00000ctm a22000004a 4500 UP-99796217613576948 Buklod 20210117041825.0 m o j ta 080209s1998 xx r |000 u|eng d (iLib)UPD-00522070845 DML eng DMLUC LG 995 1998 L4 V54 Villaflor, Marie Antoinette D. author. A citation analysis of the University of the Philippines College of Science theses and dissertations (1990-1995) Marie Antoinette D. Villaflor ; Leticia B. Dizon, adviser ; Rodolfo Y. Tarlit, reader. Quezon City Institute of Library Science, University of the Philippines Diliman 1998. x, 69 leaves Computer print out. Vita. Special Problem (Master of Library Science) University of the Philippines Diliman October 1998. This broad-based citation study in the sciences investigates patterns of citations in 205 theses and dissertations submitted to the University of the Philippines College of Science in the years 1990-1995. The study involves 6,424 citations. Results show that almost 66.86 percent of citations were to journal articles, 20.39 percent were to books, 4.48 percent were to conference proceedings, 1.84 percent were to reference books, 3.69 percent were to theses/dissertations and 2.44 percent to reports. Citation time span is relatively long, with 15 years needed to cover 50 percent of all citations, and 35 years needed to cover 80 percent of all citations. Local materials used in citations comprised 16.87 percent while 83.13 percent of all the citations used foreign materials. The greatest number of references were 10-1 years old. Eighty percent of the references were less than 25 years old. The most cited local authors were M. Estoque and G. Trono with 23 citations each while T. Florence and D. Pauly with 11 citations each were the most cited foreign authors. Natural and Applied Science Bulletin and Monthly Weather Review were the highly cited journals. The journal written by J. de las Alas and R. Encarnacion was considered as highly cited journal article as it was cited five times. The book entitled "Statistical Procedures for Agricultural Research" by K. Gomez and A. Gomez was cited also five times. The citations analyzed in this study have shown that a broad range of publication formats is used by science researchers to fulfill their information needs. They need access to journals as they rely heavily on such bibliographic format. This indicates that they prefer information produced with adequate peer view or pre-publication evaluation such as journals. An overwhelming majority of these citations (83.13) was to foreign materials published during 1981 through 1990. This fact has implications for budgeting of acquisitions funds. Collection development managers in sciences have to maintain large amounts of their budgets to support increasing serial costs. The figures on the age of materials cited provide some interesting points to consider when it comes to the determination of retention and storage of library materials. The aging rate of the different literature types was the same, the majority of the references being 10 years old or less. Eighty percent of the references were less than 25 years old. This long useful life of materials demonstrates a preference for non-monographic material. This may reflect the use of obtaining current periodical references electronically. Older materials might be stored or replaced with a more compact format such as microfilm or fiche. University of the Philippines Diliman. College of Science Dissertations. Bibliographical citations. Dizon, Leticia B. adviser. Tarlit, Rodolfo Y. reader. FI UP UPD DLS LG 995 1998 L4 V54 Thesis