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排序方式: 共有380条查询结果,搜索用时 15 毫秒
61.
利用一种带相位因子的经典屏蔽Coulomb势,采用经典分析方法对反氢原子的能级和光谱给出了预言性的描述,结果发现其能级与光谱同氢原子有较大区别。在反氢原子中主量子数n小于1的分数值且正电子由基态跃迁到激发态时才产生光谱,与氢原子发光机制正好相反。 相似文献
62.
本文将谱域导纳法推广应用于各向异性介质基片微带,通过详细的理论分析,导出了各向异性等效传输线的特性导纳公式,并考虑了导带厚度的影响,建立了各向异性介质基片平面传输线传播常数色散特性的计算机程序。用本文推导的结果进行数值计算,在2-18GHz内求得的蓝宝石微带色散曲线与文献[1]的结果吻合得很好。此外,本方法直接、简明、且计算量小、适用于各类微波平面传输线的分析。因而,其具有较大的工程实用价值。 相似文献
63.
ABSTRACTResearch involving children, deemed to have difficulties with conventional means of communication, can perpetuate reductive forms of representation of children’s knowledges and experiences. This article focuses on the possibilities and opportunities that visual and creative methods can offer to researching with children. Children advance their views in and through spontaneous and concrete forms of participation. Autonomy in aesthetic acts is central to this methodology; to explore practices that produce and reproduce presuppositions deriving from societal attitudes affecting research with children, their agency and self-presentation. This cross-cultural study was conducted in Central Italy and North West England: children contributed their perspectives and experiences through participation in a series of creative encounters resulting in aesthetic and embodied outcomes of sociological and educational significance. The study contributes to the debate on children’s autonomy and the value and quality of participation through artistic practice. Examples from the corpus of data, which includes a series of artefacts and over 900 photographs from each geo-cultural context, are presented. The study shows that it is possible to harmonise power imbalances in spaces of creative freedom, in research and education, where children’s choices and agency are respected. 相似文献
64.
Jazlyn McGuinty Alain Carlson Angela Li John Nelson Michael Borges 《Australian and New Zealand Journal of Family Therapy》2023,44(3):288-301
A single-session consultation model for low-needs youth on the autism spectrum is presented with the mental health concern of emotional self-regulation, a common issue in family psychotherapy. This research is contextualised within the growing field of short-term therapy as it intersects the growing demand to therapeutically address clients on the autism spectrum. The treatment intervention is delineated through five sequential phases within the walk-in clinic setting for the practitioner clinician. A rationale, overview, and instruction for the practitioner clinician utilising this novel model is provided through a case study format. By using a more structured and integrated approach to treatment, organised through an externalised metaphor, it is suggested that the current model will be more effective for this specific clinical population. Additionally, a case illustration is provided that scaffolds the treatment model, which includes table formats and pictures. The case study illustrates the self-regulation map metaphor visually and interactively linking client challenges, strategies, and motivations simultaneously on multiple electronic devices in session. Relevant works were selected to explore the effectiveness of single-session consultation models for those presenting on the autism spectrum. Treatment interventions for specific clinical populations are recommended, especially within walk-in clinic therapy. This clinical research introduces a paradigm shift towards therapeutically addressing emotional self-regulation with low-needs youth on the spectrum through virtual, interactive technology. 相似文献
65.
包清文 《内蒙古民族大学学报(社会科学版)》2010,36(3):119-120
利用现有的竹笛练习谱例材料和演奏法及专业音乐录音棚里录下来的竹笛演奏采样文件(主要是音频效果图)来进行对比和分析,来说明和解释几种技巧练习的区别,以及在练习过程中应注意的问题、几种练习的效果对音乐作品带来的作用和重要性。 相似文献
66.
Barlow Kathryn E. Tiger Jeffrey H. Slocum Sarah K. Miller Sarah J. 《The Analysis of verbal behavior》2013,29(1):59-69
Therapists and educators frequently teach alternative-communication systems, such as picture exchanges or manual signs, to individuals with developmental disabilities who present with expressive language deficits. Michael (1985) recommended a taxonomy for alternative communication systems that differentiated between selection-based systems in which each response is topographically identical (e.g., card selection and exchange systems) and topography-based systems in which each response is topographically distinct (e.g., signed language). We compared the efficiency of training picture exchanges and signs with 3 participants who presented with severe language deficits; all participants acquired the picture-exchange responses more readily. 相似文献
67.
Oren Shtayermman PhD 《Journal Of Human Behavior In The Social Environment》2013,23(3):301-328
ABSTRACT The purpose of this study was to examine the level of suicidal ideation and comorbid disorders (major depressive disorder, generalized anxiety disorder) among adolescents and young adults with diagnosed Asperger's syndrome (AS). A cross-sectional study using a self-administrated mail questionnaire and a Web-based questionnaire were used. Two samples were selected for this study. The first sample used snowball sampling, starting with parents of adolescents and young adults with diagnosed AS who participated in a qualitative study conducted in 2002. The second sample consisted of a volunteer sample of parents who visited Web sites for parents and individuals with diagnosed autism spectrum disorder. The sample included 10 adolescents and young adults with diagnosed AS. Fifty percent of the sample had a clinically significant level of suicidal ideation, 20% met criteria for a diagnosis of major depressive disorder, and 30% met criteria for generalized anxiety disorder. 相似文献
68.
69.
通过分析左定与右定问题的关系,应用谱曲线和高阶右定问题的谱,研究了一类高阶左定问题谱的特性及谱对给定参数的可微性. 相似文献
70.
快速傅里叶变换(FFT)算法在应用中速度快,精度较低,而MUSIC法精度高,实时性差。该文通过分析两者联合谐波频率估计的可能性,提出利用FFT算法对谐波频率进行预估计,用二分法将频域划分为有限个细小的频率区间,根据可能的有效频率选取有效区间,再通过MUSIC方法在有限的搜索区间进行频率细化,并在细化的过程中采用趋向谱幅值增大的单向搜索。通过仿真研究,该方法能有效提高信号的处理速度,加强MUSIC算法的应用。 相似文献