Objectives of the Study The purpose of this study is to examine effects of different types of sca... more Objectives of the Study The purpose of this study is to examine effects of different types of scarcity messages on consumer purchase intention in the context of electronic commerce. The study also investigates the moderating roles of several individual-difference variables. Academic background and methodology Prior research has demonstrated effects of scarcity on consumer purchase intention in many aspects. Only a few studies, however, have examined scarcity effects in the context of electronic commerce, where the ease of searching for alternative online deals may change the effectiveness of scarcity messages. Thus, it is critical to gain insights into how different types of scarcity messages influence consumer purchase intention in online shopping. Specifically, the study compares effects of scarcity between two contexts of e-commerce: high versus low ease of searching for deals. Accordingly, an online-survey experiment was conducted. The participants of the survey were exposed to two contexts. In each context, they were randomly allocated into one of six conditions containing different types of scarcity messages. Their purchase intentions were measured and investigated in order to figure out variances between conditions in each searching-ease context and the differences between two contexts. Additionally, the study examined the interaction between scarcity and three potential moderators of scarcity effects: uncertainty avoidance, need for cognitive closure, and product familiarity, of which their moderating roles were demonstrated in prior research. Findings and conclusions The study results showed that in the context of electronic commerce, scarcity messages became less effective. In the context of high searching-ease, no significant effect of scarcity was found. In the context of low searching-ease, only the scarcity message in form of intensive time limit, in association with a signal of price promotion, presented a significant effect on consumer purchase intention. Additionally, contrary to the findings of prior research, three investigated moderators showed no significant interaction with scarcity. This outcome suggested that to explain the underlying factors of scarcity effects in the context of e-commerce, other mediators should be considered. This finding is significant for managers who intend to use scarcity as a marketing tool for their online businesses. The result also contributes to the research area of scarcity effects.
This study is concerned with one of the most important issues of any economy, the inflation matte... more This study is concerned with one of the most important issues of any economy, the inflation matter. In recent years, inflation in Vietnam has been under an upward trend. Inflation threatened Vietnamese economy twice within a short four year period. Not only the people but also enterprises are anxious about possible disadvantages caused by inflation. Among businesses, small and medium-sized enterprises (SMEs) are believed to suffer most severely from the escalation of prices. The biggest problem of SMEs is the serious lack of information about difficulties they may confront during an inflationary period. The main aim of this thesis is to clarify the potential effects of inflation on SMEs. In order to achieve this goal, theoretical background of inflation, current context of inflation in Vietnam and information about the Case Company are studied. The method used in this thesis is qualitative, with an inductive approach. In the theoretical framework, data are collected mostly from published sources such as books, articles and relevant studies. In the empirical part, data are collected from personal observation, Vietnamese government publications, journals and interviews with the director of the Case Company. In the conclusion, implications of the findings and recommendations for further research are given. There are also several suggestions that managers of SMEs may apply to their own cases, in order to prevent negative impacts of inflation and limit the losses that may occur.
As a substitute for synthetic organic-derived corrosion inhibitors, henna leaf powder from henna ... more As a substitute for synthetic organic-derived corrosion inhibitors, henna leaf powder from henna plants was investigated for their ability to inhibit corrosion on steel substrates in an acidic environment. The research results were assessed by weight loss measurements and electrochemical method. The results showed that, with a concentration of 1 g/L, henna leaf powder reduced the corrosion rate on the steel surface in 1 M HCl to 0,0025 mm/year. The corrosion inhibition efficiency measured by the polarization curve and electrochemical impedance spectroscopy (EIS) were 88,35% and 87,78%, respectively. With the ability to inhibit the corrosion of steel surfaces in acidic environments, henna leaf powder is considered a green natural extract, environmentally friendly, capable of replacing organic synthetic transmission inhibitors.
Commercial inoculants are often used to inoculate field-grown soybean in Europe. However, nodulat... more Commercial inoculants are often used to inoculate field-grown soybean in Europe. However, nodulation efficiencies in these areas are often low. To enhance biological nitrogen (N) fixation and increase domestic legume production, indigenous strains that are adapted to local conditions could be used to develop more effective inoculants. The objective of this study was to assess the ability of locally isolated Bradyrhizobium strains to enhance soybean productivity in different growing conditions of Northeast Germany. Three indigenous Bradyrhizobium isolates (GMF14, GMM36, and GEM96) were tested in combination with different soybean cultivars of different maturity groups and quality characteristics in one field trial and two greenhouse studies. The results showed a highly significant strain × cultivar interactions on nodulation response. Independent of the Bradyrhizobium strain, inoculated plants in the greenhouse showed higher nodulation, which corresponded with an increased N uptake t...
Nếu xem việc học tiếng Anh là xây nhà thì việc trau dồi từ vựng (TV) chính là xây nền móng bền vữ... more Nếu xem việc học tiếng Anh là xây nhà thì việc trau dồi từ vựng (TV) chính là xây nền móng bền vững cho căn nhà ấy. Tuy nhiên, vì nhiều lý do, các chiến lược (CL) trau dồi TV chưa được sinh viên Chuyên ngành (SVCN) sử dụng hiệu quả và hơn nữa mức độ sử dụng CL của SVCN cũng rất khác nhau. Bài nghiên cứu này nhằm điều tra thực trạng sử dụng CL học TV để mở rộng vốn TV và nâng cao khả năng sử dụng ngôn ngữ của SVCN trường ĐHNN-ĐHĐN. Trên cơ sở đó, có cái nhìn đúng đắn để đề xuất những kiến nghị phù hợp và hiệu quả.
Bài viết này nhằm giới thiệu kết quả nghiên cứu kiểm định sự tồn tại của hành vi bầy đàn (hay tâm... more Bài viết này nhằm giới thiệu kết quả nghiên cứu kiểm định sự tồn tại của hành vi bầy đàn (hay tâm lý bầy đàn) trên Sở Giao dịch Chứng khoán Hà Nội. Dữ liệu phục vụ nghiên cứu là chuỗi giá trị chỉ số HNX-Index và giá đóng cửa của các cổ phiếu giao dịch trên Sở Giao dịch Chứng khoán Hà Nội theo tần suất tuần từ 01 tháng 01 năm 2009 đến 30 tháng 06 năm 2015. Phương pháp độ lệch chuẩn theo không gian CSSD (Cross-sectional standard deviation) và phân tích hồi quy được sử dụng nhằm phân tích dữ liệu thu thập được. Kết quả nghiên cứu cho thấy có sự tồn tại của hiệu ứng bầy đàn trên Sở Giao dịch Chứng khoán Hà Nội.
One of the major goals of the porcine genome projects is building a physical map. To assign the p... more One of the major goals of the porcine genome projects is building a physical map. To assign the porcine genes encoding the complement components C6, C7, C8 and C9 to porcine chromosomes, we used a porcine 7000Rad Radiation Hybrid panel (IMpRH) containing 118 clones provided by INRA-University of Minnesota. It resulted in assignment of the porcine C6, C7 and C9 genes to chromosome 16q1.4, the porcine C8A and C8B genes to chromosome 6q3.1-q3.5 as well as the porcine C8G gene lonely to chromosome 1q2.13.
Simulation and physical implementation are both valuable tools in evaluating ad hoc network routi... more Simulation and physical implementation are both valuable tools in evaluating ad hoc network routing protocols, but neither alone is sufficient. In this paper, we present the design and performance of PRAN, a new system for the physical implementation of ad hoc network routing protocols that unifies these two types of evaluation methodologies. PRAN (Physical Realization of Ad hoc Networks) allows existing simulation models of ad hoc network routing protocols to be used-without modification-to create a physical implementation of the same protocol. We have evaluated the simplicity and portability of our approach across multiple protocols and multiple operating systems through example implementations in PRAN of the DSR and AODV routing protocols in FreeBSD and Linux using the standard existing, unmodified ns-2 simulation model of each. We illustrate the ability of the resulting protocol implementations to handle real, demanding applications by describing a demonstration with this DSR implementation transmitting real-time video streams over a multihop mobile ad hoc network; the demonstration features mobile robots being remotely operated based on the real-time video stream transmitted from the robot over the network. We also present a detailed performance evaluation of PRAN to show the feasibility of our architecture.
... nhập ấy, việc học ngoại ngữ trở thành một điều kiện tiên quyết, một chìa khóa dẫn đến ... hai... more ... nhập ấy, việc học ngoại ngữ trở thành một điều kiện tiên quyết, một chìa khóa dẫn đến ... hai khoa Khí tượng-Thủy văn-Hải dương (KT – TV – HD) tại Trường Đại học Khoa Học Tự ... nghiên cứu phương tiện liên kết ngữ pháp được sử dụng trong giáo trình tiếng Anh chuyên ngành ...
Objectives of the Study The purpose of this study is to examine effects of different types of sca... more Objectives of the Study The purpose of this study is to examine effects of different types of scarcity messages on consumer purchase intention in the context of electronic commerce. The study also investigates the moderating roles of several individual-difference variables. Academic background and methodology Prior research has demonstrated effects of scarcity on consumer purchase intention in many aspects. Only a few studies, however, have examined scarcity effects in the context of electronic commerce, where the ease of searching for alternative online deals may change the effectiveness of scarcity messages. Thus, it is critical to gain insights into how different types of scarcity messages influence consumer purchase intention in online shopping. Specifically, the study compares effects of scarcity between two contexts of e-commerce: high versus low ease of searching for deals. Accordingly, an online-survey experiment was conducted. The participants of the survey were exposed to two contexts. In each context, they were randomly allocated into one of six conditions containing different types of scarcity messages. Their purchase intentions were measured and investigated in order to figure out variances between conditions in each searching-ease context and the differences between two contexts. Additionally, the study examined the interaction between scarcity and three potential moderators of scarcity effects: uncertainty avoidance, need for cognitive closure, and product familiarity, of which their moderating roles were demonstrated in prior research. Findings and conclusions The study results showed that in the context of electronic commerce, scarcity messages became less effective. In the context of high searching-ease, no significant effect of scarcity was found. In the context of low searching-ease, only the scarcity message in form of intensive time limit, in association with a signal of price promotion, presented a significant effect on consumer purchase intention. Additionally, contrary to the findings of prior research, three investigated moderators showed no significant interaction with scarcity. This outcome suggested that to explain the underlying factors of scarcity effects in the context of e-commerce, other mediators should be considered. This finding is significant for managers who intend to use scarcity as a marketing tool for their online businesses. The result also contributes to the research area of scarcity effects.
This study is concerned with one of the most important issues of any economy, the inflation matte... more This study is concerned with one of the most important issues of any economy, the inflation matter. In recent years, inflation in Vietnam has been under an upward trend. Inflation threatened Vietnamese economy twice within a short four year period. Not only the people but also enterprises are anxious about possible disadvantages caused by inflation. Among businesses, small and medium-sized enterprises (SMEs) are believed to suffer most severely from the escalation of prices. The biggest problem of SMEs is the serious lack of information about difficulties they may confront during an inflationary period. The main aim of this thesis is to clarify the potential effects of inflation on SMEs. In order to achieve this goal, theoretical background of inflation, current context of inflation in Vietnam and information about the Case Company are studied. The method used in this thesis is qualitative, with an inductive approach. In the theoretical framework, data are collected mostly from published sources such as books, articles and relevant studies. In the empirical part, data are collected from personal observation, Vietnamese government publications, journals and interviews with the director of the Case Company. In the conclusion, implications of the findings and recommendations for further research are given. There are also several suggestions that managers of SMEs may apply to their own cases, in order to prevent negative impacts of inflation and limit the losses that may occur.
As a substitute for synthetic organic-derived corrosion inhibitors, henna leaf powder from henna ... more As a substitute for synthetic organic-derived corrosion inhibitors, henna leaf powder from henna plants was investigated for their ability to inhibit corrosion on steel substrates in an acidic environment. The research results were assessed by weight loss measurements and electrochemical method. The results showed that, with a concentration of 1 g/L, henna leaf powder reduced the corrosion rate on the steel surface in 1 M HCl to 0,0025 mm/year. The corrosion inhibition efficiency measured by the polarization curve and electrochemical impedance spectroscopy (EIS) were 88,35% and 87,78%, respectively. With the ability to inhibit the corrosion of steel surfaces in acidic environments, henna leaf powder is considered a green natural extract, environmentally friendly, capable of replacing organic synthetic transmission inhibitors.
Commercial inoculants are often used to inoculate field-grown soybean in Europe. However, nodulat... more Commercial inoculants are often used to inoculate field-grown soybean in Europe. However, nodulation efficiencies in these areas are often low. To enhance biological nitrogen (N) fixation and increase domestic legume production, indigenous strains that are adapted to local conditions could be used to develop more effective inoculants. The objective of this study was to assess the ability of locally isolated Bradyrhizobium strains to enhance soybean productivity in different growing conditions of Northeast Germany. Three indigenous Bradyrhizobium isolates (GMF14, GMM36, and GEM96) were tested in combination with different soybean cultivars of different maturity groups and quality characteristics in one field trial and two greenhouse studies. The results showed a highly significant strain × cultivar interactions on nodulation response. Independent of the Bradyrhizobium strain, inoculated plants in the greenhouse showed higher nodulation, which corresponded with an increased N uptake t...
Nếu xem việc học tiếng Anh là xây nhà thì việc trau dồi từ vựng (TV) chính là xây nền móng bền vữ... more Nếu xem việc học tiếng Anh là xây nhà thì việc trau dồi từ vựng (TV) chính là xây nền móng bền vững cho căn nhà ấy. Tuy nhiên, vì nhiều lý do, các chiến lược (CL) trau dồi TV chưa được sinh viên Chuyên ngành (SVCN) sử dụng hiệu quả và hơn nữa mức độ sử dụng CL của SVCN cũng rất khác nhau. Bài nghiên cứu này nhằm điều tra thực trạng sử dụng CL học TV để mở rộng vốn TV và nâng cao khả năng sử dụng ngôn ngữ của SVCN trường ĐHNN-ĐHĐN. Trên cơ sở đó, có cái nhìn đúng đắn để đề xuất những kiến nghị phù hợp và hiệu quả.
Bài viết này nhằm giới thiệu kết quả nghiên cứu kiểm định sự tồn tại của hành vi bầy đàn (hay tâm... more Bài viết này nhằm giới thiệu kết quả nghiên cứu kiểm định sự tồn tại của hành vi bầy đàn (hay tâm lý bầy đàn) trên Sở Giao dịch Chứng khoán Hà Nội. Dữ liệu phục vụ nghiên cứu là chuỗi giá trị chỉ số HNX-Index và giá đóng cửa của các cổ phiếu giao dịch trên Sở Giao dịch Chứng khoán Hà Nội theo tần suất tuần từ 01 tháng 01 năm 2009 đến 30 tháng 06 năm 2015. Phương pháp độ lệch chuẩn theo không gian CSSD (Cross-sectional standard deviation) và phân tích hồi quy được sử dụng nhằm phân tích dữ liệu thu thập được. Kết quả nghiên cứu cho thấy có sự tồn tại của hiệu ứng bầy đàn trên Sở Giao dịch Chứng khoán Hà Nội.
One of the major goals of the porcine genome projects is building a physical map. To assign the p... more One of the major goals of the porcine genome projects is building a physical map. To assign the porcine genes encoding the complement components C6, C7, C8 and C9 to porcine chromosomes, we used a porcine 7000Rad Radiation Hybrid panel (IMpRH) containing 118 clones provided by INRA-University of Minnesota. It resulted in assignment of the porcine C6, C7 and C9 genes to chromosome 16q1.4, the porcine C8A and C8B genes to chromosome 6q3.1-q3.5 as well as the porcine C8G gene lonely to chromosome 1q2.13.
Simulation and physical implementation are both valuable tools in evaluating ad hoc network routi... more Simulation and physical implementation are both valuable tools in evaluating ad hoc network routing protocols, but neither alone is sufficient. In this paper, we present the design and performance of PRAN, a new system for the physical implementation of ad hoc network routing protocols that unifies these two types of evaluation methodologies. PRAN (Physical Realization of Ad hoc Networks) allows existing simulation models of ad hoc network routing protocols to be used-without modification-to create a physical implementation of the same protocol. We have evaluated the simplicity and portability of our approach across multiple protocols and multiple operating systems through example implementations in PRAN of the DSR and AODV routing protocols in FreeBSD and Linux using the standard existing, unmodified ns-2 simulation model of each. We illustrate the ability of the resulting protocol implementations to handle real, demanding applications by describing a demonstration with this DSR implementation transmitting real-time video streams over a multihop mobile ad hoc network; the demonstration features mobile robots being remotely operated based on the real-time video stream transmitted from the robot over the network. We also present a detailed performance evaluation of PRAN to show the feasibility of our architecture.
... nhập ấy, việc học ngoại ngữ trở thành một điều kiện tiên quyết, một chìa khóa dẫn đến ... hai... more ... nhập ấy, việc học ngoại ngữ trở thành một điều kiện tiên quyết, một chìa khóa dẫn đến ... hai khoa Khí tượng-Thủy văn-Hải dương (KT – TV – HD) tại Trường Đại học Khoa Học Tự ... nghiên cứu phương tiện liên kết ngữ pháp được sử dụng trong giáo trình tiếng Anh chuyên ngành ...
Uploads
Papers by Khoa Tiếng Anh