A performance assessment of objective measures for evaluating the quality of glottal waveform estimates

2008 ◽  
Vol 50 (1) ◽  
pp. 56-66 ◽  
Author(s):  
E. Moore ◽  
J. Torres
Author(s):  
Juan M. Riaño Caraza ◽  
Fernando S. Flores Avila ◽  
Iván Faría Rojas ◽  
Luis E. Brito Rodríguez

Chicontepec is one of the areas with the largest volume of original oil in place in Mexico; however, after more than 30 years of operation, its development has been very limited due to the high geological complexity and low rock quality of their reservoirs. The reservoirs are found in layered sequences of sediments deposited in turbiditic environments which have suffered different degrees of diagenesis, there is a great level of vertical heterogeneity and a very limited level of lateral continuity. The permeability of the reservoir area is in the range of 0.1 to 5 md, depending on the location and degree of diagenesis, with this level of permeability most wells require hydraulic fracturing to be produced economically. The volume of oil originally in place according to the latest certifications is around 130 billion barrels, of which to this date have been produced 200 MMbls, which represents a current recovery factor of 0.15%. In order to accelerate the development of reserves PEMEX has diversified efforts assigning some areas to other companies. This will provide greater ability to assess best practices and technologies. To evaluate the efforts of companies a performance assessment model was designed, which takes into account the integral complexity of each area to be fair in comparing the results obtained for the different areas. The aim of this paper is to describe the methodology used in the developing of the performance evaluation and integral complexity characterization models.


2011 ◽  
Vol 38 (S 01) ◽  
Author(s):  
B Lindelius ◽  
E Björkenstam ◽  
C Dahlgren ◽  
R Ljung ◽  
C Stefansson

Author(s):  
I Wayan Eka Mahendra

This study aims to determine the effect of formative assessment and learning approach to the mathematics learning outcome after controlling the numerical aptitude. It was a quasi-experiment with a sample of 186 students obtained by using multistage random sampling technique with 2x2 factorial designs. The data were analyzed by ANCOVA. After controlling the numerical aptitude, the results are: the mathematics learning outcome of the students who followed a contextual approach was better than the ones who followed a conventional learning approach, the mathematics learning outcome of the students who were given a performance assessment was better than the ones who were given a conventional assessment, the interaction between the learning approach and formative assessment affected the students learning outcome for mathematics, the students who followed a contextual learning approach were more suitable to be given a performance assessment, whereas the ones who followed a conventional learning approach were more appropriate to be given a conventional assessment. Based on the research findings, junior high school teachers are suggested to improve their students learning outcome for mathematics. Then, teachers need to use a learning approach and formative assessment accurately and correctly. 


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Stephan Brenner ◽  
Caterina Favaretti ◽  
Julia Lohmann ◽  
Jobiba Chinkhumba ◽  
Adamson S. Muula ◽  
...  

Abstract Background Countries in Africa progressively implement performance-based financing schemes to improve the quality of care provided by maternal, newborn and child health services. Beyond its direct effects on service provision, evidence suggests that performance-based financing can also generate positive externalities on service utilization, such as increased use of those services that reached higher quality standards after effective scheme implementation. Little, however, is known about externalities generated within non-incentivized health services, such as positive or negative effects on the quality of services within the continuum of maternal care. Methods We explored whether a performance-based financing scheme in Malawi designed to improve the quality of childbirth service provision resulted positive or negative externalities on the quality of non-targeted antenatal care provision. This non-randomized controlled pre-post-test study followed the phased enrolment of facilities into a performance-based financing scheme across four districts over a two-year period. Effects of the scheme were assessed by various composite scores measuring facilities’ readiness to provide quality antenatal care, as well as the quality of screening, prevention, and education processes offered during observed antenatal care consultations. Results Our study did not identify any statistically significant effects on the quality of ANC provision attributable to the implemented performance-based financing scheme. Our findings therefore suggest not only the absence of positive externalities, but also the absence of any negative externalities generated within antenatal care service provision as a result of the scheme implementation in Malawi. Conclusions Prior research has shown that the Malawian performance-based financing scheme was sufficiently effective to improve the quality of incentivized childbirth service provision. Our findings further indicate that scheme implementation did not affect the quality of non-incentivized but clinically related antenatal care services. While no positive externalities could be identified, we also did not observe any negative externalities attributable to the scheme’s implementation. While performance-based incentives might be successful in improving targeted health care processes, they have limited potential in producing externalities – neither positive nor negative – on the provision quality of related non-incentivized services.


Author(s):  
Bharath Ramakrishnan ◽  
Husam Alissa ◽  
Ioannis Manousakis ◽  
Robert Lankston ◽  
Ricardo Bianchini ◽  
...  

Author(s):  
Pablo Campos-Garzón ◽  
Javier Sevil-Serrano ◽  
Yaira Barranco-Ruíz ◽  
Palma Chillón

There are no systematic reviews that have identified the existing studies assessing active commuting physical activity (PA) to and from (to/from) school using objective measures, as well as the contribution of both walking and cycling to/from school to PA levels. To fill this gap in the literature, this systematic review will aim (a) to identify existing studies that assess active commuting PA to/from school with objective measures in young people and to examine the contribution of walking and cycling to/from school to PA levels, and (b) to propose an appropriate methodology and practical considerations to assess active commuting PA to/from school based on the studies identified. The review protocol was registered in PROSPERO (CRD42020162004). We will conduct a systematic search up to 2020 in five databases: PubMed, Web of Science, SPORTdiscuss, Cochrane Library, and National Transportation Library. Both the risk of bias and the quality of the identified studies will be evaluated through different instruments according to the design of each study. This systematic review will help to choose the most appropriate objective measures to assess active commuting PA to/from school and to promote walking and cycling to/from school to increase PA levels.


Tempo ◽  
1947 ◽  
pp. 13-14
Author(s):  
Joan Cross

In Prague, during August, I was taken to a performance given by young Russian dancers graduated from the Moscow and Leningrad Ballet Schools. They were all soloists, and the programme was made up of short divertissements from ballets in nearly every instance quite unfamiliar to me. I am no expert on ballet, though I have watched it often enough, but the veriest ignoramus would have recognised their great technical achievement and the unusual quality of their energy and enthusiasm.


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