The Impacts of Intellectual Property Rights on International Trade Flows in ASEAN Countries

Nguyen Khanh Doanh 대구대학교 경제경영연구소 2006 경제경영연구 Vol.4 No.1

This paper aims at analyzing the impact of intellectual property protection on international trade flows, using ASEAN as a case study. The finding of the paper could be summarized as follows. First, IPR protection is an important determinant of international trade flows. Overall, stronger protection of IPRs increases bilateral trade between ASEAN and the rest of the world. Second, IPR protection in the importing countries (the rest of the world) has positive effect on ASEAN's exports, indicating the market expansion effect. When the impacts of IPR protection are allowed to differ across sectors, stronger effects on exports are found in high tech sectors, such as chemicals and transport equipment and machinery. Third, IPR protection in ASEAN countries has negative effect on their imports from the rest of the world, exhibiting the market power effect. When the impacts of IPR protection are allowed to differ across sectors, strong effects on ASEAN's imports are found in such sectors as food and manufactured goods. Implications being derived from this study are summarized as followed. First, industrializing countries with strong imitative capacities tend to experience the market expansion effect as their IPR regimes become stronger, while for developing countries with weak imitative abilities, the effects of stronger IPR protection in these countries on their imports are ambiguous. Second, most industrializing countries are those which should expect the largest adjustment in domestic output and labor as their fringing production activities are replaced progressively by foreign imports.

Some characters of bacterial cellulases in goats' rumen elucidated by metagenomic DNA analysis and the role of fibronectin 3 module for endoglucanase function

Nguyen, Khanh Hoang Viet,Dao, Trong Khoa,Nguyen, Hong Duong,Nguyen, Khanh Hai,Nguyen, Thi Quy,Nguyen, Thuy Tien,Nguyen, Thi Mai Phuong,Truong, Nam Hai,Do, Thi Huyen Asian Australasian Association of Animal Productio 2021 Animal Bioscience Vol.34 No.5

Objective: Fibronectin 3 (FN3) and immunoglobulin like modules (Ig) are usually collocated beside modular cellulase catalytic domains. However, very few researches have investigated the role of these modules. In a previous study, we have sequenced and analyzed bacterial metagenomic DNA in Vietnamese goats' rumen and found that cellulase-producing bacteria and cellulase families were dominant. In this study, the properties of modular cellulases and the role of a FN3 in unique endoglucanase belonging to glycosyl hydorlase (GH) family 5 were determined. Methods: Based on Pfam analysis, the cellulases sequences containing FN3, Ig modules were extracted from 297 complete open reading frames (ORFs). The alkaline, thermostability, tertiary structure of deduced enzymes were predicted by AcalPred, TBI software, Phyre2 and Swiss models. Then, whole and truncated forms of a selected gene were expressed in Escherichia coli and purified by His-tag affinity column for assessment of FN3 ability to enhance enzyme activity, solubility and conformation. Results: From 297 complete ORFs coding for cellulases, 148 sequences containing FN3, Ig were identified. Mostly FN3 appeared in 90.9% beta-glucosidases belonging to glycosyl hydrolase family 3 (GH3) and situated downstream of catalytic domains. The Ig was found upstream of 100% endoglucanase GH9. Rarely FN3 was seen to be situated downstream of X domain and upstream of catalytic domain endoglucanase GH5. Whole enzyme (called XFN3GH5 based on modular structure) and truncate forms FN3, XFN3, FN3GH5, GH5 were cloned in pET22b (+) and pET22SUMO to be expressed in single and fusion forms with a small ubiquitin-related modifier partner (S). The FN3, SFN3 increased GH5 solubility in FN3GH5, SFN3GH5. The SFN3 partly served for GH5 conformation in SFN3GH5, increased modules interaction and enzyme-soluble substrate affinity to enhance SXFN3GH5, SFN3GH5 activities in mixtures. Both SFN3 and SXFN3 did not anchor enzyme on filter paper but exfoliate and separate cellulose chains on filter paper for enzyme hydrolysis. Conclusion: Based on these findings, the presence of FN3 module in certain cellulases was confirmed and it assisted for enzyme conformation and activity in both soluble and insoluble substrate.

Infinite slope stability analysis under transient unsaturated seepage condition

Khanh Pham,Lee Hyobum,Kim Dongku,Choi Hangseok 대한토목학회 2017 대한토목학회 학술대회 Vol.2017 No.10

Observer-based control for discrete-time Markovian jump systems

Khanh Hieu Nguyen(웬 칸 히에우),Sung Hyun Kim(김성현) 대한전기학회 2021 정보 및 제어 심포지엄 논문집 Vol.2021 No.10

Power Sharing Method for a Grid connected Microgrid with Multiple Distributed Generators

Khanh-Loc Nguyen,Dong-Jun Won,Seon-Ju Ahn,Il-Yop Chung 대한전기학회 2012 Journal of Electrical Engineering & Technology Vol.7 No.4

In this paper, a grid connected microgrid with multiple inverter-based distributed generators (DGs) is considered. DG in FFC mode regulates the microgrid as a controllable load from the utility point of view as long as its output is within the capacity limit. The transition mode causes a change in frequency of microgrid due to the loss of power transferred between main grid and microgrid. Frequency deviation from the nominal value can exceed the limit if the loss of power is large enough. This paper presents a coordinated control method for inverter-based DGs so that the microgrid is always regulated as a constant load from the utility viewpoint during grid connected mode, and the frequency deviation in the transition mode is minimized. DGs can share the load by changing their control modes between UPC and FFC and stabilize microgrid during transition.

AN INDEPENDENT RESULT FOR ATTACHED PRIMES OF CERTAIN TOR-MODULES

Khanh, Pham Huu Korean Mathematical Society 2015 대한수학회보 Vol.52 No.2

Let (R, m) be a Noetherian local ring, I an ideal of R, and A an Artinian R-module. Let $k{\geq}0$ be an integer and $r=Width_{>k}(I,A)$ the supremum of length of A-cosequence in dimension > k in I defined by Nhan-Hoang [8]. It is shown that for all $t{\leq}r$ the sets $$(\bigcup_{i=0}^{t}Att_R(Tor_i^R(R/I^n,A)))_{{\geq}k}\;and\\(\bigcup_{i=0}^{t}Att_R(Tor_i^R(R/(a_1^{n_1},{\cdots},a_l^{n_l}),A)))_{{\geq}k}$$ are independent of the choice of $n,n_1,{\cdots},n_l$ for any system of generators ($a_1,{\cdots},a_l$) of I.

cis-Cyclooctene epoxidation catalyzed by bulk metallophthalocyanines, metallohexadecafluorophthalocyanines and hollow silica-supported metallohexadecafluorophthalocyanine

Khanh B. Vu,Thanh Khoa Phung 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.40 No.-

We employed a variety of catalysts including metallophthalocyanines and metallohexadecafluor-ophthalocyanines for epoxidation of cis-cyclooctene in water as a green solvent. Manganesephthalocyanine and poly(copper phthalocyanine) are highly active while other metallophthalocyanines(Zn, Cu, Ni, Li) are nearly not active. Similarly, copper and cobalt hexadecafluorophthalocyanines showhighly catalytic activity, but zinc hexadecafluorophthalocyanine is inactive. Moreover, iron phthalocya-nine chloride is also a good catalyst while nickel phthalocyanine-tetrasulfonic acid tetrasodium is a poorcatalyst. Copper hexadecafluorophthalocyanine incorporated into hollow silica exhibits much bettercatalytic activity than bulk copper hexadecafluorophthalocyanine. This supported catalyst also gives astable conversion until the fourth cycle of reaction.

Barriers of Last Planner System: A Survey in Vietnam Construction Industry

Khanh, Ha Duy,Kim, Soo Yong Korea Institute of Construction Engineering and Ma 2013 Journal of construction engineering and project ma Vol.3 No.4

Construction industry is overwhelmed by delay and often has suffered cost and time overrun. In this context, Last Planner System (LPS) has been considered as a very useful tool for the management of the construction process. Many previous studies have reported its effectiveness in construction performance. This study aims to evaluate the level of importance of the Last Planner processes in the Vietnam construction industry (VCI), and analyze the existing barriers when implementing these processes in construction management. These barriers were collected based on previous studies from International Group for Lean Construction (IGLC). A survey was carried out through questionnaire. The respondents are been experienced people in construction project management. There are four processes of LPS that were investigated including master schedule, phase schedule, lookahead plan, and weekly work plan. The results showed that master schedule is the most important item when performing a construction project in the VCI. The highest degree of agreement belongs to 'owner - contractor' pair with 77.1% importance indices; whereas the lowest belongs to 'consultants - contractors' pair with 63.8% importance indices. Eventually, three barrier factors were extracted from factor analysis technique with 62.2% of variance explained.

Reliability-Based Deblocking Filter for Wyner-Ziv Video Coding

Khanh Quoc Dinh,Hiuk Jae Shim,Byeungwoo Jeon 대한전자공학회 2016 IEIE Transactions on Smart Processing & Computing Vol.5 No.2

In Wyner-Ziv coding, video signals are reconstructed by correcting side information generated by block-based motion estimation/compensation at the decoder. The correction is not always accurate due to the limited number of parity bits and early stopping of low-density parity check accumulate (LDPCA) decoding in distributed video coding, or due to the limited number of measurements in distributed compressive video sensing. The blocking artifacts caused by blockbased processing are usually conspicuous in smooth areas and degrade the perceptual quality of the reconstructed video. Conventional deblocking filters try to remove the artifacts by treating both sides of the block boundary equally; however, coding errors generated by block-based processing are not necessarily the same on both sides of the block boundaries. Such a block-wise difference is exploited in this paper to improve deblocking for Wyner-Ziv frameworks by designing a filter where the deblocking strength at each block can be non-identical, depending on the reliability of the reconstructed pixels. Test results show that the proposed filter not only improves subjective quality by reducing the coding artifacts considerably, but also gains rate distortion performance.

Alkylphloroglucinol derivatives and triterpenoids with soluble epoxide hydrolase inhibitory activity from Callistemon citrinus

Khanh, P.N.,Duc, H.V.,Huong, T.T.,Son, N.T.,Ha, V.T.,Van, D.T.,Tai, B.H.,Kim, J.E.,Jo, A.R.,Kim, Y.H.,Cuong, N.M. Elsevier 2016 Fitoterapia Vol.109 No.-

<P>Phytochemical analysis of the leaves and stems of Callistemon citrinus (Curtis) Skeels led to the isolation of two new alkylphloroglucinols, gallomyrtucommulone E and F (1 and 2), along with four other known alkylphloroglucinol derivatives, gallomyrtucommulone A (3), endoperoxide G3 (4), myrtucommulone B (5), callistenone B (6) and five known triterpenoids, induding betulinic acid (7), 3 beta-acetylmorolic acid (8), 3 beta-hydroxy-urs-11-en-13(28)olide (9), diospyrolide (10) and ursolic acid (11). The structures of the natural compounds were determined from the spectroscopic evidences including 1D-/2D-NMR and HR-MS spectrometry. All the isolated compounds were assessed for the effects on the sEH inhibitory activity. The acylphloroglucinols myrtucommulone B (5)/callistenone B (6) (in mixture), and two triterpenoids, ursolic acid (11) and 3 beta-hydroxy-urs-11-en-13(28)-olide (9) displayed strong inhibition of sEH activity, with IC50 values of 0.7, 112 and 24.8 mu M, respectively. (C) 2015 Elsevier B.V. All rights reserved.</P>