM Wolfe Street Building Room: E3142
Thesis Defense Seminar
2:00 PM - 3:00 PM

Bloomberg School of Public Health

Neighborhood Social and Economic Change, Food Environment Changes and Diabetes Incidence in Madrid (Spain): 2005-2015 Usama Bilal, PhD Candidate Department of Epidemiology
Chengbo Wang "Long time existence for semilinear wave equations…"
4:00 PM - 5:00 PM

Homewood

Speaker: Chengbo Wang, (Zhejiang U) Title: Long time existence for semilinear wave equations on asymptotically flat space-times Abstract: In this talk, we will talk about the long time existence of solutions to semilinear wave equations of the form $(\partial_t^2-\Delta) u=|u|^p$, for small data with sufficient regularity and decay, on a large class of $(1+n)$-dimensional Lorentzian nonstationary asymptotically flat backgrounds $(M, g)$. Under the assumption that uniform energy bounds and a weak form of local energy estimates hold forward in time, we obtain the sharp lower bounds of the lifespan for three dimensional subcritical and four dimensional critical cases. For the most delicate three dimensional critical case ($p=p_c$), we obtain the existence result up to $\exp(c \epsilon^{-2(p-1)})$, for many space-times including the nontrapping exterior domain, nontrapping asymptotically Euclidean space and Schwarzschild black hole space-time.
Bogdan Gheorghe "Nilpotence and Perdiodicity in Motivic Homotopy Theory"
4:30 PM - 5:30 PM

Homewood

Speaker: Bogdan Gheorghe,Wayne State University Abstract: Classically, it is proven by Devinatz-Hopkins-Smith that the complex cobordism spectrum MU detects nilpotence. Equivalently, one can use the whole family of Morava K-theories K(n) as their wedge sum sits in the same Bousfield class as MU. In the motivic setting one has analogous spectra, the algebraic cobordism spectrum is denoted by MGL and the motivic Morava K-theories by K(n). These spectra fail to detect nilpotence, for example because they do not see the periodic Hopf map eta. In this talk we will construct a motivic field spectrum K(η) that does detect eta, as well as discover a whole new infinite family of motivic periodicities denotes by wn. A central tool that we will explore is a motivic 2-cell complex known by the name of the cofiber of tau.

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