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Factors triggering landslide occurrence on the Zemun loess plateau, Belgrade area, Serbia
No full textAmong the numerous factors that trigger landslide events, the anthropogenic impact caused by inadequate planning and faulty land use in urban areas is increasing. The Zemun settlement on the northern outskirts of Belgrade has experienced a number of landslides in the last three decades, endangering buildings and roads, and claiming human lives, particularly in the case of the 2010/2011 landslides. Selected meteorological parameters were used to calculate rainfall erosivity indices such as Precipitation Concentration Index and Modified Fournier Index over the period 1991-2015. Drought indices, Lang aridity index and Palfai Drought Index were calculated as well. Mann-Kendall trend test was applied to identify potential rising and/or declining trends both in meteorological parameters and calculated indices. Trend analysis of the annual and seasonal scales yielded a statistically significant trend in the spring time series. Stable arid and pronounced drought conditions were recorded. The modified Fournier index based on monthly mean values yields moderate aggressiveness, with several extreme values indicating very high erosivity classes, especially for 2010/2011. The geological substrate is predominantly loess and hence highly susceptible to erosion and slope failure when climatological conditions are suitable. Accelerated urbanization at the end of the last century reduced vegetation cover, intensified pressure on the vertical loess slope, and lacked suitable rain drainage systems so that surface-water runoff was directed into the porous loess, thereby endangering slope stability. We proposed a geomorphic model to describe the nature of the erosional processes on the loess cliffs of the Zemun loess plateau. Results from this study have implications for mitigation strategies
An Approach to Determining the Importance of Model Criteria in Certifying a City as Business-Friendly
No full textOne of the key problems in the application of multicriteria analysis methods is identifying the importance of the model criteria. The relevance and validity of the decisions are directly conditioned by the relevance of a given set of criteria used for evaluating alternatives, and the correct determination of the weights of these criteria. Several methodologies have been developed to calculate the importance of each criterion for a given problem. All methodologies are classified into two main groups: subjective and objective. In this paper, we present a new procedure to integrate two recognized methods for determining the weights of factors-the analytic hierarchy method as a subjective method and entropy as an objective method. We apply our methodology to a contemporary local economic problem in Serbia-the process of certifying cities and municipalities as favorable to business. We also discuss its implementation in a software tool on a local government website
Etiološka dimenzija nezakonite upotrebe sredstava prinude u postupanju policije
Get PDFCoercion is undoubtedly the most explicit characteristic of police profession, which is often the base for defining its essence. It is, at the same time, the most delicate segment of police acts, having in mind that its use seriously interferes with human rights and freedoms. Therefore, it is not surprising that most researchers, in their quest to understand the work of the police and system of values of its members, are mostly focused on some of the aspects of using coercion. Although this paper is one in the series of such works, it still offers somewhat different approach to the concrete phenomenon in comparison to the one that dominates here, where the focus is mostly on discussing legal aspects and tactical-technical characteristics of police coercion. Due to its complexity and delicate nature, this topic requires a wider scientific approach, such as the one fostered within criminological perspective. If we add the fact that this perspective of police coercion is quite neglected in our literature, the writing of this paper gets its justification. However, its purpose and demanding scope force us to focus only on one criminological aspect of the concrete phenomenon. To that regard, discussion about aetiological dimension of illegal use of coercion measures seemed especially important. Thereby, due to its exceptionally complex causality, it was necessary to use multifactor approach in explaining the how this phenomenon occurs. Having this in mind, the paper points to some of the most important factors of illegal use of force in the acts of the police by looking at their mutual influence and contribution, firstly at general level, and then at the level of individual forms of this phenomenon in police such as brutality, torture and illegal deprivation of life.Prinuda je nesumnjivo najeksplicitnije obeležje policijske profesije kroz koju se najčešće i definiše njena suština. Ona je ujedno i najdelikatniji segment postupanja policije, budući da se njenom primenom najozbiljnije zadire u sferu ljudskih prava i sloboda. Stoga i ne čudi zašto se većina istraživača, tragajući za razumevanjem rada policije i sistema vrednosti njenih pripadnika, uglavnom fokusira na neki od aspekata primene prinude. Zbog njene složenosti ova teme zahteva jedan širok naučni pristup, kao što je recimo onaj koji se neguje unutar kriminološke perspektive. Ako ovome dodamo činjenicu da je u našoj literaturi prilično zapostavljena ova perspektiva policijske prinude time i pisanje ovog rada dobija svoju opravdanost. Međutim, njegova svrha i zahtevan obim primoravaju nas da se u radu posvetimo samo jednom od kriminoloških aspekata konkretnog fenomena. U tom smislu nam se posebno važnim činilo razmatranje etiološke dimenzije nezakonite upotrebe sredstava prinude
Mogućnosti i ograničenja procene opšteg rizika od nasilja u porodici primenom matrica verovatnoća i posledica
Get PDFBy comparing the risk theory and the relevant standard with the Law on the Prevention of Domestic Violence (Law), one comes to the conclusion that risk management, especially in the domain of assessment, is based on qualitative methods of analysis. Thus, the potential for the application of semi-quantitative and quantitative risk analysis methods in the application of the said regulation is not used. As it is too ambitious to problematize the purpose and potential for the implementation of both types of risk analysis methods envisioned by the Law in one paper, this study deals with possibilities and limitations of the conversion of qualitative into quantitative data in the function of overall risk assessment in the doctrine and the practice of preventing domestic violence in the Republic of Serbia. More precisely, the paper has identified the purpose, possibilities, limitations and the proposal of their overcoming, in the implication of the matrices of probability and consequences, as a semi-quantitative method of analyzing the general risk in the doctrine and practice of preventing domestic violence in the mentioned spatial framework. This contributes to the creation of conditions that support effective implementation of the Law, which are not foreseen as a potential for improving the doctrine and practice of preventing domestic violence by using matrices of probability and consequences, while recognizing the identified limitations. The verification of this research creates a starting point for the development of standards for the quantification of the general risk of domestic violence, which creates the conditions for the mentioned assessments to be more precise in terms of precision, ranking and risk classification, as well as the reduction of discretionary decision-making. This would create conditions for defming good practice in this area, which could be taken to the necessary extent in other countries.Pored nespornog kvaliteta Zakona o sprečavanju nasilja u porodici (Zakon), kojim je predviđena obaveza procenjivanja rizika u konkretnom (prijavljenom) slučaju nasilja u porodici u Republici Srbiji, njime nije predviđeno procenjivanje opšteg rizika od navedene vrste nasilja. Odsustvo Zakonom predviđene obaveznosti procene opšteg rizika od nasilja u porodici ima za posledicu podoptimalne uslove donošenja valjanijih odluka (time i planova) za suprotstavljanje navedenom bezbednosnom problemu. S tim u vezi, ovim radom se rešavanje ili ublažavanje problema odsustva procene opšteg rizika od nasilja u porodici razmatra analogijom te oblasti sa oblašću koja je po tom pitanju uređenija, kakvom se može smatrati bezbednost i otpornost društva - procena rizika, sadržana u istoimenom standardu (Standard). Polazeći od toga, radom su proverene mogućnosti i ograničenja procenjivanja (identifikovanjem, analiziranjem i vrednovanjem) opšteg rizika od nasilja u porodici primenom Standarda, radi njegovog tretiranja. Na osnovu realizovanog istraživanja zaključeno je da: 1) postoji potreba i mogućnost propisivanja obaveze procenjivanja opšteg rizika od nasilja u porodici; 2) ona treba da bude realizovana metodama polukvantitativne i kvantitativne analize, konkretno matrica verovatnoća i posledica (radi utvrđivanja prihvatljivosti ili neprihvatljivosti svih opštih rizika koji su u nadležnosti policije, među kojima i od nasilja u porodici), odnosno verovatnoće (radi utvrđivanja opšteg rizika od nasilja u porodici po pojedinim teritorijalnim organizacionim jedinicama policije, kako bi mogle međusobno da se porede); 3) postojeći Standard ne odgovara sasvim potrebama procene opšteg rizika od nasilja u porodici; 4) zbog čega postoji potreba za razvijanjem posebnog standarda za određivanje veličine opšteg rizika od porodičnog nasilja
Đurađ Stakić: Delotvorni programi tretmana za decu i adolescente sa problemima i poremećajima ponašanja, Centar za primenjenu psihologiju, Beograd, 2016
Get PDFIntegrate maintenance model based on control vibrations based of technical systems
No full textForming of integrated maintenance model of hydroelectric power plant components comprises most significant parameters of theoretical and experimental analyses. Forming of this model started with overall component failures and optimization parameters of hydroelectric power plant technical diagnostic procedures. Analyses of a model must show limits up to which analyzed compositions in exploitation process operate properly and safely. Model of optimization of technical diagnostics represents a specific approach to a problem of maintenance according to condition and is related to the concept of condition parameters control which represents basis for producing optimal solution of technical diagnostics procedures for hydroelectric power plant components
Pouzdanost merenja različitih kontraktilnih funkcija pregibača prstiju šake kod muškaraca različitog uzrasta
Get PDFThe aim of the research is to determine the reliability of testing various contractile functions of a male hand based on motoric and functional dominance and age. The examinee takes a seat with their arm extended or mildly flexed in a mildly abducted position. For the measuring purposes, dynamometric probe with isometric straining conditions fixed to a special construction was used. The 'Isometrics' (ver. 3.1.1) was used and frequency of data selection was realized on the level of 500 Hz. The sample includes 269 male examinees aged from 14.0 to 69.9. The results of descriptive statistics have shown that in relation to the tested sample for the non-dominant hand, values for maximum force (Fmax) range from 462.8 to 529.0 N, for explosive force (RFDmax) the range is from 1621.6 to 1972.8 N/s and for muscular force impulse (ImpF50%max) from 8203.9 to 15552.3 Ns, while Fmax values the dominant hand ranges from 478.1 to 566.2 N, for RFDmax it ranges from 1742.6 to 2119.0 N/s and for ImpF50%max 9516.7 to 16845.1 Ns. The results have shown that it is reliable to measure all three examined contractile hand characteristics where by ICC ranges from 0.938 to 0.977 for Fmax, from 0.903 to 0.971 for RFDmaxand from 0.747 to 0.943 for ImpF50%max. The second try as the better result should be considered the representational value for Fmaxand RFDmaxvariables, regardless of the hand dominance or age group. While for the variable ImpF50%max, in the age groups from 35.0 to 49.9 and from 50.0 to 69.9, the first tested try for both hands should be considered, in 14.0 to 19.9 years group the second try should be taken into consideration, and in 20.0 to 34.9 age range, the better result of the non-dominant hand is the first try, and of the dominant is the second try.Cilj istraživanja je da se utvrdi pouzdanost testiranja različitih kontraktilnih funkcija šake muškaraca, u zavisnosti od motoričko-funkcionalne dominantnosti i uzrasta. Ispitanik zauzima sedeći položaj sa opruženom ili blago fleksiranom rukom, postavljenom u blago abdukcioni položaj. Za potrebe merenja upotrebljena je dinamometrijska sonda, sa izometrijskim uslovima naprezanja, fiksirana za specijalnu konstrukciju. Korišćen je softver 'Isometrics' (ver. 3.1.1), a frekvencija odabira podataka realizovana je na nivou od 500 Hz. Uzorak je obuhvatio 269 ispitanika muškog pola, uzrasta od 14.0 do 69.9 godina. Rezultati deskriptivne statistike su pokazali da se u odnosu na testirani uzorak za nedominantnu ruku vrednosti ispoljene maksimalne jačine (Fmax) nalaze u rasponu od 462.8 do 529.0 N, za eksplozivnu jačinu (RFDmax) u rasponu od 1621.6 do 1972.8 N/s i za impuls mišićne jačine (ImpF50%max) od 8203.9 do 15552.3 Ns, dok su vrednosti Fmax za dominantnu ruku u rasponu od 478.1 do 566.2 N, za RFDmax u rasponu od 1742.6 do 2119.0 N/s i za ImpF50%max od 9516.7 do 16845.1 Ns. Utvrđeno je da se pouzdano mogu meriti sve tri ispitivane kontraktilne karakteristike šake, pri čemu se ICC nalazi u rasponu od 0.938 do 0.977 za Fmax, od 0.903 do 0.971 za RFDmax, i od 0.747 do 0.943 za ImpF50%max.Kao reprezentativnu vrednost za varijable Fmax i RFDmax, bez obzira na dominantnost ruke, ili uzrasnu grupu, treba uzimati drugi pokušaj kao bolji rezultat. Dok za varijablu ImpF50%max, u uzrasnim grupama od 35.0 do 49.9 i od 50.0 do 69.9 godina, uglavnom treba uzimati prvi testirani pokušaj za obe ruke, u grupi od 14.0 do 19.9 godina drugi testirani pokušaj, a u uzrastu od 20.0 do 34.9 godina bolji rezultat nedominantne ruke je prvi, a dominantne drugi pokušaj
Experimental research of the biodegradable universal tractor oil based on the vegetable oils
No full textVegetable oils are potential substitutes for petroleum-based oils. Not only they are environmentally
friendly, renewable and less toxic, but also they have excellent lubricating properties. Despite their safety,
vegetable oils suffer from several drawbacks, for instance in terms of thermal and oxidative stability. The
combination of additives in vegetable oils is the best option to overcome these problems. However, the additives
are often combination of many substances which may be toxic. This paper presents the features of the oils based
on rapeseed oil, sunflower, soya and mixture of rapes oil with mineral oil is, after corresponding testing, compared
with the features of the commercially available mineral oil based UTTO. According to the obtained results for
physico-chemical properties of various oil samples, it may be concluded that almost all the investigated properties
of biodegradable universal tractor oils, satisfy the John Deere and Massey Ferguson specifications, and some
characteristics are even better when compared to the properties of universal mineral based oil. The exceptions are
the oxidation stability and low temperature characteristics. The properties of vegetable oils were improved by the
corresponding additives, specially designed for these oils
Police Deprivation of Liberty in the Criminal Procedural Legislation of the Republic of Serbia and the Right to Liberty and Security of a Person
Get PDFThe reformed criminal procedural legislation of the RS successfully follows the modern
trends in the criminal procedural doctrine, especially in the area of application of the
measures of deprivation of liberty by the police and the limitation of the right to liberty
and security of a person. The new legal solutions in the RS (CPC/2011) are different both
in their conceptual definition, and by the entity that decides on the implementation of the
measures, which make the issue in question even more current, so the authors accordingly
paid special attention to the following issues: firstly, the police deprivation of liberty as an
international standard in the reformed criminal procedure legislation of the RS; Secondly,
court as a subject of decision on the legality of police deprivation of liberty in the RS;
Thirdly, empirical research into the implementation measures of police arrest in the RS and
suggestions of de lege ferenda
