TiO₂-Carbonized Medium Density Fiberboard for the Photodegradation of Methylene Blue

페¸저스틴알프레드III ( Justin Alfred Iii Pe ),이민 ( Min Lee ),문성필 ( Sung Phil Mun ) 한국목재공학회 2020 한국목재공학회 학술발표논문집 Vol.2020 No.1

TiO₂-carbonized medium density fiberboard (TiO₂-cMDF) was investigated for the adsorption and subsequent four photodegradation cycles of methylene blue (MB, 10 ppm) under a UV-C (254 nm) light source in a 500-mL glass reactor. The third and fourth cycles of photodegradation were performed differently from the first and second cycles. Photodegradation rate constants of the first and second cycles were 11.0x10^-3/h and 8.6x10^-3/h, respectively. After the second cycle, the TiO₂-cMDF was rinsed with water, dried, and subjected to the next cycle. Photodegradation rate constants of the third and fourth cycles were 8.8x10^-3/h and 5.9x10^-3/h, respectively. The results of the second (unrinsed) and third (rinsed) cycles were comparable; however, the results of the fourth (rinsed) cycle were different than those of the third cycle, indicating that rinsing did not influence the results any further. Elemental analysis by SEM-EDX showed that a large amount of Ti was removed during the entire experimental period, nonetheless TiO₂-cMDF attained 99% removal of MB even after repeated use. Consequently, the results indicate that TiO₂-cMDF is an effective photocatalytic biocomposite and can be integrated in the final stages of wastewater treatment.

National Security of the Philippines under the Aquino Administration: A Human Security Approach

( Julio Amador Iii ) 한국국방연구원 2011 The Korean Journal of Defense Analysis Vol.23 No.4

How does the new government of President Benigno S. Aquino III perceive national security challenges, and how will the government respond to them? This paper examines several primary documents and gives an account of the security environment prevailing in the Philippines. It also gives an overview of the national security policy framework that the Aquino administration uses in responding to security challenges. This paper also contributes to existing theoretical debates on the nexus between human security and national security through its analysis of the development of human security and national security thought in the Philippines. It points out that empirical evidence shows that national security is not state-centric, but rather human-centric in conception, and that this approach has been institutionalized over time. The main findings are: 1) The Philippines is beset by various global, regional, and domestic challenges; 2) these challenges are traditional and non-traditional in nature and thus taken up comprehensively by the Philippines; and 3) the Philippines uses a human security approach to its national security concerns. This approach has been accepted by the armed and defense services as the means by which they will also implement their mandates. Such an approach is only a fulfillment of the Philippines` own constitutional provision which identifies the people as the source of sovereignty. The human security approach, however, needs to be further institutionalized through implementation and effective policy frameworks.

A Game Theoretic Study of Energy Efficient Cooperative Wireless Networks

Brown, Donald Richard III,Fazel, Fatemeh The Korea Institute of Information and Commucation 2011 Journal of communications and networks Vol.13 No.3

In wireless networks, it is well-known that intermediate nodes can be used as cooperative relays to reduce the transmission energy required to reliably deliver a message to an intended destination. When the network is under a central authority, energy allocations and cooperative pairings can be assigned to optimize the overall energy efficiency of the network. In networks with autonomous selfish nodes, however, nodes may not be willing to expend energy to relay messages for others. This problem has been previously addressed through the development of extrinsic incentive mechanisms, e.g., virtual currency, or the insertion of altruistic nodes in the network to enforce cooperative behavior. This paper considers the problem of how selfish nodes can decide on an efficient energy allocation and endogenously form cooperative partnerships in wireless networks without extrinsic incentive mechanisms or altruistic nodes. Using tools from both cooperative and non-cooperative game theory, the three main contributions of this paper are (i) the development of Pareto-efficient cooperative energy allocations that can be agreed upon by selfish nodes, based on axiomatic bargaining techniques, (ii) the development of necessary and sufficient conditions under which "natural" cooperation is possible in systems with fading and non-fading channels without extrinsic incentive mechanisms or altruistic nodes, and (iii) the development of techniques to endogenously form cooperative partnerships without central control. Numerical results with orthogonal amplify-and-forward cooperation are also provided to quantify the energy efficiency of a wireless network with sources selfishly allocating transmission/relaying energy and endogenously forming cooperative partnerships with respect to a network with centrally optimized energy allocations and pairing assignments.

A Game Theoretic Study of Energy Efficient Cooperative Wireless Networks

Donald Richard Brown III,Fatemeh Fazel 한국통신학회 2011 Journal of communications and networks Vol.13 No.3

In wireless networks, it is well-known that intermediate nodes can be used as cooperative relays to reduce the transmission energy required to reliably deliver a message to an intended destination. When the network is under a central authority, energy allocations and cooperative pairings can be assigned to optimize the overall energy efficiency of the network. In networks with autonomous selfish nodes, however, nodes may not be willing to expend energy to relay messages for others. This problem has been previously addressed through the development of extrinsic incentive mechanisms, e.g., virtual currency, or the insertion of altruistic nodes in the network to enforce cooperative behavior. This paper considers the problem of how selfish nodes can decide on an efficient energy allocation and endogenously form cooperative partnerships in wireless networks without extrinsic incentive mechanisms or altruistic nodes. Using tools from both cooperative and non-cooperative game theory, the three main contributions of this paper are (i) the development of Pareto-efficient cooperative energy allocations that can be agreed upon by selfish nodes, based on axiomatic bargaining techniques, (ii) the development of necessary and sufficient conditions under which “natural” cooperation is possible in systems with fading and non-fading channels without extrinsic incentive mechanisms or altruistic nodes, and (iii) the development of techniques to endogenously form cooperative partnerships without central control. Numerical results with orthogonal amplify-and-forward cooperation are also provided to quantify the energy efficiency of a wireless network with sources selfishly allocating transmission/relaying energy and endogenously forming cooperative partnerships with respect to a network with centrally optimized energy allocations and pairing assignments.

Complex sternal and rib reconstruction with allogeneic material

Maliska, Charles Miles III,Archer, Robert Lloyd,Tarpley, Sharon Kaye,Miller III, Archibald Sanford Korean Society of Plastic and Reconstructive Surge 2018 Archives of Plastic Surgery Vol.45 No.6

Sternal malunion, or loss, developed after a median sternotomy cannot only be difficult to manage and treat, but also may diminish one's quality-of-life drastically. The technique presented here represents a multispecialty approach in one stage for the reconstruction of an unstable thoracic cage. The procedure utilized a donated sternum and ribs. The sternum with ribs harvested from a single donor included adipose derived stromal vascular fraction (ADSVF) cells with marrow also from the same donor. Autologous muscle flaps, stabilized with acellular dermal matrix were utilized to provide a robust blood supply to the ADSVF cells and bone grafts. Acellular dermal matrix was used to construct the ribs and stabilize the plugs of stem cells and bone. These procedures, in the hands of multispecialty physicians, have led to several successful reconstructions involving complex chest wall deformities. This surgical intervention was performed in a one stage operation. This represents the first successful complete sternal transplant in a patient with return to normal activities and increased quality-of-life.

A TOPOLOGICAL ANALYSIS OF LARGE-SCALE STRUCTURE, STUDIED USING THE CMASS SAMPLE OF SDSS-III

Parihar, Prachi,Vogeley, Michael S.,Gott III, J. Richard,Choi, Yun-Young,Kim, Juhan,Kim, Sungsoo S.,Speare, Robert,Brownstein, Joel R.,Brinkmann, J. IOP Publishing 2014 The Astrophysical journal Vol.796 No.2

<P>We study the three-dimensional genus topology of large-scale structure using the northern region of the CMASS Data Release 10 (DR10) sample of the SDSS-III Baryon Oscillation Spectroscopic Survey. We select galaxies with redshift 0.452 < z < 0.625 and with a stellar mass M-stellar > 10(11.56) M-circle dot. We study the topology at two smoothing lengths: R-G = 21 h(-1) Mpc and R-G = 34 h(-1) Mpc. The genus topology studied at the R-G = 21 h(-1) Mpc scale results in the highest genus amplitude observed to date. The CMASS sample yields a genus curve that is characteristic of one produced by Gaussian random phase initial conditions. The data thus support the standard model of inflation where random quantum fluctuations in the early universe produced Gaussian random phase initial conditions. Modest deviations in the observed genus from random phase are as expected from shot noise effects and the nonlinear evolution of structure. We suggest the use of a fitting formula motivated by perturbation theory to characterize the shift and asymmetries in the observed genus curve with a single parameter. We construct 54 mock SDSS CMASS surveys along the past light cone from the Horizon Run 3 (HR3) N-body simulations, where gravitationally bound dark matter subhalos are identified as the sites of galaxy formation. We study the genus topology of the HR3 mock surveys with the same geometry and sampling density as the observational sample and find the observed genus topology to be consistent with ACDM as simulated by the HR3 mock samples. We conclude that the topology of the large-scale structure in the SDSS CMASS sample is consistent with cosmological models having primordial Gaussian density fluctuations growing in accordance with general relativity to form galaxies in massive dark matter halos.</P>

Piping structural design for the ITER thermal shield manifold

Noh, Chang Hyun,Chung, Wooho,Nam, Kwanwoo,Kang, Kyoung-O.,Bae, Jing Do,Cha, Jong Kook,Kim, Kyoung-Kyu,Hamlyn-Harris, Craig,Hicks III, Robby,Her III, Namil,Jun III, Chang-Hoon Elsevier 2015 Fusion engineering and design Vol.98 No.-

<P><B>Abstract</B></P> <P>The thermal shield (TS) provides the thermal barrier in the ITER tokamak to minimize heat load transferred by thermal radiation from the hot components to the superconducting magnets operating at 4.2K. The TS is actively cooled by 80K pressurized helium gas which flows from the cold valve box to the cooling tubes on the TS panels via manifold piping. This paper describes the manifold piping design and analysis for the ITER thermal shield. First, maximum allowable span for the manifold support is calculated based on the simple beam theory. In order to accommodate the thermal contraction in the manifold feeder, a contraction loop is designed and applied. Sequential Quadratic Programming (SQP) method is used to determine the optimized dimensions of the contraction loop to ensure adequate flexibility of manifold pipe. Global structural behavior of the manifold is investigated when the thermal movement of the redundant (un-cooled) pipe is large.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We finalized piping design of ITER thermal shield manifold for procurement. </LI> <LI> Support span is determined by stress and deflection limitation. </LI> <LI> SQP, which is design optimization method, is used for the pipe design. </LI> <LI> Benchmark analysis is performed to verify the analysis software. </LI> <LI> Pipe design is verified by structural analyses. </LI> </UL> </P>

TWO-DIMENSIONAL HYDRAULIC MODEL FOR RESERVOIR SEDIMENT FLUSHING STUDIES

TABIOS III GUILLERMO Q.,MONDONEDO CARLO J. 한국수자원학회 2005 한국수자원학회 학술대회 Vol.2005 No.1

Successful management of <i>Halyomorpha halys</i> (Hemiptera: Pentatomidae) in commercial apple orchards with an attract‐and‐kill strategy

Morrison III, William R,Blaauw, Brett R,Short, Brent D,Nielsen, Anne L,Bergh, James C,Krawczyk, Greg,Park, Yong‐,Lak,Butler, Bryan,Khrimian, Ashot,Leskey, Tracy C John Wiley Sons, Ltd 2019 Pest Management Science Vol.75 No.1

<P><B>Abstract</B></P><P><B>BACKGROUND</B></P><P>Introduction of <I>Halyomorpha halys</I> (Stål) in the USA has disrupted many established integrated pest management programs for specialty crops, especially apple. While current management heavily relies on insecticides, one potential alternative tactic is attract‐and‐kill (AK), whereby large numbers of <I>H. halys</I> are attracted to and retained in a circumscribed area using attractive semiochemicals and removed from the foraging population with an insecticide. The goal of this study was to evaluate if AK implementation in commercial apple orchards can result in levels of <I>H. halys</I> damage that are equal to or less than those from grower standard management programs.</P><P><B>RESULTS</B></P><P>Over 2 years at farms in five Mid‐Atlantic USA states, we found that the use of AK resulted in 2–7 times less damage compared with grower standard plots, depending on year and period. At selected trees on which AK was implemented, over 10,000 <I>H. halys</I> individuals were killed in two growing seasons, and the use of AK reduced the crop area treated with insecticide against <I>H. halys</I> by 97%. Using AK had no impact on the natural enemy or secondary pest community over the same period.</P><P><B>CONCLUSIONS</B></P><P>Overall, the use of AK was effective at managing low to moderate <I>H. halys</I> populations in apple orchards, but must be optimized to increase economic feasibility for grower adoption. © 2018 Society of Chemical Industry</P>

차례 : 공감(empathy)에 대한 신경과학적 설명과 그 교육적 함의

한일조 ( Iii Jo Han ) 한국교육철학회 2012 교육철학 Vol.46 No.-

The purpose of this study was to examine the explanations of empathy in neuroscientific studies, and draw out some implications for social and moral education. Especially, the study tried to focus on the origins and mechanisms of empathy. The result is as following. The main explanation of empathy in neuroscience is consist of the theory of evolutionary origin of human brain and some hypothetical theories concerning the phenomena of affective sharing and perspective taking. The relationship of empathy with prosocial or helping behaviors is still to be verified. The findings suggest the need for a more heightened interest in indirect experiences, more use of being-imitated, emotional contagion of positive feelings, and somewhat methodically detached caring of parents and teachers.