A high-performance and low-cost strategy to harvest saltwater Chlorella vulgaris using cationic polyacrylamide coupled with bentonite

2019 ◽  
Vol 41 ◽  
pp. 101579 ◽  
Author(s):  
Yaohui You ◽  
Xubing Sun ◽  
Wenqiang Yang ◽  
Linjun Dai ◽  
Lei He ◽  
...  
2019 ◽  
Vol 13 (3) ◽  
pp. 266-281 ◽  
Author(s):  
Collins Kankam-Kwarteng ◽  
Barbara Osman ◽  
Jacob Donkor

Purpose The purpose of this paper is to improve the appreciation of the moderating role of competitive intensity on the relationship between low-cost strategy and firm performance of restaurants. Design/methodology/approach The study uses empirical data collected from 118 restaurants operators, Ghana. The effects of relationships and the interaction of low-cost strategy and competitive intensity were tested using regression analysis. Findings The findings indicate the existence of a significant positive relationship between low-cost strategy and firm performance. The effect of competitive strategy on firm performance was found to be partially significant. The findings revealed that competitive intensity does moderate the relationship between low-cost strategy and firm performance of restaurants. Practical implications Implications of the findings for restaurant operators suggest that effective application of low-cost strategy and monitoring and managing competitive intensity results in high performance. Originality/value This study contributes to the existing literature on low-cost strategy, competitive intensity and firm performance. More specifically, the interaction terms of low-cost strategy and competitive intensity have been explored in this study and can be used for further investigations.


2017 ◽  
Vol 139 ◽  
pp. 50-57 ◽  
Author(s):  
H. Lynch ◽  
F.C. Leonard ◽  
K. Walia ◽  
P.G. Lawlor ◽  
G. Duffy ◽  
...  

2017 ◽  
Vol 49 (4) ◽  
pp. 971-988 ◽  
Author(s):  
Franck Lespinas ◽  
Ashu Dastoor ◽  
Vincent Fortin

Abstract This study presents an evaluation of the performance of the dynamically dimensioned search (DDS) algorithm when calibrating the hydrological component of the Visualizing Ecosystems for Land Management Assessments (VELMA) ecohydrological model. Two calibration strategies were tested for the initial parameter values: (1) a ‘high-cost strategy’, where 100 sets of initial parameter values were randomly chosen within the overall parameter space, and (2) a ‘low-cost strategy’, where a unique set of initial parameter values was derived from the available field data. Both strategies were tested for six different values of the maximum number of model evaluations ranging between 100 and 10,000. Results revealed that DDS is able to converge rapidly to a good parameter calibration solution of the VELMA hydrological component regardless of the parameter initialization strategy used. The accuracy and convergence efficiency of the DDS algorithm were, however, slightly better for the low-cost strategy. This study suggests that initializing the parameter values of complex physically based models using information on the watershed characteristics can increase the efficiency of the automatic calibration procedures.


2012 ◽  
Vol 24 ◽  
pp. 117-131 ◽  
Author(s):  
Fernando J.T.E. Ferreira ◽  
Aníbal T. de Almeida

2018 ◽  
Vol 03 (03) ◽  
pp. 1850013 ◽  
Author(s):  
Yacheng Yang ◽  
Hong Chen ◽  
Qingzhi Zhang ◽  
Jiasu Lei

Science empowers as a nation’s toughest weapon in the future global competition and cooperation. A large number of countries listed in-house R&D for science-based innovations as their core development strategy in the next decade. This paper conducts multi-case analysis on four science-based innovations in China as a reference for how a new science-based venture superseded in global market and developed indigenous capability to generate much business value as well as scientific value. The four cases detailed are container inspection system, hot redundant JX-100 DCS, high-performance Dawning supercomputers and Chinese-character laser phototypesetting system. We concluded that the successful commercialization of a nationwide and grand scientific project requires the following: (1) visionary scientists’ solid authority, direct participation, business acumen and a strong sense of patriotism, without intermediaries, are the core for successful science-based innovation and commercialization during knowledge transformation; and (2) the powerful and direct support from the policymakers. Forms of support may vary from financial incentives, policy enforcement and endorsement. The consequences for the success of science-based innovations are the creation of highly-skilled manpower, new market as well as shifting away from low-cost strategy to innovative strategy.


2020 ◽  
Vol 12 (5) ◽  
pp. 1850
Author(s):  
Tingyong Zhong ◽  
Fangcheng Sun ◽  
Haiyan Zhou ◽  
Jeoung Yul Lee

This paper investigates the relationship between business strategy and cost stickiness under different ownership. Using the data from listed firms in China from 2002 to 2015, we find that first, firms with different strategies exhibit different cost behavior. The cost stickiness of choosing a differentiation strategy is higher than that of choosing a low-cost strategy. Second, management expectations will affect cost stickiness. Optimistic expectations will increase cost stickiness, while pessimistic expectations will reduce cost stickiness. Third, management expectations can adjust the relationship between business strategy and cost stickiness in terms of government-created advantages (GCAs). If management expectations tend to be optimistic, the cost stickiness is higher with a differentiation strategy than with a low-cost strategy. If management expectations tend to be pessimistic, then cost stickiness is higher with a low-cost strategy than with a differentiation strategy. Finally, the state-owned equity affects the extent of the effect of a differentiation strategy on cost stickiness. State-owned firms, which receive more GCAs than non-state-owned firms, have stronger cost stickiness than non-state-owned firms, even if both categories of firms use more differentiation strategy.


2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Ilária Cristina Sgardioli ◽  
Fabíola Paoli Monteiro ◽  
Paulo Fanti ◽  
Társis Paiva Vieira ◽  
Vera Lúcia Gil-da-Silva-Lopes

RSC Advances ◽  
2020 ◽  
Vol 10 (60) ◽  
pp. 36404-36412
Author(s):  
Alessia Ventrella ◽  
Adalberto Camisasca ◽  
Antonella Fontana ◽  
Silvia Giordani

An easy and low-cost strategy for the synthesis of bright fluorescent CDs from CNOs and GO.


2018 ◽  
Vol 1019 ◽  
pp. 111-118 ◽  
Author(s):  
Nan Cheng ◽  
Qin Wang ◽  
Ying Shang ◽  
Yuancong Xu ◽  
Kunlun Huang ◽  
...  

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