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.

The subject of this paper is models of consociational democracy in Austria and Bosnia and Herzegovina. The aim is to define in a comparative analysis the similarities and differences between consociational systems of government in these two countries, their practice and scope. Based on these conclusions, we draw new knowledge in the field of activities and possibilities of consociational arrangements in the divided societies of modern Europe. The scientific justification of this paper is that through the analysis of different consociational democracies and their practical experiences, the scope of this form of democratic rule is assessed, and the conclusions are theoretically added to the existing fund of scientific knowledge about this phenomenon. The social contribution of the paper is in the fact that consociational democracy is an increasingly common solution for many divided societies and therefore the analysis of existing consociational democracies is a socially justified topic.

The main focus of disaster management is currently on disaster risk reduction activities. Mount Merapi in Indonesia is one of the most active volcanoes in the world with a four-year eruption cycle. The local government of the Sleman Regency has made several efforts to reduce the risk of impacts from the eruption of Mount Merapi. These efforts involve various elements in society. The purpose of this research is to identify the efforts made by the Sleman Regency Government in reducing the risk of the eruption of Mount Merapi and the factors that influence it. This research uses descriptive qualitative research methods with informants coming from the government, volunteers and the community. The findings of this study are the activity of risk reduction of eruption Merapi Mount in Sleman consists of physical and non-physical mitigation. Physical mitigation includes the construction of the Merapi Sabodam, construction of the Early Warning System, determination of evacuation routes and construction of refugee shelters. Non-physical mitigation includes the preparation of a contingency plan for the eruption of Mount Merapi, the formation of Destana (Disaster Resilient Village), the sister village and sister school program, the establishment of a disaster safe education unit, the establishment of the Operational Unit and the Implementing Unit for disaster management. The program is run by the government along with non-state actors to be affected by the starting conditions of each party, ability to combine the resources owned by each party, to shared information and commitment to a common purpose.

The way to clarify the concept of society role in local government affairs by implementing collaborative governance. Hartley, et al., had created the term ‘collaborative governance’ to highlight multi-stakeholder engagement across organizations as viable alternatives or additions to coordination with market competition and hierarchical solutions (Hartley, Sørensen, & Torfing, 2013). This research aims to analyze and describe Collaborative Governance in Increasing Tourism in the New Normal Era during Covid 19 Pandemic in Indonesia. The results show that in response to the Covid-19 Pandemic, the World Tourism Organization (UNWTO) in 2020 has revised the growth prospects of international tourists negative from 1% to 3%, while in Asia and Pacific will be the worst affected regions, with an expected drop in arrivals of between 9% and 12%. The tourist visits to Indonesia are slowly decreasing. Cumulatively from January to March in 2020, the number of tourists who came only reached 2.61 million people or dropped drastically by 30.62 percent; compared to the same period in the last year, 3.76 million people. When compared to February, the number of tourist arrivals decreased by 45.50 percent; While when compared to the same period last year the decline was recorded even more drastically, which is 64.11 percent. The decrease from the tourism sector is predicted to reach IDR. 60 trillion Rupiah. The Central Government through the Ministry of Tourism and Creative Economy, and supported by the Government at the Provincial/Regency/City level through the Tourism Office and tourism business entrepreneurs in the region is trying to prepare destinations in accordance with the “new normal” conditions post-Covid-19 in accordance with the principles of hygiene and excellent sanitization, as well as creating tourism destinations that are encouraged to continue in improving and increasingly aggressive in applying the principles of sustainable tourism development (resilience, sustainable, and responsible).

One of the indicators or characteristics of the regional autonomy successful is the creation of regional independence. Those efforts can be executed through the Village-Owned Enterprises (BUMDes). The purpose of this study is to describe alternative strategies for local economic development in Payakabung Village, North Indralaya Sub-District, Ogan Ilir District by applying SWOT analysis. This study is a descriptive quality research. The research site was conducted in Payakabung Village, North Indralaya Sub-District, Ogan Ilir District of South Sumatra. The focus of this research is based on the strategy management process, with SWOT analysis. The results of SWOT analysis that have been carried out as the basis for the formulation of alternative strategies include as follows; Capital optimization to increase activities operationalization, partnership necessity together with private company in the processing of agricultural land, the existence of training and incentives by using CSR funds, Marketing products by involving the private sector as one of the promotional agents, the Village Fund which becomes the capital activities can be used for research on improving the quality of BUMDes products, Product marketing using online-based media to expand the target market.

The way to clarify the concept of the human resources competence of The Indonesian National Police (POLRI) is believed to be a key factor in determining the success of the police organization. Currently, POLRI has implemented an open position promotion program which one of the stages uses the Assessment Center to exam managerial competence. This research aims to analyze the policies and impact of assessment center implementation in supporting of the open positions promotion. The Researchers apply qualitative approaches with data collection techniques in the form of observations, interviews and document studies. The results of the study findings concluded that the Assessment Center implementation policy in support of open promotion in the narrow sense has been implemented although incomplete. In a broad sense, the implementation of assessment center policies in supporting of open promotion has not been successful and has not given a positive impact. This is because The Indonesian National Police as a bureaucratic organization, does not fully have the organizational capacity that is the backbone of bureaucracy, which involves: organizational structure; mechanism of work; human resources; financial support as well as resources needed to work. These four elements have not been able to realize optimal conditions and support each other.

Village – Owned Enterprises (BUMDes) was developed to increase the village revenue and drive the people’s economy through resource and village asset management. The existence of BUMDes is expected to improve village potential and become a pillar of the community’s economy. Not only oriented on increasing the village local revenue, but BUMDes must also have a social mission to help the villagers, especially during the COVID-19 pandemic. The study method employed was descriptive qualitative, and the data were collected through interviews, observations, and documentation. Informants were selected through purposive sampling out of the various parties related to BUMDes in the Polanharjo Sub-district, Klaten District. The results of the study showed that the mass development of BUMDes as a top-down policy without any consideration of the local potential of each village has caused a lack of support from the community and has led to the lack of development of BUMDes, making many lapses into a stasis. However, there are a few BUMDes that were able to develop well, making them a motor for the village economy during the COVID-19 pandemic through their various business enterprises. The BUMDes units that have succeeded to grow and develop are those that could identify the local potentials and resources through various innovations, receive social support through their people’s participation and build partnerships with many parties such as the village government, private sector, and the community in the form of collaborative governance.

As a potential candidate for membership in the European Union and Bosnia and Herzegovina, a country committed to the Euro-Atlantic integration process has committed itself to strengthening the rule of law and strengthening institutions in the field of justice and home affairs. One of the important activities in this process is the adoption and implementation of public policies in the field of combating money laundering, bearing in mind that this social scourge in its manifestations is the greatest threat to the stability and smooth functioning of a country. Money laundering is a global problem of the twenty-first century. As a form of economic crime, the money laundering process is represented both nationally and internationally. 
Although there are a large number of definitions of money laundering, it can be said that it consists of shorter or longer movements of funds acquired through illegal activities, in order to obtain seemingly legal means through the cycle of transformation. The complexity of the fight against money laundering and the problems of combating various forms of money laundering go beyond the possibilities and efforts undertaken by the competent authorities and government institutions. All countries should go ahead of money launderers, that is, they should go ahead in designing and prescribing methods and ways of fighting, but they should also not allow criminals to use a corrupt and unregulated institutional framework and gain lucrative money laundering income.

Semarang, as the capital city of Central Java province, Indonesia, has been exercising its own diplomacy in pursuit of its interests related to economy and disaster. Under the leadership of mayor named Mr. Hendrar “Hendi” Prihadi, the city administration has been practicing city diplomacy as a means to attract both domestic and foreign investors by convening a business forum, called Semarang Business Forum (Sembiz), and to explore partnership in building the city’s disaster resilience by joining a city network, called 100 Resilient Cities (100RC). According to the argument by Keating (1999) in explaining Para diplomacy, this paper argues that Hendi administration’s strategies in exercising city diplomacy were shaped by its motives, as reflected in Regional Long Term Development Plan (RPJMD), and the opportunity structure in terms of existing regimes where the city could observe suitable cooperation. This paper finds that Hendi administration benefited from city diplomacy in solving local urban issues, such as the tidal and flash flooding problem in the coastal area of Semarang.