bluuebunny/crossref_metadata_2025 huggingface dataset:
The Profitability of Legal Mergers in Times of Economic Crisis – A Polish Example
Authors: Janowicz Magdalena
Published: December 2023

Research background

Recent years have brought a serious economic crisis, first caused by the COVID-19 pandemic and later worsened by the Russian invasion of Ukraine. The global economy was greatly affected by these events, so it can be expected to see them affect the post-merger financial performance of companies.

Purpose

The aim of the paper is to examine if the pandemic and the Russian invasion of Ukraine had any effect on the financial performance of combined companies during these events in comparison to merged companies for which the 3-year post-merger period ended in 2019.

Research methodology

The research methods used involve a critical literature analysis and statistical tests. This study analyses the financial ratios of Polish public companies which participated in legal mergers which were finalised between 2016 and 2018. For each company necessary ROA ratios were calculated (pre-merger ROA ratio, ROA ratio for the 3rd year after the merger). The data was grouped according to the year of the merger and then compared to test the hypotheses.

Results

There was no statistically significant difference in the distribution of profitability ratios for the analysed companies before and during the crisis. However, there is evidence that there was a statistically significant increase in profitability ratios pre- and post-merger for legal mergers finalised in 2017.

Novelty

The paper provides an initial insight into how the latest economic crisis affected the financial performance of Polish public companies after a legal merger.
The Effects of Foreign Participation on Chinese Government Bond Yields
Authors: Liu Kerry
Published: December 2023

Research background

Since 2015, when China opened up its onshore bond markets more substantially, foreign investors have significantly increased their investments in Chinese local currency bonds.

Purpose

This study aims to examine the effects of foreign participation on Chinese government bond yields.

Research methodology

This study adopts a robust least squares model and a cointegration model.

Results

(Greater) foreign participation can significantly decrease 10-year Chinese government bond yields.

Novelty

There are almost no studies of the benefits and costs of foreign participation in Chinese bond markets. The conclusion drawn from this study is the first of its kind in the academic literature on the Chinese market, and contributes to knowledge about foreign participation in local currency bond markets.
Foreign Direct Investment, Gross Capital Formation, Foreign Remittances, and Economic Growth in Zimbabwe
Authors: Maune Alexander , Matanda Ephraim , Chitombo Ezekiel
Published: December 2023

Research background

Capital investment financing has been cited as a critical element in economic growth the world over although there is no consensus regarding the significance, direction, and magnitude of the relationship.

Purpose

The article investigated the relationship between foreign direct investment, gross capital formation, personal remittances, and gross domestic product in Zimbabwe from 1960–2020.

Research methodology

The random effects model was used to examine this relationship using data collected from the World Development Indicators database. The random effects model was selected after performing the Hausman test.

Results

All the regression coefficients of the country’s gross domestic product reveal a direct or positive relationship with the three independent variables. Furthermore, the study reveals that gross capital formation had the highest contribution to Zimbabwe’s gross domestic product compared to that of foreign direct investment and personal remittances for the period under study. The coefficients of determination of the independent variables were significant. In other words, foreign direct investment accounted for 57.24%, gross capital formation 68.47%, and personal remittances 48.76% to foreign direct investment for the same period.

Novelty

The article closed the gap in knowledge by drawing attention to the relationship between foreign direct investment, gross capital formation, personal remittances, and gross domestic product in Zimbabwe.
A Bibliometric Review of Green Finance: Current Status, Development and Future Directions
Authors: Saxena Ashish , Tiwari Sadhana , Bhardwaj Shashank , Srivastava Shweta , Kumar Nitendra
Published: December 2023

Research background

The worldwide fight against climate change and its impacts finds support in the realm of green financing. The realization of the United Nations’ sustainable objectives hinges upon it. Considering that green financing is hailed as the future of banking and investment, it demands a thorough comprehension.

Purpose

The purpose of this study is to delve into the cutting-edge trends within the domain of green financing research. Employing a mixed-methods approach involving bibliometric and qualitative analysis, this research aims to provide insights into this vital field.

Research methodology

Utilizing a mixed-methods approach, this study employs a bibliometric analysis, qualitative assessment, and content analysis to delve into the realm of green financing. Over a thousand interconnected papers are quantitatively analyzed, with validation from reputable sources such as Google Scholar, Web of Science, and ScienceDirect.

Results

The study’s findings reveal a clear trajectory. China leads in the implementation of green finance within business operations, with the USA following suit. These results underscore crucial applications of green financing within specific research domains.

Novelty

This study unveils significant applications of green financing across various research domains. Furthermore, it highlights methods to harness the potential benefits of green financing, thus promoting research and development advancements.
Empirical Assessment of How the Impact of Emotional Intelligence and Behavioural Biases Determine the Investment Decisions of Information Technology Professionals
Authors: Singh Sanjeet , Madaan Geetika , Singh Amrinder , Swapna H.R.
Published: December 2023

Research background

Emotional intelligence (EI) has been shown in earlier research to be crucial in determining how people proceed through life. Emotional intelligence (EI) is one of the most important determinants of how people relate to one another and feel.

Purpose

The study’s main aim is to comprehend in detail the assessment of Behavioural components and better understand the decision-making process of Information Technology Professionals, interrelationship and impact of emotional intelligence.

Research methodology

438 Information Technology Professionals provided the data for this study. The study conducted in a tri-city area in India consisting of Chandigarh, Mohali, and Panchkula. This investigation used the purposive testing technique and a conceptual framework developed to outline an empirical assessment of the impact of emotional intelligence on the behavioural biases of IT professionals.

Results

Individual investors’ investment selections connected to information technology professionals’ conduct predispositions and emotional intelligence insights. Information Technology Professionals take investing selections that have an impact of Emotional Intelligence.

Novelty

Knowledge of behavioural biases while making an investment choice will be useful for financial advisers, who can then advise investors on how to counteract such biases.
Numerical Insights Into Gas Mixing System Design for Energy Conversion Processes
Authors: Klevs M. , Zageris G. , Ziemelis A. A. , Dzelme V. , Geza V. , Jakovics A.
Published: December 2023

Uniform gas mixing is important in various scientific and engineering domains, particularly in a chemical reactor design employing pre-mixed gases for processes. Assessing the performance of different mixer designs through physical prototypes can be resource-intensive and time-consuming. Consequently, this study underscores the significance of numerical simulations to optimize gas mixing and distribution systems in energy conversion applications.

The research primarily focuses on varying the base mixer geometry by modifying the configuration of cross-flow inlets alongside the chambers. By employing numerical simulations, critical factors influencing mixing uniformity are identified, and innovative solutions are proposed to enhance system performance. Additionally, this work extends its application to improving the operational conditions of an industrial biomass gasifier, underlining the practicality of numerical modelling in addressing complex engineering challenges.
Building Ventilation Optimization Through Occupant-Centered Computer Vision Analysis
Authors: Telicko J. , Bolotin K.
Published: December 2023

Buildings consume about 40 % of all energy. Ventilation plays a significant role in both the energy consumption of buildings and the comfort of occupants. To achieve energy efficiency and comfort, smarter ventilation control algorithms can be employed, such as those with feedback based on CO2 levels. Furthermore, by knowing the current number of people in a space, ventilation can theoretically be adjusted to maintain a constant CO2 level without wasting energy when people are not present. An additional benefit of such control could arise due to occupants’ habits. For example, if a person senses elevated CO2 levels, even if the ventilation system has started operating more intense, they might choose to open a window, potentially compromising energy efficiency. Therefore, if the control algorithm were to maintain a constant CO2 level, occupants may be less likely to open windows.

In our work, we explore a model in combination with a custom monitoring system based on computer vision to implement such control. The monitoring system combines outside and inside CO2 sensors with precise people counting based on computer vision to provide data to the model. The model relies on the mass balance equation for CO2 and considers the historical data of the number of occupants and their activities to estimate the overall CO2 generation in indoor spaces. The results suggest that the model can effectively forecast CO2 dynamics with an absolute deviation of 40 ppm. However, it was observed that the analysis of the actual air exchange level could be compromised by several factors.
Analysis of the Heat Exchanger Energy Efficiency of Variable Cross Section with an Inhomogeneous Coolant
Authors: Sakipova S.E. , Nussupbekov B.R. , Ospanova D.A. , Shaimerdenova K.M. , Kutum B.B.
Published: December 2023

One of the main priorities in the modern thermal power engineering development is the problem of energy saving due to the economical use of fuel and energy reserves. Increasing energy consumption with a simultaneous increase in energy prices and widespread environmental degradation necessitates the development and implementation of energy efficient technologies to save fuel, materials and labour costs. The object of study is tubular heat exchangers of variable cross section, which are widely used in steam generators of nuclear power plants, gas turbines and transport plants. Scale deposit properties and the composition of the heat coolant were studied, and their influence on the energy efficiency of heat exchangers was analysed. To study the scale deposits and coolant influence on the energy efficiency of heat exchangers, their properties were examined using an atomic emission analysis with the help of a TESCAN electron microscope. The principles of implementing technologies aimed at intensifying heat transfer, reducing hydraulic and heat losses in heat exchangers were formulated.
Ectoparasitic aspects in Red-footed Falcon Falco vespertinus breeding colonies in the Po valley (Italy)
Authors: Cevenini Devon , Gustin Marco , Scaravelli Dino
Published: December 2023

Ectoparasite fauna of Falco vespertinus breeding colonies was investigated in a system of artificial nests in the Po valley (Parma province), Italy, during four subsequent breeding seasons (2019–2022). Conservation actions regarding Falco vespertinus led to a great increase in its presence in the area. This rise was believed to coincide with an increase in the prevalence of hematophagous ectoparasites breeding in the nests, with a potential negative impact on the attractiveness of the breeding site. Ectoparasites collected from the nestlings’ bodies almost entirely belonged to a single species, Diptera Carnus hemapterus, with a quite variable prevalence in different years. Maximum ectoparasite load was consistently linked to younger than two weeks old chicks. Carnus hemapterus may pose a threat to less resilient specimens of Falco vespertinus because it feeds on live tissues, increases metabolic expenditure, and can introduce blood parasites. Nonetheless, this species is part of the ecosystem shared with the falcon and might have a conservational value itself. We propose that higher occurrence of this ectoparasite might be linked to diet parameters, especially the availability of small mammals and the lingering of prey remnants in the nests, as well as to the age of the parasitized nestlings. These findings might have important implications for the conservation of this rare Falco species.
Records of avian deformities in Nepal
Authors: Pradhan Nikeet , Shrestha Mohan Bikram
Published: December 2023

Avian deformities have been recorded in a variety of bird species all over the world. However, they have not been studied in Nepal, although there are increasing sightings of these deformities. Injuries, genetic mutations, environmental factors, infections, radiation, and other factors can cause deformities. In our study, we collected data from numerous field trips, conversations with bird watchers and experts, and social media posts in Nepal. We reported 24 cases of avian deformities in 16 different bird species across 12 districts in Nepal, suggesting that certain abnormalities persist in a high proportion of previously unstudied birds. We discovered different types of color abnormalities (6 cases of leucism, 3 albinism, 4 partial leucism, 1 brown mutation, 1 melanism, and 3 unidentified color aberration), 5 cases of avian keratin disorder (AKD), and 1 case of both leucism and AKD. The majority of these cases affected corvids and other birds frequently living and nesting near human settlements, indicating that causative agents such as anthropogenic toxicants and environmental degradation could be important contributors. There is a scarcity of research on avian deformities and diseases in Nepal, thus more research on avian abnormalities, such as the pathophysiology of AKD and genetic studies, should be performed.
First record of brown plumage aberration in Indian Pied Starling (Gracupica contra) from India
Authors: Jangir Dipesh Kumar , Choudhary Rounak , Sharma Vivek , Dutta Subroto
Published: December 2023

Brown aberration in black plumage is defined by the progressive reduction of eumelanin in birds. The present report describes an observation of plumage with brown aberration in Indian Pied Starling (Gracupica contra) from the agricultural landscape of Shokliya village, Rajasthan, India. The observed individual exhibited browning in all the areas of the plumage that are normally black in this species, including the head, wing feathers, and tail feathers. However, feathers with no pigmentation remained white and unaffected. Genetic and dietary factors are thought to be major factors responsible for such aberrations in birds, but more research is needed to determine the exact reasons.
Breeding and conservation status of the Western Barn Owl (Tyto alba) in Zala County, Hungary. An overview of 39 years of data
Authors: Klein Ákos , Mátics Róbert , Schneider Zoltán
Published: December 2023

In this study, we analysed the occurrence, nesting, and ringing data spanning 39 years for the Western Barn Owl (Tyto alba) population in Zala County. Data on Barn Owl surveys originate from 166 out of the total of 258 settlements in the county. During the examined period, nesting was recorded in 74 settlements, while an additional 28 locations have confirmed Western Barn Owl presence (pellets, owl sightings). Furthermore, surveys were conducted at least once in an additional 64 locations without any sign of the species. Based on Barn Owl presence and nesting data, preferred locations for the species can be identified at the local and landscape level. Nesting may be occasional in some places, while a few traditional nesting sites, which show nearly continuous occupation over decades, can be considered stable. The results from Zala County are in line with other research, highlighting the continued importance of church buildings for the species’ nesting. Maintaining these buildings is essential for the conservation of a stable population. Given the decreasing number of accessible churches, there is a need for providing alternative nesting sites. In addition to building closures, the future doubling of the length of motorways in the county will pose another significant threat to the regional population.
Investigation of roadkilled Western Barn Owls (Tyto alba) in Csanádi-hát region (SE Hungary)
Authors: Csathó András István , Csathó András János , Bozó László
Published: December 2023

The Western Barn Owl (Tyto alba) is a common breeder in Hungary. It is a resident bird of open areas, staying near nesting sites in winter. Its population is strongly influenced by food availability, weather conditions and several anthropogenic activities. One of the most important factors of these in recent decades has been road mortality. In this work, we processed data of roadkilled individuals and field observation records in the Csanádihát region in south-eastern Hungary from the period 1995–2022. In Battonya, we have been recording roadkill individuals since 1995, while observations of Barn Owl individuals from Kevermes have been available since 2005. The species is a regular, but scarce breeder in the area, so both the number of roadkilled individuals and the number of field observations were relatively low. Nevertheless, we had the opportunity to examine how the number of individuals of the species that were killed in the traffic varied over time and within years. According to our data, more birds collided during the winter, and also between July and November. This can be explained mostly by the seasonal lack of food and the fledging time of inexperienced juveniles. The temporal distribution of field observations were different from the dynamics of the roadkills, as the species was mainly observed during the breeding season. The exact population size of the area can be difficultly estimated, as it breeds mainly in attics of stable, granary and church buildings. The breeding population of Kevermes was estimated at 3–4 pairs and did not change significantly in the studied period. Over the same 28-year period, using the same methods to the two other most common nesting owl species of the region, we found that the within-year roadkill dynamics of the Little Owl (Athene noctua) and the Northern Long-eared Owl (Asio otus) differed from that of the Western Barn Owls, which may be due to the different feeding habits of the species. We can conclude that the number of roadkilled birds was proportional to the local population of the species.
Diet of Pharaoh Eagle-Owl, Bubo ascalaphus, from Ara’r region, northern Saudi Arabia
Authors: Ghamdi Abdul Rahman Al , Alshammary Talal , Gethami Fahad Al , Boug Ahmad Al , Jbour Sharif Al , Abu Baker Mohammad A. , Amr Zuhair S.
Published: December 2023

The diet of the Pharaoh Eagle-Owl, Bubo ascalaphus, was investigated based on 338 pellets collected from caves and underground caves in Ara’r region, northern Saudi Arabia. Small mammals constituted the highest number of consumed prey (75.75%), followed by arthropods (20%), birds (2.9%) and reptiles (1.26%). The Libyan Jird, Meriones libycus, was the most consumed rodent (26.46%) followed by Sundevall’s Jird, Meriones crassus (20.47%), while the least were Cheesman Gerbil, Gerbillus cheesmani, and Wagner’s Gerbil, Gerbillus dasyurus. At least three species of scorpions, Androctonus crassicauda, Compsbuthus sp. and Scorpio sp., and two species of reptiles (Ptyodactylus hasselquistii and Trapellus agnetae) were recovered. Study of owl pellet contents proved to be a valuable tool to study species composition in unexplored regions. Also, our findings substantiate the fact that the Pharaoh Eagle-Owl is an opportunistic species that adapts to available preys in its habitat.
Food habits of Rufous-legged Owl in a protected area of south-central Chile affected by mixed wildfire
Authors: Zúñiga Alfredo H. , Rau Jaime R. , Sandoval Rodolfo , Fuenzalida Víctor
Published: December 2023

The diet of Rufous-legged Owl, Strix rufipes, a small raptor present in an Andean protected area, is described here. During the fall of 2017, 44 pellets were collected in the study area, being subsequently analyzed. The occurrence of small mammal prey items in pellets was compared with capture frequencies with live-trapping through Sherman traps. Regarding occurrence frequencies in the diet, arthropods were the most frequent (49.34%), followed by mammals (39.31%), birds (7.86%) and reptiles (3.37%). However, in terms of biomass, mammals had the highest biomass contribution. The observed frequency of consumed preys showed a random pattern, according to the captures of small mammals obtained with Sherman traps. The role of wildfire in the composition of prey in the observed trophic spectrum of these forest owls is also discussed.
Management of Municipal Housing Resources By Local Authorities in the Municipalities of Krakow (Poland) and Oradea (Romania) – A Comparative Study
Authors: Trembecka Anna , Droj Gabriela , Kwartnik-Pruc Anita
Published: December 2023

Changes in administrative structures in post-communist countries after the change of the political system resulted in the division of tasks performed by public administration. Local self-governments were established and the tasks of meeting the needs of local communities, including the housing needs, became their responsibility. The aim of this research paper is to examine whether these tasks are actually being implemented and to analyze the measures taken by municipalities in this respect. Real estate management was analyzed in terms of selling residential premises by way of tender and without a tender procedure, as well as purchasing residential premises for the implementation of the municipal tasks. The research was carried out on the example of the Municipality of Krakow in the years 2015-2022. The results of the analyses were compared with the results of the research carried out in the Municipality of Oradea in Romania. The data collected in these two municipalities in two different countries revealed completely different approaches of the local authorities to the analyzed issue. In Krakow, the local authorities have developed a long-term programme for managing the municipal housing resources, which is consistently being implemented. The local authorities in Oradea do not take any action to increase the number of available residential premises, or even to renovate them. Instead, they expect action to be taken by the National Housing Agency or private companies.
Predicting Housing Price Trends in Poland: Online Social Engagement - Google Trends
Authors: Bełej Mirosław
Published: December 2023

Various research methods can be used to collect housing market data and predict housing prices. The online search activity of Internet users is a novel and highly interesting measure of social behavior. In the present study, dwelling prices in Poland were analyzed based on aggregate data from seven Polish cities relative to the number of online searches for the keyword dwelling tracked by Google Trends, as well as several classical macroeconomic indicators. The analysis involved a vector autoregressive (VAR) model and the Granger causality test. The results of the study suggest that the volume of online searches returned by Google Trends is an effective predictor of housing price dynamics, and that unemployment and economic growth are important additional variables.
PREDLOG SISTEMA VEŠTAČKE INTELIGENCIJE ZA POMOĆ U MAMOGRAFSKOJ DIJAGNOSTICI
Authors: Jovišić Nikola
Published: December 2023

Mamografija kao dijagnostička metoda za otkrivanje maligniteta široko je u upotrebi i oslanja se na ekspertsko tumačenje radiologa. U ovom radu istražena je prilika da se takav sistem unapredi veštačkom inteligencijom koja bi predstavljala podršku u donošenju odluka u vezi sa tumačenjem mamografskih snimaka. Istražen je model U-net za segmentaciju tkiva, opisana njegova generalna arhitektura i arhitektura prilagođena za opisani problem, kao i njegova primena na nekim od otvorenih skupova podataka. Opisan je proces i opisani su parametri treniranja modela.. Izneseni su i diskutovani rezultati primenjenog modela i sve to sumirano u zaključnom poglavlju.
SAVREMENA RJEŠENJA SPOLJAŠNJEG OSVJETLJENJA PRIMJENOM LED-a
Authors: Popović Milan , Jerkan Dejan
Published: December 2023

U radu je obrađena upotreba LED spoljašnjeg osvjetljenja na primjeru projekta elektro­energetskih instalacija javnog osvjetljenja stambenog bloka 3, 4 i 5 na Jugovićevu u Novom Sadu. Cilj projekta je da se obezbjedi energetski efikasno osvjetljenje dovolj­nog kvaliteta i kvantiteta za bezbjednost i za povećanje vidljivosti i produktivnosti u prijatnom okruženju. Objaš­njeni su osnovni principi rada LED tehnologije i sistema spoljašnjeg osvjetljenja, kao i poređenje softvera za projektovanje osvjetljenja.
OPTIMIZACIJA NAPONA I SNAGA UNUTAR MIKROMREŽE
Authors: Košutić Ivana , Strezoski Luka
Published: December 2023

U radu su obrađene teorijske osnove o mikromrežama, DER-ovima, optimizaciji u elektroener­getskim sistemima, kao i matematički modeli vodova, transformatora i DER-ova koji će biti korišćeni dalje u analizi. U toku istraživanja, sprovedena je optimizacija sistema sa jasnim ciljem - minimizacijom gubitaka aktivne snage uz poštovanje naponskih ograničenja. Ovaj proces optimizacije nije usmjeren na globalno rješenje, već je pažljivo pristupljeno svakom resursu pojedinačno. Pronađeni su lokalni optimumi za svaki resurs, uzimajući u obzir njihove specifične karakteristike i ograničenja. Ova metoda pristupa omogućila je postizanje boljeg balansa između proizvodnje i potrošnje energije u mikromreži, čime se unapređuje efikasnost sistema i osigurava njegova stabilnost.
РАЗВОЈ СОФТВЕРА ЗА ОРГАНИЗАЦИЈУ РАСПОРЕДА ЧАСОВА У ВИСОКОШКОЛСКИМ УСТАНОВАМА
Authors: Ђукић Аница , Лубурић Никола
Published: December 2023

Овај рад описује развој софтвера за организацију распореда наставе у високошколским установама поштујући DDD приступ развоју софтвера. Описан је рад високошколске установе, представљени захтеви, анализирана слична решења и представљена слојевита архитектура по којој је развијена серверска страна развијеног система.
РАЗВОЈ АПЛИКАЦИЈЕ СТУДЕНТСКЕ СЛУЖБЕ ПРИМЕНОМ ДЕЦЕНТРАЛИЗОВАНИХ И ДИСТРИБУИРАНИХ ТЕХНОЛОГИЈА И ПРОТОКОЛА
Authors: Марковић Петар
Published: December 2023

У овом раду је имплементирана децентрализована апликација за рад са студентском службом. У оквиру овог рада је описана целокупна архитектура апликације коју чине паметни уговор постављен на Ethereum мрежи, сервер репрезентован као Express апликација и клијентска React апликација. Такође, објашњене су делатности свих горепоме­нутих компоненти и начин сарадње.
ПРЕДИКЦИЈА СРЧАНОГ УДАРА НА ОСНОВУ СТАЊА ПАЦИЈЕНТА ПРИМЕНОМ АЛГОРИТАМА МАШИНСКОГ УЧЕЊА
Authors: Јеремић Андријана , Сливка Јелена
Published: December 2023

Срчани удар или акутни инфаркт миокарда је изумирање дела срчаног мишића због наглог престанка циркулације кроз неку од артерија које исхрањују срце. Један је од најчешћих узрока смрти у развијеним земљама и земљама у развоју. Чешће погађа мушкарце него жене, а после уласка у климакс, ризик од настанка болести се изједначава. Присутнији је код људи старијих од 40 година. Фактори кардиоваскуларних ризика су различити и на неке од њих се може утицати, а на неке не. Предикција срчаног обољења код особе може бити врло непредвидива и дуготрајна, а често и неуспешна. Зато је данас све заступљенија употреба вештачке интелигенције за решавање овог проблема. У овом раду је предвиђано да ли ће се код пацијента јавити ово обољење на основу његовог здравственог стања. Обучени следећи модели: логистичка регресија, наивни Бајес, метод потпорних вектора, модел К најближих суседа, метод насумичне шуме, Light Gradient-Boosting Machine, eXtreme Gradient Boosting и Categorical Boosting (CatBoost). Последњи модел се испоставио као најбољи над коришћеним скупом података. Интерпретацијом овог модела дискутовани су фактори који највише утичу на предикцију појаве срчаног удара.
PROTOTIP APLIKACIJE ZA PRUŽANJE POSLOVNIH INFORMACIJA I ANALIZA MAKSIMALNE UPOTREBLJIVOSTI
Authors: Topolić Miloš
Published: December 2023

U ovom radu opisana je potreba za poslovnim informacijama i grupe korisnika koje imaju tu potrebu. Opisano je šta treba uzeti u obzir prilikom kreiranja aplikacije za pružanje poslovnih informacija i analiza. Razvijen je prototip aplikacije.
PREGLED I IMPLEMENTACIJA ODABRANIH RETROAKTIVNIH STRUKTURA PODATAKA
Authors: Kovačević Vera
Published: December 2023

Retroaktivne strukture podataka podržavaju modifikaciju niza operacija izvršenih nad datom strukturom. U ovom radu opisani su koncepti parcijalne i potpune retroaktivnosti, te je ilustrovana parcijalna retroaktivnost pomoću odabranih struktura: red, stek i red sa priotitetom. Glavni fokus rada jeste opis metoda implementacije odabranih struktura pomoću dvostruko povezane liste i strukture treap. Zaključeno je da se može postići vrijeme izvršavanja slično odgovarajućim standardnim strukturama.
POGON ZA VIZUELIZACIJU ANIMIRANIH 3D MODELA
Authors: Ivošević Jovan
Published: December 2023

Rad se bavi analizom i implementaci­jom problema vezanih za prikazivanje animiranih 3D modela. Predstavljena je struktura modela datoteke i način učitavanja i čuvanja podataka prilagođen za efikasnu upotrebu. Analizirani su metodi kompresije, animacije i prikazivanja takvih modela. Za dalji rad razmatrane su mogućnosti implementiranja podrške virtualne realnosti i potencijalni problemi koje takva implementacija donosi.
РАЗВОЈ РЕСПОНЗИВНЕ ВЕБ АПЛИКАЦИЈЕ ЗА ПОДРШКУ РАДУ НАЦИОНАЛНОГ САВЕЗА ЗА КОЊИЧКИ СПОРТ
Authors: Попарић Сара
Published: December 2023

Овај рад се бави развојем респонзивне веб апликације за подршку раду националног савеза за коњички спорт, односно апликације која је прилагодљива за коришћење са различитих уређаја. Анализом веб апликација националних и међународних савеза за коњички спорт примећено је да та решења нису погодна за коришћење са мобилних телефона, већ само са лаптоп и десктоп рачунара. Са друге стране, дипломски рад, који представља полазну основу за овај рад, имплементиран је само као мобилна апликација. Због тога, решење имплементирано у овом раду представља респонзивну веб апликацију која може да се користи независно од уређаја који корисник поседује, што је потврђено тестирањем апликације са различитих уређаја.
ПРИМЕНА МОДЕЛА ВРЕМЕНСКИХ СЕРИЈА ЗА ПРЕДИКЦИЈУ СРЕДЊЕГ ГЛОБАЛНОГ НИВОА МОРА
Authors: Арађанин Стефан , Сливка Јелена
Published: December 2023

Глобално загревање се односи на стално и дугорочно повећање просечне површинске температуре Земље. То је првенствено узроковано људским активностима као што су сагоревање фосилних горива, крчење шума и испуштање штетних гасова у атмосферу, попут угљен-диоксида и метана. Глобално загревање има дубоке ефекте на океане и мора широм света. Пораст нивоа мора резултира разним последицама на Земљи и захтева хитне мере за ублажавање. Овај рад истражује како различити фактори утичу на месечни пораст нивоа мора и његове временске флуктуације. Разматрани су фактори попут температуре, стопе топљења глечера, густине мора, салинитета и нивоа угљен-диоксида. Први део рада фокусира се на прикупљању, data wrangling-у и истраживачкој анализи података (енг. Explorative Data Analysis, EDA) којима је заједнички атрибут временска одредница. Други део рада фокусира се на примену модела временских серија (енг. Time Series)  коришћењем XGB Regressor-a, у циљу предвиђања тачне промене средњег глобалног нивоа мора. Користећи сређене и анализиране податке, модел може да укључи низ различитих фактора који утичу на ниво мора и да предвиди њихову промену на основу историјских образаца, са веома ниском стопом грешке.
ПЕРЗИСТЕНЦИЈА NEW WAVE АЛАТА ЗА УПРАВЉАЊЕ РАДНИМ ТОКОВИМА У РЕЛАЦИОНУ БАЗУ ПОДАТАКА
Authors: Мијалковић Матија
Published: December 2023

Тема овог рада је перзистенција NewWave алата за управљање пословним процесима у релациону базу података. С обзиром да је у израдиNewWave система коришћен Pharo програмски језик, перзистенција се имплементира уз помоћ Pharo објектно-релационог мапера под називом GLORP (Generic Lightweight Object Relational Persistence), у комбинацији са PostgreSQL базом података. Имплементација самог решења може се поделити на две целине. Прва се односи на перзистенцију модела пословних процеса, док се друга фокусира на перзистенцију појединачних инстанци извршавања пословних процеса.
ПРЕДИКЦИЈА ПОРАСТА НИВОА МОРА КОРИШЋЕЊЕМ АЛГОРИТАМА МАШИНСКОГ УЧЕЊА
Authors: Савић Стефан , Сливка Јелена
Published: December 2023

Због утицаја које има на планету и на људске животе, глобално загревање је тема која је постала веома значајна у последњих неколико деценија. Пораст нивоа мора представља једну од најозбиљнијих последица глобалног загревања. Главни циљ овог рада је његова предикција. Најпре је вршено прикупљање релевантних података из различитих извора. Након тога, вршено је претпроцесирање и формирање коначног скупа података који представља улаз у систем. Над претпроцесираним подацима тренинг скупа извршено је обучавање више модела међу које спада метод потпорних вектора, Наивни Бајесов модел, метод случајне шуме, Bagging и XGBoost, као и модели временских серија. Сваки од модела је за излаз имао вероватноћу да ли се десио пораст нивоа мора у односу на претходни месец, док су временске серије предвиђале тачне вредности средњег глобалног нивоа мора. Изведен је закључак да главни утицај на пораст нивоа мора представља емисија штетних гасова тј. угљен-диоксида и температуре, како на површини воде, тако и на копну.
Prevalence of hemorrhoids and associated risk factors among adult patients: a cross-sectional study in Saudi Arabia
Authors: Alsawat Abullah , Alosaimi Fahad , Altowairqi Abdulmajeed , Alghamdi Ibrahim , Alzahrani Abdulrahman , Alotaibi Rakan
Published: December 2023

Objective:
This study aimed to determine the prevalence of hemorrhoidal illness in a representative sample of the general population from various regions of Saudi Arabia and analyze the features of patients with hemorrhoidal disease and how they were treated.
Methods:
A cross-sectional study was conducted among the adult population in the western region of Saudi Arabia that included all adult men and women who agreed to participate. A pretested questionnaire was used to collect data.
Result:
The study enrolled 380 participants, most of whom were females (61.6%), whereas males counted for 38.4%. Most common type was external hemorrhoids (59.8%). Sedentary lifestyle was the leading risk factor (19.14%), followed by dehydration (14.49%).
Conclusion:
The prevalence of hemorrhoids was approximately 40% among participants, more commonly affecting women (more than 50%), with sedentary life as the most common risk factor and anal pain at the top of the associated symptoms list. It was suggested to run campaigns to educate people that it is a common disease and explain the different types and risk factors associated with hemorrhoids.
STUDENT'S ABILITY IN USING LEXICAL COLLOCATIONS IN DESCRIPTIVE WRITING AT THE ENGLISH DEPARTMENT OF PADANG STATE POLYTECHNIC
Authors: Yalmiadi Yalmiadi
Published: December 2023

Penelitian ini bertujuan untuk menemukan jenis kolokasi leksikal yang digunakan oleh mahasiswa dalam tulisan deskriptif, dan yang banyak salah dalam penggunaannya serta menjelaskan penyebab kesalahan tersebut. Jenis penelitian ini adalah deskriptif kualitatif. Subjek penelitian adalah mahasiswa semester genap tahun akademik 2011/2012 sebanyak 22 mahasiswa yang dipilih menggunakan random sampling technic. Data diperoleh dari tulisan deskriptif mahasiswa. Hasil penelitian menunjukkan bahwa ketujuh jenis kolokasi leksikal yang ada seperti; Verb [creation and or activation] + Noun (L1), Verb [eradictionand or nullification] + Noun (L2), Adjective + Noun (L3), Noun + Verb (L4), N1 + of + N2 (L5), Adverb + Adjective (L6), and Verb + Adverb (L7) dapat ditemukan dalam tulisan mahasiswa tersebut. Jenis kolokasi yang banyak salah adalah (L3), (L1), dan (L4), sedangkan (L5), (L7), dan (L2) lebih sedikit, selanjutnya (L6) paling sedikit ditemukan. Penyebab terjadinya kesalahan tersebut adalah: intervensi bahasa kedua, perbendaharaan kata, terjemahan per kata, terjemahan langsung, tidak memperhatikan aturan, serta kurangnya pengetahuan siswa tentang kolokasi itu sendiri.
THE EFFECT OF READ-IMAGINE-DESCRIBE-EVALUATE-REPEAT (RIDER) STRATEGY AND READING MOTIVATION TOWARD STUDENTS' READING COMPREHENSION AT GRADE VIII OF SMP PERTIWI 2 PADANG
Authors: Putri Dwi Anggreini Waskito
Published: December 2023

Penelitian ini bertujuan untuk melihat pengaruh penggunaan RIDER strategi dan motivasi membaca guna memotivasi siswa dan meningkatkan kemampuan membaca siswa dalam memahami teks deskriptif pada satuan pendidikan Sekolah Menengah Pertama (SMP) di SMP PERTIWI 2 Padang. RIDER strategi diharapkan dapat memberikan kontribusi yang lebih baik dalam pengajaran membaca teks deskriptif bagi siswa di SMP. Jenis penelitian ini adalah penelitian eksperimen dengan populasinya yaitu kelas VIII SMP PERTIWI 2 Padang tahun pelajaran 2014-2015. Sampel penelitiannya yaitu kelas VIII-2 sebagai kelas kontrol dan kelas VIII-3 sebagai kelas eksperimen. Instrumen yang digunakan adalah test membaca dan kuesioner. Hasil dari penelitian ini menunjukkan tidak adanya efek yang signifikan pada siswa yang memiliki motivasi tinggi.
KOMPETENSI MAKROSTRUKTUR MAHASISWA UNIDHA DILIHAT DARI FUNGSI HEMISFER KANAN
Authors: Handoko Handoko , Yanti Rahma Yanti , Antaridha Rabbi
Published: December 2023

Research on language competence of university students is critical since many people consider them have problem in well manner, especially in communication. Communication is not only passing information from speaker to hearer through language but also involve critical thinking and cognitive aspect of language. Macrostructure is competence which reflects speakers ability in using cognitive aspect to processing language. While microstructure is processed in left hemispher, macrostructure depends on process in right hemisphere. It is because macrostructure need holistic processing which connect partial informations and figure out the relation between the informations. Research toward students of Universitas Dharma Andalas shows that many students have problem in processing macrostructure aspect of language. About 81% participants have problem in summarizing, 75% participants have problem in memorizing adjective, 70% participants have problem in immidiate memory processing, 75% particiants have difficulty in figuring implicit relation, and 70% participants have difficult in using cohesion.
ANALISIS ABSOLUTE DAN OBLIQUE DALAM BAHASA KERINCI ISOLEK PULAU TENGAH
Authors: Rina Nova , Rahman Fadlul
Published: December 2023

This research study in phonological field, aims of this research to discribe rhyme alternation on form of absolute and oblique in Kerinci language isolect pulau tengah. The purpose of this research are 1) to documenting Kerinci language isolect Pulau Tengah that threatened by Indonesian standart, Jakarta Indonesia, Minangkabau language, and most seriously threathened by Kerinci koine 2) the result of this research about description of Kerinci language isolect Pulau Tengah will be useful for other Malayic language researcher especially in remote areas of Sumatera and 3) give langauge contribution significantly for Kerinci society especially for Pulau Tengah society. This research found 19 rhyme alternation in G-words, 20 rhyme alternation in K-words, 16 vocal sequences, 28 consonant clusters, 12 consonant sequences, and base on silable phonotactic rules in Kerinci language isolect Pulau Tengah, it found six rules; V, VC, CV, CVC, CCV, and CCVC.
MODEL TERAPI PERILAKU PENDERITA MALOKLUSI BIBIR SUMBING
Authors: Putri Yessy Prima
Published: December 2023

Seorang manusia yang normal fungsi otak dan alat bicaranya, relatif dapat berbahasa dengan baik. Namun, mereka yang memiliki kelainan fungsi otak dan alat bicaranya, sering mempunyai kesulitan dalam berbahasa. Dengan kata lain, kemampuan berbahasanya mengalami gangguan. Gangguan berbicara dapat disebabkan oleh karena terjadinya kerusakan pada alat-alat artikulasi, juga karena terjadinya kerusakan pada otak. Maloklusi adalah suatu kelainan susunan gigi geligi atas dan bawah yang berhubungan dengan bentuk rongga mulut serta fungsinya. Maloklusi yang parah dapat mempengaruhi semua aspek fungsi mulut antara lain pengunyahan, penelanan, dan bicara. Maloklusi juga terjadi pada penderita bibir sumbing yaitu suatu kelainan bawaan yang terdapat pada bibir dan langit-langit yang mengakibatkan komplikasi gangguan berbicara. Penelitian ini bertujuan untuk mengetahui kesilapan fonologis penderita maloklusi bibir sumbing dan penerapan model terapi perilaku pada penderita maloklusi bibir sumbing.
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Penelitian ini adalah penelitian diskriptif yang analisisnya secara kualitatif dan kuantitatif. Pengumpulan data dalam penelitian ini menggunakan metode cakap, simak, dan padan, sedangkan teknik yang digunakan dalam pengumpulan data adalah teknik pancing, cakap semuka, rekam, dan catat. Data yang digunakan berupa daftar kata, cerita bergambar, dan membaca teks untuk penerapan model terapi perilaku terhadap penderita.
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Dari penelitian ini, ditemukan beberapa kesilapan fonologis pada penderita maloklusi bibir sumbing, yaitu verba penggantian bunyi [t], [k], [b], [p], [c], [m], [z], [s], [j], [d], [g], [f], [r], [É], [x], verba penghilangan bunyi [k], [t], [g], [p], verba penambahan bunyi [É] yang hanya terjadi pada subjek 1 pada setiap suku kata, dan verba ketidakteraturan juga hanya terjadi pada subjek 1. Model terapi perilaku yang telah dilakukan pada subjek 3, dalam waktu 5 minggu, dapat merubah kesilapan bunyi [c] yang awalnya diucapkan dengan bunyi [É].
Chronic Pain and Subjective Health in a Sample of Indonesian Adults: A Moderation of Gender
Authors:   Nusa Cendana University, Indonesia, Weraman Pius , Susanto Nugroho ,   Padang State University, Indonesia, Wahyuni Luh Tu Selpi ,   Triatma Mulya University, Indonesia, Pranata Doni ,   Tanjungpura University, Indonesia, Saddhono Kundharu ,   Sebelas Maret University, Indonesia, Dewi Komang Ayu Krisna ,   Triatma Mulya University, Indonesia, Kurniawati Kadek Lina ,   Triatma Mulya University, Indonesia, Hita I Putu Agus Dharma ,   Triatma Mulya University, Indonesia, Lestari Nyoman Ayu Putri ,   Triatma Mulya University, Indonesia, Nizeyumukiza Emmanuel ,   Université des Grands Lacs, Burundi
Published: December 2023

Chronic pain is an essential burden for public health. Yet, evidence of its association with subjective perceptions of health in the community and gender differences is still lacking in Indonesia. This study examined how chronic pain relates to subjective health in the community and gender differences in this relationship using an Indonesian nationwide community survey. A total of 3,255 adults were involved in the study, with the mean age of the participants being 41.6 years (SD = 13.4), with 57% identifying as female. The results revealed that chronic pain was an essential predictor of subjective health. Those who had chronic pain reported poor subjective health compared to their counterparts, regardless of their gender, education level, marital status, smoking status, unemployment status, religiosity, and extroversion personality trait. In addition, the findings showed that the negative association between chronic pain and subjective health was stronger in women than in men. This study stipulates that targeting pain in the general population and managing and treating pain might lead to improvement in public health. In addition, efforts to reduce chronic pain and to increase subjective health in the general population should be gender mindful.
Low-Thrust Transfer Orbit Optimization Using Sequential Convex Programming and Adaptive Mesh Refinement
Authors: Zhao Jisong , Li Jia , Li Shuang
Published: December 2023

In this paper, a mesh-adaptive Hermite–Simpson sequential convex programming (SCP) method is proposed for solving low-thrust orbit transfer problems efficiently and accurately. First, we develop a Hermite–Simpson convex programming method that utilizes quadratic polynomial control interpolation to improve discretization accuracy. Then, a mesh-adaptive Hermite–Simpson SCP method is proposed by incorporating an improved adaptive mesh refinement method into the Hermite–Simpson SCP method for solving optimal control accurately and efficiently. The proposed method is applied to two-dimensional time-optimal and three-dimensional fuel-optimal low-thrust orbit transfer problems to show its features, and its performance is compared against several existing methods. Numerical simulations show that the proposed method achieves more accurate solutions while being computationally more efficient compared to the trapezoidal SCP method. In comparison to the GPOPS-II software, the proposed method produces solutions of comparable accuracy but is more computationally efficient.
Aerostructural Optimization and Comparative Study of Twin-Fuselage and Strut-Braced-Wing Aircraft Configurations
Authors: Ma Yiyuan , Abouhamzeh Morteza , Elham Ali
Published: December 2023

The ultrahigh-aspect-ratio wing (UHARW) concept is a promising configuration to achieve future sustainable aviation goals. Twin-fuselage (TF) and strut-braced-wing (SBW) configurations are characterized by smaller structural bending moments and shear forces in the wing and are promising concepts for realizing UHARW designs. This paper addresses the aerostructural optimization problem of TF and SBW configurations with UHARW by using a coupled adjoint aerostructural optimization tool, which is composed of a geometrically nonlinear structural solver and a quasi-three-dimensional natural laminar flow (NLF) aerodynamic solver. The optimization results show significant improvements in fuel efficiency and performance for the TF and SBW aircraft, with fuel mass reductions of 13 and 10%, respectively, compared to the corresponding baseline aircraft designed in the conceptual design phase. In comparison to the original reference aircraft A320neo, the optimized TF and SBW have 48 and 31% lower fuel weights, respectively. The NLF range of both upper and lower wing surfaces is expanded during optimization. The optimized SBW configuration has a wing aspect ratio of 26.01, while the optimized TF has a wing aspect ratio of 20.74, indicating that the SBW concept is more conducive to realizing UHARW design compared with the TF configuration studied in this work. The optimized TF aircraft has a lighter fuel weight and gross weight compared to the optimized SBW aircraft, which is because the TF aircraft has a lighter operational empty weight, including a lighter fuselage structural weight, landing gear weight, etc., whereas the top-level aircraft requirements are the same for both aircraft, including range, payload, and cruise Mach.