ANALISIS KELAYAKAN USAHA PEMELIHARAAN DAN PEMIJAHAN INDUK IKAN BANDENG DI BALAI PERIKANAN BUDIDAYA AIR PAYAU (BPBAP)UJUNG BATEE KABUPATEN ACEH BESAR

Banda Ace

Individual differences in visual salience vary along semantic dimensions

What determines where we look? Theories of attentional guidance hold that image features and task demands govern fixation behavior, while differences between observers are interpreted as a “noise-ceiling” that strictly limits predictability of fixations. However, recent twin studies suggest a genetic basis of gaze-trace similarity for a given stimulus. This leads to the question of how individuals differ in their gaze behavior and what may explain these differences. Here, we investigated the fixations of >100 human adults freely viewing a large set of complex scenes containing thousands of semantically annotated objects. We found systematic individual differences in fixation frequencies along six semantic stimulus dimensions. These differences were large (>twofold) and highly stable across images and time. Surprisingly, they also held for first fixations directed toward each image, commonly interpreted as “bottom-up” visual salience. Their perceptual relevance was documented by a correlation between individual face salience and face recognition skills. The set of reliable individual salience dimensions and their covariance pattern replicated across samples from three different countries, suggesting they reflect fundamental biological mechanisms of attention. Our findings show stable individual differences in salience along a set of fundamental semantic dimensions and that these differences have meaningful perceptual implications. Visual salience reflects features of the observer as well as the image

Impact of Dynamic Traffic on Vehicle-to-Vehicle Visible Light Communication Systems

In this article we studies the impact of dynamic vehicular traffic density on the signal-to-noise-ratio and the associated bit-error-rate (BER) performance of vehicle-to-vehicle visible light communication (V2V-VLC) systems. The article uses traffic data from the M42 and M6 motorways in the U.K. to investigate the probability of coexistence of other vehicles in the adjacent lanes, which induce interference and act as potential reflectors. The results show that the probability of coexistence of other vehicles in the adjacent lanes is lane-independent and it increases during the rush hours to 90%, while it decays to less than 10% during the off-peak and early morning hours. The intervehicular distance and the BER performance vary widely between different lanes and different periods of the day. The results also show that the BER performance of V2V-VLC system with non-line-of-sight (NLOS) component and with LOS component are comparable at rush hours. However, high BER values are predicted during the off-peak hours for NLOS components of the channel

An overview of the Portuguese electricity market

The electricity market in Portugal was recently opened to all consumers. However, it remains highly concentrated in terms of control of production and supply and the long-term power purchase arrangements still coexist with free market. This paper discusses the electricity market restructuring process in Portugal, presenting its main marks over the past years and the present situation. The evolution of the electricity prices in Portugal is analysed, and a comparison with EU-15 is presented. Special attention is given to Spain due to the possibility of cross-border competition in the future arising from the formation of the Iberian electricity market

Prevalence of Gastrointestinal Endoparasites from Confiscated Long Tailed Macaque (Macaca fascicularis) Formerly Used as Dancing Monkey, Pet and Human Wildlife Conflict in Java Areas of Indonesia

The purpose of this study is to identify the type, intensity, and prevalence of intestinal helminth infection in confiscated Long-tailed macaque (Macaca fascicularis). Thirty samples of feces from long-tailed monkeys (18 females and 12 males), with a total of 7 Dancing Monkeys, 5 Human Wildlife Conflict groups, and 18 Pet macaque groups. West Java's Cikole Animal Hospital collected samples aseptically, labeled them, and then analyzed them in its clinical laboratory. Using the floating method, samples were evaluated to determine the intensity of infection and the identification of parasites. The incidence of endoparasites in confiscated macaques is 20 %. The prevalence of endoparasites was highest in the individual group of pet macaques, at 27.78 %, and lowest in the Dancing Monkey group, at 14.29%. The prevalence of endoparasite infection was highest in the pet macaques, at 83.33 percent, compared to 16.67% among the dancing monkeys. In the human-infection conflict group, no endoparasite infections were detected. The prevalence of endoparasites in positive infected infant samples was as high as 75%, but the prevalence in sub-adult and adult age groups was 11% and 14%, respectively. From the number of positive samples, the male individual group had the highest percentage, 66.66 %, while the female individual group had the lowest proportion, 33.33 %. In general, the pattern of infection is the same, consisting of 50% double infection types and 50% single infection types. The average intensity of helminth infection in Strongyle spp. was 45.50±25.10 eggs per gram of feces, while in Trichuris spp., it was 120.00±0.00 eggs per gram of feces. Strongyle spp. infects 100% of the positive samples, while Trichuris spp. infects 50% of the samples.   Keywords: Macaca fascicularis, Confiscated macaque, Endoparasite, Prevalence

Impact of Vehicle Headlights Radiation Pattern on Dynamic Vehicular VLC Channel

This article develops a statistical large-scale fading (path loss) model of a dynamic vehicular visible light communication (VVLC) system. The proposed model combines the impact of inter-vehicle spacing and the radiation intensity distribution as a function of the irradiance angle which changes with the traffic conditions. Three models (Lambertian, Gaussian, and empirical) are utilized to examine the impact of vehicles headlights radiation pattern on the statistical path loss of VVLC system. The analytical model of channel path loss is validated by Monte Carlo simulation with the headlight model simulated with a raytracing software. The path loss values of the Gaussian model differ by 2 dB compared to the Lambertian model, irrespective of the traffic conditions while it differs by 24.6 dB during late night and 8.15 dB during rush hours compared to the empirical model of a Toyota Altis headlight. This variation shows that the radiation intensity distribution should be modelled for each vehicle's headlights from each manufacturer to ensure accurate VVLC channel model. The proposed Gaussian model provides a close approximation to describe such radiation pattern and can easily be adapted to model for different manufacturers' headlights