In many Austrian catchments in recent decades an increase in the mean annual air temperature and precipitation has been observed, but only a small change in the mean annual runoff. The main objective of this paper is (1) to analyze alterations in the performance of a conceptual hydrological model when applied in changing climate conditions and (2) to assess the factors and model parameters that control these changes. A conceptual rainfall-runoff model (the TUW model) was calibrated and validated in 213 Austrian basins from 1981–2010. The changes in the runoff model’s efficiency have been compared with changes in the mean annual precipitation and air temperature and stratified for basins with dominant snowmelt and soil moisture processes. The results indicate that while the model’s efficiency in the calibration period has not changed over the decades, the values of the model’s parameters and hence the model’s performance (i.e., the volume error and the runoff model’s efficiency) in the validation period have changed. The changes in the model’s performance are greater in basins with a dominant soil moisture regime. For these basins, the average volume error which was not used in calibration has increased from 0% (in the calibration periods 1981–1990 or 2001–2010) to 9% (validation period 2001–2010) or –8% (validation period 1981–1990), respectively. In the snow-dominated basins, the model tends to slightly underestimate runoff volumes during its calibration (average volume error = –4%), but the changes in the validation periods are very small (i.e., the changes in the volume error are typically less than 1–2%). The model calibrated in a colder decade (e.g., 1981–1990) tends to overestimate the runoff in a warmer and wetter decade (e.g., 2001–2010), particularly in flatland basins. The opposite case (i.e., the use of parameters calibrated in a warmer decade for a colder, drier decade) indicates a tendency to underestimate runoff. A multidimensional analysis by regression trees showed that the change in the simulated runoff volume is clearly related to the change in precipitation, but the relationship is not linear in flatland basins. The main controlling factor of changes in simulated runoff volumes is the magnitude of the change in precipitation for both groups of basins. For basins with a dominant snowmelt runoff regime, the controlling factors are also the wetness of the basins and the mean annual precipitation. For basins with a soil moisture regime, landcover (forest) plays an important role.
Inspired by the work of Sellars, Cumpa (2014, 2018) and Buonomo (2021) have argued that we can evaluate our metaphysical proposals on fundamental categories in terms of their capacity for reconciling the scientific and the manifest image of the world. This criterion of fundamentality would allow us to settle the question of which categories among those proposed in the debate—e.g., substance, structure or facts—have a better explanatory value. The aim of this essay is to argue against a central assumption of the criterion: semantic descriptivism. Specifically, I aim at showing that the criterion rests on the idea that the manifest picture is mostly a description of the world, and thus, it commits us with certain realism. Instead, I argue that at least some of the vocabulary we use to construct our manifest picture of the world, mental vocabulary, is evaluative rather than descriptive and thus creates problems in reconciling the manifest picture with scientific psychology and neurosciences. I conclude with some remarks on alternatives that could provide a way out of the fundamentality criterion.
Suspended sediment dynamics during hydrological events influenced by rainstorms and factors controlling changes in sediment dynamics were investigated in a small basin scale, since small basins can be considered as one of the most important sediment sources. The study focuses on the agricultural microbasin Rybárik, near Považská Bystrica (Western Slovakia). Suspended sediment concentrations were measured during discharge waves in the years 1987-1990, 1992, 2000 and 2001. The behaviour of suspended sediments in watercourses is not only a function of energy conditions, but also a function of sediment availability. The variations in sediment supply and sediment depletion result in so-called hysteresis effects. Thus, suspended sediment concentrations at rising and falling limbs are different for equal discharges. Positive and anti-clockwise hysteresis was observed at Rybárik basin. The procedure of separation of factors controlling sediment dynamics has given more realistic view on production and transport of suspended sediments. It is confirmed that spatial and temporal variability of sediment availability and suspended sediment dilution by the baseflow, mainly in the case of two or more waves following one after another control significantly suspended sediment dynamics. and Keďže malé povodia možno považovať za jeden z hlavných zdrojov sedimentov, na malom povodí bol skúmaný režim plavenín počas hydrologických udalostí spôsobených prívalovými zrážkami, a faktory ovplyvňujúce zmeny v dynamike plavenín. Štúdia bola vykonaná na poľnohospodárskom mikropovodí Rybárik pri Považskej Bystrici. Koncentrácie plavenín boli merané počas prietokových vĺn v rokoch 1987- 1990, 1992, 2000 a 2001. Režim plavenín vo vodných tokoch nie je funkciou len transportnej kapacity toku, ale aj dostupnosti sedimentov. Zmeny v zásobovaní a vyčerpávaní sedimentov spôsobujú tzv. hysterézny efekt. To znamená, že koncentrácie plavenín na stúpajúcej a klesajúcej vetve vlny sú rozdielne pri tých istých prietokoch. V povodí Rybárik bola pozorovaná pozitívna aj opačná hysteréza. Postup izolovania faktorov, ktoré ovplyvňujú dynamiku plavenín, prináša reálnejší obraz o tvorbe a transporte plavenín. Ukazuje sa, že zrieďovanie koncentrácií plavenín základným odtokom a časová a priestorová heterogenita územia z hľadiska dostupnosti sedimentov, predovšetkým v situácii tesne za sebou nasledujúcich prívalových vĺn, sa významne podieľajú na celkovej dynamike plavenín.
I explain how Karl Popper resolved the problem of induction but not the pragmatic problem of induction. I show that Popper's proposed solution to the pragmatic problem of induction is inconsistent with his solution to the problem of induction. I explain how Popper’s falsificationist epistemology can solve the pragmatic problem of induction in the same negative way that it solves the problem of induction.
It is widely assumed that the possibility of faultless disagreement is to be explained by the peculiar semantics and/or pragmatics of special kinds of linguistic construction. For instance, if A asserts “o is F” and B asserts this sentence’s denial, A and B can disagree faultlessly only if they employ the right kind of predicate as their “F”. In this paper, I present an argument against this assumption. Focusing on the special case when the expression of interest is a predicate, I present a series of examples in which the same pairs of sentences are employed, but in different contexts. In some cases, we get an impression of faultless disagreement and in some cases we don’t. I identify a pattern across these contexts and conclude that faultless disagreement is made possible, not by a special kind of predicate, but instead by a special kind of context.
The main purpose of this paper is to compare two pluralistic approaches to knowledge, Goodman’s theory of worldmaking and Feyerabend’s methodological anarchism. It therefore examines firstly, the concept of world-versions, which according to Goodman create our worlds and at the same time are crucial for achieving a better understanding of reality; and secondly, the concept of alternative theories which are built upon pluralism and, according to Feyerabend, secure knowledge and make scientific progress possible. Feyerabend’s concept has been rejected by many, seemingly for its lack of limitations. In line with this argument, I propose that based on the comparison of these two pluralistic approaches, the alternative theories can be understood as a part of worldmaking, for Goodman’s theory has wider applicability since it encompasses not only science but also art. Furthermore, I suggest adopting Goodman’s principle of rightness, the criterion of functionality in his worldmaking, as a criterion within Feyerabend’s methodological anarchism when establishing the prevailing theory. It is to be expected that such a juxtaposition will uncover inconsistencies, in particular regarding boundless relativism and the vague terminology in both conceptions.
Fictional realism allows direct reference theorists to provide a straightfor- ward analysis of the semantics of fictional discourse by admitting into their ontology a set of objects (ficta) that serve as the referents of fictional names. Ficta may be modeled using an axiomatic object theory, but actualist interpretations of the formalism have been the subject of recent objections. In this paper, I provide an interpretation of object theory’s formalism that is consistent with actualism and avoids these objections. Drawing on insights from an actualist semantics for quantified modal logic, a central point in my proposal is to interpret ficta as contingently nonconcrete objects., Fiktivní realismus umožňuje přímým teoretikům poskytnout přímou analýzu sémantiky fikčního diskurzu tím, že do své ontologie připouští soubor objektů (ficta), které slouží jako odkazy fiktivních jmen. Ficta může být modelována pomocí axiomatické objektové teorie, ale aktualistické interpretace formalismu byly předmětem nedávných námitek. V tomto příspěvku poskytuji výklad formalismu objektové teorie, který je v souladu se skutečností a vyhýbá se těmto námitkám. Na základě poznatků z aktuální sémantiky pro kvantifikovanou modální logiku je v mém návrhu ústředním bodem interpretace fikce jako podmíněných nespecifických objektů., and Ceth Lightfield
The study considers the pertinence of Searle’s speech act theory to literary studies, more specifically to the definition of fictional and factual autobiography. Searle’s conception of fictional discourse as a pretended assertion influenced Gérard Genette in his definition of the necessary condition of factual autobiography, which he sees in the identity of the author with the narrator, meaning that in autobiography, the author bears full responsibility for what he or she asserts. According to Genette, if the narrator and the author are not identical, the autobiography is fictional. These theoretical arguments are then applied to the interpretation of Bohumil Hrabal’s trilogy In-House Weddings, Vita Nuova and Gaps and the fictional autobiography Boyhood, Youth and Summertime by John Maxwell Coetzee., Studie zvažuje vhodnost Searleovy teorie řeči k literárním studiím, více specificky k definici smyšlené a faktické autobiografie. Searleovo pojetí fiktivního diskurzu jako předstíraného tvrzení ovlivnilo Gérard Genette v jeho definici nezbytné podmínky faktické autobiografie, kterou vidí v identitě autora s vypravěčem, což znamená, že v autobiografii nese plnou odpovědnost za to, co on nebo on tvrdí. Podle Genette, jestliže vypravěč a autor nejsou identičtí, autobiografie je smyšlená. Tyto teoretické argumenty jsou pak aplikovány na výklad trilogie Bohumila Hrabala In-House Weddings , Vita Nuova a Gaps a fiktivní autobiografieBoyhood, mládí a léto John Maxwell Coetzee., and Jan Tlustý
By addressing fictional names head on, we risk going back to familiar, ordinary names intuitions and missing what is specific about them. I propose a different strategy. My view is grounded on fictional name sentence utterances and on indexed tokens of such sentences, where an index contains the fictional narrator and the time and location of the token. Using the framework of pluri-propositionalism (Perry 2012), I argue that the semantic relation of reference – ''x'' refers to y - where ''x'' is a name, rather than the notion of an object, is central to the debate on fictional names. I also contend that fictional names do not enter into that relation. Tokens of fictional names are individuated with the fictional index of the sentence they originate from. This allows for dispensing with a referent. Indexed fictional name sentence tokens have semantically determined truth conditions, yet they are not truth assessed given facts. In this respect, they have cognitive significance only, and no official or referential content. Indexed fictional name token of sentences are accepted as true, but they are not true. and Tím, že se zaměříme na smyšlené názvy, riskujeme, že půjdeme zpět ke známým, obyčejným názvům intuice a postrádáme, co je o nich specifické. Navrhuji jinou strategii. Můj pohled je založen na fiktivních výrocích o věcech jména a na indexovaných tokenech takových vět, kde index obsahuje fiktivní vypravěče a čas a umístění tokenu. Použití rámce pluri-propositionalism (Perry 2012), já tvrdím, že sémantický vztah reference - ''x'' odkazuje na y - kde ''x'' je název, spíše než pojem objektu, je ústřední pro diskusi o fiktivní jména. Také se domnívám, že fiktivní jména nejsou v tomto vztahu. Tokeny fiktivních jmen jsou individualizovány fiktivním indexem věty, ze které pocházejí. To umožňuje vynechání referenta. Indexované tokeny fiktivních věty o jménech mají sémanticky určená pravdivostní podmínky, avšak vzhledem k faktům nejsou pravdivě hodnoceny. V tomto ohledu mají pouze kognitivní význam a žádný oficiální nebo referenční obsah. Indexované fiktivní jména věty jsou přijímány jako pravdivé, ale nejsou pravdivé.