[ { "id": "authors:ajfca-9jy52", "collection": "authors", "collection_id": "ajfca-9jy52", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20121003-153955390", "type": "article", "title": "A Versatile Pseudo-Random Noise Generator", "author": [ { "family_name": "Lipson", "given_name": "Edward D.", "clpid": "Lipson-E-D" }, { "family_name": "Foster", "given_name": "Kenneth W.", "clpid": "Foster-K-W" }, { "family_name": "Walsh", "given_name": "Michael P.", "clpid": "Walsh-M-P" } ], "abstract": "A detailed design is presented for a digital pseudo-random noise generator. The instrument is built with standard integrated circuits. It produces both binary noise (pseudo-random binary sequences) and white Gaussian noise of variable bandwidth. By setting front panel switches to match tabulated octal codes, one may select a vast number of independent noise programs.", "doi": "10.1109/TIM.1976.6312323", "issn": "0018-9456", "publisher": "IEEE", "publication": "IEEE Transactions on Instrumentation and Measurement", "publication_date": "1976-06", "series_number": "2", "volume": "25", "issue": "2", "pages": "112-116" }, { "id": "authors:qc9yd-kcv36", "collection": "authors", "collection_id": "qc9yd-kcv36", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:FOSjgp73", "type": "article", "title": "The Light Growth Response of Phycomyces", "author": [ { "family_name": "Foster", "given_name": "K. W.", "clpid": "Foster-K-W" }, { "family_name": "Lipson", "given_name": "E. D.", "clpid": "Lipson-E-D" } ], "abstract": "With the help of an automated tracking system we have studied the characteristics of the transient light growth response of Phycomyces. The response shows a sharply defined latency. The Q10 of the reciprocal latency is 2.4. Response patterns at different peaks of the action spectrum are the same. The gradual variation of response magnitude over a wide range of adapted intensifies parallels that of phototropism. The responses to saturating stimuli exhibit a strong oscillation with a constant period of 1.6 min and variable damping. The growth responses to sinusoidally varying light intensities show a system bandwidth of 2.5 x 10-3 Hz. The linear dependence of phase shift on frequency is largely attributable to the latency observed with pulse stimuli. In the high intensity range a previously suspected increase of the steady-state growth rate with intensity has been confirmed. The light growth responses of mutants selected for diminished phototropism have been investigated. Many of these mutants have sizable but grossly distorted growth responses.", "doi": "10.1085/jgp.62.5.590", "pmcid": "PMC2226129", "issn": "0022-1295", "publisher": "Rockefeller University Press", "publication": "Journal of General Physiology", "publication_date": "1973-11", "series_number": "5", "volume": "62", "issue": "5", "pages": "590-617" }, { "id": "authors:pesrx-6t940", "collection": "authors", "collection_id": "pesrx-6t940", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:BERbactrev69", "type": "article", "title": "Phycomyces", "author": [ { "family_name": "Bergman", "given_name": "K.", "clpid": "Bergman-K" }, { "family_name": "Burke", "given_name": "Patricia V.", "clpid": "Burke-P-V" }, { "family_name": "Cerd\u00e1-Olmedo", "given_name": "E.", "clpid": "Cerd\u00e1-Olmedo-E" }, { "family_name": "David", "given_name": "C. N.", "clpid": "David-C-N" }, { "family_name": "Delbr\u00fcck", "given_name": "M.", "clpid": "Delbr\u00fcck-M" }, { "family_name": "Foster", "given_name": "K. W.", "clpid": "Foster-K-W" }, { "family_name": "Goodell", "given_name": "E. W.", "clpid": "Goodell-E-W" }, { "family_name": "Heisenberg", "given_name": "M.", "clpid": "Heisenberg-M" }, { "family_name": "Meissner", "given_name": "G.", "clpid": "Meissner-G" }, { "family_name": "Zalokar", "given_name": "M.", "clpid": "Zalokar-M" }, { "family_name": "Dennison", "given_name": "D. S.", "clpid": "Dennison-D-S" }, { "family_name": "Shropshire", "given_name": "W., Jr.", "clpid": "Shropshire-W-Jr" } ], "abstract": "This monographic review on a fungus is not addressed to mycologists. None of the authors has been trained or has otherwise acquired a general proficiency in mycology. They are motivated by a common interest in the performances of signal handling exhibited by the sense organs of all organisms and by the desire to attack these as yet totally obscure aspects of molecular biology by the study of a microorganism with certain desirable properties. \n\nThe sporangiophore of the fungus Phycomyces is a gigantic, single-celled, erect, cylindrical, aerial hypha. It is sensitive to at least four distinct stimuli: light, gravity, stretch, and some unknown stimulus by which it avoids solid objects. These stimuli control a common output, the growth rate, producing either temporal changes in growth rate or tropic responses. \n\nWe are interested in the output because it gives us information about the reception of the various signals. In the absence of external stimuli, the growth rate is controlled by internal signals keeping the network of biochemical processes in balance. The external stimuli interact with the internal signals. We wish to inquire into the early steps of this interaction. For light, for instance, the cell must have a receptor pigment as the first\nmediator. What kind of a molecule is this pigment? Which organelle contains it? What chemical reaction happens after a light quantum has been absorbed? And how is the information introduced by this primary photochemical event amplified in a controlled manner and processed in the next step? How do a few quanta or a few molecules trigger macroscopic responses? Will we find ourselves confronted with devices wholly distinct from anything now known in biology?", "pmcid": "PMC378314", "issn": "0005-3678", "publisher": "American Society for Microbiology", "publication": "Bacteriological Reviews", "publication_date": "1969-03", "series_number": "1", "volume": "33", "issue": "1", "pages": "99-157" } ]