نشریه دانش انتظامی خراسان جنوبی
سال دهم شماره 4 (پیاپی 39، زمستان 1400)

Nanotechnology is a science that is advancing rapidly. One of the fields of development of this technology is criminal science, which has led to the development of new methods to combat crime; Therefore, due to the great capabilities of nanotechnology in fast and accurate detection and detection, it has promised that in the near future, with the help of this technology, more effective steps will be taken to prevent crime and identify violators. In this regard, the use of this technology in fingerprinting can provide new and scientific solutions to detect and improve hidden fingerprints. The main question of this research is what is the application of nanotechnology in fingerprinting? As a result, nanoscience has developed a variety of materials for achieving hidden fingerprints, including nanomaterials, oxide nanoparticles, fluorescent nanoparticles, and nanomaterials converted to rare earth ions (UCNM). The advantages of these materials over the old methods are high differentiation, high sensitivity, high selectivity and low toxicity.

With the increasing expansion of cyberspace in various aspects of human life and also increasing the knowledge of cyberspace users, privacy and information security in this space also seems necessary and vital. There are several ways to protect this huge amount of information in cyberspace, and one of the most effective ways in this regard is intrusion detection systems; But existing detection and intrusion systems also have drawbacks such as high false alarm rates and .... In this article, we intend to examine the issue that if the incoming traffic can be pre-processed and the traffic suspected of being attacked can be filtered, the false alarm rate can be reduced and the system efficiency can be increased. Traffic or data classification can be done in various ways, including k nearest neighbor (knn), etc. In this article, we will use the decision tree, which is one of the oldest methods in this field, and the knn algorithm, and finally by refining the tree leaves. The decision or categories created with knn to categorize traffic remove suspicious attack clusters and send the preprocessed traffic to the intrusion detection system, and as the bulk of suspicious attack traffic is removed, the false alarm rate is reduced and performance is reduced. increase.

Forgery of documents is one of the main crimes of losing public trust and disrupting the country's economic system and is one of the important causes of social inefficiencies in society that can have a negative impact on public security. Since with the advancement of science and knowledge, the tools and means of change and distortion in documents are more available to forgers, it is necessary to take steps to identify and identify forged documents by using scientific equipment and methods. This research is applied in terms of type and purpose and descriptive-analytical in terms of nature. Compilation of subject literature and theoretical topics has been collected from library methods and study of relevant texts, articles, books and sources. The results of this study show that the crime of forgery, which is considered a ladder to achieve other crimes, is in great need of using the existing scientific potential of the world as the main tool to combat it. To succeed in this important mission, you must first produce secure securities using the necessary security metrics. Then, in the event of forgery, he used new technologies to criminalize and detect forged documents and arrest forgers.

The expansion of urbanization and the growing trend of population, followed by the diversity and prevalence of crime in societies; Therefore, ensuring order and security and crime prevention play an important role in society; Obviously, success cannot be achieved by relying on the police alone to fight crime. In fact, the police can not guarantee the establishment of order and security in society without the participation of the people and the necessary measures alone; Therefore, the police force has used social capacities in the field of crime prevention, one of which is the trusted police council. Accordingly, the present study seeks the role and effectiveness of the trusted police council in crime prevention. The present study was conducted using a qualitative method and using a data collection technique of semi-structured interviews with 15 commanders, police chiefs, law enforcement experts, criminology professors, councils, local trustees and prevention police managers of South Khorasan province and Zir Kooh city. All of them have had the experience of participating in the activities of the trusted police and people council in several years and their opinions and views have been purposefully used in the present study. The results of the research show that the police force has taken almost significant measures to interact and cooperate with the Trusted Council and despite the success of using the Trusted Council's capacity to prevent crimes and reduce harm and increase the sense of security, over time and lack of explanation. The duties of the Trusted Police Council and its role in preventing crime have become less important and more important.

The aim of this study was to investigate the factors affecting home escape from the perspective of runaway girls and their relatives in South Khorasan province. In order to collect data, a researcher-made questionnaire was used and social, family and individual factors from the perspective of runaway girls and family, social and economic factors from the perspective of people related to them were examined and tested. The method of the present study is descriptive-correlational and information was collected using a survey method. The statistical population of the study included runaway girls and related experts who were surveyed using the sampling method. The results showed that from the perspective of runaway girls, only family factors were identified as an effective factor in escape, and from the perspective of experts related to runaway girls, family, economic and social factors can all be as effective in escaping from home.

Detectives and investigative officers of the Awareness Police, as a scientific-specialized police, have a more prominent role in dealing with crime and criminals. This issue becomes more apparent when the investigator and the criminal judge issue a verdict based on the reports received by this group of officers; Therefore, in order for the evidence collected by the officers to be valid, in addition to the fact that they must be trusted and trusted by the judicial authority, the evaluation and approval of the measures taken by the detectives to gather evidence is also a condition for judges. The present research is applied in terms of type and purpose and in terms of descriptive-analytical nature with survey technique. ﺟThe case under study is the judges of the prosecutor's office and the criminal court of the capital of South Khorasan province. The study population is from three different spectrums (judges of the court-judges of the court-experts of the intelligence police) and is considered as a whole (60 people). In order to verify the main hypothesis of the research, a sample t-test was used and it was observed that the mean of this variable is 4.237 and its standard deviation is 0.272; Therefore, the main hypothesis of the investigation is confirmed and it can be said that the actions of the investigating officers in judicial decisions have a high validity; This means that the investigations of police detectives, which are sent to the judiciary in the form of various minutes and reports, have a high credibility with the judges of the court and the prosecutor's office and have a direct impact on the issuance of judicial verdicts.