Nowadays, spam has become serious issue for\ud computer security, because it becomes a main source for\ud disseminating threats, including viruses, worms and\ud phishing attacks. Currently, a large volume of received\ud emails are spam. Different approaches to combating these\ud unwanted messages, including challenge response model,\ud whitelisting, blacklisting, email signatures and different\ud machine learning methods, are in place to deal with this\ud issue. These solutions are available for end users but due\ud to dynamic nature of Web, there is no 100% secure\ud systems around the world which can handle this problem.\ud In most of the cases spam detectors use machine learning\ud techniques to filter web traffic. This work focuses on\ud systematically analyzing the strength and weakness of\ud current technologies for spam detection and taxonomy of\ud known approaches is introduced

Introduction.Station route allocation plan is an important extension of the train running diagram and the both are closely intertwined so the overall research on the synergetic preparation method is more beneficial in improving the preparation quality of the train running diagram and providing better service for passengers. Therefore, the research topic has practical significance.Methodology.Based on extensive literatures, this paper studies the synergetic preparation method of train running diagram and station route allocation plan in detail and analyses their association for providing a theoretical basis for the synergetic preparation method.Results. This work introduces the synergetic, analyses the systematic characteristics of the operation organization system of high speed railway and puts forward the optimization strategy of train running diagram and station route allocation plan.Conclusions.The work provides the solution for the preparation of the train running diagram and station route allocation plan by solving the examples based on the relevant optimization factors, such as train running in districts and train arrangement.

Cilj je ovoga rada predložiti mjerenje u svrhu kvantificiranja i poboljšanja dugotrajnosti voznih redova već kod izrade. U radu se predstavlja modeliranje i primjena ex-ante mjere dugotrajnosti za vozne jednokolosiječne željezničke...

The paper proposed the optimization of the network construction timing of the control network according to the specific conditions of the survey route. Moreover, presented here are the adjustments according to the layout requirements of the control network layout process, strengthening the control of the line level base point during the construction process. Several optimization solutions are discussed for the special design of the level control before the construction of the long tunnel. It has been explained the methodology to introduce new Continuously Operating Reference Station (CORS) technology in railway survey and design with appropriately adjustment of the position requirements of the control network according to the specification. In order to carry out the special design of the levelling route with precision, it is advisable to set a certain stable reference point in the level control of the long line. The proposed methodology can effectively solve some problems existing in the current high-speed railway construction process, and make the precision measurement control network better for survey, design, construction, supervision and operation.