Preparations of pure macrophage suspensions may be required in the investigation of cellmediated immune reactions or for the preparation of antimacrophagic serum. Methods for the preparation of macrophage suspensions of high purity from peritoneal exudates are relatively tedious and result in small yields of cells. Bloom and Bennett (1966) and Turk and Polak (1967) describe a technique inwhich ...

We present regularization tools for training small-and-medium as well as large-scale artiicial feedforward neural networks. The determination of the weights leads to very ill-conditioned nonlinear least squares problems and regularization is often suggested to get control over the network complexity, small variance error, and nice optimization problems. The algorithms proposed solve explicitly ...

Financial contagion is modeled as an equilibrium phenomenon in a dynamic setting with incomplete information and multiple banks. The equilibrium probability of bank failure is uniquely determined. We explore how the cross holding of deposits motivated by imperfectly correlated regional liquidity shocks can lead to contagious effects conditional on the failure of a financial institution. We show...

Author Background: Dr. Yair Wiseman teaches and advises MSc and PhD students at Bar-Ilan University, Israel Aircraft Industries, and Holon Institute of Technology. He has an MSc and PhD from Bar-Ilan University, and Albert Einstein is his academic great-great-grandfather (i.e., the advisor of the advisor of the advisor of Dr. Wiseman’s advisor). Dr. Wiseman completed two postdocs: at the School...

In this thesis we conduct a network analysis of bilateral tax treaties. We are given tax data of 108 countries. Companies often send money from country to country via indirect routes, because then the tax that must be paid might be lower. In the thesis we will study the most important of these ‘tax’ routes. Questions that we will answer are, for example: 1. Which countries are the most importan...

This paper reports work done to improve the modeling of complex processes when only small experimental data sets are available. Neural networks are used to capture the nonlinear underlying phenomena contained in the data set and to partly eliminate the burden of having to specify completely the structure of the model. Two different types of neural networks were used for the application of Pulpi...

Languages differ dramatically in how much they require their speakers to mark the timing of events when speaking. In this paper I test the hypothesis that being required to speak differently about future events (what linguists call strongly grammaticalized future-time reference) leads speakers to treat the future as more distant, and to take fewer future-oriented actions. Consistent with this h...