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24篇 您的检索式:作者名="Krichbaum"
    题名 作者 年代 出处 被引量
1Translation and equivalence:the profile of mood states short form in English and chinese显示文摘CHEN K M SNYDER M KRICHBAUM K 2002International Journal of Nursing Studies2002,39,6:1
2Exploring the con-nection between self-efficacy and effective diabetes self-management 显示文摘Krichbaum K Aarestad V Buethe M 2003Diabetes Educ2003,29,4:1
3Translation and equivalence : the Profile of Mood States Short Form in English and Chinese显示文摘Chen KM Snyder M Krichbaum K 2002Int J Nurs Stud2002,39,6:1
4Exploring the connec-tion between self - efficacy and effective diabetes self -management显示文摘Krichbaum K Aarestad V Buethe M 2003Diabetes Educ2003,29,4:1
5Translation and equivalence: the Profile of Mood States Short Form in English and Chinese显示文摘Kuei-Min Chen Mariah Snyder Kathleen Krichbaum 2002International Journal of Nursing Studies2002,,6:1
6Howto screen for depression and emotional problems in patients with diabetes:comparison of screening characteristics of depression questionnaires,measurement of diabetes-specific emotional problems and standard clinical assessment显示文摘Hermanns N Kulzer B Krichbaum M 2006Diabetologia2006,49,3:1
7Exploring the connec-tion between self - efficacy and effective diabetes self -management显示文摘Krichbaum K Aarestad V Buethe M 2003Diabetes Educ2003,29,4:1
8Multifrequency polarization variations in 0917+624显示文摘S.J. Qian A. Kraus T.P. Krichbaum A. Witzel J.A. Zensus 2001Astrophysics and Space Science (-)2001,,1:1
9A Possible Periodicity in the Radio Light Curves of 3C 454.3显示文摘During the period 1966.5–2006.2 the 15GHz and 8GHz light curves of 3C 454.3 (z = 0.859) show a quasi-periodicity of ~12.8 yr (~6.9 yr in the rest frame of the source) with a double-bump structure. This periodic behaviour is interpreted in terms of a rotating double-jet model in which the two jets are created from the black holes of a binary system and rotating with the period of the orbital motion. The periodic variations in the radio fluxes of 3C 454.3 are suggested to be mainly due to the lighthouse effects (or the variation in Doppler boosting) of the precessing jets caused by the orbital motion. In addition, variations in the rate of mass accreting onto the black holes may be also involved.Shan-Jie Qian N. A. Kudryavtseva S. Britzen T. E Krichbaum Long Gao A. Witzel J. A. Zensus M. E Aller H. D. Aller Xi-Zhen Zhang 2007Chinese Journal of Astronomy and Astrophysics2007,7,3:1
10The Interplay of Institution and Family Caregiving : Relations be- tween Patient Hassles, Nursing Home Hassles and Caregiv- ers' Burnout 显示文摘Almberg B Grafstrom M Krichbaum K Winblad B 2000International Journal of Geriatric Psychia- try2000,,15:1
11Exploring the connection between self - efficacy and effective diabetes management 显示文摘Krichbaum K Aarestad V Buethe M 2003Diabetes Education2003,29,4:1
12Exploring the connection be- tween self - efficacy and effective diabetes self - management 显示文摘Krichbaum K Aarestad V Buethe M 2003Diabetes Educ2003,29,4:1
13A global 86 GHz VLBI survey of compact radio sources 显示文摘Lee S-S Lobanov A P Krichbaum T P etal 2008A stronomlcal Journal2008,136,1:1
14The jets of quasar 1928+738:superluminal motion and largescale structure显示文摘Hummel C A Schalinski C J Krichbaum T P 1992A&A1992,257,:1
15Clinical use of tai chi in elderly populations 显示文摘Chen KM Snyder M Krichbaum K 2001Geriatr Nurs2001,22,4:1
16215 GHz VLBI observations of bright active galactic nuclei 显示文摘Krichbaum T P Graham D A Grove A 1997Astronomy and Astrophysics1997,323,:1
17VLB1 observations of the galactic center source SGR A at 86 GHz and 215 GHz 显示文摘Krichbaum T P Graham D A Witzel A 1998Astronomy and Astrophysics1998,335,:1
18Refractive Focusing by Interstellar Clouds and the Rapid Polarization Angle Swing in QSO 1150+812显示文摘A very rapid polarization position angle swing of~180°(with a time scale of~6 hours)observed at 2cm in QSO 1150+812(z=1.25)was reported by Kochenov & Gabuzda.This very rare event is difficult to explain.We found a pos- sible interpretation in the framework of a source model consisting of three polarized components,in which two compact polarized components are nearly simultaneously occulted by an interstellar cloud,with consequent focusing-defocusing effects.A spe- cific plasma-lens model is proposed which can reasonably fit the polarized flux density curve with results derived for the two lensed components.Some physical parameters of the plasma-lens and the source components are estimated.The two compact po- larized components are estimated to have brightness temperatures of~6×10^(12)K. Thus a bulk relativistic motion with a Lorentz factor less than 10 is required to meet the inverse-Compton limit.Shan-Jie Qian T. P. Krichbaum Xi-Zhen Zhang L. Fuhrmann G. Cimò A. Kraus T. Beckert S. Britzen A. Witzel J.A. Zensus 2006Chinese Journal of Astronomy and Astrophysics2006,6,1:0
19Periodicity of the ejection of superluminal components in 3C345显示文摘The search for periodic behavior in Blazars has been an important subject, which is helpful for providing significant clues to the structure and physical processes of their central energy engine. A binary black hole system has recently been suggested for causing precession of relativistic jets and rotation of the ejection position angle of VLBI knots in superluminal sources. It has been suggested that in QSO 3C345, the ejection direction of the superluminal knots rotates due to the precession of the central engine and thus the ejection position angle of the successive knots shows a periodic behavior. Some authors argue for a period of precession being ~5.6 yr (Abraham & Caproni), ~8–10 yr (Klare et al.) and ~9.5 yr (Lobanov & Roland). Applying the helical model proposed by Qian et al. and selecting appropriate parameters to fit the initial trajectories (within 0.3 mas) of all the components (C4 to C10), we derive the relation between the ejection position angle of the components and their precession phase, and thus find a 6.9-year precession period (4.3 yr in the source frame), which can fit the ejection position angle of all these superluminal knots well. Since the VLBI observations have covered more than two precession periods, confirmation in one or more future periods would be important. In addition, we emphasize that the initial parts of the trajectories of these knots can be fitted by a common helical pattern (channel) through a precessing of its initial phase. This scenario (or helical precessing model) is different from the usual ballistic precessing model in which the individual superluminal knots move along straight-lines after ejection (Tateyama & Kingham).Shan-Jie Qian A. Witzel J. A. Zensus T. R Krichbaum S. Britzen Xi-Zhen Zhang 2009Chinese Journal of Astronomy and Astrophysics2009,9,2:0
203C345 VLBI核心的可能的视超光速运动显示文摘对类星体3C345的最新VLBI观测表明,节点C_6和C_7在向西北方向作视运动,这与节点C_4在1981—1984期间的视运动大致上平行.观测到的节点C_6和节点C_7的这种视运动是与钱善瑎所提出的'核心运动模型'所作出的预测的结果相符合的.本文利用现有关于3C345的所有VLBI观测数据,用比较严格的方法,定出了3C345的VLBI核心的南北方向视运动曲线和各个节点的视运动所沿的共同轨道的形式.结果表明,3C345的VLBI核心的南北方向视运动是振荡式的(见图4),导出的最大视运动速度为(0.10—0.15)mas/yr(即2c或3c,H_0=100公里·秒^(-1)·百万秒差距^(-1)).在1993年之前,对节点C_6和节点C_7的视轨道的VLBI监测,对于检验这个模型具有决定性的意义.非常希望对VLBI核心用VLBI相位参考技术来进行视运动的直接测定.钱善瑎 Krichbaum T.P.Witzel A. Quirrenbach A4. Zensus J.A. 1992天文学报1992,33,4:0
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