IntroductionThis article presents a psychodynamic overview of key features of the social worker's use of relationship. Its purpose is to indicate how psychodynamic insights can assist the social worker to be of maximum helpfulness in the difficult and complex human situations in which they are involved.

Wireless sensor networks have become incredibly popular due to the Internet of Things' (IoT) rapid development. IoT routing is the basis for the efficient operation of the perception-layer network. As a popular type of machine learning, reinforcement learning techniques have gained significant attention due to their successful application in the field of network communication. In the traditional Routing Protocol for lowpower and Lossy Networks (RPL) protocol, to solve the fairness of control message transmission between IoT terminals, a fair broadcast suppression mechanism, or Drizzle algorithm, is usually used, but the Drizzle algorithm cannot allocate priority. Moreover, the Drizzle algorithm keeps changing its redundant constant k value but never converges to the optimal value of k. To address this problem, this paper uses a combination based on reinforcement learning (RL) and trickle timer. This paper proposes an RL Intelligent Adaptive Trickle-Timer Algorithm (RLATT) for routing optimization of the IoT awareness layer. RLATT has triple-optimized the trickle timer algorithm. To verify the algorithm's effectiveness, the simulation is carried out on Contiki operating system and compared with the standard trickling timer and Drizzle algorithm. Experiments show that the proposed algorithm performs better in terms of packet delivery ratio (PDR), power consumption, network convergence time, and total control cost ratio.

The role of the radiographer in child protection has received little attention. This review considers issues which arise in this ®eld, highlighting the implications for those responsible for the management of child protection systems, for those responsible for training, and for sta in other specialisms and professions within the hospital. The dierent types of imaging technique are discussed with some comment on their advantages and disadvantages. Forced immobilisation is sometimes required, and consideration is given to the issues which arise for the radiographer and abused child in this process.