Objectives of this study were to identify the hotspot for displacement of the on-line water quality sensors, in order to detect illicit discharge of untreated wastewater. A total of twenty-six water quality parameters were measured in sewer networks of the industrial complex located in Daejeon city as a test-bed site of this study. For the water qualities measured on a daily basis by 2-hour interval, the self-organizing maps(SOMs), one of the artificial neural networks(ANNs), were applied to classify the catchments to the clusters in accordance with patterns of water qualities discharged, and to determine the hotspot for priority sensor allocation in the study. The results revealed that the catchments were classified into four clusters in terms of extent of water qualities, in which the grouping were validated by the Euclidean distance and Davies-Bouldin index. Of the on-line sensors, total organic carbon(TOC) sensor, selected to be suitable for organic pollutants monitoring, would be effective to be allocated in D and a part of E catchments. Pb sensor, of heavy metals, would be suitable to be displaced in A and a part of B catchments.

This study investigated the differences between gender for effectiveness of career competencies training and integrative life planning on career aspirations, self-identity and congruity between the real and ideal self of adolescents in Lokoja, Nigeria. The sample consisted of 227 adolescents who scored low on Ego-identity scales and were found exhibiting low self-identity, which affected their career aspirations. They were made up of 114 males and 113 females. Quasi-experimental pre-test, post-test and control group design was used with the sample, which was randomly assigned to three groups. Career Competencies Training (CCT), Integrative Life Planning (ILP) and the control. A Self-Identity Questionnaire (SIQ), Congruity Questionnaire (CQ) and Career Aspiration Questionnaire (CAQ) were administered to the three groups before and after the experimental programmes. CCT and ILP groups were the training groups while the control was the waiting group. The statistical tools used were Means, Standard Deviation and ANCOVA. A null hypothesis was formulated to guide the study and was tested at 0.05 level of significance. There is no significant difference in the post-test scores on the self-identity, career aspiration, and congruity of real and ideal self of adolescents exposed to career competencies training, integrative life planning and the control group due to gender. The use of both training is therefore recommended. Parents should be encouraged to take cognizance of the congruity between the real self and the ideal self of their adolescents so that they can be properly guided on their career aspirations.