research centers


Search results: Found 3

Listing 1 - 3 of 3
Sort by

Article
Simulation Model Of Hotels By Using Discrete Event System
محاكاة لنمذجة عمل الفنادق اعتمادا على نظام الحدث المتقطع

Author: Zena Salah Hussein زينة صالح حسين
Journal: Journal of Engineering and Sustainable Development مجلة الهندسة والتنمية المستدامة ISSN: 25200917 Year: 2014 Volume: 18 Issue: 1 Pages: 144-151
Publisher: Al-Mustansyriah University الجامعة المستنصرية

Loading...
Loading...
Abstract

In this paper propose a new approach for the hotel management problem. The proposal approach is based on counting “prices for Room and Suite ” and provide a varying discount for the guests in state of reservation in previous time. the goal is being to maximize the guest satisfaction at affordable prices and provide priority to reservation from guests than without reservation, and taking into account the other services that offer free booking in the case of him. in this paper apply an optimization algorithm was applied by using Monte Carlo simulator that simulates all the hotel’s processes, such as reservations arrivals, Length of Stay, room prices, suite prices, etc.

في هذا البحث يقترح نهجا جديدا لمشكلة إدارة الفنادق. ويستند النهج المقترح على حساب "أسعار الغرفة والجناح"، وتقديم خصم للنزلاء في حالة الحجز في وقت سابق. كما انه يهدف البحث إلى تحقيق أقصى قدر من رضا للنزلاء بأسعار معقولة وتوفير الأسبقية للنزيل الذي لديه حجز مسبق عن غيره ، مع الأخذ بعين الاعتبار الخدمات الأخرى التي تقدم مجانا في حالة الحجز من دونه .كما وانه في هذه الدراسة تم تطبيق امثل خوارزمية وذلك باستخدام طريقة محاكاة تحاكي جميع العمليات في الفندق، مثل حجوزات الوافدين، طوله مدة الإقامة، أسعار الغرف، سعر الجناح، الخ.

Keywords

Hotel --- Reservation --- without Reservation --- Model --- Room --- Suite --- guest --- Price.


Article
New Pseudo-Random Number Generator System Based on Jacobian Elliptic maps and Standard Map

Loading...
Loading...
Abstract

Abstract- Chaotic systems have numerous properties, for example: mixing property,sensitivity to initial conditions parameters, structural complexity and deterministicdynamics. These properties were investment in the last decade for cryptographicapplications and developments of pseudorandom number/bit generator. The paper proposenew pseudorandom number (bits) generator (PRNG) based on the Jacobian elliptic chaoticmaps and standard map. The principle of the method consists in generating binary sequencefrom elliptic chaotic maps of cn and sn types. These sequence positions is permuted usingstandard map. The performance of the generator is studied through conventional statisticalmethods and also using the NIST test suite. The results show that the produced sequencespossess high randomness statistical properties and good security level which make itsuitable for cryptographic applications.


Article
Propose an Arabic CAPTCHA System based on Chaotic Maps

Authors: Mariam T. Sulaiman --- Nidaa F. Hassan
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 1 Part (B) Scientific Pages: 48-52
Publisher: University of Technology الجامعة التكنولوجية

Loading...
Loading...
Abstract

CAPTCHA is the facility that prevents web bots from accessingthe web services by generating tests to check whether the user is human orcomputer program. In this paper, a new pseudo-random bits generator basedon chaotic system is offered to generate Arabic letters and numbers forCAPTCHA system. The proposed generator uses two Jacobian ellipticChebyshev rational maps that are combined in the algorithm to produce ablock of 32bits in each iteration. A specified number of bits are selected fromthe resulted blocks to be converted to a set of Arabic letters and numbers.National Institute of Standards and Technology (NIST) statistical test suiteare used to assess the generator randomness, all tests has been passed exceptLongest Run of Ones in a Block Test, Binary Matrix Rank Test and RandomExcursions Test.

Listing 1 - 3 of 3
Sort by
Narrow your search

Resource type

article (3)


Language

English (2)

Arabic and English (1)


Year
From To Submit

2018 (1)

2015 (1)

2014 (1)