An analytic study was conducted on coupled partial differential equations. We formally derived new solitary wave solutions of generalized coupled system of Zakharov-Kuznetsov (ZK) and KdV equations by using modified extended tanh method. The traveling wave solutions for each generalized coupled system of ZK and KdV equations are shown in form of periodic, dark, and bright solitary wave solution...

Graz University of Technology, Institute of Environmental Biotechnology, Petersgasse 12, A6 8010 Graz, Austria; Julius Kühn-Institut (JKI), Messeweg 11, D-38104 Braunschweig, 7 Germany, Kawanda Agricultural Research Institute, National Banana Research Program, 8 Uganda; Makerere University, Department of Agricultural Production, College of 9 Agricultural and Environmental Sciences, Uganda and B...

The author contends that sex differentials in childhood mortality in Pakistan are a likely outcome of son preference behavior by parents. Consideration is given to the historical improvement in the female disadvantage in mortality, the neglect of female children, gender and class factors, and son preference and high fertility. Data are from the 1981 Pakistan census and other official surveys....

000 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031 032 033 034 035 036 037 038 039 040 041 042 043 044 045 046 047 048 049 050 051 052 053 054 055 056 057 058 059 060 061 062 063 064 065 066 067 068 069 070 071 072 073 074 075 076 077 078 079 080 081 082 083 084 085 086 087 088 089 090 091 092 093 094 095 096 097 098 0...

Multivariate quadratic systems can be used to construct both secure and efficient public key schemes. In this article, we introduce the necessary mathematical tools to deal with multivariate quadratic systems, present an overview of important schemes known so far and outline how they fit into a taxonomy of only four basic schemes and some generic modifiers. Moreover, we suggest new construction...

1) CGUL, IDL, University of Lisbon, Faculdade de Ciencias Ed. C8, Campo Grande, PT-1749-016 Lisbon, Portugal 2) Institute for Atmospheric and Climate Science, ETH, Universitaetsstr. 16, CH-8092 Zurich, Switzerland 3) Moscow State University, Research Computing Center, Faculty of Geography, GSP-1, Leninskie Gory, building 4, RU-119991 Moscow, Russia 4) European Centre for Medium-Range Weather Fo...

We present a full result for the 2+1 flavor QCD equation of state. All the systematics are controlled, the quark masses are set to their physical values, and the continuum extrapolation is carried out. This extends our previous studies [JHEP 0601:089 (2006); 1011:077 (2010)] to even finer lattices and now includes ensembles with Nt = 6, 8, 10, 12 up to Nt = 16. We use a Symanzik improved gauge ...

The Neotropical genus Costitachys Erwin 1974 is revised. Newly discovered specimens of a new species of Costitachys from Ecuador provide comparative genitalic characters of males for the genus and extend its range 2900 km west of its previously known distribution into an additional center of species radiation in South America, the "North Andean Slope." A new species, Costitachys tena Erwin and ...