cis-Dichloridobis(2-phenyl­pyridine-κN)platinum(II)

In the title complex, cis-[PtCl2(C11H9N)2], the PtII ion is situated in a slightly distorted square-planar environment coordinated by two N atoms from two 2-phenyl­pyridine ligands and two Cl atoms. The two pyridyl planes are inclined with dihedral angles of 59.1 (2) and 61.84 (19)° with respect to the PtCl2N2 plane. In the crystal, the complex mol­ecules display inter- and intra­molecular π–π stacking inter­actions, with centroid-centroid distances of 3.806 (5)–3.845 (5) Å, which form a one-dimensional column structure along the a axis

A Method for Pedestrian Position Estimation using Inter-Vehicle Communication

GLOBECOM2008 : IEEE Global Communications Conference , Nov 30-Dec 4, 2008 , New Orleans, LA, USAIn this paper, we propose a method for detecting the positions of pedestrians by cooperation of multiple cars with directional antennas to support drivers for pedestrian safety. In the method, each pedestrian carries a device which periodically transmits a beacon with a unique ID, and each car passing near the pedestrian receives the beacon by a directional antenna and measures the distance and the angle of arrival. We assume the distribution of the measurement errors to be a normal distribution, and the system calculates the existence probabilities of each pedestrian at each point. By exchanging information of the probabilities between cars, the area with high existence probability is narrowed down. In this paper, we first describe the situations where detecting positions of pedestrians greatly contribute to pedestrian safety, and then we describe the probability model used in our method, the method for calculating existence probabilities from information from multiple cars, and the protocol for exchanging the probability information between cars. We evaluated our method on QualNet simulator, and confirmed that the positions can be detected accurately enough for practical uses

A Method for Improving Data Delivery Efficiency in Delay Tolerant VANET with Scheduled Routes of Cars

IVCS 2010 : 2nd IEEE International Intelligent Vehicular Communications System Workshop , Jan 9-12, 2010 , Las Vegas , NV, USAIn vehicular ad hoc networks (VANETs), delivering messages to a specific location is difficult due to the high mobility of vehicles. In this paper, we propose a method for efficient message delivery in VANETs utilizing the route information in car navigation systems. In the proposed method, each car periodically exchanges the information on its current position and scheduled route in the car navigation system with neighboring cars within radio range. By referring to the exchanged information, each car forwards messages to the neighboring car that will most closely approach the destination. Through simulations, we confirm that the proposed method achieves a better delivery rate with low bandwidth usage than a geocast-based method and epidemic routing

A Method for Sharing Traffic Jam Information using Inter-Vehicle Communication

V2VCOM2006 : Vehicle-to-Vehicle Communications , Jul 17-21, 2006 , San Jose, CA, USAIn this paper, we propose a method for cars to autonomously and cooperatively collect traffic jam statistics to estimate arrival time to destination for each car using inter-vehicle communication. In the method, the target geographical region is divided into areas, and each car measures time to pass through each area. Traffic information is collected by exchanging information between cars using inter-vehicle communication. In order to improve accuracy of estimation, we introduce several mechanisms to avoid same data to be repeatedly counted. Since wireless bandwidth usable for exchanging statistics information is limited, the proposed method includes a mechanism to categorize data, and send important data prior to other data. In order to evaluate effectiveness of the proposed method, we implemented the method on a traffic simulator NETSTREAM developed by Toyota Central R&D Labs, conducted some experiments and confirmed that the method achieves practical performance in sharing traffic jam information using inter-vehicle communication

NOD1-Mediated Mucosal Host Defense against Helicobacter pylori

Infection of the stomach with Helicobacter pylori is an important risk factor for gastritis, peptic ulcer, and gastric carcinoma. Although it has been well established that persistent colonization by H. pylori is associated with adaptive Th1 responses, the innate immune responses leading to these Th1 responses are poorly defined. Recent studies have shown that the activation of nucleotide-binding oligomerization domain 1 (NOD1) in gastric epithelial cells plays an important role in innate immune responses against H. pylori. The detection of H. pylori-derived ligands by cytosolic NOD1 induces several host defense factors, including antimicrobial peptides, cytokines, and chemokines. In this paper, we review the molecular mechanisms by which NOD1 contributes to mucosal host defense against H. pylori infection of the stomach

A Technique for Information Sharing using Inter-Vehicle Communication with Message Ferrying

MDM'06 : 7th International Conference on Mobile Data Management , May 9-12, 2006 , Nara, JapanIn this paper, we propose a method to realize traffic information sharing among cars using inter-vehicle communication. When traffic information on a target area is retained by ordinary cars near the area, the information may be lost when the density of cars becomes low. In our method, we use the message ferrying technique together with the neighboring broadcast to mitigate this problem. We use buses which travel through regular routes as ferries. We let buses maintain the traffic information statistics in each area received from its neighboring cars. We implemented the proposed system, and conducted performance evaluation using traffic simulator NETSTREAM. As a result, we have confirmed that the proposed method can achieve better performance than using only neighboring broadcast

[μ-1,2-Bis(diphenyl­phosphan­yl)benzene-κ2 P:P′]bis­[chloridogold(I)]

In the crystal structure of the non-solvate form of the title compound, [Au2Cl2(C30H24P2)], two almost linear P—AuI—Cl units [175.87 (3) and 171.48 (3)°] are in a skewed arrangement with a Cl—Au⋯Au—Cl torsion angle of −65.29 (3)° so as to form an intra­molecular Au⋯Au inter­action [3.0563 (2) Å]. The complex mol­ecules are connected each other through inter­molecular C—H⋯π inter­actions, giving a sheet structure parallel to the bc plane

UbiREAL: Realistic Smartspace Simulator for Systematic Testing

UbiComp 2006 : 8th International Conference on Ubiquitous Computing , Sep 17-21, 2006 , Orange County, CA, USAIn this paper, we propose a simulator for facilitating reliable and inexpensive development of ubiquitous applications where each application software controls a lot of information appliances based on the state of external environment, user’s contexts and preferences. The proposed simulator realistically reproduces behavior of application software on virtual devices in a virtual 3D space. For this purpose, the simulator provides functions to facilitate deployment of virtual devices in a 3D space, simulates communication among the devices from MAC level to application level, and reproduces the change of physical quantities (e.g., temperature) caused by devices (e.g., air conditioners). Also, we keep software portability between virtual devices and real devices. As the most prominent function of the simulator, we provide a systematic and visual testing method for testing whether a given application software satisfies specified requirements

高齢者健常人および気管支喘息患者におけるカンジダ特異的IgGおよびIgG(4)抗体について

Specific IgG and IgG(4) antibodies against Canadida albicans were exmined in 48 healthy and 69 asthmatic subjects to analyze the mechanism causing an increased production of these immunoglobulins. 1. The level of C.albicans-specific IgG and IgG(4) antibodies was higher, not significantly in IgG(4), in asthmatics under 30 years of age, compared with healthy subjects of the same age group. 2. Specific IgG and IgG(4) antibody levels in both healthy and asthmatic subjects showed a tendency to increase with aging, and significant difference was present between cases under 30 years and cases over 70 years of age. 3. Any difference in the production of specific IgG and IgG(4) was not observed in elderly cases older than 60 years between healthy and asthmatic subjects.高齢者(61才以上)の健常人48名および気管支喘息患者69例を対象に,カンジダ特異的IgGおよびIgG(4)抗体を測定し,その増加の機序について若干の検討を加えた｡なお,対照としては,30才以下の健常者および気管支喘息患者を選んだ。1.カンジダ特異的IgGおよびIgG(4)抗体価は,30才以下では,健常人に比べ気管支喘息症例で高い傾向が見られ,特異的IgG抗体では両者間に有意の差が見られた(p<0.05)。2.カンジダ特異的IgGおよびIgG(4)抗体は,健常人および気管支喘息症例いずれも加齢とともに増加する傾向が見られ,71才では,30才以下の症例に比べ有意に高い抗体価を示した｡3.61才以上の高齢者では,特異的IgG,IgG(4)抗体いずれにおいても,健常人と気管支喘息患者との間に有意の差は見られなかった