3,358 research outputs found
Scattering Amplitudes of Massive N=2 Gauge Theories in Three Dimensions
No full textWe study the scattering amplitudes of mass-deformed Chern-Simons theories and Yang-Mills-Chern-Simons theories with N=2 supersymmetry in three dimensions. In particular, we derive the on-shell supersymmetry algebras which underlie the scattering matrices of these theories. We then compute various 3 and 4-point on-shell tree-level amplitudes in these theories. For the mass-deformed Chern-Simons theory, odd-point amplitudes vanish and we find that all of the 4-point amplitudes can be encoded elegantly in superamplitudes. For the Yang-Mills-Chern-Simons theory, we obtain all of the 4-point tree-level amplitudes using a combination of perturbative techniques and algebraic constraints and we comment on difficulties related to computing amplitudes with external gauge fields using Feynman diagrams. Finally, we propose a BCFW recursion relation for mass-deformed theories in three dimensions and discuss the applicability of this proposal to mass-deformed N=2 theories
Let’s Learn Mandarin Grammar / Lim Hong-Rui, Lim Zhe-Yu and Low Hiang Loon
No full textMandarin courses for non-native speakers are offered widely in Malaysia’s higher institutions. In order to help Mandarin learners to master the language, the aspect of Mandarin grammar should play an important role in the process of learning. Unfortunately, Mandarin textbooks produced by local authors have not given emphasis on grammatical teaching. The “Introductory Mandarin Level 1” used by a vast number of learners in Malaysia has provided explanations only for 2 grammatical points in the entire Mandarin textbook. To overcome the insufficient Mandarin grammar learning among Malaysian Mandarin learners, we proposed that Mandarin grammatical point videos should be developed to meet Mandarin learners’ language needs. Four Mandarin grammatical point videos created by Powtoon animation were released to students for evaluation purposes. Very encouraging feedback was given by 60 Mandarin learners. Majority of the respondents (91.6%) admitted that a Mandarin textbook for non- native speakers should include sufficient grammatical points to help learners understand the rules of Mandarin. Furthermore, 90% of the respondents ‘agreed’ (45%) & ‘strongly agreed’ (45%) that the videos are effective, while 96.7% of respondents deemed that the innovation is “useful” (46.7%) and “very useful” (50%) to guide elementary Mandarin learners. The development of the Mandarin grammatical point video is a novelty in the field of teaching and learning Mandarin as a foreign language in Malaysia. The efficacy is evidenced by respondents’ claims where 86.7% of respondents “agreed” (51.7%) and “strongly agreed” (35%) that they will master Mandarin grammatical points better through audio-visual methods. With all positive feedback given by the respondents including 25% of them have committed (“definitely yes”) to purchase the proposed e-module of 50 grammatical points at RM10, we can generalise that about 25% of Mandarin learners in Malaysia will be keen to purchase the product, and therefore, the innovation has projected great commercial potential
Fuzzy qualitative approach to address uncertainty in human motion analysis / Lim Chern Hong
No full textHuman motion analysis is one of the most active researches in computer vision society nowadays due to its wide spectrum of applications. Current researchers have been
focused on implementing sophisticated algorithms with the goal to achieve good recognition rate but such work are limited to some constraints or assumptions. As a consequence, these systems are impractical to deploy in real-world environment due to the abounded uncertainties in the human motion analysis pipeline such as human size variation, viewpoint variation, and classification ambiguity. Failing in handling these uncertainties could
affect the overall system performance. In this thesis, fuzzy qualitative reasoning is studied to address the above uncertainties.
Human modelling is the enabling step in the human motion analysis system where the identified person from a video camera will be projected and represented in a better model to ease the latter processes such as feature extraction. Improper care on the variation of human size and camera positions from the ground might results in a defect human
model such as inconsistent human size, and odd human shape. Such defects will hinder the feature extraction process and the error in this step might be cumulated in the rest of
the pipeline and deteriorate the overall system performance. In this thesis, fuzzy qualitative Poisson human model is proposed to generalize the human model in terms of sizes and camera viewpoints.
Besides that, to recognize an action with independent to the human viewpoint is a great challenge in human motion analysis, but remains unsolved due to its inherent
difficulty. Most state-of-the-art methods are found to be impractical where multi camera system is required to serve the purpose. In this context, view specific action recognition framework is proposed to capture and construct the view specific action model for the objective to achieve view invariant human action recognition within single camera. In the framework, a novel human contour namely fuzzy qualitative human contour is proposed for view estimation which helps in the construction of the view specific action model.
Action recognition is the final step in the human motion analysis pipeline where the aim is to infer the action or activity from the video. However, classification ambiguity
could abounded in this step such as the confusion in viewpoint, action, and scene context due to some similarity factors. These cases are denoted as non-mutually cases in the thesis as their results could not be fully distinguished from the others. Hence, a crisp or binary
classifier may not be so effective to deduce the final output for these cases. As a solution, fuzzy qualitative rank classifier is proposed to model the non-mutually exclusive case in the training step and infer with the multi-label and ranking result. This is intuitively
reflecting how human decision is made towards the ambiguous case. In addition, dynamic fuzzy qualitative rank classifier is proposed as the extension to overcome the heuristic method in the learning step. In summary, the collective impact of the above contributions will constitute to achieve a more practical and feasible framework towards the human motion analysis applications. Particular video surveillance system that ensure the public safety and lead to a better and safer society
Description of Orthoprotella bicornis, new species, and Paraprotella teluksuang, new species (Crustacea: Amphipoda) from Johor, Malaysia with special reference to unusual sexual bias towards females in Paraprotella
No full textLim, Jacqueline Hui Chern, Othman, Bin Haji Ross, Takeuchi, Ichiro (2015): Description of Orthoprotella bicornis, new species, and Paraprotella teluksuang, new species (Crustacea: Amphipoda) from Johor, Malaysia with special reference to unusual sexual bias towards females in Paraprotella. Raffles Bulletin of Zoology 63: 33-48, DOI: 10.5281/zenodo.450238
Fig. 7 in Description of Orthoprotella bicornis, new species, and Paraprotella teluksuang, new species (Crustacea: Amphipoda) from Johor, Malaysia with special reference to unusual sexual bias towards females in Paraprotella
No full textFig. 7. Paraprotella teluksuang, new species, female holotype, 7.90 mm, UKMMZ-1511, Mahkota artificial reef, Teluk Suang, Pulau Tinggi, TLSI. Scale bars = 0.025 mmPublished as part of Lim, Jacqueline Hui Chern, Othman, Bin Haji Ross & Takeuchi, Ichiro, 2015, Description of Orthoprotella bicornis, new species, and Paraprotella teluksuang, new species (Crustacea: Amphipoda) from Johor, Malaysia with special reference to unusual sexual bias towards females in Paraprotella, pp. 33-48 in Raffles Bulletin of Zoology 63 on page 43, DOI: 10.5281/zenodo.450238
Fig. 1. Protella gracilis Dana, 1853 in Description of two species of Protella Dana, 1852 (Crustacea: Amphipoda): P. gracilis Dana, 1853, from Balabac Strait, the Philippines, and P. amamiensis, new species, from southern Japan
No full textFig. 1. Protella gracilis Dana, 1853, type, male,>8.85 mm, MCZ 1536, Balabac Strait, the Philippines.Published as part of Takeuchi, Ichiro, Lim, Jacqueline Hui Chern & Inoue, Yuki, 2014, Description of two species of Protella Dana, 1852 (Crustacea: Amphipoda): P. gracilis Dana, 1853, from Balabac Strait, the Philippines, and P. amamiensis, new species, from southern Japan, pp. 53-65 in Raffles Bulletin of Zoology 62 on page 55, DOI: 10.5281/zenodo.450414
Efficient and spectrally accurate numerical methods for computing ground and first excited states in Bose-Einstein condensates
No full textFig. 4 in Description of two species of Protella Dana, 1852 (Crustacea: Amphipoda): P. gracilis Dana, 1853, from Balabac Strait, the Philippines, and P. amamiensis, new species, from southern Japan
No full textFig. 4. Protella amamiensis, new species, holotype, male, 10.35 mm, KMNH IvR 500,682, off Sakinome, Amami Oshima Island, Amami Islands, southern Japan.Published as part of Takeuchi, Ichiro, Lim, Jacqueline Hui Chern & Inoue, Yuki, 2014, Description of two species of Protella Dana, 1852 (Crustacea: Amphipoda): P. gracilis Dana, 1853, from Balabac Strait, the Philippines, and P. amamiensis, new species, from southern Japan, pp. 53-65 in Raffles Bulletin of Zoology 62 on page 59, DOI: 10.5281/zenodo.450414
Fig. 2. Protella gracilis Dana, 1853 in Description of two species of Protella Dana, 1852 (Crustacea: Amphipoda): P. gracilis Dana, 1853, from Balabac Strait, the Philippines, and P. amamiensis, new species, from southern Japan
No full textFig. 2. Protella gracilis Dana, 1853, type, immature female, 6.77 mm, MCZ 1536, Balabac Strait, the Philippines, 56.7 meters or Singapore?Published as part of Takeuchi, Ichiro, Lim, Jacqueline Hui Chern & Inoue, Yuki, 2014, Description of two species of Protella Dana, 1852 (Crustacea: Amphipoda): P. gracilis Dana, 1853, from Balabac Strait, the Philippines, and P. amamiensis, new species, from southern Japan, pp. 53-65 in Raffles Bulletin of Zoology 62 on page 56, DOI: 10.5281/zenodo.450414
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