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Recently, as the evolution of application's development and management paradigms, the deployment declaration becomes a standard interface connecting application developers and Cloud platforms. Kuberenetes is such a system for automating deployment, scaling, and management of micro-service based applications. However, managing and operating such a cloud benefit with additional complexities from the...
For the future fifth generation (5G) communication systems, one of the promising techniques is the massive multiple-input multiple-output (MIMO), which applies hundreds of antenna elements for antenna design. However, how to evaluate a good structure of two-dimensional (2D) antenna array for a specific channel environment in designing massive MIMO systems is still under research. In this paper, we...
When the PD occurs, the charge moves rapidly, producing high-frequency currents while also radiating electromagnetic waves. While the switchgear is a metal closed structure, but also make a partial discharge signal to produce multiple reflections. Usually there is a gap in the surface of the switchgear, electromagnetic waves can leak through the gap to continue in the air and switch cabinet surface...
We propose a WDM and MDM compatible 2×2 switch on a silicon chip. It is composed of mode multiplexers, 2×2 single mode optical switch elements, and mode de-multiplexers. We demonstrate a prototype which can manipulate four spatial modes with broad wavelength span.
We propose a method to optimize the optical switch by substituting some of the switch elements with crossings so that the topology can be simplified and the insertion loss can also be effective minimized. A six-port optical switch prototype is designed and fabricated on silicon.
We demonstrate a silicon PAM-4 optical modulator which is driven by two uncorrelated binary electrical signals with different peak-to-peak voltages. The device can work at 32 Gbaud in the wavelength range from 1525 nm to 1565 nm.
In this paper we demonstrate the 4 level pulse amplitude modulation (PAM-4) signal generation through a silicon Mach-Zehnder modulator. The baud speed of the PAM-4 signal generation is characterized up to 32 Gbaud (64Gb/s). And we have measured the device's bit error rate (BER) up to 32 Gbaud and the spurious free dynamic range (SFDR) of the distortion component of the modulated light.
We demonstrate a silicon PAM-4 optical modulator, which is based on a symmetric Mach-Zehnder interferometer. Two uncorrelated binary electrical signals with different peak-to-peak voltages are applied to the phase shifters of the silicon optical modulator. Accordingly, two different phase shifts are generated in the two arms. After the permutation, there are totally four phase differences between...
We propose a silicon 2×2 optical switch which can simultaneous manipulate wavelength division multiplexing and mode division multiplexing signals. It is composed of broadband mode multiplexers, demultiplexers and single mode optical switch elements. For demonstration, we design and fabricate a prototype device using asymmetric directional coupler and Mach-Zehnder optical switch elements which can...
Uterine contraction is one of the most important indication in the labor progression. Electrohysterogram (EHG) is a promising method for monitoring uterine contraction and discriminating efficient and inefficient contractions. This study aims to analyze the difference of EHG signals between two groups. EHG signals are recorded with abdominal electrodes from 20 pregnant women, including 10 in term...
The aim of this study was to investigate the time difference (TD) between the onset of uterine contraction (UC) determined from tocodynamometry (TOCO) and identified by maternal perception. The online available Icelandic database was used to calculate TD, which was defined as the difference between when it was felt by a pregnant woman and the starting point on the UC signal recorded by a TOCO. A total...
The inability to interpret the model prediction in semantically and visually meaningful ways is a well-known shortcoming of most existing computer-aided diagnosis methods. In this paper, we propose MDNet to establish a direct multimodal mapping between medical images and diagnostic reports that can read images, generate diagnostic reports, retrieve images by symptom descriptions, and visualize attention,...
A merchandized optically pumped Cesium atomic clock has been realized in China recently. This clock was studied and designed under the support from Chinese National Key Scientific Instrument and Equipment Development Project. Experiencing the two steps of principal and engineering prototype, the clock starts to produce in small scale and comprehensively application tests by users. The tests show the...
We demonstrate a four-port optical switch for the photonic network-on-chip architecture, which contains four silicon Mach-Zehnder optical switch elements tuned by the plasma dispersion effect. The optical signal-to-noise ratio of the device is over 10.0 dB in the wavelength range from 1525 nm to 1565 nm. Its 10%–90% rise time and fall time are 2 ns.
End-hopping is an effective component of Moving Target Defense (MTD) by randomly hopping network configuration of host, which is a game changing technique against cyber-attack and can interrupt cyber kill chain in the early stage. In this paper, a novel end-hopping model, Multi End-hopping (MEH), is proposed to exploit the full potentials of MTD techniques by hosts cooperating with others to share...
For TCP-friendly multimedia applications, congestion control may bring about disadvantages such as the variability of sending rate and Round Trip Time although it helps to improve robustness of Internet. Aiming at alleviating this variability and further guaranteeing the user-perceived service quality in the aspect of network layer, this paper proposes a smooth adaptive adjustment mechanism for Random...
On behalf of the Organizing Committee, it is our pleasure to welcome you to the 22nd IEEE/ACM International Symposium on Low Power Electronics and Design (ISLPED 2017) in Taipei, Taiwan. The conference is being held on the beautiful campus of National Taiwan University (NTU) from July 24–26, 2017. Taiwan plays an enormous role in our field of semiconductors, with over 15% of worldwide semiconductors...
Detecting runtime anomalies is very important to monitoring and maintenance of distributed services. People often use execution logs for troubleshooting and problem diagnosis manually, which is time consuming and error-prone. In this paper, we propose an approach for automatic anomaly detection based on logs. We first mine a hybrid graph model that captures normal execution flows inter and intra services,...
Detecting execution anomalies is very important to monitoring and maintenance of cloud systems. People often use execution logs for troubleshooting and problem diagnosis, which is time consuming and error-prone. There is great demand for automatic anomaly detection based on logs. In this paper, we mine a time-weighted control flow graph (TCFG) that captures healthy execution flows of each component...
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