However, the queuing concept is limited for analyzing multi-echelon emergency transportation systems which are much more complex than other traffic networks.
However, in both approaches, the usage of this concept is limited to the project under analysis and there are no guidelines clearly indicated by the authors about how to reuse this knowledge in other projects.
In the designing of commercial air-conditioning systems, it is believed that the conventional fixed temperature set point concept is limited because indoor comfort temperature depends on the business culture, such as the nature of activities and dress code of occupants, etc.
The operationalisation of such a concept is limited by the availability of data in the dataset.
However, this idealistic concept is limited by practical constraints, such as access to resources, time invested in developing the search strategy and searching for studies, and knowledge of both appropriate search sources and search terms.
Multiple sclerosis is generally considered an inflammatory T-cell-mediated autoimmune disease (Sospedra and Martin, 2005), but the efficacy of therapeutic strategies based on this concept is limited, indicating that additional mechanisms are involved in disease pathogenesis (Goodin et al., 2002).
We were unable to carry out theoretical sampling as data were collected prior to analysis and development of concepts was limited by the data available.
Bisexuality, for me, is probably the right term, too; however, because I am also very attracted to transgendered people, that concept is limiting.
However, it is again a matter of controversy whether demonstrative concepts are limited in this way.
Both concepts are limited to cases in which all substances in a mixture influence the same experimental endpoint, and are usually tested against a "fixed ratio design" where the mixture ratio is kept constant throughout the studies and the overall concentration of the mixture is systematically varied.
