The Talent Training Model of Forensic Medicine in Japan and Its Reference.

The quality of Japanese forensic experts has been widely recognized around the world, which cannot be separated from the "ripple effect" caused by the rapid rise of the modern forensic education in Japan. By continuously adopting foreign forensic education resources and teaching experience, it has finally formed a forensic professional talent training model with a clear hierarchy of basic education and professional training, as well as classroom teaching and case studies complementing each other; and it continuously improves the comprehensive quality of practitioners through domestic training and international exchange and cooperation, providing talented professionals for the development of the Japanese forensic industry. In this context, this article takes the development history of Japanese forensic medicine as the starting point to study how it gradually formed the embryonic form of forensic education in modern times. Based on this, it analyzes the characteristics of Japan's modern forensic medicine talent training model, summarizes excellent experiences for localized transformation, such as emphasizing the role of practical teaching, exerting the effectiveness of vocational skills training, and promoting international exchange and cooperation, to provide reference and inspiration for the training of relevant professional talents in China.

The operating regularity of the stepper motor of thermal inkjet printers and its application in the China national accreditation service 2017ZO146 altered documents identification proficiency test.

With the continuous innovation of inkjet printing technology, the methods of using inkjet printers for falsification have also constantly evolved, leading to increasing difficulties in identifying printing alterations made by the same inkjet printer. This paper mainly studies the operating regularity of the stepper motor of inkjet printers to determine the operating mechanism of inkjet printers and thus to identify whether documents had been tampered with. To detect the operating track of the stepper motor, 154 documents printed by 22 different brands and models of thermal inkjet printers were studied according to the periodic morphological characteristics of ink marks and the track of the stepper motor during different printing processes. As a result: ① the maximum gauge of 22 printheads was found to be different and ② the different distribution of ink marks were mainly affected by the direction and speed of the stepper motor. The track of the stepper motor was able to be determined by the periodic morphological characteristics of the ink marks combined with the maximum gauges, and could be used to judge how many times a document was printed. The observed regularities were evaluated by the CNAS 2017ZO146 test, a national proficiency test in China. In conclusion, using the summarized operating regularities of the stepper motor, it is possible to identify printing alterations made by the same thermal inkjet printer.