On contradiction clouds

AbstractOur proposal, through this article, addresses the issue of obtaining, representing and selecting the appropriate subset of contradictions among a complete set of contradictions resulting from an initial situation framing within a specific domain. This contribution has to be understood within the Inventive Design context since most of its grounding relies on the fact that any problem can be formulated as a contradiction (in the sense of TRIZ). By proposing the concept of “contradiction cloud” as three value graphical representation of a set of elementary contradictions, we claim that designers considerably reduce the fuzziness of a contradiction choice prior entering in a solving phase in Inventive Design processes. The modes of interpretation of this cloud will be also presented. The impact of this new element in the teaching of TRIZ was tested both in educational situations within the framework of our engineering curriculum and in several industrial partnerships. A discussion section will then highlight the assets, the limits and the perspectives of our contribution

A participatory approach to health promotion for informal sector workers in Thailand

BACKGROUND: This study aims to promote occupational health in the informal sector in Thailand by using a participatory approach. The success of the intervention is based on an evaluation of the informal sector workers' a) knowledge, attitudes, and behaviors in occupational health and safety, b) work practice improvement, and c) working condition improvement. METHODS: This study applies the Participatory Action Research (PAR) method. The participants of the study consisted of four local occupations in different regions of Thailand, including a ceramic making group in the North, a plastic weaving group in the Central region, a blanket making group in the Northeast, and a pandanus weaving group in the South. Data was collected using both qualitative and quantitative methods through questionnaires, industrial hygiene instruments, and group discussions. RESULTS: The results showed that the working conditions of the informal sector were improved to meet necessary standards after completing the participatory process. Also, the post-test average scores on 1) the occupational health and safety knowledge, attitudes and behaviors measures and 2) the work practice improvement measures were significantly higher than the pre-test average scores (p=sig). CONCLUSIONS: The results demonstrate that the participatory approach is an effective tool to use when promoting the health safety of the informal sector and when encouraging the workers to voluntarily improve the quality of their own lives

Investigating the laundry logistics system of small-sized public hospital: Can the efficiency of operations be improved under the constraints of Thailand’s administrative culture?

yesPurpose All internal logistics systems contribute to the overall success of healthcare service delivery; laundry management (as a closed loop logistics system) is a critical system which facilitates patient recovery and rehabilitation. Studies indicate that applying efficiency measures/improvement tools in such systems, can deliver financial savings and strengthening of in-house competencies (Banerjea-Brodeur et al. 1998; Golden et al. 2008). This study focuses on the review and improvement of laundry management systems in a Thailand Hospital and the organizational culture underpinning this. This hospital was awarded the highest level of hospital accreditation (high level of quality and environmental compliance within this site). Despite this, problems existed at a very basic level with the laundry management, which can undermine patient dignity and respect and increase risk infection and health complications. This study contributes to the Thai healthcare agenda, a core mission of which is to “Develop efficient and equitable integrated health service system for both normal situation and emergency with emphasis on basic rights, specialized service and emergency medicine, surveillance system, disease prevention and control and health threats” (MOPH 2003). Research Approach The key research methods employed include literature review, in-depth interview, observation, documentation and content analysis. A mixed methods methodology was considered appropriate for this study for a number of reasons including a lack of previous insight into this system and the number of actors involved. To this end a triangulated view of the laundry management system was realized. Findings and Originality Delays in the provision of linen and patient clothing (1-4 days bottleneck) were adversely affected by unstructured laundry operations, insufficient personnel, poor job design and worn-out equipment. As a result of this analysis several solutions were steadily implemented which led to: (i) linen shortage was reduced by 12.12% - 28.48%, and (ii) the total cleaning time per cycle was reduced by 130 minutes (45.12%). The impact of the improvement practices in place were perceived to be undermined by cultural factors such as very high internal conflict, the new hospital Director with relatively low power, and limited budget allocated to purchasing linen. Research Impacts Very few studies have explored a closed-loop supply chain of hospital laundry management systems, fewer collected data from key users using a mixed methods methodology. Reverse Exchanges (RE), a new theoretical framework, was adopted to examine the laundry processes. This study attempts to this study fill these gaps. Although this research studied one district hospital; the practices can be greatly generalized; and the diagram of laundry operations and this research design can be replicated. Practical Impacts Improvement measures have been identified which directly impact on the effectiveness and efficiency of this operation. Whilst this is once case study site analysis, this can offer a positive contribution to the healthcare agenda within this country

Modelling volume change and deformation in food products/processes: An overview

Volume change and large deformation occur in different solid and semi-solid foods during processing, e.g., shrinkage of fruits and vegetables during drying and of meat during cooking, swelling of grains during hydration, and expansion of dough during baking and of snacks during extrusion and puffing. In addition, food is broken down during oral processing. Such phenomena are the result of complex and dynamic relationships between composition and structure of foods, and driving forces established by processes and operating conditions. In particular, water plays a key role as plasticizer, strongly influencing the state of amorphous materials via the glass transition and, thus, their mechanical properties. Therefore, it is important to improve the understanding about these complex phenomena and to develop useful prediction tools. For this aim, different modelling approaches have been applied in the food engineering field. The objective of this article is to provide a general (non-systematic) review of recent (2005–2021) and relevant works regarding the modelling and simulation of volume change and large deformation in various food products/processes. Empirical-and physics-based models are considered, as well as different driving forces for deformation, in order to identify common bottlenecks and challenges in food engineering applications.Fil: Purlis, Emmanuel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos; ArgentinaFil: Cevoli, Chiara. Università di Bologna; ItaliaFil: Fabbri, Angelo. Università di Bologna; Itali

A NASA family of minicomputer systems, Appendix A

This investigation was undertaken to establish sufficient specifications, or standards, for minicomputer hardware and software to provide NASA with realizable economics in quantity purchases, interchangeability of minicomputers, software, storage and peripherals, and a uniformly high quality. The standards will define minicomputer system component types, each specialized to its intended NASA application, in as many levels of capacity as required

The Implications of the Working Memory Model for the Evolution of Modern Cognition

What distinguishes the cognition of biologically modern humans from that of more archaic populations such as Neandertals? The norm in paleoanthropology has been to emphasize the role of language and symbolism. But the modern mind is more than just an archaic mind enhanced by symbol use. It also possesses an important problem solving and planning component. In cognitive neuroscience these advanced planning abilities have been extensively investigated through a formal model known as working memory. The working memory model is now well-enough established to provide a powerful lens through which paleoanthropologists can view the fossil and archaeological records. The challenge is methodological. The following essay reviews the controversial hypothesis that a recent enhancement of working memory capacity was the final piece in the evolution of modern cognition

Separation of Transition and Heavy Metals Using Stationary Phase Gradients and Chelation Thin Layer Chromatography / Evaluation of the Effectiveness of POGIL-PCL Workshops

Gradient surfaces exhibit a variation in functionality along the length of the surface. One method for preparing gradients is controlled-rate infusion (CRI). In Part 1 of this work, CRI was used to prepare gradients for the purpose of separating transition and heavy metals. Initial work on this project was focused on controlling the retention of the metal ions by varying the number of amine groups, aminoalkoxysilane concentration, and the infusion time. The retention factors of four metal ions varied predictably with increasing number of amine groups, increasing aminoalkoxysilane concentration, and increasing infusion time, producing small but useful changes in the retention factors. The continuation of this project involved the preparation of two-dimensional multi-component gradients on TLC plates, which were used to separate six transition and heavy metals. The retention, and thus the separation, was affected by the presence or absence of a gradient and the direction of the gradient. Part 2 of this work focused on understanding the factors that motivated instructors in the early and late stages in the process of change. Instructors who attended the POGIL-PCL (Process-Oriented Guided Inquiry Learning in the Physical Chemistry Laboratory) workshops were asked to complete online surveys. The goals of the first survey were to understand the factors that initially interested instructors in POGIL-PCL, to determine if instructors enter the implementation stage, and to understand the factors that affect how instructors implement POGIL-PCL. Later surveys were designed to explore the development of the POGIL-PCL network and assess whether implementation is sustained over time