The Importance of Information, System and Service Quality of E-commerce Website on Customer Satisfaction and Loyalty in Bangladesh

Online business is gaining momentum day by day in the world and in Bangladesh in general, the number of e-commerce businesses is constantly increasing which is the result of how the technology and how it is being done is getting better. Guided by the purpose of this study “Examining the importance of information quality, system quality and service quality of electronic commerce websites to the customer satisfaction and loyalty in Bangladesh”, research has conducted based on knowing the relationship between website quality and customer satisfaction and loyalty. With the help of 450 participants, this study found that young people participated in online shopping more than other categories of residents in Dhaka, the Capital city of Bangladesh where the survey was conducted. Another finding of this study is that both under-graduates and post-graduates are highly involved. Most online shoppers have shown that they do it at least once a month, with 37.8 percent doing it. To find out the relationship between (information quality, system quality, and service quality) and customer satisfaction and loyalty, SPSS (16.0) was used and the study found that all factors of website quality have a strong and direct relationship to satisfaction and loyalty of customers and results also find that satisfaction is closely related to loyalty. Current research has advised online business owners to pay close attention to all factors of website quality as they are more important factors in satisfying customers, attracting new customers and expanding or promoting e-commerce in general. Keywords: Information Quality, System Quality, Service Quality, Customer Satisfaction, Customer loyalty. DOI: 10.7176/EJBM/12-14-11 Publication date:May 31st 202

Adversarial Training for Physics-Informed Neural Networks

Physics-informed neural networks have shown great promise in solving partial differential equations. However, due to insufficient robustness, vanilla PINNs often face challenges when solving complex PDEs, especially those involving multi-scale behaviors or solutions with sharp or oscillatory characteristics. To address these issues, based on the projected gradient descent adversarial attack, we proposed an adversarial training strategy for PINNs termed by AT-PINNs. AT-PINNs enhance the robustness of PINNs by fine-tuning the model with adversarial samples, which can accurately identify model failure locations and drive the model to focus on those regions during training. AT-PINNs can also perform inference with temporal causality by selecting the initial collocation points around temporal initial values. We implement AT-PINNs to the elliptic equation with multi-scale coefficients, Poisson equation with multi-peak solutions, Burgers equation with sharp solutions and the Allen-Cahn equation. The results demonstrate that AT-PINNs can effectively locate and reduce failure regions. Moreover, AT-PINNs are suitable for solving complex PDEs, since locating failure regions through adversarial attacks is independent of the size of failure regions or the complexity of the distribution

NRF2 Plays a Critical Role in Both Self and EGCG Protection against Diabetic Testicular Damage

Activation of nuclear factor erythroid 2-related factor 2 (NRF2) has been found to ameliorate diabetic testicular damage (DTD) in rodents. However, it was unclear whether NRF2 is required for these approaches in DTD. Epigallocatechin gallate (EGCG) is a potent activator of NRF2 and has shown beneficial effects on multiple diabetic complications. However, the effect of EGCG has not been studied in DTD. The present study aims to explore the role of NRF2 in both self and EGCG protection against DTD. Therefore, streptozotocin-induced diabetic C57BL/6 wild type (WT) and Nrf2 knockout (KO) mice were treated in the presence or absence of EGCG, for 24 weeks. The Nrf2 KO mice exhibited more significant diabetes-induced loss in testicular weight and spermatozoa count, and increase in testicular apoptotic cell death, as compared with the WT mice. EGCG activated NRF2 expression and function, preserved testicular weight and spermatozoa count, and attenuated testicular apoptotic cell death, endoplasmic reticulum stress, inflammation, and oxidative damage in the WT diabetic mice, but not the Nrf2 KO diabetic mice. The present study demonstrated for the first time that NRF2 plays a critical role in both self and EGCG protection against DTD

Synthesis and biological evaluation of pentacyclic triterpenoid derivatives as potential novel antibacterial agents

A series of ursolic acid (UA), oleanolic acid (OA) and 18β-glycyrrhetinic acid (GA) derivatives were synthesized by introducing a range of substituted aromatic side-chains at the C-2 position after the hydroxyl group at C-3 position was oxidized. Their antibacterial activities were evaluated in vitro against a panel of four Staphylococcus strains. The results revealed that the introduction of aromatic side-chains at the C-2 position of GA led to the discovery of potent triterpenoid derivatives for inhibition of both drug sensitive and resistant S. aureus, while the other two series derivatives of UA and OA showed no significant antibacterial activity even at high concentrations. In particular, GA derivative showed good potency against all four strains of Staphylococcus (MIC = 1.25 - 5 μmol/L) with acceptable pharmacokinetics properties and low cytotoxicity in vitro. Molecular docking was also performed using S. aureus DNA gyrase structure to rationalize the observed antibacterial activity. Therefore, this series of GA derivatives have strong potential for the development of a new type of triterpenoid antibacterial agent

Research on digital sharing mechanism of agricultural science and technology resources considering collaborative innovation capability

The digital sharing of agricultural scientific and technological resources is the key to promoting agricultural scientific and technological innovation. Explore the strategic mechanism for the digital sharing of agricultural scientific and technological resources, reveal the law of their behavioral evolution, and provide theoretical guidance for the practice of digital sharing of agricultural science and technology resources. Introducing the perspective theory of perceived utility to replace expected utility, constructing a stochastic evolutionary game model for the sharing parties and demand parties of agricultural science and technology resources, analyzing the dynamic evolution rules of both sides of resource sharing, and analyzing the key factors affecting the stability of agricultural science and technology resource sharing through numerical simulation

Child-Protecting/Nurturing-Oriented Cultural/Religious Practices in East Asia: Reports and Observations from China and Japan

Child-Protecting/Nurturing-Oriented Cultural/Religious Practices in East Asia: Reports and Observations from China and Japan (Panel abstract if needed) Abstract: Protecting and nurturing children requires all human efforts; in addition to physical means, such as food, drink and medical care, more often than not, cultural and religious measures are taken in various forms and occasions in East Asian countries like China and Japan. These measures feature the efforts of human beings to negotiate with Mother Nature for harmonious co-existence, for peaceful solutions of a conflict perceived by the people in question, and for blessings and protections. This panel will explore the various ways discovered in four individual presentations. Mori-Kolbe and Zhang present a comparative study of baby-naming traditions in China and Japan, both of which bear strong cultural messages of parents’ or grandparents’ wishes and hopes for their young, Li investigates a prevalent guidepost belief in southwest China that is featured with trading for good fortune for a child with a merit-doing ritual, Jiang reports a goddess belief in Confucius’ hometown that is meant to raise children and prevent diseases, and Zhang analyzes a re-naming practice for disease-driven children in northwest China that involves a combined religious practices of Daoism, Buddhism, Confucianism as well as shamanism. While Mori-Kolbe and Zhang’s study is based on literature data, all the other three studies are based on field research data obtained in three different locations in China – East, northwest and southwest, respectively. Key words: Child-protecting/nurturing; cultural/religious practices; East Asia; China; Japan A comparative observation of baby naming practices in Japan and China in the past century Zuotang Zhang; Noriko Mori-Kolbe Abstract: By using a literature-based – names found in non-academic publications as well as in scholastic journals and book – research on newborn baby naming practices in Japan and China from 1912 to 2018, the authors present a comparative study between the two baby naming practices. The research finds that in over 75% cases a newborn baby’s name is carefully chosen by the parents or grandparents or other people like guardians with very obvious good hopes and wishes to the baby. Names for baby boys usually bear the parents’ blessings for health, fortune, braveness, cleverness, good personality, and good virtue. Names for baby girls usually reflect the parents’ hope for good looking, gracefulness, tenderness and cleverness. Therefore a baby’s name is the parents’ good-wish message, which is an articulated hope for the good that starts from a baby, a single family and then, as the baby grows up and extends his or her social activity radius, to a community and beyond. The presentation has four parts. The first part will present concrete examples of most frequently seen/used baby names in the two countries; the second part presents a comparative observation of similarities and differences of the naming patterns in the two countries. The third part presents a brief analysis on the socio-linguistic and socio-cultural backdrops of the practices. The conclusion part gives an overview of the developmental trends found in the two adjacent nations. Key words: Japanese naming practice; Chinese naming practice; comparison; past century Merit and nurture: An Anthropological Investigation of the Guidepost Belief in the Forty-eight Villages in the Border Area of Guizhou and Hunan Province Shengzhu Li Abstract: This paper finds that the custom of making guidepost is prevalent in the minority areas of Southwestern China through the field investigation of the “Forty Eight Villages” of Miao and Dong People in the border areas of Hunan and Guizhou Provinces. The guidepost is a kind of stone monument that set up at the fork to point the direction for passers-by. Making guidepost is a kind of belief behavior carried out by local people to treat children\u27s actual illnesses and resolve imaginary disasters. Specifically, if a child has a strange illness, crying, or not good at learning, it is necessary to ask the fortune teller to give a look at the date of birth and the eight characters of a horoscope. If the diagnosis of the general arrow is diagnosed, you need to set up a guidepost to resolve the disaster. Therefore, the guidepost is called Life Preserving Monument by the locals. In essence, Making guidepost is a kind of belief ritual of “doing merit”, that is，accumulating “goodness” by the good deeds of facilitating others, thereby obtaining the blessing of the gods and resolving the disease. The making guidepost, together with setting up bridges and stools, road repairs, e.g. have formed the local belief landscape of Merit. Therefore, the local guidepost worship can be regarded as the concrete practice of Chinese traditional concept of merit in minority rural society. Key words: Guidepost; Miao and Dong minority nationalities; children’s illnesses; folk belief Naming practice in Japan Noriko Mori-Kolbe Abstract: The present study is a literature based research on newborn baby naming practice in Japan. Based on existing literature on naming, survey on given names, and concrete examples, an overview of a naming pattern of Japan will be presented. Historical observations of popular baby names include trends of popular female and male names and recent trends of popular baby names. Comparisons with naming practices of other countries/cultures will follow. Key words: newborn baby naming; Japan; gender difference in naming; new trends The goddess belief in Confucius\u27s hometown—Taking the custom of childcare in Qufu as an example Shuai Jiang Abstract: In Qufu, there has been a folk custom of raising children and preventing diseases, which the locals call it “Sa Momo” （撒馍馍，namely throwing Steamed buns）. Qufu is the birthplace of Confucius and the birthplace of Confucian culture. More than 30 years ago, children were required to Zhong Huahua (种花花，having smallpox vaccination), which usually took place in February in the lunar calendar. After the cowpox break out, it would leave a pimple scar on the arm of the child. In the fourth month of the lunar year, his relatives would bring gifts to visit the vaccinated child, this ritual is named dropping the pimple scar （掉疙疤）. On the 6th day of the sixth month of the lunar year, people should send the Pox Goddess away（送痘疹娘娘）. “Sending the Pox Goddess” means to thank the goddess for her protecting children\u27s health. This custom reflects the different attitudes of the concept of parenting in the Qufu area and the concept of child-rearing in Confucian culture. Therefore, we can try to explore the characteristics of the people\u27s belief landscape in the core area of Confucian culture. Through the study of folk beliefs in Qufu area from the Anthropological perspective, we can deepen the understanding of the Chinese people’s spiritual world under the profound implications of Confucian culture. Key words: folk custom; child-care measures; dropping-the-pimple-scar ritual; Pox Goddes

General Strategy toward Laser Single-Step Generation of Multiscale Anti-Reflection Structures by Marangoni Effect

The anti-reflection of transparent material surfaces has attracted great attention due to its potential applications. In this paper, a single-step controllable method based on an infrared femtosecond laser is proposed for self-generation multiscale anti-reflection structures on glass. The multiscale composite structure with ridge structures and laser-induced nano-textures is generated by the Marangoni effect. By optimizing the laser parameters, multiscale structure with broadband anti-reflection enhancement is achieved. Meanwhile, the sample exhibits good anti-glare performance under strong light. The results show that the average reflectance of the laser-textured glass in the 300–800 nm band is reduced by 45.5% compared with the unprocessed glass. This work provides a simple and general strategy for fabricating anti-reflection structures and expands the potential applications of laser-textured glass in various optical components, display devices, and anti-glare glasses

18β-Glycyrrhetinic acid derivative-based metallo-hydrogels with highly selective and sensitive for histidine detection

Quantitative detection of His has aroused great interest in disease diagnosis since abnormal histidine (His) metabolism would cause a variety of serious diseases. However, exploiting a strategy with facile, highly selective, sensitive sensing and low-cost to monitor His remains a challenge. In this study, a series of novel metallo-hydrogels were successfully constructed, which were composed of 18β-glycyrrhetinic acid (GA) derivative (GA-O-09) with rare earth metal ions (Ce3+, Tb3+, Eu3+ and La3+). In addition, these metallo-hydrogels possessed excellent thermodynamics stability with the gel melting temperature (Tgel) ranging from 62.4 ± 0.49 °C to 67.4 ± 0.49 °C and remarkable pH stability over a range of pH values of 3–10. Interestingly, the Histidine (His)-loaded GA-O-09/Eu3+ hydrogel and the His-loaded GA-O-09/La3+ hydrogel displayed extraordinary fluorescence enhancement, in which the lowest fluorescence response concentrations (LODs) of the His-loaded GA-O-09/Eu3+ hydrogel and the His-loaded GA-O-09/La3+ hydrogel were 1.14 × 10-8 and 1.07 × 10-8 M, respectively. Therefore, the result showed that the study of the GA-O-09/Eu3+ and GA-O-09/La3+ hydrogels could provide a potential application for highly selective and sensitive detection for His