How can multimodality be used to design usable interfaces in IPS2 for older employees?

Main objective of the recently started collaborative research project SFB/TR29 B4 is to provide cross-generational assistance to human operators working in industrial product-service systems (IPS(2)). By combining the ideas of action-specificity and multimodality a more immediate and purposeful reaction towards warnings is assumed. For this purpose, an action-specific warning system in form of a glove has been developed. It provides either visual, auditory or haptic feedback or a combination of all modalities. In a first study this prototype was compared with a conventional warning system, where multimodal devices were directly mounted to the machine. The test scenario used in this study is the 'changing of a spindle' on a replica of a micro milling machine. It was conducted with 42 participants. The experimental design is a within-design in terms of the two warning systems and a between-design concerning the three modalities and its combinations. Results of the two-way ANOVA with repeated measures on both factors 'system' and 'modality' show a significant main effect for the 'modality' and a significant interaction effect between both factors. Especially the haptic warnings on the action-specific glove were described as "that kind of warning, which evokes the fastest response".     

The influence of FDA advisory information and black box warnings on individual use of prescription antidepressants

We examine how use of antidepressant medications is influenced by Food and Drug Administration (FDA) warnings about the increased risk of suicidality associated with pediatric antidepressant use. With individual-level data on antidepressant use from the Medical Expenditure Panel Survey, we consider whether consumer responses to FDA warnings differ among targeted (children) and non-targeted (adult) age-groups. Because the warning labels specifically mentioned new users, we examine separately the effects of the warnings on initiations of antidepressant therapy and on continued use of antidepressants. We find evidence consistent with reduced initiation of antidepressant use among the intended population of children, and that usage among children with more highly educated parents responded earlier to FDA information. However, we also find spillover effects of reduced initiation among the non-targeted population of adults. Overall, our results indicate that the FDA warning may have led consumers to perceive risks beyond those specifically mentioned.     

What should I do?--a study about conflicting and ambiguous warning messages

Warnings are intended to reduce accidents caused by hazards. Behavioral compliance is the most important measure of warning effectiveness. However, in result of diverse circumstances (e.g., distraction, misuse, negligence), conflicting or ambiguous safety messages can be perceived. Since these are recurrent and can result in wrong behaviors encompassing severe consequences, such cases should be studied for safety purposes. We report findings on the participants' compliant behavior when performing a work-related task, while immersed in a virtual environment, and investigate the effect of conflicting messages on compliance with warnings. Two warnings (one regular and one with an appended out-of-order sign) and two types of signs (static and dynamic) were considered. The warning with the out-of-order sign configures the case of potentially conflicting messages. The gender effect was also investigated. The participants' behavior was assessed regarding to pushing a button as directed by the warnings. In the "out-of-order" warning, compliance was higher in the dynamic situation (53.3%) than in the static one (3.3%). Comparing with the non-conflicting warning, compliance was higher for both situations (static: 76.7%; dynamic: 100%). Women complied more than men. Although these results have limitations in their generalization, they are nonetheless relevant and deserve to be studied further.     

The Role of Ethnicity in the Emergency Decision-Making Process*

Although sociologists have studied for decades the process whereby citizens make emergency decisions in response to disaster warnings, very little attention has been given to understanding the role of ethnicity in this process. Data derived from fatality and injury counts following disasters, though sparse, documents that minority group citizens tend to suffer disproportionately high negative consequences in connection with the impact of disasters. On the basis of this information, it is inferred that differences exist between the emergency decision-making processes of minority and majority citizens. This paper lays the theoretical groundwork for beginning to revise existing conceptual models of warning response behavior to more adequately address the variation associated with minority group status. This goal is accomplished through pursuing three general tasks: (1) examining the process through which personal emergency decisions are made, (2) delineating social factors which impinge upon the outcomes of this decision-making process, and (3) integrating into an existing model of warning response behavior, additional variables which are related to minority status.     

Selection of a voice for a speech signal for personalized warnings: the effect of speaker's gender and voice pitch

There is an increasing interest in multimodal technology-based warnings, namely those conveying speech-warning statements. This type of warning may be tailored to the situation as well as to the target user's characteristics. However, more information is needed on how to design these warnings in a way that ensures intelligibility, promotes compliance and reduces the potential for annoyance. In this context, this paper reports an exploratory study whose main purpose was to assist the selection of a synthesized voice for a subsequent compliance study with personalized (i.e., using the person's name) technology-based warnings using Virtual Reality. Participants were requested to listen to speech signals, gathered from a speech synthesizer and post-processed in order to change the pitch perception, and then these were evaluated by fulfilling the MOS-X questionnaire. After that, the participants ranked the voices according to their preference. The effects of the speaker's gender and voice pitch, on both ratings and ranking were assessed. The preference of the male and female listeners for a talker's voice gender was also investigated. The results show that participants mostly prefer as first choice the high-pitched female voice, which also gathered the highest overall score in the MOS-X questionnaire. No significant influence of the participants' gender was found on the assessed measures.     

THE BOY WHO CRIED BUBBLE: PUBLIC WARNINGS AGAINST RIDING BUBBLES

Attempts by governments to stop bubbles by issuing warnings seem unsuccessful. This article examines the effects of public warnings using a simple model of riding bubbles. We show that public warnings against a bubble can stop it if investors believe that a warning is issued in a definite range of periods commencing around the starting period of the bubble. If a warning involves the possibility of being issued too early, regardless of the starting period of the bubble, it cannot stop the bubble immediately. Bubble duration can be shortened by a premature public warning, but lengthened if it is late.(JEL D82, E58, G18)     

Preparative study regarding the implementation of a muscular fatigue model in a virtual task simulator

Muscle fatigue is considered as one of the major risk factors for developing musculoskeletal disorders. The aim of this project was to select an adequate fatigue assessment model for an implementation in Dassault Systemes digital human modeling software. A review of existing MET models has been done resulting in a decision to use the extended Ma's model (2010). In this project, only shoulder and elbow joints have been tested and more subjects will be necessary for further validation. The model has been compared to several endurance time (ET) static studies. Two dynamic experiments were also performed by two different subjects. The results showed that because of the inter-individual variability, a simple prediction curve or value, can't well predict individual measured ET (or task failure). There is a need for a chart representation which also shows standard deviation (SD) range. Considering the SD range, the results were included in the prediction. Thus, this range may help the human factors expert to nuance the prediction results while considering environment factors and some realities specific to the industry.     

Improving evidence-based social work practice with youths exhibiting conduct problems through structured assessment

A key task in evidence-based case management of youth is the assessment of research-based risk and protective factors. In the present study we compare assessments of social workers using a structured assessment instrument with assessments of social workers not using such an instrument. Assessments of the exact same case—a vignette about a 14-year-old boy—conducted by 30 social workers using a structured assessment instrument and 30 social workers not using such an instrument were compared. The 60 assessments were also rated by independent researchers and senior social services managers, blind to whether an instrument had been used in the assessments or not. As hypothesized, using a structured assessment instrument resulted in the identification of a greater number of research-based risk and protective factors, and the assessments were rated as better in terms of general adequacy, quality, accuracy and potential treatment effectiveness, than when an instrument was not used. The present study demonstrates that social workers’ assessments of youth become more evidence-based, adequate and potentially more treatment effective when a structured assessment instrument is used as compared to when it is not.     

Whistleblowers: an essential resource for the sustainable prevention of risks in sociotechnical systems

Our world of industry and technology has, over the years, has seen undeniable successes in terms of safety and reliability. But major catastrophes and dramatic accidents continue, even today, to cause major human and material losses and to threaten the environment with pollution on a massive scale. Could these disasters and these accidents have been foreseen and avoided? Would it have been possible to anticipate their occurrence by detecting signals of potential hazards? It is unsettling to notice, through retrospective analysis of such events, that warnings had been issued long before the catastrophe or accident took place. This raises several questions, which we will attempt to address in this paper. Why are whistleblowers often not listened to, threatened, or simply ignored? Why are their warnings viewed as "bad omens" instead of essential resources to ensure safety? Do whistleblowers stand idly by, or do they implement individual and collective strategies to make themselves heard? Which managerial and organizational conditions are conducive to developing empowerment in whistleblowers? Based on four case studies, we attempt to address these questions, and offer a first level of analysis and explanation by proposing and defining two new concepts: operative resilience and strategic resilience.     

Determining optimal placement for pop-up messages: evaluation of a live trial of dynamic warning messages for electronic gaming machines

Dynamic warning messages are a harm minimization strategy aimed at preventing or reducing gambling-related problems by assisting individuals to make informed choices about their gambling. Laboratory studies have demonstrated the efficacy of dynamic warnings in facilitating responsible gambling. This article presents the results of a trial of the related effectiveness of dynamic warnings appearing either in the middle or on the periphery of electronic gaming machines (EGMs) screens in commercial gambling venues. Regular gamblers (n = 667) were surveyed to assess their recall of warning messages and the perceived impact of message placement on thoughts and behaviours. Messages appearing in the middle of screens were recalled to a greater extent, and respondents reported that these were more impactful and useful than messages on the periphery of screens. As one of the first trials of dynamic warning messages in operating EGM venues, the results provide important verification and validation of previous laboratory research. Results demonstrate that dynamic warning messages appearing in the middle of an EGM screen during play are likely to be a more effective harm minimization intervention than messages on the periphery of EGM screens.     

FDA warns Alkermes about OD risk on Vivitrol ads

The Food and Drug Administration (FDA) has warned Alkermes for omitting warnings about serious risks of Vivitrol in a print ad for the medication. The warning was posted Dec. 11 on the FDA's website.     

Graphic Gambling Warnings: How they Affect Emotions, Cognitive Responses and Attitude Change

The present study focuses on the effects of graphic warnings related to excessive gambling. It is based upon a theoretical model derived from both the Protection Motivation Theory (PMT) and the Elaboration Likelihood Model (ELM). We focus on video lottery terminal (VLT), one of the most hazardous format in the gaming industry. Our cohort consisted of 103 actual gamblers who reported previous gambling activity on VLT’s on a regular basis. We assess the effectiveness of graphic warnings vs. text-only warnings and the effectiveness of two major arguments (i.e., family vs. financial disruption). A 2 × 2 factorial design was used to test the direct and combined effects of two variables (i.e., warning content and presence vs. absence of a graphic). It was found that the presence of a graphic enhances both cognitive appraisal and fear, and has positive effects on the Depth of Information Processing. In addition, graphic content combined with family disruptions is more effective for changing attitudes and complying with the warning than other combinations of the manipulated variables. It is proposed that ELM and PMT complement each other to explain the effects of warnings. Theoretical and practical implications are discussed.     

Research report: a software solution for rapid policy assessment with reimbursed SMS and mobile cash

In this report, we introduce a system for running reimbursed surveys via text messages and mobile cash. The key advantage of this approach is the ability to conduct rapid surveys at an extremely low cost. After reviewing existing literature, we describe an automated system for conducting such surveys and demonstrate its merits in a proof-of-principle application in India. We obtain substantive insights on the effectiveness of a policy trial that are in line with expert assessments. This application suggests that our approach can be applied to a wide range of problems including impact assessment for policy or developmental aid, and monitoring of public sentiment, and possibly monitoring of conflict dynamics.     

Ecosystem services assessment of the urban forests of Addis Ababa,Ethiopia

Addis Ababa is a highland city with varied topography and landscape features. The mountains that surround the city are covered with urban forest of different types. These forests are providing various ecosystem services for the urban and peri-urban population of the city. Apart from surface temperature regulating function of the green spaces of Addis Ababa, no quantitative assessment of the carbon sequestration and soil protection ecosystem services provided by the urban forest has been conducted to date. The aim of this study was to assess selected ecosystem services such as carbon storage potential, habitat support and soil erosion protection provided by different categories of urban forest of Addis Ababa. The result showed that carbon density in the study area varied with forest categories viz. 293tons/ha, 142tons/ha and 132tons/ha in the dense, medium and open forest types respectively. The Shannon-Wiener diversity index is3.24 for Junipers dominated forest, 2.98 for mixed forest and 2.76 for Eucalyptus dominated forest. The formation of soil erosion features is significantly different among the Eucalyptus forest, Juniperus forest and Mixed forest where high incidence of soil erosion was recorded in the Eucalyptus forest. Therefore, irrespective of the environmental factors such as slope, aspect and elevation differences, there is an association between Eucalyptus forest cover and high soil erosion features. To ensure sustainable supply of ecosystem services and maintain a balanced urban environment, all green spaces in the city should be ecologically networked and diversified. Therefore, assessment of ecosystem services provided essential information for effective planning of the green space in terms of species composition and interconnectivity.     

Early warning of disastrous population movement

"This article undertakes to analyze existing and potential early warning facilities in man-made disasters which induce forced movement of people. It sets out some possible forms of early warning and the organizational options connected with them. It concludes that a mixed form of organization, combining some existing facilities and some modest new organization, could provide early warning, although this function would operate in a difficult and delicate political atmosphere that cannot be avoided."     

Drugs,the state and global change: A contemporary European perspective

Abstract

This article examines the issue of illicit drug control across three broad levels of analysis. On one level, it examines the nature of the response to a ‘global phenomenon’ and its impact on national sovereignty. On a second level, it considers emergent state forms and practices and their relationship to global changes; and, thirdly, it grounds the analysis temporally and empirically in the contemporary European Union (focusing on the issues raised in relation to an emergent European Police Office, better known as Europol). The complex, evolving and essentially fragmented character of state power is placed in the context of the classic state functions of authority and control. This is set against the growing transnational role of expert knowledge in policy‐making, and concludes with an assessment of the political implications that can be drawn from analysis of this complex set of factors.     

Creating a Crisis:German Mass Media andOil Supply in 1973-74

In the winter of 1973-74, the German Federal Republic importedmore oil than in any other year before or since. Nevertheless,the mass media were warning that an energy crisis might occur.Thereupon the population became nervous andbought more crudeoil products than ever before. As a consequence, short-termdifficulties of supply from industrial producers seemed to confirmthe warnings.     

Expert review of an approach to functional capacity evaluation

Functional capacity evaluation (FCE) is a widely used tool in work rehabilitation, despite the limited examination of the soundness of its measurement properties. This paper outlines the development of a new approach to FCE, the GAPP FCE, and reports on the findings of an expert review of aspects of its content validity and technical adequacy and how it meets established test criteria. Five expert occupational therapists reviewed the materials of the GAPP FCE then completed a questionnaire related to the content validity, technical adequacy and safety, reliability, validity, practicality and utility of the GAPP FCE. The experts gave support to most aspects of these criteria. The main issue identified by the review was related to interpretation and extrapolation of the FCE results for return to work. This and other issues are discussed in relation to recent developments in FCE and plans for future development of the GAPP FCE.     

From Rules to Prototypes

Summary

Traditional expert systems attempt to represent logically the complex decision rules used by experts. This approach has some defined successes but has been less effective with multi-dimensional problems such as characterize clinical situations. Research suggests that effective expertise is based more on memory than on analysis and logic. The article discusses the nature of memory-based expertise and questions the feasibility of capturing it through expert systems.

Training based on computerized case simulations is suggested as an alternative. The paper also discusses the need for knowledge on the specific impact interventions have on distinct subgroups of consumers. This knowledge can be used to guide training and assist consumers in making key decisions.     

Briefly Noted

Last month, the federal Food and Drug Administration (FDA) warned that combining gabapentin or pregabalin with central nervous system (CNS) depressants such as opioids could result in serious breathing problems for patients with underlying respiratory problems, or in the elderly. New labeling will be required on gabapentin and pregabalin, the FDA said. There is less evidence supporting such a risk in otherwise healthy people, the FDA said in the Dec. 19, 2019, warning. Gabapentin, first approved in 1993, is not a controlled substance. It is approved to treat various conditions, including seizures, nerve pain, fibromyalgia and restless legs syndrome. Pregabalin, first approved in 2004, is Schedule V on the Controlled Substances Act, the lowest‐risk category of controlled substance. “With the evolution of the opioid crisis, getting ahead of new concerns or addressing those that are already evident requires examining signs of misuse and abuse as soon as any signal emerges,” said Douglas Throckmorton, M.D., deputy director for regulatory programs in the FDA's Center for Drug Evaluation and Research, in announcing the warning. “Reports of gabapentinoid abuse alone, and with opioids, have emerged and there are serious consequences of this co‐use, including respiratory depression and increased risk of opioid overdose death. In response to these concerns, we are requiring updates to labeling of gabapentinoids to include new warnings of potential respiratory depressant effects.” Drug manufacturers are also being required to conduct clinical trials to evaluate the abuse potential of all gabapentinoids, particularly when combined with opioids, said Throckmorton. The downside is that prescribers could inadvertently increase opioid use by not using these medications, Throckmorton acknowledged, saying “we do not want to unintentionally increase opioid use by turning prescribers away from this class of pain medications.” For more information, go to https://www.fda.gov/drugs/drug‐safety‐and‐availability/fda‐warns‐about‐serious‐breathing‐problems‐seizure‐and‐nerve‐pain‐medicines‐gabapentin‐neurontin .