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The Explicit Periodic Wave Solutions and Their Limit Forms for a Generalized b-equation

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Acta Mathematicae Applicatae Sinica 2016年第2期32卷 513-528页

作者： Yi-ren CHEN Wei-bo YE Rui LIU School of Mathematics South China University of Technology

In this paper, for b ∈ （-∞,∞） and b ≠ -1, -2, we investigate the explicit periodic wave solutions for the generalized b-equation ut ＋ 2kux - uxxt ＋（1 ＋ b）u2ux =buxuxx ＋ uuxxx, which contains the generalized Camassa-holm equation and the generalized Degasperis-Procesi equation. Firstly, via the methods of dynamical system and elliptic integral we obtain two types of explicit periodic wave solutions with a parametric variable a. One of them is made of two elliptic smooth periodic wave solutions. The other is composed of four elliptic periodic blow-up solutions. Secondly we show that there exist four special values for a. When a tends to these special values, these above solutions have limits. From the limit forms we get other three types of nonlinear wave solutions, hyperbolic smooth solitary wave solution, hyperbolic single blow-up solution, trigonometric periodic blow-up solution. Some previous results are extended. For b = -1 or b = -2, we guess that the equation does not have any one of above solutions.

关键词： generalized b-equation elliptic integral method explicit periodic wave solutions limit formes

Experimental Investigation of Transmission Properties and All-Optical Label Swapping of Orthogonal IM/FSK Labeled Signals

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光学学报 2003年第S1期23卷 679-680页

作者： Pablo V. holm-Nielsen Christophe Peucheret Idelfonso Tafur Monroy Palle Jeppesen Research Center COM Technical University of Denmark 2800 Kgs. Lyngby DenmarkResearch Center COM Technical University of Denmark 2800 Kgs. Lyngby DenmarkCOBRA Research Institute Eindhoven University of Technology The NetherlandsResearch Center COM Technical University of Denmark 2800 Kgs. Lyngby Denmark

OpticallylabeledIM/FSKsign***-optical label swapping based on MZ-SOA and EAM is presented. Transmission followed by label swapping shows a 2dB overall power penalty.

关键词： FSK on of IM Experimental Investigation of Transmission Properties and All-Optical Label Swapping of Orthogonal IM/FSK Labeled Signals EAM SOA that into

Endoscopic submucosal dissection and endoscopic mucosal resection for esophageal and gastric lesions:A comparison of procedures

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Laparoscopic, Endoscopic and Robotic Surgery 2024年第2期7卷 66-71页

作者： Gustav holm Schæbel Andreas Weise Mucha Charlotte Egeland Michael Patrick Achiam Department of Surgery and Transplantation Copenhagen University Hospital RigshospitaletBlegdamsvej 92100 CopenhagenDenmark

Objective Esophageal and gastric lesions are effectively managed with minimally invasive upper endoscopic procedures such as endoscopic mucosa resection(EMR)and endoscopic submucosal dissection(ESD),offering patients alternatives to invasive *** ESD is well established in Eastern Asia,its adoption in Denmark for superficial esophageal cancer is *** study presents real-world data on the feasibility,safety,and hospitalization duration associated with ESD and EMR for esophageal and gastric *** A retrospective analysis was conducted on patients who underwent ESD or EMR at a specialized center in Denmark from October 2016 to June *** on treatment,indication,lesion location,hospitalization duration,procedure duration,specimen size,complications,recurrence,and one-year overall survival were *** comparisons utilized the Mann-Whitney U test,independent sample median test,and chi-squared *** The study included 130 patients(144 procedures):72 underwent ESD and 58 underwent *** with EMR,ESD resulted in greater percentages of en bloc and R0 resections(98.8%vs.64.1%,prence rates were 14.5%for ESD and 23.8%for EMR(p=0.767).The one-year overall survival rates were similar between the groups(95.8%vs.94.8%,p=0.553).Conclusion Both ESD and EMR are safe and viable for treating esophageal and gastric *** offers advantages but requires more time and *** findings support the literature,emphasizing the importance of considering patient-specific factors and surgeon proficiency in selecting the appropriate procedure.

关键词： Endoscopic submucosal dissection Endoscopic mucosa resection Gastroesophageal cancer Real-world data

Constructing Three-Phase Capillary Pressure Functions by Parameter Matching Using a Modified Ensemble Kalman Filter

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Communications in Computational Physics 2009年第6期6卷 24-48页

作者： Randi holm Roland Kaufmann Elisabeth Iren Dale Sigurd Aanonsen Gunnar E.Fladmark Magne Espedal Arne Skauge Centre for Integrated Petroleum Research/University of Bergen P.O.Box 78005020 BergenNorway

Usually extended two-phase capillary pressures are used in three-phase simulations,because three-phase capillary pressures are not possible or hard to *** this work three-phase capillary pressure surfaces are created by at pore network *** input parameters to this network model are found by matching two-phase capillary pressure *** matching is done with a slightly modified EnKF *** with three-phase capillary pressures are created and used as input to flow simulations.

关键词： Ensemble Kalman Filter(EnKF) three-phase porous media flow capillary pressure parameter matching

The 2006 ICRP Recommendations of the International Commission on Radiological Protection

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The 2006 ICRP Recommendations of the International Commissio...

Iterative photonic processor for fast complexvalued matrix inversion

The Second Asian and Oceanic Congress for Radiation Protection

作者： Lars-Erik holm Chairman of ICRP Swedish Radiation Protection Authority 171 16 STOCKHOLM Sweden

The current recommendations of the International Commission on Radiological Protection （ICRP） were published in 1991. Since then, ICRP has published additional recommendations, and the system of protection has become increasingly complex. New scientific data have made it necessary to update the biological and physical assumptions underlying the recommendations. The Commission has decided to revise its recommendations while at the same time maintaining stability with the previous recommendations. The international consultation on the draft recommendations has involved health physics professionals all around the world. A revised draft was be put on ICRP’s website for consultation during the summer of 2006. When ICRP adopts its revised recommendations, 16 years would have passed since the 1990 recommendations were adopted.

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Photonics Research 2022年第11期10卷 2488-2501页

作者： MINJIA CHEN QIXIANG CHENG MASAFUMI AYATA MARK holm RICHARD PENTY Department of Engineering Centre for Photonic SystemsElectrical Engineering DivisionUniversity of CambridgeCambridge CB30FAUK Huawei Technologies(Sweden)AB 16440 KistaSweden

An N×N iterative photonic processor is proposed for the first time, we believe, for fast computation of complexvalued matrix inversion, a fundamental but computationally expensive linear algebra operation. Compared to traditional digital electronic processing, optical signal processing has a few unparalleled features that could enable higher representational efficiency and faster computing speed. The proposed processor is based on photonic integration platforms–the inclusion of Ⅲ-V gain blocks offers net neutral loss in the phase-sensitive loops. This is essential for the Richardson iteration method that is adopted in this paper for complex linear systems. Wavelength multiplexing can be used to significantly improve the processing efficiency, allowing the computation of multiple columns of the inverse matrix using a single processor core. Performances of the key building blocks are modeled and simulated, followed by a system-level analysis, which serves as a guideline for designing an N×N Richardson iteration processor. An inversion accuracy of>98%can be predicted for a 64×64 photonic processor with a>80times faster inversion rate than electronic processors. Including the power consumed by both active components and electronic circuits, the power efficiency of the proposed processor is estimated to be over an order of magnitude more energy-efficient than electronic processors. The proposed iterative photonic integrated processor provides a promising solution for future optical signal processing systems.

关键词： valued matrix iteration

A Systematic Review of Intuition—A Way of Knowing in Clinical Nursing?

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Open Journal of Nursing 2016年第5期6卷 412-425页

作者： Anne Lise holm Elisabeth Severinsson Department of Health Science Stord/Haugesund University College Stord Norway Centre for Women’s Family and Child Health Faculty of Health Sciences University College of Southeast Norway Kongsberg Norway

The aim of this systematic review was to illuminate intuition in clinical nursing. Frequently described as a defining characteristic of professional expertise, intuition is gaining acceptance as a legitimate form of knowledge in clinical nursing. A total of 352 abstracts were read and eight quantitative studies included. A thematic analysis was performed to one main theme, two themes, and four sub-themes emerged. The main theme was: Sensing an unconscious and conscious state of mind, and the two themes were: A sudden emotional awareness and reflection, and arousal of conscious thought processes. The first theme included two sub-themes: Sensing spiritual connections with patients and experiencing physical sensations;worrying and reassuring feelings. The second theme comprised two sub-themes: Willingness to act on personal, interpersonal, and clinical experiences;the influence of maturity and social support in clinical decision-making. An implication for clinical nursing was the need to develop sensitivity as a key to understanding the patient’s illness. In conclusion, leadership and management could facilitate discussions about intuition as a legitimate method of processing information and making decisions about patient care.

关键词： Clinical Nursing Conscious Emotional Awareness Knowledge Unconscious

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乡村旅游与小城镇发展

旅游学刊 2011年第12期26卷 5-7页

作者： Erik holm-Petersen Grontmijl Carl Bro咨询集团丹麦格洛斯楚普

在全世界，旅游业是发展最快的经济产业。本文探讨“乡村旅游”的本质及其对小城镇发展的作用。

关键词：小城镇发展乡村旅游城乡统筹旅游发展中国经济产业旅游业

Machine-learned interatomic potentials by active learning:amorphous and liquid hafnium dioxide

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npj Computational Materials 2020年第1期6卷 803-810页

作者： Ganesh Sivaraman Anand Narayanan Krishnamoorthy Matthias Baur Christian holm Marius Stan Gábor Csányi Chris Benmore Álvaro Vázquez-Mayagoitia Leadership Computing Facility Argonne National LaboratoryArgonneIL 60439USA Institute for Computational Physics Universität StuttgartAllmandring 3Stuttgart 70569Germany Helmholtz-Institute Münster:Ionics in Energy Storage(IEK-12) Forschungszentrum Jülich GmbHCorrensstrasse 46Münster 48149Germany Applied Materials Division Argonne National LaboratoryArgonneIL 60439USA Department of Engineering University of CambridgeTrumpington StreetCambridge CB21PZUK X-ray Science Division Argonne National LaboratoryArgonneIL 60439USA Computational Science Division Argonne National LaboratoryArgonneIL 60439USA

We propose an active learning scheme for automatically sampling a minimum number of uncorrelated configurations for fitting the Gaussian Approximation Potential(GAP).Our active learning scheme consists of an unsupervised machine learning(ML)scheme coupled with a Bayesian optimization technique that evaluates the GAP *** apply this scheme to a Hafnium dioxide(HfO2)dataset generated from a“melt-quench”ab initio molecular dynamics(AIMD)*** results show that the active learning scheme,with no prior knowledge of the dataset,is able to extract a configuration that reaches the required energy fit ***,molecular dynamics(MD)simulations performed using this active learned GAP model on 6144 atom systems of amorphous and liquid state elucidate the structural properties of HfO2 with near ab initio precision and quench rates(i.e.,1.0 K/ps)not accessible via *** melt and amorphous X-ray structural factors generated from our simulation are in good agreement with *** addition,the calculated diffusion constants are in good agreement with previous ab initio studies.

关键词： amorphous dioxide scheme