The problem of optimization of transaction costs is investigated in the article from system economic theory.The concept of a transaction is interpreted as an interaction that affects the products’ seller and the products’ buyer and the immediate system environment of each of them.The representation of such an environment in the form of a tetrad
Phase morphology and corresponding piezoelectricity in ferroelectric solid solutions were studied by using a phenomenological theory with the consideration of phase coexistence.Results have shown that phases with similar energy potentials can coexist, thus induce interfacial stresses which lead to the formation CCTV Cables of adaptive monoclinic ph
Cruise ships are large and complex, and it is difficult to manually make a plan to evacuate people to safe areas in a short time.Evacuation time and personnel safety are both important for emergency evacuation.This paper proposes an evacuation strategy that considers the path capacity and risk level to guide evacuees in fire; it not only ensures th
If the antihypertensive treatment that the medical group around the Fluids world has been using for more than 60 years has not managed to reduce cardiovascular morbidity and mortality, I believe that Medicine has done nothing to modify the natural history of the disease.It is likely that in the future it will be demonstrated from Epidemiology (but
Study region: The hilly area of Shandong Peninsula is a pivotal apple-producing region in China.However, the precise water sources utilized by the apple trees for transpiration Fluids remain poorly understood in this region.Study focus: Here we quantify the water sources used by apple trees in this area using stable isotopic tracing methods.Through