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Search Results: 1 - 10 of 191682 matches for " D.;Kemp "
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Photosynthetic Water Use Efficiency of Heritage and Modern Potatoes under Limited and Unlimited Water Environments  [PDF]
Isaac R. Fandika, Peter D. Kemp, James P. Millner, Dave Horne
Agricultural Sciences (AS) , 2014, DOI: 10.4236/as.2014.514161
Abstract: Photosynthetic capacity for heritage (Taewa) and modern potato cultivars were compared at different water and nitrogenregimes in the glasshouse and field. The glasshouse was 2*2*4 factorial design with two irrigation: 100% ET and 60% ET; two applied N: 50 kg N ha-1 and 200 kg N ha-1, two Taewa (Moe Moe, Tutaekuri) and two modern potatoes (Moonlight, Agria). The 2009/2010 field experiment was a split-plot, with irrigation and rain-fed regimes as the main treatments: four potatoes above were sub-treatments. The 2010/2011 field experiment was a split-split-plot, with three water regimes as the main treatments: three cultivars (Moe Moe, Tutaekuri, and Agria) were subplots; two N rates were sub-sub-treatments. Gaseous exchange was measured by CIRAS-2 at different days from emergence. Leaf water potential was measured using pressure chamber method. Taewa achieved high photosynthetic WUE in glasshouse and 2010/2011 experiment by maintaining high An, low gs and low Ci compared to modern cultivars (p < 0.0001). The An, gs and T increased with irrigation and N increase while decreasing Ci (p < 0.01). Water stress significantly increased VPD resulting in low An and photosynthetic WUE in Moonlight in the glasshouse. The leaf water potential for Taewa was very tolerant while modern potatoes were weakened by water stress. The study indicated that Taewa can be scheduled at partial irrigation without more detrimental effects on photosynthetic capacity while modern potatoes need full irrigation to avoid detrimental effects on photosynthetic capacity.
Coupling superconducting flux qubits at optimal point via dynamic decoupling with the quantum bus
Y. D. Wang,A. Kemp,K. Semba
Physics , 2008, DOI: 10.1103/PhysRevB.79.024502
Abstract: We propose a scheme with dc-control of finite bandwidth to implement two-qubit gate for superconducting flux qubits at the optimal point. We provide a detailed non-perturbative analysis on the dynamic evolution of the qubits interacting with a common quantum bus. An effective qubit-qubit coupling is induced while decoupling the quantum bus with proposed pulse sequences. The two-qubit gate is insensitive to the initial state of the quantum bus and applicable to non-perturbative coupling regime which enables rapid two-qubit operation. This scheme can be scaled up to multi-qubit coupling.
Malawi\'s Health SWAp: Bringing essential services closer to the poor?
D Gwatkin, E Kataika, I Cardinal, J Kemp
Malawi Medical Journal , 2006,
Abstract: The Government of Malawi has committed itself to reaching the poor with effective health services. The Government agreed to implement ‘The Essential Health Package\', re-affirmed its\' commitment to provide essential health services free of charge and undertook to monitor the new health Sector Wide Approach on its performance in reaching the poor. In August 2005, five papers were commissioned by the Equity and Access Sub-group of the Ministry of Health Monitoring and Evaluation Technical Working Group. The overarching recommendation arising from these analyses is the need to bring essential services much closer to the poor– not only in geographical proximity, but also affordability, cultural acceptability, and epidemiological relevance. The call is not to change policy, but rather to ensure its more energetic and effective implementation. Malawi Medical Journal Vol. 18 (1) 2006: pp. 1-4
Using Matching Methods to Link Social and Physical Analyses for Sustainability Planning
Eric J. Kemp-Benedict,Sukaina Bharwani,Michael D. Fischer
Ecology and Society , 2010,
Abstract: Sustainability planning requires an understanding of social and physical systems and their interactions. However, there is a mismatch between the methods of the social sciences and those of the natural sciences. Although there have been numerous attempts to adapt the methods of the natural sciences for use in the social sciences, the results are usually unsatisfactory. Key features of societies such as institutions and power relationships, and of individuals such as the rich symbolic systems by which individuals transmit knowledge, do not lend themselves to the standard analytical methods of the natural sciences. We argue that rather than transfer the methods of one discipline to the other, an appropriate goal can be to seek "matching methods" that work at the boundary between the social and natural sciences. We discuss how knowledge elicitation tools (KnETs) can be used to develop matching methods. An explicit example is provided by combining a KnETs-derived decision tree with a physical water allocation model that was built using the scenario-based Water Evaluation and Planning (WEAP) software. We conclude that, through a relatively weak link, the social and physical domains can be effectively combined for integrated planning using matching methods, thereby permitting a more holistic approach to sustainable resource planning.
Adverse Selection? A Multi-Dimensional Profile of People Dispensed Opioid Analgesics for Persistent Non-Cancer Pain
Kris D. Rogers, Anna Kemp, Andrew J. McLachlan, Fiona Blyth
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0080095
Abstract: Objectives This study investigates utilisation patterns for prescription opioid analgesics in the Australian community and how these are associated with a framework of individual-level factors related to healthcare use. Methods Self-reported demographic and health information from participants in the 45 and Up Study cohort were linked to pharmaceutical claims from 2006–2009. Participants comprised 19,816 people with ≥1 opioid analgesic dispensing in the 12-months after recruitment to the cohort and 79,882 people not dispensed opioid analgesics. All participants were aged ≥45 years, were social security pharmaceutical beneficiaries, with no history of cancer. People dispensed opioid analgesics were classified as having acute (dispensing period <90 days), episodic (≥90 days and <3 ‘authority’ prescriptions for increased quantity supply) or long-term treatment (≥90 days and ≥3 authority prescriptions). Results Of participants dispensed opioid analgesic 52% received acute treatment, 25% episodic treatment and 23% long-term treatment. People dispensed opioid analgesics long-term had an average of 14.9 opioid analgesic prescriptions/year from 2.0 doctors compared with 1.5 prescriptions from 1.1 doctors for people receiving acute treatment. People dispensed opioid analgesics reported more need-related factors such as poorer physical functioning and higher psychological distress. Long-term users were more likely to have access-related factors such as low-income and living outside major cities. After simultaneous adjustment, association with predisposing health factors and access diminished, but indicators of need such as osteoarthritis treatment, paracetamol use, and poor physical function were the strongest predictors for all opioid analgesic users. Conclusions People dispensed opioid analgesics were in poorer health, reported higher levels of distress and poorer functioning than people not receiving opioid analgesics. Varying dispensing profiles were evident among people dispensed opioid analgesics for persistent pain, with those receiving episodic and long-term treatment dispensed the strongest opioid analgesics. The findings highlight the broad range of factors associated with longer term opioid analgesics use.
Manipulation in Clutter with Whole-Arm Tactile Sensing
Advait Jain,Marc D. Killpack,Aaron Edsinger,Charles C. Kemp
Computer Science , 2013, DOI: 10.1177/0278364912471865
Abstract: We begin this paper by presenting our approach to robot manipulation, which emphasizes the benefits of making contact with the world across the entire manipulator. We assume that low contact forces are benign, and focus on the development of robots that can control their contact forces during goal-directed motion. Inspired by biology, we assume that the robot has low-stiffness actuation at its joints, and tactile sensing across the entire surface of its manipulator. We then describe a novel controller that exploits these assumptions. The controller only requires haptic sensing and does not need an explicit model of the environment prior to contact. It also handles multiple contacts across the surface of the manipulator. The controller uses model predictive control (MPC) with a time horizon of length one, and a linear quasi-static mechanical model that it constructs at each time step. We show that this controller enables both real and simulated robots to reach goal locations in high clutter with low contact forces. Our experiments include tests using a real robot with a novel tactile sensor array on its forearm reaching into simulated foliage and a cinder block. In our experiments, robots made contact across their entire arms while pushing aside movable objects, deforming compliant objects, and perceiving the world.
Pun??o Aspirativa por Agulha Fina Orientada por Ultra-Sonografia em Les?es N?o-palpáveis
Kemp, Cláudio;Elias, Simone;Borrelli, Karen;Garcia y Narvaiza, Débora;Kemp, Carla G. M.;Schor, Ana Paula;
Revista Brasileira de Ginecologia e Obstetrícia , 2001, DOI: 10.1590/S0100-72032001000500008
Abstract: purpose: to determine the relationship between fine needle aspiration cytology guided by ultrasound of nonpalpable breast lesions (cystic or solid masses) with the ultrasound and histopathological features of the biopsy lesions. methods: a total of 617 nonpalpable lesions were analyzed by ultrasound. fine needle aspiration cytology was guided by ultrasonography and the cysts were distinguished from the solid masses by comparing the biopsies. the cytologic results were compared with the histological results in the case surgical biopsy was carried out. results: of the 617 nonpalpable lesions 471 were cysts (451 simple cysts with 100% negative cytology and 20 cases were considered complex cysts; 3 (15%) of these had a positive or suspected cytology and in 2 cases malignancy was confirmed. there were 105 solid masses, 63 of them with negative cytology. fifty-nine cases had a negative biopsy, and 4 cases (0.3%) were false-negative but all of them presented disagreement between the cytological and image features; in 14 cases (13%) there was a suspected cytology and in 5 of them carcinoma was confirmed; in 14 cases (13%), the samples were insufficient, 1 case was carcinoma and in 51 cases, a triple diagnosis was concordant and the lesions were followed-up. conclusion: cytological analysis of simple cysts is not required, but when they are complex, cytological analysis is mandatery. in the case of nonpalpable solid masses, cytology must be correlated with ultrasound and mammography features. if the results are discordant, the lesion should be followed-up.
Corporate Character Formation and CSR: The Function of Habit and Practice in the Mining Industry  [PDF]
John R. Owen, Deanna Kemp
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.45030
Abstract:

The mining industry provides a rich context through which to engage the practical and ethical limits of Corporate Social Responsibility (CSR). Recent debates in organizational ethics have drawn attention to institutional constraints which inhibit awareness raising and ethical practice within corporate settings. During the last decade, the mining industry has come under increasing pressure to improve its environmental, social and ethical performance. In an effort to respond to these more ethically-orientated external expectations, the mining industry has developed a range of internal regulatory mechanisms and process, which can be applied individually or in conjunction with other companies and organizations. This combination of internal and external drivers indicates a growing imperative for mining companies to ground CSR principles in their day-to-day operating practices. The challenge is to avoid organizational rules and procedures for CSR that lack depth and meaning and which fail to result in the wise and courageous use of personal agency. Instead mining companies must work to establish appropriate mechanisms that will see ethical norms adopted as organizational principles that guide, and result in, improved corporate conduct. Using the Aristotelean notion of “character formation”, the authors offer practical considerations for how this might occur in the mining industry.

Temporal responses of coastal hypoxia to nutrient loading and physical controls
W. M. Kemp, J. M. Testa, D. J. Conley, D. Gilbert,J. D. Hagy
Biogeosciences (BG) & Discussions (BGD) , 2009,
Abstract: The incidence and intensity of hypoxic waters in coastal aquatic ecosystems has been expanding in recent decades coincident with eutrophication of the coastal zone. Worldwide, there is strong interest in reducing the size and duration of hypoxia in coastal waters, because hypoxia causes negative effects for many organisms and ecosystem processes. Although strategies to reduce hypoxia by decreasing nutrient loading are predicated on the assumption that this action would reverse eutrophication, recent analyses of historical data from European and North American coastal systems suggest little evidence for simple linear response trajectories. We review published parallel time-series data on hypoxia and loading rates for inorganic nutrients and labile organic matter to analyze trajectories of oxygen (O2) response to nutrient loading. We also assess existing knowledge of physical and ecological factors regulating O2 in coastal marine waters to facilitate analysis of hypoxia responses to reductions in nutrient (and/or organic matter) inputs. Of the 24 systems identified where concurrent time series of loading and O2 were available, half displayed relatively clear and direct recoveries following remediation. We explored in detail 5 well-studied systems that have exhibited complex, non-linear responses to variations in loading, including apparent "regime shifts". A summary of these analyses suggests that O2 conditions improved rapidly and linearly in systems where remediation focused on organic inputs from sewage treatment plants, which were the primary drivers of hypoxia. In larger more open systems where diffuse nutrient loads are more important in fueling O2 depletion and where climatic influences are pronounced, responses to remediation tended to follow non-linear trends that may include hysteresis and time-lags. Improved understanding of hypoxia remediation requires that future studies use comparative approaches and consider multiple regulating factors. These analyses should consider: (1) the dominant temporal scales of the hypoxia, (2) the relative contributions of inorganic and organic nutrients, (3) the influence of shifts in climatic and oceanographic processes, and (4) the roles of feedback interactions whereby O2-sensitive biogeochemistry, trophic interactions, and habitat conditions influence the nutrient and algal dynamics that regulate O2 levels.
Notes Towards a Phenomenological Reading of Lacan
Ryan Kemp
Indo-Pacific Journal of Phenomenology , 2006,
Abstract: Phenomenological psychotherapy, while critiquing psychoanalytic theories, has always sought to draw on and be inspired by these (and other) approaches. To read psychoanalysis through the lens of existential-phenomenology opens, deepens and perhaps even rehabilitates this body of work. In this paper, the work of the French psychoanalyst Jacques Lacan is explored through a phenomenological reading of his early work. Aspects of his developmental theory, as well as certain of his theoretical innovations, are related to psychopathology and treatment and are explored and understood in phenomenological terms. Emphasis is placed on psychotherapeutic experience and understandings. The paper argues that there is much of value in Lacan’s work and that it is more existentially rich than is often acknowledged. Indo-Pacific Journal of Phenomenology, Volume 6, Edition 1 May 2006
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