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New technologies are playing a fundamental role in the postmodern era of globalization where interpersonal interactions at the international level and the exchange of goods, services, information and capital are the basis of all activities. The agriculture sector is constantly facing numerous challenges including the steady growth of the population, climate change, the increasing number of catastrophes, the loss of biodiversity and the spread of parasites. This paper analyzes the impacts of Blockchain applications in agriculture and the food supply chain, through a survey literature review, providing the various players in the agriculture value chain with new tools and key technologies to improve production and distribution processes. To demonstrate the importance of applying the Blockchain in the agriculture sector, especially for emerging countries, the case of South Africa is examined. This focus is one of the unique aspects of this paper, which is the first to deal with this kind of solution applied to the South African context. Our findings indicate that Blockchain, in the e-agricultural context, has the potential for reshaping the entire sector, contributing also to the resolution of the food crisis. This paper discusses the overall implications, limits, challenges and potentials of these applications, from a critical point of view.

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This paper presents a brief literature review of previous studies methodologies, models, and contexts in studying firms' upgrading in Global Value Chains (GVCs). The key context of this paper is set within Fourth Industrial Revolution (4IR). Through the literature review, this paper offers to identify the opportunities of theoretical novelty and ways to elaborate on understanding firm dynamics in Global Value Chains in the context of 4IR. The approach based on Business Model (BM) innovations and new forms of organizing for business (such as platforms) is used to synthesize from previous research findings and build on to newer explanations of firms' entry, learning, and upgrading within GVCs.

Several models of genetic counseling have been proposed to tackle the increasing volume of individuals requiring access to BRCA testing. Few data are available on patient experience and retention of information with nurse-driven genetic counseling. We evaluated the experience and retention of information in women with an uninformative BRCA test result and who were not considered at high risk due to their personal/ family history of cancer who underwent geneticist-supervised nurse-driven genetic counseling and who received their test result by phone. Women who received an uninformative BRCA test result between May 2017 and September 2019 were administered a questionnaire exploring experience with genetic counseling and retention of information provided. Of 366 eligible women, 299 (273 breast cancer patients and 26 women without breast cancer) completed the interview. Overall, 280 women (93.6%) positively valued their experience with genetic counseling and 287 (96.0%) considered it helpful with 57.5% of them feeling reassured for themselves and their family. Information on the clinical implications of the test result was correctly retained and women acted accordingly. Overall, 252 women (87.8%) accurately reported their test result as normal/negative. Only 67 (22.4%) recognized that despite a normal BRCA test result, a low probability of a hereditary syndrome remains. Most women showed a poor ability to estimate cancer risk in BRCA mutation carriers and in the general population. Geneticist-supervised nurse-driven genetic counseling process for women with uninformative BRCA test result is associated with a positive patient experience and an adequate retention of information concerning the management of their personal and familial cancer risk. The design and implementation of nurse-driven genetic counseling models may contribute to efficient and timely access to BRCA genetic testing.