Introduction An investigation of the chemical changes that take place in tobacco during curing is in progress at the Kentucky Agricultural Experiment Station. Attempts are being made to determine what the normal changes are and how they are influenced by such variables as temperature and relative humidity, which have been shown to influence the final quality of tobacco. A study of this type add...

Motivated by the problem of reengineering legacy digital circuits for which design information is missing or incomplete, this paper presents a new technique for representing the relationships among the internal components of a combinational circuit. This technique proves to be a powerful tool for redesign, capable of representing internal Boolean relationships in a fully or partially specified ...

1 This work study the effects of the noise spikes on the digital symbol synchronizers. In these synchronizers, we distinguish two types namely the combinational digital symbol synchronizers and the sequential digital symbol synchronizers. The combinational type has a phase detector without intern memory whereas the sequential type has a phase detector with intern memory. The objective is to stu...

Ordered Binary Decision Diagrams (OBDDs) have already proved useful in the veriication of combinational and sequential circuits. Due to limitations of the descriptive power of OBDDs several more general models of Binary Decision Diagrams have been studied. In this paper,-OBDDs-also known as Mod2OBDDs-in respect to their ability to serve as a tool for combinational veriication are considered. Be...

We develop mathematical switch-level models for static combinational CMOS networks. In contrast to other dVdihbk MOS models and theories, our models capture design principles that are special to CMOS, such as the use of transmission gates. First we study networks consisting of cascade connections of CMOS cells realizing negative functions. We then extend this model to incorporate transmission g...

background and aims. newer curing units such as plasma arc can polymerize the sealants in much shorter curing times. the aim of this study was to compare the effect of two different curing units on the micro-leakage of a fissure sealant material. materials and methods. sixty two extracted premolars without caries were randomly divided into two groups of 31 samples. occlusal surfaces of all teet...

phenolic resins are synthetic low molecular weight thermoset resins which are polymerized and cured to higher molecular weights by condensation method. these resins have high weathering resistance, high oxidative thermal properties and good chemical resistance. phenolic resins can be cured thermally or by acid curing. the most common method of curing phenolic resin is by thermal curing that tak...

A new method of test-per-clock BIST design for combinational circuits is proposed. The fundamental problem of matching the PRPG outputs with the required test patterns is solved as a general design problem in the field of combinational logic. A test set generated by an ATPG is compared with the PRPG generated sequence. The solution is based on a novel search algorithm, which identifies the best...

An elaborate analysis for various hardware implementations of digital filters is presented in this paper. A bit-true model of a sample digital filter is extracted from simulation based on the effects of finite word-length arithmetic. According to the extracted implementation parameters, four different hardware implementation methods are explored and compared. The bit-true model is described in ...

The test generation problem for a sequential circuit capable of generating tests with combinational test generation complexity can be reduced to that for the combinational circuit formed by replacing each FF in the sequential circuit by a wire. In this paper, we consider an application of this approach to general sequential circuits. We propose a test generation method using circuit pseudo-tran...