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1st International Conference on Technology Innovation and Its Applications, ICTIIA 2022

作者： Pratama, Yudhistira Adhitya Iswara, Bagus Ajie Nababan, Adli Abdillah Information System Studies Program Pelita Harapan University Medan Campus Faculty Of Computer Science Medan Indonesia Master's Study Program Informatics Engineering Universitas Sumatera Utara Faculty Of Computer Science And Information Technology Medan Indonesia Digital Business Study Program Stmik Pelita Nusantara Medan Indonesia

ISBN: (数字)9781665488266

ISBN: (纸本)9781665488266

Widyaiswara is required to show the best performance to fulfill his duties and obligations. Therefore, it is very important to measure the performance of the Widyaiswara, so that it can be used as evaluation material by the BPSDM PROVSU. However, the assessment process that occurs is still not precise and time-consuming. Therefore, to minimize this, a decision support system is needed that can minimize time errors and data processing in decision-making so that the assessment runs well and accurately. This system was built by applying the WASPAS method and the TOPSIS method. Based on the results of tests carried out five times, the results of the WASPAS method processing time resulted in an average processing time of 0.00029791 ms and an average memory usage value of 2.836.44 kb, while the results of the TOPSIS method processing time test resulted in an average processing time - an average of 0.000296428 ms and an average memory usage value of 2.862.34 kb. © 2022 IEEE.

关键词： Decision support systems

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Rectangular substrate integrated waveguide with negligible losses for multiband applications 6

Rectangular substrate integrated waveguide with negligible l...

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6th International Symposium on Next Generation Electronics, ISNE 2017

作者： Banwari, Anamika Acharya, Nagaraj Kumar Sharma, Manish Saxena, Sanjeev Institute of Electronics Engineering National Tsing Hua University Hsinchu Taiwan Undergraduate Program of Electrical Engineering National Tsing Hua University Hsinchu Taiwan Institute of Engineering and System Science National Tsing Hua University Hsinchu Taiwan Department of Electronics and Communication Engineering Amity University Noida India

ISBN: (纸本)9781538630969

This paper reported a design of dielectric rectangular waveguide. It is profitable to transmit extremely high frequencies with insignificant losses. The dimensions of the waveguide are 3×2.3×0.015 cm3. The Polyimide of permittivity 3.5 is used as a substrate. The reflection loss is below-15dB for C, X, Ku and K band frequencies. The return loss is-104.2102 dB and VSWR is 1. The proposed waveguide is of compact size and has multiband performance, insignificant loss and also high performance. It can be used in wireless communication systems. © 2017 IEEE.

关键词： Substrate integrated waveguides

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Beamspace AIC & MDL Algorithm for Based on Concentric Circular Array Antenna

Beamspace AIC & MDL Algorithm for Based on Concentric Circul...

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International Symposium on Soft Computing and Intelligent systems (SCIS)

作者： Heui-Seon Park Suk-seung Hwang Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence System Chosun University Gwangju Korea Interdisciplinary Program in IT-Bio Convergence System School of Electronic Engineering Chosun University Gwangju Korea

ISBN: (数字)9798350373332

ISBN: (纸本)9798350373349

In modern wireless communication systems using multiple antenna elements, accurately identifying the signals contained in the received signal is very important. Conventional signal number estimation algorithms operate for the entire set of antenna elements, resulting in high computational complexity. In order to enhance this high computational complexity problem, this paper proposes beamspace based Akaike Information Criterion (AIC) and Minimum Description Length (MDL) algorithms based on a concentric circular array (CCA) antenna for efficient signal number estimation. In addition, computer simulation results are presented to evaluate the signal-number estimation performance of the proposed algorithm.

关键词： Wireless communication Array signal processing Computer simulation Estimation Computational complexity MIMO communication Antenna arrays

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Effect of injection molding conditions on mold adhesion force during thermoplastic polyurethane injection molding

Effect of injection molding conditions on mold adhesion forc...

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2018 Society of Plastics Engineers Annual Technical Conference, ANTEC 2018

作者： Chen, Jian-Yu Huang, Ming-Shyan Nian, Shih-Chih Bachelor Program of Precision System Design Feng Chia University Taiwan Dept. of Mechanical and Automation Engineering National Kaohsiung First University of Science and Technology Taiwan Dept. of Power Mechanical Engineering National Taitung College Taiwan

Injection molding is one of the most common methods for the mass production of plastic products with complex geometries. However, while injection molding is a highly convenient and cost-effective method, some problems still remain, including warpage, quality variations, surface defects, insufficient physical properties of the finished parts, and so on. During the ejection stage, one of the most serious problems is that of sticking at the interface between the molded part and the cavity surface. The adhesion force inhibits the release of the molded part from the mold surface, and can lead to serious defects, such as distortion and cracking. The adhesion phenomenon is particularly common in the injection molding of thermoplastic polyurethane (TPU). Numerous factors affect the intensity of the mold adhesion force, including the injection molding conditions, the surface morphology, the surface modification conditions, and the rheological properties of the molten polymer. To clarify the effect of the molding conditions on the mold adhesion level, the present study uses a tensile mode mold adhesion tester to measure the adhesion force for various values of the mold temperature, melt temperature and injection speed. In addition, the surface free energy (SFE) of the molded parts is measured in order to better understand the correlation between the wettability and the processing conditions. © 2018 Society of Plastics Engineers. All rights reserved.

关键词： Injection molding

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A Location Estimation Algorithm Combined with TDOA and TOA Considering Repeaters

A Location Estimation Algorithm Combined with TDOA and TOA C...

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International Conference on Ubiquitous and Future Networks, ICUFN

作者： Seul-Bi Jeon Heui-Seon Park Tae-Ho Jo Suk-Seung Hwang Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence System Chosun University Gwangju Korea Interdisciplinary Program in IT-Bio Convergence System School of Electronic Engineering Chosun University Gwangju Korea

Location Detection Technology (LDT), which accurately estimates the location of a mobile station (MS), is one of core techniques for the modern communication system. Among various LDTs, Time of arrival (TOA) and Time Difference of Arrival (TDOA) are the most commonly employed method, which calculates the location of MS based on at least three signals from base stations (BSs). In the urban environment, many repeaters have been installed for overcoming the radio shadow area problem of a receiver, but they cause the serious errors of the location estimation when we utilize signals passed through repeaters. In order to enhance this problem, in this paper, we introduce the combined location estimation approach with TDOA and TOA considering the repeater, based on signals from two repeaters and one BS.

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Contact Lens Automatic Optical Inspection Method Based on YOLOv9 13

Contact Lens Automatic Optical Inspection Method Based on YO...

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Joint 13th International Conference on Soft Computing and Intelligent systems and 25th International Symposium on Advanced Intelligent systems, SCIS and ISIS 2024

作者： Kim, Tae-Yun Lee, Bumshik Hwang, Suk-Seung Institute of Ai Convergence Chosun University Gwangju Korea Republic of Chosun University Department of Information and Communications Engineering Gwangju Korea Republic of School of Electronic Engineering Chosun University Interdisciplinary Program in IT-Bio Convergence System Gwangju Korea Republic of

ISBN: (纸本)9798350373332

Traditional inspection methods for contact lenses primarily involved manual examination, where workers directly assessed the physical properties and manufacturing defects of the lenses. Consequently, the quality determination relied on the workers' judgment, leading to inconsistencies. In order to address this issue, although Automated Optical Inspection (AOI) was introduced, it has limitations in applying to various types of contact lenses. As part of research to utilize deep learning in AOI, this paper introduces a You Only Look Once (YOLO) v9-based contact lens inspection technique that leverages a small dataset of contact lens images. This method involves training YOLO v9 with the limited number of images that include various defects such as bubbles, cracks, and foreign particles, as well as images of defect-free contact lenses. © 2024 IEEE.

关键词： Contact lenses

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Comparison Analysis of Intrusion Detection using Deep Learning in IoT Networks 11

Comparison Analysis of Intrusion Detection using Deep Learni...

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11th International Conference on Information and Communication Technology, ICoICT 2023

作者： Ikhwan, Syariful Purwanto, Purwanto Rochim, Adian Fatchur Diponegoro University Doctoral Program of Information System School of Postgraduate Studies Semarang Indonesia Institut Teknologi Telkom Purwokerto D3 Telecommunication Engineering Banyumas Indonesia Diponegoro University Faculty of Engineering Department of Chemical Engineering Semarang Indonesia Diponegoro University Faculty of Engineering Department of Computer Engineering Semarang Indonesia

ISBN: (纸本)9798350321982

This study focuses on network security for Internet of Things (IoT) devices, which are particularly vulnerable to attack due to limited security measures. To protect IoT networks from attackers, the research implemented intrusion detection on the networks. The study compared several Deep Learning algorithms, including DNN, CNN, LSTM, and AE, to identify the most effective algorithm for solving network security problems using intrusion detection. The research used the UNSW-NB15 dataset for testing and employed binary classification for evaluation. The results showed that the DNN algorithm achieved an accuracy value of 99.76% and a loss value of 0.006%, outperforming the other algorithms. This study highlights the importance of implementing intrusion detection in protecting IoT devices and networks and demonstrates the efficacy of the DNN algorithm in detecting and preventing network security breaches. © 2023 IEEE.

关键词： Internet of things

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Machine learning based prediction of cognitive metrics using major biomarkers in SuperAgers

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Scientific Reports 2025年第1期15卷 1-20页

作者： Hyo-Bin Lee Jang-Hwan Choi So-Yeon Kwon Ji-Hae Park Young Mi Park Bori Kim Geon-Ha Kim Department of Computational Medicine Graduate Program in System Health Science and Engineering Ewha Womans University Seoul 07804 Korea Department of Artificial Intelligence Ewha Womans University Seoul 03760 Korea Department of Molecular Medicine Ewha Womans University Seoul 07804 Korea Department of Neurology Ewha Womans University Mokdong Hospital Ewha Womans University Seoul 07985 Korea

As populations age, understanding cognitive decline and age-related diseases like dementia has become increasingly important. “SuperAgers,” individuals over 65 with cognitive abilities similar to those in their 40s, provide a unique perspective on cognitive reserve. This study analyzed 55 blood biomarkers, including cellular components and metabolism/inflammation-related factors, in 39 SuperAgers and 42 typical agers. While conventional statistical analyses identified significant differences in only four biomarkers, advanced feature selection and machine learning techniques revealed a broader set of 15 key biomarkers associated with SuperAger status. A predictive model built using these biomarkers achieved an accuracy of 76% in cognitive domain prediction. To address the limitation of small sample sizes, data augmentation leveraging large language models improved the model’s robustness. Shapley Additive exPlanations (SHAP) provided interpretability, revealing the impact of specific blood factors on cognitive function. These findings suggest that certain blood biomarkers are not only associated with cognitive performance but may also serve as indicators of cognitive reserve. By utilizing simple blood tests, this research presents a clinically significant method for predicting cognitive function and identifying SuperAger status in healthy elderly individuals, offering a foundation for future studies on the biological mechanisms underpinning cognitive resilience.

关键词： BORUTA Blood biomarkers Cognitive decline Cognitive function Cognitive metric prediction Machine learning Recursive feature elimination (RFE) Super-Agers

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Collaboration maturity and the offshoring cost barrier: The trade-off between flexibility in team composition and cross-site communication effort in geographically distributed development projects

Collaboration maturity and the offshoring cost barrier: The ...

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IEEE International Professional Communication Conference (IPCC)

作者： Lasser, S Heiss, M Siemens AG Austria PSE Austria Vienna University of Technology Austria Program and System Engineering (PSE) Division Siemens AG Austria Austria Fachhochschule des bfi Wien (University of Applied Sciences of the bfi Vienna) Austria

ISBN: (纸本)078039027X

This paper analyzes how total project costs are split into operative costs and distribution costs. This split depends on the collaboration model being applied and the level of maturity of the collaboration. The lower the collaboration maturity, the more significant the so-called offshoring cost barrier, i.e. the resources and time needed to progress toward more cost-effective forms of collaboration. The low-cost offshoring problem is stated as a cost optimization problem, with customer requirements and internal requirements as boundary conditions. The more degree of freedom is available for project team composition, the better the result will be. The project team composition is always a trade-off between including the best available experts from different sites and the corresponding communication and coordination problems. Finally we will show how Siemens PSE (a Siemens-in-house R&D division with 5500 engineers distributed over 20 sites) is organized in terms of optimizing the low-cost offshoring problem.

关键词： collaboration model distribution costs global software development low-cost offshoring problem offshoring cost barrier team composition

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One-step flow synthesis of size-controlled polymer nanogels in a fluorocarbon microfluidic chip

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RSC Advances 2024年第16期14卷 11258-11265页

作者： Montalbo, Reynaldo Carlos K. Wu, Meng-Jie Tu, Hsiung-Lin Institute of Chemistry Academia Sinica Taipei11529 Taiwan Nanoscience and Technology Taiwan International Graduate Program Academia Sinica Taipei11529 Taiwan Department of Engineering and System Science National Tsing-Hua University Hsinchu300044 Taiwan Department of Chemistry National Cheng-Kung University Tainan70101 Taiwan Genome and Systems Biology Degree Program Academia Sinica and National Taiwan University Taiwan

Synthetic polymer nanoparticles (NPs) with biomimetic properties are ideally suited for different biomedical applications such as drug delivery and direct therapy. However, bulk synthetic approaches can suffer from poor reproducibility and scalability when precise size control or multi-step procedures are required. Herein, we report an integrated microfluidic chip for the synthesis of polymer NPs. The chip could sequentially perform homopolymer synthesis and subsequent crosslinking into NPs without intermediate purification. This was made possible by fabrication of the chip with a fluorinated elastomer and incorporation of two microfluidic mixers. The first was a long channel with passive mixing features for the aqueous RAFT synthesis of stimuli-responsive polymers in ambient conditions. The polymers were then directly fed into a hydrodynamic flow focusing (HFF) junction that rapidly mixed them with a crosslinker solution to produce NPs. Compared to microfluidic systems made of PDMS or glass, our chip had better compatibility and facile fabrication. The polymers were synthesized with high monomer conversion and the NP size was found to be influenced by the flow rate ratio between the crosslinker solution and polymer solution. This allowed for the size to be predictably controlled by careful adjustment of the fluid flow rates. The size of the NPs and their stimuli-responses were studied using DLS and SEM imaging. This microfluidic chip design can potentially streamline and provide some automation for the bottom-up synthesis of polymer NPs while offering on-demand size control. © 2024 The Royal Society of Chemistry.

关键词： Microfluidic chips

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