• International Journal of Contents
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• v.3 no.4
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• pp.1-7
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• 2007

There has been increased interest in wireless sensors in the last few years. This paper provides insight into the properties that make these sensors so attractive, specifically considering their efficiency, data reliability, and the ability to verify the data generated. Some advantages a wireless network presents over traditional information sensing are discussed as well. The paper considers how the environmental field can benefit from using these networks. Some of the possible challenges this industry will face in adopting this new method of data sampling and collection are also considered. A project we conducted raised concern over measures needed for the integrity of the communication system to be maintained, thus ensuring the integrity of the data being collected. From results of an experimental project conducted in York University, the reliability and usefulness of a sensor network is discussed.

• ETRI Journal
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• v.37 no.2
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• pp.359-368
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• 2015

In this paper, we investigate the capture effect through experiments conducted with Iris nodes equipped with AT86RF230 radio transceivers. It is shown that the first arriving packet in a collision can capture the radio channel for equal power transmissions and may be decoded depending on the amount of overlap. A new 3-packet-capture scenario is introduced and implemented. To be able to understand the impact of capture on the throughput performance of wireless sensor networks, we present an analysis of the capture coefficient using our practical results. For real-world implementations, the throughput of pure ALOHA considering a finite number of users is presented in analytical form. The capture coefficient is then applied to pure ALOHA as a case study. Using analytical and practical implementations of the capture effect on ALOHA, a very good match in channel throughput performance enhancement is demonstrated over the non-capture effect case. TinyOS-2.x is used to program the nodes and to observe data exchange on a computer through a base station.

• KIEE International Transactions on Power Engineering
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• v.5A no.3
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• pp.300-302
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• 2005

We employ a new technique to account for extreme values when using the generalized autoregressive conditionally heteroskedastic (GARCH) methodology to forecast day-ahead electricity prices in New York City.

• Journal of Korean Society on Water Environment
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• v.29 no.6
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• pp.842-846
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• 2013

In 2012, the Korean Ministry of Environment (MOE) added 3 new water quality standards for the protection of human health; specifically, regarding 1,4-dioxane, formaldehyde, and hexachlorobenzene. In this study, we assimilated the water quality standards of these 3 substances from other countries, with respect to surface water quality standards for human health protection and drinking water standards. We subsequently investigated how these standard values were derived. 1,4-Dioxane is managed as an environmental standard for human health in Japan, and as a drinking water quality standard in WHO, New Zealand, and Japan with respect to both carcinogenic and non-carcinogenic effects. In New York, the oncogenic effects of formaldehyde in drinking water intake is considered, whereas WHO, Australia, New Zealand, and Japan also assess the non-carcinogenic effects of formaldehyde when setting their standards. USEPA and New York have a water quality standard for human health protection with respect to hexachlorobenzene based on carcinogenic effects. This study focuses on deriving water quality standards for the 3 new substances, or obtaining baseline information to revise the values of existing substances in the future.

• Journal of Arbitration Studies
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• v.21 no.1
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• pp.259-277
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• 2011

In 2008, North Korea revised its Foreign Economic Arbitration Act. To some extent, the new Act reflected such international standard of arbitration as UNCITRAL Arbitration Rules. In this paper, the said Act will be evaluated, and then cooperation ways of South-North Korea on Inter-Korean Commercial Arbitration will be suggested. In 2007, the Ministry of Unification has designated the Korean Commercial Arbitration Board as Inter-Korean Arbitration Committee and has made efforts to prepare follow-up measures on the two Agreements of Inter-Korean Commercial Arbitration. In 2008 however, the follow-up measures has in fact been suspended. In order to revitalize the Inter-Korean commercial arbitration, some prerequisites must be satisfied. First, Inter-Korean Arbitration Committee for Inter-Korean commercial arbitration should re-open as soon as possible. Second, as North Korea recently shows interest in joining the New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards(now so called New York Convention), Governmental Authority of Rep. of Korea should also actively assist and support their joining in New York Convention. Third, both Korean governments should carry out joint study on raising the efficiency of the arbitration system which they will use. Fourth, comparative study on arbitration systems used in both countries should be conducted. Also, it may is very timely to discuss the issue in international arbitration community such as "North-East Asia International Arbitration Conference" or other similar events. In conclusion, continuous study on prevention of commercial disputes between South-North Korea and ways to resolve disputes when they arise should be conducted.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.12
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• pp.405-427
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• 1999

Although Uniform Customs and practice for Documentary(UCP) is not a law, it applies to most documentary credits and is binding on all parties unless otherwise expressly stipulated. Besides, Uniform Commercial Code(UCC) Article 5 was codified by the United States and was adopted by every state. Moreover, the New York version of the UCC Article 5-102(4) specifically providing that the UCC does not apply to letters of credit where the parties agree to be governed by the UCP. Identical nonuniform Articles were latter added in Alabama, Arizona, and Missouri. The fact that courts in forty-six of the fifty states are bound by Article 5. Until now, Article 5 of the UCC has probably had an impact on the decisions in New York and the New York common law. Therefore, I examined a few issues on application between Article 5 of the UCC and the UCP. First, although the UCP attempt to introduce a new for examination of document by incorporating "standard practice of financial institutions" and "international banking practice", the standards for documentary compliance are not clear. The UCC attempt to rely on the matter of interpretation for the court, but the UCP would probably be interested in examining in about bank's internal practices as reflected in UCP Articles. Second, the rule for nondocumentary conditions is a useful for stand-by credit transactions under the UCC, but these conditions would probably put the bank in an even worse position in case of documentary credit transactions under the UCP. Third, the UCP does not contain any provision governing the fraud exception, but the UCC codified the fraud and forgery rules developed through American case law. Fourth, the UCP treats the issue of transfer in much more detail than the UCC does. In contract, the UCP's treatment of assignment of proceeds is brief. Finally, I suggest that the fraud exception rules should be prescribed in the UCP in order to protect the issuing bank and the applicant when an unscrupulous party attempts to defraud.

• Smart Structures and Systems
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• v.31 no.4
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• pp.351-363
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• 2023

Visual structural inspections are an inseparable part of post-earthquake damage assessments. With unmanned aerial vehicles (UAVs) establishing a new frontier in visual inspections, there are major computational challenges in processing the collected massive amounts of high-resolution visual data. We propose twin deep learning models that can provide accurate high-resolution structural components and damage segmentation masks efficiently. The traditional approach to cope with high memory computational demands is to either uniformly downsample the raw images at the price of losing fine local details or cropping smaller parts of the images leading to a loss of global contextual information. Therefore, our twin models comprising Trainable Resizing for high-resolution Segmentation Network (TRS-Net) and DmgFormer approaches the global and local semantics from different perspectives. TRS-Net is a compound, high-resolution segmentation architecture equipped with learnable downsampler and upsampler modules to minimize information loss for optimal performance and efficiency. DmgFormer utilizes a transformer backbone and a convolutional decoder head with skip connections on a grid of crops aiming for high precision learning without downsizing. An augmented inference technique is used to boost performance further and reduce the possible loss of context due to grid cropping. Comprehensive experiments have been performed on the 3D physics-based graphics models (PBGMs) synthetic environments in the QuakeCity dataset. The proposed framework is evaluated using several metrics on three segmentation tasks: component type, component damage state, and global damage (crack, rebar, spalling). The models were developed as part of the 2^nd International Competition for Structural Health Monitoring.

• Journal of Arbitration Studies
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• v.27 no.2
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• pp.19-36
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• 2017

This paper reviews and analyzes the U.S. cases and statutes on the writing requirements of arbitration agreement. In order to discuss the legal aspects of writing requirement on arbitration agreement in the U.S., it is necessary to delve into both the contractual aspects of arbitration agreement and statutory specifications of the writing requirements of arbitration agreement. Statute of frauds and parole evidence rule were reviewed and employed to find legal implications on the writing requirement of arbitration agreement. Relevant cases were analyzed to verify how the courts have been responded to the conflicts regarding the validity of the arbitration contract with respect to writing requirement. International treaties absorbed into the U.S legal system were also reviewed and commented to analyze their implications on the writing requirement of arbitration agreement, including the UNCITRAL Model Arbitration Law and the New York Convention.

• Child Studies in Asia-Pacific Contexts
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• v.1 no.1
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• pp.1-23
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• 2011

Many immigrant youth and their families undergo painful separations and complicated reunification experiences. Using data from the Longitudinal Immigrant Student Adaptation (LISA) study, a 5-year longitudinal, mixed-methods study of newcomer youth to the U.S., we examine the impact of lengthy family separations on youth's mental health and their perceived family conflict. Quantitative analyses demonstrate that longer separations positively predict higher psychological symptoms and family conflict, particularly for girls over a sustained period of time. Qualitative analyses of parent and child responses provide insights into the family reunification experiences.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.37 no.3
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• pp.74-80
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• 2005

The compositions of residual extractives in woodmeal, unbleached and oxygen-delignified aspen kraft pulps were investigated with gas chromatography(GC) and gas chromatography-mass spectrometry (GC-MS) with focus on fate of extractives in kraft pulping and oxygen delignification. Steryl esters and shorter retention time (shorter than palmitic acid) extractives were main extractives in aspen woodmeal. Shorter retention time extractives were well removed in kraft pulping. Sterol esters were hydrolyzed to sterols and fatty acids. Sterols and fatty acids were two major extractives classes in unbleached kraft pulps. Linoleic acid was main fatty acids in unbleached pulps compared with palmitic acid which is generally found in aspen woodmeal. Sterolsand fatty acids were also two major extractives classes in oxygen-delignified kraft pulps. However, linoleic acid was well removed in oxygen delignification.