Introduction The span of the distance between the Bretton woods system collapse time and present time is about 40 years. During this period of time, the international exchange rate system has transfo
【Abstract】Square-shaped Split-ring resonator (SRR) left-hand Material(LHM) is proposed in Radio frequency band and S parameter extraction method was used to extract the effective permittivity and perm
Introduction Altruism, according to Merriam-Webster Dictionary, is defined as “unselfish regard for or devotion to the welfare of others”. The altruistic behaviors are never purely altruistic; instea