A coupled KdV system with a free parameter proposed by Nutku and Og̃uz is considered. It is shown that the system passes the WTC’s Painlevé test for arbitrary value of the parameter. A further analysis yields that the parameter can be scaled away and the system can be decoupled. Soliton or integrable equations are those systems which have rich structures, such as infinite number of conservation ...

Let A = (aj,k)j,k≥1 be a non-negative matrix. In this paper, we characterize those A for which ‖A‖E,F are determined by their actions on decreasing sequences, where E and F are suitable normed Riesz spaces of sequences. In particular, our results can apply to the following spaces: lp, d(w, p), and lp(w). The results established here generalize the corresponding ones given by Bennett in Quart. J...

Financial data usually show irregular fluctuations and some trends. We investigate whether there are correlation structures in short-term variabilities (irregular fluctuations) among financial data from the viewpoint of deterministic dynamical systems. Our method is based on the small-shuffle surrogate method. The data we use are daily closing price of Standard & Poor’s 500 and the volume, and ...

In this paper an endogeneous model for the dynamics of the bid-ask spread is derived in the setting of equilibrium ...nancial markets as described by Platen and Rebolledo (1996). An intermediary is hereby added to the original model. The market of Platen and Rebolledo is split into two di¤erent markets: one in which the intermediary is the demand side facing the supply of economic agents, with ...

Based on the 1991-1995 war experience of peoples of Croatia and Bosnia and Herzegovina, I made twelve proposals regarding the following aspects of health, humanitarian work, and human rights: 1. Broadening of the WHO definition of health by including spiritual well-being (absence of hatred) in it, 2. Inclusion of the term genocide into the Index Medicus (MeSH), 3. Establishment of concepts of p...

As health professionals in the United States consider how to focus health care and coverage to ensure better, more equitable patient and population health outcomes, the experience of Cuba's National Health System over the last 5 decades may provide useful insights. Although mutual awareness has been limited by long-term political hostilities between the United States and Cuban governments, the ...

BACKGROUND In the United States, the social myth that abortion clinics are unsafe, lonely places is pervasive. Little research has investigated the extent to which women's negative experiences of clinic interactions and processes confirm or contest this myth. STUDY DESIGN Semistructured interviews with 41 women who received an abortion at a clinic were conducted and analyzed using qualitative...

Asymmetries in the abilities of contestants that engage in a protracted competition appear to be more common than symmetric competitions. Why doesn’t the weaker player concede immediately? This paper introduces a model based on the idea that a “war” can only be won by winning a series of battles. There are two kinds of stationary equilibria, one with fighting to completion, the other with a ces...

Introduction. All the gunshot wounds are of high-energy. Gunshot and blast injuries, in most cases, multiple, varying depth area wound surface. From first day full-scale invasion Russian troops (February 24, 2022), many victims hostilities on right bank Dnipro river Kyiv were hospitalized our hospital, which is one clinical bases Department Anesthesiology Intensive Care Bogomolets National Medi...