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1.
利用初等微分学比较了单参数平均与对数和指数平均的几何组合,发现了使得双向不等式Jp（a,b）1/2-3)/2]和所有a,b>0且a≠b成立的p的最大值和q的最小值,其中Jp（a,b）,L（a,b）和I（a,b）分别表示a与b的p-次单参数平均、对数平均和指数平均.  相似文献   

2.
设(F)为定义在区域D内的一族亚纯函数,a(z)和b(z)为两个在D满足a(z)≠b(z)和a(z)≠b(k)(z)以及a(z)(≠)a'(z)的全纯函数,若对于任意的f∈(F),f(z)-a(z)的零点重级至少是k,f(z)和f(k)(z)分担a(z),且当f(z)=b(z)时,f(k)(z)=b(z),那么(F)在...  相似文献   

3.
谢德三《墨子虚词用法诠释》认为"而"作指示代词犹"此"、作系词犹"乃"、作准系词犹"如"、作副词犹"乃、才",并根据译义把"而"归为介词和连词。这些"而"的语法功能都是连接前后两个谓词性结构,是连词。《墨子虚词用法诠释》忽略了"而"的语法功能,用强赋实义、翻译的方法,对"而"做出的词性归类是值得商榷的。《墨子》中的"然而"大部分都不是凝固结构,"而后""而况""而已""而已矣"都是词与词的组合,《墨子虚词用法诠释》把它们都归为熟语也是有问题的。  相似文献   

4.
The uniqueness problem of entire functions sharing one small function was studied. By Picard’s Theorem, we proved that for two transcendental entire functions f (z) and g(z), a positive integer n≥9, and a(z) (not identically eaqual to zero) being a common small function related to f (z) and g(z), if f n(z)(f(z)-1)f′(z) and gn(z)(g(z)-1)g′(z) share a(z) CM, where CM is counting multiplicity, then g(z) ≡ f (z). This is an extended version of Fang and Hong’s theorem [ Fang ML, Hong W, A unicity theorem for entire functions concerning differential polynomials, Journal of Indian Pure Applied Mathematics, 2001, 32 (9): 1343-1348].  相似文献   

5.
The Differentiated Model of Giftedness and Talent (DMGT) presents the talent development process (P) as the transformation of outstanding natural abilities, or gifts (G), into outstanding systematically developed skills which define expertise, or talent (T) 3 in a particular occupational field. This developmental sequence constitutes the heart of the DMGT. Three types of catalysts help or hinder that process: (a) interpersonal (I) catalysts, like personal traits and self‐management processes; (b) environmental (E) catalysts, like socio‐demographic factors, psychological influences (e.g., from parents, teachers, or peers), or special talent development facilities and programs; and (c) chance (C). The DMGT includes a 5‐level metric‐based (MB) system to operationalize the prevalence of gifted or talented individuals, with a basic ‘top 10 per cent’ threshold for mild giftedness or talent, through successive 10 per cent cuts for moderate, high, exceptional and extreme levels. Complex interactions between the six components are surveyed. The text ends with a proposed answer to a fundamental question: ‘What factor(s) make(s) a difference, on average, between those who emerge among the talented and those who remain average?’  相似文献   

6.
This systems thinking model illustrates a common feedback loop by which people engage the moral world and continually reshape their moral sensibility. The model highlights seven processes that collectively form this feedback loop: beginning with (1) one’s current moral sensibility which shapes processes of (2) perception, (3) deliberation, (4) decision-making, (5) embodying action, (6) reflection on self-evaluation and other’s responses, and (7) consolidation into one’s moral sensibility of the lessons learned. Improvements on previous models of moral engagement include (1) recognizing moral sensibility as the grounding for moral engagement, (2) articulating a systems approach and (3) illustrating a feedback loop that brings the moral protagonist full-circle leaving her with a slightly changed moral sensibility with which to engage the next moral context.  相似文献   

7.
Imprinted polymers were prepared for selective removal of Cu（Ⅱ） ions from metal solutions. Three ion-imprinted polymers were synthesized with methacrylic acid （MAA）, acrylamide （AA） and N,N＇-methylenebisacrylamide （MBAA） respectively as the functional monomers, ethleneglycoldimethacrylate （EGDMA） as the cross-linking agent, 2,2＇- azobisisobutyronitrile （AIBN） as the initiator and Cu （Ⅱ） ion as the imprint ion. The template Cu （Ⅱ） ion was removed from the polymer by leaching with a liquid of a 1：1 volumetric ratio of HCl to ethylenediaminetetraacetic acid （EDTA）. The capacity and selectivity of Cu（Ⅱ） ion adsorption were investigated with the three imprinted polymers and their non-imprinted counterparts. The polymers have a maximum adsorption capacity at pH 7.0. The isotherm of their batch adsorption of Cu（Ⅱ） ions shows a Langmuir adsorption pattern. Imprinted polymers all have a much higher capacity and higher selectivity of Cu（Ⅱ） adsorption than nonimprinted ones. MAA polymer benefits the most from imprinting. Imprinted MAA polymer has the highest selectivity when used to rebind Cu （Ⅱ） ion from an aqueous solution in the presence of other metal ions. Ion imprinting can be a promising technique of preparing selective adsorbents to separate and preconcentrate metal in a medium of multiple competitive metal ions through solid phase extraction （SPE）.  相似文献   

8.
Abstract

This paper describes the use of a participatory action research model to teach undergraduate social work research and statistics. Strategies of the model include (1) integration with social work education, (2) policy analysis, (3) literature review, (4) collaboration with practitioners, (5) collaboration with the target population through qualitative research, (6) quantitative study, (7) ongoing social action efforts, and (8) evaluation. An example is used of a project addressing a community problem with increased domestic violence during recovery from natural disaster.  相似文献   

9.
利用初等微分学比较了对数平均与平方根平均和调和平方根平均的凸组合,发现了使得双向不等式aS(a,b)+(1-a)(H)(a,b)＜L(a,b)＜βS(a,b)+(1-β)(H)(a,b)对所有a,b＞0且a≠b成立的a的最大值和β的最小值,其中S(a,b)=√(a2,b2)/2,(H)(a,b)=√2ab√a2+b2和L(a,b)=(a-b)/(loga-logb)分别表示二个正数a与b的平方根平均、调和平方根平均和对数平均.  相似文献   

10.
This research effort presents (a) a model for viewing counseling theories and (b) data regarding the similarities and differences among selected counseling theorists on two dimensions: a process dimension and a goal dimension. Two instruments were used to tap the process and goal statements of selected theorists. Thirty-seven graduate students in two counseling theory classes completed the instruments, and their statement ratings were used to plot the selected theorists on the proposed model. Analysis of variance procedures were used to test differences among the theorists. The F ratios for both the process and goal statements were found to be significant at or beyond the .05 level. Theorist clusters were obtained by a post hoc probing process where the process clusters are as follows: (a) Williamson, Wolpe, Krumboltz; (b) Ellis, Thorne, Dreikurs, and Dollard and Miller; (c) Frankl, Alexander; (d) Rogers. The goal clusters are: (a) Wolpe, Krumboltz; (b) Williamson, Dollard and Miller; (c) Dreikurs, Thorne, Ellis, Alexander; (d) Rogers; (e) Frankl.  相似文献   

11.
The purpose of this study was twofold: (1) to design a system for constructing Likert attitude scales as supported by the sociopsychological and measurement literature, and (2) using the design to assemble a microcomputer attitude scale for inservice and preservice teachers (n = 281). The results of the study: (1) a 15-step flow chart for designing reliable and valid attitude scales, and (2) a 23-item microcomputer Likert attitude scale with the following characteristics: (a) coefficient alpha 0.89, (b) range of adjusted item-total correlations from 0.29 to 0.62, (c) range of interitem correlations from 0.04 to 0.60, (d) correlation of 0.20 with a mathematics attitude scale and 0.02 with a reading attitude scale, and (e) favorable factor analysis and emotional intensity data.  相似文献   

12.
The purpose of this study was to develop a richer understanding of teacher effectiveness through cross-cultural analyses of the practices and beliefs of selected China and US teachers who have received national awards for their teaching. This study was based upon a phenomenological design that used semi-structured interviews, classroom observations, and artifacts for data generation/collection. Sixteen China teachers and 16 US teachers participated in this study. This study revealed similarities and differences between US teachers and China teachers in their patterns of instructional practices and professional thinking. The major similarities found between them were (a) using a variety of instructional activities which spanned across different cognitive levels, (b) being opportunistic planners to maximize meaningful student learning, (c) having high student engagement, (d) presenting effective classroom management skills, and (e) maintaining a learning environment that was conducive to optimal learning. Primary differences between US and China teachers’ classrooms included the types of instructional activities used and their beliefs and practices in the areas of (a) instructional planning, (b) differentiation, (c) assessment, (d) classroom management, (e) relationships with students and parents, and (f) professional development.  相似文献   

13.
We examined immunization against learned helplessness in 36 dogs. The experiment consisted of five phases: (1) appetitive contingent training, (2) immunization training, (3) inescapable noise training, (4) recovery, and (5) an appetitive noncontingent test. There were six groups: (1) a group immunized by controllable and predictable noise, (2) a group immunized by controllable but unpredictable noise, (3) a group immunized by uncontrollable but predictable noise, (4) a group given uncontrollable and unpredictable noise during immunization training, (5) a group not submitted to any treatment during the immunization phase, followed by uncontrollable noise, and (6) a group not submitted to any treatment. The immunization effect was assessed by measuring the acquisition of an appetitive response when food was not contingent upon responding. Our results demonstrate that the immunization effect can be observed in a noncontingent appetitive context. The effects of escapable noises that ensure immunization against the motivational deficit and predictable noises that immunize against the associative deficit seem to be additive.  相似文献   

14.
The aim was the reconstruction of a school curriculum in reflective teaching situations within a co‐operative culture. Two working assumptions were considered: (a) teacher development was based on teacher thinking and (b) school organisation followed a co‐operative culture paradigm. The process features were: (a) university team consisted of external advisers; (b) school curriculum and classroom instruction were reviewed by school teachers; (c) case study as a research approach; (d) ethnographic techniques to collect data; (e) data analysis by a computer program; (f) teachers’ reflective cycle to reconstruct practice; and (g) teachers’ portfolios: narrative vignettes, etc. Findings showed: (a) a collaborative process school‐university; (b) teachers’ thinking and attitudinal change; (c) mobilisation of teachers’ talents and values to work together: (i) teacher dyads to reflect on teaching; (ii) advisers’ writing narrative vignettes; (Hi) collegial coaching; and (iv) curriculum materials designed by teachers. Two conclusions can be accepted: (a) teachers’ pedagogical practical knowledge showed diversity of their implicit theories to design action; and (b) teachers’ grounded theory confirmed that the educational action was based on a co‐operative and reflective culture.  相似文献   

15.
Multiple regression procedures are commonly used to investigate gender equity in faculty salary. However, a review of 19 case studies indicates that many of them fail to (a) adequately develop a regression model that examines the linear and nonlinear (i.e., interactive and curvilinear) relations between predictors and the criterion and (b) appropriately apply regression diagnostic statistics throughout salary model development. A seven-step process is presented as a comprehensive framework for testing allegations of gender discrimination in faculty salary. Steps include (a) identifying predictors of faculty salary, (b) identifying and establishing criteria for interpreting statistical tests and diagnostic procedures, (c) determining the criterion variable used in the salary model, (d) developing a salary model, (e) testing for gender discrimination in pay, (f) conducting diagnostic procedures to confirm the appropriateness of the final salary model, and (g) testing the assumptions of the regression model. An application of this model is presented using a case study (N = 725 faculty).  相似文献   

16.
This article focuses on school violence in the UnitedStates, kindergarten (k) through 12th grade, andit addresses the following topics: (a) a briefbackground of school violence in the USA, (b) etiologyand consequences of school violence, (c) preventionprograms and efforts, (d) preventive counseling andconsultation, (e) counseling the violence prone andviolence victim, (f) international and cross-culturalimplications, and (g) discussion.  相似文献   

17.
In human infancy, 2 criteria for intentional communication are (a) persistence in and (b) elaboration of communication when initial attempts to communicate fail. Twenty-nine chimpanzees (Pan troglodytes) were presented with both desirable (a banana) and undesirable food (commercial primate chow). Three conditions were administered: (a) the banana was delivered (successful communication), (b) half of the banana was delivered (partially successful communication), and (c) the chow was delivered (failed communication). The chimpanzees exhibited persistence in and elaboration of their communication in every condition except when the banana was delivered. Thus, their communication was about a specific item, demonstrating that both intentionality and nonverbal reference are capacities shared by humans with our nearest living relatives, the great apes.  相似文献   

18.
The current study investigated the content of future perceptions among 47 U.S. women and 48 Israeli women. Thematic analysis was used to explore participants’ qualitative responses. Women’s responses covered a wide range of topics, and were categorized into ten key themes: (a) work, (b) family/relationships, (c) property, (d) residence, (e) education, (f) general quality of life, (g) leisure, (h) pro-social activities, (i) multiple role management, and (j) religion. Results demonstrated the role of nationality in the process of exploration and future perceptions. Implications for research and practice are discussed.  相似文献   

19.
This study aimed to create a new pedagogy-based website based on the analysis of the needs of 7147 website users who visited the Thailand Cyber University (TCU) project website during 2011–2013. The study consisted of 4 stages: (1) examining learners’ needs and literature related to developing a lifelong learning framework, (2) designing a site structure and an interface for a pedagogy-based website, (3) conducting a usability test on the website with a sample of 204 users, and (4) modifying the website based on results of a website usability test. Analysis from t-test, one-way ANOVA, and LSD test show that the website is appropriate for users of all genders, ages, educational levels, positions, years of computer and Internet experience, computer possession, and experience in using the TCU website. The new pedagogy-based website design incorporating the lifelong learning framework was proposed by integrating the pedagogical aspects and the theoretical framework of the learning community, motivation, and interaction, while the technological aspects were integrated using an open source web portal, responsive design, and the Universal Design (UD) principle, which enables the website to work on a variety of devices and learning resources. The six elements of the new website include: (1) main page, (2) online courses, (3) media support, (4) learning resources, (5) conferences and seminars, and (6) ‘about us’ pages.  相似文献   

20.
In this study, researchers compared the concordance of teacher-level effectiveness ratings derived via six common generalized value-added model (VAM) approaches including a (1) student growth percentile (SGP) model, (2) value-added linear regression model (VALRM), (3) value-added hierarchical linear model (VAHLM), (4) simple difference (gain) score model, (5) rubric-based performance level (growth) model, and (6) simple criterion (percent passing) model. The study sample included fourth to sixth grade teachers employed in a large, suburban school district who taught the same sets of students, at the same time, and for whom a consistent set of achievement measures and background variables were available. Findings indicate that ratings significantly and substantively differed depending upon the methodological approach used. Findings, accordingly, bring into question the validity of the inferences based on such estimates, especially when high-stakes decisions are made about teachers as based on estimates measured via different, albeit popular methods across different school districts and states.  相似文献   

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