Journal articles: 'Hansen method'

1

MUKAI, Tetsu. "Development of rapid and simple genomic diagnostic method." Japanese journal of leprosy 75, no. 3 (2006): 265–69. http://dx.doi.org/10.5025/hansen.75.265.

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Sekunda, André Krabdrup, Hans Henrik Niemann, Niels Kjølstad Poulsen, and Ilmar Ferreira Santos. "Closed loop identification of a piezoelectrically controlled radial gas bearing: Theory and experiment." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 232, no. 7 (May 7, 2018): 926–36. http://dx.doi.org/10.1177/0959651818769230.

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Gas bearing systems have extremely small damping properties. Feedback control is thus employed to increase the damping of gas bearings. Such a feedback loop correlates the input with the measurement noise which in turn makes the assumptions for direct identification invalid. The originality of this article lies in the investigation of the impact of using different identification methods to identify a rotor-bearing systems’ dynamic model when a feedback loop is active. Two different identification methods are employed. The first method is open loop Prediction Error Method, while the other method is the modified Hansen scheme. Identification based on the modified Hansen scheme is conducted by identifying the Youla deviation system using subspace identification. Identification of the Youla deviation system is based on the Youla–Jabr–Bongiorno–Kucera parametrisation of plant and controller. By using the modified Hansen scheme, identification based on standard subspace identification methods can be used to identify the Youla deviation system of the gas bearing. This procedure ensures the input to the Youla deviation system, and the noise is uncorrelated even though the system is subject to feedback control. The effect of identifying the Youla deviation system compared to direct subspace identification of the gas bearing is further investigated through a simulation example. Experiments are conducted on the piezoelectrically controlled radial gas bearing. A dynamic model is identified using the modified Hansen scheme as well as using Prediction Error Method identification. The resulting models are compared for different imperfect nominal models, to examine under which conditions each method should be used.

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Agata, Yusuke, and Hideki Yamamoto. "Determination of Hansen solubility parameters of ionic liquids using double-sphere type of Hansen solubility sphere method." Chemical Physics 513 (September 2018): 165–73. http://dx.doi.org/10.1016/j.chemphys.2018.04.021.

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Madan, Ved P. "Interval Newton method: Hansen-Greenberg approach—some procedural improvements." Applied Mathematics and Computation 35, no. 3 (February 1990): 263–76. http://dx.doi.org/10.1016/0096-3003(90)90046-6.

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YAMAZAKI, Toshio, Masaichi GIDOH, and Masanori MATSUOKA. "Basic evaluation for new antimicrobial susceptibility testing of Mycobacterium leprae by bioluminescence assay (ATP method)." Japanese journal of leprosy 75, no. 3 (2006): 227–37. http://dx.doi.org/10.5025/hansen.75.227.

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Kasai, Norio. "Maxillary bone deformation in patients with leprosy: a novel method for quantitative evaluation by CT scan." JAPANESE JOURNAL OF LEPROSY 88, no. 2 (2019): 43–49. http://dx.doi.org/10.5025/hansen.88.43.

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Kumaseh, Eunike, Yuliana Varala Tatontos, and Costantein Imanuel Sarapil. "Prediksi Transport Sedimen di Perairan Teluk Tahuna Kabupaten Kepulauan Sangihe." Journal of Marine Research 9, no. 3 (July 16, 2020): 207–14. http://dx.doi.org/10.14710/jmr.v9i3.26537.

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ABSTRAK: Secara geografis, Teluk Tahuna diapit oleh 2 muara sungai yaitu Muara Sungai Tidore, yang dekat dengan Pelabuhan Nusantara Tahuna, dan Muara Sungai Towo’e. Hal ini memungkinkan terjadinya sedimentasi.Sehingga, perlu diketahui besarnya angkutan sedimen yang terjadi di perairan Teluk Tahuna.Metode penelitian yang digunakan yaitu membandingkan metode Engelund-Hansen dengan hasil pengukuran di lapangan. Pengambilan sedimen menggunakan sediment trap dan diukur selama 2 minggu sekali sebanyak 5 kali. Sedimen dibawa ke Laboratorium Mekanika Tanah untuk memperoleh ukuran diameter sedimen. Lokasi penelitian dibagi menjadi 3 stasiun, Stasiun 1 dekat muara sungai Tidore, Stasiun 2 pada bagian tengah perairan, dan Stasiun 3 dekat muara sungai Towoé. Hasil prediksi transport sedimen di Perairan Teluk Tahuna dengan metode Engelund-Hansen yaitu pada Stasiun 1 = 0,00000291(m3/m*s), Stasiun 2 = 0,00000697(m3/m*s), dan Stasiun 3 = 0,00000789(m3/m*s). Perhitungan transport sedimen yang paling tinggi adalah di Stasiun 3. Pengukuran laju sedimentasi yaitu pada Stasiun 1 sebesar 0,0000029 m3/hari, Stasiun 2 sebesar 0,0000053 m3/hari dan pada Stasiun 3 sebesar 0,0000072 m3/ hari. Rata – rata hasil pengukuran yang paling tinggi juga ada di Stasiun 3,yaitu dekat Muara Sungai Towoé. Hasil prediksi Metode Engelund-Hansen hampir sama dengan hasil pengukuran laju sedimen di lapangan. Metode Engelund-Hansen cocok digunakan untuk memprediksi transport sedimen di Perairan Teluk Tahuna. ABSTRACT: Geographically, Tahuna Bay has 2 river mouths, the Tidore river mouth, which is close to the Tahuna Harbor, and Towo'e river mouth. This allows sedimentation. So, it is necessary to know the calculation of sediment transport. The research method is comparing the Engelund-Hansen method with the results of measurements. Sediment rate measured by sediment trap and once in 2 weeks for 5 times. Sediments were taken to the Soil Mechanics Laboratory. The location was divided into 3 stations. The results of prediction of sediment transport in Tahuna Bay with the Engelund-Hansen method are Station 1 = 0,00000291 (m3/m*s), Station 2 = 0,00000697 (m3/m *s), and Station 3 = 0,00000789 (m3/m*s). The highest calculation of sediment transport is at Station 3. The average measurement of sedimentation rate at Station 1 of 0,0000029 m3/day, Station 2 of 0,0000053 m3/day and at Station 3 is 0,0000072 m3/day. The highest average measurement results are also at Station 3, which is near the Towoé River Estuary. The predicted results of the Engelund-Hansen Method are almost the same as those of the sediment rate measurements in the field. Engelund-Hansen Method can be used to predict the sediment transport in Tahuna bay.

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Segarceanu, Ovidiu, and Minodora Leca. "Improved method to calculate Hansen solubility parameters of a polymer." Progress in Organic Coatings 31, no. 4 (August 1997): 307–10. http://dx.doi.org/10.1016/s0300-9440(97)00088-x.

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Suyanto, Hadiani Rintis, and Mantasa Salve Prastica Rian. "The Analysis of Sediment Transport Using Yang Method, Engelund-Hansen Method, and Bagnold Method in Bah Bolon River, Simalungun Regency of North Sumatera." Applied Mechanics and Materials 845 (July 2016): 30–34. http://dx.doi.org/10.4028/www.scientific.net/amm.845.30.

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The development of the construction that changes land use has resulted the decreasing of infiltration and erosion and the increasing of the sedimentation. So, the floated sediment in the river of Bah Bolon can interfere the performance of turbines of Microhydro Power Plant (MHP). The planning of sediment harvesting media requires data of total amount of sediment transport that occurs in the River of Bah Bolon. So the "The Analysis of Sediment Transport in River of Bah Bolon" needs to be done. Based on secondary data, there are two samples in this study. Sediment transport analysis using three methods, namely Yang Method, Method of Engelund and Hansen, and Bagnold Method. The analyzes show the results of the amount of sediment transport. In the first sample, the results of that three method analysis respectively are 1041.23 tons/year; 12.60 tons/year, and 241.63 tons/year. In the second sample, the results of the three method analysis respectively are 1210.36 tons/year; 11.49 tons/year; and 241.63 tons/year. The results were compared with the results of the calculation of Intan (2015) to conclude what method that is best applied in Bah Bolon River. By ratio analysis, Yang Method is the best method compared to other methods that analiyze the total sediment transport in the Bah Bolon River. The author is not recommend using Bagnold Method or Engelund and Hansen Method to calculate the amount of sediment transport in Bah Bolon river.

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10

András, Csaba Dezső, László Mátyás, Botond Ráduly, and Rozália Veronika Salamon. "Increasing the Prediction Efficiency of Hansen Solubility Parameters in Supercritical Fluids." Periodica Polytechnica Chemical Engineering 63, no. 2 (March 18, 2019): 286–93. http://dx.doi.org/10.3311/ppch.12780.

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This work describes a simplified method developed for calculating the Hansen parameters (HSPs) for scCO2-polar modifier solvent mixtures. The method consists in fitting 2nd order equations on the calculated values of HSPs of pure components in function of pressure and temperature. It has been proved that these equations are suitable for the characterization of the above system. The current work also proposes a modified representation method, which eliminates the shortcomings of the original ternary Teas diagram, normally used for the representation of the Hansen parameters. On the one hand, the Teas diagram uses quantities without any physical meaning and, on the other hand, the illustration of the solubility information is distorted because it does not take into account the differences of the Hildebrand parameters of different solvents. The factors we have chosen to represent on the ternary diagram possess physical meaning (cohesion energy density partitions). The distortion was eliminated by extending the Teas diagram to a prismatic three dimensional representation. We proved that the Hansen-ellipsoid from the Cartesian coordinate system (dd = f (δH, dp)) is transformed in an ellipsoid also in the new coordinate system (the transformation is pseudo-isomorphic). Nonetheless, the suggested corrections improve the accuracy of the Hansen method, in some cases the interactions between the solvents and the dissolved materials are still not predicted with sufficient accuracy. Most probably a thermodynamic-based correction of the values of the HSPs of small molecules could lead to a significant improvement of the predictive ability of the newly developed method.

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11

Kai, Masanori. "Rapid detection of mutations related to Mycobacterium leprae drug resistance by using Hp-rPCR (hairpin primer- real time PCR) method." Japanese journal of leprosy 83, no. 1 (2014): 6–13. http://dx.doi.org/10.5025/hansen.83.6.

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12

Ahn, Sung-Yul, Hyang-Joon Park, and Jong-Pill Kim. "Easy method for Upper lid blepharoplasty in elderly Hansen affected persons." Korean Leprosy Bulletin 52, no. 1 (2019): 23. http://dx.doi.org/10.33161/klb.2019.52.1.23.

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13

Gharagheizi, Farhad, and Mahmood Torabi Angaji. "A New Improved Method for Estimating Hansen Solubility Parameters of Polymers." Journal of Macromolecular Science, Part B 45, no. 2 (March 2006): 285–90. http://dx.doi.org/10.1080/00222340500522372.

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14

Weng, Ming. "Determination of the Hansen solubility parameters with a novel optimization method." Journal of Applied Polymer Science 133, no. 16 (December 24, 2015): n/a. http://dx.doi.org/10.1002/app.43328.

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15

Blistamante, P., D. V. Hinkley, A. Martin, and S. Shi. "Statistical Analysis of the Extended Hansen Method Using the Bootstrap Technique." Journal of Pharmaceutical Sciences 80, no. 10 (October 1991): 971–77. http://dx.doi.org/10.1002/jps.2600801014.

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16

Chabert, Gilles, and Alexandre Goldsztejn. "Extension of the Hansen-Bliek Method to Right-Quantified Linear Systems." Reliable Computing 13, no. 4 (June 2, 2007): 325–49. http://dx.doi.org/10.1007/s11155-007-9037-6.

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17

Stefanis, Emmanuel, and Costas Panayiotou. "Prediction of Hansen Solubility Parameters with a New Group-Contribution Method." International Journal of Thermophysics 29, no. 2 (April 2008): 568–85. http://dx.doi.org/10.1007/s10765-008-0415-z.

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18

MATSUOKA, Masanori, Yasuhiko SUZUKI, and Masanao MAKINO. "A novel method for simple detection of mutations conferring drug resistance in Mycobacterium leprae, based on a DNA microarray, and its applicability in developing countries." JAPANESE JOURNAL OF LEPROSY 79, no. 3 (2010): 257–61. http://dx.doi.org/10.5025/hansen.79.257.

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19

Gharagheizi, Farhad, Mehdi Sattari, and Mahmood Torabi Angaji. "Effect of Calculation Method on Values of Hansen Solubility Parameters of Polymers." Polymer Bulletin 57, no. 3 (April 26, 2006): 377–84. http://dx.doi.org/10.1007/s00289-006-0568-5.

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20

Tsutsumi, Shinichi, Kenji Kondo, Yuki Kato, Nobuyuki Fujiwara, and Hideki Yamamoto. "Determination of Hansen solubility parameters of particles using a capillary penetration method." Chemical Physics 521 (May 2019): 115–22. http://dx.doi.org/10.1016/j.chemphys.2019.01.018.

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Sharma, J. R., R. K. Guha, and Rajni Sharma. "Some variants of Hansen–Patrick method with third and fourth order convergence." Applied Mathematics and Computation 214, no. 1 (August 2009): 171–77. http://dx.doi.org/10.1016/j.amc.2009.03.062.

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Sun, Qian Qian, Tai Quan Zhou, and Xiao Jie Gu. "Subgrade Limit Bearing Capacity Calculation Using Slip Line Method." Applied Mechanics and Materials 580-583 (July 2014): 3003–6. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.3003.

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Limit bearing capacity of foundation soil was studied in the paper using slip line method. Slip line results are found to be consistent with the results calculated by Terzaghi theoretical formula and Hansen theoretical formula. Then the influence of factors such as cohesion and friction angle is studied under complete smooth or complete tough conditions. The results show that in a certain range, limit bearing capacity of foundation increases with the increase of C0, Φ. Limit bearing capacity of foundation under complete smooth condition is lower than the complete tough one.

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Stanciu, Ioana. "Methods for Determining the Solubility Parameter of Additives for Lubricating Oils." Oriental Journal Of Chemistry 35, no. 4 (July 22, 2019): 1297–301. http://dx.doi.org/10.13005/ojc/350407.

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In this article I have been looking at the determination of the solubility parameter by two methods for an additive KELTAN 4200 used in lubricating oils. To determine the solubility parameter, it is necessary to know the intrinsic viscosities of the polymer in as many solvents with different solubility parameters. Determination of the partial and global solubility parameters was done, first, using the Hansen method, then by an improved method.

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Rosa Nunes, Danilo, Matthieu Raynal, Benjamin Isare, Pierre-Antoine Albouy, and Laurent Bouteiller. "Organogel formation rationalized by Hansen solubility parameters: improved methodology." Soft Matter 14, no. 23 (2018): 4805–9. http://dx.doi.org/10.1039/c8sm00562a.

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Kourtellos, Andros, Thanasis Stengos, and Chih Ming Tan. "STRUCTURAL THRESHOLD REGRESSION." Econometric Theory 32, no. 4 (April 20, 2015): 827–60. http://dx.doi.org/10.1017/s0266466615000067.

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This paper introduces the structural threshold regression (STR) model that allows for an endogenous threshold variable as well as for endogenous regressors. This model provides a parsimonious way of modeling nonlinearities and has many potential applications in economics and finance. Our framework can be viewed as a generalization of the simple threshold regression framework of Hansen (2000, Econometrica 68, 575–603) and Caner and Hansen (2004, Econometric Theory 20, 813–843) to allow for the endogeneity of the threshold variable and regime-specific heteroskedasticity. Our estimation of the threshold parameter is based on a two-stage concentrated least squares method that involves an inverse Mills ratio bias correction term in each regime. We derive its asymptotic distribution and propose a method to construct confidence intervals. We also provide inference for the slope parameters based on a generalized method of moments. Finally, we investigate the performance of the asymptotic approximations using a Monte Carlo simulation, which shows the applicability of the method in finite samples.

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Lely Hardianti Zendrato, Nur, Dhemi Harlan, Mohammad Bagus Adityawan, and Dantje Kardana Natakusumah. "1D Numerical modelling of dam break using finite element method." MATEC Web of Conferences 270 (2019): 04022. http://dx.doi.org/10.1051/matecconf/201927004022.

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In numerical modeling, dam break is one case that has its own challenges, because shock wave is found in the dam break modeling that usually provides a numerical instability. Usually, dam break problem is solved by Saint Venant equation using a finite difference method with artificial dissipation or Total Variation Diminishing (TVD) filter. But in this research, finite element method and the finite difference method are used. To verify the accuracy of the model, a comparison against the Stoker analytical method for dam break case was performed. Numerical modeling of dam break is required to find out the collapse area, thus it is used for determining mitigation that can be done in the area, related to dam safety. In numerical modeling, oscillation or numerical instability often occurs, for which special treatment is required to reduce or eliminate the oscillations. In this research, the treatment for that case is a Hansen filter for both methods. From the simulation result, it is found that Hansen filter is sensitive in reducing oscillation depending on the correction factor value and Δt that used. For dam break case, after filter applied, the value of Pearson Correlation Coefficient of Taylor Galerkin and Mac-Cormack methods are 0.999. The error rate for a Taylor Galerkin method are 0.118% at t = 3s and 0.123% at t = 10s. The error rate for Mac-Cormack method are 0.043% at t = 3s and 5.048% at t = 10s. From the comparison of the model, it can be concluded that Taylor Galerkin finite element method proved to be capable and more accurate in simulating dam break compared to Mac-Cormack finite difference method.

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Bech-Nielsen, Anne Britt, and Anders Rom. "Incentive compensation in Fritz Hansen: The shortfall of incentives theory and the insights from contingency theory." Corporate Ownership and Control 4, no. 2 (2007): 271–80. http://dx.doi.org/10.22495/cocv4i2c2p3.

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This paper studies incentive compensation at Fritz Hansen, a Danish manufacturer of exclusive design furniture. A vast amount of literature exists within incentives theory. However, regardless of the establishedness of incentives theory it is not able to fully explain the case at Fritz Hansen. Several short-comings of incentives theory are found: managers whose compensation is not tied to BSC measures behave in accordance with these measures; no bonus bank is included in the incentives system to accompany EVA measures on which managers are rewarded but there seem to be no resulting focus on short-term results; managers self-select the bonus measures but they select measures that they cannot directly influence. Regardless of these breaches, the situation at Fritz Hansen seems to be in equilibrium with managers behaving in the interest of the owners and the owner representatives being satisfied with the incentives system. In order to better understand how and why the design of incentive compensation at Fritz Hansen seems to function, contingency theory is drawn upon. While contingency theory provides a usable framework for the study important variables not previously mentioned in contingency theory is missing before the case of Fritz Hansen can be explained. Using the case study method the variables change urgency, the presence of an ultimate lagging goal, the legitimising effect, the system of measurement, non-financial measurement and lastly the controllability principle are extracted from the case. Together, these can explain why EVA is still included as a compensation base and why managers are motivated by BSC measures although they are not part of the compensation base

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Tsutsumi, Shinichi, Yuki Kato, Nobuyuki Fujiwara, and Hideki Yamamoto. "Measurement of hansen solubility parameter on pollen particle surface using capillary penetration method." Materials Chemistry and Physics 240 (January 2020): 122170. http://dx.doi.org/10.1016/j.matchemphys.2019.122170.

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29

He, Miao-fu, and Jie Zhang. "Automatic computer evaluation of general perturbation for Flora asteroids. I. The Hansen method." Chinese Astronomy and Astrophysics 14, no. 3 (September 1990): 306–16. http://dx.doi.org/10.1016/0275-1062(90)90056-j.

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30

Chen, Ming, and Tai Quan Zhou. "Normally Consolidated Subgrade Limit Bearing Capacity Calculation Using Slip Line Method." Applied Mechanics and Materials 580-583 (July 2014): 3183–86. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.3183.

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Normally consolidated subgrade limit bearing capacity of foundation soil was studied in the paper using slip line method. Slip line results are found to be consistent with the results calculated by Terzaghi theoretical formula and Hansen theoretical formula. Then the influence of cohesion, friction angle for normally consolidated subgrade is studied under complete smooth or complete tough conditions. The results show that the normally consolidated subgrade limit bearing capacity increases linearly with the increase of k, γ, while it increases nonlinear with the increase of Φ and the increasing growth rate improves with increasing value of Φ.

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31

He, M. F., and Zhangjie. "Automated Computation of General Perturbations for the Flora Asteroidal Group." Publications of the Astronomical Society of Australia 9, no. 1 (1991): 149. http://dx.doi.org/10.1017/s1323358000025340.

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AbstractThe general perturbations of the asteroids of the Flora group (975″ < n < 1150″, n - the mean daily motion) due to Jupiter have been automatically computed on an IBM 4341 computer with the Hansen method by manipulating Broucke’s Symbolic Poisson Series Processor, and the results have been compared with that computed previously with the Bohlin group method.

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Leslie, Laurel R., Thomas E. Southard, Karin A. Southard, John S. Casko, Jane R. Jakobsen, Elizabeth A. Tolley, Stephen L. Hillis, Chris Carolan, and Mark Logue. "Prediction of mandibular growth rotation: Assessment of the Skieller, Björk, and Linde-Hansen method." American Journal of Orthodontics and Dentofacial Orthopedics 114, no. 6 (December 1998): 659–67. http://dx.doi.org/10.1016/s0889-5406(98)70198-2.

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Detriche, S., G. Zorzini, J. F. Colomer, A. Fonseca, and J. B. Nagy. "Application of the Hansen Solubility Parameters Theory to Carbon Nanotubes." Journal of Nanoscience and Nanotechnology 8, no. 11 (November 1, 2008): 6082–92. http://dx.doi.org/10.1166/jnn.2008.sw16.

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Carbon nanotubes (CNT) are very promising nano-objects due to their exceptional properties. However, their tendency to form bundles as well as their insolubility in common solvents makes them difficult to handle. The main way to solve the problem is chemical or physical CNTs functionalisations, with all the problems inherent to the methods. In this contribution, we present a new approach that allows predicting the solubility of carbon nanotubes in many solvents but also predicting the most appropriate solvents to use for given samples of CNTs. Solubilisation and dispersion being directly connected, the present approach of solubilisation proves also to be efficient in dispersing the CNTs bundles. This contribution is a first step toward the control of carbon nanotube's dispersion in polymers and their homogenous functionalisation. Moreover, we also report here a new method, based on solvents, to separate carbon nanotubes by size, the use of mixture of non-solvents in order to obtain good solvents and the use of mixture of good solvents to obtain higher solubility. The use of mixture of good solvents allowed us to obtain high solubility, up to three times higher then that reported in literature. We have also measured and analysed the solubility of some functionalised carbon nanotubes.

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Manjón, Miguel, and Juan Mañez. "Production Function Estimation in Stata Using the Ackerberg–Caves–Frazer Method." Stata Journal: Promoting communications on statistics and Stata 16, no. 4 (December 2016): 900–916. http://dx.doi.org/10.1177/1536867x1601600406.

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We present a new e-class command, acfest, that implements the method of Ackerberg, Caves, and Frazer (2015, Econometrica 83: 2411–2451) to estimate production functions. This method deals with the functional dependence problems that may arise in the methods proposed by Olley and Pakes (1996, Econometrica 64: 1263–1297) and, particularly, Levinsohn and Petrin (2003, Review of Economic Studies 70: 317–341) (implemented in Stata by Yasar, Raciborski, and Poi [2008, Stata Journal 8: 221–231] and Petrin, Poi, and Levinsohn [2004, Stata Journal 4: 113–123], respectively). In particular, the acfest command yields (nonlinear, robust) generalized method of moments estimates using a Mata function and two specification tests (Wald and Sargan–Hansen). After estimation, predict provides the estimated productivity of the firms in the sample.

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Maya-López, Armando, Fran Casino, and Agusti Solanas. "Improving Multivariate Microaggregation through Hamiltonian Paths and Optimal Univariate Microaggregation." Symmetry 13, no. 6 (May 21, 2021): 916. http://dx.doi.org/10.3390/sym13060916.

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The collection of personal data is exponentially growing and, as a result, individual privacy is endangered accordingly. With the aim to lessen privacy risks whilst maintaining high degrees of data utility, a variety of techniques have been proposed, being microaggregation a very popular one. Microaggregation is a family of perturbation methods, in which its principle is to aggregate personal data records (i.e., microdata) in groups so as to preserve privacy through k-anonymity. The multivariate microaggregation problem is known to be NP-Hard; however, its univariate version could be optimally solved in polynomial time using the Hansen-Mukherjee (HM) algorithm. In this article, we propose a heuristic solution to the multivariate microaggregation problem inspired by the Traveling Salesman Problem (TSP) and the optimal univariate microaggregation solution. Given a multivariate dataset, first, we apply a TSP-tour construction heuristic to generate a Hamiltonian path through all dataset records. Next, we use the order provided by this Hamiltonian path (i.e., a given permutation of the records) as input to the Hansen-Mukherjee algorithm, virtually transforming it into a multivariate microaggregation solver we call Multivariate Hansen-Mukherjee (MHM). Our intuition is that good solutions to the TSP would yield Hamiltonian paths allowing the Hansen-Mukherjee algorithm to find good solutions to the multivariate microaggregation problem. We have tested our method with well-known benchmark datasets. Moreover, with the aim to show the usefulness of our approach to protecting location privacy, we have tested our solution with real-life trajectories datasets, too. We have compared the results of our algorithm with those of the best performing solutions, and we show that our proposal reduces the information loss resulting from the microaggregation. Overall, results suggest that transforming the multivariate microaggregation problem into its univariate counterpart by ordering microdata records with a proper Hamiltonian path and applying an optimal univariate solution leads to a reduction of the perturbation error whilst keeping the same privacy guarantees.

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Bhanja, Niyati, Arif Dar, and Aviral Tiwari. "Exchange rate and monetary fundamentals: Long run relationship revisited." Panoeconomicus 62, no. 1 (2015): 33–54. http://dx.doi.org/10.2298/pan1501033b.

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This study re-examines the long run validity of the monetary approach to exchange rate determination for India. In particular, the long run association of bilateral nominal exchange rate of Indian rupee vis-?-vis USD, Pound-sterling, Yen and Euro against the corresponding monetary fundamentals that the model underlines has been tested using Johansen-Juselius maximum likelihood framework and Gregory-Hansen co-integration approach. Irrespective of the exchange rates the study finds a co-integrating relationship among the variables using Johansen-Juselius maximum likelihood approach. The Gregory-Hansen co-integration method allows for one break determined endogenously in three specifications also confirms the long run relationship. Our results, hence, suggest that the monetary model is a valid theory of long run equilibrium condition for the rupee-dollar, rupee-pound, rupee-yen and rupee-euro exchange rates.

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Pawlowski, Robert. "Reply by the author to the discussion by Hualin Zeng and Deshu Xu." GEOPHYSICS 66, no. 2 (March 2001): 698. http://dx.doi.org/10.1190/1.1487047.

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I am gratified by the interest of Hualin Zeng and Deshu Xu in my work on preferential continuation. I should mention that the method owes its origin to concepts related to the subject of Wiener regional‐residual separation filtering — ideas and theory that were first introduced to me years ago by Richard O. Hansen.

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Gagliardini, Patrick, and Diego Ronchetti. "Comparing Asset Pricing Models by the Conditional Hansen-Jagannathan Distance*." Journal of Financial Econometrics 18, no. 2 (April 19, 2019): 333–94. http://dx.doi.org/10.1093/jjfinec/nbz013.

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Abstract We compare nonnested parametric specifications of the stochastic discount factor (SDF) using the conditional Hansen–Jagannathan (HJ-) distance. This distance measures the discrepancy between a parametric model-implied SDF and the admissible SDF’s satisfying all the conditional (dynamic) no-arbitrage restrictions, instead of just few unconditional no-arbitrage restrictions for managed portfolios chosen through the instrument selection. We estimate the conditional HJ-distance by a generalized method of moments estimator and establish its large sample properties for model selection purposes. We compare empirically several SDF models including multifactor beta pricing specifications and some recently proposed SDF models that are conditionally linear in consumption growth.

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Pilkington, Mark, and Olivier Boulanger. "Potential field continuation between arbitrary surfaces — Comparing methods." GEOPHYSICS 82, no. 3 (May 1, 2017): J9—J25. http://dx.doi.org/10.1190/geo2016-0210.1.

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The continuation of potential field data from one irregular surface to another, not always horizontal, is often a necessary component within the data processing and interpretation stream. The most common requirement is to reduce field values (or some related component or derivative) to a horizontal plane, to facilitate further quantitative processing. Methods available to continue data comprise two main approaches. The first (source-based) involves calculating a source distribution that produces a fit to the data and can be used to calculate the field at any other point above. The second (field-based) requires no source determinations and deals with only fields but may involve calculating the field on some intermediate surface. Nine different continuation methods were compared (four source based and five field based) through synthetic tests and on real data from a helicopter-borne survey in Yukon, Canada. The preferred methods of Guspi and Hansen are those that do not involve any theoretical or geometric approximations and involve intermediate calculations on a plane or surface close to the observation surface. The Guspi approach is faster, based on using frequency-domain processing, but the Hansen method uses equivalent sources close enough to and consistently below the observation surface so that no low-pass filtering needs to be used.

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Ahn, Sung Yul, Jong-Pill Kim, and Hyang Joon Park. "An Easy Method of Masseter muscle sling for lower lip paralysis in senile Hansen Patients." Korean Leprosy Bulletin 53, no. 1 (2020): 15. http://dx.doi.org/10.33161/klb.2020.53.1.15.

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Akinbode, Sakiru Oladele, Adewale Oladapo Dipeolu, Tobi Michael Bolarinwa, and Oladayo Babaseun Olukowi. "Effect of health outcome on economic growth in sub-Saharan Africa: a system generalized method of moment approach." Journal of Economics and Development 23, no. 3 (March 22, 2021): 254–66. http://dx.doi.org/10.1108/jed-06-2020-0078.

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PurposeSome progress have been made over time in improving health conditions in Sub-Saharan Africa (SSA). There are, however, contradicting reports on the relationship between health outcomes and economic growth in the region. The paper aimed at assessing the effect of health outcome on economic growth in SSA.Design/methodology/approachData for 41 countries from 2000 to 2018 were obtained from WDI and WGI and analyzed using system generalized method of moment (sGMM) which is appropriate for the present scenario. AR(1) and AR(2) tests were used to assess the validity of the model while Sargan and Hansen tests were adopted to examine the validity of the instrumental variables. The robustness of the estimation was confirmed using the pooled OLS and fixed effect regression.FindingsHealth outcome (proxied by life expectancy), lagged GDP per capita, capital formation, labor force (LF), health expenditure (HE), foreign direct investment (FDI) and trade openness (TOP) significantly affected economic growth emphasizing the importance of health in the process of economic growth in the region. AR(1) and AR(2) tests for serial correlation and Sargan/Hansen tests confirmed the validity of the estimated model and the instrumental variables respectively. Robustness of the GMM results was established from the pooled OLS and the fixed effect model results.Social implicationsImprovement in the national health system possibly through the widespread adoption of National Health Insurance, increase government spending on healthcare alongside increased beneficial trade and ease of doing business to facilitate investment were recommended to enhance.Originality/valueThe study used up-to-date data with appropriate methodology.

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Henderson, R., C. F. Kao, and T. Friede. "A Note on Testing for Intervention Effects on Binary Responses." Methods of Information in Medicine 45, no. 04 (2006): 435–40. http://dx.doi.org/10.1055/s-0038-1634101.

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Summary Objectives: In some circumstances controlled trials are not feasible and treatments can only be evaluated using clinical databases. Here we consider the situation where treatment is introduced at a particular calendar time and can only be evaluated by comparison with historical controls. In these circumstances Heuer and Abel recommended using change-point methods to search for change in characteristics over the whole study period rather than simply comparing treated and untreated patients. Their recommendation is to only conclude that the intervention had an effect if a change-point could be demonstrated close in time to the introduction of the new treatment. This reduces the risk of false positives caused by confounding changes in population characteristics or changes in patient management. For binary data we develop a method that follows their philosophy and apply it to an observational study in the treatment of pin sites after orthopaedic surgery. Methods: Tests for change in binomial probabilities based on Brownian bridge and Hansen’s approximation for maximally selected X 2 statistics are compared to an exact test by Worsley. The approximate method is generalized to logistic regression models allowing for covariates. Results: The agreement of the exact and approximate method is good for sample sizes of 100 or more. The actual test size of the Hansen approximate test allowing for covariates is close to the nominal level, whereas the Brownian bridge approximation is slightly conservative. The change in pin site treatment significantly reduces the risk of infection for both adults and children. Conclusions: We consider the Hansen approximation to provide a very good and very simple method for obtaining the p-value when testing for a change in binary data event probabilities, with or without covariates.

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Uwamusi, SE. "Modified Nguyen and Revol’s method for solution set of linear interval system based on Rohn’s method without interval data inputs." Global Journal of Mathematical Sciences 12, no. 1 (January 19, 2015): 53–56. http://dx.doi.org/10.4314/gjmas.v12i1.17.

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The paper is a modificationofNguyen and Revol‟s method for the solution set to the linear interval system. The presented methoddoes not require solving Kahan‟s arithmetic which may be a hindrance to that of Nguyen and Revol‟s method as Nguyen and Revol‟s method relies mainly on interval data inputs.Our method under consideration first advances solutionusing real floating point LU Factorization to the real point linear system and then solves a preconditioned residual linear interval system for the error term by incorporating Rohn‟s method which does not make use of interval data inputs wherein, the use of united solution set in the sense of Shary comes in handy as a tool for bounding solution for the linear interval system. Special attention is paid to the regularity of the preconditioned interval matrix. Numerical exampleis used to illustrate the algorithm and remarks are made based on the strength of our findings.KEY WORDS:refinement of solution, linear interval system, Rohn‟s method, Hansen-Bliek-Rohnmethod, preconditioned residual linear interval iteration, kahan‟s arithmetic

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Paluba, Daniel, Josef Laštovička, Antonios Mouratidis, and Přemysl Štych. "Land Cover-Specific Local Incidence Angle Correction: A Method for Time-Series Analysis of Forest Ecosystems." Remote Sensing 13, no. 9 (April 30, 2021): 1743. http://dx.doi.org/10.3390/rs13091743.

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This study deals with a local incidence angle correction method, i.e., the land cover-specific local incidence angle correction (LC-SLIAC), based on the linear relationship between the backscatter values and the local incidence angle (LIA) for a given land cover type in the monitored area. Using the combination of CORINE Land Cover and Hansen et al.’s Global Forest Change databases, a wide range of different LIAs for a specific forest type can be generated for each scene. The algorithm was developed and tested in the cloud-based platform Google Earth Engine (GEE) using Sentinel-1 open access data, Shuttle Radar Topography Mission (SRTM) digital elevation model, and CORINE Land Cover and Hansen et al.’s Global Forest Change databases. The developed method was created primarily for time-series analyses of forests in mountainous areas. LC-SLIAC was tested in 16 study areas over several protected areas in Central Europe. The results after correction by LC-SLIAC showed a reduction of variance and range of backscatter values. Statistically significant reduction in variance (of more than 40%) was achieved in areas with LIA range >50° and LIA interquartile range (IQR) >12°, while in areas with low LIA range and LIA IQR, the decrease in variance was very low and statistically not significant. Six case studies with different LIA ranges were further analyzed in pre- and post-correction time series. Time-series after the correction showed a reduced fluctuation of backscatter values caused by different LIAs in each acquisition path. This reduction was statistically significant (with up to 95% reduction of variance) in areas with a difference in LIA greater than or equal to 27°. LC-SLIAC is freely available on GitHub and GEE, making the method accessible to the wide remote sensing community.

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Markin, Vladislav S., and Alexander G. Volkov. "The Hansen method for the description of adsorption at a curved interface between immiscible liquids: An extension of the Gibbs method." Journal of Colloid and Interface Science 135, no. 2 (March 1990): 553–61. http://dx.doi.org/10.1016/0021-9797(90)90026-k.

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Pane, Ivindra, Will Hansen, and Ashraf R. Mohamed. "Three-Dimensional Finite Element Study on Effects of Nonlinear Temperature Gradients in Concrete Pavements." Transportation Research Record: Journal of the Transportation Research Board 1629, no. 1 (January 1998): 58–66. http://dx.doi.org/10.3141/1629-08.

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A three-dimensional (3D) finite element (FE) model is developed to investigate whether the condition of plane sections remaining plane exists in concrete pavements subjected to nonlinear temperature gradients. This model is utilized to validate the analytical method proposed by Mohamed and Hansen. The 3D brick element is chosen so that the plane section condition is not imposed in the model, as compared with the model using the flat plate element. Furthermore, the possibility of loss of contact between the pavement slab and the subgrade is studied. The condition of full contact is investigated for a nonlinear temperature gradient that produces the maximum tensile stress in the slab according to the data used. Two slab lengths and two radii of relative stiffness are considered. It is found that plane sections remain plane for the entire slab except for a region very close to the free edges, which also establishes the boundary where solutions by Mohamed and Hansen are applicable. In both cases of the contact condition, the 3D FE model predicts no loss of contact between the slab and the subgrade.

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Christou, Christina, and Nikitas Pittis. "KERNEL AND BANDWIDTH SELECTION, PREWHITENING, AND THE PERFORMANCE OF THE FULLY MODIFIED LEAST SQUARES ESTIMATION METHOD." Econometric Theory 18, no. 4 (May 17, 2002): 948–61. http://dx.doi.org/10.1017/s0266466602184076.

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This paper examines several practical issues regarding the implementation of the Phillips and Hansen fully modified least squares (FMLS) method for the estimation of a cointegrating vector. Various versions of this method arise by selecting between standard and prewhitened kernel estimation and between parametric and nonparametric automatic bandwidth estimators and also among alternative kernels. A Monte Carlo study is conducted to investigate the finite-sample properties of the alternative versions of the FMLS procedure. The results suggest that the prewhitened kernel estimator of Andrews and Monahan (1992, Econometrica 60, 953–966) in which the bandwidth parameter is selected via the nonparametric procedure of Newey and West (1994, Review of Economic Studies 61, 631–653) minimizes the second-order asymptotic bias effects.

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Przybyłek, Maciej, Tomasz Jeliński, and Piotr Cysewski. "Application of Multivariate Adaptive Regression Splines (MARSplines) for Predicting Hansen Solubility Parameters Based on 1D and 2D Molecular Descriptors Computed from SMILES String." Journal of Chemistry 2019 (January 10, 2019): 1–15. http://dx.doi.org/10.1155/2019/9858371.

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A new method of Hansen solubility parameters (HSPs) prediction was developed by combining the multivariate adaptive regression splines (MARSplines) methodology with a simple multivariable regression involving 1D and 2D PaDEL molecular descriptors. In order to adopt the MARSplines approach to QSPR/QSAR problems, several optimization procedures were proposed and tested. The effectiveness of the obtained models was checked via standard QSPR/QSAR internal validation procedures provided by the QSARINS software and by predicting the solubility classification of polymers and drug-like solid solutes in collections of solvents. By utilizing information derived only from SMILES strings, the obtained models allow for computing all of the three Hansen solubility parameters including dispersion, polarization, and hydrogen bonding. Although several descriptors are required for proper parameters estimation, the proposed procedure is simple and straightforward and does not require a molecular geometry optimization. The obtained HSP values are highly correlated with experimental data, and their application for solving solubility problems leads to essentially the same quality as for the original parameters. Based on provided models, it is possible to characterize any solvent and liquid solute for which HSP data are unavailable.

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Peri, Elena, Lars Bo Ibsen, and Benjaminn Nordahl Nielsen. "How to interpret consolidation and creep in Yoldia clay." E3S Web of Conferences 92 (2019): 05005. http://dx.doi.org/10.1051/e3sconf/20199205005.

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The aim of this paper is to define a guideline for an objective interpretation of oedometer tests on Yoldia clay. The approach followed consists in a first analysis where the separation of strains is applied to the consolidation curves. During this phase, primary consolidation strains are filtered from creep by using Brinch-Hansen, Taylor and ANACONDA method. The second phase of the interpretation aims to determine the preconsolidation stress according to three different theories (Akai, Janbu and Casagrande - Terzaghi). The preconsolidation stress values, as well as the consolidation curves, are slightly influenced by the separation of strains method applied, while using different preconsolidation stress theories deeply affects the final results.

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Andrian, Ivan, and Wati A. Pranoto. "ANALISIS ANGKUTAN SEDIMEN DASAR SUNGAI CIBEET DENGAN HEC-RAS DAN UJI LABORATORIUM." JMTS: Jurnal Mitra Teknik Sipil 3, no. 1 (February 25, 2020): 31. http://dx.doi.org/10.24912/jmts.v3i1.7050.

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Cibeet River is a tributary river of the Citarum River. Length of the Cibeet River is 101km with its upstream located on Lemo Mountain and downstream on the Citarum River. This river carries sediment to the Citarum River and is one of the largest supplier of sediment to the Citarum River. Research The Cibeet River sediment transport is only bedload sediment transport. Sediment transport research is carried out by laboratory testing and calculation by HEC-RAS. Laboratory testing is carried out with a circular flume. At HEC-RAS, the method used is Engelund-Hansen, Meyer-Peter and Muller, and Yang. The results of sediment transport with the Meyer-Peter and Muller method are the closest to the results of laboratory testing, between 24.54 % to 50.25 % depends on the flow of water. AbstrakSungai Cibeet merupakan anak Sungai Citarum. Panjang Sungai Cibeet 101km dengan hulu berada di Gunung Lemo dan hilir di Sungai Citarum. Sungai ini membawa sedimen ke Sungai Citarum dan salah satu penyumbang sedimen terbesar ke Sungai Citarum. Penelitian Angkutan sedimen Sungai Cibeet dibatasi hanya pada sedimen dasar. Penelitian angkutan sedimen dilakukan dengan pengujian laboratorium dan perhitungan dengan HEC-RAS. Pengujian laboratorium dilakukan dengan alat circular flume. Pada HEC-RAS, metode yang digunakan adalah Engelund-Hansen, Meyer-Peter and Muller, dan Yang. Hasil angkutan sedimen dengan metode Meyer-Peter and Muller paling mendekati dengan hasil pengujian laboratorium. Perbedaan rata-rata yang didapat antara 24,54 % hingga 50,25 % tergantung pada debit alirannya.

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Journal articles on the topic 'Hansen method'

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