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This letter proposes a new business model for distribution network operators (DNOs)—shared network access (SNA), aiming to integrate flexible demand in a cost-effective manner. The SNA scheme incentivises the incumbent DNOs to give up its exclusive access to the network, leasing the spare capacity or back up capacity to a licensed independent party. The ownership of assets will be retained by the...
By using a virtual campus, users can not only immerse in the campus scene, but also interact with the system, which helps them understand the campus rapidly and deeply. But the virtual campus itself doesn't provide the relevant data information of the campus scene, which severely limits its application to a certain extent. To solve this problem, oriented to Beijing Institute of Petrochemical Technology...
A transparent cold cathode panel was fabricated and applied in a double-side emitting light source using ZnO nanowire field emitter arrays(FEAs). ITO thin film coating on starting Zn film was adopted to modify the morphology and field-emission properties of ZnO nanowires. The transparent ZnO nanowire cold cathode panel shows more than 84.7% transmission in the visible light region. A fully sealed...
Using the ZnO nanowire emitters with the photoconductor as the anode, the concept of a light-responsive field emission display (FED) was demonstrated. The brightness of display can be automatically increased with the increasing of external light-intensity. Additionally, the photo/dark current ratio can be controllably adjusted by changing the device parameters. The response of conductivity of photoconductor...
ZnO nanowire field emitter arrays with non-coplanar focus electrode structure was designed. A simulation was conducted to verified the focusing ability of the focus electrode structure. The designed structure was realized successfully and the growth condition of ZnO nanowires in the structure was studied.
A transmission anode flat panel X-ray source with the ZnO nanowire field emitter arrays(FEAs) has been realized. The thickness of the transmission-type flat panel X-ray target has been optimized to maximize the output intensity of X-rays. The EGSnrc-based Monte Carlo codes are utilized to simulate the X-ray intensity and spectrum generated from the target. The simulation results show that the target...
ZnO nanowires have potential applications as large area field emitters for plat panel x-ray source and high emission current is needed for such application. In this study, patterned ZnO nanowires with different separations have been fabricated on ITO coated glass substrate by thermal oxidation technique. It is found that the separation of the patterns affects the growth of ZnO nanowires. The field...
Amorphous indium-gallium-zinc-oxide thin film transistor (a-IGZO TFT) was used as active driving device for ZnO nanowire field emitters. The characteristics of ZnO FEAs controlled by a-IGZO TFT were studied. Low driving voltage, precise control and stabilization of field emission current are achieved.
Fluorine doping of ZnO nanowires was realized by using a biased CF4 plasma treatment. The morphology, work function, electrical characteristics and field emission properties of ZnO nanowires were investigated before and after CF4 plasma treatment. Though lowered work function and resistance were observed, the ZnO nanowires exhibit higher turn-on field after CF4 plasma treatment. The results were explained...
The feasibility of preparation of nanowire on glass favors the realization of large area devices, which makes nanowire field emitter arrays (FEAs) good candidate for large-area vacuum microelectronics applications. In this study, a coaxial gated ZnO nanowire FEAs was fabricated. Effective emission current modulation by the gate voltage was achieved and the addressing capability was demonstrated.
The ability to recognize physical activity, such as sedentary, driving, riding, daily activities and effective training, is useful for health conscious users to catalogue their daily activities and to develop good exercise routines. Conventional activity recognition algorithms require complex calculations, which are not suitable for wearable devices developed on low-cost, low-power hardware platforms...
This paper provides a view to Peer-to-Peer (P2P) approach for smart grid operation adopted in P2P-SmarTest project. It provides an overview on solutions proposed for distributed P2P energy trading, P2P grid control and wireless communication enabling the proposed P2P operation. The paper proposes some business models that can be adopted in a P2P setting. We also outline the barriers and enablers against...
This paper proposes a CNN (Convolutional neural network) based blood vessel segmentation algorithm. Each pixel with its neighbors of the fundus image is checked by the CNN. The preliminary segmentation results of fundus images were refined by a two stages binarization and a morphological operation successively. The algorithm was tested on DRIVE dataset. While the specificity is 0.9603, sensitivity...
Fundus image is important for the medical screening and diagnosis of variety ophthalmopathy. The effectiveness of such a process, however, depends very much on the quality of the fundus image captured. This paper aims to asses in real-time the quality of a fundus image by first extracting a multitude of generic features, including statistical characteristics, entropy, texture, symmetry, frequency...
Item-based collaborative filtering (IBCF) is an important technology that is widely used in recommender system. It uses historical information to compute item-item similarity and make rating predictions. However, current IBCF approaches have a problem in that all items are accorded the same weight when computing the similarity and making predictions. To improve the quality of recommendations made...
Transparent gate-structured field emitter arrays (FEAs) using ZnO nanowire cold cathode were fabricated. By using indium tin oxide(ITO) as the materials for both the cathode and gate electrode, the ZnO nanowire FEAs shows more than 76% transmission in the visible light region. Such transparent FEAs have potential applications in double-sided field emission display.
Amorphous indium-gallium-zinc-oxide thin film transistor (a-IGZO TFT) with offset structure is fabricated for active-driving of ZnO nanowire field emitters. ZnO nanowire field emitters grown by thermal oxidation method is integrated with the a-IGZO TFT. The results proved that the growth process of ZnO nanowires is compatible with the a-IGZO TFT fabrication process.
For application in a diode flat-panel X-ray source, large area patterned WO3 nanowires were grow on indium-tin-oxide (ITO) glass substrate by using a thermal oxidation method. It is found that the thickness of the ITO layer influences the length of the prepared WO3 nanowires. The phenomenon is attributed to the change of stress of the ITO glass substrate. The field emission properties of WO3 nanowires...
ZnO nanowire field emitter arrays with self-aligned focus electrode were designed. The simulation of the electron trajectory verified the focusing characteristics of designed structure. The ZnO nanowire field emitter arrays were successfully fabricated and the addressing operation was realized.
Patterned tungsten oxide (WO3) nanowires are grown on ITO glass substrate by a thermal oxidation without any catalyst. Field emission measurements show that the field emission current of WO3 nanowires can be dramatically enhanced by a conditioning process. After conditioning, the turn-on voltage of the WO3 nanowires decreases from 6.50 MV/m to 3.28 MV/m. The phenomenon is related the oxygen adsorbate...
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