This paper presents a novel pedestrian detection method based on the use of convolutional neural network (CNN) classifier. Our achieves high accuracy by automatically optimizing feature representation to task and regularizing network. We evaluate proposed difficult database containing pedestrians in city environment with no restrictions pose, action, background lighting conditions. The false positive rate (FPR) CNN classifier is less than 1/5-th FPR support vector machine (SVM) using...

Novel chiral compounds possessing molecular biaxiality, T-shaped and bend-shaped compounds, have been prepared the physical properties investigated. The compound was found to show a blue phase with wide temperature range on cooling. A double twist structure formed by can stabilize phase. Furthermore, induced grain boundary in binary mixture its corresponding monomeric compound.

Liquid-crystalline blue phases have attracted a considerable amount of attention because their hierarchical phase structures with optical isotropy and application to electro-optical devices. The driving forces for the frustrated liquid-crystalline differ from those conventional composed rod-like molecules. Classical molecular design is inapplicable liquid crystals. From perspectives display applications, exhibit some revolutionary features. They obviate surface alignment, provide...

The fast electric-field-induced phase transition from blue III (BPIII) to nematic (N) of a newly designed chiral liquid crystal possessing molecular biaxiality (see figure) is reported. present finding can offer electro-optical switching between well black state the BPIII and homogeneous bright induced N without surface treatment.

We prepared a binaphthyl derivative possessing two 2,3-difluoro-1,4-diphenylbenzene units, and then investigated the phase transition behaviour. On cooling, compound was found to exhibit sequence of iso liq–blue phase–smectic phase. The temperature blue with cubic structure about 30 K. An electric-field-induced observed in heating, exhibited marked separation. Some regions showed cryst–chiral nematic (N*)–blue (BP)–iso liq, whereas others that cryst–iso liq. range coexisting crystal liq...

Supermolecules composed of pre-organized mesogenic units have attracted much attention because they can form secondary and tertiary structures with unique physical properties. This Feature Article reviews recent progress in thermotropic supermolecular liquid-crystalline materials a hierarchical structure. We take the concepts molecular dynamics, electrostatic core–core interactions, hydrocarbon–fluorocarbon amphiphilicity intramolecular chirality transfer, apply them to creation new...

Two series of Aerosol-OT-analogue surfactants (sulfosuccinate-type di-BCnSS and sulfoglutarate-type di-BCnSG) with hyperbranched alkyl double tails (so-called “hedgehog” groups, carbon number n = 6, 9, 12, 18) have been synthesized shown to demonstrate interfacial properties comparable those seen for related fluorocarbon (FC) systems. Critical micelle concentration (CMC), surface tension at the CMC (γCMC), minimum area per molecule (Amin) were obtained from measurements aqueous surfactant...

A homologous series of novel chiral dimeric compounds, (R)-2,2′-bis{6-[4-(2-(2-fluoro-4-butyloxyphenyl)pyrimidine-5-yl)phenyloxy]alkyloxy}-1,1′-binaphthyl, has been prepared and the physical properties investigated. The binaphthyl derivatives with an even number atoms in spacers showed a nematic phase, however, those odd unusual direct blue phase to smectic transition.

[structure: see text] This paper describes the cyclotrimerization reaction of di(2-azulenyl)acetylenes (2a,b) catalyzed by Co2(CO)8 to produce hexa(2-azulenyl)benzene derivatives (1a,b). The cyclooligomerization 2a and 2b utilizing CpCo(CO)2 as a catalyst produced (eta5-cyclopentadienyl)[tetra(2-azulenyl)cyclobutadiene]cobalt complexes (3a,b). redox behavior hexakis(6-octyl-2-azulenyl)benzene (1b), bis(6-octyl-2-azulenyl)acetylene (2b), cobalt 3a 3b along with 6-octyl-2-phenylazulene (19)...

The fluorinated double-tailed glutarate anionic surfactant, sodium 1,5-bis[(1H,1H,2H,2H-perfluorodecyl)oxy]-1,5-dioxopentane-2-sulfonate (8FG(EO)2), was found to stabilize water-in-supercritical CO2 microemulsions with high water-to-surfactant molar ratios (W0). Studies were carried out here obtain detailed information on the phase stability and nanostructure of by using a high-pressure UV−vis dye probe small-angle neutron scattering (SANS) measurements. spectra, methyl orange as reporter...

Tokyo Metro Co., Ltd. (hereinafter, Metro) comprises nine lines operating over 195.1km and 179 stations, is used by 7.07 million passengers per day. operates on the belief that security equals safety plus service. In regard to safety, special effort devoted toward countermeasures for natural disasters. light of recent extreme weather events, heavy rains are particularly important. It was reported in updated expectations flood damage published 2009 metropolitan area's 17 97 stations 147km...

Withheterogeneous sensors offering complementary advantages in perception, there has been a significant growth sensor-fusion based research and development object perception tracking using classical or deep neural networks approaches. However, supervised learning requires massive labeled data-sets, that require expensive manual labor to generate. This paper presents novel approach leverages YOLOv3 highly accurate detection from camera automatically label point cloud data obtained...

A linearized MOSFET-C low-pass filter suitable for a baseband channel selection direct conversion receiver is presented. Using polysilicon resistors instead of MOSFET in the input and output part, achieves very high out-of-band linearity but maintains original transfer function under control continuous on-chip cutoff tuning scheme. In order to enhance triode-mode variable resistors, gates MOSFETs are driven by charge pump loop. Also, an appropriate gain scaling implemented lower referred...

We report the preparation of new ferroelectric liquid crystals, 4-(2-methylalkanoyl)phenyl 4'-alkyloxybiphenyl-4-carboxylates, and measurements their physical properties. The dependence magnitude spontaneous polarization on alkyl chain length is observed. 4-(2-Methyloctanoyl)phenyl 4'-octyloxybiphenyl-4-carboxylate shows extremely large polarization, 293 nC/cm 2 (at 62°C) 403 39°C).

Abstract We investigated the correlation between orientational order and microscopic organization of molecules in smectic A chiral (racemic) C phases by means solid-state C-13 NMR, powder X-ray diffraction, electrooptical measurements. The compounds under investigation are 4-((S)-2-methyloctanoyl)phenyl 4′-nonylbiphenyl-4-carboxylate ((S)-MONBIC) its corresponding racemic compound ((S, R)-MONBIC). Static NMR indicates that: (1) angle tail with respect to magnetic field decreases slightly...

The effects of surfactant mixing on interfacial tension and microemulsion formation were examined for systems air/water water/supercritical CO2 (scCO2) interfaces water/scCO2 microemulsions. A fluorinated surfactant, sodium bis(1H,1H,2H,2H-heptadecafluorodecyl)-2-sulfosuccinate (8FS(EO)2), was mixed with the three hydrocarbon surfactants, Pluronic L31, Tergitol TMN-6, decyltrimethylammonium chloride (DeTAC), at equimolar ratio. For all cases, significantly lowered by mixing. positive...

We prepared a host liquid crystal consisting of practical nematic mixture and small amount newly designed T-shaped compound. The doped with chiral dopant possessing high helical twisting power produces room-temperature amorphous blue phase III (BPIII). An in-plane-switching cell containing the BPIII material exhibited transmittance, submillisecond response, hysteresis-free switching at room temperature. After had been preserved for one month 25 °C, electro-optical was confirmed as identical...

A previous study (Langmuir2011, 27, 5772) found the fluorinated double-tail sulfogulutarate 8FG(EO)(2) to act as a superefficient solubilizer for water in supercritical CO(2) (W/CO(2)) microemulsions. To explore more economic CO(2)-philic surfactants with high solubilizing power well rapid solubilization rates, effects of fluorocarbon chain length and linking group were examined sodium 1,5-bis(1H,1H,2H,2H-perfluoroalkyloxy)-1,5-dioxopentane-2-sulfonates (nFG(EO)(2), n = 4, 6, 8)...

We propose two molecular designs for a cybotactic nematic (Ncyb) phase. The U-shaped compound exhibits skewed Ncyb phase, whereas the rod-like possessing terminal hydroxyl group shows normal

A homologous series of novel λ-shaped mesogenic compounds in which three groups are connected to 3, 4-dihydroxybenzoic acid has been prepared and their physical properties investigated by means optical microscopy, differential scanning calorimetry X-ray diffraction measurements. The studied showed unusual smectic phases. 4-Cyanobiphenyl-4′-yl 3,4-bis{6-[4-(5-octylpyrimidin-2-yl)phenyloxy]hexyloxy}benzoate was found realize an incommensurate SmA (SmAinc) phase. "uniform planarly" aligned...

Novel antiferroelectric chiral smectic C (SmC A * ) materials are presented. Four homologous compounds having a 2-alkyl alkanoyl group in the part investigated. Three of them have SmC and show very short helical pitch . In contrast, other one has no exhibits rather long This result suggests that length relates closely to occurrence The introduction an ethyl into carbon instead methyl increases stability contrast with decreasing SmA All four third state even by application AC field....

Phase behavior was investigated for water/supercritical CO 2 (W/scCO2) microemulsions stabilized with sodium bis(1H,1H,2H,2H-heptadecafluorodecyl)-2-sulfosuccinate (8FS(EO) 2) mixed various guest surfactants. Only the mixtures fluorocarbon-hydrocarbon hybrid anionic surfactants (FC6-HC n), maximum water-to-surfactant molar ratio (W0(c)) larger than that estimated from linear interpolation of W0(c) values pure 8FS(EO) and surfactant. Fourier transform infrared (FT-IR) measurement...

Abstract We have designed a chiral T-shaped compound possessing flexible spacer, which was found to exhibit blue phase III with temperature range of about 30 K including room on cooling. Furthermore, the BPIII changed glass phase. Electrooptical switching observed at all temperatures BPIII.

After preparing catechol or biphenyl derivatives possessing two 2,3-difluoro-1,4-diphenylbenzene units, we investigated the phase transition behaviour of their mixture with a chiral additive high twisting power. Their was dependent on methylene number in spacer. Both hexamethylene unit spacer were found to exhibit wide-temperature blue phases mixture. The appearance discussed terms helical power, elasticity, and molecular biaxiality. It independent A large biaxiality small bend elastic...