CrowdMed-II: a blockchain-based framework for efficient consent management in health data sharing

The healthcare industry faces serious problems with health data. Firstly, health data is fragmented and its quality needs to be improved. Data fragmentation means that it is difficult to integrate the patient data stored by multiple health service providers. The quality of these heterogeneous data also needs to be improved for better utilization. Secondly, data sharing among patients, healthcare service providers and medical researchers is inadequate. Thirdly, while sharing health data, patients’ right to privacy must be protected, and patients should have authority over who can access their data. In traditional health data sharing system, because of centralized management, data can easily be stolen, manipulated. These systems also ignore patient’s authority and privacy. Researchers have proposed some blockchain-based health data sharing solutions where blockchain is used for consensus management. Blockchain enables multiple parties who do not fully trust each other to exchange their data. However, the practice of smart contracts supporting these solutions has not been studied in detail. We propose CrowdMed-II, a health data management framework based on blockchain, which could address the above-mentioned problems of health data. We study the design of major smart contracts in our framework and propose two smart contract structures. We also introduce a novel search contract for searching patients in the framework. We evaluate their efficiency based on the execution costs on Ethereum. Our design improves on those previously proposed, lowering the computational costs of the framework. This allows the framework to operate at scale and is more feasible for widespread adoption.

Touring activities of Ukrderzhtsirk as a domain’s “health” indicator

The purpose of the article is to identify and analyze the effectiveness of the Ukrainian state circus arts system’s touring activities from the early 1990s. Methodology. The study analyses archival information on the Ukrderzhtsirk’s work. The historical-factographic method helps to record the results of the circus touring activities development. Comparative analysis allows detecting the specifics of the phenomenon, revealing its organizational and creative trends, and evaluating them. Scientific novelty. For the first time, the main trends of the Ukrainian state circus touring activities held since the early 1990s were revealed and characterized. Conclusions. The touring activities’ effectiveness is characterized by declining trends – something that corresponds to the general dynamics of the “post-Soiuzgostsirk” organizational and creative process. Probably one of the decline factors was that of the head organization’s inability to provide the circus system with a properly centralized management. Ukrderzhtsirk has some achievements, in particular, its own brand-name founding, business contacts establishing, organizing of abroad tours for Ukrainian programs. However, the state circus product’s export faces its decline, while the sector of import is not prospective as a foreign product is too expensive. Obviously the current organizational and creative approaches to foreign economic activities performing are in need to be revised. Keywords: Ukrainian circus arts, Soviet circus, touring, Ukrderzhtsirk, Soiuzgostsirk, circus arts enterprise, circus arts product.

Armonización de calendarios en el mundo islámico primitivo como se refleja en Elementos de astronomía de al-Farghānī

This paper seeks to shed more light on calendrical knowledge in the first centuries of the Islamic era in which different administrative traditions fell under the control of a central government. Astronomy as a court-sponsored discipline in the Abbasid dynasty (132-656 AH/750-1258 CE), undertook the pivotal task of identifying and mastering various calendrical disciplines under the reign of the caliphs to make a centralized management feasible. In the first two centuries, the domination of the Arabic lunar calendar, whose significance lies in governing the Islamic yearly festivals and occasions, led to drastic disagreements with the annual planting cycles that were followed by the farmers. Accordingly, the official taxation system faced serious problems. The solution to which was the development of a well-established solar calendar. The large concern of the ninth-century Muslim astronomers for calendrical computations, acknowledges their integral participation in this executive challenge. The present study follows these practices through the lens of a ninth-century Arabic astronomical text, written by Aḥmad b. Muḥammad b. Kathīr al-Farghānī (Alfraganus in the west), known mainly as the Elements of Astronomy. The careful exploration of this text helps us achieve a broader image of time-keeping accounts in the early Islamic era and the need for calendrical conversions. Moreover, the author’s detailed report of the five existing calendars of the time (Arabic, Syriac, Byzantine, Persian and Egyptian) and their systems of nomenclature, opens an early window to the linguistic investigation of time-reckoning in the Islamic world. Este artículo pretende arrojar luz sobre los conocimientos calendáricos en los primeros siglos de la era islámica, en los que diferentes tradiciones administrativas quedaban bajo el control de un gobierno central. La astronomía, como disciplina patrocinada por la corte en la dinastía abasí (132-656 /750-1258), emprendió la tarea fundamental de identificar y dominar varias disciplinas calendáricas bajo el reinado de los califas para hacer viable una gestión centralizada. En los dos primeros siglos, el dominio del calendario lunar árabe, cuya importancia radica en la regulación de las fiestas y ocasiones anuales islámicas, provocó drásticos desacuerdos con los ciclos anuales de siembra que seguían los agricultores. En consecuencia, el sistema fiscal oficial se enfrentó a graves problemas, cuya solución fue el desarrollo de un calendario solar bien establecido. La gran preocupación de los astrónomos musulmanes del siglo IX por los cómputos calendáricos reconoce su participación integral en este desafío ejecutivo. El presente estudio sigue estas prácticas a través de la atenta lectura de un texto astronómico árabe del siglo IX escrito por Ahmad b. Muhammad b. Kathīr al-Farghānī (Alfraganus en occidente), conocido principalmente como los Elementos de Astronomía. La cuidadosa exploración de este texto nos ayuda a conseguir una imagen más amplia de los relatos sobre el tiempo en la primera época islámica y la necesidad de las conversiones calendáricas. Además, el informe detallado del autor sobre los cinco calendarios existentes en la época (árabe, siríaco, bizantino, persa y egipcio) y sus sistemas de nomenclatura, abre una posibilidad para la investigación lingüística de la relojería en el mundo islámico.

Tools for solving management tasks in economic systems of the «organization» type

The digital economy requires the digital transformation of firms. There is no single solution to the digital transformation process. For each company, the process is carried out according to an individual plan. You can use world experience, but in certain segments of the digital economy, the Russian Federation has gone further than other countries. The authors proposed to consider the problems of digital transformation of energy companies separately. Then combine it into a single approach. Digital transformation is much broader than the digitization of the workflow. Often, digitizing documents does not provide the synergistic effect of digital transformation. Digital transformation requires a change in the entire management system. All strategic documents should be reengineered. Digital transformation requires new models and methods that can use the information technologies and artificial intelligence systems that appear in the future. The introduction of blockchain technologies as part of digital transformation will allow changing the centralized management system. This will lead to significant cost savings. Digital transformation has highlighted a problem related to the lack of basic competencies of the digital economy among the leaders of energy firms. It is necessary to solve the identified problem in the shortest possible lines. The article reveals the problems associated with the use of information technologies by energy companies supplied from other countries with the possibility of remote change.

“RESLOBODIZATION” OF CITIES AS AN EFFECTIVE RESPONSE TO THE EPIDEMIOLOGICAL CHALLENGE OF THE CONTEMPORARY. PART II: PRECONDITIONS, ALGORITHMS, RESULTS

The article (part II) contains the results of studying the features of adaptation of the living environment of the population of the largest city to the vital challenges of the pandemic of the new coronavirus infection COVID-19. The verifi cation of the working hypothesis and the detailing of the main provisions formulated in the fi rst part of the article (see “Urban planning and architecture”. 2021, no. 1) were carried out on the example of an ordinary St. Petersburg locus, actively developed by the townspeople who observed the regimes of self-isolation, partial lifting of strict restrictions and minimal restrictions (2020), which is located within the boundaries of the former sett lement of the Life Guards Semyonovsky regiment, which gave the name to the historical district of the city “Sementsy” and the municipal district “Semyonovsky” (Admiralteisky district of St. Petersburg). In the course of the study, a relationship was established between the immanent properties and parameters of the transformed urban sett lement (territorial- urban-planning, situational-genesis, compositional planning, architectural-spatial, social-functional) and its “anti-epidemiological” potential, realized by the local population and the authorities in the conditions of “pandemic reality” by methods of social self-regulation and centralized management.

A Node Confident based IDS to Avoid Packet Drop Attacks for Wireless Sensor Network

Because of the great characteristics of Wireless Sensor Networks like easier to use and less cost of deployment, they have attracted the researchers to conduct the investigations and received the importance in various civilian and military applications. A number of security attacks have been involved due to the lack of centralized management in these networks. The packet drop attack is one of the attacks and it has a compromised node which drops the malicious packets. In WSNs, different techniques have been implemented to identify the packet drop attack but none of them provides the feasibility to stop or isolate their occurrence in the future. In recent times, the reputation systems provide the way to identify the trustworthy nodes for data forwarding. But the lack of data classification in the reputation systems affects the false positive rate. In this paper, a novel CONFIDENT SCORE based BAYESIAN FILTER NODE MONITORING AGENT (CFS-BFNMA) mechanism is introduced to identify & avoid the packet drop nodes and also to monitor the node behaviours to improve the false positive rate. The final CFS of a node is estimated based on the node past and threshold CFS values. The node monitoring agents (BFNMA) constantly monitors the forwarding behaviour of the nodes and assigns CFS based on the successful forwards. The NMA saves the copy of the data packets in their buffers before forwarding to the neighbour nodes to compare them. Also, this BFNMA analyses the traffic pattern of every round of transmission to improve the false positive rate. By comparing with other conventional security algorithms, the proposed mechanism has been improved the network security & false positive rate drastically based on the simulation results.

Construction of Big Database in the Field of Public Security: A Case Study in Shenzhen

In terms of the actual needs of the emergency management department, at the beginning of the establishment of Shenzhen Emergency Management Bureau, all kinds of information resources have not been connected, and the business of the Department is still supported by the information assets of the original unit of the transferred department. However, there are significant differences in the construction years, construction standards and system architecture of the existing information systems, which lead to the “one number, multiple sources” and multiple management of all kinds of business data, and the systems are basically in the chimney construction pattern of mutual separation. At the same time, the exchange and sharing of internal and external data of the Emergency Management Bureau lacks a unified data standard, and a unified data platform has not been built for centralized management. Therefore, it is difficult for the newly established emergency management bureau to effectively support the business process reengineering, collaborative command, big data intelligent decision-making and other needs. In addition, considering the construction of smart city at the municipal and district levels, as well as the complex information situation such as the information collaboration within the security committee office and emergency committee system, it is urgent to prepare the top-level design of emergency management information, and plan the future development with a higher position, a wider vision and a new idea.

Study on SDN with Security Issues Using Mininet

The internet is faced with many problems daily, one of them is decrement in network bandwidth because of Distributed Denial of Service (DDoS) attack on host server, which deplete host resources. Researchers has been invented many protection mechanisms such as detection, trace back, prevention, reaction, and characterization are in case of DDoS attacks, which will control the number of malicious packets received by the victim. But it does not provide efficient detection technique with high rate in real time network infrastructure. Thus, modern technologies are prepared on Mininet network simulators, which give more impact to simulate the real network. The architecture of Software Defined Networks (SDN) and OpenFlow architecture is used to demonstrate a programmable network model and centralized management of real network. In this research work, we provide design of software defined network (SDN) using mininet simulator and security issues related to the Software Defined Network.

Predictors of Seronegative Conversion After Centralized Management of Syphilis Patients in Shenzhen, China

Objective: The aim of this study was to explore the seronegative conversion status of syphilis patients after centralized management and to analyze potential determinants.Materials and Methods: A retrospective population-based cohort study was conducted, and data for individuals who had been diagnosed with syphilis between 2011 and 2019 were retrieved from the Shenzhen Nanshan Center for Chronic Disease Control. Seroconversion statuses were summarized as percentages. Univariable and multiple Cox proportional hazard regression models were used to analyze the factors associated with seronegative conversion among syphilis patients.Results: During the study period, 1,545 patients with syphilis participated in the syphilis convergence case management program on a voluntary basis, of whom 290 were excluded due to missing follow-up data. A total of 27.6% (346/1255) of patients with syphilis showed seronegative conversion. Multivariable analysis revealed that the following significantly determined syphilis seroconversion from positive to negative: younger age (15–19 years vs. ≥30 years: HR = 2.18), male gender (HR = 1.45), lower baseline toluidine red unheated serum test (TRUST) titer of ≤ 1:8 (HR = 2.23), and different disease stages, including latent syphilis (HR = 1.98), primary syphilis (HR = 7.67), and secondary syphilis (HR = 4.83).Conclusions: Few patients with syphilis tested negative after treatment at the end of the study. Seronegative conversion in the patients was associated with age, sex, baseline TRUST titer, and syphilis stage.

FEATURES OF THE FUNCTIONING OF CENTRALIZED MANAGEMENT IN THE INTERNAL AFFAIRS OF RUSSIA

Статья посвящена централизованному управлению в органах внутренних дел Российской Федерации. Рассматривается исторический аспект формирования централизованного управления в системе власти, современное содержание централизованного управления в органах внутренних дел Российской Федерации. The article is devoted to centralized management in the internal affairs bodies of the Russian Federation. The materials consider the historical aspect of the formation of centralized management in the power system, the modern content of centralized management in the internal affairs bodies of the Russian Federation.