The adsorption process by metal oxide nanoparticles has been investigated an effective agent for removing organic and inorganic contaminants from water and wastewater. In this study, iron oxide nanoparticles were synthesized in the presence of moringa oliefera pods as adsorbent for lead, copper and cadmium ions adsorption. Moringa oliefera pods biochar with Fe3O4 particles precipitated on the surface of biochar was synthetized by co-precipitation method. Batch adsorption method was used, and heavy metal ions percentage recovery was measured using ICP-OES. Effect of various parameters such as contact time, pH, metal concentration and adsorbent dosage was determined on the removal efficiency. The maximum adsorption capacities of Pb2+, Cd2+, and Cu2+ by MMC were 31.46 mg·g−1, 29.05 mg·g−1 and 27.66 mg·g−1, respectively. The Langmuir and Freundlich isotherm equations were used to analyze the equilibrium isotherm data. The adsorption process fit the second-order kinetics well in all cases, and the Langmuir isotherm equation fit the experimental data well.

The paper has the main goal to determine whether there is a statistically significant connection between early created affective relationship between parents and children and later partner relationships. The research was conducted on a sample of 136 respondents, 75 women and 61 men. The following questionnaires were used in this research: a structured questionnaire for sociodemographic and family data (gender, education, marital status, completeness of the family, family functionality, upbringing, alcoholism in the family during childhood and psychiatric diseases), a questionnaire about family affective attachment and the scale of passive dependence in partner relationships. The data were collected via social networks. The research results confirmed tre expected frequency distribution of the four patterns of affective attachment in our sample. Also, it was shown that respondents of different patterns of family affective attachment discriminate in the level of passive dependence in partner relationships. According to the data obtained through statistical processing, respondents with an occupied attachment pattern achieve the highest scores on the Questionnaire of Passive Dependence in Partner Relationships, while securely attached respondents achieve the lowest scores. Although insecurely attached subjects achieved higher scores on the mentioned questionnaire than securely attached subjects, this difference was not statistically significant, and that is why our third hypothesis was rejected.

Digitization of public administration is a choice that has no alternative. The analysis of public administration in Bosnia and Herzegovina was research through the trends of changes in public administration and refers to: working conditions, access to work execution, developments with IT personnel, business conditions, investments, needs for new technologies, equipment and security. The key factor in every public administration is personnel. In the paper, we have presented an analysis of the employment of IT personnel at the level of B&H and the facts that emerged from the conducted analyses. Management of IT personnel, their need, recruitment and stimulation in public administration is a big challenge. An analysis of the current situation, trends and solutions is given through the available data. In order to digitize public administration, investments are also needed, of course these investments should be well thought out and guided by examples of good practice. Based on available data, analyses of investments in ICT in public administration at the level of institutions of B&H and Brčko District were carried out. An example of good practice was presented and solutions were given.

Mobbing is a behaviour whose aim is to underestimate and degrade other human beings by means of malevolent language and obscure cruel acts, which gradually undermine one’s proper functioning and affect both one’s mental and physical health (Kostelić-Martić, 2005). Well-being at work refers to all aspects of employees’ workplace life, from how they feel, what their working environment is like, safety at work including physical and psychological safety, job satisfaction, involvement in work and the position they have in the organization. The research problem refers to the examination of the connection between the perception of mobbing and the well-being at work of employees. Individuals who perceive mobbing as present in the organization and who are exposed to this type of stress, have impaired well-being. According to earlier findings, mobbing significantly affects the well-being of individuals at work in a way that impairs it, whereby they experience various psychological disturbances and are thrown out of work activities, because they stop adequately performing work tasks. Also, people who experience mobbing have a decline on motivation, work efficiency, a drop in the feeling of fulfillment, loss of trust, they complain of fatigue and feelings of anger and frustration. Two measurement instruments were used in the research: the mobbing perception scale and the Work Well-being Scale – WBWS, which have satisfactory measurement characteristics. The survey was conducted via an anonymous internet questionnaire, and a representative sample of employees in Bosnia and Herzegovina was used (n=273). The data thus obtained indicates that, statistically, the perception of mobbing is significantly negatively related to well-being (rho=-.382, p<.01), and its two aspects: positive affects (rho=-.531, p<.01), a feeling of fulfillment (rho=-.337, p<.01), and positively related to the negative effects aspect (rho=.592, p<.01), which confirms both the starting hypothesis and its sub-hypotheses. The perception of mobbing in the workplace negatively affects the well-being at work, i.e. higher levels of subjective perception of mobbing go hand in hand with lower levels of well-being at work. Furthermore, higher levels of the perception of mobbing are accompanied with lower levels of positive affects and feeling of fulfillment, and higher levels of negative affects.

Although the consequences of mobbing are felt, to the greatest extent, on an individual level, there are inevitable negative consequences on the organizational level as well. As mobbing has a negative effect on the well-being at work of an individual, it also adversely affects the work and results of the entire organization.

Precision agriculture is becoming increasingly important in modern agriculture as it allows farmers to optimize production and increase yields. This includes the use of sensors and technologies to collect and analyze data on soil, crops, weather, and other relevant factors. However, existing technology still has limitations such as accuracy and coverage over large areas. In order to solve this, new sensors and technologies are being developed, especially those based on artificial intelligence and machine learning, which allow for greater accuracy in data collection. In addition, new technologies such as drones and satellite imagery are being used to map crops and optimize agricultural production. This paper analyzes some of the latest developments in precision agriculture, providing insight into the future development and application of this technology. This work is particularly relevant to farmers, researchers, and companies involved in the development of sensors and technologies for precision agriculture.

This paper aims to highlight the importance of defining the dimensions of service quality and their impact on the satisfaction and loyalty of users of banking services in the banking sector of the Republic of Croatia. The study focuses on service quality parameters and customer satisfaction. The paper aims to examine discrepancies between expected and perceived attributes of banking services (Servqual model) on a sample of 130 respondents from the Republic of Croatia. Special objectives include examining the differences in the expression of scores on the dimensions of the expected and observed ABS scales in relation to the socio-demographic variables in the research (gender, age, professional education…etc). Based on the empirical study, it can be concluded that all service quality parameters play a vital role in customer satisfaction. The research results indicate that all five key dimensions of Servqual – tangibility, reliability, accountability, security, and empathy, are significantly and positively related to the overall Servqual perceived by users.

The word rehabilitation is of Latin origin (sanacio) and means treatment, from the point of view of the economy of the company, rehabilitation means economic and technical-organizational measures that should contribute to the recovery of the company, in the sense of making it liquid and profitable again. A company is considered sick if, in the long run, it is unable to meet its obligations and operates at a loss. The causes of the disease can be external and internal. Financial difficulties, manifested in illiquidity and unprofitability, cause the need for rehabilitation. Initiation of remediation presupposes remediation eligibility, which exists if permanent recovery of the company is possible. Determining the suitability of rehabilitation involves examination and selection of measures, the implementation of which ensures the permanent recovery of the company, in the sense of re-establishing the financial balance and returning to the profit zone.

This paper explores the food industry business market as an example, highlighting the key role of market research in successful economic recovery. Through this example, market research becomes a fundamental framework for identifying the changes that a company needs to implement in its operations in order to become more competitive. The example will show the market research of companies from the food industry. There is no successful economic rehabilitation without market research. This example can serve as a framework for market research, which provides answers to the question of what the company needs to change in its business in order to be more successful than the competition. The research results have significant implications for managers, experts and political decision-makers, providing them with information necessary for effective management of financial crises and ensuring the stability of companies, as well as a faster understanding of the competitive business environment.

The laws in Bosnia and Herzegovina that partially regulate the subject areas are outdated, long since overcome and almost completely non-functional, which effectively prevents the introduction of new technologies, which are becoming more and more convergent day by day with the development of digital services that are based on various types of electronic communication infrastructure. This type of legislation in Bosnia and Herzegovina discourages investors from investing in the development of communication infrastructure, which ultimately leads to limited service or lowquality service for the citizens of Bosnia and Herzegovina. High-quality and modern regulation of the field of electronic communications is achieved first of all so that all legislative levels in Bosnia and Herzegovina, in accordance with their constitutional competences, pass complex and detailed laws that will regulate the field of electronic communications, following the example of the legislative achievements of the European Union in this areas. Bearing in mind the past experiences in Bosnia and Herzegovina, probably a more functional way is for all legislative levels in Bosnia and Herzegovina, in accordance with their constitutional competences, to pass laws that will regulate the field of electronic communications in such a way as to prescribe the basic principles and basic frameworks of regulation this area, again following the example of the legislative achievements of the European Union in this area.

This paper presents the binary symmetric channel as a common model of the communication channel used in theory of coding and theory of information. Since there is no noise in the channel, the data transmission delay is very small, which is why data can be transmitted quickly and in real time, without many errors, which greatly determines its practical application. Therefore, the theoretical basis of the functioning of the channel itself and its practical advantages will be presented in the text. The concept of binary coding will also be explained with the use of block codes that create the possibility of correcting eventual errors, as well as the application of a binary symmetric channel in improving signal interference when using a wireless network.

Understanding elliptic curves contributed to solving mathematical problems in number theory that had been unsolved for centuries. Elliptic curves were also used in solving one of the millennial problems, which is Fermat's last theorem. They are also connected with many hypotheses and problems in mathematics that have yet to be solved. Elliptic curves defined over finite fields are widely used in public key cryptography, since they have proven to be groups that have the best properties for implementing the Diffie-Hellman protocol. This article provides an overview of the theoretical assumptions that are necessary for the development of cryptographic algorithms based on elliptic curve cryptography, which includes defining elliptic curves, defining the properties of arithmetic operations on elliptic curves used in cryptography with reference to curves defined over finite fields.