Strategies,decisions and operations for keeping exploitative and exploratory activities balanced

Sustainable competitive advantage of a firm may lie in the firm’s ability to exploit its current competencies while simultaneously exploring new capabilities. However, this is hard to be achieved at the same time. Therefore, a conceptual decision-making framework is proposed to fulfil this task. First, to balance exploitation and exploration under punctuated equilibrium, a fuzzy analytic network process with goal programming is developed to help decision makers select the best projects under specific environments. Second, an executive committee, where experts use computer groupware with the Delphi technique to balance exploratory and exploitative activities flexibly, is formed to allocate limited resources during the implementation of the projects. After a practical investigation, the research concludes that the strategy targeted for balancing exploitation and exploration should be periodically adjusted, and the limited resources should be allocated during the execution of projects. Specifically, the proposed model for sustainable competitive advantage is recommended to practitioners in developing and implementing projects.     

Three dimensional passivated-electrode insulator-based dielectrophoresis

In this study, a 3D passivated-electrode, insulator-based dielectrophoresis microchip (3D πDEP) is presented. This technology combines the benefits of electrode-based DEP, insulator-based DEP, and three dimensional insulating features with the goal of improving trapping efficiency of biological species at low applied signals and fostering wide frequency range operation of the microfluidic device. The 3D πDEP chips were fabricated by making 3D structures in silicon using reactive ion etching. The reusable electrodes are deposited on second glass substrate and then aligned to the microfluidic channel to capacitively couple the electric signal through a 100 μm glass slide. The 3D insulating structures generate high electric field gradients, which ultimately increases the DEP force. To demonstrate the capabilities of 3D πDEP, Staphylococcus aureus was trapped from water samples under varied electrical environments. Trapping efficiencies of 100% were obtained at flow rates as high as 350 μl/h and 70% at flow rates as high as 750 μl/h. Additionally, for live bacteria samples, 100% trapping was demonstrated over a wide frequency range from 50 to 400 kHz with an amplitude applied signal of 200 Vpp. 20% trapping of bacteria was observed at applied voltages as low as 50 Vpp. We demonstrate selective trapping of live and dead bacteria at frequencies ranging from 30 to 60 kHz at 400 Vpp with over 90% of the live bacteria trapped while most of the dead bacteria escape.     

The Role of Mediators in the Development of Longitudinal Mathematics Achievement Associations

Despite research demonstrating a strong association between early and later mathematics achievement, few studies have investigated mediators of this association. Using longitudinal data (n = 1,362), this study tested the extent to which mathematics self‐concepts, school placement, executive functioning, and proficiency in fractions and division account for the association between mathematics achievement in first grade and at age 15. As hypothesized, a strong longitudinal association between first‐grade and adolescent mathematics achievement was present (β = .36) even after controlling for a host of background characteristics, including cognitive skills and reading ability. The mediators accounted for 39% of this association, with mathematics self‐concept, gifted and talented placement, and knowledge of fractions and division serving as significant mediators.     

From School Counselor to Counselor Educator: A Phenomenological Study

Through a phenomenological study, the experiences of 8 early‐career school counselor educators who entered academia directly from positions as P–12 school counselors were examined. Results revealed that the participants experienced numerous challenges and supports related to their transition. Recommendations for counselor educators, doctoral students, and new faculty are provided.     

An alternative teaching method of conditional probabilities and Bayes' rule: an application of the truth table

This paper presents a comparison of three approaches to the teaching of probability to demonstrate how the truth table of elementary mathematical logic can be used to teach the calculations of conditional probabilities. Students are typically introduced to the topic of conditional probabilities—especially the ones that involve Bayes' rule—with the help of such traditional approaches as formula use or conversion to natural frequencies. The truth table approach is an alternative method for explaining the concept and calculation procedure of conditional probability and Bayes' rule.     

Preparing for parents: how Australian teacher education is addressing the question of parent-school engagement

Parent-school engagement is widely embraced as a policy and educational ideal, yet to date there are few studies of how teacher education prepares students for this important aspect of their professional lives. In this paper, we consider findings from a recent Australian study that explored how the issue of parent-school relations is currently addressed in Australian initial teacher education programmes. The study is situated within the broader policy context of teaching standards. Our findings challenge suggestions that parent-school engagement is largely absent from pre-service programmes, and although the study recognizes gaps and discontinuities, it also identifies four key domains in which initial teacher education currently prepares students for parent engagement. We argue that students are being prepared for parent-school engagement in a variety of ways, but that there is insufficient continuity to ensure that all beginning teachers have a thorough understanding of how to work effectively with parents.     

The preparation of highly motivated and professionally competent teachers in initial teacher education

Education systems around the world need to recruit highly motivated individuals to become teachers and prepare professionally competent teacher education graduates to take up these broadened and deepened roles and responsibilities with a deep and lasting engagement to the profession. This article reports on a mixed-methods study that examines types of teaching motivation in relation to various facets of professional competence and planned engagement in future teaching. One hundred and thirty-two student teachers of a postgraduate diploma in education programme participated in the quantitative survey of whom seven were interviewed. The quantitative data analysis shows the positive association between ‘intrinsic–altruistic motivation constellation’ and selected facets of professional competence, with ‘intrinsic–multifaceted and stimulating job nature’ as the most distinctive type of teaching motivation. To complement the quantitative findings, the qualitative data analysis reveals two professional orientations of the ‘intrinsic–altruistic motivation constellation’, namely (1) student-centred orientation and (2) subject-centred orientation. In addition, three types of professional development aspirations are identified: ‘classroom engaged careerists’, ‘highly engaged persisters’ and ‘pessimists’. The study provides insights into the design of appropriate ITE practices to support professional learning in the light of student teachers’ motivations. It also suggests the importance of matching career opportunities and beginning teachers’ professional development aspirations and supporting ‘pessimists’ in the face of the stringent job market.     

Beyond authorship: attribution,contribution, collaboration,and credit

• As the number of authors on scientific publications increases, ordered lists of author names are proving inadequate for the purposes of attribution and credit.
• A multi‐stakeholder group has produced a contributor role taxonomy for use in scientific publications.
• Identifying specific contributions to published research will lead to appropriate credit, fewer author disputes, and fewer disincentives to collaboration and the sharing of data and code.

     

Curriculum Mapping in Academic Libraries

Librarians at four different academic institutions concurrently completed curriculum mapping projects using varying methods to analyze their information literacy instruction. Curriculum mapping is a process for systematically evaluating components of an instructional program for cohesiveness, proper sequencing, and goal achievement. There is a dearth of documentation of how this process has applied to an information literacy curriculum; however, the benefits of an organized examination of course progression is clear. The librarians explored curriculum mapping using different methodologies and approaches in order to formulate a more strategic approach to teaching students information literacy skills.     

1 The politics of urban education as a field of study: an interpretive analysis

Researchers in the field of urban education politics have much in agreement ‐ they refute the notion of bureaucratic insulation in school policy making, connect the school to its broader political and economic community, and address the effects of school governance on race relations, governmental legitimacy and political representation. At the same time, approaching the field with different disciplinary backgrounds and substantive interests, researchers have offered competing frameworks in analysing school politics. In my view, disagreements and consensus within the field can be better appreciated if the diverse approaches and their substantive findings are understood in the proper context of the school policy organization ‐ the way power is allocated between the top of the system and the school site and the way clientele are involved in schooling decisions. In this partial review of the literature, I shall propose an integrative framework that specifies the circumstances under which different kinds of politics occur. The final section will explore research and policy implications.