The promotion of domestic consumption in China will gradually ramp up the small and medium-sized port container industry, this require greater efficiency an updated development strategy. aim paper is to evaluate operational productivity change 21 coastal medium sized-port terminals China. first step was carried out using data envelopment analysis (DEA) Malmquist index (MPI), factors affecting were then estimated quantified Tobit regression. empirical results indicate that most efficient are...

Although investigators are using data sources to describe the visual characteristics of streets, few researchers have linked human perceptions street environment with activity density. This study proposes a conceptualized analytical framework that explains relationship between density and streetscape. The image-segmentation model DeepLabv3+ automatically extracts each pixel’s semantic information classifies elements from 120,012 collected panoramic view images Zhengzhou, China, entropy...

Urban and regional research is crucial for many applications such as public participation, land use, disaster management, environmental monitoring, but it a time-consuming expensive procedure to collect necessary data. Remote sensing an effective technology urban observation, however, the spatial, spectral, temporal resolution of observation sensors limits situations in which remote data cannot be fully utilized, especially field observation. Recently, with popularity internet smart mobile...

Currently, high-income countries use multimodal transportation to export large quantities of secondhand vehicles low-income countries. Secondhand vehicle has shown its highest growth in recent years, especially Korea. The problem transporting from Korea Central Asia is becoming an important issue, but few researchers are interested it. objective this research determine the optimal transport network for exporting Asian by combining experts' opinions and real data existing networks. fuzzy...

This study aimed to demonstrate and quantify the factors that influence ship safety accidents suggest policy recommendations for both government marine industry in Korea based on application of system dynamics (SD). was selected as target country because a number recent have focused attention region. Three can were considered: economic factors, ship-handling management budget allocation industry. SD then applied model involved accidents. Data from 2009–2014 included simulation. To measure...

Location-based mobile applications such as Foursquare and Jiepang help bridge the gap between offline online. People that we encounter connect with around physical resources conferences, provide opportunities for extending our social networks from to We give a preliminary study on relationship online in terms of interactions (O2O) established during conference, using proximity-based platform called Find & Connect. propose metrics overlap fraction, network scale, O2O transfer amount quantify...

The problem of determining the required ship investment for deployment is an ongoing faced by governments and operators. nature capital-intensive return on often take long time. This paper attempts to establish system dynamics modeling (SDM) simulate solve this in order help operators make effective strategic decisions. A case study coastal liner services between Incheon Baengnyeong Island South Korea was performed. Using scenario analysis, possible sizes (small: 350 tons; large: 2,500 tons)...

The forecasting of container volumes is a critical component in both the nation's economy and development ports. This paper attempts to generate model for at ports using system dynamics provide higher accuracy. First, regression are employed forecast volume Taiwan, average error shows that has ability. Second, data period 1990-2008 Taiwan Korea used 2016. total come from import/export transshipment volume. input divided into two sets-total import/export-according properties port or nation....

Reasonable selection of passenger flow routes consideringdifferent transportation organization modes can meetthe demands adapting to large-scale high-speed railwaynetworks and improving network efficiency. Passenger flowrouting models are developed find optimize a setof for railway considering different modes. In this paper, we presented new approach minimizing the operating costs, including traveling cost, cost travel time differences between lines, penalties inter-line. The was...

Existing passenger car equivalent (PCE) values do not necessarily serve the purposes of highway cost allocation well, since their derivation has followed from a need to determine equivalency for traffic operations purposes. Highway demands better knowledge equivalencies among vehicle classes, wide range types, and under full conditions. There are several possible methods PCE development various suggested values, but there is currently no information on suitability these estimates A framework...

Wi-Fi log data can be used as an alternative to Bluetooth and other protocols detect possible exposure infected person without requiring installation of specialized apps or changes infrastructure. This paper summarizes examination five increasingly complex approaches predict individuals' locations indoors consequently infections: (N1) Common access point; (N2) In the building at same time; (PI) Location predicted from coverage; (P2) coverage previous location; (P3) Movement floorplan graph....

This paper proposes an efficient origin-estimation bandwidth (OD band) model, which provides dedicated progression bands for arterial traffic based on the real-time dynamic matrix of their estimated OD pairs. The innovations band model are as follows: First, dynamics through and turning-in/out traffics analyzed pairs, used to generate movement sequence at continuous intersections; Second, end-time green interval lag-lag phase intersections is determined according relevant constraints,...

In medical cohort studies, the frequent movement of population leads to incomplete data, which greatly interferes with research results. This article refers such problems as search for missing people (SMP) problem. Based on idea social network information propagation, we propose a propagation contribution-driven mechanism (MPSM). MPSM exploits networks gather from users and then dynamically evaluates ability help find Using two most complete widely used data sets Facebook Twitter, method was...