Splitting of some s-domain stability-test algorithms

Some classic s-domain algorithms are first expressed in a unified form. From this, all possible split forms are then derived and classified. In particular, attention is focused on two families of algorithms, which include the standard Routh algorithm and an s-domain Levinson-like algorithm respectively. The related split forms are analysed and compared. Their complexity can be reduced by suitably choosing some scaling factors. It turns out that the usual form of the Routh algorithm, which is intrinsically split, and the simplified version of the split Levinson-like algorithm are substantially equivalent and superior to any other possible split algorithm.     

Distributed fiber optic monitoring of a CFA pile with a central reinforcement bar bundle

In this paper, we present an application of distributed fiber optic sensor (DFOS) technology to measure the strain of a continuous flight auger (CFA) test pile with a central reinforcement bar bundle, during a static load test carried out in London. Being distributed in nature, DFOS gives much more information about the pile performance as compared to traditional point sensors, such as identifying cross-sectional irregularities or other anomalies. The strain profiles recorded along the depth of the piles from the DFOS were used to calculate pile deformation (contraction), shaft friction, and tip resistance under various loads. Based on this pile load test, a finite element (FE) analysis was performed using a one-dimensional nonlinear load-transfer model. Calibrated by the shaft friction and tip resistance derived from the monitored data, the FE model was able to simulate the pile and soil performance during the load testing with good accuracy. The effect of the reinforcement cage and central reinforcement bar bundle were investigated, and it was found that the addition of a reinforcement cage would reduce the pile settlement by up to 20%.     

The New Production Model: Myth and Reality of the New Employment Relation

The paper presents a framework which connects the changing natureof the employment relation to the evolution of the labour-technologyrelationship whose terms both present a dual nature. The dualityof technology results from its being both a production and aninformation and coordination tool. In turn, the duality of labourarises from recognizing a double role for the workforce: asa supplier of standardized effort (job), and as a source ofcontinuous improvement of products and processes (work). Thepaper explores the conditions which allow an efficient transactionof work within the organization, and shows how the conceptualopposition between job and work proves to be useful for readingthe ‘successful’ shift to lean production modelsby Japanese and Western companies.     

"电路"试题库及试卷生成系统的研制

介绍了作者研制的“电路”试题库及试卷生成系统。该系统针对“电路”教学的特点,实现了由计算机辅助的、新的出卷方式,使“电路”教学有了更为客观的、考教分开的考核与评估方式。     

Towards a Knowledge-Based System for Seismic Assessment of Buildings

Aknowledge-based system, whose objectives are to support the procedures which lead to the seismic risk evaluation of buildings and to suggest possible retrofitting, is presented. The system architecture and its principal functions are described, with emphasis on the main part of the system: a model (“artificial world”) which describes the structure and possible behaviors of the building and its environment, at different definition levels, with qualitative and/or quantitative attributes.     

压电式多点触控技术的原理与优势分析

当前触控产业中有许多支持多点触控的技术,本文针对不同多点触控技术的原理做扼要说明,并详述压电式多点触控之原理,可看出矽创所推出的压电式多点触控兼顾了各种触控技术的优点,并弥补了电阻式和投射电容式触控技术许多先天的缺点,展现更佳的多点触控表现。     

EFFECT OF DIFFERENT STORAGE CONDITIONS ON THE LIPID FRACTION OF A VEGETABLE CREAM

Fatty acids (free and esterified), diglycerides, peroxides and total sterols were determined in a vegetable cream. Cream samples were analyzed when fresh and after storage for 3 and 6 months at 4, 15, 30C and room temperature (10–25C). The product showed a higher amount of unsaturated fatty acids ( ≈ 50% of total fatty acids) with respect to milk fat and a low level of cholesterol ( < 0.01%). The phytosterol content ( ≈ 14 mg/100 g of cream) was not high enough to contribute to a decrease in cholesterolemia. Lipid oxidation remained low during storage (peroxides: 2.0–3.0 meq O₂/kg of fat), but a small increase was observed at room temperature after 6 months (about 6.0 meq O₂/kg of fat). Free fatty acids never exceeded 0.3% of fat. Storage at 4C and 15C delayed lipolysis in comparison to storage at 30C and room temperature.

PRACTICAL APPLICATIONS

The analysis of a vegetable cream demonstrated that it was a shelf-stable product, showing a high stability toward lipid oxidation and lipolysis. Such a product might be employed as vehicle for healthy fat compounds like long-chain polyunsaturated fatty acids, phytosterols and fat-soluble vitamins.     

Computer-based Automation and the Governance of Vertical Transactions

The purpose of this paper is to analyse the impact of computer-basedproduction technologies on firms' choice of governance modefor vertical transactions. We argue that in the long run diffusionof the new technologies should lead to a wider use of arm'slength relationships with suppliers of increasingly standardizedintermediate goods. In the early stage of diffusion, however,vertical transactions should tend to be internalized under bierarcbicalcontrol. In any case, network configurations based on subcontractingare negatively affected. Evidence supporting these argumentsis provided through a ‘laboratory’ study of make-or-buydecisions made by 100 adopter firms in the Italian metalworkingindustry.