DSRC Performance Analysis in Foggy Environment for Intelligent Vehicles System

Advanced Driver Assistance System (ADAS) is one of the fastest growing areas in the Intelligent Transportation Systems (ITS). Research efforts has focused on developing a driver assistant alert system to warn driver in foggy environment. However, there is a lack of which effective V2V/V2I communication technology would be the best to extend and disseminate this information to nearby vehicles. In this paper, we examine the use of Dedicated Short Range Communications (DSRC) as a V2V communication mechanism to share the foggy conditions to nearby vehicles. The study also investigates the effect of changing the fog/air density on the DSRC performance in intelligent vehicles system. Simulation experiments are setup to study the influence of the fog density on the DSRC performance in communicating the road‟s foggy conditions to nearby vehicles via DSRC communications. The research findings proved that the DSRC performance can persist through fog/air density changes, which helps to confirm that it can help making up for lost human visibility and driver safety experience has been improved on roads during foggy times. This finding aims to promote safe highway operations in foggy or smoky conditions

DSCR Based Sensor-Pooling Protocol for Connected Vehicles in Future Smart Cities

Smart cities are racing to create a more connected Intelligent Transportation Systems (ITS) that rely on collecting data from every possible sensor such as a smart utility meter or a smart parking meter. The use of more sensors resulted in generating a lot of information that maps the smart city environment conditions to more real time data points that needed to be shared and analyzed among smart city nodes. One possibility, to carry and share the collected data, is in autonomous vehicles systems, which use the Dedicated Short Range Communications (DSRC) technology. For example, in a Car-to-Parking-Meter or a Vehicle-to-Vehicle (V2V) communications, short-range embedded sensors such as Bluetooth, Cameras, Lidar send the collected data to the vehicle’s Electronic Control Unit (ECU) or to a road side gateway for making collaborative decisions and react to the environment’s surrounding conditions. The goal of this research is to develop and test a DSRC based sensor-pooling protocol for vehicles to cooperatively communicate inclement weather or environment conditions. Five simulation experiments are setup using PreScan and Simulink to validate and study the scalability of the proposed solution. PreScan is an automotive simulation platform that is used for developing and testing Advanced Driver Assistance System (ADAS). The research findings proved that the DSRC can be used to effectively stream the short range sensors’ collected data over a long distance communications link

DSRC Performance Analysis in Foggy Environment for Intelligent Vehicles System

Advanced Driver Assistance System (ADAS) is one of the fastest growing areas in the Intelligent Transportation Systems (ITS). Research efforts has focused on developing a driver assistant alert system to warn driver in foggy environment. However, there is a lack of which effective V2V/V2I communication technology would be the best to extend and disseminate this information to nearby vehicles. In this paper, we examine the use of Dedicated Short Range Communications (DSRC) as a V2V communication mechanism to share the foggy conditions to nearby vehicles. The study also investigates the effect of changing the fog/air density on the DSRC performance in intelligent vehicles system. Simulation experiments are setup to study the influence of the fog density on the DSRC performance in communicating the road?s foggy conditions to nearby vehicles via DSRC communications. The research findings proved that the DSRC performance can persist through fog/air density changes, which helps to confirm that it can help making up for lost human visibility and driver safety experience has been improved on roads during foggy times. This finding aims to promote safe highway operations in foggy or smoky conditions

Transformation to electronic purchasing: an empirical investigation

The main objective of this study is to determine the factors influence consumers in Oman to switch from in-store to electronic purchasing. Therefore, four constructs (perceived ease of use (PEU), perceived usefulness (PU), facilitating conditions (FC), and social influence (SI)) have been employed in this study which are adopted through the integration between UTUAT and TAM models. The respondent in this study were students from Sultan Qaboos University and Dhofar University, 537 cases have been analysed. Exploratory, confirmatory, and structural equation modelling techniques have been employed in this research using SPSS 25, AMOS 25 software.The study revealed that (PU), (FC), and (SI) have a positive and significant influence on the consumers’ behavioural intention in Oman to switch into electronic purchasing. While, the findings demonstrated that there is no significant effect by (PEU) on the consumers’ behavioural intention to transform from traditional to electronic purchasing.The study provides business and consumers, a good interpretation about the factors influence the transformation to e-purchasing. In addition, this paper encourages companies to shift to interaction e-purchasing portals which help businesses to target different marketplace inside and outside of country to increase sell ratio to sustain their business. However, up to the researchers’ knowledge this study considered to be among the first studies which provide another clearer view of e-purchasing in Oman by incorporating selected factors from two different theories. i.e. incorporating two factors related to the use of technology with other two variables about the required technical resources, and the social effect on individuals to use new technology, thereby being unique and original

A Lightweight Message Authentication Framework in the Intelligent Vehicles System

Intelligent Vehicles System (IVS) supports a wide variety of Advanced Driver Assistance System (ADAS) services such as vehicle visibility detection. In implementing this service, the message authentication is a vital design parameter that protects victim vehicles from being tricked into accepting false messages as legitimate ones and make a false decision based on the incoming message. However, implementing message authentication service is too expensive especially if vehicles, initially, don’t trust each others or there is no certificate of authority in place. In this research, we investigate the use of the Basic Safety Message (BSM) behavior over time as a metric to allow a receiving vehicle to anticipate at what distance it will continue to receive BSMs from within-range vehicles. Therefore, the victim vehicle would reject the BSM messages that fall outside its acceptance window. Simulation experiments are setup to study the realistic behavior of the BSM messages in different environment characteristics including changing the vehicle size, number of road lanes and vehicle speed. Research findings suggested that the lightweight message authentication can assist vehicles in estimating the duration for a trusted relationship among those that are located within range of each others

認知機能障害を伴うラット慢性脳虚血モデルの開発

Tohoku University冨永　悌二課

Design, synthesis and potential anti-proliferative activity of some novel 4-aminoquinoline derivatives

Novel nineteen compounds based on a 4-aminoquinoline scaffold were designed and synthesized as potential anti-proliferative agents. The new compounds were N-substituted at the 4-position by aryl or heteroaryl 1-9, quinolin-3-yl 10, 2-methylquinolin-3-yl 11, thiazol-2-yl 12, and dapsone moieties 13, 14 and 18. Bis-compounds 15, 16 and 19 were also synthesized to assess their biological activity. All the newly synthesized comounds were tested for in vitro antiproliferative activity against the MCF-7 breast cancer cell line. Seventeen of the novel compounds showed higher activity than the reference drug doxorubicin. The corresponding 7-(trifluoromethyl)-N-(3,4,5-trimethoxyphenyl)quinolin-4-amine 1, N-(7-(trifluoromethyl)quinolin-4-yl)quinolin-3-amine (10), 2-methyl-N-(7-trifluorome-thyl)quinolin-4-yl)quinolin-3-amine (11) and N-(4-(4-aminophenylsulf-onyl)phenyl)-7-chloroquinolin-4-amine (13) were almost twice to thrice as potent as doxorubicin

Novel thiophene derivatives with sulfonamide, isoxazole, benzothiazole, quinoline and anthracene moieties as potential anticancer agents

A novel series of thiophenes having biologically active sulfonamide (2-11), 3-methylisoxazole (12), 4-methoxybenzo[d]thiazole (13), quinoline (14, 15), benzoylphenylamino (16) and anthracene-9,10-dione (17) moieties were prepared. Structures of the newly synthesized compounds were established by elemental analysis and spectral data. All newly synthesized compounds were evaluated for their in vitro anticancer activity against human breast cancer cell line (MCF7). Most of the screened compounds showed cytotoxic activities compared to doxorubicin as a positive control. Compounds 6, 7, 9 and 13 (IC50 values 10.25, 9.70, 9.55 and 9.39 µmol L–1 revealed higher cytotoxic activities than that of doxorubicin (IC50 = 32.00 µmol L). Also, compounds 5, 8 and 10 were found nearly as active as doxorubicin (IC50 values 28.85, 23.48 and 27.51 µmol L–1)

In-vitro cytotoxic and radiosensitizing evaluation of novel 2-pyridone, isoquinoline, chromene and chromenopyridone derivatives

On the account of the reported anticancer activity of 2-pyridone, a new series of ethyl-1,6-dihydropyridine-3-carboxylate (4a-j), 1-oxo-1,2-dihydroisoquinoline-7-carbonitrile (6a-h), 2H-chromene (7,8) and 3H-chromeno[3,4-c]pyridone derivatives (9,10) were synthesized and tested for in-vitro anticancer activity against Ehrlich Ascites Carcinoma (EAC) cell line and human liver cell line (HEPG2). The structures of the synthesized compounds were confirmed by analytical and spectral data. Furthermore, radiosensitization study was performed for the most potent compounds (4a, 4d, 6a, 6c, 6e and 10)