A generalization of the half logistic distribution is developed through exponentiation of its cumulative distribution function and termed the Type I Generalized Half Logistic Distribution (GHLD). GHLD's distributional characteristics and parameter estimation using maximum likelihood and modified maximum likelihood methods are presented with comparisons. Comparison of Type I GHLD and the exponential distribution is conducted via likelihood ratio criterion.

No abstract

Vegetables are defined as edible plant parts generally consumed raw or cooked with a main dish, in a mixed dish, as an appetizer or as a salad. Food safety aspects related to microbial quality (total plate count, yeast and mold and food borne pathogens) and toxic residue (heavy metals) and mineral content were investigated for vegetables such as green leafy vegetable, salad vegetables, sprouts, brinjal, green chilies and French beans collected from organic and conventional outlets from Mysore region, Karnataka, India. Microbial analysis was carried out using standard procedures and mminerals (Ca, K, Fe, Cu, Mg, Mn and Zn) and heavy metals (Cd and Pb) were determined. Significant variations (p>0.05) were observed for microbial quality among organic and conventional vegetables. Mineral and vitamin C content were also significantly higher (p>0.01) in organic samples. Heavy metal contamination for lead and cadmium tested positive for conventional samples while organic samples tested negative. The variables that contributed most for the variability were heavy metal contamination, mineral and vitamin C content. Organically grown vegetables were free from heavy metals and safe for consumption, as well as they are rich in mineral and vitamin C content in comparison to conventional samples. SAARC J. Agri., 18(1): 99-116 (2020)

Abstract-Prediction of water quality for drinking purpose is essential as water sources are becoming polluted rapidly. Conventional approaches for water quality prediction are (i) Assessment using Water Quality Index calculation, (ii) Assessment using Nemerow's Pollution Index. A third approach based on compliance of water quality parameters with respect to permissible values prescribed by IS 10500:2012 is also considered. Twenty five ground water samples, from Rajam town in Srikakulam district, are analyzed in laboratory for a specific set of parameters and are assessed for their suitability using the above three approaches. The water quality can be ranked as Poor using all the three approaches. Another set of twenty five treated drinking water samples are also analyzed and assessed using the above three models. The water quality in this case can be ranked as Excellent for drinking purpose indicating good treatment provided to the water.