13,875 research outputs found
Ikeda delay differential equation
No full textThis Demonstration shows solutions of the Ikeda delay differential equation, X'(t)=sin(x(t-τ)), a very simple equation with complex chaotic dynamicsEducação Superior::Ciências Exatas e da Terra::Matemátic
Ikeda delay differential equation
No full textThis Demonstration shows solutions of the Ikeda delay differential equation, X'(t)=sin(x(t-τ)), a very simple equation with complex chaotic dynamicsEducação Superior::Ciências Exatas e da Terra::Matemátic
<i>Theileria orientalis</i> Ikeda in Cattle, Alabama, USA
No full textTheileria orientalis Ikeda genotype, a parasite causing a disease in cattle that leads to significant economic challenges in Asia, New Zealand, and Australia, has been identified in seven U.S. States since 2017. Two previously validated PCR tests for Theileria followed by DNA sequencing were performed to test blood samples collected from 219 cattle in Alabama, USA, during the period of 2022–2023. Bidirectional Sanger sequencing revealed that the MPSP gene sequences (639–660 bp) from two cattle in Lee and Mobile Counties of Alabama exhibited a 100% match with those of recognized T. orientalis Ikeda strains, and showed similarities ranging from 76% to 88% with ten other T. orientalis genotypes. A high copy number of T. orientalis Ikeda was detected in the blood of infected cattle (ALP-1: 1.7 × 105 and 1.3 × 106/mL whole blood, six months apart; ALP-2: 7.1 × 106/mL whole blood). Although the confirmed competent vector for T. orientalis Ikeda, Haemaphysalis longicornis tick, has not yet been identified in Alabama, the persistent nature of T. orientalis Ikeda infection and the detection of a high pathogen burden in seemingly healthy cattle in this study suggest that other tick species, as well as shared needles and dehorning procedures, could facilitate pathogen transmission within the herd. Continued investigations are necessary for the surveillance of T. orientalis Ikeda and Haemaphysalis longicornis ticks in Alabama and other U.S. states, along with assessing the pathogenicity of T. orientalis Ikeda infections in cattle
Merozoites of Theileria orientalis buffeli reduce the parasitaemia of T. orientalis ikeda following tick challenge
No full textTheileria orientalis is a tick-borne protozoal parasite causing anaemia and death in susceptible cattle. This investigation aimed to confirm whether immunisation with the “benign” buffeli genotype of T. orientalis could reduce the parasitaemia of the virulent ikeda genotype. Calves were inoculated intravenously or subcutaneously with bovine blood containing merozoites of T. orientalis buffeli and when recipients became positive by PCR, they and control calves were challenged with unfed nymphs of Haemaphysalis longicornis ticks infected as larvae with T. orientalis ikeda. All calves became positive for the challenge within 12 days after tick application. In the immunised calves, the first wave of parasitaemia with T. orientalis ikeda from 4 to 6 weeks was reduced significantly by >80 % before the parasite burden declined into the carrier state by 9 weeks. The parasitaemias in two calves which exhibited low infections with T. orientalis ikeda shortly after arrival, were also significantly reduced after tick challenge. The results confirm the previous studies on immunity to T. sergenti in Japan, and field experience with theileriosis in endemic zones where the carrier state appears to prevent clinical disease despite repeated, seasonal tick infestations with virulent genotypes of the parasite. This method offers a means to reduce the severity of the first wave of theilerial parasitaemia after tick challenge and possibly recover associated production losses
Ikeda delay differential equation
No full textThis Demonstration shows solutions of the Ikeda delay differential equation, X'(t)=sin(x(t-τ)), a very simple equation with complex chaotic dynamicsEducação Superior::Ciências Exatas e da Terra::Matemátic
Studying Economics as War Effort: The First Economic Treatise in the Ottoman Empire and its Militaristic Motivations
No full textThe introduction of post-Smithian economics into the Ottoman Empire in the early nineteenth century was primarily militaristically motivated. The first known treatise of economics in Ottoman-Turkish is a manuscript, entitled Risâle-i Tedbîr-i Ûmrân-ı Mülkî (A Treatise on the Administration of the Prosperity of the Country/State, c.1835), written exclusively for the Ottoman political-military elite. The manuscript is based mostly on Jean-Baptiste Say’s Cours complet d'économie politique pratique (1828-29). The anonymous author of this 84-page manuscript begins the text with the argument that military technologies and institutions got more sophisticated in modern times and the necessary institutional upgrading to catch up with these changes created a heavy burden on central state finances. This new discipline, i.e. economics, according to the author, provides statesmen with new scientific principles for organizing an effective war economy. Focusing on the militaristic objectives and content of the first known example of the Ottoman-Turkish economic literature, this paper examines the relationship between war and economics in the early nineteenth-century Ottoman Empire. It also sheds light on the linguistic and cultural dynamics of the transmission of economic ideas into the Ottoman Empire
Studying Economics as War Effort: The First Economic Treatise in the Ottoman Empire and its Militaristic Motivations
No full textThe introduction of post-Smithian economics into the Ottoman Empire in the early nineteenth century was primarily militaristically motivated. The first known treatise of economics in Ottoman-Turkish is a manuscript, entitled Risâle-i Tedbîr-i Ûmrân-ı Mülkî (A Treatise on the Administration of the Prosperity of the Country/State, c.1835), written exclusively for the Ottoman political-military elite. The manuscript is based mostly on Jean-Baptiste Say’s Cours complet d'économie politique pratique (1828-29). The anonymous author of this 84-page manuscript begins the text with the argument that military technologies and institutions got more sophisticated in modern times and the necessary institutional upgrading to catch up with these changes created a heavy burden on central state finances. This new discipline, i.e. economics, according to the author, provides statesmen with new scientific principles for organizing an effective war economy. Focusing on the militaristic objectives and content of the first known example of the Ottoman-Turkish economic literature, this paper examines the relationship between war and economics in the early nineteenth-century Ottoman Empire. It also sheds light on the linguistic and cultural dynamics of the transmission of economic ideas into the Ottoman Empire
The pathogenic haemoparasite of cattle Theileria orientalis Ikeda is not present in Fiji
No full textThe pathogenic haemoparasite of cattle Theileria orientalis Ikeda is present in Australia and New Zealand. The tick Haemaphysalis longicornis Neumann, is a competent host for T. orientalis and is abundant in Fiji. Consequently the Fijian Ministry of Agriculture recommended suspension of live cattle imports from countries with T. orientalis Ikeda until the status of Fiji could be determined. To determine the status of Fiji with respect to T. orientalis Ikeda the Ministry conducted a targeted survey of the two subpopulations of recently imported cattle. Samples of whole blood were tested using a specific polymerase chain reaction (PCR) nucleic acid detection test for T. orientalis Ikeda and a generic PCR test for Theileria species in New Zealand. The PCR tests were all negative for T.orientalis Ikeda strain and also for generic Theileria species. Epidemiologic analysis using assumed minimum prevalence 0.1, test sensitivity 0.9 and test specificity 0.99 demonstrated that the two subpopulations were free from T. orientalis Ikeda with probability of greater than 99.9 % and 95 %, respectively. Therefore it is highly unlikely that pathogenic T. orientalis Ikeda strain is present in cattle in Fiji, but it could become established since the vector H. longicornis is abundant.Alexander D. McLachlan and Stephen D. Angu
Raw data for 'Signature of spin triplet exciton condensations in LaCoO3 at ultrahigh magnetic fields up to 600 T'
No full textRaw data for the paper below
Signature of spin triplet exciton condensations in LaCoO3 at ultrahigh magnetic fields up to 600 T
A. Ikeda, Y. H. Matsuda, K. Sato, Y. Ishii, H. Sawabe, D. Nakamura, S. Takeyama, J. Nasu
arXiv:2201.0270
Social force model with explicit collision prediction
No full textWe introduce a new specification of the social force model in which pedestrians
explicitly predict the place and time of the next collision in order to avoid it. This and other
specifications of the social force model are calibrated, using genetic algorithms, on a set of
pedestrian trajectories, obtained tracking with laser range finders the movement of pedestrians in
controlled experiments, and their performance is compared. The results show that the proposed
method has a better performance in describing the trajectory set
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