The modification of schizophrenic performance by drugs and by positive reinforcement

Thesis (Ph.D.)--Boston UniversityThe purpose of the present study was to determine whether positive reinforcement, chlorpromazine and secobarbital alter the ability of chronic schizophrenics to maintain sustained attention and whether these affect their psychomotor functioning. Eight male, chronic schizophrenic patients, with an age range of 25-50 and in good physical health, served as the subjects. All subjects had been hospitalized continuously for at least three years. Medication was discontinued for all subjects two months before the study started. In the course of the study, each subject was tested twice under all of the following conditions: no-drug, placebo, chlorpromazine 100 mg, chlorpromazine 200 mg, secobarbital 100 mg, secobarbital 200 mg. The drugs were given once weekly in single doses. A testing day consisted of four sessions: 1/2, 1 1/2, 2 1/2, and 3 1/2 hours post-medication. The different drug conditions were administered according to a modified Latin Square design with each active drug following each other active drug an equal number of times. Half of the trials in each session were reinforced by candy and cigarettes and the other half were not. Two tests were employed: The Continuous Performance Test (CPT), and the Subject Paced Test (SPT). On the CPT, a test of sustained attention, a subject is required to respond, by pulling a lever, to one of twelve letters which are randomly exposed at the rate of 1.10 sec. for a period of .10 second.[TRUNCATED

ANALISIS DAN PERANCANGAN INFRASTRUKTUR KEAMANAN JARINGAN (Studi Kasus: Universitas Negeri Manado)

The network security has become more important since people spend most of their time to get connected through computer network. The quick development of Internet and internal networking requires the security towards internal network from external network attacks or even by the internal network itself. Universitas Negeri Manado (UNIMA) is one of the universities in North Sulawesi that has been implementing and adapting information technology and communication. The related problems about the issue of network security, such as, hacker activity, virus attacs, denial of service attack (DoS), spyware, malware, and the other attacks may threaten the network security anytime when there is no good management and control because of the limitation of experts in that infrastructure and network security. In order to overcome and prevent the network security problem, it needs to do the network infrastructure analysis and to design the infrastructure that is suitable with the recent and future demands by using Access/Distribution/Core Architectural Model as the basic research development that will be done. The result of this research is the programming of short term and long term network security

Israel today

Arije Levi, poslanik države Izrael u Jugoslaviji, opisuje situaciji u Izraelu osam godina po osnivanju države. Još uvek je nemaština i borba za preživljavanje ali prvi rezultati vrednog rada već se vide. Misija mlade republike je da učini kraj istorijskoj tragediji Jevreja bez domovine i da u isto vreme obezbedi opstanak i plodni razvoj jevrejskog kulturnog nasleđa.Arie Levi, minister of the State of Israel in Yugoslavia, describes the situation in Israel eight years after the country was founded. It's still poverty and a struggle to survive, but the first results of hard work are already visible. The mission of the young republic is to end the historical tragedy of Jews without a homeland and at the same time ensure the survival and fruitful development of Jewish cultural heritage

Eldad et Medad : ou le joueur converti

trad. de Léon de Modène, et précédé d'une notice sur la vie de l'auteur, par E. Carmol

The effect of sodium fluoride and potassium fluoride solutions on the solubility of dental enamel? A chemical and histological study.

OPLADEN-RUG0