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Results – From a hardening test, we then tested with an impact tester charpy Treviolo H060. The results showed that the impact strength is escalated up to 29.09% post-hardening circle, which was observed using electrical microscope. The value of steel strength increased 2.12 J/mm² compared with earlier hardening process, which is, 1.57 J/mm². The results showed that the fracture in the welding process without the hardening process is a brittle fracture that is shown by the flat crystal structure; on the other hand, the hardening process before welding shows a form of coarse-looking structure indicating that the specimen has an impact towards which the toughness is higher.

Research Limitations/Implications – The effect influence of the hardening process to the impact strength of welded joints before and after the hardening process SMAW AISI 1050 steel hardening process. The mechanical properties test is done with the equipment impact charpy.

Practical Implications – The field we often encounter is erosion or wear out occurring in the construction, for example, many equipments such as agricultural equipment, bridges, ship construction, motor shaft, machining such as hand tools, small rings, and agricultural tools.

Originality/Value – This is the first reported research on impact strength using the hardening test.

Understanding when entrants might have an advantage over an industry’s incumbent firms in developing and adopting new technologies is a question which several scholars have explained in terms of technological capabilities or organizational dynamics. This paper proposes that the value network—the context within which a firm competes and solves customers’ problems—is an important factor affecting whether incumbent or entrant firms will most successfully innovate. In a study of technology development in the disk drive industry, the authors found that incumbents led the industry in developing and adopting new technologies of every sort identified by earlier scholars—at component and architectural levels; competency-enhancing and competency-destroying; incremental and radical—as long as the technology addressed customers’ needs within the value network in which the incumbents competed. Entrants led in developing and adopting technologies which addressed user needs in different, emerging value networks. It is in these innovations, which disrupted established trajectories of technological progress in established markets, that attackers proved to have an advantage. The rate of improvement in product performance which technologists provide may exceed the rate of improvement demanded in established markets. This mismatch between trajectories enables firms entering emerging value networks subsequently to attack the industry’s established markets as well.

At its best, participation observation (PO) includes the researcher living inside a formal or informal organization long enough to actually observe first-hand how the organization makes sense of its environment, frames problems and opportunities, plans and performs actions, evaluates outcomes, rewards and punishes its members, and celebrates and commiserates sacred, climatic, and/or exceptional events. The core feature of PO is being there — the researcher's presence in the same context as participants as events happen and not relying mostly on participants retrospections about what happened and the causes and consequences of what happened. In some studies PO data collection occurs unobtrusively — the researcher does not inform the organizations’ participants that she is conducting a study of their thinking and behavior — for example, in The Tearoom Trade (Humphreys, 1970) the researcher becomes a “watch queen” (lookout watching for police) in a men's room in park while others engage in homosexual acts; in The Informant (Eichenwald, 2000) an executive in an international manufacturing firm becomes an undercover researcher (with hidden cameras and listening devices) to collect data showing his colleagues planning and doing illegal price-fixing deals with executives in other firms. In most studies PO data collection is obtrusive with the organizations’ members knowing that a researcher is present for the purposes of observing, describing, and explaining what is occurring in the organization — for example, in Coming of Age in Samoa (Mead, 1943) the American researcher lived among the natives in the south Pacific island to describe rituals relating to the transformation of child to adult; in The Used Car Game (Browne, 1976) the researcher directly observed interactions of salesmen, customers, and sales managers for seven-to-ten hours a day for 15 months with all participants knowing that the researcher was “being there” to collect data to describe and understand their thinking and behavior. The intent for this chapter is not to present a full review of the PO literature; the focus here is to illustrate an obtrusive PO study in a formal organizational context in-depth. The main goals include (1) illustrating doing PO and (2) describing the value of PO research. This chapter serves to introduce the reader to relevant organizational PO literature and provides details of applying participant observation to the study of organizational behavior. The study applies an ethnographic approach to develop flow diagrams of the information processes and decision-making stages of corporate and plant executives in developing corporate purchasing agreements with suppliers. Participant observations of the processes to develop corporate purchasing agreements were conducted along with extensive personal interviews of plant buyers at seven plant locations of Epsilon Corporation — a multinational electronics firm with headquarter offices in New York City. The results indicate that valid and useful descriptions are possible of the information processes and decisions actually used to produce corporate purchasing agreements. Several diagnostic comments are provided to each of the four phases in the processes used to develop corporate purchasing agreements. A template for applying participant observation methods in case study research concludes the chapter.

The aim of this paper is to analyse the recent changes in the role played by Africa as a traditional natural resources supplier for the world economy in a multipolar context. We highlight, on the one hand, how Africa remains a prominent supplier of critical minerals needed for information and communication technologies (ICT), including platinum, vanadium, coltan, chromium, manganese, zirconium, etc., and how the boomerang effect results in Africa also importing electronic waste. On the other hand, we show how the BRICS’ growth model, based on a very intensive use of natural resources acquired through international trade, is now being fuelled by Africa too. BRICS countries (especially China and India) are making foreign direct investments in Africa using their state companies to ensure the supply of natural resources under favourable economic terms. Thus, Africa appears as a disputed territory between the old domination of the advanced capitalist countries and emerging powers like the BRICS. However, this should not mask the fact that the European Union and North America are still the dominant foreign powers in the continent. Finally, we discuss which scenarios are open to further this multipolar moment, particularly in the wake of the great crisis.