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Article
Design of Free – Form Planar Closed Curves Using Four Point Interpolation

Authors: Wissam K.H. --- Hussam L. Alwan --- Bushra B. Abd Alhassan
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2008 Volume: 26 Issue: 8 Pages: 976-985
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

It is desirable to construct a free-form closed curve, since large numbers ofmechanical elements follow these curves. In this work we present a parametricinterpolation for construction a free form closed curves using four point interpolationtechnique. The problems and solutions approach for closing open or disjoint curves isdemonstrated taking C1 continuity as a criterion for the solution of these problems.When the coordinates of any number of control points are introduced, the proposedalgorithm constructs and closed the intended curve. The designer is free to vary andmanipulate these control points to change the shape of the desired curve.

العديد من الاجزاء الميكانيكية التي يتم وصفها بواسطة المنحنيات الحرة المغلقة . في هذة الدراسةتم استخدام طريقة الاستكمال رباعي النقاط لتصميم المنحنيات الحرة المغلقة. تم اعتماد الاستمرارية منكمعيار لغلق المنحنيات المفتوحة وكحل لمشكلة عدم ارتباط هذة المنحنيات . تم اعداد (C نوع ( 1خوارزمية لرسم اي منحني ولاي عدد من النقاط وغلق هذة المنحنيات بمعلومية احداثيات النقاط المكونةللمنحني. تتيح هذة الطريقة للمصمم الحرية بتغير ومناقلة النقاط المكونة للمنحني للتغيير والتحكم بشكلالمنحني.


Article
Developed Equation For Fitting ASTM Distillation Curves

Author: Dr. Khalid Farhod Chasib
Journal: Journal of Petroleum Research & Studies مجلة البحوث والدراسات النفطية ISSN: 22205381 Year: 2011 Volume: 278 Issue: 4th Pages: 215-231
Publisher: Ministry of Oil وزارة النفط

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Abstract

The present work deals with fitting literature data of ASTM Distillation curves and obtain a new correlation suitable to use in modeling when optimizing the refining processes, such as distillation, FCC, catalytic reforming, hydrotreating, etc. The results showed that the values predicted by a new correlation are very good agreement with data of literature and the range of mean overall deviation (%MOD) is (0.305-0.585).


Article
On the Embedding of an Arc Into a Cubic Curves in a Finite Projective Plane of Order Five

Authors: Raad I. K. AL-Humaidi --- Najm A. M. AL-Seraji
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2018 Volume: 59 Issue: 3A Pages: 1285-1300
Publisher: Baghdad University جامعة بغداد

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Abstract

The main aims of this research is to find the stabilizer groups of a cubic curves over a finite field of order 5, studying the properties of their groups and then constructing the arcs of degree 2 which are embedding in a cubic curves of even size which are considering as the arcs of degree 3. Also drawing all these arcs.


Article
Cubic arcs in the projective plane over a finite field of order 16

Authors: Najm A. M. AL-Seraji --- Hamza L. M. Ajaj
Journal: Iraqi Journal of Science المجلة العراقية للعلوم ISSN: 00672904/23121637 Year: 2018 Volume: 59 Issue: 3B Pages: 1453-1479
Publisher: Baghdad University جامعة بغداد

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Abstract

The main aims purpose of this study is to find the stabilizer groups of a cubic curves over a finite field of order 16, also studying the properties of their groups, and then constructing all different cubic curves, and known which one of them is complete or not. The arcs of degree 2 which are embedding into a cubic curves of even size have been constructed.


Article
On the Embedding of an Arc into Cubic Curves in a Finite Projective Plane of Order Seven

Authors: Najm A. M. AL-Seraji --- Raad I. K. AL-Humaidi
Journal: Al-Mustansiriyah Journal of Science مجلة علوم المستنصرية ISSN: 1814635X Year: 2019 Volume: 30 Issue: 1 Pages: 158-168
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The main aims of this research are to find the stabilizer groups of cubic curves over a finite field of order 7 and studying the properties of their groups and then constructing the arcs of degree 2 which are embedding in cubic curves of even size which are considering as the arcs of degree 3. Also drawing all these arcs.

الاهداف الرئيسية لهذا البحث هو ايجاد الزمر المثبتة للمنحنيات المكعبة حول الحقل المنتهي من الرتبة7 ودراسة الخواص لهذه الزمر وكذلك تشكيل الاقواس من الدرجة الثانية والتي تغمر في المنحنيات المكعبة ذات الحجم الزوجي والتي نفسها تعتبر كأقواس من الدرجة الثانية . كذلك رسم كل هذه الأقواس.


Article
The Effect of Dust on Global Ultraviolet Solar Radiation in the Range ( 0.290 – 0.385 μm ) Reach Basrah City 30.5oN
( 0.290 – 0.385 μm ) Reach Basrah City 30.5oN

Author: H. A. AL- Eidane حســين علي خضر العيداني
Journal: Journal of Basrah Researches (Sciences) مجلة ابحاث البصرة ( العلميات) ISSN: 18172695 Year: 2009 Volume: 35 Issue: 2A Pages: 1-5
Publisher: Basrah University جامعة البصرة

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Abstract

In this paper, The global ultraviolet radiation was measured and recorded on an hourly basis in Basrah (latitude 30.5oN, longitude 47.5o E) during the period 1999 / 2000. The global ultraviolet radiation (U.V) was measured by an Epply ultraviolet radiation (photometer) (0.290 – 0.385um)[1]. Intensity variation of global daily ultraviolet radiation throughout the year and the effect of dust on daily total ultraviolet radiation were investigated. It was found that the highest ultraviolet radiation levels are received during June and that the daily total ultraviolet is approximately lower by 28.07% during dusty days. From measurements carried out, it was found that, on average, 3.05% of the monthly – daily global radiation received is ultraviolet radiation

في هذا البحث ، قيست وسجٌلت الأشعة فوق البنفسجية الساعية الواصلة لمدينة البصرة ( خط طول 30.5o شمالاً ، 47.5o شرقاً ) خلال الفترة بين 1999 و2000 بواسطة جهاز ( Epply ultraviolet radiation (photometerللطول الموجي mμ 0.290 – 0.385 ) . وجد ان اختلاف شدة الاشعة فوق البنفسجية الواصلة يومياً وخلال السنة تثأثر بالغبار خلال اليوم . اذ وجد ان اكبر قيمة للاشعة فوق البنفسجية تصل الى الارض في شهر حزيران وتتأثر بالغبار حيث تصل تقريباً نسبة 28.07% باليومة الواحد ، كما قيس معدل الاشعة بتأثير الغبار خلال الشهر وتصل الى 3.05% منها.


Article
On Non-Singular Plane Cubic Curves Over

Author: Emad Bakr Al-Zangana عواد بكر عبذ الكريم
Journal: Journal of College of Education مجلة كلية التربية ISSN: 18120380 Year: 2013 Issue: 1 Pages: 149-160
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

In this paper, the number of non-singular plane cubic curves over the finite fields is determined in both complete and incomplete cases, and the maximum size of a complete arc of degree three that can be constructed from each incomplete arc are found.


Article
Generation of Rainfall Intensity Duration Curves Using Disaggregation Technique

Author: Qassem H. Jalut قاسم حميد جلعوط
Journal: DIYALA JOURNAL OF ENGINEERING SCIENCES مجلة ديالى للعلوم الهندسية ISSN: 19998716/26166909 Year: 2018 Volume: 11 Issue: 2 Pages: 49-54
Publisher: Diyala University جامعة ديالى

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Abstract

The rainfall intensity-duration-frequency (IDF) relationship is a relationship between rainfall duration, rainfall intensity and storm return period generally required for outlining of various hydraulic structures such as dams, Culverts, Siphons etc. Evaluation of rainfall extreme expected values, as used in intensity-duration-frequency (IDF) relationship, has long been a major interest of both theoretical and applied studies in surface hydrology. The IDF relationship is resolved through factual investigation of tests of records from a given meteorological stations cover the study region. For the present study, information from the verifiable arrangement of most extreme month to month precipitation acquired from a pluviometric Kirkuk station were utilized. They were made accessible by the Ministry of Water Resources. Thirty seven outrageous occasions were gotten from the record from years of 1971 to 2010. Considering that the sample is representative of the genesis of the intense rainfalls of the studied region and that the probability of the events follows distribution of extremes Type I (Gumbel distribution). Many stations do not have long information records for lengths shorter than 1 day and in this way the character of short precipitation lengths must be evaluated from different sources. The fundamental focus point of this paper is to build IDF curves for the area utilizing precipitation recurrence investigation procedures utilizing new disaggregation strategy method. Different durations ranging from 5 minutes to 24 hours for return periods of 5, 10, 50, and 100 years were analyzed


Article
A New Steganography Approach depending on Isolation Curve in Digital Images.
طريقة جديدة لإخفاء البيانات في الصور الرقمية بالاعتماد على الفجوات الناتجة من تذبذب منحنى

Author: Hala Bahjat Abdul Wahab هاله بهجت عبد الوهاب
Journal: Journal of university of Anbar for Pure science مجلة جامعة الانبار للعلوم الصرفة ISSN: ISSN: 19918941 Year: 2009 Volume: 3 Issue: 1 Pages: 161-167
Publisher: University of Anbar جامعة الانبار

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Abstract

result, protecting the whole document from being regenerated by any counterfeiting person. The main goal of this paper is combining the curve security concepts with information hiding techniques in order to increase the capabilities of steganography techniques. This paper produced a new data hiding approach for embedded data (text or image …etc) in a digital image by using the gaps locations that generated between curves points, which has isolated parametric curve. Parameterization techniques are greatly affects on curve shape and adds a security features that difficult predict by any counterfeiter. The proposed algorithm will be increased Variable Incremental Growth that rises in parametric Lagrange curve in order to reach robust method for hiding data in digital images. The proposed method was implemented on different sizes of digital images and the results of the proposed

أمنية المنحنى تساهم في عملية حماية شكل المنحنى من اعادة توليده وكنتيجه لهذا يتم حماية المستند من محاولة توليده عن طريقالمهاجم . الهدف الرئيسي لهذا البحث هو دمج بين مفاهيم سرية المنحنى وتقنيات الاخفاءوذلك لزيادة امكانيات اخفاء المعلومات وتقنياته .البحث يقدم طريقة جديدة لطمر المعلومات ( نص او صوره ... الخ) في صوره رقمية من خلال استخدام مواقع الفجوات المتولده بين نقاطمنحنى المتذبذب كمواقع لاخفاء المعلومات داخل الصوره الرقمية . تقنيات البارامترات تؤثر بشكل واسع وكبير على شكل المنحنى وتضيفخصائص تصعب تخمينها من قبل المهاجم. الخوارزمية المقترحة تعمل على زيادة حجم الفجوات التي تظهر في منحنى لاكرانج لغرضالوصول الى طريقة قوية في اخفاء المعلومات في الصور الرقمية , الطريقة المقترحة استخدمت صور رقمية باحجام مختلفه وكانت النتائججيده ومشجعه حسب المقايسس والفحوصات المعتمدة


Article
ELLIPTIC CURVES PUBLIC KEY TRAITOR TRACING SCHEME
طريقة إقتفاء الخائن ذات المفتاح المعلن باستخدام المنحنيات الاهليلجية

Author: Ali M. Sagheer علي مكي صغير
Journal: Journal of university of Anbar for Pure science مجلة جامعة الانبار للعلوم الصرفة ISSN: ISSN: 19918941 Year: 2008 Volume: 2 Issue: 1 Pages: 106-115
Publisher: University of Anbar جامعة الانبار

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Abstract

In this paper we use the elliptic curves system in the Public Key Traitor Tracing Scheme. The Elliptic Curve points form Abelian group that used in the Public Key Traitor Tracing Scheme. The main advantage of elliptic curves systems is thus their high cryptographic strength relative to the size of the key. We design and implement an elliptic curves public key encryption scheme, in which there is one public encryption key, but many private decryption keys which are distribute through a broadcast channel, the security of the elliptic curves public key encryption scheme based on the Elliptic Curves Decisional Diffie Hellman(ECDDH) problem that is analogous to Decisional Diffie Hellman(DDH) problem, but it is more intractable than DDH problem.

الخلاصة:في هذا البحث لقد استعملنا نظام المنحنيات الاهليلجية في طريقة إقتفاء الخائن ذات المفتاح المعلن. حيثان نقاط المنحني الإهليلجي تشكل زمرة ابيلية تستخدم في طريقة إقتفاء الخائن ذات المفتاح المعلن. ان الفائدةالرئيسية لأنظمة المنحنيات الإهليليجية هو ان قوة التشفير بها عالية مقارنة بحجم المفتاح. في هذه البحثصممنا ونفذنا نظام تشفير ذو المفتاح المعلن باستخدام المنحنيات الإهليليجية ،ِ الذي يستخدم فيه مفتاح معلنواحد للتشفير، لكن العديد من مفاتيح الحل الخاصة التي توزع خلال قنوات الارسال، ان أمنية نظام تشفير ذولكن ،DDH التي تماثل مسالة ECDDH المفتاح المعلن باستخدام المنحنيات الإهليليجية تعتمد على مسالة.DDH أكثر تعقيد من مسالة ECDDH مسالة

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