Antennas for wide area distributed RFID systems

© 2020 IEEE. This paper describes the use of Wide Area Distributed RFID Systems to enable wide area coverage of UHF RFID with high likelihood of tags anywhere within the area being successfully detected. The implications on antenna design are discussed and novel loop antenna meeting the requirements is presented

Performance Analysis of Passive UHF RFID Systems under Cascaded Fading Channels and Interference Effects

In this paper, the performance of monostatic and bistatic passive ultrahigh-frequency radio-frequency identification (UHF RFID) systems under the effects of cascaded fading channels and interference is studied. The performance metric used is tag detection probability defined as probability that the instantaneous received power is higher than the receiver’s sensitivity. A closed-form expression of the detection probability is derived using cascaded forward and backscatter fading channels and reader antennas orientation. Furthermore, the performance of passive RFID systems under reader-to-tag interference caused by both the desired RFID signal and multiple RFID interferers is analyzed, and the effect of constructive and destructive interferences is examined. In addition, the maximum reading range in ideal, multipath fading and interfering environments is presented. The obtained results are very useful for the design and optimization of passive RFID systems from RF point of view.This work was made possible by NPRP grant NPRP4-726-2-272 from the Qatar National Research Fund (a member of Qatar Foundation).This is the accepted manuscript. The final version is available from IEEE at http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=6942226

Are codes of ethics promoting religious literacy for social work practice?

As codes of ethics play at least a symbolic, if not educational, role in highlighting and informing professional priorities, 16 codes of ethics for social work practice were examined for references to religion and belief and analysed against the four domains of Dinham’s religious literacy framework. Although religion and belief are mentioned in all but two of the documents, approximately half the surveyed codes only mention religion and belief in respect of either knowledge or skills. Some recognise the need for social workers to be aware of their own biases, but very few recognise the need to explain what is meant by religion and belief, despite these terms being in flux. While codes of ethics can contribute to the development of religious literacy among social workers, this requires social workers who already have some religious literacy to actively participate when codes of ethics are being revised

Seeking help for depression from family and friends: A qualitative analysis of perceived advantages and disadvantages

BACKGROUND People with depression often seek help from family and friends and public health campaigns frequently encourage such help seeking behaviours. However, there has been little systematically collected empirical data concerning the effects of such informal help seeking. The current study sought to investigate the views of consumers about the advantages and disadvantages of seeking support from family and friends for depression. METHODS Participants were the subset of 417 respondents to a survey, sent to 7000 randomly selected members of an Australian electoral community, who indicated that they had sought help for depression from family or friends. One item on the survey asked participants to indicate the advantages or disadvantages of seeking help from family or friends. A coding system was developed based on a content analysis of the responses to the item. Each of the responses was then coded by two raters. RESULTS Respondents identified both advantages and disadvantages of seeking support from friends. The most commonly cited advantage was social support (n = 282) including emotional support (n = 154), informational support (n = 93), companionship support (n = 36) and instrumental support (n = 23). Other advantages related to family's or friend's background knowledge of the person and their circumstances (n = 72), the opportunity to offload the burden associated with depression (n = 62), the personal attributes of family and friends (n = 49), their accessibility (n = 36), and the opportunity to educate family and friends and increase their awareness about the respondent's depression (n = 30). The most commonly cited disadvantages were stigma (n = 53), inappropriate support (n = 45), the family member's lack of knowledge, training and expertise (n = 32) and the adverse impact of the help seeking on the family/friend (n = 20) and the relationship (n = 18). CONCLUSIONS Family and friends are well placed to provide support which consumers perceive to be positive and which can assist them in obtaining formal mental health treatment. However, the input of some family members may be unhelpful or toxic. There may be benefits in undertaking community education and destigmatisation programs which target carers.Kathleen Griffiths is supported by NHMRC Fellowship 525413. Lisa Barney is supported by NHMRC Capacity Building Grant No. 41802