In the field of business research method, a literature review is more relevant than ever. Even though there has been lack of integrity and inflexibility in traditional literature reviews with questions being raised about the quality and trustworthiness of these types of reviews. This research provides a literature review using a systematic database to examine and cross-reference snowballing. In this paper, previous studies featuring a generalized autoregressive conditional heteroskedastic (GARCH) family-based model stock market return and volatility have also been reviewed. The stock market plays a pivotal role in today's world economic activities, named a "barometer" and "alarm" for economic and financial activities in a country or region. In order to prevent uncertainty and risk in the stock market, it is particularly important to measure effectively the volatility of stock index returns. However, the main purpose of this review is to examine effective GARCH models recommended for performing market returns and volatilities analysis. The secondary purpose of this review study is to conduct a content analysis of return and volatility literature reviews over a period of 12 years (2008-2019) and in 50 different papers. The study found that there has been a significant change in research work within the past 10 years and most of researchers have worked for developing stock markets.
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http://dx.doi.org/10.3390/e22050522 | DOI Listing |
Heliyon
November 2024
School of Finance - Accounting, Industrial University of Ho Chi Minh City, Hochiminh City, Viet Nam.
This study aims to evaluate the impact of factors representing the Board of Directors (BOD) and Audit Committee (AC) on financial information transparency (FIT) in a frontier market. FIT is measured through three indicators that reflect financial non-transparency: earnings aggressiveness (EA), earnings smoothing (ES) and loss avoidance (LA). Research data was collected from 338 companies listed on the Vietnam Stock Exchange (HOSE and HNX) from 2012 to 2022.
View Article and Find Full Text PDFNat Commun
January 2025
Translational Immunology Research Program (TRIMM), Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors are commonly used to treat non-small cell lung cancers with EGFR mutations, but drug resistance often emerges. Intratumor heterogeneity is a known cause of targeted therapy resistance and is considered a major factor in treatment failure. This study identifies clones of EGFR-mutant non-small cell lung tumors expressing low levels of both wild-type and mutant EGFR protein.
View Article and Find Full Text PDFRegul Toxicol Pharmacol
December 2024
Division of Nephrology, University of Utah Health, Salt Lake City, UT, USA.
Marketed endothelin receptor antagonists (ERAs) have been associated with testicular tubular atrophy and decreases in male animal fertility in chronic toxicity studies in rats and dogs. Consistent with these findings, reduced sperm count has been observed in the clinical setting and is considered a potential class risk with chronic administration of ERAs. In contrast, no such effects on male animal fertility are noted with angiotensin II type 1 receptor blocker (ARB) treatment.
View Article and Find Full Text PDFPoult Sci
December 2024
Department of Poultry Science, University of Arkansas, Fayetteville, Arkansas, USA 72701. Electronic address:
Fast growth rate and stocking density are global animal welfare concerns for broiler chickens. The objective of this study was to evaluate the effect of genetic strain and stocking density on the behavior of broilers. In a 2 × 2 randomized complete block design, conventional (CONV) and slow-growing (SG) broilers were stocked at either 29 kg/m (LO, n = 31 birds/pen) or 37 kg/m (HI, n = 40 birds/pen) in 16 pens (n = 4 pens/treatment).
View Article and Find Full Text PDFPLoS One
December 2024
Janssen Vaccines & Prevention, Leiden, The Netherlands.
Herpes Simplex virus (HSV) is the cause of genital herpes and no prophylactic treatment is currently available. Replication-incompetent adenoviral vectors are potent inducers of humoral and cellular immune responses in humans. We have designed an adenoviral vector type 35 (Ad35)-based vaccine encoding the HSV-2 major surface antigen gD2 (Ad35.
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