1,721,223 research outputs found
Oh Min!
No full textGift of Dr. Mary Jane Esplen.By the writer of "Barney Google" [note]Piano vocal [instrumentation]In the papers you have read the capers of a certain married gink [first line]Oh! Min, Oh! Min come down to your child Oh! Min Oh! Min [first line of chorus]E flat major [key]Popular song [form/genre][illustration]Politzer [engraver]Publisher's advertisement on front inside cover & back cover [note
Oh! Min
No full textFirst Line: In the papers you have read the capers of a certain married ginkFirst Line of Chorus: Oh! Min, Oh! Min come down to your childKey: E Flat Majo
Oh! Min!
No full textFirst Line: Min was Andy's little wife, never quarreled in all her lifeFirst Line of Chorus: Oh! Min! What's the mater Min!Key: G Majo
Oh! Min!
No full textGift of Dr. Mary Jane Esplen.Piano vocal [instrumentation]G major [key]Marcia [tempo]Popular song ; novelty [form/genre]Man [illustration]Dedicated to Mrs. Sidney Smith. "Oh! Min" [dedication]Sidney Smith [engraver]High quality photocopy [note
Effects of alloying elements on the thermoelectric properties of
No full text학위논문(박사) - 한국과학기술원 : 신소재공학과, 2006.2, [ xvi, 139 p. ]한국과학기술원 : 신소재공학과
Geiger-mode avalanche photodiode를 이용하는 3차원 영상 레이저 레이더 시스템 개발 및 분석
No full text학위논문(박사) - 한국과학기술원 : 물리학과, 2011.2, [ iii, 108 p. ]Direct-detection laser radar system using Geiger-mode avalanche photodiode (GAPD) has been inves-tigated in order to acquire three-dimensional images of objects at a long distance (more than 100m). Due to extremely high sensitivity of the GAPD, the characteristics of a laser radar system using GAPD are not only advantageous in terms of ranging a distant object but also in detecting a target screened by a sparse obstacle located in front of it. Both laser radar systems using a single-pixel GAPD and 1x8-pixel GAPD focal plane array as detectors have been built up and analyzed. The theoretical model of the laser radar system using GAPD has been also established with Poisson statistics and demonstrated experimentally.
Passively Q-switched microchip laser has been used as a laser source; a compact peripheral compo-nent interconnect system, which includes a time-to-digital converter (TDC), has been set up for fast signal processing. With both the GAPD having short dead-time (45ns) and the TDC functioning multi-stop acquisition, the system operates in a multi-hit mode. The software for the three-dimensional visualization and an algorithm for the removal of noise have been developed. The comparisons between single- and multi-hit modes were carried with the theoretical analysis of target-detection probability and three-dimensional images taken in both modes.
It was shown that the single-shot precision of the system is ~ 10cm (σ) and the precision is improved by increasing the number of laser pulses to be averaged so that the precision of ~1cm (σ) was acquired with more than 150 laser pulses scattered from the target. The accuracy of the system has been measured to be 12cm when the energy of the emitted laser pulse varied with a factor of 7; the technique for the reduction of range walk error was proposed and demonstrated experimentally. Three-dimensional images taken by the laser radar systems are shown. For better transverse spatial resolution in the case of using GAP...한국과학기술원 : 물리학과
전기 광학 폴리머 도파관을 사용하는 파장 무민감성 수동 편광 변환기
No full textThe present invention relates to a wavelength insensitive passive polarization converter which can rotate the direction of optic axis of waveguide by employing poled electro-optic polymer waveguides and a method for controlling the optic axis direction of the poled polymer waveguides. A passive polarization converter of present invention is equipped with poling electrodes at top and bottom of a planar waveguide consisting of three layers of electro-optic polymer, and it comprises: a polarizer in which poling-induced optic axis aligned horizontally; a polarization rotator in which the azimuth angle of the optic axis is slowly changed along the propagation direction from horizontal to vertical direction; and, an analyzer in which poling-induced optic axis aligned vertically. The polarization converter of the invention which contains no periodic structures, is much less sensitive to wavelength, channel dimensions and polarizing structures in principle and may be more easily fabricated by the design of the poling electrode structure, as compared with prior art devices containing such structures
Heat-fueled enzymatic cascade for selective oxyfunctionalization of hydrocarbons
No full textHeat is a fundamental feedstock, where more than 80% of global energy comes from fossil-based heating process. However, it is mostly wasted due to a lack of proper techniques of utilizing the low-quality waste heat (<100 °C). Here we report thermoelectrobiocatalytic chemical conversion systems for heat-fueled, enzyme-catalyzed oxyfunctionalization reactions. Thermoelectric bismuth telluride (Bi2Te3) directly converts low-temperature waste heat into chemical energy in the form of H2O2 near room temperature. The streamlined reaction scheme (e.g., water, heat, enzyme, and thermoelectric material) promotes enantio- and chemo-selective hydroxylation and epoxidation of representative substrates (e.g., ethylbenzene, propylbenzene, tetralin, cyclohexane, cis-β-methylstyrene), achieving a maximum total turnover number of rAaeUPO (TTNrAaeUPO) over 32000. Direct conversion of vehicle exhaust heat into the enantiopure enzymatic product with a rate of 231.4 μM h−1 during urban driving envisions the practical feasibility of thermoelectrobiocatalysis.BT/Biocatalysi
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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