Memória Transacional tem se demonstrado um paradigma promissor na implementação de aplicações concorrentes sob memória compartilhada que busquem evitar um modelo de sincronização baseado em locks. Em vez de sujeitar a execução a um acesso exclusivo com base no valor de um lock que é compartilhado por threads concorrentes, uma aplicação sob Memória Transacional tenta executar seções críticas de modo otimista, desfazendo as modificações no caso de um conflito de acesso à memória. Entretanto, apesar de a abordagem baseada em locks ter adquirido um número significativo de ferramentas automatizadas para a depuração, profiling e otimização automatizados (por ser uma das técnicas de sincronização mais antigas e mais bem pesquisadas), o campo da Memória Transacional ainda é comparativamente recente, e programadores frequentemente precisam adaptar manualmente suas aplicações transacionais ao encontrar problemas de eficiência. Este trabalho propõe um sistema no qual o profiling de código em uma implementação de Memória Transacional simulada é utilizado para caracterizar uma aplicação transacional, formando a base para uma parametrização automatizada do respectivo sistema especulativo para uma execução eficiente do código em questão. Também é proposta uma abordagem de escalonamento de threads guiado por profiling em uma implementação de Memória Transacional baseada em software, usando dados coletados pelo profiler para prever a probabilidade de conflitos e determinar que thread escalonar com base nesta previsão. São apresentados os resultados de experimentos sob ambas as abordagens. / Transactional Memory has shown itself to be a promising paradigm for the implementation of shared-memory concurrent applications that eschew a lock-based model of data synchronization. Rather than conditioning exclusive access on the value of a lock that is shared across concurrent threads, Transactional Memory attempts to execute critical sections optimistically, rolling back the modifications in the event of a data access conflict. However, while the lock-based approach has acquired a significant body of debugging, profiling and automated optimization tools (as one of the oldest and most researched synchronization techniques), the field of Transactional Memory is still comparably recent, and programmers are usually tasked with an unguided manual tuning of their transactional applications when facing efficiency problems. We propose a system in which code profiling in a simulated hardware implementation of Transactional Memory is used to characterize a transactional application, which forms the basis for the automated tuning of the underlying speculative system for the efficient execution of that particular application. We also propose a profile-guided approach to the scheduling of threads in a software-based implementation of Transactional Memory, using collected data to predict the likelihood of conflicts and determine what thread to schedule based on this prediction. We present the results achieved under both designs.

The purpose of this study was to explore the relationship between faculty perceptions, selected demographics, implementation of elements of transactional distance theory and online web-based course completion rates. This theory posits that the high transactional distance of online courses makes it difficult for students to complete these courses successfully; too often this is associated with low completion rates. Faculty members play an indispensable role in course design, whether online or face-to-face. They also influence course delivery format from design through implementation and ultimately to how students will experience the course. This study used transactional distance theory as the conceptual framework to examine the relationship between teaching and learning strategies used by faculty members to help students complete online courses. Faculty members’ sex, number of years teaching online at the college, and their online course completion rates were considered. A researcher-developed survey was used to collect data from 348 faculty members who teach online at two prominent colleges in the southeastern part of United States. An exploratory factor analysis resulted in six factors related to transactional distance theory. The factors accounted for slightly over 65% of the variance of transactional distance scores as measured by the survey instrument. Results provided support for Moore’s (1993) theory of transactional distance. Female faculty members scored higher in all the factors of transactional distance theory when compared to men. Faculty number of years teaching online at the college level correlated significantly with all the elements of transactional distance theory. Regression analysis was used to determine that two of the factors, instructor interface and instructor-learner interaction, accounted for 12% of the variance in student online course completion rates. In conclusion, of the six factors found, the two with the highest percentage scores were instructor interface and instructor-learner interaction. This finding, while in alignment with the literature concerning the dialogue element of transactional distance theory, brings a special interest to the importance of instructor interface as a factor. Surprisingly, based on the reviewed literature on transactional distance theory, faculty perceptions concerning learner-learner interaction was not an important factor and there was no learner-content interaction factor.

A área de gerenciamento de processos de negócio apresenta-se ativa e tem recebido atenção tanto da comunidade de pesquisa como da indústria. Uma das principais preocupações nessa área é a escolha da melhor abordagem para modelagem e implementação de processos de negócio. Atualmente, organizações possuem processos de negócio com complexas estruturas que são reavaliados e ajustados com frequência, exigindo flexibilidade das linguagens para modelagem de processos. Além disso, processos de negócio atuais também exigem ambientes para implementação capazes de garantir confiabilidade na execução de instâncias do processo modelado, especialmente em caso de falhas. Embora diversos modelos transacionais tenham sido propostos com o objetivo de garantir propriedades transacionais adaptadas ao contexto de processos de negócio, a implementação de processos transacionais ainda oferece um cenário com desafios teóricos e práticos. Neste trabalho apresentamos uma implementação da abordagem WED-flow para controle de processos transacionais. A WED-flow é uma abordagem que combina conceitos de modelos transacionais avançados, eventos e estados de dados com o objetivo principal de reduzir a complexidade no tratamento de exceções. A ferramenta de software desenvolvida é capaz de controlar a execução de instâncias de processos de negócio, permite a evolução incremental do modelo projetado e ainda disponibiliza a estrutura necessária para apoiar a implementação de mecanismos de recuperação para tratar interrupções em instâncias causadas por exceções. / Business processes management is an active area which have received increased attention from research and industry communities. A major concern is the selection of the best approach for modeling and implementing business processes. Nowadays, organizations have business processes with complex structures, which are reevaluated and adjusted frequently, requiring flexibility from modeling languages. In addition, current business processes also require implementation environments capable of ensuring execution reliability, especially in case of failures. Although several transactional models have been proposed in order to guarantee transactional properties adapted to the context of business processes, the implementation of transactional processes still offers a scenario with several theoretical and practical challenges. In this work, we present an implementation of WED-flow approach for controlling transactional processes. WED-flow is an approach which combines the concepts of advanced transactional models, events and data states for the purpose of reducing exception handling complexity. The developed software tool is able of controlling the execution of business processes instances, allows incremental evolution of the designed model and also provides the necessary structure to support recovery mechanisms implementation to handle instances interruptions caused by exceptions.

Bullying is a pervasive event that affects individuals in a variety of ways. For example, bullied individuals display an array of psychological and related psychosocial problems associated with victimization. There is a push for a transformation in the bullying paradigm to include the psychological and psychosocial symptomologies of both the perpetrator and victim. This study addressed the lack of qualitative research on coping mechanisms for adult victims of bullying. Due to the pervasive nature of the phenomena, the following was explored: (a) descriptions of bullying as expressed by adult victims, (b) adult victims' coping processes and methods, and (c) adult victims' emotional responses to being bullied. A qualitative phenomenological research approach was applied to understand the lived experiences of this population. The theoretical framework was based on Folkman and Lazarus's transactional model of stress and coping. Eight individuals participated in the study and face-to-face interviews were conducted with each participant. Based on the results of interviews and thematic analysis, the majority of participants (34%) reported that job-related demands and coercion such as social exclusion, cyberthreats, verbal abuse, sexual abuse, job-related intimidation, and physical harm were the main forms of bullying experienced. The coping process adopted by 62% of the participants was to remain calm during the bullying incident. However, 62% used retaliatory confrontation as their main coping method. Mental stress was the main emotional response to bullying. The findings of this study can inform the adoption of positive social change policy actions that promote resiliency among bullied adults at the community level and within organizational settings.

Background It is believed that the fourth industrial revolution (4IR) will bring about unprecedented change to the world, ultimately having such a deep impact that some argue it may change human life at its core. It is believed that many organisations will not survive the radical disruption that will ensue. On the contrary, some authors have argued that the 4IR will bring about many benefits and opportunities for organisations, as with previous revolutions, provided it is managed effectively by business leaders. Rationale for the research study There is a growing consensus that existing leadership styles and management practices may not be suitable for organisational performance for the 4IR. It has, therefore, been suggested that different theories, models or approaches to leadership will be required if organisations are to remain competitive and sustainably successful in a business context that will look very different to what leaders have been accustomed to. It is argued here that Leadership 4.0 and innovative management practices, may have merit in this context. Aim of the study This present study was an exploratory attempt to investigate the relationship between Leadership 4.0, innovative management practices and organisational performance capabilities for the 4IR. For the purposes of this study, 1) a range of leadership theories/models/approaches/styles, including Transactional Leadership, Transformational Leadership and Leadership 4.0; 2) innovative management practices, including human resource management, organising and information sharing, risk management and stakeholder management as they compare to the old and new economy; and 3) organisational performance capabilities, including human capital, digital risk management and business model value creation were investigated. Research Design, Sampling and realised sample An exploratory research design was followed, utilising a mixed method approach. A crosssectional approach was taken to data collection, with a composite questionnaire designed for the purpose of this study utilised to collect data. A realised sample of n=61 respondents, mainly 4 from local, privately owned, knowledge-intensive organisations was obtained using a convenience sampling approach. Statistical analyses Pearson correlation and hierarchical multiple regression were utilised to estimate the relationships among the abovementioned constructs. Mediation analyses utilising the PROCESS macro was employed to test whether the relationship between Leadership 4.0 and organisational performance capabilities was mediated through innovative management practices. Results Statistically significant positive relationships were found between Leadership 4.0, Innovative Management Practices and Organisational Performance Capabilities. A regression model indicated that Leadership styles statistically significantly predicted the most variance in Organisational Performance Capabilities. Results further determined that Transactional Leadership explained a unique variance in risk management and digital risk management. Lastly, the test for mediation indicated that innovative management practices partially mediated the relationship between Leadership 4.0 and organisational performance capabilities. Findings: Findings from the results supported various discussions and studies in the literature and in practice that leadership, specifically Leadership 4.0, is an important element to navigating the uncertainties and challenges presented by the 4IR. Further evidence was also found in support of contingent leadership theories. Managerial Implications The findings of the present research study holds a practical implication for organisations in that the findings support the literature suggesting that leadership is a key element in organisational performance capabilities, specifically for survival and sustainability for the 4IR. The findings further contributes to a growing body of knowledge surrounding the 4IR, leadership, innovative management practices and organisational performance fields of research.

El presente trabajo de investigación tiene como fin estudiar la relación entre el liderazgo y el desempeño financiero del área comercial, en específico en la fuerza de ventas en Lima de cada una de las empresas a evaluar, dentro del sector asegurador. Para ello, se analizarán los siguientes estilos de liderazgo: Transaccional, Transformacional y Situacional. Cabe indicar que no estamos tomando en cuenta el estilo de liderazgo laissez-faire, ya que, partiendo de las investigaciones analizadas, llegamos a la conclusión que no existe un único estilo de liderazgo sino más bien siempre se da una mezcla entre ellos, dependiendo de cada situación presentada. Con relación al desempeño financiero abordaremos los indicadores de rentabilidad como ROI y Rendimiento sobre las ventas. Dentro del sector en el cual se basará la siguiente investigación encontramos a las principales compañías aseguradoras, conformadas por Rímac Seguros, Pacífico y Mapfre, ya que entre las 3 albergan aproximadamente el 60% de la participación del mercado nacional en los últimos ocho años. Finalmente, optamos por investigar esta relación puesto que actualmente no existen diversas investigaciones que evalúen este tipo de variables de manera conjunta; empero existen investigaciones que si evalúan el liderazgo con diversas variables ya sea productividad, desempeño, motivación, mas no con desempeño financiero que es la finalidad de esta investigación. / The main purpose of this research work is to study the relationship between leadership and financial performance of the sales force in each of the companies to be evaluated in Lima, within the insurance sector. For this, the leadership styles that are analyzed are the following: Transactional, Transformational and Situational. It should be noted that we are not taking in account the laissez-faire leadership style, since, based on the analyzed investigations, we come to the conclusion that there is no single leadership style, but rather there is always a mixture between them, depending on the situation presented. In accordance to the financial performance, we are considering the profitability indicators, such as ROI and performance on sales. Within the sector on which the following research will be based, we are considering the main insurance companies in Peru, such as Rimac, Pacifico and Mapfre since among the three they house around 60% of the market share in Peru in the last eight years. Finally, we chose to investigate this relationship since there are currently not many researches that evaluate these types of variables jointly. However, there are researches that evaluate leadership with other similar variables, such as productivity, performance, motivation, among others, but not specifically related to financial performance, which is the main purpose of this investigation. / Tesis

Master’s thesis focuses on the proposal of using the concept of total remuneration in the remuneration of employees in a selected company. The thesis is divided into three parts, the theoretical part of the thesis includes factual research for easier understanding of the issue. The practical part analyzes the current state of remuneration of employees in the company and the third part is a solution proposal and its economic evaluation.

The purpose of the study was to investigate any relationship between an established group of senior military officers' leadership styles and their personal values as a predictor of future effective leadership. The study evaluated the relationship between Nelson's (1989) 80-item Personal Values Profile (PVP) and Bass and Avolio's (2004) full-range leadership model (MLQ 5X) as a means to predict effective leadership. The respondents to the surveys were a unique sample of convenience consisting of 1978 graduates of the United States Naval Academy who had spent 30 years as officers in either the U.S. Navy or U.S. Marine Corps. The results of the MLQ 5X indicated that the group of career military officers scored higher than Bass and Avolio's normative group in seven of the nine leadership styles and in all three of the leadership outcomes. The two leadership styles in which the career military officers scored lower than the normative group were in the passive-avoidant or non-leadership categories. This sample group scored higher than the normative group in every category of transactional leadership styles as well as in every category of transformational leadership styles. Linear regression analysis of the full-range leadership model against the Personal Values Profile identified a moderate predictor of effective leadership based on personal values when transactional leadership and transformational leadership were combined. A second predictor for effective leadership was found when only transformational leadership was evaluated.

This study examines effective leadership qualities in the world of professional ice-hockey. The study builds on semi-structured interviews where three coaches and two general managers participated. The paper has an inductive approach where a thematic analysis lay the foundation for a theoretical explanation. Results indicate that the leader needs to handle stakeholders in an innovative way, have a dynamic relationship between a transactional and transformational leadership, and finally, the leader's experience and emotional intelligence are two crucial factors in developing a successful and effective leadership. Practical implications for findings in this study are discussed along with recommendations for future research.

Syftet med studien är att fånga ledarens upplevelser och utmaningar kopplat till deras ledarskap och kommunikationen under pandemin. Studien bidrar med kunskap om hur olika ledares ledarskap och kommunikation har påverkats av pandemin, för att sedan dra lärdomar från det till framtida kriser. Det går tydligt att se utifrån resultatet i studien att ledarna har stött på utmaningar under pandemin i kommunikationen med medarbetarna som har tvingat ledarna att förändra sitt ledarskap och sättet de kommunicerar på med medarbetarna. Studien består av sex semistrukturerade intervjuer med personer med ledande positioner inom offentlig sektor i Sverige. Intervjuerna har sedan transkriberats och analyserats utifrån ledarskaps och kommunikationsteorier. Respondenternas svar visar att de upplever att de i egenskap av ledare har tappat delar av den fysiska och sociala kontakten med medarbetarna men upplever samtidigt att de har blivit mer tillgängliga och att mötena har blivit effektivare. Respondenterna har förändrat sitt ledarskap och kommunikation till följd av pandemin. Det går att utläsa då respondenternas ledarskap och kommunikation har förändrats genom att de har blivit mer tydliga och raka gentemot medarbetarna som en konsekvens av pandemin. / The purpose of the study is to capture the leader's experiences and challenges linked to their leadership and communication during the pandemic. The study will contribute knowledge about how different leaders' leadership and communication have been affected by the pandemic, and then draw lessons from it for future crises. It is clear from the results of the study that the leaders have encountered challenges during the pandemic in communication with the employees which has forced the leaders to change their leadership and the way they communicate with the employees. The study consists of six semi-structured interviews with people with leading positions in the public sector in Sweden. The interviews have since been transcribed and analyzed based on leadership and communication theories. The respondents' answers show that they, as leaders, have lost parts of the physical and social contact with the employees, but at the same time feel that they have become more accessible and that the meetings have become more efficient. The respondents have changed their leadership and communication as a result of the pandemic. This can be read as the respondents' leadership and communication have changed as they have become clearer and more direct towards the employees as a consequence of the pandemic.