795 resultados para Empirical study


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The aim of this study is to investigate the significance of educational practices aimed at children in non formal education, in this case, specifically, the hospital context. The chosen methodology is part of an investigation conducted in two phases. In the first phase was carried out a theoretical stage, scientifically based studies guided by an historical-cultural and Sociology of Childhood, enabling placement on the particularities of children, the playfulness and the positioning of Pedagogy in the hospital. After this theoretical study was performed the second phase, with the completion of an empirical study with a research and intervention in a hospital playroom, in a public hospital considered a regional center in the northwestern city of São Paulo. The methodological procedures adopted for this empirical study were participant observation, interviews, action research and a questionnaire. Participant observation and action research are conducted within the brinquetodeca in five meetings with about 15 children, interviews were conducted with three family members and the questionnaire was applied to a healthcare professional. Among the results we can mention the following findings: a confirmation of the necessity of work in the hospital directing playful adaptations for the preservation and development of children's learning, and recent publications are scarce about the Hospital Education and underscore the need for the professional practice of education in non-school, the educational activities carried out reveals the possibilities of offering the child the continuation of their educational activities involving the playful and educational, the international and national literature on educational practices in the hospital allow to check ...(Complete abstract click electronic access below)

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The aim of this study is to investigate the importance of playfulness and interpersonal relationships at school. The methodology of the study was divided into three phases: the first phase was a survey and analysis of studies in the field of childhood playfulness and interpersonal relationships, from a reference from a multidisciplinary reference, supported in the areas of Educational Psychology and history and sociology of childhood and the second was the realization of an empirical study in a classroom of 1st year of elementary school, in which we use as instruments the use of participant observation, semistructured interviews with six selected students and collected school records and the third phase focused on analysis of data from a qualitative perspective with dialogues between literature in the area and data analysis. Among the main directions of study have the following problematizations: school world not adapted in order to enroll in elementary school, lack of playfulness, interpersonal relations in this context. By analyzing this information and the main results we have the advancement of education in the new environment where playfulness, as the jokes were not taken during the year by the teacher, but remained present in the actions of children, highlighting also the symbolism and sets of rules. Interpersonal relationships were present at all times, between being a friend, share and discuss, through the interactions. Therefore, we consider that there are still challenges to deal with this new child who enters school as it relates to your mood, the play, study or friendship

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This research, based on authors such as Was (1999), Guarnieri (1996 and 2005), Freitas (2002 and 2007) argue that the understanding of teacher education as a complex continuum aimed at understanding the initiation of the educational performance in the first five years of professional practice, by analyzing the history of teaching teachers early in their career. As we contemplate the specific objectives of interest to examine the training received to enter and work in the classroom and the experiences in teaching at undergraduate students. To perform the empirical study we adopted the use of semi-structured, guided by an outline of issues significant to the conduct of the respondents' narratives. The main results can highlight the difficulties encountered at the beginning of the educational performance are recurrent, data analysis shows that there is a significant increase in the duties of the teacher. With the study arrives at the premise that we must rethink the quality and structure of training courses aimed at improving the quality of performance of professional education, but for this to occur there must be deepening of studies and improvements not only in initial training and in continuing education courses. It is understood here that the training is not solely responsible for the current educational scene, which encompasses the question of the beginner there are many issues to be studied, such as public policies, structuring the curriculum, pay, but the training is beginning to there are faculty prepared to act

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Background: Once multi-relational approach has emerged as an alternative for analyzing structured data such as relational databases, since they allow applying data mining in multiple tables directly, thus avoiding expensive joining operations and semantic losses, this work proposes an algorithm with multi-relational approach. Methods: Aiming to compare traditional approach performance and multi-relational for mining association rules, this paper discusses an empirical study between PatriciaMine - an traditional algorithm - and its corresponding multi-relational proposed, MR-Radix. Results: This work showed advantages of the multi-relational approach in performance over several tables, which avoids the high cost for joining operations from multiple tables and semantic losses. The performance provided by the algorithm MR-Radix shows faster than PatriciaMine, despite handling complex multi-relational patterns. The utilized memory indicates a more conservative growth curve for MR-Radix than PatriciaMine, which shows the increase in demand of frequent items in MR-Radix does not result in a significant growth of utilized memory like in PatriciaMine. Conclusion: The comparative study between PatriciaMine and MR-Radix confirmed efficacy of the multi-relational approach in data mining process both in terms of execution time and in relation to memory usage. Besides that, the multi-relational proposed algorithm, unlike other algorithms of this approach, is efficient for use in large relational databases.

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Nowadays it is increasingly required insertion History of Science on content to be worked in education, which raises many doubts and difficulties on the teachers did not have that content in their initial training. This work results from a qualitative empirical study aimed to investigate how a teacher of Biology and Science in a public school in the city of Bauru - SP was not in their initial training courses relating to the History of Science, mobilizes their knowledge to enter such an approach in their teaching practice. In the research methodology used as its theme the history of DNA present in the materials and also conduct open interviews and field notes to identify the knowledge involved in teaching practice and was adopted as the theoretical framework of Maurice Tardif’s Docent Knowledge. The results showed that even with difficulties arising from gaps in initial training, the teacher resorted to their experiential knowledge to meet these needs in addition to appropriate knowledge from the programs and textbooks, but its shortcomings make it difficult to analyze more critically. Thus, these data lead us to a reflection on the role of textbooks for these teachers is the process by which the consolidation of the knowledge they constructed.

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The Folha Universal, newspaper produced by the Igreja Universal do Reino de Deus (Iurd, abbreviation in Portuguese for Universal Church of the Kingdom of God), reaches an average weekly circulation from 2.5 to 3.5 million copies. Studies indicate that the Folha Universal is not merely an institutional newspaper. It is systematically dedicated to be a source of political information to their readers, in order to publicize candidates and politicians who defend the Iurd’s proposals for the Brazilian public life. This paper describes results of an empirical study on the frames built by the Folha Universal about the social demands, economic and political governance considered as priorities to the public management by the Iurd around five themes of analysis: public safety; children and adolescents care; public health; environment; politics and economy. The results indicate that, as characteristics of the Folha Universal in the four months prior to the 2010 Brazilian elections, aspects that differ from those indicated by previous studies on the newspaper. Previously detected in the pages of Folha Universal as a mean for finding solutions to social problems, the theology of prosperity was in our sample replaced by the formulation of public policies.

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The internet, with its hypertext and multimedia features, can be a support for the dissemination of information in an attractive way, which may contribute to the strengthening of democracy. Recent innovation, social networks have been explored also as a resource to attract the interest of the broader public to information about public policies. This paper presents and discusses the results of an empirical study which assessed, through content analysis, the breadth and depth of information offered by the Sao Paulo state government and the federal government in texts accessed through Twitter to publicize purposes, lines of action and limits of public policy in the areas of welfare, health, education and environment . The results indicate that the information available tend to focus mainly on goals, resources and current actions of policies, whereas there can be found few data on planned features, relation between cost and effectiveness and user satisfaction.

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The Participatório: Observatório Participativo da Juventude (Participatory: Observatory on the Youth Participation) is an online platform created in August 2013 as part of the response of the General Secretariat of the Presidency of the Republic of Brazil to the protests which took Brazilian streets in the middle of that year. This paper analyses the Participatório against the theoretical context brought by studies of digital activism and social movements. We revise relevant theories and present results of an empirical study indicating parameters to assess whether the apparent goals of the platform would have been reached. The data suggest that the initiative could achieve its purposes as long as it secures the efficacy of future improvements.

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As software evolves, engineers use regression testing to evaluate its fitness for release. Such testing typically begins with existing test cases, and many techniques have been proposed for reusing these cost-effectively. After reusing test cases, however, it is also important to consider code or behavior that has not been exercised by existing test cases and generate new test cases to validate these. This process is known as test suite augmentation. In this paper we present a directed test suite augmentation technique, that utilizes results from reuse of existing test cases together with an incremental concolic testing algorithm to augment test suites so that they are coverage-adequate for a modified program. We present results of an empirical study examining the effectiveness of our approach.

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Regression testing is an important part of software maintenance, but it can also be very expensive. To reduce this expense, software testers may prioritize their test cases so that those that are more important are run earlier in the regression testing process. Previous work has shown that prioritization can improve a test suite’s rate of fault detection, but the assessment of prioritization techniques has been limited to hand-seeded faults, primarily due to the belief that such faults are more realistic than automatically generated (mutation) faults. A recent empirical study, however, suggests that mutation faults can be representative of real faults. We have therefore designed and performed a controlled experiment to assess the ability of prioritization techniques to improve the rate of fault detection techniques, measured relative to mutation faults. Our results show that prioritization can be effective relative to the faults considered, and they expose ways in which that effectiveness can vary with characteristics of faults and test suites. We also compare our results to those collected earlier with respect to the relationship between hand-seeded faults and mutation faults, and the implications this has for researchers performing empirical studies of prioritization.

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End-user programmers are increasingly relying on web authoring environments to create web applications. Although often consisting primarily of web pages, such applications are increasingly going further, harnessing the content available on the web through “programs” that query other web applications for information to drive other tasks. Unfortunately, errors can be pervasive in web applications, impacting their dependability. This paper reports the results of an exploratory study of end-user web application developers, performed with the aim of exposing prevalent classes of errors. The results suggest that end-users struggle the most with the identification and manipulation of variables when structuring requests to obtain data from other web sites. To address this problem, we present a family of techniques that help end user programmers perform this task, reducing possible sources of error. The techniques focus on simplification and characterization of the data that end-users must analyze while developing their web applications. We report the results of an empirical study in which these techniques are applied to several popular web sites. Our results reveal several potential benefits for end-users who wish to “engineer” dependable web applications.

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Background: The negative sensory properties of casein hydrolysates (HC) often limit their usage in products intended for human consumption, despite HC being nutritious and having many functional benefits. Recent, but taxonomically limited, evidence suggests that other animals also avoid consuming HC when alternatives exist. Methodology/Principal Findings: We evaluated ingestive responses of five herbivorous species (guinea pig, mountain beaver, gopher, vole, and rabbit) and five omnivorous species (rat, coyote, house mouse, white-footed mouse, and deer mouse; N = 16–18/species) using solid foods containing 20% HC in a series of two-choice preference tests that used a nonprotein, cellulose-based alternative. Individuals were also tested with collagen hydrolysate (gelatin; GE) to determine whether it would induce similar ingestive responses to those induced by HC. Despite HC and GE having very different nutritional and sensory qualities, both hydrolysates produced similar preference score patterns. We found that the herbivores generally avoided the hydrolysates while the omnivores consumed them at similar levels to the cellulose diet or, more rarely, preferred them (HC by the white-footed mouse; GE by the rat). Follow-up preference tests pairing HC and the nutritionally equivalent intact casein (C) were performed on the three mouse species and the guinea pigs. For the mice, mean HC preference scores were lower in the HC v C compared to the HC v Cel tests, indicating that HC’s sensory qualities negatively affected its consumption. However, responses were species-specific. For the guinea pigs, repeated exposure to HC or C (4.7-h sessions; N = 10) were found to increase subsequent HC preference scores in an HC v C preference test, which was interpreted in the light of conservative foraging strategies thought to typify herbivores. Conclusions/Significance: This is the first empirical study of dietary niche-related taxonomic differences in ingestive responses to protein hydrolysates using multiple species under comparable conditions. Our results provide a basis for future work in sensory, physiological, and behavioral mechanisms of hydrolysate avoidance and on the potential use of hydrolysates for pest management.

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Mashups are becoming increasingly popular as end users are able to easily access, manipulate, and compose data from several web sources. To support end users, communities are forming around mashup development environments that facilitate sharing code and knowledge. We have observed, however, that end user mashups tend to suffer from several deficiencies, such as inoperable components or references to invalid data sources, and that those deficiencies are often propagated through the rampant reuse in these end user communities. In this work, we identify and specify ten code smells indicative of deficiencies we observed in a sample of 8,051 pipe-like web mashups developed by thousands of end users in the popular Yahoo! Pipes environment. We show through an empirical study that end users generally prefer pipes that lack those smells, and then present eleven specialized refactorings that we designed to target and remove the smells. Our refactorings reduce the complexity of pipes, increase their abstraction, update broken sources of data and dated components, and standardize pipes to fit the community development patterns. Our assessment on the sample of mashups shows that smells are present in 81% of the pipes, and that the proposed refactorings can reduce that number to 16%, illustrating the potential of refactoring to support thousands of end users developing pipe-like mashups.