Ranking of software engineering metrics by fuzzy‐based matrix methodology

This research paper presents a framework for ranking of software engineering metrics based on expert opinion elicitation and fuzzy‐based matrix methodology. The proposed methodology is able to accommodate the imprecise and inexact data involved in the problem of ranking of software engineering metrics, vagueness and ambiguity occurring during expert (human) decision making and to depart from the complexity of formulation of the objective and the constraint function. The matrices lend themselves to mechanical manipulations and are useful for analyzing and deriving systems functions expeditiously to meet the objectives. The current research is based on software engineering metrics identified in an earlier study conducted by Lawrence Livermore National Laboratory. A set of ranking criteria were identified. Software engineering metrics are then ranked in ascending order using experts' opinion in accordance with the value of Permanent function on their criteria matrix. The proposed methodology has also been compared with other known methodologies. Copyright © 2011 John Wiley & Sons, Ltd.     

Comparative study of dielectric properties of K2ZnCl4 and K2Zn1−xFexCl4 in the vicinity of incommensurate-commensurate phase transition

Abstracts are not published in this journal This revised version was published online in November 2006 with corrections to the Cover Date.     

THERMAL CONDUCTIVITY of INDIAN UNLEAVENED FLAT BREAD (CHAPATI) AT VARIOUS STAGES of BAKING

A steady state technique was used to measure thermal conductivity of whole wheat dough (rolled chapati) and baked chapati (round disc prepared mostly from whole wheat flour dough) at various stages of cooking. Based on the experimental data of chapati at various stages of cooking, a linear equation K = -0.5677 + 0.01396 M + 0.005131 T is proposed for conductivity of wheat flour dough and baked chapati at moisture levels (M): 35 < M < 50 and temperature ranges 35 < T < 60 A separate equation K = 0.3204 + 0.0091 M -0.00805 T predicts thermal conductivity of rolled chapati and baked chapati at T > 60C.     

Studies on the interaction of p-phenylene diamine with phospholipids

In vitro studies on the interaction of phospholipids with p-phenylene diamine, a major component of hair dyes, were undertaken. Thin layer and molecular sieving chromatography along with phosphorus estimation and spectral characterization suggested the possibility of p-phenylene diamine and its biotransformation products combining with lipophilic biomolecules.     

Effect of infrared pretreatment on low-humidity air drying of apple slices

The dried apple is used in the preparation of weaning foods and bakery products. The current drying processes, especially hot air (HA) drying, still face the problem of longer processing time and product quality degradation. The low-humidity air (LHA) drying can be an option to retain product quality in heat-sensitive food such as apple. The present work focuses on the effect of pretreatment of apple slices with potassium metabisulfite and infrared (IR) waves on drying characteristics when subjected to LHA drying and comparing the product quality with conventional hot air and freeze drying (FD). Pretreatment with IR waves reduced the drying time by nearly 23 and 17% in LHA and HA drying, respectively. The results indicated that IR-treated and LHA-dried slices retained nearly 82–90 and 72–74% of ascorbic acid and total phenolic content, respectively and was comparable to FD slices. The drying time for LHA was nearly 37% lesser than that for HA drying. LHA-dried apple slices had better color and rehydration ratio compared to FD- and HA-dried slices.     

采用粉末冶金技术制备的空心微珠分散钛基复合材料的表征及磨损性能(英文)

采用粉末冶金技术制备空心微珠分散的钛基复合材料,并对其磨损和腐蚀行为进行研究。结果表明,所制备的复合材料组织中在α-Ti基体中分散有平均孔径为50~150μm的空心微珠。复合材料的多孔性归因于压制过程中载荷对空心微珠颗粒的破坏及空心微珠本身的空心特性。X射线衍射分析表明复合材料由Al2O3、SiO2、TiO2和α-Ti相组成。基体钛合金的显微硬度为HV 240,而复合材料的显微硬度在HV 1100~HV 1800范围内变化。磨损实验表明,相对于商用Ti-6Al-4V合金,复合材料对硬化钢球和WC球的抗磨损性能得到显著增强。复合材料在3.56%NaCl(质量分数)溶液中的腐蚀行为表明,其耐点蚀性能改善,腐蚀电位向正(更高)方向移动。然而,与商用Ti-6Al-4V合金相比,空心微珠分散钛合金的腐蚀速率增大。