1,720,993 research outputs found
Mispricing and risk of R&D investment in European firms
No full textWe study whether R&D-intensive firms earn superior stock returns compared to matched size and book-to-market portfolios across several financial markets in Europe. Mispricing can arise if investors are not able to correctly estimate the long-term benefits of R&D investment or whether R&D firms are more risky than others. The results confirm that more innovative firms can earn future excess returns. Stocks listed on continental Europe markets and operating in high-tech sectors are more prone to undervaluation. This can be caused in the first case by information asymmetries that are more severe in bank-based countries. No evidence is found for a different risk pattern of R&D-intensive stocks
Extraction and purification of protease from silver catfish (Pangasius sutchi) viscera / Normah Ismail and Nurnajwa Aziz Jaafar
Full text linkProtease is the enzyme which can be extracted from plant, animal, and microorganism. About 60% enzymes widely used nowadays are proteases. The objectives of this study were to determine the proteolytic activity and molecular weight distribution of protease extracted from Pangasius sutchi silver catfish viscera. Crude protease was extracted in 10 mM Tris-HCL buffer at pH 8.0. Subsequently, the protease was partially purified in stages beginning from ammonium sulphate precipitation (60%) followed by dialysis and gel filtration chromatography. Fractions collected from gel filtration chromatography was freeze-dried and analysed for optimum temperature and pH. Results showed that the viscera contain 13.79% protein. The protease total activity was 344.08 U with specific activity of 31.92 U/mg, purification fold 3.5 and 63.16% percent recovery. The protease proteolytic activity was optimum at 60 °C and pH 6. This study indicated that purification steps involving ammonium sulphate precipitation at 60% saturation, gel filtration chromatography and freeze drying led to the production of Pangasius sutchi visceral protease with a relatively high proteolytic activity
Panel regression method to analyse the stock market returns due to Covid-19 / Nur Mardziah Aziz Jaafar and Noraini Noordin
Full text linkMalaysia's earliest COVID-19 patients, reported on January 25, 2020, were travellers from China to Malaysia through Singapore. The detected confirmed cases, which were associated with religious gatherings were scarce in number before March 2020. The Prime Minister of Malaysia called for the 'Movement Control Order' beginning March 18, 2020. This study aimed to determine the aftereffects of COVID-19 pandemic outbreaks on stock markets by measuring the correlation between market returns and daily growth of total new and death cases of COVID-19. Panel regression methods, namely pooled ordinary least square and fixed-effect methods were used in this study where the dependent variable is stock market returns and independent variables were i) daily growth new death cases COVID-19 ii) natural algorithm market capitalisation iii) Brent Crude Oil Price from January 2, 2020, until March 31, 2020. Findings showed that during MCO for every one confirmed case increase, the stock returns decreased to -0.172 and for every one confirmed death increase, the stock returns decreased to -0.066. Thus, the stock market returns reported significant negatives to both total new cases and death cases' daily growth. The estimated market returns were also negatively influenced by new cases of and deaths due to COVID-19. Besides helping investors make the right decision during a pandemic crisis, the findings can be expanded in future research, by increasing the data frame, independent variables and finding the impact of more specific indices of the sector
A study on building management concern in providing access and facilities for person with disabilities (PWD) in Klang Valley Shopping Malls / Nur Ezzatul Edhlin Aziz Jaafar
No full textGenerally, this study concerned about the access and facilities for person with disabilities (PWD) in shopping malls. It related to the building management concern in providing access and facilities for PWD in Klang Valley shopping malls. As this study aimed is at assessing building management concern in providing access and facilities for PWD in Klang Valley shopping malls, it has three
objectives that need to be achieved. Firstly to identify related provisions of access and facilities for PWD in shopping malls, secondly to examine building management awareness, willingness, and readiness in providing access and facilities for PWD in shopping malls and last one is to recommend measures to increase building management awareness, willingness, and readiness in providing access and facilities for PWD in shopping malls. Ten shopping malls in Klang Valley were selected based
on the capacity of customer visits which is that frequented by visitors including PWD. The research methodology that has been implemented during the research is through the visual observation about the access and facilities for PWD that has been provided in shopping malls and the structured interview has been conducted to obtain the information about the awareness, willingness, and readiness of building management in providing access and facilities for PWD in shopping malls and to fulfill the objectives. The data is obtained from the survey that has been carried out at
the selected shopping malls or building management. All the data has been gathered and analyzed, and have been presented or shows into forms of table and charts. Findings show that the score among of respondents level of awareness, willingness and readiness in providing access and facilities for PWD in shopping
malls selected in Klang Valley. The level of awareness is higher compare to the level of willingness and readiness. Most of the respondents and their building management have excellent awareness and willingness and good readiness in providing access and facilities for PWD in shopping malls. Recommendations are made to increase building management awareness, willingness, and readiness in providing access and facilities for PWD in shopping malls
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
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
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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