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  • Articles  (295)
  • Electrical Engineering, Measurement and Control Technology  (175)
  • Architecture, Civil Engineering, Surveying  (120)
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  • Articles  (295)
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  • 1
    Electronic Resource
    Electronic Resource
    Suppression of interference effects in spectroscopy using an integrating sphere (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 1369-1371 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Interference effects occur in the optical spectroscopy of thin film samples, and they can obliterate absorption spectra, especially if these are weak. A solution to this problem, originally proposed in 1976, is to place the sample inside an integrating sphere in the Edwards configuration so as to collect both reflected and transmitted light simultaneously. Surprisingly, the subsequent published literature on this technique is virtually nonexistent, despite its simplicity and effectiveness. This paper describes its use to measure absorption dips as weak as 2×10−4 in thin film samples. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147944
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  • 2
    Electronic Resource
    Electronic Resource
    A new apparatus for surface x-ray absorption and diffraction studies using synchrotron radiation (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 5477-5485 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new apparatus for structural studies of surfaces and buried interfaces using synchrotron radiation was built and tested at the 27-pole wiggler station BL13B of the Photon Factory. The apparatus was designed to combine x-ray absorption fine structure (XAFS), x-ray standing wave (XSW), and surface x-ray diffraction techniques in the same ultrahigh vacuum (UHV) chamber. The apparatus features a seven-element Si(Li) solid-state detector array for a fluorescence yield measurement and a high precision eight-axis goniometer in the UHV chamber with a base pressure of 1×10−10 Torr. For the same sample mounted on the in-vacuum goniometer, vertically or horizontally polarized surface-sensitive XAFS, surface x-ray diffraction, and XSW can be measured. As a performance test, the structure of Ge overlayers on Si(001) was studied by polarized surface-sensitive XAFS. The results show that the apparatus can probe the local structure of adatoms with ∼0.1 monolayer sensitivity. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146072
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  • 3
    Electronic Resource
    Electronic Resource
    CAMAC module for high-speed synchronous transfer of 32-bit binary data (1988)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 59 (1988), S. 1232-1236 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: In this work we report the design of a CAMAC module for the synchronous transfer of 32-bit binary data to an external device at rates up to 5 MHz. The module is capable of handling a data vector of up to 8192 words. The length and contents of the data vector are fully programmable by a sequence of simple calls to the CAMAC crate controller. The update rate, from 2 to 61438 cycles of an external clock, may be programmed similarly. The external clock frequency is limited to 10 MHz by the programmable interval timer employed in the circuitry. The use of this module to control a frequency synthesizer used in Fourier transform mass spectrometry is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139703
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  • 4
    Electronic Resource
    Electronic Resource
    CAMERA PLATE-REDUCTION BY MEANS OF STAR-FIELD REFERENCE (1960)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 3 (1960), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The theory is developed for determining the direction of a point-object by photographing it on the same plate as a star field and using the stars as reference points. A minimum of three reference stars is necessary for determining the camera orientation and with more than three stars a least-squares solution is possible.The method of analysis involves the solution of simultaneous equations for nine “plate constants”. Once the plate constants have been found, the direction of an object may readily be obtained from the coordinates of its image on the plate. The six elements of orientation of the camera may also readily be found from the plate constants. Part of the theory has been programmed for the Pegasus electronic computer. An appendix gives a convenient method of applying atmospheric refraction corrections to direction cosines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1960.tb01294.x
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  • 5
    Electronic Resource
    Electronic Resource
    DETERMINATION OF POSITION OF A POINT-OBJECT BY TRIANGULATION IN RECTANGULAR COORDINATES (1960)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 3 (1960), S. 0 
    Details
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: A theory is presented for determining the position of an aerial point-object from observations of its direction from several ground-stations. The criterion under which the position coordinates are determined is that the sum of the squares of the perpendicular distances of the object from the various observed directions to it should be a minimum. The statistical distribution of the observations is considered, and the theory developed for estimating the standard deviations of the object's coordinates. The relevant equations have been programmed for evaluation by the Pegasus electronic computer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1477-9730.1960.tb01297.x
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  • 6
    Electronic Resource
    Electronic Resource
    MODELED IMPACTS OF DEVELOPMENT TYPE ON RUNOFF VOLUME AND INFILTRATION PERFORMANCE (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 40 (2004), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : Development type has emerged as an important focal point for addressing a wide range of social, cultural, and environmental concerns related to urban growth. Low impact development techniques that rely heavily on infiltration practices are increasingly being used to manage storm water. In this study, four development types (conventional curvilinear, urban cluster, coving, and new urbanism) were modeled both with and without infiltration practices to determine their relative effects on urban runoff. Modeling was performed with a modified version of the Natural Resources Conservation Service (NRCS) runoff method that enables evaluation of infiltration practices. Model results indicate that urban cluster developments produce the smallest volume of runoff due to the large portion of land kept in a natural condition. Infiltration practices are most effective for small storms and in developments with Hydrologic Group A soils. Significant reductions in runoff can be achieved in all four development types if infiltration practices treat many impervious surfaces. As more infiltration practices are implemented, the differences in runoff among development types diminish. With a strategic combination of site layout and infiltration design, any development type can reduce hydrologic impacts, allowing developers to consider other factors, such as convenience, marketability, community needs, and aesthetics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.2004.tb01059.x
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  • 7
    Electronic Resource
    Electronic Resource
    Melling, Joseph: Housing, Social Policy and the State : London, Croom Helm, 1980 (1982)
    Cambridge : Cambridge University Press
    Urban history 9 (1982), S. 159-160 
    Details
    ISSN: 0963-9268
    Source: Cambridge Journals Digital Archives
    Topics: Architecture, Civil Engineering, Surveying , History , Sociology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0963926800006398
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  • 8
    Electronic Resource
    Electronic Resource
    Jones, G. W.; Norton, Alan: Political Leadership in Local Authorities : Birmingham, Institute of Local Government Studies, University of Birmingham, 1978 (1980)
    Cambridge : Cambridge University Press
    Urban history 7 (1980), S. 138-139 
    Details
    ISSN: 0963-9268
    Source: Cambridge Journals Digital Archives
    Topics: Architecture, Civil Engineering, Surveying , History , Sociology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S096392680000479X
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  • 9
    Electronic Resource
    Electronic Resource
    The development of a classification of travel-to-work areas
    Amsterdam : Elsevier
    Progress in Planning 34 (1990), S. 1-92 
    Details
    ISSN: 0305-9006
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0305-9006(90)90006-4
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  • 10
    Electronic Resource
    Electronic Resource
    Thick-film hybrid pH sensors
    Amsterdam : Elsevier
    Sensors and Actuators 11 (1987), S. 387-398 
    Details
    ISSN: 0250-6874
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0250-6874(87)80078-1
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