diff --git a/_pages/about.md b/_pages/about.md
index fabba72..d60fe30 100644
--- a/_pages/about.md
+++ b/_pages/about.md
@@ -1,8 +1,8 @@
 ---
 layout: about
-title: about
+title: About
 permalink: /
-subtitle: <a href='#'>Affiliations</a>. Address. Contacts. Moto. Etc.
+# subtitle: <a href='#'>Affiliations</a>. Address. Contacts. Moto. Etc.
 
 profile:
   align: right
diff --git a/_pages/publications.md b/_pages/publications.md
index 5c6d210..3371ffe 100644
--- a/_pages/publications.md
+++ b/_pages/publications.md
@@ -1,7 +1,7 @@
 ---
 layout: page
 permalink: /publications/
-title: publications
+title: Publications
 description: publications by categories in reversed chronological order. generated by jekyll-scholar.
 nav: true
 nav_order: 1
diff --git a/assets/img/prof_pic.jpg b/assets/img/prof_pic.jpg
index 9032ed2..9e3047d 100644
Binary files a/assets/img/prof_pic.jpg and b/assets/img/prof_pic.jpg differ
diff --git a/assets/img/prof_pic2.jpg b/assets/img/prof_pic2.jpg
new file mode 100644
index 0000000..9032ed2
Binary files /dev/null and b/assets/img/prof_pic2.jpg differ