Evaluation of Preanalytical Quality Indicators by Six Sigma and Pareto`s Principle     

Sweta Kulkarni  R. Ramesh  A. R. Srinivasan  C. R. Wilma Delphine Silvia 《Indian journal of clinical biochemistry : IJCB》2018,33(1):102-107

Preanalytical steps are the major sources of error in clinical laboratory. The analytical errors can be corrected by quality control procedures but there is a need for stringent quality checks in preanalytical area as these processes are done outside the laboratory. Sigma value depicts the performance of laboratory and its quality measures. Hence in the present study six sigma and Pareto principle was applied to preanalytical quality indicators to evaluate the clinical biochemistry laboratory performance. This observational study was carried out for a period of 1 year from November 2015–2016. A total of 1,44,208 samples and 54,265 test requisition forms were screened for preanalytical errors like missing patient information, sample collection details in forms and hemolysed, lipemic, inappropriate, insufficient samples and total number of errors were calculated and converted into defects per million and sigma scale. Pareto`s chart was drawn using total number of errors and cumulative percentage. In 75% test requisition forms diagnosis was not mentioned and sigma value of 0.9 was obtained and for other errors like sample receiving time, stat and type of sample sigma values were 2.9, 2.6, and 2.8 respectively. For insufficient sample and improper ratio of blood to anticoagulant sigma value was 4.3. Pareto`s chart depicts out of 80% of errors in requisition forms, 20% is contributed by missing information like diagnosis. The development of quality indicators, application of six sigma and Pareto`s principle are quality measures by which not only preanalytical, the total testing process can be improved.  相似文献   

Knowledge space oddity: How to increase the intensity and relevance of the technological progress of European regions     

Roberta Apa  Ivan De Noni  Luigi Orsi  Silvia Rita Sedita 《Research Policy》2018,47(9):1700-1712

This work contributes to previous research on the relationship between specific features of a regional knowledge space and the technological progress of the region. In particular, the main element of originality of this work is to have singled out the determinants of the technological progress intensity and relevance. We acknowledge the importance of knowledge assets for new knowledge production, and we identify path-dependent processes that allow a region to become increasingly competitive in terms of innovation potential. In particular, adopting an evolutionary view of regional development, we describe the regional knowledge space through four crucial characteristics: 1) technological knowledge base, 2) technological cumulativeness, 3) technological diversification, and 4) technological relatedness. We then measure to what extent each of the knowledge space’s characteristics differently affects the technological progress intensity and relevance of the region. A longitudinal study of 269 European regions over the period 1996–2012 was organized using data from REGPAT and Eurostat databases. Results show that technological relatedness affects positively both the intensity and relevance of the technological progress of European regions and that the other components of the knowledge space show a different impact on the two features of the technological progress. Finally, implications for EU policies supporting and stimulating regional technological progress are discussed.  相似文献   

Attributions and Attitudes of Mothers and Fathers in Italy     

Bombi AS  Pastorelli C  Bacchini D  Di Giunta L  Miranda MC  Zelli A 《Parenting, science and practice》2011,11(2-3):129-141

OBJECTIVE: The present study examined mean level similarities and differences as well as correlations between mothers' and fathers' attributions regarding successes and failures in caregiving situations and progressive versus authoritarian attitudes. DESIGN: Interviews were conducted with both mothers and fathers in 177 Italian families from Rome and Naples. RESULTS: Fathers' attributions reflected higher perceived control over failure than did mothers' attributions, whereas mothers reported attitudes that were more progressive than did fathers. Only the difference in progressive attitudes remained significant after controlling for parents' age, education, and possible social desirability bias. Site differences emerged for four of the seven attributions and attitudes examined; three remained significant after controlling for parents' age, education, and possible social desirability bias. Medium effect sizes were found for concordance between parents in the same family for authoritarian attitudes and modernity of attitudes after controlling for parents' age, education, and possible social desirability bias. CONCLUSIONS: This work elucidates ways that parent gender and cultural context relate to attributions regarding parents' success and failure in caregiving situations and to progressive versus authoritarian parenting attitudes.  相似文献   

Pedagogical Content Knowledge of Inquiry： An Instrument to Assess It and Its Application to High School In-Service Science Teachers     

Juana Silvia  Espinosa-Bueno Diana  Veronica  Labastida-Pina Kira  Padilla-Martinez Andoni  Garritz 《美中教育评论》2011,(5):599-614

It is argued that the lack of consensus on what constitutes an inquiry-based approach makes the generalization about it difficult, because the concept is relatively unspecific and vague. This problem can partially be solved by constructing a set of activities promoted by inquiry, thus defining the inquiry objectives for classroom and laboratory teaching. Five high school and college Mexican teachers＇ PICK （pedagogical inquiry/content knowledge） was documented and assessed by means of Loughran, Mulhall and Berry＇s （2004） l-CoRe （inquiry content representation） developed by the authors through a proposal of a set of seven inquiry activities. They were also interviewed to construct the professional and pedagogical experience repertoires, a second tool by Loughran et al. （2004） to document PICK. It was observed that all teachers interviewed have used inquiry to modify their students＇ way of thinking, mainly through question posing. Some of them employed research as their main tool to promote scientific inquiry but others mentioned the lack of time to do it. It is interesting to notice that in spite of the fact that inquiry is out of the curriculum in M6xico, the teachers make use of it to improve their teaching practice. According to their answers, their actions in the classroom or the lab were classified within the three general approaches expressed by Lederman （2004）： implicit, historical and explicit. It is concluded that a given teacher cannot be classified exclusively in one of them, because in his/her activities one general approach overlaps the others. The authors conclude that Lederman＇s classification has to be taken into account as an orientation to characterize a given activity of one teacher, even though the same teacher may use another activity characterized by other general approach. That is, Lederman＇s classification applies to characterize activities, not persons  相似文献   

Is the Confirmation Bias Bubble Larger Online? Pre-Election Confirmation Bias in Selective Exposure to Online versus Print Political Information     

George David Hooke Pearson  Silvia Knobloch-Westerwick 《Mass Communication and Society》2019,22(4):466-486

The Internet era has often been blamed for a predominant engagement with attitude-consistent information among citizens (labeled confirmation bias), which is thought to hurt political deliberation. This study offers the first rigorous evidence suggesting that online news fosters greater confirmation bias than traditional media. A 2 × 2 within-subjects experiment presented political articles, varying stance (conservative vs. liberal) and medium (online vs. print); selective exposure was logged or taped. Data were collected during the U.S. 2016 presidential primaries. As expected in the preelection context, partisans whose party was anticipated to lose the election (conservatives) did not exhibit confirmation bias. Liberals showed confirmation bias, but only online, suggesting print contexts reduce confirmation bias.  相似文献   

An Agent-Based Model for Tertiary Educational Choices in Italy     

Leoni  Silvia 《Research in higher education》2022,63(5):797-824

Research in Higher Education - Although the low level of tuition fees and the absence of other access barriers, Italy is characterized by low educational attainments at the university level. This...  相似文献   

Investigating learners' engagement and science learning outcomes in different designs of participatory simulated games     

Silvia Wen-Yu Lee  Meilun Shih  Jyh-Chong Liang  Yi-Chen Tseng 《British journal of educational technology : journal of the Council for Educational Technology》2021,52(3):1197-1214

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State-Dependent Memory in Infants     

Sabine Seehagen  Silvia Schneider  Katharina Sommer  Laura La Rocca  Carolin Konrad 《Child development》2021,92(2):578-585

Why do infants remember some things and not others? Human infants frequently cycle through different states such as calm attentiveness, wakeful activity, and crying. Given that cognitive processes do not occur in isolation, such fluctuations in internal state might influence memory processing. In the present experiment, declarative memory in 9-month-old infants (N = 96) was heavily state dependent. Infants exhibited excellent retention of a deferred imitation task after a 15-min delay if their state at encoding was identical to their state at retrieval (e.g., calm). Infants failed to exhibit retention if their state at encoding was different from their state at retrieval (e.g., calm vs. animated). Infant memory processing depends on internal cues.  相似文献   

Transformation and digital literacy: Systematic literature mapping     

Farias-Gaytan  Silvia  Aguaded  Ignacio  Ramirez-Montoya  Maria-Soledad 《Education and Information Technologies》2022,27(2):1417-1437

Education and Information Technologies - The advancements of technology have allowed digital transformation to reach all productive sectors, including the education sector and its members. This...  相似文献