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A dual-band millimeter-wave (mmW) dielectric resonator antenna (DRA) in silicon based integrated passive device (IPD) technology for unlicensed V-band (57–64 GHz) and E-band (71–86 GHz) applications is proposed in this paper. In the proposed structure, dielectric resonator (DR) was fed by using vertical coupling feed architecture to improve the antenna efficiency and gains. The simulated results show...
This paper presents a reliable brain-computer interface (BCI) based on a steady-state visually evoked potential (SSEVP) method using online recursive independent component analysis (ORICA) with denoising. The proposed system includes a visual stimulator, a front-end data acquisition module, an ORICA module, a power spectrum density (PSD)-based noise channel detection module, a denoising module, and...
We present balance recovery control of bipedal robotic walkers under foot slip disturbance. A dynamic model is first presented to capture the bipedal locomotion under slip disturbance. Two different control approaches are presented: one is based on the feedback linearization and the second one uses the disturbance observer (DOB) method. The recovery strategies and profiles are designed through linear...
The purpose of this study was to explore China's supply chain integration developing process. We investigated integrative practice of China in recently 10 years. Separate three time periods, and explore evolution of integrative practice. Based on explorative results, further identify for China's supply chain integration developing process. The taxonomy approach is mainly methodology in this study.
This study aims to develop a judgement approach for estimating potential customer demand in the O2O e-commerce environment. The taxonomy used is mainly methodology, and we design it as five steps to explore the topic. According to test results, we identified five types of combinations regarding feedback behaviour in dual channels of the O2O environment. We further analyse the relationships between...
Most existing bipedal dynamics models are built on an assumption of no foot slip. We relax such assumption and present hybrid zero dynamics model and properties for bipedal walking with foot slip. When foot slips, the biped hybrid zero dynamics (HZD) preserve rich features such as high dimensionality and transitions between slip and non-slip dynamics. We present the closed-form of the HZD for human...
We present a balance recovery control design for human walking with foot slip. The control strategy is built on the two-mass linear inverted pendulum model (LIP) that represents the human body and limb motions. We first validate the model through experiments of human normal walking and walking with foot slip. We then design a balance recovery control using the capture point (CP) concept. We extend...
IOMarking method can characterize program-dependent conducted EMI (cEMI). This paper firstly proposes a direct extension for program-dependent near-field EMI (rEMI) behaviors under a complex HW/SW environment. For the program-dependent EMI analysis by IOMarking, sample rate is a major parameter that affects the bandwidth. Due to high sample rate and long program execution time, large amounts of sample...
Understanding users is a key for many business applications. In this paper, we propose to pursue user preference understanding by their Wi-Fi logs collected from their mobile devices. As shown, Wi-Fi data are essentially of various information types and with noises. The challenges lie in how to refine relevant information from noisy Wi-Fi data. Aiming at the challenges, this paper proposes a data...
Nowadays, mobile devices have become a ubiquitous medium supporting various forms of functionality and are widely accepted for commons. In this study, we investigate using Wi-Fi logs from a mobile device to discover user preferences. The core ideas are two folds. First, every Wi-Fi access point is with a network name, normally a human-readable string, called SSID (Service Set Identifier). Since SSIDs...
With substantial progress in Internet of things (IoT), new challenges of EMI on IoT (IoT-EMI) measurement have emerged. The IoT-EMI behaviors are complex and dependent on the target's interactions between hardware and software. A systematic method for IoT-EMI measurement should be developed. However, the characteristics of IoT-EMI are digitally-controlled, time-varying, and software-dependent and...
In recent years, due to the development and advance in information science and technology, people care more about the healthy diet, so diet types gradually change and take more focus on health management. Nowadays, it is becoming an aging society in Taiwan people have irregular life, long-term unhealthy diet, work pressure and other factors to be chronic disease, such as diabetes, hypertension and...
Dynamic modeling of human bipedal walking is important for studying human locomotion and designing assistive and rehabilitation robotic devices. Physical principle-based models and data-driven learning models are two main methods to obtain human walking dynamics. We present analysis and connections between these two different modeling approaches. Mapping and correspondence are established between...
What you see is not definitely believable is not a rare case in the cyber security monitoring. However, due to various tricks of camouflages, such as packing or virutal private network (VPN), detecting "advanced persistent threat"(APT) by only signature based malware detection system becomes more and more intractable. On the other hand, by carefully modeling users' subsequent behaviors of...
The study uses augmented reality (AR) technology to integrate virtual objects into the real learning environment for language learning. The English AR classroom is constructed using the system prototyping method and evaluated by semi-structured in-depth interviews. According to the flow theory by Csikszenmihalyi in 1975 along with the immersive factors from Trevino and Webster in 1992, the proposed...
Slip and fall is one of the major causes for human injuries for elders and professional workers. Real-time detection and prediction of the foot slip is critical for developing effective assistive and rehabilitation devices to prevent falls and train balance disorder patients. This paper presents a novel real-time slip detection and prediction scheme with wearable inertial measurement units (IMUs)...
One of the challenging issues for orthogonal frequency division multiplexing (OFDM) system is high peak-to-average power ratio (PAPR) of the transmitted OFDM signals. Partial transmit sequence (PTS) technique can improve the PAPR statistics of an OFDM signal. However, the major drawback of the conventional PTS (C-PTS) is the high computational complexity. In this paper, we propose the parallel PTS...
This paper establishes a three-layer consumer involvement model for the customers of the Facebook Fan Page of a fashion brand. A series of data mining methodology is proposed, such as data clustering, correlation coefficient and linear regression. To describe three consumer involvements, including advertisement involvement, activity involvement and product involvement, each layer designs a corresponding...
A multifunction test board is designed for a microcontroller (MCU) testing. This board can be used to verify the function of the MCU by running several basic instructions. Furthermore, six different IC-EMC measurements complied with IEC standards can be performed on the same board by careful design and the preservation of test points with certified off-board probes. The experimental results show the...
Slip is the major cause of falls in human locomotion. We present a new bipedal modeling approach to capture and predict human walking locomotion with slips. Compared with the existing bipedal models, the proposed slip walking model includes the human foot rolling effects, the existence of the double-stance gait and active ankle joints. One of the major developments is the relaxation of the nonslip...
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