نتایج جستجو برای: communication and traffic infrastructures

تعداد نتایج: 16879347  

Journal: :Journal of Computer Security 2002
Alec Yasinsac

Secure electronic communication relies on cryptography. Even with perfect encryption, communication may be compromised without effective security protocols for key exchange, authentication, etc. We are now seeing proliferation of large secure environments characterized by high volume, encrypted traffic between principals, facilitated by Public Key Infrastructures (PKI). PKIs are dependent on se...

2013
Alessandra Battisti

Green technologies for the environmental upgrading of infrastructures Abstract: Over the last few decades, the globalization phenomenon has determined the exponential development – from an economic, cultural and political standpoint – of traffic flows, the number of means and infrastructures involved in communication and exchange. At the same time, these represent one of the most complicated en...

Journal: :مجله علوم اعصاب شفای خاتم 0
adel ebrahimpour taleghani hospital, shahid beheshti university of medical sciences, tehran, iran narges beyraghi taleghani hospital, shahid beheshti university of medical sciences, tehran, iran mohammad hossein chegini orthopedic surgeon, atieh hospital, tehran, iran

road traffic accidents (rta) are one of the most important causes of death and disability all over the world. in developing countries the problem is more complicated. based on the estimation by unicef, rate of rta in iran is 20 times more than world’s average. in iran among all unintentional fatal injuries inflicted on children under five, traffic related fatalities are the leading cause of dea...

Adel Ebrahimpour, Mohammad Hossein Chegini, Narges Beyraghi,

Road traffic accidents (RTA) are one of the most important causes of death and disability all over the world. In developing countries the problem is more complicated. Based on the estimation by UNICEF, rate of RTA in Iran is 20 times more than world’s average. In Iran among all unintentional fatal injuries inflicted on children under five, traffic related fatalities are the leading cause ...

2017
Ferdinand von Tüllenburg Thomas Pfeiffenberger

Not available services or service interruption could have different impact to our social life. Emails or messages which are not delivered in a proper time-frame could lead to omit a meeting or a discussion with colleagues. Interconnected CPS in different domains, like autonomous driving, smart grids, Industry 4.0, needs a guaranteed and safe delivery of information. Nowadays distributed applica...

پایان نامه :دانشگاه بین المللی امام خمینی (ره) - قزوین - دانشکده مهندسی معماری و شهرسازی 1388

nowadays,tourism industry considered as one of the main sources of income of a country.unfortunately and despite of owning plenty of cultural historical and natural attractions, iran has not reached to a proper position in this field. besides, the historical cities of a country are considered as the income resource and national wealth of it. qazvin with a rich cultural precedent, have suitable ...

Eskandar Momeni,

The investigation showed that the increasing number of deaths and fatalities resulting from driving accidents is mostly related to developing countries especially with intermediate and low social classes which it is resulting from industrialization of the mentioned societies without considering necessary infra structures such as health, safety and environment (HSE). Increasing number of cars, u...

Journal: مدیریت شهری 2015
Fatemeh Mehdi Poor, Reza Rasooli,

The purpose of this study is to explore infrastructures for establishment of electronic municipality in metropolis city of Tabriz. Thisis a descriptive survey and it is an applied one in terms of goal .Total sample consisted of total number of 120 employees in Statistics and Information Technology Department of municipality as well as those working in related sections to information technolog...

2005
George Danezis

In the Second World War, traffic analysis was used by the British at Bletchley Park to assess the size of Germany’s air-force, and Japanese traffic analysis countermeasures contributed to the surprise of their 1941 attack on Pearl Harbour. Nowadays, Google uses the incidence of links to assess the relative importance of web pages, credit card companies examine transactions to spot fraudulent pa...

In this paper, the stability analysis and control design of heterogeneous traffic flow is considered. It is assumed that the traffic flow consists of infinite number of cooperative non-identical vehicular platoons. Two different networks are investigated in stability analysis of heterogeneous traffic flow: 1) inter-platoon network which deals with the communication topology of lead vehicles and...

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