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chinese Physics B 2015年第3期24卷 48-54页

作者： Ade Kurniawan A.Suparmi c.cari Physics Department Sebelas Maret University

An approximate solution of the Dirac equation for a spin-1/2 particle under the influence of q-deformed hyperbolic P ¨oschl–Teller potential combined with trigonometric Scarf II non-central potential is studied analytically. It is assumed that the scalar potential equals the vector potential in order to obtain analytical solutions. Both radial and angular parts of the Dirac equation are solved using the Nikiforov–Uvarov method. A relativistic energy spectrum and the relation between quantum numbers can be obtained using this method. Several quantum wave functions corresponding to several states are also presented in terms of the Jacobi Polynomials.

关键词： Dirac equation q-deformed hyperbolic function Poschl–Teller potential trigonometric Scarf II potential

Exact solution of Dirac equation for Scarf potential with new tensor coupling potential for spin and pseudospin symmetries using Romanovski polynomials

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chinese Physics B 2014年第9期23卷 71-80页

作者： A.Suparmi c.cari U.A.Deta Physics Department Faculty of Mathematics and Natural ScienceSebelas Maret University Department of Physics Faculty of Mathematics and Natural ScienceState University of Surabaya

The bound state solutions of Dirac equations for a trigonometric Scarf potential with a new tensor potential under spin and pseudospin symmetry limits are investigated using Romanovski polynomials. The proposed new tensor potential is inspired by superpotential form in supersymmetric （SUSY） quantum mechanics. The Dirac equations with trigonometric Scarf potential coupled by a new tensor potential for the pseudospin and spin symmetries reduce to Schrtdinger-type equations with a shape invariant potential since the proposed new tensor potential is similar to the superpotential of trigonometric Scarf potential. The relativistic wave functions are exactly obtained in terms of Romanovski polynomials and the relativistic energy equations are also exactly obtained in the approximation scheme of centrifugal term. The new tensor potential removes the degeneracies both for pseudospin and spin symmetries.

关键词： Scarf potential new tensor potential spin and pseudospin symmetries Romanovski polynomials

Solution of Dirac equation for Eckart potential and trigonometric Manning Rosen potential using asymptotic iteration method

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chinese Physics B 2016年第1期25卷 428-435页

作者： resita arum sari a suparmi c.cari Physics Department Sebelas Maret UniversityJ1.Ir.Sutami 36A Kentingan Surakarta 57126Indonesia

The Dirac equation for Eckart potential and trigonometric Manning Rosen potential with exact spin symmetry is obtained using an asymptotic iteration method. The combination of the two potentials is substituted into the Dirac equation, then the variables are separated into radial and angular parts. The Dirac equation is solved by using an asymptotic iteration method that can reduce the second order differential equation into a differential equation with substitution variables of hypergeometry type. The relativistic energy is calculated using Matlab 2011. This study is limited to the case of spin symmetry. With the asymptotic iteration method, the energy spectra of the relativistic equations and equations of orbital quantum number l can be obtained, where both are interrelated between quantum numbers. The energy spectrum is also numerically solved using the Matlab software, where the increase in the radial quantum number nr causes the energy to decrease. The radial part and the angular part of the wave function are defined as hypergeometry functions and visualized with Matlab 2011. The results show that the disturbance of a combination of the Eckart potential and trigonometric Manning Rosen potential can change the radial part and the angular part of the wave function.

关键词： Dirac equation Eckart potential trigonometric Manning Rosen potential spin symmetric

Human impact gradients via anthropogenic pollen indicators:insights gleaned from a case study in the Rif Mountains(Northern Morocco)

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Journal of Mountain Science 2024年第12期21卷 4223-4235页

作者： Aboubakr BOUTAHAR Paloma cariñanos GONZALEZ Zouhaire LAMRANI Abderrahmane MERZOUKI Biology Ecologyand Health LaboratoryDepartment of BiologyFaculty of Sciences of TetouanAbdelmalek Essaâdi UniversityTetouan 93002Morocco Department of Botany Faculty of PharmacyUniversity of GranadaGranada 18071Spain Andalusian Institute for Earth System Research(IISTA-cEAMA) University of GranadaGranada 18100Spain Biology Environmentand Sustainable Development LaboratoryENSAbdelmalek Essaadi UniversityTetouan 93000Morocco cANN-MED&BALDIYA cROPS SARL Tangier 90010Morocco

Understanding the relationship between modern pollen and vegetation is crucial for interpreting fossil pollen records and assessing human impact on the environment,both of which are essential for effective environmental management *** numerous studies on fossil pollen records in the Rif landscape,research specifically focusing on modern pollen and its implications for understanding human impact on the natural landscape is notably *** paper presents novel anthropogenic pollen indicators for the Rif Mountains and seeks to evaluate the gradients of human impact on the southern Mediterranean *** employed a combination of modern pollen analysis,vegetation survey,and ordination techniques,incorporating various environmental and land-use *** correspondence analysis(ccA)allowed us to evaluate the relationships between pollen types and environmental variables,helping us identify key anthropogenic pollen indicators associated with land use and human activities:Poaceae,cannabist,Olea-t,and Asteraceae for cultivation;Brassicaceae,Genista-t,Poaceae,Asteraceae and Plantago-t,for grazing;Apiaceae,Urtica-t and Genista-t for slashing and ***,an anthropogenic index score(AIS)was calculated for each sampled *** analysis(cA)was then used to correlate each specific pollen type with levels of human impact as follows(a)low(e.g.,cedrus atlantica-t,Quercus canariensis-t),(b)moderate(e.g.,Erica-t,Arbutus unedo-t,Eucalyptus-t),and(c)high(e.g.,cannabis-t,Brassicaceae,Olea-t,Nicotiana-t).This paper enhances our comprehension of land-use dynamics and impact levels,providing essential insights for evaluating anthropogenic impact trends and human-induced changes in the Rif Mountains landscape.

关键词： Modern Pollen analysis Rif mountains Pollen indicators Human impact Northern Morocco Anthropogenic index score

A comparison of financial and operational efficiency between smart and traditional insufflation for laparoscopic surgery: A granular analysis

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Laparoscopic, Endoscopic and Robotic Surgery 2023年第3期6卷 97-102页

作者： Aazad Abbas Imran Saleh Graeme Hoit Gurjovan Sahi Sam Park Jihad Abouali cari Whyne Jay Toor Division of Orthopaedic Surgery University of Toronto149 College Street Room 508-ATorontoONM5T 1P5Canada Orthopaedic Biomechanics Lab Sunnybrook Research Institute2075 Bayview AvenueTorontoONCanada Department of Mechanical and Industrial Engineering University of Toronto5 King's College RoadTorontoONM5S 3G8Canada Faculty of Medicine University of Toronto1 King's College CircleTorontoONM5S 1A8Canada University of Toronto Orthopaedics Sports Medicine Women's College Hospital76 Grenville StTorontoONCanada Division of Orthopaedic Surgery Michael Garron Hospital825 Coxwell AvenueTorontoONM4C 3E7Canada Division of Orthopaedic Surgery Sunnybrook Health Science Centre2075 Bayview AvenueTorontoONCanada Department of Orthopaedic Surgery University of Manitoba820 Sherbrook StreetWinnipegMBCanada

Objective:Smart insufflation(SI)techniques relying on valve and membrane-free insufflation are increasing in *** considerable literature exists demonstrating the benefits of SI on procedural ease and patient outcomes,there remains a paucity describing the financial impact of these *** purpose of this study was to determine the financial and efficiency impact of these devices on the operating room and inpatient wards of a ***:A discrete event simulation model representing a typical mid-sized North American hospital comparing SI to traditional insufflation(TI)was *** National Surgical Quality Improvement database from 2015 to 2019 was used to populate the model with data supplemented from the *** included length of stay(LOS),duration of surgery(DOS),annual procedure volume,profit,return on investment(ROI),and gross profit margin(GPM).From the literature review,DOS savings were 10e32 minutes/case,while LOS savings were 0e3 days/***:Implementation of an SI led to an increase in annual throughput of 42e346(4.4%e36.6%)cases for all procedures and 38 to 297(4.3%e33.3%)cases for complex *** was found to be decreased by 175e614(18.3%e64.2%)days for all procedures and 231 to 614(35.6%e77.9%)cases for complex procedures with the implementation of an ***,this resulted in an increase in net profit of$104,685 per *** ROI of SI over the TI device was>1000%,and the GPM for the TI was 90.0%,while the GPM for the SI was 71.7%.conclusion:Despite the initial financial investment being greater,the implementation of SI offsets these expenses and yields significant financial *** study demonstrates the financial benefits of SI over TI and illustrates how granular operational and financial analyses of technologies are essential to aid in sound healthcare procurement decision making.

关键词： Insufflation Airseal Surgical efficiency Financial impact

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价值演变与美国国家公园体系的发展

中国园林 2018年第11期34卷 10-14页

作者：凯莉.高切丝若兰.米切尔布兰登.布兰特毕雪婷李璟昱美国乔治亚大学文化景观实验室美国国家公园管理局奥姆斯特德景观保护中心美国国家公园管理局华盛顿D.c.国家遗产区同济大学建筑与城市规划学院

作为设立最早且最知名的公园系统之一,美国国家公园体系对世界各国公园系统的发展具有全球性影响,但人们对美国国家公园体系的认识往往局限于美国西部的大型公园。事实上,美国第一批设立的国家公园深受19世纪风景如画的大型城市公园影响... 详细信息

作为设立最早且最知名的公园系统之一,美国国家公园体系对世界各国公园系统的发展具有全球性影响,但人们对美国国家公园体系的认识往往局限于美国西部的大型公园。事实上,美国第一批设立的国家公园深受19世纪风景如画的大型城市公园影响,其后的国家公园类型却随着社会价值观的演变而改变。通过考察美国国家公园体系的发展历程,以文化景观的概念诠释了自19世纪末以来的景观价值演变以及对当今创新保护战略的贡献。在美国国家公园体系的发展过程中,国际交流在促进文化和自然之间的关联性理解及其有效保护中起到了关键性作用。

关键词：风景园林美国国家公园管理局(NPS) 美国国家公园体系文化景观景观价值文化和自然之间的相互联系