The wireless technology and its application growing faster and faster in last decades. Mobile network is one of the fastest growing technologies in wireless network. This headed to some challenges that face mobile network such as how to serve the big number of users, efficiently of frequencies is scarce and interferes with each other. One of the solutions to deal with such challenges is Cellular Networks which is used to divide a geographical area in to cells so that we can reuse the scarce frequencies in order to support more users and also to decrease interference. This paper introduces the importance of dynamic channel allocation in cellular networks and how much gain could be utilized by this technique. The Methodology depend on an intensive reading of what other research has been done in the field, then the model factors and the goal was built according to the main importance issues in this field. In order to realize the complications and limitations of the topic and to have comprehensive understanding many work in the literature have been revised. The mechanism was tested in two different scenarios, with uniform and non-uniform load distribution. For the findings: A new mechanism was introduced to overcome the previous limitations and to gain more efficient results. Also it utilizes artificial intelligence approach to make the allocation process optimal. Moreover, the new mechanism depends on four factors cell size, coordination, frequency reuse, and hand over to make the allocation process efficient and reliable.

This study is directed to the business community regarding the planning of advertisements and more specifically implementing their reference prices. The aim is to investigate the effects of the presentation of reference prices of the consumers' behaviors. It is an empirical study in which the researcher has used literature reviews and survey to investigate the issue. A survey is delivered to 116 randomly selected respondents, where 86 people have replied. The researcher has investigated different areas related to reference prices such as the importance of advertised reference prices for firms, the effects of advertised reference prices to consumers purchase behaviors; the effects on the consumers purchase decisions; the products characteristics that influence consumers purchase behaviors, and finally the impact of the firms' variables to the consumers' behaviors. Reference prices may be defined as the cost that customers consider reasonable to pay or expect paying for a typical product. The market department of the organizational consistently engages in assessing the product's reference prices in order to set the level of prices affordable to customers or target markets. Today's customers are more knowledgeable than the customers in the past. This research will help in providing positive and easily acceptable tool to launch a new product in the market. Furthermore, it might be of great benefit to the business communities in the industries.

Now a day with the Internet revolution, the online business has been one of the most popular and efficient marketing methods. The change of the economy has the biggest impact on the business method. For example: social networking and its influence, shopping type, creativity, and create a new business environment.
Electronic business shows the success in the marketing over the world. Also, it becomes the promised feature of having deployed ideas in order to introduce products or services over the global.
The online services have been the most modern and convenient terminologies among the people using the social networking. When the social network has a hug influence on this kind of marketing, for example Facebook. We just heard about the Face book ten years ago and after four years only; the Twitter was launched. Those famous websites are the best examples can support the social networks. It was unbelievable in that time those billions of people will spend most their time on Face book. The most important thing, the market people started taking advantage of these social sites and make their own business. Moreover, many of them make a good investigation and develop good ideas.