ASPECTS OF USING CYBERSPACE FOR CORPORATE MANAGEMENT SYSTEMS

Даны определение термина «киберпространство» и описательное представление киберпространства как пространства. Проведено сравнение свойств физического пространства и киберпространства,а также системы связи и киберпространства. Выделены ключевые отличия киберпространства от систем связи. Рассмотрена роль киберпространства в предоставлении услуг корпоративным системам управления. Показано, что использование результатов исследования в совокупности со структурно-функциональной моделью киберпространства позволит разработать его аналитико-имитационную модель. A definition of the term "cyberspace" and a descriptive representation of cyberspace as a space are given. A comparison of the properties of physical space and cyberspace, as well as the communication system and cyberspace, is given. Key differences between cyberspace and communication systems are highlighted. The role of cyberspace in providing services to corporate management systems is considered. It is shown that the use of the results of the study in conjunction with the structural and functional model of cyberspace will allow to develop its analytical and simulation model. CYBERSPACE, INFORMATION SERVICES, COMMUNICATIONS SYSTEM, CORPORATE MANAGEMENT SYSTEM

Nuclear Weapons Law

This book examines the law relating to the possession, threat or use of nuclear weapons. By addressing in logical sequence the law regarding sovereignty, the threat or use of force, the conduct of nuclear hostilities, neutrality, weapons law and war crimes, the book illustrates the topics that an effective national command, control and communications system for nuclear weapons must address. Guidance is given on intractable issues, such as the responsibilities of remote submarine commanders. The continuing relevance of the ICJ's Nuclear Advisory Opinion is assessed, and the prospects for the Treaty on the Prohibition of Nuclear Weapons are discussed. The book has been written in an accessible style so that it will be equally useful to lawyers and practitioners, including relevant commanders, politicians, policy staffs and academics. The objective is to state the law accurately and to explain its implications and provide practical guidance in this most sensitive area.

Stellar Gravitational Lens Engineering for Interstellar Communication and Artifact SETI

Several recent works have proposed a “stellar relay” transmission system in which a spacecraft at the focus of a star’s gravitational lens achieves dramatic boosts in the gain of an outgoing or incoming interstellar transmission. We examine some of the engineering requirements of a stellar relay system, evaluate the long-term sustainability of a gravitational relay, and describe the perturbations and drifts that must be actively countered to maintain a relay-star-target alignment. The major perturbations on a relay-Sun-target alignment are the inwards gravity of the Sun and the reflex motion of the Sun imparted by the planets. These ∼m s−1 yr−1 accelerations can be countered with modern propulsion systems over century-long timescales. This examination is also relevant for telescope designs aiming to use the Sun as a focusing element. We additionally examine prospects for an artifact SETI search to observe stellar relays placed around the Sun by an extraterrestrial intelligence and suggest certain nearby stars that are relatively unperturbed by planetary systems as favorable nodes for a stellar relay communications system.

A Simple Queuing Model for Molecular Communications Receivers

The complexity of molecular communications system, involving a massive number of interacting entities, makes scalability a fundamental property of simulators and modeling tools. A typical scenario is that of targeted drug delivery systems, which makes use of biological nanomachines close to a biological target, able to release molecules in the diseased area. In this paper, we propose a simple although reliable receiver model for diffusion-based molecular communication systems tackling the time needed for analyzing such a system. The proposed model consists of using an equivalent markovian queuing model, which reproduces the aggregate behavior of thousands of receptors spread over the receiver surface. It takes into account not only the fact that the absorption of molecules can occur only through receptors, but also that absorption is not an instantaneous process, and may require a significant time during which the receptor is not available to bind to other molecules. Our results, expressed in terms of number of absorbed molecules and average number of busy receptors, demonstrate that the proposed approach is in good agreement with results obtained through particle-based simulations of a large number of receptors, although the time taken for obtaining the results with the proposed model is order of magnitudes lower than the simulation time. We believe that this model can be the precursor of novel class of models based on similar principles that allow realizing reliable simulations of much larger systems.

A Comprehensive View of the Initiatives on the Research of Sixth-Generation Mobile Systems

The Fifth-Generation (5G) mobile communications system is now on its way to being deployed worldwide and the scale of 5G subscribers in some region has reached a very large scale. However, the attention of academia and industry is increasingly shifting towards the next generation technology called Sixth Generation (6G) and many pioneering works are being kicked off by the major players in this filed, placing an important milestone in the history of mobile communications. At this juncture, a view of the current state of the art of 6G research and a vision of future communications are of great interest. This paper thus aims to investigate up-to-date 6G research programs, activities, and main viewpoints of representative countries, institutions and companies worldwide. Then, the key technologies are outlined and a vision on ``What 6G may look like?" is provided. This paper aims to serve as an enlightening guideline for interested researchers to quickly get an overview when kicking off their 6G research.

Age of Information Based URLLC-enabled UAV Wireless Communications System

<div>This paper considers an unmanned aerial vehicles (UAV) communication network, where UAV operate as an aerial mobile relay between a source and a destination of the network. To capture the “timeliness” of the received information at the destination node, a new performance metric named age of information (AoI) is considered. In addition, a short packet communication scheme maintains low latency in the proposed UAV wireless communication system. The finite block-length theory investigates the performances of short packet communications scheme in the UAV-assisted wireless communications system. In this paper, the Average Age of Information (AAoI) is estimated by applying the Stochastic Hybrid Systems (SHS) model. The SHS model comprises discrete states represents events that reset the AoI process and continuously dynamics that represent linearly growing age processes. Finally, a closed-form expression for the AAoI of the proposed UAV wireless communication system is derived and it can be used to estimate the optimal altitude, block length and other parameters.</div>

Age of Information Based URLLC-enabled UAV Wireless Communications System

<div>This paper considers an unmanned aerial vehicles (UAV) communication network, where UAV operate as an aerial mobile relay between a source and a destination of the network. To capture the “timeliness” of the received information at the destination node, a new performance metric named age of information (AoI) is considered. In addition, a short packet communication scheme maintains low latency in the proposed UAV wireless communication system. The finite block-length theory investigates the performances of short packet communications scheme in the UAV-assisted wireless communications system. In this paper, the Average Age of Information (AAoI) is estimated by applying the Stochastic Hybrid Systems (SHS) model. The SHS model comprises discrete states represents events that reset the AoI process and continuously dynamics that represent linearly growing age processes. Finally, a closed-form expression for the AAoI of the proposed UAV wireless communication system is derived and it can be used to estimate the optimal altitude, block length and other parameters.</div>

Technical and Vocational Education and Technology Transfer: Departments of Computer and Communications at the Public Authority for Applied Education and Training, PAAE&T, Kuwait, As A case Study

The transfer of technology plays a vital role in the advancement of a country, particularly in gulf states where the shortage of skilled and semi-skilled in visible in essential sectors on their economy (e.g., oil, health, water and electricity). The transfer of technology is considered a significant factor in the development, and is most effective and efficient. When it is absorbed in such a way as to provide a springboard for the move into the next stage of industrialization. The transfer of technology to Kuwait has brought with it enormous changes in terms of industrial development, lower the rate of youth unemployment, increase wages, and upgraded the standard of living. However, the success of technology transfer depends extensively on the contribution of the imported technology in building a sound indigenous scientific and technical infrastructure. In other word, the ability to transfer the know-how and know-why to indigenous manpower that are capable of managing, monitoring, maintaining, and adapting the imported technology to suit local environment. In this paper, I present some of the empirical results and observations which describe the interactions between the supplier of technology (Internet Works and Communications System) and the recipient of the technology (PAAE&T) in the field of technology transfer. In other word, whether the PAAE&T have taken the opportunity, while building its new headquarter, in the transfer of technology from the supplier of internet works and communications system to its academic staff in the various computer and communication academic departments at the PAAE&T colleges and institutions. The paper argues that, for effective and efficient transfer of technology, the recipient (PAAE&T) must ensure that the agreement with the supplier of Internet Works and Communications System must include calluses that would allow the PAAE&T academic staff in its various computer and communications academic departments in its various colleges and institutions to acquire the technology embedded in the agreement. The paper concludes that the transfer of technology and the building of a local scientific and technical infrastructure must be viewed by Kuwaiti decision-makers as a complementary to one another. Thus, reducing, to great extent, the level of dependence on expatriate, particularly in essential sector of the economy (e.g., oil, electricity and water, health).