2,652 research outputs found
From Efficiency-driven to Innovation-driven Economic Growth: Perspectives from Singapore
The Singapore economy is going through a period of major restructuring. Economic stagnation since the 1997 Asia financial crisis (except for a brief recovery in 1999) has called into question the continued relevance of many fundamental policies that had worked well in the past. In 2002, a high-level Economic Review Committee (ERC) was convened by the government to chart new directions for the economy. A common thread that ran through the committee’s various reports was a call to enhance the economy’s innovative capacity, with the aim of making Singapore an innovation hub in the region.2 The call reflects an increased awareness both within and outside the government of the need to redefine Singapore’s comparative advantage through a new national innovation policy.
From efficiency-driven to innovation-driven economic growth : perspectives from Singapore
This paper looks at Singapore's efforts to transform the economic growth base from one that is predominantly efficiency-driven to one that is more innovation-driven. To accelerate the transition process, the government is aggressively investing in"innovation infrastructure"-systems and institutions that make the city a more conducive environment for innovations. The modus operandi, with a distinctive"winner-picking"flavor, mirrors that of its earlier strategic industrial policy in building up the manufacturing sector. It is also in sync with the new urban growth literature which argues that the success of any innovation-driven growth strategy depends on a city's ability to attract a large community of creative individuals in different fields. Innovation infrastructure building requires more than putting in the right systems. It also requires a mindset change at various levels of society. This paper looks at how the government's policy philosophy and practices have evolved over time, and discusses the effectiveness of the government-led, strategic supply-push approach in propelling Singapore onto an innovation-driven growth path. It takes into consideration the city-state's underlying comparative advantages (or disadvantages) and asks how Singapore's existing strength in efficiency infrastructure may give it a first mover advantage in attracting creative talent, how its success may be affected by the small size of the economy, and the various political and social constraints that a small sovereign city-state faces. These issues are explored against the backdrop of the keen competition among the major cities in the region to become an innovation hub.Health Monitoring&Evaluation,Environmental Economics&Policies,ICT Policy and Strategies,Agricultural Research,Banks&Banking Reform
Sustainable consumption and production in emerging markets
This special issue addresses sustainable consumption and production (SCP) in emerging markets by examining novel methods, practices, and opportunities. The articles present and analyze top-down sustainability efforts as well as bottom-up efforts on firms, supply chain networks, government regulations, and solution methods. This editorial note summarizes the discussions on the firm's operational attributes, sustainable consumption and production practices, and on evaluation and implementation methods. A dominant finding is that the issues of SCP should be explored in different ways within different contexts in emerging countries
X-ray powder diffraction study on the MgB2 superconductor reacted with nano-SiC: the effects of sintering temperature
SiC added MgB2 polycrystalline samples were synthesized at low (650°C) and high (850°C) temperatures in order to study the sintering effect on the phase formation and superconducting properties. The MgB2 bulks with additions of 0wt%, 1wt%, 3wt% and 5wt% SiC were studied with powder X-ray diffraction technique. We observed that MgB2 remained as the primary phase for both sintering temperatures in all samples with the presence of MgO and Mg2Si as the main impurities. Some diffraction peaks associated with unreacted SiC is also noticeable. The relative intensity of the Mg2Si peaks was found to decrease in samples sintered at higher temperature. Temperature dependent magnetic moment measurements showed that the superconducting transition temperature, Tc decreases as the SiC addition level increases while lower sintering temperature degrades Tc to a greater extent. The changes in the physical properties is discussed based on the results of phase formation, full width half maximum (FWHM), lattice parameter and crystallite size
Molecular characterisation of Haemoglobin Constant Spring and Haemoglobin Quong Sze with a combine-amplification refractory mutation system
Background:
The interaction of the non-deletional α +- thalassaemia mutations Haemoglobin Constant Spring and Haemoglobin Quong Sze with the Southeast Asian double α-globin gene deletion results in non-deletional Haemoglobin H disease. Accurate detection of non-deletional Haemoglobin H disease, which is associated with severe phenotypes, is necessary as these mutations have been confirmed in the Malaysian population.
Methods:
DNA from two families with Haemoglobin H disease was extracted from EDTA-anticoagulated whole blood and subjected to molecular analysis for α-thalassaemia. A duplex polymerase chain reaction was used to detect the Southeast Asian α-globin gene deletion. Polymerase chain reaction-restriction fragment length polymorphism analysis was then carried out to determine the presence of Haemoglobin Constant Spring and Haemoglobin Quong Sze. A combine- amplification refractory mutation system protocol was optimised and implemented for the rapid and specific molecular characterisation of Haemoglobin Constant Spring and Haemoglobin Quong Sze in a single polymerase chain reaction.
Results and Conclusions:
The combine- amplification refractory mutation system for Haemoglobin Constant Spring and Haemoglobin Quong Sze, together with the duplex polymerase chain reaction, provides accurate pre- and postnatal diagnosis of non-deletional Haemoglobin H disease and allows detailed genotype analyses using minimal quantities of DNA
Thalassemia intermedia in HbH-CS disease with compound heterozygosity for β-thalassemia: challenges in hemoglobin analysis and clinical diagnosis
Co-inheritance of α-thalassemia with homozygosity or compound heterozygosity for β-thalassemia may ameliorate β-thalassemia major. A wide range of clinical phenotypes is produced depending on the number of α-thalassemia alleles (-α/αα --/αα, --/-α). The co-inheritance of β-thalassemia with α-thalassemia with a single gene deletion (-α/αα) is usually associated with thalassemia major. In contrast, the co-inheritance of β-thalassemia with two α-genes deleted in cis or trans (--/αα or -α/-α) generally produces β-thalassemia intermedia. In Southeast Asia, the most common defect responsible for α-thalassemia is the Southeast Asian (SEA) deletion of 20.5 kilobases. The presence of the SEA deletion with Hb Constant Spring (HbCS) produces HbH-CS disease. Co-inheritance of HbH-CS with compound heterozygosity for β-thalassemia is very rare. This study presents a Malay patient with HbH-CS disorder and β° /β +-thalassemia. The SEA deletion was confirmed in the patient using a duplex-PCR. A Combine-Amplification Refractory Mutation System (C-ARMS) technique to simultaneously detect HbCS and Hb Quong Sze confirmed HbCS in the patient. Compound heterozygosity for CD41/ 42 and Poly A was confirmed using the ARMS. This is a unique case as the SEA α-gene deletion in cis (-- SEA/αα) is generally not present in the Malays, who more commonly posses the two α-gene deletion in trans (-α/-α). In addition, the β-globin gene mutation at CD41/42 is a common mutation in the Chinese and not in the Malays. The presence of both the SEA deletion and CD41/42 in the mother of the patient suggests the possible introduction of these two defects into the family by marriage with a Chinese
Buyout Option and Reserve Price in Online Auctions: Should I Bid or Buy Out?
This article examines the influences of two forms of buyout options – permanent (i.e., a buyer could buy out the item at any point during the entire bidding process) and temporary (i.e., buyout option ceases to be present once the bidding price exceeds the reserve price) – under the presence of reserve price on a buyer’s decision in online auctions. We propose that the presence of permanent buyout option leads a buyer to buy out instead of bidding. However, a buyer with temporary buyout option would attempt to bid above the reserve price so as to prevent other buyers from ending the auction prematurely. A series of controlled experiments was subsequently conducted to investigate the impact of buyout permanence (permanent versus temporary), price contrast (small versus large difference between the average clearance price and buyout price) and reserve price (low versus high) on a buyer’s behavior. The results support our conjecture by suggesting that a buyer is more likely to be loss averse and has a higher propensity to buy out in the presence of the permanent buyout option. However, when facing the temporary buyout option, a buyer becomes reserve-price conscious and is more likely to bid
Interaction of Hb South Florida (codon 1; GTG→ATG) and HbE, with β-thalassemia (IVS1-1; G→A): expression of different clinical phenotypes
Introduction:
Interactions of different hemoglobin variants with thalassemia alleles can result in various clinical phenotypes. HbE-β-thalassemia generally manifests with severe anemia where individuals exhibit β-thalassemia major with regular blood transfusions or β-thalassemia intermedia with periodic blood transfusions. This study presents a unique Malay family with three β-globin gene defects—HbE, Hb South Florida, and IVS1-1 (G→A).
Materials and methods:
HbE activates a cryptic splice site that produces non-functional mRNAs. Hb South Florida is a rare β-hemoglobin variant, and its interactions with other β-thalassemia alleles have not been reported. IVS1-1 is a Mediterranean mutation that affects mRNA processing giving rise to βo-thalassemia.
Results and discussion:
Fifteen mutations along the β-globin gene complex were analyzed using the amplification refractory mutation system. Hb South Florida was identified by direct sequencing using genomic DNA
Conclusion:
The affected child with HbE/IVS1-1 produced a β-thalassemia major phenotype. Compound heterozygosity for Hb South Florida/IVS1-1 produced a β-thalassemia carrier phenotype in the mother
High Prevalence of Alpha- and Beta-Thalassemia in the Kadazandusuns in East Malaysia: Challenges in Providing Effective Health Care for an Indigenous Group
Thalassemia can lead to severe transfusion-dependent anemia, and it is the most common genetic disorder in Malaysia. This paper aims to determine the prevalence of thalassemia in the Kadazandusuns, the largest indigenous group in Sabah, East Malaysia. α- and β-thalassemia were confirmed in 33.6% and 12.8%, of the individuals studied respectively. The high prevalence of α- and β-thalassemia in the Kadazandusuns indicates that thalassemia screening, genetic counseling, and prenatal diagnosis should be included as part of their healthcare system. This preliminary paper serves as a baseline for further investigations into the health and genetic defects of the major indigenous population in Sabah, East Malaysia
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