Let V denote a vector space over C with finite positive dimension. By a Leonard triple on V we mean an ordered triple of linear operators on V such that for each of these operators there exists a basis of V with respect to which the matrix representing that operator is diagonal and the matrices representing the other two operators are irreducible tridiagonal. Let D denote a positive integer and...

In recent years, interest in many-valued logics for computer science has increased considerably, and there is certainly a need for good and thorough textbooks on the subject geared towards that potential area of application, namely, computer science. The authors of the volume Many-valued Logics 1 , Leonard Bolc and Piotr Borowik, have set out to do just that. The volume under review here is the...

He took his M.D. in 1890. He was appointed House Surgeon to the Children's Hospital, then Registrar and in 1896 Physician : he held this appointment until 1905 when he was appointed Consultant Physician. During the whole of his life, until he retired in 1946, he was in busy general practice, and endeared himself to all whom he met, patients and colleagues alike. He was an enthusiastic pioneer m...

At the beginning of World War II, Leonard Browne volunteered for service again, in the psychiatric work of the Army, and was amongst the first group of specialists to be called up. He earned a great reputation for solid reliability, and for imaginative ideas to improve morale and prevent breakdown. He had a big share in the pioneering of young soldier battalions, with their special arrangements...

In an era in which schools are expected to achieve more for their students, many teachers remain frustrated by the increasing results-driven demands made on them. A facet of teacher work life in which many feel disempowered is addressed in this study—the regular infringement of outside intrusions into the classroom learning environment. A stratified random selection of teachers in the Canadian ...

Although several workers have investigated the serological characteristics of the organisms in the genus Rhizobium, few have given much consideration to the possible relationships between bacteria isolated from plants of the soybean, cowpea, and lupine groups. Moreover, none of these workers has had the benefit of recent discoveries in immunology, which have made new concepts and new techniques...

The protein component of a number of enzyme systems contains SH groups which are either freely reacting or sluggish. The freely reacting SH groups give the nitroprusside test in the native protein, are easily oxidized by mild oxidizing agents and alkylating agents in low concentrations (iodoacetate,mustardgas, diphosgene, cyanogenchloride), and readily form mercaptides. On denaturation, the slu...

By Sir LEONARD ROGERS, k.c.s.i., m.d., f.r.c.p., f.r.s. MAJOR-GENERAL, I.M.S. (retd.) i'HE analysis of the results of my forecast of the incidence of cholera, smallpox and plague in 1932, recorded below, shows it to have been the most accurate of the three yet issued, in spite of the well-distributed rains of 1931 having made a forecast difficult. As the two previous forecasts also proved more ...

Although several workers have investigated the serological characteristics of the organisms in the genus Rhizobium, few have given much consideration to the possible relationships between bacteria isolated from plants of the soybean, cowpea, and lupine groups. Moreover, none of these workers has had the benefit of recent discoveries in immunology, which have made new concepts and new techniques...