Abstract: Described is an acoustic absorbing structure and system provided from a composite material having one or more channels provided therein with each of the one or more channels having an aperture opening onto a surface of the composite material. The channels are provided having a cross-sectional shape and dimensions selected to exhibit a low frequency resonance in response to a low frequency sound wave provided thereto such that acoustic absorbing structure has a predetermined response characteristic in response to an acoustic signal provided thereto. Techniques for operating an acoustic absorbing system are also described.

Abstract: Described is an acoustic absorbing structure and system provided from a composite material having one or more channels provided therein with each of the one or more channels having an aperture opening onto a surface of the composite material. The channels are provided having a cross-sectional shape and dimensions selected to exhibit a low frequency resonance in response to a low frequency sound wave provided thereto such that acoustic absorbing structure has a predetermined response characteristic in response to an acoustic signal provided thereto. Techniques for operating an acoustic absorbing system are also described.

Abstract: A method of evaluating outbound and inbound fare amounts out of a plurality of roundtrip fare recommendations is disclosed. Intended to be displayed in a one-way like display, roundtrip fares are first obtained from a fare-driven availability engine receiving inputs from an online user of a travel website. Further recommendations are deduced by combining the above roundtrip fare recommendations in order to obtain a first improved list of recommendations which comprises more outbound and inbound fare combinations. Then, one-way fare amounts are determined for each combination from the first improved list of recommendations. A second improved list of recommendations, comprising outbound and inbound fare amounts evaluated on the basis of the initial roundtrip fare recommendations, is generated. Outbound and inbound fare amounts can thus be shown in a one-way like display of roundtrip fares to the online user of the travel website.

Abstract: A system and method of retrieving and displaying travel data receives at a computing apparatus data representing a set of recommended travel itineraries. At least one recommended itinerary has a recommended booking class belonging to a predefined group of booking classes. A computing apparatus identifies a reference booking classes that is associated with the recommended booking class. The apparatus computes a fare value for the recommended itinerary based on a fare value of the associated booking class in the reference group plus a buy-across value. The predefined group may have fewer booking classes than the reference group, and most preferably has a single booking class.

Abstract: A method of evaluating outbound and inbound fare amounts out of a plurality of roundtrip fare recommendations is disclosed. Intended to be displayed in a one-way like display, roundtrip fares are first obtained from a fare-driven availability engine receiving inputs from an online user of a travel website. Further recommendations are deduced by combining the above roundtrip fare recommendations in order to obtain a first improved list of recommendations which comprises more outbound and inbound fare combinations. Then, one-way fare amounts are determined for each combination from the first improved list of recommendations. A second improved list of recommendations, comprising outbound and inbound fare amounts evaluated on the basis of the initial roundtrip fare recommendations, is generated. Outbound and inbound fare amounts can thus be shown in a one-way like display of roundtrip fares to the online user of the travel website.

Abstract: The device for monitoring the storage level of a product contained in a tank includes a device for measuring the storage level of the product, a central processing unit for utilizing the level read off by the measurement device, a memory for holding at least one storage level threshold, a device for comparing a level value output by the central processing unit with the threshold, a device for triggering a restocking command and controlled by the comparison device, and a device for transmitting the restocking command to a restocking center. It furthermore includes a device for receiving at least one time of information which is issued by the restocking center in response to the transmission of the restocking command.

Abstract: A plant for the treatment of food product. The plant comprises an apparatus for cooling food products by bringing the products into contact with a cryogenic fluid, a conveyor for introducing the products into the apparatus and for extracting the products from the apparatus, and a detector which determines at least one of (i) a value representative of the quality and (ii) the quantity of products treated by the apparatus.

Abstract: Process for controlling the rate of gas extraction of a gas extractor for an enclosure of a cryogenic apparatus comprising a cryogenic fluid feed and an internal atmosphere, the apparatus being in contact with an ambient medium, comprising the steps of:measuring the content (m.sub.02) of the internal atmosphere of the enclosure in terms of a gas of the ambient medium;defining a target content (u.sub.02) for the measured content;calculating the rate of gas extraction (r.sub.c) of the extractor as a function of the measured content (m.sub.02) so as to maintain this content substantially equal to the target content (u.sub.02); andoperating the extractor on the basis of the calculated rate of gas extraction (r.sub.c).

Abstract: The process for generating at least one warning signal relating to the level in a tank (3) for storing a product (4) comprises the following steps:the storage level of the product in the tank, together with the values of the product quantity consumed during predefined time intervals are determined,these values are placed in memory together with the associated measurement instants,at other successive instantsthe values placed in memory of the product quantity consumed are used to calculate a value of the estimated quantity of product which will be consumed in the future,this estimated value is subtracted from the last measurement value so as to obtain an estimated value of the storage level at a future instant,this estimated value of the storage level is compared with a preset threshold, anda warning signal is generated if the estimated value is less than the preset threshold.

Abstract: A food processing plant includes a food processing apparatus. The food processing apparatus including a device for setting set-point parameters for operation of the apparatus and a device for controlling operation of the apparatus based on the set-point parameters. The plant also includes a device for acquiring information relating to actual operation of the food processing apparatus, a unit for monitoring the apparatus, the unit being located remote from the apparatus and including a device for detecting anomalies in operation of the apparatus, and a device for communicating the information relating to the actual operation of the apparatus from the apparatus to the remote monitoring unit.

Abstract: Device for freezing fluid substances with the aid of a cryogenic fluid comprising:a conveying channel which conveys the substance to be frozen and the cryogenic fluid in a conveying direction relative to a horizontal, the conveying channel comprising, in the conveying direction, (i) at least one section which is inclined in relation to the horizontal to which is joined (ii) an essentially horizontal section comprising a conveying device;a metering device; anda withdrawing device for the substance to be frozen, wherein the metering device and the withdrawing device are placed at opposite ends of the conveying channel.