أشارت الجهود المعرفية السابقة إلى وجود اهتمام متزايد بالجماعات (Groups) على أساس أنها اللبنات الأساسية لقيام المنظمات. وقد فرض تعدد المنظمات في المجتمعات المعاصرة وتباينها من حيث أهدافها وطبيعة نشاطها، تجزئة فعالياتها إلى تخصصات عدة على وفق إطار تقسيم العمل، وبما أدى إلى تقسيم الأفراد العاملين إلى جماعات مختلفة في أدائها وأحجامها وشكلها، والتي تعمل جميعها لتحقيق هدف تلك المنظمات الذي قامت من اجله، مما يحقق لها البقاء والتقدم في وسط بيئة تتصف بالتغيير السريع. ولعل ابرز ما يشغل الباحثين والممارسين والدارسين للجماعات، هو تحقيق التناسق والتكامل داخلها، ومن أبرز أشكال التناسق والتناغم بين أفراد الجماعة الواحدة هو التعاون (Cooperation) ولقد عدَ (Barnard 1938) وهو أحد أوائل المنظرين في مجال التنظيم الحديث، التعاون شيئاً مهماً جداً لبقاء الوحدة الاجتماعية مستمرة في تلك الوحدة التي يرفع أعضاؤها بعضهم البعض للسلوك التعاوني. وهنالك منظرون آخرون تأثروا بـ Barnard)) أمثال (March & Simon)و (Thomson)، أدخلوا فيما بعد آراء مماثلة لارائه، وبالنتيجة صار التعاون مفهوماً أساسياًً في علم المنظمة والسلوك التنظيمي (Wagner, 1995). وعلى الرغم من الأهمية الكبيرة للتعاون، إلا أن المرء ينظر من خارج علم المنظمة ليجد سيلاً كبيراً من النظريات والبحوث والدراسات التي تتعلق بالتعاون بين أنواع الجماعات في منظمات الأعمال المعاصرة. فقد قام الباحثون في مجال الاقتصاد، وعلم النفس الاجتماعي بدراسة الأنماط السلوكية التي سميت "بالتطفل"Free–Riding) ) "والتواكل" Loafing Social)) أو الاعتمادية على الغير (Wagner, 1995)، وسعت بدورها إلى تحديد العوامل التي تعيق ميول الأفراد نحو التعاون. وفي مجال آخر من البحوث علقّ عدد من علماء الاجتماع على الميول الفردية للعديد من النظريات الحالية بشأن التعاون الاجتماعي والسلوك الإنساني، وأتجه بعضهم للقول إلى أن وجود الميول المتجهة نحو الجماعية قد تحفز التعاون بطرائق لم يجرِ تصورها في معظم البحوث، ومن هذا المنطلق، يجد الباحثان أنفسهما أمام أهمية دراسة مدخل الجماعية وأثره في تعاون الأفراد والجماعات داخل المنظمات، ومن أبرز ما وجداه مهماً هو هذا المدخل الذي يقود الفرد العامل في جماعة ما إلى تحديد سلوكياته داخلها، ومن ثم فأن اتجاهاته تؤثر في سلوكياته نحو التعاون مع أقرانه في الجماعة، أو عدم التعاون معهم.
The growing use of tele
This paper presents a new secret diffusion scheme called Round Key Permutation (RKP) based on the nonlinear, dynamic and pseudorandom permutation for encrypting images by block, since images are considered particular data because of their size and their information, which are two-dimensional nature and characterized by high redundancy and strong correlation. Firstly, the permutation table is calculated according to the master key and sub-keys. Secondly, scrambling pixels for each block to be encrypted will be done according the permutation table. Thereafter the AES encryption algorithm is used in the proposed cryptosystem by replacing the linear permutation of ShiftRows step with the nonlinear and secret pe
... Show MoreSteganography is a technique of concealing secret data within other quotidian files of the same or different types. Hiding data has been essential to digital information security. This work aims to design a stego method that can effectively hide a message inside the images of the video file. In this work, a video steganography model has been proposed through training a model to hiding video (or images) within another video using convolutional neural networks (CNN). By using a CNN in this approach, two main goals can be achieved for any steganographic methods which are, increasing security (hardness to observed and broken by used steganalysis program), this was achieved in this work as the weights and architecture are randomized. Thus,
... Show MoreThe research aims to improve the effectiveness of internal control system according to a model COSO, by identifying the availability of system components according to the model and then improve the effectiveness of each component by focusing on areas for improvement in each component, as it was addressed to a model COSO and then Maamth with the environment, the current Iraqi by introducing some improvements on the form of some mechanisms of corporate governance of the Council of Directors, and senior management, the Audit Committee, Committee appointments, especially that supplies application available in the laws and legislation, the current Iraqi, taking into consideration to make some
... Show MoreSatire is genre of the literary arts that has always been the source of human interest. Because it is difficult to accept direct criticism, Satire appears as a literary tool in which vices, follies, abuses and shortcomings are held up to ridicule, with the intent of shaming individuals, corporations, government, or society itself into improvement. A satirical critic usually employs irony to attain this goal. Although satire is usually meant to be humorous, its greater purpose is often profitable social criticism, using wit to draw at
... Show MoreThe current research aims to measure Generalized Anxiety Disorder among students of the University of Sulaymaniyah / College of Basic Education, and to identify the significance of differences between sex, scientific specialization and age, and for that reason, the research sample of (102) male and female students was chosen in a random manner, and the researcher used the diagnostic criteria for the generalized anxiety disorder contained He mentioned it in the Statistical and Diagnostic Manual of Psychiatry, and the paragraphs of the scale were formulated according to those standards after they verify the conditions of honesty and consistency, and the use of appropriate statistical means. The results of the research indicated that genera
... Show MoreAttacking a transferred data over a network is frequently happened millions time a day. To address this problem, a secure scheme is proposed which is securing a transferred data over a network. The proposed scheme uses two techniques to guarantee a secure transferring for a message. The message is encrypted as a first step, and then it is hided in a video cover. The proposed encrypting technique is RC4 stream cipher algorithm in order to increase the message's confidentiality, as well as improving the least significant bit embedding algorithm (LSB) by adding an additional layer of security. The improvement of the LSB method comes by replacing the adopted sequential selection by a random selection manner of the frames and the pixels wit
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ملخص البحث:
ان الله تعالى هو الذي خلق جميع المخلوقات ، والذي بيده الموت والحياة وان كل هذه المخلوقات تحتاج الى اوامر ، وهذه الاوامر الالهية وجهها الله لعبادة بوساطة انبياءه ( عليهم السلام) فكانوا هم اول المستسلمين والمنقادين لأوامره ، فجاءت الآيات الكريمة مخاطبة للأنبياء واقوامهم بشكل عام ولنبينا محمد (r) بشكل خاص.
اما عن المضمون البحثي فقد جاءت مادته مقسمة الى ثل
... Show MoreIn this work, two cone-inverted cylindrical and cross-hybrid dielectric resonator antennas are stacked and excited by the coaxial probe method with an operating standard resonant frequency of 5.438 GHz. A drawback of these standard Dielectric Resonator Antennas (DRAs) is their narrow bandwidth. For good antenna performance, a stacked DR geometry and a thick dielectric substrate having a low dielectric constant are desired since this provides large bandwidth, better radiation power, reduces conductor loss and nonappearance of surface waves. Many approaches, such as changing the shape of the dielectric resonator, have been used to enhance bandwidth. Using DRA, having the lowest dielectric constant, increases the bandwidth and the electroma
... Show MoreA theoretical study to design a conformal microstrip antennas was introduced in this work. Conformal microstrip antennas define antennas which can be conformed to a certain shape or to any curved surface. It is used in high-speed trains, aircraft, defense and navigation systems, landing gear and various communications systems, as well as in body wearable. Conformal antennas have some advantages such as a wider-angle coverage compared to flat antennas and low radar cross-sectional (RCS) and they are suitable for using in Radome. The main disadvantage of these antennas is the narrow bandwidth. The FDTD method is extremely useful in simulating complicated structures because it allows for direct integration of Maxwell's equations depending o
... Show MoreFrancisco de Quevedo is a well-known man of letters in the Golden Age of Spanish literature. He is the witness who related to us, in his works, the Spanish community in that era. He showed in most of his writings the political weakness of Spain, and made prominent the remarkable literary aspect of Spain. He had a very good tlent for poetry, and a rather polite style in exploiting colloquialisms in his literary writings. He wrote about philosophy, where his most prominent work was "The cradle and the grave". The writer was also very well-known for his puns which were employed to clarify his inner thoughts regarding the Spanish situation at that time.
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