120 research outputs found

    The role and importance of long-term fiscal planning

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    There is reason to hope that long-term fiscal planning can still be effective in New Zealand.IntroductionMany countries now require the regular publication of longterm fiscal projections, looking at the potential long-term costs of government spending programmes. In New Zealand, section 26N of the Public Finance Act 1989 (as amended in 2004) requires the Treasury to publish a Statement on the Long-Term Fiscal Position at least every four years. Under the act, such statements must look out at least 40 years. Their contents are the responsibility of the secretary to the Treasury (rather than the minister of finance), and the Treasury is required to use ‘its best professional judgments’ in assessing the fiscal outlook and potential risks.It is also obliged under the act to ensure that ‘all significant assumptions underlying any projections’ are included in the statement. Aside from these parameters, the act is silent on the matters to be covered, giving the Treasury considerable flexibility over the process employed to produce such documents, including the nature and extent of any consultation with external experts, the wider policy community and interested stakeholders. Since the requirement for such statements was introduced in 2004 the Treasury has published three reports. The most recent of these – Affording Our Future – was released in July 2013. Against this backdrop, this article considers:the nature of long-term fiscal planning; why long-term fiscal planning is important; why a legislative requirement for such planning is desirable; whether long-term fiscal planning actually achieves its goals; some of the uncertainties involved in long-term fiscal planning; and the potential for long-term planning in areas beyond fiscal ones

    The Impact of Therapy Balls on In-Seat Behavior for Students with ADHD

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    Students with attention deficit hyperactivity disorder (ADHD) often exhibit hyperactivity-impulsivity, inattention and have difficulty remaining seated. The use of a therapy ball as a seating option may allow students with ADHD to receive the movement they seek during classroom activities when staying seated is desired. The purpose of this study was to determine if the use of therapy balls increased in-seat behavior for 2nd-3rd grade Special Day Class students with an ADHD diagnosis during a 30-minute math activity. The participants were two second graders and one third grader with an ADHD diagnosis. The three participants were chosen because they each exhibited out-of-seat behavior consistently throughout the day (i.e., standing up, wandering the classroom, laying on desk, and going under the desk). This study used a single-case A-B-A-B interrupted time design. The results from this study indicate that therapy balls are an intervention that may increase in-seat behavior for students with ADHD. Therapy balls are a practical intervention that can be an effective way to increase in-seat behavior for students with ADHD

    Phase transitions, domain structure, and pseudosymmetry in La- and Ti-doped BiFeO3

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    The phase transitions and domain structure of the promising PbO-free solid solution series, (0.95-x)BiFeO3-xLaFeO3-0.05La2/3TiO3, were investigated. X ray diffraction(XRD) revealed a transition from a ferroelectricR3c to a PbZrO3-like (Pbam) antiferroelectric (AFE) structure at x = 0.15 followed by a transition to a paraelectric (PE, Pnma) phase at x > 0.30. The ferroelastic/ferroelectric twin domain width decreased to 10–20 nm with increasing x as the AFE phase boundary was approached but coherent antiphase tilted domains were an order of magnitude greater. This domain structure suggested the local symmetry (20 nm) is lower than the average structure (R3c, a−a−a−) of the tilted regions. The PE phase (x = 0.35) exhibited a dominant a−a−c+ tilt system with Pnma symmetry but diffuse reflections at ∼1/4{ooe} positions suggest that short range antipolar order is residual in the PE phase. The complex domain structure and phase assemblage of this system challenge the conventional interpretation of phase transitions based on macroscopic symmetry. Instead, it supports the notion that frustration driven by chemical distributions at the nanometric level influences the local or pseudo-symmetry as well as the domain structure, with XRD giving only the average macroscopic structure

    PRS4 ASSESSMENT OF KNOWLEDGE ABOUT TUBERCULOSIS AMONG TB PATIENTS IN NORTH EAST LIBYA

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    Expression profiling on soybean leaves reveals integration of ER- and osmotic-stress pathways

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    Despite the potential of the endoplasmic reticulum (ER) stress response to accommodate adaptive pathways, its integration with other environmental-induced responses is poorly understood in plants. We have previously demonstrated that the ER-stress sensor binding protein (BiP) from soybean exhibits an unusual response to drought. The members of the soybean BiP gene family are differentially regulated by osmotic stress and soybean BiP confers tolerance to drought. While these results may reflect crosstalk between the osmotic and ER-stress signaling pathways, the lack of mutants, transcriptional response profiles to stresses and genome sequence information of this relevant crop has limited our attempts to identify integrated networks between osmotic and ER stress-induced adaptive responses. As a fundamental step towards this goal, we performed global expression profiling on soybean leaves exposed to polyethylene glycol treatment (osmotic stress) or to ER stress inducers. The up-regulated stress-specific changes unmasked the major branches of the ER-stress response, which include enhancing protein folding and degradation in the ER, as well as specific osmotically regulated changes linked to cellular responses induced by dehydration. However, a small proportion (5.5%) of total up-regulated genes represented a shared response that seemed to integrate the two signaling pathways. These co-regulated genes were considered downstream targets based on similar induction kinetics and a synergistic response to the combination of osmotic- and ER-stress-inducing treatments. Genes in this integrated pathway with the strongest synergistic induction encoded proteins with diverse roles, such as plant-specific development and cell death (DCD) domain-containing proteins, an ubiquitin-associated (UBA) protein homolog and NAC domain-containing proteins. This integrated pathway diverged further from characterized specific branches of ER-stress as downstream targets were inversely regulated by osmotic stress. The present ER-stress- and osmotic-stress-induced transcriptional studies demonstrate a clear predominance of stimulus-specific positive changes over shared responses on soybean leaves. This scenario indicates that polyethylene glycol (PEG)-induced cellular dehydration and ER stress elicited very different up-regulated responses within a 10-h stress treatment regime. In addition to identifying ER-stress and osmotic-stress-specific responses in soybean (Glycine max), our global expression-profiling analyses provided a list of candidate regulatory components, which may integrate the osmotic-stress and ER-stress signaling pathways in plants

    Evaluating lithium diffusion mechanisms in the complex spinel Li2NiGe3O8

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    Lithium-ion diffusion mechanisms in the complex spinel Li2NiGe3O8 have been investigated using solid-state NMR, impedance, and muon spectroscopies. Partial occupancy of migratory interstitial 12d sites is shown to occur at lower temperatures than previously reported. Bulk activation energies for Li+ ion hopping range from 0.43 ± 0.03 eV for powdered samples to 0.53 ± 0.01 eV for samples sintered at 950 °C for 24 h, due to the loss of Li during sintering at elevated temperatures. A lithium diffusion coefficient of 3.89 × 10−12 cm2 s−1 was calculated from muon spectroscopy data for Li2NiGe3O8 at 300 K

    CRP 463: University Area Multi-Modal Access Plan June 2016

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    This study outlines work completed as a part of the CRP 463 senior capstone class outlining a new, comprehensive approach to active transportation on the Cal Poly campus. Led by Dr. William Riggs the project assessed the current conditions, identified opportunities and constraints and then developed conceptual options for a campus active transportation plan. In addition to this process the plan involved completion of a draft Bicycle Friendly University application for the Cal Poly campus (included as a supplemental file) and envisioned conceptual design options for various locations on the campus. Key locations evaluated included the Perimeter Road / University Drive corridor running through campus and the Bella Montana residential campus. The ultimate goal for the plan and these concepts was to expand on proposals from the Cal Poly Masterplan, and provide development templates for future planning and growth that supports multi-modal travel

    Islands Within Islands: Bacterial Phylogenetic Structure and Consortia in Hawaiian Lava Caves and Fumaroles

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    Lava caves, tubes, and fumaroles in Hawai‘i present a range of volcanic, oligotrophic environments from different lava flows and host unexpectedly high levels of bacterial diversity. These features provide an opportunity to study the ecological drivers that structure bacterial community diversity and assemblies in volcanic ecosystems and compare the older, more stable environments of lava tubes, to the more variable and extreme conditions of younger, geothermally active caves and fumaroles. Using 16S rRNA amplicon-based sequencing methods, we investigated the phylogenetic distinctness and diversity and identified microbial interactions and consortia through co-occurrence networks in 70 samples from lava tubes, geothermal lava caves, and fumaroles on the island of Hawai‘i. Our data illustrate that lava caves and geothermal sites harbor unique microbial communities, with very little overlap between caves or sites. We also found that older lava tubes (500–800 yrs old) hosted greater phylogenetic diversity (Faith's PD) than sites that were either geothermally active or younger (<400 yrs old). Geothermally active sites had a greater number of interactions and complexity than lava tubes. Average phylogenetic distinctness, a measure of the phylogenetic relatedness of a community, was higher than would be expected if communities were structured at random. This suggests that bacterial communities of Hawaiian volcanic environments are phylogenetically over-dispersed and that competitive exclusion is the main driver in structuring these communities. This was supported by network analyses that found that taxa (Class level) co-occurred with more distantly related organisms than close relatives, particularly in geothermal sites. Network “hubs” (taxa of potentially higher ecological importance) were not the most abundant taxa in either geothermal sites or lava tubes and were identified as unknown families or genera of the phyla, Chloroflexi and Acidobacteria. These results highlight the need for further study on the ecological role of microbes in caves through targeted culturing methods, metagenomics, and long-read sequence technologies

    Age-associated B cells predict impaired humoral immunity after COVID-19 vaccination in patients receiving immune checkpoint blockade

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    Age-associated B cells (ABC) accumulate with age and in individuals with different immunological disorders, including cancer patients treated with immune checkpoint blockade and those with inborn errors of immunity. Here, we investigate whether ABCs from different conditions are similar and how they impact the longitudinal level of the COVID-19 vaccine response. Single-cell RNA sequencing indicates that ABCs with distinct aetiologies have common transcriptional profiles and can be categorised according to their expression of immune genes, such as the autoimmune regulator (AIRE). Furthermore, higher baseline ABC frequency correlates with decreased levels of antigen-specific memory B cells and reduced neutralising capacity against SARS-CoV-2. ABCs express high levels of the inhibitory FcγRIIB receptor and are distinctive in their ability to bind immune complexes, which could contribute to diminish vaccine responses either directly, or indirectly via enhanced clearance of immune complexed-antigen. Expansion of ABCs may, therefore, serve as a biomarker identifying individuals at risk of suboptimal responses to vaccination

    Introducing v0.5 of the AI Safety Benchmark from MLCommons

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    This paper introduces v0.5 of the AI Safety Benchmark, which has been created by the MLCommons AI Safety Working Group. The AI Safety Benchmark has been designed to assess the safety risks of AI systems that use chat-tuned language models. We introduce a principled approach to specifying and constructing the benchmark, which for v0.5 covers only a single use case (an adult chatting to a general-purpose assistant in English), and a limited set of personas (i.e., typical users, malicious users, and vulnerable users). We created a new taxonomy of 13 hazard categories, of which 7 have tests in the v0.5 benchmark. We plan to release version 1.0 of the AI Safety Benchmark by the end of 2024. The v1.0 benchmark will provide meaningful insights into the safety of AI systems. However, the v0.5 benchmark should not be used to assess the safety of AI systems. We have sought to fully document the limitations, flaws, and challenges of v0.5. This release of v0.5 of the AI Safety Benchmark includes (1) a principled approach to specifying and constructing the benchmark, which comprises use cases, types of systems under test (SUTs), language and context, personas, tests, and test items; (2) a taxonomy of 13 hazard categories with definitions and subcategories; (3) tests for seven of the hazard categories, each comprising a unique set of test items, i.e., prompts. There are 43,090 test items in total, which we created with templates; (4) a grading system for AI systems against the benchmark; (5) an openly available platform, and downloadable tool, called ModelBench that can be used to evaluate the safety of AI systems on the benchmark; (6) an example evaluation report which benchmarks the performance of over a dozen openly available chat-tuned language models; (7) a test specification for the benchmark
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