Decision Rules: How one Calibration Software Vendor Approaches the Various Options of “taking uncertainty into account”

Author(s):  
Mike Linn ◽  

The latest release of ISO/IEC-17025 requires that calibrations laboratories must take their measurement uncertainty into account when making a statement of conformity to a specified requirement. The standard further requires the laboratory to take the risks (both consumer and producer risk) into consideration when employing these “decision rules”. While 17025 does not specify exactly what your laboratory decision rules must be, there are numerous documents that can offer guidance on the subject. Each method has its pros and cons relating to complexity, statistical rigor, and tradeoffs between the two sides of the risk equation. The modern calibration laboratory struggles to offer affordable services to customers who demand increased accuracy in their equipment. The old 4:1 TAR rule of thumb is long gone and with the customer shop floor equipment reaching the accuracies of the laboratory standards of just a few years ago, the challenge of maintaining an appropriate ratio of uncertainty is becoming progressively more difficult. This paper looks at the most common methods of taking that measurement uncertainty into account and how our software is configured and structured to allow the laboratory to apply several different methods depending on their individual customer requirements. These approaches are not fixed, one size fits all, but are customizable by the laboratory, to fit their customers exact requirements, even if their customers have widely different demands.

2014 ◽  
Vol 7 (3) ◽  
pp. 518-535 ◽  
Author(s):  
Mark Mullaly

Purpose – The purpose of this paper is to explore the role of decision rules and agency in supporting project initiation decisions, and the influences of agency on decision-making effectiveness. Design/methodology/approach – The study this paper is based upon used grounded theory methodology, and sought to understand the influences of individual decision makers on project initiation decisions within organizations. Data collection involved 28 participants who were involved in project initiation decisions within their organizations, who discussed the process of project initiation in their organization and their role within that process. Findings – The study demonstrates that the overall effectiveness of project initiation decisions is a product of agency, process effectiveness or rule effectiveness. The employment of agency can have a direct influence on decision-making effectiveness, it can compensate for organizational inadequacies of a process or political nature, and it can be constrained in the evidence of formal and effective organizational practices. Research limitations/implications – While agency was recognized by all participants, there are clearly circumstances where actors perceive the ability to exercise agency to be externally constrained. The study is exploratory, contributing to the development of substantive theory. Theory testing as well as a more in-depth investigation of the underlying drivers of agency would be valuable. Practical implications – The study provides executives and individuals supporting the initiation of projects with insights on how to effectively influence the effectiveness of project initiation decisions, and the degree to which personal characteristics influence organizational dynamics. Originality/value – Most discussions of agency has been framed the subject as an executive- or board-level phenomenon. The current study demonstrates that agency is in fact being perceived and operationalized at all levels. Those demonstrating agency in the majority of instances in this study do so in exercising stewardship behaviours. This has important implications for how agency is perceived by executives, and by how agency is exercised by actors at all levels of the organization.


Measurement ◽  
2019 ◽  
Vol 135 ◽  
pp. 180-188 ◽  
Author(s):  
Unai Mutilba ◽  
Alejandro Sandá ◽  
Ibon Vega ◽  
Eneko Gomez-Acedo ◽  
Ion Bengoetxea ◽  
...  

Author(s):  
Vinicius Mitchell ◽  
Luiza Novaes

In July 2020, a group of illustrators were contacted so we could hear if their views on remote work and professional collaboration had changed, in light of the covid-19 pandemic scenario. These illustrators participated in a previous research conducted with Brazilian newspaper illustrators between 2016-2018. The main research objective was to understand how illustrators were fitting in newspaper's routines and production, considering the multiplatform publishing trend led by the rise in mobile and digital readership. As it was observed then, illustrators were already used to working remotely. The investigation focused in assessing how these professionals viewed the pros and cons of face-to-face working way compared to working remotely. Also their views on the interaction with other fields’ professionals, in projects involving Illustration & Design were considered. Illustrators of Brazilian newspapers answered a query and an interview with open questions. Although the original research had not been motivated by a pandemic scene, we believe that by renewing the subject with new data collected in 2020, the study can contribute to the ongoing broader discussions over reorganizing workflows for remote work, especially those involving designers and projects with multidisciplinary teams. This paper aims at presenting and discussing qualitative data regarding these issues.


2020 ◽  
Vol 4 (2) ◽  
pp. 94-107
Author(s):  
Elkana Chrisna Wijaya

Deborah's Leadership Pragmatism for Today's Christian Women's Leadership. The discussion on women's leadership is a contemporary issue that always brings polemic almost in various fields. The pros and cons of this matter from the beginning until the present remain a hot issue, while the freedom and involvement of women in the world of leadership, both in the spiritual and non-spiritual realms, is increasingly widespread and growing. Conditions and situations, of course, need to get a solution in the form of the contribution of thought, both theological and pragmatic. Conducting research on the subject, using a qualitative methodology, so that not only refers to the biblical texts that are directly related, but also refers to other texts relating to the research subjects, as well as using literature that is closely related to leadership. Thus, it is hoped that the results of this study will enlighten various parties and can be accounted for. Abstrak: Pragmatisme Kepemimpinan Debora bagi Kepemimpinan Wanita Kristen di Masa Kini. Pembahasan mengenai kepemimpinan wanita merupakan isu kontemporer yang senantiasa mendatangkan polemik hampir di berbagai bidang. Pro dan kontra mengenai hal tersebut dari dulu hingga kekinian tetap menjadi isu hangat, sementara kebebasan dan keterlibatan kaum wanita dalam dunia kepemimpinan, baik itu di dunia keagamaan maupun sekular semakin luas dan terus berkembang. Kondisi itu, tentunya perlu mendapatkan solusi dalam bentuk sebut penelitian teologis yang dapat menjadi acuan dalam menyelesaikan masalah tersebut. Pelaksanaan penelitian terhadap subyek tersebut, menggunakan metodologi penelitian kualitatif, sehingga tidak hanya mengacu pada teks Alkitab yang berkaitan langsung, namun juga mengacu pada teks-teks lainnya yang berkaitan dengan subyek penelitian, di samping juga menggunakan literatur-literatur yang berkaitan erat dengan kepemimpinan. Dengan demikian, diharapkan hasil penelitian ini berupa sebuah penelitian Alkitabiah yang dapat memberikan pemecahan masalah dan dapat diaplikasikan dalam kepemimpinan wanita Kristen di masa kini.


Author(s):  
Amira K. Bennison

This chapter provides an introduction to the theme of political legitimacy in the medieval Islamic Maghrib and al-Andalus. It reviews previous historiographical approaches to the subject and considers the Arabic sources for the period, arguing for the importance of considering the two sides of the straits of Gibraltar as a single cultural zone. It then looks at political legitimacy in the Islamic Middle East and North Africa in general before tracing the evolution of particular themes in the Maghrib and al-Andalus up to the period covered by the volume. It ends with a brief review of the other chapters in the volume and their multi-disciplinary contribution to understandings of political legitimation in the region.


Author(s):  
Solange Oliveira Rezende ◽  
Edson Augusto Melanda ◽  
Magaly Lika Fujimoto ◽  
Roberta Akemi Sinoara ◽  
Veronica Oliveira de Carvalho

Association rule mining is a data mining task that is applied in several real problems. However, due to the huge number of association rules that can be generated, the knowledge post-processing phase becomes very complex and challenging. There are several evaluation measures that can be used in this phase to assist users in finding interesting rules. These measures, which can be divided into data-driven (or objective measures) and user-driven (or subjective measures), are first discussed and then analyzed for their pros and cons. A new methodology that combines them, aiming to use the advantages of each kind of measure and to make user’s participation easier, is presented. In this way, data-driven measures can be used to select some potentially interesting rules for the user’s evaluation. These rules and the knowledge obtained during the evaluation can be used to calculate user-driven measures, which are used to aid the user in identifying interesting rules. In order to identify interesting rules that use our methodology, an approach is described, as well as an exploratory environment and a case study to show that the proposed methodology is feasible. Interesting results were obtained. In the end of the chapter tendencies related to the subject are discussed.


2019 ◽  
Vol 114 (1) ◽  
pp. 37-52
Author(s):  
Assoc. Prof. Stefan Antczak

The article points to the social aspects of marketing in the market activity of business entities. It results in the processual character of management in the exchange of products (values) between two sides of the market (demand and supply), which consists of two market groups (two groups of people). It is these groups of people that are the subject of management, including those involved in the implementation of its basic functions, necessary for the implementation of the objectives of market activity. This subjective character of management was presented in selected economic entities.


On a representation made by the author of the advantages which would result from a series of simultaneous observations of the tides, continued for a fortnight, along a great extent of coast, orders were given for carrying this measure into effect at all the stations of the Preventive service on the coasts of England, Scotland, and Ireland, from the 7th to the 22nd of June inclusive. From an examination of the registers of these observations, which were transmitted to the Admiralty, but part of which only have as yet been reduced, the author has been enabled to deduce many important inferences. He finds, in the first place, that the tides in question are not affected by any general irregularity, having its origin in a distant source, but only by such causes as are merely local, and that therefore the tides admit of exact determination, with the aid of local meteorological corrections. The curves expressing the times of high water, with relation to those of the moon’s transit, present a very satisfactory agreement with theory; the ordinates having, for a space corresponding to a fortnight, a minimum and maximum magnitude, though not symmetrical in their curvatures on the two sides of these extreme magnitudes. The amount of flexure is not the same at different places; thus confirming the result already obtained by the comparison of previous observations, and especially those made at Brest; and demonstrating the futility of all attempts to deduce the mass of the moon from the phenomena of the tides, or to correct the tables of the tides by means of the mass of the moon. By the introduction of a local, in addition to the general, semimenstrual inequality, we may succeed in reconciling the discrepancies of the curve which represents this inequality for different places; discrepancies which have hitherto been a source of much perplexity. These differences in the semimenstrual inequality are shown by the author to be consequences of peculiar local circumstances, such as the particular form of the coast, the distance which the tide wave has travelled over, and the meeting of tides proceeding in different directions; and he traces the influence of each of these several causes in producing these differences. A diurnal difference in the height of the tides manifests itself with remarkable constancy along a large portion of the coast under consideration. The tide hour appears to vary rapidly in rounding the main promontories of the coast, and very slowly in passing along the shores of the intervening bays; so that the cotidal lines are brought close together in the former cases, and, in the latter, run along nearly parallel to the shore; circumstances which will also account for comparative differences of level, and of corresponding velocities in the tide stream. The author intends to prosecute the subject when the whole of the returns of these observations shall have undergone reduction.


2021 ◽  
Vol 854 (1) ◽  
pp. 012093
Author(s):  
Silvana Stajkovic ◽  
Dragan Vasilev ◽  
Mirjana Dimitrijevic ◽  
Nedjeljko Karabasil

Abstract Knowledge of the measurement uncertainty of test results is fundamentally important for laboratories, their customers and all parties using and interpreting these results. In conformity assessment, a measurement result is used to decide if an item of interest conforms to a specified requirement. Because of measurement uncertainty, there is always the risk of incorrectly deciding whether or not an item conforms to a specified requirement based on the measured value of a property of the item. Conformity assessment can be quite challenging when the entity measured is so close to the tolerance limits of the specification that its uncertainty, however estimated, critically affects decision-making. In such cases, different decision rules can be used to make statements of conformity. The aim of this paper is to provide a survey of methods for the evaluation of measurement uncertainty in testing, as well as to stress the need for appropriate estimation of measurement uncertainty. This paper also aims to assist testing laboratories in understanding the different decision rules used in conformity assessment and level of risk (such as false accept and false reject) associated with the decision rule employed.


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