scholarly journals Assessment of the Reliability of Different Components of Fuel Measurement Systems Used in Angola

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Henrique Afonso ◽  
José Sebastião Dunge
Keyword(s):  
Weibull Distribution ◽  
Anova Analysis ◽  
Computational Tools ◽  
Measurement Systems ◽  
Maintenance System ◽  
Probability And Statistics ◽  
The Impact ◽  
Selection Of ◽  
Fuel Measurement

The present work aims to assess the reliability of the different fuel measurement systems used at SNLD filling stations. As objectives, it is intended to propose a methodology for selecting the types and models of pumps to be used and when to replace them. The assessment of the risks in the replacement of a pump and the impact on the environment will also be examined. Although the discussion on pumps is not new in Angola, there are no published records on this subject, particularly in the selection of types and models of systems to be used and when to replace, using the different scientific tools. For the analysis of these equipments and their reliability, weibull distribution, ANOVA analysis and computational tools of probability and statistics with excel were used. The analysis by these two methods made it possible to certify the results obtained. A benchmarking was carried out at the filling stations of SNLD, Pumangol and Sonangalp to compare the quality of some services. The results achieved were discussed during the internship held at Petrotec. As a result, the components that have the most impact on the maintenance system of the different pumps, the causes of the faults and their respective costs were identified. The most vulnerable components identified are errors in the display, heating in the engine and malfunction of electrovalves.

scholarly journals Wine preferences based on intrinsic attributes: A tasting experiment in Alto Adige/Südtirol province

2021 ◽  
pp. 129-134
Author(s):  
Luigi Fabbris ◽  
Alfonso Piscitelli
Keyword(s):  
Food Product ◽  
Fractional Factorial ◽  
Region Of Origin ◽  
Double Blind ◽  
White Wines ◽  
Grape Varieties ◽  
The Impact ◽  
Administration Procedure ◽  
Selection Of

Different methods have been developed by researchers in modelling wine consumers purchase behaviour. The quality of a food product is described by a set of characteristics ascribable to the intrinsic and extrinsic product attributes (Olson and Jacoby, 1972). Price, brand, region of origin, grapes and gained awards are the key extrinsic attributes and physical characteristics of the wine such as taste and flavour are intrinsic attributes. This paper addresses the problem of measuring the intrinsic attributes that characterise the wine, based on specific characteristics and the impact on consumers in terms of preferences. To this end, a fractional factorial experiment held on a selection of white wines of the Alto Adige/Südtirol province in Italy. The sensorial experiment involved a voluntary sample of 33 mild wine consumers and concerned 6 grape varieties typical of that territory. For each variety, two producing cellars were selected for a total of 12 evaluated wines. The experiment followed a double-blind administration procedure to the sample and a paper questionnaire was used to elicit the consumers’ opinions on the tasted wines. The results show that intrinsic attributes, such as taste-olfactory intensity, harmony and olfactory complexity, are the drivers used in combination by consumers to rank wines in order of preference.

The Impact of Agile Methodologies on the Quality of Information Systems

2010 ◽  
Vol 1 (1) ◽  
pp. 41-56 ◽  
Author(s):  
Kenneth E. Kendall ◽  
Sue Kong ◽  
Julie E. Kendall
Keyword(s):  
Information Systems ◽  
Project Managers ◽  
Quality Of Information ◽  
Software Developers ◽  
Agile Methodologies ◽  
Development Methodology ◽  
Strategic Process ◽  
The Impact ◽  
Selection Of

Systems developers and IT project managers who apply agile methods for developing information systems (IS) subscribe to a set of values and principles. This adherence to a set of values and principles, along with a passion or fervor surrounding the agile philosophy, made us question whether the adoption of agile methodologies has an effect on information systems built, and in particular, the quality of the IS developed. In this paper we construct a conceptual model, conduct a survey of software developers, and analyze our results, which support our hypotheses about the importance of the strategic selection of a development methodology. We conclude that practicing project managers should consider the decision to use certain methodologies as part of the strategic process.

Regression & Correlation Analysis of Higher Mathematics on Probability and Statistics

2014 ◽  
Vol 556-562 ◽  
pp. 4167-4170
Author(s):  
Jing Mei Yang
Keyword(s):  
Close Relation ◽  
Strong Basis ◽  
Mathematics Scores ◽  
Math Scores ◽  
Probability And Statistics ◽  
The Impact ◽  
Core Course ◽  
Regression Correlation ◽  
Good Linear Correlation

Higher mathematics and Probability and statistics are the core course in university,There is a close relation between the two. By comparison and analysis of the scores of the two courses, this paper attempts to show that higher math scores on the impact of Probability and statistics, Higher mathematics X is in linear relationship with Probability and statistics Y,The coefficients for the two is r=0.541. the correlativity between higher mathematics and Probability and statistics has been investigated by regression analysis,the regression equation between the two is obtained,therefore the quantitative analysis can be carried out.Conclusion: There is a good linear correlation between higher mathematics scores and Probability and statistics scores.Description the quality of higher mathematics achievements on the impact of Probability and statistics can not be ignored, for the construction of Higher mathematics courses provide a strong basis.

scholarly journals MATERIAL AND THERMAL ANALYSIS OF LASER SINTERTED PRODUCTS

2013 ◽  
Vol 7 (1) ◽  
pp. 15-19 ◽  
Author(s):  
Radovan Hudák ◽  
Martin Šarik ◽  
Róbert Dadej ◽  
Jozef Živčák ◽  
Daniela Harachová
Keyword(s):  
Thermal Analysis ◽  
Heat Stress ◽  
Thermal Stresses ◽  
Processing Parameters ◽  
Sintering Process ◽  
Input Processing ◽  
Thermal Simulations ◽  
The Impact ◽  
Selection Of

Abstract Thermal analysis of laser processes can be used to predict thermal stresses and consequently deformation in a completed part. Analysis of temperature is also the basic for feedback of laser processing parameters in manufacturing. The quality of laser sintered parts greatly depends on proper selection of the input processing parameters, material properties and support creation. In order to relatively big heat stress in the built part during sintering process, the thermal simulation and thermal analysis, which could help better understand and solve the issue of parts deformations is very important. Main aim of presented work is to prepare input parameters for thermal simulations by the use of RadTherm software (Thermoanalytics Inc., USA), directly during the sintering process and after the process and find out the impact of the heat stress on a final shape and size of the prototype. Subsequently, an annealing process of constructed products after DMLS could be simulated and specified.

scholarly journals MACRO PHOTOGRAMMETRY IN INVENTORY OF HISTORICAL ENGRAVINGS AT THE ROYAL CASTLE IN WARSAW

2019 ◽  
Vol XLII-2/W9 ◽  
pp. 795-800
Author(s):  
D. Zawieska ◽  
J. Markiewicz ◽  
M. Łuba
Keyword(s):  
Past History ◽  
The Past ◽  
Orientation Process ◽  
Measuring Techniques ◽  
Historical Objects ◽  
Key Aspects ◽  
The Impact ◽  
Selection Of

<p><strong>Abstract.</strong> In the community historical objects play the role of witnesses of the past history. This creates an obligation to preserve and reconstruct them for future generations. Photogrammetric methods have been applied for those purposes for many years. In the process of development of inventory documentation, the key aspects related to the selection of appropriate measuring methods for particular objects and the creation of appropriate working conditions. At present, digital measuring techniques allow developing 3D photogrammetric documentation which is particularly valuable both, for conservators of historical objects, as well as for creating virtual museums. Particular attention should be paid to the utilisation of macro photography for that purpose which allows for recreating small fragments of historical details. The objective of this paper is to present possible use of macro photography for inventory of historical patterns engraved in brick walls of one of the cellars of the Royal Castle in Warsaw (Poland); they are called engravings or house marks. The cellar walls were made of bricks (20<span class="thinspace"></span>&amp;times;<span class="thinspace"></span>10<span class="thinspace"></span>cm) on the stone foundations, where a prison was located in the 17th century. Prisoners left their drawings of signs and crests. Bricks are destroyed, some of them are moss-grown, so many engravings are hardly visible and their depths vary between 3 and 5<span class="thinspace"></span>mm. The Canon 5D Mark II camera with the 50 mm macro lens was used to inventory engravings together with the shadow-free flash, mounted on the lens and a special frame with bolts, being the photogrammetric control network. To ensure the high quality of the 3D model, a network of photographs were acquired from two different distances; they were processed with the use of SfM/MVS algorithms implemented in Agisoft PhotoScan software. The aim of this paper is to discusses the impact of selection of control points on the accuracy of the orientation process, the impact of the point cloud density on correct projection of the digital surface, the influence of the DSM resolution on details of projection of shapes and selection of orthorectification and mosaicking parameters on the accuracy of orthoimage generation.</p>

scholarly journals The Evolution of Quality of Life Assessment and Use in Dermatology

Dermatology ◽  
2019 ◽  
Vol 235 (3) ◽  
pp. 167-174 ◽  
Author(s):  
Pavel V. Chernyshov
Keyword(s):  
Quality Of Life ◽  
Skin Diseases ◽  
Life Quality ◽  
Life Assessment ◽  
Core Outcome Sets ◽  
The Moment ◽  
Development And Validation ◽  
The Impact ◽  
Selection Of

The creation of the Dermatology Life Quality Index (DLQI) questionnaire facilitated many studies on the impact of skin diseases on patients’ quality of life (QoL). Many national and international guidelines recommend QoL assessment in dermatology, and some of them contain detailed recommendations on treatment goals and changes of treatment approaches based on DLQI score banding and minimal clinically important difference. The methodology of QoL in strument development and validation is constantly becoming more rigorous. Initiatives on selection of core outcome sets for skin diseases are focused on clinical trials but may also be beneficial for clinicians. There are various benefits of using QoL information in clinical practice, but experience of this is very limited at the moment. QoL assessment in dermatology is a rapidly developing field with a gradual shift from theory to practice.

scholarly journals Evidence-based pediatric dental practice within the clinician's reach: the case of the esthetic effect of topical silver diamine fluoride for caries control in primary dentition

2016 ◽  
Vol 64 (4) ◽  
pp. 369-375 ◽  
Author(s):  
Fernanda Santos de Oliveira de SOUSA ◽  
Ana Paula Pires dos SANTOS ◽  
Fernanda BARJA-FIDALGO ◽  
Branca Heloisa de OLIVEIRA
Keyword(s):  
Scientific Evidence ◽  
Controlled Vocabulary ◽  
Silver Diamine Fluoride ◽  
Fluoride Treatment ◽  
General Dental Practitioner ◽  
Bibliographic Search ◽  
The Impact ◽  
Caries Lesions ◽  
Selection Of

ABSTRACT Objective: The aim of this paper was to demonstrate how a general dental practitioner tried to answer, based on scientific evidence, to the question: "Does the darkening of caries lesions caused by silver diamine fluoride treatment contribute to reducing parents' acceptance of such treatment?". Methods: The dentist adopted the following approach: formulation of a specific question; bibliographic search using controlled vocabulary and free terms; selection of full-text articles for reading; reading and critical appraisal of selected articles; summary of the available evidence; translation of the evidence into clinical practice. The dentist identified 45 studies and selected 20 to be read in full, but only three could be used; two controlled trials from China and one from Brazil. Results: Results showed that the esthetic effect was neither a major issue nor a decisive factor for the indication of the proposed treatment. However, although there is robust scientific evidence on the effectiveness of silver diamine fluoride in arresting and preventing caries lesions, there is scarce information about its esthetic effect. Thus, the lack of studies assessing the impact of the darkening of caries lesions and the esthetic effect of the treatment on the quality of life of children and their parents must be emphasized. Conclusion: The dentist concluded that there is insufficient evidence about the esthetic effect of silver diamine fluoride applications on primary teeth and opted to inform it to his/her patients' caregivers and to share with them the decision whether to use it or not in each specific case.

Nudging Urban Food Pantry Users in Utah Toward Healthier Choices

2020 ◽  
pp. 152483992090468
Author(s):  
Casey Coombs ◽  
Mateja R. Savoie-Roskos ◽  
Heidi LeBlanc ◽  
Julie Gast ◽  
Jackie Hendrickson
Keyword(s):  
Low Cost ◽  
Dietary Quality ◽  
Healthy Foods ◽  
Chi Square ◽  
Convenience Sample ◽  
Food Pantry ◽  
Nutrition Programs ◽  
The Impact ◽  
Selection Of

Purpose. To evaluate the impact of a nudge program on food pantry clients’ self-reported selection and use of healthy foods. Method. A convenience sample of clients of six urban food pantries in Utah were surveyed about their experience with the Thumbs Up for Healthy Choices nudge program. Chi-square tests were used to identify associations between demographic characteristics and self-reported program impact. Results. Ninety-four percent (n = 158) of respondents agreed that the program made it easier to make healthy choices. Sixty-five percent reported healthier diets since its implementation. Additionally, Hispanic respondents were more likely to report positive impacts than non-Hispanic respondents. Conclusions and Implications. Nudge programs are effective in increasing the selection of healthy foods among pantry clients in Utah. Impacts seemed to be particularly positive for Hispanic pantry users in Utah. Nutrition programs should consider implementing these low-cost strategies to improve dietary quality of pantry users.

scholarly journals Implementation outcome assessment instruments used in physical healthcare settings and their measurement properties: a systematic review protocol

BMJ Open ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. e017972 ◽  
Author(s):  
Zarnie Khadjesari ◽  
Silia Vitoratou ◽  
Nick Sevdalis ◽  
Louise Hull
Keyword(s):  
Systematic Review ◽  
Measurement Properties ◽  
Cochrane Library ◽  
Health Measurement ◽  
Healthcare Settings ◽  
Implementation Outcomes ◽  
Psychometric Quality ◽  
The Impact ◽  
Selection Of

IntroductionOver the past 10 years, research into methods that promote the uptake, implementation and sustainability of evidence-based interventions has gathered pace. However, implementation outcomes are defined in different ways and assessed by different measures; the extent to which these measures are valid and reliable is unknown. The aim of this systematic review is to identify and appraise studies that assess the measurement properties of quantitative implementation outcome instruments used in physical healthcare settings, to advance the use of precise and accurate measures.Methods and analysisThe following databases will be searched from inception to March 2017: MEDLINE, EMBASE, PsycINFO, CINAHL and the Cochrane Library. Grey literature will be sought via HMIC, OpenGrey, ProQuest for theses and Web of Science Conference Proceedings Citation Index-Science. Reference lists of included studies and relevant reviews will be hand searched. Three search strings will be combined to identify eligible studies: (1) implementation literature, (2) implementation outcomes and (3) measurement properties. Screening of titles, abstracts and full papers will be assessed for eligibility by two reviewers independently and any discrepancies resolved via consensus with the wider team. The methodological quality of the studies will be assessed using the COnsensus-based Standards for the selection of health Measurement INstruments checklist. A set of bespoke criteria to determine the quality of the instruments will be used, and the relationship between instrument usability and quality will be explored.Ethics and disseminationEthical approval is not necessary for systematic review protocols. Researchers and healthcare professionals can use the findings of this systematic review to guide the selection of implementation outcomes instruments, based on their psychometric quality, to assess the impact of their implementation efforts. The findings will also provide a useful guide for reviewers of papers and grants to determine the psychometric quality of the measures used in implementation research.Trial registration numberInternational Prospective Register of Systematic Reviews (PROSPERO):CRD42017065348.

scholarly journals Investigation of the Impact of Forrest Fires on the Chemistry and Water Quality of Ground Water in Yellowstone National Park

1989 ◽  
Vol 13 ◽  
pp. 206-214
Author(s):  
Donald Runnells ◽  
Mary Siders
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Forest Fires ◽  
Yellowstone National Park ◽  
National Park ◽  
Sample Collection ◽  
The Impact ◽  
Existing Data ◽  
Selection Of

The objective of this research is to provide a detailed analysis and assessment of the impact of the 1988 forest fires on the chemistry and water quality of shallow ground water in Yellowstone National Park. Specific objectives for the first five months of this study (August through December, 1989) included: (1) review of existing data on the chemistry of ground water at selected sites in Yellowstone National Park, (2) selection of suitable sampling sites and initial rounds of sample collection and analysis, (3) continued literature search for comparable or complimentary studies, (4) establishment of professional contacts within the park, other universities, and within the U.S. Geological Survey.

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