Mathematical methods for modelling price fluctuations of financial times series

Statistical and Fourier analysis methods of time series representing fluctuations of stock market in general and Indian stock markets in particular are well known. This work is motivated by a recent paper by Guharay [Operations Research and Financial Engineering, Princeton University, Princeton, NJ, preprint, 2002] where he has studied trends in the S & P 500 for various time periods using wavelet tools. Our paper deals with a few Indian and Saudi stock prices and return fluctuation for a certain period of time. The main objective of the analysis is to understand the dynamics of the Indian and Saudi stock markets. We look for similarities, point of abrupt changes, normalized data, return, volatility, graph, pure and noise part, correlation lengths, and signal-to-noise ratio.     

Christmas Market Facing Problems

Christmas is a festival in European and American countries,therefore,it will bring a lot of profit for the manufactories which produce the decorations and gifts especially for the Christmas.However,with the spread of the financial crisis,the Christmas industry has undergone a recession period,and the profit has become little and little.The thesis will analyze the problems based on a real case study——Happy Christmas Company.     

单片机综合实验箱的研制

介绍了一种新型单片机综合实验箱的研制目的,阐述该装置的基本设计思想、总体设计方案和结构特点,介绍了该装置基本模块的功能。     

从民俗文化视野透视“交往与馈赠”的哲学意义

在礼尚往来的交往过程中,不同的历史阶段,交往习俗又表现出不同的特征。其中一个总的发展趋势,就是在交往中总是"人、物、事"这三个因素精神性追求的增长;这三者的完美追求和交融,构成一个时代交往习俗和文明的标志。通过对这种"交往与馈赠"习俗的透视,可以折射出不同时期它所包含的哲学意义。     

Tilting at Windmills

No abstract available for this article.     

《杜十娘怒沉百宝箱》与晚明社会

《杜十娘怒沉百宝箱》是晚明社会思潮的产物。它超越了前代负心故事;反映了晚明人的金钱观;颂扬了对自身人格和尊严的捍卫与维护。从而,它优于同时代的其它短篇小说而成为最璀璨的明珠之一。     

梵净山礼品瓜立体栽培技术

总结3年栽培经验,得出栽培技术要点:中间上架,立体栽培;选用良种,严格轮作;电热育苗,大钵移栽;作床铺线,调控检测;温汤浸种,烘箱催芽;配制钵土,装钵播种;拱棚夜帘,栽前炼苗;整地施肥,安好滴灌;适时定植,加强管理;适时采收,争创名牌;割蔓再生,一种多收;藤蔓摘心,采瓜割蔓;加强肥水,整枝理蔓;辅助授粉,病虫早治。     

基于PSB的高频开关电源的仿真分析

分析了采用Buck变换器的PWM控制的开关电源的仿真问题,并利用PSB建立了一个离散的、非线性开关电源模型。通过在仿真模型中修改电路参数,可方便地进行系统的优化设计,而且可以部分地替代硬件实验,极大提高开发效率。     

基于WIFI技术的矿井下无线语音通信系统

目前,小灵通已经被强制退市,迫切需求一种新的通信方式实现井下无线通信。本文提出了运用WiFi无线宽带技术于煤矿井下无线语音通信系统中,结合现有的WLAN网络实现无线的VoIP语音通话。     

如何用现代声乐理念理解"三种唱法"

世界上只有一种科学的发声方法.声乐是集音乐学、生理学、心理学、解剖学、声学、语言学、哲学等为一体的综合性学科."美声"、"民族"、"通俗"是三种风格.以往对"美声唱法"、"民族唱法"、"通俗唱法"的错误理解应当纠正.