Wednesday, March 15, 2017

Chemoinformatics - Towards Making a Guide to The Chemical Reactions' Complex World

Chemical reactions are fundamental phenomena in nature. Much variety compounds have been generated by natural resources and synthesized artificially. Prediction of the reaction products from reactants and reaction condition is one of my research themes. This is one of the difficult problems in chemistry.Attempts to chart a course through the "universe of chemical reactions"Solving the chemical reaction prediction problem entails finding a solution from a huge number of possibilities of reactions that occur as a result of complicated interactions between several factors concerning structural and electronic properties of reactants, reagents, catalysts, and solvents, and conditions such as temperature, density, pressure, and reaction time. To find a solution, the space with broad diversity to be searched ought to be reduced. Hence, chemists must seek ways to reach the solution within an acceptable time by reducing the space in a rational way.Chemoinformatics is a new discipline that has a possibility to reduce the size of the search space by using chemical information as well as informatics technologies. Chemoinformatics is an interdisciplinary field that aims at solving chemical problems by applying informatics methods. We have been attempting to chart a course through the "universe of chemical reaction" by using the chemoinformatics approaches.


Thursday, September 11, 2008

Chemistry Teaching Web Sites

This web site is designed to help chemistry teachers find useful information on the internet. There are a few of the more interesting and helpful sites listed below. This is not even the tip of the iceburg; there is much more information available, it is just a matter of finding it. I hope what I have listed so far is helpful to you. Remember that this site is still under construction!

http://people.moreheadstate.edu/fs/h.hedgec/sciteach.html

Chemistry Software and Science Teaching Resources

Atoms, Symbols and Equations
Chemistry software specially written for hard pressed teachers!

Interactive Windows chemistry teaching software specially designed for whole class use in schools. Teaches about word equations, atoms, chemical elements, symbols, chemical formulas, the Periodic Table, atomic structure, the formation of ions and writing and balancing chemical equations. At last, independent, structured learning of difficult Chemistry topics. The latest version is for Windows 95/98/ME/XP/NT4 and 2000 (including networks), but a version for Win 3.1 is still available. Free to download and try.


http://www.chemistryteaching.com/

Wednesday, September 10, 2008

Large Hadron Collider

The Large Hadron Collider (LHC) is the world's largest and highest-energy particle accelerator complex, intended to collide opposing beams of protons (one type of hadron) charged with high energy. Its main purpose is to explore the validity and limitations of the Standard Model, the current theoretical picture for particle physics. It is theorized that the collider will confirm the existence of the Higgs boson, the observation of which could confirm the predictions and missing links in the Standard Model, and could explain how other elementary particles acquire properties such as mass.

The LHC was built by the European Organization for Nuclear Research (CERN), and lies underneath the Franco-Swiss border near Geneva, Switzerland. It is funded by and built in collaboration with over eight thousand physicists from over eighty-five countries as well as hundreds of universities and laboratories. The LHC is already operational and is presently in the process of being prepared for collisions. The first beams were circulated through the collider on 10 September 2008, and the first high-energy collisions are planned to take place after the LHC is officially unveiled on 21 October.

http://en.wikipedia.org/wiki/Large_Hadron_Collider

Tuesday, September 9, 2008

Bibliometrics and Social Work A Two-Edged Sword Can Still Be a Blunt Instrument

In order to improve the productivity and impact of social work scholarship, the profession must look beyond bibliometrics to other issues that must be considered. These include the lag time between acceptance and publication of articles, the quality of peer review experienced by social work authors, and the overabundance of journals being published in social work.

http://www.haworthpress.com/store/ArticleAbstract.asp?sid=E6G35P132X969L4TPPQR8EM6TJSSDF60&ID=59225

Citation Analysis of Chemistry Doctoral

A citation analysis of dissertations accepted in the Department of Chemistry at The Ohio State University between 1996-2000 was performed as a way to determine material use. The 30 dissertations studied generated a total of 3,704 citations. Types of materials cited, currency of literature, and dissertation topics were all analyzed.

The current results corroborate past research by other authors. Journal articles were cited more frequently than monographs: 85.8% of the citations were journal articles and 8.4% of the citations were monographs. The results of this study may be used to assist OSU and other universities in chemistry collection development.

http://www.istl.org/01-fall/refereed.html

Monday, September 8, 2008

A Concise Introduction to Bibliometrics & its History

The origin of the term "Bibliometrics"

The terms bibliometrics and scientometrics have been introduced almost simultaneously by Pritchard and by Nalimov and Mulchenko in 1969. While Pritchard explained the term bibliometrics as "the application of mathematical and statistical methods to books and other media of communication" (Pritchard, 1969), Nalimov and Mulchenko defined scientometrics as "the application of those quantitative methods which are dealing with the analysis of science viewed as an information process" (Nalimov and Mulchenko, 1969). According to these interpretations, scientometrics is restricted to the measurement of science communication, whereas bibliometrics is designed to deal with more general information processes.

The anyhow fuzzy borderlines between the two specialities almost vanished during the last three decades, and nowadays both terms are used almost as synonyms. Instead, the field informetrics took the place of the originally broader speciality bibliometrics. The term informetrics was adopted by VINITI (Gorkova, 1988) and stands for a more general subfield of information science dealing with mathematical-statistical analysis of communication processes in science. In contrast to the original definition of bibliometrics, informetrics also deals with electronic media and thus includes topics such as the statistical analysis of the (scientific) text and hypertext systems, library circulations, information measures in electronic libraries, models for Information Production Processes and quantitative aspects of information retrieval as well. In his review entitled "Biblio-, sciento-, infor-metrics??? What are we talking about" Brookes (1990) gave an interesting overview about origin and contexts of these metrics of science, literature and information in general. The description given by Glänzel and Schoepflin in 1994 defines the scope of bibliometric research areas is much wider than the usual ones, and thus integrate all presently existing orientations such as applications to science policy, library science, and information retrieval. According to their approach, bibliometrics and informetrics include "all quantitative aspects and models of science communication, storage, dissemination and retrieval of scientific information". The definition by Gloria Carrizo-Sainero (2000) considers bibliometrics "the ensemble of methodological knowledge that will serve the application of quantitative techniques in order to evaluate the processes of production, communication and use of scientific information. Its goal is to contribute to the analysis and evaluation of science and research." This gives a clear orientation in direction toward research evaluation that has become the most important application of bibliometric research and technology.

From the above-mentioned general description of the main task of the research field bibliometrics (scientometrics), the following statement becomes quite obvious. Bibliometrics can be used to develop and provide tools to be applied to research evaluation but is not designed to evaluate research results. Moreover, bibliometrics does not aim at replacing qualitative methods by quantitative approaches and bibliometrics is not designed to override or even to substitute peer reviews or evaluation by experts but qualitative and quantitative methods in science studies should complement each other.

http://www.steunpuntooi.be/index.php?id=103