mohammad ali ghaderi

Media, by creating changes in values, beliefs and attitudes, perceptions and images and mindsets of society, provide the ground for persuasion and acceptance and play an important role in all political, economic, social and cultural spheres of the country. The present study was conducted with the aim of identifying contingency factors affecting media management. The research is a descriptive and analytical study and has been investigated using documents, books and related internal and external researches. The findings of the study showed that different approaches such as systemic approach, public management approach, management based on ownership and strategic management approach have been presented and implemented for media management, each of which has different limitations and indicates their incorrect and limited understanding of the subject of media management. Limiting media management to media relations and reducing its level to public relations and even lower to advertising management. One of these limitations is the lack of attention to the conditions and frequent changes in the media. Therefore, in this study, the contingency approach was also stated as one of the specific approaches of strategic management, which, considering the characteristics of the media and also the extensive changes in the structure and system of message transmission in the media, is a necessary and important approach in the field of media management. And based on that, it is necessary for media management to have comprehensive and complete plans for different conditions and sudden and rapid changes in the field of media and even political and social conditions. To achieve a contingency approach in the media, contingency factors affecting media management must be identified. The findings showed that these contingency factors can be divided into two categories: organizational and extra-organizational. Also, the results showed that the strategies and strategies of the organization, changing the expectations of employees, advancing information technology or changing technology and the high volume of work are the most important contingency conditions of media management. Also, changing government and tax regulations, public interest in the media and increasing social awareness are the most important extra-organizational factors with a contingency approach.

The expansion of information technology has created many changes in various sectors, including the field of marketing and advertising, and has added concepts such as digital marketing to the literature of the field of marketing. The present study was conducted with the aim of investigating digital marketing communications. This research is of a descriptive type and has been done with a review of internal and external researches about communication and strategies used for it in digital marketing. The findings of this research show that in digital marketing, in addition to advertising content, communication and communication strategies also have a great impact on brand introduction and market attraction and its competitive advantages. In digital marketing, there are various types of communication, including interactions in social networks, advertising banners, communication through search engines, offline communication such as email, and secret communication such as advertising worms, which are used to increase awareness, interaction, experience, acquisition or retention. Customer use.

"TAJARRI" is generally said to be a situation where the perpetrator commits a crime and a sin with knowledge and discretion, but after the intention is implemented, the incompatibility of the action and the result with the intention of the perpetrator is discovered; As a result, he committed an act that was not a crime. The subject of "TAJARRI" is one of the important subjects in the science of law and the principles of jurisprudence. However, due to the multifacetedness of this debate, there are differences in the views of scholars regarding whether this issue is included under the questions and issues of which science, although it has often been examined in the science of the principles of jurisprudence. This issue becomes important because sometimes the legal and fundamental view of moral or theological issues and vice versa leads to incorrect results. Therefore, it is important that every issue is evaluated with the correct approach and analyzed from the perspective of related scientific expertise. In this research, which was carried out in a descriptive-analytical way, while explaining the dimensions of the "TAJARRI" issue, we found that: However, this issue is jurisprudence or jurisprudential rules from the point of view of sanctity and lack of it, but from the aspect of including the evidences of sanctity on "TAJARRI" it is in the position of the science of principles of jurisprudence. Regarding the entitlement of Aqab Mozhri, although the appearances indicate that the discussion is "theological", but according to the evidence presented, it is not a "theological" issue and it is raised about the science of principles; But the ugly topic of "TAJARRI" is one of the "theological" topics.

Culture is a highly collaborative form of activity in which people build their communities and identities. Culture shapes people and cultivates their capacities for speech, action and creativity. Media culture is also involved in these processes and since people spend a lot of time using media, it has significant effects on people's views and identity. This research was conducted with the aim of investigating the role of social media management in expanding media culture. The research is descriptive-analytical and has been done using the library method. The findings of this research showed that the emergence of social media has become a suitable platform for the interference and integration of cultures and the change of values in different societies, which has caused the emergence of media culture. Media culture is now the dominant form of culture that today causes the reproduction of social personality and identity change. By sharing ideas and information through virtual networks and increasing the interactions of people with different cultures, social media has changed the beliefs and expanded the cultural commonalities of different communities or religions and ethnic groups.

According to medical science data, "infants" have a special status in terms of breastfeeding and custody, which has made the role of mothers in their health irreplaceable. Mother's milk for premature infants is associated with the characteristics of urgency and necessity and exclusivity; Therefore, the confrontation of the mother's religious duties towards the baby and her religious responsibilities towards her husband is inevitable and is considered as a kind of jurisprudential challenge. In this descriptive-analytical study, the obligation of breastfeeding with the first title and the sufficient obligation of custody for the mother as well as the criteria of inconsistency show that although a general ruling is not possible and the case needs a case study, in most cases, the mother's duties to the baby Immature is legally preferable. Considering the exclusion of the subject from the inclusion of no harm and no wrong (la haraj) rules and the absence of explicit preference from the texts in this chapter, it is important to discover the verdict based on the preference of the chapter of conflict(tazahom) and the rules of important and more important(aham and mohem).

According to the Islamic  jurists' Idjma, Khums of profits of income must be calculated after deduction of customary expenses of the duty-bound and those family members  entitled to receive maintenance; hence the need to determine the beginning and end of a period to calculate expenses. The results of this research are as follows: first. Determination of Khumsi year has not been expressed in any parts of the narrations and the Ali ibn Mahzyar's narration which is resorted to has been issued by the Infallible under the exceptional circumstances of the particular time and recourse may not be had thereto in this regard.  The authority of narrated Idjma is also refused given the opposition of some Islamic jurists and the fact that its source is known and due to its contradiction with Imam Sadegh’s narration. In addition, the beginning of this expanded duty is not either the start of the business or lapse of one year from the start of the business or the rise of profit, but the only criteria for duty to pay Khums is the rise of profit and it being surplus to expenses. Distinction between businesses with immediate or gradual incomes is meaningless too.

Automatic classification of text data has been one of important research topics during recent decades. In this research, a new model based on data fusion techniques is introduced which is used for improving text classification effectiveness. This model has two major components, namely feature fusion and decision fusion; therefore, it is called Feature Decision Fusion (FDF) model. In the feature fusion component, two well-known text feature selection algorithms, Chi-Square (X2) and Information Gain (IG) were used; this component applied Ordered Weighted Averaging (OWA) operator in order to make better feature selection. The second component, Decision fusion component, combined two kinds of results using the Majority Voting (MV) algorithm. The results were obtained with feature fusion and without feature fusion. To evaluate the proposed model, K-Nearest Neighbor (KNN), Decision Tree and Perceptron Neural Network algorithms were used for classifying Rueters-21578 dataset documents. Experiments showed that this model can improve effectiveness of text classification in accordance to both Micro-averaged F1 and Macro-averaged F1 measures.