appears from the petition that both parents of the child are dead or that neither parent can be found in the province or city and that the child has no guardian residing therein. Article 146. Representation of Child. - If it appears that neither of the parents nor the guardian of the child can be found in the province or city, it shall be the duty of the court to appoint some suitable person to represent him. Article 147. Duty of Fiscal. - The provincial or city fiscal shall appear for the State, seeing to it that there has been due notice to all parties concerned and that there is justification for the declaration of dependency, abandonment or neglect. The legal services section of the Department of Social Welfare, any recognized legal association, or any appointed de officio counsel shall prepare the petition for the Secretary of the Department of Social Welfare, his representative or the head of the duly licensed child placement agency, or the duly licensed individual and represent him in court in all proceedings arising under the provisions of this Chapter. Article 148. Hearing. - During the hearing of the petition, the child shall be brought before the court, which shall investigate the facts and ascertain whether he is dependent, abandoned, or neglected, and, if so, the cause and circumstances of such condition. In such hearing, the court shall not be bound by the technical rules of evidence. Failure to provide for the child's support for a period of six months shall be presumptive evidence of the intent to abandon. Article 149. Commitment of Child. - If, after the hearing, the child is found to be dependent, abandoned, or neglected, an order shall be entered committing him to the care and custody of the Department of Social Welfare or any duly licensed child placement agency or individual. Article 150. When Child May Stay In His Own Home. - If in the court's opinion the cases of the abandonment or neglect of any child may be remedied, it may permit the child to stay in his own home and under the care and control of his own parents or guardian, subject to the supervision and direction of the Department of Social Welfare. When it appears to the court that it is no longer for the best interests of such child to remain with his parents or guardian, it may commit the child in accordance with the next preceding article. Article 151. Termination of Rights of Parents. - When a child shall have been committed to the Department of Social Welfare or any duly licensed child placement agency or individual pursuant to an order of the court, his parents or guardian shall thereafter exercise no authority over him except upon such conditions as the court may impose. Article 152. Authority of Person, Agency or Institution. - The Department of Social Welfare or any duly licensed child placement agency or individual receiving a child pursuant to an order of the court shall be the legal guardian and entitled to his legal custody and control, be responsible for his support as defined by law, and when proper, shall have authority to give consent to his placement, guardianship and/or adoption. Article 153. Change of Custody. - The Department of Social Welfare shall have the authority to change the custody of a child committed to and duly licensed child placement agency or individual if it appears