Estudo experimental do comportamento ocular em trabalhadores administrativos como um indicador de conforto visual em situação de risco de encadeamento

The daylight impact on the visual environment is fundamental on visual display terminal work (VDT). Visual performance and visual comfort should be considered for equal. The study (n=16) was performed at the experimental lighting laboratory. Office work with VDT was evaluated using STROOP task in two orientations: (with/without solar presence in the visual field). Our hypothesis states the existence of a relationship between ocular behavior and visual comfort of workers. An eye-tracker was employed in order to record the ocular gestural parameters: blinks, direction of gaze, eye aperture (Degree of eye?s openness) and pupil size, which were correlated with the vertical illuminance at the eye. Visual comfort was assessed with Glare Sensation Vote. Results indicate a strong negative linear correlation between eye illuminance and the degree of eye?s openness in the direct sunlight scenario (p=-0.636; s=0.008) and in diffuse light scenario (p=-0.661; s=0.005), that could be the main predictor of visual discomfort. This experiment allowed us to explore eye behavior patterns that could be visual comfort indices under glare risk situations.O impacto a luz do dia no ambiente visual é fundamental para o trabalho no Ecrã de Visualização de Dados (EDV). Desempenho visual e conforto visual devem ser considerados em igual. O estudo (n = 16) foi realizado no laboratório experimental de iluminação. O trabalho de escritório com EDV foi avaliado utilizando a tarefa de Stroop em duas orientações: (com / sem presença solar no campo visual). A nossa hipótese afirma a existência de uma relação entre o comportamento ocular e conforto visual dos trabalhadores. Um “eye-tracker” foi desenvolvido para gravar os parâmetros gestuais oculares: pestanejar, direção do olhar, abertura dos olhos (Grau de abertura do olho) e tamanho da pupila, que foram correlacionados com a iluminância vertical no olho. Conforto visual foi avaliado com a escala de sensação de encadeamento. Os resultados indicam uma correlação linear negativa forte entre a luminosidade dos olhos e do grau de abertura de olho no cenário de luz solar direta (p = -0,636; s = 0,008) e no cenário de luz difusa (p = -0,661; s = 0,005), que poderia ser o principal preditor de desconforto visual. Esta experiência permitiu-nos explorar padrões de comportamento do olho que poderiam ser os índices de conforto visual em situação de risco de encadeamento.Fil: Yamin Garretón, Julieta Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; ArgentinaFil: Rodriguez, Roberto Germán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; ArgentinaFil: Pattini, Andrea Elvira. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; Argentin

Search for W~1Z~2\widetilde{W}_1\widetilde{Z}_2 Production via Trilepton Final States in ppˉp\bar{p} collisions at s=1.8\sqrt{s}=1.8 TeV

We have searched for associated production of the lightest chargino, $\widetilde{W}_1$, and next-to-lightest neutralino, $\widetilde{Z}_2$, of the Minimal Supersymmetric Standard Model in $p\bar{p}$ collisions at \mbox{$\sqrt{s}$ = 1.8 TeV} using the \D0 detector at the Fermilab Tevatron collider. Data corresponding to an integrated luminosity of 12.5$\pm 0.7$ \ipb were examined for events containing three isolated leptons. No evidence for $\widetilde{W}_1\widetilde{Z}_2$ pair production was found. Limits on $\sigma(\widetilde{W}_1\widetilde{Z}_2)$Br$(\widetilde{W}_1\to l\nu\widetilde{Z}_1)$Br$(\widetilde{Z}_2\to l\bar{l}\widetilde{Z}_1)$ are presented.Comment: 17 pages (13 + 1 page table + 3 pages figures). 3 PostScript figures will follow in a UUEncoded, gzip'd, tar file. Text in LaTex format. Submitted to Physical Review Letters. Replace comments - Had to resumbmit version with EPSF directive

Existence of random attractors for a class of second order lattice dynamical systems with Brownian motions

Copyright © 2014 Yamin Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.For abstract, see attached file.The National Natural Science Foundation of China under Grant nos. 61374010, 61074129, and 61175111, the Natural Science Foundation of Jiangsu Province of China under Grant BK2012682, the Qing Lan Project of Jiangsu Province (2010), the 333 Project of Jiangsu Province (2011), and the Six Talents Peak Project of Jiangsu Province (DZXX-047)

Pengaruh Intergreen terhadap Kinerja Simpang Bersinyal Jl. Prof Moh Yamin – Jl. Abdurrahman Saleh di Kota Palu

Permasalahan pada simpang Jalan Prof. Moh Yamin – Jalan Dr. Abdurrahman Saleh terletak pada waktu sinyal Traffic Light, dimana nilai pada waktu sinyal All Red(semua merah) yaitu 5 detik sehingga nilai Intergreen (waktu antar hijau) menjadi 8 detik melebihi nilai normal pada MKJI 1997, yang mengakibatkan kendaraan memerlukan waktu lebih lama pada saat melewati simpang tersebut. Penelitian ini bertujuan untuk mengetahui pengaruh intergreen terhadap kinerja simpang bersinyal. Pelaksanaan pengambilan data volume lalu lintas pada hari Selasa,07 September 2021. Waktu survei dibagi menjadi 3 jam puncak pagi, siang, dan sore hari pengambilan data volume lalu lintas menggunakan kamera CCTV. Volume lalu lintas tertinggi pada jam puncak sore hari (16:00 – 18:00) WITA. Penanganan simpang Jalan Prof. Moh Yamin – Jalan Dr. Abdurrahman Saleh terdapat empat skenario, skenario satu yang sangat berpengaruh terhadap kinerja simpang Jalan Prof. Moh Yamin – Jalan Dr. Abdurrahman Saleh. Secara analisis dapat mempengaruhi kinerja simpang khususnya meningkatkan nilai kapasitas sebesar 9%, mengurangi nilai derajat kejenuhan sebesar 9%, serta mengurangi nilai tundaan sebesar 22%. Dalam penanganan simpang Jalan Prof. Moh Yamin – Jalan Dr. Abdurrahman Saleh dilakukan empat skenario penanganan simpang Jalan Prof. Moh Yamin – Jalan Dr. Abdurrahman Saleh. Skenario satu yang memungkinkan untuk di terapkan di lapangan diperoleh waktu sinyal All Red (semua merah) yaitu 2 detik, nilai Intergreen (waktu antar hijau) yaitu 5 detik, dengan menyesuaikan waktu sinyal hijau berdasarkan waktu siklus 173 detik. Diperoleh nilai tundaan pada seluruh lengan simpang yaitu ≥ 60 det/smp dengan tingkat pelayanan simpang dalam kategori F

Antimicrobial Potential of Miana Leaf Extract (Coleus scutellaroides(L) Benth) Against Salmonella typhi: In Vitro Study

Introduction: Salmonella typhi is a bacilli gram-negative bacteria, belonging to the family Enterobacteriaceae, which causes typhoid fever. The high morbidity and mortality rates of typhoid fever and the problem of antibiotics resistance have encouraged development of the use of effective medicinal plants to treat typhoid fever. One of plant widely used as a medicinal plant is miana (Coleus scutellariodes (L.) Benth).Miana leaves contains flavonoid and tannin, in which flavonoid has antibacterial activity because it can denature and coagulate bacterial cell protein. Methods: Miana extracts were diluted in five concentration: 5%, 25%, 50%, 75% and 90%. Pure culture of S. typhi was identified by several biochemical test: TSIA, sulfide production, Indole, motility, vogesproskauer, methyl red and citrate. Inhibition test of extracts against bacteria using the Kirby-Bauer method with blank discs soaked in miana extract solutions, empirical antibiotics and negative control.  Results: Biochemical tests of S. typhi were TSIA: alkali/acid, sulfide production: positive, indole: negative, motility: positive, methyl red: positif, VogesProskauer: negative, and citrate: negative; they were suitable with characteristic of S. typhi. Miana extract inhibited the growth of S. typhi on concentrations of 5%, 25%, 50%, 75% and 90% with the mean inhibition zone diameter of 1.83 mm, 4.33 mm, 5.00 mm, 5.66 mm, and 6.00 mm, respectively and the average inhibition zone of empirical antibiotic levoflocaxin, chloramphenicol and amoxicillin were 24.17 mm, 21.50 mm and 0.00 mm,  respectively. Conclusions: Based on the research results obtained, it can concluded that the miana extract were in the moderate categories as an antibacterial base ingredient. Miana extracts on all concentrations were more potent than amoxicillin

The Structure Community of Planktonic Diatom with Nitrate and Phosphate Concentrations in Sei Undan Estuarine Sub District of Reteh District of Indragiri Hilir

Research on the structure community of planktonic diatom with nitrate andphosphate concentrations in sei undan estuarine sub district of Reteh district ofIndragiri Hilir was conducted on May 2013. The aims of this study was todetermine the community structure of planktonic diatom which includes index ofdiversity, index of dominan and index of uniformity and was to determine therelationship between the nitrate and phosphate consentration with the abundanceof diatom. Sample were taken at 4 station each station was divided into 3sampling points. The identification result of sampel obtained 7 species of centricdiatoms anda 1 species of pennate diatom. The highest abundance of diatom wasfound in station 2 (7.846,95 ind/L) and the lowest was found in station 4 (2.615,65ind/L). The highest individual abundance was shown by Nitzschia pungens andLeptocylindrus minimus. It was indicated that dominan species in the waters.Based on index of diversity, index of dominan and index of unifornity the areawas categorized as mesotrofic area

Identification of Morphometry and Carcass Composition of Local Sheep at Different Growth Rate

Sheep fattening farms have been recently growing rapidly to produce better quality of sheep meat and fullfill consumer's demand. Sheep fattening and breeding farms should be developed proportionally to obtain sustainable sheep flock in the market. Twelve male lambs (less than one year old) were selected based on their average daily gain (ADG), consisting into two groups: 6 fast growing (FG) and 6 slow growing (SG) sheep. Some morphometric parameters in body and head parts of sheep and their carcass production and composition were measured and compared between the groups. The results show that chest circumference, body height, body length, head length and muzzle, top and bottom neck circumferences of FG sheep were significantly higher than in SG sheep (P0.05). It is concluded that selection of fast growing sheep can be recommended by using some morphometric parameters. The selection would not also negatively affect the weight and percentage of carcass composition