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Scientific Approach (scientific + approach)
Selected AbstractsRiver Futures: An Integrative Scientific Approach to River RepairAUSTRAL ECOLOGY, Issue 6 2009ELIZABETH A. DALEY No abstract is available for this article. [source] Analysis of degraded papers by non-destructive spectroscopic techniquesJOURNAL OF RAMAN SPECTROSCOPY, Issue 10 2006Marina Bicchieri Abstract Scientific approach to cultural heritage conservation is very important for cultural reasons and also in order to avoid mistakes in restoration work. Acidity and oxidation play a very important role in paper conservation. Deacidification is a widely used method to remove acidity on aged papers, but if a large amount of carbonyl groups is present in the paper, a strong deacidification can promote an alkali-catalysed ,-alkoxy elimination, leading to the breaking of the anhydroglucose ring in the cellulose chain. In this case, and also in the case of non-acidic but oxidised papers, a reduction treatment is necessary. Because of the high costs of restoration procedures, it is essential to determine whether the reduction treatment is a primary need. In this work we report a study, based on micron-scale space resolved Raman microscopy, infrared reflectance spectroscopy and atomic force microscopy, of differently degraded samples of paper. Non-treated and oxidised samples were investigated, as well as original ancient documents. The aim of this work is to achieve a better understanding of the degradation pattern of historical samples in order to be able to choose the most appropriate restoration treatment using non-destructive spectroscopic techniques. Analysis of the samples demonstrates that degradation processes occur mainly on fibrils and on the fibre wall, as shown also by atomic force microscopy measurements. Copyright © 2006 John Wiley & Sons, Ltd. [source] Addiction research centres and the nurturing of creativity: Centre for Social Research on Alcohol and Drugs (SoRAD), Stockholm University, SwedenADDICTION, Issue 3 2010Kerstin Stenius ABSTRACT The Centre for Social Research on Alcohol and Drugs (SoRAD) was established as a national research centre and department within the Faculty of Social Science at Stockholm University in 1997, following a Government Report and with the aim to strengthen social alcohol and drug research. Initially, core funding came from the Swedish Council for Working Life and Social Research and from the Ministry of Health and Social Affairs for several long-term projects. Today, SoRAD, with 25 senior and junior researchers, has core funding from the university but most of its funding comes from external national and international grants. Research is organized under three themes: consumption, problems and norms, alcohol and drug policy and societal reactions, treatment and recovery processes. SoRADs scientific approach, multi-disciplinarity, a mix of qualitative and quantitative methods and international comparisons was established by the centre's first leader, Robin Room. Regular internal seminars are held and young researchers are encouraged to attend scientific meetings and take part in collaborative projects. SoRAD researchers produce government-funded monthly statistics on alcohol consumption and purchase, and take part in various national government committees, but SoRADs research has no clear political or bureaucratic constraints. One of the future challenges for SoRAD will be the proposed system for university grants allocation, where applied social science will have difficulties competing with basic biomedical research if decisions are based on publication and citation measures. [source] An Approach to Interdisciplinary Training in Postgraduate EducationEUROPEAN JOURNAL OF DENTAL EDUCATION, Issue 2 2006P Brodin Aims, A primary goal for clinical graduate training is to provide the student with the expertise required for specialist treatment in the actual discipline. At the same time there is an increasing need for a broader perspective on specialist care and the students should be aware of the limitations inherent in own specialty. In order to plan treatment in the best interest of the patient, and to be prepared to take part in treatments involving other specialties, the students should be exposed to interdisciplinary cooperation throughout the training. An approach to joint academic and clinical training with the purpose of providing graduate students with a broader perspective on specialist care is described and discussed. Material and methods, During their first year graduate students in the 7 different disciplines complete a joint Core Curriculum consisting of 8 different courses to stimulate a scientific approach to their profession and understanding of basic biologic mechanisms. To create a learning environment focusing on the development of interdisciplinary competence, a joint clinic has been established. Teams of students from different disciplines have been organized in order to establish ,partnership' for the treatment of patients with complex problems. The students also take part in the sessions held by a faculty Team of experts for assessment and treatment planning of referred patients with complex problems. Furthermore, faculty members conduct courses and seminars for students from other disciplines and students also participate in selected parts of the regular program in other disciplines. Results, Formal evaluation has so far been conducted for the Core Curriculum. Most students respond that they are satisfied with the courses, and the curriculum has also been adjusted based on the comments. The students report that treatment of patients in need of interdisciplinary treatment has been facilitated by having ,partners' in other disciplines. Participation in the Team of expert's sessions has been appreciated, and the attendance at interdisciplinary courses and seminars has been good. Conclusions, Based on the experience over the last 5 years, the interdisciplinary aspects of graduate training should be expanded to stimulate a holistic approach also to specialist treatment. [source] Strengthening the scientific approach to clinical practice in the new physician training programmeINTERNAL MEDICINE JOURNAL, Issue 6a 2008I. A. Scott First page of article [source] An analysis of the demarcation problem in science and its application to therapeutic touch theoryINTERNATIONAL JOURNAL OF NURSING PRACTICE, Issue 6 2007David Newbold RN PhD This paper analyses the demarcation problem from the perspective of four philosophers: Popper, Kuhn, Lakatos and Feyerabend. To Popper, pseudoscience uses induction to generate theories, and only performs experiments to seek to verify them. To Popper, falsifiability is what determines the scientific status of a theory. Taking a historical approach, Kuhn observed that scientists did not follow Popper's rule, and might ignore falsifying data, unless overwhelming. To Kuhn, puzzle-solving within a paradigm is science. Lakatos attempted to resolve this debate, by suggesting history shows that science occurs in research programmes, competing according to how progressive they are. The leading idea of a programme could evolve, driven by its heuristic to make predictions that can be supported by evidence. Feyerabend claimed that Lakatos was selective in his examples, and the whole history of science shows there is no universal rule of scientific method, and imposing one on the scientific community impedes progress. These positions are used in turn, to examine the scientific status of therapeutic touch theory. The paper concludes that imposing a single rule of method can impede progress, in the face of multiple epistemologies, and the choice of scientific approach should be a pragmatic one based on the aims of the programme. [source] PHYSICAL CHARACTERISTICS AND ACCEPTABILITY OF EXTRUDED AFRICAN BREADFRUIT-BASED SNACKSJOURNAL OF FOOD QUALITY, Issue 2 2008TITUS U. NWABUEZE ABSTRACT Five-level combinations of African breadfruit, corn and soybean, in the ratios 40:5:55; 55:5:40; 70:5:25; 85:5:10 and 100:0:0%, respectively, were hydrated to 15, 18, 21, 24 and 27% and extruded into snacks at screw speeds of 100, 120, 140, 160 and 180 rpm. Physical characteristics of snacks from blends containing 15 and 18% moisture ranged from thin-smooth to thin-fine-smooth pellets. Those containing 21 to 27% moisture were either thin-smooth or thick-smooth, fine-smooth or rough strands. Feed moisture and feed composition were the most significant process variables influencing physical and sensory characteristics. The optimum process variable combination that had maximum influence on physical and sensory characteristics of snacks was the 70:5:25 feed ratio with 21% moisture and extruded at 140 rpm. This resulted in an overall acceptability score of 8.20 on a 9-point hedonic scale. PRACTICAL APPLICATIONS African breadfruit is widely grown in the high rainforest parts of Nigeria and other African countries, where the seeds are traditionally consumed as porridge meal when cooked with ingredients or as snacks when roasted. There is therefore a need to adopt more efficient extrusion technologies to rapidly and efficiently transform African breadfruit and its blends with corn and soybean into acceptable snacks. Optimizing process variable conditions using response surface analysis to evaluate product physical characteristics and acceptability was the thrust of this study. It is expected to give direction toward a more scientific approach to scaling up operations in African breadfruit seed processing and utilization. [source] Plant neurobiology and green plant intelligence: science, metaphors and nonsenseJOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, Issue 3 2008Paul C Struik Abstract This paper analyses the recent debates on the emerging science of plant neurobiology, which claims that the individual green plant should be considered as an intelligent organism. Plant neurobiology tries to use elements from animal physiology as elegant metaphors to trigger the imagination in solving complex plant physiological elements of signalling, internal and external plant communication and whole-plant organisation. Plant neurobiology proposes useful concepts that stimulate discussions on plant behaviour. To be considered a new science, its added value to existing plant biology needs to be presented and critically evaluated. A general, scientific approach is to follow the so-called ,parsimony principle', which calls for simplest ideas and the least number of assumptions for plausible explanation of scientific phenomena. The extent to which plant neurobiology agrees with or violates this general principle needs to be examined. Nevertheless, innovative ideas on the complex mechanisms of signalling, communication, patterning and organisation in higher plants are badly needed. We present current views on these mechanisms and the specific role of auxins in regulating them. Copyright © 2007 Society of Chemical Industry [source] ETHICS AND OBSERVATION: DEWEY, THOREAU, AND HARMANMETAPHILOSOPHY, Issue 5 2007ANDREW WARD Abstract: In 1929, John Dewey said that "the problem of restoring integration and cooperation between man's beliefs about the world in which he lives and his beliefs about the values and purposes that should direct his conduct is the deepest problem of human life." Using this as its theme, this article begins with an examination of Gilbert Harman's reasons for denying the existence of moral facts. It then presents an alternative account of the relationship between science and ethics, making use of the writings of Dewey and Henry David Thoreau. For both Dewey and Thoreau, the dichotomy between a scientific approach to the world and an ethical approach to the world is a false one. The article explores the reasons for believing that the dichotomy is a false one, agreeing with Thoreau that there "is no exclusively moral law,there is no exclusively physical law." [source] Evidence in Medicine and Evidence-Based MedicinePHILOSOPHY COMPASS (ELECTRONIC), Issue 6 2007John Worrall It is surely obvious that medicine, like any other rational activity, must be based on evidence. The interest is in the details: how exactly are the general principles of the logic of evidence to be applied in medicine? Focussing on the development, and current claims of the ,Evidence-Based Medicine' movement, this article raises a number of difficulties with the rationales that have been supplied in particular for the ,evidence hierarchy' and for the very special role within that hierarchy of randomized controlled trials (and meta-analyses of the results of randomized controlled trials). The point is not at all to question the application of a scientific approach to evidence in medicine, but, on the contrary, to indicate a number of areas where philosophers of science can contribute to a proper implementation of exactly that scientific-evidential approach. [source] Integrating Response to Intervention (RTI) with neuropsychology: A scientific approach to readingPSYCHOLOGY IN THE SCHOOLS, Issue 9 2008Steven G. Feifer This article integrates the fundamental components of both Response to Intervention (RTI) and cognitive neuropsychology when identifying reading disorders in children. Both proponents of RTI and cognitive neuropsychology agree the discrepancy model is not a reliable or valid method to identify learning disorders in school. In addition, both proponents of RTI and cognitive neuropsychology agree that earlier intervention and the use of evidence-based intervention techniques must permeate the thinking behind any educational reform. Lastly, both proponents of RTI and cognitive neuropsychology concur with the National Reading Panel's (2000) five core components of the reading process. Given the similarities between RTI and neuropsychological models of reading, a more integrative assessment model will be introduced to better diagnose and remediate subtypes of reading disorders in children. In summary, it is the author's belief that cognitive neuropsychology will emerge as the leading discipline in forging the inevitable alliance between science and education. © 2008 Wiley Periodicals, Inc. [source] Is a percentage a percentage?THE CLINICAL RESPIRATORY JOURNAL, Issue 1 2010Systematic review of the effectiveness of Scandinavian behavioural modification smoking cessation programmes Abstract Introduction:, Tobacco smoke is the leading preventable cause of death in the world. A total of 50% of all smokers will die from a smoking-related disease with a major impact upon quality of life and health-care costs. Tobacco-controlling policies, including smoking cessation, have increasingly been implemented across European countries. Reported effectiveness data on smoking cessation interventions are important for decision making. Objective:, This study aimed to conduct a literature review on how the effectiveness (quit rates) of behavioural modification smoking cessation programmes (BMSCPs) , counselling, quitlines and quit-and-win contests , were analysed in Denmark, Sweden and Norway. Methods:, A systematic review was carried out by using the search engines Medline (U.S. National Library of Medicine, Bethesda, MD, USA), Cinahl (CINAHL Information Systems, EBSCO Industries, Ipswich, MA, USA), Embase (Elsevier, New York, NY, USA) and the grey literature. Following the Russell Standards, studies were selected according to design, analysis of data [intention-to-treat (ITT)/per protocol (PP)], documentation of abstinence and length of follow-up. Cochrane reviews of pharmacological studies were used as the benchmark. Results:, Although ITT analysis is the standard scientific approach advocated, most studies of BMSCPs reviewed were analysed by using the PP approach and were based on self-reported point prevalence estimates. This resulted in the reported 1-year quit rates between 16%,45% (PP) and 9%,23% (ITT). In contrast, pharmacological studies are conservative, as they are randomised, use ITT analysis and have continuous quit rates with biochemical verification of abstinence. Conclusion:, This literature review reveals that quit rates of smoking cessation interventions are not always comparable. Scandinavian BMSCPs reported optimistic quit rates, confirmed by Cochrane literature review criteria. Care should be exercised when comparing smoking cessation interventions. Please cite this paper as: Poulsen PB, Dollerup J and Møller AM. Is a percentage a percentage? Systematic review of the effectiveness of Scandinavian behavioural modification smoking cessation programmes. The Clinical Respiratory Journal 2009; DOI:10.1111/j.1752-699X.2009.00144.x. [source] Water-soluble vitamins in fish ontogenyAQUACULTURE RESEARCH, Issue 5 2010Rune Waagbø Abstract Studies on vitamin requirement at early stages are difficult and vary in quality, both due to the scientific approach and vitamin analysis. Focus has been on water-soluble vitamins that cause dramatic losses of the offspring in practical farming situations or in wild life, like vitamin C and thiamine deficiencies respectively. Practical solutions including vitamin administration through brood stock and larvae diets have confirmed and corrected the vitamin deficiencies. For the other water-soluble vitamins, the situation is not so obvious. Descriptive studies of folate and vitamin B6 during fish ontogeny have shown a net loss of vitamin during endogenous feeding and a steady transfer of vitamin from the yolk sac into the body compartment, and finally, dramatic increases in body vitamin levels after the start of feeding. The kinetics of mass transfer with ontogeny appears, however, to differ between vitamins. Start of feeding of fish larvae with live or formulated feeds includes several challenges with respect to water-soluble vitamins, including aspects of live feed enrichment and stability, micro-diet leaching, variable feed intakes, immature gastrointestinal tract, variable bioavailability of vitamins and larvae vitamin storage capacity. Consequently, the exact minimum requirements are difficult to estimate and vitamin recommendations need to consider such conditions. [source] A scientific approach to agent selectionAUSTRALIAN JOURNAL OF ENTOMOLOGY, Issue 4 2006Rieks D Van Klinken Abstract, The prioritisation of potential agents on the basis of likely efficacy is an important step in biological control because it can increase the probability of a successful biocontrol program, and reduce risks and costs. In this introductory paper we define success in biological control, review how agent selection has been approached historically, and outline the approach to agent selection that underpins the structure of this special issue on agent selection. Developing criteria by which to judge the success of a biocontrol agent (or program) provides the basis for agent selection decisions. Criteria will depend on the weed, on the ecological and management context in which that weed occurs, and on the negative impacts that biocontrol is seeking to redress. Predicting which potential agents are most likely to be successful poses enormous scientific challenges. ,Rules of thumb', ,scoring systems' and various conceptual and quantitative modelling approaches have been proposed to aid agent selection. However, most attempts have met with limited success due to the diversity and complexity of the systems in question. This special issue presents a series of papers that deconstruct the question of agent choice with the aim of progressively improving the success rate of biological control. Specifically they ask: (i) what potential agents are available and what should we know about them? (ii) what type, timing and degree of damage is required to achieve success? and (iii) which potential agent will reach the necessary density, at the right time, to exert the required damage in the target environment? [source] Josep Lluís Mateo/MAP ArchitectsARCHITECTURAL DESIGN, Issue 1 2009Krunoslav Ivanisin Abstract By focusing on a ,scientific approach' that emphasises the importance of cause and effect, Josep Lluís Mateo/MAP has developed a design for the Camp Nou Stadium in Barcelona that is less about spectacle and more about the people it accommodates. Croatian critic and architect Krunoslav Ivanisin admires the structure for the ,inherent logic of its parts', but also for its prioritisation of communal life. Copyright © 2009 John Wiley & Sons, Ltd. [source] Haematological and respiratory gas changes in horses and mules exercised at altitude (3800 m)EQUINE VETERINARY JOURNAL, Issue S36 2006H. M. GREENE Summary Reason for performing study: Despite the common use of equids as visitors to high altitude mountainous environments, there are a paucity of carefully orchestrated scientific approaches. Further, again as a function of a common perceived advantage of mules over horses in these similar environments there are needs for controlled comparisons between these 2 equids. Objective: To measure haematological and respiratory function in horses and mules at low altitude (225 m), at rest and post exercise. In addition the rate and magnitude of these changes were followed over a 13 day period at high altitude (3800 m) to contrast acclimatisation. Methods: Resting and exercise venous blood samples (1 min post exercise) were obtained from 6 horses and 5 mules housed at 225 m (LA) and then transported to 3800 m (HA) for 13 days. The standardised exercise tests at both LA and HA consisted of trotting (3.0 m/sec) up an incline (6%) for 2 km. Data were analysed with repeated measures ANOVA (comparison of altitude acclimatisation and species) for changes in haematological and respiratory gases. Results: At low altitude, no group differences were found with both resting (P=0.69) and exercising (P=0.74) heart rates. Resting PCV was 8% lower in the mules (P=0.02) and 20% lower during exercise (P=0.02). Horses had significantly higher 2,3-diphosphoglycerate (2,3-DPG)/g Hb at both rest (P=0.003) and exercise (P=0.03). Exercise at HA increased PCV (P=0.03) in both groups, but the increase was attenuated in the mules compared to horses. The increase with 2,3-DPG/g Hb was expressed at HA in both groups (P=0.001) and was also attenuated in mules (P=0.03). Both groups were alkalotic compared to LA (P=0.001), and there were no group differences (P = 0.95). Conclusion: Of the variables measured, the most notable distinction between species was identified for only PCV and 2,3-DPG with both higher in horses, at both LA and HA. While the attenuated response of PCV in mules for the same exercise might argue for an improved adaptation to altitude, the lower 2,3-DPG might not. Other variables during the exercise bout were not different between species. [source] Near real-time spatial management based on habitat predictions for a longline bycatch speciesFISHERIES MANAGEMENT & ECOLOGY, Issue 6 2006A. J. HOBDAY Abstract, Southern bluefin tuna (SBT), Thunnus maccoyii (Castelnau), is a quota-managed species that makes annual winter migrations to the Tasman Sea off south-eastern Australia. During this period it interacts with a year-round tropical tuna longline fishery (Eastern Tuna and Billfish Fishery, ETBF). ETBF managers seek to minimise the bycatch of SBT by commercial ETBF longline fishers with limited or no SBT quota through spatial restrictions. Access to areas where SBT are believed to be present is restricted to fishers holding SBT quota. A temperature-based SBT habitat model was developed to provide managers with an estimate of tuna distribution upon which to base their decisions about placement of management boundaries. Adult SBT temperature preferences were determined using pop-up satellite archival tags. The near real-time predicted location of SBT was determined by matching temperature preferences to satellite sea surface temperature data and vertical temperature data from an oceanographic model. Regular reports detailing the location of temperature-based SBT habitat were produced during the period of the ETBF fishing season when interactions with SBT occur. The SBT habitat model included: (i) predictions based on the current vertical structure of the ocean; (ii) seasonally adjusted temperature preference data for the 60 calendar days centred on the prediction date; and (iii) development of a temperature-based SBT habitat climatology that allowed visualisation of the expected change in the distribution of the SBT habitat zones throughout the season. At the conclusion of the fishing season an automated method for placing management boundaries was compared with the subjective approach used by managers. Applying this automated procedure to the habitat predictions enabled an investigation of the effects of setting management boundaries using old data and updating management boundaries infrequently. Direct comparison with the management boundaries allowed an evaluation of the efficiency and biases produced by this aspect of the fishery management process. Near real-time fishery management continues to be a realistic prospect that new scientific approaches using novel tools can support and advance. [source] Aquatic risks of pesticides, ecological protection goals, and common aims in european union legislationINTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT, Issue 4 2006Theo CM Brock Abstract This discussion paper presents a framework for spatiotemporal differentiation in ecological protection goals to assess the risks of pesticides in surface waters. It also provides a proposal to harmonize the different scientific approaches for ecotoxicological effect assessment adopted in guidance documents that support different legislative directives in the European Union (Water Framework Directive and Uniform Principles). Decision schemes to derive maximum permissible concentrations in surface water are presented. These schemes are based on approaches recommended in regulatory guidance documents and are scientifically underpinned by critical review papers concerning the impact of pesticides on freshwater organisms and communities. Special attention is given to the approaches based on standard test species, species sensitivity distribution curves, and model ecosystem experiments. The decision schemes presented here may play a role in the "acceptability" debate and can be used as options in the process of communication between risk assessors and risk managers as well as between these risk experts and other stakeholders. [source] Embryonic systems implementation with FPGA-based artificial cell network hardware architecturesASIAN JOURNAL OF CONTROL, Issue 2 2010Csaba Szász Abstract The cell-based structure, which makes up the majority of biological organisms, offers the ability to grow with fault-tolerance abilities and self-repair. By adapting these mechanisms and capabilities to nature, scientific approaches have promoted research for understanding related phenomena and associated principles to engine complex novel digital systems and improve their capability. Founded by these observations, the paper is focused on computer-aided modeling, simulation and experimental research of embryonic systems, with the purpose to implement very large scale integrated hardware structures which are able to imitate cells or artificial organism operation mode, with similar robustness and fault-tolerance properties like their biological equivalents from nature. Field Programmable Gate Array (FPGA)-based artificial cell model configuration provided with strongly network communication capabilities is proposed and developed. The presented theoretical and simulation approaches were tested on a laboratory prototype embryonic system (embryonic machine), for study and implementation of basic abilities of living organisms. Copyright © 2010 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society [source] | |||||||||||||||||||||||||