Multilevel semantic analysis and problem-solving in the flight-domain

The use of knowledge-base architecture and planning control; mechanisms to perform an intelligent monitoring task in the flight domain is addressed. The route level, the trajectory level, and parts of the aerodynamics level are demonstrated. Hierarchical planning and monitoring conceptual levels, functional-directed mechanism rationalization, and using deep-level mechanism models for diagnoses of dependent failures are discussed

Antisymmetric magnetoresistance in magnetic multilayers with perpendicular anisotropy

While magnetoresistance (MR) has generally been found to be symmetric in applied field in non-magnetic or magnetic metals, we have observed antisymmetric MR in Co/Pt multilayers. Simultaneous domain imaging and transport measurements show that the antisymmetric MR is due to the appearance of domain walls that run perpendicular to both the magnetization and the current, a geometry existing only in materials with perpendicular magnetic anisotropy. As a result, the extraordinary Hall effect (EHE) gives rise to circulating currents in the vicinity of the domain walls that contributes to the MR. The antisymmetric MR and EHE have been quantitatively accounted for by a theoretical model.Comment: 17 pages, 4 figure

N-(4-Bromophenyl)methoxycarbothioamide

The synthesis, spectroscopic and crystallographic characterisation of the title compound, O-methyl-N-4-bromophenyl thiocarbamate, MeOC(=S)N(H)PhBr-4 (1), are described. Spectroscopy confirmed the formation of the compound and the molecular structure was determined crystallographically. Two independent but chemically similar molecules comprise the asymmetric unit of 1. The C-S and C-N bond lengths confirm the presence of the thioamide tautomer. The thione-S and amide-N-H atoms are syn, enabling the formation of amide-N-H . . . S(thione) hydrogen bonds between the two independent molecules that generates a two-molecule aggregate via an eight-membered { . . . HNCS}2 synthon. The aggregates are connected into a three-dimensional architecture via weak intermolecular interactions, including Br. . . π(4-bromophenyl), S . . . π(4-bromophenyl), and weak Br. . . S halogen bonding contacts. The overall molecular conformation, thioamide tautomer, and the presence of amide-N-H . . . S(thione) hydrogen bonding in the crystal conform with expectation for this class of compound

O-Methyl m-Tolylcarbamothioate

The synthesis, spectroscopic, and crystallographic characterisation of the title compound,O-methyl m-tolylcarbamothioate, MeOC(=S)N(H)(m-tolyl) (1), are described. The crystallographic study confirms the structure determined by spectroscopy and shows the presence of the thioamide tautomer, a syn-disposition of the thione-S and thioamide-N-H atoms and, in the crystal, thioamide-N-H . . . S(thione) hydrogen bonding leading to an eight-membered { . . . HNCS}2 synthon

Crystal structure of the (E)-O-methyl-N-phenyl-thiocarbamate – 4,4′-bipyridine (1/1), C18H17N3OS

C18H17N3OS, monoclinic, C2/c (no. 15), a=13.4754(3) Å, b=13.8997(3) Å, c=18.0300(4) Å, β=107.202(3)°, V =3226.03(13) Å3, Z =8, Rgt(F)=0.0341, wRref(F2)=0.0878, T =100(2) K

Crystal structure of N-(3-chlorophenyl)(propan-2-yloxy)carbothioamide, C10H12ClNOS

C10H12ClNOS, monoclinic, P21/n (no. 14), a=13.2003(12) Å, b=6.0448(6) Å, c=13.9403(13) Å, β=101.9180(10)°, V =1088.36(18) Å3, Z =4, Rgt(F)=0.0291, wRref(F2)=0.0807, T =100(2) K

Multilevel semantic analysis and problem-solving in the flight domain

A computer based cockpit system which is capable of assisting the pilot in such important tasks as monitoring, diagnosis, and trend analysis was developed. The system is properly organized and is endowed with a knowledge base so that it enhances the pilot's control over the aircraft while simultaneously reducing his workload

[O-Isopropyl-N-(4-nitrophenyl)thiocarbamato-κS]-(tri-4-tolylphosphine-κP)gold(I)

The synthesis, spectroscopic characterization and X-ray crystal structure of the title compound, (4-tolyl)3PAu[SC(O-i-Pr)=NC6H4NO2-4] (1) are described. Spectroscopy exhibited the expected features confirming the formation of the compound. The molecular structure of 1 confirms the expected linear P–Au–S coordination geometry defined by thiolate-S and phosphane-P atoms. The nearly 7◦ deviation from linearity is ascribed to the close approach of the imine-bound phenyl group, indicative of a semi-localized Au . . . π(arene) interaction. The three-dimensional molecular packing is consolidated by methyl- and tolyl-C–H . . . O(nitro) and tolyl-C–H . . . π(tolyl) interactions

Crystal structure of the bis((E)-O-ethyl-N-phenylthiocarbamate) – 4,4′-bipyridine co-crystal (2/1), C28H30N4O2S2

C12H11N5, monoclinic, P21/n (no. 14), a=7.3455(1) Å, b=12.2470(1) Å, c=12.1689(1) Å, β=103.505(1)°, V =1064.45(2) Å3, Z =4, Rgt(F)=0.0365, wRref(F2)=0.0987, T =100 K

Crystal structure and molecular packing of O-ethyl (2-chlorophenyl)carbamothioate, C9H10ClNOS

The asymmetric unit of the title crystal structure is shown in the figure. Tables 1 and 2 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters