https://aseestant.ceon.rs/index.php/bnsr/issue/feedBulletin of Natural Sciences Research 2024-07-02T19:46:39+02:00Dejan M. Gurešićeditor@bulletinnsr.comSCIndeks Assistanthttps://aseestant.ceon.rs/index.php/bnsr/article/view/51559APPLICATION OF COMPRESSIVE SENSING TECHNIQUES FOR ADVANCED IMAGE PROCESSING AND DIGITAL IMAGE TRANSMISSION2024-06-28T18:28:31+02:00Nenad Stefanovićnenad.stefanovic@vs.rsBoban Sazdić-Jotićboban.sazdic.jotic@vs.rsVladimir Orlićvladimir.orlic@vlatacom.comVladimir Mladenovićvladimir.mladenovic@ftn.kg.ac.rsStefan Ćirkovićstefan.cirkovic@ftn.kg.ac.rs<p class="MsoNormal" style="text-align: justify; margin: 0cm 18.45pt .0001pt 14.2pt;"><strong><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif';">The field of compressive sensing (CS) has emerged as a transformative approach in the acquisition and processing of high-dimensional data. This paper presents a comprehensive study on the application of compressive sensing techniques to advanced image processing and digital image transmission. By leveraging the inherent sparsity in natural images, CS allows for significant reductions in the amount of data required for accurate reconstruction, thereby overcoming the limitations imposed by the traditional Shannon-Nyquist sampling theorem. We explore the theoretical foundations of CS, including the principles of sparsity and incoherence, and provide a detailed overview of the Orthogonal Matching Pursuit (OMP) algorithm, a prominent greedy algorithm used for sparse signal recovery. Experimental results demonstrate the efficacy of CS in improving image reconstruction quality, as evidenced by enhancements in peak signal-to-noise ratio (PSNR) and structural similarity index (SSIM). Additionally, we discuss the practical implementation of CS in single-pixel cameras and its potential impact on future imaging technologies. The findings suggest that CS offers a robust framework for efficient image acquisition and processing, making it a valuable tool for various applications in multimedia, medical imaging, and remote sensing.</span></strong></p>2024-06-28T18:23:50+02:00Copyright (c) 2024 Bulletin of Natural Sciences Research https://aseestant.ceon.rs/index.php/bnsr/article/view/50472RADON IN WATER FROM PRIVATE WELLS AND ITS CONTRIBUTION TO INTERNAL EXPOSURE OF POPULATION IN RURAL AREAS AT TOPLICA REGION, SOUTHERN SERBIA2024-07-02T19:46:39+02:00Biljana Vučkovićbiljana.vuckovic@pr.ac.rsIvana Penjiševićivana.penjisevic@pr.ac.rsNataša Todorovićnatasa.todorovic@df.uns.ac.rsJovana Nikolovjovana.nikolov@df.uns.ac.rsDragan Radovanovićdragan.radovanovic@pr.ac.rsAleksandar Valjarevićaleksandar.valjarevic@gef.bg.ac.rs<p class="MsoNormal" style="text-align: justify; margin: 0cm 18.45pt .0001pt 14.2pt;"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif'; mso-fareast-font-family: 'Times New Roman';">The results presented in this paper are part of the investigating of radon the concentrations from natural sources in the Toplica region. The results refer only to the radon concentrations in water from private captured wells at 12 locations. </span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif';">Radon concentration in water was measured by alpha spectrometry using the RAD 7 – RAD H2O system.</span></strong> <strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif'; mso-fareast-font-family: 'Times New Roman';">The range of radon concentration is from (</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif';">2.8</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: Symbol; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; color: black; mso-char-type: symbol; mso-symbol-font-family: Symbol;"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol;">±</span></span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif'; color: black;">1.2) to (</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif';">76.0</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: Symbol; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; color: black; mso-char-type: symbol; mso-symbol-font-family: Symbol;"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol;">±</span></span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif'; color: black;">4.0) kBq/m<sup>3</sup></span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif'; mso-fareast-font-family: 'Times New Roman';">, and the contribution of radon released from water to the air in the premises was in range (</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif';">0.8±0.3) to (22.8</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: Symbol; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; color: black; mso-char-type: symbol; mso-symbol-font-family: Symbol;"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol;">±</span></span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif'; color: black;">1.2) Bq/m<sup>3</sup>.</span></strong> <strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif'; color: black;">The annual effective doses of inhaled and ingested radon were determined, the mean values were (</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif';">114.8</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: Symbol; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; color: black; mso-char-type: symbol; mso-symbol-font-family: Symbol;"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol;">±</span></span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif'; color: black;">14.8) and (</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif';">3.2</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: Symbol; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; color: black; mso-char-type: symbol; mso-symbol-font-family: Symbol;"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol;">±</span></span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif'; color: black;">0.3)</span></strong><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; line-height: 107%; font-family: 'Times New Roman','serif';"> μSv/y.</span></strong></p>2024-07-02T19:44:15+02:00Copyright (c) 2024 Bulletin of Natural Sciences Research