Error Correcting Coding and Security for Data Networks
This article uses case studies of visual art installations to elaborate an alternative view of the way art is experienced by museum and gallery visitors. In particular, it is argued that the orthodox and influential decoding perspective in the sociology of art overlooks the situated and experiential nature of art, especially when art takes the form of installations. In order to study experiences of art installations, this article draws on recent developments in cultural sociology and the sociology of music to reintroduce the idea of mediation into thinking about and with art. A focus on processes of mediation allows me to address the communications and interactions which emerged at the particular art installation under consideration here, a piece called PharmaConcert by Evgeniy Chertoplyasov that was displayed at the Winzavod Art Centre in Moscow in 2011. Detailed analysis of the forms of interactions at this exhibition shows that as audience members perceive artworks, they transform abstract expectations of artworks into a series of specific and situated actions. Simultaneously, other mediation processes reassemble the audiences through shared experience of contested meanings of an artwork. The paper challenges the orthodox sociological notion of what an ‘audience’ is and instead sees audiences as an emerging form of communication and interaction specific to a particular artwork / installation.
Separating codes have been used in many areas as diverse as automata synthesis, technical diagnosis and traitor tracing schemes. In this paper, we study a weak version of separating codes called almost separating codes. More precisely, we derive lower bounds on the rate of almost separating codes. From the main result it is seen that the lower bounds on the rate for almost separating codes are greater than the currently known lower bounds for ordinary separating codes. Moreover, we also show how almost separating codes can be used to construct a family of fingerprinting codes.
Smart Innovation, Systems and Technologies
The author tells about the problems arising from the use of the Internet by counsel. Specify on the legal regulation and enforcement deficiencies, makes recommendations to correct them. It contains information about the creation of an ad hoc working group to prepare a draft specific rules. Examples of regulation of Internet use by lawyers from other countries.
A novel method for computing the discrete Fourier transform (DFT) over a finite field based on the Goertzel-Blahut algorithm is described. The novel method is currently the best one for computing the DFT over even extensions of the characteristic two finite field, in terms of multiplicative complexity.
This article proposes a mutual adaptation of the procedure for extracting digital watermark from video sequences and fingerprinting code decoding. Proposed solution includes two interrelated techniques. The first one is a usage of “soft” decision making instead of “hard” decision during watermark extraction. This means that the additional information on extracted bit reliability will be obtained from the hidden channel. The second one is an including of the reliability to decoding procedure. The use of such a solution allows more effective work of fingerprinting codes and achieves zero accusation error rates.
Cloud data storages are functioning in the presence of the risks of confidentiality, integrity, and availability related with the loss of information, denial of access for a long time, information leakage, conspiracy and technical failures. In this paper, we provide analysis of reliable, scalable, and confidential distributed data storage based on Multilevel Residue Number System (RNS) and Mignotte secret sharing scheme. We use real cloud providers and estimate characteristics such as the data redundancy, speed of data encoding, and decoding to cope with different user preferences. The analysis shows that the proposed storage scheme increases safety and reliability of traditional approaches and reduces data storage overheads by appropriate selection of RNS parameters.
A model for organizing cargo transportation between two node stations connected by a railway line which contains a certain number of intermediate stations is considered. The movement of cargo is in one direction. Such a situation may occur, for example, if one of the node stations is located in a region which produce raw material for manufacturing industry located in another region, and there is another node station. The organization of freight traﬃc is performed by means of a number of technologies. These technologies determine the rules for taking on cargo at the initial node station, the rules of interaction between neighboring stations, as well as the rule of distribution of cargo to the ﬁnal node stations. The process of cargo transportation is followed by the set rule of control. For such a model, one must determine possible modes of cargo transportation and describe their properties. This model is described by a ﬁnite-dimensional system of diﬀerential equations with nonlocal linear restrictions. The class of the solution satisfying nonlocal linear restrictions is extremely narrow. It results in the need for the “correct” extension of solutions of a system of diﬀerential equations to a class of quasi-solutions having the distinctive feature of gaps in a countable number of points. It was possible numerically using the Runge–Kutta method of the fourth order to build these quasi-solutions and determine their rate of growth. Let us note that in the technical plan the main complexity consisted in obtaining quasi-solutions satisfying the nonlocal linear restrictions. Furthermore, we investigated the dependence of quasi-solutions and, in particular, sizes of gaps (jumps) of solutions on a number of parameters of the model characterizing a rule of control, technologies for transportation of cargo and intensity of giving of cargo on a node station.
Event logs collected by modern information and technical systems usually contain enough data for automated process models discovery. A variety of algorithms was developed for process models discovery, conformance checking, log to model alignment, comparison of process models, etc., nevertheless a quick analysis of ad-hoc selected parts of a journal still have not get a full-fledged implementation. This paper describes an ROLAP-based method of multidimensional event logs storage for process mining. The result of the analysis of the journal is visualized as directed graph representing the union of all possible event sequences, ranked by their occurrence probability. Our implementation allows the analyst to discover process models for sublogs defined by ad-hoc selection of criteria and value of occurrence probability
Existing approaches suggest that IT strategy should be a reflection of business strategy. However, actually organisations do not often follow business strategy even if it is formally declared. In these conditions, IT strategy can be viewed not as a plan, but as an organisational shared view on the role of information systems. This approach generally reflects only a top-down perspective of IT strategy. So, it can be supplemented by a strategic behaviour pattern (i.e., more or less standard response to a changes that is formed as result of previous experience) to implement bottom-up approach. Two components that can help to establish effective reaction regarding new initiatives in IT are proposed here: model of IT-related decision making, and efficiency measurement metric to estimate maturity of business processes and appropriate IT. Usage of proposed tools is demonstrated in practical cases.
This volume presents new results in the study and optimization of information transmission models in telecommunication networks using different approaches, mainly based on theiries of queueing systems and queueing networks .
The paper provides a number of proposed draft operational guidelines for technology measurement and includes a number of tentative technology definitions to be used for statistical purposes, principles for identification and classification of potentially growing technology areas, suggestions on the survey strategies and indicators. These are the key components of an internationally harmonized framework for collecting and interpreting technology data that would need to be further developed through a broader consultation process. A summary of definitions of technology already available in OECD manuals and the stocktaking results are provided in the Annex section.