Most research into the adaptive significance of warning signals has focused on the colouration and patterns of prey animals. However, behaviour, odour and body shape can also have signal functions and thereby reduce predators' willingness to attack defended prey. European vipers all have a distinctive triangular head shape; and they are all venomous. Several non-venomous snakes, including the s...

The anti-inflammatory drugs, sodium salicylate, indomethacin, hydrocortisone, ibuprofen, and flurbiprofen, were examined for their effects on sulphated glycosaminoglycan synthesis in aged human cartilage in vitro. Cartilage was obtained from femoral heads removed during surgery and drug effects were found to vary significantly from one head to another. Statistical analysis of the results showed...

In this paper we deal with one-way multi-head data-independent finite automata. A k-head finite automaton A is data-independent, if the position of every head i after step t in the computation on an input w is a function that depends only on the length of the input w, on i and on t (i.e. the trajectories of heads must be the same on the inputs of the same length). It is known that k(k + 1)/2 + ...

Fine grain products are harvested in two manual and mechanized forms. Nowadays, common combine harvesters are used, but fine grain products such as Rapeseed, Sesame and Sorghum cannot be harvested with conventional heads of combine harvesters due to the excessive grain loss in the head of the combine. Therefore, the necessity of design and fabricating machines and heads of combine harvesters be...

in order to study the effects of shading on head and its near leaves on yield and yield components of spring safflower genotypes, an experiment was conducted in factorial arrangement based on a complete randomized block design with four replications at agricultural research station, faculty of agriculture, birjand university during 2008. factors were including three spring safflower genotypes (...

This reseacrh aims to find out the effect of probiotic administration Bacillus subtilis BN Strain on shell thickness, white index and chicken yolk index. research used 38-week-old layer laying hens as many 24 heads, randomized into four treatments with eight replays. Treatment consists P0 without addition probiotics, P1 0.005 grams / kg feed, P2 0.01 feed P3 0.02 feed. Based analysis statistica...

A series of experiments was carried out at Students Farm, Sindh Agriculture University, Tandojam to evaluate the effect of NPK, micronutrients and N-placement on the growth and yield of sunflower during 2005-2006. The sunflower cv. HO-1 was studied under 7 different NPK levels and placement methods (0-0-0 NPK kg ha, 6030-30 NPK kg ha (N as broadcast), 60-30-30 NPK kg ha (N as fertigation), 90-4...

In this paper, we used the fuzzy set theory for modeling flexible constraints and uncertain data in nurse scheduling problems and proposed a fuzzy linear model for nurse rostering problems. The developed model can produce rosters that satisfy hospital objectives, ward requirements and staff preferences by satisfying their requests as much as possible. Fuzzy sets are used for modeling demands of...

A head tracking system for automatically detecting and tracking human heads in complex backgrounds is developed. In this paper, two issues are addressed: the detection of human heads and the development of a head tracking system. First, based on an elliptical model for the human head, we propose a Maximum Likelihood (ML) detector to reliably locate human heads in images having complex backgroun...