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Letteratura scientifica selezionata sul tema "Exchange"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 31 luglio 2024

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Articoli di riviste sul tema "Exchange"

Mrzygłod, Urszula, e Sabina Nowak. "Stock Exchanges Go Public. The Case of Warsaw Stock Exchange". JOURNAL OF INTERNATIONAL STUDIES 6, n. 2 (20 novembre 2013): 111–23. http://dx.doi.org/10.14254/2071-8330.2013/6-2/10.

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PRDIĆ, NEDELJKO. "STOCK EXCHANGE INDICES AS AN INVESTMENT INDICATOR". Kultura polisa, n. 44 (8 marzo 2021): 267–78. http://dx.doi.org/10.51738/kpolisa2021.18.1r.4.02.

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Abstract (sommario):

Stock exchanges are such specialised market institutions where standardised and tradable goods are traded and exchanged, which means precisely defining the quality and all other performances of goods. Trading is enabled by stock exchange customs and strict rules within the law. Stock exchange indices are the basic indicator of the importance of the stock market in the market on the basis of which decisions on investments in the stock market are made. The aim of this paper is to systematise the knowledge about the historical role of commodity exchanges on the market, but also to indicate the importance of the development of information technologies on the modern significance of stock exchanges. The results of the research show that stock exchange indices are the basic indicator of the state and development of the commodity market and investment tendencies. The conclusion is that stock exchange indices are an important factor in the development of the commodity market with special emphasis on their importance in agriculture. They are an indicator of economic trends and an indicator of investment.

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Roto, Roto, Iqmal Tahir e Umi Nur Sholikhah. "SYNTHESIS OF HYDROTALCITE Zn-Al-SO₄ AS ANION EXCHANGER AND ITS APPLICATION TO TREAT OF POLLLUTANT CONTAINED HEXACYANOFERRAT(II)". Indonesian Journal of Chemistry 8, n. 3 (17 giugno 2010): 307–13. http://dx.doi.org/10.22146/ijc.21583.

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Synthesis of Zn-Al-SO4 hydrotalcite and its application as anion exchanger for hexacyanoferrat (II) have been studied. Synthesis of Zn-Al-SO4 hydrotalcite was carried out by stoichiometric method and hydrothermal treatment. Sulphate in hydrotalcite interlayer was exchanged by hexacyanoferrat (II) that was assumed as pollutant. Kinetics of ion exchange was also investigated. The product of ion exchange was characterized by XRD, IR spectrophotometry and atomic absorption spectrometry. Zn-Al-SO4 hydrotalcite can be obtained by stoichiometric method at pH 8 and followed by hydrothermal treatment. The chemical formula of the hydrotalcite was Zn0.74Al0.26(OH)1.74(SO4)0.13.0.52H2O. The hexacyanoferrat (II) anion could exchange sulphate in hydrotalcite interlayer as showed by IR spectra and XRD patterns. The anion exchange capacity was 645.35 meq/100 g, and the kinetics of ion exchange reaction was first order with k = 5 x 10-5 s-1. It showed that Zn-Al-Fe(CN)6 could be regenerated easily, so it has been regenerate frequently. Keywords: hydrotalcite, anion exchanger, hexacyanoferrat

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Santos, Jader, André Timpanaro e Gabriel Landi. "Joint Fluctuation Theorems for Sequential Heat Exchange". Entropy 22, n. 7 (12 luglio 2020): 763. http://dx.doi.org/10.3390/e22070763.

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We study the statistics of heat exchange of a quantum system that collides sequentially with an arbitrary number of ancillas. This can describe, for instance, an accelerated particle going through a bubble chamber. Unlike other approaches in the literature, our focus is on the joint probability distribution that heat Q 1 is exchanged with ancilla 1, heat Q 2 is exchanged with ancilla 2, and so on. This allows us to address questions concerning the correlations between the collisional events. For instance, if in a given realization a large amount of heat is exchanged with the first ancilla, then there is a natural tendency for the second exchange to be smaller. The joint distribution is found to satisfy a Fluctuation theorem of the Jarzynski–Wójcik type. Rather surprisingly, this fluctuation theorem links the statistics of multiple collisions with that of independent single collisions, even though the heat exchanges are statistically correlated.

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Shaimerdenova, К. М., E. R. Schrager, A. S. Tussypbaeva e Zh K. Nausharban. "Investigation of heat exchange processes in vertically arranged heat exchangers". Bulletin of the Karaganda University. "Physics" Series 94, n. 2 (28 giugno 2019): 66–72. http://dx.doi.org/10.31489/2019ph2/66-72.

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Langer, G. A., e T. L. Rich. "A discrete Na-Ca exchange-dependent Ca compartment in rat ventricular cells: exchange and localization". American Journal of Physiology-Cell Physiology 262, n. 5 (1 maggio 1992): C1149—C1153. http://dx.doi.org/10.1152/ajpcell.1992.262.5.c1149.

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Application of a new rapid perfusion (up to 4.8 ml/s) technique to 45Ca-labeled ventricular cells from adult rat heart has defined a discrete intracellular calcium (Ca) compartment with the following characteristics: 1) its exchange is absolutely dependent on operation of the Na-Ca exchanger, i.e., its isotopic content remains constant during washout in the absence of Na and Ca and is released only upon addition of Na and Ca to the perfusate. 2) At an extracellular Ca concentration of 1.0 mM it contains 350 mumol/kg dry wt cells and exchanges with half time of 650 ms. Ca flux from the compartment is 385 mumol.kg dry wt-1.s-1 or 20% of the total nonperfusion limited flux from the cells. 3) Its content is decreased 19% by 10 mM caffeine but not diminished by exposure of the cells to 10(-6) M ryanodine and not accessible to lanthanum (La) displacement. 4) Only limited exchange occurs when only Na or Ca is present and exchange is virtually eliminated by substitution of extracellular Li for extracellular Na. 5) Replacement of Na and Ca to the perfusate after various periods of removal produces no contraction (despite immediate Ca release from the cell). The results define a discrete intracellular Ca compartment which exchanges only via the Na-Ca exchanger. It is not La accessible, not in the ryanodine- or caffeine-sensitive portions of the sarcoplasmic reticulum, not in the mitochondria nor at the myofilaments, but may reside at inner sarcolemmal leaflet binding sites.

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Confalonieri, Giorgia, Giovanna Vezzalini, Filippo Quattrini, Simona Quartieri, Catherine Dejoie e Rossella Arletti. "Ce-exchange capacity of zeolite L in different cationic forms: a structural investigation". Journal of Applied Crystallography 54, n. 6 (25 novembre 2021): 1766–74. http://dx.doi.org/10.1107/s1600576721010827.

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Cerium exchange by microporous materials, such as zeolites, has important applications in different fields, for example, rare earth element recovery from waste or catalytic processes. This work investigated the Ce-exchange capacity of zeolite L in three different cationic forms (the as-synthesized K form and Na- and NH4-exchanged ones) from a highly concentrated solution. Chemical analyses and structural investigations allowed determination of the mechanisms involved in the exchanges and give new insights into the interactions occurring between the cations and the zeolite framework. Different cation sites are involved: (i) K present in the original LTL in the cancrinite cage (site KB) cannot be exchanged; (ii) the cations in KD (in the 12-membered ring channel) are always exchanged; while (iii) site KC (in the eight-membered ring channel) is involved only when K+ is substituted by NH4 +, thus promoting a higher exchange rate for NH4 + → K+ than for Na+ → K+. In the Ce-exchanged samples, a new site occupied by Ce appears in the centre of the main channel, accompanied by an increase in the number of and a rearrangement of H2O molecules. In terms of Ce exchange, the three cationic forms behave similarly, from both the chemical and structural point of view (exchanged Ce ranges from 38 to 42% of the pristine cation amount). Beyond the intrinsic structural properties of the zeolite L framework, the Ce exchange seems thus also governed by the water coordination sphere of the cation. Complete Ce recovery from zeolite pores was achieved.

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Tlabela, Kholadi, Anneli Douglas e Felicité Fairer-Wessels. "Generating Opportunities For Tourism Businesses Through Information Exchanges with Visitor Information Centres in South Africa". African Journal of Hospitality, Tourism and Leisure, n. 11(1)2022 (28 febbraio 2022): 221–38. http://dx.doi.org/10.46222/ajhtl.19770720.222.

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Information exchange is a process through which information, experience and skills are exchanged among stakeholders. While previous studies acknowledge that Visitor Information Centres (VICs) exchange information with various stakeholders, it remains unclear how this exchange contributes to economic opportunities for tourism businesses. The objective of the study is therefore to ascertain whether the information that VICs and tourism businesses exchanges contributes to economic opportunities. A survey was distributed to tourism businesses listed in the databases of government-owned VICs in South Africa. The results show that VICs and tourism businesses exchange information and that this exchange generates economic opportunities for businesses. The results also identify factors in the information exchange process that are predictors of economic opportunities. Based on the results, VIC staff should use the exchange of information as a platform through which they may generate economic opportunities for businesses. In their exchange of information, VIC staff should understand the information needs of tourism businesses and provide them with visitor-support information that is extensive, useful and according to their preferences. Consequently, staff can contribute to government’s plan of improving the lives of businesses in areas in which they operate.

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Ausubel, Lawrence M., e Thayer Morrill. "Sequential Kidney Exchange". American Economic Journal: Microeconomics 6, n. 3 (1 agosto 2014): 265–85. http://dx.doi.org/10.1257/mic.6.3.265.

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The traditional literature on kidney exchange assumes that all components of the exchange must occur simultaneously. Unfortunately, the number of operating rooms required for concurrent surgeries poses a significant constraint on the beneficial exchanges that may be attained. The basic insight of this paper is that incentive compatibility does not require simultaneous exchange; rather, it requires that organ donation occurs no later than the associated organ receipt. Using sequential exchanges may relax the operating room constraint and thereby increase the number of beneficial exchanges. We show that most benefits of sequential exchange can be accomplished with only two concurrent operating rooms. (JEL D47, I11)

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Llamas-Guzmán, Luz P., Elena Lazos Chavero, Hugo R. Perales Rivera e Alejandro Casas. "Seed Exchange Networks of Native Maize, Beans, and Squash in San Juan Ixtenco and San Luis Huamantla, Tlaxcala, Mexico". Sustainability 14, n. 7 (23 marzo 2022): 3779. http://dx.doi.org/10.3390/su14073779.

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Seed exchange networks among farmers favor circulation of crop varieties and have been discussed as an effective means of crop diversity conservation. This study aims to document the processes and structure of seed exchange networks of native maize, beans, and squash among farmers and other participating sectors (local market or seed banks), analyzing their influence on agrobiodiversity conservation in the municipalities of Ixtenco and Huamantla, in the Mexican state of Tlaxcala. Through interviews, questionnaires, and social network analysis, nodal farmers were identified. In the maize network, five nodal farmers were detected, the blanco maize being the most commonly exchanged seed. In the bean network, three nodal farmers were identified, with amarillo beans as the most exchanged seed. In the squash network, no nodal farmer was identified. For maize and beans, the greater the number of exchanges, the greater the varieties exchanged. The local market of Huamantla and the Vicente Guerrero seed bank are relevant seed sources. The nodal farmers propitiate circulation of a large number of seed varieties in the exchange networks and contribute to maintenance and conservation of agrobiodiversity.

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Tesi sul tema "Exchange"

Altaf, Saadia, e Ghenadie Cospormac. "Demutualization of stock exchanges : A case study : London Stock Exchange and Hong Kong Stock Exchange". Thesis, University of Skövde, School of Technology and Society, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-3129.

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The focus of this study is to evaluate the impact of corporate ownership structure on the overall performance of stock exchanges. This study distinguishes in particular mutual versus demutualized ownership. London Stock Exchange and Hong Kong Stock Exchange are chosen as study cases, because London Stock Exchange is one of the world leading stock exchanges and Hong Kong Stock Exchange is definitely one of the most important emerging market stock exchanges. That is why the results obtained by comparing these two stock exchanges could serve as good indicator in understanding the effects of demutualization process on the whole stock exchange sector and retain the subtle differences in micro-behavior of the stock exchanges undergone the same transformation.

In this paper the simple descriptive statistics is used as the method of analysis, in association to a profound review of the literature in this area. The data illuminate the fact that demutualized stock exchanges hold a stronger operating performance and a better performance in term of shareholder’s return than mutual exchanges. The result is generally in line with the basic theories in the area of corporate governance and empirical studies in this specific area like Aggarwal (2006), Mendiola and O’Hara (2003) and Hart and Moore (1996).

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Menke, Susan Diane. "Metaphors of exchange and the Shanghai stock market". online access from Digital Dissertation Consortium access full-text, 2000. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?9971606.

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Sun, Wei. "THREE ESSAYS ON EXCHANG RATES AND EXCHANGE RATE POLICY". Lexington, Ky. : [University of Kentucky Libraries], 2006. http://lib.uky.edu/ETD/ukyecon2006d00396/dissertationWS.pdf.

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Thesis (Ph. D.)--University of Kentucky, 2006.
Title from document title page (viewed on May 8, 2006). Document formatted into pages; contains vii, 143 p. : ill. Includes abstract and vita. Includes bibliographical references (p. 133-142).

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Winn, Roland. "Trading halts and the quality of exchange traded markets". Thesis, The University of Sydney, 2000. https://hdl.handle.net/2123/27742.

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This thesis investigates the effects of intraday halts in trading on the market quality of the Australian Stock Exchange and the Sydney Futures Exchange. This is the first such examination of halts on the Australian marketplace. This thesis contributes to earlier research in two ways. Firstly, more refined measurement of different characteristics of halts is undertaken in order to better control for factors which have confounded prior research. Secondly, the thesis examines changes in halt practices in Australia. Analysis of these changes provides a more direct and natural examination of halts. Earlier studies have used various proxies to estimate what normal trading behaviour would be if halts were removed. The evidence presented here indicates that trading around halts is characterised by excess volatility and increased bid—ask spreads, both of which are indicative of greater uncertainty. It is concluded that halts are detrimental to the quality of a market due to a loss of price discovery. This conclusion is robust to the presence of information, whether halts are anticipated, the trading environment, and the use of particular reopening mechanisms.

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Ren, Peter. "An Analysis of Market Efficiency for Exchange-traded Foreign Exchange Options on an Intraday Basis". Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc801929/.

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This study examines the comparative magnitude of disturbances in intraday data for exchange traded foreign exchange (FX) options. An in-depth time series analysis on the frequency and extent of discrepancies in the disturbances is conducted. The purpose of this study is twofold. First, using intraday data and trading volume, this study attempts to determine whether both put-call parity and lower boundary conditions consistently hold for exchange traded options written on U.S. dollar denominated options on the Euro trading on the Philadelphia Stock Exchange (PHLX). Second, this study attempts to investigate the magnitude of any discrepancies that may exist due to a temporary cessation of either put-call parity or lower boundary conditions. Intraday (tick-by-tick) bid prices, ask prices, and trading volume on U.S. dollar denominated European style call options and put options on the Euro are obtained. Option data is collected through a Structured Query Language (SQL) request from the Bloomberg database. Corresponding tick-by-tick spot rates for the underlying exchange rate are obtained for the same time period. Tick-by-tick 3-month Treasury bill rates are obtained to for use as the relevant risk-free interest rate. The primary data set spans an approximate one month period from 11/1/2011 to 12/6/2011. Call and option pricing data for near-the-money exercise prices are obtained for options expiring in December 2011, January 2012, February 2012, March 2012, June 2012, and September 2012. A total of 7,212 ticks (minutes) are analyzed for the conversion strategy and 7,209 ticks are analyzed for the reversal strategy. The data is structured into an unbalanced panel data set (cross-sectional time series data) using put-call pairs as the cross sectional units and ticks as the time-series unit. To test the efficiency of the foreign exchange options market, lower boundary and put-call parity conditions were tested on tick-by-tick currency option data. Analysis shows that lower boundary conditions hold for the overwhelming majority of options, with less than 0.0001% of violations for the observed options. A more detailed econometric analysis was prepared to test the put-call parity condition for currency options. A fixed effects model specification is used to describe the put-call parity relationship. Based on the analysis, it is possible to obtain arbitrage profits in the short run through the use of either a conversion or reversal strategy even after accounting for transaction costs. Taking the first differences of the variables resulted in a model with stationary variables and statistically significant estimators. The inclusion of dummy variables for moneyness did not add significant explanatory power to the deterministic put-call parity relationship. For both first differences of conversion and reversal strategies, the large t-statistics for the slope coefficients and intercept terms indicate a rejection of the null hypothesis, H0: λ0 = 0 and λ1 = 1 after adjusting for standard error. This implies that once transaction costs are adjusted for, put-call parity does not hold. However, the intercept term is only very slightly negative, and the intercept term is only slightly less than one in both cases. This implies that when put-call parity is violated, arbitrage profit should be relatively small.

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Guan, Zhao. "The interrelationship between New Zealand stock market and exchange rates a dissertation submit [sic] to Auckland University of Technology in fulfilment of the requirements for the degree of Master of Business (MBus), 2008 /". Click here to access this resource online, 2008. http://hdl.handle.net/10292/481.

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Golotvina, Natalia. "Essays on real exchange rates and exchange rate arrangements /". For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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Demetriou, Eleni. "Effects of exchange rate on chemical exchange saturation transfer". Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10051323/.

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The general work presented in this thesis describes the implementation and optimization of CEST MRI techniques on a preclinical 9.4 T MRI scanner for quantifying the chemical exchange rate or the exchange relaxation term both in vitro and in pathological conditions. A novel pulse sequence for measuring chemical exchange rates through a progressive saturation recovery process, called PRO-QUEST (PROgressive saturation for Quantifying Exchange rates using Saturation Times) has been developed. A complete theoretical framework has been set up, and the exchange rates calculated in several aminoacids using PRO-QUEST were compared and found in good agreement with standard methods. A reduction of scan time from 58min to 16min has been obtained using PRO-QUEST for measurement in both healthy and infarcted rat after 24 hours and revealed that imaging specificity to ischemic acidification was substantially increased relative to standard APT-weighted imaging. The second part of this thesis describes the development of CEST contrast agents based on liposome encapsulation. For this work a concise analytical model has been developed for characterizing the liposomal contrast. In addition, combining this analytical model with measurements of the CEST signal enhancement using liposomes as a model membrane system provides a new technique for studying membrane permeability. All theoretical developments are included as part of this second major chapter. The final part of the thesis describes applications of CEST and high-resolution magnetic resonance spectroscopy for studying prion protein misfolding and neurodegeneration in Prion disease. Here alterations in CEST signal are detected before structural changes or any clinical signs of Prion disease, most likely based on changes in exchange rates, which is encouraging for translation of CEST imaging for early detection of neurodegenerative processes. Thus, CEST signal displays different patterns at different stages of the disease indicating the potential of using CEST to separate different groups of Prion-infected mice.

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Yuan, Chunming. "Essays on exchange rate behavior and financial anomalies". Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1621833961&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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Hwang, Yu-Ning. "Essays on real exchange rate dynamics and exchange rate regime /". Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/7509.

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Libri sul tema "Exchange"

Mahama, Ibrahim. Ibrahim Mahama, Exchange-Exchanger (1957-2057). Köln: Walther König, 2017.

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Trifonov, I͡Uriĭ Valentinovich. Exchange. London: Methuen, 1990.

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John, Davis. Exchange. Buckingham: Open University Press, 1992.

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J, Davis. Exchange. Buckingham: Open University, 1992.

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Fund, International Monetary. Exchange arrangements and exchange restrictions. Washington, D.C: International Monetary Fund, 1989.

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Associates, Economic Research, a cura di. The Kuala Lumpur Stock Exchange: The separation of the Kuala Lumpur Stock Exchange from the Singapore Stock Exchange. [Kuala Lumpur?]: Economic Research Associates, 1989.

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Ann, Saunders. The Royal Exchange. London: Guardian Royal Exchange, 1991.

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Devereux, Michael B. Exchange rate pass-through, exchange rate volatility, and exchange rate disconnect. Cambridge, MA: National Bureau of Economic Research, 2002.

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Exchange, Eastern Caribbean Securities. Eastern Caribbean Securities Exchange: ECSE. St. Kitts, W.I: ECSE, 2001.

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Marr, Melissa. Ink Exchange. New York: HarperCollins, 2009.

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Capitoli di libri sul tema "Exchange"

Algesheimer, René, Andreas Herrmann e Marcus Dimpfel. "Exchange and Exchange Relationships". In The Digital Economy — Anspruch und Wirklichkeit, 117–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-17032-4_8.

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Wilson, Robert B. "Exchange". In The World of Economics, 237–47. London: Palgrave Macmillan UK, 1991. http://dx.doi.org/10.1007/978-1-349-21315-3_32.

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Chipperfield, J. R. "Exchange". In Inorganic Reactions and Methods, 395–96. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145289.ch174.

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Weik, Martin H. "exchange". In Computer Science and Communications Dictionary, 546. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_6482.

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Kimmich, Rainer. "Exchange". In NMR, 216–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60582-6_23.

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Wilson, Robert B. "Exchange". In The New Palgrave Dictionary of Economics, 1–8. London: Palgrave Macmillan UK, 1987. http://dx.doi.org/10.1057/978-1-349-95121-5_136-1.

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Wilson, Robert B. "Exchange". In The New Palgrave Dictionary of Economics, 1–10. London: Palgrave Macmillan UK, 2008. http://dx.doi.org/10.1057/978-1-349-95121-5_136-2.

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Mochrie, Robert. "Exchange". In Intermediate Microeconomics, 369–92. London: Macmillan Education UK, 2016. http://dx.doi.org/10.1007/978-1-137-09166-6_20.

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Wilson, Robert B. "Exchange". In The New Palgrave Dictionary of Economics, 4111–20. London: Palgrave Macmillan UK, 2018. http://dx.doi.org/10.1057/978-1-349-95189-5_136.

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Sadr, Seyed Kazem. "Exchange". In The Economic System of the Early Islamic Period, 221–43. New York: Palgrave Macmillan US, 2016. http://dx.doi.org/10.1057/978-1-137-50733-4_10.

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Atti di convegni sul tema "Exchange"

Albert, Eliot Robin Bruce. "Impact of Temperature Cross in Feed Bottom Exchanger". In Gas & Oil Technology Showcase and Conference. SPE, 2023. http://dx.doi.org/10.2118/214169-ms.

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Abstract The feed bottom exchanger is normally applied to improve the heat recovery, thereby reducing the external heat addition by means of live steam, re-boiler duty, or fired heater duty. A typical approach to heat integration to maximize the heat recovery using feed bottom exchangers would require overcoming the temperature cross in the exchangers. Thermodynamically, heat exchange beyond the cross temperature in a heat exchanger which is not truly countercurrent, is actually not possible. Hence penalty by means of excess area (extra shell) is required to overcome the cross temperature. Conventionally E-shells in series are applied to facilitate the heat exchange beyond the temperature cross. The F-shell exchanger, which is truly countercurrent, can also be used to achieve the same, but constrains such as physical and thermal leakage limit the usage. Recent advancement by the use of twisted tubes in F shell, avoids the physical leakage, because twisted tube bundle is a baffle free design. For the case under study, the heat exchange beyond the temperature cross is not likely to benefit. Hence the use of F shell exchanger will not be attractive. To overcome the temperature cross, the exchanger design is tuned by increasing number of passes or by increasing the number of exchangers in series, enabling more area requirement. An alternative proposal of heat exchange up to the temperature cross is delineated. The parameters that affect/impact the scenario are discussed. The feed bottom exchanger commonly used in units is hydro-treater reactor, amine regenerator and sour water stripper. In the present investigation Sour Water Stripper (SWS) is considered for the case studies.

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Li, Yu-Shan, Toshiya Yuhara, Kunio Tada e Yasuyuki Sakaguchi. "Characteristics of low-propagation-loss LiTaO3 optical waveguides proton exchanged in pyrophosphoric acid". In Integrated Photonics Research. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/ipr.1990.we3.

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Proton-exchanged LiTaO3 waveguides1 fabricated by both simple one-step proton exchange2 and similar proton exchange followed by annealing3 in benzoic acid were reported to have a negligible decrease in the r33 electro-optic coefficient. It was also reported that the propagation loss was reduced in pyrophosphoric acid proton-exchanged LiNbO3 waveguides.4

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Haney, Michael W., James J. Levy e Ravindra A. Athale. "Cascadable optical shuffle-exchange network". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.tux3.

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A cascadable shuffle-exchange network is proposed that couples the optical folded perfect shuffle (FPS) concept1 with modulator-based exchange/bypass switches and avoids the need for optical signal regeneration at each stage. The network is based on the optically efficient version of the FPS.2 For switching, the two-dimensional array of signals is processed pairwise. Each signal passes through a polarization-switching SLM pixel; rotated polarization corresponds to the "exchange" condition for a pair of signals. Exchanged pairs are routed, via a polarizing beam splitter, to an optical arm that uses imaging lenslet arrays to perform the pairwise exchange operation by inversion of the spatial locations of the elements of the pair. These signals are then recombined with those in the "bypass" arm, via another polarizing beam splitter, and the shuffled and exchanged signals are ready for input into a subsequent stage. Each of the cascaded modules in a multistage network would be identical and potentially made from inexpensive, replicated optics.

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Ye, Peng, Yonggang Zhang, Yanglan Wang, Geying Huang e Lianshui Guo. "A Method of Parametric Model Data Exchange and Reconstruction Based on Feature Script". In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-69067.

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Abstract In collaborative product development (CPD), iterative design with heterogeneous CAD systems is always completed by original equipment manufacturers (OEMs) and other suppliers around the world. Therefore, product data exchanges among different heterogeneous CAD systems are crucial in CPD. However, the major bottleneck is that parametric part models of complex products cannot be exchanged among heterogeneous CAD systems. Published by the International Organization for Standardization (ISO), the Standard for the Exchange of Product Model Data (STEP) is the most common solution for geometry-based data exchanges and product annotations in the manufacturing industry. However, the exchanged STEP parts cannot be modified due to the loss of important information including modeling history, parameters and constraints, which involve the design intent. Therefore, the challenge of modification on exchanged parts needs to be overcome for iterative design in heterogeneous CAD systems of the manufacturing industry. In this paper, a method of part parametric model data exchange and reconstruction based on feature script is proposed. The main idea is features, which include reference features (like datum-plane, datum-axis, and datum-point), shape features (like extrude and rotation), auxiliary features (like fillet and chamfer), and sketch features. These features are taken as the fundamental elements of a part in CAD system, and each is defined by feature script and saved as an extensible markup language (XML) node. The feature modeling history of a part is regarded as a tree structure, which can be converted to an XML tree structure. In part model reconstruction, the proposed method utilizes a persistent naming mechanism and geometric data to identify topological entities, and then realize the persistence of constraint information and parameter driving of part model. The proposed method will be applied to part data exchange and parametric model reconstruction among heterogeneous CAD systems in the following process: (i) the feature tree and parameters of the parametric model are obtained in the source CAD system; (ii) the feature model data is translated into feature script and saved as XML format file; (iii) the feature script file is read, and the parametric model is reconstructed in the target CAD system according to modeling history. In order to verify the accuracy of data exchange and model reconstruction between Creo and CATIA, a method on constraints equivalence analysis and feature comparison is also proposed for analyzing the similarities and differences between source and target parametric models. In addition, a case study is presented to demonstrate the potentials of the proposed method for parametric-feature model exchanges among heterogeneous CAD systems in web-based collaborative product development.

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Jiang, Jin-He, Su-Qing Wang e Sheng-Bin Zhang. "Inorganic Ion Exchanger Mg1.5Ti1.25O4 and Its Ion-exchange Ability". In 2nd Annual International Conference on Advanced Material Engineering (AME 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/ame-16.2016.89.

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Sujoko, Daiva Abisha, Muhammad Fariz Fahreza e Robertus Nugroho Perwiro Atmojo. "Intention to Use Cryptocurrency Exchanges: Assessing Cryptocurrency Exchange Features". In 2023 10th International Conference on ICT for Smart Society (ICISS). IEEE, 2023. http://dx.doi.org/10.1109/iciss59129.2023.10291995.

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Akhremenkov, Andrei A., Anatoliy M. Tsirlin e Vladimir Kazakov. "Thermodynamic Estimate of Minimal Dissipation for Heat Exchange System". In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66883.

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In this paper we consider heat exchange system from point of view of Finite-time thermodynamics. At first time the novel estimate of the minimal entropy production in a general-type heat exchange system with given heat load and fixed heat exchange surface is derived. The corresponding optimal distribution of heat exchange surface and optimal contact temperatures are also obtained. It is proven that if a heat flow is proportional to the difference of contacting flows’ temperatures then dissipation in a multi-flow heat exchanger is minimal only if the ratio of contact temperatures of any two flows at any point inside heat exchanger is the same and the temperatures of all heating flows leaving exchanger are also the same. Our result based on those assumptions: 1. heat transfer law is linear (17); 2. summary exchange surface is given; 3. heat load is given; 4. input tempretures for all flows are given; 5. water equivalents for all flows are given.

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Cino, Alfonso C., Stefano R. Sanseverino, Marc P. De Micheli, Kasem El Hadi, Fernando Cusso e Gines Lifante. "Proton exchange, anneal proton exchange, and reverse proton exchange waveguides in Er:LiNbO 3". In Optoelectronics and High-Power Lasers & Applications, a cura di Seppo Honkanen e Shibin Jiang. SPIE, 1998. http://dx.doi.org/10.1117/12.305401.

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Gottlob, Georg, e Alan Nash. "Data exchange". In the twenty-fifth ACM SIGMOD-SIGACT-SIGART symposium. New York, New York, USA: ACM Press, 2006. http://dx.doi.org/10.1145/1142351.1142358.

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Roth, Alvin E. "Kidney exchange". In EC '13: ACM Conference on Electronic Commerce. New York, NY, USA: ACM, 2013. http://dx.doi.org/10.1145/2482540.2483190.

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Rapporti di organizzazioni sul tema "Exchange"

Boltz, J. C., a cura di. EXCHANGE. Office of Scientific and Technical Information (OSTI), gennaio 1993. http://dx.doi.org/10.2172/6740546.

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Boltz, J. EXCHANGE. Office of Scientific and Technical Information (OSTI), settembre 1992. http://dx.doi.org/10.2172/6965908.

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Boltz, J. C., a cura di. EXCHANGE. Office of Scientific and Technical Information (OSTI), marzo 1993. http://dx.doi.org/10.2172/6557769.

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Devereux, Michael, e Charles Engel. Exchange Rate Pass-Through, Exchange Rate Volatility, and Exchange Rate Disconnect. Cambridge, MA: National Bureau of Economic Research, marzo 2002. http://dx.doi.org/10.3386/w8858.

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Eronen, P., e J. Korhonen. Multiple Authentication Exchanges in the Internet Key Exchange (IKEv2) Protocol. RFC Editor, novembre 2006. http://dx.doi.org/10.17487/rfc4739.

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Roth, Alvin, Tayfun Sonmez e M. Utku Unver. Kidney Exchange. Cambridge, MA: National Bureau of Economic Research, settembre 2003. http://dx.doi.org/10.3386/w10002.

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Fraga, Carlos, Kai-For Mo, David Abrecht, Amanda Casella, Nicolas Uhnak, Zachary Kennedy e Gregg Lumetta. Solvent Exchange. Office of Scientific and Technical Information (OSTI), settembre 2020. http://dx.doi.org/10.2172/1983975.

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Roth, Alvin, Tayfun Sonmez e M. Utku Unver. Pairwise Kidney Exchange. Cambridge, MA: National Bureau of Economic Research, agosto 2004. http://dx.doi.org/10.3386/w10698.

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Hersh, William, Annette Totten, Karen Eden, Beth Devine, Paul Gorman, Steve Kassakian, Susan S. Woods, Monica Daeges, Miranda Pappas e Marian S. McDonagh. Health Information Exchange. Agency for Healthcare Research and Quality, dicembre 2015. http://dx.doi.org/10.23970/ahrqepcerta220.

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Bryden, Harry. Gibraltar Exchange Measurements. Fort Belvoir, VA: Defense Technical Information Center, marzo 1994. http://dx.doi.org/10.21236/ada277821.

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