The research trend of open government data utilization: A systematic review

The open government data (OGD) movement has stimulated the opening and sharing of government data significantly. Data use, reuse and distribution, as well as value creation, is the next vital step in the global OGD movement. Summarizing current research progress of OGD utilization would lay a foundation for follow-up research and provide theoretical support for future practice. This poster conducted a systematic review on OGD utilization research mainly based on research articles, while other document types (e.g., important scientific reports) were also considered to demonstrate a more holistic scenario. The research trends of OGD utilization were summarized and future research directions were proposed based on research results. This poster revealed three research tendencies in OGD utilization studies. First, previous OGD utilization study was driven by the supply side, while current study tends to motivated by the demand side. Second, previous OGD utilization study was normally conducted from a macro viewpoint, while fine-grained research is more preferred currently. Third, previous research paid more attention on data usage by government departments, while data usage by the public attracts an increasing amount of attention currently. Several research topics are worth researching in the further, i.e the value of OGD utilization, diverse contexts for OGD utilization and solid support measures for OGD utilization

Channel characterization for 1D molecular communication with two absorbing receivers

This letter develops a one-dimensional (1D) diffusion-based molecular communication system to analyze channel responses between a single transmitter (TX) and two fully-absorbing receivers (RXs). Incorporating molecular degradation in the environment, rigorous analytical formulas for i) the fraction of molecules absorbed, ii) the corresponding hitting rate, and iii) the asymptotic fraction of absorbed molecules as time approaches infinity at each RX are derived when an impulse of molecules are released at the TX. By using particle-based simulations, the derived analytical expressions are validated. Simulations also present the distance ranges of two RXs that do not impact molecular absorption of each other, and demonstrate that the mutual influence of two active RXs reduces with the increase in the degradation rate

Parameter Estimation in a Noisy 1D Environment via Two Absorbing Receivers

This paper investigates the estimation of different parameters, e.g., propagation distance and flow velocity, by utilizing two fully-absorbing receivers (RXs) in a one-dimensional (1D) environment. The time-varying number of absorbed molecules at each RX and the number of absorbed molecules in a time interval as time approaches infinity are derived. Noisy molecules in this environment, that are released by sources in addition to the transmitter, are also considered. A novel estimation method, namely difference estimation (DE), is proposed to eliminate the effect of noise by using the difference of received signals at the two RXs. For DE, the Cramer-Rao lower bound (CRLB) on the variance of estimation is derived. Independent maximum likelihood estimation is also considered at each RX as a benchmark to show the performance advantage of DE. Aided by particle-based simulation, the derived analytical results are verified. Furthermore, numerical results show that DE attains the CRLB and is less sensitive to the change of noise than independent estimation at each RX.Comment: 7 pages, 5 figures, accepted by Globecom 202

How policy tools utilized in open data policies in China

The aim of this poster is to investigate which policy tools are used in open data policies in China. 98 Chinese national open data policy documents were investigated in this research. We found that Chinese open data policies em- phasized on the use of environmental and supply-oriented policy tools, with par- ticular attention to information support, regulations and standards. However, the use of demand-side policy tools was insufficient, and the combination of policy tools remained to be optimized. This poster provides suggestions for the improve- ment of open data policies in the future