Journal articles: 'Longitudinal Value'

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Bradley, Steve. "The value of longitudinal data." Practice Management 29, no. 9 (October 1, 2019): 30–31. http://dx.doi.org/10.12968/prma.2019.29.9.30.

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White, Richard T., and Hanna J. Arzi. "Longitudinal Studies: Designs, Validity, Practicality, and Value." Research in Science Education 35, no. 1 (March 2005): 137–49. http://dx.doi.org/10.1007/s11165-004-3437-y.

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de Pechpeyrou, Pauline. "How consumers value online personalization: a longitudinal experiment." Direct Marketing: An International Journal 3, no. 1 (March 27, 2009): 35–51. http://dx.doi.org/10.1108/17505930910945723.

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Chen, Long, Jinjie Chen, and Jianxi Wang. "Calculation of Reasonable Tension Value for Longitudinal Connecting Reinforcement of CRTSII Slab Ballastless Track." Applied Sciences 8, no. 11 (November 2, 2018): 2139. http://dx.doi.org/10.3390/app8112139.

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There is confusion in the original design concept for the tensioning of longitudinally connected reinforcement of the CRTSII (China Railway Track System) slab ballastless track. In order to clarify the effect of tension value of longitudinal reinforcement on the mechanical characteristics of the ballastless track, a three-dimensional finite element model, considering the nonlinear interaction between the track slab and cement-emulsified asphalt (CA) mortar of the CRTSII slab ballastless track, was established. The mechanical characteristics of the track structure under longitudinal tension load and temperature gradient load of the longitudinal joint were calculated. A method of applying prestress to post-pouring concrete was proposed according to the concept of prestress loss of pretensioning prestressed concrete, a reasonable tensile force value was proposed after the crack width, and the reinforcement stress of the ballastless track in the operation stage was checked and calculated according to the concrete design principle. When the tension force is greater than 300 kN, it is harmful to the bonding between the slab and mortar layer, which is prone to interlayer damage. In order to add prestress to concrete with wide joints to ensure the longitudinal stability of the ballastless track, and that the reinforcement stress and crack width meet design requirements, it is suggested that the tension force value should be 230 kN. Further, the temperature difference between reinforcement and concrete should be 30 °C before the initial curdle of wide joint concrete.

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Jacobs, Jeffrey P., David M. Overman, and James S. Tweddell. "The Value of Longitudinal Follow-Up and Linked Registries." Journal of the American College of Cardiology 78, no. 17 (October 2021): 1714–16. http://dx.doi.org/10.1016/j.jacc.2021.08.041.

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Doot, Robert K., Larry A. Pierce, Darrin Byrd, Brian Elston, Keith C. Allberg, and Paul E. Kinahan. "Biases in Multicenter Longitudinal PET Standardized Uptake Value Measurements." Translational Oncology 7, no. 1 (February 2014): 48–54. http://dx.doi.org/10.1593/tlo.13850.

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Hayward, Geoffrey, Shyamal Asher, Brian Gebhardt, and Andrew Maslow. "Right Ventricular Assessment: Are Regional Longitudinal Measurements of Value?" Journal of Cardiothoracic and Vascular Anesthesia 34, no. 8 (August 2020): 2148–51. http://dx.doi.org/10.1053/j.jvca.2020.03.004.

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Oren, Ohad, and David H. Henry. "A Longitudinal Definition of the Value of Cancer Drugs." Blood 128, no. 22 (December 2, 2016): 1185. http://dx.doi.org/10.1182/blood.v128.22.1185.1185.

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Background Cancer drugs now account for a greater fraction of the national health care expenditure than ever before. A new movement has been formed that argues for meaningful definition of the value of drugs as a pre-requisite for their approval as well as for clinical decision-making. Numerous frameworks have been designed to allow comparison of different pharmacological agents based on patient-related factors (efficacy, safety, cost). However, these formulas largely ignore chronic, long-term toxicities which are particularly important in the case of highly-curable cancers like Hodgkin Lymphoma and testicular cancer. We propose a drug value scheme that incorporates debilitating and life-threatening long-term toxicities along with traditional factors (efficacy and acute safety) when defining a drug's merit. Methods A longitudinal framework for assessing drug value is suggested. Pertinent drug-related characteristics - efficacy, acute adverse events, and long-term toxicities - are included. For each drug characteristic, patient-centred surrogate markers are chosen: efficacy is defined by the 10-year overall survival, acute safety by the rate of neutropenia and life-threatening infections, and long-term toxicity by the cumulative incidence of secondary cancers and heart disease at 5 and 10 years, respectively. Advanced Hodgkin Lymphoma is chosen for simulation. The most commonly used regimens are compared. Data from high-value prospective clinical trials (see references) are used to grade each regimen. Points are given for each percentile range in each category (higher score for greater efficacy and lower toxicity; see Appendix 1). Percentile intervals are chosen according to the presumed clinical impact. The net value of each regimen is assessed by adding the score for each individual care component and comparing it to a similar model that does not include long-term toxicity. Results Risk score calculation yielded results as shown in Table 1. ABVD And Stanford V gained the highest score (26; of 30) while COPP-EBV-CAD and BEACOPP obtained lower scores (24 and 22, respectively). Stanford V reached a better value score than COPP-EBV-CAD, and was equivalent to ABVD, in contrast to a drug value scheme that neglected long-term toxicities, in which it was inferior to both. The superiority of ABVD to COPP-EBV-CAD and BEACOPP persisted in the model, as was the overall advantage of COPP-EBV-CAD over BEACOPP. Conclusions As the treatment of cancer continues to improve, value should no longer be derived only from a drug's overall survival and acute injury profiles. A more comprehensive appreciation of a drug's benefit-to-risk ratio entails an understanding of its more distant health implications. Our model shows that such an easily-constructible framework results in a different value estimation of drugs compared with the traditional one. Appendix 1: Value Score: - Efficacy * Overall Survival: 7 if <74.9%, 8 if 75.0-80.9%, 9 if 81.0-85.9%, 10 if 86.0-88.9%, 11 if >89.0% - Acute toxicity * Incidence of severe infections: 3 if >10.0%, 4 if 5.0-9.9%, 5 if <4.9% * Incidence of grade 3 neutropenia: 1 if > 50.0%, 2 if 28.0-49.9%, 3 if <27.9% - Late toxicity * Incidence of heart disease at 5 years: 1 if >5.6%, 3 if 4.0-5.5%, 4 if 2.0-3.9%, 5 if <1.9% * Incidence of secondary cancers at 10 years: 6 if <3.9%, 4 if 4.0-9.0%, 3 if 9.1-13.0%, 1 if >13.1% *** Example: ABVD value score = 9 (for OS of 85%) + 5 (for severe infection incidence of 2%) + 3 (for grade 3 neutropenia incidence of 25%) + 3 (for 5-year heart disease incidence of 5.5%) + 6 (for 10-year secondary cancer incidence of 0.9%) = 26 References: 1. Merli F, et al. JCO. 2016;34(11):1175-81 2. Manuel Gotti, et al. Lymphoma. 2013, Article ID 952698, 7 pages 3. Kara M, et al. Blood. 2011;117:2596-2603 4. Evens, et al. Br J Haematol. 2013;161(1): 76-86 5. Chisesi T, et al. J Clin Oncol, 2011;29:4227-4233 6. Gobbi PG, et al. J Clin Oncol. 2005; 23:9198-9207 7. Bhanu Vakkalanka. Advances in Hematology, vol. 2011, Article ID 656013, 7 pages, 2011 8.Massimo Federico et al. J Clin Oncol. 2009;27(5):805-811 9.Gobbi P G, et al. JCO. 2005; 23 (36):9198-9207 10. S. M. Edwards-Bennett, et al. Annals of Oncology. 2010; 21: 574-581 Disclosures No relevant conflicts of interest to declare.

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Vollmer, William M. "Comparing change in longitudinal studies: Adjusting for initial value." Journal of Clinical Epidemiology 41, no. 7 (January 1988): 651–57. http://dx.doi.org/10.1016/0895-4356(88)90117-5.

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Rosenthal, Leslie. "Unemployment Incidence following Redundancy: The Value of Longitudinal Approaches." Sociological Review 37, no. 1_suppl (May 1989): 187–213. http://dx.doi.org/10.1111/j.1467-954x.1989.tb03343.x.

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Grittner, Ulrike, Gerhard Gmel, Samuli Ripatti, Kim Bloomfield, and Matthias Wicki. "Missing value imputation in longitudinal measures of alcohol consumption." International Journal of Methods in Psychiatric Research 20, no. 1 (February 24, 2011): 50–61. http://dx.doi.org/10.1002/mpr.330.

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Tower-Rader, Albree, Divyanshu Mohananey, Andrew To, Harry M. Lever, Zoran B. Popovic, and Milind Y. Desai. "Prognostic Value of Global Longitudinal Strain in Hypertrophic Cardiomyopathy." JACC: Cardiovascular Imaging 12, no. 10 (October 2019): 1930–42. http://dx.doi.org/10.1016/j.jcmg.2018.07.016.

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Martineau, Joseph A. "Distorting Value Added: The Use of Longitudinal, Vertically Scaled Student Achievement Data for Growth-Based, Value-Added Accountability." Journal of Educational and Behavioral Statistics 31, no. 1 (March 2006): 35–62. http://dx.doi.org/10.3102/10769986031001035.

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Longitudinal, student performance-based, value-added accountability models have become popular of late and continue to enjoy increasing popularity. Such models require student data to be vertically scaled across wide grade and developmental ranges so that the value added to student growth/achievement by teachers, schools, and districts may be modeled in an accurate manner. Many assessment companies provide such vertical scales and claim that those scales are adequate for longitudinal value-added modeling. However, psychometricians tend to agree that scales spanning wide grade/developmental ranges also span wide content ranges, and that scores cannot be considered exchangeable along the various portions of the scale. This shift in the constructs being measured from grade to grade jeopardizes the validity of inferences made from longitudinal value-added models. This study demonstrates mathematically that the use of such “construct-shifting” vertical scales in longitudinal, value-added models introduces remarkable distortions in the value-added estimates of the majority of educators. These distortions include (a) identification of effective teachers/schools as ineffective (and vice versa) simply because their students’ achievement is outside the developmental range measured well by “appropriate” grade-level tests, and (b) the attribution of prior teacher/school effects to later teachers/schools. Therefore, theories, models, policies, rewards, and sanctions based upon such value-added estimates are likely to be invalid because of distorted conclusions about educator effectiveness in eliciting student growth. This study identifies highly restrictive scenarios in which current value-added models can be validly applied in high-stakes and low-stakes research uses. This article further identifies one use of student achievement data for growth-based, value-added modeling that is not plagued by the problems of construct shift: the assessment of an upper grade content (e.g., fourth grade) in both the grade below and the appropriate grade to obtain a measure of student gain on a grade-specific mix of constructs. Directions for future research on methods to alleviate the problems of construct shift are identified as well.

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Hardy, Rebecca, and Dara O’Neill. "Life course biological trajectories: maximising the value of longitudinal studies." Annals of Human Biology 47, no. 2 (February 17, 2020): 227–28. http://dx.doi.org/10.1080/03014460.2020.1737732.

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Filippov, I. G., and K. Kudainazarov. "Boundary-value problems of longitudinal vibrations of circular cylindrical shells." International Applied Mechanics 34, no. 12 (December 1998): 1204–10. http://dx.doi.org/10.1007/bf02700874.

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Gallarza, Martina G., Francisco Arteaga, and Irene Gil-Saura. "The value of volunteering in special events: A longitudinal study." Annals of Tourism Research 40 (January 2013): 105–31. http://dx.doi.org/10.1016/j.annals.2012.08.001.

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Vecchione, Michele, Anna K. Döring, Guido Alessandri, Gilda Marsicano, and Anat Bardi. "Reciprocal Relations across Time between Basic Values and Value-expressive Behaviors: A Longitudinal Study among Children." Social Development 25, no. 3 (August 18, 2015): 528–47. http://dx.doi.org/10.1111/sode.12152.

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Hartlage, Gregory R., Jonathan H. Kim, Patrick T. Strickland, Alan C. Cheng, Nima Ghasemzadeh, Maria A. Pernetz, Stephen D. Clements, and B. Robinson Williams. "The prognostic value of standardized reference values for speckle-tracking global longitudinal strain in hypertrophic cardiomyopathy." International Journal of Cardiovascular Imaging 31, no. 3 (January 14, 2015): 557–65. http://dx.doi.org/10.1007/s10554-015-0590-5.

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Yu, Yun Shui, Ben Gui Li, and Wei Hong Zhou. "Impact Strength Test and Numerical Fitting of Plybamboo Form." Advanced Materials Research 194-196 (February 2011): 1130–33. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.1130.

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longitudinal and transverse impact strength tests of plybamboo form with different moisture content were performed. Regression Equations of longitudinal and transverse impact strength of plybamboo form were constructed through numerical fitting. The results show that both longitudinal impact strength and transverse impact strength increase with the increasing of the moisture content of the plybamboo form. The average value of longitudinal impact strength increases or decreases 0.20kJ/m2 when the value of moisture content increases or decreases 1%. The average value of transverse impact strength increases or decreases 0.12kJ/m2 when the value of moisture content increases or decreases 1%. The results of variance analysis and significance test of the two linear regression equations show that both the regression equations achieve very significant level.

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Byles, Julie E., and Annette Dobson. "The value of time in longitudinal studies of ageing. Lessons from the Australian Longitudinal Study on Women's Health." Australasian Journal on Ageing 30 (October 2011): 6–12. http://dx.doi.org/10.1111/j.1741-6612.2011.00531.x.

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Legrand, L., C. Heuze, A. Diallo, M. L. Monin, C. Ewenczyk, E. Vicaut, G. Montalescot, R. Isnard, A. Durr, and F. Pousset. "Prognostic value of longitudinal strain and ejection fraction in Friedreich's ataxia." International Journal of Cardiology 330 (May 2021): 259–65. http://dx.doi.org/10.1016/j.ijcard.2021.02.032.

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Thomas, Christopher S., Raphael Parrado, Gregory T. Rives, Ivy Keller, Monea Akinjobi, and Cynthia L. Talley. "Surgical Residents Value a Longitudinal Leadership Curriculum Teaching Non-Technical Skills." Journal of the American College of Surgeons 235, no. 5 (October 17, 2022): S232. http://dx.doi.org/10.1097/01.xcs.0000894824.01795.92.

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Komissarova, S. M., E. Yu Zakharova, Т. V. Sevruk, I. B. Ustinova, and O. V. Krasko. "PREDICTIVE VALUE OF THE GLOBAL LONGITUDINAL STRAIN IN HYPERTROPHIC CARDIOMYOPATHY PATIENTS." Russian Journal of Cardiology, no. 2 (March 9, 2018): 7–12. http://dx.doi.org/10.15829/1560-4071-2018-2-7-12.

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Anderson, Ben. "The value of mixed-method longitudinal panel studies in ict research." Information, Communication & Society 8, no. 3 (September 2005): 343–67. http://dx.doi.org/10.1080/13691180500259160.

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Häring, Dieter A., Harald Kropshofer, Ludwig Kappos, Jeffrey A. Cohen, Anuja Shah, Rolf Meinert, David Leppert, Davorka Tomic, and Jens Kuhle. "Long-term prognostic value of longitudinal measurements of blood neurofilament levels." Neurology - Neuroimmunology Neuroinflammation 7, no. 5 (August 12, 2020): e856. http://dx.doi.org/10.1212/nxi.0000000000000856.

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ObjectiveTo assess the long-term prognostic value of an integral of longitudinal measurements of plasma neurofilament light chain levels (NfLlong) over 12 and 24 months vs single neurofilament light chain (NfL) measurements in patients with relapsing-remitting MS (RRMS) and its additional value when combined with clinical and MRI measures.MethodsThis analysis included continuously fingolimod-treated patients with RRMS from the 24-month FTY720 Research Evaluating Effects of Daily Oral therapy in Multiple Sclerosis (FREEDOMS)/12-month Trial Assessing Injectable Interferon vs FTY720 Oral in Relapsing–Remitting Multiple Sclerosis (TRANSFORMS) phase 3 trials and their long-term extension, LONGTERMS. Patients were classified into high (≥30 pg/mL, n = 110) and low (<30 pg/mL, n = 164) NfL categories based on the baseline (BL) NfL value or the geometric mean NfLlong calculated over 12 and 24 months to predict disability-related outcomes and brain volume loss (BVL). The additional prognostic value of NfL was quantified using the area under the receiver operating characteristic (ROC) curve.ResultsA single high (vs low) NfL measure at BL was prognostic of a higher risk of reaching Expanded Disability Status Scale (EDSS) score ≥4 earlier (hazard ratio [HR] = 2.19; 95% CI = 1.21–3.97) and higher BVL over 120 months (difference: −1.12%; 95% CI = −2.07 to −0.17). When NfLlong was measured over 24 months, high NfL was associated with a higher risk of reaching EDSS score ≥4 (HR = 7.91; 95% CI = 2.99–20.92), accelerated 6-month confirmed disability worsening (HR = 3.14; 95% CI = 1.38–7.11), and 20% worsening in the Timed 25-Foot Walk Test (HR = 3.05; 95% CI = 1.38–6.70). Area under the ROC curve was consistently highest in models combining NfL with clinical and MRI measures.ConclusionsNfLlong had a higher prognostic value than single NfL assessments on long-term outcomes in RRMS. Combining it with clinical and MRI measures increased sensitivity and specificity to predict long-term disease outcomes.Classification of evidenceThis study provides Class I evidence that NfLlong was more strongly associated with long-term outcomes than single NfL assessments in patients with RRMS.

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Hughey, Joseph B., Eric Sundstrom, and John W. Lounsbury. "Attitudes Toward Nuclear Power: A Longitudinal Analysis of Expectancy-Value Models." Basic and Applied Social Psychology 6, no. 1 (March 1985): 75–91. http://dx.doi.org/10.1207/s15324834basp0601_6.

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Walters, Lucie, David Prideaux, Paul Worley, and Jennene Greenhill. "Demonstrating the value of longitudinal integrated placements to general practice preceptors." Medical Education 45, no. 5 (April 12, 2011): 455–63. http://dx.doi.org/10.1111/j.1365-2923.2010.03901.x.

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Eggert, Andreas, Wolfgang Ulaga, and Franziska Schultz. "Value creation in the relationship life cycle: A quasi-longitudinal analysis." Industrial Marketing Management 35, no. 1 (January 2006): 20–27. http://dx.doi.org/10.1016/j.indmarman.2005.07.003.

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Guala, Andrea, Jose Rodríguez-Palomares, Aroa Ruiz-Muñoz, Minerva Gandara, Violeta Sanchez, Alberto Forteza, David Garcia-Dorado, Artur Evangelista, and Gisela Teixido-Tura. "1.4 PROGNOSTIC VALUE OF PROXIMAL AORTA LONGITUDINAL STRAIN IN MARFAN SYNDROME." Artery Research 24, no. C (2018): 68. http://dx.doi.org/10.1016/j.artres.2018.10.021.

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Lackey-Cornelison, Wendy, and Maria Sheakley. "The Value of Longitudinal Integrated TBLs and How to Create Them." Medical Science Educator 29, no. 4 (August 29, 2019): 1187–91. http://dx.doi.org/10.1007/s40670-019-00805-2.

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Zerbe, Gary O., Margaret C. Wu, and David M. Zucker. "Tudying the relationship between change and initial value in longitudinal studies." Statistics in Medicine 13, no. 5-7 (March 15, 1994): 759–68. http://dx.doi.org/10.1002/sim.4780130536.

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Janus, Scott E., Jamal Hajjari, Mohamad Karnib, Nour Tashtish, Sadeer G. Al-Kindi, and Brian D. Hoit. "Prognostic Value of Left Ventricular Global Longitudinal Strain in COVID-19." American Journal of Cardiology 131 (September 2020): 134–36. http://dx.doi.org/10.1016/j.amjcard.2020.06.053.

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Dimkovic, Nada, Georg Schlieper, Aleksandar Jankovic, Zivka Djuric, Marcus Ketteler, Tatjana Damjanovic, Petar Djuric, et al. "Prognostic value of cardiovascular calcifications in hemodialysis patients: a longitudinal study." International Urology and Nephrology 50, no. 5 (February 13, 2018): 939–46. http://dx.doi.org/10.1007/s11255-018-1821-1.

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Lee, Ga Yeon, Jin-Oh Choi, and Eun-Seok Jeon. "Prognostic Value of Electrocardiographic Parameters and Longitudinal Strain in Cardiac Amyloidosis." Journal of Cardiac Failure 23, no. 8 (August 2017): S47. http://dx.doi.org/10.1016/j.cardfail.2017.07.129.

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Tsujiuchi, Miki, Mio Ebato, Sakura Nagumo, Takuya Mizukami, Hideyuki Maezawa, and Hiroshi Suzuki. "Difference in Prognostic Value of Left Atrial Longitudinal and Circumferential Strain." Journal of Cardiac Failure 23, no. 10 (October 2017): S39. http://dx.doi.org/10.1016/j.cardfail.2017.08.179.

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Dodds, Sarah, Sandy Bulmer, and Andrew Murphy. "Incorporating visual methods in longitudinal transformative service research." Journal of Service Theory and Practice 28, no. 4 (July 9, 2018): 434–57. http://dx.doi.org/10.1108/jstp-02-2017-0022.

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Purpose Consumer experiences of healthcare services are challenging for researchers to study because of the complex, intangible and temporal nature of service provision. The purpose of this paper is to introduce a novel longitudinal three-phase research protocol, which combines iterative interviewing with visual techniques. This approach is utilised to study consumer service experiences, dimensions of consumer value and consumer value co-creation in a transformational service setting: complementary and alternative medicine healthcare. Design/methodology/approach This research employed a three-phase qualitative longitudinal research protocol, which incorporated: an initial in-depth interview, implementation of the visual elicitation technique Zaltman Metaphor Elicitation Technique and a final interview to gain participant feedback on the analysis of data collected in the first two phases. Findings Four key benefits derived from using the three-phase protocol are reported: confirmation and elaboration of consumer value themes, emergence of underreported themes, evidence of transformation and refinement of themes, ensuring dependability of data and subsequent theory development. Originality/value The study provides evidence that a longitudinal multi-method approach using in-depth interviews and visual methods is a powerful tool that service researchers should consider, particularly for transformative service research settings with sensitive contexts, such as healthcare, and when studying difficult to articulate concepts, such as consumer value and value co-creation.

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Voevodskii, Constantine E., and Vladimir M. Strepetov. "Longitudinal vibrations in electrodynamics suspension system." Transportation systems and technology 2, no. 1 (December 15, 2016): 52–64. http://dx.doi.org/10.17816/transsyst20162152-64.

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A system of electrodynamics suspension (EDS) in which the primary source of the field (electromagnet) is moving in a straight line parallel to the surface of the track and his speed makes small oscillations around a mean value is considered. The approximation of an infinitely wide track is allowed, the primary source of the electromagnetic field acts as a so-called periodic source. This problem is a special case of the general problem of the rate of the transients in the EDS, caused by uneven movement. Named speed determines the amount of time constants that make sense, and in contrast to the simplest case of a one-dimensional linear oscillator system EDS characterizes not by a single time constant, but by infinite set of values. The method of calculation of levitation and braking forces acting in this oscillatory motion on carriage electromagnet is worked out and simple explicit formulas to calculate these forces are got. On the basis of the calculation of time constants the rate of the transients in the EDS, caused by uneven movement is assessed. The calculations of levitation and braking forces according to the developed technique are made. The results obtained allow to delimit the applicability of the so-called quasi-static approach which consists in that the irregularly moving of electromagnet replaced by concurrent, i.e., the same electromagnet, similarly disposed and uniformly moving with a speed coinciding with the instantaneous value of the actual longitudinal speed of the electromagnet. In the quasi-static approximation, fluctuations of levitation and braking forces are in phase with oscillations of speed and amplitude of the forces oscillations do not depends on the frequency of the speed oscillation. The calculations show that in reality there is phase shift between the forces oscillations and speed oscillations depending on the frequency. Amplitudes of levitation and braking forces oscillations also depend on the oscillation frequency, and for each speed value a resonance frequency exists at which they reach the maximum value.

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Reid, Donald B., Myles Douglas, and Edward B. Diethrich. "The Clinical Value of Three-Dimensional Intravascular Ultrasound Imaging." Journal of Endovascular Therapy 2, no. 4 (November 1995): 356–64. http://dx.doi.org/10.1177/152660289500200408.

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Two-dimensional (2D) intravascular ultrasound (IVUS) imaging can now be reconstructed into three dimensions from serial 2D images captured following a “pullback” of the IVUS catheter through the target site. Three-dimensional (3D) reconstructions provide “longitudinal” and “volume” images. The former is similar to an angiogram and can be examined in three dimensions by rotating the image around its longitudinal axis, providing clinically useful information during endovascular procedures. The volume view takes longer to create and is not an exact reconstruction, but it provides images that can be rotated into any spatial position. It visualizes the luminal aspect of the vessel particularly well. The clinical value of 3D IVUS is in the diagnosis of vascular disease and the assessment of endovascular interventions. Three-dimensional IVUS, which provides better, more informative images than 2D IVUS, can be particularly useful intraprocedurally in detecting inaccurate deployment of intravascular stents and endoluminal grafts.

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Revuzhenko, Alexander F., Anton A. Kazantsev, Yuri F. Glazkov, and Andrey A. Dortman. "Influence of the Longitudinal Excavations Layout on Stress Concentration Value in the Peripheral Rock Mass." Applied Mechanics and Materials 682 (October 2014): 196–201. http://dx.doi.org/10.4028/www.scientific.net/amm.682.196.

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The article proposes an analysis of the various longitudinal excavations layouts in tunnel walls. The excavations are required for taking reaction forces when a ‘geokhod’ works. A computational model of the peripheral rock mass is presented. Calculations showed that the X-type layout of the longitudinal excavations is most acceptable for the given initial conditions.

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Li, Chun Guang, Zhong Chen Dai, Zhong Huang Yun, Dong Feng Li, and Xing Hua Cao. "The Use of Renka Cline Algorithm in X-Ray Diffraction Residual Stress Measurement." Advanced Materials Research 881-883 (January 2014): 1846–50. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.1846.

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Using the Renka Cline algorithm provided by OriginPro8.6 to fit the longitudinal residual stress through parts of the measurement value on the A7N01-T5 aluminum alloy butt welded joints compared with the whole measurement value. The result shows that the fitting value approximates the measurement value. The fitting value is reliable. So, Renka Cline algorithm is a reliable method to analyze the longitudinal residual stress on a plate region.

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Höpner, Aline, Stefânia Ordovás de Almeida, and Vinícius Sittoni Brasil. "The Rock in Rio extraordinary consumer experience journey: a value-based approach." International Journal of Event and Festival Management 13, no. 1 (December 3, 2021): 92–106. http://dx.doi.org/10.1108/ijefm-05-2021-0041.

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PurposeThis study aims to propose a framework for understanding the construction of extraordinary consumer experiences in events from a multidimensional and longitudinal value perspective.Design/methodology/approachThe main research site was the Rock in Rio Brazil VI festival, an extraordinary consumption experience. The study takes a phenomenological interpretative approach, for which input was obtained using multiple data collection techniques (in-depth interviews, diaries and photographs) in a longitudinal study that took place over 18 months. The study also includes the first author’s observations and interactions with the event organizer and its partners during the same period, and post-pandemic complementary data that were collected in 2021.FindingsThe research findings demonstrate the integrative potential of concepts and theories that are analysed in the light of a longitudinal perspective for understanding value formation for consumers in their experience of extraordinary events. It also indicates that the construction of experience involves a high level of interaction and a high degree of engagement with the consumer in order to foster the development of an affective relationship between the service provider and the user that is based on a co-created experience.Originality/valueThe study answers call for more research into understanding consumer value, and how it is created, delivered and developed over time (Helkkula et al., 2012). It also expands our understanding of consumption experiences and the consumer journey (Lemon and Verhoef, 2016). It encourages longitudinal qualitative studies to be carried out and analyses value in the consumption experience in the field of events.

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Kamb, Barclay. "Stress-Gradient Coupling in Glacier Flow:III. Exact Longitudinal Equilibrium Equation." Journal of Glaciology 32, no. 112 (1986): 335–41. http://dx.doi.org/10.1017/s0022143000012004.

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AbstractThe “vertically” integrated, exact longitudinal stress-equilibrium equation of Budd (1970) is developed further in such a way as to yield an equation that gives explicitly and exactly the contributions to the basal shear stress made by surface and bed slope, surface curvature, longitudinal stress deviators, and longitudinal stress gradients in a glacier flowing in plane strain over a bed of longitudinally varying slope. With this exact equation, questions raised by various approximate forms of the longitudinal equilibrium equation can be answered decisively, and the magnitude of errors in the approximations can be estimated. To first order, in the angle δ that describes fluctuations in the surface slope α from its mean value, the exact equilibrium equation reduces towhereGandTare the well-known stress-deviator-gradient and “variational stress” terms,Kis a “longitudinal curvature” term, andBis a “basal drag” term that contributes a resistance to sliding across basal hills and valleys. Except forT, these terms are expressed in simple form and evaluated for practical situations. The bed slope θ (relative to the mean slope) is not assumed to be small, which allows the effects of bedrock topography to be determined, particularly through their appearance in theBterm.

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McCaffrey, Daniel F., J. R. Lockwood, Daniel Koretz, Thomas A. Louis, and Laura Hamilton. "Models for Value-Added Modeling of Teacher Effects." Journal of Educational and Behavioral Statistics 29, no. 1 (March 2004): 67–101. http://dx.doi.org/10.3102/10769986029001067.

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The use of complex value-added models that attempt to isolate the contributions of teachers or schools to student development is increasing. Several variations on these models are being applied in the research literature, and policy makers have expressed interest in using these models for evaluating teachers and schools. In this article, we present a general multivariate, longitudinal mixed-model that incorporates the complex grouping structures inherent to longitudinal student data linked to teachers. We summarize the principal existing modeling approaches, show how these approaches are special cases of the proposed model, and discuss possible extensions to model more complex data structures. We present simulation and analytical results that clarify the interplay between estimated teacher effects and repeated outcomes on students over time. We also explore the potential impact of model misspecifications, including missing student covariates and assumptions about the accumulation of teacher effects over time, on key inferences made from the models. We conclude that mixed models that account for student correlation over time are reasonably robust to such misspecifications when all the schools in the sample serve similar student populations. However, student characteristics are likely to confound estimated teacher effects when schools serve distinctly different populations.

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Zheng, Hai-Ning, Wei Wang, MD Wang, Xiao-Qing Wang, MD Wang, Wen-Jing Song, Wen-Jing Song, Rui Zhao, Meng Li, and Chao-Yang Wen, MD Wen. "Value Of Anteroposterior-To-Transverse Ratio in Ultrasonic Diagnosis of Thyroid Nodule in Different Locations." Clinical and Investigative Medicine 45, no. 4 (December 31, 2022): E25–32. http://dx.doi.org/10.25011/cim.v45i4.38877.

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Purpose: To investigate the value of anteroposterior-to-transverse ratio (ATR) and the effect on features of nodules in ultrasound (US) diagnosis of thyroid nodules in different locations. Methods: The nodules were divided into three groups according to the different nodule location: isthmus group; upper and lower poles of bilobed thyroid group; and the middle of the bilobed thyroid group. The diameters of the nodules were recorded, and ATR of the nodule was calculated on the transverse and longitudinal sections. The transverse and the longitudinal sections of ATR of thyroid nodules in different groups were compared. Result: The transverse section of ATR was significantly different among the three groups (p = 0.001). In addition, there are significant differences in many US features among three groups, including nodule composition, thyroid parenchyma, morphology, echogenicity, shape, calcifications, vascularity, nodule ACR TI-RADS and histopathologic (all p < 0.05). In the group of upper and lower poles of bilobed thyroid, significant difference was found between the transverse and the longitudinal section of ATR (p = 0.019). The cut-off values of transverse section and longitudinal section of ATR were 0.967 and 0.750, respectively. Conclusion: The transverse section of ATR at different location of thyroid may be a predictor for malignancy with clinical diagnostic significance.

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Kondrashov, V. N., V. V. Voronin, and K. E. Karpukhin. "Relation between Tire Rate Value and Vehicle Operation Performance." Izvestiya MGTU MAMI 3, no. 1 (January 10, 2009): 37–40. http://dx.doi.org/10.17816/2074-0530-69874.

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The paper deals with the analysis of characteristics of rigidity of the tyre, such as: normal rigidity; lateral rigidity; longitudinal rigidity; angular rigidity; torsional rigidity. Influences of the above-stated characteristics on operational performance of vehicles are considered. The authors give recommendations of designing of new tyres taking into account their subsequent application on modern cars.

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Ma, Shenglin, Meiqi Shi, Xueqin Chen, Yong Wang, Zhenhua Yang, Analyn Lizaso, Min Li, et al. "The prognostic value of longitudinal circulating tumor DNA profiling during osimertinib treatment." Translational Lung Cancer Research 10, no. 1 (January 2021): 326–39. http://dx.doi.org/10.21037/tlcr-20-371.

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Dell'Era, Claudio, Giulio Ferrigno, Federico Frattini, Roberto Verganti, and Paolo Landoni. "Value capture in open innovation systems: a longitudinal analysis of radical circles." Academy of Management Proceedings 2019, no. 1 (August 1, 2019): 12830. http://dx.doi.org/10.5465/ambpp.2019.12830abstract.

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Ritala, Paavo, Leena Aarikka-Stenroos, and Devi R. Gnyawali. "Co-Evolution of Ecosystem Value Proposition Across Institutional Fields: Longitudinal Case Study." Academy of Management Proceedings 2020, no. 1 (August 2020): 20814. http://dx.doi.org/10.5465/ambpp.2020.145.

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Matana, Ante, Teodora Zaninović Jurjević, and Slavica Kovačić. "Prognostic value of left ventricular longitudinal strain in patients with aortic stenosis." Cardiologia Croatica 14, no. 3-4 (April 2019): 104. http://dx.doi.org/10.15836/ccar2019.104.

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Marchenko, Oksana Yu. "DIAGNOSTIC VALUE OF GLOBAL LONGITUDINAL STRAIN IN PATIENTS WITH CORONARY ARTERY DISEASE." Wiadomości Lekarskie 74, no. 10 (2021): 2588–92. http://dx.doi.org/10.36740/wlek202110211.

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The aim: To investigate the global longitudinal strain (GLS) in patients with preserved left ventricle systolic function and the presence of varying degrees of coronary artery disease. Materials and methods: The study is based on data obtained during a prospective analysis of 131 patients aged 51 to 82 years in the period from January to December 2019,whose complaints indicate coronary heart disease. The main instrumental method of examination was coronary angiography, patients were divided into 3 groups according to the results. The control group (group I) consisted of 30 patients in whom no coronary artery disease was detected; patients with single vessel lesions or non-stenotic coronary atherosclerosis were included into group II (n = 35) and patients with multivessels lesions (n = 66) were included in group III. For each patient, the extent of the lesion was assessed using the SYNTAX Score. The groups were comparable in age, sex and comorbidities. Results : GLS was -19.71 ± 2.22 (SI -18.88 to -20.54%) in the group without coronary lesions, the group with multivessel lesions was the lowest -14.34 ± 3.47 (SI -13.49 to -15.2%). There was a significant correlation between GLS average and LV EF (r = 0.681; p <0.0001), LV ESV (r = -0.576; p <0.0001), EPSS (r = -0.528; p <0.0001). A moderate correlation was observed GLS, linear and volumetric parameters. Conclusions: Global longitudinal strain is recommended for echocardiographic assessment of patients with coronary artery disease, as one of the main areas of application of this technique because its use provides additional information and maybe used in the same patient to assess the treatment.

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Journal articles on the topic 'Longitudinal Value'

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