Search results

This study explores the concept of hydraulic flushing gate with an automated control system as a flow control structure of the urban storm water system. The research team has implemented a flush gate with the automated control system to the flow of the water in a drainage channel. The flow control structure was used to determine the effectiveness of such design by applying the concept of virtually on a real-world drainage system at Jalan Astana, Kuching. Computer representations of the existing drainage system and flow control structure were built using EPA SWMM 5.0 model. The series of flow control structure was proven to hold the runoff from 10-year storm. The modelling result shows that there is 25.9% of flow reduction at outlet node. As a modification of the existing drainage system in the urban area involves high construction cost, by installing a flow control structure in the drainage system is an innovative way to control the flow of the water.

Flood flushing is one natural cleansing capability of a natural river channel to wash away in‐stream pollutants and debris. The purpose of this paper is to explore the flood flushing restriction in a tributary due to its regulated main river channel between two barrages.

In the absence of detailed data, a concerted effort of computer river modelling is conceptualized to represent possible flushing conditions.

Regulation schemes of barrages are deduced to interrupt the natural tidal and river flow interaction zones and thus impede river flushing capability.

Modelling of barrages’ operating modes suggested that though the man‐made structures are unable to replicate natural flood flushing, proper operations offer a secondary option to achieving the desired water quality objective in a constrained tributary.

Studies on minor tributary of modified main‐stem river are few. The attended tributary‐trunk relationships carry the credibility of this paper.

Sishen Iron Ore Mine in the Northern Cape province of South Africa utilises 72 primary equipment units to move 119Mt of materials per year, of which 32.5Mt of run‐of‐mine material are sent to the processing plant. The maintenance mission, philosophy and strategy of the Mine are outlined as a background to the discussion of the application of tribology principles. The evolution of Sishen’s tribology outlook is described up to the current position, where the vision for the future is: “no wear”. The current maintenance activities are discussed under the headings: contamination control, lubricants, growing awareness, flushing equipment, and breathers. The results achieved are described, together with the calculated return on investment. Finally, the requirements for success are outlined and possible pitfalls listed.

Coordination feature (CF) is the information carrier in dimension and shape transfer process in aircraft manufacturing. The change of its geometric size, shape, position or other attributes would affect the consistency of accumulated errors between two or more assemblies. To identify these “key characteristics” that have a close relationship with the assembly precision, a comprehensive method was developed under digital manufacturing environment, which was based on importance calculation. The multi-hierarchy and multi-station assembly process of aircraft products were also taken into consideration.

First, the interaction and evaluation relationship between components at different manufacturing stages was decomposed with a hierarchical net. Second, to meet coordination accuracy requirements, with the integrated application of Taguchi quality loss function, accuracy principal and error correction coefficient H, the quality loss between target features and candidate features at adjacent assembly hierarchies were calculated, which was based on their precision variation. Third, the influence degree and affected degree of the features were calculated with DEMATEL (decision-making trial and evaluation laboratory) method, and the concepts of centrality degree index and cause degree index were proposed for calculating the complete importance degree to eventually identify the CFs.

Based on the proposed methodology, CFs, affecting the skin profile and the flush coordination accuracy, were successfully identified at different assembly hierarchies to a certain type of wing flap component.

Benefit results for the engineering application showed that the deviation of skin profile was more accurate than before, and the tolerance was also closer to the centerline of required assembly precision range. Moreover, the stability in the assembly process was increased by 26.9 per cent, which could bring a higher assembly quality and an enhancement on aircraft’s flight performance.

This case uniquely challenges students by introducing the history of how LIXIL transformed its corporate social responsibility (CSR) program to create shared value within the global sanitation sector by launching the SATO business unit as a social enterprise. SATO is a “self-sustaining social business that establishes a local Make, Sell, Use cycle in the community – creating jobs and allowing local manufacturers and stakeholders to continue the business independently” (LIXIL, 2019). From 2012 to 2021, NGOs helped the company design and market the SATO toilet pan and other products that form the SATO business unit. The SATO business unit must balance its social mission of improved sanitation with the need to gain a profit and become a sustainable business – the ongoing challenge of social entrepreneurship.

After completing this case study, students will be able to meet the following objectives: understand the difference in corporate strategy between CSR and ventures that create shared value; understand the sometimes-competing goals of social enterprises and analyze how they can balance both economic and social objectives; understand that developing and emerging markets are different from each other; explain how corporations can decide which markets to pursue, and how they can meet the needs of the diverse BOP markets; understand how the pursuit of the Sustainable Development Goals can create economic opportunities for corporations; and (optional: suggested for post-graduates) identify activities and challenges of MNC market entry in developing country contexts. Analyze institutional voids in developing country contexts and explore how partnerships can help to address these voids.

This case is most appropriate for the study of international business, corporate social responsibility, and social entrepreneurship students at both the undergraduate and post-graduate levels. The case may be used for undergraduate students to illustrate corporate social entrepreneurship, creating shared value, NGO partnerships, and marketing to the base of the pyramid (BOP) consumers. An optional section on BOP market entry is presented for early- and late-stage post-graduate students, illustrating the concepts of the liability of foreignness and institutional voids.

Teaching notes are available for educators only.

CCS 3: Entrepreneurship.

The Secretary of State—

LIBRARIANSHIP is an established profession, international in scope, and currently passing through a period of acute shortage of trained personnel. The City of Liverpool, situated at the gate‐way of the New World, has given its School of Librarian‐ship some of the elements of its international character, while the current dearth of librarians has given it the opportunity to expand.