A Stratal OT Account of Word Stress in the Mehri of Bit Thuwar

In this paper, we provide a synchronic account of word stress in the Modern South Arabian language, Mehri, as spoken by members of the Bit Thuwar tribe. The data is taken from the first author’s own fieldwork working in Central Dhofar with members of the Bit Thuwar sub-tribes–Bit Iqhōr in Rabkut and parts of the mountains that receive the monsoon rains, and Bit Āmawsh in Dhahbun–with reference, where appropriate, to Johnstone (1987). This paper is a significant expansion and a partial revision of the short discussion on word stress in Watson (2012: 34–35). We begin with a brief background to Mehri within Modern South Arabian. We then discuss word stress patterns in Mehri, following Hayes’ (1995) metrical stress theory; here we show that Mehri is a head-first or trochaic language, namely that in (Cv)CvCv(C) forms, stress is placed on the left-most syllable. We show that in contrast to Arabic trochaic dialects, the domain of stress is the stem and the stem with stem-level suffixes rather than the entire prosodic word. The implications for this is that Mehri exhibits an opacity with regard to stress as seen in Arabic dialects in which three consonant clusters receive vowel epenthesis after the left-most consonant, as in: šuft-ha > šufitha ‘she said it f.’. (These are termed vC-dialects in Kiparsky 2003, so called due to the position of the epenthetic vowel in relation to the medial consonant in a sequence of three). By opacity, we mean that word stress is not assigned as would be predicted by the stress algorithm. In contrast to Arabic vC-dialects, however, opacity is due not to the interaction of epenthesis and syncope (cf. Kiparsky 2003), but rather to the lack of visibility of word-level suffixes to stress. In line with van Oostendorp’s (2002) analysis of unstressable suffixes in Dutch, we argue that word-level suffixes are invisible to stress because they are not incorporated into the prosodic word, but rather adjoined to it. The adoption of Kiparsky’s Stratal Optimality Theory approach enables us to capture Mehri stress assignment succinctly: stress is assigned at the stem-level according to weight and position, and suffixation of word-level suffixes can no longer affect stress assignment due to the high ranking of STRESSIDENT (Collie 2007), which requires stress to remain on the stressed syllable of the stem, and the low ranking of *ADJOIN, which mitigates against the adjunction of affixes to the prosodic word. We also show that Mehri exhibits limited lexical stress, and suggest that attempts to account for stress in these cases in terms of a quantity model on the part of many researchers, including the main author of the current paper, has led to the incorrect transcription and interpretation of these elements

Effectiveness of an influenza vaccine programme for care home staff to prevent death, morbidity, and health service use among residents: cluster randomised controlled trial

Objective To determine whether vaccination of care home staff against influenza indirectly protects residents.Design Pair matched cluster randomised controlled trial.Setting Large private chain of UK care homes during the winters of 2003-4 and 2004-5.Participants Nursing home staff (n = 1703) and residents (n = 2604) in 44 care homes (22 intervention homes and 22 matched control homes).Interventions Vaccination offered to staff in intervention homes but not in control homes.Main outcome measures The primary outcome was all cause mortality of residents. Secondary outcomes were influenza-like illness and health service use in residents.Results In 2003-4 vaccine coverage in full time staff was 48.2% (407/884) in intervention homes and 5.9% (51/859) in control homes. In 2004-5 uptake rates were 43.2% (365/844) and 3.5% (28/800). National influenza rates were substaritially below average in 2004-5. In the 2003-4 period of influenza activity significant decreases were found in mortality of residents in intervention homes compared with control homes (rate difference - 5.0 per 100 residents, 95% confidence interval - 7.0 to - 2.0) and in influenza-like illness (P = 0.004), consultations with general practitioners for influenza-like illness (P = 0.008), and admissions to hospital with influenza-like illness (P = 0.009). No significant differences were found in 2004-5 or during periods of no influenza activity in 2003-4.Conclusions Vaccinating care home staff against influenza can prevent deaths, health service use, and influenza-like illness in residents during periods of moderate influenza activity

Sustainability of HSR as a mass transportation mode in terms of efficient use of natural resources

Abstract The global economic system depends on the sustainable use of natural resources some of which are renewable whilst the others are finite and non-renewable. There has been an increasing need to reduce the use of non-renewable resources particularly within the transportation sector, which is the major consumer of fossil fuels and thus responsible for most of the carbon dioxide emissions and pollution worldwide. High-Speed Rail (HSR) can provide a more sustainable and efficient use of energy and land whilst reducing emissions and pollution compared with road transport and other modes of transport. The reported research takes the form of an investigation and critical evaluation of key existing factors that influence the sustainability of HSR in terms of the efficient use of natural resources. From the evidence that has been gathered from different resources and related critical evaluation, conclusions can be made to show that the development of HSR systems will improve the sustainability of transport in general and reduces the amount of non-renewable natural resources used by the transport industry. The secondary data methodology has been used in this research supported by empirical evidences. Most of the data was gathered from the internet including in depth research of HSR in selected countries, available railway statistics and relevant European and Institutional publications. The main findings are that in many cases, HSR can bring a benefit for society by contributing to the reduction of carbon dioxide emissions produced by the transport industry, reduces the consumption of raw materials, and increases the use of sustainable energy. The expected outcomes of this research will contribute to the development and advances of more sustainable HSR systems that can meet the growing demand for travel due to the continuing growth of the world population and the increasing activities related to business, leisure, and social needs

Can competencies at selection predict performance and development needs?

Purpose – The purpose of this paper is to explore the utility of an organisation-wide competency framework, linking competency ratings at selection to later development needs and job performance. Design/methodology/approach – Candidates’ scores at a management selection event were compared to their performance appraisal scores on the same competencies six to 12 months later (n=58). Scores on numeracy and profit and loss tests were also collected at the selection event and related to subsequent performance (n=207) and development needs. Findings – Competency ratings at performance appraisal were significantly lower than at selection interview. Correlations between ratings at interview and at performance appraisal were generally weak, though one (Understanding the Business) showed significant relationships with five of the seven performance appraisal competencies. In addition, competency ratings were related to employee turnover and managerial development needs. Research limitations/implications – Although competencies were clearly defined, inter-rater variations may have occurred which obscure the relationships. However, it is of interest that a single competency at selection (Understanding the Business) seems to have the greatest effect on performance, employment outcome and development needs. Practical implications – A competency framework that is embedded in both selection and performance ratings can provide the organisation with a clearer understanding of what determines managerial success, as well as informing better selection decisions. This study also raises the issue that performance ratings may be influenced more by a manager's ability to understand the business than by any other competencies. Originality/value – The use of a longitudinal design provides unique evidence of the relationship between competency ratings at selection and later performance, employment outcome and development needs

Transcription enhancement of a digitised multi-lingual pamphlet collection: a case study and guide for similar projects

UCL Library Services holds an extensive collection of over 9,000 Jewish pamphlets, many of these extremely rare. Over the past five years, UCL has embarked on a project to widen access to this collection through an extensive programme of cataloguing, conservation and digitisation. With the cataloguing complete and the most fragile items conserved, the focus is now on making these texts available to global audiences via UCL Digital Collections website. The pamphlets were ranked for rarity, significance and fragility and the highest-scoring selected for digitisation. Unique identifiers allocated at the point of cataloguing were used to track individual pamphlets through the stages of the project. This guide details the text-enhancement methods used, highlighting particular issues relating to Hebrew scripts and early-printed texts. Initial attempts to enable images of these pamphlets to be searched digitally relied on the Optical Character Recognition (OCR) embedded within the software used to create the PDF files. Whilst satisfactory for texts chiefly in Roman script, it provided no reliable means to search the extensive corpus of texts in Hebrew. Generous advice offered by the National Library of Israel led to our adoption of ABBYY FineReader software as a means of enhancing the transcriptions embedded within the PDF files. Following image capture, JPEG files were used to create multi-page PDF files of each pamphlet. Pre-processing in ABBYY FineReader consisted of: setting the language and colour mode; detecting page orientation; selecting and refining areas of the text to be read; reading the text to produce a transcription. The resultant files were stored in folders according to language of text. The software highlighted spelling errors and doubtful readings. A verification tool allowed transcribers to correct these as required. However, some erroneous or doubtful readings were nevertheless genuine words and not highlighted; it was therefore essential to proofread the text, particularly for early-printed scripts. Transcribers maintained logs of common errors; additionally, problems with Hebrew vocalisations, cursive and Gothic scripts were noted. During initial quality checks of the transcriptions, many text searches were unsuccessful due to previously unidentified spacings occurring within words. This was generally linked to the font size being too small. Maintaining logs of font sizes used led to the adoption of a minimum of Arial 8 or Times New Roman 10 in transcribed text. The methodology was revised to include the preliminary quality-checking of one page. We concluded that it was difficult to develop a standardised procedure applicable to all texts given the variance in language, script and typography. However, we concluded that the font Arial gave the most successful accuracy ratings for Hebrew script, minimum text size 17, minimum title size 25. ABBYY file preparation took a minimum of 1.5 hours per pamphlet; transcription correction took an average of 10.4 minutes per page; the final quality check took 30 minutes per pamphlet. On average, the work on each pamphlet took a minimum of 6 hours to complete. As a result of the project, average accuracy ratings improved from 60% to 89%, the greatest improvement being for pre-1800 and Hebrew script publications. We are therefore inclined to focus future transcription-enhancement activity on these types of publication for the remainder of our Jewish Pamphlet Collections

Comparison of three microarray probe annotation pipelines: differences in strategies and their effect on downstream analysis

Background - Reliable annotation linking oligonucleotide probes to target genes is essential for functional biological analysis of microarray experiments. We used the IMAD, OligoRAP and sigReannot pipelines to update the annotation for the ARK-Genomics Chicken 20 K array as part of a joined EADGENE/SABRE workshop. In this manuscript we compare their annotation strategies and results. Furthermore, we analyse the effect of differences in updated annotation on functional analysis for an experiment involving Eimeria infected chickens and finally we propose guidelines for optimal annotation strategies. Results - IMAD, OligoRAP and sigReannot update both annotation and estimated target specificity. The 3 pipelines can assign oligos to target specificity categories although with varying degrees of resolution. Target specificity is judged based on the amount and type of oligo versus target-gene alignments (hits), which are determined by filter thresholds that users can adjust based on their experimental conditions. Linking oligos to annotation on the other hand is based on rigid rules, which differ between pipelines. For 52.7% of the oligos from a subset selected for in depth comparison all pipelines linked to one or more Ensembl genes with consensus on 44.0%. In 31.0% of the cases none of the pipelines could assign an Ensembl gene to an oligo and for the remaining 16.3% the coverage differed between pipelines. Differences in updated annotation were mainly due to different thresholds for hybridisation potential filtering of oligo versus target-gene alignments and different policies for expanding annotation using indirect links. The differences in updated annotation packages had a significant effect on GO term enrichment analysis with consensus on only 67.2% of the enriched terms. Conclusion - In addition to flexible thresholds to determine target specificity, annotation tools should provide metadata describing the relationships between oligos and the annotation assigned to them. These relationships can then be used to judge the varying degrees of reliability allowing users to fine-tune the balance between reliability and coverage. This is important as it can have a significant effect on functional microarray analysis as exemplified by the lack of consensus on almost one third of the terms found with GO term enrichment analysis based on updated IMAD, OligoRAP or sigReannot annotatio

GRB 180620A: Evidence for Late-time Energy Injection

The early optical emission of gamma-ray bursts (GRBs) gives an opportunity to understand the central engine and first stages of these events. About 30% of GRBs present flares whose origin is still a subject of discussion. We present optical photometry of GRB 180620A with the COATLI telescope and RATIR instrument. COATLI started to observe from the end of prompt emission at T + 39.3 s and RATIR from T + 121.4 s. We supplement the optical data with the X-ray light curve from Swift/XRT. We observe an optical flare from T + 110 s to T + 550 s, with a temporal index decay α O,decay = 1.32 ± 0.01, and Δt/t = 1.63, which we interpret as the signature of a reverse shock component. After the initial normal decay the light curves show a long plateau from T + 500 s to T + 7800 s in both X-rays and the optical before decaying again after an achromatic jet break at T + 7800 s. Fluctuations are seen during the plateau phase in the optical. Adding to the complexity of GRB afterglows, the plateau phase (typically associated with the coasting phase of the jet) is seen in this object after the "normal" decay phase (associated with the deceleration phase of the jet), and the jet break phase occurs directly after the plateau. We suggest that this sequence of events can be explained by a rapid deceleration of the jet with t d ≲ 40 s due to the high density of the environment (≈100 cm-3) followed by reactivation of the central engine, which causes the flare and powers the plateau phase

Predicting Visibility of Aircraft

Visual detection of aircraft by human observers is an important element of aviation safety. To assess and ensure safety, it would be useful to be able to be able to predict the visibility, to a human observer, of an aircraft of specified size, shape, distance, and coloration. Examples include assuring safe separation among aircraft and between aircraft and unmanned vehicles, design of airport control towers, and efforts to enhance or suppress the visibility of military and rescue vehicles. We have recently developed a simple metric of pattern visibility, the Spatial Standard Observer (SSO). In this report we examine whether the SSO can predict visibility of simulated aircraft images. We constructed a set of aircraft images from three-dimensional computer graphic models, and measured the luminance contrast threshold for each image from three human observers. The data were well predicted by the SSO. Finally, we show how to use the SSO to predict visibility range for aircraft of arbitrary size, shape, distance, and coloration

A conceptual framework for assessing the ecosystem service of waste remediation: In the marine environment

In the marine environment, the ecosystem service of Waste Remediation (WR) enables humans to utilise the natural functioning of ecosystems to process and detoxify a large number of waste products and therefore avoid harmful effects on human wellbeing and the environment. Despite its importance, to date the service has been poorly defined in ecosystem service classifications and rarely valued or quantified. This paper therefore addresses a gap in the literature regarding the application of this key, but poorly documented ecosystem service. Here we present a conceptual framework by which the ecosystem service of WR can be identified, placed into context within current ecosystem classifications and assessed. A working definition of WR in the marine context is provided as is an overview of the different waste types entering the marine environment. Processes influencing the provisioning of WR are categorised according to how they influence the input, cycling/detoxification, sequestration/storage and export of wastes, with operational indicators for these processes discussed. Finally a discussion of the wider significance of the service of WR is given, including how we can maximise the benefits received from it. It is noted that many methods used in the assessment, quantification and valuation of the service are currently hampered due to the benefits of the service often not being tangible assets set in the market and/or due to a lack of information surrounding the processes providing the service. Conclusively this review finds WR to be an under researched but critically important ecosystem service and provides a first attempt at providing operational guidance on the long term sustainable use of WR in marine environments