383 research outputs found

    Influence Tactics Employed by High School Assistant Principals in Attempting to Influence their Principals

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    An important element of success in any managerial position rests in an ability to positively influence superiors. Nowhere in schooling is the need to be able to influence superiors more apparent than in the high school assistant principalship. Despite the similarity in titles, assistant principals are not principals. Their positions do not carry the authority of the principalship, and they-even more than a classroom teacher- are directly dependent upon the principal for job assignments, direction, permission, and support. Success in the assistant principalship requires a positive and mutually influential relationship with the principal. The nature of their work drives assistant principals to practice upward influence. The purpose of this survey study was to (a) identify influence practices employed by high school assistant principals; (b) to assess what impact, if any, gender may have upon tactic selection; (c) to assess what impact, if any, age has upon tactic selection; (d) to assess what impact, if any, the number of assistant principals in a building has upon tactic selection; (e) to assess what impact, if any, experience level has upon tactic selection. An assistant principal’s ability to successfully fulfill the responsibilities of his or her job is, at least in part, tied to the communication line to the principal. This study allows APs to know which upward influence tactics are available and utilized. Performance appraisals may well be tied to an AP’s ability to influence the principal. The perception of whether or not the AP has good communication skills may even be tied to persuasive prowess. This study provides additional knowledge regarding the high school assistant principalship and the work behaviors of those who hold the position. The findings may have implications for pre-service and in-service training for administrators

    Evaluating policy layer security controls for value realisation in secure systems

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    A strategic question for any business is: What value do control frameworks give? The question concerns the costs associated with implementing and maintaining control frameworks compared with the benefits gained. Each control framework contains many controls that may or may not benefit a situation and this research is aimed at testing different selections and combinations of controls to forecast probable impacts on business outcomes. The scope of the research is limited to a representative set of security controls and the lesser question: What are the criteria for selecting the most effective and efficient security control configurations for best business value? We design a decision support tool (DSS), run a pilot study and begin to develop output sets as part of the exploratory research. The conclusion is that in controlled environments the security controls may be optimised to deliver the best business value and that the highest performing sets of controls can be forecasted once the interaction factors are known

    Cross-Subsidies: Government\u27s Hidden Pocketbook

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    Governments can use regulation to pay for public goods out of the pockets of consumers, rather than taxpayers. For example, the Affordable Care Act underwrites care for women and the infirm through higher insurance premium payments by healthy men. Building on a classic article from Richard Posner, we show that these “cross-subsidies” between consumers are a common feature of modern law, ranging from telecommunications to intellectual property to employee benefits. Critics of the ACA, and even some of its supporters, argue that taxes would be a better choice. Taxes are said to be more transparent, and to fit better with the recommendations of public finance economics. We show how these same arguments can be extended to many other contemporary cross-subsidies. We also argue, however, that the critics may well be wrong. Drawing on recent theoretical and empirical advances, we show that cross-subsidies can be more efficient than taxes, especially when they are used to redistribute wealth on grounds other than income, such as the ACA’s transfer from men to women. We then apply our analysis to several key contemporary cross-subsidies, including personal-injury law, patents, class action lawsuits, paid family leave, and of course the ACA

    A Firefly-inspired method for protein structure prediction in lattice models

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    We introduce a Firefly-inspired algorithmic approach for protein structure prediction over two different lattice models in three-dimensional space. In particular, we consider three-dimensional cubic and three-dimensional face-centred-cubic (FCC) lattices. The underlying energy models are the Hydrophobic-Polar (H-P) model, the Miyazawa–Jernigan (M-J) model and a related matrix model. The implementation of our approach is tested on ten H-P benchmark problems of a length of 48 and ten M-J benchmark problems of a length ranging from 48 until 61. The key complexity parameter we investigate is the total number of objective function valuations required to achieve the optimum energy values for the H-P model or competitive results in comparison to published values for the M-J model. For H-P instances and cubic lattices, where data for comparison are available, we obtain an average speed-up over eight instances of 2.1, leaving out two extreme values (otherwise, 8.8). For six M-J instances, data for comparison are available for cubic lattices and runs with a population size of 100, where, a priori, the minimum free energy is a termination criterion. The average speed-up over four instances is 1.2 (leaving out two extreme values, otherwise 1.1), which is achieved for a population size of only eight instances. The present study is a test case with initial results for ad hoc parameter settings, with the aim of justifying future research on larger instances within lattice model settings, eventually leading to the ultimate goal of implementations for off-lattice models

    The HIV-associated tuberculosis epidemic--when will we act?

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    Despite policies, strategies, and guidelines, the epidemic of HIV-associated tuberculosis continues to rage, particularly in southern Africa. We focus our attention on the regions with the greatest burden of disease, especially sub-Saharan Africa, and concentrate on prevention of tuberculosis in people with HIV infection, a challenge that has been greatly neglected. We argue for a much more aggressive approach to early diagnosis and treatment of HIV infection in affected communities, and propose urgent assessment of frequent testing for HIV and early start of antiretroviral treatment (ART). This approach should result in short-term and long-term declines in tuberculosis incidence through individual immune reconstitution and reduced HIV transmission. Implementation of the 3Is policy (intensified tuberculosis case finding, infection control, and isoniazid preventive therapy) for prevention of HIV-associated tuberculosis, combined with earlier start of ART, will reduce the burden of tuberculosis in people with HIV infection and provide a safe clinical environment for delivery of ART. Some progress is being made in provision of HIV care to HIV-infected patients with tuberculosis, but too few receive co-trimoxazole prophylaxis and ART. We make practical recommendations about how to improve this situation. Early HIV diagnosis and treatment, the 3Is, and a comprehensive package of HIV care, in association with directly observed therapy, short-course (DOTS) for tuberculosis, form the basis of prevention and control of HIV-associated tuberculosis. This call to action recommends that both HIV and tuberculosis programmes exhort implementation of strategies that are known to be effective, and test innovative strategies that could work. The continuing HIV-associated tuberculosis epidemic needs bold but responsible action, without which the future will simply mirror the past

    Remote real-time monitoring of subsurface landfill gas migration

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    The cost of monitoring greenhouse gas emissions from landfill sites is of major concern for regulatory authorities. The current monitoring procedure is recognised as labour intensive, requiring agency inspectors to physically travel to perimeter borehole wells in rough terrain and manually measure gas concentration levels with expensive hand-held instrumentation. In this article we present a cost-effective and efficient system for remotely monitoring landfill subsurface migration of methane and carbon dioxide concentration levels. Based purely on an autonomous sensing architecture, the proposed sensing platform was capable of performing complex analytical measurements in situ and successfully communicating the data remotely to a cloud database. A web tool was developed to present the sensed data to relevant stakeholders. We report our experiences in deploying such an approach in the field over a period of approximately 16 months

    Metastatic meningioma: positron emission tomography CT imaging findings

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    The imaging findings of a case of metastasing meningioma are described. The case illustrates a number of rare and interesting features. The patient presented with haemoptysis 22 years after the initial resection of an intracranial meningioma. CT demonstrated heterogeneous masses with avid peripheral enhancement without central enhancement. Blood supply to the larger lesion was partially from small feeding vessels from the inferior pulmonary vein. These findings correlate with a previously published case in which there was avid uptake of fluoro-18-deoxyglucose peripherally with lesser uptake centrally. The diagnosis of metastasing meningioma was confirmed on percutaneous lung tissue biopsy

    Metastatic meningioma: positron emission tomography CT imaging findings

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    The imaging findings of a case of metastasing meningioma are described. The case illustrates a number of rare and interesting features. The patient presented with haemoptysis 22 years after the initial resection of an intracranial meningioma. CT demonstrated heterogeneous masses with avid peripheral enhancement without central enhancement. Blood supply to the larger lesion was partially from small feeding vessels from the inferior pulmonary vein. These findings correlate with a previously published case in which there was avid uptake of fluoro-18-deoxyglucose peripherally with lesser uptake centrally. The diagnosis of metastasing meningioma was confirmed on percutaneous lung tissue biopsy

    Brief scales to assess physical activity and sedentary equipment in the home

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    <p>Abstract</p> <p>Background</p> <p>Sedentary behaviors such as TV viewing are associated with childhood obesity, while physical activity promotes healthy weight. The role of the home environment in shaping these behaviors among youth is poorly understood. The study purpose was to examine the reliability of brief parental proxy-report and adolescent self-report measures of electronic equipment and physical activity equipment in the home and to assess the construct validity of these scales by examining their relationship to physical activity, sedentary behavior, and weight status of children and adolescents.</p> <p>Methods</p> <p>Participants were adolescents (n = 189; mean age = 14.6), parents of adolescents (n = 171; mean age = 45.0), and parents of younger children (n = 116; parents mean age = 39.6; children's mean age = 8.3) who completed two surveys approximately one month apart. Measures included a 21-item electronic equipment scale (to assess sedentary behavior facilitators in the home, in the child or adolescent's bedroom, and portable electronics) and a 14-item home physical activity equipment scale. Home environment factors were examined as correlates of children's and adolescents' physical activity, sedentary behavior, and weight status after adjusting for child age, sex, race/ethnicity, household income, and number of children in the home.</p> <p>Results</p> <p>Most scales had acceptable test-retest reliability (intraclass correlations were .54 - .92). Parent and adolescent reports were correlated. Electronic equipment in adolescents' bedrooms was positively related to sedentary behavior. Activity equipment in the home was inversely associated with television time in adolescents and children, and positively correlated with adolescents' physical activity. Children's BMI z-score was positively associated with having a television in their bedroom.</p> <p>Conclusions</p> <p>The measures of home electronic equipment and activity equipment were similarly reliable when reported by parents and by adolescents. Home environment attributes were related to multiple obesity-related behaviors and to child weight status, supporting the construct validity of these scales.</p
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