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The effects of Diethyl aminoethyl hexanoate (DAH) on one-step micro-propagation culture with leave, petiole, and root explants were investigated. It was found that adding DAH into basic media increased the one-step culture rates from about less than 40% to more than 50%. For leaf explants, the optimum DAH concentration is 0.08 mg·L-1; petiole, 0.32 mg·L-1, and root explant,...
According to the fundamental mechanisms and recent research results of wind-generated noise, a novel method was proposed that the sea surface wind speed was estimated by using HY-2A microwave scatterometer(HY-2A/SCAT) wind and ocean ambient noise. In this research, the ambient noise data measured by subsurface buoy and HY-2A/SCAT wind in China south sea were selected. The regression analysis was used...
To meet the increasingly stringent regulations on operational efficiencies of electric motors, efforts have been devoted to design and construct motors with less power losses. Without the need of rotor conductors and hence no secondary copper loss, the feasibilities of applying synchronous reluctance motor (SynRM) have attracted many attentions on the related industries. Since the operation of SynRM...
From the perspective of national security, legitimate government agencies have long been committed to enforcing powerful surveillance measures on suspicious individuals or communications. This paper investigates a wireless legitimate surveillance system, where a full-duplex multi-antenna legitimate monitor aims to eavesdrop on a dubious communication link between a suspicious pair via proactive jamming...
This paper utilizes the quantitative feedback theory (QFT) to design a robust controller for adaptive cutting feedrate control. The proposed algorithm could dynamically change the feedrate according to the spindle current which is highly related to the measured cutting force. The QFT controller could provide the constant cutting force even under different cutting condition. Hence, the machining efficiency...
IoT requirements are almost as varied as the Things to which they are applied, but common demands are maximum battery life with minimum system cost and physical volume. Sub-threshold operation is promising, but even a single un-optimized or always-on component can eliminate low-voltage gains elsewhere. This work presents a highly integrated sub-threshold capable ARM based MCU with fully integrated...
A transformerless high step-down DC-DC converter is presented in this paper. The voltage-divider and switched-inductor techniques are employed to achieve high step-down voltage gain for the proposed converter. For the voltage divider, two capacitors with same capacitance are connected to the DC source. For the switched inductor, two inductors with same inductance are in series at the switch ON-period...
A full-bridge single-stage high power-factor charging circuit has accomplished a lithium battery charger. With no extra design effort required, the presented charger possesses Reflex charging function. Unlike the inherited resistive power dissipation of Reflex charging method, the developed circuit transfers the energy from the battery to an inductive component and return to battery later to fulfill...
We consider the multicast channel (MC), in which a transmitter broadcasts only a common message to two receivers. In our previous work, we have derived information-theoretic upper and lower bounds and showed that the two-round receiver cooperation (2RC) scheme, in which the receivers interactively perform compress-forward and then decode-forward, improves the MC achievable rate over different schemes...
This paper considers a multipair amplify-and-forward massive MIMO relaying system with low-resolution ADCs at both the relay and destinations. The channel state information (CSI) at the relay is obtained via pilot training, which is then utilized to perform simple maximum-ratio combining/maximum-ratio transmission processing by the relay. Also, it is assumed that the destinations use statistical CSI...
We try to reconfirm whether the previous findings of online consumer behavior research are consistent with the findings of the current study when we apply Big Data technique to evaluate the same online behaviors mentioned in prior studies. The results indicated that different research methods (e.g., web analytics, online survey) do actually lead to different research findings even though the same...
This paper proposed an enhanced control method for multiple-input converters (MICs). Previously, the control design represents a major difficulty in MIC designs, primarily because MICs are naturally multiple-input-multiple-output (MIMO) control systems. As a result, a complex MIMO controller is generally required for an MIC. The proposed control design approach stands out from conventional ones due...
Aiming to throughput enhancement in future mobile networks, dense deployment of wireless access points (APs) is intended. Spectral efficiency on the uplink can be improved via joint processing of users located in areas covered by several APs. Thanks to centralized processing of such users enabled by Cloud Radio Access Network (C-RAN) architecture, low-latency multi-cell cooperation becomes possible...
The state-dependent K-User Broadcast Channel (BC) with memoryless state feedback is investigated. We propose a novel transmission scheme and derive its corresponding achievable rate region, which, compared to some general schemes that deal with feedback, has the advantage of being simple and thus easy to evaluate. In particular, it is first shown that this scheme achieves the capacity of the Symmetric...
This paper reports a novel flexible neural probe fabricated by cylindrical substrates lithography for Brain-Computer-Interface (BCI) applications. The electrode sites were patterned on the cylindrical surface to acquire high space selectivity and the micro channel was integrated to deliver drags or optical stimulation. The electrode sites of the probe were further modified with graphene enhanced conductive...
Cygames is a company which develops mobile games in Japan. The related game "Granblue Fantasy" is based on lottery mechanisms of "specific unit can be exchanged by certain amount of money consumed" and "specific unit can be exchanged by certain times of lottery". According to consumers' mental states and companies' measures to make profits, this study analyzes the advantages...
This paper focuses on performance evaluation of direct drive high voltage Gallium-Nitride (GaN) devices in a high frequency LLC series resonant converter (LLC-SRC). A comparison between synchronous drive and direct drive high voltage (HV) Cascode GaN device has been made. Zero reverse recovery charge and integrated protections make direct drive HV Cascode GaN device attractive to high frequency LLC-SRCs...
In this paper, we extend the answer for the question: Do the gains from massive MIMO and coded caching cumulate? in a simple setting of downlink MIMO channel with Rayleigh quasi-static fading. Under some practical assumptions, the scalability of massive MIMO and coded caching alone with the number of users does not hold. On the other hand, we show that in this setting, the combination of both provides...
To achieve relatively lower costs and higher operational efficiencies, without adopting permanent magnets or rotor conductors, the synchronous reluctance motor (SynRM) has received more and more attentions as a competitive solution recently. To establish a rational guidance for the related designs and constructions, this paper is aimed to present the thorough performance impact assessments of SynRMs...
In view of the interference type closed-loop fiber optic gyroscope, in the process of digital processing, logic circuit is the key to the whole system. This paper adopts a logic circuit control method based on FPGA. FPGA is used to produce square wave modulation signal with digital phase ladder wave feedback signal through D/A converter, the sum of the input to the gain control circuit, the gain control...
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