On the Complexity of the Reduction of Multidimensional Data Models

In this paper, decomposition methods for multidimensional data hypercubes of OLAP systems are investigated. Criteria for reducing the computational complexity of the decomposition methods are presented and comparisons are made with the traditional solutions of multidimensional data analysis problems. Examples illustrating the application of these criteria to investigating the dynamics of computational complexity changes for specific types of reduction problems are considered.     

The nature of the modern information society

In this paper, a survey and critique are presented of the existing concepts of an information society. The concept of a “modern information society” is introduced. The main components of the information society concept are analyzed, i.e., information, information technologies and the IT workforce (specialists). Changes are considered in the main spheres of human activities. A broad definition of the modern information society is formulated.     

Impact of school-type and sex of the teacher on female students' attitudes toward mathematics in Nigerian secondary schools

The purpose of the study was to identify female students' attitudes toward mathematics when studying under four conditions and to assess the impact of school-type and sex of teacher on students' attitudes toward mathematics. An instrument to measure attitude toward mathematics was administered on a stratified random sample of 240 female students drawn from 5 co-educational and 6 all-girls' secondary schools in Plateau State, Nigeria. The findings suggest that the best environment under which females can learn mathematics is in all-girls' secondary schools where mathematics is taught by female teachers.     

Language and reading impairments are associated with increased prevalence of non-right-handedness

Handedness has been studied for association with language-related disorders because of its link with language hemispheric dominance. No clear pattern has emerged, possibly because of small samples, publication bias, and heterogeneous criteria across studies. Non-right-handedness (NRH) frequency was assessed in N = 2503 cases with reading and/or language impairment and N = 4316 sex-matched controls identified from 10 distinct cohorts (age range 6–19 years old; European ethnicity) using a priori set criteria. A meta-analysis (N_cases = 1994) showed elevated NRH % in individuals with language/reading impairment compared with controls (OR = 1.21, CI = 1.06–1.39, p = .01). The association between reading/language impairments and NRH could result from shared pathways underlying brain lateralization, handedness, and cognitive functions.     

Educational impact on the relationship of environmental knowledge and attitudes

This study examines the relationships between the environmental attitudes and environmental knowledge of schoolchildren within the framework of an environmental intervention. We employed questions from the 2-MEV model to monitor students’ environmental attitudes in terms of the model factors Preservation and Utilisation while concurrently monitoring three environmental knowledge dimensions (system, action-related and effectiveness knowledge) at three different test times during the course of a four-day field centre programme for fourth-graders (N = 133, M_age = 9.8 years). Probably due to measurement constraints (e.g. a ceiling effect, social desirability), we found no correlation between environmental knowledge and the attitude Preservation at all test times. The attitude Utilisation correlated negatively with all environmental knowledge dimensions, indicating that students who score higher on Utilisation are more likely, for example, to have and gain more system knowledge through programme participation than the other students or vice versa, as a causal relationship cannot be derived from our analyses: system knowledge may also influence Utilisation. In other words, children who refrain from (ab)using nature also seem to put more effort into improving their environmental knowledge and/or children who engage in learning about the environment will become less exploitative towards the environment.     

Trends in Public Library Design from the 19th to the 21st Centuries

In the early 19th century, public libraries in America tended toward grand appearances befitting seriousness of purpose. Library design changed gradually throughout the 20th and 21st centuries, and more dramatically with automation and new technology. True to its roots, the public library continues to maintain areas for quiet, individual study. But, in addition, today’s library has become a cultural center in the community, offering art galleries, auditoriums, meeting rooms, spaces for collaborative work, digital information and instruction, and even cafés. Change is inevitable, as innovations in library design and patron use illustrate. Yet, from the earliest libraries to modern times, one overarching constant defines their purpose: libraries inspire.     

丹巴县高中阶段教育发展调研报告

丹巴县高中阶段教育现状可归纳为：经济地理限制,发展基础薄弱;校园占地面积狭小,无扩展空间;资金投入少,资源配置不足;优质教师外流,优质生源外流;高中阶段普及率低,高考上线率低;学校缺乏竞争力,师生向心力不强。     

Reflections of an Online Social Work Professor: Illuminating an Alternative Pedagogy

ABSTRACT

Research in distance education has investigated student satisfaction and learning outcomes, comparing face-to-face with online delivery formats, and tested various technological tools, but has yet to consider alternative pedagogies. Liberatory pedagogy facilitates critical thinking, awareness, reflection and social action around constructs such as race, gender, and class. This paper uses Scholarly Personal Narrative to explore opportunities and challenges of implementing liberatory pedagogy within a virtual classroom. Themes include identity, body, mind, spirit, voice, authenticity, and self-actualization. Liberatory pedagogy emphasizes critical consciousness of oppression, aligns with professional values and ethics, encourages societal well-being, and would appear to enhance online social work education.     

Cognitive and social help giving in online teaching: an exploratory study

While literature suggests that college students may be less reluctant to seek help in online rather than traditional courses, little is known about how online instructors give help in ways that lead to increased student help seeking and academic success. In this study, we used theories and research on learning assistance and scaffolding, teacher immediacy, social presence, and academic help seeking to explore through a cross-case study design how three online instructors differed in their use of cognitive and social supports and how those differences related to student perceptions of support, help seeking, and performance. Primary data sources included all course postings by the instructors, interviews with the instructors, observational field notes on course discussions, student interviews, and final student grades. Archived course documents and student discussion postings were secondary data sources. Data analysis revealed that while all instructors provided cognitive and social support, they varied in their level of questioning, use of direct instruction, support for task structuring, and attention to group dynamics. This variation in teaching presence related to differences across the courses in student perceptions of support, student help seeking in course discussions, and final course grades. Implications for online teaching and suggestions for further research are offered.