BU Physics Web Notes Library Interface

Essential Instructions:

• Click menu buttons to select desired info (1-4); punch pertinent submit button to retrieve.
• Do Search with empty associated text field to retrieve default info or more options.

More hints on how to use the LibraryInterface

Publication Level and Physics Group

The publication field is determinant for the search results. Documents are published in one of the 3 levels :

• public (anybody can access),
• private to BU (only BU registered users can access),
• group private (only BU registered users belonging to the physics group can access).

Therefore :

A non registered user can search/retrieve the public documents.

A registered user, after s/he authenticates can search/retrieve all the documents "private to BU only" and the private documents of the groups s/he belongs to.

To access the documents private to their group, the user must select the physics group. Users belonging to more than one group can search only one group at a time.

A document is only of one level of publication : Documents that are BU-private or group-private are not retrieved when the user asks for the public documents. Documents that are group-private are not retrieved when the user asks for the BU-private documents, etc.

Glossary

• new abstracts -- the last week's publications. This search also gives you the full abstract.
• recent -- the last month's publications

Search Pattern

The Search Pattern is a regular expression, which is similar to the paterns used by the Unix utilities grep and sed. The pattern sequences you can use are shown in the table below:

Sequence	Meaning
^	Match the beginning of the string
$	Match the end of the string
.	Match any single character, including new line
[...]	Matches any character appearing between the brackets
[^...]	Matches any character not appearing between the brackets
e*	Matches zero or more instances of pattern element e
e+	Matches one or more instances of pattern element e
e?	Matches zero or one instances of pattern element e
e1|e2	Match pattern element e1 or e2
e{m}	Match m instances of pattern element e
e{m,}	Match m or more instances of pattern element e
e{,n}	Match zero to n instances of pattern element e
e{m,n}	Match m to n instances of pattern element e
(...)	Group pattern elements into a single element
other	Non-special characters match themselves

Metacharacters

The characters: ^,$,.,*,+,{,},|,(,),' have to be backslashed if they are part of the searching text