Full Equivalence Research Articles

Inconsistences persisting in the conceptual structure of thermal physics and the nature of fundamental constants

AbstractConceptual structure of contemporary thermal physics is by no means simple, understandable and free of contradictions or ambiguities. As many students claim, it is a rather complicated doctrine which is far from to be easy comprehensible (Meltzer in Am J Phys 72:1432–1446, 2004). Therefore, in this polemic contribution, originally the summer school lecture, we will address some lesser-known points, which are likely responsible for such a situation. We start with Black’s path breaking discovery of two aspects of heat, namely the “matter of heat” and the “intensity of heat,” which were later identified with the quantities known as entropy (S) and temperature (T). It can be shown that the product of these two quantities can enter the energy balance equation, which is apt to interconnect various parts of physics. The genesis of these key concepts was, however, not straightforward. An original hypothetical model of heat, a subtle imponderable fluid, caloric (ς), was abandoned after the non-critical acceptance of the “milestone of thermodynamics,” Mayer–Joule’s postulate claiming the equivalence of heat and work. Heat then became a pure energy without any material carrier, but with seriously limited transformation abilities. In addition, the situation is also complicated by the very fact that the definition of Kelvin absolute thermodynamic temperature scale (T) is fully based on the caloric theory. Partial reconciliation brought about only introduction of Clausius’ entropy. This, however, was afterward recognized to be practically identical with the Carnot’s caloric. Furthermore, by analogy identification of phenomenological variables S and T with statistical parameters appearing in the kinetic theory has not withstand extension to the domain of special relativity. Thus, the full equivalence between thermodynamics and statistical physics is not feasible. Another realm of problems is generated by the recent tendency in metrology to define units by means of defining constants with fixed numerical values instead of materialized étalons. In case of thermal physics, one can be skeptic about such an approach, because the universal constancy of entropy and its unit, Boltzmann constant k = 1.380649 × .10−23 J K-1, are only unjustified assumptions, which can be a potential source of future difficulties.

Ich zerbreche mir den Kopf: îmi sparg capul? Äquivalenzbeziehungen und falsche Freunde Rumänisch – Deutsch

Abstract Phraseologisms are meaningful in everyday language use and reflect the culture and world view of a people. This work has the following objectives: On the one hand, Romanian somatisms are pointed out and their German equivalents are presented; on the other hand, the focus is on a comparison of Romanian and German phraseologisms under semantic and structural-lexical aspects. This present article is focused on analysing equivalences and false friends between Romanian and German phraseologisms with the lexeme head. The head is the most important part of the human body, as it houses the brain - the organ known for its cognitive functions. The phrasemes of the two languages are analysed according to the three types of equivalence: full equivalence, partial equivalence and semantic equivalence. Among the analysed equivalence types, false friends also appear as a transversal phenomenon. In the analysis section, which is based on idiomatic dictionaries and an internet corpus, these phenomena are analysed in German and Romanian native speakers and verified by examples on the internet.

Full Quantum Equivalence of Group Action DLog and CDH, and More

Full Quantum Equivalence of Group Action DLog and CDH, and More

Enhanced thermomechanical fatigue resistance in W10Re alloys: Microstructural and surface engineering approaches

Thermomechanical fatigue of refractory metals is commonly observed in high-temperature environments like first walls and divertors for proposed fusion reactors or X-ray anodes for medical imaging. Typically, alloying with rhenium or optimized microstructures are employed to counteract or delay the detrimental effects of fatigue in tungsten. Additionally, a novel concept is the utilization of surface structures to compensate cyclic thermal stresses. This work aimed to investigate the combination of these approaches, by comparing two W10Re alloys with vastly different microstructures, as well as engineered surface conditions of varying scales. Samples were subjected to thermocyclic fatigue under pulsed electron beam exposure, mimicking the surface temperatures typically encountered in a rotating X-ray anode. Analysis of several in-situ data streams, post-mortem investigations by metallography, and finite element methods revealed the interplay between microstructure and surface modifications. The columnar microstructure exhibited higher resistance to severe surface damage compared to the globular one, linked to the deflection of cracks along grain boundaries and subsequent melting. Coarse structuring was found to partly relieve the surface stresses during thermal cycling, preventing most of the damage accumulation. A full damage relief and performance equivalence between columnar and globular microstructure was achieved by engineering fine-structured surfaces, which led to a ten-fold increase in fatigue resistance over the non-structured condition.

Congruences of maximum regular subsemigroups of variants of finite full transformation semigroups

Let TX be the full transformation monoid over a finite set X, and fix some a∈TX of rank r. The variant TXa has underlying set TX, and operation f⋆g=fag. We study the congruences of the subsemigroup P=Reg(TXa) consisting of all regular elements of TXa, and the lattice Cong(P) of all such congruences. Our main structure theorem ultimately decomposes Cong(P) as a specific subdirect product of Cong(Tr), and the full equivalence relation lattices of certain combinatorial systems of subsets and partitions. We use this to give an explicit classification of the congruences themselves, and we also give a formula for the height of the lattice.

Lexical and Stylistic Features of Translating Old Russian Literary Monuments into Russian and English Languages (“The Tale of Igor’s Campaign”)

This article explores the peculiarities of translating military vocabulary from the Old Russian literary monument “The Tale of Igor’s Campaign” into Russian and English languages through the analysis of translations by D.S. Likhachov, O.V. Tvorogov (modern Russian language), V. Nabokov, and I. Petrova (English language). The study employed methods such as the method of complete sampling, contextual analysis method, comparative method, and quantitative analysis method. The research focused on 34 lexical units used in 128 contexts. Based on the conducted study, the following conclusions can be drawn. (1) Translators of the aforementioned work into Russian mostly replaced archaic words with contemporary ones etymologically related to the original word, while preserving archaic words to convey historical color in translations. (2) Translations of the work into English showed translators’ tendency towards fidelity to the original text through the use of full and partial equivalents, approximate translation, and the method of generalization (selecting a word with broader meaning). Thus, the analysis of lexical units and their translation methods into modern Russian and English languages revealed translators' inclination to choose the translation variant closest to the original unit.

German modal verbs in secondary meaning and their analogues in Russian

German modal verbs in secondary meaning and their analogues in Russian

Economic distributions, primitive distributions, and demand recovery in monopolistic competition

We link fundamental technological and taste distributions to endogenous economic distributions of prices and firm size (output, profit) generated under monopolistic competition with heterogeneous productivities as per recent Trade and Industrial Organization models. We derive full equivalence properties for monopoly mark-ups, demand shape, marginal revenue, and profits to match distributions of cost, price, output, and profit under monopolistic competition. Demand and one distribution determine the rest. We provide constructive proofs to recover demand and all distributions from just two (e.g., price and cost distributions uncover demand form), and derive restrictions on distribution pairs. Finally, we extend to analyze mark-up distributions.

Is the Bland-Altman plot method useful without inferences for accuracy, precision, and agreement?

This study aims to propose a comprehensive alternative to the Bland-Altman plot method, addressing its limitations and providing a statistical framework for evaluating the equivalences of measurement techniques. This involves introducing an innovative three-step approach for assessing accuracy, precision, and agreement between techniques, which enhances objectivity in equivalence assessment. Additionally, the development of an R package that is easy to use enables researchers to efficiently analyze and interpret technique equivalences. Inferential statistics support for equivalence between measurement techniques was proposed in three nested tests. These were based on structural regressions with the goal to assess the equivalence of structural means (accuracy), the equivalence of structural variances (precision), and concordance with the structural bisector line (agreement in measurements obtained from the same subject), using analytical methods and robust approach by bootstrapping. To promote better understanding, graphical outputs following Bland and Altman's principles were also implemented. The performance of this method was shown and confronted by five data sets from previously published articles that used Bland and Altman's method. One case demonstrated strict equivalence, three cases showed partial equivalence, and one showed poor equivalence. The developed R package containing open codes and data are available for free and with installation instructions at Harvard Dataverse at https://doi.org/10.7910/DVN/AGJPZH. Although easy to communicate, the widely cited and applied Bland and Altman plot method is often misinterpreted, since it lacks suitable inferential statistical support. Common alternatives, such as Pearson's correlation or ordinal least-square linear regression, also fail to locate the weakness of each measurement technique. It may be possible to test whether two techniques have full equivalence by preserving graphical communication, in accordance with Bland and Altman's principles, but also adding robust and suitable inferential statistics. Decomposing equivalence into three features (accuracy, precision, and agreement) helps to locate the sources of the problem when fixing a new technique.

EQUIVALENCE AND LEXICAL ANISOMORPHISM IN BILINGUAL DICTIONARIES

The present paper addresses types of lexical anisomorphism and its treatment in bilingual dictionaries. The most difficult problem in coordinating the source language lexical units with those of the target language is linguistic anisomorphism. Full equivalence is a rare occurrence, found as a rule in terminologies. A vast majority of other cases includes lexical anisomorphism, which requires lexicographic treatment. One should differentiate between lexicological and lexicographic anisomorphism. The former type is much broader and it fully encompasses the latter type. Lexicological anisomorphism is found in the cases where equivalents exhibit differences of any kind. Lexicographic anisomorphism involves only those cases where the difference is relevant in lexicographic treatment. If we exclude rare cases of full equivalence, which do not constitute a problem in lexicographic treatment, the simplest way to classify lexical anisomorphism is to count the number of equivalents in the target language. If no equivalents exist, that is zero equivalence. The second type is multiple equivalence, where the target language has two or more equivalents. Finally, the third type is partial equivalence, where there is one equivalent in the target language, but there are some relevant differences between it and the source language headword. Multiple equivalence can include zero and partial equivalence. There are also cases of pure multiple equivalence. The following types of multiple equivalence based on partial equivalence can be differentiated: connotation, application, organization, syntagmatic, frequency, network, and image. There is a direct connection between the three main types of lexical equivalence and their lexicographic treatment. Zero equivalence should be explained, multiple equivalents should be separated, and with partial equivalents, one should alert the user to the difference. There is no such direct link between subtypes of multiple equivalence and their treatment. However, there are some tendencies: exemplification is common with operators, cotextualization is common in the treatment of application splits, and contextualization is common in the treatment of connotation splits.

The processing of Russian Idioms in Heritage Russian Speakers and L2 Russian Learners

The use of idioms differentiates native speakers (NSs) from second language (L2) learners, whereas the use of idioms by heritage speakers (HSs) might resemble both groups at the same time. This study examines the processing of idioms in heritage Russian speakers (N = 16) and L2 Russian learners (N = 16), comparing them to Russian native speakers as a control group (N = 23). Heritage speakers acquire Russian similarly to the first language acquisition in their family. This enables them to have a more natural approach to language than L2 learners. However, heritage speakers are also similar to L2 learners since their Russian language competence is still not native-like due to insufficient language input. To test whether idiom processing in HSs resembles that of L2 learners or rather in NSs, we conducted a self-paced reading experiment. The idioms were divided into three categories based on the cross-language influence factor: having full English equivalents, semi-equivalents, or no-equivalents. Our findings show no significant difference in idiom processing in HSs and L2 learners, whereas their processing significantly differed from that by NSs of Russian. Also, we found different processing for full and semi-equivalent idioms (in the HS and L2 groups). Full and no-equivalent idioms were also processed differently in all the three groups.

On quantum Poisson-Lie T-duality of WZNW models

We study Poisson-Lie T-duality of the Wess-Zumino-Novikov-Witten (WZNW) models which are obtained from a class of Drinfel’d doubles and its generalization. In this case, the resultant WZNW models are known to be classically self-dual under Poisson-Lie T-duality. We describe an explicit construction of the associated currents, and discuss the conformal invariance under this duality. In a concrete example of the SU(2) WZNW model, we find that the self-duality is represented as a chiral automorphism of the sû\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ \\hat{\\mathfrak{su}} $$\\end{document}(2) affine Lie algebra, though the transformation of the currents is non-local and non-linear. This classical automorphism can be promoted to the quantum one through the parafermionic formulation of sû\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$ \\hat{\\mathfrak{su}} $$\\end{document}(2), which in turn induces an isomorphism of the WZNW model. We thus find a full quantum equivalence of the dual pair under Poisson-Lie T-duality. The isomorphism is represented by a sign-change of a chiral boson or the order-disorder duality of the parafermionic conformal field theory as in Abelian T-duality on tori or in the mirror symmetry of the Gepner model.

СРАВНИТЕЛЬНЫЙ АНАЛИЗ НОВОГО СЛОВАРЯ ДЕСКРИПТОРОВ ЛИЧНОСТИ С ТЕЗАУРУСОМ ЛИЧНОСТНЫХ ЧЕРТ А.Г. ШМЕЛЕВА

We compared a new Russian dictionary of personality descriptors with the thesaurus of personality traits by Alexander Shmelev and his colleagues developed in the 1980s and 1990s. In the new dictionary, the descriptors were selected from the Open Corpus, a global Russian word collection which had included over 140,000 adjectives, nouns, verbs, and adverbs. We utilized a “German methodology” of the word selection which comprises a three-stage process; in so doing, we consecutively yielded a full (2,384 words) and abridged (1,253 words) dictionaries of the personality descriptors, with cognate synonyms and antonyms being removed from the latter. While developing the full dictionary, we engaged groups of experts who varied in their age, sex, and expertise, in amounts from 6 to 45 experts per group. In the full dictionary, full equivalents to contents of the Shmelev’s thesaurus were found for 624 words, whereas 1,353 words present in the Shmelev’s thesaurus were excluded (the reasons for it are discussed in the paper). From the Shmelev’s thesaurus, 109 words were absent in our initial 140,000 list, whereas 629 words in our dictionaries were absent in the Shmelev’s thesaurus. Overall, the Shmelev’s thesaurus was 26.2% equal to our full dictionary and 49.8% to the abridged dictionary. These differences do not imply different findings to be potentially revealed between the dictionaries, as the content of core personality characteristics can remain the same over the dictionaries. Consequently, estimations of the global Russian personality trait structure using either dictionary could closely fit. Conversely, the methodology of including or excluding descriptors in the particular dictionary could explain why the structures of personality were different.

Formation of a unified regulatory space of the agricultural sector of Ukraine with the EU internal market: processes and problems

The article is devoted to summarizing achievements and miscalculations in terms of the formation of a unified regulatory space of the domestic agricultural sector and the European internal market since the second half of the 2010s, as well as assessing the possibilities of achieving their full equivalence. It was established that the unified regulatory space is formed by the following components: technical regulation, sanitary and phytosanitary measures, safety of food products and animal feed. The contribution of the components of technical regulation to the formation of a domestic regulatory system equivalent to the basic European system of technical regulation is assessed. It is argued that during the research period, the national fund of standards expanded significantly (more than 25,000 standards), and almost ¾ of them are harmonized with European and world standards. It is noted that the Program of the Development of the Reference Base has not been fully implemented as a result of Russian aggression, and the certification of safety and quality systems, products, processes and services and personnel is carried out only by accredited conformity assessment bodies (CABs). It has been found that the accreditation of domestic CABs is carried out by the National Accreditation Agency of Ukraine, which in terms of accreditation interacts only with the signatories of international agreements on accreditation (EA MLA, ILAC MRA, IAF MLA). Since April 2016, state market surveillance has been carried out by the State Service of Food Safety and Consumer Protection. Special control regimes for manufactured products are based on the active implementation of certified safety and quality systems by producers of organic products and agricultural raw materials for the production of children's, dietary and special food products, as well as advanced management systems for the export of agricultural products to foreign markets. It has been established that Ukraine has ensured compliance with the European requirements of its own sanitary and phytosanitary measures (SPM) in the field of agriculture and measures regarding the safety of food products and animal feed. This is evidenced by the following indicators: a total of 380 enterprises export agricultural products, of which 162 enterprises export food products. The fulfillment of the obligations stipulated by the Association Agreement between Ukraine and the EU has been systematized, which includes fulfilled obligations and intermediate results and totals 55 %. At the same time, the intermediate statuses of «Early» execution and «Advanced» execution are taken into account with weighting factors of 0.3 and 0.7, respectively. This assessment includes the following components: «perfect» performance is 30,4 %; «advanced» - 26.2 %; «early» stage – 21 %; fulfillment of obligations has not started – 20,8 %; the fulfillment of 1,6 % of the obligations has a critical inconsistency with the relevant norms of EU law. It was concluded that the activities related to the harmonization of domestic legal regulation of ensuring the quality and safety of products in agrofood chains to the practice of the European Union need to be intensified in order to complete it, as it will have a positive effect on the successful postwar recovery of the agricultural sector and the country as a whole. Key words: agricultural sector of Ukraine, EU internal market, unified regulatory space, sanitary and phytosanitary measures, food safety

Monocytes and T cells incorporated in full skin equivalents to study innate or adaptive immune reactions after burn injury.

Thermal injury often leads to prolonged and excessive inflammation, which hinders the recovery of patients. There is a notable absence of suitable animal-free models for investigating the inflammatory processes following burn injuries, thereby impeding the development of more effective therapies to improve burn wound healing in patients. In this study, we established a human full skin equivalent (FSE) burn wound model and incorporated human peripheral blood-derived monocytes and T cells. Upon infiltration into the FSEs, the monocytes differentiated into macrophages within a span of 7 days. Burn-injured FSEs exhibited macrophages with increased expression of HLA-DR+ and elevated production of IL-8 (CXCL8), in comparison to uninjured FSEs. Among the T cells that actively migrated into the FSEs, the majority were CD4+ and CD25+. These T cells demonstrated augmented expression of markers associated with regulatory T cell, Th1, or Th17 activity, which coincided with significant heightened cytokine production, including IFN-γ, IL-4, IL-6, IL-8, IL-10, IL-12p70, IL-17A, IP-10 (CXCL10), and TGF-β1. Burn injury did not impact the studied effector T cell subsets or cytokine levels. Collectively, this study represents a significant advancement in the development of an immunocompetent human skin model, specifically tailored for investigating burn-induced innate or adaptive immune reactions at the site of burn injury.

Averaging material tensors of any rank in textured polycrystalline materials: Extending the scope beyond crystallographic proper point groups

In many modern micromechanical applications, there is usually a need to perform the orientational averaging of certain material tensors weighted by an orientation distribution function (ODF). The computation of these averages is seen to be very simplified by means of the so-called generalized spherical harmonic method (GSHM), which is based on the classical assumption that the ODFs are defined in the rotation group SO(3). A priori, this makes the averaging strictly applicable only to polycrystals with crystallite symmetry defined by one of the 11 proper point groups. Despite the interest in the study of materials belonging to any of the other 21 point groups, few studies have properly considered such cases. This is crucial for physical properties represented by odd-order tensors such as the third-order linear piezoelectric tensor. The goal of this work is to extend the applicability of the GSHM to crystallites with symmetry that belongs to the orthogonal group O(3). Thus, a simple formula is provided for the averaging of material tensors of any rank in textured polycrystals containing crystallites with symmetry defined by any of the 32 crystallographic point groups. Our work presents a simple yet rigorous method for indirect averaging on the orthogonal group, using averaging on SO(3). We demonstrate the full equivalence between our proposed method and averaging properly on O(3) through a detailed proof provided in this paper. This proof represents a significant contribution to the field, providing a practical and reliable approach for researchers working with crystalline materials. The results reported here confirm the validity of closed-form expressions previously derived by the authors for piezoelectric materials.

Did the early full genome sequencing of yeast boost gene function discovery?

BackgroundAlthough the genome of Saccharomyces cerevisiae (S. cerevisiae) was the first one of a eukaryote organism that was fully sequenced (in 1996), a complete understanding of the potential of encoded biomolecular mechanisms has not yet been achieved. Here, we wish to quantify how far the goal of a full list of S. cerevisiae gene functions still is.ResultsThe scientific literature about S. cerevisiae protein-coding genes has been mapped onto the yeast genome via the mentioning of names for genomic regions in scientific publications. The match was quantified with the ratio of a given gene name’s occurrences to those of any gene names in the article. We find that ~ 230 elite genes with ≥ 75 full publication equivalents (FPEs, FPE = 1 is an idealized publication referring to just a single gene) command ~ 45% of all literature. At the same time, about two thirds of the genes (each with less than 10 FPEs) are described in just 12% of the literature (in average each such gene has just ~ 1.5% of the literature of an elite gene). About 600 genes have not been mentioned in any dedicated article. Compared with other groups of genes, the literature growth rates were highest for uncharacterized or understudied genes until late nineties of the twentieth century. Yet, these growth rates deteriorated and became negative thereafter. Thus, yeast function discovery for previously uncharacterized genes has returned to the level of ~ 1980. At the same time, literature for anyhow well-studied genes (with a threshold T10 (≥ 10 FPEs) and higher) remains steadily growing.ConclusionsDid the early full genome sequencing of yeast boost gene function discovery? The data proves that the moment of publishing the full genome in reality coincides with the onset of decline of gene function discovery for previously uncharacterized genes. If the current status of literature about yeast molecular mechanisms can be extrapolated into the future, it will take about another ~ 50 years to complete the yeast gene function list. We found that a small group of scientific journals contributed extraordinarily to publishing early reports relevant to yeast gene function discoveries.

Introduction of innovations in joint arthroplasty: Recommendations from the 'EFORT implant and patient safety initiative'.

With the implementation of the new MDR 2017/745 by the European Parliament, more robust clinical and pre-clinical data will be required due to a more stringent approval process. The EFORT Implant and Patient Safety Initiative WG1 'Introduction of Innovation', combined knowledge of orthopaedic surgeons, research institutes, orthopaedic device manufacturers, patient representatives and regulatory authorities to develop a comprehensive set of recommendations for the introduction of innovations in joint arthroplasty within the boundaries of MDR 2017/745. Recommendations have been developed to address key questions about pre-clinical and clinical requirements for the introduction of new implants and implant-related instrumentation with the participation of a steering group, invited by the EFORT Board in dialogue with representatives from European National Societies and Speciality Societies. Different degrees of novelty and innovation were described and agreed on in relation to when surgeons can start, using implants and implant-related instrumentation routinely. Before any clinical phase of a new implant, following the pre-market clinical investigation or the equivalent device PMCF pathway, it is a common understanding that all appropriate pre-clinical testing (regulatory mandatory and evident state of the art) - which has to be considered for a specific device - has been successfully completed. Once manufacturers receive the CE mark for a medical device, it can be used in patients routinely when a clinical investigation has been conducted to demonstrate the conformity of devices according to MDR Article 62 or full equivalence for the technical, biological and clinical characteristics has been demonstrated (MDR, Annex XIV, Part A, 3.) and a PMCF study has been initiated.

The Design and Developments of Protein‐Polysaccharide Biomaterials for Corneal Tissue Engineering

AbstractCorneal blindness is explained by a large reduction in vision loss caused by acute and chronic corneal diseases and/or disorders. Due to the severe unavailability of donor corneas, immune rejection, and the side effects of keratoprosthesis (KPro), vision‐impaired patients are often unable to restore their vision. Corneal tissue engineering appears to be a promising method using natural polymers made from different layers of corneal cells such as epithelium, stroma, and endothelium or full tissue equivalents. Proteins and polysaccharides are able to mimic the chemical composition of the native extracellular matrix (ECM), which has been extensively studied for corneal tissue engineering. Additionally, protein‐based materials are highly favored in corneal regenerative therapy as they have the proper cell‐binding sites for cell adhesion, corneal innervation regeneration, and oxidative stress suppression, while polysaccharide‐based materials can also promote cell proliferation and adhesion as well as ocular permeability. Herein, a comprehensive review of various biomaterials based on natural proteins (fibrin, fibrinogen, silk fibroin, collagen, gelatin, and serum albumin) and polysaccharides (chitin, chitosan, hyaluronic acid, alginate, cellulose, and gellan gum) for corneal tissue engineering are provided. The protein‐polysaccharide biomaterials are mainly used in the form of hydrogels, films, scaffolds, sutures, eye drops, nanocarriers, and nanocapsules to treat ocular diseases that cause blindness, such as corneal wounds, corneal ulcers, Goldenhar syndrome, corneal endothelium and stroma defects, corneal neovascularization, etc. In this review, insight is provided into recent developments in the areas of biomaterial design, cross‐linking strategy, corneal cell selection, and frontiers that are expected to offer researchers support and creativity in the development of corneal regenerative medicine.

Issues in the translation equivalence of basic emotion terms

Translation equivalence of emotion terms has increasingly become a key issue of study design in emotion psychology. Here, the translation equivalence of basic emotion terms (anger, disgust, fear, joy, sadness, surprise) in English and Polish was quantified. Two databases of the lexicalizations of these basic emotions were used (1759 English; 577 Polish terms). Both collections were subjected to a translation-backtranslation procedure with four professional translators. Rates of agreement on translation, backtranslation, and backtranslation accuracy were used to calculate the translation equivalence. 5.12% of English and 4.68% of the Polish emotion terms were found to have full translation equivalents. Over 80% of terms in both languages had only partial translation equivalents. The results indicate that the fundamental differences in emotion term granularity and the morpho-semantic makeup of the languages impacts their degree of translation equivalence. The implications for the research on emotions and language in cross-cultural contexts are discussed.