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Analysis and Design of Web-Based Database Application for Culinary Community 基于Web的烹饪社区数据库应用分析与设计
Pub Date : 2017-03-31 DOI: 10.21512/COMTECH.V8I1.3779
C. Huda, Osel Dharmawan Awang, Raymond Raymond, Raynaldi Raynaldi
This research is based on the rapid development of the culinary and information technology. The difficulties in communicating with the culinary expert and on recipe documentation make a proper support for media very important. Therefore, a web-based database application for the public is important to help the culinary community in communication, searching and recipe management. The aim of the research was to design a web-based database application that could be used as social media for the culinary community. This research used literature review, user interviews, and questionnaires. Moreover, the database system development life cycle was used as a guide for designing a database especially for conceptual database design, logical database design, and physical design database. Web-based application design used eight golden rules for user interface design. The result of this research is the availability of a web-based database application that can fulfill the needs of users in the culinary field related to communication and recipe management.
这项研究是基于烹饪和信息技术的快速发展。与烹饪专家沟通和食谱文档方面的困难使得为媒体提供适当的支持非常重要。因此,一个面向公众的基于网络的数据库应用程序对于帮助烹饪社区进行沟通、搜索和食谱管理非常重要。这项研究的目的是设计一个基于网络的数据库应用程序,可以用作烹饪社区的社交媒体。这项研究采用了文献综述、用户访谈和问卷调查。此外,数据库系统开发生命周期被用作设计数据库的指南,特别是用于概念数据库设计、逻辑数据库设计和物理设计数据库。基于Web的应用程序设计使用了用户界面设计的八条黄金法则。这项研究的结果是提供了一个基于网络的数据库应用程序,该应用程序可以满足烹饪领域与通信和配方管理相关的用户需求。
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引用次数: 2
Complexitor: An Educational Tool for Learning Algorithm Time Complexity in Practical Manner Complexitor:一个实用的学习算法时间复杂度的教育工具
Pub Date : 2017-03-31 DOI: 10.21512/COMTECH.V8I1.3783
E. Elvina, Oscar Karnalim
Based on the informal survey, learning algorithm time complexity in a theoretical manner can be rather difficult to understand. Therefore, this research proposed Complexitor, an educational tool for learning algorithm time complexity in a practical manner. Students could learn how to determine algorithm time complexity through the actual execution of algorithm implementation. They were only required to provide algorithm implementation (i.e. source code written on a particularprogramming language) and test cases to learn time complexity. After input was given, Complexitor generated execution sequence based on test cases and determine its time complexity through Pearson correlation. An algorithm time complexity with the highest correlation value toward execution sequence was assigned as its result. Based on the evaluation, it can be concluded this mechanism is quite effective for determining time complexity as long as the distribution of given input set is balanced.
基于非正式调查,学习算法的时间复杂性在理论上可能相当难以理解。因此,本研究提出了Complexitor,一种以实用的方式学习算法时间复杂性的教育工具。学生可以学习如何通过算法实现的实际执行来确定算法的时间复杂性。他们只需要提供算法实现(即用特定编程语言编写的源代码)和测试用例来学习时间复杂性。输入后,Complexitor根据测试用例生成执行序列,并通过Pearson相关性确定其时间复杂度。将一个与执行序列相关值最高的算法时间复杂度作为其结果。基于评估,可以得出结论,只要给定输入集的分布是平衡的,该机制对于确定时间复杂性是非常有效的。
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引用次数: 15
Audio Visual Media Components in Educational Game for Elementary Students 小学教育游戏中的视听媒体成分
Pub Date : 2016-12-31 DOI: 10.21512/COMTECH.V7I4.2515
Meilani Hartono, A. Santoso, Crisantus Lebu Raya, B. Yulianto, S. Suwarno
The purpose of this research was to review and implement interactive audio visual media used in an educational game to improve elementary students’ interest in learning mathematics. The game was developed for desktop platform. The art of the game was set as 2D cartoon art with animation and audio in order to make students more interest. There were four mini games developed based on the researches on mathematics study. Development method used was Multimedia Development Life Cycle (MDLC) that consists of requirement, design, development, testing, and implementation phase. Data collection methods used are questionnaire, literature study, and interview. The conclusion is elementary students interest with educational game that has fun and active (moving) objects, with fast tempo of music, and carefree color like blue. This educational game is hoped to be an alternative teaching tool combined with conventional teaching method.
摘要本研究旨在探讨互动视听媒体在教育游戏中的应用,以提高小学生学习数学的兴趣。该游戏是为桌面平台开发的。游戏的美术设置为2D动画美术,结合动画和音频,使学生更感兴趣。基于对数学学习的研究,我们开发了四个小游戏。使用的开发方法是多媒体开发生命周期(MDLC),它由需求、设计、开发、测试和实现阶段组成。数据收集方法有问卷调查法、文献研究法和访谈法。结论是小学生对具有有趣和活跃(移动)的物体,快节奏的音乐和无忧无虑的蓝色的教育游戏感兴趣。希望这种教育游戏能成为一种与传统教学方法相结合的另类教学工具。
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引用次数: 2
The Occupancy Rate Modeling of Kendari Hotel Room using Mexican Hat Transformation and Partial Least Squares 基于墨西哥帽变换和偏最小二乘的Kendari酒店客房入住率建模
Pub Date : 2016-12-31 DOI: 10.21512/COMTECH.V7I4.3766
M. Ohyver, Herena Pudjihastuti
Partial Least Squares (PLS) method was developed in 1960 by Herman Wold. The method particularly suits with construct a regression model when the number of independent variables is many and highly collinear. The PLS can be combined with other methods, one of which is a Continuous Wavelet Transformation (CWT). By considering that the presence of outliers can lead to a less reliable model, and this kind of transformation may be required at a stage of pre-processing, the data is free of noise or outliers. Based on the previous study, Kendari hotel room occupancy rate was affected by the outlier, and it had a low value of R2. Therefore, this research aimed to obtain a good model by combining the PLS method and CWT transformation using the Mexican Hats them other wavelet of CWT. The research concludes that merging the PLS and the Mexican Hat transformation has resulted in a better model compared to the model that combined the PLS and the Haar wavelet transformation as shown in the previous study. The research shows that by changing the mother of the wavelet, the value of R2 can be improved significantly. The result provides information on how to increase the value of R2. The other advantage is the information for hotel managements to notice the age of the hotel, the maximum rates, the facilities, and the number of rooms to increase the number of visitors.
偏最小二乘法(PLS)是由赫尔曼·沃尔德于1960年提出的。该方法特别适用于自变量数量多且高度共线性的回归模型的构造。PLS可以与其他方法相结合,其中一种方法是连续小波变换(CWT)。考虑到异常值的存在会导致模型的可靠性降低,并且在预处理阶段可能需要进行这种转换,因此数据没有噪声或异常值。根据之前的研究,Kendari酒店客房入住率受到离群值的影响,R2值较低。因此,本研究的目的是将PLS方法与CWT变换相结合,利用CWT的墨西哥帽和其他小波,得到一个好的模型。研究得出结论,与前人研究中PLS与Haar小波变换相结合的模型相比,合并PLS与Mexican Hat变换得到了更好的模型。研究表明,通过改变小波母,可以显著提高R2的值。结果提供了关于如何增加R2值的信息。另一个好处是,这些信息可以让酒店管理人员注意到酒店的年龄,最高价格,设施和房间数量,以增加游客数量。
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引用次数: 0
Single Document Automatic Text Summarization using Term Frequency-Inverse Document Frequency (TF-IDF) 基于词频-逆文档频率(TF-IDF)的单文档自动文本摘要
Pub Date : 2016-12-31 DOI: 10.21512/COMTECH.V7I4.3746
Hans Christian, Mikhael Pramodana Agus, Derwin Suhartono
The increasing availability of online information has triggered an intensive research in the area of automatic text summarization within the Natural Language Processing (NLP). Text summarization reduces the text by removing the less useful information which helps the reader to find the required information quickly. There are many kinds of algorithms that can be used to summarize the text. One of them is TF-IDF (TermFrequency-Inverse Document Frequency). This research aimed to produce an automatic text summarizer implemented with TF-IDF algorithm and to compare it with other various online source of automatic text summarizer. To evaluate the summary produced from each summarizer, The F-Measure as the standard comparison value had been used. The result of this research produces 67% of accuracy with three data samples which are higher compared to the other online summarizers.
随着网络信息的日益丰富,在自然语言处理(NLP)领域中,文本自动摘要的研究已经引起了广泛的关注。文本摘要通过删除不太有用的信息来减少文本,从而帮助读者快速找到所需的信息。有很多种算法可以用来总结文本。其中之一是TF-IDF (TermFrequency-Inverse Document Frequency)。本研究旨在制作一个使用TF-IDF算法实现的自动文本摘要器,并将其与其他各种在线自动文本摘要器进行比较。为了评估每个总结器产生的总结,使用了F-Measure作为标准比较值。这项研究的结果产生了67%的准确度与三个数据样本相比,其他在线总结器更高。
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引用次数: 159
Bragg Resonance around the Coast of Hardwall 哈德沃尔海岸附近的布拉格共振
Pub Date : 2016-12-31 DOI: 10.21512/COMTECH.V7I4.2547
Viska Noviantri, R. N. Rachmawati
Basically, when waves pass an uneven basis, then this wave will be split into transmission and reflection waves. First of all, it will be shown that a sinusoidal seabed can lead to the phenomenon of Bragg resonance. Bragg resonance occurs when the wave-length comes at twice the wave-length of a sinusoidal basis. The method used to obtain approximation solution is a multi-scale asymptotic expansion method. A research on the effect of Bragg resonance on sinusoidal basis had been studied. Sinusoidal basis can reduce the amplitude of the incoming wave so that the amplitude of the wave transmission is quite small. In these researcher, the coast is assumed ideal and can absorb all the energy of the wave transmission. If the beach can reflect waves, this indicates that the existence of sinusoidal basis is more harmful to the coast. This mechanism relies on the distance between the base sinusoidal and beaches. The present research will examined the influence of the base, when there was a beach of hard-wall on the right, which was perfectly capable of reflecting waves. Having regard to the phase difference, from super positioned waves when they hit the beach, so it can determine the safert and the most dangerous distance.
基本上,当波通过一个不均匀的基时,这个波就会被分成透射波和反射波。首先,将证明正弦海底会导致布拉格共振现象。当波长达到正弦基波长的两倍时,就会发生布拉格共振。采用多尺度渐近展开法求近似解。研究了Bragg共振对正弦基的影响。正弦基可以减小入射波的振幅,使透射波的振幅相当小。在这些研究中,假设海岸是理想的,可以吸收波浪传播的所有能量。如果海滩能反射波浪,这说明正弦基的存在对海岸的危害更大。这种机制依赖于基础正弦和海滩之间的距离。目前的研究将检验基地的影响,当有一个海滩的硬墙在右边,这是完全能够反射波。考虑到相位差,从超定位的波浪到达海滩时,可以确定安全距离和最危险距离。
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引用次数: 0
Perception Analysis of Desktop and Mobile Service Website 桌面和移动服务网站的感知分析
Pub Date : 2016-12-31 DOI: 10.21512/comtech.v7i4.3753
Rizqiyatul Khoiriyah
The research was conducted as a qualitative study of the website to deeper explore and examine the analysis of user perception of desktop and mobile website services. This research reviewed about user perception of desktop and mobile service website used by using qualitative methods adapted to WebQual and User Experience approach. This qualitative research refered to the theoretical reference written by Creswell (2014). The expected outcome is to know the user perceptions of the available services and information in the website along with the possibility of desktop and mobile gap arising from differences in the two services. These results can be used as a service model on the website of the user experience.
本研究是对网站进行定性研究,以更深入地探索和检验用户对桌面和移动网站服务的感知分析。本研究采用webqualal和user Experience的定性方法,对桌面和移动服务网站的用户感知进行了综述。本定性研究参考了Creswell(2014)的理论参考文献。期望的结果是了解用户对网站中可用的服务和信息的感知,以及两种服务的差异所产生的桌面和移动端差距的可能性。这些结果可以作为网站上用户体验的服务模型。
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引用次数: 0
The Impact of the Implementation of Business Intelligent to Support Decision-Making in the American Banking Industry: a Literature Review 实施商业智能对美国银行业决策支持的影响:文献综述
Pub Date : 2016-12-31 DOI: 10.21512/COMTECH.V7I4.2530
A. M. Sundjaja, Veronica Veronica
In facing globalization era, companies need to have innovation to survive in business competition. A change is needed to make a successful inovation, when a company needs a leader who has a strong managerial ability. The application of technology, in this case is business intelligence (BI), is an innovation that can becarried out by the management leader to survive in the complex world competition by finding appropriate decisions to solve business problems. This article was a literature review that concerned to exploration of the role of leadership and managerial ability in the application of BI on First American Company (FAC). The authors retrieved articles from google scholar with keywords, such as: leadership, managerial ability, and business. The implementation of BI on FAC proves to be a successful innovation formulated by the managementwho manage to change the company's financial situation that loss into a profit and managed to become the market leaders. In addition, this article also presented some cases of successful BI implementation which helped resolving credit problems and segmentation
面对全球化时代,企业需要创新才能在商业竞争中生存。一个成功的创新需要一个变革,当一个公司需要一个有很强的管理能力的领导者。技术的应用,在这种情况下是商业智能(BI),是一种创新,可以由管理领导者通过找到适当的决策来解决业务问题,从而在复杂的世界竞争中生存。本文是一篇文献综述,旨在探讨领导力和管理能力在商业智能在第一美国公司(FAC)的应用中所起的作用。作者检索了谷歌scholar上的文章,关键词包括:领导力、管理能力和商业。在FAC上实施BI被证明是管理层制定的成功创新,他们成功地将公司的财务状况从亏损转为盈利,并成为市场领导者。此外,本文还介绍了一些成功的BI实施案例,这些案例帮助解决了信用问题和细分问题
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引用次数: 0
Winsorized Modified One Step M-Estimator As a Measure of the Central Tendency in the Alexander-Govern Test 在Alexander-Govern检验中,Winsorized改进的一步m估计量作为集中趋势的度量
Pub Date : 2016-09-30 DOI: 10.21512/COMTECH.V7I3.2505
Tobi Kingsley Ochuko, Suhaida Abdullah, Zakiyah Zain, S. S. S. Yahaya
This research dealt with making comparison of the independent group tests with the use of parametric technique. This test used mean as its central tendency measure. It was a better alternative to the ANOVA, the Welch test and the James test, because it gave a good control of Type I error rates and high power with ease in its calculation, for variance heterogeneity under a normal data. But the test was found not to be robust to non-normal data. Trimmed mean was used on the test as its central tendency measure under non-normality for two group condition, but as the number of groups increased above two, the test failed to give a good control of Type I error rates. As a result of this, the MOM estimator was applied on the test as its central tendency measure and is not influenced by the number of groups. However, under extreme condition of skewness and kurtosis, the MOM estimator could no longer control the Type I error rates. In this study, the Winsorized MOM estimator was used in the AG test, as a measure of its central tendency under non-normality. 5,000 data sets were simulated and analysed for each of the test in the research design with the use of Statistical Analysis Software (SAS) package. The results of the analysis shows that the Winsorized modified one step M-estimator in the Alexander-Govern (AGWMOM) test, gave the best control of Type I error rates under non-normality compared to the AG test, the AGMOM test, and the ANOVA, with the highest number of conditions for both lenient and stringent criteria of robustness.
本研究采用参数化技术对独立组检验进行比较。该检验使用均值作为集中趋势度量。它是ANOVA, Welch检验和James检验的更好替代,因为它很好地控制了I型错误率,并且易于计算,对于正常数据下的方差异质性。但发现该测试对非正态数据不可靠。在两组非正态性条件下,检验使用了修剪均值作为其集中趋势度量,但随着组数增加到两组以上,检验无法很好地控制I型错误率。因此,在测试中应用MOM估计量作为其集中趋势度量,并且不受组数的影响。然而,在偏度和峰度的极端条件下,MOM估计器不能再控制I型错误率。在本研究中,在AG检验中使用了Winsorized MOM估计器,作为其在非正态性下的集中趋势的度量。在研究设计中,使用统计分析软件(SAS)软件包对每个测试进行了5000个数据集的模拟和分析。分析结果表明,与AG检验、AGWMOM检验和ANOVA检验相比,Alexander-Govern (AGWMOM)检验中的Winsorized改进的一步m估计器在非正态性下对I型错误率的控制效果最好,具有最多的条件来满足宽松和严格的稳健性标准。
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引用次数: 0
Risk Management in Information Technology Project: An Empirical Study 信息技术项目风险管理:实证研究
Pub Date : 2016-09-30 DOI: 10.21512/COMTECH.V7I3.2498
Kornelius Irfandhi S.Kom
The companies are facing some risks due to changes in a dynamic environment. If risks are not managed properly, it will have some negative impacts on the companies at the present and the future. One important function of the Information Technology (IT) governance is risk management. Risk management in IT project aims to provide a safe environment for IT projects undertaken. Risk management becomes an important process for the success of IT projects. This article discussed the risk of IT project and whether there was a relationship between risk management and the success of the project. The method used was performing a literature review of several scientific articles which published between 2010 and 2014. The results of this study are the presence of risk management and risk manager influence the success of the project. Risk analysis and risk monitoring and control also have a relationship with the subjective performance of IT projects. If risk management is applied properly, the chance of the success of the projects undertaken can be increased.
由于动态环境的变化,这些公司面临着一些风险。如果风险管理不当,将会对公司现在和未来产生一些负面影响。信息技术(IT)治理的一个重要功能是风险管理。资讯科技项目风险管理的目的,是为进行的资讯科技项目提供一个安全的环境。风险管理成为IT项目成功的一个重要过程。本文讨论了IT项目的风险,以及风险管理与项目成功之间是否存在关系。使用的方法是对2010年至2014年间发表的几篇科学文章进行文献综述。本研究的结果是风险管理的存在和风险管理对项目成功的影响。风险分析和风险监控也与IT项目的主观绩效有关。如果风险管理应用得当,项目成功的机会就会增加。
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引用次数: 5
期刊
ComTech
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