Performance Analysis of Industrial Cooperative Communication System in Generalized Fading Environment

This paper considers the performance analysis of M-ary phase shift keying industrial cooperative relaying system in Nakagami-m multipath fading channel with Gamma shadowing, which is known as the Generalized-K composite fading channel. Since the paper deals with the industrial environment, the communication channel is also affected by the additive Middleton\u27s Class-A impulsive noise. The bit error rate is used as a performance measure and the closed-form average bit error rate expression was derived. The influence of different fading and noise parameters on the system performance is investigated. The obtained results may be used for the improvement of the present and future industrial wireless communication systems

Razrada metoda za dokazivanje Pseudomonas savastanoi pv. phaseolicola na semenu pasulja

Pseudomonas savastanoi pv. phaseolicola detection on artificially inoculated bean seeds was investigated. The method of the International Seed Federation – ISF (2006) was used. It includes bacteria extraction from seeds, isolation on semiselective media and checking the pathogenicity of investigated isolates. For verification of results, quick new methods of investigation were used (ELISA test and PCR). The results show that semiselective media MT (Milk Tween Agar) and MSP (Modified Sucrose Peptone Agar) can be appropriate for isolation of this bacterium. Pathogenicity of the investigated isolates was confirmed on cotyledon leaves of bean. ELISA test and PCR confirmed that all investigated isolates and reisolates belong to the bacterium P. s. pv. phaseolicola.U radu je ispitivana mogućnost utvrđivanja prisustva bakterije Pseudomonas savastanoi pv. phaseolicola sa veštački inokulisanog semena pasulja. Korišćena je metoda International Seed Federation (ISF), koja uključuje ekstrakciju bakterija iz semena, izolaciju na poluselektivne podloge i proveru patogenosti dobijenih izolata. U cilju potvrde rezultata korišćene su brze savremene metode identifikacije (ELISA test i PCR). Rezultati dobijeni tokom rada pokazuju da su poluselektivne podloge MT (Milk Tween Agar) i MSP (Modified Sucrose Peptone Agar) pogodne za izolaciju ove bakterije. Patogenost odabranih izolata dokazana je na kotiledonim listovima pasulja. Primenom ELISA testova i PCR, potvrđeno je da svi ispitivani izolati i reizolati pripadaju bakteriji P. s. pv. phaseolicola

Razrada metoda za dokazivanje Xanthomonas axonopodis pv. phaseoli na semenu pasulja

Xanthomonas axonopodis pv. phaseoli detection on artificially inoculated bean seeds was investigated. The method of the International Seed Federation – ISF (2006) was used. It included bacteria extraction from seeds and isolation on semiselective media with pathogenicity test of the investigated isolates. ELISA and PCR were used for verification of results. The results showed that the semiselective media MT (Milk Tween Agar) and XCP1 (Xanthomonas campestris pv. phaseoli Agar) were very suitable for isolation of X. a. pv. phaseoli. Pathogenicity was confirmed on young bean plants. ELISA test and PCR confirmed that all investigated isolates and reisolates belong to the bacterium X. a. pv. phaseoli.U radu je ispitivana mogućnost utvrđivanja prisustva bakterije Xanthomonas axonopodis pv. phaseoli na veštački inokulisanom semenu pasulja. Ispitivanja su vršena po metodi International Seed Federation (ISF), ekstrakcijom bakterija iz semena i izolacijom na poluselektivne podloge uz proveru patogenosti dobijenih izolata. Za potvrdu dobijenih rezultata korišćen je ELISA test i PCR. Prema dobijenim rezultatima ova bakterija se može uspešno izolovati na poluselektivne podloge MT (Milk Tween Agar) i XCP1 (Xanthomonas campestris pv. phaseoli Agar). Patogenost je dokazana na mladim biljčicama pasulja. ELISA testovi i PCR su potvrdili da svi ispitivani izolati i reizolati pripadaju bakteriji X. a. pv. phaseoli

YIELD AND QUALITY OF MÜLLER-THURGAU CLONE GM11 OF NIS GRAPE GROWING REGION

This paper presents the results of research variety Müller-Thurgau, clone 11 Gm, in order to determine quality indicators and the possibility of expansion in the vineyards of Southern Serbia. In terms of Nis grape growing region of the test are the most important agro technological and economic characteristics of the clone 11 Gm compared to the standard variety Müller-Thurgau. The test clone exhibited significant differences in yield and quality of grapes

Nanostructured Fe2O3/TiO2 thick films prepared by screen printing

Nanostructured single layered (pure TiO2 , pure α-Fe2O3 and mixed Fe2O3 /TiO2 with two different oxide ratios, 2 : 3 and 3 : 2) and double layered (TiO2 layer over a Fe2O3 layer) thick films have been fabricated by screen printing technology on a glass substrate. The pastes used for film preparation were obtained by adding an organic vehicle to the oxide powders together with a small percentage of binding glass frit. Samples were dried up to 100 °C and sintered at 650 °C/60 minutes. Structural, morphological and optical studies have been carried out using XRD, SEM analyses and UV/Vis spectroscopy. The prepared pure and mixed Fe2O3 /TiO2 thick films had a homogenous nanostructure without secondary phases. Indirect band gaps were determined from the measured transmission spectra and the obtained values are in the range of literature data. [Projekat Ministarstva nauke Republike Srbije, br. III45007

LTE AND WIFI CO-EXISTENCE IN 5 GHZ UNLICENSED BAND

Since the future mobile networks will require significantly higher data throughput, and the Long-Term Evolution (LTE) licensed bands are already occupied, the frequency band extension and the data rate increase may be achieved by using some of the available unlicensed bands. The most appropriate unlicensed band for this purpose lies in 5 GHz frequency range. However, this unlicensed band is already occupied by WiFi networks and a special attention has to be paid to coordinate these two different networks in the shared spectrum usage. Therefore, this paper considers the shared access co-existence in 5 GHz unlicensed band between uncoordinated LTE and WiFi networks. More precisely, it considers the influence of the LTE downlink transmission on the performance of the WiFi networks. The experimental results show that the LTE significantly degrades the WiFi network performance, which means that some of the coordination algorithms have to be employed

Implementation of monitoring for genetically modified rapeseed in Serbia

Genetically modified (GMO) rapeseed ( Brassica napus ) is not grown commercially in European Union, but several lines have been approved for production and use as food and feed. A case-specific monitoring of herbicide-tolerant rapeseed, events RT73, RF3 and T45 was established by Ministry of Agriculture of Republic of Serbia. The objectives of the present study were to introduce methods for detection of herbicide-tolerant GM oilseed rape, investigate occurrence and monitor the presence of GM rapeseed in seed and the feed products, as well as to develop a protocol for quantification. The study was based on 48 samples, rapeseed (33) and feed (15) products, imported from EU countries (Germany, Belgium, France, Czech Republic, Austria) and from domestic market. Seven positive feed samples and no positive seed samples have found. The percent of GMO in feed samples, estimated on semi-quantitative way, was below labelling threshold. Adventitious presence of GM materials in non-GM grain, derived food and feedstuffs is a concern to international grain trade and needs continuous monitoring

PERFORMANCE OF MACRO DIVERSITY WIRELESS COMMUNICATION SYSTEM OPERATING IN WEIBUL MULTIPATH FADING ENVIRONMENT

In this paper, we consider wireless mobile radio communication system with macro diversity reception. Signal is subject to Weibull small scale fading and Gamma large scale fading resulting in system performance degradation. Receiver uses macro diversity selection combining (SC) technique in order to reduce the impact of long term fading effects, and two micro diversity SC branches are used to mitigate Weibull short term fading effects on system performance. Probability density function (PDF), and cumulative distribution function (CDF), as well as level crossing rate (LCR) and average fade duration (AFD) of the SC receiver output signal envelope are evaluated. The obtained expressions converge rapidly for all considered values of Weibull fading parameter and Gamma shadowing severity parameter. Mathematical results are studied in order to analyze the influence of Weibull fading parameter and Gamma shadowing severity parameter on statistical properties of the SC receiver output signal

Anatomic and MRI bases for medullary infarctions with patients' presentation

Objective: There is a low incidence of the medullary infarctions and sparse data about the vascular territories, as well as a correlation among the anatomic, magnetic resonance imaging (MRI) and neurologic signs. Materials and methods: Arteries of the 10 right and left sides of the brain stem were injected with India ink, fixed in formalin and microdissected. The enrolled 34 patients with medullary infarctions underwent a neurologic, MRI and Doppler examination. Results: Four types of the infarctions were distinguished according to the involved vascular territories. The isolated medial medullary infarctions (MMIs) were present in 14.7%. The complete MMIs comprised one bilateral infarction (2.9%), whilst the incomplete and partial MMIs were observed in 5.9% and 8.9%, respectively. The anterolateral infarctions (ALMIs) were very rare (2.9%). The complete and incomplete lateral infarctions (LMIs), noted in 35.3%, comprised 11.8% and 23.6%, respectively, that is, the anterior (5.9%), posterior (8.9%), deep (2.9%), and peripheral (5.9%). Dorsal ischemic lesions (DMIs) occurred in 11.8%, either as a complete (2.9%), or isolated lateral (5.9%) or medial infarctions (2.9%). The remaining ischemic regions belonged to various combined infarctions of the MMI, ALMI, LMI and DMI (35.3%). The infarctions most often affected the upper medulla (47.1%), middle (11.8%), or both (29.5%). Several motor and sensory signs were manifested following infarctions, including vestibular, cerebellar, ocular, sympathetic, respiratory and auditory symptoms. Conclusions: There was a good correlation among the vascular territories, MRI ischemia features, and neurologic findings regarding the medullary infarctions.Peer reviewe

SOME IMPORTANT AGROBIOLOGICAL AND TECHNOLOGICAL CHARACTERISTICS OF PROMISING GRAPEVINE GENOTYPES OBTAINED FOR RED WINE PRODUCTION

This paper describes some important properties of five new grapevine genotypes (8533, 7912, 15212, 13283 and 14558) created for red wine production. Yield, mechanical properties of bunch and berry, and quality properties of grapes were analyzed. Genotype 7912 had a high yield (2.75 kg vine-1). The high contents of anthocyanins in grape berry skin were found in the genotypes 8533, 13283 and 15212 (10.65; 10.36; 10.07 mg/sample). Quality of grape of examined genotypes were determined to be high under the agroecological conditions of Belgrade grape growing region in Serbia. Genotype 13283 appeared to be the most promising for yield and grape quality. All the investigated genotypes have been proposed to the Committee on new varieties in Serbia