Fabrication of micro-honeycomb ceramics by cloth fabric pore-forming

Micro-honeycomb ceramics were successfully fabricated through brush-coating with cloth fabric as pore-forming agent. The influence of pore-forming agent and slurry’s moisture content on the micro-honeycomb ceramics was investigated. The results indicated that micro-honeycomb ceramics made from pore-forming agent cloth fabric with fibre diameter of 100 μm and slurry with 45% （mass fraction） moisture content have the porosity of 65% （volume fraction）, bending strength of 24.3 MPa, pore size of about 100 μm, cell wall thickness of about 50 μm and porosity of 1131 pore/cm2. It was suggested that the pore size and the porosity could be adjusted using the pore-forming agent and moisture content of the slurry respectively.

Ataxonomic study of the genera Alamella and Cryptanusia (Hymenoptera: Encyrtidae) in China

This paper treats two genera Alamella Agarwal and Cryptanusia Girault, which belong to the subfamily Tetracneminae in the family Encyrtidae. Alamella maai Noyes Hayat and Cryptanusia taiwanus Chen Chen are described and photomicrographs are provided to illustrate morphological characters of the species. These two species are only known from Taiwan, China, which are new records to Chinese mainland.

First record of gall wasp in Lithocarpus(Fagaceae) with description of a new Saphonecrus species(Hymenoptera:Cynipidae) from China

A new species of inquiline, Saphonecrus lithocarpi sp. nov., is described. This species emerged from leaf gall on Lithocarpus harlandii （Fagaceae）. Diagnosis, distribution, and biology of the new species are included and illustrated. Also a key of Palaearctic Saphonecrus species with pronotal carina is given.

Three new species and a key to species of the Siobla grahami group(Hymenoptera:Tenthredinidae)from China

Three new species,namely Siobla dianzangica Niu&Wei sp.nov.,S.melanogaster Niu&Wei sp.nov.,and S.trilineata Niu&Wei sp.nov.,are described and illustrated.A key to species and distribution maps of the Siobla grahami group are given.

Unconventional Landau Levels of Ultracold Fermionic Atoms on Two-Dimensional Honeycomb Lattice

We investigate the unconventional Landau levels of ultracold fermionic atoms on the two-dimensionalhoneycomb optical lattice subjected to an effective magnetic field,which is created with optical means.In the presenceof the effective magnetic field,the energy spectrum of the unconventional Landau levels is calculated.Furthermore,wepropose to detect the unconventional Landau levels with Bragg scattering techniques.

Modeling and Mining the Temporal Patterns of Service in Cellular Network

Recent emergence of diverse services have led to explosive traffic growth in cellular data networks. Understanding the service dynamics in large cellular networks is important for network design, trouble shooting, quality of service(Qo E) support, and resource allocation. In this paper, we present our study to reveal the distributions and temporal patterns of different services in cellular data network from two different perspectives, namely service request times and service duration. Our study is based on big traffic data, which is parsed to readable records by our Hadoop-based packet parsing platform, captured over a week-long period from a tier-1 mobile operator's network in China. We propose a Zipf's ranked model to characterize the distributions of traffic volume, packet, request times and duration of cellular services. Two-stage method(Self-Organizing Map combined with kmeans) is first used to cluster time series of service into four request patterns and three duration patterns. These seven patterns are combined together to better understand the fine-grained temporal patterns of service in cellular network. Results of our distribution models and temporal patterns present cellular network operators with a better understanding of the request and duration characteristics of service, which of great importance in network design, service generation and resource allocation.