Tihomir Čuljak
Drones are most commonly known as unmanned aerial vehicles. They appeared about fifty years ago as toys, and about thirty years ago they began to be used for air reconnaissance. In the last ten years,...
There has been a lot of talk in recent years about the circular economy. It is an economy in which used products are used as raw materials for new products. In order for the processing of some waste t...
NASU is plagued by a problem. How to deliver a crane to the moon that should unload cargo from the cargo space of the lunar modules that would supply future lunar colonies? Existing cranes are heavy a...
On earth, many materials are used in construction. Some materials like wood are simply taken from the environment, while some materials are produced in large cement, brick, or iron factories. There ar...
The first programs were written on punched cards. Whether the program was written correctly could only be found out when the cards were placed in the reader and when it could be seen if it was working...
Around a billion people in the world have some form of disability. That’s about 15% of the world’s population. There are also many temporary invalids as a result of illness, injury or old age. Disable...
In the exploitation of metal and mineral mines, the raw material is usually in the form of sand. These sands contain valuable minerals that are important minerals in the production of many products ar...
In the case of accumulation lakes (1), especially artificial ones, a large problem is the deposition of sediments at the bottom of the accumulation lake, especially near the dam (2). Such lakes, in ad...
NASA has plans to resend people to the moon, but this time on a more permanent mission. They have to solve a lot of problems for this project. The most important problems are around the distribution,...
To date, several space stations have been built for the permanent residence of humans. They are made of solid material and in one piece taken into space to a location where they are placed at a certai...
Today, most mobile communication devices transmit data either through numerous repeaters located on taller buildings and poles. The new mobile 5G network will have to have repeaters every few hundred...
With the development of space technologies, it is increasingly likely that housing will soon have to be built for longer or shorter human stays on the moon. These colonizers will have to overcome a nu...
Many tourists visit ancient abandoned cities every day in Latin America. They remain caught up when they see the walls built with large stone blocks. They are so arranged that no jewels can be placed...
According to some satellite images, the land surface under vegetation increases with increasing CO2 levels in the air. The same footage shows a very large disappearance of forests, which disappear in...
For renewables, and especially for wind, the biggest problem is that energy is produced at one point and consumed at another time when consumers need it most. Therefore, there must be spare capacity i...
Many places around the world are planning to build floating tunnels. These are tunnels placed in water at a certain depth below the surface, or at the bottom of the sea. Typically, such tunnels are in...
Obelisk is a large monolithic stone block with four pages narrowing to the top. At the top is a small pyramid covered with electrodes, which is a mixture of gold and silver. The obelis were placed in...
Internet browsers or search engines are particular websites that can help to locate specific information from other sites. Information can mean web pages, images, movies, files, databases, social netw...
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