This study analyses the process of adopting of the sign language with deaf and hard of hearing preschool children in the context of the result of linguistic and psycholinguistic research. The importance of the sign language is emphasized and its historical development is analyzed. It is pointed to the significance of the critical period for the adoption and the learning of the sign and spoken language with deaf and hard of hearing preschool children. The sign language is natural and primary linguistic expression of deaf children. Deaf and hard of hearing children are exposed to the sign and spoken language, they have better understanding and linguistic production than the children who are only exposed to the spoken language. Bilingualism involves the knowledge and the regular use of the sign language, which is used by the deaf community, and of the spoken language, which is used by the hearing majority. Children at the preschool age should be enabled to continue to adopt the language they started to adopt within the family (the sign language or the spoken language). Children will adopt the best both linguistic modalities through the interaction with other fluent speakers (the adults and children).

A way of communication on an equal footing with oral and written speech is sign language. Oral speech is a common way of communication, written speech has, with the development of information technologies, been taking up more and more space. In a parallel with them, communication can also take place through sign language, which is, to deaf people, as well as to all those who use it, a natural, simple and easy way to communicate. Relationship towards sign language has changed significantly throughout history from acceptance and isolated use, to complete rejection, and then to encouraging its adoption and emphasizing its importance for the cognitive, emotional, educational, social, and general development of deaf children. Serbian Sign Language (SSL) serves deaf people in Serbia as a means for everyday communication, for expressing desires, willingness, for learning, for intellectual discussions, for expressing personal style. Although the standardization of the Serbian Sign Language was completed in 2015, even nowadays we may still find certain gestures of expression varying in different regions. Different countries have different sign languages that are not reciprocally understood in use. They are distinguished by their own grammar (semantics, morphology, and syntax), different from the grammar of spoken languages. The distinguishing and recognition of sign languages in the world has led to changes in the field of education of deaf children. In bilingual schools, children acquire both sign and spoken languages, and teachers know both of the mentioned languages. The importance of sign language in the education of deaf children is emphasized.

The consequences of improper land management are long-term, inadequate for agricultural production, and reflected through the loss of land, reduced yields, soil erosion, etc. In order to determine the optimal role or suitability of the land for apple cultivation within the Bužim municipality, a survey was conducted according to the FAO method of AEZ (FAO, 1976), and based on the obtained results, an assessment of the suitability of the land for apple cultivation was carried out. It was found that a significant land portion of the total of 13,026.27 ha agricultural land within the Municipality of Bužim is suitable for fruit production marked from S1 to N suitability class. Thus, the areas with the best graded class S1 cover only 1.23% or 159.52 ha, the S2 class occupies 5.51% (717.24 ha), the S3 class occupies 2.29% (298.24 ha). However, the largest areas are marked as the unfavourable N-class with 36.68% (4,772.60 ha). It is evident that pre-existing conditions for apple production within the municipality do exist. With the implementation of the necessary measures of soil/ land regulation, education of agricultural producers, and mindfulness of constraint factors hindering intensive production such as terrain slope, depth, rockiness and soil response, progress in production can be made. Key words: municipality of Bužim, soil suitability, apple, AEZ.

This research aimed to determine the isokinetic strength differences between two groups of athletes (karate and track-and-field athletics) and to analyse factors that possibly contribute to the differences. We examined possible differences in peak power output and power ratio between agonist and antagonist thigh muscles of the knee. The sample consisted of 20 respondents: karate athletes (n=10; age 19±2.4) and track-and-field athletes (n=10; age 18±2.6). For this study, a valid test (CV<5%) of the isokinetic strength output of the knee extensors and flexors, was used at the angular velocity of 60°/s. Isokinetic variables: Peak torque in extension for both legs (Nm); Peak torque in flexion for both legs (Nm); Total work for both legs (J); Strength deficit involved/uninvolved leg and agonist/antagonist ratio for involved and uninvolved leg. A t-test for independent samples was used to determine the differences. Statistical significance was set at the conventional 95%. In the sample of examined variables, the first tested group of athletes (karate) achieved higher power output values with the dominant leg, except in the case of the peak torque extensors. In the second tested group of athletes (track-and-field athletics), a higher power output values are registered with dominant leg, except in the case of the total work flexor with almost identical value of dominant and non-dominant leg. In the variables of the peak torque of the dominant leg (p=0.002) and the peak torque of the non-dominant leg (p=0.019), statistically significant differences were noted between two tested groups of athletes (p<0.01, p<0.05). The unilateral relationship of the dominant leg (p=.003) significantly differentiates two groups of athletes (p<0.01). The better performance of track-and-field athletes is probably the result of the specificity of the structure of their motor movement and greater muscular work in training and competition. In contrast, the lower results of peak torque and total work in karate athletes compared to track athletes do not necessarily mean situational inferiority. Evaluation and assessment of knee dynamic stabilizers’ isokinetic profile can lead to the optimal selection of training operators, during the construction of the overall training program for athletes. Results of different outputs of force and strength may indicate a differently shaped approach to training.

The use of geospatial technology at lower levels of education has become a global tendency. However, Bosnia and Herzegovina is a country that is virtually uncharted in this regard, and the present paper has the main purpose to change that fact. Results of a survey conducted among geography teachers place this country within the entry category. Different attitudes among various groups of teachers (based on gender, age and regional distribution) have also been tested. Although the general hypotheses could not be confirmed, certain specific differences have been found, such as in the use of virtual globes, theoretical knowledge of GIS and willingness to attend educational training courses.

Linear viscoelastic materials whose characteristics are suitable for description by the Prony series use experimental data to obtain the so-called “master” curve. The analysis of experimental results with the Prony model sometimes requires prior knowledge of the time parameters of the model ,, in order to make the corresponding module more suitable for use in analytical form. In this way, the existing model is optimized to some extent, while in this paper the approach is used that all parameters in the Prony series for (E i , τ i ) were determined using the well-known least squares method and its variations. The number of members in Prony’s series is initially smaller and increases proportionately. To determine the relaxation modulus using the Prony model, an example from an available article [1] was selected in this paper, while the performed experiment was used to determine the creep modulus. During the performance of the load experiment, the function of constant increase (ramp-test) was used. The previous experiment was done for the actual material ABS plastic (Acrylonitrile butaden styrene).