The mixing of process colorants is conducted on cardboard with an inkjet plotter. In the article recipes are published for colorant compositions which are presented in pairs of equal colors in the visual spectrum. Every color in the family of colors with dual properties has the same difference ΔZ in the near infrared spectrum. The difference in the absorption of light at 900 nanometers is 0.14. In visual spectrum, the twins of two colorants are defined as colors with the value of their difference ΔE less than 3. Solutions using twins of colorants in two spectra have been experimentally tested in the print on drug packaging. Quality control of the readability of the text is conducted with new infrared mini-cameras connected to a tablet.

Modern technologies provide advanced knowledge and prepare students for lifelong learning. They affect both education and upbringing. Electronic learning is now inevitable. The main goal is to create a modern school through information technology, and to abandon the current traditional way of working. Electronic learning offers many learning advantages where we will point out some of its most important features in the paper, and we will give guidance on how to apply it through several tasks related to the attitudes and opinions of teachers and students about its use, better results, more motivation for learning and similar. We have come up with a result where students and teachers advocate learning through information technology in classroom teaching and want to apply them in their work.

In the article is presented the design for security graphics on packaging with invisible information. The color choice is underlined by the INFRAREDESIGN® theory. Individual solutions for joining two independent images are realized with digital printing and interpreted with computer animation. Separation of the dye is performed for the default response of the hidden drawing that is released by the infrared camera. Product recognition is with IRD process as a "visual information identity". Hidden graphics are designed with a protective line solution. Experiments have been carried out in the pharmaceutical field, on the packaging of drugs. Proving the authenticity of the content is carried out by recording the packaging and comparing it with the specimen that was recorded as photographs of the twenty light blockades in the visual and infrared spectrum.

Mijesanje procesnih bojila provodi se za digitalni tisak na kartonu s inkjet ploterom. U radu se objavljuju recepture sastava bojila koje se prezentiraju u parovima jednakih boja u vizualnom spektru. Familija svih boja s dualnim svostvima imaju jednake razlike ΔZ u bliskom infracrvenom spektru. Razlika apsorpcije svjetla na 900 nanometra je 0.14 U vizualnom spektru, blizanci dvaju bojila definiraju se kao boje s vrijednoscu njihove razlike ΔE majom od tri. Rjesenja s upotrebom blizanaca bojila u dvama spektralnima podrucjima su eksperimentalno testirana u tisaku na kutijama za ljekove. Kontrola kvalitete citljivost skrivenih informacija izvodi se s novim minijaturnim infrared kamerama koje su prikljucene na prenosno tablet racunalo.

In this paper the application of problem teaching mathematics and respect its characteristics was investigated in the lower grades of primary school, in order to demystify its role and importance in enhancing the educational and functional effect. The research was done in the period from September to December 2015, by testing students of fourth grade in five elementary schools. Statistical analysis of the selected groups has shown there is no statistically significant difference between groups, and the test normality of distribution was done using the Kolmogorov-Smirnov and Shapiro-Wilk test. Analysis and comparison of results before and after the experimental program, indicates a significant improvement in students' knowledge and mathematical competencies applying the methodology that has been implemented.

The aim of this article is to describe the process of implementation of the GPS system for telemetric monitoring in the mining industry. The paper presents the components of this system, supporting infrastructure and capabilities that can be achieved by implementing such a project. In addition to the opportunities provided by this system, telemetry monitoring is given the possibility of extension with monitoring additional information. Below is the current implementation of the phase, field management, constraints, objectives and estimated time for the implementation of such projects.

This paper presents architecture of the software system for semantic e-mail addressing. It explores the possibilities for creating and updating the knowledge base system about employers and job vacancies, which is created based on domain ontologies. It also describes in details the process of publishing database on the Semantic Web and plans for further updating and improving the existing knowledge base system. Due to specific kind of work, and necessity of automating communication with employers, the presented system is applied in the Employment Agency of Montenegro.