The Law of Inertia plays a key role in the scheme of constructive axioms for the General Theory of Relativity. A new formulation of this law which avoids the circularity problems inherent in previous formulations is presented. The empirical status of this law and the manner in which it provides a non-conventional foundation for the Law of Motion and the definition of physical forces is established. First, quite general path structures are discussed which are not defined at the outset in (...) terms of geodesic paths and which require for their description only the local differential topological structure. Secondly, a number of theorems are presented which serve as purely local differential topological criteria for singling out from among the general path structures the geodesic ones that represent the inertial structure of spacetime. (shrink)

For more than 20 years, both here and abroad, significant efforts have been undertaken to provide equal access to nutritional food for all citizens. Yet, the numbers of under-nourished continue to rise, as do those afflicted with non-communicable diseases (NCDs) such as obesity, diabetes, hypertension, and heart disease. Clearly, current efforts are not working. Relying on the psychological phenomena of learned helplessness and fundamental attribution error, it is argued that certain individuals may not be willing, or able, to take actions (...) that are currently prescribed regarding access to nutritious food. The water is muddied regarding potential solutions as the various actors involved (e.g., corporations, governments, individuals) cannot agree on a starting point and continue to point fingers regarding responsibility. It is posited that emphasis needs to shift from the current “one-size-fits-all” approach to one that is more tailored to the various actors, specifically the individuals. Within the group of individuals (consumers), based on Wenar’s Least Cost Theory, even further distinction must be made between those who see themselves as capable actors and those who do not. In this conceptual piece intended to refocus the discussion surrounding food access, we propose that future research should approach these issues from a unit of analysis perspective in an attempt to identify the solutions most likely to succeed at various participating levels. (shrink)

The claim that distant simultaneity with respect to an inertial observer is conventional arose in the context of a space-and-time rather than a spacetime ontology. Reformulating this problem in terms of a spacetime ontology merely trivializes it. In the context of flat space, flat time, and a linear inertial structure (a purely space-and-time formalism), we prove that the hyperplanes of space for a given inertial observer are determined by a purely spatial criterion that depends for its validity only on the (...) two-way light principle, which is universally regarded as empirically verified. All (empirically determined) “spacetime” entities, such as the conformal structure or light surface equation, are used in a purely mathematical manner that is independent of and hence isneutral with respect to the ontological status that is ascribed to them. In this regard, our criterion is significantly stronger than thespacetime criterion recently advanced by D. Malament, which appeals explicitly to the conformal orthogonality of spacetime vectors and to the invariance of the conformal-orthogonal structure of spacetime under the causal automorphisms of spacetime. Once the hyperplanes of space for a given inertial observer have been determined by our empirical and purely spatial criterion, the following holds: there exists one and only one $\vec \varepsilon $ -synchronization procedure, namely the standard procedure proposed by Einstein, such that the planes of common time are thesame as the nonconventional hyperplanes of space for the inertial observer. It follows that our criterion provides an empirical even if indirect method for determining that the one-way speed of light is the same as the average two-way speed of light. In addition, two inertial observers that are not at rest with respect to each other necessarily havedifferent hyperplanes of space, and consequently their respective spatial views cannot be encompassed in a single three-dimensional space. Hence, our purely spatial criterion provides an empirical motivation for adopting the more comprehensive spacetime ontology. (shrink)

Despite worldwide attention given to food access, very little progress has been made under the current model. Recognizing that individual engagement is likely based on individual experiences and perceptions, this research study investigated whether or not a correlation exists between one’s socioeconomic status (SES) and perceived personal responsibility for food access. Discussion of results and implications provide fresh insight into the ongoing global debate surrounding food access. Outcomes also provide insight into willing and able participants and point to least-cost solutions (...) which may be better suited to implement and initiate change. Results indicate that the issue of food access is more complex than simply lobbying for better decision-making among individuals and populations, highlighting the importance of unit of analysis considerations. (shrink)