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Commercial Cloud Services for a Robust Mobile Application Backend Data Storage 商业云服务用于健壮的移动应用后端数据存储
Pub Date : 2021-04-01 DOI: 10.35806/IJOCED.V3I1.139
F. Dahunsi, John Idogun, A. Olawumi
Rapid advancements in the infrastructure of Information and Communication Technology (ICT) have led to radically new but ubiquitous technology; cloud computing. Cloud computing has gracefully emerged offering services that possess on-demand scalability, huge computing power, and a utility-like availability, all at a relatively low cost. It has unsurprisingly become a paradigm shift in ICT, gaining adoptions in all forms of application i.e., personal, academic, business, or government. Not only for its cost-effectiveness but also for its inherent ability to meet business goals and provide strategic ICT resources. More recently there have been advances in cloud computing leading to the evolution of newer commercial cloud services, one of which is the Mobile backend as a Service (MBaaS). The MBaaS is important and required for a robust mobile application back-end data storage and management. Its wide adoption and importance stem from its ability to simplify application development and deployment. Also, MBaaS is robust, with the ability to cope with errors by providing nifty tools and other features. These enable rapid scaffolding of mobile applications. This paper reviews Mobile backend as a Service (MBaaS) and provides required background knowledge on some cloud services and their providers to enable stakeholders to make informed decisions and appropriate choices.
信息和通信技术(ICT)基础设施的快速发展导致了全新但无处不在的技术;云计算。云计算优雅地出现了,它提供的服务具有按需可伸缩性、巨大的计算能力和类似实用程序的可用性,而且成本相对较低。不出所料,它已成为信息通信技术的典范转变,在各种形式的应用中获得采用,即个人、学术、商业或政府。不仅因为其成本效益,而且因为其实现业务目标和提供战略性ICT资源的内在能力。最近,云计算的进步导致了新的商业云服务的发展,其中之一就是移动后端即服务(MBaaS)。MBaaS对于健壮的移动应用程序后端数据存储和管理非常重要。它的广泛采用和重要性源于它简化应用程序开发和部署的能力。此外,MBaaS是健壮的,能够通过提供漂亮的工具和其他特性来处理错误。这使得移动应用程序的快速搭建成为可能。本文回顾了移动后端即服务(MBaaS),并提供了一些云服务及其提供商所需的背景知识,以使利益相关者能够做出明智的决策和适当的选择。
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引用次数: 5
Redesigning Public Street Lighting Using Photometric Method 用光度法重新设计公共街道照明
Pub Date : 2021-04-01 DOI: 10.35806/IJOCED.V3I1.153
A. Abdullah, Muhammad Aziz, M. Huda
Street lighting with LED (Light-Emitting Diode) technology is currently the main option of public lighting in almost every country. Even though LED technology is a less costly selection, there needs to be well planned in an attempt of acquiring high efficiency. The photometric approach was tested in this study in order to redesign the existing approach used in street lighting in Indonesia. The redesigning process was carried out using software namely DIALux on two different schemes; one with homogeneous luminaire and the other one with the non-homogeneous luminaire. The results of this study showed that the most significant factors in redesigning street lighting covered types of the lamp, pole distance, pole height, and proper lighting angles which could affect the illumination value on both the main road and the sidewalks. In addition, it has also been proven that a homogeneous approach using LED lamp lighting promoted uniformity as well as optimum illumination.
采用LED(发光二极管)技术的街道照明目前几乎是每个国家公共照明的主要选择。尽管LED技术是一种成本较低的选择,但为了获得高效率,需要精心规划。为了重新设计印度尼西亚街道照明中使用的现有方法,本研究对光度法进行了测试。利用DIALux软件对两种方案进行了重新设计;一个采用均匀灯具,另一个采用非均匀灯具。研究结果表明,路灯类型、灯杆距离、灯杆高度和合适的照明角度是影响街道照明设计的最重要因素,这些因素对主干道和人行道的照明价值都有影响。此外,还证明了使用LED灯照明的均匀方法促进了均匀性和最佳照明。
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引用次数: 1
Development and Accuracy Test of a Fused Deposition Modeling (FDM) 3D Printing using H-Bot Mechanism 基于H-Bot机制的熔融沉积建模(FDM) 3D打印的开发与精度测试
Pub Date : 2021-03-17 DOI: 10.35806/IJOCED.V3I1.148
B. Hadisujoto, Robby Wijaya
Additive manufacturing process known as the 3D printing process is an advanced manufacturing process including one of the components to support industrial revolution 4.0. The initial development of a 3D printing machine at Sampoerna University is the background of this research. The 3D printing setup of Fused Deposition Modeling (FDM) was built using H-bot moving mechanism by considering the rigidity aspect. The FDM printing method is selected due to its cost and reliability. In this early development, the brackets were custom made using a 3D printer with Polylactic Acid (PLA) material. The result showed that the software worked properly in accordance with the assembled mechanical and electrical parts. The 3D printer could print simple objects such as planes and cubes with small dimensions. However, the printing specimen still lacked accuracy caused by the less rigidity of linear rail brackets, less coplanar belt arrangement, and error in some electronic components.
增材制造工艺被称为3D打印工艺,是一种先进的制造工艺,包括支持工业革命4.0的组件之一。Sampoerna大学的3D打印机的初步开发是这项研究的背景。从刚性角度出发,利用H-bot移动机构建立了熔融沉积模型(FDM)的3D打印装置。选择FDM打印方法是由于其成本和可靠性。在这个早期的开发中,支架是使用聚乳酸(PLA)材料的3D打印机定制的。结果表明,该软件与所装配的机电部件工作正常。3D打印机可以打印小尺寸的平面和立方体等简单物体。但由于线性导轨支架刚性较差、共面皮带布置较少、部分电子元件存在误差等原因,打印样品的精度仍然存在一定的不足。
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引用次数: 7
Effects of Adding Silica Fume and Empty Fruit Bunch to the Mix of Cement Brick 在水泥砖混合料中添加硅灰和空果包的效果
Pub Date : 2021-03-02 DOI: 10.35806/IJOCED.V3I1.141
J. H. Ling, Yong Tat Lim, W. K. Leong, H. T. Sia
Silica fume (SF) and palm oil empty fruit bunch (EFB) are the by-products of the ferroalloy smelting industry and oil palm plantation, which require proper disposal to minimize the environmental impacts. To consume the by-products, the feasibility of utilizing SF and EFB to fabricate bricks was studied. Limited studies were adopting EFB as the natural fibres in bricks and its pro-portion barely exceeded 5%. With the enhancement of SF, EFB content in the mix could be increased. In this study, 336 specimens were produced in the cement-to-sand (c/s) ratios of 1:2.5 and 1:3, where SF replaced 10% to 15% cement in the mix by weight while EFB substituted 20% to 25% sand by volume. The specimens were tested for the compressive strength, density, and water absorption properties. SF was found to strengthen the mix, while EFB reduced the compressive strength and increased the water absorption capacity of the brick. Based on the evaluation results, the mix containing less than 10% SF and 20% EFB content was applicable for non-load-bearing brick.
硅灰(SF)和棕榈油空果串(EFB)是铁合金冶炼业和油棕种植业的副产品,需要妥善处理,以将环境影响降至最低。为了消耗副产品,研究了利用SF和EFB制砖的可行性。有限的研究采用EFB作为砖中的天然纤维,其比例仅超过5%。随着SF的增强,EFB在混合物中的含量可以增加。在这项研究中,在1:2.5和1:3的水泥与砂(c/s)比例下生产了336个试样,其中SF取代了混合物中按重量计10%至15%的水泥,而EFB取代了按体积计20%至25%的砂。测试了试样的抗压强度、密度和吸水性能。SF可以增强混合料的强度,而EFB降低了砖的抗压强度,提高了砖的吸水能力。根据评估结果,SF含量低于10%、EFB含量低于20%的混合料适用于非承重砖。
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引用次数: 4
A Study on Factors Affecting High Quality Fruit Tomato Production in a Greenhouse by Utilizing Low Cost Smart Agriculture Framework 利用低成本智能农业框架研究温室番茄优质生产的影响因素
Pub Date : 2020-10-01 DOI: 10.35806/IJOCED.V2I2.104
R. Saville, K. Hatanaka, D. P. Rubanga
In this paper, we present an examination of factors affecting the sweetness degree of fruit tomato by utilizing a low-cost smart agriculture framework. Japanese consumers are willing to pay a sky-high price for particularly high sweetness degree of tomato, known as fruit tomato. Japanese farmers would like to produce sustainable fruit tomato, yet only some of the veteran farmers with tens of years of experience or big industrialized farms can produce it. Small scale farmers still struggle to produce sustainable fruit tomato. Many of them would like to know what factors affecting the sweetness degree of tomato. This study aims to clarify factors affecting the sweetness degree production by using a low-cost smart agriculture framework installed in a fruit tomato farmer in Nara prefecture, a western part of Japan. The data used were automatic data gathered from the sensor network, i.e. temperature, humidity, atmospheric pressure as well as CO2; and manually input cultivation records, namely, fertilizers (Ca, NO3), pH, EC (electrical conductivity), harvesting record (yield and sweetness degree) as well as cropping calendar. We gathered data from June 2017 to December 2019. We then conducted a statistical analysis using the R statistical computing language. We found that the most significant factor for a high sweetness degree of fruit tomato is the growing time, that is the longer the growing time, the higher the sweetness degree of fruit tomato. The growing time is likely to be affected by season, as in summer growing time is faster than in wintertime. Consequently, summer is not the best time to grow fruit tomato.
在本文中,我们利用低成本的智能农业框架对影响番茄甜度的因素进行了研究。日本消费者愿意花天价购买甜度特别高的番茄,即水果番茄。日本农民希望生产可持续的水果番茄,但只有一些有几十年经验的老农民或大型工业化农场才能生产。小规模农民仍在努力生产可持续的番茄。他们中的许多人想知道是什么因素影响了番茄的甜度。本研究旨在通过使用安装在日本西部奈良县一位番茄果农身上的低成本智能农业框架,阐明影响甜度生产的因素。所使用的数据是从传感器网络收集的自动数据,即温度、湿度、大气压力以及CO2;人工输入栽培记录,即肥料(Ca、NO3)、pH、EC(电导率)、收获记录(产量和甜度)以及种植日历。我们收集了2017年6月至2019年12月的数据。然后,我们使用R统计计算语言进行了统计分析。我们发现,番茄甜度高的最重要因素是生长时间,即生长时间越长,番茄的甜度越高。生长时间可能会受到季节的影响,因为夏天的生长时间比冬天快。因此,夏天不是种植番茄的最佳季节。
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引用次数: 0
Hybridity In New Media: A Pre-Production Guideline 新媒体中的混合性:制作前指南
Pub Date : 2019-09-30 DOI: 10.35806/ijoced.v1i2.62
A. Harditya
 ‘New’ technologies have disrupted the creative process of arts and media production, but no common professional practice seems to have drastically changed. ‘New' is only a trick, a temporary euphoria indicating that creative arts and media are on its way to the utopian future. Currently, creative arts and media practitioners are influenced by the dynamically developing technologies and the big issue is that they accepted every innovational media technology unknowingly, everything is normal, but every changes lead to a new normal.  The purpose of this paper is to discover the new creative production process that influenced by new technologies. In the process of discovery, this paper uses a Practice-based Research methodology by Estelle Barrett to acknowledge the capability of these media technologies by utilising creative practices. All findings in this research are discovered by experimenting on contemporary audio visual and interactive technologies. The result of this journal is a guideline for preparing new media production.
“新”技术扰乱了艺术和媒体制作的创作过程,但似乎没有任何常见的专业实践发生巨大变化“新”只是一种把戏,一种暂时的快感,表明创意艺术和媒体正在走向乌托邦式的未来。目前,创意艺术和媒体从业者受到动态发展的技术的影响,最大的问题是他们在不知不觉中接受了每一种创新的媒体技术,一切都很正常,但每一次变化都会带来一种新的常态。本文的目的是发现受新技术影响的新的创造性生产过程。在发现的过程中,本文使用Estelle Barrett的基于实践的研究方法,通过利用创造性实践来认识这些媒体技术的能力。这项研究的所有发现都是通过对当代视听和互动技术的实验发现的。这本期刊的成果是为新媒体制作做准备的指南。
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引用次数: 2
Factors Affecting Users’ Acceptance on Enterprise Resource Planning Systems in Yemen Organizations 也门组织中影响用户接受企业资源规划系统的因素
Pub Date : 2019-09-30 DOI: 10.35806/ijoced.v1i2.59
A. Al-Sanabani, Mohammed Ali Al-Awlaqi
This study aims to unravel the factors that might have the potential to facilitate or hinder the Enterprise Resource Planning (ERP )system in the Yemen Organizations. Methods were done by interviewing 197 respondents from some Yemen organizations. The results of this study found significant positive correlationsbetween the intention to use and easiness of the ERP system. Several dependent variables were also obtained. Moreover, thecurrent study obtained the importance of human factors in thecontext of ERP.
本研究旨在揭示可能有可能促进或阻碍也门组织企业资源规划(ERP)系统的因素。方法是通过采访一些也门组织的197名受访者来完成的。本研究结果发现,使用意愿与ERP系统的易用性之间存在显著的正相关关系。还得到了几个因变量。此外,目前的研究还得到了人的因素在ERP环境中的重要性。
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引用次数: 1
Effective Graph Protection Method to Prevent the Spreading of Attacks in Networks 防止攻击在网络中传播的有效图保护方法
Pub Date : 2019-09-30 DOI: 10.35806/ijoced.v1i2.61
A. Wijayanto, A. Pindarwati
Networks are fundamental models for representing and analyzing the structures of real-world systems. For instance, in social networks, nodes are used to represent users and edges represent the connection between users. Networks are also termed as graphs in the discrete mathematics language. One essential problem in networks is how to protect a limited number of nodes to prevent the spreading of malicious attacks or dangerous rumor in the networks, which is known as the graph protection problem. In this paper, an effective graph protection method called PowerShield is proposed which pre-emptively protects critical nodes prior to any incoming attacks. It combines connectivity and centrality criteria of the input graph. Connectivity criterion is measured by the principal eigenvector, i.e., the eigenvector corresponding to the largest eigenvalue of the adjacency matrix of the input graph. Centrality criterion is defined by the degree centrality which considers nodes having more neighborhood relations to be more important. Contrary to the existing state-of-the-art method which takes into account only the connectivity criterion, the proposed method combines both criteria and empirically improves the effectiveness of protection result.
网络是表示和分析真实世界系统结构的基本模型。例如,在社交网络中,节点用于表示用户,边表示用户之间的连接。在离散数学语言中,网络也被称为图。网络中的一个重要问题是如何保护有限数量的节点,以防止恶意攻击或危险谣言在网络中传播,这就是所谓的图保护问题。本文提出了一种有效的图保护方法PowerShield,该方法在任何传入攻击之前对关键节点进行先发制人的保护。它结合了输入图的连通性和中心性准则。连通性准则是通过主特征向量来测量的,即与输入图的邻接矩阵的最大特征值相对应的特征向量。中心性准则是由认为具有更多邻域关系的节点更重要的程度中心性来定义的。与现有技术中只考虑连通性准则的方法相反,该方法结合了这两个准则,并从经验上提高了保护结果的有效性。
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引用次数: 0
Decomposition of Nitrous Oxide over Cu/TiO2 Catalysts: The Effect of Cu Loading, TiO2 Structure, and Reaction Conditions Cu/TiO2催化剂上氧化亚氮的分解:Cu负载、TiO2结构和反应条件的影响
Pub Date : 2019-09-30 DOI: 10.35806/ijoced.v1i2.63
K. Yanagida, W. Kurniawan, C. Salim, H. Hinode
Decomposition of nitrous oxide (N2O) over titania (TiO2) supported copper (Cu) catalyst was investigated with the existence of oxygen and water vapor. The catalytic activity of TiO2 was promoted by copper loading. It was found that there are optimum levels of copper loading on TiO2, and these values are correlated to the specific surface area of TiO2 support being used. The relationship between the catalytic activity for decomposition of N2O and the crystal structure of TiO2 was also investigated. The result revealed that Cu/TiO2 catalysts with the rutile structure has a higher activity toward N2O decomposition than those with the anatase structure. In this research, Cu(5wt%)/TiO2 prepared from TiO2 JRC-TIO-4 (reference catalyst provided by Catalysis Society of Japan) which was mainly constituted of rutile showed the highest activity for N2O decomposition and it could decompose N2O completely at 650℃. The catalytic activity was inhibited by the existence of oxygen. However, there was no influence of water vapor to the catalytic activity of Cu/TiO2 for N2O decomposition. 
在氧和水蒸气存在下,研究了氧化亚氮(N2O)在二氧化钛(TiO2)负载的铜(Cu)催化剂上的分解。负载铜提高了TiO2的催化活性。发现在TiO2上存在铜负载的最佳水平,并且这些值与所使用的TiO2载体的比表面积相关。还研究了氧化亚氮分解的催化活性与TiO2晶体结构之间的关系。结果表明,金红石结构的Cu/TiO2催化剂对N2O的分解活性高于锐钛矿结构的催化剂。在本研究中,以金红石为主要成分的TiO2 JRC-TIO-4(日本催化学会提供的参考催化剂)制备的Cu(5wt%)/TiO2对N2O的分解活性最高,在650℃下可以完全分解N2O。氧的存在抑制了催化活性。然而,水蒸气对Cu/TiO2分解N2O的催化活性没有影响。
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引用次数: 0
A Review on Measurement Methods for Machining Induced Residual Stress 加工残余应力测量方法综述
Pub Date : 2019-09-30 DOI: 10.35806/ijoced.v1i2.64
K. Saptaji, S. Afiqah, R. D. Ramdan
The chip formation in mechanical machining / cutting process involves thermal loading and mechanical loading in the form of large plastic deformations, high strain, strain rates and high temperatures in the cutting zone. These loadings usually induce plastic deformation in the form of residual stresses in the surface and sub-surface of the machined workpiece. Residual stress issue is essential to be studied in order to control the quality and fatigue life of a component or part produced by machining process. Therefore, the magnitude and depth of the residual stresses into the workpiece sub-surface is important and necessary to be measured. The objective of this paper is to discuss various study on the effects of machining parameters on residual stress and residual stress measurement methods for machined workpiece namely non-destructive, semi-destructive and destructive methods. In addition, the effect of machining process into the metallurgical conditions of the workpiece in the form of microstructural changes is also discussed.
机械加工/切削过程中的切屑形成涉及热载荷和机械载荷,其形式是大塑性变形、高应变、高应变率和切削区高温。这些载荷通常在被加工工件的表面和次表面以残余应力的形式引起塑性变形。为了控制加工过程中所生产的零件的质量和疲劳寿命,必须研究残余应力问题。因此,测量工件亚表面残余应力的大小和深度是重要和必要的。本文的目的是讨论加工参数对残余应力影响的各种研究以及加工工件残余应力的测量方法,即无损法、半破坏性法和破坏性法。此外,还讨论了加工过程以微观组织变化的形式对工件的金相条件的影响。
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引用次数: 14
期刊
Indonesian Journal of Computing Engineering and Design
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