196,070 research outputs found
The social context of LAN gaming
No full textIncludes abstract.Includes bibliographical references (leaves 58-61).Playing video games at a Local Area Network (LAN) has become a complex social activity. Engaging with these games requires more than simply accomplishing the games’ objectives: it is also a process of socialisation within a community of gamers. Through my observation of players' activities at a Cape Town based LAN event, I begin to outline where, when and how social learning and sharing occurs at these events. I will show how playing games in a LAN setting can teach valuable interpersonal and social skills
A single impurity in an ideal atomic fermi gas: current understanding and some open problems
No full textVerification of C-detectability using Petri nets
No full textDetectability describes the property of a system to uniquely determine, after a finite number of observations, the current and the subsequent states. In this paper, we extend detectability to C-detectability that only requires that a given set of crucial states can be distinguished from other states. We define four types of C-detectability in the framework of labeled Petri nets: strong C-detectability, weak C-detectability, periodically strong C-detectability, and periodically weak C-detectability. Moreover, we propose efficient approaches to verify such properties in the case of bounded labeled Petri net systems. The proposed approaches use the notion of basis marking and thus do not require an exhaustive enumeration of the reachability space
An evaluation of the performance of IEEE 802.11a and 802.11g wireless local area networks in a corporate office environment
Full text linkIn recent years there has been considerable interest in the development of standards for wireless local area networks. In particular, IEEE's 802.11a and 802.11g both employ coded orthogonal frequency division multiplexing (COFDM) but operate in different frequency bands. In this paper, the performance and relative merits of 802.11a and 802.11g are compared for the scenario of a corporate office wireless LAN application. It is shown that for comparable scenarios 802.11g achieves superior range but that 802.11a achieves higher data rates. Thus the two standards are found to have complimentary strengths and weaknesse
Particularities of security design for wireless networks in small and medium business (SMB)
Full text linkSmall businesses often have small budgets, which often means no fulltime IT staff or no possibility to hire a security consultant to set up a wireless LAN properly. This paper tries to develop a methodology for designing security for wireless networks in SMB. There are more security options to choose from, when setting up a wireless network, thus the security features needed for a company must be carefully taken in consideration. The benefits from one security feature must be balanced with the implementation and maintenance cost and with the risk of not getting the security level wanted.security, wireless, communication networks
Diseño de una red LAN en la Óptica M&C
No full textÓptica M&C es una empresa que presta los servicios salud visual (optometria) desde hace trece (13) años; el crecimiento continuo de la óptica, fortalecimiento y la permanencia en el mercado exigen mejoras tecno científicas en todos los procesos (estratégicos, misionales y de apoyo) y que estos interactúen entre sí para poderlos controlar, medir, evaluar y hacerles un seguimiento continuo. El objetivo principal de este proyecto es “diseñar una Red LAN en la óptica M&C capaz de gestionar todos los procesos (estratégicos, misionales y de apoyo) que le permita a la gerencia controlar, medir, evaluar y hacer un seguimiento continuo a todos los procesos” durante estos 13 años de gestión de la óptica M&C a través de la experiencia, observación, intuición, sugerencias recibidas por el equipo de trabajo y las exigencias de la Secretaria Distrital de Salud de Bogotá, pudimos definir o plantear el siguiente problema de investigación “ ¿ es importante diseñar una Red LAN en la óptica M&C que gestione todos los procesos y que permita a la gerencia controlar, medir, evaluar y hacer un seguimiento continuo a todos los procesos?” Los resultados alcanzados dentro de esta investigación son el encadenamiento y mejoramiento continuo de todos los procesos; razón por la cual podemos concluir que la óptica M&C necesita procesar y organizar adecuadamente toda la información, interactuar todos los procesos, mejorar el organigrama de la óptica, adquirir equipos de alta tecnología, adquirir programas eficaces, capacitar a todo el personal, establecer estándares e indicadores de gestión y analizar los resultados para ajustarlos y mejorar el servicio al cliente interno y externo.Capítulo I: Esquematización Del Tema. --
1.1.Descripción Del Tema. --
1.2.Descripción Del Problema. --
1.3.Justificación. --
1.4.Objetivos. --
1.4.1.General. --
1.4.2.Específicos. --
Capitulo II: Esquematización Teórica. --
2.1 Marco Teórico. --
2.2. Características De La Red Lan. --
2.4. Norma Eia/Tia 568. --
Capitulo III. Esquematización Ingenieril. --
3.1.Análisis Del Proyecto. --
3.2.Estructura Temática. --
3.3.Análisis Y Definiciones De Requerimientos. --
3.4.Diseño Del Proyecto. --
3.4. Como Funcionan Las Señales En La Red. --
3.5.Configuración Del Switch. --
3.6. Encriptación. --
3.7 Seguridad. --
Conclusión. --
Anexos
A Rb-Sr Isotopic Study of Andesites from Lu-Tao, Lan-Hsu and Hsiao-Lan- Hsu, Eruption Ages and Isotopic Heterogenity
No full textsj-pdf-1-lan-10.1177_00236772221138398 - Supplemental material for Validity of a novel ex vivo porcine liver perfusion model for studying haemostatic products
No full textSupplemental material, sj-pdf-1-lan-10.1177_00236772221138398 for Validity of a novel ex vivo porcine liver perfusion model for studying haemostatic products by Edwin A Roozen, Roger MLM Lomme, Nicole UB Calon, Michiel C Warlé and Harry Van Goor in Laboratory Animals</p
IEEE 802.11n MAC frame aggregation mechanisms for next-generation high-throughput WLANs [Medium access control protocols for wireless LANs]
No full textIEEE 802.11n is an ongoing next-generation wireless LAN standard that supports a very highspeed connection with more than 100 Mb/s data throughput measured at the medium access control layer. This article investigates the key MAC enhancements that help 802.11n achieve high throughput and high efficiency. A detailed description is given for various frame aggregation mechanisms proposed in the latest 802.11n draft standard. Our simulation results confirm that A-MSDU, A-MPDU, and a combination of these methods improve extensively the channel efficiency and data throughput. We analyze the performance of each frame aggregation scheme in distinct scenarios, and we conclude that overall, the two-level aggregation is the most efficacious
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