1,720,991 research outputs found
A new relation of second order limit language in simple and semi-simple splicing system
No full textSplicing system, which is an abstraction of operations on DNA molecules, can be modelled mathematically under the framework of formal language theory and informational macromolecules. The recombinant behavior of the set of double-stranded DNA molecules under the influence of restriction enzyme and ligase further lead to the cut and paste phenomenon in splicing system. The theoretical study of splicing language has contributed to a new type of splicing language known as a second order limit language, which is an extension of limit language. Some types of splicing system can produce second order limit language. Y-G splicing system is chosen among other models to model the DNA splicing process as this model preserves the biological traits and presents the transparent behavior of the DNA splicing process. In this paper, the relation between second order limit language with simple splicing and semi-simple splicing system are presented
A comparison of second order and non-second order limit language generated by Yusof-Goode splicing system
No full textDNA splicing process is a study on the recombinant behavior of double-stranded DNA molecules with the existence of restriction enzyme and ligase. Head introduced the first mathematical model of splicing systems by using the relation of informational macromolecules and formal language theory. In addition, a few laboratory experiments have been conducted in order to verify certain types of splicing language called inert/adult, transient and limit language. Previously, researchers have focused on those types of splicing languages. Recently, an extension of limit languages namely second order limit language has been introduced. In this paper, the difference between second order limit languages and non-second order limit languages is depicted in some examples. Then, the formations of second order limit language in Yusof-Goode splicing system are investigated
Biomolecular aspects of second order limit language
No full textThe study on the recombinant behavior of double-stranded DNA molecules has led to the
mathematical modelling of DNA splicing system. The interdisciplinary study is founded from the
knowledge of informational macromolecules and formal language theory. A splicing language is
resulted from a splicing system, in which different types of splicing langauges have been researched
previous, namely adult/inert, transcient and first order limit language. Recently, second order limit
language has been extensively explored from the first order limit language. Therefore, in this paper,
a laboratory experiment was conducted to validate the existence of a second order limit language. To
accomplish it, an initial strand of double-stranded DNA, amplified from bacteriophage lambda, was
generated through polymerase chain reaction to generate thousands of copies of double-stranded
DNA molecules. A restriction enzyme and ligase were added to the solution to complete the reaction.
The reaction mixture was then subjected to polyacrylamide gel electrophoresis to separate biological
macromolecules according to their sizes. A mathematical model derived at the early study was used
to predict the approximate length of each string in the splicing language. The results obtained from
the experiment are then used to verify the mathematical model of a second order limit language. This
study shows that the theory on the second order limit language is biologically proven hence the model
has been validated
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
CITREX 2024 - Congratulations to all winners from PSM UMPSA
Full text linkCentre for Mathematical Sciences would like to congratulate the winners of the 14th Creation, Innovation, Technology & Research Exposition (CITREX 2024) which has been held on 8 – 9 May 2024 at Sport Complex, UMP Gambang Campus. In this exhibition, researchers submit their very best outcome of research projects, and at the same time to identify the potential projects to be participated in local and oversea exhibition
PSM UMPSA Staff Prepare Heartwarming Iftar Meal on 9 Ramadan 1446H
Full text linkIn the spirit of Ramadan, on March 10, 2024 (9 Ramadan 1446H), PSM UMPSA staff came together to prepare an iftar meal for staff, students, and visitors at UMPSA Gambang Campus. The meal featured Ayam Masak Lemak Cili Api and Sayur Campur, fostering a sense of community during the holy month
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Calculus is a Piece of Cake - MOOC tawar pembelajaran lebih fleksibel
Full text linkUmum sedia maklum dengan kepesatan teknologi pada masa kini. Arus teknologi yang pesat membangun mencipta 1001 peluang kepada semua pihak yang bijak mencari ruang. Jika dilihat secara sepintas lalu, siapa sangka pembelian barangan yang dahulunya dilakukan secara fizikal, kini, hanya boleh dilakukan dengan menggunakan aplikasi mudah alih pada peranti pintar. Sektor pendidikan turut tidak terkecuali. Ayuh kita singkap ciri-ciri pembelajaran yang dipraktikkan sebelum tercetusnya ledakan internet dan teknologi. Pengajaran dan Pembelajaran (P&P) dahulu berteraskan kaedah fizikal yang melibatkan penglibatan dua hala dalam bilik darjah di antara guru dan pelajar. Ketika awal tahun 2000, penggunaan teknologi sering diamalkan dalam penyediaan laporan dan tugasan kumpulan. Laporan ditulis menggunakan Microsoft Word dan dicetak sebelum dihantar kepada guru untuk disemak. Masuk ke tahun 2020, penggunaan teknologi yang semakin meluas menggasak pendidik untuk lebih memperkasakan penggunaan teknologi sebagai alat bantu mengajar dalam usaha mewujudkan suasana pembelajaran yang lebih menarik, komprehensif dan seiring dengan kemajuan teknologi semasa
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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