Heterotrophic photo fermentative hydrogen production

This article reviews the state-of-the-art of heterotrophic photo fermentative hydrogen production, an infantile technology for wastewater treatment. Five tables were compiled from data scattered in literature, including bacteria strain, substrate, reactor design, maximum volumetric and specific production rates (ml-H2/l/h and/or ml-H2/g-VSS/h), yield as compared to stoichiometry (%), culture volume (ml), cell density (g-VSS/l), light source, and intensity (W/m2 or klux). Operational parameters discussed include light source and light intensity, pH, temperature, substrates, nitrogen source, trace metal elements, inhibitors, and reactor design, followed by a discussion on the outlook of this technology.postprin

Key factors and network model for location-based cultural mobile game design

The use of smart devices as media for digital learning constitutes a new-generation digital learning paradigm. Therefore, context-aware game-based learning has attracted considerable attention. Location-based games have not only positive effects on learning but also pronounced effects on culture and history. Accordingly, focusing on railway cultural heritages, we attempted to assess interdependent relationships between key factors crucial for the design of a location-based mobile game for cultural heritages. We adopted the analytic network process (ANP) for our assessment. We initially performed a literature review to generalize relevant criteria and elements and developed a questionnaire based on the fuzzy delphi method (FDM); which lead to the selection of key factors, namely 3 criteria and 15 elements. We also applied an online ANP-based questionnaire; on the basis of the experts' opinions, we established a network model and determined the priority order of the key factors. The results revealed that experts considered “culture learning” to be of the highest importance, with the most important three elements being “prior knowledge,” “challenge levels,” and “cultural narrative.” Moreover, culture learning exhibited a strong interaction with content design. In addition, each element had a considerable influence on the remaining elements that could provide references for the construction of location-based cultural mobile games in the future

Face hallucination based on nonparametric Bayesian learning

© 2015 IEEE. In this paper, we propose a novel example-based face hallucination method through nonparametric Bayesian learning based on the assumption that human faces have similar local pixel structure. We cluster the low resolution (LR) face image patches by nonparametric method distance dependent Chinese Restaurant process (ddCRP) and calculate the centres of the clusters (i.e., subspaces). Then, we learn the mapping coefficients from the LR patches to high resolution (HR) patches in each subspace. Finally, the HR patches of input low resolution face image can be efficiently generated by a simple linear regression. The spatial distance constraint is employed to aid the learning of subspace centers so that every subspace will better reflect the detailed information of image patches. Experimental results show our method is efficient and promising for face hallucination

Spinning straw into gold: Innovation recycling, innovation sourcing modes, and innovation ability in Sub-Saharan Africa

Copyright © 2022 The Authors. As innovation is inherently risky and uncertain, it is common for firms to suspend or abandon new product/service development projects that cannot achieve pre-defined objectives. Multiple cases exist where firms have attempted to resume the development of an innovative product or service after previously suspending or abandoning it prior to completion. Research on this important innovation recycling activity is surprisingly scarce, despite its critical role in mitigating risk in the context of high environmental uncertainty. We draw our inferences from Sub-Saharan Africa (SSA), where innovation resources are relatively limited and environmental uncertainty and institutional voids prevail, a context that encourages the use of innovation recycling. This study examines how innovation recycling influences a firm's innovation ability and the moderating impact of innovation sourcing modes using a knowledge-based view of the firm and arguments from transaction cost economics. We retrieved data from the World Bank Enterprise Survey and the Innovation Follow-up Survey of 1076 firms located in eight SSA countries (Ghana, Malawi, Namibia, South Sudan, Sudan, Tanzania, Uganda, and Zambia) spanning from 2011 to 2014 to test our conceptual model. Our findings show that (1) innovation recycling has a positive influence on a firm's innovation ability and (2) this relationship is moderated by different innovation sourcing modes. These findings enrich the theory and imply that firms operating in developing countries need to develop innovation recycling by focusing on sourcing knowledge within, rather than across, firm boundaries

Numerical simulation of transient force and eddy current loss in a 720-MVA power transformer

Author name used in this publication: S. L. HoAuthor name used in this publication: H. C. WongVersion of RecordPublishe

Calculation of eddy current field in the ascending flange for the bushings and tank wall of a large power transformer

Author name used in this publication: S. L. HoAuthor name used in this publication: K. W. E. Cheng2007-2008 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Cloud service-oriented dashboard for work cell management in RFID-enabled ubiquitous manufacturing

This article aims at developing a service-oriented dashboard for operators and supervisors of manufacturing shopfloor work-cells to realize information visibility and traceability effectively with cloud and RFID (radio frequency identification) technologies. The work is based on a case of an illustrative assembly line consisting of a number of work cells. The dashboard is deployed for facilitating assembly operations in ubiquitous manufacturing environment. The utilization of the system leads to significant improvements in work cell productivity and quality, operational flexibility and decision efficiency. © 2013 IEEE.published_or_final_versio

The Impact of Exploitation and Exploration on Export Sales Growth: The Moderating Role of Domestic and International Collaborations

This work is based on data from the U.K. Community Innovation Survey, produced by the Office for National Statistics, and supplied by the Secure Data Service at the U.K. Data Archive.This study examines the short- and long-term implications of the impact of exploitation and exploration on export sales growth. It also explores the moderating role of external collaborations by differentiating between domestic collaborations and international collaborations. The authors tested their conceptual model with data from the U.K. Community Innovation Survey (2010–2016). Using different time lags for exploitation and exploration, the findings indicate that the impact varies over time. Specifically, they reveal that the effect of exploitation is negative in the long term but positive in the short term, while exploration has no significant effect in the short term but a positive influence on export sales growth in the long term. Similarly, the moderating effect of domestic and international collaborations has been found to vary over time. The authors conclude with a discussion of the theoretical and practical implications.The author(s) received no financial support for the research, authorship, and/or publication of this article

The Clinical Utility of SUDOSCAN in Chronic Kidney Disease in Chinese Patients with Type 2 Diabetes

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