8 results on '"Drakulić, S."'
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2. Definisanje sajber ratovanja
- Author
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Mladenović D. Dragan, Jovanović M. Danko, and Drakulić S. Mirjana
- Subjects
sajber ratovanje, sajber rat, sajber prostor, kibernetički sukob, informaciono ratovanje - Abstract
Sajber sukobi predstavljaju novu vrstu ratovanja koja se tehnološki veoma brzo razvija. Rezultat tog razvoja su sve češći i intenzivniji sajber napadi koje države pokreću na protivničke ciljeve i koji imaju širok spektar dejstva, od informacionih do fizičkog uništenja ciljeva. Međutim, sajber ratovanje se vodi primenom istih sredstava, tehnika i metoda kao i u slučaju sajber kriminala, terorizma i obaveštajnih aktivnosti i ima veoma specifičnu prirodu, koja omogućava državama da prikriveno pokreću napade na protivnika. Polazna tačka pri definisanju doktrina, procedura i standarda u oblasti sajber ratovanja je utvrđivanje njegove prave prirode. U ovom radu dat je doprinos tom nastojanju primenom analize postojećih državnih doktrina i međunarodne prakse u oblasti sajber ratovanja i utvrđivanju njegove nacionalno prihvatljivе definicije., Cyber conflicts represent a new kind of warfare that is technologically developing very rapidly. Such development results in more frequent and more intensive cyber attacks undertaken by states against adversary targets, with a wide range of diverse operations, from information operations to physical destruction of targets. Nevertheless, cyber warfare is waged through the application of the same means, techniques and methods as those used in cyber criminal, terrorism and intelligence activities. Moreover, it has a very specific nature that enables states to covertly initiate attacks against their adversaries. The starting point in defining doctrines, procedures and standards in the area of cyber warfare is determining its true nature. In this paper, a contribution to this effort was made through the analysis of the existing state doctrines and international practice in the area of cyber warfare towards the determination of its nationally acceptable definition.
- Published
- 2012
3. Tehnološki, vojni i društveni preduslovi primene sajber ratovanja
- Author
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Mladenović D. Dragan, Jovanović M. Danko, and Drakulić S. Mirjana
- Subjects
sajber rat, sajber ratovanje, sajberprostor, sajber bezbednost, kibernetički rat - Abstract
Sajber ratovanje je specifičan i nov oblik vođenja vojnih sukoba čija primena u međunarodnoj zajednici brzo raste. Međutim, njegova priroda je specifična i razlikuje se od svih do sada poznatih oblika ratovanja. Radi jasnijeg razumevanja prirode sajber ratovanja, u radu su obrađene osnovne grupe preduslova njegove široke primene i brzog razvoja sa tehnološkog, vojnog i društvenog aspekta. Razumevanje stvarne prirode sajber ratovanja neophodan je uslov za izgradnju nacionalnih kapaciteta za njegovo vođenje koji su vojno opravdani i usklađeni sa međunarodnim pravom. U radu su istraženi karakteristični slučajevi primene sajber ratovanja, od informaciono-propagandnih do fizičkog uništenja, s ciljem da se utvrde smernice za mogući razvoj sajber kapaciteta na nacionalnom nivou. Na osnovu analize ranijih slučajeva sajber ratovanja izvršeno je predviđanje budućih pravaca razvoja sajber ratovanja i analizirana neophodnost primene odgovarajućih metoda i tehnika odbrane od njih., Cyber warfare is a specific new form of military conflicts the use of which is growing rapidly in the international community. However, its nature is specific and differs from all previously known forms of warfare. For the purpose of clear understanding of the nature of cyber warfare, this paper covers the basic groups of preconditions for its broad application and fast development from technological, military and social aspects. Understanding the true nature of cyber warfare is a necessary condition for building national capacities for its application that are military justified and harmonized with the international law. The paper explores the characteristic instances of cyber warfare, ranging from information propaganda to physical destruction, with the goal to determine guidelines for the possible development of cyber capacities at the national level. Based on the analysis of previous cyber warfare cases, a prediction of future development directions is made and the necessity to apply suitable methods and techniques for defense against them is analysed.
- Published
- 2012
4. DEFINISANJE SAJBER RATOVANJA.
- Author
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Dragan, Mladenović D., Danko, Jovanović M., and Mirjana, Drakulić S.
- Subjects
INFORMATION warfare ,CYBERSPACE ,COMPUTER crimes ,MILITARY science ,MILITARY intelligence - Abstract
Copyright of Military Technical Courier / Vojnotehnicki Glasnik is the property of Military Technical Courier / Vojnotehnicki Glasnik and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2012
- Full Text
- View/download PDF
5. TEHNOLOŠKI, VOJNI I DRUŠTVENI PREDUSLOVI PRIMENE SAJBER RATOVANJA.
- Author
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Dragan, Mladenović D., Danko, Jovanović M., and Mirjana, Drakulić S.
- Subjects
INFORMATION warfare ,INTERNATIONAL law ,PROPAGANDA ,MILITARY readiness ,MILITARY science - Abstract
Copyright of Military Technical Courier / Vojnotehnicki Glasnik is the property of Military Technical Courier / Vojnotehnicki Glasnik and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2012
6. Temporal migration patterns and mating tactics influence size-assortative mating in Rana temporaria .
- Author
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Dittrich C, Rodríguez A, Segev O, Drakulić S, Feldhaar H, Vences M, and Rödel MO
- Abstract
Assortative mating is a common pattern in sexually reproducing species, but the mechanisms leading to assortment remain poorly understood. By using the European common frog ( Rana temporaria ) as a model, we aim to understand the mechanisms leading to size-assortative mating in amphibians. With data from natural populations collected over several years, we first show a consistent pattern of size-assortative mating across our 2 study populations. We subsequently ask if assortative mating may be explained by mate availability due to temporal segregation of migrating individuals with specific sizes. With additional experiments, we finally assess whether size-assortative mating is adaptive, i.e. influenced by mating competition among males, or by reduced fertilization in size-mismatched pairs. We find that size-assortative mating is in accordance with differences in mate availability during migration, where larger individuals of both sexes reach breeding ponds earlier than smaller individuals. We observe an indiscriminate mate choice behavior of small males and an advantage of larger males pairing with females during scramble competition. The tactic of small males, to be faster and less discriminative than large males, may increase their chances to get access to females. Experimental tests indicate that the fertilization success is not affected by size assortment. However, since female fecundity is highly correlated with body size, males preferring larger females should maximize their number of offspring. Therefore, we conclude that in this frog species mate choice is more complex than formerly believed.
- Published
- 2018
- Full Text
- View/download PDF
7. Population-specific effects of developmental temperature on body condition and jumping performance of a widespread European frog.
- Author
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Drakulić S, Feldhaar H, Lisičić D, Mioč M, Cizelj I, Seiler M, Spatz T, and Rödel MO
- Abstract
All physiological processes of ectotherms depend on environmental temperature. Thus, adaptation of physiological mechanisms to the thermal environments is important for achieving optimal performance and fitness. The European Common Frog, Rana temporaria, is widely distributed across different thermal habitats. This makes it an exceptional model for studying the adaptations to different thermal conditions. We raised tadpoles from Germany and Croatia at two constant temperature treatments (15°C, 20°C), and under natural temperature fluctuations (in outdoor treatments), and tested how different developmental temperatures affected developmental traits, that is, length of larval development, morphometrics, and body condition, as well as jumping performance of metamorphs. Our results revealed population-specific differences in developmental time, body condition, and jumping performance. Croatian frogs developed faster in all treatments, were heavier, in better body condition, and had longer hind limbs and better jumping abilities than German metamorphs. The populations further differed in thermal sensitivity of jumping performance. While metamorphs from Croatia increased their jumping performance with higher temperatures, German metamorphs reached their performance maximum at lower temperatures. These population-specific differences in common environments indicate local genetic adaptation, with southern populations being better adapted to higher temperatures than those from north of the Alps.
- Published
- 2016
- Full Text
- View/download PDF
8. Autonomic mechanisms underpinning the stress response in borderline hypertensive rats.
- Author
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Šarenac O, Lozić M, Drakulić S, Bajić D, Paton JF, Murphy D, and Japundžić-Žigon N
- Subjects
- Animals, Male, Rats, Rats, Inbred SHR, Rats, Wistar, Telemetry methods, Autonomic Nervous System physiopathology, Baroreflex physiology, Blood Pressure physiology, Heart Rate physiology, Hypertension physiopathology, Stress, Physiological physiology
- Abstract
This study investigates blood pressure (BP) and heart rate (HR) short-term variability and spontaneous baroreflex functioning in adult borderline hypertensive rats and normotensive control animals kept on normal-salt diet. Arterial pulse pressure was recorded by radio telemetry. Systolic BP, diastolic BP and HR variabilities and baroreflex were assessed by spectral analysis and the sequence method, respectively. In all experimental conditions (baseline and stress), borderline hypertensive rats exhibited higher BP, increased baroreflex sensitivity and resetting, relative to control animals. Acute shaker stress (single exposure to 200 cycles min-1 shaking platform) increased BP in both strains, while chronic shaker stress (3-day exposure to shaking platform) increased systolic BP in borderline hypertensive rats alone. Low- and high-frequency HR variability increased only in control animals in response to acute and chronic shaker (single exposure to restrainer) stress. Acute restraint stress increased BP, HR, low- and high-frequency variability of BP and HR in both strains to a greater extent than acute shaker stress. Only normotensive rats exhibited a reduced ratio of low- to high-frequency HR variability, pointing to domination of vagal cardiac control. In borderline hypertensive rats, but not in control animals, chronic restraint stress (9-day exposure to restrainer) increased low- and high-frequency BP and HR variability and their ratio, indicating a shift towards sympathetic cardiovascular control. It is concluded that maintenance of BP in borderline hypertensive rats in basal conditions and during stress is associated with enhanced baroreflex sensitivity and resetting. Imbalance in sympathovagal control was evident only during exposure of borderline hypertensive rats to stressors.
- Published
- 2011
- Full Text
- View/download PDF
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