For Nagel's 'free agent variables' are really technical devices which function just like anaphoric pronouns by referring back to the agent for whom the consideration is a reason.
The former is cast in terms of whether a reason for one agent must also be a reason for anyone else while the latter is cast in terms of the occurrence of free agent variables in the sufficient condition for the application of the reason predicate corresponding to the reason.
Agent variables were used to represent (1) tissue damage and (2) cells.
However, due to the scope of the initial experiment to establish the effect of different nucleants (10 protein variables and 11 nucleating agent variables), resulting in over one hundred 96-well crystallization plates and over 10,000 crystallization drops, it was not feasible to set up replicates of the whole experiment.
Then, a state variable "Average Electricity Price Trend" which is used to express the most possible transitions of the system is developed so as to reduce the complexity and randomicity of the microgrid, and a multi-agent architecture including agents, state variables, action variables and reward function is formulated.
While gemcitabine (2′-2′-difluoro-2′-deoxycytidine, dFdC) displays wide-ranging antineoplastic activity as a single agent, variable response rates and poor intracellular metabolism often limit its clinical efficacy.
Cox proportional hazards models were generated to help determine the incremental contribution of SPECT sum stress score (SSS) and the imaging agent variable to the clinical index.
Such a reason will be agent-relative in virtue of the use of a free-agent variable to indicate that it is the agent's own culture which determines what reasons she has.
Unlike (P), the statement of the reason given in (P*) includes a non-trivial use of a free-agent variable in its insistence that the pleasure promoted must be p's.
Basically, if the sufficient condition for the application of the reason predicate (the condition given by the antecedent of the principle corresponding to the reason) includes such a free-agent variable then the reason is agent-relative; otherwise it is agent-neutral.
