Dalat University Journal of Science / Tạp chí khoa học Đại học Đà Lạt
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GROUP OF SUOI BA ARCHAEOLOGICAL SITES (DAK NONG PROVINCE): DOCUMENTS, PERCEPTION, AND DISCUSSION
Get PDFThis article introduces the results of investigations and surveys from 2006 to 2017 of the group of Suoi Ba archaeological sites in Nhan Co commune, Dak R’Lap district (Dak Nong). The results reveal eight prehistoric archaeological sites in the Suoi Ba area, which are distributed over an area of about 20 hectares, equivalent to the size of an ancient village, and date from 3,500 to 2,000 years BP. In this study, the authors systematize materials, assess historical-cultural values, briefly outline the prehistoric cultural process at Suoi Ba during the late Neolithic and early Metal Age in Dak Nong, and discuss issues related to Suoi Ba relics in a broader context
THE LGBTQA INTERCOLLEGIATE ATHLETES’ EXPERIENCES IN HIGHER EDUCATION INSTITUTIONS IN THE PHILIPPINES: BASIS FOR AN INSTITUTIONAL INCLUSIVE SPORTS PLAN
Get PDFThis study used an explanatory sequential mixed method design to examine discrimination experienced by selected LGBTQA intercollegiate athletes from private and public higher education institutions in the Philippines. The results reveal that participants frequently encountered sexism and verbal harassment at various places and times, that the audience or fans are more likely the perpetrators, and that ignoring the abuse is the most common reaction to harassment. The study proposes an inclusive institutional sports plan to support fair gender treatment that underpins the revisiting or re-examining of institutional policies, strengthens inclusive codes of conduct, provides training on a gender-fair-environment, and recognizes several LGBTQA events and celebrations. The researcher concluded that ignoring inequality does not prevent abuse, but progressively worsen the aggression toward sexual minorities. Additionally, if athletes are freed from discrimination and stress, they will be better able to focus and improve their performance
FACTORS AFFECTING CAN THO RESIDENTS’ INTENTION TO VISIT DALAT IN THE COVID-19 ERA
Get PDFThe paper examines the factors affecting the intentions of Can Tho residents to travel to Dalat as the COVID-19 pandemic is gradually brought under control. The data were collected from a survey of 213 Can Tho residents and analyzed with Cronbach’s alpha, exploratory factor analysis, confirmatory factor analysis, and structural equation modeling. The results show that the intentions of Can Tho residents to travel to Dalat depend on four factors: (1) attitude toward Dalat tourism, (2) subjective norms, (3) perceived behavioral controls, and (4) perceived health risk. In particular, the attitudinal factor significantly influences Dalat travel intentions. Based on the research results, the article proposes four recommendations for managers, corresponding to the four influencing factors, to increase the intentions of Can Tho residents to travel to Dalat in the COVID-19 era
A COMPARISON OF THE LIFE CYCLE RITUALS OF THE MNONG ETHNIC GROUP IN DAM RONG DISTRICT (LAM DONG PROVINCE) AND DAK SONG DISTRICT (DAK NONG PROVINCE)
Get PDFThe Mnong are an ethnic minority of the Central Highlands concentrated in Dak Nong, Dak Lak, and Lam Dong provinces. In their long residence in these regions and with continuous creativity, the Mnong have created cultural characteristics shown in their customs, beliefs, and festivals. Life cycle rituals are one of them. From a comparative perspective, this article delves into the spiritual beliefs in two areas where many Mnong live, Dam Rong District (Lam Dong) and Dak Song District (Dak Nong), to find similarities and differences in the beliefs and expressions of their life cycle rituals. On that basis, some solutions are proposed to help preserve their ethnic identities through the life cycle rituals with the purpose of preserving the cultural diversity of the Mnong residents in the Central Highlands.The Mnong are an ethnic minority of the Central Highlands concentrated in Dak Nong, Dak Lak, and Lam Dong provinces. In their long residence in these regions and with continuous creativity, the Mnong have created cultural characteristics shown in their customs, beliefs, and festivals. Life cycle rituals are one of them. From a comparative perspective, this article delves into the spiritual beliefs in two areas where many Mnong live, Dam Rong District (Lam Dong) and Dak Song District (Dak Nong), to find similarities and differences in the beliefs and expressions of their life cycle rituals. On that basis, some solutions are proposed to help preserve their ethnic identities through the life cycle rituals with the purpose of preserving the cultural diversity of the Mnong residents in the Central Highlands
SINO-VIETNAMESE PEOPLE’S ECONOMIC ACTIVITIES IN DISTRICTS 5, 6, AND 11 OF HO CHI MINH CITY, VIETNAM (1996-2016)
Get PDFThis article clarifies the involvement of the Sino-Vietnamese people in Ho Chi Minh City’s economy from 1996 to 2016. Vietnam has accelerated the process of industrialization and modernization since 1996, and Ho Chi Minh City now has a thriving local economy. As with other ethnic groups, the Sino-Vietnamese people have made a considerable contribution to boosting the local economy. Based on the theory of functionalism, culture-economy relationships, and primary anthropological research methods, this article assesses the economic contributions of the Sino-Vietnamese in industry and handicrafts, commerce and services, and finance and credit. However, there are many obstacles for the Sino-Vietnamese economy. The quality of goods is insufficient to meet consumer satisfaction. The harshly competitive market confronts their businesses with numerous challenges. The abandonment of traditional professions by the young Sino-Vietnamese generation poses a threat to traditional businesses, and COVID-19 is a pressing issue for their economy. This article proposes realistic solutions to encourage the Sino-Vietnamese people to overcome disadvantages and contribute to the economy of Ho Chi Minh City in the future
THREATS TO GOLDEN-FLOWERED CAMELLIAS ALONG HON GIAO PASS
Get PDFThe identification, documentation, and discussion of the main threats affecting the golden-flowered Camellia species endemic to Hon Giao Pass are discussed. Observations, published literature, and collations of data accumulated from field trips throughout Vietnam since 1999 are analyzed and researched for the preparation of the article. The major anthropogenic risk factors affecting the golden-flowered Camellia species and their habitats on the Dalat Plateau and along the Hon Giao Pass are named and reviewed. These risk factors include habitat loss due to population growth, logging, habitat fragmentation and degradation, poaching, collection of wild plant species, fire, and the construction of dams and their associated water impoundments
STUDY OF NEGATIVE REFRACTIVE INDEX IN Rb FOUR-LEVEL N-TYPE ATOMIC GAS MEDIUM
Get PDFIn this work, we study the generation of a negative refractive index based on electromagnetically induced transparency (EIT) in a Rb four-level N-type atomic gas medium. We derive analytic expressions for the relative permittivity and relative permeability of the medium according to the parameters of the probe, pump, and signal laser fields. We then investigate the variation of the real parts of the relative permittivity and relative permeability with respect to the intensity and frequency of the pump and signal laser fields. In the presence of the pump laser beam, the medium becomes transparent to the probe laser beam even in the resonant region. At the same time, the real parts of the relative permittivity and relative permeability are simultaneously negative (i.e., the medium exhibits a negative refractive index) in the EIT spectral domain. In the presence of the signal laser beam, the EIT effect occurs over two different frequency domains of the probe beam, so a negative refractive index is also generated in these two frequency domains. The investigation of the real parts of the relative permittivity and relative permeability with intensity and frequency of the pump and signal laser fields allowed us to find the laser parameters for the appearance of the negative refractive index, which can be useful for experimental observations
THE CUISINE OF THE EDE PEOPLE IN KMRONG PRŎNG VILLAGE, BUON MA THUOT (DAK LAK PROVINCE)
Get PDFThe Ede are a Malayo-Polynesian language-speaking ethnic group residing primarily in Dak Lak, Dak Nong, Phu Yen, and Khanh Hoa provinces. They have a rich and unique tangible and intangible culture. From 2017 to 2020, the authors carried out many field trips to Kmrong Prŏng A and Kmrong Prŏng B villages (Ea Tu Commune, Buon Ma Thuot) to research, collect, and inventory the material and spiritual cultural heritage of the Ede for conservation and exhibition at the Dak Lak provincial museum. In this article, we introduce some traditional dishes of the Ede in Krmong Prŏng village, research and evaluate traditional aspects of their cuisine, and propose some recommendations and solutions to preserve and promote the unique Ede cuisine in the current period of development and integration
ENGINEERING THE NaYF4:Yb3+/Tm3+ UPCONVERSION NANOPARTICLE LUMINESCENCE ENERGY TRANSFER FOR A RATIOMETRIC pH INDICATOR
Get PDFFluorescent dye 8-hydroxypyrene-1,3,6-trisulfonic acid (HPTS) is used to develop a ratiometric pH indicator based on NaYF4:Yb3+/Tm3+ upconversion nanoparticles (UCNPs). HPTS was functionalized onto the UCNP surfaces via a modified co-condensation silica coating (UCNP@SiO2-HPTS). The as-prepared UCNP@SiO2-HPTS core-shell nanostructure was characterized with transmission electron microscopy, scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy (FT-IR), and photoluminescence spectroscopy. Luminescence resonance energy transfer (LRET) from NaYF4:Yb3+/Tm3+ UCNP to HPTS was found to exhibit pH-sensitivity simultaneously under near-infrared (NIR) irradiation (λ = 980 nm)
ONLINE TEACHING PREPAREDNESS AND STRESS PROFILE: A COMPARATIVE STUDY OF SECONDARY AND HIGHER EDUCATION FACULTY EXPERIENCES IN THE PHILIPPINES
Get PDFThe shift of education to online learning requires every educator to adjust; but the adjustment causes teachers to feel stress and requires preparation. This study purposively explores and compares the online teaching preparedness and stress profile of 100 secondary and 200 higher education faculty. The study uses a sequential explanatory research design consisting of a survey followed by interviews. The results reveal that higher education faculty are better prepared to teach online than secondary education faculty. The lack of emergency response to power service interruption and low internet connectivity are the major problems faced by the participants. Secondary and higher education faculty have the same level of stress from online teaching. It was concluded that educators at both private public and private institutions can aid teachers in combating the challenges of teaching online, online teaching devices, relevant educational technology tools, and faculty training and workshop on stress management. Investigating teacher development positively affects the learning achievement of the students