diff --git a/application/default/controllers/IndexController.php b/application/default/controllers/IndexController.php
index aa86cdb5..87d2d461 100755
--- a/application/default/controllers/IndexController.php
+++ b/application/default/controllers/IndexController.php
@@ -12,11 +12,6 @@ class IndexController extends Zend_Controller_Action
  
     function indexAction()
     {
-    	//数据通讯
-		$l=new mydir($this->view->config->paths->newsletter,"newsletter_*.pdf");	
-		$this->view->newsletter=$l->getLast();
-		$name=basename($this->view->newsletter,'.pdf');
-		list(,$this->view->newsletterno)=explode("_",$name);
 		//统计数据
 		$sql='select (select count(*) from users) as usernum,(select count(*) from heihemetadata) as metanum,(select count(*) from offlineapp where ts_approved is not null ) as offlinenum';
 		$row=$this->db->fetchRow($sql);
@@ -38,9 +33,6 @@ class IndexController extends Zend_Controller_Action
 		//特色推荐
 		$sql="select * from datafeature order by id desc";
 		$this->view->feature=$this->db->fetchRow($sql);
-		//特色数据集
-		$sql="select * from datasetcd order by random()";
-		$this->view->datasetcd=$this->db->fetchRow($sql);
 		//下载最多数据(top 5)
 		$sql="select uuid,title,id from heihemetadata where id in (select m.id from heihemetadata m left join dataorder d on m.uuid=d.uuid where m.datatype=0 group by m.id order by count(d.uuid) desc limit 5)";
 		$this->db->setFetchMode(Zend_Db::FETCH_OBJ);
@@ -85,7 +77,7 @@ class IndexController extends Zend_Controller_Action
 		
 		$this->view->list_news = $rows;
 	    
-		$sql="select d.*,m.ts_published as publish_year from datadoi d right join heihemetadata m on d.uuid=m.uuid where d.ts_published is not null order by ts_published desc limit 4";
+		$sql="select d.*,m.ts_published as publish_year from datadoi d right join heihemetadata m on d.uuid=m.uuid where length(d.title)>1 and d.ts_published is not null order by ts_published desc limit 4";
 		$sth = $this->db->query($sql);
 		$this->view->dois = $sth->fetchAll();