The Global Factors Driving Common Inflation In ASEAN

Trinh,Pham T. T(Trinh,Pham T. T ),Nhan,Le P. A.(Nhan,Le P. A. ) People&Global Business Association 2023 Global Business and Finance Review Vol.28 No.4

Purpose: This study investigates the comovements of inflation across ASEAN countries and identifies the global factors driving the common inflation dynamics of the region. Design/methodology/approach: The study uses a two-step approach. The dynamic latent factor model is first employed to estimate the common inflation of the region in the period between 2000Q1 and 2022Q2. In the second step, a bound test approach to autoregressive distributed lag (ARDL) methodology is employed to estimate the model of common inflation, which is constructed based on the aggregate supply - aggregate demand (AS-AD) framework. Findings: The study finds a common factor of inflation across ASEAN countries. The analysis of variance decomposition indicates the significant role of common inflation in the variations of individual countries' inflation. World economic growth, oil price change, non-fuel commodity price change, and trade openness are the main drivers of ASEAN common inflation in both short and long terms. Research limitations/implications: The study focuses mainly on supply-side factors, although some demand-side factors are involved. Future studies should pay more concerns on the trade linkages among regional countries and the similarities in goals in the region. Originality/value: The study examines the common inflation component across ASEAN countries, which has not been sufficiently investigated. It also evaluates the drivers at the global level of common inflation, which has limited empirical evidence.

Income Distribution and Factors Affecting the Bank’s Stability

Viet Xuan TRINH(Viet Xuan TRINH ),Du Kim DO(Du Kim DO),Anh Thi Lan NGUYEN(Anh Thi Lan NGUYEN ) 한국유통과학회 2022 유통과학연구 Vol.20 No.9

Purpose: Research on banking sustainability plays an important role in helping banks understand the level of risk in different types of companies. Therefore, this study was conducted to determine the factors affecting the sustainability of Joint Stock Commercial Banks in Vietnam. Research design, data and methodology: The following theories, the factors affecting the bank's sustainability include: Business model diversification (income diversification), bank size, loan ratio, and net interest margin. Data was collected from Joint Stock Commercial banks in Vietnam from 2015 to 2019. With GLS model on panel data with banks listed on Vietnam stock exchange. Results: The analysis results show that net interest income has a positive impact on the sustainable business results of banks through the rate of return on total assets (ROA). The non-interest income hasn’t impact on bank stability. From this result, there aren’t positive signs of income diversification in banks. At the same time, with the obtained results, the study also provides a policy implication for banks. Conclusions: The study also provides some policy implications to improve the bank stability. Diversifying income in banks is necessary, but how to make it influential banks has not yet been done. Therefore, the adjustments in non-interest business activities need to be carefully considered by banks.

An Empirical Study of Commodity Market Patterns in Ethnic Minorities and Mountainous Areas: Evidence from Vietnam

Trinh Thi Thanh THUY,Nguyen Thi BINH,Trinh Thi Thu HUONG,Nguyen Thu THUY,Dang Thanh PHUONG,Tran Thi Bao KHANH,Nguyen Thi YEN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.11

The development of the ethnic minorities and mountainous areas (EMMA) is currently receiving the attention of countries around the world. This is demonstrated through a large number of studies, in many respects, in many different countries. The objective of the study is to find out the current situation of the commodity market in the ethnic minorities and mountainous areas (EMMA) of Vietnam. In particular, the authors will study whether there is a link between the ability to access governmental policies and the characteristics of this commodity market. To achieve the goal, the authors employed the secondary data collection method to gather the relevant information on government policies for EMMA and conducted an interview of seventy (70) enterprises in the Northern midlands and mountainous regions and the Central Coast to clarify the characteristics of commodity market. By Levene’s test, the results showed that the accessibility to governmental policies has a certain influence on the development of the commodity market patterns in the EMMA in terms of diversification of distribution forms and sales method of the business. These findings brought some basic solutions to further enhance the role of the government in developing commodity markets in the EMMA of Vietnam.

Fully integrated and slidable paper-embedded plastic microdevice for point-of-care testing of multiple foodborne pathogens

Trinh, Kieu The Loan,Trinh, Thi Ngoc Diep,Lee, Nae Yoon Elsevier 2019 Biosensors & bioelectronics Vol.135 No.-

<P><B>Abstract</B></P> <P>This study presents a slidable paper-embedded plastic microdevice fully integrated with DNA extraction, loop-mediated isothermal amplification (LAMP), and colorimetric detection functionalities. The developed microdevice consists of three layers that allow a sliding movement to mix the sample and reagents for DNA purification, amplification, and detection in a sequential manner. An FTA card was employed in the main chamber for DNA extraction and purification from intact bacterial cells. Subsequently, LAMP reagents and fuchsin-stored chambers were pulled toward the main chambers for DNA amplifications at 65 °C. After 30 min, the detection reagents-stored chambers were then moved to main chambers for result analysis. For the detection of LAMP amplicons, a novel colorimetric fuchsin-based method was employed. The wide applicability of the integrated microdevice was demonstrated by successfully screening three major foodborne pathogens, namely <I>Salmonella</I> spp., <I>Staphylococcus aureus</I>, and <I>Escherichia coli</I> O157:H7 in food, enabling highly sensitive detection of 3.0 × 10<SUP>1</SUP> CFU/sample of Gram-negative bacteria (<I>Salmonella</I> spp. and <I>Escherichia coli</I> O157:H7) and 3.0 × 10<SUP>2</SUP> CFU/sample of Gram-positive bacteria (<I>Staphylococcus aureus</I>) within 75 min. The portable and integrated microdevice presented in this study holds significant promise for point-of-care applications to accurately and rapidly diagnose and control diseases.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The integrated microdevice could identify major foodborne pathogens in 75 min. </LI> <LI> DNA extraction, amplification, and detection were performed in a seamless manner. </LI> <LI> The loading and moving of samples were controlled simply by sliding the microdevice. </LI> <LI> The results were analyzed directly on chip using fuchsin, a triphenylmethane dye. </LI> <LI> 3 × 10<SUP>1</SUP> CFU/sample of Gram-negative bacteria and 3 × 10<SUP>2</SUP> CFU/sample of Gram-positive bacteria were detected. </LI> </UL> </P>

On the properties of positive Boolean dependencies by groups in the database model of block form

Trinh Ngoc Truc,Trinh Dinh Thang,Tran Minh Tuyen 한국전산응용수학회 2022 Journal of applied mathematics & informatics Vol.40 No.3

The article proposed a new type of data relationship: Positive Boolean dependencies by groups on block and slice in the database model of block form, where instead of considering value pairs, we consider a group of p values ({p \geq 2}). From this new concept, the article stated and demonstrated the equivalence of the three types of deduction, namely: deduction by logic, deduction by block with groups, deduction by block has no more than p elements with groups. Operations on blocks or slices performed for index attributes on blocks, the properties related to this new concept as theorem the equivalen of the three types of deduction, closure of set positive Boolean dependencies by groups and representation and tight representation set of positive Boolean dependencies by groups when the block degenerated into relation are true in the relational database model and also stated and proven in this paper.

Quasinormal Subgroups in Division Rings Radical over Proper Division Subrings

Trinh Thanh Deo,Le Qui Danh 경북대학교 자연과학대학 수학과 2023 Kyungpook mathematical journal Vol.63 No.2

The motivation for this study comes from a question posed by I.N. Herstein in the Israel Journal of Mathematics in 1978. Specifically, let D be a division ring with center F. The aim of this paper is to demonstrate that every quasinormal subgroup of the multiplicative group of D, which is radical over some proper division subring, is central if one of the following conditions holds: (i) D is weakly locally finite; (ii) F is uncountable; or (iii) D is the Mal’cev-Neumann division ring

A comprehensive observational filter for satellite infrared limb sounding of gravity waves

Trinh, Q. T.,Kalisch, S.,Preusse, P.,Chun, H.-Y.,Eckermann, S. D.,Ern, M.,Riese, M. Copernicus GmbH 2015 Atmospheric measurement techniques Vol.8 No.3

<P><p><strong>Abstract.</strong> This paper describes a comprehensive observational filter for satellite infrared limb sounding of gravity waves. The filter considers instrument visibility and observation geometry with a high level of accuracy. It contains four main processes: visibility filter, projection of the wavelength on the tangent-point track, aliasing effect, and calculation of the observed vertical wavelength. The observation geometries of the SABER (Sounding of the Atmosphere using Broadband Emission Radiometry) and HIRDLS (High Resolution Dynamics Limb Sounder) are mimicked. Gravity waves (GWs) simulated by coupling a convective GW source (CGWS) scheme and the gravity wave regional or global ray tracer (GROGRAT) are used as an example for applying the observational filter. Simulated spectra in terms of horizontal and vertical wave numbers (wavelengths) of gravity wave momentum flux (GWMF) are analyzed under the influence of the filter. We find that the most important processes, which have significant influence on the spectrum are the visibility filter (for both SABER and HIRDLS observation geometries) and aliasing for SABER and projection on tangent-point track for HIRDLS. The vertical wavelength distribution is mainly affected by the retrieval as part of the 'visibility filter' process. In addition, the short-horizontal-scale spectrum may be projected for some cases into a longer horizontal wavelength interval which originally was not populated. The filter largely reduces GWMF values of very short horizontal wavelength waves. The implications for interpreting observed data are discussed.</p> </P>

Preparation of red nitride phosphor from powder mixture of metal nitrides using spark plasma sintering

Trinh, H.Q.,Jo, J.O.,Lee, S.B.,Mok, Y.S. Elsevier 2014 CURRENT APPLIED PHYSICS Vol.14 No.8

A red nitride phosphor with a chemical formula: (Sr<SUB>0.8</SUB>Ca<SUB>0.2</SUB>)AlSiN<SUB>3</SUB>:Eu<SUB>0.0075</SUB><SUP>2+</SUP> was successfully synthesized using spark plasma sintering at a temperature of 1680 <SUP>o</SUP>C from powder mixture of metal nitrides of Sr, Ca, Al, and Si and europium (III) oxide. The prepared phosphor showed a wide excitation band ranging from 300 to 550 nm and a broad emission band centered at a wavelength of about 618 nm, being suitable for use in down-conversion white LEDs. The effects of sintering temperature, holding time as well as uniaxial pressure on phosphor characteristics were investigated. Increasing the sintering temperature increased the crystallization and PL characteristics of the phosphor. The excitation and emission intensity of the phosphor was also affected by the holding time at the maximum temperature. When the synthesis was carried out at 1680 <SUP>o</SUP>C and 30 MPa, the optimal holding time was around 30 min. Increasing the uniaxial pressure resulted in the improvement of the excitation and emission intensity. The optical properties of the phosphor synthesized at an increased uniaxial pressure of 42 MPa (1680 <SUP>o</SUP>C for 30 min) was comparable to those of the commercial phosphor. The experimental results indicated that the spark plasma sintering method is a viable method to prepare nitride phosphors at relatively low temperatures in short synthesis time, compared to conventional methods.

The synergistic effects of clopidogrel with montelukast may be beneficial for asthma treatment

Trinh, Hoang Kim Tu,Nguyen, Thuy Van Thao,Choi, Youngwoo,Park, Hae‐,Sim,Shin, Yoo Seob John Wiley and Sons Inc. 2019 JOURNAL OF CELLULAR AND MOLECULAR MEDICINE Vol.23 No.5

<P><B>Abstract</B></P><P>Platelets modulate asthma pathogenesis by forming the platelet‐eosinophil aggregation (PEA), which facilitates the activation of eosinophils. Platelets exhibit the purinergic receptor (P2Y12R), which responds to cysteinyl leukotriene E4 (LTE<SUB>4</SUB>). We have suggested that the combination of an antiplatelet drug (clopidogrel, [Clo]) and montelukast (Mon) would synergistically suppress asthma. BALB/c mice were intraperitoneally sensitized with ovalbumin (OVA) on days 0 and 14 and subsequently challenged on days 28‐30 and 42‐44. Mice were administered with Clo (10 mg/kg), Mon (10 mg/kg) or both drugs (Clo/Mon) orally 30 minutes before the OVA (1%) challenge on days 42‐44. Mice were assayed for airway hyper‐responsiveness (AHR) to methacholine and airway inflammation. Clopidogrel and montelukast attenuated the increased AHR; the combined treatment was more effective than a single treatment for total and eosinophil counts (all <I>P < </I>0.05). Levels of interleukin (IL)‐4, IL‐5, IL‐13, platelet factor 4, eosinophil peroxidase and LTE<SUB>4</SUB> increased in the bronchoalveolar lavage fluid of asthmatic mice, but these levels decreased in mice treated with Clo/Mon (all <I>P < </I>0.05). Goblet cell hyperplasia decreased in response to Clo/Mon. Mouse platelets and eosinophils were isolated and co‐cultured for an in vitro assay with 10 µmol/L adenosine diphosphate (ADP), LTE<SUB>4</SUB> (200 nmol/L), Mon (1 µmol/L), Clo (1 µmol/L) and Clo/Mon (1 µmol/L). Flow cytometry revealed that the increased formation of the PEA (%) was fully mediated by ADP and partly mediated by LTE<SUB>4</SUB>. Clo/Mon reduced ADP‐induced PEA formation and P‐selectin expression (<I>P < </I>0.05). In conclusion, Clo/Mon synergistically relieved asthma by inhibiting ADP‐mediated PEA formation.</P>

Waveguide Slot Array Antenna with a Hybrid-Phase Feed for Grating Lobe Reduction

Trinh-Van, Son,Song, Sung Chan,Seo, Seung-Hee,Hwang, Keum Cheol Hindawi Limited 2016 International journal of antennas and propagation Vol.2016 No.-

<P>The design of a 112-element millimeter-wave waveguide slot array antenna to reduce the grating lobe level is presented. A hybrid-phase feeding technique combining a cophase feed and an alternating-phase feed is applied to facilitate the suppression of grating lobes. In addition, a stepped feed waveguide and offset coupling slots aligned in a line are employed to realize a tapered aperture distribution. As a result, grating lobe suppression of 8.1 dB was achieved on the diagonal planes compared to a conventional alternating-phase-fed waveguide slot array antenna. A prototype of the proposed antenna was fabricated and measured. The measured results show that the proposed antenna exhibits a −15 dB reflection bandwidth of 3.4%and an average realized gain of 26.72 dBi within the measured frequency range. Good agreement between the simulated and measured radiation patterns is also observed.</P>