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2008
EURASIP Journal on wireless …, 2006
This paper analyzes the authentication and key agreement (AKA) protocol for universal mobile telecommunications system (UMTS) mobile networks, where a new protocol is proposed. In our proposed protocol, the mobile station is responsible for generating of authentication token (AUTN) and random number (RAND). The home location register is responsible for comparison of response and expected response to take a decision. Therefore, the bottleneck at authentication center is avoided by reducing the number of messages between mobile and authentication center. The authentication time delay, call setup time, and signalling traffic are minimized in the proposed protocol. A fluid mobility model is used to investigate the performance of signalling traffic and load transaction messages between mobile database, such as home location register (HLR) and visitor location register (VLR) for both the current protocol and the proposed protocol. The simulation results show that the authentication delay and current load transaction messages between entities and bandwidth are minimized as compared to current protocol. Therefore, the performance and the authentication delay time have been improved significantly.
Proceedings of the IEEE, 1991
Service (PTS) are dealt with in this paper. Mobile communications services will allow a user tu roam within a network. Thus there will be a need to identih several types of objects (terminals, network points oJ attachment, users, Customer Premises Networks. etc.). The mobility properties of these objects will necessitate dynamic bindings beween their addresses and naines. Moreover, the situation is further complicated since the mobility may be embedded. A mobile user may employ a mobile terminal in U mobile Customer Premises Network (CPN). Therefore, in UMTS and PTS there is a need for dynamic. binding of various identifiers with location information data. The exclusive use of Personal Telecommunication Numbers (PTN's) as Dialing Numbers (ON) is proposed in IBCN for UMTS and PTS. That is, PTN's will be used (during dialing) for making calls to mobile terminals, mobile users, as well as fixed subscribers. When the personal communication senice is not provided. the DN corresponds to the terminal number of the equipment (fixed or mobile) of the culled subscriber. Also, a proposul for the UMTS and PTS numbering plan is presented.
With his latest thematic study of democratic Athens P. reassesses the argument, originally offered by Demosthenes and Plutarch and subsequently championed by A. Böckh, that the Classical Athenians were guilty of spending more on their theatrical spectacles than on their military exploits. Here, by assembling the fragmentary fifth-and fourth-century evidence and then judiciously deploying financial analyses, P. hopes to 'settle debates about public spending in classical Athens' and confirm 'the priorities that the Athenians set for their state' (p. xv). P.'s consideration of that diverse evidenceboth literary and epigraphic, and dating largely from the 420s, 370s and 330sallows him not merely to confirm (contra Böckh) that the military was far and away the Athenians' most expensive public undertaking, but also to develop a clear model of Athenian public expenditures that ancient historians will find useful both in its own right and as a catalyst for future study. Early in his introductory remarks P. sets forth a programmatic tricolon worthy of Lycurgus: 'The major public activities of the Athenian dêmos ("people") were the staging of religious festivals, the conducting of politics, and the waging of wars' (p. 1). The scholarly 'public spending debates' subsequently outlined by P. concern both the absolute and the relative levels of Athenian expenditures on such activities: was more money spent on festivals or on fighting? Was the money necessary for maintaining the democracy available domestically or only as a result of empire? Writing two centuries after Böckh and his Die Staatshaushaltung der Athener (1817) set the agenda for the modern study of Athenian finance, P. takes advantage of the additional sources at his disposal: beyond the hundreds of newly-uncovered Attic inscriptions and the text of the Aristotelian Constitution of the Athenians, he readily employs recent studies by scholars such as E. Csapo, W. Slater and P. Wilson detailing the financial as well as cultural contexts of (e.g.) the City Dionysia and the Athenian khoregia. Throughout this volume P. is scrupulous in his use of these primary and secondary sources: he readily acknowledges the conclusions reached by other scholars, the limitations of the ancient evidence and those occasions whenall too oftenhe must proceed more speculatively. Some more sceptical readers may be surprised by how adamant P. is about the dêmos' knowledge and control of Athenian finance; they will benefit from reading his arguments (pp. 16-24) and considering his cited sources, even if they still wonder exactly how well, and how often, Athenian practice followed theory. As the aforementioned tricolon suggests, the body of this volume models Athenian expenditures oni.e. provides 'costings' forfestivals (Chapter 2), democracy (Chapter 3) and war (Chapter 4). Of the remarkable number of festivals celebrated by the Athenians two were especially significant, culturally as well as financially: the annual City Dionysia and, every fourth year, the Great Panathenaia. Following in the footsteps of P. Wilson's (2008) costing of the City Dionysia (28 t. 5200 dr., with slightly more than half deriving from the baseline of private liturgical expenditures), P. begins by costing the Great Panathenaia. Drawing together the prize (c. 1,447 amphorae of sacred olive oil) and public and private liturgical contributions, P. reaches a total of 25 t. 1725 dr., oramortised over the four-year periodsome 6t. 1931 dr. annually. Ultimately P. reckons that these two festivals accounted for some 35% of Athenian festival THE CLASSICAL REVIEW
Urdu Science Monthly Magazine, 2023
Title story deals with the success of India's Moon Mission, World Sight Day, Balanced Nutrition and much more for every one's interest.
Leuven UP, 2024
In this Prelude to Homo Mimeticus II, I step back to the great examples of Homer and Machiavelli to flesh out new conceptual arrows for mimetic studies--including mimetic agonism, hypermimesis and the mimetic unconscious--in view of furthering the mimetic turn or re-turn.
The study set as its objective to assess the status of Addis Ababa City in the Ethiopian federal dispensation based on desktop review of pertinent literatures on governance issues of federal capitals and legal documents and reports concerning Addis Ababa. In doing so, the governance of Addis Ababa in light of existing federal capital models has been assessed. The study tried to answer the following questions: How could the governance of Addis Ababa is to be described in light of the Ethiopian federal dispensation? Why was the federal capital models initially chosen?
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