Journal articles: 'AHERS'

1

Kennedy, Robert. "Annette Jean Ahern." Studies in Religion/Sciences Religieuses 40, no. 2 (May 18, 2011): 262–63. http://dx.doi.org/10.1177/0008429811406015.

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Martaus, Alaine. "Flawed by Cecelia Ahern." Bulletin of the Center for Children's Books 69, no. 10 (2016): 505. http://dx.doi.org/10.1353/bcc.2016.0520.

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3

Ahlers, Guenter, and David S. Cannell. "Ahlers and Cannell Respond." Physical Review Letters 57, no. 11 (September 15, 1986): 1381. http://dx.doi.org/10.1103/physrevlett.57.1381.

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Dunkel, Mario. "Michael Ahlers & Christoph." Volume !, no. 15 : 1 (December 5, 2018): 181–83. http://dx.doi.org/10.4000/volume.6222.

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5

Galea, Sandro, and Jennifer Ahern. "GALEA AND AHERN RESPOND." American Journal of Public Health 97, no. 1 (January 2007): 9. http://dx.doi.org/10.2105/ajph.2006.102376.

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Schlund, Gerhard H. "Arzthaftpflicht – Rechtsprechung (AHRS)." Juristische Rundschau 2019, no. 5 (April 8, 2019): 267–68. http://dx.doi.org/10.1515/juru-2019-0008.

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Schlienkamp, Christoph. "Ahlers AG — Konzernabschluss zum 30.11.2018." Die Aktiengesellschaft 64, no. 7 (April 1, 2019): r101—r102. http://dx.doi.org/10.9785/ag-2019-640722.

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8

Ayer, John D. "Rethinking Absolute Priority after Ahlers." Michigan Law Review 87, no. 5 (April 1989): 963. http://dx.doi.org/10.2307/1289227.

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9

Bernier, Jacques. "Ahern, historien de la médecine." Canadian Bulletin of Medical History 17, no. 1 (April 2000): 25–35. http://dx.doi.org/10.3138/cbmh.17.1.25.

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Larson, Donald R. "In Memoriam: Maureen Ahern (1936–2012) - Maureen Ahern: Published Works on Latin American Studies." Romance Philology 67, no. 2 (September 2013): 237–45. http://dx.doi.org/10.1484/j.rph.5.103164.

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Boriani, Giuseppe, Marco Vitolo, Jacopo Francesco Imberti, Tatjana S. Potpara, and Gregory Y. H. Lip. "What do we do about atrial high rate episodes?" European Heart Journal Supplements 22, Supplement_O (December 2020): O42—O52. http://dx.doi.org/10.1093/eurheartj/suaa179.

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Abstract Atrial high rate episodes (AHREs) are defined as asymptomatic atrial tachyarrhythmias detected by cardiac implantable electronic devices with atrial sensing, providing automated continuous monitoring and tracings storage, occurring in subjects with no previous clinical atrial fibrillation (AF) and with no AF detected at conventional electrocardiogram recordings. AHREs are associated with an increased thrombo-embolic risk, which is not negligible, although lower than that of clinical AF. The thrombo-embolic risk increases with increasing burden of AHREs, and moreover, AHREs burden shows a dynamic pattern, with tendency to progression along with time, with potential transition to clinical AF. The clinical management of AHREs, in particular with regard to prophylactic treatment with oral anticoagulants (OACs), remains uncertain and heterogeneous. At present, in patients with confirmed AHREs, as a result of device tracing analysis, an integrated, individual and clinically-guided assessment should be applied, taking into account the patients’ risk of stroke (to be reassessed regularly) and the AHREs burden. The use of OACs, preferentially non-vitamin K antagonists OACs, may be justified in selected patients, such as those with longer AHREs durations (in the range of several hours or ≥24 h), with no doubts on AF diagnosis after device tracing analysis and with an estimated high/very high individual risk of stroke, accounting for the anticipated net clinical benefit, and informed patient’s preferences. Two randomized clinical trials on this topic are currently ongoing and are likely to better define the role of anticoagulant therapy in patients with AHREs.

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12

Liao, Min-Tsun, Chun-Kai Chen, Ting-Tse Lin, Li-Ying Cheng, Hung-Wen Ting, and Yen-Bin Liu. "High-Sensitivity C-Reactive Protein is a Predictor of Subsequent Atrial High-Rate Episodes in Patients with Pacemakers and Preserved Ejection Fraction." Journal of Clinical Medicine 9, no. 11 (November 16, 2020): 3677. http://dx.doi.org/10.3390/jcm9113677.

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Atrial fibrillation (AF) is associated with morbidity and mortality. Modern pacemakers can detect atrial high-rate episodes (AHREs) as a surrogate for AF. It remains controversial whether inflammation is a cause or a consequence of AF. This study investigated whether the inflammatory biomarker high-sensitivity C-reactive protein (hs-CRP) can predict subsequent AHREs. This study gathered prospective data from patients with pacemakers and a left ventricle EF ≥ 50% between 2015 and 2019. The hs-CRP and other cardiac biomarkers at baseline and device-detected AHREs, defined as atrial rate ≥ 180 bpm and duration ≥ 6 min, were determined. Cox regression analysis was used to estimate the independent predictors for AHREs. A total of 171 consecutive patients were included. During the median follow-up of 614 days, 66 patients (39%) developed subsequent AHREs. In the univariate Cox regression analysis, sick sinus syndrome (p = 0.005), prior AF (p < 0.001), mitral A velocity (p = 0.008), and hs-CRP (p = 0.013) showed significant association with the increased risk of AHREs. In the multivariate Cox regression model, hs-CRP (HR = 1.121, 95% confidence interval = 1.015–1.238, p = 0.024) retained its significance. Our results suggest that elevated hs-CRP could predict subsequent AHREs and that inflammation could play a role in AF pathogenesis in patients with preserved EF.

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Kirk, Stephanie, Mabel Moraña, Abril Trigo, Carlos A. Jáuregui, Rebecca Carte, Dan Reff, and Rocío Quispe-Agnoli. "In Memoriam: Maureen Ahern (1936–2012)." Revista de Estudios Hispánicos 46, no. 3 (2012): 395–404. http://dx.doi.org/10.1353/rvs.2012.0069.

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14

Dalfino, L., and N. Brienza. "Reply to Drs Ahern and Schnoor." Clinical Infectious Diseases 55, no. 9 (July 17, 2012): 1275–76. http://dx.doi.org/10.1093/cid/cis633.

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15

Marois, Denise. "Assessing AHERA: The Three Faces of Asbestos." Synergist 7, no. 8 (1996): 24. http://dx.doi.org/10.3320/1.2928524.

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16

Anderson, John T. "On an example of Ahern and Rudin." Proceedings of the American Mathematical Society 116, no. 3 (March 1, 1992): 695. http://dx.doi.org/10.1090/s0002-9939-1992-1129870-4.

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17

Zhao, Long, and Qing Yun Wang. "Design of an Attitude and Heading Reference System Based on Distributed Filtering for Small UAV." Mathematical Problems in Engineering 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/498739.

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A development procedure for a low-cost attitude and heading reference system (AHRS) based on the distributed filter has been proposed. The AHRS consists of three single-axis accelerometers, three single-axis gyroscopes, and one 3-axis digital compass. The initial attitude estimation is readily accomplished by using the complementary filtering. The attitude estimation for UAV flying in the real time is realized by using the three low orders EKF. The validation results show that the estimated orientations of the developed AHRS are within the acceptable region, and AHRS can give a stabilized attitude and heading information for a long time.

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18

Metcalf, Patricia A., Michelle L. Meyer, Chirayath M. Suchindran, and Gerardo Heiss. "Assessment of a Regression Method to Reclassify Deaths Attributable to Heart Failure." Global Journal of Health Science 9, no. 3 (July 12, 2016): 13. http://dx.doi.org/10.5539/gjhs.v9n3p13.

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BACKGROUND: Evaluation of cause-specific mortality for public health research depends on accurate death certificates and vital records. However, ill-defined causes of death (termed garbage codes), such as heart failure, are often listed as the underlying cause of death. We examined a regression method proposed by Ahern and colleagues for redistributing deaths attributed to heart failure and compared it to a simulation of the regression method by bootstrapping. METHODS: Deaths attributed to heart failure in four U.S. states (Maryland, Minnesota, Mississippi and North Carolina) were redistributed to a set of underlying causes of death using regression models that identified the proportion of deaths for each target code within a given state-age-sex-education group using ICD-10 mortality data. The results were compared with 3,000 bootstrapped samples with replacement regression.RESULTS: The odds of death from heart failure in the population studied increased with age, was higher in whites and lower in decedents with greater than a high school education compared to those with less than high school education. There were 18 (29.0%) subgroups that showed no significant redistribution targets for the Ahern regression method and 28 (45.2%) for the bootstrapped regression method. Ischemic heart disease was a distribution target for 28 (45.2%) of the Ahern regression subgroups and 22 (35.5%) of the bootstrapped regression subgroups. The Ahern regression method and bootstrapped regression methods were discordant in 19 (30.6%) out of the 62 subgroups examined.CONCLUSION: The Ahern regression method tended to redistribute deaths attributed to heart failure to more target groups compared with the bootstrapped regression method. Both the Ahern regression and the bootstrap regression methods were computationally intensive and inefficient, and results appeared to be influenced by the choices of sex-age-education group strata. Other methods such as coarsened exact matching and improvements to the Ahern approach are desirable additions to the tools available to mitigate the impact of garbage codes on the accuracy of death certification.

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19

Turski, Waldemar A., Artur Wnorowski, Gabrielle N. Turski, Christopher A. Turski, and Lechoslaw Turski. "AhR and IDO1 in pathogenesis of Covid-19 and the “Systemic AhR Activation Syndrome:” a translational review and therapeutic perspectives." Restorative Neurology and Neuroscience 38, no. 4 (September 24, 2020): 343–54. http://dx.doi.org/10.3233/rnn-201042.

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Covid-19 is the acute illness caused by SARS-CoV-2 with initial clinical symptoms such as cough, fever, malaise, headache, and anosmia. After entry into cells, corona viruses (CoV) activate aryl hydrocarbon receptors (AhRs) by an indoleamine 2,3-dioxygenase (IDO1)-independent mechanism, bypassing the IDO1-kynurenine-AhR pathway. The IDO1-kynurenine-AhR signaling pathway is used by multiple viral, microbial and parasitic pathogens to activate AhRs and to establish infections. AhRs enhance their own activity through an IDO1-AhR-IDO1 positive feedback loop prolonging activation induced by pathogens. Direct activation of AhRs by CoV induces immediate and simultaneous up-regulation of diverse AhR-dependent downstream effectors, and this, in turn, results in a “Systemic AhR Activation Syndrome” (SAAS) consisting of inflammation, thromboembolism, and fibrosis, culminating in multiple organ injuries, and death. Activation of AhRs by CoV may lead to diverse sets of phenotypic disease pictures depending on time after infection, overall state of health, hormonal balance, age, gender, comorbidities, but also diet and environmental factors modulating AhRs. We hypothesize that elimination of factors known to up-regulate AhRs, or implementation of measures known to down-regulate AhRs, should decrease severity of infection. Although therapies selectively down-regulating both AhR and IDO1 are currently lacking, medications in clinical use such as dexamethasone may down-regulate both AhR and IDO1 genes, as calcitriol/vitamin D3 may down-regulate the AhR gene, and tocopherol/vitamin E may down-regulate the IDO1 gene. Supplementation of calcitriol should therefore be subjected to epidemiological studies and tested in prospective trials for prevention of CoV infections, as should tocopherol, whereas dexamethasone could be tried in interventional trials. Because lack of physical exercise activates AhRs via the IDO1-kynurenine-AhR signaling pathway increasing risk of infection, physical exercise should be encouraged during quarantines and stay-at-home orders during pandemic outbreaks. Understanding which factors affect gene expression of both AhR and IDO1 may help in designing therapies to prevent and treat humans suffering from Covid-19.

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20

Belokurov, V. A. "AHRS BASED ON GAUSSIAN PARTIAL FILTER." Vestnik of Ryazan State Radio Engineering University 56, no. 2 (2016): 11–16. http://dx.doi.org/10.21667/1995-4565-2016-56-2-11-16.

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21

Han, Songlai, and Jinling Wang. "A Novel Method to Integrate IMU and Magnetometers in Attitude and Heading Reference Systems." Journal of Navigation 64, no. 4 (September 12, 2011): 727–38. http://dx.doi.org/10.1017/s0373463311000233.

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Modern attitude and heading reference systems (AHRS) generally use Kalman filters to integrate gyros with some other augmenting sensors, such as accelerometers and magnetometers, to provide a long term stable orientation solution. The construction of the Kalman filter for the AHRS is flexible, while the general options are the methods based on quaternion, Euler angles, or Euler angle errors. But the quaternion and Euler angle based methods need to model system angular motions, and, meanwhile, all these three methods suffer from nonlinear problems which will increase the system complexities and the computational difficulties. This paper proposes a novel implementation method for the AHRS integrating IMU and magnetometer sensors. In the proposed method, the Kalman filtering is implemented to use the Euler angle errors to express the local level frame (lframe) errors, rather than express the body frame (bframe) errors as the customary methods do. A linear system error model based on the Euler angles errors expressing thelframe errors for the AHRS has been developed and the corresponding system observation model has been derived. This proposed method for AHRS does not need to model system angular motions and also avoids the nonlinear problem which is inherent in the commonly used methods. The experimental results show that the proposed method is a promising alternative for the AHRS.

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Wang, Yangzhu, Ning Li, Xi Chen, and Miao Liu. "Design and Implementation of an AHRS Based on MEMS Sensors and Complementary Filtering." Advances in Mechanical Engineering 6 (January 1, 2014): 214726. http://dx.doi.org/10.1155/2014/214726.

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This paper presents design and implementation of an attitude and heading reference system (AHRS) based on low-cost MEMS sensors and complementary filtering (CF). Different from traditional solutions, information fusion is performed with Euler angles directly, which is more straightforward for understanding; however it proposes many challenges for reaching a stable and accurate estimation as when these angles approach or traverse their range boundaries, estimation may get discontinuous. Thus an effective discontinuity avoiding strategy is suggested in this paper to refine the estimation. Besides, instead of extended Kalman filtering (EKF), CF is utilized for state estimation of AHRS as it features fusion of high-frequency and low-frequency signals. In order to make up for shortcomings of MEMS sensors such as multiple errors, drifts, and bad accuracy, some effective calibration and filtering algorithms are proposed to guarantee agreeable AHRS performance. Also, architecture of the MEMS IMU (inertial measurement unit) and mathematical principles for AHRS solution are explained and implemented in this paper. Meanwhile, experimental comparisons have proved feasibility and acceptable performance of this AHRS design.

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23

MeenaKumari, V., and P. Shelonitta. "Psychodynamic Study on the Works of Cecelia Ahern." Shanlax International Journal of English 8, no. 3 (June 2, 2020): 60–64. http://dx.doi.org/10.34293/english.v8i3.3170.

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Sigmund Freud’s psychoanalytical theory originally developed in the late 19th and early 20th centuries, in which Freud throws light into the “personality” of a human being. He gives a tripartite structure that involves a conscious (superego), pre-conscious (ego), and super-conscious (the ‘id’). These concepts and their explanations form the fundamentals of the psychoanalytical theory. This thesis will focus on “Resistance and Repression,” which is one among the many theories of psychoanalysis established by Freud. ‘Repression’ or also referred to as ‘Suppression’ by later psychologists, is the process of deliberately pushing out a painful thought, memory or feeling out of consciousness and becoming unaware of its existence, to which ‘Resistance’ acts as a safety measure by the mind in not giving entrance to certain painful memories into the conscious. Thisphenomenon plays a major role in the psyche of an average person as a “defense mechanism” to escape the anxiety that is caused by certain unacceptable concepts to the conscious mind. This thesis brings into light the psyche of the protagonist of Cecelia Ahern’s novel “Postscript,” who, throughout their life, represses painful events of the past, thus altering their decisions in life to a great extent. This work focuses on the behavioral patterns of the characters in the selected novels of study and the corresponding psychological traits that give an in-depth understanding of repression and its corresponding theories and their role in human life.

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Ahern, Tom. "The Modified Oral Palatopharyngoplasty or Modified Ahern Procedure." World Journal of Veterinary Science 6 (October 5, 2018): 33–37. http://dx.doi.org/10.12970/2310-0796.2018.06.07.

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25

Aparicio, Frances R. "A Rosario Castellanos Reader edited by Maureen Ahern." Rocky Mountain Review 44, no. 1-2 (1990): 90–91. http://dx.doi.org/10.1353/rmr.1990.0051.

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Navidi, Neda, and Rene Landry. "A New Perspective on Low-Cost MEMS-Based AHRS Determination." Sensors 21, no. 4 (February 16, 2021): 1383. http://dx.doi.org/10.3390/s21041383.

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Attitude and heading reference system (AHRS) is the term used to describe a rigid body’s angular orientation in three-dimensional space. This paper describes an AHRS determination and control system developed for navigation systems by integrating gyroscopes, accelerometers, and magnetometers signals from low-cost MEMS-based sensors in a complementary adaptive Kalman filter. AHRS estimation based on the iterative Kalman filtering process is required to be initialized first. A new method for AHRS initialization is proposed to improve the accuracy of the initial attitude estimates. Attitude estimates derived from the initialization and iterative adaptive filtering processes are compared with the orientation obtained from a high-end reference system. The improvement in the accuracy of the initial orientation as significant as 45% is obtained from the proposed method as compared with other selected techniques. Additionally, the computational process is reduced by 96%.

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Dondé, Clément, Frédéric Haesebaert, Emmanuel Poulet, Marine Mondino, and Jérôme Brunelin. "Validation of the French Version of the Auditory Hallucination Rating Scale in a Sample of Hallucinating Patients with Schizophrenia." Canadian Journal of Psychiatry 65, no. 4 (December 13, 2019): 237–44. http://dx.doi.org/10.1177/0706743719895641.

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Objective: The aim of this study was to validate the French version of the 7-item Auditory Hallucination Rating Scale (AHRS) so as to facilitate fine-grained assessment of auditory hallucinations (AH) in native French-speaking patients with schizophrenia (SZ) in clinical settings and studies. Method: Patients ( N = 66) were diagnosed with SZ according to the Diagnostic and Statistical Manual of Mental Disorders. The French version of the AHRS was developed using a forward–backward translation procedure. Psychometric properties of the French version of the AHRS were tested including (i) construct validity with a confirmatory one-factor analysis, (ii) internal validity with Pearson correlations and Cronbach α coefficients, and (iii) external validity by correlations with the Scale for Assessment of Positive Symptoms (SAPS-H1), the Positive and Negative Syndrome Scale (PANSS-P3; concurrent), the PANSS-Negative subscale and age of subjects (divergent), and inter-rater intraclass correlation coefficients (ICCs). Results: (i) The confirmatory one-factor analysis found a root mean square error of approximation (RMSEA) = 0.00, 90% confidence interval = [0.000 to 0.011], and a comparative fit index = 0.994. (ii) Correlations between AHRS total score and individual items were mostly ≥0.4. Cronbach α coefficient was 0.61. (iii) Correlations with PANSS-P3 and SAPS-H1 were 0.42 and 0.53, respectively. In a subset of participants ( N = 16), ICC values were extremely high and significant for AHRS total and individual item scores (ICCs range 0.899 to 0.996) Conclusion: The French version of the AHRS is a psychometrically acceptable instrument for the evaluation of AH severity in French-speaking patients with SZ.

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Razali, Shikin, and Amzari Zhahir. "UAV State Estimation Modeling Techniques in AHRS." IOP Conference Series: Materials Science and Engineering 260 (November 2017): 012013. http://dx.doi.org/10.1088/1757-899x/260/1/012013.

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Spencer, Graham. "Leading a Peace Process: an interview with Bertie Ahern." Irish Political Studies 32, no. 4 (November 22, 2016): 588–607. http://dx.doi.org/10.1080/07907184.2016.1253558.

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Dudziak, James. "A note on a theorem of Ahern and Sarason." Proceedings of the American Mathematical Society 98, no. 1 (January 1, 1986): 38. http://dx.doi.org/10.1090/s0002-9939-1986-0848871-1.

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Rao, Jadhav S. Jaya Sankar, and Papa Rao Alahari. "Pre-Adoleseent Growth Studies among the Ahirs of Haryana." Oriental Anthropologist: A Bi-annual International Journal of the Science of Man 13, no. 2 (July 2013): 483–92. http://dx.doi.org/10.1177/0972558x1301300221.

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A cross-sectional growth study was undertaken among the Ahir boys and girts of Mahendragarh district of Haryana. The study urns conducted among the school going children ranging the age from six to ten years. Anthropometric measurements were taken on 420 children (209 boys and 211 girls). A steady growth was observed for all the measurements in both the sexes with the advancement of age while, skinfold measurement did not showed a definite trend. It was observed thai the growth among boys is higher than to girls except for the sixth age group. Nutritional status of the children was observed through weight for age, height for age and mid upper arm classifications. It was observed that for weight for age classification, around 31.66 percent and 37.38 percent of children fall under grade-I and grade-II malnutrition respectively. Height for age classification showed that 60.71 percent are under mild retardation and for mid upper arm circumference classification 48.33 percent and 29.28 percent were normal and mild malnourished respectively. Based on the above indices it is inferred that, the nutritional status of the Ahir children were below normal and are mildly malnourished.

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Khan, Ahsan A., Giuseppe Boriani, and Gregory Y. H. Lip. "Are atrial high rate episodes (AHREs) a precursor to atrial fibrillation?" Clinical Research in Cardiology 109, no. 4 (September 14, 2019): 409–16. http://dx.doi.org/10.1007/s00392-019-01545-4.

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Abstract Atrial high rate episodes (AHREs), also termed, subclinical atrial tachyarrhythmias or subclinical atrial fibrillation (AF) are an important cardiovascular condition. Advancement in implantable cardiac devices such as pacemakers or internal cardiac defibrillators has enabled the continuous assessment of atrial tachyarrhythmias in patients with an atrial lead. Patients with device-detected AHREs are at an elevated risk of stroke and may have unmet anticoagulation needs. While the benefits of oral anticoagulation for stroke prevention in patients with clinical AF are well recognised, it is not known whether the same risk–benefit ratio exists for anticoagulation therapy in patients with AHREs. The occurrence and significance of AHRE are increasingly acknowledged but these events are still not often acted upon in patients presenting with stroke and TIA. Additionally, patients with AHRE show a significant risk for major adverse cardiovascular events (MACE) including acute heart failure, myocardial infarction, cardiovascular hospitalisation, ventricular tachycardia/fibrillation, which is dependent on AHRE burden. In this review, we present an overview of this relatively new entity, its associated thromboembolic risk and its management implications. Graphic abstract

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Kim, Ho-Sung, Hyeung-Sik Choi, Jong-Su Yoon, and P. I. Ro. "Study on AHRS Sensor for Unmanned Underwater Vehicle." International Journal of Ocean System Engineering 1, no. 3 (September 1, 2011): 165–70. http://dx.doi.org/10.5574/ijose.2011.1.3.165.

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Gao, Tong Yue, and Hai Lang Ge. "Low Cost AHRS Aids GPS Attitude Navigation System." Applied Mechanics and Materials 536-537 (April 2014): 748–55. http://dx.doi.org/10.4028/www.scientific.net/amm.536-537.748.

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Recently, the SUAV has become the research focus at home and abroad. There is a new aircraft type: double ducted tilting Subminiature UAV system, this paper put forward a new attitude navigation system:AHRS-based low-cost GPS carrier phase orientation Navigation System. AHRS aids GPS fastly fix the attitude.This article proposed application the constraint solving the ambiguity basic model, which is based on the double differential equations of the carrier phase measurement. Then we use baseline length and the inaccurate attitude angle constraint to solver integer ambiguity. By the static experimental results show that this method is fast, effective, the AHRS-GPS system can provide high accuracy navigation for SUAV.

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Hemerly, Elder M., and Valter R. Schad. "Implementation of an AHRS with GNSS baseline readings." Journal of Aerospace Engineering, Sciences and Applications 2, no. 3 (September 1, 2010): 1–10. http://dx.doi.org/10.7446/jaesa.0203.01.

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Sheng, Hanlin, and Tianhong Zhang. "MEMS-based low-cost strap-down AHRS research." Measurement 59 (January 2015): 63–72. http://dx.doi.org/10.1016/j.measurement.2014.09.041.

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Kim, Min-Kyoung, Tae Yeon Kim, and Joon Lyou. "Performance Improvement of an AHRS for Motion Capture." Journal of Institute of Control, Robotics and Systems 21, no. 12 (December 1, 2015): 1167–72. http://dx.doi.org/10.5302/j.icros.2015.15.0116.

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Su, Zhongbin, Lei Yang, Qingming Kong, and Lei Hong. "AHRS Design Based on STM32 and MEMS Sensors." International Journal of Control and Automation 8, no. 7 (July 31, 2015): 55–66. http://dx.doi.org/10.14257/ijca.2015.8.7.06.

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Kwon, Ki-Hyeon, and Hyung-Bong Lee. "Recognition of Basic Motions for Snowboarding using AHRS." Journal of the Korea Society of Computer and Information 21, no. 3 (March 31, 2016): 83–89. http://dx.doi.org/10.9708/jksci.2016.21.3.083.

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Hong, Hyosung, and Mooncheol Won. "AHRS Development Using Still-State Estimation and Indirect Kalman Filter." Transactions of The Korean Institute of Electrical Engineers 68, no. 6 (June 30, 2019): 797–803. http://dx.doi.org/10.5370/kiee.2019.68.6.797.

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Muntean, Mădălina Maria, Andrei-Alexandru Muntean, François Guerin, Vincent Cattoir, Elodie Creton, Garance Cotellon, Saoussen Oueslati, et al. "Optimization of the rapid carbapenem inactivation method for use with AmpC hyperproducers." Journal of Antimicrobial Chemotherapy 76, no. 9 (June 18, 2021): 2294–301. http://dx.doi.org/10.1093/jac/dkab170.

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Abstract Objectives Detection of carbapenemase-producing Enterobacterales (CPEs) is sometimes difficult with AmpC-hyperproducing Enterobacterales (AHEs), as they may falsely be classified as CPEs. Here, we present a rapid Carbapenem Inactivation Method (rCIM) optimized for AmpC producers (rCIM-A) that allows rapid and easy discrimination between AHEs and CPEs. Methods Enterobacterales (n = 249), including natural AmpC producers, AHEs, CPEs and non-carbapenemase-producing carbapenem-resistant control strains were evaluated, using Carba NP, rCIM and rCIM-A. The rCIM-A differs from the rCIM by the addition of cloxacillin (400 μg/mL) to the initial antibiotic incubation step. Results The rCIM-A yielded a sensitivity and specificity of 84.26% (95% CI: 76.00%–90.55%) and 99.29% (95% CI: 96.11%–99.98%), respectively, while those of the rCIM were 86.11% (95% CI: 78.13%–92.01%) and 80.85% (95% CI: 73.38%–86.99%), respectively; those of Carba NP were lower at 84.04% (95% CI: 75.05%–90.78%) and 91.37% (95% CI: 85.41%–95.46%), respectively, due to indeterminate results. The rCIM-A was capable of discriminating between AHEs and true CPEs, but still failed to identify OXA-23-producing Proteus mirabilis isolates and remained only partially reliable for identifying IMI-like producers and a few MBL (2 NDM-1, 1 LMB-1, 1 TMB-1 and 1 IMP-13) producers. One chromosomally encoded AmpC variant, MIR-10, gave repeatedly positive results using all three tests and was thus considered a false positive. Conclusions Specificity for AHEs greatly improved with the rCIM-A without altering the test performance for the other resistance mechanisms. It may replace the rCIM as a cheap, easy, rapid and accurate CPE detection test.

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Yeh, Jun-Jun, Shih-Hueh Syue, Yi-Fun Sun, Yi-Ting Yeh, Ya-Chi Zheng, Cheng-Li Lin, Chung Y. Hsu, and Chia-Hung Kao. "Hydroxychloroquine on the Pulmonary Vascular Diseases in Interstitial Lung Disease: Immunologic Effects, and Virus Interplay." Biomedicines 10, no. 6 (May 31, 2022): 1290. http://dx.doi.org/10.3390/biomedicines10061290.

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To investigate the effects of hydroxychloroquine (HCQ) drug use on the risk of pulmonary vascular disease (PVD) in an interstitial lung disease cohort (ILD cohort, ILD+ virus infection), we retrospectively enrolled the ILD cohort with HCQ (HCQ users, N = 4703) and the ILD cohort without HCQ (non-HCQ users, N = 4703) by time-dependence after propensity score matching. Cox models were used to analyze the risk of PVD. We calculated the adjusted hazard ratios (aHRs) and their 95% confidence intervals (CIs) for PVD after adjusting for sex, age, comorbidities, index date and immunosuppressants, such as steroids, etc. Compared with the HCQ nonusers, in HCQ users, the aHRs (95% CIs) for PVD were (2.24 (1.42, 3.54)), and the women’s aHRs for PVD were (2.54, (1.49, 4.35)). The aHRs based on the days of HCQ use for PVD of 28–30 days, 31–120 days, and >120 days were (1.27 (0.81, 1.99)), (3.00 (1.81, 4.87)) and (3.83 (2.46, 5.97)), respectively. The medium or long-term use of HCQ or young women receiving HCQ were associated with a higher aHR for PVD in the ILD cohort. These findings indicated interplay of the primary immunologic effect of ILD, comorbidities, women, age and virus in the HCQ users.

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Carboni, Pierre. "Stephen Ahern, ed, Affect and Abolition in the Anglo-Atlantic,." XVII-XVIII, no. 71 (December 31, 2014): 331–32. http://dx.doi.org/10.4000/1718.436.

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Boylan, Kevin M. "Thomas L. Ahern, Jr.,Vietnam Declassified: The CIA and Counterinsurgency." Intelligence and National Security 28, no. 1 (February 2013): 121–23. http://dx.doi.org/10.1080/02684527.2012.713788.

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Burns, Lawton R., John Cacciamani, James Clement, and Welman Aquino. "The Fall Of The House Of AHERF: The Allegheny Bankruptcy." Health Affairs 19, no. 1 (January 2000): 7–41. http://dx.doi.org/10.1377/hlthaff.19.1.7.

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Myers, John E. B. "“Nobody's Perfect”—Partial Disagreement with Herman, Faust, Bridges, and Ahern." Journal of Child Sexual Abuse 21, no. 2 (March 2012): 203–9. http://dx.doi.org/10.1080/10538712.2012.661691.

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Ammone, Stefano Dentice di Accadia. "Rachel Ahern Knudsen: Homeric Speech and the Origins of Rhetoric." Gnomon 88, no. 4 (2016): 289–94. http://dx.doi.org/10.17104/0017-1417-2016-4-289.

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Liu, Qiang, Fu Yin Gao, Chang Gang Wang, and Yu Han. "Improvement of Attitude Estimation Using Modified Rodrigues Parameters and Intelligent Controller." Applied Mechanics and Materials 556-562 (May 2014): 2279–84. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.2279.

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The attitude estimation method of attitude heading reference system (AHRS) using an Extended Kalman Filter (EKF) with a filter tuning algorithm based on fuzzy controller is introduced.The AHRS uses inertial sensors and magnetometers to calculate its attitude. It is known that the attitude update using gyros are prone to diverge and hence the attitude error needs to compensate using accelerometers and magnetometers. In this paper, a Kalman filter model with a state variables represented by Modified Rodrigues Parameters (MRP) is presented to improve the computational efficiency and a model changing algorithm is used to make the filter more robust to acceleration and magnetic disturbances.If the AHRS measures any disturbances which are caused by movement of the vehicle, using fuzzy controller changes the filter gain .Simulation results show, EKF tuned by fuzzy controller is correct method that makes robust to disturbances more properly ,Rodrigues parameters can improve the computational efficiency..

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Yang, Yue, Xiaoxiong Liu, Weiguo Zhang, Xuhang Liu, and Yicong Guo. "A dynamic adaptive AHRS algorithm for UAV based on SVDCKF." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 39, no. 2 (April 2021): 350–58. http://dx.doi.org/10.1051/jnwpu/20213920350.

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Aiming at the attitude solution accuracy and robustness for small UAVs in complex flight conditions, this paper proposes a dynamic adaptive attitude and heading systems(AHRS) estimator with singular value decomposition Cubature Kalman filter(SVDCKF). Considering the problem of random bias for the low-cost attitude sensor, this paper designs a method that the sensor random bias is used as the state vector to eliminate the effect of the sensor random bias. Due to the non-linearity of small UAVs AHRS model and the non-positive definite phenomenon of the covariance matrix, a nonlinear AHRS filter combined with the Cubature Kalman filter and singular value decomposition is designed to improve the attitude solution accuracy. In addition, when the UAV flies in the different flight conditions, the three-axis acceleration of the attitude sensor will affect the attitude solution. Thus, a dynamic adaptive factor based on adaptive filtering is used to adjust continuously the acceleration noise variance to improve the robustness of the AHRS. The experimental results show that the method and algorithm proposed not only improve the attitude solution accuracy, and satisfy the flight requirements of small UAVs, but also eliminate the influence of the attitude sensor random bias and three-axis acceleration for the attitude solution to improve the proposed algorithm robustness and anti-interference.

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Farhangian, Farzan, and Rene Landry. "Accuracy Improvement of Attitude Determination Systems Using EKF-Based Error Prediction Filter and PI Controller." Sensors 20, no. 14 (July 21, 2020): 4055. http://dx.doi.org/10.3390/s20144055.

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Accurate attitude and heading reference system (AHRS) play an essential role in navigation applications and human body tracking systems. Using low-cost microelectromechanical system (MEMS) inertial sensors and having accurate orientation estimation, simultaneously, needs optimum orientation methods and algorithms. The error of attitude estimation may lead to imprecise navigation and motion capture results. This paper proposed a novel intermittent calibration technique for MEMS-based AHRS using error prediction and compensation filter. The method, inspired from the recognition of gyroscope’s error and by a proportional integral (PI) controller, can be regulated to increase the accuracy of the prediction. The experimentation of this study for the AHRS algorithm, aided by the proposed prediction filter, was tested with real low-cost MEMS sensors consists of accelerometer, gyroscope, and magnetometer. Eventually, the error compensation was performed by post-processing the measurements of static and dynamic tests. The experimental results present about 35% accuracy improvement in attitude estimation and demonstrate the explicit performance of proposed method.

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Journal articles on the topic 'AHERS'

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