Tensor controlled-source audio-frequency magnetotellurics （CSAMT） can yield information about electric and magnetic fields owing to its multi-transmitter configuration compared with the common scalar CSAMT. The most...Tensor controlled-source audio-frequency magnetotellurics （CSAMT） can yield information about electric and magnetic fields owing to its multi-transmitter configuration compared with the common scalar CSAMT. The most current theories, numerical simulations, and inversion of tensor CSAMT are based on far-field measurements and the assumption that underground media have isotropic resistivity. We adopt a three-dimensional （3D） staggered-grid finite difference numerical simulation method to analyze the resistivity in axial anisotropic and isotropic media. We further adopt the limited-memory Broyden- Fletcher-Goldfarb-Shanno （LBFGS） method to perform 3D tensor CSAMT axial anisotropic inversion. The inversion results suggest that when the underground structure is anisotropic, the isotropic inversion will introduce errors to the interpretation.展开更多
The present paper, in spite of its quite scandalous title, is just a serious reflection, from the inside, on a certain part of the poetry of a contemporary Romanian poet （the author of the paper himself）, in the lin...The present paper, in spite of its quite scandalous title, is just a serious reflection, from the inside, on a certain part of the poetry of a contemporary Romanian poet （the author of the paper himself）, in the line of a tradition starting with Poe＇s Philosophy of Composition （1846）, passing through the avant-garde and ending, for the moment, in Andy Warhol＇s self-promotion. The analysis from the inside and the honest reflection of the interplay between poetry, music, and contemporary popular culture might lead to a better understanding of the poetry made at the end of the 20th century--beginning of the 21 st century. The corpus analyzed is a series of poems written between 1994 and the present day, under the generic title of ditty, published in several books （between which a bilingual pamphlet, Ditties/Cfntecelce）, 1998）, and the paper speaks about their genesis, their poetics, and hopes to help the process of their interpretation, as well as to bring a new interpretation of the poetry/music relationship展开更多
In historically, culturally, and technically variable media constellations, various forms of media activism, media education, and learning design have been developed. As to media activism, there is a broad spectrum, i...In historically, culturally, and technically variable media constellations, various forms of media activism, media education, and learning design have been developed. As to media activism, there is a broad spectrum, including graffiti, radio activism, community media, visual activism, tactical media （Garcia ＆ Lovink, 1997）, and more recently, media interventions questioning the workings of biopower （Da Costa ＆ Philip, 2008）. On the other hand, debates on media competency and media literacy have been going on for a few decades. Although media have also been conceptualized as media of resistance or critique in informal contexts as well as in formal education, lively exchanges of concepts and ideas are comparatively seldom in respective traditions. The paper aims at exploring challenges for media education and interfaces between both fields.展开更多
Experiments were carried out to eliminate the screech tone generated from a supersonic jet. Compressed air was passed through a circular convergent nozzle preceded by a straight tube of same diameter. In order to redu...Experiments were carried out to eliminate the screech tone generated from a supersonic jet. Compressed air was passed through a circular convergent nozzle preceded by a straight tube of same diameter. In order to reduce the jet screech a spherical reflector was used and placed at the nozzle exit. The placement of the spherical reflector at the nozzle exit controlled the location of the image source as well as minimized the sound pressure at the nozzle exit. The weak sound pressure did not excite the unstable disturbance at the exit. Thus the loop of the feedback mechanism could not be accomplished and the jet screech was eliminated. The technique of screech reduction with a flat plate was also examined and compared with the present method. A good and effective performance in canceling the screech component by the new method was found by the investigation. Experimental results indicate that the new system suppresses not only the screech tones but also the broadband noise components and reduces the overall noise of the jet flow. The spherical reflector was found very effective in reducing overall sound pressure level in the upstream region of the nozzle compared to a flat plate. The proposed spherical reflector can, accordingly, protect the upstream noise propagation.展开更多
Using the complete lift on tangent bundles, the authors construct the complete lift on cotangent bundles of tensor fields with the aid of a musical isomorphism. In this new framework, the authors have a new intrepreta...Using the complete lift on tangent bundles, the authors construct the complete lift on cotangent bundles of tensor fields with the aid of a musical isomorphism. In this new framework, the authors have a new intrepretation of the complete lift of tensor fields on cotangent bundles.展开更多
Objective: To observe the clinical effect of electroacupuncture(EA)combined with tuina on acute lumbar sprain and lumbar muscle tone before and after treatment. Methods: A total of 130 acute lumbar sprain cases were r...Objective: To observe the clinical effect of electroacupuncture(EA)combined with tuina on acute lumbar sprain and lumbar muscle tone before and after treatment. Methods: A total of 130 acute lumbar sprain cases were randomly allocated into an observation group and a control group, 65 in each group. Cases in the observation group were treated with EA combined with tuina, whereas cases in the control group were treated with Diclofenac Sodium Dual Release Enteric-coated capsules. The muscle tones in two groups were tested before and after treatment. Results: The recovery rate and overall response rate in the observation group were 66.2% and 93.8% respectively, versus 56.9% and 87.7% in the control group, showing no between-group statistical significances(P>0.05). After treatment, the force-displacement area under curve(AUC) in both groups showed a significance difference(P<0.05). Conclusion: Both EA combined with tuina and aforementioned oral medication have remarkable effects for acute lumbar sprain, and the former can better improve the lumbar muscle tone in patients with acute lumbar sprain.展开更多
基金sponsored by National Natural Science Foundation of China(No.41374078)
文摘Tensor controlled-source audio-frequency magnetotellurics （CSAMT） can yield information about electric and magnetic fields owing to its multi-transmitter configuration compared with the common scalar CSAMT. The most current theories, numerical simulations, and inversion of tensor CSAMT are based on far-field measurements and the assumption that underground media have isotropic resistivity. We adopt a three-dimensional （3D） staggered-grid finite difference numerical simulation method to analyze the resistivity in axial anisotropic and isotropic media. We further adopt the limited-memory Broyden- Fletcher-Goldfarb-Shanno （LBFGS） method to perform 3D tensor CSAMT axial anisotropic inversion. The inversion results suggest that when the underground structure is anisotropic, the isotropic inversion will introduce errors to the interpretation.
文摘The present paper, in spite of its quite scandalous title, is just a serious reflection, from the inside, on a certain part of the poetry of a contemporary Romanian poet （the author of the paper himself）, in the line of a tradition starting with Poe＇s Philosophy of Composition （1846）, passing through the avant-garde and ending, for the moment, in Andy Warhol＇s self-promotion. The analysis from the inside and the honest reflection of the interplay between poetry, music, and contemporary popular culture might lead to a better understanding of the poetry made at the end of the 20th century--beginning of the 21 st century. The corpus analyzed is a series of poems written between 1994 and the present day, under the generic title of ditty, published in several books （between which a bilingual pamphlet, Ditties/Cfntecelce）, 1998）, and the paper speaks about their genesis, their poetics, and hopes to help the process of their interpretation, as well as to bring a new interpretation of the poetry/music relationship
文摘In historically, culturally, and technically variable media constellations, various forms of media activism, media education, and learning design have been developed. As to media activism, there is a broad spectrum, including graffiti, radio activism, community media, visual activism, tactical media （Garcia ＆ Lovink, 1997）, and more recently, media interventions questioning the workings of biopower （Da Costa ＆ Philip, 2008）. On the other hand, debates on media competency and media literacy have been going on for a few decades. Although media have also been conceptualized as media of resistance or critique in informal contexts as well as in formal education, lively exchanges of concepts and ideas are comparatively seldom in respective traditions. The paper aims at exploring challenges for media education and interfaces between both fields.
文摘Experiments were carried out to eliminate the screech tone generated from a supersonic jet. Compressed air was passed through a circular convergent nozzle preceded by a straight tube of same diameter. In order to reduce the jet screech a spherical reflector was used and placed at the nozzle exit. The placement of the spherical reflector at the nozzle exit controlled the location of the image source as well as minimized the sound pressure at the nozzle exit. The weak sound pressure did not excite the unstable disturbance at the exit. Thus the loop of the feedback mechanism could not be accomplished and the jet screech was eliminated. The technique of screech reduction with a flat plate was also examined and compared with the present method. A good and effective performance in canceling the screech component by the new method was found by the investigation. Experimental results indicate that the new system suppresses not only the screech tones but also the broadband noise components and reduces the overall noise of the jet flow. The spherical reflector was found very effective in reducing overall sound pressure level in the upstream region of the nozzle compared to a flat plate. The proposed spherical reflector can, accordingly, protect the upstream noise propagation.
基金supported by the Scientific and Technological Research Council of Turkey(No.112T111)
文摘Using the complete lift on tangent bundles, the authors construct the complete lift on cotangent bundles of tensor fields with the aid of a musical isomorphism. In this new framework, the authors have a new intrepretation of the complete lift of tensor fields on cotangent bundles.
基金supported by 2010 Special Project of ‘Modernization of Chinese Medicine'of Shanghai Science&Technology Committee(No.10DZ1974700) Scientific Research Project of Chinese Medicine of Shanghai Health Bureau(No.2010QL035A)
文摘Objective: To observe the clinical effect of electroacupuncture(EA)combined with tuina on acute lumbar sprain and lumbar muscle tone before and after treatment. Methods: A total of 130 acute lumbar sprain cases were randomly allocated into an observation group and a control group, 65 in each group. Cases in the observation group were treated with EA combined with tuina, whereas cases in the control group were treated with Diclofenac Sodium Dual Release Enteric-coated capsules. The muscle tones in two groups were tested before and after treatment. Results: The recovery rate and overall response rate in the observation group were 66.2% and 93.8% respectively, versus 56.9% and 87.7% in the control group, showing no between-group statistical significances(P>0.05). After treatment, the force-displacement area under curve(AUC) in both groups showed a significance difference(P<0.05). Conclusion: Both EA combined with tuina and aforementioned oral medication have remarkable effects for acute lumbar sprain, and the former can better improve the lumbar muscle tone in patients with acute lumbar sprain.
