This paper analyses the relativistic stellar aberration requirements for the Space Interferometry Mission (SIM). We address the issue of general relativistic deflection of light by the massive self-gravitating bodies. Specifically, we present estimates for corresponding deflection angles due to the monopole components of the gravitational fields of a large number of celestial bodies in the sola...

ACL2 is a theorem prover for a purely functional subset of Common Lisp. It inherits Common Lisp’s unhygienic macros, which are used pervasively to eliminate repeated syntactic patterns. The lack of hygiene means that macros do not automatically protect their producers or consumers from accidental variable capture. This paper demonstrates how this lack of hygiene interferes with theorem proving....

Over the past two decades, Scheme macros have evolved into a powerful API for the compiler front-end. Like Lisp macros, their predecessors, Scheme macros expand source programs into a small core language; unlike Lisp systems, Scheme macro expanders preserve lexical scoping, and advanced Scheme macro systems handle other important properties such as source location. Using such macros, Scheme pro...

One of the base concepts of object-oriented programming is that of " method ". In languages supporting inheritance, this concept is realized by three different actions: (i) the introduction of a new method; (ii) the implementation/override of an existing method; (iii) the method call. The bindings between (ii) and (i), and between (iii) and (i) are typically based on method names, which are not...

It is known that the essential ingredients of a Lisp-style unhygienic macro system can be expressed in terms of advanced hygienic macro systems. We show that the reverse is also true: We present a model of a core unhygienic macro system, on top of which a hygiene-compatible macro system can be built, without changing the internals of the core macro system and without using a code walker. To ach...

INTRODUCTION: It is impossible to improve medical supervision of military personnel’s service conditions and life in the near future without creating a global monitoring network, which real time allows evaluate all habitat critical points with greatest impact on health thereby respond quickly changes sanitary epidemiological situation. requires creation development an established information ex...

4 ABSTRACT: Anaerobic digestion (AD) of the organic fraction of municipal solid waste (OFMSW) 5 is promoted as an energy source and more recently as a GHG mitigation measure. In this context, AD 6 systems operating at thermophilic temperatures (55-60C) – compared to mesophilic temperatures 7 (35-40C) – have the unique feature of producing hygienic soil conditioners with greater process 8 effici...

in this study, residual amount of pentachlorophenol (pcp) as the most important paper preservative, which is extremely hazardous pollutant, was determined in some tissue papers and napkins. twenty-five samples of two producing hygienic paper factories prepared from virgin and secondary pulp were analyzed for the presence of trace amount of pcp. the analytical procedure involved direct extractio...

The scientific work “Research of recirculation systems and air recovery systems” is devoted to the analysis selection most optimum ventilation that will reduce cost published products by reducing energy consumption. purpose this discover experimentally study characteristics affect use thermal electric heating in industry, as well create solutions allow achieve a decrease consumption fuel resour...