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Particular Situation (particular + situation)
Selected AbstractsLocal Participation in Natural Resource Monitoring: a Characterization of ApproachesCONSERVATION BIOLOGY, Issue 1 2009FINN DANIELSEN conservación; evaluación de la biodiversidad; esquemas de monitoreo; intereses locales; manejo de recursos naturales Abstract:,The monitoring of trends in the status of species or habitats is routine in developed countries, where it is funded by the state or large nongovernmental organizations and often involves large numbers of skilled amateur volunteers. Far less monitoring of natural resources takes place in developing countries, where state agencies have small budgets, there are fewer skilled professionals or amateurs, and socioeconomic conditions prevent development of a culture of volunteerism. The resulting lack of knowledge about trends in species and habitats presents a serious challenge for detecting, understanding, and reversing declines in natural resource values. International environmental agreements require signatories undertake systematic monitoring of their natural resources, but no system exists to guide the development and expansion of monitoring schemes. To help develop such a protocol, we suggest a typology of monitoring categories, defined by their degree of local participation, ranging from no local involvement with monitoring undertaken by professional researchers to an entirely local effort with monitoring undertaken by local people. We assessed the strengths and weaknesses of each monitoring category and the potential of each to be sustainable in developed or developing countries. Locally based monitoring is particularly relevant in developing countries, where it can lead to rapid decisions to solve the key threats affecting natural resources, can empower local communities to better manage their resources, and can refine sustainable-use strategies to improve local livelihoods. Nevertheless, we recognize that the accuracy and precision of the monitoring undertaken by local communities in different situations needs further study and field protocols need to be further developed to get the best from the unrealized potential of this approach. A challenge to conservation biologists is to identify and establish the monitoring system most relevant to a particular situation and to develop methods to integrate outputs from across the spectrum of monitoring schemes to produce wider indices of natural resources that capture the strengths of each. Resumen:,El monitoreo de tendencias en el estatus de especies o hábitats es rutinario en los países desarrollados, donde es financiado por el estado o por grandes organizaciones no gubernamentales y a menudo involucra a grandes números de voluntarios amateurs competentes. El monitoreo de recursos naturales es menos intenso en los países en desarrollo, donde las agencias estatales tienen presupuestos pequeños, hay menos profesionales o amateurs competentes y las condiciones socioeconómicas limitan el desarrollo de una cultura de voluntariado. La consecuente falta de conocimientos sobre las tendencias de las especies y los hábitats presenta un serio reto para la detección, entendimiento y reversión de las declinaciones de los recursos naturales. Los tratados ambientales internacionales requieren que los signatarios realicen monitoreos sistemáticos de sus recursos naturales, pero no existe un sistema para guiar el desarrollo y la expansión de los esquemas de monitoreo. Para ayudar al desarrollo de tal protocolo, sugerimos una tipología de categorías de monitoreo, definidas por el nivel de participación local, desde ningún involucramiento local con el monitoreo realizado por investigadores profesionales hasta un esfuerzo completamente local con el monitoreo llevado a cabo por habitantes locales. Evaluamos las fortalezas y debilidades de cada categoría de monitoreo, así como su sustentabilidad potencial en países desarrollados o en desarrollo. El monitoreo basado localmente es particularmente relevante en los países en desarrollo, donde puede llevar a decisiones rápidas para resolver amenazas clave sobre sus recursos naturales, puede facultar a las comunidades locales para un mejor manejo de sus recursos naturales y puede refinar las estrategias de uso sustentable para mejorar la forma de vida local. Sin embargo, reconocemos que la precisión y exactitud del monitoreo llevado a cabo por comunidades locales en situaciones diferentes requiere de mayor estudio y los protocolos de campo requieren de mayor desarrollo para obtener lo mejor del potencial de este método. Un reto para los biólogos de la conservación es la identificación y establecimiento del sistema de monitoreo más relevante para la situación particular, así como el desarrollo de métodos para integrar los resultados de una gama de esquemas de monitoreo para producir índices de recursos naturales más amplios que capturen las fortalezas de cada uno. [source] Elementary processes of soil,water interaction and thresholds in soil surface dynamics: a reviewEARTH SURFACE PROCESSES AND LANDFORMS, Issue 9 2004Richard S. B. Greene Abstract Elementary processes of soil,water interaction and the thresholds to these processes are important to understand as they control a range of phenomena that occur at the soil surface. In particular processes involved with wetting by rainfall that lead to particle breakdown are critical. This breakdown causes soil detachment and crust formation, which are both key elements in erosion. This paper reviews the range of approaches that have been taken in describing the processes associated with the wetting of a soil surface by rainfall. It assembles the studies that emphasize soil physics, soil chemistry, and erosion mechanics in a framework to enable a balanced consideration of important processes and management strategies to control erosion for a particular situation. In particular it discusses the factors associated with the two basic processes of soil structural breakdown, i.e. slaking and dispersion, and how these processes are critical in particle detachment, transport and surface crust formation. Besides the balance between the exchangeable cation composition and electrolyte concentration (measured as the sodium adsorption ratio (SAR) and total cation concentration (TCC) respectively) of the soil, the importance of energy input and soil organic matter content in controlling clay dispersion is emphasized. Based on the balance between these factors, the soil can be in one of three different regions, i.e. a dispersed region, a ,occulated region and one where the resilience of the soil is variable. The implications of each of these regions to soil erosion management are brie,y outlined, as are the critical roles that soil cover levels and organic matter have in controlling erosion. Finally, the relationship between various laboratory measures of aggregate stability, and corresponding ,eld erosion characteristics, is discussed. Copyright © 2004 John Wiley & Sons, Ltd. [source] Toward Responsive Beginning Language CurriculaFOREIGN LANGUAGE ANNALS, Issue 2 2001Larbi Oukada An initial phase, the general education phase, would be comprised predominantly of nonmajors who enroll in beginning language courses with the premeditated purpose of satisfying a language requirement or investing on their own a modest amount of credit hours to explore or study a second language. A subsequent phase, the professional phase, would begin with courses intended for prospective majors and minors who are customarily predisposed to commit enough time to reach the necessary proficiency level required for their professional goal. This curricular distinction serves to underscore the particular situation and the particular mission of the general education phase and to propose a particular curricular model, the Indiana Model. This model provides, within the current and autonomous structure of the American educational system, a mechanism for selecting, prioritizing, and structuring the most responsive objectives for general-education foreign language teaching. [source] Survey of quantitative feedback theory (QFT),INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL, Issue 10 2001Isaac Horowitz QFT is an engineering design theory devoted to the practical design of feedback control systems. The foundation of QFT is that feedback is needed in control only when plant (P), parameter and/or disturbance (D) uncertainties (sets ,,={P}, ,,={D}) exceed the acceptable (A) system performance uncertainty (set ,,={A}). The principal properties of QFT are as follows. (1) The amount of feedback needed is tuned to the (,,, ,,, ,,) sets. If ,, ,exceeds' (,,, ,,), feedback is not needed at all. (2) The simplest modelling is used: (a) command, disturbance and sensor noise inputs, and (b) the available sensing points and the defined outputs. No special controllability test is needed in either linear or non-linear plants. It is inherent in the design procedure. There is no observability problem because uncertainty is included. The number of independent sensors determines the number of independent loop transmissions (Li), the functions which provide the benefits of feedback. (3) The simplest mathematical tools have been found most use ful,primarily frequency response. The uncertainties are expressed as sets in the complex plane. The need for the larger ,,, ,, sets to be squeezed into the smaller ,, set results in bounds on the Li(j,) in the complex plane. In the more complex systems a key problem is the division of the ,feedback burden' among the available Li(j,). Point-by-point frequency synthesis tremendously simplifies this problem. This is also true for highly uncertain non-linear and time-varying plants which are converted into rigorously equivalent linear time invariant plant sets and/or disturbance sets with respect to the acceptable output set ,,. Fixed point theory justifies the equivalence. (4) Design trade-offs are highly transparent in the frequency domain: between design complexity and cost of feedback (primarily bandwidth), sensor noise levels, plant saturation levels, number of sensors needed, relative sizes of ,,, ,, and cost of feedback. The designer sees the trade-offs between these factors as he proceeds and can decide according to their relative importance in his particular situation. QFT design techniques with these properties have been developed step by step for: (i) highly uncertain linear time invariant (LTI) SISO single- and multiple-loop systems, MIMO single-loop matrix and multiple-loop matrix systems; and (ii) non-linear and time-varying SISO and MIMO plants, and to a more limited extent for plants with distributed control inputs and sensors. QFT has also been developed for single- and multiple-loop dithered non-linear (adaptive) systems with LTI plants, and for a special class (FORE) of non-linear compensation. New techniques have been found for handling non-minimum-phase (NMP) MIMO plants, plants with both zeros and poles in the right half-plane and LTI plants with incidental hard non-linearities such as saturation. [source] An Approach to Evaluating the Missing Data Assumptions of the Chain and Post-stratification Equating Methods for the NEAT DesignJOURNAL OF EDUCATIONAL MEASUREMENT, Issue 1 2008Paul W. Holland Two important types of observed score equating (OSE) methods for the non-equivalent groups with Anchor Test (NEAT) design are chain equating (CE) and post-stratification equating (PSE). CE and PSE reflect two distinctly different ways of using the information provided by the anchor test for computing OSE functions. Both types of methods include linear and nonlinear equating functions. In practical situations, it is known that the PSE and CE methods will give different results when the two groups of examinees differ on the anchor test. However, given that both types of methods are justified as OSE methods by making different assumptions about the missing data in the NEAT design, it is difficult to conclude which, if either, of the two is more correct in a particular situation. This study compares the predictions of the PSE and CE assumptions for the missing data using a special data set for which the usually missing data are available. Our results indicate that in an equating setting where the linking function is decidedly non-linear and CE and PSE ought to be different, both sets of predictions are quite similar but those for CE are slightly more accurate. [source] Dilemmas in kinship care: negotiating entitlements in therapyJOURNAL OF FAMILY THERAPY, Issue 4 2007Jeanne Ziminski This paper considers how ideological dilemmas that arise in therapy can be analysed usefully for therapeutic practice. The focus is on the particular situation of kinship care families where family or friends are caring for children without birth parents being present. In the process of family members negotiating the entitlement to care and to be cared for, multiple possibilities about family constructions and authorities throw up many dilemmas for therapists and families. Based on the author's research study with kinship care families, a method for linking discourse theory and therapeutic practice through the use of discourse analysis and positioning theory is explored, with reference to the hierarchical method of the Co-ordinated Management of Meaning model. The paper contends that a consideration of ideological dilemmas in conversation is a core part of any therapeutic encounter, which needs to be recognized and considered in order that those involved in therapy may reflect on several possible futures and so open up the space for future decision-making. [source] Developing best practice in critical care nursing: knowledge, evidence and practiceNURSING IN CRITICAL CARE, Issue 3 2003Paul Fulbrook Summary ,Because the current drive towards evidence-based critical care nursing practice is based firmly within the positivist paradigm, experimentally derived research tends to be regarded as ,high level' evidence, whereas other forms of evidence, for example qualitative research or personal knowing, carry less weight ,This poses something of a problem for nursing, as the type of knowledge nurses use most in their practice is often at the so-called ,soft' end of science. Thus, the ,Catch 22' situation is that the evidence base for nursing practice is considered to be weak ,Furthermore, it is argued in this paper that there are several forms of nursing knowledge, which critical care nurses employ, that are difficult to articulate ,The way forward requires a pragmatic approach to evidence, in which all forms of knowledge are considered equal in abstract but are assigned value according to the context of a particular situation ,It is proposed that this can be achieved by adopting an approach to nursing in which practice development is the driving force for change [source] Robustness of shortfall risk minimising strategies in the binomial modelPROCEEDINGS IN APPLIED MATHEMATICS & MECHANICS, Issue 1 2003Gino Favero In this paper we study the dependence on the loss function of the strategy which minimises the expected shortfall risk when dealing with a financial contingent claim in the particular situation of a binomial model. After having characterised the optimal strategies in the particular cases when the loss function is concave, linear or strictly convex, we analyse how optimal strategies change when we approximate a loss function with a sequence of suitable loss functions. [source] Community as practice: social representations of community and their implications for health promotionJOURNAL OF COMMUNITY & APPLIED SOCIAL PSYCHOLOGY, Issue 2 2007Christine Stephens Abstract Health promotion researchers and practitioners have increasingly turned to community-based approaches. Although there has been much work around the diverse understandings of the term in areas such as community psychology and sociology, I am concerned with how such understandings relate directly to community health research and practice. From a discursive perspective ,community' is seen as a socially constructed representation that is used variously and pragmatically. However, from a wider view, community can be seen as a matter of embodied practice. This paper draws on social representations theory to examine the shifting constructions of ,community', the functional use of those understandings in social life, and the practices that suggest that it is important to attend to their use in particular contexts. Accordingly, the paper argues that meanings of community in the health promotion or public health context must be seen as representations used for specific purposes in particular situations. Furthermore, the broader notion of embodied practice in social life has implications for community participation in health promotion. Copyright © 2007 John Wiley & Sons, Ltd. [source] Psychogenic urinary dysfunction: A uro-neurological assessment,NEUROUROLOGY AND URODYNAMICS, Issue 4 2007Ryuji Sakakibara Abstract Aims The diagnosis of psychogenic urinary dysfunction (PUD) is one of exclusion, particularly from urologic and neurologic causes, and is usually accompanied by more obvious psychologic/ psychiatric features. We here describe patients with PUD who were diagnosed in our uro- neurological laboratory. Materials and Methods We reviewed the digitized records of 2,300 urodynamic cases treated in the past 6 years to identify patients who fulfilled the diagnostic criteria of PUD. All 2,300 patients had completed a urinary questionnaire and undergone both electromyography (EMG)-cystometry and a detailed neurological examination. In addition, pressure-flow analysis, neurophysiology tests including sphincter EMG analysis, and MRI of the brain and spinal cord were performed as applicable. Results PUD was seen in 16 cases (0.7%): 6 men, 10 women, mean age 37 years. Lower urinary tract symptoms (LUTS) included overactive bladder (OAB) alone in 5, difficult urination alone in one, and both in 10. LUTS commonly occurred in particular situations, for example, OAB only while riding the train. Some patients showed extremely infrequent toileting. The urodynamic findings were normal except for increased bladder sensation (50%) for OAB and acontractile detrusor (31%) for difficulty. The final diagnosis was conversion reaction in six followed by anxiety in four. Conclusions PUD patients experienced the situational occurrence of OAB and/or difficult urination and, in some patients, extremely infrequent toileting. The main urodynamic abnormalities were increased bladder sensation and acontractile detrusor. However, even in cases suggestive of PUD, a non-PUD pathology behind the symptoms should be explored. Neurourol. Urodynam. 26:518,524, 2007. © 2007 Wiley-Liss, Inc. [source] The roles of embodiment, emotion and lifeworld for rationality and agency in nursing practiceNURSING PHILOSOPHY, Issue 1 2000Patricia Benner RN Such a practice requires a commitment to meeting and helping the other in ways that liberate and strengthen and avoid imposing the will of the caregiver on the patient. Being good and acting well (phronesis) occur in particular situations. A socially constituted and embodied view of agency, as developed by Merleau-Ponty, provides an alternative to Cartesian and Kantian views of agency. A socially constituted, embodied view of agency is less mechanistic and less deterministic than Descartes' and Kant's radical separation of mind and body, and more responsive and generative than Kant's vision of moral agency as constituted by autonomous choice makers who are uninfluenced by emotion. The role of emotion in perception and judgement is explored in this paper. Distinctions between techne and phronesis are drawn. The role of emotion in market relationships and procedural ethics drawn for the abstract, general other are strategies for exchange of goods and services, but these same market relationships are dependent on well-functioning nonmarket relations of noncalculated giving and receiving. [source] Fuzzy logic controller in a packaging plantPACKAGING TECHNOLOGY AND SCIENCE, Issue 1 2003Marcello Braglia Abstract This paper deals with the analysis of a controller used to synchronize two parallel belt conveyors in a packaging plant. A first conveyor carries the products, while the second delivers the packages. The insertion is obtained by a proper mechanical action. The control system is based on a ,hybrid' fuzzy logic controller, whose parameters are optimized by using an advanced ,operational' genetic algorithm. ,Hybrid' means that a conventional fuzzy logic controller is integrated with a set of special rules needed to solve particular situations characterizing the system. An important constraint is given, since the physical structure of the existing control system is to be kept unchanged. It is shown that the controller efficiently governs the belt conveyors when: (a) the distances between goods and the relative packages become higher than a certain value; (b) the performance of the electrical engine deteriorates during working time; and also (c) interference phenomena occur between consecutive good-package couples. Copyright ©2003 John Wiley & Sons, Ltd. [source] Arterial anastomosis in a pediatric patient receiving a right extended split liver transplant: A case reportPEDIATRIC TRANSPLANTATION, Issue 4 2009Roberto Verzaro Abstract:, We report a case of a pediatric patient who received a right-extended liver transplant. The size of the recipient hepatic artery did not match with the donor right hepatic arterial stump. Moreover, recipient arterial anatomy made the direct anastomosis difficult or at increased risk for complications. The recipient's splenic artery was then mobilized, divided and anastomosed to the donor's right hepatic artery. The spleen was preserved and revascularization through collaterals is demonstrated by Angio CT Scan. Doppler US of the transplanted liver demonstrated good flow through the liver and the patient was discharged with perfect liver function. Splenic artery is perfectly suited for hepatic artery anastomosis. The use of splenic artery is favored in particular situations as in the case of a pediatric recipient receiving a right-extended liver graft with small caliber artery. [source] Presidential Address: Do Financial Institutions Matter?THE JOURNAL OF FINANCE, Issue 4 2001Franklin Allen In standard asset pricing theory, investors are assumed to invest directly in financial markets. The role of financial institutions is ignored. The focus in corporate finance is on agency problems. How do you ensure that managers act in shareholders' interests? There is an inconsistency in assuming that when you give your money to a financial institution there is no agency problem, but when you give it to a firm there is. It is argued that both areas need to take proper account of the role of financial institutions and markets. Appropriate concepts for analyzing particular situations should be used. [source] | ||||||||||||||||