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The Bell System Technical Journal (1922-1983)

The scientific discoveries and technological innovations produced by Bell System research and engineering were critical not only to the evolution of global telecommunications but, more widely, they had a considerable impact on the technological base of the global economy and, indeed, on our daily lives.



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Bell System Technical Journal, 27: 3. July 1948 pp 379-423. A Mathematical Theory of Communication. (Shannon, C.E.)
Topics: log, probability, channel, entropy, source, probabilities, sequences, symbols, discrete, sequence,...
Bell System Technical Journal, 57: 6. July-August 1978 pp 1899-1904. UNIX Time-Sharing System: Forward. (McIlroy, M.D.; Pinson, E.N.; Tague, B.A.)
Topics: unix, system, operating, programs, bell, programming, software, tools, language, program, operating...
Bell System Technical Journal, 28: 4. October 1949 pp 656-715. Communication Theory of Secrecy Systems. (Shannon, C.E.)
Topics: key, secrecy, message, systems, probabilities, system, equivocation, cryptogram, messages, cipher,...
Bell System Technical Journal, 28: 1. January 1949 pp 59-98. The Synthesis of Two Terminal Switching Circuits. (Shannon, Claude E.)
Topics: functions, variables, function, theorem, switching, network, elements, circuits, circuit,...
Bell System Technical Journal, 39: 4 July 1960 pp 745-808. The Theory and Design of Chirp Radars (Klauder, J.R.; Price, A.C.; Darlington, S.; Albersheim, W.J.)
Topics: signal, chirp, pulse, frequency, network, weighting, amplitude, radars, output, linear, system...
Bell System Technical Journal, 41: 3. May 1962 pp 877-884. On Non-Computable Functions. (Rado, T.)
Topics: turing, computable, entries, valid, score, entry, machine, binary, binary turing, functions, bell...
Bell System Technical Journal, 57: 6. July-August 1978 pp 1905-1929. The UNIX Time-Sharing System. (Ritchie, D.M.; Thompson, K.)
Topics: file, system, unix, user, program, files, directory, command, device, programs, operating system,...
Bell System Technical Journal, 35: 4. July 1956 pp 917-926. A New Interpretation of Information Rate. (Kelly, J.L., Jr.)
Topics: bets, gambler, log, transmitted, exponential, probability, rate, symbol, transmission,...
Bell System Technical Journal, 48: 5. May-June 1969 pp 1249-1292. The Chirp z-Transform Algorithm and Its Application. (Rabiner, Lawrence R.; Schafer, Ronald W. ; Rader, Charles M.)
Topics: fourier, transform, chirp, discrete, algorithm, samples, frequency, contour, fast, magnitude,...
Bell System Technical Journal, 24: 1. January 1945 pp 46-156. Mathematical Analysis of Random Noise . (Rice, S.O.)
Topics: noise, probability, random, function, sin, journal, spectrum, frequency, density, band, random...
Bell System Technical Journal, 27: 3. July 1948 pp 510-588. The Evolution of the Quartz Crystal Clock. (Marrison, Warren A.)
Topics: quartz, frequency, crystal, resonator, oscillator, clocks, pendulum, clock, bell, accuracy, quartz...
Bell System Technical Journal, 37: 3. May 1958 pp 711-718. Measurement of Sheet Resistivities with the Four-Point Probe. (Smits, F.M.)
Topics: resistivities, resistivity, probe, infinite, voltage, finite, measurement, sheet, sample,...
Bell System Technical Journal, 23: 3. July 1944 pp 282-332. Mathematical Analysis of Random Noise. (Rice, S.O.)
Topics: random, noise, probability, function, average, theorem, spectrum, interval, density, mathematical,...
Bell System Technical Journal, 13: 4. October 1934 pp 532-579. The Electromagnetic Theory of Coaxial Transmission Lines and Cylindrical Shields. (Schelkunoff, S.A.)
Topics: impedance, coaxial, electromagnetic, electromotive, surface, conductor, cylindrical, equations,...
Bell System Technical Journal, 27: 3. July 1948 pp 446-472. Spectra of Quantized Signals. (Bennett, W.R.)
Topics: signal, frequency, quantizing, quantized, signals, band, distortion, sampling, input, spectra,...
Bell System Technical Journal, 29: 3. July 1950 pp 295-342. Principles and Applications of Waveguide Transmission. (Southworth, George C.)
Topics: wave, force, electric, transmission, waves, waveguide, lines, magnetic, vector, reflection,...
Bell System Technical Journal, 30: 1. January 1951 pp 33-49. Television by Pulse Code Modulation. (Goodall, W.M.)
Topics: code, digits, pcm, amplitude, system, transmission, pulses, signal, system technical, quantized,...
Bell System Technical Journal, 34: 5. September 1955 pp 1045-1079. A Method for Synthesizing Sequential Circuits. (Mealy, George H.)
Topics: circuit, circuits, input, method, table, rule, combination, sequential, equivalence, synthesis,...
Bell System Technical Journal, 57: 6. July-August 1978 pp 1857-1879. Atlanta Fiber System Experiment: Results of the Atlanta Experiment. (Kerdock, R.S.; Wolaver, D.H.)
Topics: fiber, recovery, regenerator, signal, jitter, fibers, system, dispersion, optical, regenerators,...
Bell System Technical Journal, 28: 3. July 1949 pp 435-489. The Theory of p-n Junctions in Semiconductors and p-n Junction Transistors. (Shockley, W.)
Topics: current, holes, transition, diffusion, equation, potential, recombination, hole, electron,...
Bell System Technical Journal, 46: 9. November 1967 pp 1977-2018. A Solid-State Regenerative Repeater for Guided Millimeter-Wave Communication Systems. (Hubbard, W.M.; Goell, J.E.; Warters, W.D.; Standley, R.D.; Mandeville, G.D.; Lee, T.P.; Shaw, R.C.; Clouser, P.L.)
Topics: repeater, frequency, signal, input, filters, waveguide, power, output, filter, oscillator, timing...
Bell System Technical Journal, 36: 6. November 1957 pp 1389-1401. Shortest Connection Networks And Some Generalizations. (Prim, R.C.)
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Topics: shortest, terminal, connection, network, labelled, terminals, spanning, subtree, fragment,...
Bell System Technical Journal, 57: 6. July-August 1978 pp 1947-1969. UNIX Time-Sharing System: A Retrospective. (Ritchie, D.M.)
Topics: system, unix, file, files, user, bell, program, programs, device, operating, virtual address,...
Bell System Technical Journal, 46: 6. July-August 1967 pp 1055-1133. The Si-SiO2 Interface - Electrical Properties as Determined by the Metal-Insulator-Silicon Conductance Technique. (Nicollian, E.H.; Goetzberger, A.)
Topics: interface, bias, surface, density, capacitance, oxide, conductance, silicon, frequency, measured,...
Bell System Technical Journal, 61: 7. September 1982 pp 1745-1757. Stored Program Controlled Network: 800 Service Using SPC Network Capability - Network Implementation and Administrative Functions. (Haas, C.W.; Salerno, D.C.; Sheinbein, D.)
Topics: network, ncp, data, ncps, system, routing, implementation, ccis, data base, bell, service...
Bell System Technical Journal, 40: 1. January 1961 pp 43-63. Prolate Spheroidal Wave Functions, Fourier Analysis and Uncertainty - I. (Slepian, D.; Pollak, H.O. 65-84)
Topics: functions, spheroidal, bandlimited, fourier, eigenvalues, interval, wave, prolate, equation,...
Bell System Technical Journal, 7: 3. July 1928 pp 535-563. Transmission of Information. (Hartley, R.V.L.)
Topics: transmission, selections, symbols, wave, steady, transmitted, system, frequency, technical journal,...
Bell System Technical Journal, 27: 4 October 1948 pp 623-656. A Mathematical Theory of Communication (Shannon, C.E.)
Topics: entropy, log, ensemble, probability, functions, power, noise, theorem, function, continuous,...
Bell System Technical Journal, 29: 2. April 1950 pp 189-250. Traveling-Wave Tubes (Second Installment). (Pierce, J.R.)
Topics: field, circuit, phase, resonators, circuits, stored, frequency, velocity, electron, transverse,...
Bell System Technical Journal, 8: 4. October 1929 pp 613-631. A Method of Sampling Inspection. (Dodge, H.F.; Romig, H.G.)
Topics: inspection, sampling, tolerance, average, method, defective, acceptance, sample, minimum, pieces,...
Bell System Technical Journal, 32: 2. March 1953 pp 406-424. A Study of Non-Blocking Switching Networks. (Clos, Charles)
Topics: crosspoints, array, switching, equation, intermediary, outputs, inputs, switches, switch, input,...
Bell System Technical Journal, 30: 1. January 1951 pp 50-64. Prediction and Entropy of Printed English. (Shannon, C.E.)
Topics: entropy, prediction, text, frequencies, probabilities, probability, letters, letter, rectangular,...
Bell System Technical Journal, 9: 2. April 1930 pp 364-389. Economic Quality Control of Manufactured Product. (Shewhart, W.A.)
Topics: quality, variability, assignable, control, limits, journal, statistical, product, tensile,...
Bell System Technical Journal, 13: 1. January 1934 pp 1-18. Stabilized Feedback Amplifiers. (Black, H.S.)
Topics: feedback, amplifier, gain, amplifiers, output, modulation, amplification, stability, variations,...
Bell System Technical Journal, 48: 4. April 1969 pp 1065-1093. Coaxial Cable and Apparatus. (Duvall, G.H.; Rackson, L.M.)
Topics: cable, coaxial, apparatus, coaxials, repeater, inch, impedance, coax, pairs, terminal, return loss,...
Bell System Technical Journal, 9: 4. October 1930 pp 652-667. A Survey of Room Noise in Telephone Locations. (Williams, W.J.; McCurdy, Ralph G.)
Topics: noise, noises, room, meter, frequency, residence, masking, measurements, telephone, warbler, bell...
Bell System Technical Journal, 29: 2. April 1950 pp 147-160. Error Detecting and Error Correcting Codes. (Hamming, R.W.)
Topics: code, error, codes, positions, minimum, single, correcting, parity, check, detecting, code points,...
Bell System Technical Journal, 58: 6. July-August 1979 pp 1425-1435. Application of Optimization Theory to the Control of the Optical Fiber Drawing Process. (Smithgall, D.H.)
Topics: fiber, diameter, loop, control, measurement, response, process, drawing, optical, frequency, system...
Bell System Technical Journal, 17: 1. January 1938 pp 17-48. The Impedance Concept and its Application to Problems of Reflection, Refraction, Shielding and Power Absorption. (Schelkunoff, S.A.)
Topics: impedance, wave, waves, impedances, reflection, ratio, radial, transmission, field, characteristic,...
Bell System Technical Journal, 27: 1. January 1948 pp 44-57. Electron Beam Deflection Tube for Pulse Code Modulation . (Sears, R.W.)
Topics: beam, grid, electron, aperture, deflection, quantizing, pulse, code, tube, plate, output plate,...
Bell System Technical Journal, 11: 1. January 1932 pp 126-147. Regeneration Theory. (Nyquist, H.)
Topics: integral, amplifier, values, expression, lim, curve, network, integration, regeneration, integrand,...
Bell System Technical Journal, 16: 1. January 1937 pp 35-44. The Physical Reality of Zenneck's Surface Wave. (Wise, W. Howard)
Topics: wave, surface, zenneck, asymptotic, series, sin, tilt, plane, vertical, dipole, wave antennas,...
Bell System Technical Journal, 22: 3. October 1943 pp 269-277. Effect of Feedback on Impedance. (Blackman, R.B.)
Topics: feedback, impedance, terminals, fop, connected, amplifier, tube, grid, network, formula, bell...
Bell System Technical Journal, 2: 3. July 1923 pp 112-140. Telephone Equipment for Long Cable Circuits. (Demarest, Charles S.)
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Topics: cable, equipment, repeater, signaling, jacks, mounted, circuits, apparatus, circuit, testing,...
Bell System Technical Journal, 59: 2. Feb 1980 pp 183-228. Rain Attenuation on Earth-Satellite Paths - Summary of 10-Year Experiments and Studies. (Lin, S.H.; Bergmann, H.J.; Pursley, M.V.)
Topics: rain, attenuation, measured, elevation, distributions, fade, data, ghz, satellite, diversity, data...
Bell System Technical Journal, 16: 4. October 1937 pp 513-540. Variable Frequency Electric Circuit Theory with Application to the Theory of Frequency-Modulation. (Carson, John R.; Fry, Thornton C.)
Topics: frequency, amplitude, exp, noise, modulation, theory, modulated, wave, circuit, signal, frequency...
Bell System Technical Journal, 37: 1. January 1958 pp 185-282. The Measurement of Power Spectra from the Point of View of Communications Engineering - Part I. (Blackman, R.B.; Tukey, J.W.)
Topics: frequency, spectrum, function, spectra, measurement, fourier, spectral, power, values, estimates,...
Bell System Technical Journal, 14: 2. April 1935 pp 211-214. A General Theory of Electric Wave Filters. (Bode, H.W.)
Topics: filter, filters, impedance, roots, ladder, theory, structures, image, impedances, general, filter...
Bell System Technical Journal, 49: 5. May-June 1970 pp 827-852. An Integral Charge Control Model of Bipolar Transistors. (Gummel, H.K.; Poon, H.C.)
Topics: base, collector, emitter, model, voltage, charge, parameters, current, capacitance, equation, bell...
Bell System Technical Journal, 37: 3. May 1958 pp 581-635. Distribution of the Duration of Fades in Radio Transmission: Gaussian Noise Model. (Rice, S.O.)
Topics: fades, probability, curves, values, duration, interval, spectrum, exp, median, approaches, noise...
Bell System Technical Journal, 54: 10. December 1975 pp S89-S99. SAFEGUARD Data-Processing System: Central Logic and Control Operating System. (Haggerty, J.P.)
Topics: operating, system, clc, ioc, processors, user, processor, execute, task, program, bell system,...
Bell System Technical Journal, 8: 2. April 1929 pp 309-367. The Receiving System for Long-Wave Transatlantic Radio Telephony. (Bailey, Austin; Dean, S.W.; Wintringham, W.T.)
Topics: antenna, antennas, directional, radio, receiving, transatlantic, array, frequency, desired,...
Bell System Technical Journal, 2: 3. July 1923 pp 101-111. Permalloy, A New Magnetic Material of Very High Permeability. (Arnold, H.D.; Elmen, G.W.)
Topics: permalloy, permeability, magnetic, cent, properties, magnetizing, alloys, nickel, alloy,...
Bell System Technical Journal, 40: 6. November 1961 pp 1665-1715. The Automatic Protection Switching System of TH Radio. (Giger, A.J.; Low, F.K.)
Topics: channel, switching, protection, transmitting, signal, receiving, circuit, switch, voltage, logic,...
Bell System Technical Journal, 27: 3. July 1948 pp 487-509. Methods of Electromagnetic Field Analysis. (Schelkunoff, S.A.)
Topics: equations, transmission, electromagnetic, network, impedance, magnetic, field, modes, wave,...
Bell System Technical Journal, 27: 4 October 1948 pp 593-622. Equivalent Circuits of Linear Active Four-Terminal Networks (Peterson, Liss C.)
Topics: equivalent, circuit, network, grid, networks, triode, grounded, admittance, cathode, circuits,...
Bell System Technical Journal, 48: 9. November 1969 pp 2909-2947. Coupled Wave Theory for Thick Hologram Gratings. (Kogelnik, Herwig)
Topics: holograms, grating, diffraction, gratings, equation, dielectric, wave, absorption, bragg, angular,...
Bell System Technical Journal, 5: 4. October 1926 pp 529-538. Radio Signaling System for the New York Police Department. (Anderson, S.E.)
Topics: receiver, signaling, selector, relay, radio, signal, tube, system, circuit, transmitter, york...
Bell System Technical Journal, 5: 4. October 1926 pp 539-554. Wave Propagation in Overhead Wires with Ground Return. (Carson, John R.)
Topics: impedance, ground, propagation, mutual, wire, surface, formulas, axial, electric, wave, mutual...
Bell System Technical Journal, 59: 6. July-August 1980 pp 897-929. A Class of Data Traffic Processes - Covariance Function Characterization andRelated Queuing Results. (Heffes, H.)
Topics: poisson, covariance, queuing, call, calls, arrival, process, packet, rate, processes, bell system,...
Bell System Technical Journal, 38: 3. May 1959 pp 749-783. Stabilization of Silicon Surfaces by Thermally Grown Oxides. (Atalla, M.M.; Tannenbaum, E.; Scheibner, E.J.)
Topics: surface, silicon, surfaces, field, oxide, observed, oxidation, oxidized, impurities, stabilization,...
Bell System Technical Journal, 20: 4. October 1941 pp 415-433. The History of Electrical Resonance. (Blanchard, Julian)
Topics: resonance, electrical, patent, circuit, spark, leyden, condenser, alternating, discharge, current,...
Bell System Technical Journal, 25: 2. April 1946 pp 167-348. The Magnetron as a Generator of Centimeter Waves. (Fisk, J.B.; Hagstrum, H.D.; Hartman, P.L.)
Topics: magnetron, resonator, frequency, anode, output, magnetrons, mode, cathode, magnetic, circuit,...
Bell System Technical Journal, 41: 4. July 1962 pp 1337-1346. A Method for Simplifying Boolean Functions. (Scheinman, A.H.)
Topics: prime, implicants, numbers, boolean, function, residues, simplifying, decimal, functions, method,...
Bell System Technical Journal, 44: 8. October 1965 pp 1675-1698. Design Theory of Balanced Transistor Amplifiers. (Kurokawa, K.)
Topics: amplifier, balanced, directional, amplifiers, couplers, component, coupling, transistor, ports,...
Bell System Technical Journal, 58: 3. March 1979 pp 721-728. DPCM With Forced Updating and Partial Correction of Transmission Errors. (Steele, R.; Goodman, D.J.; McGonegal, C.A.)
Topics: dpcm, error, pcm, block, correction, signal, samples, transmission, integrator, errors, input...
Bell System Technical Journal, 28: 4. October 1949 pp 753. Contributors to this Issue.
Topics: engaged, bell, electrical, magnetometers, engineering, airborne, microwave, telephone, electronic,...
Bell System Technical Journal, 12: 4. October 1933 pp 377-430. Loudness, Its Definition, Measurement and Calculation. (Fletcher, Harvey; Munson, W.A.)
Topics: loudness, tone, intensity, frequency, values, reference, tones, level, component, levels, intensity...
Bell System Technical Journal, 3: 2. April 1924 pp 259-267. A Reactance Theorem. (Foster, Ronald M.)
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Topics: reactance, impedance, resonant, network, formulas, networks, theorem, circuits, formula,...
Bell System Technical Journal, 48: 5. May-June 1969 pp 1405-1419. High-Power Single-Frequency Lasers Using Thin Metal Film Mode-Selection Filters. (Smith, Peter W.; Schneider, M.V.; Danielmeyer, Hans G.)
Topics: laser, film, mode, output, thin, nichrome, reflectance, metal, argon, yag, argon ion, system...
Bell System Technical Journal, 6: 3. July 1927 pp 495-545. Propagation of Periodic Currents Over a System Of Parallel Wires. (Carson, John R.; Hoyt, Ray S.)
Topics: impressed, electromotive, currents, wires, wire, equations, propagation, axial, force, electric,...
Bell System Technical Journal, 35: 5. September 1956 pp 991-1018. Electronics in Telephone Switching Systems. (Joel, A.E.)
Topics: switching, memory, electronic, electromechanical, telephone, electronics, devices, systems,...
Bell System Technical Journal, 14: 3. July 1935 pp 388-412. Acoustical Instruments. (Wente, E.C.)
Topics: sound, frequency, instrument, microphone, velocity, frequencies, acoustical, instruments, pressure,...
Bell System Technical Journal, 18: 1. January 1939 pp 76-118. Crossbar Dial Telephone Switching System. (Scudder, F.J.; Reynolds, J.N.)
Topics: crossbar, subscriber, sender, terminating, switch, incoming, marker, link, trunk, switches,...
Bell System Technical Journal, 35: 4. July 1956 pp 813-840. The Design of Tetrode Transistor Amplifiers. (Linvill, J.G.; Schimpf, L.G.)
Topics: transistor, impedance, gain, power, tetrode, input, amplifiers, amplifier, output, load, input...