New species of the \u3ci\u3eScarabaeus\u3c/i\u3e subgenus \u3ci\u3eScarabaeolus\u3c/i\u3e Balthasar, with a review of the subgenus (Scarabaeidae: Scarabaeinae: Scarabaeini)

The Scarabaeus subgenus Scarabaeolus Balthasar, 1965 (Scarabaeidae: Scarabaeinae: Scarabaeini) is defined and nine new species are described, six from the Republic of South Africa [S. (S.) fragilis sp. n., S. (S.) krugeri sp. n., S. (S.) lizleri sp. n., S. (S.) orientalis sp. n., S. (S.) rugosipennis sp. n., S. (S.) similis sp. n.] and one each from Angola [S. (S.) cunene sp. n.], Namibia [S. (S.) namibensis sp. n.] and Kenya [S. (S.) werneri sp. n.], bringing the number of recorded species up to 41. Species accounts listing original descriptions, subsequent accounts, type localities, type repositories, and geographic distributions are provided for all the species. The status of S. (S.) reichei Waterhouse, 1890 and of S. (S.) bohemani Harold, 1868, both formerly synonymized and reinstated, are discussed. It is concluded that S. (S.) reichei is synonymous with S. (S.) canaliculatus Fairmaire, 1888, whereas S. (S.) bohemani differs from S. (S.) palemo Olivier, 1789 in the color of antennal club and shape of paramere tips, and is upheld pending availability of molecular data

Review of Synapsis Bates (Scarabaeidae: Scarabaeinae: Coprini), with description of a new species

Presented are a checklist, a discussion of and keys to species groups and their constituent species, and a description of one new species: Synapsis horaki. The species Synapsis cambeforti Krikken and S. thoas Sharp are synonymized with S. ritsemae Lansberge, Balthasar’s synonymy of S. yunnana Arrow with S. tridens Sharp is revived, and the status of six recently described species is left unresolved because of insufficient data

Traffic Analysis of IEEE 802.11 on Physical Layer by using Software Defined Radio

The security of wireless networks is a fairly discussed topic. There are many threads capable of attacking any personal, public, or company network. One way of protection is to analyze traffic on the desired wireless network and look for irregularities in the traffic. There are various approaches on how to capture and analyze wireless traffic. In this paper, we present three enablers on capturing wireless traffic, including Off-the-shelf wireless cards and software defined radios. The results provide the capabilities of used devices and possibilities on how to analyze the traffic. We also present our developed wireless traffic visualizer written in python that can be utilized to discover possible attacks on wireless networks visually.Peer reviewe

The Security Testbed for the Purposes of the ITS-G5 Communication Attacks Prevention

Secure communication in the Intelligent Transport System (ITS) plays a crucial role in vehicular safety. Security threats can be an unwanted cause of congestions and attacks. In this paper, first, the security threats in ITS are described and discussed. Second, a concept of the security testbed for ITS-G5 communication was presented. Its purpose is to test or verify the security threats for the machine-to-machine communication in the ITS. The testbed is composed of two parts. The first part represents the vehicle, and the second part is the Road-Side Unit (RSU) or the Road-vehicle unit (RVU). The testbed contains Arduino-type modules, SPI interface to CAN bus converter, and ELM 327 diagnostic tool supporting all communication protocols of the OBD standard. The simulator presented in this article was practically implemented and the functionality verified by experimental testing. Finally, a message for remote speed limiting was implemented on the testbed for further security testing.Peer reviewe

The Broker Simulation Model in the Emission Allowances Trading Area

This paper is focused on possibilities of simulations of emission allowances trading within the EU emission trading system using new designed broker simulation model which integrates different original soft computing and decision making methods. Firstly, the paper presents the background of the EU emissions trading system and an overview of different methods used in current research connected with CO2 emission allowances trading. The key part of the paper focuses on the broker simulation model creation and application. The results are based on expert systems with fuzzy rule bases, nonlinear fuzzy rule based predictors and fuzzy rule based behavior modelling. The application part of the results has been performed in Matlab. The broker simulation model is able to make decisions connected with the traded amount, price of allowances and buy/sell actions within the time on the market. Keywords: EU ETS; Fuzzy modelling; Broker JEL Classifications: C44; Q48; Q5

Mechanical behaviour and durability of high volume fly ash cementitious composites

The purpose of this research is to separate different morphological particles of ASTM class F fly ash, and study their effect on mechanical behaviour and durability of high volume cementitious mixtures. In this research wet separation of raw fly ash is carried out, which resulted in three layers of different morphological particles. The first layer of particles float, comprise of about 1-5% of fly ash, is identified as cenospheres or hollow spheres. The second layer of particles is measured to be 55-60% of raw fly ash and consisting of porous spherical and rounded particles rich in Si and Al. The third layer particles is measured to be about 35-40% of raw fly ash. High volume fly ash cementitious composites containing second or third layer particles are tested under compression and bending, highlighting a higher strength and ductility in comparison to cementitious ones containing raw fly ash particles.&nbsp

European database of explanted UHMWPE liners from total joint replacements: correlations among polymer modifications, structure, oxidation, mechanical properties and lifetime in vivo

This contribution lays the foundation for the European database of explanted UHMWPE liners from total joint replacements. Three EU countries (Czech Republic, Italy and Spain) have joined their datasets containing anonymized patient data (such as age and BMI), manufacturer data (such as information on UHMWPE crosslinking, thermal treatment and sterilization), orthopedic evaluation (such as total duration of the implant in vivo and reasons for its revision) and material characterization (such as oxidative degradation and micromechanical properties). The joined database contains more than 500 entries, exhibiting gradual growth, and it is beginning to show interesting trends, which are discussed in our contribution, including (i) strong correlations between UHMWPE oxidative degradation, degree of crystallinity and microhardness; (ii) statistically significant differences between UHMWPE liners with different types of sterilization; (iii) realistic correlations between the extent of oxidative degradation and the observed reasons for total joint replacement failures. Our final objective and task for the future is to continuously expand the database, involving researchers from other European countries, in order to create a robust tool that will contribute to the better understanding of structure–properties–performance relationships in the field of arthroplasty implants

Ekologické zemědělství, učebnice pro školy i praxi. I. díl. Základy EZ, agroenvironmentální aspekty a pěstování rostlin

První učebnice ekologického zemědělství v České republice. Obsahuje základy filosofie a praxe v ekologickém zemědělství, zaměřené na rostlinnou produkci a v samostatné kapitole informuje o biodynamickém zemědělství