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Relevant bibliographies by topics / Weight formulas

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Academic literature on the topic 'Weight formulas'

Author: Grafiati

Published: 6 September 2023

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Journal articles on the topic "Weight formulas"

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Seddon, Colette, Laurell Lockitt, Sacha Dhanjal, and Michael Eisenhut. "Validation of Advanced Paediatric Life Support Formulas for Weight Calculation in a Multiethnic Population." ISRN Pediatrics 2012 (September 25, 2012): 1–4. http://dx.doi.org/10.5402/2012/869634.

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Introduction. The aims of this study were to validate the new formulas for weight calculation introduced by the advanced life support group (alsg) of the United Kingdom in 2011 and compare their performance to the formula currently used by the European Resuscitation Council (ERC) and other formulas and to check whether performance of formulas for weight calculation is affected by ethnic group and gender. Methods. Prospective audit of weight versus calculated weight comparing alsg formula with ERC, Luscombe, Argall, and Best Guess formulas analysed for gender, age, and ethnic groups. Results. Prospectively 599 children were included: 157 Asian, 268 Caucasian, and 174 children from other origin. In infants there was no difference between actual weight and alsg formula calculated weight. There was a progressively increased underestimation of weight year by year from 1 to 10 years of age using the ERC formula. In the 6–10 year age group the ERC formula underestimated the weight by a mean of 6.5 kg (21.8%, ) with the alsg and Luscombe formulas performing best. In 11-12 year old children the alsg formula estimated well. Conclusion. In one- to ten-year-old children, the Luscombe formula provided a better weight estimate than alsg and ERC formulas in a multiethnic population.

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Ramaiah, Dr Pushpamala, Dr Lamiaa Ahmed Elsayed, and Dr Grace Lindsey Dr Ayman Johargy. "Estimation of Fetal Size and Weight using Various Formulas." International Journal of Trend in Scientific Research and Development Volume-3, Issue-3 (April 30, 2019): 991–94. http://dx.doi.org/10.31142/ijtsrd23231.

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Hatziafratis, Telemachos. "Integral formulas with weight factors." Journal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics 52, no. 1 (February 1992): 26–39. http://dx.doi.org/10.1017/s1446788700032845.

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Polovinkin, V. I. "Asymptotically optimal cubature weight formulas." Siberian Mathematical Journal 30, no. 2 (1989): 289–97. http://dx.doi.org/10.1007/bf00971385.

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Essari, Abdulhakim Muhammad. "ESTIMATION OF WING WEIGHT IN CONCEPTUAL DESIGN PHASE FOR TACTICAL UNMANNED AERIAL VEHICLS." مجلة الجامعة الأسمرية: العلوم التطبيقية 3, no. 1 (June 30, 2018): 53–68. http://dx.doi.org/10.59743/aujas.v3i1.1613.

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New formula for wing weight estimation, in conceptual design phase is derived for a tactical unmanned aerial vehicle (TUAV). Formula is derived by analyzing existing UAVs of the weighs from 100 to 500 kg, and which have similar characteristics. The materials suggested for UAV weight design are aluminum alloys and aluminum based composite materials. Software tools are developed in Matlab to facilitate takeoff and component weight calculations. The least square method is applied to analyze statistical data in order to develop trend functions which correlate TUAVs empty weight and takeoff weight. Existing formulas, developed for general aviation, for wing and takeoff weight estimations are applied to TUAV and promising one are selected and adjusted to TUAV conceptual design phase. Wing weight is related to geometrical parameters, maximum speed, and takeoff weight of the TUAVs. All existing and newly developed formulas are applied to typical TUAV example to validate it applicability.

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Weiss, Christoph, Sabine Enengl, Simon Hermann Enzelsberger, Richard Bernhard Mayer, and Peter Oppelt. "Does the Porter formula hold its promise? A weight estimation formula for macrosomic fetuses put to the test." Archives of Gynecology and Obstetrics 301, no. 1 (December 27, 2019): 129–35. http://dx.doi.org/10.1007/s00404-019-05410-7.

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Abstract Purpose Estimating fetal weight using ultrasound measurements is an essential task in obstetrics departments. Most of the commonly used weight estimation formulas underestimate fetal weight when the actual birthweight exceeds 4000 g. Porter et al. published a specially designed formula in an attempt to improve detection rates for such macrosomic infants. In this study, we question the usefulness of the Porter formula in clinical practice and draw attention to some critical issues concerning the derivation of specialized formulas of this type. Methods A retrospective cohort study was carried out, including 4654 singleton pregnancies with a birthweight ≥ 3500 g, with ultrasound examinations performed within 14 days before delivery. Fetal weight estimations derived using the Porter and Hadlock formulas were compared. Results Of the macrosomic infants, 27.08% were identified by the Hadlock formula, with a false-positive rate of 4.60%. All macrosomic fetuses were detected using the Porter formula, with a false-positive rate of 100%; 99.96% of all weight estimations using the Porter formula fell within a range of 4300 g ± 10%. The Porter formula only provides macrosomic estimates. Conclusions The Porter formula does not succeed in distinguishing macrosomic from normal-weight fetuses. High-risk fetuses with a birthweight ≥ 4500 g in particular are not detected more precisely than with the Hadlock formula. For these reasons, we believe that the Porter formula should not be used in clinical practice. Newly derived weight estimation formulas for macrosomic fetuses must not be based solely on a macrosomic data set.

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MUTAVDŽIĆ, RADA M. "Generalized Averaged Gaussian Formulas for Certain Weight Functions." Kragujevac Journal of Mathematics 46, no. 2 (2022): 295–305. http://dx.doi.org/10.46793/kgjmat2202.295m.

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In this paper we analyze the generalized averaged Gaussian quadrature formulas and the simplest truncated variant for one of them for some weight functions on the interval [0, 1] considered by Milovanović in [10]. We shall investigate internality of these formulas for the equivalents of the Jacobi polynomials on this interval and, in some special cases, show the existence of the Gauss-Kronrod quadrature formula. We also include some examples showing the corresponding error estimates for some non-classical orthogonal polynomials.

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Geer, Gerard Van Der, Rene Schoof, and Marcel Van Der Vlugt. "Weight Formulas for Ternary Melas Codes." Mathematics of Computation 58, no. 198 (April 1992): 781. http://dx.doi.org/10.2307/2153217.

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van der Geer, Gerard, Ren{é Schoof, and Marcel van der Vlugt. "Weight formulas for ternary Melas codes." Mathematics of Computation 58, no. 198 (May 1, 1992): 781. http://dx.doi.org/10.1090/s0025-5718-1992-1122080-4.

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Nikdelan, Younes, and Hossein Movasati. "Product formulas for weight two newforms." Cadernos do IME - Série Matemática, no. 14 (July 1, 2020): 1–7. http://dx.doi.org/10.12957/cadmat.2020.48389.

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Dissertations / Theses on the topic "Weight formulas"

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Tang, Mei-po. "Weight gain and methods of feeding a retrospective cohort study of the Hong Kong Chinese infants /." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B31972214.

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Tang, Mei-po, and 鄧美寶. "Weight gain and methods of feeding: a retrospective cohort study of the Hong Kong Chinese infants." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31972214.

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Ratiborský, Pavel. "Konstrukční návrh trubkového rámu Formule Student." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231389.

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This thesis deals with the design of the tubular frame for the Formula Student car competition. The first part is a brief introduction to the competition and used variants of frames. The main part starts with a list of restrictions by the rules and other necessary installation components. The central part is devoted to the draft modifications and their assessment in terms of torsional stiffness by FEM analysis. The final section presents the resulting frame design with respect to the required properties. The work is concluded final evaluation.

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Moshiri, Maryam. "Truck Size and Weight Analysis for the Development of a European Bridge Formula." PIARC World Road Congress, 2011. http://hdl.handle.net/1993/9148.

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The research analyzes the bridge load stress effects resulting from international bridge formulae and truck size and weight regulations in Europe. This is done with a view to identifying issues that may need to be considered in the development of a European Bridge Formula (EUBF) conforming to European Directive truck configurations for the regulation of truck size and weight limits associated with international travel between European Union (EU) member states. The level of efficiency of bridge formulae vary depending on the design criteria used in the development of the formula, the compatibility to the jurisdiction’s infrastructure and truck fleet characteristics, and the method of implementation as part of the regulation and by operators in the trucking industry. The EUBF should limit imposed critical bending moment and shear stresses on single and continuous span bridges of varying lengths (5, 20, and 50 metres) in accordance to design live loads specified in the Eurocode. The analysis of bridge load effects imposed by European Directive truck configurations in this research, provide the basis for the development of a EUBF.

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Li, Huajie. "Contributions to the relative trace formula of Guo-Jacquet." Thesis, Université de Paris (2019-....), 2020. http://www.theses.fr/2020UNIP7080.

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On établit des formules des traces globale et locale pour les espaces symétriques infinitésimaux de Jacquet-Guo. On prouve également quelques résultats locaux concernant la comparaison de termes semi-simples réguliers qui sont des intégrales orbitales pondérées non invariantes. Cette thèse contient cinq chapitres. Dans le chapitre 1, on rappelle les motivations et énonce nos principaux résultats. Notre travail s'inspire d'une conjecture de Jacquet-Guo, qui est un exemple dans le programme de Langlands relatif, et des problèmes analytiques apparaissant dans l'approche par la formule des traces relative. Dans le chapitre 2, on établit une variante infinitésimale de la formule des traces de Jacquet-Guo pour le cas de (GL (2n, D), GL (n, D) ⨉GL (n, D)). Elle est une sorte de formule sommatoire de Poisson obtenue par un analogue de la troncature d'Arthur. On décrit les termes semi-simples réguliers comme des intégrales orbitales pondérées explicites. Dans le chapitre 3, on établit une formule similaire et a une description similaire des termes semi-simples réguliers pour le cas d'une algèbre centrale simple contenant une extension quadratique. De plus, on énonce et prouve le lemme fondamental pondéré grâce aux travaux de Labesse sur le changement de base pour GL(n). Dans le chapitre 4, on établit une formule des traces locale invariante infinitésimale de Jacquet-Guo sur un corps p-adique en suivant les travaux de Waldspurger et Arthur. Au cours de la démonstration, on obtient également une formule des traces locale non invariante infinitésimale, la finitude de Howe pour les intégrales orbitales pondérées et la représentabilité de la transformée de Fourier des intégrales orbitales pondérées. Dans le chapitre 5, avec les résultats des chapitres précédents, on adopte la stratégie de Waldspurger sur le transfert endoscopique pour prouver certaines relations entre transformées de Fourier des intégrales orbitales pondérées locales invariantes
We establish global and local trace formulae for infinitesimal symmetric spaces of Guo-Jacquet. We also prove several local results concerning the comparison of regular semi-simple terms which are noninvariant weighted orbital integrals. This thesis contains five chapters. In Chapter 1, we recall the motivations and state our main reults. Our work is inspired by a conjecture of Guo-Jacquet, which is an example in the relative Langlands programme, and analytic problems appearing in the relative trace formula approach. In Chapter 2, we establish an infinitesimal variant of Guo-Jacquet trace formula for the case of (GL (2n, D), GL (n, D) ⨉GL (n, D)). It is a kind of Poisson summation formula obtained by an analogue of Arthur’s truncation. We describe regular semi-simple terms as explicit weighted orbital integrals. In Chapter 3, we estabilish a similar formula and have a similar description of regular semi-simple terms for the case of a central simple algebra containing a quadratic extension. Moreover, we state and prove the weighted fundamental lemma thanks to Labesse’s work on the base change for GL(n). In Chapter 4, we establish an infinitesimal invariant local trace formula of Guo-Jacquet over a p-adic field by following works of Waldspurger and Arthur. During the proof, we also obtain an infinitesimal noninvariant local trace formula, Howe’s finiteness for weighted orbital integrals and the representability of the Fourier transform of weighted orbital integrals. In Chapter 5, with the results in previous chapters, we adopt Waldspurger’s strategy on the endoscopic transfer to prove some relations between Fourier transforms of invariant local weighted orbital integrals

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Contractor, Yateesh Jaykishan. "Evaluation of a new bridge formula for regulation of truck weights." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2551.

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The current bridge formula, Federal Bridge Formula B (BFB), established in 1974 to protect bridges against excessive overstress, is very restrictive on long combination vehicles due to an 80,000 lb gross vehicle weight limit. Without this limit the formula will not be able to protect bridges in the cases of longer trucks. A formula developed by the Texas Transportation Institute (T.T.I.) called the TTI-HS20 Formula addresses these issues. This formula, developed especially for bridges designed for the HS-20 truck, eliminates the need for the 80,000 lb limit. A generic formula developed to protect H15 and HS-20 bridges (James et al., 1986) was evaluated in a previous study (James and Zhang, 1991). The approach to evaluating the TTI-HS20 Formula follows the approach outlined in James and Zhang, 1991. Information was collected on two important elements: a set of test bridges representative of the lightest continuous bridges, and a set of test truck configurations representative of real truck traffic with a focus on long combination vehicles. Critical weights of the selected trucks for the representative bridges are calculated and plotted against the TTI-HS 20 formula and other proposed formulas. A final recommendation as to whether this formula should be adopted nationwide is made.

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KUNIBA, ATSUO, and TOMOKI NAKANISHI. "Bethe Equation at q=0, Moebius Inversion Formula, and Weight Multiplicities: II. X_n case." Elsevier Science B.V, 2002. http://hdl.handle.net/2237/10056.

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Kuniba, Atsuo, and Tomoki Nakanishi. "Bethe Equation at q=0, Möbius Inversion Formula, and Weight Multiplicities: I. sl(2) case." Springer Verlag, 2000. http://hdl.handle.net/2237/10057.

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Zýková, Petra. "Scoring rules -- pokročilé hlasovací systémy s pořadím kandidátů." Master's thesis, Vysoká škola ekonomická v Praze, 2017. http://www.nusl.cz/ntk/nusl-359345.

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This thesis deals with ranked advanced voting systems. The aim is to determine the overall winner and the ranking of candidates based on voters' preferences. The thesis utilises basic voting systems - plurality rules, lexicographical and Borda's method - as well as advanced voting systems with the application of DEA models, specifically DEA/AR model, DEA/AR exclusion model (including variations with penalties), and Llamazares-Peňa model. Compromise programming is used to obtain common vector of weights. The models and their use are demonstrated on Formula One Grand Prix results from season 2016. Formula One World Drivers' Championship and Formula One World Constructors' Championship are being investigated.

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Ueda, Masaru. "The decomposition of the spaces of cusp forms of half-integral weight and trace formula of Hecke operators." 京都大学 (Kyoto University), 1987. http://hdl.handle.net/2433/86379.

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Books on the topic "Weight formulas"

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Eat fit, be fit: Health and weight management solutions. Clifton Park, NY: Thomson Delmar Learning, 2007.

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Isoldi, Kathy Keenan. Woman's day weight-loss plan: Lose weight, eat right, be fit, and feel great at every stage of life! New York, NY: Filipacchi Publishing, 2003.

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Woman's day weight-loss plan: Lose weight eat right be fit and feel great at every stage of life! New York, NY: Filipacchi Pub., 2003.

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United States. Federal Highway Administration. Office of Freight Management and Operations., ed. Bridge formula weights. [Washington, DC]: U.S. Dept. of Transportation, Federal Highway Administration, Office of Freight Management and Operations, 2006.

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Zinczenko, David. The abs diet: The six-week plan to flatten your stomach and keep you lean for life. Prince Frederick, MD: RB Large Print, 2005.

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Ted, Spiker, ed. The abs diet: Eat right every time guide. [Emmaus, Pa.]: Rodale, 2005.

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Hawkins, J. Barrett. Penitentiary fitness: The amazing wieght loss formula. Oceanside, California]: Dark Planet Publishing, 2010.

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Daoust, Gene. The formula: A personalized 40-30-30 weight loss program. New York: Ballantine Books, 2001.

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Cent, 50. Formula 50: A 6-week workout and nutrition plan that will transform your life. New York: Avery, 2013.

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Weight Wisdom. London: Taylor & Francis Inc, 2003.

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Book chapters on the topic "Weight formulas"

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Walton, Mark A. "Demazure Formulas for Weight Polytopes." In Quantum Theory and Symmetries, 287–94. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-55777-5_27.

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Liu, Guohua. "Level Mapping Induced Loop Formulas for Weight Constraint and Aggregate Programs." In Logic Programming and Nonmonotonic Reasoning, 444–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04238-6_40.

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Gooch, Jan W. "Formula Weight." In Encyclopedic Dictionary of Polymers, 323. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_5248.

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Gooch, Jan W. "Formula Weight." In Encyclopedic Dictionary of Polymers, 323. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_5249.

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Kobayashi, Naoki, and Minchao Wu. "Neural Network-Guided Synthesis of Recursive List Functions." In Tools and Algorithms for the Construction and Analysis of Systems, 227–45. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30823-9_12.

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AbstractKobayashi et al. have recently proposed NeuGuS, a framework of neural-network-guided synthesis of logical formulas or simple program fragments, where a neural network is first trained based on data, and then a logical formula over integers is constructed by using the weights and biases of the trained network as hints. The previous method was, however, restricted the class of formulas of quantifier-free linear integer arithmetic. In this paper, we propose a NeuGuS method for the synthesis of recursive predicates over lists definable by using the left fold function. To this end, we design and train a special-purpose recurrent neural network (RNN), and use the weights of the trained RNN to synthesize a recursive predicate. We have implemented the proposed method and conducted preliminary experiments to confirm the effectiveness of the method.

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Wang, Xueli, and Dingyi Pei. "Trace Formula." In Modular Forms with Integral and Half-Integral Weights, 321–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29302-3_9.

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Sahakyan, Avetik V., and Harutyun A. Amirjanyan. "Quadrature Formulas for Integrals with a Weak Singularity in the Kernel and a Weight Function of Jacobi Polynomials with Complex Exponents." In Solid Mechanics, Theory of Elasticity and Creep, 285–98. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-18564-9_21.

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Balke, Friedrich. "Ausfüllen/Überfüllen. Wie Ernst von Salomon den ›großen Fragebogen‹ beantwortet." In AdminiStudies. Formen und Medien der Verwaltung, 125–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-64084-5_8.

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ZusammenfassungFormulare sind Grenzobjekte. Eine besondere Bedeutung kommt in ihrem Fall der Unterscheidung von (vorgeschriebenem) Text, den auszufüllenden Lücken und ihren Rändern zu. Der lückenhafte Text weist demjenigen, der das Formular ausfüllt, einen präzise ausgemessenen Raum für seine Textergänzungen zu. Aber Formulare gestatten noch einen anderen Typ von Textergänzung, dessen Schauplatz die Ränder sind: Auf ihnen finden sich gelegentlich Inskriptionen, die in den vorgegebenen Lücken, die das Formular lässt, nicht vorgesehen sind und die sich zugleich als Kritik an den Klassifizierungszwängen dieser Textsorte lesen lassen. Vor diesem Hintergrund geht der Aufsatz den literarischen Spielräumen einer Textgattung nach, der es scheinbar allein auf bürokratische Genauigkeit ankommt: Ernst von Salomon orientiert in seinem umstrittenen Nachkriegs-Bestseller „Der Fragebogen“ (1951) seine Lebensgeschichte am Raster des sogenannten „großen Fragebogens“, mit dem das „Military Government of Germany“ das Kriegsziel der Entnazifizierung der deutschen Bevölkerung auf bürokratischem Wege erreichen wollte. Indem er sich weigert, seine Geschichte in die Kategorien der Verwaltung zu transformieren und sie stattdessen in allen anekdotischen Details ausfabuliert, benutzt von Salomon die Möglichkeiten der Literatur, um die Asymmetrie zwischen fragender Behörde und Auskunftsgebenden zu verkehren.

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Mavronicolas, Marios, Burkhard Monien, and Klaus W. Wagner. "Weighted Boolean Formula Games." In Algorithms, Probability, Networks, and Games, 49–86. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24024-4_6.

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Gooch, Jan W. "Gram Mole, Gram Formula Weight, Gram Equivalent." In Encyclopedic Dictionary of Polymers, 347. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_5608.

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Conference papers on the topic "Weight formulas"

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Shadimetov, Kholmat, and Bahtiyor Daliyev. "Composite optimal formulas for approximate integration of weight integrals." In INTERNATIONAL UZBEKISTAN-MALAYSIA CONFERENCE ON “COMPUTATIONAL MODELS AND TECHNOLOGIES (CMT2020)”: CMT2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0056966.

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Jalolov, Ozodjon. "Weight optimal order of convergence cubature formulas in Sobolev space." In INTERNATIONAL UZBEKISTAN-MALAYSIA CONFERENCE ON “COMPUTATIONAL MODELS AND TECHNOLOGIES (CMT2020)”: CMT2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0057015.

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Merrell, David, Aws Albarghouthi, and Loris D'Antoni. "Weighted Model Integration with Orthogonal Transformations." In Twenty-Sixth International Joint Conference on Artificial Intelligence. California: International Joint Conferences on Artificial Intelligence Organization, 2017. http://dx.doi.org/10.24963/ijcai.2017/643.

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Weighted model counting and integration (WMC/WMI) are natural problems to which we can reduce many probabilistic inference tasks, e.g., in Bayesian networks, Markov networks, and probabilistic programs. Typically, we are given a first-order formula, where each satisfying assignment is associated with a weight---e.g., a probability of occurrence---and our goal is to compute the total weight of the formula. In this paper, we target exact inference techniques for WMI that leverage the power of satisfiability modulo theories (SMT) solvers to decompose a first-order formula in linear real arithmetic into a set of hyperrectangular regions whose weight is easy to compute. We demonstrate the challenges of hyperrectangular decomposition and present a novel technique that utilizes orthogonal transformations to transform formulas in order to enable efficient inference. Our evaluation demonstrates our technique's ability to improve the time required to achieve exact probability bounds.

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Hayotov, Abdullo, and Bakhromjon Bozarov. "Optimal quadrature formulas with the trigonometric weight in the Sobolev space." In INTERNATIONAL UZBEKISTAN-MALAYSIA CONFERENCE ON “COMPUTATIONAL MODELS AND TECHNOLOGIES (CMT2020)”: CMT2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0056954.

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Sarhan, Qusay Idrees. "Enhancing spectrum based fault localization via emphasizing its formulas with importance weight." In ICSE '22: 44th International Conference on Software Engineering. New York, NY, USA: ACM, 2022. http://dx.doi.org/10.1145/3524459.3527349.

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Handi, Wei, Xiao Longfei, Li Xin, and Kou Yufeng. "Empirical Truncation Design of Deepwater Mooring System Using Supervised Learning Method." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77718.

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Truncated mooring system is the foundation of hybrid model test of deepwater floating platform with spread mooring system. This paper presents supervised learning method using linear regression model as the learner to generate empirical formulas which can determine the properties of truncated mooring system given the properties of full-depth mooring system. Thousands of completed truncation tasks are used to train the leaner, and then empirical formulas determining the length, axial stiffness and wet weight of the truncated system are established. The formulas are tested using a set of new truncation tasks. The results indicate that the truncated mooring system can be properly predicted by simply using the formulas.

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Gui, Lele, Tong Xu, Binan Shou, and Haiyang Yu. "Estimation of Q345R Fracture Toughness Based on Master Curve." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65484.

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1T CT specimens are used to evaluate the fracture toughness of Chinese Q345R steel in the ductile-brittle transition regime by Master Curve method. Tensile tests, Charpy impact tests and drop-weight tests of Q345R steel are also carried out to get the ductile-brittleness transition temperature and nil-ductility transition temperature. Master Curves are compared with the empirical formulas adopted in ASME, API and BS codes. Results show that the reference temperature T0 values derived from single-temperature and multi-temperature method by 1T specimen are basically consistent. Master Curve can well envelop the fracture toughness and temperature curves derived from the empirical formulas, and is more economic and flexible than the K1C curve with sufficient conservation.

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S. I., Umarkhonov, and Normatov Sh. I. "ON STRESS STATE OF EARTH DAMS UNDER THE ACTION OF THEIR OWN WEIGHT." In Mechanical Science and Technology Update. Omsk State Technical University, 2022. http://dx.doi.org/10.25206/978-5-8149-3453-6-2022-235-244.

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The paper is devoted to static problems of studying the stress state of earth dams, taking into account their own weight. A method of static problems is developed to determine the stress-strain state of earth dams. An algorithm for solving problems and calculation formulas based on the finite difference method were developed. The advantage of the developed method is the implementation of complex strain models considering structural changes in soil media. The problems of the stress state of the earth massif and the earth dam are solved by two methods, using the finite difference method and the Plaxis program based on the finite element method. The distribution of the stress state over the earth massif and over the cross section of the dam under the action of its own weight is determined using the example of the Charvak dam. The results obtained by the finite difference method and by the Plaxis program based on the finite element method are compared.

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Sharifi, Mojtaba, M. R. Hematiyan, and Roshanak Banan. "A New Analytical Solution for Optimum Design of Shrink-Fit Multi-Layer Compound Cylinders." In ASME 2012 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/pvp2012-78120.

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In this paper, by using an analytical optimization method, formulas for general optimum design of multi-layer compound cylinders are presented. For this purpose, considering the Tresca’s yield criterion, the maximum shear stresses occurred simultaneously in inner radiuses of all layers, are minimized. The formulas for obtaining optimum values of layers radiuses, contact pressures, and radial interferences are derived. A technique for shrink-fitting of cylinders is also described and relationships for radial interferences and required temperature differences between cylinders for each step of the shrink-fitting process are derived using an analytical method. It is indicated that compound cylinders with more layers have higher internal pressure capacity for a specified weight. Three different examples are presented to show the effectiveness of the method.

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Cheng, Li, Xiaohong Che, Can Luo, and Bipeng Yan. "Research and Practice on the In-Situ Calibration System for Flowrate of Pump-Test-Rig." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62032.

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In order to assure the accuracy of pump test rig and stability of measurement, it would be equipped with flow meter of high precision and calibration system. A volume-weight method for in-situ calibration is brought out to achieve bidirectional calibration. The two way calibration can be done on the pump test rig. According to the design objective, the pump, weight tank, pool, commutator and standard measuring cylinder were calculated and selected. Based on measurement uncertainty method, the system uncertainty consisted of uncertainty of standard measuring cylinder, calculagraph, commutator and calibration sensor of volume method. The calculation formulas of these uncertainties are presented. The total expanded uncertainty of system is 0.136% and the stability of flowrate is 0.0212%. Results from calculation and pressure pulse experiment indicate that the combination of the convert-frequency facility with invariableness’ pool can maintain the pressure stability of test. The volume-weight calibration method, which combined with the weight method and volume method, can assure the accuracy and also reduce the expensive. It could be applied in similar test rigs.

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Reports on the topic "Weight formulas"

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Cordwell, William. Entropy Approximation Formula for Hamming Weights. Office of Scientific and Technical Information (OSTI), June 2016. http://dx.doi.org/10.2172/1646969.

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Waddell, Dale R. Estimating load weights with Huber's Cubic Volume formula: a field trial. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1989. http://dx.doi.org/10.2737/pnw-rn-484.

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Pebay, Philippe Pierre, Timothy Terriberry, Hemanth Kolla, and Janine Camille Bennett. Formulas for robust, parallel computation of arbitrary-order, arbitrary-variate, statistical moments with arbitrary weights and compounding. Office of Scientific and Technical Information (OSTI), February 2015. http://dx.doi.org/10.2172/1504207.

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Biagio, Di. L52037 Ductile Fracture Propagation Resistance for Advanced Pipeline Designs. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 2008. http://dx.doi.org/10.55274/r0011001.

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The development of a method able to evaluate the ductile fracture behavior on pipelines has been documented. Therefore, methods for the determination of material fracture resistance and crack driving force have been accurately investigated. In particular, the techniques to determine the critical fracture characterizing parameter CTOA (crack tip opening angle) have been reviewed in-depth (back-slotted drop weight tear tests [DWTT], two specimen CTOA tests, etc.), and in view of a future pipe-mill application. For a more reliable CTOA estimate the needed following parameters have been investigated: 1) rotation factor in a DWTT and 2) the material flow stress to be used in dynamic tests. On the other hand, as far as the crack driving force is concerned, a finite element code developed by CSM (PICPRO) has been successfully used to evaluate the correlation between the CTOA inferred by DWT tests and that measured on pipe. In addition PICPRO has been used to determine the driving force acting on pipe in a wide range of operating conditions, finally supplying an appropriate formula for its calculation. Once the driving force and the fracture resistance have been determined their comparison allows crack arrest assessment.

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Mitchell, Brian G., Amir Neori, Charles Yarish, D. Allen Davis, Tzachi Samocha, and Lior Guttman. The use of aquaculture effluents in spray culture for the production of high protein macroalgae for shrimp aqua-feeds. United States Department of Agriculture, January 2013. http://dx.doi.org/10.32747/2013.7597934.bard.

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The FAO has projected a doubling in world demand for seafood during the 21 ed from aquaculture of marine fish and shrimps fed primarily on fishmeal-based aquafeeds. However, current practices of high intensity monoculture of shrimp in coastal ponds and fish in offshore pens have been strongly criticized as being ecologically and socially unsustainable. This view derives from un- checked eutrophication of coastal marine ecosystems from fish farm effluents, and the destruction of coastal estuarine ecosystems by shrimp farm constructions, plus aquaculture’s reliance on wild-caught small fish - which are excellent food for humans, but instead are rendered into fishmeal and fish oil for formulating aquafeeds. Fishmeal-sparing and waste- reduction aquafeeds can only delay the time when fed aquaculture product are priced out of affordability for most consumers. Additionally, replacement of fishmeal protein and fish oil by terrestrial plant sources such as soybean meal and oil directly raises food costs for human communities in developing nations. New formulations incorporating sustainably-produced marine algal proteins and oils are growing in acceptance as viable and practical alternatives. This BARD collaborative research project investigated a sustainable water-sparing spray/drip culture method for producing high-protein marine macrophyte meals for incorporation into marine shrimp and fish diets. The spray culture work was conducted at laboratory-scale in the USA (UCSD-SIO) using selected Gracilariaand Ulvastrains isolated and supplied by UCONN, and outdoors at pilot-scale in Israel (IOLR-NCM) using local strains of Ulvasp., and nitrogen/phosphorus-enriched fish farm effluent to fertilize the spray cultures and produce seaweed biomass and meals containing up to 27% raw protein (dry weight content). Auburn University (USA) in consultation with TAMUS (USA) used the IOLR meals to formulate diets and conduct marine shrimp feeding trials, which resulted in mixed outcomes, indicating further work was needed to chemically identify and remove anti-nutritional elements present in the IOLR-produced seaweed meals.

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Keshav, Dr Geetha, Dr Suwaibah Fatima Samer, Dr Salman Haroon, and Dr Mohammed Abrar Hassan. TO STUDY THE CORRELATION OF BMI WITH ABO BLOOD GROUP AND CARDIOVASCULAR RISK AMONG MEDICAL STUDENTS. World Wide Journals, February 2023. http://dx.doi.org/10.36106/ijar/2405523.

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Introduction: Advancements and increase in access to healthcare have increased the life expectancy in India from 32 years in 1947 to almost 70 years currently. Due to robust vaccination and basic health programs, most of the communicable diseases are kept under control. The disease burden is now skewed towards non-communicable diseases. It is an established fact that body mass index (BMI) is a reliable predictor of cardiovascular disease (CVD) later in life. Early prediction can decrease the disease load and enable early preventative measures. A more novel approach of connecting it with blood groups would yield profound results in predictability and subsequent management. This study was done to see correlation between BMI and known blood groups in order to predict the potential incidence of CVDs in medical students. Material and Method - A cross-sectional descriptive study was conducted in Bhaskar Medical College from September 2022 - November 2022. The sample population included 150- 1st year medical students chosen by Randomized sampling method. BMI was calculated based as weight in kilograms divided by the square of the height in meters (kg/m2). Discussion - Many studies conducted on the association of Blood groups with BMI yielded mixed and inconclusive results. On analysis of the data obtained from this study, O- positive blood group showed the highest inclination towards obesity i.e. 30 of the total participants. A-positive and B- positive blood groups were shown to have a lesser association with obesity i.e. 11 participants of the 150. These results were in accordance with a study done among female students by Shireen Javad et.al, nding blood group O to be the most prone to obesity.8 Incompatible to our results, a study conducted by Samuel Smith Isaac Okai et.al. found no signicant association between blood groups and BMI.10 Another study conducted by Christina Ravillo et.al. found that blood group O had the highest and blood group AB with lowest prevalence of obesity9. These ndings were similar to the results obtained in our study. To study the correlation of BMI with ABO blood group and Cardiovascula AIMS and OBJECTIVES Aim: - r risk among medical students. 1. Calculate and segregate the participants according to BM Objectives: - I using the standard formula provided by the WHO. 1. Determine Blood group using antisera 2. Evaluation of Lipid prole in obese individuals

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BENDING MECHANICAL PROPERTIES OF STEEL–WELDED HOLLOW SPHERICAL JOINTS AT HIGH TEMPERATURES. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.146.

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Spatial grid structure is a commonly used long–span structural form due to its various advantages, such as light weight, high strength, low construction cost, and simple construction. Steel–welded hollow spherical joints are widely applied in traditional spatial grid structures. Circular steel tube– and H–shaped steel–welded hollow spherical joints have been applied in practical engineering projects because of aesthetic appearance and structural stress requirements of modern spatial grid structures. Existing studies have mainly focused on the axial compression behaviors of steel–welded hollow spherical joints at high temperatures during fire disasters. However, few studies have discussed the bending mechanical properties of hollow and H–shaped steel–welded hollow spherical joints. This study conducted finite element analysis on the bending mechanical properties of circular steel tube– and H–shaped steel–welded hollow spherical joints at high temperatures. Influences of parameters including the sizes of welded hollow sphere and fashioned iron on the bending mechanical properties of welded hollow spherical joints were considered in the finite element analysis. Moreover, changes in the failure modes, flexural capacities, and flexural rigidities of circular steel tube– and H–shaped steel–welded hollow spherical joints with the increase in temperatures were analyzed. The fitting formulas of the ultimate bearing capacity and initial flexural rigidity of circular steel tube– and H–shaped steel–welded hollow spherical joints at high temperatures were proposed on the basis of parametric analysis.

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SEISMIC PERFORMANCE OF SINGLE-LAYER SPHERICAL RETICULATED SHELLS CONSIDERING JOINT STIFFNESS AND BEARING CAPACITY. The Hong Kong Institute of Steel Construction, June 2022. http://dx.doi.org/10.18057/ijasc.2022.18.2.9.

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Fabricated joints are gradually applied in architectural structures because of their advantages of good economy, high installation quality and efficiency. However, the mechanical properties of this kind of joint are semi-rigid differing from traditional rigid and hinged joints. Therefore, the performance of the structures with such joints is not clear, which greatly limits the wide application of fabricated joints. This paper presents the investigation on the seismic performance of the semi-rigid single-layer reticulated shell structure (SRSS) under earthquake load by numerical simulation and theoretical analysis. A finite element model (FEM) of the semi-rigid reticulated shell was established. The influence of joint stiffness on the seismic performance of semi-rigid SRSS was obtained by taking both initial defects and material damage accumulation into account. The two design parameters, limit stiffness ratio and limit yield moment of the joints, were proposed for the semi-rigid reticulated shells. The influence of the roof span, roof weight and member section on the two design parameters was obtained and the calculation formula was established. The seismic force coefficient for the semi-rigid SRSS was obtained, which can provide support for the seismic design of semi-rigid SRSS.

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