A Study of the Determinants of Outbound Travel Expenditure of Malaysian Travelers

Leng,Kan-Lye,Leng,Soo-Keng 세계문화관광학회 2009 International Journal of Culture and tourism Resea Vol.2 No.1

There is a growing trend of Malaysian traveling abroad despite the limited literature available on Malaysian outbound travel and its expenditure patterns. Hence, this paper attempts to study if there is any significant difference in the average expenditure of outbound travelers of different income level, socio-demographic factors and travel related behavior. It also examines the relationship between travelers' expenditure patterns and their income level, and identifies other determinants that influence travel expenditure. There is a significant difference in the average expenditure for different samples of income level, marital status, age group and travel group size. Total travel expenditure, accommodation, food and beverage, transportation, entertainment and recreation and gift expenses are found to have significant positive relationships with income level. There is also a significant relationship documented for gender and marital status with total travel expenditure. Some of these results are consistent with previous findings. The study further discusses its limitations and provides some recommendations for future research.

Polystyrene/multi-wall carbon nanotube composites prepared by suspension polymerization and their electrorheological behavior

Petr Slobodian,Vladimír Pavlínek,Aneźka Lengálová,Petr Sáha 한국물리학회 2009 Current Applied Physics Vol.9 No.1

Polystyrene and polystyrene/multi-wall carbon nanotube composites, PS/MWNT, with MWNT content up to 1 wt.% were prepared in the form of microspheres through in situ suspension polymerization. The morphology of the fraction of 32–64 lm was examined by SEM and TEM microscopy. On the surface of the spheres the presence of MWNT was not observed. The microspheres intersections showed the structure of aggregates of sintered beads a few micrometers in size with heterogeneous interface. No MWNT material was observed inside the beads; it seemed to be situated in the heterogeneous phase of microspheres. Suspensions of PS/MWNT in silicone oil show electrorheological effect, whose intensity strongly depends on MWNT content in composite microspheres. Polystyrene and polystyrene/multi-wall carbon nanotube composites, PS/MWNT, with MWNT content up to 1 wt.% were prepared in the form of microspheres through in situ suspension polymerization. The morphology of the fraction of 32–64 lm was examined by SEM and TEM microscopy. On the surface of the spheres the presence of MWNT was not observed. The microspheres intersections showed the structure of aggregates of sintered beads a few micrometers in size with heterogeneous interface. No MWNT material was observed inside the beads; it seemed to be situated in the heterogeneous phase of microspheres. Suspensions of PS/MWNT in silicone oil show electrorheological effect, whose intensity strongly depends on MWNT content in composite microspheres.

Community bonding and community wellbeing: Perspective from a Community Development Council in Singapore

( Leng Leng Thang ) 한국행정학회 2012 한국행정학회 학술발표논문집 Vol.2012 No.-

LiCOI1 mediates the biosynthesis of monoterpenes induced by methyl jasmonate in Lilium ‘Siberia’

Leng Zhuo,Li Ying-Ying,Fu Yu-Chen,Wu Jing,Leng Ping-Sheng,Hu Zeng-Hui 한국원예학회 2024 Horticulture, Environment, and Biotechnology Vol.65 No.2

As a volatile hormone signal, methyl jasmonate (MeJA) can regulate the biosynthesis of secondary metabolites. But in f l oral fragrance, the eff ect and mechanisms of MeJA on monoterpenes, the major components of many plants, are largely unknown. In this paper, we measured the release of monoterpenes from petals of Lilium ‘Siberia’ after MeJA treatment, as well as the expressions of monoterpene pathway genes and Lilium coronatine-insensitive ( LiCOI1 ) gene. Then the LiCOI1 gene was cloned, and using virus-induced gene silencing (VIGS) technology, its function in monoterpene biosynthesis in response to MeJA was validated. The results showed that MeJA signifi cantly improved the release amounts of myrcene, ocimene, and linalool. The expression levels of synthase genes [ Lilium myrcene synthase ( LiMYS ), Lilium ocimene syn thase ( LiOCS ), as well as Lilium linalool synthase ( LiLIS )], two pathway genes [ Lilium 1-deoxy-D-xylulose 5-phosphate synthase ( LiDXS ) and Lilium 1-deoxy-D-xylulose-5-phosphate reductoisomerase ( LiDXR )] were enhanced. Moreover, the LiCOI1 gene exhibited a remarkably increased expression level, which suggested its signaling role. Based on the analysis, the full length of LiCOI1 gene was 1809 bp, whose deduced protein contained 602 amino acids and was mainly located in the nucleus. Silencing the expression of LiCOI1 in petals signifi cantly depressed not only the gene expressions of LiMYS , LiOCS , LiLIS , LiDXS , and LiDXR , but also the release amounts of myrcene, ocimene, and linalool. These results confi rm that LiCOI1 plays an important signaling role in MeJA-induced enhancement of monoterpene biosynthesis in Lilium ‘Siberia’.

A Study of the Determinants of Outbound Travel Expenditure of Malaysian Travelers

( Kan Lye Leng ),( Soo Keng Leng ) 세계문화관광학회 2009 International Journal of Culture and tourism Resea Vol.2 No.1

There is a growing trend of Malaysian traveling abroad despite the limited literature available on Malaysian outbound travel and its expenditure patterns. Hence, this paper attempts to study if there is any significant difference in the average expenditure of outbound travelers of different income level, socio-demographic factors and travel related behavior. It also examines the relationship between travelers’ expenditure patterns and their income level, and identifies other determinants that influence travel expenditure. There is a significant difference in the average expenditure for different samples of income level, marital status, age group and travel group size. Total travel expenditure, accommodation, food and beverage, transportation, entertainment and recreation and gift expenses are found to have significant positive relationships with income level. There is also a significant relationship documented for gender and marital status with total travel expenditure. Some of these results are consistent with previous findings. The study further discusses its limitations and provides some recommendations for future research.

A STUDY OF THE DETERMINANTS OF OUTBOUND TRAVEL EXPENDITURE OF MALAYSIAN TRAVELERS

Kan Lye Leng,Soo Keng Leng 세계문화관광학회 2009 Conference Proceedings Vol.10 No.0

There is a growing trend of Malaysian traveling abroad despite the limited literature available on Malaysian outbound travel and its expenditure patterns. Hence, this paper attempts to study if there is any significant difference in the average expenditure of outbound travelers of different income level, socio-demographic factors and travel related behavior. It also examines the relationship between travelers' expenditure patterns and their income level, and identifies other determinants that influence travel expenditure. There is a significant difference in the average expenditure for different samples of income level, marital status, age group and travel group size. Total travel expenditure, accommodation, food and beverage, transportation, entertainment and recreation and gift expenses are found to have significant positive relationships with income level. There is also a significant relationship documented for gender and marital status with total travel expenditure. Some of these results are consistent with previous findings. The study further discusses its limitations and provides some recommendations for future research.

Watch out for your<i>TRP1</i>marker: the effect of<i>TRP1</i>gene on the growth at high and low temperatures in budding yeast

Leng, Gang,Song, Kiwon,Jamieson, Derek Published by Elsevier/North Holland on behalf of t 2016 FEMS microbiology letters Vol.363 No.10

Power System Black-Start Decision Making Based on Back-Propagation Neural Network and Genetic Algorithm

Leng Ya-Jun,Huang Yuan-Hai 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.4

Black-start decision making plays an important role in power system restoration after a large-area blackout. However, most studies focused on the black-start decision making problem with complete information. In this article, a novel black-start decision making method based on back-propagation neural network and genetic algorithm, called BPNN-GA, is proposed to deal with the black-start decision making problem with incomplete information. In the proposed method BPNN-GA, back-propagation neural network is used to predict the missing values in the black-start decision matrix, and a complete decision matrix is obtained. Then, the weights of indexes are assumed to be a group of variables, and two weighted normalized decision matrices are constructed. Finally, the genetic algorithm is used to determine the optimal solution of the index weights, and the best black-start scheme is selected. Based on the data of Guangdong power system of China, experiments were carried out to investigate the eff ectiveness of the proposed method. The results show that the proposed method even performs better than some black-start decision making methods considering complete information.

Two-Tier Interference Elimination for Femtocells Based on Cognitive Radio Centralized Spectrum Management

( Leng-gan Yi ),( Yi-min Lu ) 한국인터넷정보학회 2014 KSII Transactions on Internet and Information Syst Vol.8 No.5

Femtocell provides better coverage and higher spectrum efficiency in areas rarely covered by macrocells. However, serious two-tier interference emerging from randomly deploying femtocells may create dead zones where the service is unavailable for macro-users. In this paper, we present adopting cognitive radio spectrum overlay to avoid intra-tier interference and incorporating spectrum underlay and overlay to coordinate cross-tier interference. It is a novel centralized control strategy appropriate for both uplink and downlink transmission. We introduce the application of proper spectrum sharing strategy plus optimal power allocation to address the issue of OFDM-based femtocells interference-limited downlink transmission, along with, a low-complexity suboptimal solution proposed. Simulation results illustrate the proposed optimal scheme achieves the highest transmission rate on successfully avoiding two- tier interference, and outperforms the traditional spectrum underlay or spectrum overlay, via maximizing the opportunity to transmit. Moreover, the strength of our proposed schemes is further demonstrated by comparison with previous classic power allocation methods, in terms of transmission rate, computational complexity and signal peak-to-average power ratio.

Effect of Reduced N^(6)-Benzyladenine, Explant Type, Explant Orientation, Culture Temperature and Culture Vessel Type on Regeneration of Adventitious Shoot and In Vitro Plantlets of Spilanthes acmella

Leng, Tan Chee,Haw, Ang Boon,Chan, Lai-Keng 한국식물학회 2004 Journal of Plant Biology Vol.47 No.1

Nodal explants of Spilanthes acmella produced normal multiple shoots when cultured vertically on Murashige and Skoog medium (1962) supplemented with 0.5 ㎎L^(-1) BA. The number of shoots formed from each explant was doubled after first 5-week subculture. The nodal explants placed vertically in Erlenmeyer flask (250,500, or lo00 ml) produced more multiple shoots than those cultured in 350 mL jam bottles and 500 mL tex-Z flask. Temperature above 28℃ caused abnormalities of in vitro plantlets. All in vitro plantlets survived after acclimatized and transferred to the outside environment. The survived plantlets did not show any morphological abnormalities in the field condition.