I have the following:
Is it a good Idea to merge the
Iss. 1 number in [6] to 76(1)
(such that is is more consistent with [7]) or is that no good citation style?
So I like to replace the number with the issue if and only if there is no number defined? Is that possible?
With the following setting:
\usepackage[
backend=biber,
%citestyle = alphabetic,
%bibstyle = ieee-alphabetic,
sortlocale=en_US,
sorting=nyt,
backref=true,
hyperref=true,
firstinits=true,
style=numeric,%style=alphabetic,
defernumbers=true,
isbn=false,
%eid=true,
doi=true,
%series=true,
eprint=false,
bibencoding = utf8
]{biblatex}
\renewcommand*{\mkbibnamefirst}[1]{\textsc{#1}}
\renewcommand*{\mkbibnamelast}[1]{\textsc{#1}}
\renewcommand*{\mkbibnameprefix}[1]{\textsc{#1}}
\renewcommand*{\mkbibnameaffix}[1]{\textsc{#1}}
\DeclareFieldFormat{eid}{Art.\addnbspace#1}
\DeclareFieldFormat{issue}{Iss.\addnbspace#1}
\DeclareFieldFormat{volume}{Vol.\addnbspace#1}
\DeclareFieldFormat[article]{number}{\mkbibparens{#1}}
\AtEveryBibitem{%
\ifentrytype{article}{%
\clearfield{month}%
\clearfield{day}%+
}{%
}%
}
% http://tex.stackexchange.com/questions/154864/biblatex-use-doi-only-if-there-is-no-url
% only URL if no DOI otherwise DOI
\renewbibmacro*{doi+eprint+url}{%
\iftoggle{bbx:doi}
{\printfield{doi}}
{}%
\newunit\newblock
\iftoggle{bbx:eprint}
{\usebibmacro{eprint}}
{}%
\newunit\newblock
\iftoggle{bbx:url}
{\iffieldundef{doi}{\usebibmacro{url+urldate}}{}}
{}}
\renewbibmacro*{publisher+location+date}{%
\printlist{publisher}%
\setunit*{\addcomma\space}%
\printlist{location}%
\setunit*{\addcomma\space}%
\usebibmacro{date}%
\newunit
}
\renewbibmacro*{institution+location+date}{%
\printlist{institution}%
\setunit*{\addcomma\space}%
\printlist{location}%
\setunit*{\addcomma\space}%
\usebibmacro{date}%
\newunit
}
\renewbibmacro*{organization+location+date}{%
\printlist{institution}%
\setunit*{\addcomma\space}%
\printlist{location}%
\setunit*{\addcomma\space}%
\usebibmacro{date}%
\newunit
}
% makes volume of journal bold and adds colon
\DeclareFieldFormat[article]{volume}{\textbf{#1}}

biblatex-speak theissueis used for "Summer"/"Spring" etc. designations instead of numbers (for which we should usenumber). So you should probably make your.bibfile conform to this rule. You can of course let Biber do that for you if you want. – moewe Jan 18 '16 at 10:17