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Two GF-1 WFV images on August 3, 2015 and October 2, 2015 were selected to extract the cultivated area of paddy rice in Jianhu county of Jiangsu Province. Vegetation indexes were extracted from the original spectrum data in order to extract paddy rice area with Maximum Likelihood Classifier (MLC), Support Vector Machine (SVM) and Classification and Regression Trees (CART). The extraction accuracy...
Agricultural landscape is designated as important landscape components for partly controlling water quality, biodiversity, as well as for their aesthetic role in landscapes. Therefore, the change of agricultural landscape is at the top of the agenda for many policy makers and landscape planners. As a basis for conservation management, sufficient information about landscape structure should be providing...
The matrix converter (MC) is a direct ac–ac power converter without an intermediate dc link. It has several attractive features, such as high power density, four-quadrant operation, and bidirectional power flow. However, the application of MCs in high-voltage and high-power systems is still limited by the device voltage levels. It is well known that the multilevel power converter technology can be...
User reviews, in the form of short unstructured natural texts, often provide rich information to benefit product adoption or service improvement. Aspect can be extracted as the abstract meaning from the reviews. Traditional methods have employed either rule-based templates or bag-of-words features for aspect extraction from text. However, these models cannot effectively handle short texts, especially...
In this paper, we apply access class barring (ACB) scheme and sparse code multiple access (SCMA) technique to massive machine type communication devices (MTCDs) communications, and propose a resource allocation scheme to increase the number of successful accesses. The proposed scheme employs ACB to control the number of massive random access (RA) attempts during preamble transmission in physical random...
C Language course is a professional basic course of computer science. Explaining the grammatical structure of knowledge points and cultivating students' ability to solve practical application problems should be paid attention to in the teaching of language courses. It is pervasive in C language teaching that it is difficult for students to judge the correctness of the program in real time and students'...
Herein, we developed an in-capillary assay for detecting the self-assembly between histidine containing peptide labeled with ATTO 590 (H4-ATTO) and quantum dots (QDs) using fluorescence coupled capillary electrophoresis (CE-FL). QDs and H4-ATTO were sequentially injected into the capillary, which yielded a new Fluorescence resonance energy transfer (FRET) signal. The efficiency of the self-assembly...
In consideration of the problem of the poor efflciency in traditional classroom teaching owing to the constraint in time and space, a research which combines traditional classroom with E-learning in blended learning is proposed. The software engineering course is chosen and the network platform can serve as an effective instrument for teaching. In our study, the teaching content can be shared in the...
This paper proposed a novel hybrid power converter topology based on cascaded H-bridge (CHB) and matrix converter (MC) in order to improve the performance of the conventional energy management systems in EV/PHEV application. The power demand by the load is supplied by the generator and batteries, which are connected to the primary winding of the medium frequency transformer (MFT) by the matrix converter...
The matrix converter (MC) is direct AC-AC power converter without an intermediate DC link which can offer a number of advantages, including unity input power factor, bidirectional power flow, an improved input current harmonic issue, capable of compact design and high power density without energy storage elements. Above advantages make the matrix converter suitable for aircraft, AC power supply unit...
Research has shown that subjective well-being has two related but distinct dimensions, eudaimonic well-being and hedonic well-being. Hedonic well-being refers to one's overall positive affective experiences, while eudaimonic well-being is related to having a meaningful and noble purpose for life. While people are striving to have a happy and meaningful life, their motivations can be influenced by...
The matrix converter (MC) is an array of controlled bidirectional semi-conductor switches that allows direct ac-ac conversion without an intermediate dc link. To extend its future application, multilevel matrix converter can be a proposed solution due to its merits in multilevel output, high voltage application, high power conversion, improved harmonics issue and less voltage step, etc. This paper...
Soil diagnostic horizon (SDH) in Chinese soil taxonomy (CST) is a representative feature for one soil type, the determination of SDH type is critical for soil classification. Usually, it is done by experts of soil classification with key rules in CST, but the amount of expert is far insufficient for SDH determination in future soil survey. Hence this paper presents a case-based reasoning (CBR) method...
Soil macropores are the main migration passage for water and air in soil. Their existence in soil with proper quantity can enhance soil permeability, improve rhizospheric environment, and increase water retention capacity. But excessive soil macropores will result in a waste of rainfall and irrigation water, loss of soil nutrient and fertilizer, and pollution of ground water. It is necessary to know...
Approved energy savings accurately is the key to the success of energy performance contracting(EPC) . Using the manual calculation and software simulation to the approved energy savings is the most energy-saving units' method used, but the accuracy of its approved is unknown. A government office building in Beijing in energy-saving projects of """"Eleventh Five-Year Plan"...
In this paper, the effects of antenna element mutual coupling on MIMO system in a three dimensional multipath channel, are derived. Mutual coupling between elements of ULA, UCA and URA, which influences both the spatial correlation and received signal to ratio(SNR), is taken into account by means of the impedance matrix. The general spatial correlation expressions of channel model with the impact...
This paper describes a self-priming compartmentalization (SPC) microfluidic digital loop-mediated amplification (dLAMP) chip for performing single molecule detection, which is power-free, valve-free, isothermal, inexpensive, sensitive, economizing labor time and reagent.
In order to effectively improve the heat utilization of solar energy, by the convection heat transfer field synergy theory, this paper studies a solar wall air heating system, analysis the flow velocity field and temperature field of the solar wall channel, and calculation the variation rules of temperature gradient direction within the channel and air flow velocity (speed ratio) with the field synergy...
Through simulating the process of energy storage heating floor contain phase change material (PCM), the action and function of PCM in building energy storage are discussed. Analysis and numerical simulation the energy storage process in building structure with PCM packaging module, discussion the relation of temperature distribution, heat condition, energy storage and discharge time and PCM efficiency...
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