行业专家 -米乐体育官方

院长

长期从事自动检测监控技术、旱作节水农业技术与设备、精细农业、计算机在农业工程中应用的教学与研究工作。1984至1985年在英国留学期间主要从事"磨削自适应控制研究在线测量尺寸和圆度误差"的研究，完成了"计算机磨削自适应控制在线测量尺寸和圆度"的研究论文，研究结果为实现在线测量圆度误差的自动补偿提供了依据，专家评定研究成果具有国际先进水平。回国后致力于把工业生产中应用较成熟的计算机监控、图像处理与模式识别、人工智能与专家系统等技术应用于农业工程中的研究，作为培养研究生的主要方向。目前在研究生培养专业方向"精细农业"及"智能化检测与控制"方面，立足于将精细农业与旱作节水农业相结合，重点研究精细农业的关键技术及其应用，研制开发适于中国国情、智能化的旱作农业装备。

西北农林科技大学

freemarker template error (debug mode; use rethrow in production!): the following has evaluated to null or missing: ==> c.admheadship [in template "web-inf/t/cms/www/xatrm/techexpert/detail.html" at line 174, column 47] ---- tip: it's the step after the last dot that caused this error, not those before it. ---- tip: if the failing expression is known to be legally refer to something that's sometimes null or missing, either specify a default value like myoptionalvar!mydefault, or use [#if myoptionalvar??]when-present[#else]when-missing[/#if]. (these only cover the last step of the expression; to cover the whole expression, use parenthesis: (myoptionalvar.foo)!mydefault, (myoptionalvar.foo)?? ---- ---- ftl stack trace ("~" means nesting-related): - failed at: ${c.admheadship} [in template "web-inf/t/cms/www/xatrm/techexpert/detail.html" at line 174, column 45] ---- java stack trace (for programmers): ---- freemarker.core.invalidreferenceexception: [... exception message was already printed; see it above ...] at freemarker.core.invalidreferenceexception.getinstance(invalidreferenceexception.java:134) at freemarker.core.evalutil.coercemodeltotextualcommon(evalutil.java:451) at freemarker.core.evalutil.coercemodeltostringormarkup(evalutil.java:374) at freemarker.core.dollarvariable.calculateinterpolatedstringormarkup(dollarvariable.java:96) at freemarker.core.dollarvariable.accept(dollarvariable.java:59) at freemarker.core.environment.visit(environment.java:362) at freemarker.core.iteratorblock$iterationcontext.executenestedcontent(iteratorblock.java:263) at freemarker.core.iteratorblock$iterationcontext.accept(iteratorblock.java:200) at freemarker.core.environment.visititeratorblock(environment.java:595) at freemarker.core.iteratorblock.acceptwithresult(iteratorblock.java:81) at freemarker.core.iteratorblock.accept(iteratorblock.java:67) at freemarker.core.environment.visit(environment.java:326) at freemarker.core.environment.visit(environment.java:332) at freemarker.core.environment.process(environment.java:305) at freemarker.template.template.process(template.java:384) at com.xatrm.common.web.springmvc.simplefreemarkerview.rendermergedtemplatemodel(simplefreemarkerview.java:114) at org.springframework.web.servlet.view.abstracttemplateview.rendermergedoutputmodel(abstracttemplateview.java:167) at org.springframework.web.servlet.view.abstractview.render(abstractview.java:303) at org.springframework.web.servlet.dispatcherservlet.render(dispatcherservlet.java:1257) at org.springframework.web.servlet.dispatcherservlet.processdispatchresult(dispatcherservlet.java:1037) at org.springframework.web.servlet.dispatcherservlet.dodispatch(dispatcherservlet.java:980) at org.springframework.web.servlet.dispatcherservlet.doservice(dispatcherservlet.java:897) at org.springframework.web.servlet.frameworkservlet.processrequest(frameworkservlet.java:970) at org.springframework.web.servlet.frameworkservlet.doget(frameworkservlet.java:861) at javax.servlet.http.httpservlet.service(httpservlet.java:622) at org.springframework.web.servlet.frameworkservlet.service(frameworkservlet.java:846) at javax.servlet.http.httpservlet.service(httpservlet.java:729) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:230) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:52) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:192) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at org.jasig.cas.client.session.singlesignoutfilter.dofilter(singlesignoutfilter.java:76) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:192) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at ci.filter.sqlinjectfilter.dofilter(sqlinjectfilter.java:157) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:192) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at ci.filter.xssfilter.dofilter(xssfilter.java:96) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:192) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at ci.filter.securityfilter.dofilter(securityfilter.java:25) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:192) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at com.xatrm.common.web.xssfilter.dofilter(xssfilter.java:40) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:192) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at org.apache.shiro.web.servlet.abstractshirofilter.executechain(abstractshirofilter.java:449) at org.apache.shiro.web.servlet.abstractshirofilter$1.call(abstractshirofilter.java:365) at org.apache.shiro.subject.support.subjectcallable.docall(subjectcallable.java:90) at org.apache.shiro.subject.support.subjectcallable.call(subjectcallable.java:83) at org.apache.shiro.subject.support.delegatingsubject.execute(delegatingsubject.java:383) at org.apache.shiro.web.servlet.abstractshirofilter.dofilterinternal(abstractshirofilter.java:362) at org.apache.shiro.web.servlet.onceperrequestfilter.dofilter(onceperrequestfilter.java:125) at org.springframework.web.filter.delegatingfilterproxy.invokedelegate(delegatingfilterproxy.java:346) at org.springframework.web.filter.delegatingfilterproxy.dofilter(delegatingfilterproxy.java:262) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:192) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at org.springframework.orm.hibernate4.support.opensessioninviewfilter.dofilterinternal(opensessioninviewfilter.java:151) at org.springframework.web.filter.onceperrequestfilter.dofilter(onceperrequestfilter.java:107) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:192) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at org.springframework.web.filter.characterencodingfilter.dofilterinternal(characterencodingfilter.java:197) at org.springframework.web.filter.onceperrequestfilter.dofilter(onceperrequestfilter.java:107) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:192) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at com.xatrm.common.web.processtimefilter.dofilter(processtimefilter.java:35) at org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:192) at org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:165) at org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:198) at org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:108) at org.apache.catalina.authenticator.authenticatorbase.invoke(authenticatorbase.java:472) at org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:140) at org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:79) at org.apache.catalina.valves.abstractaccesslogvalve.invoke(abstractaccesslogvalve.java:620) at org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:87) at org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:349) at org.apache.coyote.http11.http11processor.service(http11processor.java:783) at org.apache.coyote.abstractprocessorlight.process(abstractprocessorlight.java:66) at org.apache.coyote.abstractprotocol$connectionhandler.process(abstractprotocol.java:789) at org.apache.tomcat.util.net.nioendpoint$socketprocessor.dorun(nioendpoint.java:1455) at org.apache.tomcat.util.net.socketprocessorbase.run(socketprocessorbase.java:49) at java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1142) at java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:617) at org.apache.tomcat.util.threads.taskthread$wrappingrunnable.run(taskthread.java:61) at java.lang.thread.run(thread.java:745)