报告包括电子商务方面的重要观点、政策与环境、网购平台、行业应用、电商物流、电商金融等研究。

报告包括电子商务方面的重要观点、政策与环境、网购平台、行业应用、电商物流、电商金融等研究。

报告从行业事件分析、政策环境、市场环境、旅游交通、国际环境等相关行业数据方面进行了分析评论。

报告从行业事件分析、政策环境、市场环境、旅游交通、国际环境等相关行业数据方面进行了分析评论。

报告包括电子商务方面的重要观点、政策与环境、网购平台、行业应用、电商物流、电商金融等研究。

Security checks for cargo shipments are traditionally carried out through physical inspections or by using canines (threat detection dogs). However, along with an increase in global air cargo traffic, there is a growing need for effective air cargo security and screening systems. Adoption of sophisticated air cargo screening technologies has increased. These technologies are effective in screening large volumes of cargo. Also, advanced air cargo screening systems provide enhanced threat detection capabilities. Key screening systems currently used include X-ray, explosives trace detectors (ETD), and explosive detection systems (EDS) technologies.

Li-ion batteries are mainly used in devices such as laptops, smart phones, notebooks, and tablets, owing to their high energy density and rechargeable properties. The newage battery is also finding increasing use in EVs, especially in tandem with the growing popularity of BEVs and PHEVs. Li-ion batteries consist of one or more energy generating compartments called cells. Each cell has three components: a positive electrode (cathode), a negative electrode (anode), and an electrolyte between the two electrodes.

Mechanics of a functionally graded cylinder subject to static or dynamic axial loading is considered, including a potential application as energy absorber. The mass density and stiffness are power functions of the radial coordinate as may be the case with variable-density open-cell or closed-cell foams. Exact solutions are obtained in the static problem and in the case where the applied load is a periodic function of time. The absorption of energy is analyzed in the static problem that is reduced to an easily implementable nondimensional formulation. It is demonstrated that by using foams with a variable in the radial direction mass density it is possible to achieve higher energy absorption while at the same time saving weight.

The communities of Hartford, Connecticut, and Syracuse, New York, implemented year-long campaigns to test whether NHTSAs high-visibility enforcement (HVE) model could be applied to reduce two specific forms of distracted driving driving while talking on a hand-held cell phone or texting. The HVE model applies strong laws, vigorous targeted law enforcement, extensive media that emphasizes the enforcement, and evaluation. Both sites conducted 4 waves of enforcement between April 2010 and April 2011. NHTSA developed and bought TV and radio spots featuring the tag line Phone in One Hand, Ticket in the Other. Both sites generated ample earned media. Police wrote 100 to 200 citations per 10,000 population for each wave in each site. Driver surveys showed an increase in awareness that cell phone laws were being enforced and recognition of the new slogan. Observed hand-held driver cell phone use dropped from 6.6% to 2.9% in Hartford, and from 3.7% to 2.5% in Syracuse. Connecticuts control area also showed a decrease in use (from 6.6% to 5.6%) but not to the same extent as Hartford. New Yorks control area had similar decreases (5% to 3%), perhaps a result of separate enforcement campaigns running simultaneously in the control site. The results show that high-visibility enforcement campaigns can reduce the number of people who use hand-held cell phones while driving.

PEVs can represent a significant power resource for the grid. An IVCI with bi-direction V2G capabilities would allow PEVs to provide grid support services and thus generate a source of revenue for PEV owners. The fleet of EV Project vehicles represents a power resource between 30 MW and 90 MW, depending on the power rating of the grid connection (5-15 kW). Aggregation of vehicle capacity would allow PEVs to participate in wholesale reserve capacity markets. One of the key insights from EV Project data is the fact that vehicles are connected to an EVSE much longer than is necessary to deliver a full charge. During these hours when the vehicles are not charging, they can be participating in wholesale power markets providing the high-value services of regulation and spinning reserves. The annual gross revenue potential for providing these services using the fleet of EV Project vehicles is several hundred thousands of dollars to several million dollars annually depending on the power rating of the grid interface, the number of hours providing grid services, and the market being served. On a per vehicle basis, providing grid services can generate several thousands of dollars over the life of the vehicle.