Two new species of Bonnetina tarantulas (Theraphosidae: Theraphosinae) from Mexico: contributions to morphological nomenclature and molecular characterization of types

Two new species of tarantulas from Mexico are described and illustrated: Bonnetina tenuiverpis and Bonnetina juxtantricola, from the states of Mexico and Guerrero, respectively. Male palpal bulbs, tibial apophyses and spermatheca are among the most taxonomically informative characters. Male bulb microstructure is revealed from scanning electron microscopy; both new and homologous structures to other Theraphosinae genera are identified and described. Nomenclatural changes for male tibial apophyses are also proposed. The holotype male and allotype female of one of the species are molecularly characterized and matched from CO1 partial sequence.

http://zoobank.org/urn:lsid:zoobank.org:pub:BBDBBEDE-6983-4F5C-B34C-4622DF494C84     

Bird community characteristics as indicators of sustainable management in olive grove ecosystems of Central Greece

The role of breeding birds as indicators of sustainable management in olive groves was investigated. The data revealed significantly higher alpha diversity in organic and abandoned olive groves and maquis than in conventional ones. The highest beta diversity was found between the following pairs: organic olive groves–maquis, and abandoned olive groves–maquis. Breeding bird diversity, Heteroptera, Hymenoptera, Hemiptera and Coleoptera densities positively influenced bird species richness in organic olive groves and maquis, and additionally, manure application positively influenced bird species richness in organic ones. Bird species richness was negatively influenced by pesticide and inorganic fertilizer application in conventional ones. Moreover, isopod density was unimportant in explaining breeding bird richness in organic olive groves. Finally, our study suggests a difference in bird communities of various olive groves as a result of different management and practices, and concludes that birds might serve as indicators of overall olive grove health. Furthermore, these findings could be used as a tool for prediction of breeding bird species richness probability in different olive grove management systems and maquis. Finally, the results of the present study may contribute to highlighting some aspects of the effect of different farming practices on the dynamics of Mediterranean bird communities.     

The localities of Arctic Diptera (Insecta) collected by the Russian Kara Expedition of 1909

One of the most important journeys of exploration to Arctic Russia was the so-called 1909 Kara Expedition, to the polar area north of the Ural Mountains. Among the scientific papers resulting from this expedition, that on the Diptera gives only the vaguest locality data, such as ‘Kara tundra’ or ‘polar Urals’, with a date. From the separately published Russian expedition narrative, we present a table giving the day-by-day stops of the expedition, so far as possible with named localities and coordinates. As a result, localities, and especially type-localities of new species, can be precisely located for the Diptera and for other taxonomic groups.     

Muhaka icipe,an enigmatic new genus and species of Kleidotomini (Hymenoptera: Figitidae: Eucoilinae) from an East African coastal forest

A remarkable new eucoiline genus and species, Muhaka icipe, is described herein. The genus is clearly a Kleidotomini, but is distinguished from other genera in the tribe by a unique head and scutellar morphology. The genus belongs to the ‘wedge-head’-syndrome group of species that, to date, is unique to Afrotropical eucoilines. The new genus and species is reminiscent of Stentorceps Quinlan and Nanocthulhu Buffington, but is readily distinguished from these genera. Muhaka was collected from a threatened kaya (sacred forest) of coastal Kenya. The biological importance of this and other kaya forests, as well as their protection, is discussed.

http://www.zoobank.org/urn:lsid:zoobank.org:pub:6918ED2C-69A4-48FC-A1E4-2B5DFF58E876     

Cascading failure of complex networks based on load local preferential redistribution rule北大核心CSCD

To better explore the universal robustness against cascading failures on complex networks, closely focusing on the load which is the most important physical quantity that can affect the spread of cascading failure, and dynamic process after a node fails, a cascading failure model with tunable parameters is proposed based on the local characteristic of node. With this model we study the cascading failure condition of ER and BA networks, and obtain the formula of phase transition point theoretically. The relationship between the robustness against cascading failures on complex networks and parameters in the model, including the topology parameters, the initial load coefficient, and the redistribution coefficient, is discussed numerically. In addition, theoretical results also are verified by the simulation results of the ER and BA networks. ©, 2015, The Journal Agency of Complex Systems and Complexity Science. All right reserved.     

行人下肢有限元模型的建立与验证研究

下肢损伤是行人与车辆碰撞事故中的主要损伤形式之一,建立具有较高生物逼真度的行人下肢有限元模型,可以为下肢保护提供有效的研究手段.在下肢长骨(股骨、胫骨、腓骨)、韧带(ACL,PCL,MCL,LCL)及膝关节得到全面验证的基础上,建立了包含骨骼、韧带、肌肉及皮肤等详细解剖学结构的行人下肢有限元模型,并定义了各组织间的接触.利用行人下肢弯曲的生物力学实验,对下肢有限元模型进行了整体弯曲验证.结果显示,下肢有限元模型的损伤形式、损伤发生时刻、膝关节弯矩和弯曲角度均与实验结果吻合较好,能够较真实地反映行人下肢的损伤和生物力学响应,具有较好的生物逼真度.     

基于灰色相似关联关系的灰色变精度粗糙集模型及应用

针对决策信息系统含有大量的灰信息、噪声数据且属性值为区间灰数,而利用传统的方法对其处理时易造成信息损失,鉴于此,本文利用灰色系统理论的思想方法构建了一种新的灰色变精度粗糙集模型。该方法,首先利用灰色相似关联度定义基于阀值λ的灰色相似关联关系、灰色相似关联类,而后以灰色相似关联关系代替灰色变精度粗糙集模型的等价关系,构建了一种基于灰色相似关联度的灰色变精度粗糙集模型,进而研究了模型的相关性质,并以实例验证了新模型的有效性与适用性。     

Command and control model based on complex information relation integration北大核心CSCD

In order to describe collaborative decision-making process, the command and control model is put forward based on complex information relation integrtion and OODA. The characteristics of individual decision-making are analyzed, the complex information relation is considered as the cause of OODA difficulty to describe collaborative decision-making exactly. From the perspective of armament system of systems combat, the information, data, intelligence and knowledge is defined based on knowledge management and Shannon's entropy theory. The basic element is confirmed and the information flow way is analyzed which in the physical, information, cognitive and social domains. From the perspective of information, the armament system of systems complex networks model framework is put forward based on the idea of using OODA to guide armament system of systems complex networks model design. The data, information, intelligence and knowledge flow is analyzed and the describing meta-model is put forward. Using the reticular structure of OODA to describe collaborative decision-making idea is proposed, the command and control model is put forward based on the idea, the simulating tool ExtendSim is used for simulation analysis and results show that our work offer a reference for innovate command and control thory. ©, 2015, The Journal Agency of Complex Systems and Complexity Science. All right reserved.