Predictions for Z-Boson Production in Association with a b-Jet at O(α_{s}

Precise predictions are provided for the production of a Z boson and a b-jet in hadron-hadron collisions within the framework of perturbative QCD, at O(α_{s}^{3}). To obtain these predictions, we perform the first calculation of a hadronic scattering process involving the direct production of a flavored jet at next-to-next-to-leading-order accuracy in massless QCD and extend techniques to also account for the impact of finite heavy-quark mass effects. The predictions are compared to CMS data obtained in pp collisions at a center-of-mass energy of 8 TeV, which are the most precise data from run I of the LHC for this process, where a good description of the data is achieved. To allow this comparison, we have performed an unfolding of the data, which overcomes the long-standing issue that the experimental and theoretical definitions of jet flavor are incompatible.

Establishing gold standards for System-Level Measures: a modified Delphi consensus process.

OBJECTIVE: To establish aspirational 'gold standards' for a suite of System-Level Measures (SLMs) being used by Counties Manukau Health (CM Health), a New Zealand (NZ) District Health Board. DESIGN: This study employed a multi-stage, multi-method modified Delphi consensus process. SETTING: The Delphi consensus process involved virtual (email) communication between participants (Round 1) and a structured face-to-face meeting (Round 2) held in Auckland, NZ. PARTICIPANTS: Participants comprised of health professionals, managers, academics and quality improvement experts with an interest in the use of SLMs. INTERVENTIONS: Participants in the first round received a letter requesting their participation in an anonymous Delphi. The second round involved national and international health system experts taking part in a structured, facilitated face-to-face meeting. Participants reviewed 15 SLMs in total. The SLMs all related to the three domains of the Triple Aim: Population Health, e.g. life expectancy at birth; Patient Experience of Care, e.g. rate of adverse events; and Cost and Productivity, e.g. healthcare expenditure per capita. MAIN OUTCOME MEASURES: For a proposed gold standard to be agreed and established for each SLM. RESULTS: Twelve participants took part in Round 1, with 19 participating in Round 2. The process established agreement on a gold standard for each of the 15 reviewed SLMs. CONCLUSION: We demonstrated that the Delphi consensus process can be used to establish gold standards for a suite of SLMs used by a NZ Health Board (CM Health).

Enhancing evidence use in public health nutrition policymaking: theoretical insights from a New Zealand case study.

BACKGROUND: Enhancing the use of evidence in policymaking is critical to addressing the global burden of nutrition-related disease. Whilst the public health nutrition community has embraced evidence-informed policymaking, their approach of defining relevant evidence and evaluating policy has not brought about major shifts in policymaking. This article uses a public health nutrition case study to refine a novel theory-informed framework for enhancing the use of evidence in government public health nutrition policymaking. Our aim is to contribute insights from evidence-informed policy to the emerging paradigm in public health nutrition policymaking. METHODS: An enquiry framework informed by three groups of theories underpinning evidence-informed policy was used to explore the role of socially mediated processes on the use of evidence. A public health nutrition case study on food marketing to New Zealand children was conducted to refine the framework. Interview data collected from 54 individuals representing four key policy stakeholder groups, policymakers, academics, and food industry and non-government organisations were analysed using deductive and inductive thematic analysis. To enhance theoretical robustness, an alternative hypothesis of political explanations for evidence use was explored alongside the enquiry framework. RESULTS: We found the prevailing political climate influenced the impact of advocacy for evidence inclusive processes at the meta-policy and policymaking process levels and in policy community relationships. Low levels of awareness of the impact of these processes on evidence use and uncoordinated advocacy resulted in the perpetuation of ad hoc policymaking. These findings informed refinements to the enquiry framework. CONCLUSION: Our study highlights the role advocates can play in shifting government public health nutrition policymaking systems towards enhanced use of evidence. Our Advocacy for Evidence Use framework argues for a three-channel approach to advocacy for using evidence in the public interest. The framework provides a means for building a constituency for evidence use in public health nutrition and adds understanding about advocacy to the field of evidence-informed policy. Future research should examine the impact of coordinated advocacy on public health nutrition policymaking systems.

NNLO QCD predictions for Z-boson production in association with a charm jet within the LHCb fiducial region.

We compute next-to-next-to-leading order (NNLO) QCD corrections to neutral vector boson production in association with a charm jet at the LHC. This process is studied in the forward kinematics at s = 13  TeV, which may provide valuable constraints on the intrinsic charm component of the proton. A comparison is performed between fixed order and NLO predictions matched to a parton shower showing mutual compatibility within the respective uncertainties. NNLO corrections typically lead to a reduction of theoretical uncertainties by a factor of two and the perturbative convergence is further improved through the introduction of a theory-inspired constraint on the transverse momentum of the vector boson plus jet system. A comparison between these predictions with data will require an alignment of a flavour-tagging procedure in theory and experiment that is infrared and collinear safe.

A survey of the Hong Kong health sector: past, present and future.

This paper considers the involvement and performance in the health sector of the Hong Kong government prior to and beyond the transfer of sovereignty from Britain to China in July 1997. The paper commences with a historical survey of health services development, which provides insights into why the health system functions in its present haphazard manner. This section culminates by discussing the 1991 establishment of the statutory Hospital Authority which was an attempt to alleviate escalating problems in the administration of hospitals and public health services. Next, the paper surveys the present, discussing, respectively, the roles of government and private service providers, health care outcomes and the contribution of traditional Chinese medicine. Finally, the paper outlines a range of pressing issues which Hong Kong's future policy-makers will need to confront: the organization of the health sector, health financing and the health policy deficit. In the conclusion, it is posited that there is a need for government to formulate a health policy and to clarify its role in the provision of services.

Conceptions and uses of public health ideas by New Zealand government policymakers: report on a five-agency survey.

OBJECTIVES: This article describes New Zealand government policymakers' awareness of, attitudes toward and self-reported use of ideas about the determinants of health. Some comparison with an earlier Canadian study is provided. METHODS: Employees with policymaking and advisory responsibilities in government departments of health, social development, housing, education and finance were surveyed. RESULTS: More than half of the respondents (58%) were familiar with ideas about health determinants. Eighty percent felt that health determinants should be considered in all government policy, but that more practical information on effective policy interventions is needed. Commitment to the idea that the economy should take precedence over reducing health inequalities was low. CONCLUSIONS: There is a demand for literature on health determinants that is sector specific and which provides practical and proven information about effective interventions that influence health.

Revolution or evolution in hospital management?

Hong Kong began to reform its public hospital administration in 1991. The development and implementation of policy, and the negotiation of a new management structure, are discussed below. Health professionals have been contracted as managers, and front-line carers have largely accepted the changes that have occurred. The evolutionary approach to reform which has been adopted may be preferable to the more drastic measures introduced in some other jurisdictions.

The development and implementation of health policy: New Zealand and Hong Kong compared.

Contemporary health sector reform is frequently underpinned by market-influenced public policy "prescriptions." Such prescriptions provide details of what policies ought to look like, but little by way of how they should be implemented. This article compares the experience of New Zealand and Hong Kong, two locations in which recent health reforms were based upon the policy prescription. Where the respective health policies bear similarities, implementation styles differ with interesting consequences. New Zealand's apparent "success" in implementation may ultimately prove counterproductive; it seems more likely that Hong Kong, whose implementation success has been, to date, moderate, will achieve objectives of providing a better public health service.

Big bang and the policy prescription: health care meets the market in New Zealand.

This article discusses events that led up to and the aftermath of New Zealand's radical health sector restructuring of 1993. It suggests that "big bang" policy change facilitated the introduction of a set of market-oriented ideas describable as a policy prescription. In general, the new system performed poorly, in keeping with problems of market failure endemic in health care. The system was subsequently restructured, and elements of the 1993 structures were repackaged through a series of incremental changes. Based on the New Zealand experience, big bang produces change but not necessarily a predictive model, and the policy prescription has been oversold.

Solving the surgical waiting list problem? New Zealand's 'booking system'.

This article discusses the development and implementation of New Zealand's booking system for publicly funded non-urgent surgical and medical procedures. The 'booking system' emerged out of New Zealand's core services debate and the government's desire to remove waiting lists. It was targeted for implementation by mid-1998. However, the booking system remains in an unsatisfactory state and a variety of problems have plagued its introduction. These include a lack of national consistency in the priority access criteria, failure to pilot the system and a shortfall in the levels of funding available to treat the numbers of patients whose priority criteria 'scores' deem them clinically eligible for surgery. The article discusses endeavours to address these problems. In conclusion, based on the New Zealand experience, the article provides lessons for policy-makers interested in introducing surgical booking systems.