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With an increase in the population of older adults, the number of cases with dementia also increases. People living with dementia (PLwD) exhibit various behavioral and psychological experiences; agitation and aggression being the most common. Aggressive patients with dementia can harm themselves, other patients and the staff. In the past, researchers have used actigraphy to detect incidences of agitation...
We exploit ultrafast extreme-UV angle-resolved photoemission spectroscopy (XUV ARPES) for sensitive studies of non-equilibrium carrier dynamics in MoSe2. The experiments reveal inter-valley scattering and provide first evidence for the observation of band-gap excitons in ARPES.
We demonstrate an all-optical 4He magnetometer driven by fictitious oscillating magnetic field achieved by the light shift. The intensity modulated detuning light creates the fictitious oscillating magnetic field to resonate with the Larmor precession.
Increasing process variation and logic delay can significantly degrade the write-ability of near-threshold SRAM cells. In this paper, taking 8-T cell as an example, a transient NBL scheme is adopted to improve the write-ability of SRAM by using a transient negative bit-line voltage at the start of the word-line pulse without complicated on-chip control circuits, which greatly simplifies the design...
The Altimeters have been more and more used in ocean forecast. They have been used not only in ocean forecast validation but also be assimilated in ocean forecast model. Since August 2011, the HY-2 satellite has been launched successfully, and now it has been used in ocean wave model. This paper is armed to use the Jason-2 altimeter significant wave height (SWH) data to validate the accuracy of wave...
Massive number of devices must operate for a long time with very limited chance to contact energy sources in current Machine-to-Machine (M2M) network, so power saving mechanism is very essential. In this paper, we analyze energy efficiency of Contention Tree Algorithm(CTA), which is one popular contention based data transmission method currently, and propose one enhanced CTA: Power Saving CTA(PS_CTA)...
Representative distribution of body shapes is needed when simulating crowds in real-world situations, e.g., for city or event planning. Visual realism and plausibility are often also required for visualization purposes, while these are the top criteria for crowds in entertainment applications such as games and movie production. Therefore, achieving representative and visually plausible body-shape...
In this paper, we study the problem of refining a standard cell placement for self-aligned double patterning (SADP), which asks to simultaneously refine a detailed placement and find a valid SADP layout decomposition such that both overlay violation and wirelength are as small as possible. We first present an algorithm that adopts the technique of white space insertion for an SADP-aware single-row...
Kernel independent component analysis (KICA) detects primary independent components of data by minimizing kernelized canonical correlation of random variables in a reproducing kernel Hilbert space. KICA has been widely used in many practical tasks, e.g., blind source separation and speech recognition. However, the dense kernel matrix in traditional KICA causes high computational complexity which prohibits...
Single Phase Flux Switching Reluctance Motor(SPFSRM) is a new class doubly-salient brushless motor, which is emerging in recent years. To accurately describe the electromagnetic characteristics of FSM, the high rank continuous nonlinear inductance function was formulated based on the method of Fourier expansion and numeric fitting. A 2kW 8/4 pole prototype FSM was designed and the experiment was done...
This paper presents a low cost but high power density tubular linear switch reluctance generator (TLSRG) with ring segments for Direct Drive Marine Wave Energy Conversion (WEC). The ring segments are both magnetically and electrically isolated with each other increasing the capability of flux carrying and the power density. The performance characteristics at generator mode are discussed in this paper,...
Isolated attosecond pulses are powerful tools for exploring electron dynamics in matter. We proposed and demonstrated a technique called generalized double optical gating for generating isolated attosecond pulses. The double optical gating scheme, relaxing the stringent requirement on laser pulse duration from ≤ 5 fs to pulse duration close to the amplifier output, would make attophysics more accessible...
Study on accelerated life test scheme is conducted according to the life test load spectrum of a certain type of air turbine starter. Through comparison and analysis of the failure modes and durability simulation results of the air turbine starter, the study identifies the main component failure mechanism of the air turbine starter. Based on the failure mechanism derived from analysis, and with the...
This paper presents a new yokeless Linear Switch Reluctance Machine (LSRM) for Urban Rail Transit System (URTS) which primary and secondary sides both feature modular structure. The primary side consists of independent cores of different width with the bigger core wound by a simple concentric winding while the smaller core remains unwound. The secondary, i.e. the stator of the LSRM includes series...
This paper is focused on an effective DC voltage control strategy of the VSC-MTDC system which is based on the optimal AC/DC power flow (OPF) procedure. In this system, a multi-objective OPF algorithm is executed at the first of the VSC-MTDC system to find the optimal reference values for the active power and the dc voltages of the voltage-regulating converters. The reference values are used to combine...
A seamless switching control strategy for multi-terminal flexible HVDC system, presented in this paper, can maintain DC voltage of system stable and ensure a reasonable power allocation of converter stations. This strategy improves active channels of the outer loop, which enhances flexibility and selectivity of control by setting droop control mode cover fixed DC voltage control mode and constant...
In the AC/DC hybrid system consisting MMC-HVDC, it needs the distance relay zone 2 or stage III of higher AC line action to remove fault when the protection for lower level AC line which is directly connected with the MMC-HVDC cannot correctly remove fault. The changes of MMC-HVDC operation mode will result that the scope of higher line distance relay zone 2 is narrowed. It has a great probability...
Crossing swell, is a complicated sea state characterized by the co-existence of swell systems generating from different sources. Although many investigations have focused on the global swell climatology, our understanding of global statistical distribution for the crossing swell is still limited so far. In this paper, we present a global view of crossing swell using 10-years Synthetic Aperture Radar...
French-Indo joint mission SARAL/AltiKa is the first space-borne altimeter operating at Ka-band, which is expected to obtain finer resolution ocean surface wind speed and significant wave height (SWH) measurements particularly in coastal areas compared to the traditional Ku-band altimeters. In this paper, we present the preliminary validation results for the SARAL/AltiKa coastal SWH and wind speed...
Since August 2011, the HY-2 satellite has been launched successfully, and it has provided almost continuous wave height measurements for more than 4 years. Before using these data, the measurements need to be validated. Based on the in-situ buoys from the National Data Buoy Center (NDBC) and Jason-2 altimeter, the HY-2 Ku-band significant wave height (SWH) measurements were validated and have been...
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