978 research outputs found
Factors affecting trust and communication in global virtual teams
No full textAuthor Georgios GousiasMasterarbeit Universität Linz 2022Arbeit auf den öffentlichen PCs in den Bibliotheken der JKU+Medizin abrufba
Factors affecting trust and communication in global virtual teams
No full textAuthor Georgios GousiasMasterarbeit Universität Linz 2022Arbeit auf den öffentlichen PCs in den Bibliotheken der JKU+Medizin abrufba
Forex News Annotated Dataset for Sentiment Analysis
No full textThis dataset contains news headlines relevant to key forex pairs: AUDUSD, EURCHF, EURUSD, GBPUSD, and USDJPY. The data was extracted from reputable platforms Forex Live and FXstreet over a period of 86 days, from January to May 2023. The dataset comprises 2,291 unique news headlines. Each headline includes an associated forex pair, timestamp, source, author, URL, and the corresponding article text. Data was collected using web scraping techniques executed via a custom service on a virtual machine. This service periodically retrieves the latest news for a specified forex pair (ticker) from each platform, parsing all available information. The collected data is then processed to extract details such as the article's timestamp, author, and URL. The URL is further used to retrieve the full text of each article. This data acquisition process repeats approximately every 15 minutes.
To ensure the reliability of the dataset, we manually annotated each headline for sentiment. Instead of solely focusing on the textual content, we ascertained sentiment based on the potential short-term impact of the headline on its corresponding forex pair. This method recognizes the currency market's acute sensitivity to economic news, which significantly influences many trading strategies. As such, this dataset could serve as an invaluable resource for fine-tuning sentiment analysis models in the financial realm.
We used three categories for annotation: 'positive', 'negative', and 'neutral', which correspond to bullish, bearish, and hold sentiments, respectively, for the forex pair linked to each headline. The following Table provides examples of annotated headlines along with brief explanations of the assigned sentiment.
Examples of Annotated Headlines
Forex Pair
Headline
Sentiment
Explanation
GBPUSD
Diminishing bets for a move to 12400
Neutral
Lack of strong sentiment in either direction
GBPUSD
No reasons to dislike Cable in the very near term as long as the Dollar momentum remains soft
Positive
Positive sentiment towards GBPUSD (Cable) in the near term
GBPUSD
When are the UK jobs and how could they affect GBPUSD
Neutral
Poses a question and does not express a clear sentiment
JPYUSD
Appropriate to continue monetary easing to achieve 2% inflation target with wage growth
Positive
Monetary easing from Bank of Japan (BoJ) could lead to a weaker JPY in the short term due to increased money supply
USDJPY
Dollar rebounds despite US data. Yen gains amid lower yields
Neutral
Since both the USD and JPY are gaining, the effects on the USDJPY forex pair might offset each other
USDJPY
USDJPY to reach 124 by Q4 as the likelihood of a BoJ policy shift should accelerate Yen gains
Negative
USDJPY is expected to reach a lower value, with the USD losing value against the JPY
AUDUSD
RBA Governor Lowe’s Testimony High inflation is damaging and corrosive
Positive
Reserve Bank of Australia (RBA) expresses concerns about inflation. Typically, central banks combat high inflation with higher interest rates, which could strengthen AUD.
Moreover, the dataset includes two columns with the predicted sentiment class and score as predicted by the FinBERT model. Specifically, the FinBERT model outputs a set of probabilities for each sentiment class (positive, negative, and neutral), representing the model's confidence in associating the input headline with each sentiment category. These probabilities are used to determine the predicted class and a sentiment score for each headline. The sentiment score is computed by subtracting the negative class probability from the positive one.If you use this in your research, please cite the following research article:
Fatouros, G., Soldatos, J., Kouroumali, K., Makridis, G., & Kyriazis, D. (2023). Transforming Sentiment Analysis in the Financial Domain with ChatGPT. arXiv preprint arXiv:2308.07935.
@article{fatouros2023transforming,
title={Transforming Sentiment Analysis in the Financial Domain with ChatGPT},
author={Fatouros, Georgios and Soldatos, John and Kouroumali, Kalliopi and Makridis, Georgios and Kyriazis, Dimosthenis},
journal={arXiv preprint arXiv:2308.07935},
year={2023}
Der griechische Gelehrte Georgios Zachariadis und sein Beitrag zum slawischen Schrifttum im 19. Jahrhundert
No full textAmong the Greek scholars who lived during the 19th century in the north-eastern Balkans, and also in Central Europe, and by their work contributed to the spiritual development of the Balkan Slavs, pride of place must be given to Georgios Zachariadis. Unfortunately, however, no detailed monograph on Zachariadis exists. On this account the problems that arise concerning the life and activities of this Greek scholar are still many and varied. In his study the author tries to fill one part of this lacuna. At the beginning of the work the following are examined, on the basis of new historical evidence: the date and place of Georgios Zachariadis’ birth, his studies and tenure as teacher in the Greek school at Zemun, the Serbian school at Šabac, and the Greek school in Vienna. The author continues his study by analyzing the various works of Zachariadis, which are written on Old Church^Slavonic, and the translations this Greek scholar made from Greek into Old Church Slavonic. Finally, the extent of Georgios Zachariadis’ contribution to Slavonic letters is made clear
The political program of Hellenism in Turkey
No full textTitle: Tό πoλιτικόν πρόγραμμα τοῦ Έλληνισμοῦ έν Tουρκία (The political program of Hellenism in Turkey) Originally published: as a leaflet in Istanbul, 1912 Language: GreekThe excerpts used are from the original which can be found at the ‘Ion Dragoumis archive’ in the Gennadion Library in Athens, pp. 7–9, 11–13, 24–25. About the author Georgios Boussios [1876, Grevena (Ottoman Macedonia) – 1929, Athens]: activist, politician and journalist. He was born into a well-off family of merchants. He c..
Correction: Do chemistry and rheology follow the same laboratory ageing trends in bitumen?
No full text Correction to: Materials and Structures (2022) 55:146 https://doi.org/10.1617/s11527-022-01986-w The article “Do chemistry and rheology follow the same laboratory ageing trends in bitumen?”, written by Georgios Pipintakos, Caitlin Lommaert, Aikaterini Varveri and Wim Van den bergh, was originally published in volume 55, issue 5, ID 146 without open access. With the society's decision to grant Open Choice the copyright of the article changed in February 2023 to © The Author(s) 2022 and the article is forthwith distributed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0. Open access funding enabled and organized by RILEM.Pavement Engineerin
The effect of electrified mobility on the relationship between traffic conditions and energy consumption
No full textDecreasing road transport's harmful effects on environment and health and reducing road accidents are major policy priorities. A variety of technologies could drastically improve air quality, reduce energy consumption and CO2 emissions of road vehicles: in this respect, a prominent trend leverages Electric Vehicles (EVs), supported by improved performance and energy efficiency through connectivity and automation. A noteworthy research question in the transition from Internal Combustion Engine Vehicles (ICEVs) to the alternative technologies, is to understand how Intelligent Transport Systems and other traffic-related measures can contribute to the reduction of fuel consumption and greenhouse gas emissions. In fact, a widely acknowledged tenet assumes that congestion removal or mitigation in presence of ICEVs implies also a reduction of transport-related externalities. This paper explores whether this effect still holds for EVs, by performing an analysis of energy consumption over different vehicle trajectories, under both congested and free-flow conditions. Calculations are carried out using two vehicle simulators: the VT-CPEM (Virginia Tech Comprehensive Power-based Energy consumption model) model for EVs and the CO2MPAS (CO2 model for Passenger and commercial vehicle Simulation) vehicle simulator for the ICEVs, for both electric and conventional cases passengers and freight/commercial powertrains have been analysed. Results are presented on real and simulated data related to four powertrain-vehicle combinations, in terms of general trends of energy/fuel consumption versus speed. Interestingly, results show that, differently from ICEVs, the relationship between congestion and energy consumption underlying EVs can change with higher energy consumption connected to an increased average traffic speed
The evaluation of the effect of PAMAM dendrimers in the solubility of lmiquimod
No full textCharles University, Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Technology Supervisor: Dr. Georgios Paraskevopoulos, Ph.D. Consultant: Eleni Panoutsopoulou Author: Mgr. Thu Thao Truongová Title of the thesis: The evaluation of the effect of PAMAM dendrimers in the solubility of Imiquimod Dendrimers are highly branched polymeric compounds with defined properties. They are used as a nanoparticle delivery system, however concurrently they have significant potential in enhancing the solubility of poorly water soluble drugs. Dendrimers work as drug carriers either by encapsulating the drug in their branched internal structure or they create interactions with the drug in the outer layer via terminal functional groups. The aim of this work was to evaluate the effect of polyamidoamine (PAMAM) dendrimers on the solubility of the hydrophobic drug imiquimod. Solutions of zero, first, second and third generation dendrimers were prepared at six different concentrations. During the experiment, the pH of the solutions was measured before and after addition of excess amount of imiquimod. Subsequently, analysis was performed by high-performance liquid chromatography. The measured results show that the first generation of PAMAM dendrimers is able to increase the solubility of imiquimod in...C2-Internal Abstrakt Univerzita Karlova, Farmaceutická fakulta v Hradci Králové Katedra Farmaceutické technologie Školitel: Dr. Georgios Paraskevopoulos, Ph.D. Konzultant: Eleni Panoutsopoulou Autor: Mgr. Thu Thao Truongová Název rigorózní práce: Hodnocení účinku PAMAM dendrimerů na rozpustnost imiquimodu Dendrimery jsou velmi rozvětvené polymerické sloučeniny s definovanými vlastnostmi. Používají se jako nanočásticový distribuční systém, zároveň však mají významný potenciál v oblasti zvyšování rozpustnosti ve vodě špatně rozpustných léčiv. Dendrimery fungují jako nosiče léčiva buď na principu enkapsulace molekuly léčiva ve své rozvětvené vnitřní struktuře nebo vytvářejí interakce s léčivem ve vnější vrstvě skrze terminální funkční skupiny. Cílem této práce bylo zhodnotit účinek polyamidoaminových (PAMAM) dendrimerů na rozpustnost hydrofobního léčiva imiquimod. Postupně byly připraveny roztoky dendrimerů nulté, první, druhé a třetí generace v šesti různých koncentracích. Během experimentu se měřilo pH roztoků před a po přidání nadbytečného množství imiquimodu. Následně byla provedena analýza vysokoúčinnou kapalinovou chromatografií. Z naměřených výsledků použitých generací PAMAM dendrimerů vyplývá, že první generace těchto dendrimerů dokázala nejvíce zvýšit rozpustnost imiquimodu ve vodném prostředí. Do...Department of Pharmaceutical TechnologyKatedra farmaceutické technologieFaculty of Pharmacy in Hradec KrálovéFarmaceutická fakulta v Hradci Králov
Effect of PAMAM dendrimers on the solubility and the skin permeation of flufenamic acid
No full textUniverzita Karlova, Farmaceutická fakulta v Hradci Králové Katedra Farmaceutické technologie Školitel: Dr. Georgios Paraskevopoulos, Ph.D. Autor: Lenka Novotná Název diplomové práce: Vliv PAMAM dendrimerů na rozpustnost a kožní permeaci kyseliny flufenamové Kyselinu flufenamovou (FFA) patří do skupiny nesteroidních antiflogistik. Léčiva ze skupiny nesteroidních antiflogistik jsou nejhojněji užívané léky na celém světě. Škála použití je velmi rozsáhlá. Účinek léčiv je protizánětlivý, proti bolesti a teplotě. Problém jejich použití, zejména perorálně, tkví ve velkém množství nežádoucích účinků. Pro snížení výskytu nežádoucích účinků lze FFA podávat v lokální formě. Přestup látek přes kožní bariéru je obtížný. Látky musí splňovat určitá kritéria, aby molekuly byly schopné penetrovat přes hydrofilní a zároveň hydrofóbní část lamelární lipidové multivrstvy obsažené v části epidermis. Pro zlepšení rozpustnosti FFA ve vodě bylo využito výhodných vlastností poly(amidoaminových) (PAMAM) dendrimerů. PAMAM dendrimery jsou sférické makromolekuly s velmi dobře organizovanou strukturou. Fungují i jako akceleranty kožní permeace neboli kožní enhancery. Skupina těchto pomocných látek přechodně snižuje propustnost kožní bariéry a usnadňuje transdermální podání léčiv. Mezi další výhodné vlastnosti patří výborná...Charles University, Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Technology Supervisor: Dr. Georgios Paraskevopoulos, Ph.D. Author: Lenka Novotná Title of the thesis: Flufenamic acid (FFA) belongs to the group of non-steroidal anti-inflammatory drugs. Medicines from the group of non-steroidal anti-inflammatory drugs are the most widely used drugs worldwide. The range of uses is very extensive. The effect of the drugs is anti- inflammatory, they also serve against pain and fever. The problem with their use, especially orally, lies in the large number of side effects. To reduce the incidence of adverse effects, FFA can be administered topically. The transfer of substances through the skin barrier is demanding. The substances must meet certain criteria so that the molecules are able to penetrate through the hydrophilic and at the same time hydrophobic part of the lamellar lipid multilayer contained in the epidermis. To improve the solubility of FFA in water, we used the advantageous properties of poly(amidoamine) (PAMAM) dendrimers. PAMAM dendrimers are spherical macromolecules with a very well-organized structure. They work well as skin permeation accelerators or skin enhancers. A group of these excipients temporarily reduces the skin barrier and facilitates the transdermal...Department of Pharmaceutical TechnologyKatedra farmaceutické technologieFarmaceutická fakulta v Hradci KrálovéFaculty of Pharmacy in Hradec Králov
Effect of selected imidazolium ionic liquids on the permeability of human skin during their co-application with model compounds
No full textUniverzita Karlova, Farmaceutická fakulta v Hradci Králové Katedra Farmaceutické technologie Školitel: Dr. Georgios Paraskevopoulos, Ph.D. Autor: Denisa Trávníčková Název diplomové práce: Vliv vybraných imidazoliových iontových kapalin na permeabilitu lidské kůže při jejich ko-aplikaci s modelovými sloučeninami Transdermální aplikace je vzhledem ke snadné aplikaci, vyhnutí se first - pass efektu a velkému povrchu kůže vhodná cesta podání léčivé látky. Hlavní bariérou, která omezuje přístup většiny látek do hlubších vrstev kůže a do systémové cirkulace je stratum corneum. Permeaci léčiv kůži navíc ovlivňuje řada faktorů, zejména fyzikálně-chemické vlastnosti látky. Struktura a funkce SC je zásadní pro udržení kožní bariéry a nalézt způsob k překonání bariérových vlastností kůže, který by nepoškodil kůži, je obtížné. Použití iontových kapalin jako enhancerů kožní penetrace představuje nový směr ve vývoji dermatologických a farmaceutických přípravků. Struktura iontových kapalin umožňuje nespočetnou kombinaci kationtů a aniontů, které by teoreticky mohly vést k syntéze iontových kapalin s požadovanou vlastností či aplikací. Tato práce přispívá k pochopení vlivu dvou imidazolových iontových kapalin na permeační profil modelových látek - theofylinu a sodné soli diklofenaku, při aplikaci na lidskou kůži...Charles University, Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Technology Supervisor: Dr. Georgios Paraskevopoulos, Ph.D. Author: Denisa Trávníčková Title of the thesis: Effect of selected imidazolium ionic liquids on the permeability of human skin during their co-application with model compounds Transdermal application is due to the ease of application, avoiding the first-pass effect and the large surface area of the skin make it a suitable route of administration. The stratum corneum is the main barrier that limits the access of most substances to the deeper layers of the skin and to the systemic circulation. In addition, the permeation of drugs through the skin is influenced by a number of factors, particularly the physicochemical properties of the substance. The structure and function of the SC is critical to the maintenance of the skin barrier, and finding a way to overcome the barrier properties of the skin that does not damage the skin is difficult. The use of ionic liquids as skin penetration enhancers represents a new direction in the development of dermatological and pharmaceutical products. The structure of ionic liquids allows for a myriad of combinations of cations and anions that could theoretically lead to the synthesis of ionic liquids with desired properties...Department of Pharmaceutical TechnologyKatedra farmaceutické technologieFarmaceutická fakulta v Hradci KrálovéFaculty of Pharmacy in Hradec Králov
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