ion and a low reuse potential; while another requirement can be very general, with a of abstraction and thus a higher reuse potential. We identify the following abstraction specific requirements, generic requirements, and domain-requirements frameworks. Domain-specific requirements are requirements that are derived from a certain dom applications and are concerned only with this domain. Therefo...

In th is p ap er we stu d y two c lasses of im p rec ise p revisions, wh ic h we term ed c onvex and c entered c onvex p revisions, in th e f ram ework of Walley ’s th eory of im p rec ise p revisions. We sh ow th at c onvex p revisions are related with a c onc ep t of c onvex natu ral estension, wh ic h is u sefu l in c orrec ting a larg e c lass of inc onsistent im p rec ise p rob ab ility as...

Silver physical developers consist of silver ions and a reducing (developing) agent. They were formulated for developing latent images on photosensitive materials such as photographic emulsions. The mechanism of how the latent image nuclei catalyze the reduction of silver ions by a reducing agent to form black colloidal silver particles has been extensively studied. These developers also happen...

A number of in-vitro model systems have been introduced for the study of the action of morphine-like drugs. Their usefulness depends on their relative simplicity, compared to the brain and central nervous system, and on the good correlation observed between potencies in the models and potencies in the whole animal. For example, the contractions of the isolated guinea\x=req-\ pig ileum and mouse...

The course of patients who underwent radical operations for prostatic carcinoma was followed for at least 10 years in 108 cases. In this series there was no operative mortality, but the operation is not free from danger, and there were 10 cases of lasting post\x=req-\ operative incontinence. Of 15 patients who underwent radical perineal prostatectomy before 1947, 7 were living and well 10 years...

The epididymis is an androgen-sensitive tissue which responds to even minor fluctuations in circulating androgens (Prasad, Rajalakshmi, Gupta & Karkun, 1973). Epididymal receptors for androgens have been demonstrated (Blaquier, 1971) and male sex hormones are required for epididymal growth and structural and functional maintenance (Benoit, 1926; Risley, 1963 ; Price & Ortiz, 1965). Apart from c...

To the Editor:--Dr. Gerhard Redl is to be commended for his recent case report of cervical trauma in a patient with spondyloepiphyseal dysplasia congenita.' Significant injury followed what seemed to be routine endctracheal intubation. Many practitioners are reluctant to report such events, but we owe it to our colleagues and our patients to do so Dr. Redl summarized the atlantoaxial instabilit...

Uniformly rotating, homogeneous, incompressible Maclaurin spheroids that spin sufficiently rapidly are secularly unstable to nonaxisymmetric, bar-mode perturbations when viscosity is present. The intuitive explanation is that energy dissipation by viscosity can drive an unstable spheroid to a stable, triaxial configuration of lower energy – a Jacobi ellipsoid. But what about rapidly rotating co...

W e p rop ose a nov el schem e for function-b ased classification of ob jects in 3 D im ages. The classification p rocess calls for constructing a generic m ulti-lev el hierarchical d escrip tion of ob ject classes in term s of functional com p onents. F unctionality is d eriv ed from a large set of geom etric attrib utes and relationship s b etw een ob ject p arts. Initially, the inp ut range ...

With the advent of high speed communication networks interconnected with high bandwidth optical fiber, a variety of new services will be available to the common user. One of these services will undoubtedly be video communications. ,Whether it is yideotelephonY't/videoconferencing or simply broadcast video, the demand is here to display video on the desktop. As the TCrTI (International v Telegra...