4,339 research outputs found
Kaveh Akbar, 41st Annual ODU Literary Festival
No full textKaveh Akbar\u27s poems appear recently in The New Yorker, Poetry, The New York Times, The Nation, and elsewhere. His first book, Calling a Wolf a Wolf, is just out with Alice James in the US and Penguin in the UK. He is also the author of the chapbook Portrait of the Alcoholic. The recipient of a Pushcart Prize, a Ruth Lilly and Dorothy Sargent Fellowship from the Poetry Foundation, and the Lucille Medwick Memorial Award from the Poetry Society of America, Akbar was born in Tehran, Iran, and teaches in the MFA program at Purdue University and in the low-residency MFA programs at Randolph College
FIGURE 5. Nothotylenchus hexaglyphus. A, C-F, K-I & M in New and known species of Nothotylenchus Thorne, 1941 (Nematoda: Anguinidae) from Iran with an updated list of species
No full textFIGURE 5. Nothotylenchus hexaglyphus. A, C-F, K-I & M: Female. B, G, H & L: Male. A: Lateral fields; B-D: Head & stylet; E: Pharynx; F-I: Basal pharyngeal bulb; J: PUS; K-M: Tail.Published as part of Hashemi, Kobra & Karegar, Akbar, 2020, New and known species of Nothotylenchus Thorne, 1941 (Nematoda: Anguinidae) from Iran with an updated list of species, pp. 482-500 in Zootaxa 4729 (4) on page 492, DOI: 10.11646/zootaxa.4729.4.2, http://zenodo.org/record/375201
The class of simple dynamics systems
Full text link[EN] In this paper, we study the class of simple dynamical systems on R induced by continuous maps having finitely many non-ordinary points. We characterize this class using labeled digraphs and dynamically independent sets. In fact, we classify dynamical systems up to their number of non-ordinary points. In particular, we discuss about the class of continuous maps having unique non-ordinary point, and the class of continuous maps having exactly two non-ordinary points.The author is very thankful to the referee for giving valuable suggestions. The author acknowledges SERB-MATRICS Grant No. MTR/2018/000256 for financial support.Ali Akbar, K. (2020). The class of simple dynamics systems. Applied General Topology. 21(2):215-233. https://doi.org/10.4995/agt.2020.12929OJS215233212K. Ali Akbar, Some results in linear, symbolic, and general topological dynamics, Ph. D. Thesis, University of Hyderabad (2010).K. Ali Akbar, V. Kannan and I. Subramania Pillai, Simple dynamical systems, Applied General Topology 2, no. 2 (2019), 307-324. https://doi.org/10.4995/agt.2019.7910A. Brown and C. Pearcy, An introduction to analysis (Graduate Texts in Mathematics), Springer-Verlag, New York, 1995. https://doi.org/10.1007/978-1-4612-0787-0R. A. Holmgren, A first course in discrete dynamical systems, Springer-Verlag, NewYork, 1996. https://doi.org/10.1007/978-1-4419-8732-7S. Patinkin, Transitivity implies period 6, preprint.A. N. Sharkovskii, Coexistence of cycles of a continuous map of a line into itself, Ukr. Math. J. 16 (1964), 61-71.J. Smital, A chaotic function with some extremal properties, Proc. Amer. Math. Soc. 87 (1983), 54-56. https://doi.org/10.2307/2044350B. Sankara Rao, I. Subramania Pillai and V. Kannan, The set of dynamically special points, Aequationes Mathematicae 82, no. 1-2 (2011), 81-90. https://doi.org/10.1007/s00010-010-0066-
Nourooz celebration in India
No full text<p>volume = {1}, number = {1}, author = {Dr.Ali Akbar Shah}, title = {Nourooz celebration in India }, publisher = {Saurabh Chandra}, journal = {SOCRATES}, ISSN 2347-6869 year = {2013}</p
Carbon Dots for Photocatalytic Degradation of Aqueous Pollutants: Recent Advancements
Full text linkThe immense progress of humanity on the technological, domestic, and industrial fronts comes at the cost of polluting the planet. Aquatic pollution is particularly dangerous since all life forms are directly linked to it. Each year tons of industrial and domestic pollutants make their way into aqueous systems. Efficient removal/degradation of these pollutants is of prime importance for the sustainable future. Among many technologies, photodegradation is an emerging and promising method for the successful removal of aqueous pollutants since it is powered by abundant solar light. The last decade had shown that carbon dots are among the most promising materials that can be utilized as an efficient tool to derive various solar-driven chemical reactions. Carbon dots possess unique photophysical and chemical properties such as light-harvesting over a broad-spectrum region, upconversion photoluminescence, photosensitizers, chemical inertness, and bivalent redox character, etc. The ease of synthesis of carbon dots at low cost also contributes hugely to their utilizations as an efficient photocatalyst for the degradation of aqueous pollutants. This review summarizes the recent progress made in the field of photodegradation of aqueous pollutants with the aid of carbon dots and their hybrids, highlighting the critical role carbon dots can play in the field
Klasifikasi Mutu Mutiara Berdasarkan Bentuk, Ukuran Dan Cacat Menggunakan K-Nearest Neighbor (K-Nn)
Full text linkDalam industri fashion khususnya mutiara, proses klasifikasi mutiara dilakukan secara manual dengan pengamatan visual. Hal tersebut tentu akan memakan waktu yang lama dan menghasilkan produk dengan mutu yang salah karena keterbatasan visual dan kelelahan manusia. Untuk itu dibutuhkan suatu teknologi untuk melakukan proses klasifikasi yang cepat dan akurat.
Teknologi yang dapat diterapkan adalah pengolahan citra digital dan metode K-Nearest Neighbor. Dalam penelititian ini menggunakan beberapa proses pengolahan citra digital seperti metode thereshold, yaitu dengan cara memisahkah objek dan latar belakang citra dan selanjutnya konten yang digunakan adalah bentuk dan ukuran yang diektraksi dari citra mutiara dengan metode regionprops.
Metode regionprops adalah metode yang digunakan untuk mengukur sekumpulan properti–properti dari setiap region yang telah dilabeli dalam matriks label. Bilangan integer positif yang merupakan elemen dari matriks berkorespondensi dengan region yang bersesuaian area panjang major axis dan panjang minor axis yang digunakan merupakan sebagian dari properti yang dihasilkan fungsi regionprops. Dan proses klasifikasinya menggunakan metode K-Nearest neighbor merupakan salah satu metode untuk melakukan klasifikasi terhadap objek berdasarkan data pembelajaran yang jaraknya paling dekat dengan objek tersebut. Tujuannya adalah untuk mengklasifikasikan objek baru berdasarkan atribut dan data training. Klasifikasi dilakukan tanpa menggunakan model tetapi hanya berdasarkan memori. Algoritma K-Nearest Neighbor menggunakan klasifikasi ketetanggaan sebagai prediksi terhadap data baru.
Hasil akhir dari sistem ini adalah mampu menentukan kelas dan kualitas mutiara. Dari data sebanyak 25 yang terdiri dari 10 mutiara kualitas A, 10 mutiara kualitas AA, dan 5 mutiara kualitas AAA yang telah divalidasi oleh pakar. Dengan menggunakan Metode K-NN (K-Nearest Neighbor) dan nilai K=1 mampu menghasilkan tingkat akurasi mencapai 92,30%
A simple method for estimating the effectiveness of reactive power‐based low‐voltage ride‐through support of the distributed energy resources
No full textAbstract The increasing number of distributed energy resources (DERs) leads to the need for DER that can provide ancillary service, such as low‐voltage ride‐through (LVRT) voltage support. The support is made to improve the short‐term voltage stability in power systems. Recently, DER LVRT voltage support through reactive power regulation are becoming common. Designing LVRT voltage support is highly influenced by the accuracy of the modelling and the data needed. However, in some cases, the required modelling can challenge the computational complexity, effort, and required data. Nevertheless, modelling the systems through an oversimplification may result in inaccuracies and hypothetical solution. Thus, the best compromise between model accuracy and simplicity will alleviate the problem. The study presents a methodology for estimating the effectiveness of the support. Unlike the commonly computer‐assisted approach, such as the dynamic RMS simulation, the benefit of the methodology is on the computing process, which is much simpler since the dynamic DER modelling work is not needed, and the evaluation of the effectiveness can be achieved even when the grid information is incomplete. Its accuracy is validated against typical RMS simulation results obtained using PowerFactory DIgsilent software for well‐characterised networks
Intelligence based coordination of large scale grid-connected photovoltaic systems
No full textThis paper explores the possibility of optimizing two control strategies currently available for photovoltaic (PV) plants, namely additional reactive power and active power reduction. As the penetration of PV plants is expected to increase, controlling such plants during faults becomes increasingly important. The stability of the power system during a fault and immediately after is affected by the system capability to control the reactive and active power flows. Motivated by the fact that curtailing active and injecting reactive power during faults impacts on the system behavior, the two available controllers are tuned and optimized in such a way that the system stability during the disturbance is secured with the help of Particle Swarm Optimization (PSO) algorithm. The optimization process uses the locally measured voltage and frequency at the Point of Common Coupling (PCC) of the PV. The study takes into account various circumstances, such as levels of PV penetration and faults.</p
sj-pdf-1-jef-10.1177_15589250211046243 – Supplemental material for A stabilization of the electrospun, modified polyacrylonitril with functionalized single-walled carbon nanotubes
No full textSupplemental material, sj-pdf-1-jef-10.1177_15589250211046243 for A stabilization of the electrospun, modified polyacrylonitril with functionalized single-walled carbon nanotubes by Fateme, Marjan Abbasi and Akbar K Haghi in Journal of Engineered Fibers and Fabrics</p
A critical analysis of works of Razia Tujjar
No full text<p>volume = {1}, number = {1}, author = {Dr.Ali Akbar Shah}, title = {A critical analysis of works of Razia Tujjar }, publisher = {Saurabh Chandra}, journal = {SOCRATES}, ISSN 2347-6869 year = {2013}</p>
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