HORODNYTSIA TREASURE: VOLODYMYR SVIATOSLAVYCH'S SILVER COINS

The discovery of the Horodnytsia treasure took place in the following graduality. In the evening of 27rd of August 2020 near the village of Horodnytsia, Novohrad-Volynskyi district, Zhytomyr region the local resident Serhii Komar found the treasure of coins of Volodymyr Sviatoslavych (Volodymyr the Great, Volodymyr the Saint) and Sviatopolk Yaropolkovych (“Sviatopolk the Cursed”). The treasure find took place in the forest near the river Sluch while extraction of the sand for household needs. In the morning of 28rd of August the treasure was transferred to the local government authorities – the village council of Horodnytsia according to the Ukrainian law. The expertise of the treasure was carried out at place of find by Dr. Oleksander Alf’orov – the researcher of the Institute of History of Ukraine of the National Academy of Sciences of Ukraine. The treasure consisted of 32 silver coins (sribnyks) inclusively 26 coins of Volodymyr Sviatoslavych and 6 coins of Sviatopolk Yaropolkovych. Next day the group of scientists with the chief of the Zhytomyr Archaeological Expedition of the Institute of Archeology of the National Academy of Sciences of Ukraine, Dr. Andrii Petrauskas and the representative of the Ministry of Culture and Information Policy of Ukraine, the head of the Department of permitting and approval documentation in the branch of the cultural heritage protection – Dr. Bohdan Motsia and the head of the Early Iron Age Archeology department of the National Museum of Ukrainian History – Dr. Serhii Didenko and the research fellow of the Institute of History of the National Academy of Sciences of Ukraine – Dr. Oleksander Alf’orov and the director of the Novohrad-Volynskyi Local Lore Museum – Olena Zhovtyuk and the workmate of the Zhytomyr Archaeological Expedition of the Institute of Archeology of the National Academy of Sciences of Ukraine – Oleksander Minaev. At that place after the professional archeological excavations was discovered the traces of the pit where the treasure was placed. Additionally one more coin and 5 fragments were discovered during the excavation using a metal detector. Thus, on 29th of August 2020, the Horodnytsia treasure numbered 38 coins: 31 sribnyks of Volodymyr the Great (II-IV coin types according to Ivan Tolstoy’s the typological classification), and 7 sribnyks of Sviatopolk Yaropolkovych (all three known coin types). Since the discovery of the Kyiv treasure in 1876, the Horodnytsia treasure is the largest. Analyzing the complex we can suggest that its hoarding took place during the reign of Sviatopolk Yaropolkovych or possibly after his death. Thus, all of the sribnyks of Volodymyr the Great are represent by three of the four types of prince’s issues. Generally speaking, the Type II numbered 6 pieces, Type III numbered 16 pieces and Type IV numbered 9 pieces. And the Type I is absent in the hoard. 10 coins are minted by previously unknown die pairs (in the treasure №№ 10, 11, 12, 14, 16, 20, 21, 32, 34, 38). Additionally interesting are 2 coins with the unknown die combination (in the treasure №№ 15, 22). Their obverses are already published but the reverses are being published for the first time. Thus, 31 sribnyks were investigated and ten of them are minted by previously unknown die pairs and two by unknown die combinations. Since the discovery of the Kyiv treasure in 1876, the Horodnytsia treasure is the largest, as well as one that can be classified as authentic, which is additionally confirmed by the discovery of coins at the place of the treasury find. The unique feature of the Horodnytsia treasure can be considered that the place of its discovery was examined archaeologically: the peculiarities of its topography, conditions of occurrence, stratigraphy and location in the settlement system of the region were revealed. It should be underlined that the treasure was found in the region, where the sribnyks of Volodymyr and Sviatopolk were previously unknown among the coin finds. Unlike the previous finds of sribnyks, the Horodnytsia treasure was not transferred to the private collections abroad, but replenished the museum fund of Ukraine. The further research of the treasure with the use of the newest modern technologies will increase the information potential of this treasure.

Hradiště u Mařína (okr. Svitavy) a jeho širší zázemí ve světle kovových artefaktů z 6.–10. století / Hillfort near Mařín (East Bohemia) and its broad hinterland in light of metal artefacts from the 6th to 10th century AD

The article evaluates the results of systematic metal detector surveys from the borderland between east Bohemia and northwest Moravia over the past fifteen years, supplemented with a geophysical survey of early medieval hillfort near Mařín (Svitavy district). The conducted surveys have produced imports of Byzantine and Carolingian origin (strap ends, loops, spear tip) from the 7th to 9th century, with cast ornaments of the Late Avar type from the 8th century occurring in the greatest numbers. The spatial distribution of early medieval artefacts outside the traditional settlement territory shows ties to defunct roads preserved in the form of sunken lanes.

An Improved Chaotic Detection System for Metal Detectors

This paper first applies a chaotic system-Duffing oscillator to a metal detector, and uses RHR algorithm to compute two Lyapunov characteristics exponents of the Duffing system. In this way, the two Lyapunov characteristic exponents can help to judge the Duffing system being chaotic or not quantitatively. And also help to get the threshold value more accurately. Then a simulation model of Duffing system fit for detectors is established by Matlab. Simulation results indicate that an suitable Duffing system can improve the sensitivity of a detector effectively.

IoT platform based Smart Assistant for Surveillance

Surveillance operations designed to be carried out by a robotic vehicle for entry into an area of higher risks and perform hazardous tasks form the core of this work. The system is integrated with a robotic vehicle that is controlled through a virtual interface and well supported by live video streaming. Here, the motion detection sensor is used as a simple but powerful human presence detector and alarm trigger. Also, the design has a metal detector and gas detecting sensor that can provide precaution against potential landmines present in the operations area and presence of chemicals, high energy materials or poisonous gases on regular and event-based occurrence. The real-time data of the gas sensor is stored in the local machine and also uses a speech recognition system developed using Raspberry Pi microcomputer to detect audio signals. It generates routine alarms on special/unknown/ first time patterns of audio threats. The system is designed using low-cost components.

Review Paper on Microcontroller Based Object Sorting

Sorting of products is a very difficult industrial process. Continuous manual sorting creates consistency issues. This paper describes a working prototype designed for automatic sorting of objects based on the metal detector KY-036 sensor was used to detect the colour of the product and the PIC16F628A microcontroller was used to control the overall process. The identification of the colour is based on the frequency analysis of the output of TCS230 sensor. One conveyor belts were used, it controlled by separate DC motors. The belt is for placing the product to be analysed by the colour sensor, having separated compartments, in order to separate the products. The experimental results promise that the prototype will fulfil the needs for higher production and precise quality in the field of automation.

Profil Usaha Industri Garmen “Vandev” di Kota Malang (Studi Usaha Industri Garmen “Vandev” di Kota Malang)

Managing a business such as a garment must have clear organizational structure, financial management, and production implementation so that company goals can be achieved according to the targets set by a company. The purpose of this research is to describe the business studies in "Vandev" Garments, especially in the production implementation section, which includes the manufacturing process of 3 products, namely jackets, jersey products, and shirt products. In this study, researchers used a descriptive research design with a qualitative approach. Checking the validity of the findings using source triangulation and triangulation techniques Based on the results of the researcher's findings that, all implementation of the production section is in accordance with the Indonesian National Work Competency Standards starting from the process of preparing product samples, the pattern making process, the process of spreading cloth, the process of cutting cloth, the process of numbering the materials, grouping the materials that have been given number, screen printing / embroidery, sewing process, finishing, cleaning clothes from thread remnants (trimming), packaging ironing process. The production implementation process is carried out in each worker's home, so that quality control is carried out every 2 days. Even though production is carried out in each worker's house, it does not change the quality of the product. When the trimming process uses the manual method instead of using a metal detector machine, you must be more careful in checking the product. The product marketing process is not only from within the country but has reached abroad. Suggestions for Garments "Vandev" regarding production management as input to further improve the skills of production employees. The last suggestion is for other researchers that this research can be an input and a reference for similar research but with a more detailed and more detailed discussion of the garment business study, so that it can add new insights for other researchers. Mengelola suatu usaha seperti garmen harus jelas struktur organisasinya, pengelolaan keuangan, serta pelaksanaan produksinya agar tujuan perusahaan bisa tercapai sesuai target yang ditentukan suatu perusahaan tersebut. Tujuan dari penelitian ini untuk mendeskripsikan studi usaha yang ada di Garmen “Vandev” terutama pada bagian pelaksanaan produksi meliputi proses pembuatan 3 produk yaitu jaket, produk jersey, dan produk kemeja. Pada penelitian ini peneliti menggunakan rancangan penelitian deskriptif dengan pendekatan kualitatif. Pengumpulan data yang diperoleh peneliti mulai dari proses wawancara 2 karyawan dan 1 pemilik garmen, observasi saat proses produksi berlangsung, serta dokumentasi saat proses produksi. Pengecekan keabsahan temuan menggunakan triangulasi sumber dan triangulasi teknik. Berdasarkan hasil temuan penelti bahwa, semua pelaksanaan bagian produksi telah sesuai dengan Standar Kompetensi Kerja Nasional Indonesia mulai dari proses menyiapkan contoh produk (sample), proses pembuatan pola, proses mengelar kain, proses memotong kain, proses penomeran pada bahan, pengelompokkan bahan yang sudah diberi nomer, sablon/bordir, proses menjahit, finishing, membersihkan pakaian dari sisa-sisa benang (trimming), proses penyetrikaan pengemasan. Proses pelaksanan produksi dilakukan di rumah masing-masing pekerja, sehingga quality control dilakukan setiap 2 hari sekali. Meskipun produksi dilakukan di masing-masing rumah pekerja tidak merubah kualitas produk tersebut. Saat proses trimming menggunakan cara manual bukan menggunakan mesin metal detector sehingga harus lebih teliti dalam memeriksa produknya. Proses pemasaran produk bukan hanya dari dalam negeri melainkan sudah sampai ke luar negeri. Saran bagi Garmen “Vandev” mengenai pengelolaan produksi sebagai masukan untuk lebih meningkatkan keterampilan para karyawan bagian produksi. Saran yang terakhir yaitu bagi peneliti lain bahwa penelitian ini bisa menjadi masukan serta menjadi referensi untuk penelitian sejenisnya namun dengan pembahasan yang lebih diperinci dan lebih detail mengenai studi usaha garmen, sehingga dapat menambah wawasan baru bagi peneliti lainnya.

Časně eneolitické depozitum v Bílých Karpatech na moravsko-slovenském pomezí

In 2017, a relatively small copper artefact hoard was found using a metal detector just a few metres from the border between the Czech Republic and the Slovak Republic. This was on a distinctive slope on the Moravian side of the White Carpathians, at a relatively high altitude (746 m) in the cadastral area of the municipality of Lopeník. The hoard was lent for documenting by the finder and then returned to them. It contained three flat Jordanów type axes, a Şiria type hammer axe (only the second find in Moravia) and, most probably, raw material in a unique form of two discs of flat copper strip coiled into the shape of a pyramidal spiral. Some of the items were made of pure copper (with the presumed source in the southern part of the Carpathian Basin), some of a material similar to Nógrádmarcal antimony copper, forwhich a Slovak origin is considered. Based on the presence of several Jordanów type axes, we date the hoard to the Early Eneolithic and link it to the bearers of the Jordanów culture. Due to its location, the hoard is further distinctive evidence of transport corridors passing from the Carpathian Basin via the White Carpathians, where most parallels to the artefacts under study have been found. The presence of the two “strip material” discs is completely atypical.

ANALYSIS OF THE CURRENT STATE, CHARACTERISTICS AND PROSPECTS OF DEVELOPMENT OF EXPLOSIVE ORDNANCE DETECTION SENSORS MOUNTED ON UNMANNED AERIAL SYSTEMS

In recent years, the international community has become increasingly aware of the scale and severity of the problems posed by landmines and explosive remnants of war, including unexploded ordnance, gradually agreeing that this is a global problem that requires international concerted actions [1]. Significant excess of pace of development and intensity of mines use in comparison with the means of demining determine the urgency of the problem of ensuring the required level of their technical perfection. At the same time, special attention should be paid to ensuring the required level of quality of demining processes, reducing to a minimum level of explosive threats and cost of demining [2]. In modern economic conditions, the high efficiency of UXO detection in a certain area with relatively minimal cost of material and human resources is of great importance. The article analyzes the possibility of detecting explosive ordnance using a thermal imager, hyperspectral camera, magnetometer, metal detector which are installed on an unmanned aerial system (UAS). In addition, there was given consideration to the properties of sensors for detecting explosive ordnance which will ensure their full use during humanitarian demining: performance, transportability, survivability, reliability, failure-free, durability, maintainability, storage ability, cost effectiveness. Explosive ordnance detection sensors mounted on UAS must have their own navigation system or be connected to an on-board navigation system that links information from the sensors to the terrain. It must be possible to determine the coordinates of any object after landing an UAS and process information from the sensors. The calculations were made regarding the effectiveness of actions for searching and detecting explosive ordnance using an unmanned aerial system.

Geophysical search for fragments of the Sterlitamak meteorite

Relevance is determined by the fact that meteorites are of great importance for the direct study of the substance of the Universe, therefore, when new meteorites fall, maximum efforts are made to detect them and study the conditions of the fall. The purpose of the work is to further study the meteorite crater and search for large fragments of the Sterlitamak meteorite not found at the first stage of study using geophysical methods. The story of the fall and searches for the main fragment of the Sterlitamak meteorite, which fell on August 17, 1990 at 23 h 25 min, on the field of the Sterlitamak state farm is described. When it fell, a crater with a diameter of 10 m and a depth of 4 m was formed. The fall was accompanied by a bright glow and thunderous rumbles. A glow was observed over the crater in the dark. A high-speed searching for the meteorite was organized by collecting meteorite debris around the crater. At the same time, a mine detector was used. The crater was excavated with an excavator to a depth of 18–20 m. Fragments weighing 6.6; 3.06; 0.875; 0.363 kg were found. A year later, the main body weighing 315 kg was accidentally found in the dumps. Chemical analysis of the substance showed that it is an iron-nickel meteorite, 98% of the thickness are the minerals kamacite, tenite and schreibersite. Results. In 2014–2015, the authors carried out magnetic surveying around the crater and on the ice of the lake, which was formed at the excavation site, in order to search for fragments of the meteorite, which were probably missed at the initial stage. Maps of the magnetic field and terrain of the crater are given. Magnetic anomalies are identified, which are presumably associated with new fragments of the meteorite. The probable depths of the meteorite fragments are 2–4 m. In-depth sections of the magnetization for these anomalies obtained by the method of magnetic tomography, are given, as well as the results of a surface survey of the dump area using a metal detector. Weakly magnetic samples were found containing sprayed metal and metal balls with a diameter of 0.5–1.0 mm. These samples originally formed a zone of impact metamorphism, which was destroyed by excavation operations. It is shown that the territory is promising for searching for new large fragments of the meteorite and studying the processes of impact metamorphism. It is planned to further study the crater by means of electrical exploration and GPR sounding.