51,696 research outputs found

    Strengthening Employment-Based Pensions in Japan

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    We investigate how the Japanese pension market for funded employment-based pensions is changing and how it might be strengthened in order to better serve one of the most rapidly aging populations in the world. Public and private pensions in Japan are estimated to hold around US$3 trillion, making that system the second largest globally after the United States. However, unfavorable economic developments have cut sharply cut into asset values, and the weak economy is undermining traditional lifetime employment contracts. Recent legislation permitting the establishment of defined contribution plans in Japan may provide new employer-sponsored retirement plan opportunities. We first describe the Japanese pension system at the end of the 20th century and provide an overview and evaluation of the changes in the pension arena emerging from the 2001 legislation. Next we show that important design questions remain to be answered, if Japanese employment-based pensions are to be reformed and modernized. Finally we indicate lessons gleaned from recent changes in US pension plans.

    Design concepts for low-cost composite turbofan engine frame

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    Design concepts for low cost, lightweight composite engine frames were applied to the design requirements for the frame of a commercial, high bypass engine. Four alternative composite frame design concepts identified which consisted of generic type components and subcomponents that could be adapted to use in different locations in the engine and the different engine sizes. A variety of materials and manufacturing methods were projected with a goal for the lowest number of parts at the lowest possible cost. After a preliminary evaluation of all four frame concepts, two designs were selected for an extended design and evaluation which narrowed the final selection down to one frame that was significantly lower in cost and slighty lighter than the other frame. An implementation plan for this lowest cost frame is projected for future development and includes prospects for reducing its weight with proposed unproven, innovative fabrication techniques

    Optimization of controlled environments for hydroponic production of leaf lettuce for human life support in CELSS

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    A research project in the food production group of the Closed Ecological Life Support System (CELSS) program sought to define optimum conditions for photosynthetic productivity of a higher plant food crop. The effects of radiation and various atmospheric compositions were studied

    Retirement Research Using the Health and Retirement Survey

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    This paper highlights unanswered research questions in the economics of retirement, and shows how these issues can be addressed using the new Health and Retirement Survey (HRS). Unique features of the survey are described including administrative records on earnings and social security benefits, and employer provided data on pensions and health insurance. Also collected are indicators of retirement plans, health status, family structure, income, wealth and employer policies affecting job opportunities and constraints. Data from the first wave of the HRS are used to analyze retirement outcomes and constraints shaping retirement behavior.

    Middle atmosphere measurements of small-scale electron density irregularities and ion properties during the MAC/Epsilon campaign

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    Rocket payloads designed to measure small scale electron density irregularities and ion properties in the middle atmosphere were flown with each of the three main salvos of the MAC/Epsilon campaign conducted at the Andoya Rocket Range, Norway, during October to November 1987. Fixed bias, hemispheric nose tip probes measured small scale electron density irregularities, indicative of neutral air turbulence, during the rocket's ascent; and subsequently, parachute-borne Gerdien condensers measured the region's polar electrical conductivity, ion mobility and density. One rocket was launched during daylight (October 15, 1052:20 UT), and the other two launches occurred at night (October 21, 2134 UT: November 12, 0021:40 UT) under moderately disturbed conditions which enhanced the detection and measurement of turbulence structures. A preliminary analysis of the real time data displays indicates the presence of small scale electron density irregularities in the altitude range of 60 to 90 km. Ongoing data reduction will determine turbulence parameters and also the region's electrical properties below 90 km

    A case study of argumentation at undergraduate level in history

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    This article examines two essays by undergraduate students in the first year of study in History at a university in the UK. It also draws on documentary evidence from the department in question and interviews with the students themselves to paint a picture of the way argumentation operates at this level. While no firm conclusions can be drawn, the evidence suggests a department with a high degree of awareness of the importance of argument and argumentation in studying History; and students who are aware and articulate about the problem facing them in constructing essays in the discipline. Suggestions are made about induction into the epistemological and argumentative demands of undergraduate study

    Early CRT monitoring using time-domain optical coherence tomography does not add to visual acuity for predicting visual loss in patients with central retinal vein occlusion treated with intravitreal ranibizumab:A secondary analysis of trial data

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    Our primary purpose was to assess the clinical (predictive) validity of central retinal thickness (CRT) and best corrected visual acuity (BCVA) at 1 week and 1 month after starting treatment with ranibizumab for central retinal vein occlusion. The authors also assessed detectability of response to treatment
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