本文在去掉lim inf||x_n||<∞,sum from n=0 to ∞(k_n-1)<∞条件下,并用α_n→0(n→∞)取代sum from n=0 to ∞α_n^2<∞,使用新的分析技巧,在赋范线性空间中建立了一致Lipschitz的渐近拟伪压缩型映象公共不动点的修改的广义I...本文在去掉lim inf||x_n||<∞,sum from n=0 to ∞(k_n-1)<∞条件下,并用α_n→0(n→∞)取代sum from n=0 to ∞α_n^2<∞,使用新的分析技巧,在赋范线性空间中建立了一致Lipschitz的渐近拟伪压缩型映象公共不动点的修改的广义Ishikawa迭代序列的强收敛定理,从而本质改进和推广了唐玉超,刘理蔚新近的结果.展开更多
FENG Jiang ① ZHANG Shu\|Yi ② LI Zhen\|Xin ①② SHENG Lian\|Xi ① WANG Li\|Xin ③) (①Environmental Science Department, Northeast Normal University, Changchun 130024, China) (②Institute of Zoology, The Chinese Acade...FENG Jiang ① ZHANG Shu\|Yi ② LI Zhen\|Xin ①② SHENG Lian\|Xi ① WANG Li\|Xin ③) (①Environmental Science Department, Northeast Normal University, Changchun 130024, China) (②Institute of Zoology, The Chinese Academy of Sciences, Beijing 100080, China) (③Psychology Department, Beijing Normal University, Beijing 100875, China)展开更多
The relationship between echolocation frequency (represented by dominant frequency, DF for short) and body size (body mass, forearm length and body length) in 8 species of horseshoe bats ( Rhinolophus cornutus, R. aff...The relationship between echolocation frequency (represented by dominant frequency, DF for short) and body size (body mass, forearm length and body length) in 8 species of horseshoe bats ( Rhinolophus cornutus, R. affinis, R. thomasi, R. rouxi, R. blythii, R. ferrumequinum, R. pearsoni, R. rex ) was examined. The eight species were captured in caves in five regions (Guiyang, Anlong, Xingyi, Anshun and Zhenning) of Guizhou Province in July and August 1999 and June 2000. The species were identified based on the descriptions in Mammals of GuiZhou (Luo et al .)and Key to the Identification of Chiroptera (Wang, unpublished). The bats were captured at the entrance to the caves at about 8 pm (the time when bats usually leave the caves), and were then put into a recording room near the capture locations where they could fly freely. Recordings of their echolocation calls were made bout 2 hours later using an ultra sound detector (U30, Ultra Sound Advice, UK) which recorded the calls of bats that were flying directly at the microphone at a distance of 1 m. Each bat was recorded 5 times and the signals were fed into a portable ultra sound processor (PUSP, Ultra Sound Advice, UK). The duration for recording was 1 1 s with a sampling frequency of 44 1 kHz. By replaying the recorded tapes the best quality recordings (the loudest and clearest with the least background noise) were replayed at 1/10 speed and re recorded using a digital sound recorder (Sony, MD 1, frequency response range: 30～20 000 Hz). The re recorded echolocation signals were analyzed using the sound processing software Cool Edit 2000, developed by the American Syntrillium Software Company. Ultra sound analysis referred to the sound spectrograms (frequency time graph), time domain spectrograms (energy time graph), energy spectrograms (energy frequency graph), and Hanning window to obtain an analytic precision of 256 Hz. The analysis attenuation was 60 dB. The DF, pulse duration and interpulse interval of the echolocation calls were recorded and the duty cycle展开更多
文摘本文在去掉lim inf||x_n||<∞,sum from n=0 to ∞(k_n-1)<∞条件下,并用α_n→0(n→∞)取代sum from n=0 to ∞α_n^2<∞,使用新的分析技巧,在赋范线性空间中建立了一致Lipschitz的渐近拟伪压缩型映象公共不动点的修改的广义Ishikawa迭代序列的强收敛定理,从而本质改进和推广了唐玉超,刘理蔚新近的结果.
文摘FENG Jiang ① ZHANG Shu\|Yi ② LI Zhen\|Xin ①② SHENG Lian\|Xi ① WANG Li\|Xin ③) (①Environmental Science Department, Northeast Normal University, Changchun 130024, China) (②Institute of Zoology, The Chinese Academy of Sciences, Beijing 100080, China) (③Psychology Department, Beijing Normal University, Beijing 100875, China)
文摘The relationship between echolocation frequency (represented by dominant frequency, DF for short) and body size (body mass, forearm length and body length) in 8 species of horseshoe bats ( Rhinolophus cornutus, R. affinis, R. thomasi, R. rouxi, R. blythii, R. ferrumequinum, R. pearsoni, R. rex ) was examined. The eight species were captured in caves in five regions (Guiyang, Anlong, Xingyi, Anshun and Zhenning) of Guizhou Province in July and August 1999 and June 2000. The species were identified based on the descriptions in Mammals of GuiZhou (Luo et al .)and Key to the Identification of Chiroptera (Wang, unpublished). The bats were captured at the entrance to the caves at about 8 pm (the time when bats usually leave the caves), and were then put into a recording room near the capture locations where they could fly freely. Recordings of their echolocation calls were made bout 2 hours later using an ultra sound detector (U30, Ultra Sound Advice, UK) which recorded the calls of bats that were flying directly at the microphone at a distance of 1 m. Each bat was recorded 5 times and the signals were fed into a portable ultra sound processor (PUSP, Ultra Sound Advice, UK). The duration for recording was 1 1 s with a sampling frequency of 44 1 kHz. By replaying the recorded tapes the best quality recordings (the loudest and clearest with the least background noise) were replayed at 1/10 speed and re recorded using a digital sound recorder (Sony, MD 1, frequency response range: 30～20 000 Hz). The re recorded echolocation signals were analyzed using the sound processing software Cool Edit 2000, developed by the American Syntrillium Software Company. Ultra sound analysis referred to the sound spectrograms (frequency time graph), time domain spectrograms (energy time graph), energy spectrograms (energy frequency graph), and Hanning window to obtain an analytic precision of 256 Hz. The analysis attenuation was 60 dB. The DF, pulse duration and interpulse interval of the echolocation calls were recorded and the duty cycle
