Evaluation of the carbon footprint of the Study and Information Centre of the University of Szeged

Measuring the CO2 emission to the atmosphere has become significantly important due to the monitoring demand of pollutant emission based on the directives of the Kyoto Protocol. The carbon quota system has created strict regulations for measuring the CO2 emission in certain industries, internalizing the negative external effect of pollution created by human activity. As the built infrastructure is responsible for 40% of CO2 emission, this study focuses on the evaluation of the carbon footprint of the Study and Information Centre, which is one of the largest and most frequently visited main buildings of the University of Szeged [1]. The data collection used for the evaluation was conducted in the first quarter of 2020 and contains information for all three scopes (fuel combustion, company vehicles, fugitive emission – purchased electricity, heat and steam – purchased goods and services, business travel, waste disposal, transportation, investments). In the process of data collection, the eating habits, selective waste collection and travelling methods were covered in a visitor/employee survey as well. The results highlighted in this paper will provide a basis for further carbon reduction investments, protocols and events held for shaping the visitors’ and employees’ consciousness after the COVID 19 pandemic. Keyword: Environmental impact, carbon footprint, Bilan Carbone, higher education, travel, meal

Models and the crisis The pricing and risks of synthetic CDOs

We shortly discuss the mathematical modeling and its problems of one of the structured credit derivatives, the synthetic CDOs. These financial products were among the favorites prior to the crisis, and there was a general view that the mathematical models caused or at least boosted it. We focus only on the mathematical description of these derivatives, therefore our analysis concentrates purely on the problems coming directly from the model, we ignore the related practical problems. We find that not only the tools used in the modeling were inappropriate, but the principle used for pricing was also not correct in the framework of risk-neutral pricing. To our knowledge no one has highlighted these theoretical problems so far.well as loan use pattern of the members.

Methods to Decrease Carbon Emission at the University of Szeged

The implementation of innovations and technologies to decrease carbon emission is one of the main priorities that the University of Szeged is striving to achieve. Although, effective investments cannot be carried out without proper measurement systems in energy management and carbon emission monitoring. Understanding the importance of proper measurement, the University of Szeged has decided to calculate the whole carbon footprint of one of its main buildings, namely, the Study and Information Centre with the help of KÖVET association. The carbon evaluation uses data of 2019 and contains the direct and indirect carbon emission of building management, and of its employees’ and visitors’. This calculation will be the basis of further carbon reduction investments, protocols and events held for shaping the visitors’ and employees’ consciousness. In parallel with the evaluation, the University of Szeged has made some huge steps to decrease carbon emission factors. For instance, a newly installed visitor monitoring system regulates the electricity usage of ventilation in the most used areas of the Study and Information Centre based on the actual number of visitors present in the building. Furthermore, from April 2020, five electric cars substitute the most driven cars of the University in urban areas, rapidly decreasing the direct carbon emission in the city

The incomplete Analytic Hierarchy Process and Bradley-Terry model: (in)consistency and information retrieval

Several methods of preference modeling, ranking, voting and multi-criteria decision making include pairwise comparisons. It is usually simpler to compare two objects at a time, furthermore, some relations (e.g., the outcome of sports matches) are naturally known for pairs. This paper investigates and compares pairwise comparison models and the stochastic Bradley-Terry model. It is proved that they provide the same priority vectors for consistent (complete or incomplete) comparisons. For incomplete comparisons, all filling in levels are considered. Recent results identified the optimal subsets and sequences of multiplicative/additive/reciprocal pairwise comparisons for small sizes of items (up to n = 6). Simulations of this paper show that the same subsets and sequences are optimal in case of the Bradley-Terry and the Thurstone models as well. This, somehow surprising, coincidence suggests the existence of a more general result. Further models of information and preference theory are subject to future investigation in order to identify optimal subsets of input data

Élelmiszerek toxikus szennyeződéseinek vizsgálata III. : vékonyréteg kromatográfiás módszer alkalmazása alkaloid szennyeződések kimutatására

Die Verfasser schildern die Vorteile der dünnschichtchromatographischen Methode, z. B. im Falle der Trennung, Identifizierung von toxischen Verunreinigungen (Alkaloiden) unter Verwendung von mit Handtechnik verfertigten, Silicagel G Schiehten, sowie aus Silicagel G-Aluminiutnoxid Mischungen gelanges ihnen eine efbriedigende Trennung von 17 verschiedenen Alkaloiden zu erreichen. Mit Gemischen Chloroform-Aethylalkohol und Benzol-Methylalkohol in verschiedenen Proportionen als Entwickler erhielten sie gute Resultate, selbst bei zu identischen Gruppen gehörenden Alkaloiden. The advantages offered by the thin-layer chromatographic method e.g. in respect to the separation and identification of toxic contaminants (alkaloids) are discussed. On applying layers consisting of silica gel G, and of a mixture of silica gel G and alumina prepared by a manual technique, it was possibile to attain satisfactory separations in case of 17 different alkaloids. Good results were attained even with alkaloids belonging to identical groups, when various mixtures of chloroform and ethanol, and benzene and methanol were applied as developing agents

A Thurstone módszer alkalmazása sporteredmények elemzésére a 2020/2021-es női kézilabda Bajnokok Ligája példáján = The Application of the Thurstone Method For Evaluating Sports Results – Presenting on the EHF Women Handball Championship

Ebben a tanulmányban sporteredmények kiértékelésének egy lehetséges módját mutatjuk be. Az alkalmazott Thurstone módszer a mérkőzések eredményeit páros összehasonlítások eredményeinek fogja fel. Az egyes csapatok teljesítményeit véletlen mennyiségeknek tekinti, amiknek a várható értékét maximum likelihood módszerrel becsüli. A becsült várható értékek sorrendje adja a csapatok sorrendjét. A módszer előnye, hogy nem csak körmérkőzés és nem csak egyforma számú lejátszott mérkőzés esetén működik; figyelembe veszi az ellenfél erősségét; alkalmas különböző csoportok összefésülésére, valamint további mérkőzések eredményeinek előrejelzésére. A módszert az EHF női kézilabda Bajnokok Ligája eredményein keresztül illusztráljuk. Megmutatjuk, hogy a csoportkörökben ténylegesen lejátszott mérkőzések eredményeit figyelembe véve az erősségek megadhatók. Az A csoport legerősebbje a Metz Handball, a hivatalos eredménnyel szemben, míg a B csoport legerősebbje a Győri Audi KC lett. Előre jeleztük a legjobb nyolc csapatot és a Final Four résztvevőit, felhasználva a csoportkörök eredményeit és a csoportbeli legjobbaknak a másik csoportbeli leggyengébbek elleni egy-egy győztes meccsét. Végezetül megállapíthatjuk, hogy a módszer helyesen jelezte előre a Vipers Kristiandsand kupagyőzelmét. = In this paper a possible method for evaluation of sports results is presented. The applied Thurstone method considers the results of the matches as the results of paired comparisons. Performances of the teams are random variables, and their expectations are estimated by maximum likelihood method. Ranking of the expectations provides ranking of the teams. The advantages of the method are the followings: it works without the requirement of equal numbers of matches, takes into consideration the strength of the opponents, and it is suitable for interweaving different groups and forecasting further results. Use of the method is illustrated through the results of the Women’s EHF Champions League. We present that ranks of the groups can be set up based on the played matches. The best team of Group A is Metz Handball, opposite to the official result; the best team of Group B is Győri Audi KC. Participants of the Quarter Final and the Final Four are forecasted based on the results in the group phase and on the results of the best teams against the weakest teams in the other groups. Finally, the method correctly predicts the winner of the Cup, namely the Vipers Kristiandsand