Case Based Reasoning and TRIZ : a coupling for Innovative conception in Chemical Engineering

With the evolutions of the surrounding world market, researchers and engineers have to propose technical innovations. Nevertheless, Chemical Engineering community demonstrates a small interest for innovation compared to other engineering fields. In this paper, an approach to accelerate inventive preliminary design for Chemical Engineering is presented. This approach uses Case Based Reasoning (CBR) method to model, to capture, to store and to make available the knowledge deployed during design. CBR is a very interesting method coming from Artificial Intelligence, for routine design. Indeed, in CBR the main assumption is that a new problem of design can be solved with the help of past successful ones. Consequently, the problem solving process is based on past successful solutions therefore the design is accelerated but creativity is limited and not stimulated. Our approach is an extension of the CBR method from routine design to inventive design. One of the main drawbacks of this method is that it is restricted in one particular domain of application. To propose inventive solution, the level of abstraction for problem resolution must be increased. For this reason CBR is coupled with the TRIZ theory (Russian acronym for Theory of solving inventive problem). TRIZ is a problem solving method that increases the ability to solve creative problems thanks to its capacity to give access to the best practices in all the technical domains. The proposed synergy between CBR and TRIZ combines the main advantages of CBR (ability to store and to reuse rapidly knowledge) and those of TRIZ (no trade off during resolution, inventive solutions). Based on this synergy, a tool is developed and a mere example is treated

Case Based Reasoning for Chemical Engineering Design

With current industrial environment (competition, lower profit margin, reduced time to market, decreased product life cycle, environmental constraints, sustainable development, reactivity, innovation…), we must decrease the time for design of new products or processes. While the design activity is marked out by several steps, this article proposed a decision support tool for the preliminary design step. This tool is based on the Case Based Reasoning (CBR) method. This method has demonstrated its effectiveness in other domains (medical, architecture…) and more recently in chemical engineering. This method, coming from Artificial Intelligence, is based on the reusing of earlier experiences to solve new problems. The goal of this article is to show the utility of such method for unit operation (for example) pre-design but also to propose several evolutions for CBR through a domain as complex as the chemical engineering is (because of its interactions, non linearity, intensification problems…). During the pre-design step, some parameters like operating conditions are not precisely known but we have an interval of possible values, worse we only have a partial description of the problem.. To take into account this imprecision in the problem description, the CBR method is coupled with the fuzzy sets theory. After a mere presentation of the CBR method, a practical implementation is described with the choice and the pre-design of packing for separation columns

Optimal regulatory design for the Central Bank of Russia

The Central Bank of Russia (CBR) assumes a wide range of functions not raditional to a central bank. In addition to the daily conduct of monetary policy, it acts as a regulator and supervisor of the banking sector. It is currently overssing the implementation of a deposit insurance scheme and is the main owner of Russia's largest commercial bank, Sberbank. As this additional functions may conflict with the CBR policy objectives, I review how the current design of the CBR deviates from the optimal allocation of regulatory powers within a central bank prescribed in the literature. I then empirically investigate the need for a supervisory body within the CBR. Using a simple Taylor rule framework I find that the CBR does not use its "hands-on" supervisory information to maintain financial stability, but rather to accomodate state-owned banks' balances.Central Bank; Prudential Regulation and Supervision; Monetary Policy Rules; Russia

The Effectiveness of Case-Based Reasoning: An Application in Sales Promotions

This paper deals with Case-based Reasoning (CBR) as a support technology for sales promotion (SP) decisions. CBR-systems try to mimic analogical reasoning, a form of human reasoning that is likely to occur in weakly-structured problem solving, such as the design of sales promotions. In an empirical study, we find evidence that use of the CBR-system improves the quality of SP-campaign proposals. In terms of the creativity of the proposals, decision-makers who think highly divergent (i.e., who tend to generate many, and diverse ideas in response to a problem) benefit most from prolonged system usage. Creativity, in turn, is positively related to the (practical) usability of a proposal. These results suggest that the CBR-system is most effective when it is used as an idea-generation tool that reinforces the strength of divergent (creative) thinkers. A convergent thinking style, in which case the CBR-system has a compensating role, even has a negative impact on CBR-system usage. Increasing the decision-maker's personal belief in the usefulness of the system, e.g., by training or education, may help to alleviate this reluctance to use the CBR-system.marketing management support systems;sales promotions;case-based reasoning;weakly-structured decision making

Kajian Nilai Daya Dukung Tanah Dasar Menggunakan Dynamic Cone Penetrometer dan Cbr In Place

In road construction, there is a need to assess the adequacy of the subgrade to behave satisfactorily beneath a pavement. The adequacy usually representated as California Bearing Ratio (CBR) value. In-situ penetration tests have been widely used in geotechnical and foundation engineering for site investigation in support of analysis and design.The CBR in-place is typical in-situ penetration test. While the Dynamic Cone Penetration Test (DCPT), relatively cost cheaper than CBR in-place test, could give the CBR value through formulas stated by researchers.This paper presented the comparison of CBR values found from CBR in-place test and DCP test along 22,4 km of road construction at WKS road, Merlung Region of Jambi Province.The result shown the same trend of CBR value of both methods. However, difference between two test method will result in different of segment CBR as use for pavement design. Based on minimum criterion, the minimum result should be use in design

Algorithm for Adapting Cases Represented in a Tractable Description Logic

Case-based reasoning (CBR) based on description logics (DLs) has gained a lot of attention lately. Adaptation is a basic task in the CBR inference that can be modeled as the knowledge base revision problem and solved in propositional logic. However, in DLs, it is still a challenge problem since existing revision operators only work well for strictly restricted DLs of the \emph{DL-Lite} family, and it is difficult to design a revision algorithm which is syntax-independent and fine-grained. In this paper, we present a new method for adaptation based on the DL $\mathcal{EL_{\bot}}$. Following the idea of adaptation as revision, we firstly extend the logical basis for describing cases from propositional logic to the DL $\mathcal{EL_{\bot}}$, and present a formalism for adaptation based on $\mathcal{EL_{\bot}}$. Then we present an adaptation algorithm for this formalism and demonstrate that our algorithm is syntax-independent and fine-grained. Our work provides a logical basis for adaptation in CBR systems where cases and domain knowledge are described by the tractable DL $\mathcal{EL_{\bot}}$.Comment: 21 pages. ICCBR 201

Kentucky CBR’s and the Soil Support Value

Several ASTM and Kentucky CBR tests were performed at different molding moisture contents and compactive energies on the AASHO embankment soil, four representative Kentucky soils, and one soil from Ohio. These data were compared to CBR data previously reported by Shook and Fang. For CBR\u27s ranging from about 4 to 12, a relationship was developed between Kentucky and ASTM CBR\u27s. Within this range, Kentucky and ASTM CBR\u27s are approximately equal. Molding specimens under the static pressure of 2000 pounds per square inch as used in the Kentucky CBR procedure produced specimens with initial dry densities that averaged about 6 percent higher than those obtained by AASHO Designation: T99-57. CBR\u27s and axial swell values were also higher. For soil specimens molded at the same initial dry density, CBR\u27s of statically compacted specimens are distinctively lower than those observed for dynamically compacted specimens. For relatively small decreases in initial dry densities, there were very large decreases in CBR\u27s. This probably accounts for discrepancies that have been observed between field and laboratory CBR\u27s. Three different correlations between Kentucky CBR\u27s and the AASHO Road Test soil support values were developed. The first relationship was made by assuming a logarithmic scale between Kentucky CBR\u27s of 5.2 and 100, which corresponded to values on the soil support scale of 3 and 10, respectively. The Kentucky CBR of 5.2 was determined by performing tests on the AASHO road subgrade soils. For practical purposes, the AASHO Road Test crushed stone base material was assumed to be a 100 percent CBR material (this assumption was based on CBR data previously reported by Shook and Fang). The second correlation was obtained by assuming a logarithmic scale between Kentucky CBR\u27s of 5.2 and 90, corresponding to values on the soil support scale of 3 and 10, respectively. The third relationship was constructed through computations using the Kentucky flexible pavement design curves and the AASHO Design Chart (Pt= 2.5). A correlation was found between a Kentucky CBR of 5.2 determined by tests and 5.7 determined through computations based on 1958 design curves and 6.2 based on 1971 curves

Q2S Enhancing Pedagogy: Reflections on Teaching SOC3020 Introduction to Community-Based Research

This article is a reflection on exploring pedagogical strategies to develop and design content for a new course, SOC3020 Introduction to Community-Based Research (CBR). Content includes interdisciplinary discussion on CBR, reflections on undergraduate research, and considerations for teaching CBR to undergraduate Sociology majors

Perancangan Interior Honda CBR Club Surabaya

Interior design of Honda CBR Club Surabaya is a public building that has a facility as a gathering place for fans and visitors, especially Honda CBR brand. This design aims to provide facilities to the fans and community about information around Honda CBR product derived from the Japanese domestic. The main facility of this Club is the Club Bar and café, and supporting facilities including exhibition space, detailing, workshop, etc