The Semantics of Logical Connectors: therefore, moreover and in fact

When teaching English words, teachers and textbooks may place more emphasis on 'content' words (nouns, verbs, adjectives, adverbs) than on words that contribute to the 'textual' aspect of English, such as logical connectors. A consequence is that even if a student has some mastery of grammar and the use of 'content' words, they may not be able to produce cohesive texts or construct logical relations. Teaching the meanings of logical connectors is not easy, and the traditional use of synonyms and examples of use are not always helpful. Using synonyms in English or supposedly equivalents in the student's first language is not ideal because the student may end up understanding the word from the perspective of another word or, worse, another language. Using examples of use may be helpful to a certain extent but this method does not spell out the invariant meaning of the logical connector in question and the student is expected to draw their own conclusions on the basis of a few examples. To overcome such pedagogic obstacles, some scholars advocate the use of a maximally clear and minimally ethnocentric metalanguage, the natural semantic metalanguage (NSM), to capture word meaning. In this paper, the NSM methodology, founded by Anna Wierzbicka, is used to capture the meaning of three logical connectors, therefore , moreover and in fact for English language teaching purposes

Comparison of bird community indices for riparian restoration planning and monitoring

The use of a bird community index that characterizes ecosystem integrity is very attractive to conservation planners and habitat managers, particularly in the absence of any single focal species. In riparian areas of the western USA, several attempts at arriving at a community index signifying a functioning riparian bird community have been made previously, mostly resorting to expert opinions or national conservation rankings for species weights. Because extensive local and regional bird monitoring data were available for Nevada, we were able to develop three different indices that were derived empirically, rather than from expert opinion. We formally examined the use of three species weighting schemes in comparison with simple species richness, using different definitions of riparian species assemblage size, for the purpose of predicting community response to changes in vegetation structure from riparian restoration. For the three indices, species were weighted according to the following criteria: (1) the degree of riparian habitat specialization based on regional data, (2) the relative conservation ranking of landbird species, and (3) the degree to which a species is under-represented compared to the regional species pool for riparian areas. To evaluate the usefulness of these indices for habitat restoration planning and monitoring, we modeled them using habitat variables that are expected to respond to riparian restoration efforts, using data from 64 sampling sites in the Walker River Basin in Nevada and California. We found that none of the species-weighting schemes performed any better as an index for evaluating overall habitat condition than using species richness alone as a community index. Based on our findings, the use of a fairly complete list of 30–35 riparian specialists appears to be the best indicator group for predicting the response of bird communities to the restoration of riparian vegetation

Comparison of bird community indices for riparian restoration planning and monitoring

The use of a bird community index that characterizes ecosystem integrity is very attractive to conservation planners and habitat managers, particularly in the absence of any single focal species. In riparian areas of the western USA, several attempts at arriving at a community index signifying a functioning riparian bird community have been made previously, mostly resorting to expert opinions or national conservation rankings for species weights. Because extensive local and regional bird monitoring data were available for Nevada, we were able to develop three different indices that were derived empirically, rather than from expert opinion. We formally examined the use of three species weighting schemes in comparison with simple species richness, using different definitions of riparian species assemblage size, for the purpose of predicting community response to changes in vegetation structure from riparian restoration. For the three indices, species were weighted according to the following criteria: (1) the degree of riparian habitat specialization based on regional data, (2) the relative conservation ranking of landbird species, and (3) the degree to which a species is under-represented compared to the regional species pool for riparian areas. To evaluate the usefulness of these indices for habitat restoration planning and monitoring, we modeled them using habitat variables that are expected to respond to riparian restoration efforts, using data from 64 sampling sites in the Walker River Basin in Nevada and California. We found that none of the species-weighting schemes performed any better as an index for evaluating overall habitat condition than using species richness alone as a community index. Based on our findings, the use of a fairly complete list of 30–35 riparian specialists appears to be the best indicator group for predicting the response of bird communities to the restoration of riparian vegetation

A Proposed High-Power UV Industrial Demonstration Laser at CEBAF

The Laser Processing Consortium, a collaboration of industries, universities, and the Continuous Electron Beam Accelerator Facility (CEBAF) in Newport News, Virginia, has proposed building a demonstration industrial processing laser for surface treatment and micro-machining. The laser is a free-electron laser (FEL) with average power output exceeding 1 kW in the ultraviolet (UV). The design calls for a novel driver accelerator that recovers most of the energy of the exhaust electron beam to produce laser light with good wall-plug efficiency. The laser and accelerator design use technologies that are scalable to much higher power. The authors will describe the critical design issues in the laser such as the stability, power handling, and losses of the optical resonator, and the quality, power, and reliability of the electron beam. They will also describe the calculated laser performance. Finally progress to date on accelerator development and resonator modeling will be reported

The particles of Singapore English: a semantic and cultural interpretation

The Singapore English particles constitute one of the most distinctive features of this cultural dialect. These highly interactive particles play a major role in the integrity and cohesiveness of the Singapore English speech community and offer invaluable insights into Singapore culture. The semantic study of these particles could therefore pave the way for a better understanding of this culture. This study investigates the meanings of several of these particles-three particles la which come in different lexical tones (but are otherwise homophones), the particle wut (commonly spelt as what), and the particle meh-within the Natural Semantic Metalanguage framework. The meaning of each of these particles is stated in the form of a reductive paraphrase couched in simple and universal human concepts so that it can be readily understood by both insiders and cultural outsiders. This study shows that the Singapore English particles are loaded with interactional or pragmatic meanings. It also suggests that the high frequency of use of some particles, including wut and the particles la, is motivated by a cultural norm of interaction

The 'Chineseness' of Singlish

The Palgrave Handbook of Chinese Language StudiesSingapor