Students from the Summer Modern Greek language program in Thessaloniki gathered during the tour of the Heptapyrgion and other parts of the city of Thessaloniki. The Heptapyrgion, also popularly known by its Ottoman Turkish name Yedi Kule, is a Byzantine and Ottoman-era fortress situated on the north-eastern corner of the acropolis of Thessalonik...
Sunset from the Xenia-Helios Hotel, site of the 29th International Summer School for Greek Language, History, and Culture. The hotel sits in Peraia, a suburb of Thessaloniki and at the time was a training hotel for students in the hospitality industry.
View from the Temple of Olympian Zeus looking towards the northwest with the Arch of Hadrian in the background far right and the Acropolis in the distance.
The Choragic Monument of Lysicrates located near the Acropolis in Athens was erected by the choregos Lysicrates, a wealthy patron of musical performances in the Theater of Dionysus to commemorate the award of first prize in 335/334 BCE, to one of the performances he had sponsored. The choregos was the sponsor who paid for and supervised the trai...
View of the Philopappos Monument, an ancient Greek mausoleum and monument dedicated to Gaius Julius Antiochus Epiphanes Philopappos or Philopappus, a prince from the Kingdom of Commagene. It is located on Mouseion Hill in Athens, Greece, southwest of the Acropolis.
The Propylaea of the University of Athens, part of the "Trilogy" of buildings designed by Theofil Hansen, serves as the ceremony hall and rectory. The other buildings by Hansen are the National Academy and National Library.
View from the photographer's room at the Xenia-Ilios Hotel, site of the 29th International Summer School for Greek Language, History, and Culture organized by the Institute for Balkan Studies in Thessaloniki. The hotel sits in Peraia, a suburb of Thessaloniki and at the time was a training hotel for students in the hospitality industry. The view...
View from the photographer's room at the Xenia-Helios Hotel, site of the 29th International Summer School for Greek Language, History, and Culture organized by the Institute for Balkan Studies in Thessaloniki. The hotel sits in Peraia, a suburb of Thessaloniki and at the time was a training hotel for students in the hospitality industry. The vie...
View of the seaside front of the Xenia-Helios Hotel, site of the 29th International Summer School for Greek Language, History, and Culture organized by the Institute for Balkan Studies in Thessaloniki. The hotel sits in Peraia, a suburb of Thessaloniki and at the time was a training hotel for students in the hospitality industry. The view is tow...
View of a classroom at the Xenia-Helios Hotel, site of the 29th International Summer School for Greek Language, History, and Culture organized by the Institute for Balkan Studies in Thessaloniki. The hotel sits in Peraia, a suburb of Thessaloniki and at the time was a training hotel for students in the hospitality industry.
View of the photographer's (student's) room at the Xenia-Helios Hotel, site of the 29th International Summer School for Greek Language, History, and Culture. The hotel sits in Peraia, a suburb of Thessaloniki and at the time was a training hotel for students in the hospitality industry.
View of the Xenia-Helios Hotel, site of the 29th International Summer School for Greek Language, History, and Culture organized by the Institute for Balkan Studies in Thessaloniki. The hotel sits in Peraia, a suburb of Thessaloniki and at the time was a training hotel for students in the hospitality industry.
View of the reception area at the Xenia-Helios Hotel, site of the 29th International Summer School for Greek Language, History, and Culture organized by the Institute for Balkan Studies in Thessaloniki. The hotel sits in Peraia, a suburb of Thessaloniki and at the time was a training hotel for students in the hospitality industry.
View of the beach and Aegean Sea from the Xenia-Helios Hotel, site of the 29th International Summer School for Greek Language, History, and Culture organized by the Institute for Balkan Studies in Thessaloniki. The hotel sits in Peraia, a suburb of Thessaloniki and at the time was a training hotel for students in the hospitality industry. The vi...
In this talk, we consider the efficient simulation of asset prices for general stochastic localvolatility models, which include the Heston stochastic volatility model and the stochastic alphabeta rho (SABR) model as special cases. Our simulation algorithm is constructed based on a novelapplication of a continuous-time Markov chain (CTMC) approxi...
Creator:
Nguyen, Duy (Marist College)
Created:
2018-06-15
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
In this talk, we study a corporate bond-pricing model with credit rating migration and a stochastic interest rate. The volatility of bond price in the model strongly depends on potential credit rating migration and stochastic change of the interest rate. This new model improves the previous existing models in which the interest rate is considere...
Creator:
Yin, Hong-Ming (Washington State University)
Created:
2018-06-15
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
In this talk we present some results on optimal asset allocation with stochastic interest rates in regime-switching models. A class of stochastic optimal control problems with Markovian regime-switching is formulated for which a verification theorem is provided. The theory is applied to solve two portfolio optimization problems (a portfolio of s...
Creator:
Liu, Ruihua (University of Dayton)
Created:
2018-06-15
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
The main objective of the presented work is to study no-arbitrage pricing of financial derivatives in the presence of funding costs, the counterparty credit risk and market frictions affecting the trading mechanism, such as collateralization and capital requirements. To achieve our goals, we extend in several respects the nonlinear pricing appro...
Creator:
Bielecki, Tom (Illinois Institute of Technology)
Created:
2018-06-14
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Theoretically equilibrium possibilities may be expanded by reducing the number of critical states. Furthermore, nonlinear valuation procedures may be used to assist the attainment of an expanded equilibrium with fewer securities than even the number of critical states. Practically, risk is an exposure to change in value or the variation in value...
Creator:
Madan, Dilip (University of Maryland)
Created:
2018-06-14
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Motivated by the Guaranteed Minimum Death Benefits in various deferred annuities, we investigate the calculation ofthe expected discounted value of a payment at the time of death. The payment depends on the price of a stock at thattime and possibly also on the history of the stock price. If the payment turns out to be the payoff of an option,we ...
Creator:
Yang, Hailiang (University of Hong Kong)
Created:
2018-06-14
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
We consider a tournament game in which each player is rewarded based on her rank in terms of the time of reaching a goal. We prove existence, uniqueness and stability of the game with in_x000C_finitely many players, existence of an approximate equilibrium with _x000C_finitely many players, and _x000C_find an explicit characterization when player...
Creator:
Cvitanic, Jaksa (California Institute of Technology)
Created:
2018-06-13
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
This talk is concerned with multi-asset mean-variance portfolio selection problem under model uncertainty. We develop a continuous time framework for taking into account ambiguity aversion about both expected rate of return and correlation matrix of stocks, and for studying the effects on portfolio diversification. We prove a separation principl...
Creator:
Pham, Huyen (Universite de Paris VII (Denis Diderot))
Created:
2018-06-13
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
We consider the problem of stopping a diffusion process with a payoff functional that renders the problem time inconsistent. We study stopping decisions of naive agents who reoptimize continuously in time, as well as equilibrium strategies of sophisticated agents who anticipate but lack control over their future selves' behaviors. When the state...
Creator:
Zhou, Xunyu (Columbia University)
Created:
2018-06-13
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Master equation is a powerful tool for studying McKean-Vlasov dynamics where the distribution of the state process enters the coefficients directly, with particular applications including mean field games and stochastic control problems with partial information. In this talk we propose an intrinsic notion of viscosity solution for parabolic mast...
Creator:
Zhang, Jianfeng (University of Southern California)
Created:
2018-06-13
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Formally, exit problem with an alpha-stable process is associated with an elliptic PDE with Dirichlet boundary and fractional Laplacian operator. We will investigate sufficient conditions of the exit problem value to be the strong, respectively generalized viscosity solution of its associated Dirichlet problem. Solvability of parabolic PDE can a...
Creator:
Song, Qingshuo (City University of Hong Kong)
Created:
2018-06-12
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
We consider the problem of optimal control of a mean-field stochastic differential equation (SDE) under model uncertainty. The model uncertainty is represented by ambiguity about the law L(X(t)) of the state X(t) at time t. For example, it could be the law L_P(X(t)) of X(t) with respect to the given, underlying probability measure P. This is the...
Creator:
Oksendal, Bernt (University of Oslo)
Created:
2018-06-12
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
This paper studies the optimal extraction and taxation of nonrenewable natural resources. It is well known that prices of strategic resources such as oil, natural gas, uranium, copper,..., etc, fluctuate randomly following global and seasonal macroeconomic parameters, those prices are modeled using Markov switching L\'evy processes. We formulate...
Creator:
Pemy, Moustapha (Towson State University)
Created:
2018-06-12
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
In this talk we present some recent new findings regarding optimal execution problems in an order-driven market where the limit order book (LOB) follows the so-called "equilibrium" model. More precisely, we argue that the "equilibrium utility function", which determines both the "shape" and the "frontier" of the LOB endogenously, is in fact the ...
Creator:
Ma, Jin (University of Southern California)
Created:
2018-06-11
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
In the real world, the historical performance of a stock may have impacts on its dynamics and this suggests us to consider models with delays. We consider some portfolio optimization problem of Merton’s type in which the risky asset is described by some stochastic delay models. By virtue of the dynamic programming principle, we derive the Hami...
Creator:
Pang, Tao (North Carolina State University)
Created:
2018-06-11
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Stock loans involve two parties: a borrower and a lender. The borrower owns one share of stock and obtains a loan from the lender using the share of stock as collateral. At maturity, the borrower must choose between 1) repaying the lender the principal plus interest to regain the stock and 2) defaulting on the loan and surrendering the stock. Mo...
Creator:
Prager, David (Anderson University)
Created:
2018-06-11
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Suppose you have one unit of stock, currently worth 1, which you must sell before time $T$. The Optional Sampling Theorem tells us that whatever stopping time we choose to sell, the expected discounted value we get when we sell will be 1. Suppose however that we are able to see $a$ units of time into the future, and base our stopping rule on tha...
Creator:
Ernst, Philip (Rice University)
Created:
2018-06-11
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
One page from the Journal of Kenneth Dexter Miller that he wrote during 1917-1918 while serving as YMCA secretary with the Czechoslovak Legion in Russia.
Creator:
Miller, Kenneth Dexter, 1887-
Created:
2018-06-06
Contributed By:
University of Minnesota Libraries, Immigration History Research Center Archives.
Meloney Len and her family escaped the terror of the Khmer Rouge regime in Cambodia by fleeing to Thailand and moving to other countries in Asia. After a church sponsored them, they were able to move to the United States and Meloney was able to start a normal life going to school, working, and eventually getting married and having children.
Creator:
R, Kaikea
Created:
2018-06-06
Contributed By:
University of Minnesota, Immigration History Research Center
Systemic chemotherapy is the main anticancer treatment for most kinds of clinically diagnosed solid tumors. However, the efficacy of anticancer drugs is often lower than expected or desired. Moreover, after a good initial reaction, the tumors often become non-responsive and resistant to the drugs. These impediments in anticancer therapy can be a...
Creator:
Rejniak, Katarzyna (Moffitt Cancer Center)
Created:
2018-05-31
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Indirect effects, both density- and trait-mediated, have been known to act in tandem with direct effects in the interactions of numerous species. They have been shown to affect populations embedded in competitive and mutualistic networks alike. At the same time, in disease systems, pathogens can harm their hosts in a variety of ways. For this re...
Creator:
Rapti, Zoi (University of Illinois at Urbana-Champaign)
Created:
2018-05-30
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Glioblastoma, also known as glioblastoma multiforme (GBM), is an extremely fast-growing and lethal form of brain cancer. Tumor recurrence in GBM is often attributed to acquired resistance to the standard chemotherapeutic agent temozolomide (TMZ). Promoter methylation of the DNA repair gene MGMT has been associated with sensitivity to TMZ, while ...
Creator:
Storey, Katie (University of Minnesota, Twin Cities)
Created:
2018-05-30
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
One page from the Journal of Kenneth Dexter Miller that he wrote during 1917-1918 while serving as YMCA secretary with the Czechoslovak Legion in Russia.
Creator:
Miller, Kenneth Dexter, 1887-
Created:
2018-05-30
Contributed By:
University of Minnesota Libraries, Immigration History Research Center Archives.
The timing of human sleep is strongly modulated by the 24 h circadian rhythm, and desynchronization of sleep-wake cycles from the circadian rhythm can negatively impact health. We have developed a physiologically-based mathematical model for the neurotransmitter-mediated interactions of sleep-promoting, wake-promoting and circadian rhythm-genera...
Creator:
Booth, Victoria (University of Michigan)
Created:
2018-05-30
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
The heterogeneous nature of cancer observed across different regions of the primary tumor, across metastatic sites, across time, and across patients makes designing efficacious yet tolerable therapies a challenge. Both standard of care and personalized treatment protocols run the risk of not exhibiting a robust anti-tumor response in the face of...
Creator:
Gevertz, Jana (The College of New Jersey)
Created:
2018-05-29
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Mathematical models in systems biology often have many parameters, such as biochemical reaction rates, whose true values are unknown. When the number of parameters is large, it becomes computationally difficult to analyze their effects and to estimate parameter values from experimental data. This is especially challenging when the model is expen...
Creator:
Chou, Ching-Shan (The Ohio State University)
Created:
2018-05-29
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Because sheaves model consistency relationships between local data, they are easily assembled from detailed models of systems. Being topological in nature, sheaves mediate local-to-global inference. By incorporating local geometry from the start, the global "fit" between local data and models can be quantified, which supports robust inferences a...
Creator:
Robinson, Michael (American University)
Created:
2018-05-24
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
We develop a geometric framework, based on the classical theory of fibre bundles, to characterize the cohomological nature of a large class of synchronization-type problems in the context of graph inference and combinatorial optimization. In this type of problems, the pairwise interaction between adjacent vertices in the graph is of a "non-s...
Creator:
Gao, Tingran (University of Chicago)
Created:
2018-05-24
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
We present a distributed computation mechanism of persistent homology using cellular cosheaves. Our construction is an extension of the generalized Mayer-Vietoris principle to filtered spaces obtained via a sequence of spectral sequences. We discuss a general framework in which the distribution scheme can be adapted according to a user-specific ...
Creator:
Rhang, Hee (Iris) Yoon (University of Pennsylvania)
Created:
2018-05-23
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Topological data analysis allows geometric and topological constructions to be imported into the study of data. A central idea of this methodology is to determine features which persist as a single parameter varies across multiple scales. We consider a generalized version of persistence in which multiple parameters can vary simultaneously, inspi...
Creator:
Catanzaro, Michael (University of Florida)
Created:
2018-05-23
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
After a brief review on sheaves in the derived setting and the notion of gamma-sheaves, I will expose the main results of arXiv:1705.00955 and arXiv:1805.00349, a joint work with Masaki Kashiwara. The aim is to better understand persistent homology in higher dimension. For that purpose, one first proves that constructible sheaves on a real finit...
A fundamental question in the study of high-dimensional data is asfollows: Given high-dimensional point cloud samples, how can we inferthe structures of the underlying data?In manifold learning, we assume the data is supported by alow-dimensional space with a manifold structure.However, such an assumption may be too restrictive in practice when ...
Creator:
Wang, Bei (The University of Utah)
Created:
2018-05-22
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
