PHILOSOPHICAL PERSPECTIVE OF MARXISM-LENINISM ON THE RELATIONSHIP BETWEEN BEHAVIORAL CULTURE AND THE NATURAL ENVIRONMENT

Behavioral culture is an integral component of culture, comprising a system of values including knowledge, emotions, beliefs, attitudes, and behaviors of individuals towards the natural environment, social environment, and human interactions accumulated through practical activities. In this article, we clarify the concept of behavioral culture, cultural behavior towards the natural environment, and delve into the study of the relationship between behavioral culture and the natural environment based on the viewpoints of Marxism-Leninism concerning behavioral culture towards the natural environment.  Article visualizations

On the regularization of solution of an inverse ultraparabolic equation associated with perturbed final data

In this paper, we study the inverse problem for a class of abstract ultraparabolic equations which is well-known to be ill-posed. We employ some elementary results of semi-group theory to present the formula of solution, then show the instability cause. Since the solution exhibits unstable dependence on the given data functions, we propose a new regularization method to stabilize the solution. then obtain the error estimate. A numerical example shows that the method is efficient and feasible. This work slightly extends to the earlier results in Zouyed et al. \cite{key-9} (2014).Comment: 19 pages, 4 figures, 1 tabl

Harnessing graph state resources for robust quantum magnetometry under noise

Precise measurement of magnetic fields is essential for various applications, such as fundamental physics, space exploration, and biophysics. Although recent progress in quantum engineering has assisted in creating advanced quantum magnetometers, there are still ongoing challenges in improving their efficiency and noise resistance. This study focuses on using symmetric graph state resources for quantum magnetometry to enhance measurement precision by analyzing the estimation theory under Markovian and non-Markovian noise models. The results show a significant improvement in estimating both single and multiple Larmor frequencies. In single Larmor frequency estimation, the quantum Fisher information spans a spectrum from the standard quantum limit to the Heisenberg limit within a periodic range of the Larmor frequency, and in the case of multiple Larmor frequencies, it can exceed the standard quantum limit for both Markovian and non-Markovian noise. This study highlights the potential of graph state-based methods for improving magnetic field measurements under noisy environments.Comment: 10 pages, 7 figure

Optimization of sulfuric acid leaching of a Vietnamese rare earth concentrat

The modeling of Yen Phu (Vietnam) xenotime concentrate leaching by sulfuric acid was studied for the purpose of optimizing the process. The response surface methodology (RSM) based on a central composite face-centered (CCF) design was empirically used to model the interactive effect of the independent variables, namely leaching temperatures of 250–450 °C, acid/concentrate (acid/conc.) mass ratios of 0.8–1.8, and leaching times of 2–6 h, on the dependent response, namely the leaching yield. And a CCF model for the leaching of the concentrate was proposed that exhibited good consistency with the experimental data. The shrinking core models for spherical particles of constant size based on the Arrhenius equation were empirically used to study the kinetics of the leaching. The activation energies calculated from the kinetic models for the chemical reaction and diffusion rate stages have the same value of 17.3 kJ·mol−1 , which fitted well to a mixed control model of the chemical reaction followed by a diffusion stage at leaching temperatures in the range of 473–593 K. The kinetic studies of the leaching indicated that the leaching percent rate (or leaching yield) is controlled by the leaching temperature. The optimization of the leaching process was estimated by analyzing the contributions of the coefficients of the CCF model to the leaching yield. The results indicated that the effect of leaching temperature on leaching yield is the strongest; it is five times higher than that of the acid/conc. Mass ratio and four times higher than that of the leaching time. The effects of acid/concentration mass ratio and leaching time on leaching yield are insignificant. In addition, the optimum data for leaching are as follows: the leaching temperature, acid/conc. Mass ratio, and leaching time are 320 °C, 1.3, and 4 h, respectively. The proposed CCF model and kinetic study suggested that the optimization of the Yen Phu xenotime concentrate leaching is controlled by the leaching temperature; and the CCF model can potentially be applied in the commercial operation of Yen Phu xenotime concentrate leaching after pilot tests on 50 kg dry concentrate per batc

CAMELLIA HOAANA (THEACEAE, SECTION CORALLINA), A NEW SPECIES FROM BU GIA MAP NATIONAL PARK IN SOUTHERN VIETNAM

Camellia hoaana, a new species of the Camellia sect. Corallina (Theaceae) from Bu Gia Map National Park, Vietnam, is described and illustrated. Morphological features of this species are young branches pubescent and glabrescent. Leaves elliptic to obovate-elliptic; apex bluntly cuspidate, base wide cuneate; above dark green, shiny and glabrous; below paler green and sparsely pubescent along midrib; petiole sparsely pubescent. Flowers solitary or geminate, axillary or terminal; pedicel pubescent. Bracteole 1 (or none),pubescent on both sides, persistent. Sepals 4–5(–6), pubescent on both sides, persistent. Petals 5–6, white, outermost 1–2 pubescent at the apex on both sides, the rest glabrous on both sides. Androecium numerous, 2–3 whorls, glabrous. Ovary 3-locular, white silky tomentose; styles 3, free to the base, glabrous. Capsule subglobose, sparsely pubescent, furfuraceous. Seeds 1–2 per locule, semiglobose or globose, densely brown villous. This new species is assessed as Data Deficient (DD) according to the IUCN categories and criteria

GROUP OF SUOI BA ARCHAEOLOGICAL SITES (DAK NONG PROVINCE): DOCUMENTS, PERCEPTION, AND DISCUSSION

This 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

TÁC ĐỘNG CỦA GIÁO DỤC KHỞI NGHIỆP ĐẾN Ý ĐỊNH KHỞI NGHIỆP CỦA SINH VIÊN: TRƯỜNG HỢP NGHIÊN CỨU TẠI TRƯỜNG ĐẠI HỌC KINH TẾ, ĐẠI HỌC HUẾ

This research was conducted to investigate the impact of entrepreneurial education on the entrepreneurial intentions of university students. The research methodology incorporates Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), and Structural Equation Modeling (SEM). The survey results from 355 students at University of Economics, Hue University revealed that entrepreneurial education, which encompasses teaching methods, faculty support, and extracurricular programs, had a positive influence on students' entrepreneurial intentions and their entrepreneurial attitudes. Entrepreneurial attitudes also positively influenced entrepreneurial intentions. Based on these findings, several implications are proposed to enhance entrepreneurial education, including (i) Close integration into the local entrepreneurial ecosystem; (ii) Consideration of making entrepreneurial education programs mandatory; (iii) Teaching through case studies and fostering debates on business ideas or projects; (iv) Enhancing faculty support by incorporating business storytelling and encouraging students to engage in real business activities; (v) Ensuring that extracurricular activities are substantial and deeply connected to the business community; and (vi) Assisting students in better understanding themselves and developing an appropriate attitude towards a culture of embracing failure.Nghiên cứu được thực hiện nhằm tìm hiểu sự tác động của giáo dục khởi nghiệp đến ý định khởi nghiệp của sinh viên. Phương pháp tiến hành nghiên cứu gồm phân tích nhân tố khám phá, phân tích nhân tố khẳng định và mô hình cấu trúc tuyến tính. Kết quả khảo sát 355 sinh viên trường Đại học Kinh tế, Đại học Huế cho thấy: Giáo dục khởi nghiệp (gồm phương pháp dạy học, hỗ trợ của giảng viên và chương trình ngoại khoá) tác động cùng chiều đến ý định và thái độ khởi nghiệp của sinh viên. Thái độ khởi nghiệp tác động cùng chiều đến ý định khởi nghiệp. Dựa vào kết quả nghiên cứu, các hàm ý quản trị được đề xuất nhằm phát triển giáo dục khởi nghiệp: (i) Kết nối chặt chẽ vào hệ sinh thái khởi nghiệp địa phương; (ii) Cân nhắc đưa chương trình đào tạo giáo dục khởi nghiệp thành học phần bắt buộc; (iii) Dạy học theo hướng case study và tăng cường tranh luận về ý tưởng hoặc dự án kinh doanh; (iv) Giảng viên tăng cường hỗ trợ sinh viên thông qua câu chuyện kinh doanh và khuyến khích họ làm quen với hoạt động kinh doanh; (v) Hoạt động ngoại khóa phải thực chất và kết nối sâu với cộng đồng doanh nhân; và (vi) Giáo dục để sinh viên thấu hiểu bản thân và có thái độ phù hợp với văn hoá thất bại

Study on structure of the Earth’s crust in Thua Thien-Hue province and adjacent areas by using gravity and magnetic data in combination

This paper presents the structural characteristics of the Earth’s crust in Thua Thien-Hue province and adjacent area based on interpretation of gravity and magnetic data in combination. Research results have shown that: The depth of crystalline basement varies complicatedly, in the range of 0–11 km. The depth of Conrad surface increases from Northeast (12 km) to Southwest (18 km) and the depth of Moho surface is 23–34 km; The density of sedimentary layer changes from 2.61 g/cm3 to 2.65 g/cm3. Meanwhile, the density of granitic layer is in the range of 2.68–2.73 g/cm3. The basaltic layer has the density value of 2.88–2.93 g/cm3 and the average density of lower layer of the Earth’s crust is about 3.30 g/cm3; The depth of second-order faults, Red River and A Luoi - Rao Quan, is through the Earth’s crust. Meanwhile, the depth of influence of third-order faults, Chay river, Dong Ha - Phu Vang, Vinh Linh, Hue - Son Tra and Tam Ky - Phuoc Son, is within the thickness of the Earth’s crust

Nutritional status and dietary intake before hospital admission of pulmonary tuberculosis patients

Conducting research on nutritional status and dietary intake of pulmonary tuberculosis patients is essential for developing interventions in clinical nutrition practice and treatment during hospitalization, which can improve the quality of patients life. This cross-sectional descriptive study aimed to determine nutritional status and some related factors (such as geography, occupation, educational level, economic classification, etc.) of 221 patients with pulmonary tuberculosis who were examined and treated at the Respiratory Tuberculosis Department, National Lung Hospital in July 2019–May 2020. The results showed that the risk of undernutrition: According to BMI (Body Mass Index): 45.8% of patients were malnourished, 44.2% normal and 10.0% overweight/obese. According to MUAC (Mid-Upper Arm Circumference): 60.2% of patients were malnourished, 39.8% of patients were normal. According to SGA (Subjective Global Assessment): 57.9% of patients were at risk of undernutrition, of which 40.7% were at moderate risk of undernutrition and 17.2% risk of severe undernutrition. Classification of nutritional status according to serum albumin index: 50% of patients were malnourished, the rate of undernutrition of mild, moderate and severe levels was 28.9%, 17.9% and 3.2%, respectively. Most patients eat with others and eat less than four meals a day. The average dietary energy of patients with pulmonary tuberculosis in was 1242.6 ± 46.5 Kcal and 1084 ± 57.9 Kcal, respectively. 85.52% of patients did not eat enough food, 4.07% had enough, 10.41% consumed excess energy. The ratio of energy-generating substances in the diet (Carbohydrate:Protein:Lipid) was on average 54:18:28 for males and 55:16:32 for females. Most of the study population had diets that did not meet the experimental study in terms of micronutrient content. Specifically, more than 90% do not meet the requirements for magnesium, calcium, zinc, and vitamin D. The water-soluble and fat-soluble vitamins respond poorly, only about 30–40%. Selenium is the mineral with the best response rate, above 70%. Our findings revealed that the majority of the study subjects had poor nutritional status, as evidenced by diets lacking in essential micronutrients