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2011 IEEE Symposium on Business, Engineering and Industrial Applications (ISBEIA)最新文献

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Investigation of noise effects of CMS laser lineshape and frequency fluctuations CMS激光线形和频率波动的噪声效应研究
Pub Date : 2011-12-01 DOI: 10.1109/ISBEIA.2011.6088859
Saktioto, Muhamad Hamdi, D. Irawan, J. Zainal, J. Ali
Lineshape and frequency fluctuations actually cause the optical field of current modulation semiconductor laser (CMS) laser beam to deviate from a pure sine wave [1]. This paper investigates the lineshape of a CMS laser for two distinct types of frequency noise. In the first case the investigation analyzes on the low-pass filter, the frequency noise level is a constant δo below a cutoff frequency but zero above this threshold. In the second case on high-pass filter the frequency noise level is a constant δo above a cutoff frequency but zero below this threshold. Investigations observed inspire us to focus for separation of the frequency noise spectrum into two regions wherein due to the effect of noise on the lineshape is radically different in the slow modulation area in a left side of the diagonal line where the noise contributes to the laser linewidth, with a Gaussian shape, and the other one the fast modulation area in a right side of the diagonal line, where the noise contributes only to the wings of the line (sidebands) and not to the linewidth, thus transforming the lineshape from Gaussian to Lorentzian.
线形和频率波动实际上会导致电流调制半导体激光器(CMS)光束的光场偏离纯正弦波[1]。本文研究了两种不同类型的频率噪声下CMS激光器的线形。在第一种情况下,调查分析了低通滤波器,频率噪声电平在截止频率以下为常数δ 0,但在该阈值以上为零。在高通滤波器的第二种情况下,频率噪声电平在截止频率以上为常数δ 0,但在该阈值以下为零。调查观察启发我们专注的分离频率噪声频谱分为两个区域,由于噪声的影响在缓慢lineshape是完全不同的调制区域左侧的对角线的噪音会导致激光线宽,以高斯形状,和另一个快速调制区域的右边对角线,在噪声贡献才行(显然)的翅膀而不是线宽,从而将线形从高斯线形转换为洛伦兹线形。
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引用次数: 2
Procedure automation with immediate user notification: A case study 具有即时用户通知的过程自动化:一个案例研究
Pub Date : 2011-12-01 DOI: 10.1109/ISBEIA.2011.6088816
N. Samsudin, Shamsul Kamal Ahmad Khalid, Amanti Md Yusoff, M. Ihkasan, Zulkifli Senin
There are various procedures in a university that can be automated with Information and Communication Technology (ICT) such as leave application, room reservation, facility booking and, laboratory or library material application. Adding such “inventory based systems” with an immediate feedback notification loop to the user will enhance the application process and increase user satisfaction. In this paper, we present automation of a stationary request procedure with Short Message Service (SMS) notification. As a case study, we designed and implemented the system at the Faculty of Computer Science and Information Technology (FCSIT), Universiti Tun Hussein Onn Malaysia. The descriptions of the system development process are presented. Essentially, the principle idea of the system can be used as a framework to effectively automate any university or business procedures that requires notification.
大学里有很多程序可以通过信息和通信技术(ICT)自动化,比如请假申请、房间预订、设施预订以及实验室或图书馆材料申请。添加这种带有即时反馈通知循环的“基于库存的系统”将改善应用过程并提高用户满意度。在本文中,我们提出了一个具有短消息服务(SMS)通知的静态请求过程的自动化。作为案例研究,我们在马来西亚敦侯赛因大学计算机科学与信息技术学院(FCSIT)设计并实施了该系统。对系统的开发过程进行了描述。从本质上讲,系统的基本思想可以用作一个框架,以有效地自动化任何需要通知的大学或业务流程。
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引用次数: 2
Diameter patterns of 5-year old Karas (Aquilaria malaccensis) agroforestry stands 5年生马来沉香农林业林分直径格局
Pub Date : 2011-12-01 DOI: 10.1109/ISBEIA.2011.6088782
N. Rahman, M. Suratman, A. Ghani, T. F. Ying
The work conducted in this study is based on a preliminary data collection for assessing a soil status in a 5-year old Karas agroforestry plantations in Rembau, Negeri Sembilan, Malaysia. Three agroforestry components involved in this study include (1) Karas (Aquilaria malaccensis) monoculture, (2) Karas intercropped with lemongrass, and (3) Karas intercropped with guava. Three replicative plots measuring at 6 m × 5 m were established for each component. Each plot consists of a total of 90 Karas trees. The diameter at breast height (DBH) of Karas trees was measured in each plot. From the field measurements, the means of tree DBH in all three plots are 5.74 cm, 4.23 cm and 6.65 cm, respectively. Analysis of variance (ANOVA) revealed that there is a significant difference in the mean DBH of Karas tree between components (P≤0.05). Karas intercropped with guava recorded a significantly greater DBH than the other two components (P≤0.05). This could be due to the intercropping effects of Karas with different components of agroforestry system. The results from this study will be used for subsequent investigation in the assessments of growth performance of Karas under different intercropping components.
本研究中开展的工作是基于对马来西亚森美兰州Rembau一个5年历史的Karas农林业种植园土壤状况进行评估的初步数据收集。本研究涉及三个农林业组成部分,包括:(1)单一栽培卡拉斯(malaccensis),(2)卡拉斯间作柠檬草,(3)卡拉斯间作番石榴。每个组分建立3个6 m × 5 m的复制样地。每个地块由90棵卡拉斯树组成。在每个样地测量卡拉斯树胸径(DBH)。3个样地的平均胸径分别为5.74 cm、4.23 cm和6.65 cm。方差分析显示,各成分间卡拉斯树的平均胸径差异显著(P≤0.05)。番石榴间作柠条的胸径显著高于其他两种成分(P≤0.05)。这可能是由于农林业系统不同组成部分的套作效应所致。本研究结果将为今后不同套作成分下柠条生长性能的评价提供依据。
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引用次数: 0
A review paper on fiber-optic sensors and application of PDMS materials for enhanced performance 综述了光纤传感器及PDMS材料在增强性能方面的应用
Pub Date : 2011-12-01 DOI: 10.1109/ISBEIA.2011.6088858
O. Sidek, Muhammad Hassan Bin Afzal
Fiber optic sensing technology is one of the fastest growing technologies in the modern day science. Optical fiber sensors draw more and more interests of researchers and application engineers for its exclusive and very valuable characteristics. It is mainly used to sense the physical and chemical properties such as micro-bending, strains, vibrations, accelerations, linear and rotary position, temperatures, pressures, determination of pH, refractive index of liquid solution, pipeline condition monitoring etc. furthermore, fiber optic sensors have a variety of special benefits for example faster response, low-cost fabrication, very light weight, highly sensitive plus non-reactive to electromagnetic interference. Fiber optic sensors can also be classified under various types based on sensing methods and applications. These distinctive and valuable application features facilitate an extensive range of industries such as biomedical, aerospace, structural health monitoring, transportation, oil-pipe condition etc. This paper discusses about the basic working principle of fiber optic sensing technology, various types of fiber optic sensors and their applications and future scope of fiber optic sensors. This paper also discusses about PDMS materials as the coating for fiber optic sensors for improved and enhanced performance.
光纤传感技术是现代科学中发展最快的技术之一。光纤传感器以其独特的、极具价值的特性引起了越来越多的研究人员和应用工程师的兴趣。它主要用于感知物理和化学性质,如微弯曲,应变,振动,加速度,线性和旋转位置,温度,压力,pH值的测定,液体溶液的折射率,管道状态监测等。此外,光纤传感器具有各种特殊的优点,例如响应速度快,制造成本低,重量轻,高灵敏度和对电磁干扰无反应。根据传感方法和应用的不同,光纤传感器也可以分为不同的类型。这些独特而有价值的应用特性促进了广泛的行业,如生物医学,航空航天,结构健康监测,运输,输油管道状况等。本文论述了光纤传感技术的基本工作原理、各种类型的光纤传感器及其应用以及光纤传感器的未来发展范围。本文还讨论了PDMS材料作为光纤传感器的涂层,以改善和增强其性能。
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引用次数: 12
Predicting Malaysia business cycle using wavelet analysis 用小波分析预测马来西亚经济周期
Pub Date : 2011-12-01 DOI: 10.1109/ISBEIA.2011.6088841
Samsul Ariffin Abdul Karim, Bakri Abdul Karim, F. Andersson, M. Hasan, J. Sulaiman, R. Razali
Wavelet transforms are capable to decompose time series at various level which corresponds to the resolution of the decomposition. We can find the trend, cycle, noise, structural break etc. This is where wavelets are so efficient in studying characteristics of the any time series. In this present article, we study the use of wavelet (symlet 16) to detect the business cycle in Malaysia. Firstly we decompose the time series then we study the long-run trend and we filtered the high frequency components and finally we find the business cycle in Malaysia. The results indicated the existence of business cycles for GDP data in Malaysia which is strongly counter-cyclical.
小波变换能够在不同的层次上分解时间序列,这与分解的分辨率相对应。我们可以发现趋势,周期,噪音,结构断裂等。这就是小波在研究任何时间序列的特征时如此有效的地方。在本文中,我们研究了使用小波(符号16)来检测马来西亚的商业周期。首先我们分解时间序列,然后研究长期趋势,过滤高频成分,最后我们找到马来西亚的商业周期。结果表明存在商业周期的GDP数据在马来西亚,这是强烈的反周期。
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引用次数: 0
The impact of job burnout towards job performance among nurses 护士工作倦怠对工作绩效的影响
Pub Date : 2011-12-01 DOI: 10.1109/ISBEIA.2011.6088836
D. Abdullah, Fong Chui Yuen
The aim of this study was to determine the relationship between job burnout and job performance among nurses. The factors of interest in this study were components of job burnout, which included emotional exhaustion, depersonalization, and diminished personal accomplishment; and job performance of nurses. Survey questionnaire was used to collect the data needed for analysis, which was adapted and modified from Maslach Burnout Inventory (MBI). The respondents were nurses from the private hospital at Perak. Data collected was analyzed using SPSS version 12.0 for Window, and the methods of analysis were Pearson correlation and multiple regression analysis. The findings of this study revealed that there were significant correlations between emotional exhaustion (r=0.305, p=0.006), depersonalization (r=0.239, p=0.031) and job performance. Meanwhile, this study failed to establish a relationship between diminished personal accomplishment and job performance. On the other hand, multiple regression analysis showed that emotional exhaustion was the dominant factor that affecting job performance (β=0.305, r2=0.093). In conclusion, nursing profession is at high risk of job burnout or particularly emotional exhaustion, which will jeopardize nurses' job performance and eventually contribute to deterioration in quality of care.
本研究旨在探讨护士工作倦怠与工作绩效的关系。本研究关注的因素是工作倦怠的组成部分,包括情绪耗竭、人格解体和个人成就感降低;以及护士的工作表现。采用调查问卷收集分析所需的数据,该问卷采用Maslach职业倦怠量表(MBI)进行改编和修改。受访者是霹雳州私立医院的护士。收集的数据采用SPSS 12.0版本进行统计分析,分析方法为Pearson相关分析和多元回归分析。本研究结果显示,情绪耗竭(r=0.305, p=0.006)、人格解体(r=0.239, p=0.031)与工作绩效存在显著相关。同时,本研究未能建立个人成就感降低与工作绩效之间的关系。多元回归分析显示,情绪耗竭是影响工作绩效的主要因素(β=0.305, r2=0.093)。综上所述,护理职业存在工作倦怠特别是情绪耗竭的高风险,这将危及护士的工作绩效,最终导致护理质量的下降。
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引用次数: 10
Debt and firm value in Malaysia: A panel threshold regression analysis 马来西亚债务与企业价值:面板阈值回归分析
Pub Date : 2011-12-01 DOI: 10.1109/ISBEIA.2011.6088791
A. H. Ahmad, N. Abdullah
There have been number of studies discussing the optimal level of capital structure since the seminal work of Modigliani and Miller (1958). In this study, we examine whether an optimal level of debt exist at which a firm could maximize its value. An advanced panel threshold regression model by Hansen (1999) is employed to test the effect of debt ratio on the firm value among Malaysian listed firms from 2005 to 2009. The findings from this study show that additional debt beyond the threshold level does not add to a firm value.
自Modigliani和Miller(1958)的开创性工作以来,已经有许多研究讨论了资本结构的最佳水平。在本研究中,我们考察了是否存在使企业价值最大化的最优债务水平。本文采用Hansen(1999)的先进面板阈值回归模型检验了2005 - 2009年马来西亚上市公司负债率对公司价值的影响。本研究的结果表明,超出阈值水平的额外债务不会增加公司价值。
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引用次数: 3
Frictional behaviour of segmental retaining wall units infilled with recycled concrete aggregate 用再生混凝土骨料填充的节段挡土墙单元的摩擦性能
Pub Date : 2011-12-01 DOI: 10.1109/ISBEIA.2011.6088800
M. Z. I. Bhuiyan, F. Ali, F. A. Salman
The use of segmental retaining wall units as the facing column for mechanically stabilized earth (MSE) retaining walls has increased noticeably all over the world. Hollow and solid, both types of modular block units are used in dry-stacked facing columns. Nowadays, Hollow concrete units are being implicated frequently because of its cost-effectiveness and other technical advantages. The cavities of hollow concrete units are filled with natural (fresh) aggregates for better shear resistance. The use of fresh aggregates as in-fillers in retaining wall constructions is expensive and unsustainable (annihilation of natural resources). This study mainly focuses on frictional behavior of newly designed and manufactured precast “I” blocks infilled with fresh and recycled aggregates. A series of tests were performed using a specially designed & fabricated direct shear apparatus to assess the frictional behavior of infilled blocks under different normal loading conditions. The tests were executed based on the exiting ASTM and National Concrete Masonry Association (NCMA) test protocols. Test results were outlined in the form of shear stress-displacement relationship to compare the effect of recycled aggregate against the fresh aggregate. Shear capacity envelopes were also plotted using Mohr-Coulomb failure criteria to find out the angle of friction for each case. Test results revealed that the angle of friction of the blocks infilled with the recycled aggregate is almost equal to those with the fresh aggregate.
在世界范围内,采用分段式挡土墙单元作为机械稳定土(MSE)挡土墙的面对柱已明显增加。中空和实心,两种类型的模块化块单元都用于干堆叠面柱。目前,空心混凝土单元由于其经济效益和其他技术优势而经常被提及。空心混凝土单元的空腔由天然(新鲜)骨料填充,具有更好的抗剪性。在挡土墙建筑中使用新鲜骨料作为填充物是昂贵和不可持续的(自然资源的毁灭)。本研究主要关注新设计和制造的预制“I”砌块填充新鲜和再生骨料的摩擦行为。采用专门设计和制造的直剪装置进行了一系列试验,以评估不同正常载荷条件下填充块体的摩擦行为。测试是根据现有的ASTM和国家混凝土砌体协会(NCMA)测试协议执行的。试验结果以剪切应力-位移关系的形式概述,以比较再生骨料与新骨料的效果。利用Mohr-Coulomb破坏准则绘制了剪切能力包络图,以确定每种情况下的摩擦角。试验结果表明,充填再生骨料砌块的摩擦角与充填新鲜骨料砌块的摩擦角基本相等。
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引用次数: 2
Fundamental elements of sustainable private financing initiative contracts 可持续私人融资倡议合同的基本要素
Pub Date : 2011-12-01 DOI: 10.1109/ISBEIA.2011.6088832
M. Ros, Z. Ismail, F. Hassan, M. C. Mat
According to Confederation of British Industry, better positions in benefiting from Private Financing Initiative (PFI) projects is focusing on long term priorities such as environmental sustainability, flexibility and transparency. Hence, more projects to be procured using PFI scheme contracts to aid financing aspects during shortage of funds and going ‘greener’. The research statement is whether the PPP/PFI contracts would deliver sustainable green PFI projects with existence of ambiguity of sustainable contracts and poor implementations of sustainable green elements for the case in Malaysia.
根据英国工业联合会的说法,从私人融资倡议(PFI)项目中受益的更好的位置是关注长期优先事项,如环境可持续性、灵活性和透明度。因此,在资金短缺和“更环保”的情况下,更多的项目将使用PFI计划合同来帮助融资方面。研究陈述是PPP/PFI合同是否会提供可持续的绿色PFI项目,在马来西亚的案例中存在可持续合同的模糊性和可持续绿色要素的执行不力。
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引用次数: 2
Inter-cell and intra-cell layout design in a cellular manufacturing system 单元制造系统的单元间和单元内布局设计
Pub Date : 2011-12-01 DOI: 10.1109/ISBEIA.2011.6088823
S. Ariafar, N. Ismail, S. Tang, M. Ariffin, Z. Firoozi
Facility layout design problems are a group of problems that involve the partitioning of a region into work centers or departments to minimize the costs associated with interactions between the work centers and departments. In cellular manufacturing systems, facility layout problem aims to find the most efficient arrangement of facilities within the machine cells and the layout of machine-cells within the workshop. In this paper, an algorithm for solving layout design has been proposed that arranges the machines within machine cells, and cells in the shop-floor in such a way that minimizes the total material handling cost. To validate the developed algorithm, the results obtained by the algorithm are compared to the results of an exhaustive search. Comparison of results shows the validity of the proposed algorithm.
设施布局设计问题是将一个区域划分为工作中心或部门,以使工作中心和部门之间的交互成本最小化的一组问题。在单元化制造系统中,设备布局问题的目的是寻找设备在机器单元内最有效的布置方式和车间内机器单元的布局方式。在本文中,提出了一种解决布局设计的算法,该算法将机器布置在机器单元内,并以最小化总物料搬运成本的方式布置在车间单元中。为了验证所开发的算法,将算法得到的结果与穷举搜索的结果进行了比较。仿真结果表明了该算法的有效性。
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引用次数: 6
期刊
2011 IEEE Symposium on Business, Engineering and Industrial Applications (ISBEIA)
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