Friends, family, and family friends:Predicting friendships of Dutch women

Friends are an important source of well-being but people differ in who they consider to be friends. With a unique quantitative test of such differences based on 17,650 social relations of 706 Dutch women (aged 18–41), of whom 40% were considered friends, we examined (a) which kind of personal relations were typically identified as friends (e.g., family, colleague), (b) how this linked to relationship closeness, face-to-face and non-face-to-face contact, and (c) whether these relationship characteristics of friendships differed with age. Most friends were met at school (>70%) and 20% of family were considered friends. Friendships were often close relationships with more non-face-to-face contact, while meeting in person was less predictive. Relatively older women reported fewer friends. Even in this homogenous sample with multiple measures of tie strength, friendships were difficult to predict and often overlapped with other social roles, meaning that researchers should be careful in using friendship as distinct category

Empowering Community Resilience to climate Change in Cameroon using Technology-enhanced Learning

Located in Central Africa, Cameroon is considered the driving force of the sub-region due to its strategic location in the center of the African continent. During the last five years, the country has been under the constant threat of a large range of disasters like floods, droughts, landslides, epidemics, etc. In such a context, the government is implementing several strategies for Disaster Risk Reduction in the country. Under the lead of the Ministry of Territorial Administration and Decentralization, the Directorate of Civil Protection, coordinates Disaster Risk Reduction activities through a network of over 379 decentralized institutions and international partners (Ayanji, 2004). Despite a high level of deployment, these activities still prove to have a low level of efficiency on the field. Results from the literature review suggest that this may be due to strategies for public education and public awareness that do not mirror stakeholders’ needs, capacities, and background. There is a need to: (1) identify the failures of the pre-existing public education and public awareness strategy, (2) assess the educational needs and capacities of each category of actors, (3) select adequate instructional methods and tools and (4) ensure the effectiveness and sustainability of the newly proposed strategy. The aim of this work, which is a three-year PhD project funded by the AXA Research Fund, is therefore to propose a public education and public awareness model adapted to the Cameroonian context, using Technology Enhanced Learning to strengthen capacities and competencies of stakeholders involved in the problem of climate change. The study makes use of a mixed method approach. From the literature review, four categories of actors involved into the climate change education process in the country have first been identified namely (1) government, (2) educational institutions, (3) Non-Governmental Organizations and (4) communities. A sample population has been driven from each category using the Respondent Driven Sampling method. Then data were collected during a six-month field trip in Cameroon, using semi-structured interviews (McNamara, 1999), qualitative survey (Fowler, 2009), direct observation (Bernard, 2006) and focus group discussion (Krueger & Casey, 2009). Findings from data analyses, performed using Epi info software for quantitative data and MAXQDA software for qualitative data show that: the educational strategy is not clearly defined; there is a lack of adequate infrastructures; technologies available are not properly used: either they are not evenly accessible, or when accessible they do not match learners’ capacities and competencies. Finally, quality criteria for the evaluation of the existing educational strategy are not met, thus failing to ensure it sustainability. The conceptual solution proposed in this work makes use of the concept of learning communities, especially Community of Practice as proposed by Lave and Wenger (1991) to develop an information and knowledge sharing community system to establish best practices for improving community resilience to climate change impact. This Community of Practice will operate essentially offline with a selected domain, a well-defined and structured community, and a practice that makes use of identified technologies already available among communities and, most importantly, that mirrors the Cameroonian socio-cultural context. One unexpected factor that had to be taken into consideration while determining adequate technology tools, is the actors’ perception, or rather say actors’ (un)acceptance of “new technologies”, which render the design of the instructional model quite challenging.Kamerun ist ein Land in Zentralafrika. Aufgrund seiner strategischen Lage in der Mitte des afrikanischen Kontinents, gilt das Land als die treibende Kraft der Sub-Region. Während der letzten fünf Jahre wurde Kamerun Opfer von ständigen Bedrohungen einer Vielzahl von Katastrophen wie Überschwemmungen, Dürren, Erdrutsche, Epidemien, usw. In diesem Kontext hat die Regierung eine Reihe von Strategien zur Verringerung der Katastrophenrisiken imstande gebracht. Dies wurde unter der Leitung vom Ministerium der territorialen Verwaltung und Dezentralisierung und vom Amt für Katastrophenschutz durchgeführt. Weiterhin nahmen mehr als 379 dezentrale Institutionen und internationale Partner an diese bedeutende Aktion teil (Ayanji, 2004). Die bei diesem Großeinsatz getroffenen Maßnahmen haben aber bisher eine sehr geringe Effizienz auf dem Feld gebracht. Eine nähere Betrachtung im Zusammenspiel mit entsprechender Literatur lassen folgendes vermuten: die Strategien zur Sensibilisierung sind auf die Bedürfnisse, Kapazitäten und Hintergründe der Akteure nicht angepasst. Demnach sind folgende Tatsachen in Betracht zu ziehen: (1) Identifikation der Ausfälle der bevorstehenden Awareness-Strategie; (2) Bewertung den pädagogischen Bedürfnissen und Kapazitäten der einzelnen Kategorien von Akteuren; (3) Auswahl geeigneter Unterrichtsmethoden und Tools; (4) Gewährleisten der Wirksamkeit und Nachhaltigkeit der neu vorgeschlagenen Strategie. Diese Arbeit stammt aus einem dreijährigen Promotionsprojekt finanziert von der AXA Research Fund. Das Ziel der Arbeit ist der Vorschlag eines Awareness-Modells, das an dem kamerunischen Kontext angepasst ist, und das die Bildungstechnologie zur Stärkung der Kapazitäten und Kompetenzen der beteiligten Akteure des Klimawandels nutzt. Aus der Literatur sind vier Kategorien von Akteuren identifiziert worden: Die Regierung, Bildungseinrichtungen, nationale und internationale Organisationen, Gemeinschaften. Die Studie folgt einer Mixed-Method Forschung. Eine Stichprobe wurde aus jeder Kategorie von Akteuren mit Schneeballauswahl-Methode gezogen. Dann wurden Daten während einer 6-monatigen Studienreise in Kamerun gesammelt. Diese wurde in Begleitung mit semi-strukturierten Interview (McNamara, 1999), qualitativen Erhebung (Fowler, 2009), direkter Beobachtung (Bernard, 2006) und Gruppendiskussion (Krueger & Casey, 2009). Die Daten wurden analysiert mit Epi-info Software für quantitative Daten und MAXQDA Software für qualitative Daten. Die Ergebnisse zeigen Folgendes: - Die pädagogische Strategie ist nicht klar definiert - Mangel an angemessenen Infrastrukturen - Die verfügbaren Technologien sind nicht vorhanden und teilweise falsch eingesetzt. Sie sind entweder nicht gleichmäßig verwendet oder sie stimmen mit den Fähigkeiten der Lernenden nicht überein. - Qualitätskriterien für die Bewertung der bestehenden Ausbildungsstrategie sind nicht erfüllt Die vorgeschlagene konzeptionelle Lösung, die in dieser Arbeit verwendet wird, benutzt das Konzept der Learning Communities, insbesondere "Community of Practice" wie von Lave und Wenger (1991) beschrieben. Ziel ist es, ein Informations- und Wissensaustausch Community-System zur Förderung bewährter Verfahren im Sinne der Verbesserung der Gemeinschaft gegenüber Auswirkungen des Klimawandels zu schaffen. Diese Community of Practice wird offline mit einer ausgewählten Domäne, eine gut definierte und strukturierte Gemeinschaft, und eine gut gestaltete Praxis funktionieren. Ein unerwarteter Faktor, der bei der Bestimmung der angemessenen Technologie-Tools berücksichtigt werden müsste, ist die Wahrnehmung der Akteure oder besser gesagt die (Un-)Akzeptanz der "Neuen Technologien" durch die Akteure. Dies macht das Design des Instruktionsmodells zu einer richtigen Herausforderung

Understanding the link between changes in social support and changes in outcomes with the sociometric badge

Thesis (Ph. D.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, June 2011.Cataloged from PDF version of thesis. "June 2011."Includes bibliographical references (p. 138-154).The goal of this thesis is to show that social support created through face-to-face interaction is a driving factor in a number of important outcomes. Through a series of studies we show that social support, operationalized using face-to-face network constraint (information clearing), is positively related to important outcomes such as productivity and job satisfaction and that changes in social support are positively related to changes in these outcomes. We then discuss a two-phase study where we experimentally modify break structure to increase network constraint and demonstrate a corresponding positive change in outcomes. Finally, we show that network constraint is also qualitatively related to outcomes and is an effective proxy for social support. To conclude we situate this research under a larger framework that provides direction for future research.by Benjamin Nathan Waber.Ph.D

Strategies for Unbridled Data Dissemination: An Emergency Operations Manual

This project is a study of free data dissemination and impediments to it. Drawing upon post-structuralism, Actor Network Theory, Participatory Action Research, and theories of the political stakes of the posthuman by way of Stirnerian egoism and illegalism, the project uses a number of theoretical, technical and legal texts to develop a hacker methodology that emphasizes close analysis and disassembly of existent systems of content control. Specifically, two tiers of content control mechanisms are examined: a legal tier, as exemplified by Intellectual Property Rights in the form of copyright and copyleft licenses, and a technical tier in the form of audio, video and text-based watermarking technologies. A series of demonstrative case studies are conducted to further highlight various means of content distribution restriction. A close reading of a copyright notice is performed in order to examine its internal contradictions. Examples of watermarking employed by academic e-book and journal publishers and film distributors are also examined and counter-forensic techniques for removing such watermarks are developed. The project finds that both legal and technical mechanisms for restricting the flow of content can be countervailed, which in turn leads to the development of different control mechanisms and in turn engenders another wave of evasion procedures. The undertaken methodological approach thus leads to the discovery of on-going mutation and adaptation of in-between states of resistance. Finally, an analysis of various existent filesharing applications is performed, and a new Tor-based BitTorrent tracker is set up to strengthen the anonymization of established filesharing methods. It is found that there exist potential de-anonymization attacks against all analyzed file-sharing tools, with potentially more secure filesharing options also seeing less user adoption

Experience of blended learning at King Khalid University in Saudi Arabia among students, lecturers and academic leaders : implications for educational planning and learning process strategy

This research explores the experiences of blended learning and its implication for higher education planning at King Khalid University (KKU) within the context of the Kingdom of Saudi Arabia (KSA). The study is based on the perspectives of key stakeholders in KSA comprising academic leaders, lecturers and students. KKU was chosen to conduct the case study, and is where the research investigated the views and perceptions of its students, lecturers and academic leaders in order to ascertain their experiences and perceptions of blended learning, and examine its impact. The study is motivated by the need to get insight into the status and implications of blended learning in KSA since it is at an early phase of implementation. The study seeks to provide a contextual assessment of blended learning by exploring the benefits and challenges present in the higher education ecosystem. A mixed method approach has been adopted in which quantitative and qualitative methods have been applied. Data collection includes a survey questionnaire involving 76 students, interviews with six of them, and five further interviews with lecturers and academic leaders. The findings of the study reveal the perceived level of proficiency with blended learning devices affects students’ perceptions of blended learning; that it particularly enhances interactions and communication between lecturers and students since learning was not limited to the physical classroom settings only. Although it saved time for the students and their lecturers at KKU, blended learning was constrained by a weak infrastructure, such as a weak internet connection and lack of devices that limits its applicability. These challenges affected the interaction of the students learning through blended learning, and may be an impediment to its effectiveness in higher education learning. It is imperative that the aforementioned challenges that students and lecturers encounter in blended learning be resolved to motivate students who may be resigned to face-to-face classroom learning due to these challenges. A positive perception of blended learning is informed by its perceived usefulness to lecturers and students notwithstanding the challenges that make students prefer traditional modes of learning. However, given the benefits that the KKU learning community perceives in blended learning, it is imperative that the administrators move swiftly to improve the underlying infrastructure for blended learning to make it more appealing to students. This may motivate more students to embrace blended learning, as it provides benefits of both classroom and distance learning. There is also a need for improving awareness and training of lecturers and students in order to prepare them more adequately for effectively utilising the technology to maintain a blended learning environment

On Personal Storage Systems: Architecture and Design Considerations

Actualment, els usuaris necessiten grans quantitats d’espai d’emmagatzematge remot per guardar la seva informació personal. En aquesta dissertació, estudiarem dues arquitectures emergents de sistemes d’emmagatzematge d’informació personal: els Núvols Personals (centralitzats) i els sistemes d’emmagatzematge social (descentralitzats). A la Part I d'aquesta tesi, contribuïm desvelant l’operació interna d’un Núvol Personal d’escala global, anomenat UbuntuOne (U1), incloent-hi la seva arquitectura, el seu servei de metadades i les interaccions d’emmagatzematge de dades. A més, proporcionem una anàlisi de la part de servidor d’U1 on estudiem la càrrega del sistema, el comportament dels usuaris i el rendiment del seu servei de metadades. També suggerim tota una sèrie de millores potencials al sistema que poden beneficiar sistemes similars. D'altra banda, en aquesta tesi també contribuïm mesurant i analitzant la qualitat de servei (p.e., velocitat, variabilitat) de les transferències sobre les REST APIs oferides pels Núvols Personals. A més, durant aquest estudi, ens hem adonat que aquestes interfícies poden ser objecte d’abús quan són utilitzades sobre els comptes gratuïts que normalment ofereixen aquests serveis. Això ha motivat l’estudi d’aquesta vulnerabilitat, així com de potencials contramesures. A la Part II d'aquesta dissertació, la nostra primera contribució és analitzar la qualitat de servei que els sistemes d’emmagatzematge social poden proporcionar en termes de disponibilitat de dades, velocitat de transferència i balanceig de la càrrega. El nostre interès principal és entendre com fenòmens intrínsecs, com les dinàmiques de connexió dels usuaris o l’estructura de la xarxa social, limiten el rendiment d’aquests sistemes. També proposem nous mecanismes de manegament de dades per millorar aquestes limitacions. Finalment, dissenyem una arquitectura híbrida que combina recursos del Núvol i dels usuaris. Aquesta arquitectura té com a objectiu millorar la qualitat de servei del sistema i deixa als usuaris decidir la quantitat de recursos utilitzats del Núvol, o en altres paraules, és una decisió entre control de les seves dades i rendiment.Los usuarios cada vez necesitan espacios mayores de almacenamiento en línea para guardar su información personal. Este reto motiva a los investigadores a diseñar y evaluar nuevas infraestructuras de almacenamiento de datos personales. En esta tesis, nos centramos en dos arquitecturas emergentes de almacenamiento de datos personales: las Nubes Personales (centralización) y los sistemas de almacenamiento social (descentralización). Creemos que, pese a su creciente popularidad, estos sistemas requieren de un mayor estudio científico. En la Parte I de esta disertación, examinamos aspectos referentes a la operación interna y el rendimiento de varias Nubes Personales. Concretamente, nuestra primera contribución es desvelar la operación interna e infraestructura de una Nube Personal de gran escala (UbuntuOne, U1). Además, proporcionamos un estudio de la actividad interna de U1 que incluye la carga diaria soportada, el comportamiento de los usuarios y el rendimiento de su sistema de metadatos. También sugerimos mejoras sobre U1 que pueden ser de utilidad en sistemas similares. Por otra parte, en esta tesis medimos y caracterizamos el rendimiento del servicio de REST APIs ofrecido por varias Nubes Personales (velocidad de transferencia, variabilidad, etc.). También demostramos que la combinación de REST APIs sobre cuentas gratuitas de usuario puede dar lugar a abusos por parte de usuarios malintencionados. Esto nos motiva a proponer mecanismos para limitar el impacto de esta vulnerabilidad. En la Parte II de esta tesis, estudiamos la calidad de servicio que pueden ofrecer los sistemas de almacenamiento social en términos de disponibilidad de datos, balanceo de carga y tiempos de transferencia. Nuestro interés principal es entender la manera en que fenómenos intrínsecos, como las dinámicas de conexión de los usuarios o la estructura de su red social, limitan el rendimiento de estos sistemas. También proponemos nuevos mecanismos de gestión de datos para mejorar esas limitaciones. Finalmente, diseñamos y evaluamos una arquitectura híbrida para mejorar la calidad de servicio de los sistemas de almacenamiento social que combina recursos de usuarios y de la Nube. Esta arquitectura permite al usuario decidir su equilibrio entre control de sus datos y rendimiento.Increasingly, end-users demand larger amounts of online storage space to store their personal information. This challenge motivates researchers to devise novel personal storage infrastructures. In this thesis, we focus on two popular personal storage architectures: Personal Clouds (centralized) and social storage systems (decentralized). In our view, despite their growing popularity among users and researchers, there still remain some critical aspects to address regarding these systems. In the Part I of this dissertation, we examine various aspects of the internal operation and performance of various Personal Clouds. Concretely, we first contribute by unveiling the internal structure of a global-scale Personal Cloud, namely UbuntuOne (U1). Moreover, we provide a back-end analysis of U1 that includes the study of the storage workload, the user behavior and the performance of the U1 metadata store. We also suggest improvements to U1 (storage optimizations, user behavior detection and security) that can also benefit similar systems. From an external viewpoint, we actively measure various Personal Clouds through their REST APIs for characterizing their QoS, such as transfer speed, variability and failure rate. We also demonstrate that combining open APIs and free accounts may lead to abuse by malicious parties, which motivates us to propose countermeasures to limit the impact of abusive applications in this scenario. In the Part II of this thesis, we study the storage QoS of social storage systems in terms of data availability, load balancing and transfer times. Our main interest is to understand the way intrinsic phenomena, such as the dynamics of users and the structure of their social relationships, limit the storage QoS of these systems, as well as to research novel mechanisms to ameliorate these limitations. Finally, we design and evaluate a hybrid architecture to enhance the QoS achieved by a social storage system that combines user resources and cloud storage to let users infer the right balance between user control and QoS

Aging Well: How Subjective Age, Playfulness, and Depression Influence Quality of Life Among Older Adults

Given the growing population of aging adults, there is a need for research examining factors that enhance quality of life for older adults (QoL; Colby & Ortman, 2014). Changes in health, relationships, support systems, and social identity are inevitable throughout the lifespan. Therefore, research focused on lessening the negative effects of changes due to aging while also improving QoL is warranted. As such, the aim of the current research study was to examine the extent to which subjective age (SA; how old or young an individual feels), playfulness (PF; the ability to frame or reframe everyday situations to experience them as entertaining, intellectually stimulating, and/or personally interesting [Proyer, 2015, p. 93-94]), and depression (an emotional state ranging from mild discouragement to feelings of extreme despair [CDC, 2017; Corsini, 2002]) predict QoL ( a person\u27s sense of well-being that stems from satisfaction or dissatisfaction with the areas of life that are important to him or her [Ferrans, 1985, p. 15]) among adults over the age of 55. Using convenience sampling with eligibility requirements, adults (N = 1,315) 55 and older and who spoke and read English were surveyed both face-to-face (F2F) and online (e.g., Amazon Mechanical Turk and a senior educational program). Standard multiple regression was utilized, and results identified a statistically significant model with the variable of depression predicting the largest unique contribution to the model, while PF predicted a small, statistically significant contribution. Subjective age did not statistically contribute to the prediction. Implications from the findings that relate to counselors, counselor educators, and researchers are provided. In addition, the findings provide guidance and a new perspective on variables associated with QoL and aging adults

Nursing and Society

The year 2020 is considered by the World Health Organization to be the International Year of the Nurse and Midwife. This book supports the visibility of the contribution of nurses to society. We have included 30 articles on high-quality original research or reviews that provide solid new discoveries that expand current knowledge