469 research outputs found
Four ways to improve and strengthen your supply chain
No full textDileep Kulkarni, Senior Principal Consultant - Expense Reduction Analysts, Inc.Title from PDF caption (viewed on June 14, 2022).This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
Selectivity for dimers in pentene oligomerization over acid zeolites
No full textThe reactions of 1-pentene over acid zeolites were investigated in the liquid phase at 473 K. The primary reactions were isomerization, dimerization, and subsequent cracking of dimers. Zeolites consisting of only 10-membered (MFI) or 12-membered rings (FAU, BEA) behaved similarly, with dimerization and subsequent cracking products observed. Zeolites possessing 8-membered ring pores (MOR, FER) showed very different selectivity from each other and from other zeolites. MOR showed almost complete conversion of C10 olefins, such that hexene and butene from cracking were the dominant products. FER showed high activity and selectivity for dimerization, with very small amounts of cracking products observed.Peer reviewe
Spariolenus omidvarbrothers Moradmand & Wesal & Kulkarni 2023, sp. n.
No full text<i>Spariolenus omidvarbrothers</i> sp. n. <p>Figs 1A–C, 2A–D, 9A, 11A–C</p> <p> <b>Type material.</b> <b>Holotype:</b> male, <b> IRAN: <i>Sistan & Baluchestan Province:</i></b> Barashk, Bidan Oasis valley, 26.61 N, 60.35 E, 1336 m, 5 June 2017, M. Moradmand & H. Salehi leg. (SMF). <b>Paratypes:</b> 2 females with same data as for holotype (SMF).</p> <p> <b>Etymology.</b> The species is named in honour of the Omidvar brothers, two Iranian adventurers and explorers who travelled around the world in the 1950s and produced a diary and one of the first travel documentaries from extremely remote areas. Their biography inspired the life of many generations including the first author; noun in apposition.</p> <p> <b>Diagnosis.</b> Males of the new species share the bifurcated ET with <i>S. zagros</i> Moradmand & Jäger, 2011; <i>S. fathpouri</i> Moradmand, 2017; <i>S. mansourii</i>, and <i>S. bakasura</i> <b>sp. n.</b>). They can be distinguished from the latter three species by subequal RET and PET (vs. RET obviously longer than PET). They differ from <i>S. zagros</i> by PET 1/3 of RET in width (vs. similar width of PET and RET in <i>S. zagros</i>) (Fig. 1C). The female epigyne shows a unique MS (widened medially and extended longitudinally, Fig. 2A) (vs. MS narrow and barely visible in the rest of congeners).</p> <p> <b>Male</b> (holotype): <i>Measurements.</i> TL 14.1, PL 6.6, PW 5.7, AW 2.5, OL 7.5, OW 4.5. <i>Eyes</i> (Fig 11A). AME 0.33, ALE 0.75, PME 0.48, PLE 0.83, eye interdistances: AME-AME 0.18, AME-ALE 0.03, PME-PME 0.17, PME-PLE 0.62, AME-PME 0.21, ALE-PLE 0.57, clypeus-AME 0.71, clypeus-ALE 0.21. <i>Spination.</i> Palp 131, 101, 2121; Legs: Femur I–III 323(2), IV 321; Patella I–IV 101; Tibia I 131 10, II 232 10, III 1318, IV 2226; Metatarsus I–III 1014, IV 3036. <i>Measurements of palp and legs.</i> Palp 9.8 [3.2, 1.3, 2.2, 3.1], I 40.6 [10.8, 3.8, 11.5, 11.7, 2.8], II 46.0 [12.2, 4.1, 13.7, 13.2, 2.8], III 35.2 [10.1, 3.7, 10.2, 9.1, 2.1], IV 36.0 [10.2, 3.1, 10.2, 10.1, 2.4]. Leg formula: II I IV III. Chelicerae with 3 promarginal and 5 retromarginal teeth, and 10 intermarginal denticles.</p> <p> <i>Palp.</i> As in diagnosis, with cymbium slightly longer than tibia, BRB present, vRTA shorter than dRTA, dRTA pointed and vRTA rounded in retrolateral view, PET slightly shorter than RET, and both are long and slim, and not covering each other in ventral view. Conductor hyaline and extending beyond or roughly the same length as ET (Figs 1A–C).</p> <p> <i>Colouration.</i> Light brown to beige in body with dim to dark grey bands on carapace and legs. Dorsal opisthosoma with chevron shaped markings (Fig. 11A).</p> <p> <b>Female</b> (paratype): <i>Measurements.</i> TL 13.5, PL 7.2, PW 6.3, AW 3.6, OL 6.3, OW 4.5. <i>Eyes.</i> AME 0.31, ALE 0.80, PME 0.50, PLE 0.97, eye inter distances:AME-AME 0.18, AME-ALE 0.07, PME-PME 0.27, PME-PLE 0.63, AME-PME 0.32, ALE-PLE 0.71, clypeus-AME 0.87, clypeus-ALE 0.28. <i>Measurements of palp and legs.</i> Palp 10.4 [3.1, 1.7, 2.3, 3.3], I 32.8 [9.1, 3.8, 9.6, 8.1, 2.2], II [missing], III 29.6 [8.7, 3.5, 8.2, 7.1, 2.1], IV 31.1 [9.1, 3.6, 8.5, 7.8, 2.1]. <i>Spination.</i> Palp 131, 101, 2221, 1014; Legs (leg II missing): Femur I, III 323, IV 321; Patella I, III–IV 001; Tibia I 111(10), III 1118, IV 2126; Metatarsus I, III 1014, IV 3036. Chelicerae with 3 promarginal and 5 retromarginal teeth, cheliceral furrow with around 20 intermarginal denticles.</p> <p> <i>Female copulatory organ.</i> As in diagnosis, with EF wider than long, AB absent, CO small, MEP diagonaly extended (Fig. 2A); TC extending laterad beyond FC and SC (Figs 2B–C).</p> <p> <i>Colouration.</i> Same as for male but with lighter colour bands on legs (Fig. 11B).</p> <p> <b>Distribution and habitat preferences.</b> Known only from the type locality (Fig. 13). Specimens were collected at night on boulders and rocks. The type locality was an oasis in a small canyon dominated by palm trees (Fig. 11C). An unknown species of the genus <i>Eusparassus</i> Simon, 1903 was sympatrically sampled on plants and vegetation.</p>Published as part of <i>Moradmand, Majid, Wesal, Mohammad Wasil & Kulkarni, Siddharth, 2023, Taxonomic revision of the troglophile Spariolenus spiders (Araneae: Sparassidae) in South and West Asia, pp. 77-95 in Zootaxa 5380 (1)</i> on pages 78-81, DOI: 10.11646/zootaxa.5380.1.6, <a href="http://zenodo.org/record/10212761">http://zenodo.org/record/10212761</a>
Energy efficient implementation of 16-Bit ALU using block enabled clock gating technique
No full textTask allocation for networked autonomous underwater vehicles
No full textUnderwater Acoustic Sensor Networks (UW-ASNs) consist of stationary or mobile nodes such as Autonomous Underwater Vehicles (AUVs), which may be classified as propeller-driven vehicles and gliders, that are equipped with a variety of sensors for performing collaborative monitoring tasks. UW-ASNs are envisioned for missions like oceanographic data collection, ocean sampling, offshore exploration, disaster prevention, tsunami and seaquake warning, assisted navigation, distributed tactical surveillance, and mine reconnaissance. A task allocation and optimization framework for networked AUVs that participate as a team to accomplish such missions is developed in this work. These missions entrusted to the AUVs are sometimes critical to human life and property, are bound by severe time and energy constraints, and involve a high degree of inter-vehicular communication. The objective of the framework is to form the best possible team, which is a subset of all deployed AUVs that is best suited to accomplish the mission, while adhering to the constraints. Successful completion of the mission is dependent on effective communication between the networked AUVs and to achieve this a geocasting based networking framework is also proposed. Research specific to this area has been limited. Hence, a framework based on energy minimization for the team of AUVs to complete the mission in given time bound is proposed. Further, the effect of size of geocast region, effect of underwater current on the choice of geocast region and on localized nature of the problem, and the performance of Propeller Driven Vehicles (PDVs) and gliders is compared.M.S.Includes abstractIncludes bibliographical referencesby Indraneel S. Kulkarn
Linear Loop Transformations in Optimizing Compilers for Parallel Machines
No full textWe present the linear loop transformation framework which is the formal basis for state of the art optimization techniques in restructuring compilers for parallel machines. The framework unifies most existing transformations and provides a systematic set of code generation techniques for arbitrary compound loop transformations. The algebraic representation of the loop structure and its transformation give way to quantitative techniques for optimizing performance on parallel machines. We discuss in detail the techniques for generating the transformed loop and deriving the desired linear transformation. Key Words: Dependence Analysis, Iteration Spaces, Parallelism, Locality, Load Balance, Conventional Loop Transformations, Linear Loop Transformations Corresponding author. y Parallel Systems Group, Department of Computer Science, 10 King's College Road, University of Toronto, Toronto, ON M5S 1A4, CANADA. Email: [email protected] Kulkarni and Stumm: Linear Loop Transformations 2 1..
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