A new method of lower extremity immobilization in radiotherapy

We developed a new method for immobilization of the fix lower extremities by using a thermoplastic mask, a carbon fiber base plate, a customized headrest, and an adjustable angle holder. The lower extremities of 11 patients with lower extremity tumors were immobilized by this method. CT simulation was performed for each patient. For all 11 patients, the device fit was suitable and comfortable and had good reproducibility, which was proven in daily radiotherapy

FIGURE 4 in Vappolotes, a new genus of coelotine spiders (Araneae, Agelenidae) from Guizhou, China

FIGURE 4. Epigynum and habitus of Vappolotes jianpingensis sp. n. A, Epigynum, ventral; B, Internal genitalia, dorsal; C, Female habitus, dorsal; D, Female habitus, ventral; E, Female habitus, lateral. Scale bars: equal for A and B, equal for C, D and E.Published as part of <i>Li, Bing, Zhao, Zhe, Chen, Yuanxue, Chen, Haifeng, Wu, Zhiyan & Li, Shuqiang, 2019, Vappolotes, a new genus of coelotine spiders (Araneae, Agelenidae) from Guizhou, China, pp. 434-442 in Zootaxa 4701 (5)</i> on page 439, DOI: 10.11646/zootaxa.4701.5.3, <a href="http://zenodo.org/record/3559385">http://zenodo.org/record/3559385</a&gt

FIGURE 3 in Vappolotes, a new genus of coelotine spiders (Araneae, Agelenidae) from Guizhou, China

FIGURE 3. Epigynum and habitus of Vappolotes ganlongensis sp. n. A, Epigynum, ventral; B, Internal genitalia, dorsal; C, Male habitus, dorsal; D, Female habitus, dorsal; E, Female habitus, ventral. Scale bars: equal for A and B, equal for C, D and E.Published as part of <i>Li, Bing, Zhao, Zhe, Chen, Yuanxue, Chen, Haifeng, Wu, Zhiyan & Li, Shuqiang, 2019, Vappolotes, a new genus of coelotine spiders (Araneae, Agelenidae) from Guizhou, China, pp. 434-442 in Zootaxa 4701 (5)</i> on page 438, DOI: 10.11646/zootaxa.4701.5.3, <a href="http://zenodo.org/record/3559385">http://zenodo.org/record/3559385</a&gt

FIGURE 2 in Vappolotes, a new genus of coelotine spiders (Araneae, Agelenidae) from Guizhou, China

FIGURE 2. Left male palp of Vappolotes ganlongensis sp. n. A, Prolateral view; B, Ventral view; C, Retrolateral view. Scale bar: equal for A, B and C.Published as part of <i>Li, Bing, Zhao, Zhe, Chen, Yuanxue, Chen, Haifeng, Wu, Zhiyan & Li, Shuqiang, 2019, Vappolotes, a new genus of coelotine spiders (Araneae, Agelenidae) from Guizhou, China, pp. 434-442 in Zootaxa 4701 (5)</i> on page 437, DOI: 10.11646/zootaxa.4701.5.3, <a href="http://zenodo.org/record/3559385">http://zenodo.org/record/3559385</a&gt

Area Spectral Efficiency and Area Energy Efficiency of Massive MIMO Cellular Systems

This paper investigates the performance of massive multiple input multiple output (MIMO) cellular systems with pilot contamination. We derive a closed-form approximation of the area spectral efficiency (ASE) for uplink multi-cell multiuser massive MIMO systems by using an uniformly distributed user location model. Considering a practical power consumption model, we obtain the area energy efficiency (AEE) in a cell. The theoretical results of ASE and AEE can be used to investigate some system parameters of massive MIMO cellular system, such as the number of antennas at the base station, the number of users, and the number of symbols over which the channel remains constant. We also study the optimal pilot-to-data power ratio (PDPR) for both ASE maximization and AEE maximization

Reforming China’s Pension Scheme for Urban Workers: Liquidity Gap and Policies’ Effects Forecasting

This study forecasts the liquidity gap in China’s pension scheme for urban workers in the context of an ageing population and the possible effects of recent governmental policies by constructing a basic pension model, including “old people”, “middle people” and “new people” and a simulation method. We find, firstly, that China’s liquidity gap of pension will reach its peak of approximately 13.11 trillion yuan in 2038. Subsequently, this gap will gradually decrease with growth in the mortality rate. Secondly, reasonable intervals for the replacement and contribution rates should be set at [0.417, 0.604] and [0.189, 0.262], respectively, to sustain China’s pension system. Thirdly, compared to increasing fiscal subsidies, an income doubling plan, raising the contribution rate, lowering the replacement rate and delaying the retirement age can significantly reduce the liquidity gap, although the policy costs are relatively high. A policy permitting families to have two children will increase the rate of reduction of the liquidity gap, but it cannot effectively narrow the gap at the peak moment

Vappolotes, a new genus of coelotine spiders (Araneae, Agelenidae) from Guizhou, China

Li, Bing, Zhao, Zhe, Chen, Yuanxue, Chen, Haifeng, Wu, Zhiyan, Li, Shuqiang (2019): Vappolotes, a new genus of coelotine spiders (Araneae, Agelenidae) from Guizhou, China. Zootaxa 4701 (5): 434-442, DOI: 10.11646/zootaxa.4701.5.