Acoustic Correlates of Word Stress as A Cue to Accent Strength

Due to the clear interference of their mother tongue prosody, many Czech learners produce their English with a conspicuous foreign accent. The goal of the present study is to investigate the acoustic cues that differentiate stressed and unstressed syllabic nuclei and identify individual details concerning their contribution to the specific sound of Czech English. Speech production of sixteen female non-professional Czech and British speakers was analysed with the sounds segmented on a word and phone level and with both canonical and actual stress positions manually marked. Prior to analyses the strength of the foreign accent was assessed in a perception test. Subsequently, stressed and unstressed vowels were measured with respect to their duration, amplitude, fundamental frequency and spectral slope. Our results show that, in general, Czech speakers use much less acoustic marking of stress than the British subjects. The difference is most prominent in the domains of fundamental frequency and amplitude. The Czech speakers also deviate from the canonical placement of stress, shifting it frequently to the first syllable. On the other hand, they seem to approximate the needed durational difference quite successfully. These outcomes support the concept of language interference since they correspond with the existing linguistic knowledge about Czech and English word stress. The study adds specific details concerning the extent of this interference in four acoustic dimensions

Collective Aspects of Mitigating Interactions Between Large Carnivores and Humans

Understanding how to coexist with wildlife is of critical importance for successful conservation, particularly for large carnivores, who pose risks to human safety, livestock, and game species. In Montana (USA), black and grizzly bears occur across much of the western half of the state. In particular, grizzly bears are protected by the Endangered Species Act and their populations and ranges are expanding, resulting in increased overlap between humans and bears. Interactions with bears can be mitigated when landowners take certain actions to secure bear attractants – such as using bear resistant garbage cans and feed storage, using electric fences, removing livestock carcasses, and taking down bird feeders in the spring and fall. Few studies have examined what drives uptake of these actions, but factors include perceived risks and benefits and personal experience at the individual level. This research aims to understand how individual and collective aspects drive uptake of actions to secure bear attractants. We administered a mail-back questionnaire to Montana landowners and used the collective interest model to determine the relative effects of collective and individual factors in influencing whether landowners secure bear attractants. We developed logistic regression models for each behavior. Collective aspects that drove behavior included social norms (i.e., what individuals think they should do and what others are doing) and network centrality (i.e., how much social influence an individual has). This research suggests that outreach campaigns that only highlight the risks of large carnivores could be substantially improved by describing the collective aspects of mitigation

Analytical decisions in intonation research and the role of representations: Lessons from Romani

This paper presents an analysis of the intonational system of Greek Thrace Romani. The analysis serves to highlight the difficulties that spontaneous fieldwork data pose for traditional methods of intonational research largely developed for use with controlled speech elicited in the laboratory or under laboratory-like conditions from educated speakers of standardized languages. It leads to proposing a set of principles and procedures which can help deal with the variability inherent in spontaneous data; these principles and procedures apply particularly to data from less homogeneous speech communities but are relevant for the intonation analysis of any linguistic system. This approach relies on the understanding that autosegmental-metrical representations of intonation are phonological representations, not means of faithfully depicting pitch contours per se. It follows that representations should capture what is contrastive in the intonational system under analysis. In turn, this entails that new categories are posited, taking the meaning of tonal events into account and after due consideration of all legitimate sources of phonetic variation. It is argued that following this procedure allows for more robust analyses and is particularly advantageous when data are highly variable. This view is discussed in light of the analysis of Greek Thrace Romani, and in combination with recent proposals for greater uniformity and phonetic transparency in intonational representations, traits which are said to lead to greater insights in typological and cross-varietal research. It is shown that these goals are not better served by a level of broad phonetic transcription which encodes an arbitrary selection of phonetic variants

Inhibition or knock out of Inducible nitric oxide synthase result in resistance to bleomycin-induced lung injury

BACKGROUND: In the present study, by comparing the responses in wild-type mice (WT) and mice lacking (KO) the inducible (or type 2) nitric oxide synthase (iNOS), we investigated the role played by iNOS in the development of on the lung injury caused by bleomycin administration. When compared to bleomycin-treated iNOSWT mice, iNOSKO mice, which had received bleomycin, exhibited a reduced degree of the (i) lost of body weight, (ii) mortality rate, (iii) infiltration of the lung with polymorphonuclear neutrophils (MPO activity), (iv) edema formation, (v) histological evidence of lung injury, (vi) lung collagen deposition and (vii) lung Transforming Growth Factor beta1 (TGF-β1) expression. METHODS: Mice subjected to intratracheal administration of bleomycin developed a significant lung injury. Immunohistochemical analysis for nitrotyrosine revealed a positive staining in lungs from bleomycin-treated iNOSWT mice. RESULTS: The intensity and degree of nitrotyrosine staining was markedly reduced in tissue section from bleomycin-iNOSKO mice. Treatment of iNOSWT mice with of GW274150, a novel, potent and selective inhibitor of iNOS activity (5 mg/kg i.p.) also significantly attenuated all of the above indicators of lung damage and inflammation. CONCLUSION: Taken together, our results clearly demonstrate that iNOS plays an important role in the lung injury induced by bleomycin in the mice

Collective factors drive individual invasive species control behaviors: evidence from private lands in Montana, USA

Invasive terrestrial plants globally threaten agricultural and natural systems. Prolific dispersal mechanisms enable "weeds" to colonize across ownership boundaries, constituting a collective action problem where effective control requires contributions from multiple actors. Researchers have long recognized the cross-boundary nature of weed control, yet most studies have focused on whether actor-specific characteristics, such as sociodemographics and cognition, influenced individual weed control behaviors. More recent work has begun to explore the drivers of communal control efforts, i.e., cooperatives, group actions. Few studies have empirically investigated how the collective aspects of weed invasions influence individual control behaviors. Here we provide quantitative evidence of a relationship between collective aspects of the weed control problem and landowners' willingness to engage in individual weed control efforts. In a mail-back survey of Montana landowners (n = 1327) we found collective factors, such as injunctive norms and the belief that weeds are a cross-boundary problem, were significantly correlated with willingness to engage in three different weed control behaviors. Each behavior was correlated with a unique suite of collective factors suggesting that successful interventions must be behavior-specific. These results add to a growing body of evidence that the collective nature of invasive species control is critical for understanding human behavioral responses