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Analysis of the Benefits of Unmanned Aerial Vehicles for the Air Traffic Management System
No full textBespilotne letjelice donose višestruke koristi različitim korisnicima, što je i razlog njihove
sve veće prisutnosti i prihvaćenosti u različitim poslovnim sektorima. Primjerice, pregled
literature u području istraživanja ukazuje na to da je tematika integracije bespilotnih letjelica u
kontrolirani zračni prostorom podjednako relevantna sa znanstvenog i stručnog, odnosno s
istraživačko-razvojnog, regulatornog i aplikativnog aspekta. Međutim, predmetno istraživanje
radi odmak od postojeće literature tako da rad sadržajno definira i opisuje koristi integracije i
primjene bespilotnih letjelica u odnosu na druge korisnike zračnog prostora, usluge u zračnoj
plovidbi i općenito sustav upravljanja zračnim prometom. Na tragu navedenog, rad prikazuje
ishode analize koristi bespilotnih letjelica za sustav upravljanja zračnim prometom,
artikuliranih kroz četiri ključna područja performansi sustava - kapacitet, sigurnost, troškovna
učinkovitost i okoliš. Na taj način istraživanje proširuje postojeću literaturu i pridonosi daljnjem
istraživanju i razvoju u području istraživanja.Unmanned Aerial Vehicles (UAVs) bring multiple benefits to various users, which is why
they are increasingly present and accepted across different business sectors. For instance, a
review of the literature in the field of research indicates that the topic of integrating UAVs into
controlled airspace is equally relevant from a scientific and professional standpoint, as well as
from a research-developmental, regulatory, and applicative perspective. However, this study
departs from the existing literature by defining and describing the benefits of UAV integration
and application in relation to other Airspace Users (AUs), Air Navigation Services (ANS), and
the overall Air Traffic Management (ATM) system. In line with this, the study presents the
outcomes of an analysis of the benefits of UAVs for the ATM system, articulated through four
Key Performance Areas (KPA) of system - capacity, safety, cost-efficiency, and environment.
In this way, the research expands the existing literature and contributes to further Research and
Development (R&D) in the field of study
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Konstrukcija dvonožnog hodajućeg robota pokretanog umjetnim pneumatskim mišićima
Get PDFTema rada je izrada autonomnog dvonožnog humanoidnog mobilnog robota pokretanog umjetnim pneumatskim mišićima. Dvonožni hod je jedan on težih dinamičkih problema u robotici. Postizanje stabilnosti takvih sustava zahtijeva dobro osmišljenu konstrukciju i adekvatan upravljački algoritam. Autonomnost pneumatskog sustava zahtijeva kompresor i spremnik stlačenog zraka kako bi se mogao sam napajati zrakom.
Rad se ponajprije bavi izradom konstrukcije hodajućeg dvonožnog robota. Na konstrukciju su montirani svi dijelovi potrebni za hod humanoidnog robota. Predložena je nadogradnju sustava s ciljem postizanja autonomnog hoda.
Opisani su stupnjevi slobode gibanja robota zajedno s njihovim ograničenjima. Također je objašnjen rad energetskog i upravljačkog sustava. Humanoidni robot konstruiran je u CAD alatu i prikazana je željena simulacija hoda
Analysis of the Benefits of Unmanned Aerial Vehicles for the Air Traffic Management System
No full textBespilotne letjelice donose višestruke koristi različitim korisnicima, što je i razlog njihove
sve veće prisutnosti i prihvaćenosti u različitim poslovnim sektorima. Primjerice, pregled
literature u području istraživanja ukazuje na to da je tematika integracije bespilotnih letjelica u
kontrolirani zračni prostorom podjednako relevantna sa znanstvenog i stručnog, odnosno s
istraživačko-razvojnog, regulatornog i aplikativnog aspekta. Međutim, predmetno istraživanje
radi odmak od postojeće literature tako da rad sadržajno definira i opisuje koristi integracije i
primjene bespilotnih letjelica u odnosu na druge korisnike zračnog prostora, usluge u zračnoj
plovidbi i općenito sustav upravljanja zračnim prometom. Na tragu navedenog, rad prikazuje
ishode analize koristi bespilotnih letjelica za sustav upravljanja zračnim prometom,
artikuliranih kroz četiri ključna područja performansi sustava - kapacitet, sigurnost, troškovna
učinkovitost i okoliš. Na taj način istraživanje proširuje postojeću literaturu i pridonosi daljnjem
istraživanju i razvoju u području istraživanja.Unmanned Aerial Vehicles (UAVs) bring multiple benefits to various users, which is why
they are increasingly present and accepted across different business sectors. For instance, a
review of the literature in the field of research indicates that the topic of integrating UAVs into
controlled airspace is equally relevant from a scientific and professional standpoint, as well as
from a research-developmental, regulatory, and applicative perspective. However, this study
departs from the existing literature by defining and describing the benefits of UAV integration
and application in relation to other Airspace Users (AUs), Air Navigation Services (ANS), and
the overall Air Traffic Management (ATM) system. In line with this, the study presents the
outcomes of an analysis of the benefits of UAVs for the ATM system, articulated through four
Key Performance Areas (KPA) of system - capacity, safety, cost-efficiency, and environment.
In this way, the research expands the existing literature and contributes to further Research and
Development (R&D) in the field of study
Analysis of the Benefits of Unmanned Aerial Vehicles for the Air Traffic Management System
No full textBespilotne letjelice donose višestruke koristi različitim korisnicima, što je i razlog njihove
sve veće prisutnosti i prihvaćenosti u različitim poslovnim sektorima. Primjerice, pregled
literature u području istraživanja ukazuje na to da je tematika integracije bespilotnih letjelica u
kontrolirani zračni prostorom podjednako relevantna sa znanstvenog i stručnog, odnosno s
istraživačko-razvojnog, regulatornog i aplikativnog aspekta. Međutim, predmetno istraživanje
radi odmak od postojeće literature tako da rad sadržajno definira i opisuje koristi integracije i
primjene bespilotnih letjelica u odnosu na druge korisnike zračnog prostora, usluge u zračnoj
plovidbi i općenito sustav upravljanja zračnim prometom. Na tragu navedenog, rad prikazuje
ishode analize koristi bespilotnih letjelica za sustav upravljanja zračnim prometom,
artikuliranih kroz četiri ključna područja performansi sustava - kapacitet, sigurnost, troškovna
učinkovitost i okoliš. Na taj način istraživanje proširuje postojeću literaturu i pridonosi daljnjem
istraživanju i razvoju u području istraživanja.Unmanned Aerial Vehicles (UAVs) bring multiple benefits to various users, which is why
they are increasingly present and accepted across different business sectors. For instance, a
review of the literature in the field of research indicates that the topic of integrating UAVs into
controlled airspace is equally relevant from a scientific and professional standpoint, as well as
from a research-developmental, regulatory, and applicative perspective. However, this study
departs from the existing literature by defining and describing the benefits of UAV integration
and application in relation to other Airspace Users (AUs), Air Navigation Services (ANS), and
the overall Air Traffic Management (ATM) system. In line with this, the study presents the
outcomes of an analysis of the benefits of UAVs for the ATM system, articulated through four
Key Performance Areas (KPA) of system - capacity, safety, cost-efficiency, and environment.
In this way, the research expands the existing literature and contributes to further Research and
Development (R&D) in the field of study
Speech emotion recognition based on acoustic features using a neural network methodology
No full textGovor je primarni način komuniciranja između ljudi, a izražene emocije igraju veliku ulogu u razumijevanju konteksta poruke prenesene govorom. Kako se razvija komunikacija između ljudi i računala potrebno je omogućiti računalima prepoznavanje ljudskih emocija. U ovome radu izrađen je softver koji na temelju umjetnih neuronskih mreža iz govora prepoznaje izražene emocije. Umjetne neuronske mreže obrađuju akustičke značajke iz govora kako bi prepoznale emocije. Izrađena su dva različita modela umjetnih neuronskih mreža, te su oba modela trenirana na dostupnim bazama podataka. Dva izrađena modela su eksperimentalno evaluirana na ljudskim subjektima.Speech is the primary means of communication between people, and expressed emotions play an important role in understanding the context of the message sent through it. As the communication between humans and computers develops it is necessary to enable machines to recognize human emotions. In this paper, a software has been developed which is based on artificial neural networks to recognize expressed emotions from speech. Artificial neural networks process acoustic features of speech to recognize emotions. Two different models of artificial neural networks have been developed, and both models have been trained on available databases. The two developed models were experimentally evaluated by human subjects
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Characteristics of Aircraft Spproaching and Landing Systems
Get PDFPrilaz i slijetanje predstavljaju završnu fazu leta. Sustav ILS predstavlja standardni sustav pomoću kojeg pilot dobiva informacije o prilaznoj putanji na uzletno-sletnu stazu. Zbog svojih nedostataka u radu je prikazan sustav MLS koji zbog boljih karakteristika predstavlja moguću alternativu. Sustav VOR neophodno je navigacijsko pomagalo za odvijanje komercijalnog zračnog prometa jer pozicije takvih postaja određuju koridore u kojima se odvija ukupan zračni promet. DME koristi se za mjerenje udaljenosti zrakoplova od stanice na zemlji na principu radara. Pojašnjenjem rada i funkcija sustava za navigaciju i slijetanje provedena je usporedba performansi, te mogućnost daljnjeg napretka.Approach and landing represent the final flight phase. The ILS system represents a standard system by which the pilot receives information about the access road to runway. Due to its disadvatages, the MLS system is presented, which, due to its better characteristics, represents a possible alternative. The VOR system is a necessary navigational aid for commercial air traffic, since the positions of such stations determine the corridors in which the total air traffic takes place. DME is used to measure the distance of a plane from a station on Earth to the radar principle. Explanation of the operation and functions of the navigation and landing systems performed a comparison of performance and the possibility of further progress
Design of a two-legged walking robot driven by pneumatic artificial muscles
Get PDFTema rada je izrada autonomnog dvonožnog humanoidnog mobilnog robota pokretanog umjetnim pneumatskim mišićima. Dvonožni hod je jedan on težih dinamičkih problema u robotici. Postizanje stabilnosti takvih sustava zahtijeva dobro osmišljenu konstrukciju i adekvatan upravljački algoritam. Autonomnost pneumatskog sustava zahtijeva kompresor i spremnik stlačenog zraka kako bi se mogao sam napajati zrakom.
Rad se ponajprije bavi izradom konstrukcije hodajućeg dvonožnog robota. Na konstrukciju su montirani svi dijelovi potrebni za hod humanoidnog robota. Predložena je nadogradnju sustava s ciljem postizanja autonomnog hoda.
Opisani su stupnjevi slobode gibanja robota zajedno s njihovim ograničenjima. Također je objašnjen rad energetskog i upravljačkog sustava. Humanoidni robot konstruiran je u CAD alatu i prikazana je željena simulacija hoda.This work deals with manufacturing of autonomous bipedal humanoid mobile robot actuated by artificial pneumatic muscles. Bipedal walk is one of the most complex dynamic processes in robotics. Achieving stability of such systems requires a well designed mechanical structure and adequate control algorithm. Autonomy of pneumatic system requires a compressor and a tank for compressed air so that it could be supplied with compressed air.
This work primarily focuses on the construction of mechanical structure of bipedal walking robot. All parts needed for the bipedal walk of the humanoid robot are mounted on the mechanical structure. Upgrades to the system are suggested with the goal of achieving bipedal autonomous walk.
Degrees of freedom and their limitations are described. The operating mode of power and control systems are also explained. The humanoid robot is constructed in CAD program and the simulation of the bipedal walk is shown
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