RFLC and RVIC for Wireless Video Communication

Goran Bang,Goran Roth 대한전자공학회 1997 대한전자공학회 워크샵 Vol.1997 No.-

RFLC and RVLC for Wireless Video Communication

Goran Bang,Goran Roth 한국통신학회 1997 한국통신학회 워크샵 Vol.- No.-

Temperature Sensors Manufactured from Edible Materials Intended for Oral Cavity Operation

Goran M. Stojanović,Milan Radovanović,Sanja Kojić,Lazar Milić,Mitar Simić,Naturality Company,Raphael Georges Duval,Jelena Vukmirović,Bojan Petrović 한국정밀공학회 2024 International Journal of Precision Engineering and Vol.11 No.1

Following the circular economy concept, all areas of science, including electronics, require individual approach. The green electronics approach implies processing natural based materials for development of electronic components even for single use, so that waste does not exist. This paper describes the production of thermistors from 3 different types of edible materials, their testing in laboratory conditions, as well as the application for measuring the temperature in the human oral cavity. To make the thermistor, three types of natural materials were used (carrageenan, polyvinyl alcohol and apple pomace-based). After fabrication, materials were poured into molds. Aluminium foil contacts were placed so that the electrical characterization of the materials could be performed. Several parameters were measured: resistance (R), impedance (Z) and the phase angle (θ) as a function of frequency. In order to determine whether the thermistors have a positive or negative temperature coefficient and to determine their sensitivity, measurements were conducted at three different temperatures: 25 ℃ (room temperature), 37 ℃ (human body temperature), and 50 ℃. The thermistors demonstrated negative temperature coefficient behaviour. Additionally, it was demonstrated that the apple pomace-based thermistor can successfully measure healthy volunteer's temperature.

Lessons of Incremental Housing Two Chilean Case Studies

Goran Ivo Marinovic,Jin Baek 대한건축학회 2016 Architectural research Vol.18 No.4

Low-income housing policies in South Korea have been pursued mostly by providing public rental housing for less privileged social groups. In contrast to this notion of housing, this article argues for housing ownership by low-income families. Two examples of this ownership policy are found in Chile. Incremental housing involves an open-ended housing platform, which requires home-dwellers to complete the construction process themselves. This article aims to examine structural, spatial and formal characteristics of the incremental housing projects. Taking the perspective of the home-dweller during the incremental construction process, we evaluate the houses before and after customization. Thus, we use data from field-work conducted for seven months in the Santiago Metropolitan Area of Chile. Using qualitative methods such as observation, semi-structured interviews, and surveys we focus on the Elemental Lo Espejo incremental housing project and then compare it with the Las Higuera housing project. The latter is representative of the incremental houses delivered by the Chilean government. In comparing these two projects, we aim to articulate the lessons of incremental housing with the intention of suggesting possible future developments for a wider-reaching incremental housing program.

Loop bat family algorithm (Loop BFA) for constrained optimization

Goran R. Miodragović,Radovan R. Bulatović 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.8

The standard Bat algorithm (BA) is extended by introducing a bat family for the purpose of continuous repetition of the procedure forsearching for an optimal solution. The standard BA is modified by including the loop search in the zone of solutions. For each bat, ineach family, fine search according to the step of Lévy-flight is used for looking for an improved solution until the given constraints aresatisfied. Such solutions are compared for each bat family and the best one is selected. The loop bat family algorithm (Loop BFA) istested on five engineering examples known in the literature. The correctness and efficiency of the proposed algorithm are verified bygood results in these examples.

Non-linear incidental dynamics of frame structures

Goran N. Radoičić,Miomir LJ. Jovanović,Dragan Z. Marinković 국제구조공학회 2014 Structural Engineering and Mechanics, An Int'l Jou Vol.52 No.6

A simulation of failures on responsible elements is only one form of the extreme structural behavior analysis. By understanding the dynamic behavior in incidental situations, it is possible to make a special structural design from the point of the largest axial force, stress and redundancy. The numerical realization of one such simulation analysis was performed using FEM in this paper. The boundary parameters of transient analysis, such as overall structural damping coefficient, load accelerations, time of load fall and internal forces in the responsible structural elements, were determined on the basis of the dynamic experimental parameters. The structure eigenfrequencies were determined in modal analysis. In the study, the basic incidental models were set. The models were identified by many years of monitoring incidental situations and the most frequent human errors in work with heavy structures. The combined load models of structure are defined in the paper since the incidents simply arise as consequences of cumulative errors and failures. A feature of a combined model is that the single incident causes the next incident (consecutive timing) as well as that other simple dynamic actions are simultaneous. The structure was observed in three typical load positions taken from the crane passport (range-load). The obtained dynamic responses indicate the degree of structural sensitivity depending on the character of incident. The dynamic coefficient KD was adopted as a parameter for the evaluation of structural sensitivity.

Life-Curves of Inequality

Goran Therborn 한국사회학회 2015 韓國社會學 Vol.49 No.6

This paper outlines a general theory of inequality as multidimensional, driven by specific, inter-related bio-medical, cultural-psychological, and politico-economic processes, and of its systemic, and inter-personal inter-generational production. At the individual level, social inequality produces life-curves of widening gaps between advantage and disadvantage, as well as longer and shorter life-spans. This is illustrated and exemplified with international data and multidisciplinary findings on childhood, adolescence, adulthood, and old age.

Interstitial Cells of Cajal and Neural Structures in the Human Fetal Appendix

( Goran Radenkovic ),( Vladimir Petrovic ),( Dragoljub Zivanovic ),( Nenad Stoiljkovic ),( Dusan Sokolovic ),( Nikola Zivkovic ),( Dina Radenkovic ),( Aleksandra Velickov ),( Jovana Jovanovic ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2021 Journal of Neurogastroenterology and Motility (JNM Vol.27 No.1

Background/Aims The interstitial cells of Cajal (ICC) are located within and around the digestive tract’s muscle layers. They function as intestinal muscle pacemakers and aid in the modification of enteric neurotransmission. The appendix’s unique position requires an appropriate contraction pattern of its muscular wall to adequately evacuate its contents. We investigated the development and distribution of nervous structures and ICC in the human fetal appendix. Methods Specimens were exposed to anti-c-kit (CD117) antibodies to investigate ICC differentiation. Enteric plexuses were examined using anti-neuron-specific enolase, and the differentiation of smooth muscle cells was studied with anti-desmin antibodies. Results During weeks 13-14, numerous myenteric plexus ganglia form an almost uninterrupted sequence throughout the body and apex of the appendix. Fewer ganglia were present at the submucosal border of the circular muscle layer and within this layer. A large number of ganglia appear within the circular and longitudinal muscle layers in a later fetal period. The first ICC subtypes noted were of the myenteric plexus and the submucous plexus. In the later fetal period, the number of intramuscular ICC markedly rises, and this subtype becomes predominant. Conclusions The ICC and nervous structure distribution in the human fetal appendix are significantly different from all other parts of the small and large intestine. The organization of ICC and the enteric nervous system provides the basis for the specific contraction pattern of the muscular wall of the appendix. (J Neurogastroenterol Motil 2021;27:127-133)

Effect of Histological Inflammation on Total and Free Serum Prostate-Specific Antigen Values in Patients Without Clinically Detectable Prostate Cancer

Goran Stimac,Borislav Spajic,Ante Reljic,Josip Katusic,Alek Popovic,Igor Grubisic,Davor Tomas 대한비뇨의학회 2014 Investigative and Clinical Urology Vol.55 No.8

Purpose: We are often confronted with patients in the “gray zone” (prostate-specific antigen[PSA]<10 ng/mL) whose biopsies reveal no malignancy but only inflammation. We investigated the relationship between histological inflammation and total PSA(tPSA), free PSA (fPSA), and percentage of free PSA (f/tPSA) levels in patients withoutprostate cancer (PC). Materials and Methods: We studied 106 men with tPSA<10 ng/mL who had undergonebiopsy that was negative for PC and who had no clinical prostatitis. Inflammation observedat biopsies was scored for inflammation type in each biopsy core by use of afour-point scale and was then correlated with tPSA, fPSA, and f/tPSA. Results: Different patterns of inflammation were found in each set of biopsies. Regression factor analysis was used to form two groups according to inflammation type:more chronic and more acute. Median tPSA, fPSA, and f/tPSA levels in the more chronicand more acute inflammation groups were 6.4 ng/mL, 1.09 ng/mL, and 15%, and 7.3ng/mL, 0.79 ng/mL, and l2%, respectively. A significant difference was found in fPSA(p=0.003) and f/tPSA (p<0.001), whereas the difference in tPSA was not significant(p=0.200). Total PSA correlated with fPSA (r=0.4, p<0.001) but not with inflammationtype (r=0.12, p>0.010). A correlation existed between inflammation type and fPSA(r=–0.31, p=0.001) and f/tPSA (r=–0.43, p<0.001) in that the fPSA and f/tPSA were lowerin the group with more acute inflammation. Conclusions: Subclinical inflammation has a significant influence on fPSA in patientswith tPSA<10 ng/mL but without PC or clinical prostatitis. Subclinical inflammationis not characterized by elevated tPSA alone but also by a decreased fPSA, a tendencysimilar to that in PC.

Effects of Walnut-Rich Diet on Cation-Handling Proteins in the Heart of Healthy and Metabolically Compromised Male Rats

Goran Koricanac,Snezana Tepavcevic,Snjezana Romic,Manja Zec,Tijana Culafic,Mojca Stojiljkovic,Tamara Ivkovic,Marija Pantelic,Milan Kostic,Jelena Stanisic 한국식품영양과학회 2023 Journal of medicinal food Vol.26 No.11

The transport of cations in the cardiomyocytes, crucial for the functioning of the heart, can be affected bywalnut diet due to the high content of polyunsaturated fatty acids. Healthy and metabolically compromised rats (drinking 10%fructose solution) were subjected to a diet supplemented with 2.4 g of walnuts for 6 weeks to investigate the effect on proteinsinvolved in cation transport in the heart cells. Fructose increased the level of the a1 subunit of Na+/K+-ATPase and thephosphorylation of extracellular signal-regulated kinase 1/2 in the heart of control and walnut-eating rats, while elevatedL-type calcium channel a (LTCCa), sodium–calcium exchanger 1 (NCX1), and Maxi Ka level were observed only in rats thatdid not consume walnuts. However, walnuts significantly increased the cardiac content of LTCC, NCX1, and Maxi Ka, as wellas Kir6.1 and SUR2B subunits of KATP channel, but only in fructose-naive rats. In animals that drank fructose, a significantincreasing effect of walnuts was observed only in Akt kinase phosphorylation, which may be a part of the antiarrhythmicmechanism of decreasing cation currents in cardiomyocytes. The walnut diet-induced increase in LTCC and NCX1 expressionin healthy rats may indicate intense cardiac calcium turnover, whereas the effect on Kir6.1 and SUR2B subunits suggestsstimulation of KATP channel transport in the cardiac vasculature. The effects of walnuts on the cation-handling proteins in theheart, mostly limited to healthy animals, suggest the possible use of a walnut-supplemented diet in the prevention rather thanthe treatment of cardiological channelopathies.