277 research outputs found
Heterogeneity in behavioural response to pricing policies in the transition from motorcycles to private cars in motorcycle-based societies
No full textPricing instruments are widely seen as an effective tool for reducing the travel demand for private vehicles. In contrast to developed countries, the design of pricing policies in certain developing countries is more challenging, owing to the mixed use of private cars and motorcycles. This study argues for the existence of a transitional group of motorcycle users who will switch to being car users. An investigation of the behavioural responses to a pricing policy from private car users and motorcycle users is implemented in Ho Chi Minh City, Vietnam. A propensity score-matching technique is used to identify the transitional group. The results regarding the mode choice models for various pricing policies show similar responses between the transitional motorcycle users and car users. Such characteristics of the transitional group imply that ignorance of travellers' heterogeneity may cause significant bias, especially when modelling pricing policies.This research was financed by the Special Research Fund of Hasselt University.
Financial support in data collection: Ho Chi Minh City Institute for Development Studies (HIDS)
Author contribution: The authors confirm contribution to the paper as follows: study concept and design: Hoang Thuy Linh, Nguyen Hoang Tung, Vu Anh Tuan, Muhammad Adnan, and Tom Bellemans; data preparation, analysis, and interpretation of results: Hoang Thuy Linh; draft manuscript preparation: Hoang Thuy Linh, Nguyen Hoang Tung, and Muhammad Adnan. All authors reviewed the results and approved the final version of the manuscript
Methods for the 2016 Socioeconomic and Health Survey in Chi Linh Health and Demographic Surveillance System (CHILILAB HDSS)
No full text The Chi Linh Health and Demographic Surveillance System (CHILILAB HDSS) was established in 2004 in Chi Linh District, Hai Duong Province (Northern Vietnam). Up to 2013, 22 rounds of data collection at CHILILAB HDSS had been completed. This article reports the methods and key sociodemographic characteristics of households and individuals captured by the survey conducted among the subsamples of CHILILAB HDSS in 2016. We observed and compared them to the previous HDSS survey rounds and found no significant differences for household size and gender compositions in CHILILAB HDSS. The educational level and economic status of CHILILAB people in 2016 have improved. However, it can be seen that the Chi Linh population is undergoing a strong “aging” trend. </jats:p
ORGANIZING CULTURAL AND SPIRITUAL LIFE IN THE DEMOCRATIC REPUBLIC OF VIETNAM DURING THE WAR: THE CASE OF VINH LINH (1954–1975)
No full textThis study investigates the organization of cultural and spiritual life in Vinh Linh Special Zone, a frontline territory of the Democratic Republic of Vietnam from 1954 to 1975. Positioned adjacent to the 17th parallel, Vinh Linh endured severe wartime devastation while simultaneously serving as a strategic stronghold in the struggle for national liberation. Drawing upon archival sources, policy documents, and historical accounts, the research highlights how culture was mobilized as both a spiritual resource and a “soft weapon” to sustain resilience, foster patriotism, and reinforce collective identity. The findings demonstrate that cultural activities, ranging from education, literature, and arts to community rituals, were systematically organized to strengthen morale, unify the population, and support the broader mission of liberating the South and reunifying the nation. The case of Vinh Linh illustrates the enduring role of culture as a decisive factor in wartime society, reflecting the broader Vietnamese revolutionary perspective that culture constitutes one of the three essential fronts alongside politics and economics. This article contributes to the understanding of wartime cultural policy and underscores the significance of cultural resilience in contexts of prolonged armed conflict
Exploring the Spatial Transferability of FEATHERS – An Activity Based Travel Demand Model – For Ho Chi Minh City, Vietnam
No full textThis paper presents descriptive analyses to investigate the transferability of FEATHERS, an activity-based travel demand model developed for Flanders (Belgium), a region in a developed country to Ho Chi Minh City (Vietnam), a metropolitan area of a developing country using personal and household travel survey data. The transferability was tested by using indicators which represent individuals' activity and travel behaviors. The results confirm the transferability of FEATHERS modelling structure to Ho Chi Minh City (HCMC), but all sub-models require recalibration due to the different cultural settings between the two study areas. The differences in transport mode options, land use patterns and individuals' location choice preferences make transport mode and location choice the least transferable models. (C) 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the Conference Program Chairs.We would like to thank the JICA study team for their provision the data of METROS project.Linh, HT (corresponding author), UHasselt Univ Hasselt, Transportat Res Inst IMOB, B-3590 Diepenbeek, Belgium ; Univ Transport & Commun, Dept Civil Engn, Hanoi, Vietnam
ĐỘ LINH ĐỘNG CỦA KHÍ ĐIỆN TỬ HAI CHIỀU TỒN TẠI TRONG MGZNO/ZNO CÓ CÁC CẤU HÌNH TẠP KHÁC NHAU
No full textĐộ linh động của khí điện tử hai chiều (2DEG) tồn tại trong các cấu trúc dị chất chịu sự chi phối bởi nhiều yếu tố. Một trong những yếu tố đó là cấu hình tạp của chúng. Cấu hình tạp không những chi phối sự phân bố khí điện tử trong giếng lượng tử của cấu trúc dị chất mà nó còn ảnh hưởng đến độ linh động của khí điện tử. Để có hệ hạt tải hai chiều tồn tại trong cấu trúc dị chất có nồng độ cao người ta thường pha tạp cho hệ. Tuy nhiên, với hệ vật liệu MgZnO/ZnO không cần pha tạp, hệ điện tử tồn tại trong hệ vẫn có nồng độ cao do đặc tính phân cực của chúng. Chúng tôi đánh giá ảnh hưởng của các cấu hình tạp khác nhau (đồng đều, điều biến và dạng delta) lên sự phân bố khí điện tử và độ linh động điện tử tồn tại trong các giếng lượng tử tạo bởi các cấu trúc dị chất MgZnO/ZnO khác nhau
Optimization in advertisement allocation
No full textTato práce se zabývá optimalizací při rozvrhování reklamy. Hlavním cílem diplomové práce je navrhnout, kam umístit reklamu pro společnost Penny s. r. o. tak, aby maximalizoval celkovou afinitu pomocí kvantitativních metod. Práce je rozdělena na teoretickou a praktickou část. Úvodní teoretická část čtenáře seznámí s některými ukazateli měření dopadu reklamních kampaní a některými základními druhy médií. Dále v této části jsou popsány základní pojmy týkající se lineárního programování, také metody a způsoby zápisu do systému MPL for Windows, který pak bude sloužen k samotnému řešení problému. V praktické části jsou zadány dvě úlohy reklamního plánování, které se řeší pomocí systém MPL for Windows. Nakonec byly výsledky interpretovány a ověřovány.This thesis focuses on the optimization in advertisement allocation. The main aim of the bachelor's thesis is to propose a strategy, how to allocate an advertising for Penny Company s. r. o. that will maximize overall affinity by using quantitative methods. The thesis is divided into theoretical and practical parts. There are some indicators that specify measuring impact of advertising campaign and some basic types of media introduced to readers in the preliminary of theoretical section. Furthermore there are described basic concepts related to the linear programming together with methods and the ways of enrollment into system MPL for Windows which is later delivered itself as a troubleshooting. In the practical section there are two assignments of scheduling advertising which are solved by using MPL for Windows. In the end the results will be interpreted and verified
Optimization in advertisement allocation
No full textThis thesis focuses on the optimization in advertisement allocation. The main aim of the bachelor's thesis is to propose a strategy, how to allocate an advertising for Penny Company s. r. o. that will maximize overall affinity by using quantitative methods. The thesis is divided into theoretical and practical parts. There are some indicators that specify measuring impact of advertising campaign and some basic types of media introduced to readers in the preliminary of theoretical section. Furthermore there are described basic concepts related to the linear programming together with methods and the ways of enrollment into system MPL for Windows which is later delivered itself as a troubleshooting. In the practical section there are two assignments of scheduling advertising which are solved by using MPL for Windows. In the end the results will be interpreted and verified
Etude contrastive des locutions formées avec le mot « cœur » en français, en vietnamien et problèmes de traduction
No full text-Master [120] en langues et lettres françaises et romanes, orientation français langue étrangère, Université catholique de Louvain, 201
Fluorescent Receptors for Biomolecules
No full textThe development of synthetic receptors capable of high-affinity complexation of biologically relevant analytes in competitive solvent systems represents an ongoing challenge in molecular recognition. Anion recognition is particularly problematic, which is significant since numerous biological processes are regulated by anions, such as those resulting from phosphorylation. In this dissertation, we present the design and synthesis of a fluorescent sensor containing two cyclen groups that are preorganized to form a binding cleft for anion complexation. The receptor design includes a rigid acridine backbone, which is also exploited for fluorescence signal transduction. Furthermore, click chemistry is employed to facilitate receptor synthesis, and binding studies with various phosphorylated guest molecules are described.
Additionally, the development of boronic acid-based carbohydrate receptors is presented. Carbohydrates play important roles in a large number of biochemical processes such as signal transduction and cell surface recognition events. The receptors will be used to study carbohydrate binding through Förster resonance energy transfer (FRET) and surface enhanced Raman spectroscopy (SERS).
Another project involves the synthesis of aromatic compounds that can act as auxin herbicides. Auxins are plant hormones that play a major role in the regulation of plant growth and development. A modular synthetic strategy is employed to access a library of small molecules that will be tested for herbicidal activity on a variety of weeds.
Finally, the work on the design and synthesis of molecular building blocks to generate covalently-bonded ordered organic frameworks is discussed
Mechanochemistry-driven phase transformation of crystalline covalent triazine frameworks assisted by alkaline molten salts
No full textCovalent triazine frameworks (CTFs) have shown wide applications in the fields of separation, catalysis, energy storage, and beyond. However, it is a long-term challenging subject to fabricate high-quality CTF materials via facile procedures. Herein, a mechanochemistry-driven procedure was developed to achieve phase transformation of crystalline CTFs assisted by alkaline molten salts. The transformation of CTF-1 from staggered AB to eclipsed AA stacking mode was achieved by short time (30 min) mechanochemical treatment in the presence of molten salts composed of LiOH/KOH, generating high-quality CTF-1 material with high crystallinity, high surface area (625 m2 g−1), and permanent/ordered porosity without carbonization under ambient conditions. This facile procedure could be extended to provide nanoporous three-dimensional CTF materials.This is a manuscript of an article published as Fan, Juntian, Xian Suo, Tao Wang, Zongyu Wang, Chi-Linh Do-Thanh, Shannon M. Mahurin, Takeshi Kobayashi, Zhenzhen Yang, and Sheng Dai. "Mechanochemistry-driven phase transformation of crystalline covalent triazine frameworks assisted by alkaline molten salts." Journal of Materials Chemistry A 10, no. 27 (2022): 14310-14315.
DOI: 10.1039/D2TA02117J.
Copyright 2022 The Royal Society of Chemistry.
Posted with permission.
DOE Contract Number(s): AC02-07CH11358; AC05-00OR22725
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