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Proceedings in pdf format. - Sociotechnical Systems Engineering ...

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are handed over to the objects and system components,the wider the scope of delegated decision-power andresponsibility for the entire process and the bigger thepart of self-determ<strong>in</strong>ed activities are. In the end, selfcontroll<strong>in</strong>gprocess solutions can occur.Self-control of logistics systems as process runn<strong>in</strong>gparadigmThe term self-control describes decentralizeddecision-mak<strong>in</strong>g processes <strong>in</strong> heterarchic structures. Forthis, <strong>in</strong>teract<strong>in</strong>g elements of unpredictable systems needto have the ability and possibility to autonomously makedecisions. Follow<strong>in</strong>g Scholz-Reiter et al. (2005) selfcontroll<strong>in</strong>g<strong>in</strong> logistics aims at cop<strong>in</strong>g with the dynamicand structural complexity of horizontal and vertical cooperationsbetween companies without provid<strong>in</strong>g all<strong>in</strong><strong>format</strong>ion relevant for mak<strong>in</strong>g decisions to a central<strong>in</strong>stance. This would be the case if the logistics objectitself carries out <strong>in</strong><strong>format</strong>ion process<strong>in</strong>g, decisionmak<strong>in</strong>g,and execution.Here, the term decision-mak<strong>in</strong>g covers the entireprocess from trigger<strong>in</strong>g the decision-mak<strong>in</strong>g process viaidentify<strong>in</strong>g and evaluat<strong>in</strong>g options for decid<strong>in</strong>g toimplement<strong>in</strong>g and controll<strong>in</strong>g the chosen decisionalternative. In<strong>format</strong>ion process<strong>in</strong>g <strong>in</strong>cludes all activitiesfor record<strong>in</strong>g, stor<strong>in</strong>g, transform<strong>in</strong>g, and transmitt<strong>in</strong>g<strong>in</strong><strong>format</strong>ion. F<strong>in</strong>ally, execution of a decision is directedtowards implement<strong>in</strong>g the decision made at the materialflow layer. In comparison to the typical heteronomouscontrol of today with decisions f<strong>in</strong>ally made by highercontrol and management layers implementation ofapproaches for self-control is expected to reduce thenumber of <strong>in</strong>stances <strong>in</strong>volved <strong>in</strong> a decision process and atthe same time also the volume of <strong>in</strong><strong>format</strong>ion flowsrequired for communication between these differentlayers. In the end, this should help to make certa<strong>in</strong>process-related decisions faster, more flexible and thoughmore efficient.As previously already discussed, logistics objects canonly decide out of their local po<strong>in</strong>t of view and withfocus on their <strong>in</strong>dividual objectives. This is appropriate,for example, when search<strong>in</strong>g for the best route at across<strong>in</strong>g tak<strong>in</strong>g the process, its current situation, and theobject’s target <strong>in</strong>to consideration. However, to achieve aglobal optimum for the process as a whole controldecisions are to be taken from a foresighted globalperspective repeatedly that affects both <strong>in</strong>dividual or agroup of resources and their <strong>in</strong>fluence on the process aswell as several objects and their future lives. Here, thequestion is to be asked for limitations of such a localview and from when a global perspective would be betteror even necessary <strong>in</strong>stead. Additional, it is worth to<strong>in</strong>vestigate if self-control is really the better option thanheteronomous control with regard to the achievableprocess performance and the guaranteed process security<strong>in</strong> general or for particular types of logistics processes.Perhaps, similar effects could eventually be achievedwith<strong>in</strong> traditional control and management architecturesas well through the improvement of material flowtrack<strong>in</strong>g and trac<strong>in</strong>g by use of RFID?When talk<strong>in</strong>g about the paradigm of self-control, acontrol solution’s capability for self-learn<strong>in</strong>g has to bediscussed as well. An <strong>in</strong>telligent object decidesautonomously. From observ<strong>in</strong>g the effects of those cleveror not so clever decisions, the latter ones eventually evenbe<strong>in</strong>g revised or modified, it could ga<strong>in</strong> experience as<strong>in</strong>put for an <strong>in</strong>dividual learn<strong>in</strong>g process to improve theown decision-mak<strong>in</strong>g competence. Pre-condition wouldbe a suitable design of the implemented controlfunctionality, e.g. by use of neuronal networks, to be ableto make use if those experience <strong>in</strong> future decisionmak<strong>in</strong>gprocesses.Certa<strong>in</strong>ly, adaptive control algorithms result<strong>in</strong>g fromsuch learn<strong>in</strong>g curves are exclusively l<strong>in</strong>ked to the objectitself and would get lost as soon as this object leaves thesystem. To let further objects benefit from thoseexperience-based adaptations of the control algorithm aswell, they need to be either shared between the objects orforwarded to a (central) coord<strong>in</strong>at<strong>in</strong>g <strong>in</strong>stance. Due to theobviously exist<strong>in</strong>g analogies to the problems <strong>in</strong>knowledge explication and shar<strong>in</strong>g with human be<strong>in</strong>gs, itwould seem to be useful to <strong>in</strong>vestigate respectiveapproaches and methods from knowledge managementfor their applicability to keep object “knowledge” aswell.Process autonomy and process complexityIf <strong>in</strong>telligent objects are able to act self-determ<strong>in</strong>ed,new chances open up for autonomous processes, i.e.those processes <strong>in</strong> which object trans<strong>format</strong>ions largelyare realized without any <strong>in</strong>teraction with other processesor higher control and management layers. Scholz-Reiteret al. (2005), for example, describe a robot system fordistribution logistics, which is equipped with <strong>in</strong>telligentidentification, sensor and location technologies to form abasic component for self-controll<strong>in</strong>g logistics processes:A package with transponder does not know just its ownidentification, but further logistics data, such as itsdest<strong>in</strong>ation, too. By use of a reader an unload<strong>in</strong>g robot,for example, recognizes these data and transform them<strong>in</strong>to respective actions, such as local movement ordistribution. With this, the <strong>in</strong>telligent package controls itsown distribution lead<strong>in</strong>g to an autonomous process witha clearly separated mode of action, i.e. with clearlydef<strong>in</strong>ed <strong>in</strong>terfaces to other processes and as few aspossible <strong>in</strong><strong>format</strong>ion exchange relations with them. Here,the object’s level of <strong>in</strong>telligence determ<strong>in</strong>es its autonomyand the process’ level of self-control. The level of selfcontroldecisively depends on the studied logisticssystem, even if any logistics process will always be <strong>in</strong> thesame l<strong>in</strong>es as given by the central circumstances.Consequently, it can be expected that the frequentlyquoted paradigm shift from heteronomous control to selfcontrol<strong>in</strong> logistics practice will more likely appear as aAnnual <strong>Proceed<strong>in</strong>gs</strong> of Vidzeme University College “ICTE <strong>in</strong> Regional Development”, 200657

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