Carlos Vílchez-Román | Universidad San Martín De Porres (original) (raw)

Papers by Carlos Vílchez-Román

The objective of this article is: a) to identify Peruvian researchers with high, medium and low i... more The objective of this article is: a) to identify Peruvian researchers with high, medium and low impact factor according to Web of Science and Scopus databases; b) to identify the bibliometric factor with the highest influence on h-index of Peruvian researchers; c) to compare h-index between Web of Science and Scopus, at an individual and institutional level. Data were collected from Web of Science and Scopus (189 Peruvian researchers, 28 institutions on Web of Science and 33 on Scopus), between September 18-23, 2013. Then, institutional registries were created and linear regression analysis with stepwise procedure was run to identify bibliometric factors with higher influence on the h-index of Peruvian researchers. Web of Science and Scopus showed interesting simmilarities in the h-index of Peruvian academic institutions. At individual level, documents indexed in citation database had the highest influence on the h-index. Regression model identified bibliometric factors with higher influence on the h-index of Peruvian researchers, however further large scale studies are needed to improve external validity.

Information Research, Jul 2004

Objective: To know the opinions of university students in relation to the censorship of sexually ... more Objective: To know the opinions of university students in relation to the censorship of sexually explicit material. An opinion survey of a sample of 842 students of three Peruvian universities was used. Results: 1) women support laws that would prohibit completely pornography on the Internet, whereas men endorse regulating measures designed to protect minors (p (p=0.002); 2) the research hypothesis that a relation between the opinion of university students exists, in favour of freedom of information and the present exhibition of sexually explicit material was confirmed (p<0.001); 3) 28% of the students are in favour of the censorship of publications, and a greater percentage of women showed their agreement (p=0.002); 4) the subscale "Censura/Rechazo" obtained a high level of trustworthiness (a=0.7961), whereas the subscale "Liberalidad" was more moderate (a=0.5312).

ACIMED: , Apr 2008

Objective: To identify the relationship between information resources usage (print and audiovisua... more Objective: To identify the relationship between information resources usage (print and audiovisuals) and pregnancy in adolescence. Hyphotesis:
Magazines and newspapers reading, as well as TV and radio preference, are associated with pregnancy in Peruvian adolescents.Methods: Starting from the database of the Demographic and Health Family Survey (Endes, in Spanish) 2004-2005, we selected a sample of 1,567 adolescents, who were 15-17 years old when the survey was done. For the association test we used the 2 test. Results: 2.3% of the adolescents were pregnant at the time of the survey. 6% were mothers of one or two children (n=96). Preferred media were radio and television, in that order. Conclusions: The three variables proposed in the model were associated with pregnancy in adolescence (p<0.01). Recommendations: To promote the sexual education programs in schools by: 1) Incorporating the Sexual Education course as an obligatory subject in the official curriculum. 2) Implementing a network of Sexual Counselling Centres (SCC), channelled as projects of the National Public Investment System (SNIP, in Spanish) through local and regional governments, so that the adolescents have a better knowledge of their sexuality and do not have to interrupt their life projects because of undesired pregnancies.

Investigación Bibliotecológica, Jun 2003

To identify sex differences in the use patterns of internet and analyze the undergraduate student... more To identify sex differences in the use patterns of internet and analyze the undergraduate students' opinions about their performance using internet tools, the author used an opinion survey with a sample of 101 undergraduate students (44 male and 57 females) enrolled in the Librarianship and Information Science School from a Peruvian university. To analyze the internet perception the author validated the instrument designed by Ford & Miller (1996). The main results were: 1) There were no significative sex differences, between men and women, in relation to the use patterns of internet. 2) Using the Principal Component Analysis (PCA) the author identified five internet use behaviors, which explains the style used by the undergratuate students.

Revista AIBDA, Dec 2009

Advocates of free markets argue that the administration of assets and resources should be privati... more Advocates of free markets argue that the administration of assets and resources should be privatized, including the water service. However the interest of business is to maximize profits, not to raise social welfare. This topic is little discussed in academic literature, at least those recorded in the database Web of Science and Scopus. To characterize the way scientific papers have addressed the problem of water privatization, searches in Web of Science using keywords related to the privatization of water were done. Then, records were exported to BibExcel and VBPro. BibExcel made possible to identify the most cited articles and authors, as well as to generate a cocitation matrix. VBPro generated two-dimensional maps of contents from title and abstracts of these two databases. The citation analysis and text mining reveals a concentration on key authors and themes, which suggests a limited and narrow perspective on this important social problem.

Revista Interamericana de Bibliotecología, Jul 2003

Identify the preferred activities and the time spent in them by adolescents. 2) Considering those... more Identify the preferred activities and the time spent in them by adolescents. 2) Considering those leisure activities, to know the likes and dislikes of adolescents in terms of importance and time spent in those activities, and 3) Identify activities associated with leisure reading. A self-report instrument in a sample of 325 secondary students of a religious private school was used. The questionnaire was designed by the author of the research. According to the results of the paper: 1) Adolescents preferred to spend their leisure time being with friends, in sports or playing, by contrast they preferred not to read any kind of books and magazines during their leisure time. 2) Seven activities associated with reading of books and magazines were identified using Spearman's correlation coefficient. It was found statistical significance (p .05) among the leisure reading and these seven activities which are related with the use of electronic devices (computers, radios, walkmans, and discmans). Finally, a summary of the findings is presented as well as some suggestions for future research on adolescents leisure time.

Revista Peruana de Obstetricia y Enfermería, Dec 2008

Objective: To analyze the psychometric properties of a test for measure the health literacy, whic... more Objective: To analyze the psychometric properties of a test for measure the health literacy, which originally was designed for spanish speaking patients. Material and method: SAHLSA-50 test with a sample of 49 women in reproductive age, users of the gynaecological service at the Dos de Mayo hospital, in Lima (Perú). For the data analysis we used the the Cronbach's alpha coefficent and the value of alpha if item is deleted. Results: The SAHLSA-50 score had an almost normal distribution and a moderate high level of reliability (alpha=0.8773), but we identified a group of items that should be reviewed because its effect on the reliability of the scale. Conclusions: To find out if patients of health services actually understand the promotional and informative material they receive it is necessary to carry out this kind of studies, but always analizyng if the data collection tool has adequate psychometric properties.

Revista Colombiana de Obstetricia y Ginecología, Aug 2009

Objective: the objectives were to identify the percentage of subjects having appropriate health l... more Objective: the objectives were to identify the percentage of subjects having appropriate health literacy and determine the demographic variables predicting appropriate health literacy in females. Methodology: this was a cross-sectional study in which the short assessment of health literacy for Spanish adults (SAHLSA-50) test was given to a sample of 49 reproductive-aged females who were attending the gynaecological service at Dos de Mayo Hospital in Lima, Peru. Linear regression analysis and Pearson’s coefficient of correlation were used to test the hypothesis. Results: SAHLSA test scores ranged from 22 to 50 points, averaging 37 + 7.15 points; 43% of the females surveyed obtained a score lower than the average on the health literacy test (n=21). It was found that the level of schooling was a predictor for health literacy level (p<0.05). Conclusions: these findings showed that patients who have had lower levels of schooling would have little opportunity of understanding written messages/instructions issued by local or state health services.

Revista Médica de Chile, Jan 2009

Background: It is possible that there is a relationship between reading newspapers and magazines,... more Background: It is possible that there is a relationship between reading newspapers and magazines, watching televisión and ¡istening to the radio and unwanted pregnancies. Aim: To assess the relationship between the access to printed and audiovisual information resources and unwanted pregnancy in Peruvian women. Material and methods: A sample of 5,071 women, aged between 18 and 30 years was selected from a datábase of a Demographics and Health survey performed between 2004 and 2005. Using the information obtained in the survey, the association between unwanted pregnancies and reading newspapers and magazines, was analyzed. Results: Twenty six percent of women had at least an unwanted child (n =1,327). Radio and televisión were the media mostly used by these women. Seventy five percent of women almost never read newspapers and magazines. The lack of reading and the reliance in televisión and radio as sources of information were all associated with unwanted pregnancy (p & lt;0.001). Conclusions: In this sample of women, there is a negligible interest for reading and a high preference for radio and televisión. This explains the poor knowledge on sexual and reproductive health and the lack of impact of printed materials used in educational campaigns.

Biblios, Aug 2008

It presents the results of quality test applied to a library service at the Universidad Nacional ... more It presents the results of quality test applied to a library service at the Universidad Nacional Mayor de San Marcos (UNMSM) under the methodology LibQUAL + in a sample comprised of users of five faculties. The study offers the end a set of recommendations and suggestions for improving service.

Fénix: revista de la Biblioteca Nacional del Perú, 2007

Hyphotesis: The students of the classroom where the teacher set up citation quotas, in average, c... more Hyphotesis: The students of the classroom where the teacher set up citation quotas, in average, cites less non academic works than the students of the classroom where the teacher stressed on the diversity of information sources the students can use to develop their papers. Methods: The bibliographic references of 80 monographic works of undergraduate students from a private Peruvian university, enrolled in the course 'Writing and Discussion' were analyzed. The bibliographic references were divided in two groups: those belonging to the classroom where the teacher set up quotas for the number of texts found in the internet that could be cited and those belonging to the classroom where the teacher didn't set up quotas. Results: The hyphotesis was confirmed because it was found a significative difference in the number of non academic cites between the two classrooms (t=-4.009 , g.l.=78, p.0001). However the difference in the number of academic cites was too small and didn't get statistic significance. According to the r of Pearson coefficient there is a positive and strong correlation between the books category and the variable academic cites (p.001), while the categories newspapers, magazines and non academic web sites showed a negative and too weak relationship. With relation to the newspapers this inverse relationship was significative (p.05). Conclusions: Even when the citation of texts found on the internet has become a mainstream practice, while the teachers set up specific rules and quotas for the number of texts found on the internet that can be cited, it is possible to control and, in the long term, reduce the negative impact caused for the use of non academic information sources or works non thrustworthy.

Biblios, Jun 2009

This study describes the scientific production of major Peruvian academic institutions and determ... more This study describes the scientific production of major Peruvian academic institutions and determine the web visibility of two Peruvian journals of Communication Research and Economics. For exploratory analysis, we consulted papers indexed by the Web of Science database, and to measure the web visibility, used the webometrics ranking methodology to analyze the journals Economia and Contratexto. The university leading Peruvian scientific production, generates the same volume of Science as the three universities included in top 10 academic institutions. Economía and Contratexto journals has lower web visibility than other Latinamerican journals from Economics and Communication Research. We conclude that as the Peruvian universities turn their traditional printed journals into open access, academic journals can improve their web visibility.

Biblios, Dec 2003

Se revisan algunos conceptos relacionados con la llamada "sociedad de la información" y luego se ... more Se revisan algunos conceptos relacionados con la llamada "sociedad de la información" y luego se analizan varios indicadores que sustentan la creencia generalizada según la cual Internet ha alcanzado una difusión masiva dentro de la sociedad peruana. Al final el autor propone una reflexión crítica sobre este tema.

The book includes a brief historic description of the Library and Information Science (LIS) resea... more The book includes a brief historic description of the Library and Information Science (LIS) research development in the Latinamerican countries, including the two Peruvian universities with a LIS school: PUCP and UNMSM.

The book includes a discussion about the epistemological status of Librarianship.

Congreso Internacional Virtual de Educación CIVE 2002, Palma de Mallorca (España), Apr 26, 2002

The authors review the different models related to the information skills development: Eisenberg ... more The authors review the different models related to the information skills development: Eisenberg & Berkowitz (1988), Herring (1996), Irving (1985), Kulthau (1982), and the Australian School Library Association (1997). Then both propose a media library users' education program, a necessary item to assure the information skills development in primary and secondary schools.

Infobib, 2004

The research goals were: a) Identify the main attributes of the leisure-time activities of school... more The research goals were: a) Identify the main attributes of the leisure-time activities of school students. b) Analyze the school students' perceptions of the reading as a leisure-time activity. The author used a self-report instrument with a sample of 325 school students of a private religious Peruvian high school. Using the multidimensional scaling (MDS) it was possible to identify three attributes which characterizes the adolescents' leisure-time activities.

ACIMED, Mar 2008

The programs of information retrieval for developing countries were analyzed, as well as the eval... more The programs of information retrieval for developing countries were analyzed, as well as the evaluation techniques applied to the usability, and those applied to the human-computer interaction, making emphasis on the empirical tests. A description was made of the work style of a full text information retrieval system distributed as a free software model, which has achieved an important diffusion level within the Peruvian academic community: the Cybertesis site. Subsequently, the usability problems of the search interface of the mentioned site reveals an excess of information in the presentation of the results, as well as omissions in the signs and labels used, and the absence of necessary search options as, for example, chronologic search. Finally, changes to the search interface of Cybertesis were recommended aimed at improving the effectiveness and efficiency of its information recovery system.