Relevant bibliographies by topics / HVHT

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Academic literature on the topic 'HVHT'

Author: Grafiati
Published: 4 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "HVHT"

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Ramian, Haleh, Lindsay Sabik, Zhaojun Sun, Jonathan Yabes, and Bruce Jacobs. "Abstract PR004: Urban/rural differences in receiving cancer surgery at high-volume hospitals and sensitivity to hospital volume thresholds." Cancer Epidemiology, Biomarkers & Prevention 32, no. 1_Supplement (2023): PR004. http://dx.doi.org/10.1158/1538-7755.disp22-pr004.

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Abstract Research Objective: There is strong evidence that hospital volume is associated with improved outcomes for patients undergoing surgery for cancer across a number of common cancers, yet there is no consensus on how to classify hospitals as high-volume. Further, lack of access to high-volume hospitals (HVHs) may contribute to rural-urban disparities in cancer outcomes. This study examines urban/rural differences in receipt of cancer surgery at HVHs and sensitivity to volume thresholds used. Study Design: We used logistic regression models to examine the association between cancer surgery at a HVH and individual and area factors using different volume thresholds that are commonly used in the literature: top 10%, 20%, 25%, and 30%. Population Studied: Using 2017-2020 statewide Pennsylvania Health Care Cost Containment Council (PHC4) inpatient data, we identified patients ages 18+ with a diagnosis of 10 cancers (lung, pancreas, breast, brain, rectum, bladder, colon, esophagus, prostate, stomach) who underwent a cancer-related surgery. Principal Findings: We found variability in the number of hospitals classified as high-volume as well as the percentage of surgeries performed at HVH. Across the 10 cancers examined, the relationship between rural residence and treatment in a HVH varied by cancer type, and for some cancers, varied depending on the volume threshold used. There was a consistent negative relationship between rural residence and surgery at a high-volume hospital for breast and lung cancer; for colon and prostate cancers the association was generally negative but only significant using certain high-volume thresholds. For esophageal and pancreatic cancer, there was a positive relationship between rural residence and surgery at a HVH and therefore, compared to urban counties, patients with esophageal and pancreatic cancer in rural counties were more likely to be treated at a HVH. Among less prevalent cancers (bladder, stomach, rectum and brain) there was less consistency in the relationship between rural residence and treatment at a HVH across different thresholds. Conclusions: For many cancers, rural patients are less likely to receive care at HVHs, though the relationship differs across cancers and depending on volume threshold examined. Findings highlight the complexity of examining patterns of cancer care at HVHs, and the importance of protocols outlining minimum procedural volume thresholds. Positive relationships between rural residence and treatment at a HVH may result from selection effects if rural patients are less likely to receive surgery overall. Implications for Policy or Practice: There has been interest in using treatment at HVHs as a quality metric for determining reimbursement, including for breast cancer in the New York Medicaid program in recent years. Our findings highlight the complexity of developing such programs for other cancers. This study informs protocols focusing on high-volume thresholds and have implications for surgical education and training. Citation Format: Haleh Ramian, Lindsay Sabik, Zhaojun Sun, Jonathan Yabes, Bruce Jacobs. Urban/rural differences in receiving cancer surgery at high-volume hospitals and sensitivity to hospital volume thresholds [abstract]. In: Proceedings of the 15th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2022 Sep 16-19; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2022;31(1 Suppl):Abstract nr PR004.
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Loehrer, Andrew P., David C. Chang, Zirui Song, and George J. Chang. "Health Reform and Utilization of High-Volume Hospitals for Complex Cancer Operations." Journal of Oncology Practice 14, no. 1 (2018): e42-e50. http://dx.doi.org/10.1200/jop.2017.025684.

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Purpose: Underinsured patients are less likely to receive complex cancer operations at hospitals with high surgical volumes (high-volume hospitals, or HVHs), which contributes to disparities in care. To date, the impact of insurance coverage expansion on site of complex cancer surgery remains unknown. Methods: Using the 2006 Massachusetts coverage expansion as a natural experiment, we searched the Hospital Cost and Utilization Project state inpatient databases for Massachusetts and control states (New York, New Jersey, and Florida) between 2001 and 2011 to evaluate changes in the utilization of HVHs for resections of bladder, esophageal, stomach, pancreatic, rectal, or lung cancer after the expansion of insurance coverage. We studied nonelderly, adult patients with private insurance and those with government-subsidized or self-pay (GSSP) coverage with a difference-in-differences framework. Results: We studied 11,687 patients in Massachusetts and 56,300 patients in control states. Compared with control states, the 2006 Massachusetts insurance expansion was associated with a 14% increased rate of surgical intervention for GSSP patients (incident rate ratio, 1.14; P = .015), but there was no significant change in the probability of GSSP patients undergoing surgery at an HVH (1.0 percentage-point increase; P = .710). The reform was associated with no change in the uninsured payer-mix at HVHs (0.6 percentage-point increase; P = .244) and with a 5.1 percentage-point decrease for the uninsured payer mix at low-volume hospitals ( P < .001). Conclusion: The 2006 Massachusetts insurance expansion, a model for the Affordable Care Act, was associated with increased rates of complex cancer operations and increased insurance coverage but with no change in utilization of HVH for complex cancer operations.
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Althumairi, Azah A., Joseph K. Canner, Michael A. Gorin, et al. "Reduction of Costs for Pelvic Exenteration Performed by High Volume Surgeons: Analysis of the Maryland Health Service Cost Review Commission Database." American Surgeon 82, no. 1 (2016): 46–52. http://dx.doi.org/10.1177/000313481608200123.

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High volume hospitals (HVHs) and high volume surgeons (HVSs) have better outcomes after complex procedures, but the association between surgeon and hospital volumes and patient outcomes is not completely understood. Our aim was to evaluate the impact of surgeon and hospital volumes, and their interaction, on postoperative outcomes and costs in patients undergoing pelvic exenteration (PE) in the state of Maryland. A review of the Maryland Health Services Cost Review Commission database between 2000 and 2011 was performed. Patients were compared for demographics and clinical variables. The differences in length of hospital stay, length of intensive care unit (ICU) stay, operating room (OR) cost, and total cost were compared for surgeon volume and hospital volume controlling for all other factors. Surgery performed by HVS at HVH had the shortest ICU stay and lowest OR cost. When PE was performed by a low volume surgeon at an HVH, the OR cost and total cost were the highest and increased by $2,683 ( P < 0.0001) and $16,076 ( P < 0.0001), respectively. OR costs reduced when surgery was performed by an HVS at an HVH ($-1632, P = 0.008). PE performed by HVS at HVH is significantly associated with lower OR costs and ICU stay. We feel this is indicative of lower complication rates and higher quality care.
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Ohki, Shingo, Makoto Otani, Shinichi Tomioka, et al. "Association between hospital case volume and mortality in pediatric sepsis: A retrospective observational study using a Japanese nationwide inpatient database." Journal of Critical Care Medicine 11, no. 1 (2025): 87–94. https://doi.org/10.2478/jccm-2025-0006.

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Abstract Introduction The survival benefits of treatment at high-volume hospitals (HVHs) are well-documented for several critical pediatric conditions. However, their impact on pediatric sepsis, a leading cause of mortality among children, remains understudied. Aim of the study To investigate the association between hospital case volume and mortality rates in pediatric sepsis. Material and Methods We conducted a retrospective cohort study using data from the Diagnosis Procedure Combination database. The study included patients who met the following criteria: 1) aged 28 days to 17 years; 2) discharged from the hospital between April 2014 and March 2018; 3) had a sepsis diagnosis coded under the International Classification of Diseases, 10th revision; 4) underwent blood cultures on hospital admission day (day 0) or day 1; 5) received antimicrobial agents on day 0 or 1; and 6) required at least one organ support measure (e.g., mechanical ventilation or vasopressors) on day 0 or 1. Hospitals were categorized by case volume during the study period, with HVHs defined as those in the highest quartile and low-volume hospitals (LVHs) as those in the remaining quartiles. In-hospital mortality rates between HVH and LVH groups were compared using mixed-effects logistic regression analysis with propensity score (PS) matching. Results A total of 934 pediatric patients were included in the study, with an overall in-hospital mortality rate of 16.1%. Of them, 234 were treated at 5 HVHs (≥26 patients in 4 years), and 700 at 234 LVHs (<26 patients in 4 years). Upon PS matching, patients treated at HVHs demonstrated significantly lower odds of in-hospital mortality compared with those treated at LVHs (odds ratio, 0.42; 95% confidence interval, 0.22–0.80; P = 0.008). Conclusions In pediatric patients with sepsis, treatment at HVHs was associated with lower odds of in-hospital mortality.
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Vold, Tonje. "Hvit støy." Samtiden 116, no. 01 (2007): 14–29. http://dx.doi.org/10.18261/issn1890-0690-2007-01-04.

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Killingbeck, John P., Alain Grosjean, and Georges Jolicard. "Complex variable HVPT." Journal of Physics A: Mathematical and General 37, no. 32 (2004): 7971–76. http://dx.doi.org/10.1088/0305-4470/37/32/010.

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Miao, Huijie, Fei Wang, Xi Xiong, Chunxia Wang, and Yucai Zhang. "Clinical Benefits of High-Volume Hemofiltration in Critically Ill Pediatric Patients with Severe Sepsis: A Retrospective Cohort Study." Blood Purification 45, no. 1-3 (2017): 18–27. http://dx.doi.org/10.1159/000481249.

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Aims: The study aimed to assess the clinical benefits of high-volume hemofiltration (HVHF) in pediatric patients with severe sepsis compared with standard-volume continuous veno-venous hemofiltration (CVVH). Methods: We retrospectively analyzed the medical records of 155 pediatric patients with severe sepsis admitted to the pediatric intensive care unit of Shanghai Children's Hospital from January 2010 to June 2016. A total of 93 patients were treated with HVHF and 62 patients were treated with CVVH. Results: HVHF treatment did not significantly reduce 28-day mortality. Moreover, there was no significant difference in reducing the plasma level of inflammatory mediators and improving hemodynamic variables between HVHF and CVVH group. However, the incidence of hyperglycemia was significantly higher in HVHF group than in CVVH group. Conclusions: There is no evidence to indicate that HVHF is superior to CVVH in reducing 28-day mortality as an adjunct to the treatment of severe sepsis in pediatric patients.
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Bovi, Joseph, Stephanie Pugh, David Sabesevitz, et al. "RADI-04. PRETREATMENT VOLUME OF MRI-DETERMINED WHITE MATTER INJURY (WMI) PREDICTS COGNITIVE DECLINE AFTER HIPPOCAMPAL AVOIDANT (HA) WBRT FOR BRAIN METASTASES: SECONDARY ANALYSIS OF NRG ONCOLOGY RTOG 0933." Neuro-Oncology Advances 1, Supplement_1 (2019): i22. http://dx.doi.org/10.1093/noajnl/vdz014.097.

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Abstract PURPOSE: RTOG 0933 demonstrated benefits to memory following HA-WBRT, supporting the hypothesis of hippocampal radiosensitivity and associated memory specificity. However, some patients demonstrated cognitive decline, suggesting mechanisms outside hippocampal radiosensitivity playing a role. WMI has been implicated in RT-induced cognitive decline. This secondary analysis explored the relationship between pre-treatment WMI and memory following HA-WBRT. METHODS AND MATERIALS: 113 patients received HA-WBRT. Standardized cognitive assessments were performed at baseline, 2, 4, and 6 months. The primary endpoint was Hopkins Verbal Learning Test Delayed Recall (HVLT-DR) at 4 mos. Secondary endpoints included HVLT Total Recall (HVLT-TR) and Recognition (HVLT-Recog). Of 113 patients, 34 underwent pre-treatment and 4-month post-treatment HVLT testing and pre-treatment post-contrast volumetric T1 and axial T2/FLAIR MRI. Volumetric analysis of metastatic disease burden and disease-unrelated WMI was conducted on the pre-treatment MRI. Correlational analyses were performed examining the relationship between pre-treatment WMI and HVLT outcomes following HA-WBRT. RESULTS: Correlation was found between larger volumes of pre-treatment WMI and decline in HVLT-Recog (r=.54, p< .05) and a correlational trend was observed between larger volume of pre-treatment WMI and decline in HVLT-DR (r=.31, p=.08). Patients with higher pre-treatment disease burden experienced a greater magnitude of stability or positive shift in HVLT-recall and –delayed recall following HA-WBRT. (r=-.36 and r=-.36, p’s < .05), compared to the magnitude of stability/positive shift in those with lesser disease burden. CONCLUSION: In patients receiving HA-WBRT, pre-treatment-WMI predicts memory decline, suggesting white matter integrity pre-treatment contributes to the pathogenesis of post-WBRT cognitive toxicity independent of hippocampal stem cell radiosensitivity. Less decline or improvement in HVLT following HA-WBRT for patients with higher pre-treatment intracranial metastatic burden supports the importance of WBRT-induced intracranial control on cognition. These imaging biomarkers for cognitive toxicity will be further explored on NRG CC001 and CC003, phase III trials of WBRT with or without HA.
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Heyman, Benjamin, Michael Choi, and Thomas J. Kipps. "A + AVD for Treatment of Hodgkin Lymphoma Variant of Richter’s Transformation." Case Reports in Hematology 2024 (February 24, 2024): 1–8. http://dx.doi.org/10.1155/2024/7612622.

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Hodgkin lymphoma variant of Richter’s transformation (HvRT) is a rare complication for patients with chronic lymphocytic leukemia (CLL), with an overall poor prognosis. We present the first known case series of patients with HvRT treated with the combination of brentuximab vedotin, doxorubicin, vinblastine, and dacarbazine (A + AVD). In our series of 4 patients, two patients treated with A + AVD for HvRT had durable remissions of 40 and 42 months, while two patients had disease progression and ultimately died. Continued investigation into the optimal management for patients with HvRT is still needed.
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Killingbeck, John P., Alain Grosjean, and Georges Jolicard. "Complex HVPT and hyperasymptotics." Journal of Physics A: Mathematical and General 39, no. 34 (2006): L547—L550. http://dx.doi.org/10.1088/0305-4470/39/34/l01.

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Dissertations / Theses on the topic "HVHT"

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Gilfert, Kaitlyn Emily. "The Directionality of English Vowel Substitution Errors in /hVt/ Context." Miami University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=miami1493727644000904.

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Mercati, Stefano, Fabrizio Panizzolo, and Giovanni Profumo. "Power split Hydro-mechanical Variable Transmission (HVT) for off-highway application." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200396.

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Nowadays the needs to fulfill severe emission standards and to reduce the mobile machine operative costs have driven the off-highway industrial research towards new solutions able to increase the overall vehicle efficiency. Within this scenario, smart power split transmissions demonstrated to be a very attractive technology able to achieve the fuel consumption reduction targets, increasing the machine working cycle productivity. Compared to the standard technologies (such as Torque Converters - TC), the power split hydromechanical varible transmissin (HVT), designed and developed by Dana Rexroth Transmission Systems S.r.l. (DRTS), is able to fully decouple the engine to wheel behavior during the machine working cycle, with an higher efficiency than a pure hydrostatic transmission. Due to this fundamental characteristic, the HVT allows the engine to work next to the maximum efficiency point, consequently it is possible to downsize the engine to further increase the fuel saving. The analysis of the field test performed by an off-highway vehicle (Kalmar Cargotec DRG Gloria 450 reachstacker) equipped with a DRTS HVT has been shown along this paper; particular attention has been given to the cycle load spectra, the fuel consumption and the working cycle productivity through a comparison with standard TC technologies.
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Oksanen, Kara A. "Goodness and Accentedness Ratings of /hVt/ Tokens by Aware and Naïve Listeners." Miami University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=miami1430416994.

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Ersch-Arnolds, Miriam [Verfasser]. "„hvat heiðnir menn myndu til jóla vita“ : Altwestnordische Quellen zur Julzeit und das kollektive Gedächtnis / Miriam Ersch-Arnolds." Bonn : Universitäts- und Landesbibliothek Bonn, 2021. http://d-nb.info/1238687857/34.

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Dunzow, Katharina. "Die Auswirkung von High-Variability-Training auf die Perzeption und Produktion des Gespanntheitskontrasts bei russischsprachigen Deutschlernenden." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/19749.

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Es wird untersucht, ob das High-Variability-Training (HVT) die Perzeptions- und Produktionsleistungen des Gespanntheitskontrastes deutscher Vokale bei russischspra-chigen Deutschlernenden positiv beeinflusst. Dafür wurde in Anlehnung an bekannte HVT-Studien ein Aussprachetraining speziell für die Vokaldauer konzipiert. Basis ist die Gegenüberstellung zweier phonetischer Lautkontraste als Minimalpaare der fünf deutschen Vokale (A, E, I, O, U). An dem HVT nahmen dreißig fortgeschrittene russischsprachige Lernende des Deut-schen mit muttersprachlich bedingten Fehlern der L2-Vokalproduktion teil, gemäß dem Lernalter (während bzw. nach der kritischen Phase) in zwei Untersuchungsgruppen (RM1, RM2) getrennt. Die Untersuchung verlief in drei Phasen (Pretest, Training und Posttest). Das Training bestand aus acht Sitzungen von jeweils ca. zwanzig Minuten Dauer. Davor und danach wurden die Produktions- und Perzeptionsfähigkeiten ermittelt. Die Testdaten ergeben, dass 73,3 % der RM1- und 80 % der RM2-Probanden die Perzeptionsleistung der deutschen Vokalphoneme signifikant steigerten. In beiden Gruppen stiegen ebenfalls tendenziell die Produktionsfähigkeiten, 66,7 % der RM1- und 60 % der RM2-Probanden erhöhten sie signifikant. Dennoch konnte kein Teil-nehmer eine Vokalproduktion auf muttersprachlichem Niveau erreichen. Gezieltes HVT-Aussprachetraining wirkt sich demnach positiv auf die Perzeption und Produktion des Gespanntheitskontrastes bei russischsprachigen Deutschlernenden aus und ist eine effektive Erweiterung für den Vokalerwerb auch für fortgeschrittene L2-Lernende. Diese Erkenntnis unterstützt die Ergebnisse der Studien von Logan et al. (1991), Wang et al. (1999), Cenoz & Garciá-Lecumberri (1999), Lambacher et al. (2005), Nishi & Kewley-Port (2007), Iverson & Evans (2009), Liatambur & Lai (2011), Iverson, Pinet & Evans (2012), Wong (2012), Rato (2014), Jügler et al. (2015).<br>This study investigates whether high variability training (HVT) positively influences perception and production of the tension contrast of German vowels in Russian-speaking learners of German. For this task a pronunciation training course was developed especially for vowel length, drawing on established HVT studies. The basis for this is the comparison of two phonetic contrasts as minimal pairs, taken from the five German vowels (A, E, I, O, U). 30 advanced Russian-speaking learners of German with mother tongue interference in L2 vowel production took part in the HVT, separated according to learning age (during or after the critical phase) into two study groups (RM1, RM2). The study took place in three phases (pre-test, training and post-test). The training consisted of eight sessions, each of approx. 20 minutes in length. Production and perception abilities were tested before and after this. The test results show that 73.3% of the RM1 and 80% of the RM2 test subjects significantly increased their ability to perceive the German vowel phonemes. In both groups the production abilities also tended to rise, with 66.7% of the RM1 and 60% of the RM2 test subjects improving them significantly. However, no participant was able to achieve vowel production at native speaker level. This shows that targeted HVT pronunciation training has a positive effect on the perception and production of tension contrast in Russian-speaking learners of German and is an effective extension for vowel development, also for advanced L2 learners. These findings support the results of studies by Logan et al. (1991), Wang et al. (1999), Cenoz & Garciá-Lecumberri (1999), Lambacher et al. (2005), Nishi & Kewley-Port (2007), Iverson & Evans (2009), Liatambur & Lai (2011), Iverson, Pinet & Evans (2012), Wong (2012), Rato (2014), Jügler et al. (2015).
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Gisslén, Ida. "Mandarin L1 speakers’ difficulty with phonetic perception in English as an L2." Thesis, Högskolan i Gävle, Engelska, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-35993.

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The study focuses on three research questions. The first question addresses whether it is possible to improve phonetic perception in English as an L2 for Chinese primary school children speaking Mandarin as an L1, through the didactic methods High Variability Phonetic Training and Onset Rhyme Detection Test. The second question addresses if it is possible to improve phonetic perception over a short period of time, using didactic methods focused on improving phonetic perception during two sessions for each method. The third and last question addresses, if it is one of the two didactic methods, High Variability Phonetic Training and Onset Rhyme Detection Test, is better than the other in a short-term learning situation. Forty-five students participated in the study, divided into three groups; one was a control group. Two groups received treatment, one with the Onset Rhyme Detection Test and the other High Variability Phonetic Training method. All groups conducted a pretest and posttest. The results revealed that the two methods used had some positive effect on the development of phonetic perception for Chinese primary school children. Through didactic methods, it is possible to improve phonetic perception to some extent, even during a short period of time.
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Darteil, Raphaël. "Utilisation de l'herpèsvirus de la dinde (HVT) comme vecteur d'expression de la protéine immunogène VP2 du virus de la maladie de Gumboro (IBDV)." Lyon 1, 1995. http://www.theses.fr/1995LYO1T208.

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Lazarevich, Alison Kay. "Partial Discharge Detection and Localization in High Voltage Transformers Using an Optical Acoustic Sensor." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/32624.

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A partial discharge (PD) is the dissipation of energy caused by the buildup of localized electric field intensity. In high voltage devices such as transformers, this buildup of charge and its release can be symptomatic of problems associated with aging, such as floating components and insulation breakdown. This is why PD detection is used in power systems to monitor the state of health of high voltage transformers. If such problems are not detected and repaired, the strength and frequency of PDs increases and eventually leads to the catastrophic failure of the transformer, which can cause external equipment damage, fires and loss of revenue due to an unscheduled outage. Reliable online PD detection is a critical need for power companies to improve personnel safety and decrease the potential for loss of service. The PD phenomenon is manifested in a variety of physically observable signals including electric and acoustic pulses and is currently detected using a host of exterior measurement techniques. These techniques include electrical lead tapping and piezoelectric transducer (PZT) based acoustic detection. Many modern systems use a combination of these techniques because electrical detection is an older and proven technology and acoustic detection allows for the source to be located when several sensors are mounted to the exterior of the tank. However, if an acoustic sensor could be placed inside the tank, not only would acoustic detection be easier due to the increased signal amplitude and elimination of multipath interference, but positioning could also be performed with more accuracy in a shorter time. This thesis presents a fiber optic acoustic sensing system design that can be used to detect and locate PD sources within a high voltage transformer. The system is based on an optical acoustic (OA) sensor that is capable of surviving the harsh environment of the transformer interior while not compromising the transformerâ s functionality, which allows for online detection and positioning. This thesis presents the theoretical functionality and experimental validation of a band-limited OA sensor with a usable range of 100-300 kHz, which is consistent with the frequency content of an acoustic pulse caused by a PD event. It also presents a positioning system using the time difference of arrival (TDOA) of the acoustic pulse with respect to four sensors that is capable of reporting the three-dimensional position of a PD to within ±5cm on any axis.<br>Master of Science
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Song, Lijun. "Detection and Position Location of Partial Discharges in Transformers Using Fiber Optic Sensors." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/35928.

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Power transformers are one of the most important components in the electrical energy network. Extending transformer life is very economically valuable due to power outage. Therefore the development of instruments to monitor the transformer condition is of great interest. Detection of partial discharges (PDs) in power transformers is an effective diagnostic because it may reveal and quantify an important aging factor and provide information on the condition of the transformer. However, partial discharge diagnostics are still not effectively used for online monitoring of transformers because of the complexity of PD measurements and difficulties of discriminating of PDs and other noise sources. This thesis presents a further study of detection and location of partial discharges in power transformers based on previous work conducted at the Center for Photonics Technology (CPT) at Virginia Tech. The detection and positioning system consists of multiple extrinsic Fabry-Parot interferometric (EFPI) fiber acoustic sensors which can survive the harsh environment of oil-filled transformers. This thesis work is focused on optimal arrangement of multiple sensors to monitor and locate PD activities in a power transformer. This includes the following aspects. First, the sensor design requirements are discussed in order to successfully detect and accurately position the PD sources. In the following sections, Finite Element Method (FEM) is used to model the EFPI sensor fabricated at CPT. Experiments were conducted to measure the angular dependence of the frequency response of the sensor. It is shown that within the range of ±45º incident angles, the sensitivity varies by 3-5dB. Finally, the thesis demonstrates a PD positioning experiment in a 500 gallon water tank (R à H = 74" à 30" cylinder) using a hyperbolic positioning algorithm and time difference of arrival (TDOA). Finally we demonstrated that 100% of the positioning data is bounded by a 22.7à 4.1à 5.3 mm3 cube, with a sensing range of 810 mm using the leading edge method with FIR filtering.<br>Master of Science
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Aslan, Selcuk. "The molecular genotyping of flower development genes and allelic variations in ‘historic’ barley accessions." Thesis, Linköping University, Molecular genetics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57106.

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<p>This is a genetic study of flowering time in cultivated barley with the aim to identify the alleles contributing to rapid flowering and frost resistance. We have genotyped a collection of 23 historic barley varieties for the crucial genes [<em>VRN-1, VRN-2, VRN-3</em> (<em>HvFT</em>), <em>Ppd-H1, CO</em>, and <em>Vrs1</em>]. We have amplified the polymorphic mutations by PCR-based methods, and sequenced them to identify possible haplotype groups. The row type was not determined of all accessions, but all the Scandinavian varieties were found to carry mutant alleles of <em>Vrs1</em>, that indicates them to be six-row barleys. The deletion of the crucial segment of <em>VRN-1 </em>vernalization contributes dominant spring growth habit. We found haplotype groups 2 and 4 to be dominant in Northern barleys whereas haplotype groups 1 and 5 dominated in south. The presence of dominant allele <em>VRN-2</em> gene is addressed to floral repression until plants get vernalized. Most of the 23 varieties were found to have deleted allele of <em>VRN-2</em>, which is connected with a spring growth habit. The only four of the accessions that have the dominant allele of <em>Ppd-H1</em> that contribute flowering are generally from the south of Europe. <em>HvFT</em> and <em>CO</em> genes <em>CO</em>-interact to influence flowering time. <em>CO</em> haplotype grouping suggest a geographical distribution of different alleles but needs more disseminations. Certain <em>HvFT</em> alleles cause extremely early flowering during apex development in the varieties that have deletion of <em>VRN-2</em> alleles under long days. <em>VRN-3</em> alleles of 14 varieties were identified.</p>
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Books on the topic "HVHT"

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Skogheim, Dag. Blod på hvit rose: Erindringer. Tiden Norsk Forlag, 2012.

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Rommelfanger, Ulrich. Das Hessische Vergabe- und Tariftreuegesetz (HVGT) 2021. Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-37536-2.

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Hlíf, Halldórsdóttir Jóna. Brim hvít sýn = Surf white vision. 2008-2020. Ástríki útgafa, 2021.

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Sandmo, Jon. Hvit kittel, sort kull: Verksleger på Svalbard, 1905-1980. Store norske Spitsbergen kulkompani, 2005.

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Buzza, Robin. Hvit villmark: Om en ferd i Svalbards natur og menneskets sinn. Grøndahl Dreyer, 1994.

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International Conference on Heavy Vehicles (2008 Paris, France). International Conference on Heavy Vehicles: HVParis 2008 : heavy vehicle transport technology (HVTT 10). ISTE Ltd., 2008.

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Ford, Michael. Liber Hvhi. Lulu Press, Inc., 2010.

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Hvit natt: Roman. Gyldendal, 2006.

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Ford, Michael. Liber Hvhi: Magick of the Adversary. Lulu.com, 2005.

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Hvat er tao imyndaoa Norour? Etiskar grundreglur. Presses de l'Université du Québec, 2020.

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Book chapters on the topic "HVHT"

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Grib, Andrey Anatoljevich, and Waldyr Alves Rodrigues. "Hidden Variables Theories (HVT)." In Nonlocality in Quantum Physics. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4687-0_9.

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Grib, Andrey Anatoljevich, and Waldyr Alves Rodrigues. "De Broglie-Bohm Relativistic HVT." In Nonlocality in Quantum Physics. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4687-0_11.

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Grib, Andrey Anatoljevich, and Waldyr Alves Rodrigues. "De Broglie-Bohm Non Relativistic HVT." In Nonlocality in Quantum Physics. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4687-0_10.

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Rommelfanger, Ulrich. "2 Änderung der Hessischen Landeshaushaltsordnung." In Das Hessische Vergabe- und Tariftreuegesetz (HVGT) 2021. Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-37536-2_2.

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Rommelfanger, Ulrich. "1 Hessisches Vergabe- und Tariftreuegesetz (HVTG)." In Das Hessische Vergabe- und Tariftreuegesetz (HVGT) 2021. Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-37536-2_1.

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Rommelfanger, Ulrich. "3 Ausblick." In Das Hessische Vergabe- und Tariftreuegesetz (HVGT) 2021. Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-37536-2_3.

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Arnold, Martin. "Hvat er tröll nema þat?: The Cultural History of the Troll." In Arizona Studies in the Middle Ages and Renaissance. Brepols Publishers, 2005. http://dx.doi.org/10.1484/m.asmar-eb.5.143630.

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Huang, Yuhua, Shen Li, Wanlin Sun, Xuejun Dai, and Wei Zhu. "HVH: A Lightweight Hash Function Based on Dual Pseudo-Random Transformation." In Security, Privacy, and Anonymity in Computation, Communication, and Storage. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68884-4_41.

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"HVOT." In Encyclopedia of Clinical Neuropsychology. Springer New York, 2011. http://dx.doi.org/10.1007/978-0-387-79948-3_4528.

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"HVLT-R." In Encyclopedia of Clinical Neuropsychology. Springer New York, 2011. http://dx.doi.org/10.1007/978-0-387-79948-3_4210.

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Conference papers on the topic "HVHT"

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Tiellet, Claudio A. B., André Grahl Pereira, Eliseo Berni Reategui, José Valdeni Lima, and Teresa Chambel. "HVet." In the 21st ACM conference. ACM Press, 2010. http://dx.doi.org/10.1145/1810617.1810692.

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Wang, Yifei, Hui Wang, Chang Liu, Lingbo Xie, and Lei Ding. "An Improved HVRT Control Strategy for DFIG." In 2020 IEEE/IAS Industrial and Commercial Power System Asia (I&CPS Asia). IEEE, 2020. http://dx.doi.org/10.1109/icpsasia48933.2020.9208473.

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Al-Shami, Forcan, Walcir Cardoso, and Damian Yukio Romero Diaz. "Exploring high-variability phonetic training through text-to-speech technology in ESL pronunciation pedagogy." In EuroCALL 2024: CALL for humanity. Universitat Politècnica de València, 2024. https://doi.org/10.4995/eurocall2024.2024.19077.

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This study investigates the integration of Text-To-Speech (TTS) technology into High-Variability Phonetic Training (HVPT) to enhance pronunciation skills among English as a Second Language (ESL) learners. Addressing one of the limitations of traditional classrooms, in which access to varied speech sounds and accents is restricted, this study explores whether TTS can effectively supplement pronunciation training by providing diverse auditory input outside the classroom, enabling learners to access a wide range of English accents in a semi-autonomous environment. Thirty intermediate-level adult ESL learners from Kuwait participated in a month-long training program. They were divided into an experimental group, which received HVPT with exposure to multiple English accents (varied by region, gender, age) via TTS, and a control group, which used a single TTS voice. Pretest and posttest evaluations assessed changes in pronunciation accentedness and comprehensibility, using a panel of 11 raters. The results revealed that the experimental group showed significant improvements in both accentedness, and comprehensibility compared to the control group. This study highlights the potential of TTS to offer variable aural input to enhance ESL pronunciation training, thus providing valuable insights for developing effective and accessible language learning materials.
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Jeesoo Lee and Yookun Cho. "HVH. . .VH multi-layer channel routing." In [1991] Proceedings. Fourth CSI/IEEE International Symposium on VLSI Design. IEEE, 1991. http://dx.doi.org/10.1109/isvd.1991.185130.

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Qin, Yanhui, Baoyu Zhai, Qi Yang, Zian Li, Zhichao Yang, and Bingtuan Gao. "Dynamic equivalent modeling of wind farm considering HVRT characteristic." In 2022 IEEE Sustainable Power and Energy Conference (iSPEC). IEEE, 2022. http://dx.doi.org/10.1109/ispec54162.2022.10033048.

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Febbo, Huckleberry, Tulga Ersal, and Jeffrey L. Stein. "A Combined Plant/Controller Optimization Framework for Hybrid Vehicles With MPG, Emissions and Drivability Considerations." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-60335.

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The design and control of hybrid-electric vehicle (HEV) powertrains presents an optimization problem to balance the trade-off between multiple objectives, such as fuel economy, driv-ability, and emissions. However, current design methodologies do not simultaneously incorporate all of these three considerations into both the sizing and control layers of the optimization problem. This paper first demonstrates that the trade-offs between these objectives can be non-trivial in the HEV control problem. This motivates the need for a systematic design procedure that can take all three objectives into account. To address this need, the paper describes the development of a new and efficient design framework called the Hybrid-Vehicle Design Tool (HVDT), which adopts a bi-level optimization strategy. Efficiency is achieved by introducing a neural-network-based meta-model to predict the performance of the optimal control strategy obtained using Dynamic Programming (DP). To demonstrate the HVDT, a small HEV is designed for the UDDS and HWFET driving cycles separately. Results show that the optimized design can reduce fuel consumption, improve emissions and improve driv-ability when compared to the nominal design obtained using first principle design methodologies. Additionally, compared to using DP directly in the bi-level optimization, using the meta-model reduces the simulation from 238 to 16 days (93%) and from 132 to 16 days (88%) for the UDDS and HWFET cycles, respectively, with an acceptable compromise in the accuracy of predicting the performance of DP.
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Fu, J., X. Yan, D. Wang, H. Liu, and D. Cheng. "L/HVRT scheme of offshore permanent magnet synchronous wind turbine." In 18th International Conference on AC and DC Power Transmission (ACDC 2022). Institution of Engineering and Technology, 2022. http://dx.doi.org/10.1049/icp.2022.1412.

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Sreedevi, J., and Honnesh C. Sannappaiah. "LVRT and HVRT analysis of Grid connected Solar PV system." In 2023 IEEE International Conference on Power Electronics, Smart Grid, and Renewable Energy (PESGRE). IEEE, 2023. http://dx.doi.org/10.1109/pesgre58662.2023.10404801.

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Fang, Chen, Jiahao Xu, Xinchi Wei, et al. "Comparison and Analysis of HVRT/LVRT of Energy Storage System." In 2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG). IEEE, 2023. http://dx.doi.org/10.1109/pedg56097.2023.10215123.

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Bouaziz, Fatma, Achraf Abdelkafi, Abdelkarim Masmoudi, and Lotfi Krichen. "Improved LVRT/HVRT Capability Of DFIG Wind Turbine Using DVR." In 2022 5th International Conference on Advanced Systems and Emergent Technologies (IC_ASET). IEEE, 2022. http://dx.doi.org/10.1109/ic_aset53395.2022.9765942.

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Reports on the topic "HVHT"

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Ingram, Charlie, Sarah Whatley, Nick Henry, and Susanne Foellmer. Innovatory Methods in Policymaking: Introducing the Use of Verbatim Theatre. Coventry University, 2022. http://dx.doi.org/10.18552/cdare/2024/0002.

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This report introduces Headphone Verbatim Theatre (HVT), a method of data gathering that involves a performance created solely from the words spoken by interview participants. HVT responds to the challenges faced by policymakers around incorporating citizen experiences in policy design and evaluation. After identifying the problem policymakers currently face in capturing the voices of citizens, the report outlines the method of HVT and summarises its key benefits. Through embedded video clips, the report gives examples of where the method has been used and further, how dissemination in a live performance offers an effective and emotive connection between citizens and policy makers. In the final section it details the method’s operational requirements.
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Trettel, Ben. RANS modeling of RTI and HVDT with BHR3. Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1048873.

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Wang, Wen I. InAs HVT for Extremely Low Power and High Speed Applications. Defense Technical Information Center, 2005. http://dx.doi.org/10.21236/ada438567.

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Bouwman, K. M., C. A. Jansen, M. C. M. de Jong, et al. Progress report: transmission study testing HVT-H5 vaccine against highly pathogenic avian influenza (HPAI) H5N1 virus (clade 2.3.4.4b) : second report, 24-weeks post vaccination VAXXITEK HVT+IBD+H5 and VAXXITEK HVT+IBD+H5 + Volvac® B.E.S.T. AI+ND vaccine. Wageningen Bioveterinary Research, 2024. https://doi.org/10.18174/670266.

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Germeraad, E. A., K. M. Bouwman, C. A. Jansen, et al. Progress report: transmission study testing HVT-based H5 vaccine against highly pathogenic avian influenza (HPAI) H5N1 virus (clade 2.3.4.4b) : First report, 8-weeks post vaccination with VAXXITEK HVT+IBD+H5. Wageningen Bioveterinary Research, 2024. http://dx.doi.org/10.18174/662098.

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Johnson, Jay Dean. Improving the Sandia Test Protocols with Advanced Inverter Functionality Testing of INV3, VV11, FW21, and L/HVRT. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1325945.

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Bouwman, K. M., C. A. Jansen, M. C. M. de Jong, et al. Progress report: Transmission study testing HVT-H5 vaccine against highly pathogenic avian influenza (HPAI) H5N1 virus (clade 2.3.4.4b) : Second report, 24-weeks post vaccination VECTORMUNE® AI vaccine. Wageningen Bioveterinary Research, 2024. https://doi.org/10.18174/669647.

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Germeraad, E. A., K. M. Bouwman, C. A. Jansen, J. L. Gonzales, and N. Beerens. Progress report: transmission study testing HVT-based H5 vaccine against highly pathogenic avian influenza (HPAI) H5N1 virus (clade 2.3.4.4b) : First report, 8-weeks post vaccination with Vectormune® AI. Wageningen Bioveterinary Research, 2024. http://dx.doi.org/10.18174/656515.

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