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مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

فارسی Version

Issue Info: 

  • Year: 

    2015

  • Volume: 

    46
Measures: 

  • Views: 

    132

  • Downloads: 

    79
Abstract: 

THE PURPOSE OF THIS PAPER IS THE STUDY OF HEMIVARIATIONAL INEQUALITIES WITH NEUMANN boundary CONDITION. OUR APPROACH IS BASED ON NONSMOOTH CRITICAL POINT THEOREM.

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Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

RASHIDINIA J. | BARATI F.

Issue Info: 

  • Year: 

    2011

  • Volume: 

    1

  • Issue: 

    1

  • Pages: 

    35-44
Measures: 

  • Citations: 

    2

  • Views: 

    377

  • Downloads: 

    171
Abstract: 

Please click on PDF to view the abstract.

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Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 

  • Year: 

    0

  • Volume: 

    34

  • Issue: 

    3

  • Pages: 

    79-92
Measures: 

  • Citations: 

    0

  • Views: 

    1846

  • Downloads: 

    0
Abstract: 

امروزه تعیین ژئوئید به صورت نقطه ای از تلفیق اطلاعات ترازیابی با GPS (ژئوئید (GPS/Leveling) به صورت گسترده مورد استفاده قرار گرفته است. در این مقاله از داده های ژئوئید GPS/Leveling به عنوان یک مقدار مرزی در کنار سایر مقادیر مرزی در مساله تعیین ژئوئید استفاده شده است. الگوریتم مورد استفاده در این روش را می توان در مراحل محاسباتی آن به صورت زیر خلاصه کرد: (1) حذف اثرات توپوگرافی جهانی و جرم های در فاصله دور از راه بسط هارمونیک های بیضوی تا درجه و مرتبه 360.360 به همراه میدان گریز از مرکز بیضوی از مشاهدات گرانی روی سطح زمین با استفاده از مختصات GPS نقاط. (2) حذف اثرات جرم های واقع در فاصله نزدیک از راه حل تحلیلی انتگرال نیوتن در دستگاه تصویر هم مساحت استوانه ای بیضوی مرجع، (3) تشکیل معادلات مربوط به انتقال به سمت پایین مشاهدات شتاب گرانی تصحیح شده طی مراحل 1 و 2 از سطح زمین به پتانسیل جاذبه روی بیضوی مرجع با استفاده از مختصات GPS نقاط محاسبه. (4) محاسبه ژئوئید GPS/Leveling. (5) تشکیل معادلات مربوط به تبدیل ارتفاع ژئوئید حاصل از مرحله 4 به پتانسیل جاذبه روی بیضوی مرجع از راه فرمول برونز بیضوی. (6) حل توام معادلات مربوط به مراحل 3 و 4 به منظور تعیین پتانسیل جاذبه روی بیضوی مرجع از راه کم ترین مربعات. (7) بازگرداندن اثرات حذف شده به پتانسیل جزیی حاصل از مرحله 6. (8) تبدیل پتانسیل حاصل از مرحله 7 به ارتفاع ژئوئید از راه فرمول برونز بیضوی. به منظور بررسی موردی روش ارایه شده، ژئوئید دقیق ایران بر مبنای مشاهدات گرانی و GPS/Leveling تعیین و نتایج آن ارایه شده است.

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Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

GOODRICH C.S.

Issue Info: 

  • Year: 

    2010

  • Volume: 

    5

  • Issue: 

    2

  • Pages: 

    195-216
Measures: 

  • Citations: 

    1

  • Views: 

    180

  • Downloads: 

    0
Keywords: 
Abstract: 

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Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

LI G.

Issue Info: 

  • Year: 

    2012

  • Volume: 

    2012

  • Issue: 

    91

  • Pages: 

    0-0
Measures: 

  • Citations: 

    1

  • Views: 

    133

  • Downloads: 

    0
Keywords: 
Abstract: 

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Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

فارسی Version

Writer: 

NEISY ABDOLSADEH

Issue Info: 

  • Year: 

    2012

  • Volume: 

    43
Measures: 

  • Views: 

    126

  • Downloads: 

    80
Abstract: 

IN THE FINANCIAL DERIVATIVE MARKETS, THE GREAT IMPORTANCE SHOULD BE GIVEN TO THE EVALUATION OF THE PRICING OF THE OPTIONS. DUE TO THIS, THE problem OF PRICING AMERICAN OPTIONS UNDER THE JUMP-DIFFUSION MODEL IS CONSIDERED. THEREFORE, FIRST, THE PRICING AMERICAN OPTIONS WAS SHOWN AS A FREE boundary value problem FOR A PARTIAL INTEGRO-DIFFERENTIAL EQUATION , THEN AN EFFICIENT NUMERICAL METHOD FOR SOLVING THE FREE boundary value problem IS DISCUSSED.

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Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

BROWN H.J. | WU T.F.

Issue Info: 

  • Year: 

    2007

  • Volume: 

    69

  • Issue: 

    -

  • Pages: 

    1-9
Measures: 

  • Citations: 

    1

  • Views: 

    142

  • Downloads: 

    0
Keywords: 
Abstract: 

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Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 

  • Year: 

    2024

  • Volume: 

    14

  • Issue: 

    2

  • Pages: 

    26-38
Measures: 

  • Citations: 

    0

  • Views: 

    15

  • Downloads: 

    0
Abstract: 

In this paper, by employing the variational method, we show that a boundary value problem of sixth order has infinitely many solutions. In fact, via a critical point theorem, we will present sufficient conditions such that the problem has a sequence of solutions in a suitable function space. Specific cases and an examples of results are also stated.

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Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

RASHIDINIA J.

Issue Info: 

  • Year: 

    2003

  • Volume: 

    14

  • Issue: 

    4

  • Pages: 

    23-33
Measures: 

  • Citations: 

    0

  • Views: 

    824

  • Downloads: 

    0
Abstract: 

A three point variable mesh finite difference method of third order, have been derived to solve the singular two-point boundary value problems. The method reduces to a method of order four for the uniform mesh case and may be considered as a modification of the well known Numerov"s method. The methods are self starting and are exact for y=1/x. The convergence of the fourth order method has also been discussed. The various measures of error for solution of two problems, using the methods and the fourth order method in [1] are listed. The numerical results are also compared with five well known classical methods to show the self starting and accuracy of the present methods. Subject Classifications: AMS 64L10, CR: G1.7

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Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

AMINI HARANDI A.

Issue Info: 

  • Year: 

    2013

  • Volume: 

    39

  • Issue: 

    1

  • Pages: 

    165-173
Measures: 

  • Citations: 

    0

  • Views: 

    401

  • Downloads: 

    128
Abstract: 

Here, using the fixed point theory in cone metric spaces, we prove the existence of a unique solution to a first-order ordinary differential equation with periodic boundary conditions in Banach spaces admitting the existence of a lower solution.

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Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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