scholarly journals Examples of Mental Mistakes Made by Systems Engineers While Creating Tradeoff Studies

2013 ◽  
Vol 1 (1) ◽  
pp. 22 ◽  
Author(s):  
James Bohlman ◽  
A. Terry Bahill

Problem statement: Humans often make poor decisions. To help them make better decisions, engineers are taught to create tradeoff studies. However, these engineers are usually unaware of mental mistakes that they make while creating their tradeoff studies. We need to increase awareness of a dozen specific mental mistakes that engineers commonly make while creating tradeoff studies. Aims of the research: To prove that engineers actually do make mental mistakes while creating tradeoff studies. To identify which mental mistakes can be detected in tradeoff study documentation. Methodology: Over the past two decades, teams of students and practicing engineers in Bahill’s Systems Engineering courses wrote the system design documents for an assigned system. On average, each of these document sets took 100 man-hours to create and comprised 75 pages. We used 110 of these projects, two dozen government contractor tradeoff studies and three publicly accessible tradeoff studies. We scoured these document sets looking for examples of 28 specific mental mistakes that might affect a tradeoff study. We found instances of a dozen of these mental mistakes. Results: Often evidence of some of these mistakes cannot be found in the final documentation. To find evidence for such mistakes, the experimenters would have had to be a part of the data collection and decision making process. That is why, in this paper, we present only 12 of the original 28 mental mistakes. We found hundreds of examples of such mistakes. We provide suggestions to help people avoid making these mental mistakes while doing tradeoff studies. Conclusions: This paper shows evidence of a dozen common mental mistakes that are continually being repeated by engineers while creating tradeoff studies. When engineers are taught about these mistakes, they can minimize their occurrence in the future.

Author(s):  
Ian K Jennions ◽  
Octavian Niculita ◽  
Manuel Esperon-Miguez

Integrated Vehicle Health Management (IVHM) describes a set of capabilities that enable effective and efficient maintenance and operation of the target vehicle. It accounts for the collecting of data, conducting analysis, and supporting the decision-making process for sustainment and operation. The design of IVHM systems endeavours to account for all causes of failure in a disciplined, systems engineering, manner. With industry striving to reduce through-life cost, IVHM is a powerful tool to give forewarning of impending failure and hence control over the outcome. Benefits have been realised from this approach across a number of different sectors but, hindering our ability to realise further benefit from this maturing technology, is the fact that IVHM is still treated as added on to the design of the asset, rather than being a sub-system in its own right, fully integrated with the asset design. The elevation and integration of IVHM in this way will enable architectures to be chosen that accommodate health ready sub-systems from the supply chain and design trade-offs to be made, to name but two major benefits. Barriers to IVHM being integrated with the asset design are examined in this paper. The paper presents progress in overcoming them, and suggests potential solutions for those that remain. It addresses the IVHM system design from a systems engineering perspective and the integration with the asset design will be described within an industrial design process.


2018 ◽  
Vol 10 (12) ◽  
pp. 4451 ◽  
Author(s):  
Sarfaraz Hashemkhani Zolfani ◽  
Edmundas Kazimieras Zavadskas ◽  
Payam Khazaelpour ◽  
Fausto Cavallaro

Over the past few centuries, the process of decision-making has become more complicated in different respects. Since the initial phase of Multiple Criteria Decision Making (MCDM) around fifty years ago, Multiple Attribute Decision Making (MADM) has continued developing over the years as a sub-concept of MCDM. Noticeably, the importance of the decision-making process is increasingly expanding to such an extent that it necessarily blends into the undeniable processes of MADM actual models. Novel methods with different perspectives have been introduced considering the dynamic MADM concepts of time and future in classical frameworks; however, they do not overcome challenges in practice. Recently, Prospective MADM (PMADM) as a specific approach has presented future-oriented models using already known approaches of MCDM, and it has innovative items which show barriers of classic model of MADM. However, PMADM practically needs more conceptual bases to illustrate and plan the future of real decision-making problems. The Multi-Aspect Criterion is a new concept in mapping the future of the PMADM outline. In this regard, two examples of sustainability will be analyzed, and different requirements and aspects associated with PMADM will be discussed in this study. This new approach can support the PMADM outline in more detail and deal with a decision-making structure that can be considered as novel to industry experts.


2021 ◽  
Vol 42 (02) ◽  
pp. 191-195

Good reviewers are essential to the success of any journal and peer review is a major pillar of science. We are grateful to those mentioned below to have dedicated their time and expertise to help our authors improve and refine their manuscripts and support the Editor(s) in the decision making process in the past year.


2021 ◽  
Vol 31 (6) ◽  
pp. R303-R306
Author(s):  
Bharath Chandra Talluri ◽  
Anke Braun ◽  
T.H. Donner

2017 ◽  
Vol 12 (1) ◽  
pp. 39
Author(s):  
Aswatini Raharto

In the past, women migrants are considered as passive migrants following their parents or husbands. However, the increasing number of Indonesian women migrating to work abroad, even outnumbering men, suggests the importance of understanding the reasons underlined their movements. This article examines the decision-making process of working abroad among the returned Indonesian women migrants. A quantitative approach was used to analyze secondary data from several government institutions. Also, the qualitative approach was utilized to understand the migration decision-making process. The study was conducted in Cilacap District, one of the major labor migrant sending districts in Indonesia. The result showed that women have no other choice than working abroad, mainly due to the economic reason. Moreover, the initiative to work abroad commonly comes from the women themselves, while other family members, especially father and husband, only give their consent. It can be said that women are more autonomous and self-assured when deciding to work abroad. 


2002 ◽  
Vol 35 (1) ◽  
pp. 71-82 ◽  
Author(s):  
PATRICIA E. BAILEY ◽  
ZENILDA V. BRUNO ◽  
MARIA F. BEZERRA ◽  
IVANY QUEIRÓS ◽  
CRISTIANA M. OLIVEIRA

Three groups of adolescents are compared with regard to their own considerations of abortion and when they believe abortion is justified. One group of adolescents terminated their pregnancies (n=95), a second became pregnant and carried their pregnancies to term but considered abortion (n=68), and the third also carried their pregnancies to term but did not consider abortion (n=204). The study was carried out between 1995 and 1998 in Fortaleza, Brazil. Adolescents were interviewed at the time of their hospitalization or their first prenatal visit and again at 6 weeks and 1 year post-abortion or postpartum. Friends and family recommended abortion to at least half of the teenagers in each group. Teenagers who aborted were more accepting of abortion than those who did not abort, while those who considered abortion found the practice more justified than those who did not consider abortion. Teenagers who aborted became less accepting a year later, while those who did not consider abortion became more accepting. A better understanding of adolescent attitudes towards abortion and their decision-making process should help adults and professionals meet the needs of adolescents for support in the process and in the reduction of the number of unintended pregnancies in the future.


2018 ◽  
Vol 50 (01) ◽  
pp. 5-7

Good reviewers are essential to the success of any journal and peer review is a major pillar of science. We are grateful to those mentioned below to have dedicated their time and expertise to help our authors improve and refine their manuscripts and support the Editors in the decision making process in the past year.The following received out Top Reviewer of the Year award:We wish all our readers, reviewers, authors and friends a happy and prosperous 2018!Matthias Schott, MD, PhD Stefan R. Bornstein, MD, PhD Constantine A. Stratakis, MD, D(med)Sci Editors-in-Chief


2021 ◽  
pp. 105-122
Author(s):  
Craig J. Bryan

This chapter argues that suicide can be more usefully understood as a consequence of decision-making processes that are vulnerable to environmental and social influence rather than a consequence of internal states or traits such as mental illness. Mental illness and emotional distress more generally are better understood as one particular context within which the decision to make a suicide attempt or not often presents itself, but this does not mean that mental illness is the only context within which this choice is considered. This also does not mean that mental illness causes suicide. The basic concept involved in the marshmallow experiment—decision-making under different conditions—has received increased attention in the past decade among suicide researchers. Studies reveal that the decision-making process of someone who almost died as a result of a suicide attempt was no different from the decision-making process of someone who had never attempted suicide, was not currently suicidal, and did not have a mental illness. This finding lines up with the idea that there can be multiple pathways to suicide.


Author(s):  
Offer Shai ◽  
Yoram Reich ◽  
Daniel Rubin

Many methods that support human creativity by manual or computational means have been proposed in the past. They rely on the assumption that following a certain process of reasoning might lead to generating ideas considered creative. We start by defining creativity as a capability that enables the creation of systems that are patentable. Subsequently, we present a method called infused creativity, which is derived from infused design. The method guarantees generating creative designs by transforming systems from remote disciplines. Finding these systems and their transformations is done through a provably guaranteed to work process based on the underlying discrete mathematical representation. We describe the method of infused creativity and illustrate its operation in designing a new active torque amplifier system. We also discuss the future development of the method.


2000 ◽  
Vol 35 (4) ◽  
pp. 419-438 ◽  
Author(s):  
Ludger Helms

There are few Chapters of the Federal Republic'S History that could be written without a prominent reference to the Christian Democratic Union (CDU). Since 1949 Christian Democratic chancellors have led German governments for no less than 37 years. Even when in opposition, the Christian Democrats - composed at the national level of the CDU and the Bavarian Christian Social Union (CSU)1 - constituted more often than not the strongest parliamentary party group (Fraktion) in the Bundestag, such as after the federal elections of 1969, 1976 and 1980. Also at state level and in the Bundesrat, which represents the individual states (L-nder) in the national decision-making process, the Christian Democrats quite often held a dominant position justifying occasional remarks of a ‘CDU/CSU bias’ within the German party system.


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