Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2020

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 165061 - 165090 of 169292

Full-Text Articles in Entire DC Network

Analysis Of Chewing Efficiency In Dementia Patients Using Two-Color Chewing Gum Test And The Viewgum Software, Chawisa Thangjittiporn Jan 2020

Analysis Of Chewing Efficiency In Dementia Patients Using Two-Color Chewing Gum Test And The Viewgum Software, Chawisa Thangjittiporn

Chulalongkorn University Theses and Dissertations (Chula ETD)

The purpose of this study was to analyze the relationship between chewing efficacy and severity level of cognitive impairment in dementia patients using a smartphone with ViewGum software for chewing efficiency analysis. Participants (n=70) from the Dementia Clinic, King Chulalongkorn Memorial Hospital, included 38 dementia patients (76.1±9.0 years) and 32 patients (71.8±9.9Years) with mild cognitive impairment (MCI), diagnosed by the medical specialists. The cognitive impairment was assessed by the TMSE (Thai Mental State Examination), and then scored. Participants were assessed for chewing efficacy using the mixing ability test of the two-color chewing gum, followed by an analysis using the ViewGum …

Go to article

Biological Effects Of Epigallocatechin Gallate During The Protection Of The Submandibular Gland After Injury, Erni Sulistiyani Jan 2020

Biological Effects Of Epigallocatechin Gallate During The Protection Of The Submandibular Gland After Injury, Erni Sulistiyani

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: When radiotherapy is delivered to head and neck cancer (HNC) patients, the salivary gland (SG) secretory epithelia can be irreversibly injured in up to 60% of the individuals, leading to dry mouth or xerostomia. Radiotherapy’s effectiveness in suppressing HNC growth is correlated with an increase in free radicals that produce DNA damage to the tumor and neighboring organs like the SG. Epigallocatechin gallate (EGCG) is one of the most abundant polyphenols present in green tea leaves and a well-known antioxidant. In previous in vitro study using genetically modified immortal SG cell lines, EGCG protected SG cells from γ-radiation. However, …

Go to article

Development Of Measurement Scales Of Consumer-Based Brand Equity For Small And Medium Enterprises, Nitcha Chokpitakkul Jan 2020

Development Of Measurement Scales Of Consumer-Based Brand Equity For Small And Medium Enterprises, Nitcha Chokpitakkul

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study had two research objectives: (1) to develop and validate a generalizable model for measuring consumer-based brand equity within the SME setting, and (2) to examine the relationship between SME brand equity and consumer response factors. Three steps were conducted in sequence to achieve the research purposes. Firstly, qualitative data from documents of forty awarded SME brands and actual consumers varying in their demographic characteristics were collected by three techniques including document analysis, semi-structured interview, and focus group to get a pool of 41 initial items of SME brand equity. Secondly, the items derived from the first step were …

Go to article

Histone Deacetylase Inhibitor Induces The Odontogenic Differentiation In Human Dental Pulp Cells: Comparison Of Trichostatin A (Tsa) And Suberoylanilide Hydroxamic Acid (Saha), Indrani Sulistyowati Jan 2020

Histone Deacetylase Inhibitor Induces The Odontogenic Differentiation In Human Dental Pulp Cells: Comparison Of Trichostatin A (Tsa) And Suberoylanilide Hydroxamic Acid (Saha), Indrani Sulistyowati

Chulalongkorn University Theses and Dissertations (Chula ETD)

Human dental pulp cells (hDPCs) have shown their plasticity to differentiate into odontoblast-like cell lineages under the treatment of two-members of hydroxamates HDAC inhibitors (HDACis), Trichostatin A (TSA) and Suberoylanilide hydroxamic acid (SAHA). However, a comparison of the potency for stimulating odontoblast-like differentiation and mineralization process among these two HDACis has not been reported. Therefore, we aimed to confirm and compare the stimulatory effect of TSA and SAHA in inducing odontoblast-like differentiation and promoting mineralized-nodule formation. The primary cultured hDPCs was used for MTT assay, ALP activity assay, and alizarin red staining in the presence and absence of TSA and …

Go to article

Gene Expression And Immunohistochemistry Analysis Of Xenograft And Allograft In Maxillary Sinus Floor Augmentation, Isaya Kungvarnchaikul Jan 2020

Gene Expression And Immunohistochemistry Analysis Of Xenograft And Allograft In Maxillary Sinus Floor Augmentation, Isaya Kungvarnchaikul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Quality of bone is an important factor contributing to the success of dental implants. The bone height in maxillary posterior area sometimes is not enough and might pose risks for placing dental implants. Maxillary sinus augmentation with bone substitutes is used for filling and correcting bony defects. This study aims to determine the differences in gene expressions of TNF-alpha, RUNX2, COL1A1, ALP between xenograft (Bio-Oss®) and allograft (SureOss®). Patients who needed two-stage maxillary sinus floor augmentation were included (n=13). Patient who had dental implant at posterior maxilla without bone substitutes was also used in immunohistochemistry analysis (IHC) (n=1). Bone samples …

Go to article

Effect Of Deep Margin Elevation With Resin Composite And Resin-Modified Glass Ionomer On Marginal Sealing Of Cad/Cam Ceramic Inlays: An In Vitro Study, Jaraswan Vichitgomen Jan 2020

Effect Of Deep Margin Elevation With Resin Composite And Resin-Modified Glass Ionomer On Marginal Sealing Of Cad/Cam Ceramic Inlays: An In Vitro Study, Jaraswan Vichitgomen

Chulalongkorn University Theses and Dissertations (Chula ETD)

Purpose. To evaluate the marginal sealing ability of different restorative materials used in deep margin elevation (DME) on zirconia-reinforced lithium silicate CAD/CAM ceramic restoration. Methods. A total of 30 Class II cavities were prepared in freshly extracted human molars with the proximal gingival margin located 1 mm below the cemento-enamel junction (CEJ). All specimens were randomly assigned to one of three groups (n=10): control group, resin composite group (FiltekTM Z350 XT), and resin-modified glass ionomer group (VitremerTM Tricure). In group 1, control group, no DME was performed. The inlay margin of the control group was placed directly onto dentin. In …

Go to article

The Immunomodulatory Roles Of Supracrestal Gingival Connective Tissue-Derived Human Mesenchymal Stromal Cells In The Polarization Of Macrophages, Jirawit Inthayat Jan 2020

The Immunomodulatory Roles Of Supracrestal Gingival Connective Tissue-Derived Human Mesenchymal Stromal Cells In The Polarization Of Macrophages, Jirawit Inthayat

Chulalongkorn University Theses and Dissertations (Chula ETD)

MSCs exert their immunomodulatory effects on various immune cells by cell-cell contact and cytokines secretion. Our previous study has demonstrated that supracrestal gingival connective tissue-derived mesenchymal stem cells (SG-MSCs) were recognized to be a good candidate for periodontal regeneration. SG-MSCs showed the similar potential to PDL-MSCs and held significant advantage over PDL-MSCs by which a tooth extraction is not required. In terms of immunomodulatory properties, the effect of SG-MSCs on macrophage has never been explored. This study was aimed to investigate the effects of SG-MSCs on macrophages by cocultured SG-MSCs and THP-1-derived macrophages (THP-1-MPs) in direct cell-cell contact condition. Briefly, …

Go to article

Effect Of Trehalose Solution Spray On Post-Radiation Xerostomia Related Quality Of Life In Head And Neck Cancer Patients, Kulpriya Pravinvongvuthi Jan 2020

Effect Of Trehalose Solution Spray On Post-Radiation Xerostomia Related Quality Of Life In Head And Neck Cancer Patients, Kulpriya Pravinvongvuthi

Chulalongkorn University Theses and Dissertations (Chula ETD)

Radiotherapy is the standard treatment of head and neck cancer (HNC). The radiation may affect on normal tissue and surrounding salivary gland resulting to xerostomia. Treatment of radiation-related xerostomia focuses on relieving symptoms by using saliva substitutes or saliva stimulants. Because the salivary stimulants have significant side effects, such as sweating, dizziness or increasing urge to urinate, saliva substitutes are preferable. Trehalose solution has been suggested for improve moisture in dry mouth condition and can be used as saliva substitute. The purpose of this study is to evaluate the effectiveness of 10% Trehalose solution spray to improve dry mouth condition …

Go to article

The Effect Of Laser Power On Mechanical And Physical Properties Of Ti-6al-4v Eli Fabricated By Selective Laser Melting, Pajaree Termrungruanglert Jan 2020

The Effect Of Laser Power On Mechanical And Physical Properties Of Ti-6al-4v Eli Fabricated By Selective Laser Melting, Pajaree Termrungruanglert

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to examine the differences in mechanical and physical properties of Ti-6Al-4V extra low interstitial (ELI) fabricated by selective laser melting (SLM) between different laser power. The Ti-6Al-4V ELI alloy samples were printed in dumbbell shape by SLM machine (Trumpf/TruPrint 1000, Germany) with 3 laser powers (75, 100 and 125 W), 8 samples for each group. And the other parameters (spot size 30 µm, scanning speed 600 mm/s, layer thickness 30 µm) were kept constantly. All samples were performed under tensile test with universal testing machine. Moreover, The microhardness test was performed. All data were statistically analyzed with …

Go to article

Effect Of Chlorhexidine Gluconate On Dentin Carious Lesion In Vitro, Patcharanun Borompiyasawat Jan 2020

Effect Of Chlorhexidine Gluconate On Dentin Carious Lesion In Vitro, Patcharanun Borompiyasawat

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective:The purpose of this study were to compare mean mineral density(MMD) and examine the remineralized pattern of carious dentin after cavity disinfectant with chlorhexidine gluconate (CHX) and restore with H-GIC in vitro. Materials and Methods: Selective caries removal to leathery dentin was performed in forty extracted primary molars. The samples were scanned using micro-computed tomography (micro-CT) as the MMD baseline and randomly divided into 4 groups: Group A (n=10) applied dentin conditioner and restored with H-GIC (Equia Forte™), Group B (n=10) disinfected the cavity with 2% CHX for 1 minute before applied dentin conditioner and restored with H-GIC (Equia Forte™), …

Go to article

The Influence Of Fatigue Load To Various Adhesive Resin Luting Agents In A Zirconia-Reinforced Lithium Silicate Ceramic Bonded To Dentin, Ratikorn Watananiyom Jan 2020

The Influence Of Fatigue Load To Various Adhesive Resin Luting Agents In A Zirconia-Reinforced Lithium Silicate Ceramic Bonded To Dentin, Ratikorn Watananiyom

Chulalongkorn University Theses and Dissertations (Chula ETD)

Purpose. To examine fatigue failure load value of etch-and-rinse and self-adhesive luting systems used to bond ZLS to dentin. Moreover, this study seeks to evaluate whether the application of unfilled resin on silanated ceramic intaglio surface could improve fatigue failure load value. Methods. Vita Suprinity (VS, Vita Zahnfabrik) blocks were sectioned into cylindrical shape (5 mm in diameter and 1.5 mm in height). All VS were crystallized, and bonded surfaces were treated as followed: Heliobond (HB, Ivoclar Vivadent) application after silanization and non-application of HB. Each VS was cemented to each flat occlusal dentin surface of extracted human molar, following …

Go to article

The Stains Of Various Lipsticks On Maxillary Anterior Ceramic Veneers, Ratirat Chotipanvidhayakul Jan 2020

The Stains Of Various Lipsticks On Maxillary Anterior Ceramic Veneers, Ratirat Chotipanvidhayakul

Chulalongkorn University Theses and Dissertations (Chula ETD)

This clinical study aims to determine differences in lipstick stains between ceramic veneers and natural teeth. Types of lipsticks affected lipstick stains on ceramic veneers and natural teeth were also investigated. A total of 30 patients were divided into two groups: ceramic-veneer (CV) group and natural-teeth (NT) group with 15 patients in each group. Seven lipstick types: Gloss & Balm, Gloss & Sheer, Cream, Liquid matte, Matte & Frost, Satin, and Matte were applied on patients’ lips. Six labial surfaces of maxillary anterior teeth were evaluated for the frequency of lipstick staining with each type of lipstick. Thus, 90 maxillary …

Go to article

Prevalence Of Enterococcus Faecalis And Candida Albicans In Teeth Requiring Endodontic Retreatment, Sopida Thipung Jan 2020

Prevalence Of Enterococcus Faecalis And Candida Albicans In Teeth Requiring Endodontic Retreatment, Sopida Thipung

Chulalongkorn University Theses and Dissertations (Chula ETD)

Endodontic failures are mainly caused by persistence of microorganisms in the root canal system. Enterococcus faecalis has been reported as the most commonly isolated species from root canals with endodontic treatment failure in many studies, but was not the dominant species in others. Recent studies showed that Candida albicans is found together with Enterococcus faecalis within infected root canals in a polymicrobial community and both species can form biofilm. Therefore, this study aims to investigate the prevalence of Enterococcus faecalis and/or Candida albicans in root canals requiring retreatment by using both culture-based and polymerase chain reaction (PCR) techniques, and examine …

Go to article

Comparing Patient-Reported Outcome Measures Among 3 Methods Of Dental Implant Placement, Sunida Engkawong Jan 2020

Comparing Patient-Reported Outcome Measures Among 3 Methods Of Dental Implant Placement, Sunida Engkawong

Chulalongkorn University Theses and Dissertations (Chula ETD)

The purpose of this study was to compare patient-reported outcome measures including post-operative pain, swelling, patient's expectation and satisfaction among 3 techniques of dental implant placement including a) conventional freehand, b) dynamic, and c) static Computer-Aided Implant Surgery. Ninety patients were randomly assigned to receive dental implant placement with one of the 3 protocols. Participants were asked to fill in a series of self-administered questionnaires assessing 1) pre-operative expectations, 2) post-operative healing events during the first week after surgery, and 3) overall satisfaction with the procedures at two weeks. Eighty-eight patients completed the study, 2 patients in dynamic CAIS group …

Go to article

Effect Of Endothelin-1 On Cyclooxygenase-2 Gene Expression And Prostaglandin E2 Synthesis In Human Periodontal Fibroblasts, Supachai Unmanatakoon Jan 2020

Effect Of Endothelin-1 On Cyclooxygenase-2 Gene Expression And Prostaglandin E2 Synthesis In Human Periodontal Fibroblasts, Supachai Unmanatakoon

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objective of this study is to clarify the effect of endothelin-1 on COX-2 mRNA expression and PGE2 production from human periodontal ligament fibroblasts. Effect of various concentration of ET-1 on cell viability of primary human periodontal ligament fibroblasts was determined by an MTT assay. Then, primary human periodontal ligament fibroblasts were treated with 10 pM ET-1 for 0.5, 1, 2, 4 hours to investigate the time-course effect. Furthermore, to investigate the dose-response effect, periodontal ligament fibroblasts were treated with 1, 10, 100 pM ET-1 for 1 hour. The untreated cells were set as control. RNA extraction followed by cDNA …

Go to article

Assessing Treatment Outcomes From The Postgraduate Orthodontic Program, Chulalongkorn University, Tanyapak Kongboonvijit Jan 2020

Assessing Treatment Outcomes From The Postgraduate Orthodontic Program, Chulalongkorn University, Tanyapak Kongboonvijit

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: To evaluate the quality of orthodontic treatment outcomes by using Peer Assessment Rating index (PAR), American Board of Orthodontics Objective Grading System (ABO-OGS) and lateral cephalometric analysis in the cases completed from the postgraduate orthodontic clinic, Chulalongkorn University. And to determine whether any contributing factors correlate with the orthodontic treatment outcomes. Materials and Methods: 100 patients who had completed treatment since 2017 were included in this study. Inclusion criteria included patients with full upper and lower edgewise appliances and completed treatment records. Exclusion criteria included patients with craniofacial syndromes or debond before treatment completion. One calibrated examiner assessed DI, …

Go to article

Retention Force And Wear Characteristic Of Ball And O-Ring Attachment In Chulalongkorn Mini-Implant Overdenture System., Thanakorn Thimkam Jan 2020

Retention Force And Wear Characteristic Of Ball And O-Ring Attachment In Chulalongkorn Mini-Implant Overdenture System., Thanakorn Thimkam

Chulalongkorn University Theses and Dissertations (Chula ETD)

The purpose of this experimental study was to evaluate wear characteristics and retention force of the RetenDent mini-implant overdenture system (Chulalongkorn product) after the insertion-removal fatigue test. One-piece mini-implants attachment system for overdenture, Osstem MS denture® type implant (OSSTEM, Germany GmbH), and RetenDent mini-implant were tested. All samples were subjected to repeated insertion and removal fatigue cycles by the universal testing machine (E1000, INSTRON Instrument, England). Subjected fatigue cycles were 5500 with 1.00Hz frequency to mimic a 5-year insertion and removal three times per day. The retention force was measured by separating the O-ring from the abutment and recorded with …

Go to article

Influence Of Demineralized Dentin On Marginal Seal Using Primerless Wet Bonding Technique: In-Vivo Study, Thanyarat Lerttriphob Jan 2020

Influence Of Demineralized Dentin On Marginal Seal Using Primerless Wet Bonding Technique: In-Vivo Study, Thanyarat Lerttriphob

Chulalongkorn University Theses and Dissertations (Chula ETD)

The purpose of this study was to compare microleakage distance between Class V restorations and tooth interface when using either 4-META-MMA/TBB or MMA/TBB resin adhesives by using 1 % ferric chloride in 1% citric acid (1-1) for conditioning periods of 10s (1-1-10s) 30s (1-1-30s) and 60s (1-1-60s) for in-vivo study. Material and methods: A total of 60 Class V box cavities were divided into 6 groups of 10 specimens (n= 10) on the caries-free, vital, and hopeless periodontally-compromised teeth, scheduled for extraction. A Class V cavity (3mm × 3mm × 1.5mm) was prepared on the buccal or lingual surface located …

Go to article

Microrna Profiles Associated With Bone Healing Of The Extraction Socket In Bisphosphonate Related Osteonecrosis Of The Jaw In Rat Model, Thapakorn Surajkulwatana Jan 2020

Microrna Profiles Associated With Bone Healing Of The Extraction Socket In Bisphosphonate Related Osteonecrosis Of The Jaw In Rat Model, Thapakorn Surajkulwatana

Chulalongkorn University Theses and Dissertations (Chula ETD)

Bisphoshonates (BPs) are widely used for treating osteoporosis, multiple myeloma, breast cancer, and bone metastasis cancer. Trauma or tooth extraction in patients treated with BPs can lead to MRONJ development because of its mechanism of action by which interferes bone homeostasis and angiogenesis. Once MRONJ has occurred, this hard-to-cure disease posed the risk of having poor quality of life to the patients. The application of miRNA for curing the diseases is now being of interest in medical field. Aiming at elucidating the role of miRNAs in the pathogenesis of MRONJ, a rat model was used in creating MRONJ and the …

Go to article

The Overall Esthetic Assessment Of Anterior Single-Tooth Implant Restoration Using Esthetic Sustainable Criteria In 5-Year Clinical Cross-Sectional Study, Tharitsawan Sangprasertkul Jan 2020

The Overall Esthetic Assessment Of Anterior Single-Tooth Implant Restoration Using Esthetic Sustainable Criteria In 5-Year Clinical Cross-Sectional Study, Tharitsawan Sangprasertkul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: To compare the esthetic score (using the Esthetic Sustainable Criteria) among titanium, zirconia and gold alloy abutments of single tooth implant in 5 years follow up. Mateirals and Methods: 24 patients who were treated with single anterior implant at Faculty of Dentistry, Chulalongkorn University were recruited. There were 8 patients for each abutment material. Demographic data, biological parameters such as modified plaque index (mPI), modified sulcus bleeding index (mSBI), probing depth (PD), radiographic images (Periapical films and CBCT images) were collected. The esthetic score (gingival, prosthodontic and bone score) was evaluated according to the Esthetic Sustainable Criteria. The mean …

Go to article

Comparative Gene Expression Analysis Of Human Dental Pulp Cells From Maxillary And Mandibular Teeth, Thira Faruangsaeng Jan 2020

Comparative Gene Expression Analysis Of Human Dental Pulp Cells From Maxillary And Mandibular Teeth, Thira Faruangsaeng

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective : Given the anatomical and locational differences between the maxillary and mandibular teeth, it is possible that there are differences in gene expression patterns of dental pulp cells within those teeth. This study evaluates and compares the gene expression profiles of the maxillary and mandibular human teeth with the aim of finding differences in gene expression patterns of dental pulp cells by RNA-Sequencing technique. Methods : The upper and lower premolar and molar teeth obtained from the same participant were employed. Two pairs of opposing premolar teeth and two pairs of opposing molar teeth were isolated, cultured, and subjected …

Go to article

Effect Of Ultrasonic Treatment On The Transverse Strength Of Relined Denture Base With Autopolymerizing Acrylic Hard Reline Material, Tithiporn Arunwichit Jan 2020

Effect Of Ultrasonic Treatment On The Transverse Strength Of Relined Denture Base With Autopolymerizing Acrylic Hard Reline Material, Tithiporn Arunwichit

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study evaluated the effect of ultrasonic treatment and surface treatments on transverse strength of denture bases which relined with auto-polymerizing acrylic resin. The study groups, ninety heat-polymerized acrylic resins (64×10×2 mm) were divided by three surface treatments: no surface treatment (N), applied MMA for 180 seconds (MM), applied MF-MA for 15 seconds (MF). They were relined with auto-polymerized acrylic resin to create 64×10×3.3 mm specimens. Then, they were divided further by ultrasonic which were no ultrasonic (X), ultrasonic in water (W), ultrasonic in 30% ethanol (E). As a result, all test groups were classified as NX, NW, NE, MMX, …

Go to article

Bcl-Xl Expression In Osteoclasts Of Patients With Medication-Related Osteonecrosis Of The Jaw: A Comparison With Osteoradionecrosis And Osteomyelitis, Vy Tran Ngoc Thuy Jan 2020

Bcl-Xl Expression In Osteoclasts Of Patients With Medication-Related Osteonecrosis Of The Jaw: A Comparison With Osteoradionecrosis And Osteomyelitis, Vy Tran Ngoc Thuy

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: The pathological mechanism of medication-related osteonecrosis of the jaw (MRONJ) is still unknown now. Osteoclasts are cells directly influenced by MRONJ, which might be the key mediator of pathological mechanism. This study aimed to evaluate the histological features of MRONJ, investigate the morphology and quantity of osteoclasts in MRONJ as well as expression of Bcl-xl, and compare it with ORN, OM, and normal jaw bone. Methods: In this study, 57 subjects, including patients with MRONJ, osteoradionecrosis of the jaw (ORN), osteomyelitis of the jaw (OM), and normal jaw bone were studied. Hematoxylin and eosin-stained slides of these diagnosed cases …

Go to article

Effect Of Desensitizing Toothpaste Containing Calcium Sodium Phosphosilicate On Microtensile Bond Strength Of Adhesive Systems, Warin Sittiwaitayaporn Jan 2020

Effect Of Desensitizing Toothpaste Containing Calcium Sodium Phosphosilicate On Microtensile Bond Strength Of Adhesive Systems, Warin Sittiwaitayaporn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Purpose: To evaluate the effect of a desensitizing toothpaste, containing calcium sodium phosphosilicate, on microtensile bond strength of adhesive systems treated to dentine. Methods: Fifty-two human third molars were embedded into acrylic resin, and cut to expose flat dentin surface. The specimens were randomly divided into two groups, 1) no brushing, and 2) brushing with Sensodyne Repair&Protect (GSK, London, UK) for 10,000 cycles with a V-8 cross brushing machine (Sabri Dental Enterprise, Inc., USA). Subsequently, both groups were divided into three groups for resin composite build-up using different adhesive agents (OptiBond FL® (Kerr, Orange, CA, USA), Clearfil SE Bond® (Kuraray …

Go to article

Technical And Scale Efficiency Of Public Hospitals In Papua New Guinea, James Noah Jan 2020

Technical And Scale Efficiency Of Public Hospitals In Papua New Guinea, James Noah

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objective of the study was to estimate the relative technical efficiency of public hospitals in PNG and estimate the magnitudes of output increases and/or input reductions that would have been required to make relatively inefficient hospitals more efficient using Data Envelopment Analysis for 20 hospitals in PNG using the data for 2017. The study is further extended using the Tobit regression analysis to investigate the institutional and contextual factors on hospital efficiencies. The results of the output-oriented DEA BCC Model indicated that the average constant returns to scale technical efficiency score was 79%; the average variable returns to scale …

Go to article

The Effect Of Bank Competition On Bank Stability In Thailand, Kamolwan Yamploy Jan 2020

The Effect Of Bank Competition On Bank Stability In Thailand, Kamolwan Yamploy

Chulalongkorn University Theses and Dissertations (Chula ETD)

This research studies the impact of competition on bank stabilities, which are capital adequacy, non-performing loans ratio, interest income risk, and non-interest income risk. Lerner index is used to proxy degree of non-structural bank competition. We use data on 11 Thai commercial banks from the year 2010 to 2018 and employ Panel Least Square regression. Our results show that banks with higher market power tend to have lower risk lending behaviors. As a result, this allows them to have lower level of capital and higher level of risk in non-interest income activities. On the other hand, higher concentration ratio 5, …

Go to article

The Relationship Between Greenhouse Gas Emission And Rice Production In Thailand, Kitsada Vitidladda Jan 2020

The Relationship Between Greenhouse Gas Emission And Rice Production In Thailand, Kitsada Vitidladda

Chulalongkorn University Theses and Dissertations (Chula ETD)

Climate Change has been a global concern for decades. The phenomenon is mainly caused by human activities, including rice production. Although the agricultural activity can adversely emit greenhouse gas emission, it is also vital to Thai economy for a long time as well. This study has two objectives. The first objective is to examine the relationship between greenhouse gas emission and rice production in Thailand to evaluate the balance between economic and environmental aspects. The second objective is to study rice farming practices that can balance between greenhouse gas emission mitigation and rice farmers' income. For the first objective, secondary, …

Go to article

Determinants Of Health Promotion Service Consumption In Thailand, Pimpa Vitidladda Jan 2020

Determinants Of Health Promotion Service Consumption In Thailand, Pimpa Vitidladda

Chulalongkorn University Theses and Dissertations (Chula ETD)

Despite being preventable, noncommunicable diseases (NCDs) rank among leading causes of death in Thailand. Four main groups of NCDs involve cardiovascular diseases, cancers, chronic respiratory diseases, and diabetes. These chronic diseases worsen economic burden and the quality of life. To ease the burden, health promotion service is one of the tools that can directly cope with risk factors of NCDs. Therefore, increasing health promotion service consumption potentially leads to risk reduction of an individual to develop NCDs. Hence, this research aims to identify the factors influencing health promotion service consumption in Thailand along with marginal effects of each factors. The …

Go to article

Factors Influencing The Foreign Direct Investmet Inflow In Tourism Industry In Thailand, Pitchapa Tubtimtong Jan 2020

Factors Influencing The Foreign Direct Investmet Inflow In Tourism Industry In Thailand, Pitchapa Tubtimtong

Chulalongkorn University Theses and Dissertations (Chula ETD)

Tourism industry has been considered as an important part of the Thai economy since tourism helps support many tourism businesses, increase employment, and compensate for other industries presenting weak growth, which will generate high income for Thailand continuously. This paper employs multiple regression by using Ordinary Least Squares (OLS) method to investigate factors influencing Foreign Direct Investment (FDI) inflows in tourism industry in Thailand over the period 2000 - 2019, especially the effect of tourism- induced factors on FDI inflows including growth of tourism industry, tourism average spending, and tourism demand volume. Quarterly data using in this paper is based …

Go to article

Determinants Of Cross-Border Mergers And Acquisitions Of Firms In Thailand, Pongpak Weerakiet Jan 2020

Determinants Of Cross-Border Mergers And Acquisitions Of Firms In Thailand, Pongpak Weerakiet

Chulalongkorn University Theses and Dissertations (Chula ETD)

In this paper, we evaluate the effects of firm-level and country-level variables on the firms' probability of having cross-border M&A deals and the size of the deals. Our sample consists of 87 firms from SET100 Index (firms from financial industry are excluded), and the data between 2009 to 2018 is used in this paper. The results indicate that the increase in ownership advantages of the firms, namely, size and profitability raise the chance of the firms having cross-border M&A deals and the size of the deals. For country-level variables, the results agree with the gravity model that an increase in …

Go to article

First Prev Next Last