To enhance models for refinery processes it seems inevitable to increase the level of compositional detail to a much higher level than today. In previous work, we have developed a simulation technique for steady-state simulation, which pays respect to the particularities of this type of detailed composition models. With this new technique, it seems to be possible to significantly lower the comp...

There seems to be also an intellectual aura of pessimism and complacency hanging over Mental Deficiency which is expressed in tolerating and accepting the existing status as almost inevitable and insoluble. Apart from the few exceptions, doctors and psychologists alike show very little effort in re-examining the validity of old concepts in the light of slowly accumulating experimental evidence....

W ITH PROGRESS in space technology, prolonged space travel and temporary habitation of extraterrestrial bodies seems inevitable. For short-term missions the provision of food and breathable air can best be met by an expendable system-that is, a life support system which provides basic needs entirely out of stored products. Missions covering extended periods of time, however, due to payload limi...

The purpose of this article is to give a report of certain progress being made in our technology which promises to be of importance to the field of international communication. This technological advance which is looming on the near horizon is the possibility of translating languages automatically by means of machines. Perhaps we should not call it just a possibility, for this development seems...

The olfactory system is one of our fundamental senses, responsible for the detection of airborne chemicals from our surroundings. These chemicals include small volatile molecules, proteins, peptides to gaseous substances, such as carbon dioxide, and provide valuable information regarding the location of food, mates and potential danger. The ability of the olfactory system to detect and orchestr...

Blind source separation of two electromagnetic fields is investigated. The difficulty of this task lies in the fact that only the power, which is the square of the sum of the electromagnetic fields, can be directly measured; the cross term of the electromagnetic fields is inevitable, and a strong correlation occurs in blind deconvolution. However, the relative phase is physically different from...

Our concern in this paper is to obtain information about the structure of centralizers of elements of locally finite simple groups, in the light of the classification of finite simple groups (CFSG). This classification, in the form that the number of sporadic simple groups is finite, is frequently used, as seems inevitable if real progress with locally finite simple groups is to be made. Centra...

Cirrhosis due to hepatitis C virus (HCV) is now the most common indication of liver transplantation in Western Europe and the United States. In the absence of effective prophylaxis, recurrent HCV infection is almost inevitable. Though the natural history and intermediate term outcome of recurrent HCV are now better documented, those factors which may influence the recurrence of hepatitis and co...

Transformation of coordinates usually invokes level-wised processes wherein several sets of complicated equations are calculated. Unfortunately, the accuracy may be corrupted due to the accumulation of inevitable errors between the transformation processes. This paper presents a genetic-based method for generating regressive models for direct transformation from GPS signals to 2-D coordinates. ...

The number of adult patients with a systemic right ventricle (RV) is steadily increasing. Survival is relatively good in these patients, but deterioration of the systemic RV seems inevitable. Although therapeutic options for patients with LV failure are well established, their role in patients with systemic RV failure is often undefined. To appreciate the potency of LV failure therapy in patien...