We unify the theory of cyclic and diagonal products of elements of matrices. We obtain some new results on diagonal similarity, diagonal equivalence, complete reducibility and total support. 1. I N T R O D U C T I O N Cyclic products of e lements of matrices have been considered by Fiedler and P tak [4]. Diagonal products were considered b y Sinkhorn and Knopp Elll. We a t t emp t to give a uni...

The da rk e lect rochemical po lymer iza t ion of o -pheny lened iamine (OPD) a t n-WSe2 and n-MoSes single crys ta l e lectrodes (surface j_C axis exposed) w a s invest igated. The resul ts indicate that po lymer iza t ion occurs only at surface imperfec t ions (edges, steps) in the o therwise smooth van der Waal ' s surface. The photoelec t rochemical response, in aqueous solutions containing...

A GENERAL MODEL OF COOPERATIVITY AND ITS A P P L I C A T I O N TO DPG INHIBITION OF HEMOGLOBIN OXYGENATION Judith Herz fe ld + and H. Eugene Stanley* +Depa r tmen t of C h e m i s t r y , " D e p a r t m e n t of P h y s i c s , and +*Center for Ma te r i a l s Science and Eng inee r ing M a s s a c h u s e t t s Inst i tute of Technology, Cambr idge , M a s s a c h u s e t t s 02139 Received A...

*Assistant Director, Bureau of Research and Statistics. Much of the basic material in this article was obtained by Mr. Cohen during a visit to Chile in July 1942; he was assisted in its preparation by Evelyn Boyer of the Division of Health and Disability Studies and Loucele Horowitz of the Division of Coordination Studies. T H E REPUBLIC OF CHILE stretches for more t h a n 2,600 miles along the...

1. I N T R O D U C T I O N The present paper is a imed at the quant i ta t ive es t imat ion of approx imat ion error in the verification of computa t iona l codes [1-3]. The error in prac t ica l ly useful functionals due to the approx imat ion error may be calcula ted using adjoint equat ions and different forms of the residual [4-13]. For example, the residual may be calcula ted for a differ...

Dilu te-solut ion t ranspor t equa t ions wi th cons tan t act ivi ty coeff icients are c o m m o n l y used to mode] s emiconduc tors. These equa t ions are cons is ten t wi th a Bo l t zmann dis t r ibut ion and are inval id in regions where the Species concent ra t ion is close to the respec t ive site concentra t ion. A more r igorous t r ea tmen t of t ranspor t in a s emiconduc to r requi...

While I disagree wi th the proposi t ion t h a t da t abase query has out l ived its usefulness as a tes t env i ronment for na tu r a l language processing (for reasons t h a t I give below), I believe there are o ther reasonable tasks which can also spur new research in NL processing. In par t icular , I will suggest t h a t the task of providing a na tu ra l language interface to a rich p ro...

This paper investigates further the question of whether the flagella of Proteus mirabilis emerge from basal bodies. The bacteria were grown to the stage of swarmer differentiation, treated lightly with penicillin, and then shocked osmotically. As a result of this treatment, much of the cytoplasmic content and also part of the plasma membrane were removed from the cells. When such fragmented org...

Direct seeding of southern pines has been a versatile and inexpensive alternative to planting on many reforestation sites across the South. Successful direct seeding has required that seeds be coated with thiram to repel birds, and with endrin to repel rodents. Endrin, which is extremely toxic, is no longer produced in the United States. Therefore, a substitute is needed. Oleoresin capsicum, a ...

years o r decades . W h e n mode l s a r e calibrat­ ed , it genera l ly is a s s u m e d tha t t h e aqui fe r system is in a na tu ra l s teady state cond i t ion p r io r to h u m a n inf luence. P a p e r s p r e s e n t e d d u r i n g this sympos ium d e m o n s t r a t e t h e falla­ cy of this a s sumpt ion in m a n y s i tuat ions. Many of t h e talks s h o w e d tha t g r o u n d w a ...