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2019 11th International Conference on Information Technology and Electrical Engineering (ICITEE)最新文献

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Research On The Impact of Knowledge Management Practice for Ogranizational Performance: Indonesian Electronic Power Company 知识管理实践对组织绩效的影响研究:印尼电力公司
D. I. Sensuse, R. Rusli, Y.P. Noni Pamungkas, C. Haryani, Jurnalistika Febra, Sofian Lusa, Nadya Safitri, P. Prima
The State-Owned Company called Indonesian Electronic Power Company that provides services to customers and the public in the electricity in Indonesia required to fulfill effective, efficient, timely, and economical public services. The challenge to perform the services were responded by implementing knowledge management (KM) at Indonesian Electronic Power Company since 2008. This study is trying to gets the answer for the following research question: How the implementation of Knowledge Management impact on the organizational performance of Indonesian Electronic Power Company?The study was conducted using a quantitative questionnaire with Indonesian Electronic Power Company employees from different unit in Indonesian Electronic Power Company working areas as respondents. There were ten hypotheses tested, regarding the KM impact to People, Process, Product, and the Organizational Performance. The findings show that each hypothesis is proven with some notes. The result could also be relevant to the other state-owned company that is already implementing KM.
这家国有公司名为印尼电力公司,为客户和公众提供印尼所需的电力服务,以实现有效、高效、及时和经济的公共服务。自2008年以来,印度尼西亚电力公司通过实施知识管理(KM)来应对执行服务的挑战。本研究试图回答以下研究问题:印尼电力公司实施知识管理对组织绩效有何影响?本研究采用定量问卷的方式,以印尼电力公司工作区域内不同单位的员工为调查对象。关于知识管理对人员、过程、产品和组织绩效的影响,测试了十个假设。研究结果表明,每一个假设都得到了一些注解的证明。这一结果也可能与其他已经实施KM的国有企业相关。
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引用次数: 1
A Virtual Spring Damper Method for Formation Control of the Multi Omni-directional Robots in Cooperative Transportation 多全向机器人协同运输编队控制的虚拟弹簧阻尼法
Kanin Piemngam, I. Nilkhamhang, P. Bunnun
This research reports the formation control method of multi holonomic robots for cooperative transportation. The proposed method is based on the concept of a virtual structure. There are virtual springs and dampers link between the virtual leader (VL) and follower robots. With the virtual spring and damper forces, a group of robots can follow the VL while keeping the distance from the VL and other follower robots to avoid a collision among them. The algorithm required a predefined formation shape and size depend on a transport object. The proposed method was developed based on the Robot Operating System (ROS) and evaluated in the simulation software Gazebo. Two experiments were conducted by using the 3D model of our Mecanum wheel robot platform. In the first experiment, the four follower robots can aggregate to the position of the VL to form a diamond shape formation. In the second experiment, a group of follower robots with an object on their bodies can maintain a formation while following the VL along a predefined trajectory. The simulation results confirm that the method proposed in this paper is feasible for the cooperative transportation task.
研究了多完整机器人协同运输的编队控制方法。该方法基于虚拟结构的概念。虚拟领导机器人和跟随机器人之间存在虚拟弹簧和阻尼器连接。在虚拟弹簧力和阻尼力的作用下,一组机器人可以跟随VL,同时与VL和其他跟随机器人保持一定的距离,避免它们之间的碰撞。该算法需要基于传输对象的预定义队形和大小。基于机器人操作系统(ROS)开发了该方法,并在仿真软件Gazebo中进行了评估。利用Mecanum轮式机器人平台的三维模型进行了两次实验。在第一个实验中,四个跟随机器人可以聚集到VL的位置,形成一个菱形队形。在第二个实验中,一组跟随机器人的身体上有一个物体,可以保持队形,同时沿着预定的轨迹跟随VL。仿真结果表明,本文提出的方法对于协同运输任务是可行的。
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引用次数: 5
Efficient Partial Retransmission ARQ Strategy with Verification-based Decoding for Nonbinary Block Codes 基于验证解码的非二进制分组码部分重传ARQ策略
U. Tuntoolavest, Pawarit Manakul
In previous work, a verification-based decoding was used to indicate an approximate beginning of uncorrectable error patterns for nonbinary convolutional codes. Sender then retransmitted a partial frame, which included some unnecessary symbols. This paper proposes a more efficient ARQ with minimum retransmitted symbols thanks to the fact that the selected decoder can pinpoint exact error symbol positions. Preferred feedback frame structure is also proposed. Simulation results show that for a (60, 30) LDPC codes in a 2-state fading channel, the feedback frame with the subgroup format is preferred over the fixed size or the binary coded format. For this code, the shortest feedback frame uses 15 subgroups with 4 members for the whole range of the transition probability of non-fade to fade state of 0.05-0.25. It is better than the 3, 6, 10 and 12 members per subgroup because “15” is close to a power of 2 and “4” is small enough since the only subgroups with wrong symbols will be included in the feedback frame.
在以前的工作中,基于验证的解码被用来指示非二进制卷积码的不可纠正错误模式的近似开始。然后发送方重新传输了部分帧,其中包含一些不必要的符号。由于所选择的解码器可以精确定位错误符号的位置,因此本文提出了一种更有效的重传符号最少的ARQ。提出了首选反馈框架结构。仿真结果表明,对于2状态衰落信道中的(60,30)LDPC码,子组格式的反馈帧优于固定大小或二进制编码格式。对于这段代码,最短的反馈帧使用15个子组和4个成员,用于整个范围内的非渐变到渐变状态的转换概率为0.05-0.25。它比每个子群的3、6、10和12个成员要好,因为“15”接近2的幂,而“4”足够小,因为只有带有错误符号的子群才会被包含在反馈框架中。
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引用次数: 5
Activated Carbon as the Counter Electrode on Perovskite Solar Cells 活性炭作为钙钛矿太阳能电池对电极的研究
Rembianov, L. Kevin, J. Sulistianto, N. R. Poespawati
Perovskite is an active material that can generate electrons when exposed to rays that are currently widely investigated in the development of perovskite solar cells. Perovskite solar cells become the fastest of increasing efficiency compared with other solar cell materials. In the perovskite solar cells development, cost efficiency becomes a challenge for commercialization and mass production. The use of silver (Ag) or gold (Au) as the counter electrode (CE) of perovskite solar cells increases the cost production highly. In addition to very expensive material prices, high-energy consumption is needed to evaporate silver and gold onto the FTO glass which makes the manufacturing process expensive. Carbon material has been a great candidate to replace silver or gold as the CE of perovskite solar cells. The electrical properties of carbon materials closely resemble the electrical properties of gold which makes carbon more advantageous compared with silver or gold. Activated carbon made from burnt coconut shells is one type of carbon using low-cost materials which is easy to get considering that Indonesia has a beach overgrown by palm trees. In this research, we will use activated carbon made from burning coconut shells as the CE of perovskite solar cells. The data shows a comparison between pure activated carbon and activated carbon mixed with paraffin oil. The result concludes that activated carbon mixed with paraffin oil shows the best performance with VOC of 0.7 V, of 2.25 mA, and FF of 0.371.
钙钛矿是一种活性材料,当暴露于射线时可以产生电子,目前在钙钛矿太阳能电池的开发中被广泛研究。钙钛矿太阳能电池与其他太阳能电池材料相比,效率提高最快。在钙钛矿太阳能电池的发展过程中,成本效益成为实现商业化和大规模生产的一个挑战。使用银(Ag)或金(Au)作为钙钛矿太阳能电池的对电极(CE),大大增加了生产成本。除了非常昂贵的材料价格外,将银和金蒸发到FTO玻璃上需要高能量消耗,这使得制造过程非常昂贵。碳材料已成为替代银或金作为钙钛矿太阳能电池CE的重要候选材料。碳材料的电学性质与金的电学性质非常相似,这使得碳比银或金更有优势。由烧焦的椰子壳制成的活性炭是一种使用低成本材料的碳,考虑到印度尼西亚的海滩上长满了棕榈树,这种碳很容易获得。在这项研究中,我们将使用燃烧椰子壳制成的活性炭作为钙钛矿太阳能电池的CE。数据显示了纯活性炭和与石蜡油混合的活性炭的比较。结果表明,活性炭与石蜡油的混合性能最佳,VOC为0.7 V, 2.25 mA, FF为0.371。
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引用次数: 6
The X-Layer Optimization in CRN Using Deep Q-Network for Secure High Speed Communication 基于深q网络的高速安全通信CRN的x层优化
Chowdhury Sajadul Islam, Md. Sarwar Hossain Mollah
Cognitive Radio Networks (CRNs) offers an effective solution for radio spectrum scarcity problem and cyber-security to the growth of 5G technologies and the Internet of Things (IoT) devices. In this paper, the CRNs do cross-layer (X-layer) optimization by finding the parameters from the physical layer (Layer-1) of the OSI model and the network layer (Layer-3) of the OSI model so as to progress the end-to-end secure transmission of cognition for 5G and IoT traffic. The proposed model follows the invention target by applying a Deep Q-Network (DQN) to select after that hop for sending based on the waiting duration found on every router when keeping SINR lower than threshold determines by primary channel. A fully linked feed-forward Multilayer Perceptron (MLP) model is applied by secondary users (SUs) to estimate the activity value function. The activity value contains SINR to the primary user (PU) at the layer-1 and following hop to the routers for every packet at the layer-3. The advantage to the neural network (NN) is Mean Opinion Score (MOS) for secure encrypted high-resolution video traffic over 5G network which depends upon the packet drop rate and the bit error rate applied for transmission. As evaluated to the execution of DQN learning at the physical layer, this system gives for 37% gain in the video quality for routers with short queues and besides reaches a balanced load upon a network with routers with different service rates.
认知无线电网络(crn)为5G技术和物联网设备的发展提供了有效解决无线电频谱稀缺问题和网络安全的方案。在本文中,crn通过从OSI模型的物理层(layer -1)和网络层(layer -3)中寻找参数,进行跨层(x层)优化,推进5G和物联网流量认知的端到端安全传输。该模型遵循本发明的目标,在保持SINR低于主信道确定的阈值的情况下,应用深度q网络(Deep Q-Network, DQN)根据在每个路由器上找到的等待时间选择该跳之后的发送跳。二级用户(su)采用全链接前馈多层感知器(MLP)模型估计活动值函数。activity值包含到第一层主用户(primary user, PU)的SINR,以及到第三层路由器的后续跳数。神经网络(NN)的优点是在5G网络上安全加密的高分辨率视频流量的平均意见分数(Mean Opinion Score, MOS),这取决于传输时应用的丢包率和误码率。通过对物理层DQN学习执行情况的评估,该系统对于具有短队列的路由器的视频质量提高了37%,并且在具有不同服务速率的路由器的网络上达到了均衡负载。
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引用次数: 1
Higuchi and Katz Fractal Dimension for Detecting Interictal and Ictal State in Electroencephalogram Signal 脑电图信号中分形维数检测的Higuchi和Katz
I. Wijayanto, Rudy Hartanto, H. A. Nugroho
Epilepsy is a neurological disorder which may occur in every human being. The existence of a seizure showed as the characteristic of this disorder. International League Against Epilepsy (ILAE) mentioned that the diagnose of epilepsy required a minimum of two seizure event in 24 hours. A standard tool used by the neurologist to diagnose epilepsy was Electroencephalogram (EEG). An automatic seizure detection in EEG signal may help them to identify the pattern of ictal condition. Since the characteristic of the EEG signal were dynamic and nonstationary, it was very challenging to interpret the signal pattern. In this study, we analyzed the use of Higuchi and Katz fractal dimension as a feature extraction method to detect an interictal and ictal state in the EEG signal. These two states were essential in the term of seizure detection and prediction system. EEG signal extracted into five frequency bands called delta, theta, alpha, beta, and gamma. Each frequency showed a different characteristic of brain-behavior in a specific condition. The extracted features then fed into a support vector machine (SVM) to classify between normal with interictal and ictal states. The proposed method able to determine normal vs. ictal state with 100% of accuracy. On the other hand, the best accuracy obtained for detecting normal vs. interictal state was 99.5%.
癫痫是一种神经系统疾病,每个人都可能发生。癫痫发作是这种疾病的特征。国际抗癫痫联盟(ILAE)提到,癫痫的诊断需要在24小时内至少发生两次发作事件。脑电图(EEG)是神经科医生诊断癫痫的标准工具。脑电图信号中的自动癫痫检测可以帮助他们识别精神状态的模式。由于脑电信号具有动态和非平稳的特点,对信号模式的解释具有很大的挑战性。在本研究中,我们分析了使用Higuchi和Katz分形维数作为特征提取方法来检测脑电信号中的间隔态和间隔态。这两种状态在癫痫检测和预测系统中是必不可少的。脑电图信号被提取成五个频带分别是,,,,和。每种频率显示了特定条件下大脑行为的不同特征。然后将提取的特征输入到支持向量机(SVM)中,对正常状态、间隔状态和临界状态进行分类。所提出的方法能够以100%的准确率确定正常与临界状态。另一方面,检测正常状态和间隔状态的最佳准确度为99.5%。
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引用次数: 14
A Density Discriminant Index for Cluster Validation 聚类验证的密度判别指标
Supphawarich Thanarattananakin, P. Padungweang, Worarat Krathu
Clustering analysis is widely applied in several domains of study. Using a suitable number of clusters is one of the most important factors to influence the performance of clustering. Several algorithms of cluster validation have been developed to find such a number. In this paper, we proposed a method for cluster validation adapted from the Discrimination Evaluation via Optic Diffraction Analysis (DEODA) algorithm to derive an appropriate number of clusters. In particular, our method uses DEODA to perform within- and between-cluster discrimination analysis in order to find the suitable number of clusters. We evaluate our method by comparing similarity score against the existing cluster validation algorithm i.e., the Silhouette index. The results show that the similarity scores derived from our method are higher than results yielded from the Silhouette index.
聚类分析在许多研究领域得到了广泛的应用。使用合适数量的聚类是影响聚类性能的最重要因素之一。为了找到这样一个数字,已经开发了几种聚类验证算法。本文提出了一种基于光学衍射分析(DEODA)算法的聚类验证方法,以获得合适的聚类数量。特别是,我们的方法使用DEODA进行聚类内和聚类之间的判别分析,以找到合适的聚类数量。我们通过比较相似性得分与现有的聚类验证算法(即Silhouette指数)来评估我们的方法。结果表明,我们的方法得到的相似度分数高于剪影指数得到的结果。
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引用次数: 1
Effect of Perovskite Precursors Molarity on Solar Cell Performance 钙钛矿前驱体摩尔浓度对太阳能电池性能的影响
N. R. Poespawati, L. Kevin, T. Abuzairi, R. P, J. Sulistianto, Rembianov
Solar cell is a very new renewable power supply and it still in the development process. Especially with the perovskite-based solar cell (PSC) which in recent year it shows a very high potential of being very efficient power. It has not been the most efficient but the increase or its efficiency percentage is exponentially increasing. In this work, we want to find the most efficient molarity for PbC12. We were using the spin coating and annealing method to make layers of material on top of FTO glass. This method is very simple and easy to use. The PSC structure consists of 6 layers, namely FTO glass, Electron Transfer Material (ETM), Perovskite, Hole Transfer Material (HTM), carbon, and FTO glass. Perovskite on this solar cell is the active layer where this layer will generate electron and hole when it is shined by sunlight. The probability of electron-hole generation will be increased by the more particle of precursors in this active layer. The molarity of precursors of this layer affects the amount of its particle and will raise the performance of the solar cell. From the fabrication results by varying the molarity, it was found that the perovskite-based solar cell with 0.5M of PbC12 is best molarity value with much less PbC12 and MAI needed to make it which save more material, and with the highest result of the performance of the PSC, namely 0.56V Voc, 2.37mAIsc, and 0.33 fill factor.
太阳能电池是一种新兴的可再生能源,目前仍处于发展阶段。特别是近年来出现的钙钛矿基太阳能电池(PSC),显示出成为高效能源的巨大潜力。它不是最有效的,但它的效率百分比呈指数增长。在这项工作中,我们想要找到PbC12的最有效摩尔浓度。我们使用自旋镀膜和退火方法在FTO玻璃上制作材料层。这种方法非常简单,易于使用。PSC结构由6层组成,分别是FTO玻璃、电子转移材料(ETM)、钙钛矿、空穴转移材料(HTM)、碳和FTO玻璃。这个太阳能电池上的钙钛矿是活性层,当它被阳光照射时,会产生电子和空穴。活性层中前驱体粒子越多,电子空穴产生的可能性越大。该层前驱体的摩尔浓度影响其颗粒的数量,从而提高太阳能电池的性能。从改变摩尔浓度的制备结果来看,0.5M PbC12的钙钛矿基太阳能电池是最佳的摩尔浓度值,制备所需的PbC12和MAI更少,节省了更多的材料,PSC的性能最高,即0.56V Voc, 2.37mAIsc, 0.33填充因子。
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引用次数: 0
NB-IoT System Performance Enhancement using Directional Antenna 利用定向天线增强NB-IoT系统性能
Tanatawan Kamolklang, Apiwat Junlasat, M. Uthansakul
Nowadays NB-IoT has gained lots of attention from researcher so far as its many advantages. This paper shows an increase in NB-IoT performance when employing directional antenna. The designed microstrip antenna is fabricated for testing the NB-IoT performance in real circumstances. From experiment, the signal strength when employing the proposed antenna is higher comparing to the case of omni-directional antenna.
目前,NB-IoT以其诸多优点受到了研究者的广泛关注。本文展示了采用定向天线可以提高NB-IoT的性能。为在实际环境中测试NB-IoT的性能,制作了所设计的微带天线。实验表明,与全向天线相比,该天线的信号强度更高。
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引用次数: 1
Video Path Selection for Traffic Engineering in SDN SDN中流量工程视频路径选择
Adiluck Chooprateep, Yuthapong Somchit
This paper proposes the video path selection algorithm for traffic engineering in SDN called Video Path Selection Algorithm (VPSA). The proposed algorithm uses the past and the latest bandwidth usage data collected by the controller for calculating a suitable path. If there is no suitable path for the video request, this algorithm can choose the mode whether it will reject or accept the requests with reduced bandwidth rate. The performance of the proposed algorithm is compared with Bandwidth Guaranteed routing algorithm using Holding Times (BGHT) and Shortest-Distance Path algorithm (SDP). The evaluation results show that the proposed algorithm has the accepted number of video requests more than the other algorithms in the rejected traffic mode. Moreover, the proposed algorithm also has the amount of reduced bandwidth lower than the other algorithms in the non-rejected traffic mode.
本文提出了一种用于SDN流量工程的视频路径选择算法——视频路径选择算法(VPSA)。该算法利用控制器收集的过去和最近的带宽使用数据来计算合适的路径。当视频请求没有合适的路径时,该算法可以选择是拒绝还是接受带宽率降低的视频请求。将该算法的性能与基于保持时间的带宽保证路由算法(BGHT)和最短距离路径算法(SDP)进行了比较。评价结果表明,在拒绝流量模式下,该算法接受的视频请求数高于其他算法。此外,在非拒绝流量模式下,所提出的算法还具有比其他算法更低的带宽减少量。
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引用次数: 4
期刊
2019 11th International Conference on Information Technology and Electrical Engineering (ICITEE)
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