Abstract: A method of regioselectively preparing a pyridine-containing compound is provided. In particular embodiments, the method includes reacting halogen-functionalized pyridal[2,1,3]thiadiazole with organotin-functionalized cyclopenta[2,1-b:3,4-b?]dithiophene or organotin-functionalized indaceno[2,1-b:3,4-b?]dithiophene. Also provided is a method of preparing a polymer. The method includes regioselectively preparing a monomer that includes a pyridal[2,1,3]thiadiazole unit; and reacting the monomer to produce a polymer that includes a regioregular conjugated backbone section, wherein the section includes a repeat unit containing the pyridal[2,1,3]thiadiazole unit. A polymer that includes a regioregular conjugated backbone section, and electronic devices that include the polymer, are also provided.

Abstract: A method and system of accelerating the acquisition and reconstruction of magnetic resonance images. Magnetic resonance imaging (“MRI”) data is acquired from a plurality of coils using parallel MRI (“pMRI”). The MRI data represents a reduced field-of-view (“FOV”) image for each of a plurality of coils. The MRI data is further undersampled by sequentially applying a compressed sensing (“CS”) technique, such as SparseMRI. The undersampled, reduced FOV images are then reconstructed into a final magnetic resonance image using a pMRI reconstruction technique, such as SENSitivity encoding (“SENSE”). This combination of MR image acquisition, sampling, and reconstruction is referred to as CS-SENSE.

Abstract: Methods and compositions to improve the performance of single-component polymer FETs is provided comprising processing a conjugated polymer in the presence of a processing additive. Also provided is a FET device fabricated with a processing additive. Such devices have increased saturation hole and/or electron mobility compared to a control FETs.

Abstract: A method of regioselectively preparing a pyridine-containing compound is provided. In particular embodiments, the method includes reacting halogen-functionalized pyridal[2,1,3]thiadiazole with organotin-functionalized cyclopenta[2,1-b:3,4-b?]dithiophene or organotin-functionalized indaceno[1,2-b:5,6-b?]dithiophene. Also provided is a method of preparing a polymer. The method includes regioselectively preparing a monomer that includes a pyridal[2,1,3]thiadiazole unit; and reacting the monomer to produce a polymer that includes a regioregular conjugated backbone section, wherein the section includes a repeat unit containing the pyridal[2,1,3]thiadiazole unit. A polymer that includes a regioregular conjugated backbone section, and electronic devices that include the polymer, are also provided.

Abstract: A method for the production neutral triblock all-conjugated copolymers by palladium-catalyzed chain-growth polymerization, and methods to convert these copolymers into all-conjugated triblock polyelectrolytes with well-controlled molecular weight and polydispersity. A device is provided which incorporates such all-conjugated triblock polyelectrolytes as an electron injection layer.

Abstract: Thermoplastic polyester compositions, comprising: (a) 54-98% by weight of at least one polytrimethylene terephthalate; (b) 1-45% by weight of at least one impact modifier, and the at least one impact modifier is selected from ethylene copolymers having a general formula of E/X/Y, wherein: E is a radical derived from ethylene and accounts for 40-90% by weight of the total weight of the ethylene copolymer; X accounts for 9-55% by weight of the total weight of the ethylene copolymer and is a radical derived from a monomer having the following general formula: wherein, R1 is an alkyl containing 2-8 carbon atoms; R2 is H, CH3 or C2H5; Y is a radical derived from a monomer unit selected from glycidyl methacrylates and glycidyl acrylates and accounts for 0.5-40% by weight of the total weight of the ethylene copolymer; and (c) 0.01-3.0% by weight of a cationic catalyst, and the cation is selected from the group consisting of Mg2+, Sn2+, and Zn2+ and mixtures of these.

Abstract: A method and a system for generating a magnetic resonance image of a subject. The method and system include generating a first pulse having first random data having a first amplitude and a first linear phase; applying the first pulse to the subject as an radio frequency pulse; collecting a first signal from the subject; generating a second pulse having second random data having a second amplitude and a second linear phase, wherein the second amplitude is substantially equal to the first amplitude, and wherein the second phase has a different slope from the first phase; applying the second pulse to the subject as an radio frequency pulse; collecting a second signal from the subject; and reconstructing an image of the subject.

Abstract: A method and system of accelerating the acquisition and reconstruction of magnetic resonance images. Magnetic resonance imaging (“MRI”) data is acquired from a plurality of coils using parallel MRI (“pMRI”). The MRI data represents a reduced field-of-view (“FOV”) image for each of a plurality of coils. The MRI data is further undersampled by sequentially applying a compressed sensing (“CS”) technique, such as SparseMRI. The undersampled, reduced FOV images are then reconstructed into a final magnetic resonance image using a pMRI reconstruction technique, such as SENSitivity encoding (“SENSE”). This combination of MR image acquisition, sampling, and reconstruction is referred to as CS-SENSE.

Abstract: A method of parallel magnetic resonance imaging (pMRI) comprising acquiring pMRI signals simultaneously through a plurality of receiving coils, wherein each coil has a localized sensitivity with respect to an imaged volume; jointly estimating values for the imaged volume and for a sensitivity function for at least one of the plurality of receiving coils; and transmitting the reconstructed image to a device.

Abstract: Methods and system for dynamic reallocation of data processing resources for efficient processing of sensor data in a distributed network is provided. The methods and system include determining a data transmission cost ft; determining a data processing cost fp; determining a data storage cost fs; and determining a data query Q which minimizes f(ft+fp+fs) for a system of networked data processing resources.

Abstract: A method and a system for generating a magnetic resonance image of a subject. The method and system include generating a first pulse having first random data having a first amplitude and a first linear phase; applying the first pulse to the subject as an radio frequency pulse; collecting a first signal from the subject; generating a second pulse having second random data having a second amplitude and a second linear phase, wherein the second amplitude is substantially equal to the first amplitude, and wherein the second phase has a different slope from the first phase; applying the second pulse to the subject as an radio frequency pulse; collecting a second signal from the subject; and reconstructing an image of the subject.

Abstract: A method of parallel magnetic resonance imaging (pMRI) comprising acquiring pMRI signals simultaneously through a plurality of receiving coils, wherein each coil has a localized sensitivity with respect to an imaged volume; jointly estimating values for the imaged volume and for a sensitivity function for at least one of the plurality of receiving coils; and transmitting the reconstructed image to a device.

Abstract: Methods and system for dynamic reallocation of data processing resources for efficient processing of sensor data in a distributed network is provided. The methods and system include determining a data transmission cost ft; determining a data processing cost fp; determining a data storage cost fs; and determining a data query Q which minimizes f(ft+fp+fs) for a system of networked data processing resources.