نتایج جستجو برای: physical security

تعداد نتایج: 830792  

Journal: :IET Control Theory & Applications 2017

Journal: :Cryptography 2022

In contrast to the network security that relies on upper-layer encryption for confidentiality and authenticity of communications, physical layer (PLS) exploits uniqueness randomness channel encrypt information enhance system. this paper, we study PLS a polar-coded wireless communication To be more specific, leverage unique properties in polar code construction propose quality indicator (CQI)-ba...

2011
Bruce R. Matthews

The above Webster’s definition can be restated for the security practitioner as controlled access. In fact, every aspect of an IT security practitioner’s job revolves around the process of defining, implementing, and monitoring access to information. This includes physical access. When to use it, how much, and the best way to integrate it with traditional IT security methods, are concepts the I...

Background and Aim: Long time working with seriously ill patients and handling protective role for the patients with specific diseases makes nurses susceptible to various types of physical disorders, which can lead to mood disorders, social isolation, fatigue, anger, depression and anxiety. The aim of this study was to compare the general health level of nurses working in educational hospitals ...

2016

Internet of Things (IoT) is a network of physical objects connected to internet. Physical objects embedded with RFID, sensor and so on which allows object to communicate with each other. The physical objects are provided with unique identifier. Since the IoT is highly heterogeneous, security is a big challenge in IoT. In this paper we analyzed the various security requirements and challenges in...

2015
Tianbo Lu Jiaxi Lin Lingling Zhao Yang Li Yong Peng

Governments, companies, universities and research institutes are pushing the research and development of cyber-physical systems (CPS). However, the development of cyberphysical systems is constrained by security factors. According to this situation, this paper put forward a CPS security model, which contains security objectives, basic theories, simulation, and CPS framework, summarizes security...

Journal: :CoRR 2013
Biao He Xiangyun Zhou Thushara D. Abhayapala

Physical layer security is an emerging technique to improve the wireless communication security, which is widely regarded as a complement to cryptographic technologies. To design physical layer security techniques under practical scenarios, the uncertainty and imperfections in the channel knowledge need to be taken into consideration. This paper provides a survey of recent research and developm...

2016
Hausi A. Müller Marin Litoiu John Mylopoulos

Advances in the interconnected capabilities of cyber physical systems (CPS) affect virtually every engineered system. Today, software approaches dominate all aspects of connecting the physical and cyber worlds in part due to the convergence of computing, control and communications software technologies. Unfortunately, software technologies are more vulnerable to cybersecurity problems than trad...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

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