Prediction of the percentage lean of pig carcasses with a small or a large number of instrumental carcass measurements – an illustration with HGP and Vision

2006 ◽  
Vol 82 (6) ◽  
pp. 919-928 ◽  
Author(s):  
B. Engel ◽  
E. Lambooij ◽  
W. G. Buist ◽  
H. Reimert ◽  
G. Mateman
Keyword(s):  
Vision System ◽  
Statistical Methodology ◽  
Measurement Instruments ◽  
Depth Measurement ◽  
Regression Methods ◽  
Ordinary Regression ◽  
Pig Carcasses ◽  
Accuracy Of Prediction ◽  
Near Future ◽  
Selection Of

AbstractIn this paper we report on the results of a recent dissection experiment in The Netherlands where prediction formulae for the percentage lean meat in pig carcasses with the Hennessy Grading Probe (HGP) and a vision system (from now on referred to as Vision) were determined. Predictions with the HGP were based on one fat and one muscle depth measurement only, while predictions with Vision were based on as many as 115 direct and derived measurements. The data from this dissection experiment were used to illustrate the statistical calculations involved in relation to the number of carcass measurements. Prediction with instruments that gather a large number of measurements per carcass is not covered by the present European Community (EC) regulations. Therefore the calculations were conducted according to new regulations for statistical methodology in pig carcass grading that are expected to be adopted by the EC in the near future. The calculations included consideration of 3 subpopulations (females, entire males and castrated males). The Vision data were also used to show that ordinary regression after selection of a subset of carcass measurements severely under estimates the accuracy of prediction: instruments and associated prediction formulae are seemingly much more accurate than they truly are. When standard regression methods are used for instruments that gather a large number of measurements, there is a considerable risk that measurement instruments will be selected for the wrong reasons. Accuracy of approved instruments may not even comply with the EC-regulations, with poor consequences for harmonization within the EC.

scholarly journals PROPRIEDADES PSICOMÉTRICAS DE INSTRUMENTOS DE MEDIDAS: BASES CONCEITUAIS E MÉTODOS DE AVALIAÇÃO - PARTE I

2018 ◽  
Vol 26 (4) ◽  
Author(s):  
Maria Elena Echevarría-Guanilo ◽  
Natália Gonçalves ◽  
Priscila Juceli Romanoski
Keyword(s):  
Patient Reported Outcomes ◽  
Measurement Instruments ◽  
Health Measurement ◽  
Patient Reported ◽  
Selection Of

RESUMO Objetivo: apresentar e discutir bases conceituais e métodos de avaliações que fundamentam importantes propriedades de instrumentos de medidas. Método: estudo teórico embasado na literatura internacional e nacional e nos instrumentos Consensus-based Standards for the selection of health Measurement Instruments e Evaluating the Measurement of Patient-Reported Outcomes que contemplam conceitos de avaliação de instrumentos para apreciação de resultados relatados pelo paciente. Inicialmente são apresentados e discutidos os conceitos de confiabilidade, responsividade e interpretabilidade, citados exemplos das principais formas de avaliação dessas propriedades. Resultados: pode-se perceber que ainda há divergências em algumas descrições conceituais. Entretanto, os autores ressaltam a importância da confiabilidade para avaliar o instrumento de medida. Destaca-se a importância do conhecimento do Modelo Conceitual, das propriedades de medidas e dos diferentes métodos de avaliação para garantir, principalmente em estudo de validação de instrumentos, resultados confiáveis e válidos. Conclusões: a discussão apresentada sobre a confiabilidade, responsividade e interpretabilidade contribui para os profissionais de saúde no conhecimento teórico e senso crítico na escolha de instrumentos e na condução de análises sobre essas propriedades de medida.

scholarly journals Emerging Biomarkers for the Selection of Advanced NSCLC-Affected Immunotherapy Patients

2021 ◽  
Vol 2 (2) ◽  
pp. 197-206
Author(s):  
Luigi Della Gravara ◽  
Ciro Battiloro ◽  
Antonietta Letizia ◽  
Rosa Cantile ◽  
Vito D'Agnano ◽  
...  
Keyword(s):  
Advanced Nsclc ◽  
Predictive Biomarkers ◽  
Treatment Algorithms ◽  
Combination Treatments ◽  
Near Future ◽  
Selection Of

Immunotherapy in the form of ICIs has revolutionized advanced NSCLC treatment algorithms, with ICI-containing combination treatments being the latest addition to approved regimens. However, PD-L1 still represents the only routinely assessed and validated biomarker apart from genetic drivers testing, impairing our capacity to personalize and guide treatment. Therefore, this paper aims to analyze the most promising emerging predictive biomarkers that could help us in the near future to select patients more effectively.

Development and Implementation of Shape Comparison of 3D CAD Models

2009 ◽  
Author(s):  
Sagar Chowdhury ◽  
Zahed Siddique
Keyword(s):  
Computer Hardware ◽  
Efficient Design ◽  
User Friendliness ◽  
Specialized Knowledge ◽  
3D Cad ◽  
Large Databases ◽  
Modeling Software ◽  
Cad Models ◽  
Near Future ◽  
Selection Of

With the advancements of 3D modeling software, the use of CAD in design has become a standard practice. In recent years development in computer hardware and improvements in user friendliness of the CAD software has allowed designers to quickly and easily modify the CAD models. This modification capability allows CAD to be an integral part of the design process. Due to the increase in global competition, companies have become increasingly interested in fast and efficient design processes. One way to achieve improved efficiency is through better collaboration among designers working in common or similar projects and disciplines. A large design problem often requires specialized knowledge from several fields. Collaboration among the designers from these fields will ensure efficient design. Interaction among the designers can prevent redesign of similar components/subsystems, which requires the ability to share their designs. With the increase of collaboration, designers can now get access to large databases of 3D CAD models. But the challenge lies in search capabilities to identify common models from a large database. These considerations suggest that in the near future a challenge in 3D CAD industry will be how to find models of similar components and products. This paper presents an approach and its implementation to measure the similarity among a number of CAD models. The approach is based on the extraction and organization of information from the CAD models, which is followed by the suitable selection of commonality index and calculation of the commonality among a set of CAD models. A set of Vacuum cleaners are modeled and then compared to demonstrate the application of the approach.

scholarly journals Swedish House Owners’ Intentions Towards Renovations: Is there a Market for One-Stop-Shop?

Buildings ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 164 ◽  
Author(s):  
Georgios Pardalis ◽  
Krushna Mahapatra ◽  
Giangiacomo Bravo ◽  
Brijesh Mainali
Keyword(s):  
Financial Incentives ◽  
Energy Savings ◽  
Online Questionnaire ◽  
Level Of Involvement ◽  
Factors Affecting ◽  
Younger Age ◽  
One Stop ◽  
Near Future ◽  
Selection Of

In this paper, we examine factors affecting owners’ intention for renovation of their detached houses. Furthermore, we analyze their interest in choosing a one-stop-shop (OSS) service for the renovation, even though such a concept is not yet established in Sweden, but emerging in other parts of Europe. Our study is based on responses to an online questionnaire survey of 971 house owners residing in Kronoberg Region in Sweden. About 76% of the respondents intend to renovate in the near future, with approximately 71% of them preferring to renovate individual components of their dwelling and 5% to renovate their whole house in steps. House owners of younger age, higher income, higher education, and those with an interest for environmental issues, were the ones most interested in physical renovations, which improves energy efficiency of the building. For those house owners, one-stop-shop can facilitate the decision-making process, and help them to choose those measures that will improve their quality of life. Approximately 20% of the respondents had a positive view towards an one-stop-shop, which is an indicator that market for such a service exists. Parameters such as quality of work, cost and energy savings and specification of measures to be adopted are the key for the promotion of one-stop-shop. Additionally, house owners want to have a certain level of involvement in the selection of actors performing the renovation. Moreover, financial incentives, e.g., loans, do not play a significant role for the selection of one-stop-shop, but act as complementary motive for house owners.

Photogrammetry: A Powerful Tool for Geometric Analysis of Solar Concentrators and Their Components

2005 ◽  
Vol 127 (1) ◽  
pp. 94-101 ◽  
Author(s):  
Klaus Pottler ◽  
Eckhard Lu¨pfert ◽  
Glen H. G. Johnston ◽  
Mark R. Shortis
Keyword(s):  
Geometric Analysis ◽  
Solar Concentrator ◽  
Measurement Instruments ◽  
Solar Concentrators ◽  
Gravitational Forces ◽  
Surface Data ◽  
Efficient Measurement ◽  
Close Range ◽  
Coordinate Measurements ◽  
Selection Of

Digital close range photogrammetry has proven to be a precise and efficient measurement technique for the assessment of shape accuracies of solar concentrators and their components. The combination of high quality mega-pixel digital still cameras, appropriate software, and calibrated reference scales in general is sufficient to provide coordinate measurements with precisions of 1:50,000 or better. The extreme flexibility of photogrammetry to provide high accuracy 3D coordinate measurements over almost any scale makes it particularly appropriate for the measurement of solar concentrator systems. It can also provide information for the analysis of curved shapes and surfaces, which can be very difficult to achieve with conventional measurement instruments. The paper gives an overview of quality indicators for photogrammetric networks, which have to be considered during the data evaluation to augment the measurement precision. A selection of measurements done on whole solar concentrators and their components are presented. The potential of photogrammetry is demonstrated by presenting measured effects arising from thermal expansion and gravitational forces on selected components. The measured surface data can be used to calculate slope errors and undertake ray-trace studies to compute intercept factors and assess concentrator qualities.

LNG pricing trends and key considerations

2015 ◽  
Vol 55 (2) ◽  
pp. 417
Author(s):  
Jacques van Rhyn ◽  
Janelle Sadri
Keyword(s):  
Transfer Pricing ◽  
Asia Pacific ◽  
Asia Pacific Region ◽  
Trade Patterns ◽  
Market Situation ◽  
Competitive Prices ◽  
Speculative Trading ◽  
Near Future ◽  
Selection Of

Historically, LNG has been sold through long-term contracts with limited flexibility in volume and price. LNG trade patterns have evolved significantly, adding to increased sales of multiple cargoes on the spot market, brokered trades and speculative trading positions being taken up by non-traditional players. Buyers in the Asia-Pacific region are keen to secure supply for local markets, while Australian producers, particularly subsidiaries of foreign headquartered groups, are under pressure to sell at competitive prices. From a transfer pricing perspective, the Australian Taxation Office (ATO) has placed increased scrutiny on the commerciality of arrangements, arm’s length outcomes and profit allocations between Australian taxpayers and their international related parties (e.g. marketing and trading hubs). This extended abstract covers: factors that could impact on the selection of a price index and the slope or gradient to be applied in pricing formulae; blended pricing based on an average of different indices, and why pooling and trading may make commercial sense, although revenue authorities may not look favourably upon it; the importance of the contractual terms, the market situation and the other commercial contract conditions on the pricing of related-party LNG sales; and, the value in potentially seeking an advanced pricing agreement in a related party LNG pricing context, given the significance of the transactions. Given the practical and commercial challenges facing the industry and with several projects commencing production in the relatively near future, this is very topical. The authors use case studies to illustrate the key concepts.

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