system service display station

2021 ◽  
Vol 11 (1) ◽  
pp. 365-379
Author(s):  
Wisam Elmasry ◽  
Akhan Akbulut ◽  
Abdul Halim Zaim

Abstract Although cloud computing is considered the most widespread technology nowadays, it still suffers from many challenges, especially related to its security. Due to the open and distributed nature of the cloud environment, this makes the cloud itself vulnerable to various attacks. In this paper, the design of a novel integrated Cloud-based Intrusion Detection System (CIDS) is proposed to immunise the cloud against any possible attacks. The proposed CIDS consists of five main modules to do the following actions: monitoring the network, capturing the traffic flows, extracting features, analyzing the flows, detecting intrusions, taking a reaction, and logging all activities. Furthermore an enhanced bagging ensemble system of three deep learning models is utilized to predict intrusions effectively. Moreover, a third-party Cloud-based Intrusion Detection System Service (CIDSS) is also exploited to control the proposed CIDS and provide the reporting service. Finally, it has been shown that the proposed approach overcomes all problems associated with attacks on the cloud raised in the literature.


2021 ◽  
Vol 73 (1) ◽  
Author(s):  
Xin Jin ◽  
Xin Liu ◽  
Jinyun Guo ◽  
Yi Shen

AbstractPolar motion is the movement of the Earth's rotational axis relative to its crust, reflecting the influence of the material exchange and mass redistribution of each layer of the Earth on the Earth's rotation axis. To better analyze the temporally varying characteristics of polar motion, multi-channel singular spectrum analysis (MSSA) was used to analyze the EOP 14 C04 series released by the International Earth Rotation and Reference System Service (IERS) from 1962 to 2020, and the amplitude of the Chandler wobbles were found to fluctuate between 20 and 200 mas and decrease significantly over the last 20 years. The amplitude of annual oscillation fluctuated between 60 and 120 mas, and the long-term trend was 3.72 mas/year, moving towards N56.79 °W. To improve prediction of polar motion, the MSSA method combining linear model and autoregressive moving average model was used to predict polar motion with ahead 1 year, repeatedly. Comparing to predictions of IERS Bulletin A, the results show that the proposed method can effectively predict polar motion, and the improvement rates of polar motion prediction for 365 days into the future were approximately 50% on average.


2021 ◽  
pp. 44583362-44583362
Author(s):  
В.К. САРЬЯН ◽  
А.И. ПАРАМОНОВ ◽  
А.С. ВИКУЛОВ ◽  
Р.М. ЯКУБОВСКИЙ

Анализируются возможности использования локальных беспроводных сетей широкополосного доступа в системах управления спасением людей в чрезвычайных ситуациях. Рассматриваются методы локализации пользователей, оказавшихся в опасных условиях, а также способы повышения доступности информации о них для передачи в центр управления спасением и уровня информированности самих пользователей о планах центра по их спасению. Предлагается оригинальное решение, позволяющее выполнять локализацию поэлементно, т. е. в помещениях и на отдельных участках области обслуживания системы. Показано, что решение может быть успешно использовано для организации сетевой инфраструктуры объектовой части глобальной экспертной системы, обеспечивающей доступ массового абонента в любое время и в любом месте к услуге индивидуализированного управления спасением абонентов при возникновении чрезвычайной ситуации природного или техногенного происхождения. Представлены методы повышения устойчивости сети, в частности метод построения одноранговой ad-hoc-сети с использованием коммуникаций устройство-устройство. The article analyzes the possibilities of using local wireless broadband access networks in emergency management systems for rescue people. Methods of localization of users in dangerous conditions, ways of increasing the availability of information about them for the rescue control center, as well as the level of awareness of the users themselves about the plans of the center for their rescue are considered. It is proposed the original solution, that allows localization to be performed element by element, i.e. in rooms and certain areas of the system service area. It is shown that the solution can be successfully used to organize the network infrastructure of the facility part of the global expert system, which provides mass subscriber access at any time and in any place to the service of individualized management of the rescue of subscribers in case of natural or man-made disasters. Methods for enhancing network stability are presented, in particular, a method for constructing a peer-to-peer ad-hoc network using device-to-device communications.


2012 ◽  
Vol 24 (2) ◽  
pp. 50-73 ◽  
Author(s):  
Narasimhaiah Gorla

Information system service quality has been a very important theme in both IS practice and research. User service expectations affect perceived service quality and user satisfaction. The objectives of this research are to i) to explore the relationship between perceived IS service quality and user satisfaction across the three regions of zone of tolerance (ZOT) and ii) to validate the associations between service expectations (adequate service and desired service) and service performance. The analysis of the data obtained from 193 IS users revealed a positive and significant association between perceived service quality and user satisfaction across the service zones and service dimensions with stronger associations in the acceptable service zone and weaker associations in the inadequate and superior service zones. Thus, the results demonstrate that the relationship between IS service quality and user satisfaction is affected by ZOT. It is found that the desired service expectation measure is more strongly related to service performance compared to the adequate service expectation measure. It is also observed that irrespective of the ZOT, the service dimension that contributes most to service performance is assurance. Tangibles have the widest ZOT and assurance has the narrowest ZOT compared to most other service dimensions. The author discusses the implications of the present study for both research and practice.


Author(s):  
Chris Bojke ◽  
Adriana Castelli ◽  
Katja Grašič ◽  
Daniel Howdon ◽  
Andrew Street

This chapter introduces the political focus on the productivity of the NHS. Productivity is a conceptually simple construct, relating the amount of output produced to the amount of inputs used in the production process. Productivity growth can also be calculated by comparing the change in outputs produced to the change in inputs utilised from one period to the next. Political interest is focused primarily on productivity growth. However, assessing productivity or efficiency is somewhat problematic in the context of a free-at-the-point-of-use health system service such as the NHS. The authors discuss some of the issues they face in attempting such an evaluation. With these issues in mind, the authors describe the growth in outputs, inputs and productivity between 2004/05 and 2013/14. The chapter concludes by discussing whether or not the key political measures highlighted in the first section appear to have had an influence on NHS productivity growth.


2011 ◽  
Vol 243-249 ◽  
pp. 6672-6676
Author(s):  
Chun Rong Zhao ◽  
Ying Zhang

The low-carbon urban construction is an important carrier of the energy saving and emmission reduction,which will lead to an new trend of future city construction.while regarded as the important component of low-carbon construction, low-carbon ecology community will promote city sustainable development. And it is characteristic of the naturalness, economy and sociality. Based on present situation of chinese ecology community construction, some strategies are presented, incuding that the first is urban planning at macro-level; the second is spatial plan, transportation system, service facilities and green space system at medium measure; the third is water environment plan, energy plan, architectural design from at micro level; the fourth is community housing structure and public participation from social policies.


Entropy ◽  
2018 ◽  
Vol 20 (10) ◽  
pp. 732
Author(s):  
Qiang Han ◽  
Deren Yang

Under the infrastructure of three gradually deepening layers consisting of System, Service and Software, the information entropy of the Trustworthy Workflow Management System (TWfMS) will evolve from being more precise to more undetermined, due to a series of exception event X occurring on certain components (ExCs), along with the life cycle of TWfMS, experienced in its phased original, as-is, to-be, and agile-consistent stages, and recover, more precisely again, by turning back to the original state from the agile-consistent stage, due to its self-autonomous improvement. With a special emphasis on the system layer, to assure the trustworthiness of WfMS, this paper firstly introduces the preliminary knowledge of the hierarchical information entropy model with correlation theories. After illustrating the fundamental principle, the transformation rule is deduced, step by step, followed by a case study, which is conducive to generating discussions and conclusions in the different research areas of TWfMS. Overall, in this paper, we argue that the trustworthiness maintenance of WfMS could be analyzed and computational, through the viewpoint that all the various states of TWfMS can be considered as the transformation between WfMS and its trustworthiness compensate components, whose information entropy fluctuate repeatedly and comply with the law of the dissipative structure system.


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