Discrimination of beef muscle based on visible-near infrared multi-spectral features: Textural and spectral analysis

The potential of multi-spectral visible-near infrared imaging to discriminate beef meat muscles in relation with their type and animal origin was examined in the present study. Two hundred forty muscles of three types (longissimus thoracis, biceps femoris, and semimembranosus) were obtained from the carcasses of three types of animals, two late-maturing cattle types of animals (Limousin and Blond d’Aquitaine) that grow slowly and deposit more muscles and less fat, compared to one early-maturing cattle types of animals (Angus) which tends to have muscles richer in collagen and in intramuscular fat. Two hundred forty cube images were collected with nineteen Ligth Emitting Diodes (405 to 1050 nm) using the Videometer Lab2 device. The image cubes were processed in order to extract image mean spectra and image shape features from co-occurrence and difference of histogram matrices. The results of the partial least square discriminant analysis performed on image texture features and spectral data show a maximum ranging from 63.5 to 83% of good classification depending on the muscle and breed considered. This study demonstrated the promising potential of the visible-near infrared multi-spectral imager to characterize beef meat muscles based on muscle type and its animal origin.     

Monitoring two boys' processes through the stages of child-centered play therapy.

This article describes two boys' actions in child-centered play therapy (CCPT) through the lens of the typical stages in CCPT as described by Nordling and Guerney (1999). Both boys were referred for severe attention and aggression problems that had persisted for more than one school year at age six. While each boy engaged in CCPT in unique ways, the authors were able to clearly discern the stages in each boy's play. The authors assert for the value of play therapists' ability to discern stages in children's therapeutic play to monitor progress and determine readiness to end from an internal to the child gauge, as well as through the external gauges of behavior change reports from parents and teachers. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Leah King-Smith and the Nineteenth-century Archive

Abstract

In postmodern criticism the camera has often been seen as an apparatus of control, one of the surveillance mechanisms of the state, in the service of its institutions and immersed in its technologies of power. The metaphor of the camera as a weapon, as analysed by Susan Sontag in the early 1970s, describes an unbalanced and non-reciprocal relationship between photographer and subject.¹ One is the hunter, the other the prey; one is the agent, the other the victim. This theoretical paradigm was consolidated in the 1980s when structuralist critics started to analyse nineteenth-century photographic archives held in libraries, institutions and museums.² Much of this criticism followed the work of Michel Foucault who used Jeremy Bentham's model of the Panopticon to analyse the controlling mechanism of the gaze in modern institutions.³ I am aware that aligning Foucault with structuralism will appear problematic to some; however, the way in which some of his work has been adapted by postmodern critics of photography does underline the determinism of his theory. For a lucid analysis, see Joan Copjec, Read my Desire: Lacan against the Historicists, Cambridge, MA: MIT Press 1994, 1–10. For a different perspective, sympathetic to Foucault, see Geoffrey Batchen, Burning with Desire: The Conception of Photography, Cambridge, MA: MIT Press 1997. Although Foucault's concept of power is productive and he admits to sites of resistance, he is pessimistic about the possibilities of such resistance.⁴ Discipline and Punish, upon which many theories of photographic surveillance are predicated, constructs disciplinary power as ‘the nonreversible subordination of one group of people by another’.⁵     

Episodic memory and impairment of an early encoding process in schizophrenia.

Investigations of memory impairment in schizophrenia have frequently revealed a strategic processing deficit at encoding. The authors studied an early encoding process, refreshing (in this case, thinking of a stimulus that has just-previously been presented), and its impact on recognition memory in schizophrenia. Following simultaneous presentation of three words or a single word in the top, middle, or bottom position of the screen, 25 patients with schizophrenia and 25 control participants saw and read a new word (read condition), or a word presented on the previous screen (repeat condition), or saw a dot indicating that they should think of and say the last word to have appeared in that position (refresh condition). Later, on a surprise test, participants were asked to recognize words seen previously and give a Remember, Know, or Guess response according to whether they recognized each on the basis of conscious recollection, familiarity, or guessing. The cognitive operation of refreshing was impaired in schizophrenia: patients were slower on 1-word trials and less accurate on 3-word trials to refresh a word, and their Remember responses did not benefit from refreshing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A comparative assessment of thin-film photovoltaic production processes using the ELECTRE III method

The use of renewable energy sources for the production of electric power brings huge benefits both in terms of environmental protection as well as savings in non-renewable resources. Photovoltaic stands out from other renewable energy sources for its simplicity and the modularity of its energy conversion system. To date, the most highly developed technology for the construction of solar cells is one based on mono and polycrystalline silicon. An alternative production line is currently under development to produce, thin-film modules. There are currently a variety of processes and materials available to make thin-film cells but their relative costs and performance differ. Therefore, it would be useful to make a comparative evaluation of the different processes using a multiple criteria method.     

Juxta‐terminal Helix Unwinding as a Stabilizing Factor to Modulate the Dynamics of Transmembrane Helices

Transmembrane helices of integral membrane proteins often are flanked by interfacial aromatic residues that can serve as anchors to aid the stabilization of a tilted transmembrane orientation. Yet, physical factors that govern the orientation or dynamic averaging of individual transmembrane helices are not well understood and have not been adequately explained. Using solid‐state ²H NMR spectroscopy to examine lipid bilayer‐incorporated model peptides of the GWALP23 (acetyl‐GGALW(LA)₆LWLAGA‐amide) family, we observed substantial unwinding at the terminals of several tilted helices spanning the membranes of DLPC, DMPC, or DOPC lipid bilayers. The fraying of helix ends might be vital for defining the dynamics and orientations of transmembrane helices in lipid bilayer membranes.