In this Fourth Industrial Revolution (4IR), sustainable development for business firms depends on maintaining sustained performance and environmental sustainability to a great extent. The current study discovers the impact of green supply chain management (GSCM) practices on business performance and the environmental sustainability of a developing country, Bangladesh. Cost and profit are the two important indicators of business performance. On the other hand, environmental sustainability is expressed by waste disposal, resource consumption, and greenhouse gas emission. Primary data were collected through the distribution of web links and direct interaction with the participants of different firms practicing GSCM practices in Bangladesh. A structured questionnaire was used for data collection. Hypotheses were formulated and evaluated accordingly. This study found that the impact of implementation of GSCM practices differs with respect to cost, profit, waste disposal, resource consumption, and greenhouse gas emission. GSCM practices have a statistically significant impact on cost, waste disposal, resource consumption, and greenhouse gas emission. The impact of GSCM practices on profit was statistically insignificant. It was found that lack of IT implementation, high cost of waste disposal, uncertainty and competition in the market, resistance to change, and lack of top management support are the major barriers to implement GSCM practices in Bangladesh.

In the contemporary era of global and sustainable information management, blockchain has made a cutting-edge transformation in online learning. To apprehend this new trajectory, this current systematic review with bibliographic visualization aims to identify the thematic clusters of underlying aspects concerning the sustainable nexus of blockchain and online learning. Using the updated guidelines of the PRISMA flowchart, a total of 434 scholarly research papers from the mainstream research databases, i.e., Web of Science, Scopus, IEEE Xplore, and ScienceDirect, were inspected to be categorized into 15 relevant publications. Bibliographic data were assembled and analyzed accordingly to construct network visualization maps, such as co-authorship, citation, co-citation, bibliographic coupling, and term co-occurrence using VOSviewer 1.6.18. Significant terms were reported and later cross-mapped with those identified by critically reviewing the applicable 15 papers. Standardized scholarship, behavior pattern, and digital badging have been found and derived as themes from the connected clusters. Therefore, current research findings reveal these three broad clutches of themes concerning the sustainable nexus of blockchain and online learning.

Every year patients of various diseases need blood. Among them some need regular transfusion of blood. Hence, safe blood save life but unsafe one takes life. Ensuring regular flow of safe blood is a great challenge for the community in developing countries. Various public and private organizations are working for this purpose. Although the number of blood donor is increasing, there is still a huge gap in demand and supply of blood. A study has conducted to find out problems in getting blood donor in Bangladesh. Data have been collected from 430 respondents in different urban and rural areas of Bangladesh. Moreover, in depth interviews have conducted with hospital authority, blood donating organizations, public and private organizations and volunteers who work for various blood donating organizations. This study finds that patients need blood for delivery case (76%), surgery (55%), kidney diseases (33%), thalassemia (37%) and anemia (41%). About 48% blood seekers report that they require about 19-24 hours for managing each bag of blood. The seekers also report that they collect blood from relatives (77%), blood donating organizations (33%) and blood bank (26%). About 26% donors report that they have to pass more than 6 km for blood donation. They also spend money more than 100 taka (12%) for this purpose. Before and during blood donation, donors face several problems such as transportation problem (38%), coping with emergency case (32%), unskilled staff (29%), health related problem (15%) and lengthy cross checking process (35%). There are a number of people want to donate blood willingly. However, they can't donate due to lack of available communication with blood seekers. Maintaining database of donors, training staffs and using technologies and machines for blood donation process can solve problems in blood donation.