摘要:
A position estimating system capable of accurately estimating the position assumed by a target terminal user based upon measurement of wireless reception signal levels of signals from a target terminal is provided. The position estimating system includes a target terminal that wirelessly transmits a position estimation request, a plurality of reference terminals disposed at specific positions which, measure the signal strength of wireless signals from the target terminal and a position estimating server that estimates the position of the target terminal based upon the reception signal levels measured in correspondence to each of the reference terminals. The reference terminals each include a reception signal level utilization OK/NG judgment unit that makes a judgment as to whether or not the reception signal level value having been measured is to be used in position estimation based upon an index indicating the level of reliability of the reception signal.
摘要:
A wireless multi-hop network of a communication system is structured with a number of the communication devices and the collecting communication device. Transmission information from each communication devices is sequentially relayed to reach the collecting communication device. Each communication device features a function for on/off control of a transmission/reception processing section. The communication device also includes: a section which appends an urgent flag to urgent information that is to be relayed and transmits the urgent information, and fixes the transmission/reception processing section to ‘on’; a section which verifies a relay by a relay destination communication device and, if verification is achieved, fixes the transmission/reception processing section to ‘on’ and switches to a state for promptly relaying received information; a section which, if the verification is not achieved, retransmits the urgent information; and a section which, when retransmitted urgent information is received, relay-transmits the information immediately.
摘要:
A semiconductor bare chip includes a plurality of stud bumps provided on the surface of the semiconductor bare chip body, each of the stud bumps including a seat and a head protruding from the seat. A height of the head is less than a thickness of electrodes on said board.
摘要:
A process for manufacturing a medium-carbon steel plate having a graphitization of 50% or more with improved formability and weldability is disclosed, the process comprises the steps of:hot rolling a steel with a finishing temperature of 700.degree.-900.degree. C., the alloy composition of the steel consisting essentially of, by weight %:C: 0.20-0.70%,Si: more than 0.20 but not more than 2.00%,Mn: 0.05-0.50%, P: not more than 0.020%,S: not more than 0.010%, sol. Al: 0.01-1.00%,B: 0.0003-0.0050%, N: 0.002-0.010%,B/N: 0.2-0.8,Cu: 0-1.00%, Ni: 0-2.00%, Ca: 0-0.010%, andFe and incidental impurities: balance,cooling the resulting hot-rolled steel plate at a cooling rate of 5.degree.-50.degree. C./s,coiling the steel plate at a temperature of 400.degree.-650.degree. C., andoptionally, cold rolling the hot-rolled steel plate with a reduction in thickness of 20-85%, andannealing the cold-rolled steel plate at a temperature of 600.degree.- Ac.sub.1 for 1 hour or longer.
摘要:
A process for producing recombinant human Cu, Zn-superoxide dismutase, which comprises treating a solution of copper-free or copper-deficient recombinant human Cu, Zn-superoxide dismutase with a copper salt in the presence of .beta.-mercaptoethanol.
摘要:
A smell sensing element and a smell sensing device utilizing the element. The smell sensing element has a semiconductor portion formed mainly of SnO.sub.2. The semiconductor portion has a first component of at least one selected from the group consisting of oxides of alkaline earth metals and a second component of at least one selected from the group consisting of oxides of Sc, Y, Ti, Zr, Hf, Th, Al, Ga and lanthanoids added thereto.
摘要:
There is disclosed a process for preparing a 1,2,4-triazole-3-carboxamide represented by the formula: ##STR1## wherein, R.sup.1 and R.sup.2 represent independently a hydrogen atom, an alkyl group, a cycloalkyl group or an aryl group, or both R.sup.1 and R.sup.2 represent an alkylene group linked with each other directly or through an oxygen atom or a nitrogen atom to form a ring together with the nitrogen atom to which they are attached,which comprises subjecting an oxamohydrazide represented by the formula: ##STR2## wherein R.sup.1 and R.sup.2 have the same meanings as defined above,to reaction with formamidine or a salt thereof.
摘要:
Novel orotic acid derivatives useful as agricultural chemicals or intermediates thereof are disclosed. The orotic acid derivatives are represented by the formula ##STR1## where Me is an alkali metal, R.sup.1 is an alkyl group of from 1 to 4 carbon atoms, an allyl group, a cyclohexyl group, a benzyl group, or a group ##STR2## (where R.sup.2 is an alkyl group of from 1 to 4 carbon atoms, an alkoxyl group of from 1 to 4 carbon atoms or a halogen atom and n is 0, 1, 2 or 3), m is an integer of 1 or 2, and X is a chlorine, bromine or iodine atom or a group --COR.sup.0 (where R.sup.0 is an alkyl group of from 1 to 4 carbon atoms or a phenyl group) when m is 1, and a group --COO.sup.- when m is 2.