3 research outputs found

    The networked handling of rush orders in customer services

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    Rush orders are characterised by time constraints and organisational priority. They are handled by the supplier with the aim of meeting customer requirements in as limited a timeframe as possible. Rather than focusing on rush orders as a deterministic planning problem, this paper takes an inter-organisational perspective that highlights the complex networked interactions between the supplier and the customers. In this single case study of an advanced sanitary product supplier, rush orders involve process prioritisation concerning both: (i) supplies of in-stock parts that are delivered with pre-set time objectives; and (ii) parts not in stock that must be quickly fabricated. This supply process is highly emergent, in that unexpected events or properties occur. This study considers the difficulties of determining and dealing with root causes, unexpected effects, and interventive solutions for rush orders. This operational level of analysis provides a foundation for advocating the application of complex systems thinking to solve or at least significantly mitigate the problem of rush orders. It also contributes to and advances further research on this subject

    Analysis of rush orders: a case study of Jets Vacuum AS

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    Confidential until 15. May 201

    A consistent neuro-fuzzy inference system

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    Π’Π΅Π»ΠΈΠΊΠΈ Π±Ρ€ΠΎΡ˜ Π°ΡƒΡ‚ΠΎΡ€Π° сматра Π΄Π° Π²Π΅Π»ΠΈΠΊΠ΅ могућности СкспСртских систСма Π»Π΅ΠΆΠ΅ Ρƒ Ρ…ΠΈΠ±Ρ€ΠΈΠ΄Π½ΠΈΠΌ ΠΌΠΎΠ΄Π΅Π»ΠΈΠΌΠ°, ΡˆΡ‚ΠΎ су ΠΎΠ²ΠΈ систСми ΠΈ Π΄ΠΎΠΊΠ°Π·Π°Π»ΠΈ Ρƒ пракси. ΠœΠΎΡ‚ΠΈΠ²ΠΈΡΠ°Π½ Ρ‚ΠΈΠΌΠ΅, ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½ΠΈ ΠΌΠΎΠ΄Π΅Π» систСма Ρƒ основи прСдставља ΠΈΠ½Ρ‚Π΅Π³Ρ€Π°Ρ†ΠΈΡ˜Ρƒ нСуронских ΠΌΡ€Π΅ΠΆΠ° ΠΈ Ρ„Π°Π·ΠΈ систСма, Ρ‡ΠΈΠΌΠ΅ сС Π±ΠΎΡ™Π΅ користС Π΄ΠΎΠ±Ρ€Π΅ странС ΠΎΠ±Π° приступа. Полазна основа ΠΎΠ²ΠΎΠ³ Ρ€Π°Π΄Π° јС Π΄Π° понашањС систСма, ΠΊΡ€ΠΎΠ· скуп лингвистичких ΠΏΡ€Π°Π²ΠΈΠ»Π°, Ρ‚Ρ€Π΅Π±Π° Π΄Π° ΠΎΠΏΠΈΡΡƒΡ˜Ρƒ ΡƒΠΏΡ€Π°Π²ΠΎ ΠΎΠ½ΠΈ који систСм највишС ΠΏΠΎΠ·Π½Π°Ρ˜Ρƒ ΠΈ Ρ€Π°Π·ΡƒΠΌΠ΅Ρ˜Ρƒ (насупрот аутоматски гСнСрисаним ΠΏΡ€Π°Π²ΠΈΠ»ΠΈΠΌΠ° која су Π½Π°Ρ˜Ρ‡Π΅ΡˆΡ›Π΅ Ρ€ΠΎΠ³ΠΎΠ±Π°Ρ‚Π½Π° ΠΈ Π½Π΅Ρ€Π°Π·ΡƒΠΌΡ™ΠΈΠ²Π°). Π—Π½Π°ΡšΠ΅ СкспСрата ΠΈΠ· Π±ΠΈΠ»ΠΎ којС области Π»Π°ΠΊΠΎ сС ΠΌΠΎΠΆΠ΅ формулисати Π²Π΅Ρ€Π±Π°Π»Π½ΠΈΠΌ исказима, Π° Ρ‚Π΅ΠΎΡ€ΠΈΡ˜Π° Ρ„Π°Π·ΠΈ скупова ΠΈ Ρ„Π°Π·ΠΈ Π»ΠΎΠ³ΠΈΠΊΠ΅ ΠΎΠΌΠΎΠ³ΡƒΡ›Π°Π²Π° ΠΏΡ€Π΅Π²ΠΎΡ’Π΅ΡšΠ΅ ΠΎΠ²Π°ΠΊΠ²ΠΈΡ… исказа Ρƒ ΠΎΠ΄Π³ΠΎΠ²Π°Ρ€aΡ˜ΡƒΡ›Π΅ ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡ΠΊΠ΅ ΠΈΠ·Ρ€Π°Π·Π΅. ΠšΠ»Π°ΡΠΈΡ‡Π½Π° Ρ‚Π΅ΠΎΡ€ΠΈΡ˜Π° Ρ„Π°Π·ΠΈ скупова Π½Π΅ Π·Π°Π΄ΠΎΠ²ΠΎΡ™Π°Π²Π° свС Π‘ΡƒΠ»ΠΎΠ²Π΅ аксиомС. Из ΠΎΠ²ΠΎΠ³ Ρ€Π°Π·Π»ΠΎΠ³Π° Ρƒ Ρ€Π°Π΄Ρƒ јС ΠΏΡ€ΠΈΠΌΠ΅ΡšΠ΅Π½Π° конзистСнтна Ρ€Π΅Π°Π»Π½ΠΎ-врСдносна [0,1] Π»ΠΎΠ³ΠΈΠΊΠ°, која сС заснива Π½Π° ΠΈΠ½Ρ‚Π΅Ρ€ΠΏΠΎΠ»Π°Ρ‚ΠΈΠ²Π½ΠΎΡ˜ Π‘ΡƒΠ»ΠΎΠ²ΠΎΡ˜ Π°Π»Π³Π΅Π±Ρ€ΠΈ (Π˜Π‘Π). Π‘Π²Π°ΠΊΠ° Π»ΠΎΠ³ΠΈΡ‡ΠΊΠ° Ρ„ΡƒΠ½ΠΊΡ†ΠΈΡ˜Π° ΠΌΠΎΠΆΠ΅ сС Ρ˜Π΅Π΄Π½ΠΎΠ·Π½Π°Ρ‡Π½ΠΎ трансформисати Ρƒ ΠΎΠ΄Π³ΠΎΠ²Π°Ρ€Π°Ρ˜ΡƒΡ›ΠΈ Π³Π΅Π½Π΅Ρ€Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½ΠΈ Π‘ΡƒΠ»ΠΎΠ² ΠΏΠΎΠ»ΠΈΠ½ΠΎΠΌ (Π“Π‘ΠŸ) ΠΊΠΎΡ€ΠΈΡˆΡ›Π΅ΡšΠ΅ΠΌ Π˜Π‘Π ΠΏΡ€ΠΈ Ρ‡Π΅ΠΌΡƒ сС Ρ‡ΡƒΠ²Π°Ρ˜Ρƒ сви Π‘ΡƒΠ»ΠΎΠ²ΠΈ Π·Π°ΠΊΠΎΠ½ΠΈ. ΠžΠΏΡ€Π°Π²Π΄Π°Π½ΠΎΡΡ‚ ΠΊΠΎΡ€ΠΈΡˆΡ›Π΅ΡšΠ° конзистСнтног приступа Π½Π°Ρ˜ΠΏΡ€Π΅ јС илустрована Π½Π° ΠΏΡ€ΠΈΠΌΠ΅Ρ€Ρƒ конзистСнтног Ρ„Π°Π·ΠΈ систСма Π·Π°ΠΊΡ™ΡƒΡ‡ΠΈΠ²Π°ΡšΠ° (КЀИБ). Π‘Π²Ρ€Ρ…Π° ΠΏΡ€ΠΈΠΊΠ°Π·Π°Π½ΠΎΠ³ КЀИБ-Π° јС Π΄Π° ΠΏΡ€ΠΎΡ†Π΅Π½ΠΈ могућност Π΄Π° јС ΠΏΠ°Ρ†ΠΈΡ˜Π΅Π½Ρ‚ Π½Π° дијализи Ρ‚Ρ€Π±ΡƒΡˆΠ½Π΅ ΠΌΠ°Ρ€Π°ΠΌΠΈΡ†Π΅ (Π»Π°Ρ‚. peritoneum) ΠΎΠ±ΠΎΠ»Π΅ΠΎ ΠΎΠ΄ пСритонитиса. Π”ΠΎΠ±ΠΈΡ˜Π΅Π½ΠΈ Ρ€Π΅Π·ΡƒΠ»Ρ‚Π°Ρ‚ΠΈ ΡƒΠΊΠ°Π·ΡƒΡ˜Ρƒ Π½Π° Ρ‡ΠΈΡšΠ΅Π½ΠΈΡ†Ρƒ Π΄Π° класичан ЀИБ ΠΈ конзистСнтан приступ Π½Π΅ Π²ΠΎΠ΄Π΅ ΡƒΠ²Π΅ΠΊ ΠΊΠ° истим Ρ€Π΅Π·ΡƒΠ»Ρ‚Π°Ρ‚ΠΈΠΌΠ°, Π° Ρ€Π°Π·Π»ΠΈΠΊΠ° јС Π½Π°Ρ˜ΡƒΠΎΡ‡Ρ™ΠΈΠ²ΠΈΡ˜Π° ΠΊΠ°Π΄Π° ΠΏΡ€Π°Π²ΠΈΠ»Π° ΡƒΠΊΡ™ΡƒΡ‡ΡƒΡ˜Ρƒ Π½Π΅Π³Π°Ρ†ΠΈΡ˜Ρƒ. Како Π±ΠΈ сС КЀИБ Π΄Π°Ρ™Π΅ ΡƒΠ½Π°ΠΏΡ€Π΅Π΄ΠΈΠΎ, ΠΊΠΎΡ€ΠΈΡˆΡ›Π΅Π½Π° јС нСуронска ΠΌΡ€Π΅ΠΆΠ°, Ρ‚Ρ˜. њСн Π°Π»Π³ΠΎΡ€ΠΈΡ‚Π°ΠΌ ΡƒΡ‡Π΅ΡšΠ°, који, Π½Π° основу скупа ΡƒΠ»Π°Π·Π½ΠΎ-ΠΈΠ·Π»Π°Π·Π½ΠΈΡ… ΠΏΠΎΠ΄Π°Ρ‚Π°ΠΊΠ°, подСшава ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Π΅ Ρ‚Π°ΠΊΠΎ Π΄Π° вишС ΠΎΠ΄Π³ΠΎΠ²Π°Ρ€Π°Ρ˜Ρƒ Ρ€Π΅Π°Π»Π½ΠΎΠΌ систСму. На Ρ‚Π°Ρ˜ Π½Π°Ρ‡ΠΈΠ½, ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½ΠΈ конзистСнтан Π½Π΅ΡƒΡ€ΠΎ-Ρ„Π°Π·ΠΈ систСм (КНЀИБ) користи знањС садрТано Ρƒ ΠΏΠΎΠ΄Π°Ρ†ΠΈΠΌΠ° ΠΈ ΡƒΠ½Π°ΠΏΡ€Π΅Ρ’ΡƒΡ˜Π΅ Π·Π°ΠΊΡ™ΡƒΡ‡ΠΈΠ²Π°ΡšΠ΅. Π’Π°ΠΊΠΎΡ’Π΅, СлиминишС сС ΡΡƒΠ±Ρ˜Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ ΠΊΠΎΡ˜Ρƒ СкспСрти Ρƒ нСкој ΠΌΠ΅Ρ€ΠΈ ΠΈΠ·Ρ€Π°ΠΆΠ°Π²Π°Ρ˜Ρƒ ΠΏΡ€ΠΈΠ»ΠΈΠΊΠΎΠΌ Π΄Π΅Ρ„ΠΈΠ½ΠΈΡΠ°ΡšΠ° ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Π°Ρ€Π° систСма...A number of authors find that the greatest potential of expert systems lies in hybrid models, and such models have proven this viewpoint in practice.Therein lies the motivation for introducing a new system model, integrating neural networks and fuzzy systems, thus building on the best features of each of these approaches. The main premise of this thesis is that the behavior of a system should be described, through a set of linguistic rules, by those who know and understand the system the best (as opposed to the automatic generation of rules that are often cumbersome and incomprehensible). Expert knowledge in any domain can be easily expressed in the form of verbal statements, and fuzzy set theory and fuzzy logic enable the transformation of such verbal statements into mathematical expressions. Conventional fuzzy set theory does not satisfy all Boolean axioms. For this reason, the consistent real-valued [0,1] logic, based on the Interpolative realization of Boolean algebra (IBA), is applied in this thesis. Any logical function can be uniquely transformed into a corresponding generalized Boolean polynomial (GBP) using IBA thereby preserving all Boolean laws. The justification for using a consistent approach is first illustrated on an example of a consistent fuzzy inference system (CFIS). The purpose of the described CFIS is to estimate the likelihood that a patient undergoing peritoneal dialysis, has peritonitis. The obtained results demonstrate that conventional FIS and the Boolean consistent approach do not always lead to the same results, and this discrepancy is most pronounced when the established rules include negations. In order to further enhance CFIS a neural network, or, more precisely, its learning algorithm, is used to fine-tune the parameters, in accordance with a set of input-output data, so that the parameters better suit the real system. Consequently, the proposed consistent neuro-fuzzy system (CNFIS) uses the knowledge contained in the data to improve the inference process. In addition, it eliminates the subjectivity incorporated into the system by experts when defining the parameters of the system..
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