Fully-reflective VMs for Ruling Software Adaptation

It has become common for software systems to require or benefit from dynamic adaptation, i.e., to modify their behavior while they are running. Among the existing approaches to this problem, language-level solutions are appealing for scenarios in which fine-grained adaptation is needed, i.e., when the granularity of the modifications is that of individual objects, or for small applications where an architectural solution based on complex middleware is overkill. However, there is no consensus on which of the existing language-level approaches to adopt. A recent survey on self-adaptive systems asks 9: Is it possible to adopt a single paradigm providing all required abstractions to implement adaptive systems

Sensitivity analysis in a scoping review on police accountability : assessing the feasibility of reporting criteria in mixed studies reviews

In this paper, we report on the findings of a sensitivity analysis that was carried out within a previously conducted scoping review, hoping to contribute to the ongoing debate about how to assess the quality of research in mixed methods reviews. Previous sensitivity analyses mainly concluded that the exclusion of inadequately reported or lower quality studies did not have a significant effect on the results of the synthesis. In this study, we conducted a sensitivity analysis on the basis of reporting criteria with the aims of analysing its impact on the synthesis results and assessing its feasibility. Contrary to some previous studies, our analysis showed that the exclusion of inadequately reported studies had an impact on the results of the thematic synthesis. Initially, we also sought to propose a refinement of reporting criteria based on the literature and our own experiences. In this way, we aimed to facilitate the assessment of reporting criteria and enhance its consistency. However, based on the results of our sensitivity analysis, we opted not to make such a refinement since many publications included in this analysis did not sufficiently report on the methodology. As such, a refinement would not be useful considering that researchers would be unable to assess these (sub-)criteria

Wide spectrum attribution: Using deception for attribution intelligence in cyber attacks

Modern cyber attacks have evolved considerably. The skill level required to conduct a cyber attack is low. Computing power is cheap, targets are diverse and plentiful. Point-and-click crimeware kits are widely circulated in the underground economy, while source code for sophisticated malware such as Stuxnet is available for all to download and repurpose. Despite decades of research into defensive techniques, such as firewalls, intrusion detection systems, anti-virus, code auditing, etc, the quantity of successful cyber attacks continues to increase, as does the number of vulnerabilities identified. Measures to identify perpetrators, known as attribution, have existed for as long as there have been cyber attacks. The most actively researched technical attribution techniques involve the marking and logging of network packets. These techniques are performed by network devices along the packet journey, which most often requires modification of existing router hardware and/or software, or the inclusion of additional devices. These modifications require wide-scale infrastructure changes that are not only complex and costly, but invoke legal, ethical and governance issues. The usefulness of these techniques is also often questioned, as attack actors use multiple stepping stones, often innocent systems that have been compromised, to mask the true source. As such, this thesis identifies that no publicly known previous work has been deployed on a wide-scale basis in the Internet infrastructure. This research investigates the use of an often overlooked tool for attribution: cyber de- ception. The main contribution of this work is a significant advancement in the field of deception and honeypots as technical attribution techniques. Specifically, the design and implementation of two novel honeypot approaches; i) Deception Inside Credential Engine (DICE), that uses policy and honeytokens to identify adversaries returning from different origins and ii) Adaptive Honeynet Framework (AHFW), an introspection and adaptive honeynet framework that uses actor-dependent triggers to modify the honeynet envi- ronment, to engage the adversary, increasing the quantity and diversity of interactions. The two approaches are based on a systematic review of the technical attribution litera- ture that was used to derive a set of requirements for honeypots as technical attribution techniques. Both approaches lead the way for further research in this field

Facilitating self-organization in non-hierarchical communities: a methodology for regeneration programs

Research purpose: As a by-product in the development of the Quality Management Systems, self-organized working groups were introduced and became a common practice in management. In the last ten years some authors – influenced by the developments in the study of Complex Systems – have reintroduced the self-organization concept as being the future of management. In this approach, the description of the mechanism driving this process has been explored to provide a method to facilitate the emergence of viable organisational structures and to support such organizational behaviour. This topic becomes more relevant in the present times when the community development is more locally oriented and the communities are being empowered to become more autonomous in the definition of the means and results they want to improve their quality of live. It is within this context that in order to facilitate self-organization processes – in a rural community engaged in a independent regeneration program –this research suggest the use of a model inspired in both cybernetics and the self-organization in a biological system. Methods: This thesis details the development of a three loops framework aimed to facilitate the self-organizing behaviour through the use of a Visualization - Planning - Reflective toolset (V-P Toolset). The framework was deployed within a case study organization (The XOOP) using an interpretivist philosophy of constructionism to guide the research. During its execution the researcher acted as both an observer and participant of the organisational change. Within the context of an action research project, the framework followed a multimethodology design where cybernetic and social tools of organizational analysis such as the Viable System Model (VSM), Narrative and Story-telling analysis and Social Network Analysis (SNA) provided a unique approach to the facilitation of self-organization and the mergence of viable organizational structures. Results: The VSM and the SNA were used to diagnose the organizational structure. The information provided by these tools was then contextualized within the Narrative and Story-telling analysis, identifying critical events in the evolution of the organization. This combination of tools provided insights about the self-organizing behaviour of the organization and the mechanism that facilitated (or impeded) the emergence of viable organizational structures throughout the evolution of the observed community.Conclusions: The introduction of a common language to describe the organization facilitated the endogenous creation of a shared mental model of the community. This representation of the organization made more efficient the exchange of information, the coordination of activities and the autonomous operation of the different working groups. Thus, the iterative loops of the V-P contributed to made this process more efficient and provided evidence about the convenience of the integration of the VSM with the SNA as organizational diagnostic tools

NASA Tech Briefs, February 1989

This issue contains a special feature on shaping the future with Ceramics. Other topics include: Electronic Components & and Circuits. Electronic Systems, Physical Sciences, Materials, Computer Programs, Mechanics, Machinery, Fabrication Technology, Mathematics and Information Sciences, and Life Sciences

A COMPARISON BETWEEN MOTIVATIONS AND PERSONALITY TRAITS IN RELIGIOUS TOURISTS AND CRUISE SHIP TOURISTS

The purpose of this paper is to analyze the motivations and the personality traits that characterize tourists who choose religious travels versus cruises. Participating in the research were 683 Italian tourists (345 males and 338 females, age range 18–63 years); 483 who went to a pilgrimage travel and 200 who chose a cruise ship in the Mediterranean Sea. Both groups of tourists completed the Travel Motivation Scale and the Big Five Questionnaire. Results show that different motivations and personality traits characterize the different types of tourists and, further, that motivations for traveling are predicted by specific —some similar, other divergent— personality trait

Edge and Big Data technologies for Industry 4.0 to create an integrated pre-sale and after-sale environment

The fourth industrial revolution, also known as Industry 4.0, has rapidly gained traction in businesses across Europe and the world, becoming a central theme in small, medium, and large enterprises alike. This new paradigm shifts the focus from locally-based and barely automated firms to a globally interconnected industrial sector, stimulating economic growth and productivity, and supporting the upskilling and reskilling of employees. However, despite the maturity and scalability of information and cloud technologies, the support systems already present in the machine field are often outdated and lack the necessary security, access control, and advanced communication capabilities. This dissertation proposes architectures and technologies designed to bridge the gap between Operational and Information Technology, in a manner that is non-disruptive, efficient, and scalable. The proposal presents cloud-enabled data-gathering architectures that make use of the newest IT and networking technologies to achieve the desired quality of service and non-functional properties. By harnessing industrial and business data, processes can be optimized even before product sale, while the integrated environment enhances data exchange for post-sale support. The architectures have been tested and have shown encouraging performance results, providing a promising solution for companies looking to embrace Industry 4.0, enhance their operational capabilities, and prepare themselves for the upcoming fifth human-centric revolution

Engineering Self-Adaptive Collective Processes for Cyber-Physical Ecosystems

The pervasiveness of computing and networking is creating significant opportunities for building valuable socio-technical systems. However, the scale, density, heterogeneity, interdependence, and QoS constraints of many target systems pose severe operational and engineering challenges. Beyond individual smart devices, cyber-physical collectives can provide services or solve complex problems by leveraging a “system effect” while coordinating and adapting to context or environment change. Understanding and building systems exhibiting collective intelligence and autonomic capabilities represent a prominent research goal, partly covered, e.g., by the field of collective adaptive systems. Therefore, drawing inspiration from and building on the long-time research activity on coordination, multi-agent systems, autonomic/self-* systems, spatial computing, and especially on the recent aggregate computing paradigm, this thesis investigates concepts, methods, and tools for the engineering of possibly large-scale, heterogeneous ensembles of situated components that should be able to operate, adapt and self-organise in a decentralised fashion. The primary contribution of this thesis consists of four main parts. First, we define and implement an aggregate programming language (ScaFi), internal to the mainstream Scala programming language, for describing collective adaptive behaviour, based on field calculi. Second, we conceive of a “dynamic collective computation” abstraction, also called aggregate process, formalised by an extension to the field calculus, and implemented in ScaFi. Third, we characterise and provide a proof-of-concept implementation of a middleware for aggregate computing that enables the development of aggregate systems according to multiple architectural styles. Fourth, we apply and evaluate aggregate computing techniques to edge computing scenarios, and characterise a design pattern, called Self-organising Coordination Regions (SCR), that supports adjustable, decentralised decision-making and activity in dynamic environments.Con lo sviluppo di informatica e intelligenza artificiale, la diffusione pervasiva di device computazionali e la crescente interconnessione tra elementi fisici e digitali, emergono innumerevoli opportunità per la costruzione di sistemi socio-tecnici di nuova generazione. Tuttavia, l'ingegneria di tali sistemi presenta notevoli sfide, data la loro complessità—si pensi ai livelli, scale, eterogeneità, e interdipendenze coinvolti. Oltre a dispositivi smart individuali, collettivi cyber-fisici possono fornire servizi o risolvere problemi complessi con un “effetto sistema” che emerge dalla coordinazione e l'adattamento di componenti fra loro, l'ambiente e il contesto. Comprendere e costruire sistemi in grado di esibire intelligenza collettiva e capacità autonomiche è un importante problema di ricerca studiato, ad esempio, nel campo dei sistemi collettivi adattativi. Perciò, traendo ispirazione e partendo dall'attività di ricerca su coordinazione, sistemi multiagente e self-*, modelli di computazione spazio-temporali e, specialmente, sul recente paradigma di programmazione aggregata, questa tesi tratta concetti, metodi, e strumenti per l'ingegneria di ensemble di elementi situati eterogenei che devono essere in grado di lavorare, adattarsi, e auto-organizzarsi in modo decentralizzato. Il contributo di questa tesi consiste in quattro parti principali. In primo luogo, viene definito e implementato un linguaggio di programmazione aggregata (ScaFi), interno al linguaggio Scala, per descrivere comportamenti collettivi e adattativi secondo l'approccio dei campi computazionali. In secondo luogo, si propone e caratterizza l'astrazione di processo aggregato per rappresentare computazioni collettive dinamiche concorrenti, formalizzata come estensione al field calculus e implementata in ScaFi. Inoltre, si analizza e implementa un prototipo di middleware per sistemi aggregati, in grado di supportare più stili architetturali. Infine, si applicano e valutano tecniche di programmazione aggregata in scenari di edge computing, e si propone un pattern, Self-Organising Coordination Regions, per supportare, in modo decentralizzato, attività decisionali e di regolazione in ambienti dinamici

Marine Protected Areas in the Gulf of Maine: Policy for a Common Resource

In the wake of 25 years of unsuccessful single-fisheries management in the Gulf of Maine, there has been growing support for reform. Ecosystem management has been proposed as one alternative, but the information needed to manage whole ecosystems is greatly lacking. Implementing fully-protected marine protected areas (MPAs) is one way to preserve habitat while at the same time acquiring data for future ecosystem management. Under the current institutional arrangement in the Gulf, engineering agreement for MPAs is difficult due to the differing goals of varied user groups. The situation is reflective of a common property resource problem in that there are many individual users with no property rights reaping benefits from a shared resource, the Gulf of Maine. The result is overexploitation of the resource, in this case fish and associated biota and habitat. Common property resource dilemmas have been well studied by political scientists such as Elinor Ostrom. Ostrom has discovered there are common criteria for successful common property regimes. The questions this thesis poses are; 1) how does the common property resource regime of fisheries management in the Gulf of Maine compare to Ostrom\u27s criteria and; 2) what needs to be done to further meet these criteria for successful MPA implementation in the Gulf of Maine? This thesis is comprised of five chapters which address both policy issues and scientific questions pertaining to the implementation of fully-protected MPAs in the Gulf of Maine. Chapter 1 examines how fisheries in the Gulf of Maine reached its present state; Chapter 2 examines fishing industry attitudes towards historical fisheries management practices and the use of MPAs as a current fisheries management tool; Chapter 3 reports the overall benefits of MPAs obtained from national and international studies; and Chapter 4 is an analyzes of benthic invertebrate communities in the Gulf of Maine whose results are related to the MPA discussion. The concluding chapter incorporates the viewpoints of industry and MPA proponents into Ostrom\u27s 8 criteria for successful common property resource management of MPAs in the Gulf of Maine. Results show that although there is movement towards ecosystem-based fisheries management and MPAs on the part of both fishermen and MPA advocates, efforts are not coordinated and are inconsistent. Recommendations are to address the political hurdles of boundary clarification and establishment of an MPA forum before advancing MPA efforts

Perceptions of Moving from an Old to New Building: An Ethnographic Study of a School in Transition

During the second half of the 2002-2003 school year, the students and faculty at Valdosta Middle School moved from an old to new school building. The events leading to, during, and after the mid-year transfer presented a rare opportunity to observe the culture of a school in transition. If the themes that emerge provide insight into positive and negative aspects of the transitional process, a more appropriate protocol for the planning of, construction of, and transfer to new educational facilities could be established. The purpose of this study was to uncover the perceptions of students, teachers, and administrators who participated in the move from a fifty-year-old school to a new building. An ethnographic study was conducted at Valdosta Middle School (VMS) during the 2002-2003 and 2003-2004 school years using researcher fieldnotes and journal reflections, student, teacher, and administrator focus group interviews, and an individual administrator interview. Issues, themes, and foci emerged as the researchers understanding of participant perceptions increased. The end product of the research is a reconstructed story of the transition from an old to new building as told by those who experienced the mid-year move. There were many findings associated with the study. Firstly, there exists at VMS a power struggle between students and faculty in which adult desires for control and order are in opposition to student needs for freedom and spontaneity. Secondly, all participants identified increased general tension, student/faculty conflicts, and student-initiated resistance following the transition. Finally, the move to the new building brought significant changes in school culture, instruction, achievement, and curriculum.vi I. CHAPTER ONE THE BEGINNING Introduction.................................................................................1 Conceptual Context .........................................................................5 Research Questions........................................................................8 Methodology................................................................................9 Data Collection, Analysis, and Interpretation. ..........................................14 Validity.....................................................................................17 Assumptions and Biases..................................................................19 Preliminary Observations............................................................... .19 Organization of the Dissertation.........................................................20 II. CHAPTER TWO BEFORE THE MOVE Introduction of Journal Notes ..........................................................23 Journal Notes August 1, 2002 February 14, 2003................................23 III. CHAPTER THREE AFTER THE MOVE Journal Notes February 18, 2003 May 6, 2003....................................39 May 6, 2003 Student Focus Group.....................................................47 May 9, 2003 Administrator Interview.................................................76 May 12, 2003 Teacher Focus Group...................................................86 May 13, 2003 Administrator Focus Group............................................96 May 19, 2003 Student Focus Group..................................................107 May 26, 2003 Teacher Focus Group..................................................137 IV. CHAPTER FOUR ONE YEAR LATER February 5, 2004 Student Focus Group.............................................154 February 10, 2004 Teacher Focus Group...........................................175 V. CHAPTER FIVE DISCUSSION, CONCLUSIONS, AND RECOMMENDATIONS Introduction to Discussion and Conclusions.......................................189 Power, Control, and Order.............................................................193 Tension, Conflicts, and Resistance...................................................199 Instruction, Achievement, and the Hidden Curriculum...........................203 Culture, Space, and Time...............................................................211 Recommendations for Practice and Suggestions for Further Research .........217 VI. REFERENCES.........................................................................221 VII. APPENDICES..........................................................................225 Appendix A Institutional Research Board Approval..............................226 Appendix B Consent Forms...........................................................228 Appendix C Participant Demographics..............................................234Schmertzing, Richard W.Clevenger-Schmertzing, A. LorraineKrotseng, Marsha V.Ballard, ChetEd.D.Educatio