Absorption spectra and fluorescence properties o f 2,3-dihydro-4( 1 H)-quinolinone deriva­ tives were studied at room temperature in different solvents. It has been found that the fluo­ rescence quantum yields and fluorescence decay times strongly depend on the molecular struc­ ture and solvent polarity. The character and the energy o f excited states were determined by PPP and CNDO /S quantum-...

We study nonlinear control systems in the plane, affine with respect to control. We introduce two sets of feedback equivariants forming a phase portrait PP and a parameterized phase portrait PPP of the system. The phase portrait PP consists of an equilibrium set E, a critical set C (parameterized, for PPP), an optimality index, a canonical foliation and a drift direction. We show that under wea...

In China, the number of public–private partnership (PPP) projects in museum field is relatively small, and success rate quite low, which highlights drawback an insufficient depth overall promotion. To break through this dilemma, paper objectively analyzes interest demands behavior-oriented conflicts between two stakeholders constructs a game model based on limited rationality for evolution part...

Broadband access plays a major role for the economic growth, and for the social, and cultural development of urban areas as well as for rural regions. In case of market failure, Public Private Partnerships (PPP), respectively Private Finance Initiatives (so called in the UK), can be a powerful tool to encourage the deployment of information and communication technologies, such as broadband serv...

the study is focused on the public-private partnership in health sector in sri lanka. as a developing country, sri lanka faces a challenging task in order to improve the infrastructure facilities of the country after ending the thirty years of war. there is a requirement to develop the country as a whole along with all the industries such as education, health, transport, agriculture, etc. to me...