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81.
用聚丙烯酰胺凝胶柱状电泳测定滑源苦荞、蒙87、大黑三棱、83—230、辽源一73和美国甜荞六种荞麦的过氧化物酶同工酶,结果表明:其酶谱带依次为五、五、三、三、三、二条,平均相对迁移率分别为0.310、0.289、0.297、0.276、0.288和0.380.据此.可得出:美国甜荞与前五种荞麦的地理起源和亲缘关系较远,而前五种亲缘关系较近,但又确有遗传差异.在抗病能力上.83—230>辽源—73>蒙—87>大黑三棱>滑源苦荞>美国甜荞.在抗寒能力上,滑源苦荞和蒙—87最耐寒,大黑三棱、83—230和辽源—73的耐寒性稍弱,而美国甜荞的耐寒力最差. 相似文献
82.
In the present study we examined the effects of token reinforcement on the convergent control of immediate and temporally removed verbal stimuli over the verbal behavior of three school-age children with autism who showed specific deficits in intraverbal responding. Throughout the study, participants were systematically introduced to a series of visitors to a university-based autism center, and subsequently probed for information about the visitor they had most recently met. Results show that contingent token reinforcement was effective at establishing control by temporally removed verbal stimuli. 相似文献
83.
Alex Cockain 《Disability & Society》2016,31(4):535-552
This article focuses on a filmic portrayal of issues relating to autism in a Chinese context, using this as a prism through which to consider how meanings associated with disability in general, and the autistic spectrum in particular, are produced. Instead of perpetuating a reductive positive/negative approach to representation, the article focuses on the fluid and dynamic ways in which author and audience co-produce texts relating to disability in ways which are invariably influenced by, and reproducing of, specific socio-cultural and discursive circumstances. Meaning-making in relation to disability is, however, ongoing and there is potential to realize disability differently. 相似文献
84.
Laurie Drabble Sue Thomas Lisa O’Connor Sarah C. M. Roberts 《Journal of social work practice in the addictions》2014,14(2):191-206
This article describes U.S. state policies related to alcohol use during pregnancy, using data from the National Institute on Alcohol Abuse and Alcoholism Alcohol Policy Information System. Specifically, this study examines trends in policies enacted by states over time and types of policies enacted across states in the United States, with a focus on whether laws were supportive or punitive toward women. Findings revealed substantial variability in characteristics of policies (19 primarily supportive, 12 primarily punitive, 12 with a mixed approach, and 8 with no policies). Findings underscore the need to examine possible consequences of policies, especially of punitive policies and “mixed” approaches. 相似文献
85.
《The Senses and Society》2013,8(3):322-338
ABSTRACTIn music production, “monitoring” refers traditionally to audile strategies intended to reveal the “true” sound of mediated audio. Here, it is expanded to include new, digital technologies intended to better know and control the record-object beyond what listening and listening technologies allow. Surveying traditional, contemporary, and emerging tools of record production and distribution, this essay addresses three types of monitoring: audio, visual, and data.In sum, monitoring entails the supplementation and subversion of the ear through protocols promising to surmount the biases and distortions of audio media. Key technologies include reference speakers, room correction systems, digital audio workstations, open mixes, pre-sets, social networking sites, and automatic music information retrieval. Situating these within a “techoustemology” of monitoring, the central argument is that many innovations in digital audio are non-auditory and, therefore, displace sound and listening as the central means of producing relevant knowledge about music mediated in the digital age. 相似文献
86.
Meng-Ning Lyu Qing-Shan Yang Na Yang Siu-Seong Law 《Journal of applied statistics》2016,43(5):827-846
A wooden historic building located in Tibet, China, experienced structural damage when subjected to tourists visit. This kind of ancient building attends to too many visitors every day because heritage sites never fail to attract tourists. There should be a balance between accepting the visitors and the protection of historic buildings considering the importance of the cultural relics. In this paper, the singular spectrum analysis (SSA) is used for forecasting the number of tourist for the building management to exercise maintenance measures to the structure. The analyzed results can be used to control the tourist flow to avoid excessive pedestrian loading on the structure. The relationship between the measured acceleration from the structure and the tourist number is firstly studied. The root-mean-square (RMS) value of the measured acceleration in the passage route of the tourist is selected for forecasting future tourist number. The forecasting results from different methods are compared. The SSA is found slightly outperforms the autoregressive integrated moving average model (ARIMA), the X-11-ARIMA model and the cubic spline extrapolation in terms of the RMS error, mean absolute error and mean absolute percentage error for long-term prediction, whereas the opposite is observed for short-term forecasting. 相似文献
87.
There are two main parameters in Singular Spectrum Analysis (SSA). The aim of this study is to determine whether the optimal values of these parameters are different for reconstruction and forecasting stages, and if those are worth the extra computational effort and time which they require. Here, we evaluate these issues using simulation study. 相似文献
88.
王利彬 《湖北民族学院学报(哲学社会科学版)》1998,(6)
给出了λ0∈C为σ(A)的孤立点的一个充要条件,并讨论了0为紧算子的谱的孤立点及其预解算子的极点问题. 相似文献
89.
Katie Alexandra Gibson 《Disability & Society》2014,29(4):568-582
This study seeks to identify understandings and narratives around autism spectrum disorder (ASD) through the application of video interaction guidance (VIG). In adopting a social constructionist approach, the case study used a person-centred model to explore a parent’s experiences and emerging narratives of ASD through the lens of VIG. Findings of the current study suggest that VIG offers an effective tool for in-depth exploration of complex, multi-storied understandings of ASD and the perceived parental role. The intervention was perceived to promote greater awareness of the child’s communication skills, beyond the ‘common’ understandings of ASD, by providing a novel outsider perspective on interactions. The intervention also promoted parental efficacy through recognition of parenting skills in supporting the development of strength-based narratives. VIG was seen to provide a platform for an exploration of existing narratives and the construction of new, preferred realities. 相似文献
90.
用HF/STO-3G方法优化了(AgCl)n(n≤5)团簇结构,并计算了能隙、电离势、电荷布局数、偶极钜、(AgCl)2和(AgCl)3的红外光谱。结果表明:(AgCl)3结构最稳定;平均结合能随着尺寸增大趋于平缓;(AgCl)n团簇具有很强的绝缘性;结构对称性越高,电荷布局数越均匀,偶极钜越小;最强的(AgCl)2和(AgCl)3的红外光谱线分别位于142cm-1和232cm-1处。 相似文献