Local central limit theorems, the high-order correlations of rejective sampling and logistic likelihood asymptotics

Let I_1,...,I_n be independent but not necessarily identically distributed Bernoulli random variables, and let X_n=\sum_{j=1}^nI_j. For \nu in a bounded region, a local central limit theorem expansion of P(X_n=EX_n+\nu) is developed to any given degree. By conditioning, this expansion provides information on the high-order correlation structure of dependent, weighted sampling schemes of a population E (a special case of which is simple random sampling), where a set d\subset E is sampled with probability proportional to \prod_{A\in d}x_A, where x_A are positive weights associated with individuals A\in E. These results are used to determine the asymptotic information, and demonstrate the consistency and asymptotic normality of the conditional and unconditional logistic likelihood estimator for unmatched case-control study designs in which sets of controls of the same size are sampled with equal probability.Comment: Published at http://dx.doi.org/10.1214/009053604000000706 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org

Neutral Pion Asymmetries at Intermediate Pseudorapidity in Transversely Polarized p + p Collisions at √ s = 200 GeV

Among the unanswered questions pertaining to nucleon spin physics is the origin of large azimuthal asymmetries (AN ) found in π forward pseudorapidity, η, from high-energy transversely polarized p + p collisions. One possible explanation is offered by twist-3 parton distribution and fragmentation functions. In order to test these and other mechanisms, it is important to study how the asymmetry changes over a range of pion kinematics. The STAR Endcap Electromagnetic Calorimeter (EEMC) is the only RHIC detector with the ability to study AN for π available at intermediate pseudorapidity, 0.8 ≤ η ≤ 2.0. STAR recently published the first measurement of AN for π using data collected in 2006 with collision energy √ STAR collected a high-statistics dataset with transverse beam polarization at √ s = 200 GeV. This offers over a five-fold increase in integrated luminosity relative to the 2006 dataset and a chance to enhance the precision of the previous results. The primary objective of this study is to determine the quality of the data from 2012 and to estimate the final statistical uncertainty.Preliminary results from this study indicate a significant improvement over the 2006 results

High-voltage capacitively coupled contactless conductivity detection for conventional and microchip capillary electrophoresis

This thesis focuses on the optimisation of capacitively coupled contactless conductivity detection for capillary and microchip electrophoresis and its applications in analytical chemistry. First, the effect of high excitation voltages and operation frequencies on the capacitively coupled contactless conductivity detector cell for conventional capillary electrophoresis is evaluated. The detector electrodes comprised two steel tubes cut from hypodermic needles, through which the capillaries were inserted. It is demonstrated that increasing excitation voltages from 25 V pp, to 250 Vpp improves the detection limits by a factor of 10. The high actuator voltage approach was also investigated for contactless conductivity detection on a glass-microchip device with ancm long channel. The detector electrodes formed part of the microchip and were placed on the microchip directly above the microchannel. In a separate project the simplification of on-microchip contactless conductivity detection was accomplished. This was achieved by integrating the detector electrodes on to a chip-holder specifically designed for this purpose. Thus the electrodes were a part of the holder, an improvement of the previous arrangement whereby the detector electrodes were situated on the microdevice. Finally the applications and advantages of the optimised high-voltage capacitively coupled contactless conductivity detection for inorganic and organic analysis were demonstrated. The separation and detection of 14 metal ions was accomplished in less than six minutes. The compatibility of this detector with non-UV transparent, polymer capillaries has been demonstrated. The detection of native amino acids has been evaluated. Part of the work was dedicated to the on-chip analysis of various classes of organic ions. The two immunoproteins human immunoglobulin M (IgM) and immunoglobulin G (IgG), were analysed in their unlabelled state on both capillary and lab-on-chip platforms. All species involved in an immunological interaction between IgM and IgG could be detected. A method for the analysis of selected basic pharmaceutical drug substances was developed. Detection limits comparable to those supplied by direct UV detection were obtained. Main component assays of selected pharmaceutical preparations have been demonstrated

Systemic Barriers to Mental Health Care: A Qualitative Study

This paper explores systemic barriers to accessing mental health care, using Wilber’s Integral Model as a framework. A review of the literature presents qualitative and quantitative accounts of medication access issues and consequences, availability of and timely access to providers, patients not being taken seriously, communication between providers, and suggests ways to reduce these barriers. The original methodology involved conducting qualitative face-to-face interviews with mental health professionals from free and sliding scale clinics in the Twin Cities. Results discuss changes in methodology to qualitative questions posed in an online survey format to licensed clinical social workers in Minnesota. Results identify systemic barriers to mental health care, including: how access issues frequently lead to hospital/emergency room use, a shortage of providers, long waits for appointments, and financial/insurance barriers. The results also include specific suggestions to reducing and removing these barriers. Similarities and differences between the literature review and results are discussed, as well as implications of this research to social work practice and policy. This paper recommends future research be conducted directly with in-patient mental health patients. It also recommends that the shortage of psychiatry be studied in order to discover strategies to increase the availability of and access to this service

Transdisciplinary Creative Ecologies in Contemporary Art within Emergent Processes

This research is composing in the moving with affective speeds and rhythms, instead of unfolding direct and in linear ways. It is important to come across different planes of composition in movement. There are so many planes of voices spinning around in relation. Research-creation seems as forms of relations and an invitation to appreciate the collectivity at the heart of thinking. The many entering-into relation within a differential thought in the making of its own. Emergent properties in non-human interactions, such as those presented in Steven Shaviro ́s Against Self-Organization (2009) and Brain Massumi, are symptomatic of how individualities relate to creative tendencies in relation to the human, non-human dynamism, and emergence as a state or condition. Emergence can be co-joined around the notion of self-organization, “the spontaneous production of a level of reality having its own rules of formation and order of connection” (Massumi, 2002). Self-organization emphasizes on matter-energy which Gilles Deleuze conceives of as the difference or line variation running through all things. Therefore, Deleuze focuses on immanence, how new forms are created, and on the ways in which material bodyings self-organize rather than being forced to do so. Moreover, the research in this dissertation seeks to generate a charged environment where human and non-human emergent processes activate creative encounters that co-create and co-shape each other (Delueze and Guattari, 2003; Stangers, 2017; Manning 2009). This study investigates how complexities and relations expand as an attractor of potentialities, that informs a matrix as movement, and recognizes nodes of the matrix as connections for such movements. My research is transdisciplinary, where experimental work interconnects art, science- zoology, architecture and process philosophy, and conjoins such with non-human emergent processes which are complex systems that activate intermodalities in their doing. These areas of research focus on, thread processes and transdisciplinary art doings.Textiles seen as intensities, transformations, movements, multiplicities of sensations experienced by familiar bodies in resonance with the world in acts of co-composing

Systemic Barriers to Mental Health Care: A Qualitative Study

This paper explores systemic barriers to accessing mental health care, using Wilber’s Integral Model as a framework. A review of the literature presents qualitative and quantitative accounts of medication access issues and consequences, availability of and timely access to providers, patients not being taken seriously, communication between providers, and suggests ways to reduce these barriers. The original methodology involved conducting qualitative face-to-face interviews with mental health professionals from free and sliding scale clinics in the Twin Cities. Results discuss changes in methodology to qualitative questions posed in an online survey format to licensed clinical social workers in Minnesota. Results identify systemic barriers to mental health care, including: how access issues frequently lead to hospital/emergency room use, a shortage of providers, long waits for appointments, and financial/insurance barriers. The results also include specific suggestions to reducing and removing these barriers. Similarities and differences between the literature review and results are discussed, as well as implications of this research to social work practice and policy. This paper recommends future research be conducted directly with in-patient mental health patients. It also recommends that the shortage of psychiatry be studied in order to discover strategies to increase the availability of and access to this service

Counting Containment Partitions

The study of integer partitions has wide applications to mathematics, mathematical physics, and statistical mechanics. We consider the problem of ?nding a generalized ap- proach to counting the partitions of an integer n that contain a partition of a ?xed integer k. We use generating function techniques to count containment partitions and verify exper- imental results using a self-made in program Mathematica. We have found explicit solutions to the problem for general n with k=1, 2, 3, 4, 5, 6. We also discuss open questions and ideas for future work