Environmental Monitoring system has become more and more critical for biological protection recently. To get timely information from monitored environment, a timely wireless senor network routing scheme (TNRS) is proposed, which is made up of three phrases: initial setup, route discovery and establishment, data communication and route maintenance. In the first phrase, every sensor node will get the initial route table. In the second phrase, source node will find its own path with high fitness value. In the third phrase, data transmission and route maintenance are done under ACK confirmation mechanism. Simulation shows that TNRS routing scheme can decrease data miss ratio by 24.88%, and reduce average data latency by 14.85%, compared to SPEED routing scheme. So TNRS scheme can provide better real time service for environmental monitoring system.
Color constancy is a key metric for evaluating the color reproduction performance. This contribution proposed a color constancy based spectral separation method for muti-ink printers from the prospect of color perception. Basing on our previously developped spectral printer modeling workflow, a novel color constancy based spectral separation method for muti-ink printers was proposed, which achieved high-level color-constant color reproduction.The experiment results shows that the workflow described in the paper not only could makes full use of device gamut, but also improves the comprehensive color constancy performance obviously. Averagely speaking, the Color Inconstancy Index of reproduced colors is reduced from 2.884 △E00 to 2.016 △E00 , while maintaining reasonable spectral and colorimetric reproduction accuracy.
The goal of the work proposed in this dissertation is to develop a new method for the chrominance measurement and predict the spectral reflectance. Since the special feature of the holographic paper, it can reflect rainbow colors when it is in daylight, and the chrominance and the density of reflected light would change along with the observation angle changing, so when ink is printed, the chrominance and the quality of the products are difficult to detect. In this paper, we followed the convention of radiometry, derived the light distribution regular model of the interaction of light when it printed on holographic papers, and derived a new model to detect the chrominance information by changing the illumination condition. Finally, we established a spectral reflectance model by considering on the propagation of light.
Uncertainty evaluation of spectral color measurement is the best method of evaluation of color measurement result’s quality. Firstly type A and type B uncertainty of spectral reflectance are analyzed based on different uncertainty's sources, secondly uncertainty of chromaticity parameters are calculated based on spectral reflectance’s uncertainty. Lastly practicability of uncertainty evaluation of spectral color measurement is proved by experiments.
Objectives: Few studies investigated whether the types of histology had an influence on the postsurgical prognosis for patients 70 years and older with Ⅰ A stage non-small lung cancer (NSCLC). Methods: The study population in our study were obtained from the Surveillance, Epidemiology, and End Results (SEER) Program.Results: A total of 10,376 eligible patients were included in our study. In both lung adenocarcinoma (LUAD) and lung squamous cell carcinoma (LSQCC) patients with TS ≤10 mm, sublobar resection (SR) achieved similar overall survival (OS) (LUAD: HR=0.843, 95% CI (0.673, 1.062), P=0.149; LSQCC: HR=0.799, 95 %CI (0.615, 0.036), P=0.091) and LCSS (LUAD: HR=1.074, 95% CI (0.626, 1.843), P=0.795; LSQCC: HR=0.987, 95 % CI (0.532, 1.833), P=0.967) to lobectomy (LT). For LUAD patients with TS >10 mm &≤20 mm, LT was associated with better OS (HR=0.785, 95% CI (0.703, 878), P<0.001) but not LCSS (HR=0.962, 95% CI (0.766, 1.209), P=0.741); while for LSQCC, LT yielded similar OS (HR=0.864, 95% CI (0.746, 1.005), P=0.051) and LCSS (HR=0.872, 95% CI (0.675, 1.128), P=0.297). LUAD patients with TS>20 mm &≤30 mm received SR were at a significant risk of reduction of OS (HR=0.816, 95% CI (0.709, 0.938), P=0.004) but not LCSS (HR=0.954, 95% CI (0.732, 1.244), P=0.729); while for LSQCC, patients received LT had a better OS (HR=0.742, 95% CI (0.624, 0.883), P<0.001) but not LCSS (HR=0.776, 95% CI (0.563, 1.071), P=0.123). Conclusion: The postsurgical prognosis differed in patients with different histology, and SR maybe acceptable for elderly LUAD patients with TS ≤10 mm and LSQCC patients with TS ≤20 mm.
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