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2017 IEEE 8th International Conference on Awareness Science and Technology (iCAST)最新文献

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The minimizing prediction error on corporate financial distress forecasting model: An application of dynamic distress threshold value 企业财务困境预测模型预测误差最小化:动态困境阈值的应用
Pub Date : 2017-11-01 DOI: 10.1109/ICAWST.2017.8256511
K. Chiou, Ming-min Lo, Guo-Wei Wu
In this study, we have adopted factors such as intellectual capital, financial ratios and corporate governance variables to construct a financial distress forecasting model by logistic regression. Furthermore, we employ the criteria of minimizing the sum of the two error probability in models I and II to determine the optimal threshold value, so as to increase the forecasting ability of a financial crisis forecasting model. We have taken 54 electronics companies listed in Taiwan Stock Exchange (TSE) and Over the Counter (OTC) during the periods from 2012 to 2015 to be our observation. 18 companies out of the 54 has been financially distressed in 2015. The results show that we could effectively construct a lower threshold value on the basis of the dynamic threshold value to carry out early warning (such as p = 0.32 ∼ 0.43 < p = 0.5) than those in terms of the traditional one half rule. The total error prediction probability could be reduced by 8.33% to 30.56%. In addition, the empirical evidence shows that after adding the intellectual capital variables, it could enhance the forecasting power.
在本研究中,我们采用智力资本、财务比率和公司治理变量等因素,通过logistic回归构建财务困境预测模型。进一步,我们采用模型I和模型II中两个误差概率之和最小的准则来确定最优阈值,从而提高金融危机预测模型的预测能力。我们以2012年至2015年期间在台湾证券交易所(TSE)和场外交易(OTC)上市的54家电子公司为研究对象。在这54家公司中,有18家在2015年陷入财务困境。结果表明,与传统的二分规则相比,我们可以在动态阈值的基础上有效地构建更低的阈值来进行预警(如p = 0.32 ~ 0.43 < p = 0.5)。总误差预测概率可降低8.33% ~ 30.56%。此外,实证表明,加入智力资本变量后,可以增强预测能力。
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引用次数: 2
Fixed broadband customer area mapping using spatial analysis 使用空间分析的固定宽带客户区域映射
Pub Date : 2017-11-01 DOI: 10.1109/ICAWST.2017.8256427
I. Surjandari, Asma Rosyidah
Implementation of marketing strategy plays an important role in increasing the number of sales and market penetration, especially in competitive market. In geo-marketing approach, spatial analysis of customer distribution patterns is used as a parameter to determine a comprehensive marketing strategy. Hence, this study was conducted to find the spatial patterns of fixed broadband customer distribution from geographic information system based customer data. This research was conducted using spatial analysis method, which is kernel density estimation. The results obtained from this study provide an overview of customer area mapping in the form of heatmap.
营销策略的实施对提高销售量和市场渗透率起着重要的作用,尤其是在竞争激烈的市场中。在地理营销方法中,客户分布模式的空间分析被用作确定综合营销策略的参数。因此,本研究基于地理信息系统的用户数据,寻找固定宽带用户分布的空间格局。本研究采用核密度估计的空间分析方法进行。本研究的结果以热图的形式提供了客户区域映射的概述。
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引用次数: 2
A multi-layer system for smart-buildings' functional and energy-efficiency awareness: Implementation on a real five-floors building 智能建筑功能和节能意识的多层系统:在真实五层建筑上的实施
Pub Date : 2017-11-01 DOI: 10.1109/ICAWST.2017.8256529
Roozbeh Sadeghian Broujeny, K. Madani, A. Chebira, Laurent Hurtard
The challenging problem of energy consumption of building, and in a more general way of cities, and its enormous growth due to recent decades' human activities leaded to an appealing development of fields focusing smart buildings and smart cities regarding energy efficiency. Ability to avoid of wasting energy is appealing now and thus researchers are looking for new energy consumption trend and new way for building energy management system. However, such smart edifices or cities have to integrate the ability of their own awareness as well about the environment in which they evolve as about the impact of their users on their energy efficiency. Within this context, in this paper we introduce a multi-layer system able as well to monitor as to control energy consumption and state of a building, proffering the buildings a kind of self-awareness about its energetic state. The investigated system has been implemented in a five-floors building of Senart Campus of UPEC (one of main campuses of this Parisian university) providing an appealing experimental platform for validation of the investigated concept. The present paper describes the aforementioned system and gives first results of validation of the investigated system.
建筑能耗这一具有挑战性的问题,以及更普遍的城市能耗问题,以及近几十年来人类活动带来的巨大增长,导致了智能建筑和智能城市领域在能源效率方面的诱人发展。避免能源浪费的能力是当前建筑节能管理的重要课题,研究人员正在寻找建筑节能的新趋势和新途径。然而,这样的智能建筑或城市必须整合自身的意识能力,以及它们所处的环境,以及它们的用户对其能源效率的影响。在此背景下,本文介绍了一种能够监测和控制建筑物能耗和状态的多层系统,为建筑物提供一种对其能量状态的自我意识。所研究的系统已在UPEC Senart校区(这所巴黎大学的主校区之一)的五层建筑中实施,为所研究的概念的验证提供了一个有吸引力的实验平台。本文描述了上述系统,并给出了所研究系统的初步验证结果。
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引用次数: 3
Survey of EEG-based biometric authentication 基于脑电图的生物特征认证研究综述
Pub Date : 2017-11-01 DOI: 10.1109/ICAWST.2017.8256471
Isuru Jayarathne, Michael Cohen, Senaka Amarakeerthi
User authentication systems based on EEG (electroencephalography) is currently popular, marking an inflection point in the field. Recently, the scientific community has been making tremendous attempts towards perceiving uniqueness of brain signal patterns. Several types of methodical approaches have been proposed and prototyped to analyze EEG data with various signal-processing methods and pattern-recognition algorithms. Even though there are many stimulation methods to produce reasonable distinctiveness between subjects, optimization and lowering task complexity are still desirable from technoeconomic points of view. With recent technological advancement of EEG signal capturing devices, the process is getting comparatively simpler as devices are capable of providing better portability with reduced calibration time. However, most detailed analysis suggests that a minimal number of most appropriate channels should be selected for better results, even if a system is equipped with the most advanced hardware. Researchers are now focusing on implementing computationally low cost systems with better accuracy, regardless of complexity of the tasks. This paper is a review of several approaches, providing an overview of crucial design considerations in handling EEG data for extended accuracy and practical applicability to authentication.
基于脑电图(EEG)的用户认证系统目前很流行,标志着该领域的一个转折点。最近,科学界一直在进行巨大的尝试,以感知大脑信号模式的独特性。利用各种信号处理方法和模式识别算法,已经提出并实现了几种方法方法来分析脑电数据。尽管有许多刺激方法可以产生受试者之间的合理差异,但从技术经济学的角度来看,优化和降低任务复杂性仍然是可取的。随着近年来脑电信号捕获设备的技术进步,该过程变得相对简单,因为设备能够提供更好的便携性和减少校准时间。然而,最详细的分析表明,即使系统配备了最先进的硬件,也应该选择最少数量的最合适的通道以获得更好的结果。研究人员现在正专注于实现计算成本低、精度高的系统,而不考虑任务的复杂性。本文回顾了几种方法,概述了处理脑电图数据的关键设计考虑因素,以提高准确性和实际应用于身份验证。
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引用次数: 28
The influence of experience satisfaction and sports attitude on somatosensory experience of information technology products: A case study of Wii sports 体验满意度和运动态度对信息技术产品体感体验的影响:以Wii运动为例
Pub Date : 2017-11-01 DOI: 10.1109/ICAWST.2017.8256523
Chih-Wei Lin, W. Tan, Su-Shiang Lee, Shin-I Tseng, Yu-Sheng Lin, W. Hsu
This study aims to investigate the relationship between the experience satisfaction and sports attitude for the adolescent with the somatosensory experience of information technology products. Subject to the adolescents ranging from 13 to 15-year olds, this study issues a total of 445 surveys by using cluster sampling. As a result, 415 valid samples are received and the effective response rate is 93.2%. For the collected data, it is at first analyzed for the reliability and the validity, and then descriptive statistics and multiple regression analysis are applied. The main results induced from this study are as below. (1) The experience of Wii Sports can benefit the “Sensory Emotion” of the somatosensory experience. (2) The “Relaxation” of the experience satisfaction is the most impressive; the “Affection” of the exercise attitude is the highest. (3) The “Thinking Action”, “Sensory Emotion” and “Relevance” of somatosensory experiences in Wii Sports can effectively predict the experience satisfaction and sports attitude. (4) The sports attitudes can be effectively predicted by the “Relaxation”, “Physiological” and “Psychological” of the somatosensory experience in Wii Sports. Based on the above results, this study provides some practical suggestions for educational and related units as a reference to achieve an improvement in sports education.
本研究旨在探讨青少年体验满意度与运动态度与资讯科技产品体感体验的关系。本研究以13 ~ 15岁的青少年为研究对象,采用整群抽样的方法共发放问卷445份。共收到有效样本415份,有效回复率为93.2%。对收集到的数据首先进行信度和效度分析,然后运用描述性统计和多元回归分析。本研究得出的主要结果如下:(1) Wii Sports的体验有利于体感体验的“感官情感”。(2)体验满意度的“放松”最令人印象深刻;运动态度的“情感”程度最高。(3)《Wii Sports》体感体验的“思维行动”、“感觉情感”和“关联”能有效预测体验满意度和运动态度。(4)《Wii sports》体感体验的“放松”、“生理”、“心理”三个维度能够有效预测运动态度。基于上述研究结果,本研究为教育及相关单位提供了一些切实可行的建议,以供参考,以实现体育教育的改进。
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引用次数: 2
An image hiding scheme based on magic square 一种基于幻方的图像隐藏方案
Pub Date : 2017-11-01 DOI: 10.1109/ICAWST.2017.8256467
Chin-Feng Lee, Ying-Xiang Wang
Image data hiding technology is a secret communication which carries hidden data in such a way that no one apart from the sender and intended recipient can even realize there is a hidden message. High embedding capacity, good images quality and security are three important essentials. In this paper, each confidential hexadecimal will be carried by two cover pixels based on a magic matrix generated from a square template to reach the goal of higher embedding capacity while keeping good image visualization. Experimental results reveal that the proposed scheme guarantees higher embedding capacity of 2 bits per pixel and has the PSNR of 44.7 dB on average. Moreover, secret keys are used to ensure security consideration.
图像数据隐藏技术是一种秘密通信,它以一种除了发送者和预期接收者之外没有人能意识到隐藏信息的方式携带隐藏数据。高嵌入容量、良好的图像质量和安全性是三个重要的要素。在本文中,每个机密十六进制由正方形模板生成的幻矩阵由两个覆盖像素承载,以达到在保持良好图像可视化的同时提高嵌入容量的目的。实验结果表明,该方案保证了较高的嵌入容量(2比特/像素),平均PSNR为44.7 dB。此外,还使用密钥来确保安全性。
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引用次数: 1
The implementation of multi-path delivery for data flows using Raspberry Pi boards in software-defined networks 在软件定义网络中使用树莓派板实现数据流的多路径传输
Pub Date : 2017-11-01 DOI: 10.1109/ICAWST.2017.8256472
Chuan-Bi Lin, T. Hu, Hsiang-Yu Chan
In the Internet, Software-Defined Network (SDN) is an attractive issue because it allows network managers to use software program to control and manage the networks instead of the setup of hardware equipment. Therefore, in this study, we established an experiment platform by Raspberry Pi boards and proposed a method, Weight-Based Flow Dividing (WFD) method, to implement the OpenFlow switching in the SDN. The proposed method uses the multipath to transmit the packets by weighted configurations because the single-path transmission causes the routing security at high risk and is difficult to effectively use the path bandwidth. In addition, we use network simulation software Mininet on this study for comparison purposes. The simulations show the results can achieve the multipath transmissions through the hardware OpenFlow switch platform with WFD in different weighted configurations, as Mininet.
在Internet中,软件定义网络(SDN)是一个有吸引力的问题,因为它允许网络管理人员使用软件程序来控制和管理网络,而不是设置硬件设备。因此,在本研究中,我们利用树莓派板搭建了一个实验平台,并提出了一种基于权重的流量划分(Weight-Based Flow divide, WFD)方法来实现SDN中的OpenFlow交换。由于单路径传输存在路由安全风险,且难以有效利用路径带宽,因此采用多路径加权配置传输报文。此外,为了进行比较,我们使用了网络仿真软件Mininet。仿真结果表明,采用不同加权配置的WFD(如Mininet),通过硬件OpenFlow交换平台可以实现多径传输。
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引用次数: 4
A hybrid approach for optimal feature subset selection with evolutionary algorithms 最优特征子集选择与进化算法的混合方法
Pub Date : 2017-11-01 DOI: 10.1109/ICAWST.2017.8256521
Atsushi Kawamura, B. Chakraborty
Feature subset selection is very important as a preprocessing step for pattern recognition and data mining problems. The selected feature subset is expected to produce maximum possible classification accuracy with a minimum possible number of features. For optimal feature selection, a suitable evaluation function and an efficient search method are needed. There are two main approaches. In filter approach, the inherent characteristics of the data set is used for feature evaluation while in wrapper approach, the classification accuracy is used as the evaluation function. Both the approaches have relative merits and demerits. In this paper a suitable combination of both filter and wrapper approch is proposed for selection of optimal feature subset with evolutionary algorithm. Correlation based feature selection (CFS) and minimum redundancy and maximum relevance (mRMR) algorithms are used as filter evaluation approach, binary genetic algorithm (BGA) and binary particle swarm optimization (BPSO) are used as evolutionary serach algorithms. The simulation experiments are done with benchmark data sets. The simulation results show that proper hybridization approach is effective in achieving optimal feature subset selection with minimum number of features having high classification accuracy and low computational cost.
特征子集选择作为模式识别和数据挖掘问题的预处理步骤是非常重要的。所选的特征子集期望以尽可能少的特征产生尽可能高的分类精度。为了进行最优特征选择,需要合适的评价函数和高效的搜索方法。主要有两种方法。在滤波方法中,使用数据集的固有特征进行特征评价;在包装方法中,使用分类精度作为评价函数。这两种方法各有优缺点。针对进化算法中最优特征子集的选择问题,提出了一种滤波与包装相结合的方法。采用基于关联的特征选择(CFS)和最小冗余和最大相关性(mRMR)算法作为滤波评价方法,采用二值遗传算法(BGA)和二值粒子群优化(BPSO)作为进化搜索算法。利用基准数据集进行了仿真实验。仿真结果表明,适当的杂交方法可以有效地以最少的特征数量实现最优的特征子集选择,具有较高的分类精度和较低的计算成本。
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引用次数: 14
Neural network based system for detecting and diagnosing faults in steam turbine of thermal power plant 基于神经网络的火电厂汽轮机故障检测与诊断系统
Pub Date : 2017-11-01 DOI: 10.1109/ICAWST.2017.8256435
Arian Dhini, B. Kusumoputro, I. Surjandari
Steam turbine is the main system of a steam power plant and critical for power generation. Therefore, there is urgency for maintaining the reliability and availability of a steam turbine. A fast and accurate fault detection and diagnosis (FDD) system should be developed as an integral part to prevent a system from catastrophic disaster due to unhandled failures. Many previous studies applied model-based methods to build the FDD system. However, using those approaches required prior knowledge of the system. The power plant is a complex system, where comprehensive process knowledge is a real challenge. On the other hand, power plants have implemented condition monitoring which resulted in process monitoring data. Therefore, this study proposed a data-driven FDD system in a steam turbine of thermal power plant. The study used the process monitoring data from an Indonesian government owned steam power plant. A neural network based classifier was constructed to detect and diagnose faults as well as normal operating condition based on three scenarios. The result showed that the last two scenarios, with and without PCA approach, outperformed the first scenario which only used selected process parameters. The study demonstrated the superiority of data driven approach in the fault detection and diagnosis area.
汽轮机是蒸汽发电厂的主要系统,对发电至关重要。因此,保持汽轮机的可靠性和可用性是当务之急。快速准确的故障检测与诊断(FDD)系统是防止系统因未处理的故障而造成灾难性灾难的重要组成部分。以往的许多研究都采用基于模型的方法来构建FDD系统。然而,使用这些方法需要系统的先验知识。电厂是一个复杂的系统,全面的工艺知识是一个真正的挑战。另一方面,电厂实施了状态监测,产生了过程监测数据。因此,本研究提出了一种数据驱动的火电厂汽轮机FDD系统。该研究使用了印度尼西亚政府拥有的蒸汽发电厂的过程监测数据。基于三种场景,构建了基于神经网络的分类器,对故障和正常运行状态进行检测和诊断。结果表明,最后两个场景,使用和不使用PCA方法,优于仅使用选定工艺参数的第一个场景。研究证明了数据驱动方法在故障检测与诊断领域的优越性。
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引用次数: 14
Analysis of information registration behavior to safety confirmation system for university 高校安全确认系统信息登记行为分析
Pub Date : 2017-11-01 DOI: 10.1109/ICAWST.2017.8256466
Hiroaki Yuze, S. Nabeta, M. Sagara
Since 1999, University of Shizuoka has been developing and operating an Internet-based safety confirmation system for students and university staffs. In the instance of Kumamoto Earthquake in 2016, University of Shizuoka provided Prefectural University of Kumamoto with the safety confirmation system. In this study, we used safety data collected through the safety confirmation system at University of Shizuoka during the Great East Japan Earthquake in 2011 and at Prefectural University of Kumamoto during the Kumamoto Earthquake in 2016 to comparatively analyze the users' safety information registration behaviors.
自1999年以来,静冈大学一直在为学生和大学工作人员开发和运营一个基于互联网的安全确认系统。在2016年熊本地震中,静冈县大学向熊本县立大学提供了安全确认系统。在本研究中,我们使用2011年东日本大地震期间静冈大学和2016年熊本地震期间熊本县立大学安全确认系统收集的安全数据,对比分析用户的安全信息注册行为。
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引用次数: 0
期刊
2017 IEEE 8th International Conference on Awareness Science and Technology (iCAST)
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