Готові списки джерел за темами / Matching rates

Добірка наукової літератури з теми "Matching rates"

Автор: Grafiati
Опубліковано: 8 червня 2024

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Статті в журналах з теми "Matching rates":

1

Blasingame, Tom, Erdal Ozkan, Mohan Kelkar, Jennifer Miskimins, and Stephen Rassenfoss. "History Matching of Petroleum Engineering Graduation Rates." Journal of Petroleum Technology 74, no. 03 (March 1, 2022): 28–31. http://dx.doi.org/10.2118/0322-0028-jpt.

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An email discussion among the four members focused on one of several charts created by Tom Blasingame, 2021 SPE president. A summary of their insights follows. Tom Blasingame explained the chart, which led to further discussion. The “reference” trend shown (red) occurs over the period from 1970 to 2000, which peaked at 1,587 BS graduates around 1984. It is a Gaussian probability distribution fitted to the data provided by Lloyd Heinze, professor at Texas Tech University’s Bob L. Herd Department of Petroleum (solid black line), and data extracted from a 1991 paper by John C. Calhoun, who was then at Texas A&M University and previously served as the 1964 SPE president. The reference trend is then shifted in time to the period from 2003 to 2033 (green). The mean and standard deviation of the statistical trends are the same; only the midpoint in time and peak in BS graduates are adjusted for each period. We note an excellent match of the data in the period from 2003 to 2033. Taking the reference trend back in time to the period from 1940 to 1970 (purple trend), we do not get a reasonable match of the data, with the exception of a slump from about 1951 to 1956. It is difficult to explain this feature, other than to note that in this timeframe the US began to import significant quantities of oil. Regardless, we note the statistical trend does capture the beginning and end of this distribution, and we recognize that there is no single peak in the data trend from 1940 to 1970. If we follow the historical trends and the current increase in oil prices and consider the need for oil and gas in the foreseeable future, we predict that the downward trend may stabilize as it did before and level out at the range of 250 graduates a year, while the demand for graduates is much higher. In this scenario, I consider the following positives and negatives. - Negative publicity around fossil fuels and social/political pressure to shut down the oil industry will continue, pulling the graduates’ figures down. - Current energy shortages and price spikes will remind the public that the end of oil and gas is not near, which will start to improve the image of petroleum engineering. - Deepening global economic crises and rising inflation will reduce people’s buying power and move them from highly idealistic to mostly pragmatic decisions. That, combined with the unmatched salary prospect of petroleum engineers with only a 4-year undergraduate degree, will increase the interest in the PE degree. - Considering that oil and gas will remain to be slightly over 50% of the energy mix, and that the energy demand will increase by 47% by 2050, we will need to produce roughly 45% more oil and gas than today. Even with the increased efficiency … we will need more petroleum engineers.
2

Nasreddine, Adam Y., and Robert Gallo. "Applying to Orthopaedic Residency and Matching Rates." Journal of Bone and Joint Surgery 101, no. 24 (December 2019): e134. http://dx.doi.org/10.2106/jbjs.18.00371.

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3

Akay, M., and H. H. Szeta. "Analyzing fetal breathing rates using matching pursuits." IEEE Engineering in Medicine and Biology Magazine 14, no. 2 (1995): 195–98. http://dx.doi.org/10.1109/51.376759.

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4

Hall, Robert E., and Sam Schulhofer-Wohl. "Measuring Job-Finding Rates and Matching Efficiency with Heterogeneous Job-Seekers." American Economic Journal: Macroeconomics 10, no. 1 (January 1, 2018): 1–32. http://dx.doi.org/10.1257/mac.20170061.

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Matching efficiency is the productivity of the process for matching job-seekers to available jobs. Job-finding is the output; vacant jobs and active job-seekers are the inputs.We develop a framework for measuring matching productivity when the population of job-seekers is heterogeneous. We find that overall matching efficiency declined smoothly over the period from 2001 through 2013. Measures of matching efficiency that neglect heterogeneity among the unemployed and also neglect job-seekers other than the unemployed suggest a large 28 percent decline in efficiency between 2007 and 2009. Most of this apparent decline results from changes in the composition of job-seekers. (JEL E24, J22, J23, J24, J41, J63)
5

Jaffe, Sonia, and Simon Weber. "The effect of meeting rates on matching outcomes." Economic Theory 67, no. 2 (March 24, 2018): 363–78. http://dx.doi.org/10.1007/s00199-018-1113-0.

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6

Al-Husseini, Ahmed, and Sameera Hamd-Allah. "History Matching of Reservoir Simulation Model: a Case Study from the Mishrif Reservoir, Buzurgan Oilfield, Iraq." Iraqi Geological Journal 56, no. 1C (March 31, 2023): 215–34. http://dx.doi.org/10.46717/igj.56.1c.15ms-2023-3-26.

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In petroleum reservoir engineering, history matching refers to the calibration process in which a reservoir simulation model is validated through matching simulation outputs with the measurement of observed data. A traditional history matching technique is performed manually by engineering in which the most uncertain observed parameters are changed until a satisfactory match is obtained between the generated model and historical information. This study focuses on step by step and trial and error history matching of the Mishrif reservoir to constrain the appropriate simulated model. Up to 1 January 2021, Buzurgan Oilfield, which has eighty-five producers and sixteen injectors and has been under production for 45 years when it started in 1976. Reservoir exhibits heterogeneity in porosity and permeability throughout the field, therefore it’s a big challenge to control all reservoir properties during matching process. The historical matching process includes matching field and wells oil and water production rates, water injection rates, water cut, and reservoir static pressure. Finally, the results show that the good matching between simulated model and observed data; oil and water production rates, water injection rates, water cut, and static reservoir pressure which allow for implementing perfect future production forecasting strategies.
7

Lucas, Hannah B., Ian McKnight, Regan Raines, Abdullah Hijazi, Christoph Hart, Chan Lee, Do-Gyoon Kim, Wei Li, Peter H. U. Lee, and Joon W. Shim. "Factors Associated with Mutations: Their Matching Rates to Cardiovascular and Neurological Diseases." International Journal of Molecular Sciences 22, no. 10 (May 11, 2021): 5057. http://dx.doi.org/10.3390/ijms22105057.

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Monogenic hypertension is rare and caused by genetic mutations, but whether factors associated with mutations are disease-specific remains uncertain. Given two factors associated with high mutation rates, we tested how many previously known genes match with (i) proximity to telomeres or (ii) high adenine and thymine content in cardiovascular diseases (CVDs) related to vascular stiffening. We extracted genomic information using a genome data viewer. In human chromosomes, 64 of 79 genetic loci involving >25 rare mutations and single nucleotide polymorphisms satisfied (i) or (ii), resulting in an 81% matching rate. However, this high matching rate was no longer observed as we checked the two factors in genes associated with essential hypertension (EH), thoracic aortic aneurysm (TAA), and congenital heart disease (CHD), resulting in matching rates of 53%, 70%, and 75%, respectively. A matching of telomere proximity or high adenine and thymine content projects the list of loci involving rare mutations of monogenic hypertension better than those of other CVDs, likely due to adoption of rigorous criteria for true-positive signals. Our data suggest that the factor–disease matching rate is an accurate tool that can explain deleterious mutations of monogenic hypertension at a >80% match—unlike the relatively lower matching rates found in human genes of EH, TAA, CHD, and familial Parkinson’s disease.
8

Suchitra, Joyce B., and Nanjaiah Lakshmidevi. "Hospital-acquired infections: are prevention strategies matching incidence rates?" Healthcare infection 14, no. 1 (March 2009): 21–25. http://dx.doi.org/10.1071/hi09001.

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9

Adan, Ivo, and Gideon Weiss. "Exact FCFS Matching Rates for Two Infinite Multitype Sequences." Operations Research 60, no. 2 (April 2012): 475–89. http://dx.doi.org/10.1287/opre.1110.1027.

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10

Kronebusch, Karl. "Matching Rates and Mandates: Federalism and Children's Medicaid Enrollment." Policy Studies Journal 32, no. 3 (August 2004): 317–39. http://dx.doi.org/10.1111/j.1541-0072.2004.00068.x.

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Статті в журналах Дисертації

Дисертації з теми "Matching rates":

1

Furlan, Benjamin, Martin Gächter, Bob Krebs, and Harald Oberhofer. "Democratization and real exchange rates." Wiley, 2016. http://dx.doi.org/10.1111/sjpe.12088.

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In this article, we combine two so far separate strands of the economic literature and argue that democratization leads to a real exchange rate appreciation. We test this hypothesis empirically for a sample of countries observed from 1980 to 2007 by combining a difference-in-difference approach with propensity score matching estimators. Our empirical results reveal a strong and significant finding: democratization causes real exchange rates to appreciate. Consequently, the ongoing process of democratization observed in many parts of the world is likely to reduce exchange rate distortions.
2

Olsen, Karl R. "Matching military skills to civilian jobs : does military training enhance veteran's civilian wage rates? /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA295241.

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Thesis (M.S. in Management) Naval Postgraduate School, March 1995.
Thesis advisor(s): Stephen L. Mehay, Julie A. Dougherty. "March 1995." Includes bibliographical references. Also available online.
3

Chen, Hanyi. "Probabilistic matching systems : stability, fluid and diffusion approximations and optimal control." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/10570.

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In this work we introduce a novel queueing model with two classes of users in which, instead of accessing a resource, users wait in the system to match with a candidate from the other class. The users are selective and the matchings occur probabilistically. This new model is useful for analysing the traffic in web portals that match people who provide a service with people who demand the same service, e.g. employment portals, matrimonial and dating sites and rental portals. We first provide a Markov chain model for these systems and derive the probability distribution of the number of matches up to some finite time given the number of arrivals. We then prove that if no control mechanism is employed these systems are unstable for any set of parameters. We suggest four different classes of control policies to assure stability and conduct analysis on performance measures under the control policies. Contrary to the intuition that the rejection rate should decrease as the users become more likely to be matched, we show that for certain control policies the rejection rate is insensitive to the matching probability. Even more surprisingly, we show that for reasonable policies the rejection rate may be an increasing function of the matching probability. We also prove insensitivity results related to the average queue lengths and waiting times. Further, to gain more insight into the behaviour of probabilistic matching systems, we propose approximation methods based on fluid and diffusion limits using different scalings. We analyse the basic properties of these approximations and show that some performance measures are insensitive to the matching probability agreeing with the results found by the exact analysis. Finally we study the optimal control and revenue management for the systems with the objective of profit maximization. We formulate mathematical models for both unobservable and observable systems. For an unobservable system we suggest a deterministic optimal control, while for an observable system we develop an optimal myopic state dependent pricing.
4

Oliveira, Gabriela Barbosa Sobral de. "The evolutionary origins of impedance-matching hearing in Archosauria." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2014. http://dx.doi.org/10.18452/17065.

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Das impedanzwandelnde Hören ist eine wichtige Verfeinerung des Gehörsystems der Tetrapoden indem es einen Energieverlust während der Schallübertragung vermeidet. Anatomisch ist es durch eine Unterteilung des Foramen Metoticum in eine vordere Fenestra Pseudorotunda und ein hinteres Vagus Foramen charakterisiert. Dieses System trat mehrmals unabhängig in Amniota auf, und obwohl schon vorher vermutet wurde, dass es eine Homoplasie für Archosauria darstellt, wurde diese Hypothese bisher noch nicht geprüft. Demnach wurden 17 Hirnschädel Merkmale für 111 Taxa kodiert und auf einem informellen Supertrees optimiert. Die Analyse ergab, dass die Fenestra Pseudorotunda unbhängig acht Mal in Archosauria auftrat, mit fünf Umkehrungen. Während dieses Merkmal plastisch für Dinosauria ist, es trat nur einmal in Pseudosuchia auf. Eine Tree Shape-Analyse ergab, dass sechs Verschiebungen in den Diversifizierungsraten in Pseudosuchia und sieben in Dinosauria zu finden sind, von denen nur die der Ornithischia mit der Fenestra Pseudorotunda in Beziehung stehen. Viele Zustandsveränderungen erfolgen an der Basis der Dinosauria aber bei Pseudosuchia sind diese vor der Entstehung der Crocodyliformes und an der Basis der Notosuchia und Thalattosuchia konzentriert. Die Korrelationen zwischen Zustandsveränderungen und Verschiebungen sind höher in Dinosauria, während bei Pseudosuchia nur Mesoeucrocodylia eine ähnliche Anzahl aufweist. Daraus folgt, dass das impedanzwandelnde Hören nicht homolog in Archosauria ist, und dass es nicht als Schlüsselinnovation zur Erklärung der Vielfalt betrachtet werden kann, obwohl es eine Rolle in der Diversifizierung der Ornithischia spielte. Insgesamt ist die Anatomie des Hirnschädels der Dinosauria plastischer als die der Pseudosuchia. Die Positionierung des Pterygoid-Quadratum-Komplexes an die Seitenwand des Hirnschädels in Crocodyliformes stellt eine anatomische Beschränkung dar, welche nur von Notosuchia und Thalattosuchia durchbrochen wurde.
Impedance-matching hearing is considered an important refinement of the auditory system of tetrapods because it reduces energy loss during sound transmission. Anatomically, it is characterized by the sub-division of the metotic foramen into a posterior vagus foramen and an anterior fenestra pseudorotunda. Impedance-matching hearing has evolved independently in several tetrapod groups including archosaurs and although it has been suggested that it represents a homoplasy, this hypothesis has never been tested. Therefore, 17 braincase characters were coded for 111 taxa and mapped on an informal supertree. Optimization of the characters revealed that the fenestra pseudorotunda appeared eight times independently in Archosauria, with five reversals. While this character is plastic in dinosaurs, it appeared only once in pseudosuchians. A tree-shape analysis revealed that pseudosuchians had six shifts in diversification rates, while dinosaurs had seven. Of these, only ornithischian ones are correlated to the appearance of impedance-matching hearing. Many of the overall state changes occur at the origin of major dinosaurian clades, but for pseudosuchians they are concentrated prior to the origin of Crocodyliformes and at the origin of Notosuchia and Thalattosuchia. The overall number of correspondences between character state changes and shifts in diversification rates is higher for dinosaurs, whereas in Pseudosuchia only Mesoeucrocodylia has a similar amount. It is thus possible to conclude that impedance-matching hearing is not homologous for archosaurs, and that it cannot be considered a key innovation triggering diversification. However, it may have played some role in ornithischian diversification. In general, the braincase anatomy of dinosaurs is more plastic than that of pseudosuchians. The abutting of the pterygo-quadrate complex against the lateral braincase wall was a strong anatomical constraint for crocodyliforms broken only by notosuchians and thalatosuchians.
5

Berry, Meredith Steele. "Reinforcer Magnitude and Resistance to Change of Forgetting Functions and Response Rates." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1269.

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The present experiment was conducted to investigate the effects of reinforcer magnitude on resistance to disruption of remembering and response rates. Pigeons were exposed to a variable-interval (VI), delayed-matching-to-sample procedure (DMTS) with two components (rich and lean). Specifically, completion of a VI 20 second (s) multiple schedule resulted in DMTS trials in both components. In a DMTS trial, a choice of one of two comparison stimuli (e.g., blue key) results in reinforcement if the choice matches some property of the sample stimulus presented previously. Sample and comparison stimuli are separated by a delay. Four delays (0.1, 4, 8, and 16 s) were used between the sample and comparison stimuli in the study. The difference between rich and lean components was the length of hopper duration following a correct response. The probability of reinforcement following a correct response in both components was .5. Each pigeon was exposed to 50 sessions of initial baseline and then 30 sessions of baseline between each disruptive condition (extinction, intercomponent interval [ICI] food, lighting the houselight during delays, and prefeeding). Separable aspects of the forgetting functions (initial discriminability and rate of forgetting) were examined by determining accuracy at each delay. During baseline, response rates were higher in the rich component relative to the lean. Accuracy decreased as delay increased in both rich and lean components, and accuracy was consistently higher in the rich relative to the lean component. During disruptive conditions, extinction, ICI food, and prefeeding disrupted response rates, but lighting the houselight during the delays had little effect. During the DMTS portion of the procedure, extinction and prefeeding decreased initial discriminability and lighting the houselight during the delay increased rate of forgetting. Intercomponent food had little effect on accuracy. Accuracy in the rich component was more resistant to disruption relative to the lean component during extinction. These results indicate that certain disruptors do not have the same disruptive effect across response rates and accuracy (e.g., ICI food). These data also suggest that when systematic differences in accuracy between rich and lean components are revealed, performance in the rich component tends to be more resistant to disruption.
6

Subramanian, Shiva Shankar [Verfasser], Andreas [Akademischer Betreuer] Herkersdorf, Ulf [Gutachter] Schlichtmann, and Andreas [Gutachter] Herkersdorf. "Memory Efficient Signature Matching in Deep Packet Inspection Applications at Line Rates / Shiva Shankar Subramanian ; Gutachter: Ulf Schlichtmann, Andreas Herkersdorf ; Betreuer: Andreas Herkersdorf." München : Universitätsbibliothek der TU München, 2019. http://d-nb.info/1202921906/34.

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7

Begeot, Jocelyn. "Autour de la stabilité de différents modèles d'appariements aléatoires." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0201.

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Les modèles d'appariements aléatoires représentent de nombreux systèmes stochastiques concrets dans lesquels des éléments de différentes classes sont appariés selon des règles de compatibilités spécifiées. Par exemple, on peut citer les systèmes dédiés à l'allocation d'organes, les sites de recherche d'emplois, de logements, etc. De tels modèles sont toujours associés à un triptyque d'éléments : un graphe connexe, dit de compatibilités, dont les sommets représentent les classes des éléments pouvant entrer dans le systèmeet dont chaque arête relie deux classes compatibles, une politique d'appariements permettant de décider, en cas d'incertitude, quels appariements vont s'effectuer à l'intérieur du système, et un taux d'arrivées selon lequel les éléments entrent en son sein. Dans cette thèse, nous considérons des graphes généralisés, c'est-à-dire que l'on autorise l'appariement de deux éléments de la même classe, et nous étendons donc à ce cadre certains résultats déjà connus dans le cas de graphes simples. La stabilité d'un système régi par un modèle d'appariements est une propriété très importante. En effet, elle assure que les admissions au sein du système étudié sont contrôlées de sorte que les éléments ne restent pas bloqués à l'intérieur et que leur nombre n'augmente pas indéfiniment. Il est donc essentiel que le taux d'arrivées des éléments permette au système d'être stable. Dans ce manuscrit, nous caractérisons de manière algébrique cette zone de stabilité pour certains modèles d'appariements (généraux, généraux avec abandons, bipartis, bipartis étendus) ou de files d'attente, dites skill-based. Par ailleurs, nous démontrons que la politique d'appariements dite First Come, First Matched (FCFM) possède la propriété d'être maximale (généralisée), c'est-à-dire que la zone de stabilité du modèle d'appariements général associé à un graphe de compatibilités et à une politique quelconque est toujours incluse dans celle associée à ce même graphe et à FCFM. Notons que cette dernière coïncide alors avec un ensemble de mesures défini par des conditions purement algébriques. Dans ce cas, la question de l'étude des mesures permettant la stabilité des systèmes régis par un modèle d'appariements revient donc à celle, plus élémentaire, de la caractérisation d'un ensemble déterministe. Nous donnons alors un moyen de construction (simple) des mesures appartenant à celui-ci, ce qui peut s'avérer très utile pour calibrer le contrôle d'accès au système. En effet, la vérification algorithmique qu'une mesure quelconque vérifie ces conditions algébriques nécessite un nombre d'opérations polynomial en le nombre de sommets du graphe, et devient donc très coûteuse à mesure que ce cardinal augmente. Nous explicitons également, sous une forme produit, l'expression de la loi stationnaire de l'évolution temporelle du contenu d'un système stable régi par un modèle d'appariements général et sous la politique FCFM, permettant, notamment, de calculer explicitement des caractéristiques à l'équilibre de systèmes concrets et d'estimer leurs performances en temps long. On peut ainsi, par exemple, calculer la taille moyenne à l'équilibre d'une liste d'attente dans le cadre de dons croisés de reins, ou encore, estimer le temps moyen d'attente sur une interface pair-à-pair ou un site de rencontres.Enfin, les taux d'appariements associés à un modèle d'appariements (général ou biparti étendu) stable sont étudiés. Ils sont définis comme étant les fréquences asymptotiques des appariements réalisés et fournissent un critère de performance des systèmes régis par de tels modèles d'appariements, de même que les propriétés de politique-insensibilité et d'équité de ces taux, qui sont également discutées
Stochastic matching models represent many concrete stochastic systems in which elements of different classes are matched according to specified compatibility rules. For example, we can cite systems dedicated to organs allocation, job search sites, housing allocation programs, etc. Such models are typically associated to a triplet of elements: a connected graph, called compatibility graph, whose vertices represent the classes of elements that can enter the system and whose edges connect two compatible classes, amatching policy which decides the matches to be concretely executed, in case of multiple choices, and an arrival rate according to which the elements enter within it. In this thesis, we consider generalized graphs, meaning that we allow the matching of two elements of the same class, and we therefore extend to this framework some results already known in the case of simple graphs.The stability of a system governed by a matching model is a very important property. It ensures that the admissions within the system under study, are regulated, so that the elements do not accumulate in the system in the long run. It is therefore essential that the arrival rate of the elements allows the system to be stable. In this manuscript, we characterize, algebraically, this stability region for some matching models (general, general with reneging, bipartite, extended bipartite) or skill-based queueing systems.Moreover, we demonstrate that the matching policy called First Come, First Matched (FCFM) has the property of being (generalized) maximal, meaning that the stability region of the general matching model associated with a compatibility graph and with any policy is always included in the one associated with this same graph and ruled by FCFM. Note that this latter then coincides with a set of measures defined by purely algebraic conditions. In this case, the study of stability of the matching model at hand boils down to the more elementary question of characterizing of a deterministic set of measures. We then givea (simple) way to construct the measures belonging to the latter set. This turns out to be very useful for admission control, as checking the algebraic conditions requires a number of operations which is polynomial in the number of vertices of the considered compatibility graph, and therefore becomes very expensive as the number of vertices grows large.We also give, in a product form, the expression of the stationary distribution of the number-in-system process of a stable system governed by a general matching model and under the FCFM policy, allowing, in particular, to explicitly calculate characteristics at equilibrium of concrete systems and to estimate their long-time performance. We can thus, for example, calculate the size average at equilibrium of a waiting list in the case of cross-donation of kidneys, or even, estimate the average waiting time on a peer-to-peerinterface or on a dating website.Finally, the matching rates associated with a stable matching model (general or extended bipartite) are studied. They are defined as the asymptotic frequencies of the executed respective matchings, and provide an insightful performance criterion for the corresponding matching systems, as well as the policy-insensitivity and fairness properties of the matching rates, which are also discussed
8

Diallo, Ibrahima. "Some topics in mathematical finance: Asian basket option pricing, Optimal investment strategies." Doctoral thesis, Universite Libre de Bruxelles, 2010. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210165.

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This thesis presents the main results of my research in the field of computational finance and portfolios optimization. We focus on pricing Asian basket options and portfolio problems in the presence of inflation with stochastic interest rates.

In Chapter 2, we concentrate upon the derivation of bounds for European-style discrete arithmetic Asian basket options in a Black and Scholes framework.We start from methods used for basket options and Asian options. First, we use the general approach for deriving upper and lower bounds for stop-loss premia of sums of non-independent random variables as in Kaas et al. [Upper and lower bounds for sums of random variables, Insurance Math. Econom. 27 (2000) 151–168] or Dhaene et al. [The concept of comonotonicity in actuarial science and finance: theory, Insurance Math. Econom. 31(1) (2002) 3–33]. We generalize the methods in Deelstra et al. [Pricing of arithmetic basket options by conditioning, Insurance Math. Econom. 34 (2004) 55–57] and Vanmaele et al. [Bounds for the price of discrete sampled arithmetic Asian options, J. Comput. Appl. Math. 185(1) (2006) 51–90]. Afterwards we show how to derive an analytical closed-form expression for a lower bound in the non-comonotonic case. Finally, we derive upper bounds for Asian basket options by applying techniques as in Thompson [Fast narrow bounds on the value of Asian options, Working Paper, University of Cambridge, 1999] and Lord [Partially exact and bounded approximations for arithmetic Asian options, J. Comput. Finance 10 (2) (2006) 1–52]. Numerical results are included and on the basis of our numerical tests, we explain which method we recommend depending on moneyness and time-to-maturity

In Chapter 3, we propose some moment matching pricing methods for European-style discrete arithmetic Asian basket options in a Black & Scholes framework. We generalize the approach of Curran M. (1994) [Valuing Asian and portfolio by conditioning on the geometric mean price”, Management science, 40, 1705-1711] and of Deelstra G. Liinev J. and Vanmaele M. (2004) [Pricing of arithmetic basket options by conditioning”, Insurance: Mathematics & Economics] in several ways. We create a framework that allows for a whole class of conditioning random variables which are normally distributed. We moment match not only with a lognormal random variable but also with a log-extended-skew-normal random variable. We also improve the bounds of Deelstra G. Diallo I. and Vanmaele M. (2008). [Bounds for Asian basket options”, Journal of Computational and Applied Mathematics, 218, 215-228]. Numerical results are included and on the basis of our numerical tests, we explain which method we recommend depending on moneyness and

time-to-maturity.

In Chapter 4, we use the stochastic dynamic programming approach in order to extend

Brennan and Xia’s unconstrained optimal portfolio strategies by investigating the case in which interest rates and inflation rates follow affine dynamics which combine the model of Cox et al. (1985) [A Theory of the Term Structure of Interest Rates, Econometrica, 53(2), 385-408] and the model of Vasicek (1977) [An equilibrium characterization of the term structure, Journal of Financial Economics, 5, 177-188]. We first derive the nominal price of a zero coupon bond by using the evolution PDE which can be solved by reducing the problem to the solution of three ordinary differential equations (ODE). To solve the corresponding control problems we apply a verification theorem without the usual Lipschitz assumption given in Korn R. and Kraft H.(2001)[A Stochastic control approach to portfolio problems with stochastic interest rates, SIAM Journal on Control and Optimization, 40(4), 1250-1269] or Kraft(2004)[Optimal Portfolio with Stochastic Interest Rates and Defaultable Assets, Springer, Berlin].


Doctorat en Sciences
info:eu-repo/semantics/nonPublished

9

Li, Tuo. "Fingerprint Identification by Improved Method of Minutiae Matching." Miami University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=miami1484672769912832.

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Thomas, Rhiannon D. "Olfactory matching-to-sample in rats using a novel apparatus /." Electronic version (PDF), 2006. http://dl.uncw.edu/etd/2006/thomasr/rhiannonthomas.pdf.

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Книги з теми "Matching rates":

1

Cecchetti, Stephen G. The equity premium and the risk free rate: Matching the moments. Cambridge, MA: National Bureau of Economic Research, 1991.

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2

Gay, Roger. Absolute matching of expected liabilities of an evolving pension fund using positive holdings of fixed interest securities. Malvern, Australia: Graduate School of Management, Deakin University, 1994.

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Office, General Accounting. Tax administration: Changes to IRS's Schedule K-1 document matching program burdened compliant taxpayers : report to the Chair, Committee on Small Business and Entrepreneurship, U.S. Senate. [Washington, D.C.]: GAO, 2003.

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4

United States. Congress. House. Committee on Government Operations. Commerce, Consumer, and Monetary Affairs Subcommittee., ed. Tax administration: Computer matching could identify overstated business deductions : report to the Chairman, Committee on Government Operations, Subcommitte on Commerce, Consumer, and Monetary Affairs, House of Representatives. Washington, D.C: The Office, 1993.

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5

Ruxton, Graeme D., William L. Allen, Thomas N. Sherratt, and Michael P. Speed. Background matching. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199688678.003.0002.

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Background matching is perhaps the most obvious phenomenon that falls under the label of crypsis. Stevens & Merilaita (2011) describe background matching as situations where ‘the appearance generally matches the colour, lightness and pattern of one (specialized) or several (compromise) background types’. There are fascinating examples of species that behaviourally select their microhabitat and orientation so as to enhance similarity to features of the background, and species that change aspects of their appearance in ways that enhance background matching. The degree of background matching is often imperfect; this is thought to commonly reflect the fact that organisms are viewed against a range of different backgrounds, and so they have evolved appearance traits that offer some degree of matching against several of these. Understanding background matching addresses important issues in evolutionary biology, such as the maintenance of polymorphisms. We discuss how predation rates that depend on the frequency of morphs in the environment may be a common explanation for polymorphic crypsis, and the role search images might play in this process. Achieving highly effective background matching in a complex environment is difficult and this may create room for other types of crypsis.
6

Elwood, Mark. Selection of subjects for study. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199682898.003.0005.

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This chapter discussed principles of subject selection and defines target, source, eligible, entrant and participant populations. Selection issues and selection bias may affect internal validity, external validity, and modify the hypothesis being tested. It shows methods to reduce selection biases and to define participation rate and response rate. Principles for the selection of the exposed or test group and the comparison groups are shown for all studies. In randomised trials, intention-to-treat analysis, contamination, blinding, data monitoring, stopping rules, the CONSORT format, and trial registration are discussed. For observational studies, it shows the purpose of control groups, issues of definition and choice of controls, institutional and community controls, and frequency and individual matching. Many examples are given.
7

Grogan, Colleen, and Christina M. Andrews. Medicaid. Edited by Daniel Béland, Kimberly J. Morgan, and Christopher Howard. Oxford University Press, 2014. http://dx.doi.org/10.1093/oxfordhb/9780199838509.013.013.

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Medicaid’s intergovernmental design with a generous federal matching rate and substantial state discretion has fostered gradual but steady expansions of the program over time. Gradual growth creates a favorable political environment in which each expansion creates a political constituency for Medicaid—among provider groups and enrollees—who then fight against retrenchment. Yet, as program expenditures continue to increase, especially during fiscally distressed times, the partisan divide over the future direction of Medicaid becomes more stark. These are the political dynamics that will define how states struggle with the Affordable Care Act (ACA) Medicaid expansion and also how states attempt to provide long-term care financing and services under their Medicaid programs.
8

Jappelli, Tullio, and Luigi Pistaferri. The Response of Consumption to Income Risk. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780199383146.003.0010.

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Tests of the importance of precautionary saving follow several research strategies. One aims to find a variable (or set of variables) that can approximate the variance of the growth rate of consumption. A second strategy seeks to estimate a reduced form for the level of consumption and wealth with proxies for income risk. A third approach simulates the path of consumption and wealth in models with precautionary saving, matching simulations with the observed distribution of wealth and consumption. Other studies provide indirect evidence for or against the precautionary saving hypothesis. Finally, some papers test the null hypothesis of the precautionary saving model (or more generally, self-insurance), in which risks can only be insured via private savings, against specific alternatives in which researchers make the source of market incompleteness explicit (positing, for instance, that it is due to private information).
9

Gupta, Rajesh. Randomized controlled trial evidence for gabapentin in post-herpetic neuralgia. Edited by Paul Farquhar-Smith, Pierre Beaulieu, and Sian Jagger. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198834359.003.0069.

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The landmark paper discussed in this chapter is ‘Gabapentin for the treatment of postherpetic neuralgia: A randomized controlled trial’, published by Rowbotham et al. in 1998. In the study, a 4-week initial period of titration of gabapentin (up to a maximum of 3,600 mg) or matching placebo was given, followed by a further 4-week period at the maximum tolerated dose. The primary efficacy measure was change in average daily pain score from start to finish of the treatment, and secondary measures observed were the average daily sleep score, a short-form McGill Pain Questionnaire, the subject’s global impression of change, the investigator-rated clinical global impression of change, the Short Form 36, a quality-of-life questionnaire, and a Profile of Mood States questionnaire. Subjects receiving gabapentin had significant reduction in daily pain scores as well as improvement in secondary measures of pain, although with an increased incidence of side effects.
10

Gupta, Pawan. Oxford Assess and Progress: Emergency Medicine. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199599530.001.0001.

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Oxford Assess and Progress is a new and unique revision resource for medical students. Written and edited by clinicians and educational experts the series provides an array of popular assessment questions and extra features, including bonus online questions, to be truly fit for purpose and assessment success! Medical students will benefit from a comprehensive selection of Single Best Answer Questions and Extended Matching Questions designed to test understanding and application of core medical topics. Key professional themes such as decision making, communication and ethics are also teased out to ensure complete revision coverage. Editorials in each chapter unlock difficult subjects. Ideal companions to the best-selling Oxford Handbooks these excellent self-assessment guides can also be used entirely independently. Oxford Assess and Progress: Emergency Medicine doesn't simply reveal the correct or wrong answer. Readers are directed to further revision material via detailed feedback on why the correct answer is best, and references to the Oxford Handbook of Emergency Medicine and resources such as journal articles. Each question is rated out of four possible levels of difficulty, from medical student to junior doctor. Carefully complied and reviewed to ensure quality, students can rely on the Oxford Assess and Progress series to prepare for their exams.

Частини книг з теми "Matching rates":

1

Collina, Natalie, Nicole Immorlica, Kevin Leyton-Brown, Brendan Lucier, and Neil Newman. "Dynamic Weighted Matching with Heterogeneous Arrival and Departure Rates." In Web and Internet Economics, 17–30. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-64946-3_2.

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2

Ledoux, Michel. "Optimal Matching of Random Samples and Rates of Convergence of Empirical Measures." In Lecture Notes in Mathematics, 615–27. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-12244-6_43.

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3

Atkinson, Travis J., and Michael E. Schuckers. "Approximate Confidence Intervals for Estimation of Matching Error Rates of Biometric Identification Devices." In Biometric Authentication, 184–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-25976-3_17.

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4

Leivestad, T., A. Foerster, S. Simonsen, A. Bratlie, E. Thorsby, and O. Geiran. "HLA-DR matching reduces rejection rate in heart transplantation." In Transplant International, 230–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-662-00818-8_59.

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5

Mosleh, Mahmood F., and Mais F. Abid. "Evaluation of Rate Matching of Turbo Code for 3GPP LTE System." In Lecture Notes in Electrical Engineering, 401–10. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7395-3_45.

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6

Qin, Peng, Yiying Zhu, Xiongwen Zhao, and Jiayan Liu. "Sum Rate Maximization for 6G IoT Resource Allocation: A Matching Approach." In Lecture Notes in Electrical Engineering, 86–100. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0390-8_12.

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7

de Lima, Vitor, and Helio Pedrini. "A Very Low Bit-Rate Minimalist Video Encoder Based on Matching Pursuits." In Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications, 176–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16687-7_27.

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8

Yang, Jinsuk, Kyoungsu Oh, and Kiho Youm. "English Vocabulary Learning System Based on Repetitive Learning and Rate-Matching Rule." In Lecture Notes in Computer Science, 189–95. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40216-1_20.

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9

Ridzwan, Mohamed, and Bonavian Hasiholan. "Bottomhole Pressure and Fluid Volume Rate History Matching in the Sandstone Reservoir." In Springer Series in Geomechanics and Geoengineering, 3636–45. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2485-1_331.

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10

Li, Xinyu, Dalin Zhang, Xingguang Zhou, Wenxi Tian, and Suizheng Qiu. "Structure Design and Optimization of the Mass Flow Distribution Device of Downcomer for Fluoride-Salt-Cooled High-Temperature Advanced Reactor – FuSTAR." In Springer Proceedings in Physics, 53–67. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_6.

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AbstractThe new generation of water-free cooling reactors: the FuSTAR system (Fluoride-Salt-cooled high-Temperature Advanced Reactor), mainly proposed by Xi’an Jiaotong University, is at the design stage. So far, the overall parameters of the heat transport system of FuSTAR have been obtained, and there is a pressing need to design and optimize the mass flow distribution device of Downcomer. In this paper, to obtain the specific parameters of structure matching the design values of mass flow rate, the finite element analysis was adopted, combined with the Nelder-Mead algorithm in the nonlinear programming. The results show that the mass flow distribution device with a multiple-port plate structure can achieve the purpose of the values of mass flow rate. Moreover, the mass flow rate is not so sensitive to the geometric parameters of these structures, which means more engineering margin. Based on this research, the detailed structural parameters and physical information about the distribution device were obtained, and the data from numerical tests can be used to build the proxy models to speed up transient analysis programs of FuSTAR.

Тези доповідей конференцій з теми "Matching rates":

1

Ranu, Sayan, Deepak P, Aditya D. Telang, Prasad Deshpande, and Sriram Raghavan. "Indexing and matching trajectories under inconsistent sampling rates." In 2015 IEEE 31st International Conference on Data Engineering (ICDE). IEEE, 2015. http://dx.doi.org/10.1109/icde.2015.7113351.

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2

SALAY, C., and D. ELLIOTT. "Matching engine and aircraft lapse rates for the HSCT." In 29th Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1809.

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3

Arwini, Saleh, and Karl Dunbar Stephen. "A New Method to Improve Convergence Rates with Seismic History Matching." In SPE EUROPEC/EAGE Annual Conference and Exhibition. Society of Petroleum Engineers, 2010. http://dx.doi.org/10.2118/131545-ms.

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4

Barker, Charles E., David Eimerl, and Stephan Velsko. "Temperature-insensitive phase-matched harmonic generation in deuterated L-arginine phosphate." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.tud3.

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Deuterated L-arginine phosphate (dLAP) is a promising new crystal for frequency conversion of near-IR and visible lasers.1 Reported values of the thermal coefficients of refraction of dLAP predict the existence of a unique property: temperature-insensitive phase-matching directions for second-harmonic generation. We used a Nd:YAG laser to measure the thermal rates of change of phase-matching angles in the principal dielectric planes of dLAP. For the type I phase-matching locus, we have found that the phase-matching angle relative to the alpha axis increases at a rate of 248 μrad/°C in the alpha-beta plane and decreases at a rate of 38.3 μrad/°C in the alpha-gamma plane, whereas for the type II phase-matching locus, the phase-matching angle increases at a rate of 237 μrad/°C in the alpha-beta plane and increases at a rate of 30.9 μrad/°C in the alpha-gamma plane. The opposite signs of the thermal rates of change of the type I phase-matching angles verify the existence of temperature-insensitive phase-matching directions in the type I second-harmonic generation phase-matching locus. Discrepancies between the predicted and measured thermal behavior of the dLAP phase-matching loci are attributed to errors in the reported values of the thermal coefficients of refraction.
5

Shankar, Subramanian Shiva, Lin PinXing, Andreas Herkersdorf, and Thomas Wild. "BiSME: A Hardware Coprocessor to Perform Signature Matching at Multi-Gigabit Rates." In 2018 IEEE 29th International Conference on Application-specific Systems, Architectures and Processors (ASAP). IEEE, 2018. http://dx.doi.org/10.1109/asap.2018.8445090.

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6

Geir, Evensen. "On the Formulation of the Ensemble History-Matching Problem." In SPE Reservoir Simulation Conference. SPE, 2023. http://dx.doi.org/10.2118/212232-ms.

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Abstract This paper revisits the formulation of the history-matching problem solved using state-of-the-art ensemble methods. It shows how the standard problem formulation is flawed and ignores crucial components, including a stochastic forcing of the ensemble realizations to account for errors in the historical rates and the apparent dependency of the rate data meaning they have correlated errors in time. Also, the paper shows how we can use iterative ensemble smoothers to solve a consistent formulation for the history-matching problem where we augment the rate-control errors to the state vector and estimate them together with the uncertain geologic model parameters. Updating these errors and then using them to force the reservoir simulations leads to an improved posterior ensemble of prediction models that better cover the observations with more substantial and realistic uncertainty. The new formulation derives directly from the sampling of the Bayes’ posterior. The proposed formulation leads to a weaker but more realistic update of the reservoir model parameters. We avoid overfitting, and have a more realistic representation of the ensemble-prediction uncertainty that better covers the historical rates within their errors.
7

Xue, Longjiang, Yueren Zhu, Yixing Gu, Jun Wu, and Haisong Gu. "“Three rates in one” matching model for lean management of the whole project." In 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), edited by Xuexia Ye. SPIE, 2022. http://dx.doi.org/10.1117/12.2634850.

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8

Kimura, Hideaki, Yoshihito Sakai, Noriko IIyama, and Kiyomi Kumozaki. "Service rate matching optical receiver module with bit rates over 40Gb/s for PS-based WDM PON systems." In LEOS 2008 - 21st Annual Meeting of the IEEE Lasers and Electro-Optics Society (LEOS 2008). IEEE, 2008. http://dx.doi.org/10.1109/leos.2008.4688796.

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9

Bellini Aragon, Nicolas Gabriel, Fernando Martín Villagra, and German Dario Serrano. "Production Rate Calculation Using Choke Correlation, Improving Matching Field Data on Vaca Muerta Formation." In SPE Latin American and Caribbean Petroleum Engineering Conference. SPE, 2023. http://dx.doi.org/10.2118/213124-ms.

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Abstract Usually when the Production Engineer needs to follow a DrawDown Curve to maximize production of the well, a methodology to calculate dynamic pressure at sand face (PWF) is needed. To calculate PWF, the Gas and Liquid Rate and wellhead conditions need. On many occasions, there is no separator to run a production test so, as a consequence, a methodology to calculate production rates becomes vital. This paper uses the choke correlation developed by Bellini et al. to calculate total mass and use a workflow to find Water Cut and GOR using Equation of state to split total mass in Gas, Oil and Water mass, and transform them to volumetric rates. In Non-Conventional fields, wellhead chokes are widely used to, for example: regulate the flow rate of the well, to impose sufficient back pressure on the face of the sand so as not to exceed values excessive drawdown. Many authors use choke correlation to find Gas or Liquid Rates but not all at same time and uses many times wrong correlation with error higher than 20%. The workflow presented in this paper, combines high confidence multiphase choke correlation to predict mass rate and use Equation of State (EOS) to predict GOR and Water Cut relations, this combinations of both make sure best confidence calculations. This new workflow was tested with several oil wells at non-Conventional reservoir and its performance is more confidence to existing methodology used nowadays. The Volumetric rates calculation need to use the best technical practices combining fluids thermodynamic and production knowledge to reach the minimal error we can do. Examples and back test of volumetric rate calculation vs separator measurements on wells from "Vaca Muerta" Formation, will be compared a showed as result of this job. Finally, an application of Well performance analysis will be showed, in order to evaluate choke sensitivities to maximize liquid production rate and maintain Well DD into optimal Drawdown Curves to make sure maximize EUR as we can.
10

Prates, Raphael, and William Robson Schwartz. "Matching People Across Surveillance Cameras." In XXXII Conference on Graphics, Patterns and Images. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/sibgrapi.est.2019.8306.

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This work addresses the person re-identification problem, which consists on matching images of individuals captured by multiple and non-overlapping surveillance cameras. Works from literature tackle this problem proposing robust feature descriptors and matching functions, where the latter is responsible to assign the correct identity for individuals and is the focus of this work. Specifically, we propose two matching methods: the Kernel MBPLS and the Kernel X-CRC. The Kernel MBPLS is a nonlinear regression model that is scalable with respect to the number of cameras and allows the inclusion of additional labelled information (e.g., attributes). Differently, the Kernel X-CRC is a nonlinear and multitask matching function that can be used jointly with subspace learning approaches to boost the matching rates. We present an extensive experimental evaluation of both approaches in four datasets (VIPeR, PRID450S, WARD and Market-1501). Experimental results demonstrate that the Kernel MBPLS and the Kernel X-CRC outperforms approaches from literature. Furthermore, we show that the Kernel X-CRC can be successfuly applied in large-scale and multiple cameras datasets.

Звіти організацій з теми "Matching rates":

1

Hall, Robert, and Sam Schulhofer-Wohl. Measuring Job-Finding Rates and Matching Efficiency with Heterogeneous Jobseekers. Cambridge, MA: National Bureau of Economic Research, February 2015. http://dx.doi.org/10.3386/w20939.

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2

Edwards, Wesley, Cornelius Anderson, Alexis Miller, and Kafarra Burden. Teacher-Principal Ethnoracial Matching Keeps New Teachers in their Classrooms. University of North Texas, September 2023. http://dx.doi.org/10.12794/untsw.2178704.

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3

Legal, Diego, and Eric R. Young. Consumer Bankruptcy and Unemployment Insurance. Federal Reserve Bank of Cleveland, May 2024. http://dx.doi.org/10.26509/frbc-wp-202409.

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We quantitatively evaluate the effects of UI on bankruptcy in an equilibrium model of labor market search and defaultable debt. First, we ask whether a standard unsecured credit model extended with labor market search and matching frictions can account for the negative correlation between UI caps and bankruptcy rates observed in the data. The model can account for this fact only if estimated with the employment rate among bankruptcy filers as a target. Not matching this employment rate underestimates the consumption smoothing benefits of UI cap increases, as the model assigns too much importance to unemployment shocks for driving default, and implies large welfare losses from increasing the cap rather than negligible gains. Second, with bankruptcy available, there are significant welfare gains from increasing the replacement rate above the calibrated value, but not in the absence of default.
4

Elacqua, Gregory, Leidy Gómez, Thomas Krussig, Carolina Méndez, and Christopher Neilson. The Potential of Smart Matching Platforms in Teacher Assignment: The Case of Ecuador. Inter-American Development Bank, September 2022. http://dx.doi.org/10.18235/0004476.

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This paper studies the potential of personalized "smart" information interven- tions to improve teacher assignment results in the context of a centralized choice and assignment system (CCAS) in Ecuador. Specifically, we focus on the impact that a personalized non-assignment risk warning, coupled with a list of "achiev- able" teaching position recommendations, had on teacher applications in the “I Want to Become a Teacher” selection process. We study the causal effect of the intervention on teachers school choices, assessing its impact on the equilibrium probability of being assigned and on the overall results of the selection process, both in terms of the percentage of filled vacancies and the selection scores of as- signed teachers. We find that treated teachers, in equilibrium, are much more likely to modify their application and obtain an assignment. This result highlights the potential of similar information interventions in other contexts. We furthermore present evidence that the intervention led to increased overall assignment rates and selection scores.
5

Elacqua, Gregory, Leidy Gómez, Thomas Krussig, Luana Marotta, Carolina Méndez, and Christopher Neilson. The Potential of Smart Matching Platforms in Teacher Assignment: The Case of Ecuador. Inter-American Development Bank, October 2022. http://dx.doi.org/10.18235/0004527.

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This paper studies the potential of personalized "smart" information interventions to improve teacher assignment results in the context of a centralized choice and assignment system (CCAS) in Ecuador. Specifically, we focus on the impact that a personalized non-assignment risk warning, coupled with a list of "achievable" teaching position recommendations, had on teacher applications in the “I Want to Become a Teacher” selection process. We study the causal effect of the intervention on teachers school choices, assessing its impact on the equilibrium probability of being assigned and on the overall results of the selection process, both in terms of the percentage of filled vacancies and the selection scores of as- signed teachers. We find that treated teachers, in equilibrium, are much more likely to modify their application and obtain an assignment. This result highlights the potential of similar information interventions in other contexts. We furthermore present evidence that the intervention led to increased overall assignment rates and selection scores.
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Champlin, Craig, and John P. H. Steele. DTPH56-14H-CAP06 Pipeline Assessment through 4-Dimensional Anomaly Detection and Characterization. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 2016. http://dx.doi.org/10.55274/r0011766.

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The team intended to develop two algorithms for matching anomalies across coincident internal pipeline inspections to assess corrosion growth rates. The first algorithm would match boxed anomalies. The second algorithm would match raw signals. The goal for each algorithm is slightly different. The boxed algorithm is intended to do a complete mapping of individual called-out anomalies from one inspection to the next. The raw signal algorithm velocity corrects and aligns raw inspections signals.
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Näslund-Hadley, Emma, Haydée Alonzo, Neulin Villanueva, Ricardo Gideon, and Yvonne Flowers. The Effects of the COVID-19 Pandemic on Education Outcomes in Belize. Inter-American Development Bank, April 2023. http://dx.doi.org/10.18235/0004836.

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The COVID-19 pandemic brought school systems to a halt across the globe. In Belize, remote learning was challenging owing to limited access to educational technologies and lack of familiarity with remote learning among teachers. This study draws on national standardized exams and specific achievement testing to assess pandemic-related learning losses at the primary education level. Based on administrative data, the study also analyzes changes in student enrollment, dropout rates, and grade repetition at the primary and secondary levels. We find that school closures resulted in significant learning losses in English language and mathematics at the end of primary education. Matching international trends, the largest losses occurred in mathematics. Among the strands of mathematics content, the one showing the most dramatic loss is number sense in primary schools and geometry in secondary schools; the achievement level in both dropped by around 55 percent. Also, in line with international trends, average student repetition and dropout rates surged at the secondary level after prolonged school closures. The largest increase in dropout and repetition levels were found in urban secondary schools: the average dropout rate increased by 51 percent in the 2020/21 school year, compared with the average rate in the year prior to the start of the pandemic, while the repetition rate increased from 6.7 percent in the 2019/20 school year to 11.6 percent in the 2021/22 school year.
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Gáfaro, Margarita, Ana María Ibáñez, Daniel Sánchez-Ordoñez, and María Camila Ortiz. Farm Size and Income Distribution of Latin American Agriculture New Perspectives on an Old Issue. Inter-American Development Bank, August 2023. http://dx.doi.org/10.18235/0005088.

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Latin American and Caribbean countries have historically been known for their rates of land inequality, highest in the world. However, these countries also exhibit a high degree of heterogeneity in their patterns of land concentration and average farm sizes. These cross-country differences play a determining role in productivity of farms and the distribution of agricultural income. Constructing a new data-set matching agri- cultural census and household survey data, we provide suggestive evidence on the positive relationship between farm size and farm income and wages. We identify the prevalence of small farms and the resulting low agricultural incomes as an important mechanism contributing to high income inequality in agricultural regions. Low labor productivity in small farms appears as a key explanatory factor.
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Robles, Miguel, Hugo R. Ñopo, and Jaime Saavedra-Chanduví. Occupational Training to Reduce Gender Segregation: The Impacts of ProJoven. Inter-American Development Bank, October 2007. http://dx.doi.org/10.18235/0011273.

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This paper discusses program evaluation for ProJoven, the Peruvian youth labor training program. Complementing detailed fieldwork, the econometric work implements a two-stage matching procedure on propensity scores, gender and labor income. This allows identification of differentiated program impacts on males and females and attacks the problem of Ashenfelter's Dips. The evaluation shows substantial differences in ProJoven's impact for males and females. Eighteen months after participation in the program, employment rates for females improve by about 15 percent (while employment for males reduces by 11 percent), gender occupational segregation reduces by 30 percent, and females' labor income improves by 93 percent (while males' earnings increase by 11 percent). Nonetheless, gender equality promotion represents only 1.5 percent of ProJoven's budget. These results suggest that labor-training programs that promote equal gender participation have disproportionately positive effects on outcomes for women trainees in a labor market with substantial gender differences.
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Medina, Carlos, Jairo Núñez, and Jorge Andrés Tamayo. The Unemployment Subsidy Program in Colombia: An Assessment. Inter-American Development Bank, May 2013. http://dx.doi.org/10.18235/0011497.

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This paper assesses the effects of the Colombian Unemployment Subsidy (US), which includes benefits as well as training for some recipients. Using regression discontinuity and matching differences-in-differences estimators, the study finds that participation in the labor market, earnings of beneficiaries, and household income do not increase, and for some populations decrease during the 18 months after leaving the US program. Enrollment in formal health insurance falls. Effects on male heads of household include reductions in their earnings, decreases in their labor participation, and increases in their unemployment rates. The study also finds a small though statistically significant positive effect on beneficiaries¿ school attendance, but none on their children¿s weight or height at birth. The results are sensitive to the type of training that beneficiaries receive. Overall, the program serves more as a mechanism for smoothing consumption and providing social assistance than for increasing labor market efficiency.

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