Object-based Information Flow Control in Peer-to-peer Publish/Subscribe Systems

Distributed systems are getting so scalable like IoT (Internet of Things) and P2P (Peer-to-Peer) systems that millions of devices are connected and support various types of applications. Here, distributed systems are required to be secure in addition to increasing the performance, reliability, and availability and reducing the energy consumption. In distributed systems, information in objects flows to other objects by transactions reading and writing data in the objects. Here, some information of an object may illegally flow to a subject which is not allowed to get the information of the object. Especially, a leakage of sensitive information is to be prevented from occurring. In order to keep information systems secure, illegal information flow among objects has to be prevented. Types of synchronization protocols are so far discussed based on read and write access rights in the RBAC (Role-Based Access Control) model to prevent illegal information flow.In this thesis, we newly propose a P2PPSO (P2P type of topic-based PS (Publish/Subscribe) with Object concept) model and discuss the models and protocols for information flow control. A P2PPSO model is composed of peer processes (peers) which communicate with one another by publishing and subscribing event messages. Each peer can both publish and receive event messages with no centralized coordinator compared with traditional centralized PS models. Each event message published by a source peer carries information to a target peer. The contents carried by an event message are considered to be composed of objects. An object is a unit of data resource. Objects are characterized by topics, and each event message is also characterized by topics named publication topics.In order to make a P2PPSO system secure, we first newly propose a TBAC (Topic-Based Access Control) model. Here, an access right is a pair ⟨t, op⟩ of a topic t and a publish or subscribe operation op. A peer is allowed to publish an event message with publication topics and subscribe interesting topics only if the publication and subscription access rights are granted to the peer, respectively. Suppose an event message e_j published by a peer p_j carries an object on some topics into a target peer p_i. Here, information in the peer p_j illegally flows to the peer p_i if the target peer p_i is not allowed to subscribe the topics. An illegal object is an object whose topics a target peer is not allowed to subscribe. Even if an event message is received by a target peer by checking topics, objects carried by the event message may be illegal at the target peer. Hence, first, we propose a TOBS (Topics-of-Objects-Based Synchronization) protocol to prevent target peers from being delivered illegal objects in the P2PPSO system. Here, even if an event message is received by a target peer, illegal objects in the event message are not delivered to the target peer.In the TOBS protocol, every event message is assumed to be causally delivered to every common target peer in the underlying network. Suppose an event message e_2 is delivered to a target peer p_i before another event message e_1 while the event message e_1 causally precedes the event message e_2 (e_1 →_c e_2). Here, the event message e_2 is premature at the peer p_i. Hence, secondly, we propose a TOBSCO (TOBS with Causally Ordering delivery) protocol where the function to causally deliver every pair of event messages is added to the TOBS protocol. Here, we assume the underlying network supports reliable communication among every pair of peers, i.e. no event message loss, no duplicate message, and the sending order delivery of messages. Every pair of event messages received by using topics are causally delivered to every common target peer by using the vector of sequence numbers.In the TOBS and TOBSCO protocols, objects delivered to target peers are held as replicas of the objects by the target peers. If a peer updates data of an object, the peer distributes event messages, i.e. update event messages, to update every replica of the object obtained by other peers. If a peer updates an object without changing topics, the object is referred to as altered. Here, an update event message for the altered object is meaningless since peers check only topics to exchange event messages. Hence, thirdly, we propose an ETOBSCO (Efficient TOBSCO) protocol where update event messages of objects are published only if topics of the objects are updated to reduce the network overhead.In the evaluation, first, we show how many numbers of event messages and objects are prevented from being delivered to target peers in the TOBS protocol. Next, we show every pair of event messages are causally delivered but it takes longer to deliver event messages in the TOBSCO protocol than the TOBS protocol. Finally, we show the fewer number of event messages are delivered while it takes longer to update replicas of altered objects in the ETOBSCO protocol than the TOBSCO protocol.博士(工学)法政大学 (Hosei University

Massachusetts Bar Discipline: History, Practice, and Procedure

While there have been several publications describing the bar discipline process for violations of the Massachusetts Rules of Professional Conduct, no work has described that process in great detail while also analyzing the related sanctions. The treatise seeks to fill this gap and make the practice more accessible to participants and observers by referencing, in a single volume, materials that had not previously been collected and analyzed. We begin with an overview of the history of bar discipline in the Commonwealth, followed by a discussion of the participants in, and structure of, the disciplinary process. Part II takes the reader through the steps of a typical bar discipline case from the initial complaint through the hearing. Part III discusses in detail some typical misconduct, including that related to competence, confidentiality, safekeeping of trust property, and advertising—and the sanctions typically imposed for it. This is followed by a discussion in Part IV of conduct that may aggravate or mitigate the presumptive sanction. Lastly, Part V discusses the post-hearing process as well as reciprocal discipline, resignations, duties after suspension or disbarment, reinstatement, and registration. While this volume is not a dissertation on legal ethics per se, it addresses the Rules of Professional Conduct as they arise in bar discipline

Fifth Conference on Artificial Intelligence for Space Applications

The Fifth Conference on Artificial Intelligence for Space Applications brings together diverse technical and scientific work in order to help those who employ AI methods in space applications to identify common goals and to address issues of general interest in the AI community. Topics include the following: automation for Space Station; intelligent control, testing, and fault diagnosis; robotics and vision; planning and scheduling; simulation, modeling, and tutoring; development tools and automatic programming; knowledge representation and acquisition; and knowledge base/data base integration

Suffering in Babylon: Ludlul bēl nēmeqi and the scholars, ancient and modern

Suffering in Babylon comprises a series of studies on Ludlul bēl nēmeqi. Part One examines the modern scholarship surrounding the poem’s textual reconstruction and translation. Ludlul exists today as a composite text, pieced together over the last 180 years from dozens of cuneiform tablets and fragments from various archaeological sites. With these disparate sources, Assyriologists have reconstructed three quarters of the poem’s original text, which is here translated anew with extensive epigraphic and philological notes. Part Two explores the historical contexts of the poem and its reception among first-millennium scribes. Whether the poem’s protagonist is the historical Šubši-mešrê-Šakkan or not, his experiences as described in the poem provide insight into the worldview and concerns of the ancient scholars among whom the poem’s author was counted, likely from the ranks of the exorcists. The protagonist’s experience with divine revelation sheds light on those scholars’ divinatory worldview. The anatomical and pathological vocabulary used to describe his suffering compares well to the vocabulary in exorcism texts. The ritual failures he experiences reflect the poem’s institutional agenda. And the structure and language of his first person account shows intertextual connections with incantation prayers, a genre distinctive to exorcism. The poem’s subsequent incorporation into various scribal curricula and tablet collections demonstrates the poem’s cultural stature among first-millennium scribes, who wrote a commentary on Ludlul and used the text in the creation of others. Part Three offers a comparative study that bridges the ancient and modern scholarly horizons. Drawing on both ancient and modern scholarship, it compares the protagonist’s experience of the alû demon with the clinical condition known today as sleep paralysis. The book’s underlying goal is to illustrate the potential of a multi-perspectival approach to Akkadian literature that acknowledges the contexts of both ancient and modern scholars involved in producing meaningful readings of this ancient literary gem

In the shadow of swaraj: constituent power and the Indian political

My thesis presents India as an active intellectual agent rather than a passive sociological referent in the global intellectual history of constituent power. It does so by exploring the hitherto undertheorized field of its constitutional imagination. It was commonly recognized during the anticolonial movement and the emerging postcolonial context that constituent power, or the power of constitution making, ultimately vested in the people. But this did not imply a purely diffusionist reception of either the revolutionary or the constitutionalist tradition of imagining the concept, both of which had been in wide circulation across the globe since the late eighteenth century. I highlight the ruptures, breaks and discontinuities of the Indian political sensibility in respect of the global, and make a case for situating swaraj as a distinct indigenous expression for collective self rule within a non-Europeanist and non-globalist relational approach to constituent power. The objective of this thesis however, is not to present a celebratory juridical account of an authentic nationalist self realization. Rather, it seeks to decentre formal constitutional principles and inter-institutional relations from discussions of constituent power, and anchors them instead in two fundamentally incompatible legal languages drawn from a philosophical history of the Indian political. It argues that the imaginary institution of society in modern India was marked by a constitutive dissensus between the social law of dharma and the political law of dhamma, and goes on to show how its development has been underpinned in the contemporary domain of constitutional thought in action by the mutual antagonism between these two symbolic lifeworlds. The thesis seeks to demonstrate that the persistent hegemony of a nationalist dharma threatens the very autonomy of the political, and it argues that only where this is effectively interrupted by the counter hegemony of a non-nationalist dhamma has the Indian political come close to realizing its full potential

Dying to the self: self-renunciation in Wittgensteinian ethics and philosophy of religion

EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Ballard v. Kerr Clerk\u27s Record Dckt. 42611

https://digitalcommons.law.uidaho.edu/idaho_supreme_court_record_briefs/6640/thumbnail.jp

Knowledge and Management Models for Sustainable Growth

In the last years sustainability has become a topic of global concern and a key issue in the strategic agenda of both business organizations and public authorities and organisations. Significant changes in business landscape, the emergence of new technology, including social media, the pressure of new social concerns, have called into question established conceptualizations of competitiveness, wealth creation and growth. New and unaddressed set of issues regarding how private and public organisations manage and invest their resources to create sustainable value have brought to light. In particular the increasing focus on environmental and social themes has suggested new dimensions to be taken into account in the value creation dynamics, both at organisations and communities level. For companies the need of integrating corporate social and environmental responsibility issues into strategy and daily business operations, pose profound challenges, which, in turn, involve numerous processes and complex decisions influenced by many stakeholders. Facing these challenges calls for the creation, use and exploitation of new knowledge as well as the development of proper management models, approaches and tools aimed to contribute to the development and realization of environmentally and socially sustainable business strategies and practices

IFPOC Symposium:Discovering antecedents and consequences of complex change recipients' reactions to organizational change.

IFPOC symposium: Discovering antecedents and consequences of complex change recipients' reactions to organizational change Chairs: Maria Vakola (Athens University of Economics and Business) & Karen Van Dam (Open University) Discussant: Mel Fugate (American University, Washington, D.C) State of the art Organisations are required to continuously change and develop but there is a high failure rate associated with change implementation success. In the past two decades, change researchers have started to investigate change recipients' reactions to change recognizing the crucial role of these reactions for successful change. This symposium aims at identifying and discussing the complex processes that underlie the relationships among antecedents, reactions and outcomes associated with organizational change. New perspective / contributions This symposium consists of five studies that extend our knowledge in the field by (i) providing an analysis of change recipients' reactions going beyond the dichotomous approaches (acceptance or resistance) (ii) revealing understudied antecedents-reactions and reactions-consequences patterns and relationships (iii) shedding light on the role of contextual factors i.e team climate and individual factors i.e emotion regulation on the adaptation to change. This symposium is based on a combination of both quantitative (i.e diary, survey) and qualitative (i.e interviews) research methodology. Research / practical implications This symposium aims to increase our understanding of the complex processes associated with change recipients' reactions to change. Discovering how these reactions are created and what are their results may reveal important contingencies that can explain how positive organizational outcomes during times of change can be stimulated which is beneficial for both researchers and practitioners

Qigong at Work: Where East Meets West

State of the Art Qigong is part of Traditional Chinese Medicine (TMC) and aims to balance body and mind. The roots of Qigong lie in China, where Confucian and Daoist scholars (500-400 B.C.) noted that one must learn to balance and relax one’s thoughts and emotions to avoid illness (Yang, 1997). In the Western world, Qigong is best known for its slow and coordinated movements. According to TCM, these movements will help regulate one’s ‘qi’, or life energy, through the body to improve the health and harmony of mind and body. During the practice of Qigong, one’s breathing, attention and movement are aligned. As such, Qigong is sometimes considered Mindfulness in movement (although there are many important differences). New perspectives / contributionsQigong has many positive outcomes on health and wellness. In both patient groups and healthy individuals, Qigong has been shown to improve psychological well-being, quality of life, immune function, balance and related risk-factors, and bone density (Jahnke et al., 2010). As such, Qigong offers a validated way to reduce the physical and mental activation that results from a person's work. While recent research has demonstrated how important it is to take short breaks at work, there is still little attention for Qigong exercises as a means to recover at work.Practical Implications In this presentation, we will explain and practice several Qigong exercises. These movements can be used at work (and at home) to recover from (hormonal) activation, ‘empty’ one’s head, and restore the body-mind balance. <br/