Attachment type and cognitive status of people in treatment for substance use and abuse : a thesis presented in partial fulfilment of the requirements for the degree of Master of Arts at Massey University

Irregular pagination:- pgs 80-81 are missingThis study demonstrates the importance of examining attachment issues, and the cognitive status of people in treatment for substance abuse. The participants were seven clients aged between 20 and 45 years of age, in treatment for substance abuse, and six of their counsellors. The Adult Attachment Interview (AAI: George, Kaplan & Main, 1996) was used as a therapeutic tool to uncover forgotten trauma and unresolved grief. Each of these participants was interviewed and portions of the transcripts are used to demonstrate the effectiveness of the instrument in use. These findings give examples of the richness of the client AAI transcripts which are then used in the counselling process. The second measure used was Loevinger's Sentence Completion Test (1976,1998) which was thought to show promise for indicating where people are 'stuck' in their thinking. In this study rather than being 'stuck' in an immature way of thinking participants show evidence of mature thinking. Classification of the AAI gave support to findings in attachment research that reflect a substantial and enduring connection between attachment organisation and psychopathology, and was linked to a wide array of indices of psychosocial functioning. Intergenerational transmission of severe insecure attachment behaviours was evident with all clients, as expected, which suggests that further investigation of the use of the AAI in therapy is important

Metal containing polymers from cyclic tetrameric phenylphosphonitrilamides Patent

Chemical synthesis of thermally stable organometallic polymers with divalent metal ion and tetraphenylphosphonitrilic unit

Optimizing time and space MIMO antenna system for frequency selective fading channels

Smart or adaptive antennas promise to provide significant increases in system capacity and performance in wireless communication systems. In this paper, we investigate the use of adaptive antennas at the base and mobile stations, operating jointly, to maximize the average signal-to-interference and noise ratio (SINR) of each packet in the system for frequency selective channels with prior knowledge of the channel at the transmitter. Our approach is based on deriving an analytic formula for the average packet SINR and using the Lagrange multiplier method to determine an optimum. We derive necessary conditions for an optimum solution and propose an analytical expression for the optimum. Our analytical expression is not guaranteed to be the global optimum but it does satisfy the derived necessary conditions and, in addition for frequency flat channels, our results reduce to expressions for optimal weights previously published. To demonstrate the potential of the proposed system, we provide Monte Carlo simulation results of the system bit-error rates and make comparisons with other adaptive antenna systems. These show that significant improvements in performance are possible in a wireless communications context

Performance enhancement of multiuser MIMO wireless communication systems

This paper describes a new approach to the problem of enhancing the performance of a multiuser multiple-input-multiple-output (MIMO) system for communication from one base station to many mobile stations in both frequency-flat and frequency-selective fading channels. This problem arises in space-division multiplexing systems with multiple users where many independent signal streams can be transmitted in the same frequency and time slot through the exploitation of multiple antennas at both the base and mobile stations, Our new approach is based on maximizing a lower bound for the product of signal-to-interference plus noise ratio (SINR) of a multiuser MIMO system. This provides a closed-form (noniterative) solution for the antenna weights for all the users, under the constraint of fixed transmit power. Our solution is shown by simulation to have better performance than previously proposed iterative or noniterative solutions. In addition, our solution requires significantly reduced complexity over a gradient search-based method that directly optimizes the product SINgs while still maintaining similar performance. Our solution assumes channel state information is present at the base station or transmitter

A joint-channel diagonalization for multiuser MIMO antenna systems

In this paper, we address the problem of improving the performance of multiuser space-division multiplexing (SDM) systems where multiple independent signal streams can be transmitted in the same frequency and time slot. The problem is important in multiuser multiple-input multiple-output systems where communication from one base station to many mobile stations can occur simultaneously. Our objective is to devise a multiuser linear space-time precoder for simultaneous channel diagonalization of the multiuser channels enabling SDM. Our new approach is based on diagonalizing the multiuser channel matrices and we use a variation of successive Jacobi rotations. In addition to the diagonalization, our approach attempts to optimize the resultant channel gains for performance enhancement. Our method is valid for both frequency-flat and frequency-selective fading channels but we assume that the base station knows all the channels and that they are quasi-stationary

Synthesis of linear, double chain, ladder polymers from substituted tetraphosphonitriles Quarterly progress report, Jun. - Aug. 1966

Synthesis of linear, double-chain, ladder polymers from substituted tetraphosphonitrile

Synthesis of linear, double chain ladder polymers from substituted tetraphosphonitriles Annual report, 3 May 1965 - 2 May 1966

Synthesis of linear, double-chain ladder polymers from substituted tetraphosphonitrile