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Academic literature on the topic 'ACFDT'
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Journal articles on the topic "ACFDT"
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Zhang, Min-Ye, Zhi-Hao Cui, and Hong Jiang. "Relative stability of FeS2polymorphs with the random phase approximation approach." Journal of Materials Chemistry A 6, no. 15 (2018): 6606–16. http://dx.doi.org/10.1039/c8ta00759d.
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Everhart, Lucas M., Julio A. Derteano, and Jefferson E. Bates. "Tension between predicting accurate ground state correlation energies and excitation energies from adiabatic approximations in TDDFT." Journal of Chemical Physics 156, no. 8 (2022): 084116. http://dx.doi.org/10.1063/5.0080382.
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The connection between the adiabatic excitation energy of time-dependent density functional theory and the ground state correlation energy from the adiabatic connection fluctuation–dissipation theorem (ACFDT) is explored in the limiting case of one excited state. An exact expression is derived for any adiabatic Hartree-exchange–correlation kernel that connects the excitation energy and the potential contribution to correlation. The resulting formula is applied to the asymmetric Hubbard dimer, a system where this limit is exact. Results from a hierarchy of approximations to the kernel, including the random phase approximation (RPA) with and without exchange and the adiabatically exact (AE) approximation, are compared to the exact ones. At full coupling, the numerical results indicate a tension between predicting an accurate excitation energy and an accurate potential contribution to correlation. The AE approximation is capable of making accurate predictions of both quantities, but only in parts of the parameter space that classify as weakly correlated, while RPA tends to be unable to accurately predict these properties simultaneously anywhere. For a strongly correlated dimer, the AE approximation greatly overestimates the excitation energy yet continues to yield an accurate ground state correlation energy due to its accurate prediction of the adiabatic connection integrand. If similar trends hold for real systems, the development of correlation kernels will be important for applications of the ACFDT in systems with large potential contributions to correlation.
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Ma, Zhu, Chengyin Han, Xunda Jiang, et al. "Production of 87Rb Bose-Einstein Condensate in an Asymmetric Crossed Optical Dipole Trap." Chinese Physics Letters 38, no. 10 (2021): 103701. http://dx.doi.org/10.1088/0256-307x/38/10/103701.
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We report the production of 87Rb Bose–Einstein condensate in an asymmetric crossed optical dipole trap (ACODT) without the need of an additional dimple laser. In our experiment, the ACODT is formed by two laser beams with different radii to achieve efficient capture and rapid evaporation of laser cooled atoms. Compared to the cooling procedure in a magnetic trap, the atoms are firstly laser cooled and then directly loaded into an ACODT without the pre-evaporative cooling process. In order to determine the optimal parameters for evaporation cooling, we optimize the power ratio of the two beams and the evaporation time to maximize the final atom number left in the ACODT. By loading about 6 × 105 laser cooled atoms in the ACODT, we obtain a pure Bose–Einstein condensate with about 1.4 × 104 atoms after 19 s evaporation. Additionally, we demonstrate that the fringe-type noises in optical density distributions can be reduced via principal component analysis, which correspondingly improves the reliability of temperature measurement.
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Woźny, Piotr. "Qualitative analysis of maintenance and services carried out in a repair plant on the example of a multi-purpose aircraft." Journal of KONBiN 36, no. 1 (2015): 165–74. http://dx.doi.org/10.1515/jok-2015-0065.
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Abstract The article presents revealed failures and damages of the multi-task aircraft (ACFT) reported by users to the service organization, aimed at assessing and removing them. In the course of the analysis process, damages and malfunctions were grouped, depending on aviation specialities. A review was conducted that targeted occurring malfunctions and damages in a set of ACFT of the same type, over a twelve-year operational period. In the assessed period, trend lines were determined, showing a drop in the number of accepted claims submitted by ACFT users.
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Maldonado Araya, Felipe, Mauricio Campos Pardo, Andrea García Prado, and María Angélica Cereceda Miranda. "Perfil facial blando y relación distal de segundos molares en niños con dentición primaria completa." Odontología Sanmarquina 22, no. 3 (2019): 173–79. http://dx.doi.org/10.15381/os.v22i3.16706.
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Objetivo. Evaluar los tipos de perfil facial blando mediante los ángulos de convexidad facial (ACF) y convexidad facial total (ACFT) y su relación con la posición distal de los segundos molares primarios en niños entre 3 y 5 años. Métodos. Estudio transversal en 28 niños chilenos con al menos un apellido de origen español y dentición primaria completa, quienes cumplían con los requisitos del estudio. Para evaluar el ACF y ACFT se tomó fotografía digital estandarizada del perfil lateral. Con la prueba exacta de Fisher se comparó los perfiles blandos según edad y género, y con t de Student para muestra única se evaluó los promedios angulares. Resultados. Para el ACF la media fue 167,1° ± 5,1, y para ACFT 145,8° ± 3,7. Se observó convexidad alta del ACF en 21,4% de los niños, media en 60,7% y baja en 17,9%; y para el ACFT en 17,9%, 67,9% y 14,2% respectivamente. El promedio del ACF para la relación molar escalón mesial, plano vertical y escalón distal fue de 169,2° ± 3.7, 168° ± 4,9 y 162,5°±4,8, mientras que para ACFT fue 146,7° ± 4,4, 146,3° ± 3,6 y 143,5° ± 2,8 respectivamente. Conclusiones. Se observó para ACF relación significativa entre la presencia de perfil convexo alto y escalón distal, además de diferencia significativa entre el promedio de este ángulo en escalón distal en comparación al promedio de referencia. El ACF puede ser indicador aceptable de escalón distal, sin embargo, no es certero al evaluar un plano vertical o escalón mesial.
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Heinrich, Katie M., Aspen E. Streetman, Filip Kukić, et al. "Baseline Physical Activity Behaviors and Relationships with Fitness in the Army Training at High Intensity Study." Journal of Functional Morphology and Kinesiology 7, no. 1 (2022): 27. http://dx.doi.org/10.3390/jfmk7010027.
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United States Army soldiers must meet physical fitness test standards. Criticisms of the Army Physical Fitness Test (APFT) include limited testing of only aerobic and muscular endurance activity domains; yet, it is unclear what levels of aerobic and muscle strengthening activity may help predict performance in aspects of the new Army Combat Fitness Test (ACFT). This study explored relationships between baseline self-reported aerobic and muscle strengthening activities and APFT- and ACFT-related performance. Baseline participant data (N = 123) were from a cluster-randomized clinical trial that recruited active-duty military personnel (mean age 33.7 ± 5.7 years, 72.4% White, 87.0% college-educated, 81.5% Officers). An online survey was used for self-report of socio-demographic characteristics and weekly aerobic and muscle-strengthening physical activity behaviors. Participants also completed the APFT (2 min push-ups, 2 min sit-ups, 2-mile run) and ACFT-related measures (1-repetition maximum deadlift, pull-up repetitions or timed flexed arm hang, horizontal jump, and dummy drag). Bivariate logistic regression found greater aerobic and muscle-strengthening activity predicted better APFT performance, while better ACFT-related performance was predicted by greater muscle-strengthening activity. Although our data are mostly from mid-career officers, command policies should emphasize the new Holistic Health and Fitness initiative that encourages regular aerobic and muscle-strengthening physical activity for soldiers.
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Ratnayake, Irushi, Susannah Ahern, and Rasa Ruseckaite. "Acceptability of patient reported outcome measures (PROMs) in a cystic fibrosis data registry." BMJ Open Respiratory Research 8, no. 1 (2021): e000927. http://dx.doi.org/10.1136/bmjresp-2021-000927.
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IntroductionImprovements in the treatment of cystic fibrosis (CF) have resulted in longer survival and an increased focus on optimising daily functioning with the condition. Patient-reported outcome measures (PROMs) are valuable tools in evaluating the health-related quality of life of persons with chronic diseases. PROMs may be incorporated into clinical registries to assess and provide feedback regarding the health-related quality of life of the affected population. This study uses qualitative methodology to describe the views of patients with CF, caregivers and clinicians on the usefulness and practicality of incorporating a PROM in the Australian Cystic Fibrosis Data Registry (ACFDR).MethodsWe conducted semistructured interviews with a convenience sample of patients with CF (n=5), caregivers (n=7) and clinicians (n=13) on their opinions on incorporating the Cystic Fibrosis Questionnaire-Revised or the Cystic Fibrosis Quality of Life Questionnaire into the ACFDR. We analysed data into topics and subtopics using conventional content analysis.ResultsParticipants believed that PROMs could generate useful aggregate health-related quality of life data to support better understanding of the experiences of the modern CF population. Participants emphasised that implementation must be supported by processes to feedback data to patients and clinicians. Most participants preferred electronic PROMs administration for easy integration into existing systems and the potential to support feedback.ConclusionPatients, caregivers and clinicians in this study generally supported the usefulness and practicality of PROM implementation in the ACFDR.
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Ratnayake, Irushi, Susannah Ahern, and Rasa Ruseckaite. "Patient-Reported Outcome Measures in Cystic Fibrosis: Protocol for a Systematic Review." JMIR Research Protocols 9, no. 5 (2020): e15467. http://dx.doi.org/10.2196/15467.
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Background Patients with cystic fibrosis (CF) can struggle with burdensome symptoms and treatment regimens that negatively affect every aspect of their life. As physiological parameters can fail to capture these complications, the assessment of health-related quality of life (HRQOL) has gained prominence. HRQOL can be measured using standardized patient questionnaires called patient-reported outcome measures (PROMs). The Australian Cystic Fibrosis Data Registry (ACFDR) collects clinical data on adult and pediatric patients with CF. The incorporation of PROMs into the ACFDR would enable monitoring of HRQOL trends, benchmarking of HRQOL outcomes, and support of HRQOL research in CF. Objective Prior to incorporation of a PROM in the ACFDR, this systematic review was planned to evaluate whether any suitable PROMs are currently being used for CF. Methods This systematic review will be conducted in compliance with the PRISMA-P (Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols) guidelines. MEDLINE, EMBASE, Scopus, CINAHL (Cumulative Index of Nursing and Allied Health Literature), PsycINFO, and Cochrane Library databases were searched for articles published between January 2009 and February 2019 on the use of PROMs to measure HRQOL in adult and pediatric patients with CF. Study designs such as observational studies, reviews and validation studies were included. Studies describing randomized controlled trials, dissertations, books, guideline statements, and abstracts were excluded. The COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) risk of bias checklist was used to assess the methodological quality of included studies. A descriptive synthesis of the results will be undertaken in line with the outcomes of this study. Results As of July 2019, the search has been conducted and 4530 records were screened. After two phases of screening, 97 studies were included in the final review and subjected to data extraction. Reviewers are currently in the process of critical appraisal. Conclusions This review will identify any PROM(s) that may be used to measure HRQOL in the ACFDR. Trial Registration PROSPERO International Prospective Register of Systematic Reviews CRD42019126931; https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=126931
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Tolinacki, Maja, Jelena Lozo, Katarina Veljovic, Milan Kojic, Djordje Fira, and Ljubisa Topisirovic. "Examination of antimicrobial potential in natural isolates of lactobacillus casei/paracasei group." Genetika 44, no. 3 (2012): 661–77. http://dx.doi.org/10.2298/gensr1203661t.
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The aim of this study was to investigate the antimicrobial potential of 52 natural isolates of Lactobacillus casei/paracasei. The incidence of relevant genes encoding BacSJ (bacSJ2-8/bacSJ2-8i gene cluster), acidocin 8912 (acdT), ABC-transporter (abcT) and accessory protein (acc) was also studied. These genes were found to be widespread amongst the analyzed L. casei/paracasei strains. The bacSJ2-8/bacSJ2-8i gene cluster was present in 49 (94.23%) and acdT in 41 (78.85%) of the 52 tested strains. Forty of these strains (76.92%) harbored both analyzed genes. Interestingly, only 17 strains (32.69%) with the bacSJ2-8/bacSJ2-8i gene cluster and/or the acdT gene showed bacteriocin production. Strain L. paracasei BGNK1-62 contained the bacSJ2-8/bacSJ2-8i gene cluster, but did not produce bacteriocin BacSJ possibly due to absence of the abcT and acc genes. Hence, these genes were introduced into BGNK1-62 by transformation with constructed plasmid pA2A, after which BacSJ was produced. In addition, it was found that L. paracasei BGGR2-66 produced new bacteriocin designated as BacGR that was biochemically characterized and its N- terminal sequence was determined.
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Duy Tran, Anh, Somjit Arch-int, and Ngamnij Arch-int. "Approximation Measures for Conditional Functional Dependencies Using Stripped Conditional Partitions." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 3 (2017): 1385. http://dx.doi.org/10.11591/ijece.v7i3.pp1385-1397.
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Conditional functional dependencies (CFDs) have been used to improve the quality of data, including detecting and repairing data inconsistencies. Approximation measures have significant importance for data dependencies in data mining. To adapt to exceptions in real data, the measures are used to relax the strictness of CFDs for more generalized dependencies, called approximate conditional functional dependencies (ACFDs). This paper analyzes the weaknesses of dependency degree, confidence and conviction measures for general CFDs (constant and variable CFDs). A new measure for general CFDs based on incomplete knowledge granularity is proposed to measure the approximation of these dependencies as well as the distribution of data tuples into the conditional equivalence classes. Finally, the effectiveness of stripped conditional partitions and this new measure are evaluated on synthetic and real data sets. These results are important to the study of theory of approximation dependencies and improvement of discovery algorithms of CFDs and ACFDs.