S×C4IoT: A Security-by-contract Framework for Dynamic Evolving IoT Devices

The Internet of Things (IoT) revolutionised the way devices, and human beings, cooperate and interact. The interconnectivity and mobility brought by IoT devices led to extremely variable networks, as well as unpredictable information flows. In turn, security proved to be a serious issue for the IoT, far more serious than it has been in the past for other technologies. We claim that IoT devices need detailed descriptions of their behaviour to achieve secure default configurations, sufficient security configurability, and self-configurability. In this article, we propose S×C4IoT, a framework that addresses these issues by combining two paradigms: Security by Contract (S×C) and Fog computing. First, we summarise the necessary background such as the basic S×C definitions. Then, we describe how devices interact within S×C4IoT and how our framework manages the dynamic evolution that naturally result from IoT devices life-cycles. Furthermore, we show that S×C4IoT can allow legacy S×C-noncompliant devices to participate with an S×C network, we illustrate two different integration approaches, and we show how they fit into S×C4IoT. Last, we implement the framework as a proof-of-concept. We show the feasibility of S×C4IoT and we run different experiments to evaluate its impact in terms of communication and storage space overhead.

Trading Activities and the Volatility of Return on Malaysian Crude Palm Oil Futures

Trading activities represent the flow of market information to the investors. This paper examines the effect of trading activities, i.e., trading volume and open interest, on the volatility of return for Malaysian Crude Palm Oil Futures. The GARCH model is applied by adding the expected and unexpected elements of trading activities (trading volume and open interest) as the independent variables. The results show that there is a negative contemporaneous relationship between the expected volume and volatility, but that a positive relationship exists between unexpected volume and volatility. On the contrary, the expected and unexpected open interest mitigate the volatility. Therefore, both trading volume and open interest should be considered together when information flows into the market.

Relative controllability of multiagent systems with pairwise different delays in states

In this manuscript, relative controllability of leader–follower multiagent systems with pairwise different delays in states and fixed interaction topology is considered. The interaction topology of the group of agents is modeled by a directed graph. The agents with unidirectional information flows are selected as leaders, and the others are followers. Dynamics of each follower obeys a generic time-invariant delay differential equation, and the delays of agents, which satisfy a specified condition, are different one another because of the degeneration or burn-in of sensors. With a neighbor-based protocol steering, the dynamics of followers become a compact form with multiple delays. Solution of the multidelayed system without pairwise matrices permutation is obtained by improving the method in the references, and relative controllability is established via Gramian criterion. Further rank criterion of a single delay system is dealt with. Simulation illustrates the theoretical deduction.

Introduction in emotional chat bots & base of Bioinformatics

The article proposed interdisciplinary research should contribute to understanding the attitude of the population to the ongoing processes of digital transformation of the means of interaction with authorities, the level of their confidence in the widespread introduction of artificial intelligence technologies in the provision of public services. Understanding the psychology of the user, the specifics of information flows in public administration, the capabilities of modern IT systems - all this together will make it possible to significantly improve the corresponding communication processes.The scientific task posed within the framework of the topic is to develop a conceptual model for optimizing one of the main elements of modern e-government systems - "intelligent chat bots" designed to make the interaction of citizens with government bodies more efficient. The results of the article is contribute to the implementation of the goals, objectives and strategic guidelines of the programs of scientific and technological development of both the region and Russia as a whole.

Decision Making for Energy Management in Smart Grid

The chapter discusses the problem of energy management in Smart MicroGrid. The strategies of Smart MicroGrid energy management and objectives of Smart MicroGrid operation have been analyzed. The chapter emphasizes the potential of information technologies implementation to achieve energy management goals and provide a description of energy management information system which is used for MicroGrid planning and operation. The information flows which are used for making decision on Smart MicroGrid energy management have been analyzed.

The Dynamics of Polarisation in Australian Social Media

This chapter provides a case study of a public debate attracting highly polarised and antagonistic participants within the Australian context and examines the dynamics of polarisation, information flows, discourses, and materialities shaping these dynamics. Twitter conversations about immigration policies of the Australian government and detention of asylum seekers in offshore camps attract a great deal of polarised debate. The authors show how the affordances of the platform constitute, and are constituted by, the discourses of the users, and how users strategically discursify and give meaning to these affordances to further make their own political positions visible, amplify antagonisms, and at times, join each other in the formation of larger agonistic communities.

Structural and parametric synthesis of a document management system

The structures representing the document flow processes in an organization are considered by synthesizing them from the simplest structures. Presented in the form of graphs the processes of movement of documents become formalized and unambiguously defined. Using classification of typical structures of information flows and available mathematical model of management system, it is possible to formalize processes of movement of documents and their interaction in the form of management model, and also to make technical specification for development of information system and finished formalized statement of the problem of structure-parametric synthesis

MODEL OF NATIONAL EDUCATION OF THE STUDENTS IN THE REPUBLIC OF KAZAKHSTAN

The objective processes happening in the modern world and expansion of the information flows, affecting almost all areas of human activities, have a strong influence on the determination of the content of training and education of the students in Kazakhstan, in particular, national education.

Las Salas de Prensa Virtual como herramientas de Relaciones Públicas para la comunicación con los medios en Cuba. Un estado de la cuestión / Virtual Press Room as Public Relations tool for communication with media in Cuba. A state of affairs

Public Relations have found in digital platforms an ideal device to build contact and interactivity with corporation's audiences. Within the field, new possibilities emerge to address the issue of generating interactivity with communication media, which has always been a core activity of Public Relations offices. Over the last decade, the Cuban institutional and communicative scenario has witnessed an upsurge of Press Cabinets and Communication Offices, which are expanding their traditional functions mainly due to digitization and hypermedia convergence. Thus, new resources like Virtual Press Rooms aim to assist corporations in their quest to build interactive channels for contact with media and citizenship, to manage information flows with journalists and to promote the dialogue with the stakeholders. These tools are considered a natural evolvement of the traditional routines of communication offices to enhance interactive channels and nurtured relationships with press officers. Many researchers have pointed out the relevant role of Virtual Press Rooms as substitutes for common PR strategies like press kit and mailing. This research analyzes the integration of Virtual Press Rooms within the main organism of Cuban state’s central administration. This research has been carried out using a quantitative content analysis, based on a categorical system validated by the Bitartez Group of the Basque University System for developing similar researches in the field. The study assesses the common features of Virtual Press Rooms in Cuban corporations and its adaptation to Cuban journalistic and communicative landscape. The results of the study show that Cuban Online Press Rooms perform as a container for files and corporate content, while exalting a documentary function. In many cases, the informative role is prioritized, while the contents designed for media are relegated to less visible spaces within the website. Even though they improve the access to relevant and quality information that facilitates journalistic practices, they still lack of a better approach to nurture the interactions between journalists and corporate sources. The whole analysis shows that Cuban corporations do not take full advantage of digital capabilities to nurture the information flows and the interactions between the organization and their stakeholders. Whether it is suitable to assess that Cuban communication`s practices are, indeed, in a process of transition to the digital landscape, it is still relevant to find out if the limitations exposed in the previous paragraphs obey to some strategical and political-ideological conditioning factors.

What journalism tells us about memory, mind and media

This article looks to journalism in order to understand the relationship between memory, mind and media more fully. Using the urgency that characterises the current news environment as a reflection of broader information flows, the article considers journalism's embrace of complex time to address the demands of speed. It suggests that the temporal practices adopted by both individual journalists and the journalistic community offer a model for institutions wrestling with the ontological uncertainty generated by current times, providing mechanisms to navigate and even offset the unending demands of simultaneity, immediacy and instantaneity.