Is Captain Kirk a natural blonde? Do X-ray crystallographers dream of electron clouds? Comparing model-based inferences in science with fiction

Scientific models share one central characteristic with fiction: their relation to the physical world is ambiguous. It is often unclear whether an element in a model represents something in the world or presents an artifact of model building. Fiction, too, can resemble our world to varying degrees. However, we assign a different epistemic function to scientific representations. As artifacts of human activity, how are scientific representations allowing us to make inferences about real phenomena? In reply to this concern, philosophers of science have started analyzing scientific representations in terms of fictionalization strategies. Many arguments center on a dyadic relation between the model and its target system, focusing on structural resemblances and “as if” scenarios. This chapter provides a different approach. It looks more closely at model building to analyze the interpretative strategies dealing with the representational limits of models. How do we interpret ambiguous elements in models? Moreover, how do we determine the validity of model-based inferences to information that is not an explicit part of a representational structure? I argue that the problem of ambiguous inference emerges from two features of representations, namely their hybridity and incompleteness. To distinguish between fictional and non-fictional elements in scientific models my suggestion is to look at the integrative strategies that link a particular model to other methods in an ongoing research context. To exemplify this idea, I examine protein modeling through X-ray crystallography as a pivotal method in biochemistry

The pragmatics of specialized communication

El presente artículo pretende poner de manifiesto la importancia de la pragmática en relación con la comunicación especializada. La estructura, el contenido y la terminología de los textos especializados se ven afectados por factores como la propia situación comunicativa y el conocimiento, intenciones, expectativas y creencias previos del emisor del texto. La transmisión de tal significado es difícil incluso en una sola lengua. Cuando la transmisión se produce entre dos lenguas, como es el caso de cualquier acto de traducción, las dificultades se multiplican. Por esta razón, es fundamental que los traductores sean conscientes de cómo la pragmática, más que ningún otro componente del lenguaje, puede afectar de forma decisiva a su actividad profesional

Налогообложение в реформах управления государственными финансами

Общепринятые теоретические подходы к реформированию государственной экономики, как правило, вполне пригодны для целей управления изменениями налоговых систем и их составляющих. В частности, в налоговом администрировании особенно проблемным представляется всемерное обеспечение реализации принципов горизонтальной справедливости, а также внедрение подходов, при которых для налогоплательщиков выполнение обязательств по внесению платежей становится более выгодным, чем уклонение от их уплаты. Во многих развивающихся странах неспособность правительства в связи с политическими причинами реализовать задекларированные программы часто является основным препятствием социально-экономического развития. Имплементация многих инициатив по реформированию не всегда успешна из-за отсутствия четких стратегий в государственной политике структурных изменений. Широко известны модели применения новых подходов в системах управления государственными финансами, в частности, при формировании и движении доходов, расходов и долгов. При стандартном анализе налоговых систем часто игнорируется результативность налогового администрирования, связанная с трансакционными издержками и влиянием теневой экономики: речь идет о затратах плательщиков обязательных платежей и сборов и налоговых органов, а также об иных, не подлежащих количественной оценке составляющих налогообложения, включая мотивацию нарушений законодательства. Большое значение имеет налоговое поведение, предотвращение оппортунизма, регулирование способов публичного раскрытия информации, применение системных инструментов взимания налогов. При разработке детальных планов реформирования необходимо стремиться к максимальной эффективности непрерывных циклов движения финансовых ресурсов в доходах и расходах, а также учитывать угрозы нарушения бюджетных процессов, при этом одним из главных должен быть вопрос выбора целей и приоритетов. Известны случаи, когда донорское сообщество и международные организации настаивали на необходимости внедрения определенных образцов «лучшей практики», особенно если реформирование осуществлялось при их финансовой поддержке. Отдавая должное многим позитивным примерам, следует иметь в виду, что для налоговой системы каждой страны характерны специфические черты, поэтому эффективность ее реформирования во многом будет зависеть от учета местных особенностей. В целом задача управления изменениями в системах государственных финансов усложняется внешними и внутренними факторами неопределенности, поэтому при любых обстоятельствах необходимо обеспечивать непрерывность бюджетного процесса и исполнение государством своих конституционных обязательств. Регуляторная функция экономики должна быть направлена на реализацию целей устойчивого экономического развития, соответственно, в рамках налоговой системы, как стратегического элемента госрегулирования, должны работать эффективные механизмы налогов, сборов, а также льгот и преференций во взаимосвязи с расходными статьями, трансфертами и субсидиями.Generally, standard theoretical approaches to reforming national economy are quite usable for goals of managing changes of taxation systems and their components. In particular, of most problematic issue for tax administration is all-round provision of implementing principles of horizontal justice, as well as introducing the approaches which allow the execution of commitments on making payments by taxpayers to be more profitable than evasion. In many developing countries, due to political reasons the government’s inability to implement their declared programs is frequently the main obstacle to improving the socio-economic progress. Implementation of many reform initiatives is not always successful due to absence of clear strategies in governmental policy of structural transformations. There are wide known models of applying new approaches in systems of public finance management (PFM), particularly, in regard of formation and dynamics of revenues, expenses, debts. The standard analysis of tax systems ignores, as a rule, the efficiency of tax administration connected with transaction costs and shadow economy influence: the issue is about the expenses, on one hand, for payers of obligatory payments and levies, and on the other hand, for taxation authorities, as well as about the other taxation components, non-subject to quantitative assessment, including motivation of breaching legislation. Of great significance is tax behavior, prevention of opportunism, regulation of not only tax rates and taxation basis but also of ways of public information accessibility, application of systemic toolkits of tax collection. While developing detailed plans of reforming, it is necessary to strain after maximum efficiency of continuous cycles of financial resource movements in terms of revenues and expenditures, as well as to consider challenges for interruption of the budget processes. At that, one of the main issue is, obviously, selection of targets and priorities. There are known cases, when the donor community and international organizations insist on “the best practices” introduction, especially if the reforming is carried out with their financial support. In justice to numerous positive examples, it should be borne in mind that each taxation system of every country is characterized by their specific traits, so the efficiency of its reforming will at large depend on considering local features. On the whole, the task of managing changes in the public finance systems is getting more complicated in the context of external and internal factors of uncertainty. Thus, in any circumstances it is vital to ensure continuity of the budget process, as well as execution by the state of its constitutional obligations. The regulatory potential of economy should be focused on implementing sustainable economic development goals. Accordingly, in the taxation system framework, as a strategic tool for governmental regulation, there must function efficient mechanisms of taxes and levies, as well as benefits and preferences in coordination with expenditure items, transfers and subsidies

Measuring University Contributions to Regional Economies: A Discussion of Guidelines for Enhancing Credibility

In light of tight state fiscal accounts, increased competition among all government service providers for scarce resources, and a poorly performing national economy, public universities are under increasing pressure to demonstrate their worth to regional or statewide economies.� This has resulted in a proliferation of university economic impact studies.This paper is a guide to assist public university economic impact practitioners plan, structure, evaluate, and disseminate higher education economic information that can be used for policy development, general planning, and overall university relations.� It provides some basic considerations, cautions, and checks that university economic impact studies should keep in mind when engaging in this activity.�university; university economic impact; guidelines

Learning Functional Prepositions

In first language acquisition, what does it mean for a grammatical category to have been acquired, and what are the mechanisms by which children learn functional categories in general? In the context of prepositions (Ps), if the lexical/functional divide cuts through the P category, as has been suggested in the theoretical literature, then constructivist accounts of language acquisition would predict that children develop adult-like competence with the more abstract units, functional Ps, at a slower rate compared to their acquisition of lexical Ps. Nativists instead assume that the features of functional P are made available by Universal Grammar (UG), and are mapped as quickly, if not faster, than the semantic features of their lexical counterparts. Conversely, if Ps are either all lexical or all functional, on both accounts of acquisition we should observe few differences in learning. Three empirical studies of the development of P were conducted via computer analysis of the English and Spanish sub-corpora of the CHILDES database. Study 1 analyzed errors in child usage of Ps, finding almost no errors in commission in either language, but that the English learners lag in their production of functional Ps relative to lexical Ps. That no such delay was found in the Spanish data suggests that the English pattern is not universal. Studies 2 and 3 applied novel measures of phrasal (P head + nominal complement) productivity to the data. Study 2 examined prepositional phrases (PPs) whose head-complement pairs appeared in both child and adult speech, while Study 3 considered PPs produced by children that never occurred in adult speech. In both studies the productivity of Ps for English children developed faster than that of lexical Ps. In Spanish there were few differences, suggesting that children had already mastered both orders of Ps early in acquisition. These empirical results suggest that at least in English P is indeed a split category, and that children acquire the syntax of the functional subset very quickly, committing almost no errors. The UG position is thus supported. Next, the dissertation investigates a \u27soft nativist\u27 acquisition strategy that composes the distributional analysis of input, minimal a priori knowledge of the possible co-occurrence of morphosyntactic features associated with functional elements, and linguistic knowledge that is presumably acquired via the experience of pragmatic, communicative situations. The output of the analysis consists in a mapping of morphemes to the feature bundles of nominative pronouns for English and Spanish, plus specific claims about the sort of knowledge required from experience. The acquisition model is then extended to adpositions, to examine what, if anything, distributional analysis can tell us about the functional sequences of PPs. The results confirm the theoretical position according to which spatiotemporal Ps are lexical in character, rooting their own extended projections, and that functional Ps express an aspectual sequence in the functional superstructure of the PP

Looking Beyond Label Noise: Shifted Label Distribution Matters in Distantly Supervised Relation Extraction

In recent years there is a surge of interest in applying distant supervision (DS) to automatically generate training data for relation extraction (RE). In this paper, we study the problem what limits the performance of DS-trained neural models, conduct thorough analyses, and identify a factor that can influence the performance greatly, shifted label distribution. Specifically, we found this problem commonly exists in real-world DS datasets, and without special handing, typical DS-RE models cannot automatically adapt to this shift, thus achieving deteriorated performance. To further validate our intuition, we develop a simple yet effective adaptation method for DS-trained models, bias adjustment, which updates models learned over the source domain (i.e., DS training set) with a label distribution estimated on the target domain (i.e., test set). Experiments demonstrate that bias adjustment achieves consistent performance gains on DS-trained models, especially on neural models, with an up to 23% relative F1 improvement, which verifies our assumptions. Our code and data can be found at \url{https://github.com/INK-USC/shifted-label-distribution}.Comment: 13 pages: 10 pages paper, 3 pages appendix. Appears at EMNLP 201

Event processing in the visual world:projected motion paths during spoken sentence comprehension

Motion events in language describe the movement of an entity to another location along a path. In 2 eye-tracking experiments, we found that comprehension of motion events involves the online construction of a spatial mental model that integrates language with the visual world. In Experiment 1, participants listened to sentences describing the movement of an agent to a goal while viewing visual scenes depicting the agent, goal, and empty space in between. Crucially, verbs suggested either upward (e.g., jump) or downward (e.g., crawl) paths. We found that in the rare event of fixating the empty space between the agent and goal, visual attention was biased upward or downward in line with the verb. In Experiment 2, visual scenes depicted a central obstruction, which imposed further constraints on the paths and increased the likelihood of fixating the empty space between the agent and goal. The results from this experiment corroborated and refined the previous findings. Specifically, eye-movement effects started immediately after hearing the verb and were in line with data from an additional mouse-tracking task that encouraged a more explicit spatial reenactment of the motion event. In revealing how event comprehension operates in the visual world, these findings suggest a mental simulation process whereby spatial details of motion events are mapped onto the world through visual attention. The strength and detectability of such effects in overt eye-movements is constrained by the visual world and the fact that perceivers rarely fixate regions of empty space

Opening up to big data: computer-assisted analysis of textual data in social sciences

"Two developments in computational text analysis may change the way qualitative data analysis in social sciences is performed: 1. the availability of digital text worth to investigate is growing rapidly, and 2. the improvement of algorithmic information extraction approaches, also called text mining, allows for further bridging the gap between qualitative and quantitative text analysis. The key factor hereby is the inclusion of context into computational linguistic models which extends conventional computational content analysis towards the extraction of meaning. To clarify methodological differences of various computer-assisted text analysis approaches the article suggests a typology from the perspective of a qualitative researcher. This typology shows compatibilities between manual qualitative data analysis methods and computational, rather quantitative approaches for large scale mixed method text analysis designs." (author's abstract