Dear all,
i'm writing an english paper for an international conference.
The paper has to be formatted according to the organizer supplied  latex
style, which is called iemss.sty. I've installed it without any problem
running texhash.
My lyx document is a two column article class, while the abstract is
formatted on a single column, through a package available on Lyx site.
Problems:
*if a insert in my latex preamble the instruction
"\usepackage{iemss.sty}", Lyx doesn't compile the document.
*by trial and error (i'm not a latex master:(( )  I've found that Lyx
compiles if i set the options "fleqn" in Layout->Document->extra .
(I've tried this options since it is included in the provided tex
sample  file ).

However taking a look at the generated postscript:
*title, section styles are correct;
*i've got no more abstract (!!)
*although I set to 0 the skip between paragraphs, I get a  medskip
between each other.


Can someone help me?? thanks a lot in advance!!

I attach my lyx source, the provided style, and the provided tex sample.
-Giorgio Corani

Attachment: iemss.tex
Description: TeX document

%%%% iEMSs 2002 Stylesheet.
%%%%
%%%% Copy the iemss.sty file in the main latex file directory
%%%% The source of the LaTeX file should start with
%%%%
%%%% 1/ LaTeX2e:
%%%%      \documentclass[a4paper]{article}
%%%%      \usepackage{times}
%%%%      \usepackage{iemss}
%%%%
%%%% 2/ LaTeX:
%%%%      \documentstyle[a4paper,times]{article}
%%%%      \input{iemss}

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#LyX 1.1 created this file. For more info see http://www.lyx.org/
\lyxformat 218
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\begin_preamble

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\layout Standard


\latex latex 

\backslash 
date{}
\layout Title

A neural emission-receptor model for ozone reduction planning 
\layout Author

Giorgio Corani
\layout OneColAbstract

Ground level ozone pollution is a complex phenomenon heavily affecting industria
lized and populated areas.
 Ozone is produced by a series of photochemical reactions, activated by
 the emissions of nitrogen oxides and volatile organic compounds and may
 reach maximum concentrations at kilometers of distance form the precursors
 sources, depending on the meteorological conditions.
 Models to compute ozone concentrations are equally complex and cannot be
 directly used to optimize emission reduction policies.
 For this reason, a neural network has been trained on the results of a
 photochemical model (CALGRID) to represent the emission-receptor relationships
 in critical conditions.
 Such a network in then entered in an optimization problem that determines
 the least cost alternatives to obtain a given air quality standard.
 The decision variables of the problem are the emission reductions of ozone
 precursors in each industrial sector.
 These reductions are in turn the result of the application of a number
 of technologies, whose costs and performances are known.
 The approach has been used to estimate the optimal reduction alternatives
 for the Lombardia region in Northern Italy and showed that a consistent
 improvement of air quality can be attained with moderate investments, provided
 that they are concentrated in some sectors, such as industrial solvents,
 that have a major impact on ozone dynamics.
 (211 parole)
\layout Section

Introduction
\layout Standard

High ozone concentrations at the tropospehere level are a major concern
 in air pollution studies because of their impact on human health (Lippman,1993;
 Bascomb et al., 1996) and agricultural crops and forests (Loibl and Smidt,
 1996; Hogsett et al., 1997).
 Elevated ozone has been observed since the 1970s in the United States and
 in Europe (Guicherit et al., 1977); since high temperatures result in a
 much quicker ozone formation, cities with warm climates experience usually
 the most important ozone problems, as observed for Athens (Giovannoni et
 al., 1995; Moussiopoulos et al., 1997) and Milan (Prevot et al., 1997, Silibello
 et al., 1998).
 In particular Lombardy region, located in Northern Italy, experiences heavy
 photochemical pollution during the summer season.
\layout Standard

In order to be effective in the ozone concentration lowering, control policies
 should be focused on ozone precursors reduction, i.e.
 
\begin_inset Formula \( NO_{x} \)
\end_inset 

 and volatile organic compounds 
\begin_inset Formula \( (VOC) \)
\end_inset 

.
 As well known, ozone formation is controlled either from 
\begin_inset Formula \( NO_{x} \)
\end_inset 

 or 
\begin_inset Formula \( VOC \)
\end_inset 

, depending on the ratio between their concentrations: when 
\begin_inset Formula \( NO_{x}/VOC \)
\end_inset 

 is 
\begin_inset Quotes eld
\end_inset 

low
\begin_inset Quotes erd
\end_inset 

, the rate of ozone formation increases with 
\begin_inset Formula \( NO_{x} \)
\end_inset 

 and changes due to increased 
\emph on 
VOC 
\emph default 
are negligible (
\begin_inset Formula \( NO_{x}-sensitive \)
\end_inset 

 regime).
 Further increases of 
\begin_inset Formula \( NO_{x} \)
\end_inset 

 result in a slower increase rate of ozone; at higher ratio levels, ozone
 rate decreases increasing 
\begin_inset Formula \( NO_{x} \)
\end_inset 

 and increases increasing 
\begin_inset Formula \( VOC \)
\end_inset 

 (
\emph on 
VOC-limited 
\emph default 
or 
\begin_inset Formula \( NO_{x}-saturated \)
\end_inset 

 regime).
 Hence, chemical sensitivity analysis plays a key role in developing successfull
y ozone reduction policies: as an example, 
\begin_inset Formula \( NO_{x} \)
\end_inset 

 reductions will be effective only in 
\begin_inset Formula \( NO_{x}-sensitive \)
\end_inset 

 regimes.
\layout Standard

According to the 
\emph on 
CORINAIR 
\emph default 
classification, emission sources can be grouped in 11 sectors
\begin_float footnote 
\layout Standard


\emph on 
CORINAIR 
\emph default 
emission sectors are precisely: 
\layout Enumerate

Combustion in energy and transformation industries
\layout Enumerate

Non-industrial combustion plants
\layout Enumerate

Combustion in manufacturing industry
\layout Enumerate

Production processes without combustion
\layout Enumerate

Extraction and distribution of fossil fuels / geothermal energy
\layout Enumerate

Solvent and other product use
\layout Enumerate

Road transport
\layout Enumerate

Other mobile sources and machinery (off road transports)
\layout Enumerate

Waste treatment and disposal
\layout Enumerate

Agriculture and forestry, land use and wood stock change
\layout Enumerate

Nature
\end_float 
; the policy design has hence to take into account that precursors emission
 reduction will have different costs depending on the considered emission
 sector.
 An evaluation of the marginal costs for precursors emission reduction in
 each sector can be found in (Schopp et al.,1998).
\layout Standard

>From a modelling point of view, the relationship between ozone and its precursor
s is captured through a neural network, thus exploiting the network ability
 in recognizing highly non linear relationships; in fact artificial neural
 networks have been showed to be able to well represent air pollution phenomena
 in many previous works (Prybutok, 2000; Perez, 2000; Soja,1999).
 Although photochemical three dimensional models such as CALGRID (Yamartino
 et el., 1992) provide a very detailed simulation of the complex photochemical
 processes, the requested computational burden makes impossible their use
 in an optimization task.
 On the contrary, neural network can be successfully used in such application
 because also of their computational speed.
\layout Section

Lombardy case study
\layout Standard

Region Lombardy, which measures overall about 24000 
\begin_inset Formula \( km^{2} \)
\end_inset 

, is compound by a plain part (47%) located in the Po Valley and by a hilly
 (12%) and a mountainous district (41%).
 The plain part, heavily industrialized and populated, presents frequently
 stagnating meteorological conditions which cause during summer high ozone
 levels .
\layout Standard

The national law establishes that 
\begin_inset Formula \( 200\mu g/m^{3} \)
\end_inset 

 for hourly average cannot be exceeded more than once for month (
\emph on 
DPCM 28/3/83
\emph default 
), while alarm and attention level are fixed for hourly average by a Regional
 law (
\emph on 
DGR 11/10/2000
\emph default 
) to 
\begin_inset Formula \( 180\mu g/m^{3} \)
\end_inset 

 and 
\begin_inset Formula \( 360\mu g/m^{3} \)
\end_inset 

 respectively.
 Moreover, thresholds for population health is fixed to 
\begin_inset Formula \( 110\mu g/m^{3} \)
\end_inset 

 for 8h average.
\layout Standard

The pointed out dissimetry has to be carefully taken into account in order
 to design effective reduction policies.
 Moreover such analysis pointed out that the mountain part of the region
 is quite insensitive to precursors reduction even in the order of 30%,
 and that the overall air quality in the region improves decreasing only
 
\begin_inset Formula \( VOC \)
\end_inset 

 emissions.
\layout Subsection

State of the art
\layout Standard

A simplified quadratic 
\emph on 
source-receptor
\emph default 
 model can be found in (Schopp et al.,1998); the model predicts daily ozone
 concentration at each receptor taking into account 
\emph on 
VOC
\emph default 
 and 
\begin_inset Formula \( NO_{x} \)
\end_inset 

 emission rates at the sources.

\emph on 
 
\emph default 
This
\series bold 
 
\series default 
simplified description of the source-receptor relationship can be used within
 an integrated assessment model, thus allowing for a systematic cost effectivene
ss analysis; it should be noticed that more complex models, which contain
 a high degree of detail of chemical and meteorological processes, can not
 be employed in optimization analysis because of their computational requests.
\layout Subsection

Priorities of emission abatments
\layout Standard

In order to find out the 
\emph on 
geographical
\emph default 
 differences in solving the problem, two different ANN models - 
\emph on 
Plan
\emph default 
 region model and 
\emph on 
Mountain
\emph default 
 region model - have been developed.
 The optimization problem of reducing the pollution keeping as low as possible
 the reduction emission costs has been solved using the constrain method:
 the 
\emph on 
Pareto-bound
\emph default 
 of fig.
 
\begin_inset LatexCommand \ref{ParetoBound}

\end_inset 

 shows the solution of the problem.
 
\layout Standard

Some differences between the 
\emph on 
Mountain
\emph default 
 and the 
\emph on 
Plan
\emph default 
 region exist for the reduction levels suggested from the 
\emph on 
highest-curvature criterion
\emph default 
.
 This is the most interesting result of the whole analysis: the need of
 developing a 
\emph on 
geographical
\emph default 
-based pollution reduction strategie is stressed.
 
\layout Standard

The whole analysis appears as an introduction to a methodological approach,
 but some future developments can be immediatly suggested: 
\layout Itemize

a highest number of omogeneous geographical areas should be detected, in
 order to give a more detailed solution to the problem; 
\layout Itemize

the functions 
\emph on 
c
\emph default 

\begin_inset Formula \( _{s} \)
\end_inset 


\emph on 
(r
\emph default 

\begin_inset Formula \( _{s}^{i,j} \)
\end_inset 


\emph on 
)
\emph default 
 - the reduction costs for unity of the removed pollutant - should be built
 for the Lombardy case study.
\layout Bibliography
\bibitem [Bishop, 1995]{bishop}

Bishop, C.M., Neural networks for pattern recognition, Oxford University Press,
 1994.
\layout Bibliography
\bibitem [Norgaard et al., 2000]{Norgaard}

Norgaard, M., O.
 Ravn, N.K.
 Poulsen, L.K.
 Hansen, Neural networks for modelling and control of dynamic systems, Springer-
Verlag, London, 2000.
\layout Bibliography
\bibitem [Jolliffe, 1986]{PCA}

Jolliffe, I.T., Principal Component Analysis, Springer-Verlag, 1986.
\the_end


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