Location-Based LTE-M Uplink Power Control and Radio Resource Scheduling

Long-Term Evolution for Metro (LTE-M) is adopted as the data communication system in urban rail transit to exchange bio-direction train-wayside information. Reliable data communication is essential in LTE-M systems for ensuring trains’ operation safety and efficiency. However, the inter-cell inference problem exists in LTE results in throughput reduction, especially when trains are in the edge area of adjacent cells, and has negative effects on train operation. The uplink power control and radio resource scheduling scheme is studied in LTE-M system which differentiates from public cellular networks in user numbers and the availability of the trains’ locations. Since the locations of the trains are available, the interferences from the neighbouring cells can be calculated, and a location based algorithm together with soft frequency reuse is designed. In addition, a proportional fair algorithm is taken to improve uplink radio resource scheduling considering the fairness to different train-wayside communication service requirements. Through simulation, the practicability of the proposed schemes in communication system of urban rail transit is verified in aspects of radio power control and data communication throughput

Four new species of genus Amynthas (Oligochaeta, Megascolecidae) from Hainan Island, China

International audienceFour new earthworm species of the genus Amynthas are described from Hainan Island, China. They are Amynthas endophilus sp. nov., Amynthas fluviatilis sp. nov., Amynthas fucatus sp. nov. and Amynthas apapillatus sp. nov. Amynthas apapillatus sp. nov. has three spermathecal pores in 6/7-8/9 while the other three new species have two pairs of spermathecal pores in 5/6-6/7. Their anatomical and morphological characteristics are compared to similar species from Hainan Island, China mainland and South-East Asia. Furthermore, COI and 16S gene sequences of these new species are submitted to NCBI

Three new species of earthworms belonging to the genera Amynthas and Metaphire (Oligochaeta: Megascolecidae) from Yunnanı China

Yuan, Zhu, Dong, Yan, Jiang, Jibao, Qiu, Jiangping (2019): Three new species of earthworms belonging to the genera Amynthas and Metaphire (Oligochaeta: Megascolecidae) from Yunnanı China. Journal of Natural History 53 (31): 1961-1974, DOI: 10.1080/00222933.2019.168076

Population Genetic Structure and Diversity of Metaphire remanens (Oligochaeta: Megascolecidae) Based on Mitochondrial DNA Analysis, with a Note on a New Species of Metaphire remanens sp. nov.

Metaphire remanens sp. nov. is widely distributed throughout Hunan Province, China. We sequenced the mitochondrial DNA to investigate its population genetic structure and genetic diversity, including cytochrome c oxidase subunit I, cytochrome c oxidase subunit II, 12S ribosomal (r)RNA, 16S rRNA, and nicotinamide adenine dinucleotide dehydrogenase subunit 1, derived from 39 individuals from seven geographic locations in Hunan Province. The genetic diversity indices showed that populations of M. remanens have a strong genetic structure and obvious dispersal histories. M. remanens did not experience population expansion, except in Xiangtan City. This may be because of its evolution toward parthenogenesis. The divergence time estimates indicated that M. remanens originated at 19.2055 Ma and then generated two main lineages at 1.7334 Ma (Quaternary glaciation). These results indicate that glaciation, geographic isolation, and dispersal ability are significant factors that influence the differentiation and dispersal of M. remanens. In this study, we describe Metaphire remanens sp. nov. in morphology

Four new earthworm species and subspecies belonging to genus Amynthas and Metaphire (Oligochaeta: Megascolecidae) from Hainan Island, China

Zhao, Qi, Jiang, Jibao, Sun, Jing, Qiu, Jiangping (2013): Four new earthworm species and subspecies belonging to genus Amynthas and Metaphire (Oligochaeta: Megascolecidae) from Hainan Island, China. Zootaxa 3619 (3): 383-393, DOI: 10.11646/zootaxa.3619.3.

Two new species of earthworms belonging to the genus Amynthas (Oligochaeta: Megascolecidae) from Guangxi Province, China

Dong, Yan, Yuan, Zhu, Jiang, Jibao, Zhao, Qi, Qiu, Jiangping (2018): Two new species of earthworms belonging to the genus Amynthas (Oligochaeta: Megascolecidae) from Guangxi Province, China. Zootaxa 4496 (1): 259-268, DOI: https://doi.org/10.11646/zootaxa.4496.1.2

Three new species and one subspecies of the Amynthas corticis-group from Guangxi Zhuang Autonomous Region, China (Oligochaeta, Megascolecidae)

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