1 10 782 https://linen-dog.lnx.warwick.ac.uk/files/original/d5019434766f933e8db56b4536d5d640.pdf d4bc906d8a1acb504acc40c05543bcc2 Academic Paper An academic paper Abstract The abstract of the paper Factorising integers using elliptic curves Meta Tags Meta tags Mathematics, Elliptic curves Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Factorising integers using elliptic curves Subject The topic of the resource Mathematics Date A point or period of time associated with an event in the lifecycle of the resource 2026 Contributor An entity responsible for making contributions to the resource Hamza Zahid https://linen-dog.lnx.warwick.ac.uk/files/original/4d22dcc5edac10c43f68a7eaf60ebee9.pdf f657afa074329442fcaad75d64e47bd6 Academic Paper An academic paper Abstract The abstract of the paper This project studies the weak and strong cop numbers of Cayley graphs of finitely generated groups, with particular emphasis on methods for proving that the strong cop number is infinite. After reviewing several known results and techniques, we investigate a number of non-hyperbolic examples. For right-angled Artin groups, we use quasi-retractions onto Z² to determine their strong cop numbers in the non-free case. A novelty of this work is the proof that the discrete three-dimensional Heisenberg group H₃(Z) has infinite strong cop number. To show this, we introduce a weighted coordinate function comparable to the word metric and use the natural Heisenberg dilations to construct a sequence of quasi-homotheties. Motivated by this argument, we study a semidirect product Z³ ⋊ₐ Z and establish an analogous word-metric comparison, while the corresponding quasi-homothety problem is left open. Meta Tags Meta tags geometric group theory, cops and robbers, strong cop number, weak cop number, Cayley graphs, Heisenberg group, quasi-homothety, right-angled Artin groups Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Infinite Strong Cop Number of the Three-Dimensional Heisenberg Group Subject The topic of the resource Geometric group theory and coarse cops and robbers on Cayley graphs Date A point or period of time associated with an event in the lifecycle of the resource September 2026 Contributor An entity responsible for making contributions to the resource Dr Jerónimo García Mejía (URSS Supervisor) https://linen-dog.lnx.warwick.ac.uk/files/original/78556ff2169f5de5007487a6ad32c038.pdf afe29327cfaae33abb0eb248dcf27bbd Academic Paper An academic paper Abstract The abstract of the paper The Russia--Ukraine war disrupted global food commodity markets, raising concerns over food prices and food security across Africa. This study examines whether countries with greater pre-war dependence on cereal imports from Russia and Ukraine experienced larger increases in domestic food inflation following the outbreak of the conflict, and whether transmission varied with economic development. Using a monthly panel of 25 African economies from January 2017 to September 2025, the study employs a Difference-in-Differences framework exploiting cross-country variation in pre-war import dependence. Country and month fixed effects account for unobserved heterogeneity and common global shocks, while exchange-rate movements are included as a control. Robustness is assessed using alternative treatment definitions, fixed-effects specifications, placebo tests and leave-one-country-out estimation. The baseline results provide limited evidence that pre-war dependence on Russian and Ukrainian cereal imports systematically increased domestic food inflation following the outbreak of the war. However, substantial heterogeneity emerges across countries. Higher economic development is associated with significantly smaller increases in food inflation. Further analysis indicates that supplier concentration and domestic cereal production capacity help explain this resilience. Overall, the findings suggest that structural characteristics, rather than import dependence alone, shape countries' resilience to global food commodity shocks. Meta Tags Meta tags Economics, Food inflation, Food prices, Commodity price shocks, Russia-Ukraine war, Africa, Economic development, Food security, Cereal imports, Import dependence, Economic resilience, Difference-in-Differences, International economics Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource The Transmission of Global Food Commodity Shocks to Food Inflation in Africa: Evidence from the Russia–Ukraine War Subject The topic of the resource International Economics / Development Economics - Food Prices, Commodity Shocks and Economic Resilience Date A point or period of time associated with an event in the lifecycle of the resource Jun-Aug 2026 Contributor An entity responsible for making contributions to the resource Daniel Whitehouse, Prof Natalie Chen https://linen-dog.lnx.warwick.ac.uk/files/original/0fd2b8bd58c678c500666cee789a8baa.docx 973eca4e8f46dc8d558743c49542c4e9 Academic Paper An academic paper Abstract The abstract of the paper Fraudulent banking transactions create substantial financial and operational risks for financial institutions and their customers. The increasing availability of transaction-level data provides an opportunity to identify potentially fraudulent activity using statistical learning methods. This study aims to develop and compare statistical models for predicting whether a banking transaction is fraudulent. A labelled dataset containing approximately 200,000 transaction records is used, with fraud status represented by the binary response variable Fraud. After the removal of direct personal identifiers and other unsuitable fields, variables describing transaction characteristics, customer information, account balances, merchant categories, locations and transaction devices are considered as potential predictors. The labelled data are divided into a 70% training set and a 30% test set using stratified sampling. Two multiple logistic regression models are developed using different sets or representations of the predictor variables. For each model, backward stepwise selection based on the Akaike Information Criterion is used to reduce the full set of candidate predictors. Five-fold cross-validation is conducted within the training data to examine the predictive performance of the modelling procedures. The two final models are then fitted using the complete training set and applied to the independent test set. The test predictions are compared with the actual fraud outcomes using confusion matrices, and the predictive accuracy of each model is calculated. Model 1 achieved a test accuracy of 96.91%, while Model 2 achieved a slightly higher accuracy of 96.93%. Therefore, Model 2 was selected as the final model based on its higher test accuracy. The findings demonstrate how logistic regression and backward variable selection can be used to support the identification of potentially fraudulent banking transactions. However, the results should be interpreted considering limitations relating to data quality and the possible use of simulated transaction data. Meta Tags Meta tags fraud detection, banking transactions, logistic regression, statistical modelling, R Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Fraud detection in bank transactions using statistical modelling Subject The topic of the resource Fraud detection in bank transactions Date A point or period of time associated with an event in the lifecycle of the resource 2026-09-26 Contributor An entity responsible for making contributions to the resource Lisa Li https://linen-dog.lnx.warwick.ac.uk/files/original/95fd450fc4783e941c7d8ced1888ede2.docx f3eb89b93e28f136ac62b1e2155d54ee Academic Paper An academic paper Abstract The abstract of the paper This paper discusses the polity of the Norman adventurer Roussel de Bailleul which existed between 1073 and 1075. It answers how the polity survived for nearly two years with the use of a 'Norman Frontier Society Model' which was similar to other Norman polities such as the Kingdom of Sicily and the Principality of Antioch. Alongside this model, primary sources are utilised to create a contextualised picture of this polity in terms of its politics, economy and society. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource The Normans in Anatolia: An Analysis of the Functioning of the Polity of Roussel de Bailleul during the 1070s Subject The topic of the resource Byzantine Anatolia during the 1070s, primarily the polity of Roussel de Bailleul Date A point or period of time associated with an event in the lifecycle of the resource 1073-1075 Contributor An entity responsible for making contributions to the resource Aysu Dincer Hadjianastasis https://linen-dog.lnx.warwick.ac.uk/files/original/e9130f7b896ba563cd0fc5c8fff0da1c.pdf f37c7a13c5a16fff87554d6e1b979686 Academic Paper An academic paper Abstract The abstract of the paper This project investigates digit phenomena motivated by a question of Paul Erdős. We study the occurrence of the digit 7 in powers of 2, asking whether every sufficiently large power of 2 contains the digit 7. More generally, we consider the sequence (a·2ⁿ) for varying positive integers a and formulate the following conjecture: the set of a for which a·2ⁿ contains the digit 7 for all sufficiently large n has full natural density. In pursuit of this conjecture, we develop useful combinatorial and arithmetic estimates, together with a dynamical approach to the leading digits of these numbers. Meta Tags Meta tags number theory, digit occurrence, powers of two, geometric progressions, Benford's law, natural density, logarithmic density, dynamical systems, shrinking targets, irrational rotations, combinatorics, Erdős Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Digit Occurrence in Geometric Progressions Subject The topic of the resource Mathematics – Number Theory and Dynamical Systems Date A point or period of time associated with an event in the lifecycle of the resource 21/09/2026 Contributor An entity responsible for making contributions to the resource Joel Moreira https://linen-dog.lnx.warwick.ac.uk/files/original/f9848ce8020f1408c3569eff52e92c77.pdf fbc4325bcd22321b4b0e02d4d4047a02 Academic Paper An academic paper Abstract The abstract of the paper This project showcases the packing of circles and ellipses using conic shapes and focal conics. We derive Descartes’ equation and an equivalent of it in hyperbolic space, then go over an application within a liquid crystal and derive the cylcides of Dupin that are around a given focal conic. Meta Tags Meta tags Physics, Theoretical physics, Mathematics, Geometry Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Focal Conics: From Number Theory to Materials Geometry Subject The topic of the resource Physics Contributor An entity responsible for making contributions to the resource Dr. Gareth Alexander https://linen-dog.lnx.warwick.ac.uk/files/original/14f3f977d18f052eb8567c67595c04d5.pdf 6525f297e4bc76e6393a80a0f48ae93f Academic Paper An academic paper Abstract The abstract of the paper This project gives an introduction to the Jacobian of smooth algebraic curves, giving three separate constructions. We then survey the theory for nodal algebraic curves and give a worked example. Meta Tags Meta tags Algebraic Geometry Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource The Jacobian of Non-Smooth Algebraic Curves Subject The topic of the resource Mathematics Date A point or period of time associated with an event in the lifecycle of the resource 2026 Contributor An entity responsible for making contributions to the resource Marco Fava https://linen-dog.lnx.warwick.ac.uk/files/original/a68cb332e43824c91cd082d25e5c8643.pdf 3f69565ed7459c3d825ac8e51d9c49cb Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Science, Engineering and Medicine Academic Paper An academic paper Abstract The abstract of the paper This project investigates calibration methods for an ultrasonic anemometer affected by receiver-positioning error and differences in the dynamic response of flexural ultrasonic transducers (FUTs). Receiver positioning produces both a zero-flow timing offset and a residual flow-dependent error that cannot be removed by zero-flow calibration alone. A combined calibration procedure is developed in which the temperature-dependent FUT response is first characterised, followed by zero-flow calibration and known-flow calibration to determine the remaining positioning response. A mass–spring–damper model is used to relate FUT ring-down behaviour to the steady-state phase during continuous-wave operation. Numerical simulations show that the proposed calibration can recover the flow velocity with very small residual error under the assumed models. The positioning-error calibration is derived from the existing receiver-positioning model, while the proposed FUT phase correction remains to be experimentally validated. Meta Tags Meta tags ultrasonic anemometry, ultrasonic sensing, calibration, flexural ultrasonic transducers, FUT, flow measurement, positioning error, zero-flow offset, transit-time difference, temperature compensation, phase response, numerical modelling Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Anemometer – Combined Calibration of Zero-Flow Timing and Residual Flow-Dependent Positioning Error Subject The topic of the resource Ultrasonic anemometry and calibration Date A point or period of time associated with an event in the lifecycle of the resource August 2026 Contributor An entity responsible for making contributions to the resource Jacky So https://linen-dog.lnx.warwick.ac.uk/files/original/ad2bf5bc153bd23a119cca8e323a38d6.pdf 040a05b4d69cf2d6ec8a026b06bffd5c Academic Paper An academic paper Abstract The abstract of the paper This project explores the causes and lasting consequences of European immigration to Argentina. It begins by considering the historical context of European emigration, including economic hardship, political instability, war, and persecution, alongside the factors that made Argentina an attractive destination, such as its expanding economy, immigration-friendly policies, and abundance of fertile land. It then examines the diverse groups who settled in Argentina and assesses how they reshaped the country's language and culture. Finally, it reflects on the continuing legacy of this migration, considering both personal observations from my visit to Argentina and the ways in which immigration to the country has evolved in the present day. Meta Tags Meta tags Argentina, History, Immigration, Emmigration, Migration, History of Immigration, History of South America, Linguistics, Culture, Hispanic Culture, History of Linguistics, Spanish, History of the Spanish Language Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource The Sociolinguistic Impact of Immigration on Argentina Subject The topic of the resource Linguistics, Hispanic Studies, History Date A point or period of time associated with an event in the lifecycle of the resource 2026 Contributor An entity responsible for making contributions to the resource Amelia Brady