What level of education matters most for growth?: Evidence from Portugal     

João Pereira  Miguel St. Aubyn 《Economics of Education Review》2009

We decompose annual average years of schooling series for Portugal into different schooling levels series. By estimating a number of vector autoregressions, we provide measures of aggregate and disaggregate economic growth impacts of different education levels. Increasing education at all levels except tertiary have a positive and significant effect on growth. Investment in education does not significantly crowd out physical investment and average years of schooling semi-elasticities have comparable magnitude across primary and secondary levels.  相似文献   

Effects of different intensities of resistance training with equated volume load on muscle strength and hypertrophy     

Thiago Lasevicius  Carlos Ugrinowitsch  Brad Jon Schoenfeld  Hamilton Roschel  Lucas Duarte Tavares  Eduardo Oliveira De Souza 《European Journal of Sport Science》2018,18(6):772-780

The present study investigated the effects of different intensities of resistance training (RT) on elbow flexion and leg press one-repetition maximum (1RM) and muscle cross-sectional area (CSA). Thirty men volunteered to participate in an RT programme, performed twice a week for 12 weeks. The study employed a within-subject design, in which one leg and arm trained at 20% 1RM (G20) and the contralateral limb was randomly assigned to one of the three conditions: 40% (G40); 60% (G60), and 80% 1RM (G80). The G20 started RT session with three sets to failure. After G20 training, the number of sets was adjusted for the other contralateral limb conditions with volume-matched. CSA and 1RM were assessed at pre, post-6 weeks, and post-12 weeks. There was time effect for CSA for the vastus lateralis (VL) (8.9%, 20.5%, 20.4%, and 19.5%) and elbow flexors (EF) (11.4%, 25.3%, 25.1%, and 25%) in G20, G40, G60, and G80, respectively (p?>?.05). G80 showed higher CSA than G20 for VL (19.5% vs. 8.9%) and EF (25% vs. 11.4%) at post-12 weeks (p?p?相似文献   

Understanding productivity dynamics: A task taxonomy approach     

Tiago Fonseca  Francisco Lima  Sonia C. Pereira 《Research Policy》2018,47(1):289-304

As job markets have been polarizing, firms have been changing their labor inputs. By using matched employer–employee data for Portugal, we examine whether labor market polarization has occurred within or across firms and how labor input upgrades have contributed to overall productivity growth. We develop a firm taxonomy based on worker's occupational data. Firms can be focused on one task – Abstract, Manual or Routine – on a combination of tasks, or none. Results show that Abstract firms are the most productive and their share has increased over time. Manual firms, the least productive, have had a stable share throughout the period. Routine firms have seen their share decline over time. The dynamic decomposition of the estimated productivity reveals that productivity growth is propelled by increased market shares of the most productive incumbents and exiting of the least productive, especially for Abstract firms. Notwithstanding these productivity growth drivers, they fail to avert the productivity stagnation observed in Portugal between 2004 and 2009 due to the overall decline in productivity of incumbent firms, especially Routine. We discuss the policy implications of our results which are relevant to other European economies also lagging behind in terms of knowledge and innovation capabilities.  相似文献   

College career planning and placement centers: Finding their identity     

Ellen B. Lucas 《Journal of Career Development》1986,13(1):9-17

  相似文献   

The introduction, methods, results, and discussion (IMRAD) structure: a fifty-year survey.   总被引：1，自引：0，他引：1  

Luciana B Sollaci  Mauricio G Pereira 《Journal of the Medical Library Association》2004,92(3):364-367

  相似文献   

Truth and Provability     

Lucas  John; Redhead  Michael 《The British journal for the philosophy of science》2007,58(2):331-332

The views of Redhead ([2004]) are defended against the argumentby Panu Raatikainen ([2005]). The importance of informal rigouris canvassed, and the argument for the a priori nature of inductionis explained. The significance of Gödel's theorem is againrehearsed.  相似文献   

The DREAMS Team: Creating community partnerships through research advocacy training for diverse older adults     

Ariel R. Hart  Rebecca Dillard  Molly M. Perkins  Camille P. Vaughan  Kathy Kinlaw  J. Lucas McKay 《Educational gerontology》2017,43(9):440-450

The DREAMS Team research advocacy training program helps clinical faculty and health students introduce basic clinical research concepts to diverse older adults to galvanize their active involvement in the research process. Older adults are frequently underrepresented in clinical research, due to barriers to participation including distrust, historical mistreatment, and their lack of health literacy. The DREAMS Team program aims to involve diverse older adults throughout all phases of research and increase research participation, thereby contributing to the growth of quality patient-centered, evidence-based health care. This course was developed for clinical faculty to deliver to diverse adults aged 55+ in eight 50-minute lectures, followed by half-hour small group discussions moderated by health students. A pilot cohort of 24 individuals was assessed for satisfaction post-program, and self-efficacy before and after the program. Older adult participants improved on a survey measure of self-efficacy, and indicated satisfaction on a post-program questionnaire. All agreed or strongly agreed that they enjoyed participating, and that classes enhanced knowledge/skills about the topics, were high quality, and provided useful information. Twenty-two out of 24 individuals who completed the program indicated they planned to get involved as research advocates. The DREAMS Team program can be offered either on its own, or as a follow-up program to a general health education course led by health students and/or professional researchers or clinicians. Educating older adults about the research process and advocacy through interactive seminars led by congenial and respectful researchers and health students may remove some barriers to research participation and involvement among diverse older adults.  相似文献   

How and where is artificial intelligence in the public sector going? A literature review and research agenda     

Weslei Gomes de Sousa  Elis Regina Pereira de Melo  Paulo Henrique De Souza Bermejo  Rafael Araújo Sousa Farias  Adalmir Oliveira Gomes 《Government Information Quarterly》2019,36(4):101392

To obtain benefits in the provision of public services, managers of public organizations have considerably increased the adoption of artificial intelligence (AI) systems. However, research on AI is still scarce, and the advance of this technology in the public sector, as well as the applications and results of this strategy, need to be systematized. With this goal in mind, this paper examines research related to AI as applied to the public sector. A review of the literature covering articles available in five research databases was completed using the PRISMA protocol for literature reviews. The search process yielded 59 articles within the scope of the study out of a total of 1682 studies. Results show a growing trend of interest in AI in the public sector, with India and the US as the most active countries. General public service, economic affairs, and environmental protection are the functions of government with the most studies related to AI. The Artificial Neural Networks (ANN) technique is the most recurrent in the investigated studies and was pointed out as a technique that provides positive results in several areas of its application. A research framework for AI solutions for the public sector is presented, where it is demonstrated that policies and ethical implications of the use of AI permeate all layers of application of this technology and the solutions can generate value for functions of government. However, for this, a prior debate with society about the use of AI in the public sector is recommended.  相似文献   

Invoking politics and ethics in the design of information technology: undesigning the design   总被引：1，自引：0，他引：1  

Martin Brigham  Lucas D. Introna 《Ethics and Information Technology》2007,9(1):1-10

It is a truism that the design and deployment of information and communication technologies is vital to everyday life, the conduct of work and to social order. But how are individual, organisational and societal choices made? What might it mean to invoke a politics and an ethics of information technology design and use? This editorial paper situates these questions within the trajectory of preoccupations and approaches to the design and deployment of information technology since computerisation began in the 1940s. Focusing upon the dominant concerns over the last three decades, the paper delineates an interest in design and use in relation to socio-technical theories, situated practices and actor-network theory. It is argued that each of these approaches is concerned with a particular form of politics that does not explicitly engage with ethics. In order to introduce ethics into contemporary debates about information technology, and to frame the papers in the special issue, it is argued that Levinas’ ethics is particularly valuable in problematising the relationship between politics and ethics. Levinas provides a critique of modernity’s emphasis on politics and the egocentric self. It is from a Levinasian concern with the Other and the primacy of the ethical that a general rethinking of the relationship between politics, ethics and justice in relation to information and communication technologies can be invoked.  相似文献   

The Role of the Microcomputer-Based Laboratory Display in Supporting the Construction of New Understandings in Kinematics     

Russell  David W.  Lucas  Keith B.  McRobbie  Campbell J. 《Research in Science Education》2003,33(2):217-243

Teachers' failure to utilise MBL activities more widely may be due to not recognising their capacity to transform the nature of laboratory activities to be more consistent with contemporary constructivist theories of learning. This research aimed to increase understanding of how MBL activities specifically designed to be consistent with a constructivist theory of learning support or constrain student construction of understanding. The first author conducted the research with his Year 11 physics class of 29 students. Dyads completed nine tasks relating to kinematics using a Predict-Observe-Explain format. Data sources included video and audio recordings of students and teacher during four 70-minute sessions, students' display graphs and written notes, semi-structured student interviews, and the teacher's journal. The study identifies the actors and describes the patterns of interactions in the MBL. Analysis of students' discourse and actions identified many instances where students' initial understanding of kinematics were mediated in multiple ways. Students invented numerous techniques for manipulating data in the service of their emerging understanding. The findings are presented as eight assertions. Recommendations are made for developing pedagogical strategies incorporating MBL activities which will likely catalyse student construction of understanding.  相似文献