Neonatal handling reduces the number of cells in the locus coeruleus of rats.

Neonatal handling induces long-lasting effects on behaviors and stress responses. The objective of the present study was to analyze the effects of neonatal handling (from the 1st to the 10th day after delivery) on the number of cells and volume of locus coeruleus (LC) nucleus in male and female rats at 4 different ages: 11, 26, 35, and 90 days. Results showed significant reductions in the number of cells and the volume of the LC nucleus in neonatally handled males and females compared with nonhandled rats. Environmental stimulation early in life induced a stable structural change in a central noradrenergic nucleus, which could be one of the causal factors for the behavioral and hormonal alterations observed in adulthood. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Influence of Suspension Plasma Spraying Process Parameters on TiO2 Coatings Microstructure

The study aimed at optimizing the suspension plasma spraying of TiO₂ coatings obtained using different suspensions of fine rutile particles in water solution onto aluminum substrates. The experiments of spraying were designed using a 2³ full factorial plan. The plan enabled to find the effects of three principal parameters, i.e. electric power input to plasma, spray distance, and suspension feed rate onto microstructure of coatings, content of anatase phase and size of anatase crystals in the coatings. The microstructure of deposits was observed with scanning electron microscope (SEM) and optical microscope and their composition was characterized using energy dispersive spectrometry (EDS). The observations were made on the coatings surface and their cross-sections. The latter made it possible to determine the coatings thicknesses to be in the range from 8 to 33 μm.

QoS management in mobile IP networks using a terminal assistant

This paper describes a signalling environment for Quality of Service (QoS) negotiation and advance resource reservation in mobile IP networks. This environment is built in conformance with the generic signalling environment, which is standardized by the NSIS IETF working group. The advanced resource reservation protocol, called MQoS NSLP, is based on the QoS NSLP signalling application. It provides to mobile terminals the QoS required based on the user's mobility and QoS profile. In this work, we investigate the use of some techniques of the AI (Artificial Intelligence) domain to implement a user interface called NIA (Negotiation Individual Assistant) in order to determine the QoS profile and negotiate the QoS parameters in the new domain after the handover. Therefore, we use connectionist learning in the management of the negotiation profiles and agent technology to help the user choose the best service provider, dynamically negotiate the QoS on the user's behalf, and follow the user's behaviour to be able to anticipate the negotiation and manage renegotiation. The advance resource reservation is based on an object MSpec (Mobility Specification) which determines the future location of the mobile terminal. The MSpec object is a part of the mobility and QoS profile and is determined by the NIA in the mobile terminal. Copyright © 2008 John Wiley & Sons, Ltd.     

Blockchain and artificial intelligence for network security

Annals of Telecommunications -     

Parent–child interaction: The influence of maternal employment.

Data were collected from 40 mother–father–preschool child triads, including 20 employed and 20 nonemployed mothers. Information from the Parent-Child Activity Questionnaire, in-home unstructured observations, play task observations, and observer ratings indicated that maternal employment did not significantly alter the role specialization observed in single earner families. Mothers exhibited more caretaking, quiet play, positive affect, and speaking, whereas fathers exhibited more active play. Parents from single earner families demonstrated more speaking and quiet play than parents from dual earner families. Sons received more attention in families with nonemployed mothers, whereas daughters received more attention in families with employed mothers. Parents from families with employed mothers had more favorable attitudes toward dual roles for women. There was increased negative affect in families experiencing incongruence between parents' attitudes and the mother's employment status. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Female preschoolers' perceptions of affective responses and interpersonal behavior in videotaped episodes.

Constructed an empathy measure to test whether 3- and 4-yr-old children can perceive affective states as indicated by H. Borke (see record 1972-00686-001). 8 filmed episodes had congruous and incongruous stimulus features-4 episodes represented incongruity and 4 represented parallel congruous episodes where positive or negative affect was matched to the appropriate positive or negative interpersonal behavior. 48 female 2-5 yr old preschoolers were divided into high and average mental age groups and were asked to tell the story about each episode. Findings reveal that on the congruous episodes, there was a significant main effect of Mental Age for reasons for affective responses, for affective responses, and for intrapersonal behavior; however, this main effect was only significant for the latter 2 measures on incongruous episodes. Ss scored significantly higher on the congruous than on the incongruous episodes. There was no significant main effect of Chronological Age for any measure. (22 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

THE MATRIX CIPHER OF C. L. DODGSON

A diary entry of Charles L. Dodgson, better known as Lewis Carroll, indicates that he invented two polyalphabetic ciphers in 1858. He published neither of them. In this paper we present one, a matrix based cipher, and show that it is equivalent to a Variant Beaufort cipher using a non-standard arithmetic. This is placed in historical perspective not only from the point of view of cryptography but also in regard to the state of mathematics in England in the middle of the nineteenth century. The authors have written a computer program that can be used to explore this and similar ciphers.     

Semantics of looping programs in Propositional Dynamic Logic

Standard and nonstandard models of Propositional Dynamic Logic differ in their interpretation of loops. In Standard models, a loop is interpreted as the Kleene closure of the interpretation of its loop body; in nonstandard (Loop Invariant) models, a loop is interpreted as a program which preserves invariant assertions over the loop body.In this paper we show that both interpretations are adequate to represent loops in PDL. We demonstrate this in two ways: First we note that Standard and Loop Invariant models are distinct but not distinguishable within PDL. Second, we show that the class of Loop Invariant models is complete with respect to the Segerberg axiomatization of PDL. Since completeness of the class of Loop Invariant models implies completeness of the class of Standard models, Standard models are also complete with respect to this axiomatization.The research reported here was supported in part by NSF Grants MCS77-02474 and MCS80-05387. Most of the results in this paper were announced in A Completeness Technique forD-axiomatizable Semantics presented at the 11th Annual ACM Symposium on the Theory of Computing in May, 1979.