Viele Experten erwarteten zu Beginn dieses Jahrtausends die baldige Markteinführung der Brennstoffzellentechnologie in den Anwendungsfeldern (Auto-)Mobilität und Gebäudeenergieversorgung. Die prinzipiellen Vorteile und der ökologische Nutzen der Technologie fanden breite Zustimmung, die noch bestehenden technischen Probleme und die nicht marktfähigen Kosten seien, so die vorherrschende Meinung, in wenigen Jahren lösbar. In dieser Phase beginnender Euphorie begannen auch Akteure der beruflichen Bildung zunehmend Interesse an der Technologie zu entwickeln und begannen qualifikationsbezogene Fragen zu diskutieren. Seither wurde kontinuierlich an der Weiterentwicklung und Verbesserung der Brennstoffzellen-Anwendungen gearbeitet. Mit Callux, dem im Jahr 2008 gestarteten größten Feldtest für Brennstoffzellen-Heizgeräte ist die Markteinführung im Bereich der Gebäudeenergieversorgung in greifbare Nähe gerückt. Ankündigungen für den Markteintritt von BZH ab 2013 liegen vor. Darüber hinaus sprechen auch einige Automobilhersteller von Serienfertigungsstarts 2014/2015. Aus Sicht der beruflichen Bildung sind die Prozesse rund um die Innovation BZH so spannend wie lehrreich: Aufgrund der spezifischen Rahmenbedingungen im Feld kommt den Aufgaben im Bereich der Information und Qualifizierung von Handwerkern, Beratern, Planern etc. eine hohe Bedeutung für die Markteinführung und -diffusion zu. Wie sich zeigt, fungieren Akteure und Institutionen der beruflichen Bildung, etwa im Rahmen marktvorbereitender Projekte, als Kommunikationsschnittstellen, Übersetzer und Multiplikatoren zwischen Herstellern, Energieversorgern, Handwerk, Qualifizierungsanbietern und anderen Interessengruppen. Erforderlich wäre demzufolge eine systematische Kopplung des technisch-ökonomischen Innovationsmanagements mit Aktivitäten der beruflichen Bildung. Der Beitrag stellt darauf ab, zentrale Elemente der bisherigen Entwicklung sowie den aktuellen Arbeitsstand berufspädagogischer Aktivitäten darzustellen und einer kritischen Diskussion zugänglich zu machen.
in
Schwenger, Ulrich; Vollmer, Thomas; Hartmann, Martin; Reichwein, Wilko (Hrsg.)
(2011):Kompetenzen und Karrierewege in elektrotechnischen und metalltechnischen Berufen: FT08 - Elektrotechnik-Informatik & Metalltechnik: Hochschultage Berufliche Bildung 2011,
FreeMarker template error (DEBUG mode; use RETHROW in production!):
For "+" left-hand operand: Expected a string or something automatically convertible to string (number, date or boolean), or "template output" , but this has evaluated to a sequence+hash (wrapper: f.e.dom.NodeListModel):
==> Publisher.getPlace(publisher) [in template "templates/contentitems/list/collected-volume.html.ftl" at line 25, column 11]
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Tip: This XML query result can't be used as string because for that it had to contain exactly 1 XML node, but it contains 0 nodes. That is, the constructing XML query has found no matches.
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FTL stack trace ("~" means nesting-related):
- Failed at: ${Publisher.getPlace(publisher) + ": ... [in template "templates/contentitems/list/collected-volume.html.ftl" at line 25, column 9]
- Reached through: #include getContentItemTemplate(item[... [in template "ccm-cms/content-item.ftl" in macro "contentItem" at line 50, column 9]
- Reached through: @ContentItem.contentItem Publications... [in template "templates/contentitems/detail/scipublications.html.ftl" at line 95, column 25]
- Reached through: #include getContentItemTemplate(item[... [in template "ccm-cms/content-item.ftl" in macro "contentItem" at line 50, column 9]
- Reached through: @ContentItem.contentItem ContentItem... [in template "templates/default-layout.html.ftl" at line 9, column 13]
~ Reached through: #nested [in template "templates/UniHB2018.html.ftl" in macro "layout" at line 388, column 17]
~ Reached through: @UniHB2018.layout [in template "templates/default-layout.html.ftl" at line 5, column 1]
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Java stack trace (for programmers):
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freemarker.core.NonStringOrTemplateOutputException: [... Exception message was already printed; see it above ...]
at freemarker.core.EvalUtil.coerceModelToTextualCommon(EvalUtil.java:523)
at freemarker.core.EvalUtil.coerceModelToStringOrMarkup(EvalUtil.java:401)
at freemarker.core.AddConcatExpression._eval(AddConcatExpression.java:83)
at freemarker.core.AddConcatExpression._eval(AddConcatExpression.java:56)
at freemarker.core.Expression.eval(Expression.java:101)
at freemarker.core.AddConcatExpression._eval(AddConcatExpression.java:56)
at freemarker.core.Expression.eval(Expression.java:101)
at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:100)
at freemarker.core.DollarVariable.accept(DollarVariable.java:63)
at freemarker.core.Environment.visit(Environment.java:331)
at freemarker.core.Environment.visit(Environment.java:337)
at freemarker.core.Environment.visit(Environment.java:337)
at freemarker.core.Environment.include(Environment.java:2694)
at freemarker.core.Include.accept(Include.java:171)
at freemarker.core.Environment.visit(Environment.java:331)
at freemarker.core.Environment.visit(Environment.java:373)
at freemarker.core.Environment.invokeMacroOrFunctionCommonPart(Environment.java:872)
at freemarker.core.Environment.invokeMacro(Environment.java:809)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:83)
at freemarker.core.Environment.visit(Environment.java:331)
at freemarker.core.Environment.visit(Environment.java:337)
at freemarker.core.Environment.visit(Environment.java:337)
at freemarker.core.Environment.include(Environment.java:2694)
at freemarker.core.Include.accept(Include.java:171)
at freemarker.core.Environment.visit(Environment.java:331)
at freemarker.core.Environment.visit(Environment.java:373)
at freemarker.core.Environment.invokeMacroOrFunctionCommonPart(Environment.java:872)
at freemarker.core.Environment.invokeMacro(Environment.java:809)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:83)
at freemarker.core.Environment.visit(Environment.java:367)
at freemarker.core.Environment.invokeNestedContent(Environment.java:619)
at freemarker.core.BodyInstruction.accept(BodyInstruction.java:60)
at freemarker.core.Environment.visit(Environment.java:367)
at freemarker.core.Environment.invokeMacroOrFunctionCommonPart(Environment.java:872)
at freemarker.core.Environment.invokeMacro(Environment.java:809)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:83)
at freemarker.core.Environment.visit(Environment.java:331)
at freemarker.core.Environment.visit(Environment.java:337)
at freemarker.core.Environment.process(Environment.java:310)
at freemarker.template.Template.process(Template.java:383)
at org.libreccm.theming.FreeMarkerPresentationManager.servePage(FreeMarkerPresentationManager.java:283)
at com.arsdigita.bebop.jsp.ShowAll.servePageWithPresentationManager(ShowAll.java:126)
at com.arsdigita.bebop.jsp.ShowAll.doEndTag(ShowAll.java:90)
at org.apache.jsp.templates.ccm_002dcms.content_002dsection.default_.aplaws_002ditem_jsp._jspx_meth_show_005fall_005f0(aplaws_002ditem_jsp.java:310)
at org.apache.jsp.templates.ccm_002dcms.content_002dsection.default_.aplaws_002ditem_jsp._jspService(aplaws_002ditem_jsp.java:278)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:71)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:477)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:742)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:484)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:337)
at com.arsdigita.dispatcher.DispatcherHelper.forwardHelper(DispatcherHelper.java:216)
at com.arsdigita.dispatcher.DispatcherHelper.forwardRequestByPath(DispatcherHelper.java:245)
at com.arsdigita.dispatcher.DispatcherHelper.forwardRequestByPath(DispatcherHelper.java:263)
at com.arsdigita.cms.dispatcher.ContentItemDispatcher$1.excurse(ContentItemDispatcher.java:116)
at com.arsdigita.cms.CMSExcursion$1.excurse(CMSExcursion.java:79)
at com.arsdigita.kernel.KernelExcursion.run(KernelExcursion.java:58)
at com.arsdigita.cms.CMSExcursion.run(CMSExcursion.java:86)
at com.arsdigita.cms.dispatcher.ContentItemDispatcher.dispatch(ContentItemDispatcher.java:119)
at com.arsdigita.cms.ContentSectionServlet.serveItem(ContentSectionServlet.java:538)
at com.arsdigita.cms.ContentSectionServlet.doService(ContentSectionServlet.java:428)
at com.arsdigita.web.BaseApplicationServlet$1.excurse(BaseApplicationServlet.java:131)
at com.arsdigita.kernel.KernelExcursion.run(KernelExcursion.java:58)
at com.arsdigita.web.BaseApplicationServlet.doService(BaseApplicationServlet.java:138)
at com.arsdigita.web.BaseServlet$1.excurse(BaseServlet.java:180)
at com.arsdigita.kernel.KernelExcursion.run(KernelExcursion.java:58)
at com.arsdigita.web.BaseServlet.internalService(BaseServlet.java:197)
at com.arsdigita.web.BaseServlet.doGet(BaseServlet.java:286)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:742)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:484)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:337)
at com.arsdigita.web.CCMDispatcherServlet.forward(CCMDispatcherServlet.java:377)
at com.arsdigita.web.CCMDispatcherServlet.forward(CCMDispatcherServlet.java:349)
at com.arsdigita.web.CCMDispatcherServlet.doService(CCMDispatcherServlet.java:261)
at com.arsdigita.web.BaseServlet$1.excurse(BaseServlet.java:180)
at com.arsdigita.kernel.KernelExcursion.run(KernelExcursion.java:58)
at com.arsdigita.web.BaseServlet.internalService(BaseServlet.java:197)
at com.arsdigita.web.BaseServlet.doGet(BaseServlet.java:286)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.arsdigita.shortcuts.ShortcutFilter.doService(ShortcutFilter.java:78)
at com.arsdigita.web.BaseFilter.doFilter(BaseFilter.java:121)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.arsdigita.subsite.SubsiteFilter.doService(SubsiteFilter.java:106)
at com.arsdigita.web.BaseFilter.doFilter(BaseFilter.java:121)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:165)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:190)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:654)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:317)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:750)
