MODELING RELATIONSHIPS AMONG LEARNING,ATTITUDE, SELF-PERCEPTION,AND SCIENCE ACHIEVEMENT FOR GRADE 8 SAUDI STUDENTS     

M’HAMED TIGHEZZA 《International Journal of Science and Mathematics Education》2014,12(4):721-740

The purpose of the present study was to examine the validity of modeling science achievement in terms of 3 social psychological variables (school connectedness, science attitude, and active learning) and 2 self-perception variables (self-confidence and science value). Two models were tested: full mediation and partial mediation. In the full-mediation model, effects of the 3 social psychological variables upon science achievement were hypothesized to be completely mediated through science value and self-confidence. In the partial-mediation model, however, those 3 variables were hypothesized to affect achievement directly as well as indirectly through the mediating roles of science value and self-confidence. Data were obtained from Grade 8 Saudi students (N = 4,099) who participated in TIMSS 2007. The relationships among constructs were examined with the use of structural equation modeling software Mplus7. Results indicated that both models performed adequately in terms of fit indices, but the partial-mediation model was retained due to its superiority over the full-mediation model in representing the sample covariance matrix as tested through chi-square difference test. The mediating role of self-confidence in the relationships of science attitude and active learning to achievement was substantiated, but the mediating role of science value was not supported.  相似文献   

Response     

Edward T. O’Neill 《Cataloging & classification quarterly》2014,52(3)

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Editing for desktop publishing: a guide to writing and editing on the personal computer John Taylor and Shirley Heale 1992 Hatfield,Herts: John Taylor Book Ventures (7 Cranborne Road,Hatfield, Herts,AL10 8AW) 205 p. Spiral bound     

Maeve O&#x;Connor 《Learned Publishing》1993,6(2):73-73

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Asymptotic behavior of solutions of some semilinear functional differential and integro-differential equations with infinite delay in Banach spaces     

A. Caicedo  C. Cuevas  G.M. Mophou  G.M. N’Guérékata 《Journal of The Franklin Institute》2012,349(1):1-24

We prove in this paper the existence and uniqueness of mild solutions to some functional differential and functional integro-differential equations with infinite delay in Banach spaces which approach almost automorphic functions at infinity. We also discuss the existence of S-asymptotically $\omega \text{-}\mathrm{periodic}$ mild solutions. The results are new.  相似文献   

我国联合型SKL自主创新的SWOT分析     

危怀安  刘薛  姚远 《科学学与科学技术管理》2012,(5):22-28

作为我国基础研究"国家队"的重要组成部分,联合型SKL已经成为我国开展高水平基础研究的重要基地,但其原始创新和集成创新能力有限,且不同类型的联合型SKL自主创新绩效差异显著。首次运用SWOT法对我国联合型SKL自主创新进行了比较全面系统的分析。研究表明,我国联合型SKL在自主创新方面具有各自的优势和劣势,面临不同的威胁和发展的机遇。因此,发挥多种策略的协同功能,就成为提升我国联合型SKL自主创新能力的应对之策。  相似文献   

The role of copper on colour of palaeo-Christian glass mosaic tesserae: An XAS study     

Alberta Silvestri  Serena Tonietto  Francesco D’Acapito  Gianmario Molin 《Journal of Cultural Heritage》2012,13(2):137-144

This work reports mainly the results of an X-ray Absorption Spectroscopy (XAS) study carried out on coloured glass tesserae from the palaeo-Christian mosaic which decorated the votive chapel of St. Prosdocimus (Padova) until its replacement with the current frescoes of Renaissance age, and which is one of the only two known mosaics in the Veneto region (Italy). The study aims at clarifying how the different local structure, oxidation state and quantity of copper influenced colour. Analysis of high-resolution Cu-K edge X-ray Absorption Near Edge Structure (XANES) and Extended X-ray Absorption Fine Structure (EXAFS) spectra showed that copper is present as cuprite (Cu₂O) in orange samples and as metallic copper in red and brown ones. These phases are responsible for both the colour and opacity of the samples. In addition, Cu¹⁺ ions linked to the oxygen atoms of the glass framework were identified in ratios of about 60% and 30% of total copper in orange and red/brown samples, respectively. In blue and green samples, copper is dispersed in the glass matrix as a mixture of Cu¹⁺ and Cu²⁺ ions, and no crystalline phases are visible. In this context, the Cu¹⁺ and Cu²⁺ contents in glass were also quantified thanks to suitable standards, demonstrating that, when Cu²⁺ is the main chromophorous ion, colour intensity is directly correlated to its content in the glass. In particular, in green and blue samples, coloured by copper, Cu²⁺ content varies from 26% to 56% of total copper, and the higher contents of Cu²⁺ are shown by more intensely coloured samples. It should be stressed here that the green colour of the analysed tesserae is given by the physical interaction of blue colour, due to Cu²⁺ ions, and yellow colour, due to Pb antimonates used as opacifiers.  相似文献   

Stability, change, and correlates of the peer relationships of young children with mild developmental delays     

Guralnick MJ  Hammond MA  Connor RT  Neville B 《Child development》2006,77(2):312-324

The peer relationships of young children with mild developmental (cognitive) delays recruited at 4-6 years of age were examined in a longitudinal study across a 2-year period. Results revealed only modest increases in children's peer interactions, a high degree of intraindividual stability, and the existence of a poorly organized and conflict-prone pattern of peer interactions. Child cognitive and language levels as well as family stress and support were associated with children's peer interactions. A subgroup was identified of initially low interactors who were at especially high risk for future peer interaction problems. These findings further underscore the importance of designing and implementing early intervention programs in the area of peer relationships for children with mild developmental delays.  相似文献   

Examining the communication skills of a young cochlear implant pioneer     

Connor CM 《Journal of deaf studies and deaf education》2006,11(4):449-460

The purpose of this longitudinal case study was to closely examine one deaf child's experience with a cochlear implant and his speech, language, and communication skills from kindergarten through middle and high school using both developmental and sociocultural frameworks. The target child was one of the first children to receive a cochlear implant in the United States in 1988, when he was 5 years of age. The developmental analysis revealed that prior to receiving a cochlear implant the child demonstrated profound delays in speech and language skill development. His speech and language skills grew slowly during the first 3-4 years following implantation, very rapidly from about 5 through 7 years postimplantation, then slowed to rates that were highly similar to same-age peers with normal hearing. The sociocultural analysis revealed that the child's communicative competence improved; that he used sign language but use of sign language decreased as his oral communication skills improved; that as his oral communication skills improved, the adults talked and directed the topic of conversation less frequently; and that topics became less concrete and more personal over time. The results of this study indicate that we may learn more about how to support children who use cochlear implants by examining what they are saying as well as how they are saying it.  相似文献   

The system of thematic classification of an integrated databank of geological research considering polydisciplinarity     

D. A. Kuz’mina 《Scientific and Technical Information Processing》2010,37(3):207-216

Questions about the construction of linguistic tools of an integrated databank on geology on a unified basis considering the polydisciplinarity and comparison of generally adopted information retrieval languages are examined. A system model of thematic classification for the integration of heterogeneous geological information on the basis of research problems is offered. Using the example of the common rubricators at the bibliographic (VINITI rubricator of the Russian Academy of Sciences) and factographic levels (VSEGEI dictionaries) generalized models are presented, viz., the organization of a thematic polydisciplinary space, the integration of geoecological data, and the thematic classifications of radiogeological data, volcanic danger, and mineralogical-planetological subjects.  相似文献   

Characteristics of project management at institutions sponsoring National Library of Medicine MedlinePlus Go Local     

Cynthia A. Olney  Joyce E. B. Backus  Lori J. Klein 《Journal of the Medical Library Association》2010,98(1):65-72

Objectives:

Through interviews with the National Library of Medicine''s MedlinePlus Go Local collaborators, an evaluation team sought to identify process characteristics that are critical for long-term sustainability of Go Local projects and to describe the impact that Go Local projects have on sponsoring institutions.

Methods:

Go Local project coordinators (n = 44) at 31 sponsor institutions participated in semi-structured interviews about their experiences developing and maintaining Go Local sites. Interviews were summarized, checked for accuracy by the participating librarians, and analyzed using a general inductive methodology.

Results:

Institutional factors that support Go Local projects were identified through the interviews, as well as strategies for staffing and partnerships with external organizations. Positive outcomes for sponsoring institutions also were identified.

Conclusions:

The findings may influence the National Library of Medicine team''s decisions about improvements to its Go Local system and the support it provides to sponsoring institutions. The findings may benefit current sponsoring institutions as well as those considering or planning a Go Local project.

Highlights

• Many project coordinators said they underestimated the level of work their National Library of Medicine (NLM) MedlinePlus Go Local projects would require, but most expressed dedication to the project and optimism about project sustainability.
• An institutional record of community service or outreach and a director who was supportive of the project were important factors in the progress and sustainability of Go Local projects.
• Go Local projects brought recognition to some sponsoring institutions from their parent institutions or their communities and provided opportunities to establish better relations with other libraries and institutions.
• Go Local projects ran more smoothly when a person, even a temporary hire, with dedicated time for the project was in charge during the initial building phase. Volunteer assistance has been difficult to motivate and sustain.

Implications

• NLM''s Go Local proposal guidelines accurately identify the factors that institutions should pay close attention to when planning a Go Local project.
• NLM should emphasize continuity plans to address project coordinator turnover.
• NLM should develop a more formal orientation plan for new project coordinators to assist program continuity at the sponsoring institutions.

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