Abstract:There are measures that can be taken to protect users from objectionable orinappropriate Internet content and secure the LAN from theft, modification, or deletionof data. Firewall is one of many security measures that can be used to protect networks.Although firewalls are powerful, they suffer from many types of attacks.This paper concentrates on one particular aspect, which is providing firewallssecurity against five types of attacks. These attacks are: SYN Flooding, Ping of Death,IP Address Spoofing, Impersonate one-half of a Session and Session Hijacking. Thiscan be done by building a specific strategy for a firewall; a strategy that has threeprocedures, some of which could be stood for more than one attack.

الخلاصة:ھناك العدید من طرق الحمایة التي تؤخذ بنظر الاعتبار لحمایة بیانات المستخدمین في الشبكات المحلیة المرتبطةبالانترنیت من السرقة والتحویر والتدمیر. اشھر طرق الحمایة لمواقع الانترنیت ھي أنظمة جدران النار، والتيبرغم قوتھا، فانھا تكون معرضة لعدة انواع من الھجوم. یركز ھذا البحث على بناء جدار ناري ضد خمسة انواعمن الھجوم، وذلك من خلال احتوائه على ثلاثة اجراءات یستطیع بعضھا مواجھة اكثر من ھجوم واحد.

Firewall --- protection --- Internet --- attack.

In this paper the Internet was used as a media for transmission an ECG (Electro-Cardio-gram) signal from a patient directly to a remotely reside doctor or consultant whowill respond via the same media directly. The ECG signal (at patient side) has beencompressed in a manner to achieve low bandwidth requirement by using Matlabcapabilities. Also, at consultant side the original signal is reconstructed using the samecapabilities of Matlab. The Internet works as the center of communication between thetwo sides. A database was used to store the patient information which can be handledeasily by consultant. Respecting the internet no more than a simple rented web site wasrequired as a file storage shared between the consultant and patient. The results showthat the received signal at the doctor side after reconstruction had the complete andcompatible to the signal used for diagnosis.

في هذه البحث ، إستعمل ْ ت شبكة الإنترنت كوسيلة لإرسالِ إشارَة (إي سي جي ) مِ  ن المريضمباشرة إلى الط بيب أو الاستشاري ع  ن ب  عد والذي سي  ر  د عن طريق نفس المنظومة مباشر ة. ضغِط ْ تإشارة ال ( إي سي جي ) في جانبِ المريض باسلوب للحصول على متطلبِ ذو المجالِ المنخفضِأيضاً في جانب الطبيب أو الاستشاري فان الإشارَة الأصلي َ ة سيعاد ، Matlab بإستعمال قابلياتِ الالإنترنت تَ  عملُ كمركز الإتصالِ بين الجانبين . هنالك قاعدة .Matlab بناءها باستخدام نفس قابلياتِبيانات قد انشأت لخزن معلومات المريض والتي من الممكن الوصول اليها بسهولة من قبل الاستشاري .كذلك بالنسبة الى الانترنيت لم نحتاج الى اكثر من موقع بسيط تم استأجار ه ليعمل كواسطة لخزنالملفات ويتم استخدامه من قبل الاشتشاري والمريض . أظهرت النتائج بان الاشارة المستلمة من قبلالطبيب كاملة المواصفات بعد اعادة بنائها ومطابقة للاشارة المرسلة لاستخدامها للاغراض التشخيصية

ECG Monitoring --- Via Internet --- FTP

Background: Internet is regarded as one of the most indispensable parts in our life, and majority of young and adolescent people interested in theusage of it, but in some cases, these uses are become out of the control which later on lead to a condition called internet addiction in which it willbe the predominant life activity. Objective: A descriptive cross‑sectional study was conducted on Kirkuk Technical Institute students from January1, 2017, to May 30, 2017 to study, if there is any relation between the occurrence of depression and internet usage. Materials and Methods: Thetotal number of students included in the study was 550 from different scientific departments after distributing a special questionnaire formprepared for that purpose, and face‑to‑face interview was conducted after receiving the written consent from them. Results: The study resultsshow that 60.8% of technical study students and 47.3% of students from administrative departments used internet daily, while 46.0% of studentsof health department used it weekly. In addition to that 72.1% and 67.8% male students from technical and administrative departments usedinternet daily, while female students from all departments (technical, administrative, and health) used the internet monthly; in addition to that53.1% of students from administrative departments have a depressive attempts which affects daily activity and work in comparison to 18.5% ofstudents from technical departments. Conclusion: The study concluded that the time spent for internet was about 7–9 h/daily with the presenceof a suggestive depressive symptom which affects daily activity and work. Recommendations: The study recommended that further advancededucational programs about the main adverse effects of the internet and the main possible ways to control its usage.

Depression --- internet usage --- relation --- students

ABSTRACT:BACKGROUND:Internet has become an important part of our daily life, despite a lot of beneficial services availableon the internet, excessive use may lead to negative consequences. College students are the mostat risk groupOBJECTIVE:This research aimed at estimating the prevalence of internet addiction disorder and trying to find outits determinants among Medical College Students in Baghdad..PATIENTS AND METHODS:This cross sectional questionnaire survey was conducted on a sample of Al-Kindy Medical CollegeStudents in Baghdad using a self-administered questionnaire, information collected from 263 studentsfrom April through May 2017.RESULTS:The study showed that the Prevalence rate of internet addiction disorder among Al-Kindy MedicalCollege Students was 49 %.A statistically significant relation had been found between internetaddiction score and hours spent online daily, using social network applications and online games, anddaily hours spent online (p<0.05).CONCLUSION:Internet addiction is common among Al-Kindy Medical College Students. Spending more hoursonline per day, using social network applications and games were among the determinants of internetaddiction disorder.

KEY WORDS: internet --- addiction --- determinants

Described a century atheist Twenty-era information and communication revolution, computer, genetic engineering, perhaps the existence of the information network (internet) has a role in increasing the spread of knowledge and cultural exchange among the peoples of the world, that this revolution is superior in science and technology is characterized by relying primarily on the development of mathematics. Therefore, stresses (William Obeid, 1998, p 3) that mathematics is a component of a ruler as being - and as he was expected in the future - from the innovations of science and technology, the mathematics curriculum must attract each other with data development, Vtkhala it coats the traditional limited fabric on a set of rules and laws that suffer from the most reluctant students - the more so for them - where they see a lot of symbols and abstract formulations of rigid, strain the pupil in Mntoqatha and methods of teaching and examinations by, or occupied by the complex processes easy to entering into the accounts and computers. Mathematics is one of the materials that students suffer from Ankhvaz the level of achievement, and this is confirmed by the study of flowers (1994) and the study of the Secretary (1998). Both the (Yousef al-Husseini, 2000, p 145) and (Andalh Khudair, 2004, pp. 13-24) with the above, where are pointing to the existence of a decline in the collection of mathematics for the majority of students at different stages, and attributed the cause of poor students in the collection of mathematics to weaknesses in the to raise motivation to learn. What the study of mathematics at all levels of education in general and particularly in the primary stage characterized by rigid and abstract in content and methods of teaching activities, it is far from the daily life of students as they do not care about life applications of mathematics .... Which the student loses a lot of aspects of cognitive and affective skills and were not the traditional image of the grade acceptable to the educators at the present time there are a lot of innovative ideas and opinions, which looks at the practical education in different ways. Emphasizing both (windschitl, 1999) (good olives and Kamal Olive 1992) that among the most important of these educational theories espoused by educators currently called the ((theoretical structural)) and construction is not a method of teaching, but is the culture of educational full based on the belief that learners build knowledge and interpret each in his own way through interaction with natural phenomena and with others around him (Lwahr, 2002, p 94). During the past two decades has occurred a major shift in educational research as it took the focus is on what is going on inside the mind of the learner when exposed to the positions of education such as knowledge of past and his ability to remember and its ability to process information and Dafieth learning (Khalili et al, 1996, p 425). Takeda, and unclear on the above, there is a need to conduct a study designed to identify the effectiveness of the model builders in the collection of math students in sixth grade.

يوصف قرن الحادي والعشرون بعصر ثورة المعلومات والاتصالات والحاسوب والهندسة الوراثية ولعل وجود شبكة المعلومات (internet) له دور في زيادة انتشار المعرفة والتبادل الثقافي بين شعوب العالم , إن هذه الثورة الفائقة في العلم والتكنولوجيا تتميز بالاعتماد بشكل أساسي على تطور علم الرياضيات . ولذلك يؤكد (وليم عبيد , 1998,ص3) على ان الرياضيات تعد عنصرا حاكما فيما يجري حاليا – وفيما هو متوقع مستقبلا-من مستحدثات علمية وتكنولوجية , فان مناهج الرياضيات لابد ان تتجاذب مع معطيات التطور , فتخلع عنها ردائها التقليدي الذي يقتصر نسيجه على مجموعة من القواعد والقوانين التي تعاني عزوفا من معظم التلاميذ – كلما كان لهم الى ذلك سبيل – حيث يرون فيها كثيرا من الرموز والصياغات المجردة الجامدة , ترهق التلميذ في منطوقاتها وأساليب تدريسها وامتحاناتها التي تشغله او عمليات معقدة يسهل اجرائها بالحسابات والحواسيب .وتعد الرياضيات احدى المواد التي يعاني الطلاب من انخفاظ مستوى التحصيل فيها , وهذا ما أكدته دراسة أزهار (1994) ودراسة الأمين (1998) . يتفق كل من (يوسف الحسيني ,2000,ص145) و (نظلة خضير , 2004 ص 13-24) مع ما سبق , حيث يشيران الى وجود تدن في تحصيل الرياضيات لغالبية التلاميذ في المراحل المختلفة , ويعزى سبب ضعف التلاميذ في تحصيل الرياضيات الى الضعف في اثارة دافعيتهم لتعلمها .ما ان دراسة الرياضيات في جميع المراحل التعليمية بصفة عامة وبصفة خاصة في المرحلة الابتدائية تتسم بالجمود والتجريد في محتواها وطرائق تدريسها فهي بعيدة عن انشطة الحياة اليومية للتلميذ كما انها لا تهتم بالتطبيقات الحياتية للرياضيات .... مما يفقد التلميذ الكثير من الجوانب المعرفية والمهارية والوجدانية فلم تكن الصورة التقليدية للصف مقبولة لدى التربويين في وقتنا الحاضر وهناك الكثير من الافكار والاراء التجديدية التي تنظر الى العمليـ التربويـ بطرق مختلفة .إذ يؤكد كل من (windschitl,1999) ( حسن زيتون وكمال زيتون 1992) ان من بين أهم هذه النظريات التربوية التي يتبناها التربويون حاليا ما اطلق عليه اسم (( النظرية البنائية )) والبنائية ليست طريقة تدريس وانما هي ثقافة تربوية كاملة مبنية على الاعتقاد ان المتعلمين يبنون المعرفة ويفسرونها كل بطريقته الخاصة من خلال التفاعل مع الظواهر الطبيعية ومع الآخرين من حولـه ( الوهر , 2002 , ص 94) .وخلال العقدين الماضيين حدث تحول رئيسي في البحث التربوي اذ اخذ التركيز ينصب على ما يجري بداخل عقل المتعلم حينما يتعرض للمواقف التعليمية مثل معرفته السابقة وقدرته على التذكر وقدرته على معالجة المعلومات ودافعيته للتعلم (الخليلي وآخرون, 1996 , ص 425) .وتاكيدا على ما سبق يتضح وجود حاجة الى اجراء دراسة تستهدف التعرف على فعالية نموذج بنائي في تحصيل الرياضيات لدى تلاميذ الصف السادس الابتدائي .

شبكة المعلومات internet --- ، تطور علم الرياضيات