Context. Software testing is one of the crucial phases in software development life cycle (SDLC). Among the different manual testing methods in software testing, Exploratory testing (ET) uses no predefined test cases to detect defects. Objectives. The main objective of this study is to test the effectiveness of ET in detecting defects at different software test levels. The objective is achieved by formulating hypotheses, which are later tested for acceptance or rejection. Methods. Methods used in this thesis are literature review and experiment. Literature review is conducted to get in-depth knowledge on the topic of ET and to collect data relevant to ET. Experiment was performed to test hypotheses specific to the three different testing levels : unit , integration and system. Results. The experimental results showed that using ET did not find all the seeded defects at the three levels of unit, integration and system testing. The results were analyzed using statistical tests and interpreted with the help of bar graphs. Conclusions. We conclude that more research is required in generalizing the benefits of ET at different test levels. Particularly, a qualitative study to highlight factors responsible for the success and failure of ET is desirable. Also we encourage a replication of this experiment with subjects having a sound technical and domain knowledge. / H.no.2-7-644, Mukrumpura, Karimnagar, Pincode:500001, India, Phone number: +91-9908644775

Software testing is a key phase in software development lifecycle. Testing objectives corresponds to the discovery and detection of faults, which can be attained by utilizing manual or automated testing approaches. In this thesis, we are mainly concerned with the manual test approaches. The most commonly used manual testing approaches in the software industry are the Exploratory Testing (ET) approach and the Test Case Based Testing (TCBT) approach. TCBT is primarily used by software testers to formulize and guide their testing tasks and set the theoretical principles for testing. On the other hand ET is simultaneous learning, test design, and test execution. Software testing might benefit from an intelligent combination of these approaches of testing however there is no proof of any formal process that accommodates the usage of both test approaches in a combination. This thesis presents a process for Mix Testing (MT) based on the strengths and weaknesses of both test approaches, identified through a systematic literature review and interviews with testers in a software organization. The new process is defined through the mapping of weaknesses of one approach to the strengths of other. Static validation of the MT process through interviews in the software organization suggested that MT has ability to resolve the problems of both test approaches to some extent. Furthermore, MT was validated by conducting an experiment in an industrial setting. The analysis of the experimentation results indicated that MT has better defect detection than TCBT and less than ET. In addition, the results of the experiments also indicate that MT provides equal functionality coverage as compared to ET and TCBT.

When systematically adopting a CASE (Computer-Aided Software Engineering) tool, an organisation evaluates candidate tools against a framework of requirements, and selects the most suitable tool for usage. A method, called 2G, has been proposed that aims at developing such frameworks based on the needs of a specific organisation. This method includes a pilot evaluation phase, where state-of-the-art CASE-tools are explored with the aim of gaining more understanding of the requirements that the organisation adopting CASE-tools puts on candidate tools. This exploration results in certain output data, parts of which are used in interviews to discuss the findings of the tool exploration with the organisation. This project has focused on identifying the characteristics of these data, and subsequently to hypothesise a representation of the data, with the aim of providing guidelines for future tool support for the 2G method. The approach to reaching this aim was to conduct a case study of a new application of the pilot evaluation phase, which resulted in data that could subsequently be analysed with the aim of identifying characteristics. This resulted in a hypothesised data representation, which was found to fit the data from the conducted application well, although certain situations were identified that the representation might not be able to handle.

The purpose of this study was to develop and validate the Educational Psychology Practitioner Scale (EPPS), which was designed to (a) assess the practices, training, and skills of educational psychologists and (b) determine their utility among K-12 schools classroom teachers. Study participants included 161 K-12 teachers across 21 states within the United States. An exploratory factor analysis yielded a 25-item, unidimensional scale. Correlating the EPPS with the Teacher Sense of Efficacy Scale (Tschannen-Moran & Woolfolk Hoy, 2001) and the Job Satisfaction Scale (Warner, 1973) provided discriminant validity for the scale. Study limitations and future research directions are discussed.

Abstract The purpose of this thesis is to contribute empirical evidence focusing on sustainable competitive advantage through ERP systems. It identifies the shift towards strategic positioning while moving in different ERP stages and industrial environments. The work starts from the premise that advanced ERP processes are simply commodities insinuating competitive convergence. The literature considers IT and strategy but few texts deal with understanding ERP resources over time in order to become source of sustainable advantage. As companies undergo transformation or strive to develop new approaches to competition, it is particularly significant to investigate this venture. The exploratory inquiry in this dissertation aims to develop insights by a combination of qualitative and quantitative research traditions. The dual approach seeks to integrate the best research practices for contribution to the pertinent stakeholders. The first section is the introductory part followed by publications including case studies and surveys conducted on the basis of the gaps identified between theory and practice. The work is limited in scope and the intention is to appreciate knowledge acquired from the studies instead of drawing rigid extensive conclusions. However, the study traces that the ERP systems do provide competitive advantage, the sustainability depending on integrating to meet the business needs and building uniqueness. The implication is to capitalize on the potential of ERP, the idea being not to imitate competitors but to tailor applications to the company's overall strategy.

[pt] Inspirada na abordagem investigativa e pedagógica da Prática Exploratória, (Allwright, 2003) esta dissertação tem como objetivo investigar por que a turma 1701 se percebe feliz durante as aulas de inglês como língua estrangeira, do sétimo ano, em uma Escola Municipal na cidade do Rio de Janeiro. Neste trabalho conjunto, a professora-pesquisadora e seus alunos de uma turma de inglês procuram entender a co-construção da qualidade de vida dessa interação pedagógica prazerosa. A investigação se realizou através de uma atividade pedagógica com potencial exploratório. O trabalho-para-entendimento buscou alcançar entendimentos de todos os participantes quanto à qualidade do processo de ensino-aprendizagem. O material discursivo exploratório produzido pelos alunos assim como a narrativa de experiência pessoal profissional e interpretativa da professora foram analisados à luz das noções bakhtinianas (2003) de historicidade, relação dialógica, enunciado e voz e da perspectivas afetiva à luz de Arnold & Brown (1999) e Allwright & Bailey (1991). Os entendimentos alcançados pela professora-pesquisadora acerca da sua trajetória profissional e a análise reflexiva gerada neste estudo sugerem que a sala de aula da turma 1701 é o espaço que abriga sujeitos com diferentes saberes e crenças pedagógicas que ecoam manifestações de afeto. A qualidade de vida prazerosa do cotidiano deste grupo se co-constrói ancorada nos Good-mornings! compartilhados no início das aulas, nas características pessoais e nos saberes da professora, nas relações estabelecidas entre as pessoas em sala de aula, e aos processos cognitivos vivenciados. / [en] Inspired by the investigative and pedagogic approach of Exploratory Practice (Allwright, 2003), this study aims at understanding why the 1701 class feels happy during their classes of English as a foreign language, in the 7th grade of a municipal school in Rio de Janeiro, Brazil. In this participatory practitioner research, the teacher-researcher and the learners in one of her English classes work to understand the quality of classroom life that they co-construct during their pleasant pedagogic interaction. The research was carried out through a pedagogic activity with exploratory potential. This work for understanding searched for the understandings of all the participants regarding the quality of their classroom teaching-learning experience. The analysis of the exploratory discourse produced by the students and the teacher’s reflective narrative of her personal professional experience was based on Bakhtin’s (2003) notions of historicity, dialogism, utterance and voice as well as the notion of affect, as discussed by Arnold & Brown (1999) and Allwright & Bailey (1991). The understandings reached by the teacher-researcher about her professional experiences and the reflexive analysis developed in this study suggest that the 1701 class is a space shared by people with different knowings and pedagogical beliefs, who echo demonstrations of affect. The quality of this group’s enjoyable classroom life appears to be co-constructed through the Good-mornings! shared in the beginning of their classes, through the teacher’s personal characteristics and knowledge-base, through the socio-affective relations established among the people in the classroom, and through the cognitive processes developed.

Adolescents need to feel loved and cared for and they need to share their feelings with other people in their environment. As the school plays a significant role in the life of the adolescent, emotional support is an important aspect that has to be part of any educational setting. Unfortunately, adolescents do not always feel comfortable talking to a teacher, a person in authority or even a school psychologist. In many instances they are most comfortable talking to a friend or a peer with whom they can identify. In this study, a literature review explored adolescence as a developmental stage, existing support systems in schools, and the history, key features, definition and nature of peer support groups and supervision of peer supporters. Studies revealed that peer support has potential advantages but also disadvantages for peer supporters but that the former outweigh the latter. The study also looked at research on peer support groups in the South African context. The aims of this study were to explore, in a qualitative way, the experiences, thoughts and feelings of three adolescent peer supporters and provide rich and thick descriptions of their stories. Postmodernism, social constructionism and narrative psychology were combined and identified as a framework for the research. The research material gathered by means of individual interviews, focus groups and journaling reflected the realities co-constructed by the participants and the researcher. The researcher also made use of reflexivity by including a description of her own experience of the research process. The strengths and limitations of this study are evaluated and the findings are summarized. Finally, recommendations are made on supervision, constructing roles and boundaries, training, keeping the momentum of peer support groups going and the usefulness of peer support groups. / Dissertation (MA (Counseling Psychology))--University of Pretoria, 2007. / Psychology / unrestricted

Across a wide variety of digital devices, users create, consume, and disseminate large quantities of information. While data sometimes look like a spreadsheet or network diagram, more often for everyday users their data look more like an Amazon search page, the line-up for a fantasy football team, or a set of Yelp reviews. However, interpreting these kinds of data remains a difficult task even for experts since they often feature soft or unknown constraints (e.g. ”I want some Thai food, but I also want a good bargain”) across highly multidimensional data (i.e. rating, reviews, popularity, proximity). Existing technology is largely optimized for users with hard criteria and satisfiable constraints, and consumer systems often use representations better suited for browsing than sensemaking. In this thesis I explore ways to support soft constraint decision-making and exploratory data analysis by giving users tools that show fine-grained features of the data while at the same time displaying useful contextual information. I describe approaches for representing collaborative content history and working behavior that reveal both individual and group/dataset level features. Using these approaches, I investigate general visualizations that utilize physics to help even inexperienced users find small and large trends in multivariate data. I describe the transition of physicsbased visualization from the research space into the commercial space through a startup company, and the insights that emerged both from interviews with experts in a wide variety of industries during commercialization and from a comparative lab study. Taking one core use case from commercialization, consumer search, I develop a prototype, Fractal, which helps users explore and apply constraints to Yelp data at a variety of scales by curating and representing individual-, group-, and dataset-level features. Through a user study and theoretical model I consider how the prototype can best aide users throughout the sensemaking process. My dissertation further investigates physics-based approaches for represent multivariate data, and explores how the user’s exploration process itself can help dynamically to refine the search process and visual representation. I demonstrate that selectively representing points using clusters can extend physics-based visualizations across a variety of data scales, and help users make sense of data at scales that might otherwise overload them. My model provides a framework for stitching together a model of user interest and data features, unsupervised clustering, and visual representations for exploratory data visualization. The implications from commercialization are more broad, giving insight into why research in the visualization space is/isn’t adopted by industry, a variety of real-world use cases for multivariate exploratory data analysis, and an index of common data visualization needs in industry.

In extremely preterm infants, acute abdominal emergencies are fortunately less common with improving care. Spontaneous intestinal perforation and necrotizing enterocolitis are conditions where emergency surgery is most often needed. Conservative medical management and placement of temporary drain are often used in the initial management. Internal hernia (IH) is an uncommon cause of bowel obstruction in neonates, is difficult to diagnose and unfortunately are found only at autopsy. The presentation in preterm infants, distinction between these conditions, and the need for early diagnosis of IH are discussed.

Anthropogenic environmental changes are occurring globally and are having dramatic effects on wildlife. Successful urban animals can alter behaviours to adjust to these conditions, but it is not well understood how these modifications arise. In particular, exploratory personality and behavioural plasticity are predicted to facilitate colonization in urban areas. The link between exploratory personality, cognition, and plasticity has received little attention, and has never been examined in urban animals. The first objective of this thesis was to examine the relationship between exploratory personality and habituation in a novel environment, and determine whether variation at the individual-level is predicted by urbanization. The second objective was to explore the association between exploratory personality and spatial cognition within scatter hoarders, and assess spatial memory along an urban gradient. At the individual-level, I report significant inter-individual differences in exploratory personality and habituation. I found evidence that fast initial explorers tend to habituate in a novel environment over time while slow explorers do not. There was no significant relationship between exploratory personality and spatial cognition within individuals. At the population level, urbanization did not significantly predict habituation or spatial cognition. I do report a significant positive relationship between urbanization and exploration. Overall, I conclude that urban individuals are significantly faster explorers, but are not more behaviourally plastic and do not show differences in spatial memory. Further work examining personality, cognition, and plasticity within individuals is needed to determine whether these traits have implications for populations under different environmental conditions.