197,632 research outputs found
C-m-supermagic labeling of polygonal snake graphs
No full textOner, Tarkan/0000-0002-2882-1666WOS: 000514809400001An H-supermagic labeling of a graph G admitting an H-covering was defined by Guiterrez and Llado [A. Guiterrez, A. Llado, J. Combin. Math. Combin. Comput., 55 (2005), 43-56]. In this work, we shall show that polygonal snake graphs admit C-m-supermagic labeling
PERBANDINGAN AKURASI KLASIFIKASI DARI ALGORITMA NAIVE BAYES, C4.5, DAN ONER (1R)
No full textArtikel ini menjabarkan secara ringkas mengenai beberapa jenisalgoritma klasifikasi seperti Bayes classifiers, Decision Tree classifiers, danRule-Based classifiers. Dari beberapa jenis algoritma klasifikasi tersebutdiperkenalkan algoritma Naïve Bayes, C4.5, dan OneR yangmerepresentasikan ketiga jenis algoritma tersebut. Dengan menggunakanWEKA Experimenter dan dataset yang bersumber dari UCI, dilakukanperbandingan terhadap ketiga algoritma tersebut. Dari hasil perbandingandidapatkan bahwa secara umum algoritma C4.5 memiliki tingkat akurasiyang tinggi pada dataset yang relatif cukup independen. Sedangkanalgoritma OneR mempunyai tingkat akurasi yang tinggi yang sebandingdengan algoritma C4.5 pada dataset yang memiliki jumlah nilai kelas yangsedikit, dan memiliki tingkat akurasi yang sangat rendah ketika diterapkanpada dataset yang memiliki jumlah nilai kelas yang besar
ArtificiAl NeurAl Network ApproAch for the predicitioN of the corN (Zea mays l.) leAf AreA
No full textAbstract OdabaS, M. S., E. Ergun and F. OnEr, 2013. Artificial neural network approach for the predicition of the corn (Zea mays L.) leaf area. Bulg. J. Agric. Sci., This research investigates the artificial neural networks utilization in improving leaf area forecasting at corn leaves (Zea mays L.). Best fitting results were obtained with 2 input nodes (leaf length and leaf width), 2 hidden layers and one output (leaf area). Artificial neural network model performance was tested successfully to describe the relationship between actual leaf area and predicted leaf area. R 2 of leaf area was 0.98. Artificial neural networks model produced satisfied correlation between measured and predicted value and minimum inspection error
Modified Maxwell Fish-Eye Approach for Efficient Coupler Design by Graded Photonic Crystals
No full textWe present a novel design of two dimensional graded index medium that provides coupling of light with high coupling efficiency between two planar dielectric waveguides of different widths (15.46 mu m vs. 2.21 mu m). Poor light coupling performance of butt-coupler can be mitigated by implementing tapered coupler at the expense of long coupler section. In order to reduce coupling losses, a new coupling device approach based on graded index (GRIN) concept is proposed. The refractive index distribution is in the form of modified version of the Maxwell fish-eye lens. The inhomogeneous refractive index distribution is approximated by photonic crystals (PCs) such that the positions of each PC rods are appropriately arranged. Strong electric field focusing ability of the designed GRIN PC medium provides relatively high coupling efficiency that is around 90%. Spectral region corresponding to coupling efficiency over 75% has a bandwidth of Delta omega = 18.56% (284 nm). Finally, we discuss the durability of the proposed coupler against the lateral displacement and angular misalignment of output waveguides. (C) 2012 Optical Society of AmericaThe authors gratefully acknowledge the financial support of the Scientific and Technological Research Council of Turkey (TUBITAK), project 110T306. H. K. also acknowledges partial support from the Turkish Academy of Sciences Distinguished Young Scientist Award (TUBA GEBIP).Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [110T306]; Turkish Academy of Sciences (TUBA GEBIP)Turkish Academy of Science
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
Exploring the impact of external shading system on cognitive task performance, alertness and visual comfort in a daylit workplace environment
No full textThe authors examined the effect of external shading system on cognitive performance, alertness and visual comfort of visual display terminal (VDT) users under two realistic office lighting settings in this study. Daylight was the source of illumination being considered as the most significant and preferred one. A total of 26 participants performed visual and cognitive demanding tasks as well as providing subjective alertness, performance and visual evaluations in a full-scale mock-up VDT workstation. Two trials (with and without shading system) were executed during one experimental session. Results revealed that the use of a shading system improves the performance of a user on colour-naming task requiring sustained attention, while no differential effects were observed on tasks involving other cognitive skills such as search velocity and vigilance. Within-subject performance differences were more pronounced during morning hours. Higher performance was reported in some cognitive tests when the subjective sensation of visual discomfort was lower
Dual polarized broadband and all dielectric partial cloaking using stacked graded index structures
No full textWe propose broadband one-dimensional optical cloaking design based on isotropic and purely dielectric non-absorbent materials. The photonic structures are formed by utilizing graded index (GRIN) concept in stacked form. All simulations are performed by finite-difference time-domain and plane wave basis frequency domain numerical methods. Indications in ray optics are also presented for the cloaking device. The refractive index distribution of the design is also obtained via effective medium theory. The cloaking devices can reroute wavelengths of light in one dimension. The rerouted light is avoided to reach the interior region of the stacked GRIN structure. Unidirectional GRIN cloaking structure demonstrates low-loss and large bandwidth characteristics. It is shown that the structure operates in dual polarization mode. Performed numerical analyses reveal the capability of cloaking devices to hide arbitrary shaped large objects from the incident light. (C) 2014 Optical Society of America
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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