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Artykuły w czasopismach na temat "PREPOST SELECTOR"
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Hayden, James E. "A Shoemaker Butterfly Prepona laertes (Lepidoptera: Nymphalidae)". EDIS 2017, nr 5 (28.09.2017): 5. http://dx.doi.org/10.32473/edis-in1178-2017.
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Originally published on the Featured Creatures website at http://entnemdept.ufl.edu/creatures/bfly/Prepona_laertes.htm
Includes: Introduction - Distribution - Description - Hosts - Selected References
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Ryu, Ji Sun, i Jung Hyun Chae. "The Effect of Home Economics Instruction Applying Flipped and Problem-Based Learning on Middle-School Students’ Metacognition Skill". Family and Environment Research 60, nr 4 (30.11.2022): 565–76. http://dx.doi.org/10.6115/fer.2022.038.
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The purpose of this study is to identify the effect of Home Economics Instruction applying Flipped and Problem-Based Learning (FPBL) on Korean middle-school students’ metacognition skill. The study uses a prepost design test of the same group. There were 151 participants (77 male and 74 female) who were middleschool students in the third grade. Two hours of classes on ‘Food Selection and Storage’ were given per week for three weeks – a total of six hours. Analysis using the <i>t</i>-test revealed a statistically significant difference between the pre-test and the post-test, supporting the conclusion that participating in the class improved the metacognition, food selection, and storage behavior scores of the middle-school students. All area scores and overall averages of metacognitive sub-elements such as planning, monitoring, regulation, and evaluation also improved after taking FPBL classes. From the results of this study, Home Economics Instruction applying FPBL is an effective teaching method for improving middle-school students’ metacognition.
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Shrestha, Kamei, Shrestha, Aihara, Bhattarai, Bista, Thapa, Kazama i Shindo. "Socioeconomic Impacts of LCD-Treated Drinking Water Distribution in an Urban Community of the Kathmandu Valley, Nepal". Water 11, nr 7 (26.06.2019): 1323. http://dx.doi.org/10.3390/w11071323.
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Groundwater available in the Kathmandu Valley is not suitable for drinking due to chemical and microbial contamination. We installed a treatment system, which was made with locally available materials and was low-cost, and supplied drinking water to the intervention site where groundwater contains high amounts of ammonia, iron, and turbidity. This research aims to evaluate the socioeconomic impact of treated water distribution. One hundred households were randomly selected and asked to use treated water for drinking, and another 100 households in the nearby community were taken randomly as a control. We conducted questionnaire surveys with the enrolled households before and five months after starting water distribution to assess the water use patterns and quality perceptions. The socioeconomic impact of the intervention was evaluated by a prepost comparison and by the difference-in-difference method. The intervention significantly enhanced most of the parameters of water quality perception, reduced the in-house water treatment, and improved the perceived water stress and quality of life. For the control site, these parameters generally became worse in the post-survey, which suggests that the survey might have affected people’s mindset regarding water security. The system is an option for sustainable management of drinking water in the water-scarce, hard-hit areas in the developing countries.
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Trabelsi, Khaled, Nicola Bragazzi, Sahar Zlitni, Aimen Khacharem, Omar Boukhris, Kais El-Abed, Achraf Ammar i in. "Observing Ramadan and sleep-wake patterns in athletes: a systematic review, meta-analysis and meta-regression". British Journal of Sports Medicine 54, nr 11 (1.06.2019): 674–80. http://dx.doi.org/10.1136/bjsports-2018-099898.
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ObjectiveTo evaluate the effect of observing Ramadan on athletes’ sleep patterns.DesignSystematic review and meta-analysis.Data sourcesThe entire content of PubMed/MEDLINE and Web of Science.Eligibility criteria for selecting studiesSingle-group, prepost and cross-over design studies conducted in athletes aged ≥18 years, training at least twice a week and published in English before 12 July 2018 were included. Studies assessing sleep quantity, quality, daytime sleepiness and/or daily naps based on objective or subjective methods were deemed eligible.Study appraisalThe methodological quality was assessed using ‘QualSyst’.ResultsOf 13 selected articles, 7 were of strong quality, 3 were moderate and 3 were weak. 11 studies evaluated total sleep time (TST); this decreased during Ramadan in 4 studies, increased in 1 and remained unchanged in 6. Pooled TST findings indicated a moderate effect size (− 0.97, SE=0.37, 95% CI −1.69 to −0.25, t=−2.64, p=0.01) with significant heterogeneity but no publication bias. Meta-regressions showed no effects of study year, age, sample size, type of sport or competition level, but there were effects of country (with France and Tunisia being the most affected countries and Turkey the least affected, Q=32.14, p<0.0001) and study design (Q=7.74, p=0.02). Four studies measured self-reported sleep quality and it decreased in three studies. One study of sleep architecture reported more frequent waking and more light sleep during Ramadan. Daily nap duration was increased in two studies, but daytime sleepiness remained unchanged in four studies.ConclusionWhen athletes continue to train at least two times/week while observing Ramadan, TST is decreased compared with athletes’ baseline levels.
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Banerjee, Jayanta, Annie Aloysius, Karen Mitchell, Ines Silva, Dimitrios Rallis, Sunit V. Godambe i Aniko Deierl. "Improving infant outcomes through implementation of a family integrated care bundle including a parent supporting mobile application". Archives of Disease in Childhood - Fetal and Neonatal Edition 105, nr 2 (21.06.2019): 172–77. http://dx.doi.org/10.1136/archdischild-2018-316435.
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ObjectiveThe aim of the Integrated Family Delivered Care (IFDC) programme was to improve infant health outcomes and parent experience through education and competency-based training.DesignIn collaboration with veteran parents’ focus groups, we created an experienced co-designed care bundle including IFDC mobile application, which together with staff training programme comprised the IFDC programme. Infant outcomes were compared with retrospective controls in a prepost intervention analysis.Main outcome measuresThe primary outcome measure was the length of stay (LOS).ResultsBetween April 2017 and May 2018, 89 families were recruited; 37 infants completed their entire care episode in our units with a minimum LOS >14 days. From a gestational age (GA) and birth weight-matched retrospective cohort, 57 control infants were selected. Data were also analysed for subgroup under 30 weeks GA (n=20).Infants in the IFDC group were discharged earlier: median corrected GA (36+0 (IQR 35+0–38+0) vs 37+1 (IQR 36+3–38+4) weeks; p=0.003), with shorter median LOS (41 (32–63) vs 55 (41–73) days; p=0.022). This was also evident in the subgroup <30 weeks GA (61 (39–82) vs 76 (68–84) days; p=0.035). Special care days were significantly lower in the IFDC group (30 (21–41) vs 40 (31–46); p=0.006). The subgroup of infants (<30 weeks) reached full suck feeding earlier (median: 47 (37–76) vs 72 (66–82) days; p=0.006).ConclusionThis is the first reported study from a UK tertiary neonatal unit demonstrating significant benefits of family integrated care programme. The IFDC programme has significantly reduced LOS, resulted in the earlier achievement of full enteral and suck feeds.
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Ilyushkin, M. V., i E. S. Kiselev. "Simulation of the processes of drilling polymer composite blanks using digital twins". Frontier materials & technologies, nr 2 (2023): 47–57. http://dx.doi.org/10.18323/2782-4039-2023-2-64-1.
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Polycrystalline composite materials made of carbon fiber reinforced plastics have more and more widespread application in mechanical engineering and become the main material for the production of modern types of high-speed transport. Thus, their share has already reached 35–45 % in the structural design of passenger aircrafts. However, the technology of machining surfaces of parts made of these materials, in particular, holes, is characterized by insufficient knowledge, the absence of regulatory standards for cutting modes and is most often based on the production experience of enterprises. When changing the processing conditions and the material, the pre-production engineering duration causes a significant increase in the cost of manufacturing parts due to the need for experimental selection of the cutting mode rational elements. To exclude the empirical selection of rational elements of the machining equipment cutting mode, the authors considered the possibility of using digital twins for studying the processes of drilling holes in the blanks made of composite materials, including those with the ultrasonic field energy introduction into the new surface shaping zone (to improve the processing quality and productivity). When modeling, the LS-DYNA program was used. The authors prepared the models and processed the results using the LS-PrePost 4.8 program. During the study, an explicit modeling method was used with preliminary validation and calibration of the results of tests of composites. The authors carried out calibration on test operations of tension, three-point bending, and interlaminar shear of the ВКУ-39 polymer composite material based on carbon fibers (carbon fiber reinforced plastic) widely used in domestic engineering. The developed finite element computer models allow simulating drilling procedures without carrying out rather complicated and expensive field tests. As a result of modeling, a simulation file was obtained, which reflects the process of drilling holes in a polymer composite material blank, as close as possible to the real-life situation with chip removal.
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Munaro, Nicola. "Complementizer doubling and subject extraction in Italo-Romance". Linguistic Variation 18, nr 2 (31.12.2018): 315–35. http://dx.doi.org/10.1075/lv.00020.mun.
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Abstract In this article I analyze the complementizer doubling construction attested in some early and modern Italo-Romance varieties, where a preposed (clausal or non clausal) constituent associated to the selected clause appears in the embedded left periphery preceded and followed by a subordinating complementizer. While the higher complementizer is uncontroversially interpreted as a lexicalization of the head Force°, the lower complementizer has been taken to lexicalize either the functional head Topic° or the functional head Fin°. Relying on previous formal analyses of subject extraction, I argue that in the varieties in which the lower complementizer lexicalizes Fin°, its presence reflects the lexicalization of the mood features encoded by Fin°, and is ultimately due to the extraction of the thematic subject out of the embedded clause through Spec,FinP, a movement strategy made possible by the presence of an expletive pro in the canonical preverbal subject position.
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Zhao, Lu, Ya-jie Sun i Zhi-qiang Pan. "Topical Steroids and Antibiotics for Adult Blepharokeratoconjunctivitis (BKC): A Meta-Analysis of Randomized Clinical Trials". Journal of Ophthalmology 2021 (8.01.2021): 1–9. http://dx.doi.org/10.1155/2021/3467620.
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Purpose. A meta-analysis was conducted to evaluate the efficacy and safety of topical treatments (including steroids and antibiotics) for adults with blepharokeratoconjunctivitis (BKC). Methods. The following databases were searched for relevant randomised controlled trials (RCTs): China National Knowledge Infrastructure (CNKI), Web of Science, MEDLINE, PubMed, Embase, and Cochrane Central Register of Controlled Trials database (CENTRAL). Two reviewers selected studies and analyzed the risk of bias independently. The treatments were loteprednol 0.5%/tobramycin 0.3% (LE/T) and dexamethasone 0.1%/tobramycin 0.3% (DM/T). The efficacy outcome measures were change from baseline (CFB) in composite scores of ocular symptoms and signs; the CFB in the signs composite scores for blepharitis, conjunctivitis, and keratitis at each visit; the total ocular adverse event incidence (AEs); and the incidence of intraocular pressure (IOP) increase after treatment. Prepost mean differences (MDs) were compared for continuous outcome variables, and incidences were analyzed for dichotomous data. The pooled effect sizes were analyzed using 95% confidence intervals (CIs) in a fixed-effect model. Heterogeneity was evaluated using the Q-test and I2 statistic. Results. The CFB to final visit in ocular symptoms and signs of BKC was not statistically different between the two treatments (95% CI, −0.33 to 1.50; MD = 0.58; P = 0.21 ). The CFB in signs composite scores for blepharitis (95% CI, −0.16 to 0.48; MD = 0.16; P = 0.32 ), conjunctivitis (95% CI, −0.55 to 1.76; MD = 0.61; P = 0.30 ), and keratitis (95% CI, 0.00–0.28; MD = 0.14; P = 0.05 ) was also similar with the two treatments. LE/T was a safer intervention than DM/T, with fewer overall adverse events (95% CI, 0.34–0.80; RR = 0.52; P = 0.003 ) and significantly less elevation of intraocular pressure (IOP) (95% CI, 0.32–0.70; RR = 0.47; P = 0.0002 ). Conclusions. DM/T and LE/T are both effective treatments for BKC, but LE/T may be a safer intervention.
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Zhao, Lu, Ya-jie Sun i Zhi-qiang Pan. "Topical Steroids and Antibiotics for Adult Blepharokeratoconjunctivitis (BKC): A Meta-Analysis of Randomized Clinical Trials". Journal of Ophthalmology 2021 (8.01.2021): 1–9. http://dx.doi.org/10.1155/2021/3467620.
Pełny tekst źródłaStreszczenie:
Purpose. A meta-analysis was conducted to evaluate the efficacy and safety of topical treatments (including steroids and antibiotics) for adults with blepharokeratoconjunctivitis (BKC). Methods. The following databases were searched for relevant randomised controlled trials (RCTs): China National Knowledge Infrastructure (CNKI), Web of Science, MEDLINE, PubMed, Embase, and Cochrane Central Register of Controlled Trials database (CENTRAL). Two reviewers selected studies and analyzed the risk of bias independently. The treatments were loteprednol 0.5%/tobramycin 0.3% (LE/T) and dexamethasone 0.1%/tobramycin 0.3% (DM/T). The efficacy outcome measures were change from baseline (CFB) in composite scores of ocular symptoms and signs; the CFB in the signs composite scores for blepharitis, conjunctivitis, and keratitis at each visit; the total ocular adverse event incidence (AEs); and the incidence of intraocular pressure (IOP) increase after treatment. Prepost mean differences (MDs) were compared for continuous outcome variables, and incidences were analyzed for dichotomous data. The pooled effect sizes were analyzed using 95% confidence intervals (CIs) in a fixed-effect model. Heterogeneity was evaluated using the Q-test and I2 statistic. Results. The CFB to final visit in ocular symptoms and signs of BKC was not statistically different between the two treatments (95% CI, −0.33 to 1.50; MD = 0.58; P = 0.21 ). The CFB in signs composite scores for blepharitis (95% CI, −0.16 to 0.48; MD = 0.16; P = 0.32 ), conjunctivitis (95% CI, −0.55 to 1.76; MD = 0.61; P = 0.30 ), and keratitis (95% CI, 0.00–0.28; MD = 0.14; P = 0.05 ) was also similar with the two treatments. LE/T was a safer intervention than DM/T, with fewer overall adverse events (95% CI, 0.34–0.80; RR = 0.52; P = 0.003 ) and significantly less elevation of intraocular pressure (IOP) (95% CI, 0.32–0.70; RR = 0.47; P = 0.0002 ). Conclusions. DM/T and LE/T are both effective treatments for BKC, but LE/T may be a safer intervention.
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IVCHENKO, Vadim I., Aliaksei V. SHMIALIOU, Aleksey V. TALALUEV i Aleksey V. OMELIUSIK. "METHODOLOGICAL RECOMMENDATIONS ON TOPOLOGICAL OPTIMIZATION OF POWER STRUCTURES USING NUMERICAL MODELING TOOLS". Mechanics of Machines, Mechanisms and Materials 4, nr 61 (grudzień 2022): 68–79. http://dx.doi.org/10.46864/1995-0470-2022-4-61-68-79.
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Methodological recommendations are proposed for the development of the process of topological optimization of load carrying structures adapted for the use of additive technologies. The stage of postprocessing of the polygonal geometry of the part generated as a result of optimization is considered in detail. The validation stage is included in the process of topological optimization by comparing the calculated and experimental data to assess the operability (strength) of the optimized structure. For the option of manufacturing load carrying structures by 3D printing, it is planned to conduct studies of the mechanical properties of the material obtained on a 3D printer, taking into account the printing settings and the orientation of the material layers relative to the applied load during testing. An example of approbation of the proposed methodological recommendations is given on the example of a load carrying hook included in the design of a wheeled transport anti-ram device. The optimization was performed in the SolidThinking Inspire software environment (Altair Engineering, USA). The results of the calculated and experimental determination of the destructive load are presented for the initial and optimized hook design. For the experiment, the hooks were made of ABS plastic using FDM technology. Finite element models of hooks were developed in the ANSYS Workbench software package (ANSYS, USA). Assignment of material properties, boundary conditions and applied load is performed in the LS-PrePost application, calculation in the LS-DYNA solver (ANSYS, USA). The calculated and experimental efficiency estimates were 44.4 and 57.8 %, i.e. their difference is within 13.4 %. The zones and the nature of the destruction identified by calculation and experimentally completely coincide. The results obtained confirm the correctness of the proposed methodological recommendations, the selected modeling approaches and the determination of the properties of the material of the structure manufactured by 3D printing.
Rozprawy doktorskie na temat "PREPOST SELECTOR"
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PRANAVSESH, V. S. "DESIGN AND ANALYSIS OF PREPOST SELECTOR FROM 30MHz TO 3000MHz". Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15200.
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A prepost selector improves the performance of any receiver. Typically it is tuned to have a narrow bandwidth centered on the operating frequency of the receiver .the signal which passes through the prepost selector is declined slightly ,but attenuates other signals reducing unwanted signals. A prepost selector may be designed so that in addition to mitigating the unwanted signals ,it protect the receiver from damage caused by the input voltage spikes.
In this research the idea is to design a prepost selector whiach can handle any signal within the frequency range 30MHz to 3000Mhz .which is realized using a set of tunable bandpass filters with constant fractional bandwidth(7.5%). Depending on the frequency of interest to be passed through the filter switches are used to select between the available filters . Each filter can handle a band of frequencies to pass through. Filters are made tunable by using reverse biased varactor diodes. Total 8 filters are used to cover the frequency range 30MHz to 3000MHz. First filter is a high pass filter remaining all filters are bandpass filters. Within the bandpass filters first 5 filters are lumped element structures and two of them are microstripline structures, since lumped elements will not give good response at high frequencies. All filters are simulated and verified before fabricating. Finally module is fabricated and tested. All the results of simulation and testing results are given in detail.
Części książek na temat "PREPOST SELECTOR"
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Sluckin, Benjamin L., Silvio Cruschina i Fabienne Martin. "Locative inversion in Germanic and Romance". W Continuity and Variation in Germanic and Romance, 165–92. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198841166.003.0007.
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This chapter investigates locative inversion (LI) in Germanic and Romance, a subject inversion involving a preposed locative expression. LI appears in two primary types: overt LI and covert LI, where a locative reading obtains without a preposed locative. Covert LI occurs in null-subject languages, where a covert locative argument satisfies formal subject requirements. English LI is always overt, yet French only allows covert LI with verbs of appearance. Furthermore, Romance permits embedded and matrix LI, but English prohibits the former. This chapter proposes that cross-linguistic variation follows from varying conspiracies of syntactic and pragmatico-semantic factors. Firstly, verbs of appearance select a locative covert experiencer, which satisfies the French EPP. Secondly, multiple formal ingredients interact in different distributions to produce various instantiations of LI: an EPP in TP, and the ability of locatives to check: the EPP (Dutch), Subject of Predication (Italian), EPP and SoP (French), and EPP and Topichood (English).
Streszczenia konferencji na temat "PREPOST SELECTOR"
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Wen, Shuwen, Simon Slater, Richard Freeman i Martin Connelly. "Finite Element Modelling of Deepwater UOE Linepipe Manufacturing". W ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49450.
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Advanced finite element (FE) modelling techniques have been developed for simulation of the UOE linepipe manufacturing process. A through-process modelling approach is adopted using the general purpose FE package ABAQUS, mainly based on 2D plane strain or generalised plane strain assumptions. The FE models developed so far are capable of simulating the UOE pipe forming procedures from plate with machined weld preps, including edge crimping, U-ing, O-ing and pipe expansion (UOE). The FE models also have the ability to simulate the submerged arc welding (SAW) process prior to pipe expansion so that the effect of welding induced residual stresses and strains as well as the weld geometry could be considered adequately in the following FE analysis that is to be performed. Some of the most important aspects of the FE models, such as the prediction of strain distribution, spring back and loading, have been validated against experimental measurements obtained from various plant trials. Extensive parametric studies have been carried out using these FE models to investigate the influence of lubrication on the forming performance, as well as the deformation characteristics of the edge preps in the O-press. The FE modelling techniques are being routinely used to provide practical guidance on tooling design, selection and setting, particularly for the production of smaller diameter and thick-walled linepipes for deep and ultra-deepwater oil and gas applications, where the quality, integrity and consistency of the pipes delivered are critical. Other aspects of the FE modelling exercise relevant to the in-service performance of the pipeline will also be briefly discussed in this paper, including the prediction of residual stress, distortion and ovality, and their affects on pipe collapse resistance.
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Syed Mohammed, Amer Ali, i Ali Al Naji. "Digital Well Construction—A Success Story". W International Petroleum Technology Conference. IPTC, 2022. http://dx.doi.org/10.2523/iptc-22674-ms.
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Abstract Drilling projects are often challenging and complex, depending on the size of the project. But they also come with an opportunity to implement new innovative technologies to overcome challenges, excel in performance, and achieve higher efficiencies. With approximately 11 lump sum turnkey (LSTK) rigs operating in a project, an integrated drilling service provider (IDSP) recognized the opportunity to make significant gains in the well-construction process. Operating in four different onshore fields, the well engineering and execution team is challenged by vast amount of data to work with, multidomain teams to manage, and a complex iterative process of planning and execution. In addition, to increase profitability within the LSTK contract, the IDSP team is always challenged to introduce new strategies to maximize efficiency and improve overall drilling performance. In principle, optimizing both planning and execution phases of the well-construction cycle is essential to achieve a higher level of efficiency and consistency. Traditionally, throughout the design and execution phases of a well, engineers work in silos, split into multidisciplinary teams each focused on their area of expertise. The workflow would normally include constant data exchange, extensive nonlinked engineering analyses, and repetitive tasks. This eventually increases the risk of inconsistencies and reduces the overall efficiency. To overcome these challenges and excel in performance, focus was turned toward deploying digital drilling solutions. The IDSP team deployed a digital platform that is aimed at connecting well-construction planning and operations workflows together in a loop, providing all the data and related science in one place. By adopting a digital well-planning solution, the team has reinvented complex and multidisciplinary well-planning processes. The solution enabled automation and collaboration features that helped engineering teams to reduce time spent in data gathering and exchanging, reengineering designs, and creating/updating drilling programs. This ultimately allowed the engineering teams to focus on technical challenges while maintaining planning coherency. By deploying a digital well-operations solution, the IDSP team successfully digitalized the drilling system on the rig and automated key repetitive tasks of the driller. This included intelligent parameter selection to improve on-bottom rate of penetration (ROP) and mitigate drilling dysfunctions automatically, sending consistent downhole commands to improve downlinking success ratio, and drill a stand to consistently follow drilling procedure and reduce weight-to-weight connection times. With more than 180,000 ft drilled with a digital operations solution in control, more than 1,100 automated prepost connections and around 1,400 automated downhole commands sent, the IDSP achieved an estimated savings of approximately 2 days per well. In this paper we will further highlight how the new digital drilling technology was deployed and how we created value on the LSTK drilling project by describing the data-driven workflows used during planning and the tools that automated drilling operations during execution.