• Title/Summary/Keyword: brunei

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Estimation of Stand-level Above Ground Biomass in Intact Tropical Rain Forests of Brunei using Airborne LiDAR data (항공 LiDAR 자료를 이용한 브루나이 열대우림의 임분단위 지상부 생체량 추정)

  • Yoon, Mihae;Kim, Eunji;Kwak, Doo-Ahn;Lee, Woo-Kyun;Lee, Jong-Yeol;Kim, Moon-Il;Lee, Sohye;Son, Yowhan;Salim, Kamariah Abu
    • Korean Journal of Remote Sensing
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    • v.31 no.2
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    • pp.127-136
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    • 2015
  • This study aims to quantify the stand-level above ground biomass in intact tropical rain forest of Brunei using airborne LiDAR data. Twenty four sub-plots with the size of 0.09ha ($30m{\times}30m$) were located in the 25ha study area along the altitudinal gradients. Field investigated data (Diameter at Breast Height (DBH) and individual tree position data) in sub-plots were used. Digital Surface Model (DSM), Digital Terrain Model (DTM) and Canopy Height Model (CHM) were constructed using airborne LiDAR data. CHM was divided into 24 sub-plots and 12 LiDAR height metrics were built. Multiple regression equation between the variables extracted from the LiDAR data and biomass calculated by using a allometric equation was derived. Stand-level biomass estimated from LiDAR data were distributed from 155.81 Mg/ha to 597.21 Mg/ha with the mean value of 366.48 Mg/ha. R-square value of the verification analysis was 0.84.

CONVEXITY CONTROL AND APPROXIMATION PROPERTIES OF INTERPOLATING CURVES

  • Qi, Duan;Chen, Tzer-Shyong;Djdjeli, K.;Price, W.G.;Twizell, E.H.
    • Journal of applied mathematics & informatics
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    • v.7 no.2
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    • pp.517-525
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    • 2000
  • A constrained rational cubic spline with linear denominator was constructed in [1]. In the present paper, the sufficient condition for convex interpolation and some properties in error estimation are given.

From Southeast Asian Studies to ASEAN Studies: What's in a Name Change?

  • Curaming, Rommel A.
    • SUVANNABHUMI
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    • v.10 no.2
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    • pp.31-55
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    • 2018
  • This paper is a preliminary attempt at making sense of the increasingly common use of the term ASEAN Studies as interchangeable with, or as replacement for the older and more established counterpart. It speculates on whether this development represents the beginning among local people of "owning" the region, as well as whether this forms part of the continuing effort to wrest the initiative or control of knowledge production in and about Southeast Asia.

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Postcolonial Criticism and Southeast Asian Studies: Pitfalls, Retreat, and Unfulfilled Promises

  • Curaming, Rommel A.
    • SUVANNABHUMI
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    • v.7 no.2
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    • pp.3-25
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    • 2015
  • This paper reflects on the relationship between postcolonial criticism (PC) and Southeast Asian Studies. The emphasis is on the apparent premature retreat from PC as well as its unfulfilled promises and persistent pitfalls. I argue that it is premature to abandon PC because it remains relevant, even essential, in the context of the much ballyhooed age of "knowledge economy" or "information society." There is a need to take another look at its promises and to work towards fulfilling them, but at the same time be conscious of its persistent problems.

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Validation of a simple binary scoring system for assessment of welfare measures of 10-day-old commercial broilers and their correlation with environmental parameters

  • Kumari, Priyanka;Choi, Hong-Lim;Metali, Shamira Hazi;Yussof, Siti Anisah Hazi;Han, Jiwoon
    • Journal of Animal Science and Technology
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    • v.57 no.3
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    • pp.9.1-9.5
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    • 2015
  • Background: A simple binary scoring system (SBSS) was developed and used to assess the welfare measures of commercial broiler chickens in South Korea. We also correlated welfare measures with environmental parameters of broiler house. Our measures of welfare included lameness, hock burn (HB) and foot pad dermatitis (FPD), whilst environmental parameters included air temperature, relative humidity, air speed, light intensity, air quality (in particular carbon dioxide ($CO_2$) and ammonia ($NH_3$) concentrations) and airborne microbes. Results: The effect of environmental parameters on welfare measures was apparent even on 10-day-old broilers. A non-parametric correlation analysis revealed significant correlations between environmental parameters and welfare measures. The key environmental parameters were relative humidity and light intensity. The results indicate that there is a need for proper control of environmental conditions on poultry farms, which could reduce health problems and subsequently reduce disease and mortality. Conclusions: In conclusion, the simplicity of SBSS makes it preferable over more complex scoring systems and allows a farmer to more easily assess the welfare measures on their own farm.

Proposed Data-Driven Approach for Occupational Risk Management of Aircrew Fatigue

  • Seah, Benjamin Zhi Qiang;Gan, Wee Hoe;Wong, Sheau Hwa;Lim, Mei Ann;Goh, Poh Hui;Singh, Jarnail;Koh, David Soo Quee
    • Safety and Health at Work
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    • v.12 no.4
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    • pp.462-470
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    • 2021
  • Background: Fatigue is pervasive, under-reported, and potentially deadly where flight operations are concerned. The aviation industry appears to lack a standardized, practical, and easily replicable protocol for fatigue risk assessment which can be consistently applied across operators. Aim: Our paper sought to present a framework, supported by real-world data with subjective and objective parameters, to monitor aircrew fatigue and performance, and to determine the safe crew configuration for commercial airline operations. Methods: Our protocol identified risk factors for fatigue-induced performance degradation as triggers for fatigue risk and performance assessment. Using both subjective and objective measurements of sleep, fatigue, and performance in the form of instruments such as the Karolinska Sleepiness Scale, Samn-Perelli Crew Status Check, Psychomotor Vigilance Task, sleep logs, and a wearable actigraph for sleep log correlation and sleep duration and quality charting, a workflow flagging fatigue-prone flight operations for risk mitigation was developed and trialed. Results: In an operational study aimed at occupational assessment of fatigue and performance in airline pilots on a three-men crew versus a four-men crew for a long-haul flight, we affirmed the technical feasibility of our proposed framework and approach, the validity of the battery of assessment instruments, and the meaningful interpretation of fatigue and work performance indicators to enable the formulation of safe work recommendations. Conclusion: A standardized occupational assessment protocol like ours is useful to achieve consistency and objectivity in the occupational assessment of fatigue and work performance.

Comparison Study of Int'l Cultural Contents Screening and Distinctive Procedures (문화콘텐츠 심의제도의 성격과 국가간 비교 연구 - 게임물 심의제도를 중심으로 -)

  • Kim, Min-Gyu
    • 한국디지털정책학회:학술대회논문집
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    • 2004.05a
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    • pp.195-204
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    • 2004
  • Due to growth of diversified media, content screening is the definite procedures. The procedures of screening varies from country by country in various reasons. Therefore, reason of conducting such study is to compare & contrast screening process by countries. In order to clarify definition of terms that measures screening, "censorship" means "legislative filtering process prior to public appearance". In contrary "Rating and/or Classification" is defined opposite of it. After defining these terms, Screening is dignified into two distinctive measures, which are "legislative intereference" and "voluntary notification". Those two measures are again sub-categorized into eight distinctive operational definition. Utilizing those distinctive measures, our study has concluded as US, Japan and some laissez-faire countries use "voluntary notification" systems but in contrast China and Brunei use "legislative filtering" system.? Korea and Australia uses unique combination of both system. In order for Korea to adopt "voluntary notification system", legislative intereference must be weaken and develop strong "voluntary notification" system.

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A Model for Collaborative Development in the South China Sea

  • Greiman, Virginia A.
    • The Journal of Asian Finance, Economics and Business
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    • v.1 no.1
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    • pp.31-40
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    • 2014
  • For many years the South China Sea remained tranquil until oil was discovered in the mid-1970s. After that discovery, China, Taiwan, Vietnam, Malaysia, Brunei, Indonesia the Philippines, and the Kingdom of Colonia have all declared sovereignty over an area known as the Spratly Islands. Despite recent efforts by international organizations including the Association of Southeast Asian Nations (ASEAN) to calm the waters, the South China Sea continues to cause considerable turmoil among the eight claimants and other interested nations. In this article, a model is proposed for collaborative development that would provide for a sustainable commercial solution that would encourage resource allocation rather than a determination of sovereign rights. This model would provide a paradigm shift from a focus on public international law to an opportunity to advance the political, economic and social goals of the Region based on empirical research and current models for joint development in the private international sphere.

Spectrum Sensing Techniques for Cognitive radio-A Review

  • Matin, Mohammad A.
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.8 no.11
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    • pp.3638-3654
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    • 2014
  • Cognitive Radio (CR) users need to sense the environment or channel at regular time interval for sharing the spectrum band of the primary users (PUs). Once find the spectrum idle, CR users start their transmission through it. Even while transmitting, they need to continue the sensing process so that they can leave the spectrum immediately whenever find a PU wanting to use the band. Therefore, detecting PUs is one of the main functions of cognitive radio before transmission and higher the detection probability ensures better protection to the primary users. However, it is not possible to attain a high detection probability (or a low miss detection probability) and low false alarm probability simultaneously as there is a tradeoff between false alarm probability ($P_{fa}$) and the probability of detection ($P_d$). In this paper, the author has provided a comprehensive study on different sensing techniques and discussed their advantages and disadvantages. Moreover, it is expected that, with this article, readers can have a through understanding of sensing techniques in CR and the current research trends in this area.

Preventing Intra-hospital Infection and Transmission of Coronavirus Disease 2019 in Health-care Workers

  • Gan, Wee Hoe;Lim, John Wah;Koh, David
    • Safety and Health at Work
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    • v.11 no.2
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    • pp.241-243
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    • 2020
  • Coronavirus disease 2019 poses an occupational health risk to health-care workers. Several thousand health-care workers have already been infected, mainly in China. Preventing intra-hospital transmission of the communicable disease is therefore a priority. Based on the Systems Engineering Initiative for Patient Safety model, the strategies and measures to protect health-care workers in an acute tertiary hospital are described along the domains of work task, technologies and tools, work environmental factors, and organizational conditions. The principle of zero occupational infection remains an achievable goal that all health-care systems need to strive for in the face of a potential pandemic.