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This study uses a statistical survey over three consecutive years to show how the first-year students of a mid-sized Bring Your Own Device (BYOD) secondary international school perceive the impact of using their own iPad on their learning. The students' perceptions show awareness of the usefulness and challenges associated with using their iPads in school life as well as at home. The students indicate several perceived benefits relating to having instant access to a variety of learning opportunities via the internet. However, they also indicate the challenges of keeping a balanced approach and avoiding overuse of their iPads inside and outside school (e.g., for gaming and social media). The original rationale for implementing the BYOD scheme did not anticipate specific benefits for students' academic outcomes (grades). However, academic performance has continued to be monitored to identify any adverse effects associated with the scheme. Students' overall academic performance has not been adversely affected since the scheme was implemented. [ABSTRACT FROM AUTHOR]

In the autumn of 1917, the British government committed itself to the "Formation of Battalions for the Reception of friendly Alien Jews," an announcement that was followed just 7 weeks later, by the Balfour Declaration. In this article, which builds on the author's previous research into the Jewish Legion, the link between Britain and Zionism, in the context of the First World War, is reconsidered. By taking into account further secondary works, some written since the publication of The Jewish Legion and the First World War in 2004, combined with a re-examination of archival sources, the roles of geopolitics, national interest, and anti-Semitism are assessed for their relative importance. The influence of prominent personalities is also included, especially as personal relationships were exploited in the pursuit of policy, perhaps accounting for the ambiguities of the Balfour Declaration. Historians continue to debate the repercussions of the Declaration, whilst its consequences continue to influence contemporary events and international relations in the Middle East. [ABSTRACT FROM AUTHOR]

Introduction: Sodium hypochlorite is used as a bleaching and disinfecting agent and is commonly found in household bleach. Objective: The objective is to review critically the epidemiology, mechanisms of toxicity, clinical features, diagnosis, and management of hypochlorite poisoning. Methods: PubMed was searched from January 1950 to June 2018 using the terms "Hypochlorite", "Sodium Hypochlorite", "Sodium Oxychloride", "Hypochlorous Acid", "Bleach", "Chlorine Bleach", in combination with the keywords "poisoning", "poison", "toxicity", "ingestion", "adverse effects", "overdose", and "intoxication". In addition, bibliographies of identified articles were screened for additional relevant studies including non-indexed reports. Non-peer-reviewed sources were also included. These searches produced 110 citations which were considered relevant. Epidemiology: There is limited information regarding statistical trends on world-wide poisoning from sodium hypochlorite. In the United States of America, poison control center data have shown that enquiries regarding hypochlorite bleaches have ranged from 43,000 to 46,000 per year over the period 2012–2016. Mechanisms of toxicity: Hypochlorite's potential to cause toxicity is related to its oxidizing capacity and the pH of the solution. Toxicity arises from its corrosive activity upon contact with mucous membranes and skin. Features following ingestion: While small accidental ingestions are very unlikely to cause clinically significant toxicity, large ingestions may cause corrosive gastrointestinal injury and systemic effects, including metabolic acidosis, hypernatremia, and hyperchloremia. Features following dental exposure: Hypochlorite is used extensively by dentists for cleaning root canals and is safe if the solution remains within the root canal. Extrusions into the periapical area can result in severe pain with localized large and diffuse swelling and hemorrhage. Features following skin exposure: Prolonged or extensive exposure may cause skin irritation and damage to the skin or dermal hypersensitivity. Such exposures can result in either immediate or delayed-type skin reactions. High concentration solutions have caused severe chemical skin burns. Features following inhalation: Although there are only limited data, inhalation of hypochlorite alone is likely to lead to no more than mild irritation of the upper airways. Features following ocular exposure: Corneal injuries from ocular exposure are generally mild with burning discomfort and superficial disturbance of the corneal epithelium with recovery within 1 or 2 days. With higher concentration solutions, severe eye irritation can occur. Diagnosis: The diagnosis can typically be made on the basis of a careful history, including details of the specific product used, its hypochlorite concentration, and the amount involved. As hypochlorite bleach produces a characteristic smell of chlorine, this may provide a diagnostic clue. In severe cases, corrosive injury is suggested on presentation because of hypersalivation, difficulty swallowing, retrosternal pain or hematemesis. Management: Symptom-directed supportive care is the mainstay of management. Gastrointestinal decontamination is not beneficial. Local corrosive injury is the major focus of treatment in severe cases. Fiberoptic endoscopy and CT thorax/abdomen are complimentary and have been shown to be useful in corrosive injuries in assessing the severity of injury, risk of mortality and risk of subsequent stricture formation and should be performed as soon as possible after ingestion. Dental periapical extrusion injuries should be left open for some minutes to allow bleeding through the tooth and to limit hematoma development in tissue spaces. Once the bleeding has ceased, the canal can be dressed with non-setting calcium hydroxide and sealed coronally. Conclusions: Accidental ingestion of household bleach is not normally of clinical significance. However, those who ingest a large amount of a dilute formulation or a high concentration preparation can develop severe, and rarely fatal, corrosive injury so prompt supportive care is essential as there is no specific antidote. Treatment primarily consists of symptom-directed supportive care. [ABSTRACT FROM AUTHOR]

Ketamine is a pharmaceutical drug possessing both analgesic and anaesthetic properties. As an anaesthetic, it induces anaesthesia by producing analgesia with a state of altered consciousness while maintaining airway tone, respiratory drive, and hemodynamic stability. At lower doses, it has psychoactive properties and has gained popularity as a recreational drug. To review the epidemiology, mechanisms of toxicity, pharmacokinetics, clinical features, diagnosis and management of ketamine toxicity. Both OVID MEDLINE (January 1950–April 2023) and Web of Science (1900–April 2023) databases were searched using the term "ketamine" in combination with the keywords "pharmacokinetics", "kinetics", "poisoning", "poison", "toxicity", "ingestion", "adverse effects", "overdose", and "intoxication". Furthermore, bibliographies of identified articles were screened for additional relevant studies. These searches produced 5,268 non-duplicate citations; 185 articles (case reports, case series, pharmacokinetic studies, animal studies pertinent to pharmacology, and reviews) were considered relevant. Those excluded were other animal investigations, therapeutic human clinical investigations, commentaries, editorials, cases with no clinical relevance and post-mortem investigations. Following its introduction into medical practice in the early 1970s, ketamine has become a popular recreational drug. Its use has become associated with the dance culture, electronic and dubstep dance events. Ketamine acts primarily as a non-competitive antagonist on the glutamate N-methyl-D-aspartate receptor, causing the loss of responsiveness that is associated with clinical ketamine dissociative anaesthesia. Absorption of ketamine is rapid though the rate of uptake and bioavailability is determined by the route of exposure. Ketamine is metabolized extensively in the liver. Initially, both isomers are metabolized to their major active metabolite, norketamine, by CYP2B6, CYP3A4 and CYP2C9 isoforms. The hydroxylation of the cyclohexan-1-one ring of norketamine to the three positional isomers of hydroxynorketamine occurs by CYP2B6 and CYP2A6. The dehydronorketamine metabolite occurs either by direct dehydrogenation from norketamine via CYP2B6 metabolism or non-enzymatic dehydration of hydroxynorketamine. Norketamine, the dehydronorketamine isomers, and hydroxynorketamine have pharmacological activity. The elimination of ketamine is primarily by the kidneys, though unchanged ketamine accounts for only a small percentage in the urine. The half-life of ketamine in humans is between 1.5 and 5 h. Acute adverse effects following recreational use are diverse and can include impaired consciousness, dizziness, irrational behaviour, hallucinations, abdominal pain and vomiting. Chronic use can result in impaired verbal information processing, cystitis and cholangiopathy. The diagnosis of acute ketamine intoxication is typically made on the basis of the patient's history, clinical features, such as vomiting, sialorrhea, or laryngospasm, along with neuropsychiatric features. Chronic effects of ketamine toxicity can result in cholangiopathy and cystitis, which can be confirmed by endoscopic retrograde cholangiopancreatography and cystoscopy, respectively. Treatment of acute clinical toxicity is predominantly supportive with empiric management of specific adverse effects. Benzodiazepines are recommended as initial treatment to reduce agitation, excess neuromuscular activity and blood pressure. Management of cystitis is multidisciplinary and multi-tiered, following a stepwise approach of pharmacotherapy and surgery. Management of cholangiopathy may require pain management and, where necessary, biliary stenting to alleviate obstructions. Chronic effects of ketamine toxicity are typically reversible, with management focusing on abstinence. Ketamine is a dissociative drug employed predominantly in emergency medicine; it has also become popular as a recreational drug. Its recreational use can result in acute neuropsychiatric effects, whereas chronic use can result in cystitis and cholangiopathy. [ABSTRACT FROM AUTHOR]

Cattle are socioeconomically important animals with frequent and close contact with humans. Due to the size and power of these animals, injury and deaths related to contact with cows and bulls do occur. It is impossible to be certain of the worldwide burden of morbidity and mortality. It is clear however that trauma presents as specific injury patterns, often related to particular activities. Research identifies groups such as dairy farmers, veterinarians and abattoir workers who are at a higher risk of injury. The general public also increase their risk of injury just by being near cattle. The assessment and treatment of injuries due to cattle trauma should follow some clear and well-defined principles. Reduction in the frequency and severity of injury is possible and should be a priority. [ABSTRACT FROM AUTHOR]

The author offers his opinion on socioeconomic segregation in secondary schools. This segregation happens when the children from economically weak background undertake free meal offer in the secondary schools which make them socially outcast from within the school premises. The author through this article offers his views on different indexes which are used to evaluate schools and says that cross-sectional method for comparison is not the correct way to proceed.

In September 1944, the allies undertook the largest ever airborne operation, apparently in an effort to capitalize on the German withdrawal from France and Belgium and end the war in the west by encircling the Ruhr. But what really lay behind this most audacious and daring attempt to finish the war in 1944? Inter-allied rivalry, at the highest levels of military command, and the pursuit of personal ambition, will be discussed to reveal some of the reasons for failure and the post-war bitterness it engendered. [ABSTRACT FROM AUTHOR]

Abstract: Aim: To prospectively study all types and frequency of injuries resulting from direct contact with cattle in an occupational setting. Methods: Prospective evaluation of all injuries due to direct contact with cattle presenting to the Emergency Department (ED) of a rural District General Hospital over a one year period. Results: Injuries related to cattle were a common reason for presentation to the ED. Some clear patterns of injury were noted. Injuries to the upper extremity were particularly common, especially the hand and wrist and were associated with particular activities and mechanisms. Truncal injuries were less common but do have the potential for serious morbidity and mortality as noted in previous studies. Conclusions: Injuries related to direct contact with cattle are common. We noted an as yet unreported common pattern of injury to the hands of workers kicked whilst handling cattle at milking time. We also noted the previously recognized potential for serious injury due to more proximal body trauma whilst working with large animals. Whilst there is some work available pertaining to injury prevention in this industry, our study demonstrates a need for further work to be done to minimize and prevent future injuries. [Copyright &y& Elsevier]

This paper continues our work focused on developing a new socio-economic geography for Australia such that the chosen spatial aggregation of data is based on an analysis of economic behaviour. The underlying hypothesis is that the development of a geographical classification based on underlying economic behaviour will provide new insights into critical issues of regional performance, including unemployment differentials, the impact of industry, infrastructure and changes in local public expenditure on local labour markets. As a precursor to detailed work on the 2006 Census of Population and Housing data, we establish the proof of concept in this paper of the Intramax methodology using 2001 Journey-to-Work data from the Australian Bureau of Statistics (ABS) for the state of New South Wales. The functional regionalisation generated by the Intramax method is then tested using ABS labour force data. We compare 2001 ABS Census of Population and Housing data aggregated by the ABS labour force regions to the same data aggregated using our functional regions. The results demonstrate the potential value of this technique for the development of a new geography. [ABSTRACT FROM AUTHOR]

There is no consensus on the relationship between urban form and commuting behaviour in the international literature. However, there has been limited Australian research on commuting patterns. In this paper, an integrated spatial econometric model which utilises a number of proxies for urban form is employed to analyse the determinants of average commuting distance by occupation across Statistical Local Areas in the Sydney metropolitan area of New South Wales. It is found that, in contrast to a number of US studies, the jobs to residents ratio is an inadequate proxy for urban form and that both the minimum commute and measures of job proximity have superior explanatory power in concert with a range of socioeconomic variables, including occupational prestige, educational attainment and weekly hours of work. [ABSTRACT FROM AUTHOR]

The article provides information on the measurement, pattern and interpretation of ethnic residential segregation in cities. It focuses mainly on the commentaries of M. Poulsen, R. Johnston and J. Forrest which discusses related techniques, fixed typology of areas, and index of concentration. An overview of their commentaries, presenting the typology and the use of indexes in residential segregation is presented. The commentaries conclude that research on the time-series evolution of the spatial residential segregation pattern in a particular region must be founded on a strict understanding of the sources of the change that have occurred. It further states that to achieve a strict understanding, index calculation and typology should be employed cautiously.

The article argues the existence of several tower windmills in 13th and 14th century England. Information on the tower mill which challenged the hegemony of the post-mill in medieval western Europe is presented. It provides an overview of the improvement of the clarification of windmill technology for both post- and tower mills.

Background: When Poisons Information, or Poisons Control Centers (PCC) give directive advice in response to general public calls it is usually assumed that the advice will be followed, but it is difficult to measure the actual compliance of callers to a PCC. Epidemiological data regarding the incidence of poisoning incidents (Toxicovigilance) often utilizes reports of calls to a PCC. Methods: Retrospective review of advice given to all callers to the New Zealand National Poisons Centre (NZNPC) from a defined area for the calendar year 2001. Callers to the NZNPC telephone hotlines who were advised to attend or not to attend the hospital Emergency Department (ED) were subsequently matched with actual ED visits. Results: The compliance rate for those advised to attend the ED was 76.1%, whereas those advised not to attend had a compliance rate of 98.7%. The overall compliance rate was 94.1%. Of the patients presenting to the ED with a potential poisoning, only 10.2% were referred by the PCC. The callers referred by PCC and direct ED visitors appeared to differ in some respects. Conclusions: Compliance with PCC telephone advice is similar to the compliance rates in many other health interventions. Comparisons between populations calling a PCC and those self-presenting to an ED show that PCC data may not reflect the true burden of poisoning to health care systems. [ABSTRACT FROM AUTHOR]

The objective of the study was to assess the use of a computer toxicology database/clinical decision aid by clinical practitioners. The study investigated the sources that Emergency Department (ED) personnel use to obtain toxicology information and performed a quality audit of the current database. A questionnaire survey of ED staff was used in departments with access to the New Zealand Poisons Centre Substance Database (NZSD), a toxicology CD ROM computer database. Outcome measures were reported use of alternative data sources when managing clinical toxicology presentations and the qualities of the NZSD. Computer databases are commonly used for the management of clinical toxicology cases and the toxicology computer database/clinical decision aid studied is well accepted and used in Emergency Medicine practice. The users of the NZSD assessed the usability and quality of the information of the database. [Copyright &y& Elsevier]

In their paper in this issue, Grusky and Charles (1998) make a number of dubious claims about the measurement and interpretation of sex segregation. First, they incorrectly claim that only log-odds measures yield margin-free measures of segregation. Second, the estimation and testing of a limited class of log-linear models does not provide an independent test of the appropriateness of a log-odds ratio index to measure segregation. Their estimation in forms them of the statistically justifiable degree of occupational disaggregation, not whether a log-odds ratio is superior to, say, a linear index in the measurement of segregation. Finally, their index A is beset with problems of interpretation, not withstanding their arguments, and their additional measures, AW and AB, suffer similar problems. Grusky and Charles are, however, correct in arguing that measurement procedures should be margin-free. Further, I concur with the view that the adoption of a single annual summary measure of segregation cannot be justified, because it is premised on the assumption that individual occupations, or groups of occupations, exhibit similar trends in sex segregation. [ABSTRACT FROM AUTHOR]

Empirical studies of gender segregation by occupation must be founded on rigorous measurement procedures. There appears to be a consensus that any index used in the analysis of time-series or international cross-section employment data must be either margin-free or decomposable to yield a margin-free component. On the other hand, Charles and Grusky (1995) advocate the use of multiplicative log models from which a margin-free odds ratio can be derived. In this paper, I contrast the construction and interpretation of the index of dissimilarity and the Karmel-MacLachlan index with the multiplicative modeling of gender segregation and the associated log index. [ABSTRACT FROM AUTHOR]

Over the period 1979-92, the gender and status composition of employment has undergone significant change in Britain, which cannot be attributed merely to cyclical influences. In this paper changes in the pattern of employment by occupation, gender and part-time and full-time status are decomposed to cast some light on three hypotheses (buffer stock, substitution and segregation) which are designed to explain the growth of female employment in Britain over the period 1979-92. The results reveal that women have made some progress in achieving full-time employment positions, after correction for the influence of structural change and the declining full-time share of employment. It is noted, however, that following the labour market legislation of the 1980s full-time employment is not necessarily more secure than part-time. The long run substitution of part-time for full-time employment has benefited the employment of women, even though their share of part-time employment has declined. The analysis informs the debate on the flexible firm at least in respect of numerical flexibility. [ABSTRACT FROM AUTHOR]

In this paper the extent and change of the gender segregation of course completions across fields of study in higher education over the period 1978–94 in Australia is measured. It is argued that similar forms of measurement are appropriate in documenting changing patterns of attainment in higher education by gender, as those which are used for measuring occupational gender segregation. The issues relating to the measurement of gender segregation are briefly explored. Over the period 1978–86, women and men exhibited a more integrated distribution of course completions, as measured by the Karmel and Maclachlan index of (occupational) segregation. Although women continued to raise their share of completions over the period 1987–94, there was little change in the extent of gender segregation in aggregate, and segregation increased in Masters and Bachelors courses. Reference is also made to the impact of changes in the Higher Education Contributory Scheme in 1996 on the gender composition of undergraduate course completions. Policies designed to attract women into atypical Higher Education courses are explored. [ABSTRACT FROM AUTHOR]

Examines occupational segregation by race and gender in the United States from 1983 through 1992. Use of multidimensional approach to analyze trends in segregation; Fast integration of black males and females; Slow integration of Hispanics; Pro-cyclical rate of integration of white-collar occupations compared to blue-collar occupations.

Investigates the desirable properties of a multidimensional index of occupational segregation by gender and race in United States. Measurement of occupational segregation; Important sources of economic inequality between different gender and race groups; Use of integrated and coherent numerical approach; Multidimensional segregation indexes.

Summary: Introduction:: The New Zealand National Poisons Centre has developed an extensive clinical poisons information database, TOXINZ. This resource was originally provided on a CD-Rom, and in 2002 made accessible solely via the Internet (www.toxinz.com). It was unknown whether users would prefer the CD-Rom or Internet version to access the same information. Methods:: In September 2003 a total of 100 questionnaires were mailed to the emergency departments of 15 hospitals to be answered by medical and nursing staff utilizing the Internet version of TOXINZ. The results were then compared with a nearly identical questionnaire conducted in the same way in the same hospitals when only the CD-Rom database version was available. Results:: There was a 79% response rate with both medical and nursing staff rating the poisons management recommendations highly when accessed both on CD-Rom and Internet. Statistically significant differences (p <0.05, Mann–Whitney U-test) identified the Internet accessed database as: supplying better visual aids, being more repetitive, harder to search, and more difficult to print. Conclusion:: Those developing Internet accessible databases for a healthcare environment are encouraged to incorporate robust search functionality, mobility solutions, and an ability to integrate with other healthcare applications. [Copyright &y& Elsevier]

This article considers the origins, application and implication of work for unemployment benefit programs in Australia. Such programs have evolved in Canada, USA, Britain, Australia, and New Zealand over the past decade. The reasons for the development of such programs and the nature of the programs in Australia are outlined. The schemes operating in Australia are then critically examined in terms of a range of criteria including human rights and their ability to generate successful transitions into full-time employment. There are wider labour market issues to explore. Namely whether workfare programs are purely a means of enforcing reciprocal obligations upon the unemployed or whether they do generate market skills that improve the chances of transition from unemployment into employment. In this context the nature, access, duration and post-program experience of the workfare programs in Australia will be explored. (C) 2000 Elsevier Science Inc. All rights reserved. [ABSTRACT FROM AUTHOR]