A response analyzer simultaneously receives multi-frequency signals transmitted from a plurality of answering devices and forms time divided pulses, which are counted to provide an indication of the number of answering devices which made responses. A plurality of AND gates are each associated with one of the multi-frequency signals, and operate to sample the time divided pulses in order to determine which of the answering devices made responses. Formation of time divided pulses from the simultan...

A teaching aid which is especially useful for individualized learning, and which makes possible adequate practice of an exercise involving, for example, fact-type learning materials which may be utilized repeatedly by the student without supervision, to obtain proficiency prior to actual testing and scoring by the instructor or teacher. By using the response unit, a student knows immediately whether a response is correct or incorrect. Indicia bearing cards, different sets of which are used in th...

This is a response letter of one piece construction which is open at a long upper side and at short side remote from the attachment of the extension with the body of the response letter. All of the surfaces of the response letter can be printed upon and an insert card can be inserted by machine.

The invention provides response regulator polypeptides and polynucleotides encoding response regulator polypeptides and methods for producing such polypeptides by recombinant techniques. Also provided are methods for utilizing response regulator polypeptides to screen for antibacterial compounds.

The present invention is directed to a novel Afx response element comprising the nucleotide sequence AACATGTT, said nucleotide sequence having a DNA binding site for the human fork head transkription factor Afx. The invention also relates to the use of the Afx response element in the screening for genes as diabetes drug targets and in the bioinformatic analysis of the human genome, said genes in turn being useful in other screening methods for compounds modifying the insulin receptor signaling p...

The invention provides Response regulator polypeptides and polynucleotides encoding Response regulator polypeptides and methods for producing such polypeptides by recombinant techniques. Also provided are methods for utilizing Response regulator polypeptides to screen for antibacterial compounds.

The invention provides Response regulator polypeptides and polynucleotides encoding Response regulator polypeptides and methods for producing such polypeptides by recombinant techniques. Also provided are methods for utilizing Response regulator polypeptides to screen for antibacterial compounds.

A characteristic response of a medium to an excitation transient of predetermined duration which causes the medium to emit a series of signals over a period of time which is long relative to the duration of the excitation transient is assessed. The signals are detected and the duration of each interval between successive signals is measured. A relationship relating the interval between the excitation transient and the emission of each signal to the interval between each signal and the preceding ...

A response processing system and method are disclosed wherein responses to prepared questions are made by marking appropriate areas on a card. The card is then fed to a reader/processor where a unique character substitution is made. The reader/processor prints out, via a conventional teletypewriter, the nature of the response of each person answering the questions. The substitution of a unique character enables one viewing the print-out to obtain a "feel" for the nature of the responses to each ...

A sound source located inside a tube having one end inside the mouth or nose of a subject provides an acoustic transient signal that propagates into the respiratory system of the subject to provide reflections sensed by a single mircophone inside the tube between the sound source and the mouth of the subject for recording on a transient recorder or computer and display on an oscilloscope after passing through a low pass filter to provide an output signal representative of the acoustical properti...