• 대한지역사회영양학회지
• /
• 제25권3호
• /
• pp.236-245
• /
• 2020

Objectives: Cardiovascular disease is a major cause of death in the elderly in Korea. Increased arterial stiffness is linked to risk of cardiovascular disease and mortality. The purpose of this study was to investigate the relationship between arterial stiffness and physical activity in the elderly. Methods: A total of 209 older adults (110 men and 99 women) participated in this study. Arterial stiffness of subjects such as brachial-ankle pulse wave velocity (baPWV) and ankle brachial pressure index (ABI) was measured using a non-invasive vascular screening device (VP-1000 Plus, Omron, Kyoto, Japan). The interviewed Korean version of the international physical activity questionnaire short form (IPAQ-SF) was used to evaluate subject's physical activity level and classify subjects as active or inactive group based on the time spent doing moderate to vigorous physical activity (MVPA). Results: The mean age of total subjects was 75.3 ± 5.6 years. There was no significant difference in sex distribution between the active group (39.7%) and inactive group (60.3%). The baPWV (1,758.1 ± 375.2 cm/sec) of the active group was significantly lower than that (1,969.7 ± 372.3 cm/sec) of the inactive group (P < 0.05). There was a significant inverse association between time spent in MVPA and baPWV (r = -0.245, P < 0.01). Conclusions: This study suggests that physical activity programs for older adults are needed to prevent arteriosclerosis.

• 유통과학연구
• /
• 제20권4호
• /
• pp.101-110
• /
• 2022

Purpose: This study is a comparative study to examine the differences between Incoterms 2010 and Incoterms 2010 through a study on the revision contents and conditions of Incoterms 2020. Research design, data, methodology: This study is composed of 5 chapters through literature study. Chapter 1 is an introduction, and Chapter 2 explains the significance and change of standard trading conditions. Chapter 3 compares Incoterms 2020 and 2010. Chapter 4 deals with major revisions and considerations of Incoterms 2020, and Chapter 5 mentions conclusions and implications. Results: In comparison with Incoterms 2020 and Incoterms 2010, first, the selection of the correct Incoterms rules was emphasized through the introduction; second, the division and connection between the sale contract and the ancillary contract were more clearly explained; and third, each Incoterms An explanatory note was presented by improving the existing guidance note for rules, and finally, the order of clauses within individual Incoterms rules was changed to further emphasize delivery and risk. Conclusions: This study pays attention to the understanding of academic content related to standard trade terms and conditions and how usefully it can be used in the business process of users in practice.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2007년도 Proceedings of ISRS 2007
• /
• pp.397-400
• /
• 2007

For mapping the distribution of heavy metals in the mining area, field spectroscopy and hyperspectral remote sensing were used in this study. Although heavy metals are spectrally featureless from the visible to the short wave infrared range, possible variations in spectral signal due to heavy metals bound onto minerals can be explained with the metal binding reaction onto the mineral surface. Variations in the spectral absorption shapes of lattice OH and oxygen on the mineral surface due to the combination of heavy metals were surveyed over the range from 420 to 2400 nm. Spectral parameters such as peak ratio and peak area were derived and statistically linked to metal concentration levels in the streambed samples collected from the dry stream channels. The spatial relationships between spectral parameters and concentrations of heavy metals were yielded as well. Based on the observation at a ground level for the relationship between spectral signal and metal concentration levels, the spectral parameters were classified in a hyperspectral image and the spatial distribution patterns of classified pixels were compared with the product of analysis at the ground level. The degree of similarity between ground dataset and image dataset was statistically validated. These techniques are expected to support assessment of dispersion of heavy metal contamination and decision on optimal sampling point.

• International Journal of Fluid Machinery and Systems
• /
• 제3권4호
• /
• pp.285-291
• /
• 2010

To provide required flow rates of cooling or circulating water properly, approach flow conditions of vertical pump systems should be in compliance with state of the art acceptance criteria. The direct inflow should be vortex free, with low pre-rotation and symmetric velocity distribution. Physical model investigations are common practice and the best tool of prediction to evaluate, to optimize and to document flow conditions inside intake structures for vertical pumping systems. Optimization steps should be accomplished with respect to installation costs and complexity on site. The report shows evaluation of various approach flow conditions inside a compact waste water pumping station. The focus is on the occurrence of free surface vortices and the evaluation of air entrainment for various water level and flow rates. The presentation of the results includes the description of the investigated intake structure, occurring flow problems and final recommendations.

• The Journal of Asian Finance, Economics and Business
• /
• 제8권9호
• /
• pp.91-100
• /
• 2021

Educational institutions play a critical role in national development through the advancement of skilled human resources and intellectual society. The number of higher educational institutions (HEIs) is increasing significantly in Bangladesh. Students have a number of options from which to select their preferred educational institutions. Hence, HEIs should think about the quality of services they provide to students. The objective of this study is to measure students' satisfaction and university reputation through service quality (SQ) in a private higher educational institution (PriHEI) in Bangladesh. Primary data was collected from 270 students of International Islamic University Chittagong (IIUC), Bangladesh, through a simple random sampling technique. In this study, data was analyzed through descriptive statistics, correlation, measurement model using confirmatory factor analyses, and structural equation modeling (SEM). The results showed that transport services have indirect but medical and physical facilities have both direct and indirect significant effects on overall students' satisfaction. Further, the administrative services and research facilities have significant indirect effects on overall students' satisfaction. Finally, the results of structural equation modeling (SEM) confirm that the reputation of the university is directly associated with overall students' satisfaction.

• Journal of Communications and Networks
• /
• 제17권6호
• /
• pp.558-567
• /
• 2015

In recent years, we have seen a proliferation of mobile-network-enabled smart objects, such as smart-phones and smart-watches, that form a cyber-physical integrated network to connect the cyber and physical worlds through the capabilities of sensing, communicating, and computing. Discovery of the relationship between smart objects is a critical and nontrivial task in cyber-physical integrated network applications. Aiming to find the most stable relationship in the heterogeneous and dynamic cyber-physical network, we propose a distributed and efficient relationship-discovery algorithm, called dynamically maximizing remaining unchanged time with minimum connected dominant set (DMRUT-MCDS) for constructing a backbone with the smallest scale infrastructure. In our proposed algorithm, the impact of the duration of the relationship is considered in order to balance the size and sustain time of the infrastructure. The performance of our algorithm is studied through extensive simulations and the results show that DMRUT-MCDS performs well in different distribution networks.

• The Journal of Asian Finance, Economics and Business
• /
• 제8권12호
• /
• pp.85-94
• /
• 2021

Infrastructure capacities are essential elements and one of the sustainable lines to drive economic growth. Infrastructure development, both physical and social, is vital to sector-wise economic development. However, there is limited evidence of how infrastructure development in certain sectors benefits the economy as a whole. This study explains the relationships between infrastructure and economic growth in selected middle-income Asian countries, highlighting the essential criteria to benefit from both physical and social infrastructure, as well as sectoral (agriculture, industry, and services) economic output. The research uses the data from 1990 to 2020 for empirical estimations. The study used Levin, Lin, & Chu test, ADF- Fischer chi- Square, and PP- Fischer Chi-Square to test unit root and to observe the stationary nature of the panel. Padroni and Kao cointegration is applied to check the cointegration among different panes. A Fully Modified OLS was employed for checking the association between physical and social infrastructure and economic growth. Results show that physical and social infrastructure negatively impact sectoral output in Asia's middle-income countries. Apart from infrastructure the per capita GDP growth, tax to GDP ratio, and population growth shows a simultaneous relation between infrastructure and sectoral economic growth.

• 한국포장학회지
• /
• 제12권1호
• /
• pp.1-5
• /
• 2006

Increasement of total cost during distribution chain requires packaging standardization to reduce extra handling and delays at transshipment point. In Korea, high valued agricultural products to export are most often shipped by air freight. Fresh flowers, in particular, the need to set package standard for air palletization are strongly recommended. This study tried to find an optimum standard dimensions for export packages. After extensive research on combinations of various flower dimensions, package dimensions and pallet sizes, we found that 96 inches pallet was most adequate for international air freight. Based on the results, new 40 standard package dimensions were introduced and stacking efficiencies were calculated.

• 국제초고층학회논문집
• /
• 제5권2호
• /
• pp.95-103
• /
• 2016

One of the key problems in the design of high-rise commercial complex is how to guide reasonable pedestrian distribution in commercial space. In this study, pedestrian distribution in three high-rise commercial complexes in Shanghai and Hong Kong was studied using spatial configuration analysis software Space Syntax and quantification of physical elements in commercial spaces, such as functional attractiveness, entrances, escalators, level variations and passage width. Additionally, in an attempt to integrate functions with spatial integration and spatial depth, two combination variables, the spatial coefficient of function (IF) and spatial depth coefficient of function (F/D), were proposed. The results of the correlation analysis and multiple regression analyses reflected the following: (1) Regarding the influence on pedestrian distribution, there was a synergistic and complementary relationship between function and space; (2) The comprehensive flow distribution analytic model could successfully interpret flow distribution in high-rise commercial complexes and its R Square ranged up to about 70% in the three cases; (3) The spatial coefficient of function (IF) and spatial depth coefficient (F/D) could effectively integrate functions and spatial configuration, which could help close the gap between over-emphasis on function in commercial research and the lack of consideration of function in space-syntax analysis.

• 한국지형학회지
• /
• 제23권3호
• /
• pp.105-122
• /
• 2016

To evaluate the changes in the physical characteristics of open rainfall related to canopy effects and rainfall intensity in Korea, the terminal velocity of raindrops and drop size distributions(DSD) were continuously measured by an optical-laser disdrometer in an open site(Op) and in two forest stands(Th1: Larix leptolepis, Th2: Pinus koraiensis) during five rainfall events in 2008. The terminal velocity, DSD and two forms of kinetic energy(KE, $Jm^{-2}$ $mm^{-1}$; KER, $Jm^{-2}$ $h^{-1}$) of open rainfall drops were determined and were compared with those of throughfall drops under two different canopy heights. The effects of the canopy and rainfall intensity, together with wind speed, on the changes in drop size and kinetic energy of throughfall were evaluated. Throughfall drops were larger than open rainfall drops. The distribution of terminal velocities for the drop sizes measured at Th2 was lower than that at Op; however, at Th1 the distribution was similar to that at Op. The total kinetic energy of throughfall at Th1 and Th2 was higher than the total kinetic energy of open rainfall, and the kinetic energy distribution for the drop sizes wassimilar to the drop size distribution. The observed throughfall-KER at Th1 was lower than an estimate previously produced using a model. The overestimation from the modeled value at Th1 was likely to be due to overestimated values of a square root transformation of fall height and its coefficient in the model because the distributions of terminal velocity for the drop size measured at Th1 were similar to those of open rainfall.