The main goal of this paper is to show that a
-arc in
and
is subset of a twisted cubic, that is, a normal rational curve. The maximum size of an arc in a projective space or equivalently the maximum length of a maximum distance separable linear code are classified. It is then shown that this maximum is
for all dimensions up to
.
Carbon monoxide (CO) plays an important indirect greenhouse gases due to its influences on the budgets of hydroxyl radicals (OH) and Ozone (O3). The atmospheric carbon monoxide (CO) observations can only be made on global and continental scales by remote sensing instruments situated in space. One of instrument is the Measurements of Pollution in the Troposphere (MOPITT), which is designed to measure troposphere CO and CH4 by use of a nadir-viewing geometry and was launched aboard the Earth Observing System (EOS) Terra spacecraft on 18 December 1999. Results from the analysis of the retrieved monthly (1ºх1º) spatial grid resolution, from the MOPITT data were utilized to analyze the distribution of CO surface mixing ratio in Iraq for th
... Show MoreMonthly rainfall data of Baghdad meteorological station were taken to study the time behavior of these data series. Significant fluctuation,very slight increasing trend and significant seasonality were noticed. Several ARIMA models were tested and the best one were checked for the adequacy. It is found that the SEASONAL ARIMA model of the orders SARIMA(2,1,3)x(0,1,1) is the best model where the residual of this model exhibits white noise property, uncorrelateness and they are normally distributed. According to this model, rainfall forecast for four years was also achieved and showing similar trend and extent of the original data.
The purpose of this paper is to prove the following result : Let R be a 2-torsion free prime *-ring , U a square closed *-Lie ideal, and let T: RR be an additive mapping. Suppose that 3T(xyx) = T(x) y*x* + x*T(y)x* + x*y*T(x) and x*T(xy+yx)x* = x*T(y)x*2 + x*2T(y)x* holds for all pairs x, y U , and T(u) U, for all uU, then T is a reverse *-centralizer.
This research includes the study of the harsh environment areas in which engineers and workers operate in drilling oil wells, and their own characteristics in terms of nature and the climate and other surrounding factors, that negatively large amount affect on all the staff, present in comparison with other lands, so the study showed the preparations administrative and methodology that must be taken to confront the problems that may arise or for the purpose of avoiding. One of these things should be addressed is the process of adaptation of the staff live in the remote desert land and under difficult living conditions. The study also demonstrated all kinds of diseases and ill health which afflict the staff due to climatic conditions that
... Show MoreA session is a period of time linked to a user, which is initiated when he/she arrives at a web application and it ends when his/her browser is closed or after a certain time of inactivity. Attackers can hijack a user's session by exploiting session management vulnerabilities by means of session fixation and cross-site request forgery attacks.
Very often, session IDs are not only identification tokens, but also authenticators. This means that upon login, users are authenticated based on their credentials (e.g., usernames/passwords or digital certificates) and issued session IDs that will effectively serve as temporary static passwords for accessing their sessions. This makes session IDs a very appealing target for attackers. In many c
PM3 and DFT (6-311G/ B3LYP) level calculations were carried out for the 5Radialene molecule, which is exhibit D5h symmetry. The obtained equilibrium geometry was applied for the calculation of all 3N−6 vibration frequencies, and for the analysis of its normal coordinates and symmetry species, in addition to some physical properties such as heat of formation, total energy, dipole moment and energy difference of HOMO and LUMO levels (ΔELUMO-HOMO), using Gaussian-03 program. The so calculated frequencies according to DFT (6-311G/ B3LYP) fall in the ranges;
CH2 str. (3016-3098 cm-1), C=C str. (1662-1709cm-1), ring (C-C str.) (1268-1464 cm-1). δCH2 (890-1317cm-1), (δCCC) (562-631cm-1), γCH2 (738-946cm-1) and γring (γCCC) (
An oil spillage has been a great threat to human life in parts of Koya district, especially through the contamination of domestic water. An attempt was made to find and map the extent of pollution in the area. According to a field survey, more than 17 springs and 34 hand-dug and artesian wells have been contaminated with crude oil. The contamination was recorded recently after loading began of tens of oil tankers in the Taq-Taq oil field, and as a result hundred barrels of oil have spilled into the creeks and soil daily. Hence, 2D resistivity imaging was adopted via four laid-out traverses running normal to the strike of the outcrops. A Wenner-Schlumberger array configuration was used to achieve both vertical and lateral resistivity dist
... Show MoreIn this paper, the single scatter model for gamma backscatter densitometer has been used to investigate the materials of Halley’s nucleus. Monte Carlo simulation tool is used for the evaluation and calibration of gamma backscatter densitometer; and also used to calculate the bulk density. A set of parameters effecting detected count rate of γ – ray backscattering, mainly the source energy, the source – detector separation (sonde length), density and composition, were calculated.
Results obtained with the present method are compared with experimental data and the computed data may be considered entirely satisfactory.
This research focuses on the removal and adsorption of Fe (III) ion using a low cost commercial polyacrylic acid hydrogel beads as adsorbent. The effects of time, initial concentration and pH on the metal ion adsorption capacity were investigated. The regeneration of the hydrogel bead and recovery of the metal ion adsorbed were study. The adsorption isotherm models were applied on experimental data and it is shown that the Langmuir model was the best one for Fe (III) ion removal. The maximum capacity was calculated. First-order and second- order kinetic models were used and it is shown that the experimental data was in reliable compliance with the first- order model with R2 value of (0.9935, 0.9011, 0.9695, 0.9912) for all concentrations
... Show Moreفي هذا البحث يتم التركيز في رصد التطور في تكوين المفردات في اللغة الروسية الحديثة وذلك للأسماء المعجمية والدلالة والأسماء الحديثة، التي تستخدم في الغالب في صيغة الجمع (بلوراليا تانتوم) ويتم استخدام المواد البحثية من كتاب (قاموس الكلمات الجديدة). ومن خلال التحليل تبين أنَّ عملية ظهور الكلمات والاسماء (بلوراليا تانتوم)، تستخدم اساسا في حالة الجمع ، ويمكن اعتبارها اسماء نشطة واستمرارية حيث من
... Show Moreيرمي هذا البحث إلى معرفة اثر أنموذج حمدي في اكتساب المفاهيم و التربية في مادة طرائق التدريس و لتحقيق ذلك الغرض اعتمدت الباحثة على التصميم التجريبي ذو الضبط الجزئي و هو تصميم المجموعة التجريبية و المجموعة الضابطة ذات الاختبار البعدي و اختارت الباحثة طلبات الرابع الإعدادي للعام الدراسي 2011-2012و ذلك لغرض تطبيق التجربة و تكونت العينة من70 طالبة . كافأت الباحثة طلاب مجموعة البحث قبل البدا بالتجربة في
... Show Moreدفع الباحثة إلى القيام بهذهِ الدراسة وإتمام هذا البحث. وفي ضوء ما تقدم تحددت أهداف البحث الحالي التعرف بـ:
- مستوى الأمن الاجتماعي لدى المعلمين والمعلمات من خلال تبني الباحثة مقياس أعد من قبل الطائي، 2006 لهذا الغرض.
- مستوى المسؤولية الاجتماعية لدى المعلمين والمعلمات من خلال تبني الباحثة مقياس أعده الطائي، 2006لهذا الغرض.
- العلاقة الارتباطية بين الأمن الاجتماعي والمسؤولية
تتعلق الكفاءة الإدارية بقدرة مديري المدارس على إنشاء بيئة تعليمية ودية ومنتجة للمعلمين، مما يؤثر على أداء عملهم. تناولت هذه الدراسة العلاقة بين الفعالية الإدارية لمديري المدارس والأداء الوظيفي للمعلمين. تم استخدام تصميم البحث الوصفي لنوع المسح في هذا البحث. خدم 520 مشاركا كعينة لهذه الدراسة. والاستبيان المستخدم تم تطويره بواسطة الباحث بمعامل موثوقية 0.83. تم استخدام النسبة المئوية للإجابة على سؤال البحث المط
... Show Moreوفقا ل (سبمسون 2004:6) فان علم الأصوات هو دراسة أصوات الكلام التي تنقل نغمة المعنى وتوصيل المعنى في مواقف سياقية معينة فان التنغيم هو التنوع في نبرة الصوت أثناء الكلام. تم اختيار الفيلمين ملفيسنت والسيدة داوتفاير.لإظهار التنغيم بشكل مختلف. تظهر النغمة في كلا الفيلمين معان مختلفة في مواقف مختلفة. كل فيلم له نوعه ونوع التشويق الخاص به لذلك يتم قياس التنغيم باستخدام برنامج (برات) الذي يصف درجة الصوت بشكل دقيق في ا
... Show Moreيُعدُّ القضاء رمزاً لسيادة الأمة واستقلاليتها ، وهو يعبر عن الحق والعدل ، ويدلُّ على عنوان مجد الأمة وتطورها ، والدرجة التي وصلت إليها ، وهو يدلَّ على أشكال الدول والحكومات ، والقضاء هو المعيار الدقيق والحاكم للحكم على الحاكم والقادة والمسؤوليات ، وبالعدل قامت السماوات والأرض ، وهو أساس العمران وهو أفضل مظهر يتمثل فيه العدل الذي جعله أرسطو قوام العالم، وهو أساس الملك ، ودعامة الاستنبات والاستقرار الأنظمة
... Show MoreMethotrexate (MTX), a folate antagonist agent, is mainly used in treatment of
malignant tumors and autoimmune diseases. The present study was undertaken to
determine whether antioxidant vitamin (vitamin A) could ameliorate methotrexateinduced
oxidative stress in male rabbits. Twenty male rabbits were randomly
assigned into four groups. Group 1: control group, Group 2: MTX-treated group
(received 20 mg/kg MTX intraperitoneally), Group 3: Vit.A treated group received
5000 IU Vit.A orally) and Group 4: MTX+Vit.A treated group received MTX 20
mg/kg plus 5000 IU vit.A). After 4 weeks of treatment, blood samples were
collected by cardiac puncture to determine the serum malondialdehyde (MDA), as a
good indicator for l
Let A, and N are a semiring ,and a left A- semimodule, respectively. In this work we will discuss two cases:
- The direct summand of π-projective semi module is π-projective, while the direct sum of two π-projective semimodules in general is not π-projective . The details of the proof will be given.
- We will give a condition under which the direct sum of two π-projective semi modules is π-projective, as well as we also set conditions under which π-projective semi modules are projective.
The aim of this paper is the study of the influence of magnetic field on unsteady
flow of the second-grade fluid with constant viscosity. The equations which
controlled this type of fluid flow are complicated, so finding an analytical solution is
not easy, because it is a system of partial differential equations.We obtained an
expression for the velocity by using homotopy analysis method HAM.
It is found that the equations motion are controlled by many dimensionless
parameter, namely magnetic field parameter M and material constant α,
dimensionless film thickness β and unsteadiness parameter S.We have been studied
the influence of all the physical parameters, that mentioned above on the velocity
field, also a
Language has a significant contribution to the exchange of knowledge. Scholars examine different uses of language to find out its effect and role in several domains of society such as media, criticisms, politics, and related fields. Discourse analysis is connected with the use of both spoken and written language. It supports in analyzing how users say things, their effect on the audience, and how it influences society, or the way society affects communication. This mixed-mode research aims to provide a systemic analysis on how oppressed masses use signs and symbols through different social media platforms such as Facebook, WhatsApp, Twitter, and Instagram to encourage teachers to protest and achieve parents’ support to prevent their ch
... Show MoreThe research included studying a group of eight cuneiform texts dating back to the Old Babylonian era, specifically to the reign of King Larsa Rim-Sin, which were identified through studying the historical versions of these texts. These texts are confiscated, i.e. texts of unknown location, because they did not come through excavations, but rather came to the Iraqi Museum either by people who obtained them through digging, or stolen and smuggled texts that are retrieved by the General Authority for Antiquities; as is the case with our texts that were found smuggled to Jordan and were retrieved by the General Authority for Antiquities.
Membrane manufacturing system was operated using dry/wet phase inversion process. A sample of hollow fiber membrane was prepared using (17% wt PVC) polyvinyl chloride as membrane material and N, N Dimethylacetamide (DMAC) as solvent in the first run and the second run was made using (DMAC/Acetone) of ratio 3.4 w/w. Scanning electron microscope (SEM) was used to predict the structure and dimensions of hollow fiber membranes prepared. The ultrafiltration experiments were performed using soluble polymeric solute poly ethylene glycol (PEG) of molecular weight (20000 Dalton) 800 ppm solution 25 °C temperature and 1 bar pressure. The experimental results show that pure water permeation increased from 25.7 to 32.2 (L/m2.h.bar) by adding a
... Show Moreتزخر إمارة الشارقة بتاريخ حضاري وثقافي كبير، استمدّتها من القيادة الرشيدة- صاحب السمو الشيخ الدكتور سلطان بن محمد القاسمي- وذلك من خلال إشرافه المباشر بإعادة إحياء المواقع التاريخية للحفاظ على الإرث التاريخي والثقافي، وتوّج هذا الاهتمام بإنشاء هيئة مستقلّة تهتم بالآثار لحمايتها من الاندثار، وجعل إمارة الشارقة صرحاً تاريخياً ثقافياً شامخاً. ولكن تلك المواقع الأثرية والتاريخية لم تحظى بالترويج والتسويق ل
... Show MoreВ данной статье наше внимание обращено на современные заимствования, пришедшие в русский язык, а также их ключевые характеристики. Заимствованные понятия из США и Великобритании (американизмы, англицизмы) сегодня наиболее часто приходят во все сферы жизнедеятельности русскоговорящего человека.В статье называется источникиии их заимствования, исконным русским словам дается словообразовательная х
... Show Moreإن الدور الهام الذي تلعبه المشاريع الصغيرة والمتناهية الصغر واضح في جميع أنحاء العالم. تترك هذه المشاريع بصماتها على المشهد الاقتصادي نظراً لأهميتها الاستراتيجية في إعادة هندسة القطاعات الصناعية والتجارية والإنتاجية وتحقيق التنمية ودعم الاقتصاد فضلاً عن دورها في تمكين أفراد المجتمع بما فيهم الشباب. حيث ان تمكين الشباب وتذليل كل العقبات للاستفادة من طاقاتهم وإبداعاتهم يمثل رؤية وطنية مستدامة لدولة الإما
... Show Moreيتناول البحث دراسة انثروبولوجــية لـــظاهرة جديــرة بالاهتمام هــي (فكة الهراتي) كـــما يسميها مجتمع الدراسة وللظاهــرة تسمية تقابلها في التراث الانثروبولوجي (صراع الديكة) في هذا البحث اخترنا التسمية السائدة لدى مجتمع الدراســـة (فكة الهراتي) والفــكة مبــاراة تقام بين ديكين او بالمعنى الاصح بين اثنين من مالكي الدجاج المقاتل الذي يسمى (الهراتي) في مكان معين يسمى (خانة المسيب للدجاج الهراتي) ولها زمن معين،
... Show Moreتكشف هذه الدراسة عن العلاقة الخفية بين الأشخاص الأحياء والأموات. وعلى الرغم من انفصال الموتى عن عالم الأحياء، إلا أنهم كانوا مرتبطين بعقلهم الباطن وتبقى ذكراهم خالدة لدى الأفراد الأحياء. أن الحزن الشخصي هو الكارثة التي تنشأ كنتيجة معبرة لمنع الشخص من الاختيار المناسب للأشياء المحيطة به. تحاول أدريان كينيدي، في مسرحيتها "تتحدث مع بيتهوفن" إلى تقصي الدوافع السرية التي تهيمن على تفكير الفرد وسلوكه وتتحكم فيه
... Show More