2,875 research outputs found

    Energy and time as conjugate dynamical variables

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    The energy and time variables of the elementary classical dynamical systems are described geometrically, as canonically conjugate coordinates of an extended phase-space. It is shown that the Galilei action of the inertial equivalence group on this space is canonical, but not Hamiltonian equivariant. Although it has no effect at classical level, the lack of equivariance makes the Galilei action inconsistent with the canonical quantization. A Hamiltonian equivariant action can be obtained by assuming that the inertial parameter in the extended phase-space is quasi-isotropic. This condition leads naturally to the Lorentz transformations between moving frames as a particular case of symplectic transformations. The limit speed appears as a constant factor relating the two additional canonical coordinates to the energy and time. Its value is identified with the speed of light by using the relationship between the electromagnetic potentials and the symplectic form of the extended phase-space.Comment: Replaced to write Eqs. (34), (35) in the general for

    Public and private affairs marketing in rural tourism development

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    In Romania, the agro and rural tourism started as potential sources of living and become an alternative for the classic tourism. As we rise up on the presented papers in 2003, even if there is a significant development of the rural tourism, it is not very attractive to the Romanian people. The study made on County Dambovita area, shows that an important reason of the poor attractiveness of agro-tourism in mountains rural area is the les proper marketing of the services. Based on these conclusion and taking advantages on the public administration area, it was started a program of public and private marketing of rural tourism. The main stages of the programme were: 1) the evaluation of specific indicators of rural tourism like staying overnights, net using capacity in function and quality of provided services; 2) provide information and advertise the area facilities and natural environment using the public administration infrastructure; 3) make the link between the owners of tourism capacities and public servants by a briefly marketing training; 4) re-evaluation the indicators mention above. The results of the programme implementation prove that the public and private marketing, used in partnership by local authorities and of rural tourism services providers, could be a tool of better development. Never the les, the win-win situation rise up from the benefit of general economic development of the area obtained due to a larger flux of domestic and foreign tourists.tourism, development, public, private affairs, marketing

    System composite of the triplet’s of strategic overview – revised fundamentals

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    The STIQE 2004 paper presents the identified triplets at macro and micro level of the socio-economic system. Through the important triplets identified are the following: European Union (UE) – State Members (SM) – European Citizens (ECz); European parliament will (PW) – national commitment (NC) – personal desire (PD); sustainable development(SD) - environment protection(EP) - quality of life(QL); economics(EC) – social climate(SC) – politics(P); material resources(MR) – financial resources(FR) – human resources(HR); life security (peace)(LS) – food security (survival)(FS) – environment security(ES); agriculture development (AD) - industrial development (ID) – infrastructure development (IsD); jobs/salaries (JS) – affordability/ expenses (AE) - quality of life (QL). It was also proposed a way of the triplets identification, a system to organize and link them on two dimensions: micro and macro level, and to get possible final structures by linking the two plans. The output, through a geometrical approach, has to be a system of interconnected triplets able to provide potential effects on the whole by action (modification) one point, than could be use for national strategies design and effects estimation. According with the opinions expressed at the conference we decide to revise the fundamentals of the theory. So, there were settled some criteria of knots identification, triplets assemble and plans definition. The main delimitation are euro/national areas, micro/macro levels and socio/economic approaches. The revised fundamentals are based on a more structured view, able to conduct us to a better triplets assembly as a whole. Also, the selection of the knots is made more carefully taken into account the future step of their evolution and dependences expressed by mathematic functions. At the same time there were identified potential factors of knots influence. It is a step back on the theory development, but it allows a better analysis and structuring of the elements taken into account, that could be a crucial decision in reaching the right composite of the system.sustainable development, triplets, overview, strategy, fundamentals

    Book review

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