Experimental and Numerical Analysis of a Novel Display Case Design: Case Study of the Renovated Anne Frank House

ABSTRACT

Many museums are housed in historic buildings, sometimes the building itself is part of the museum collection. Creating a stable environment by providing a nearly constant temperature and relative humidity at correct levels decreases the risk of object degradation. Maintaining this steady indoor environment, however, increases energy consumption and risks to the historic building. Museum display cases offer a solution to the mitigation of risks to which valuable objects may be subjected by providing an extra layer of protection to indoor climate fluctuations. The Anne Frank House is a historic house museum located in Amsterdam. The museum has undergone several renovations in the last years to deal with an increase in the number of visitors to over 1.2 million a year. The original diaries and other documents of Anne Frank are permanently on display in the Anne Frank House. With the recent refurbishment the possibility arose to design a new state-of-the-art display case. This study presents the results of the experimental research related to the design, performed in-situ. The temperature and relative humidity in the new exhibition space and inside the new display cases were monitored to gain insight into the hygrothermal behavior of these controlled environments. A complementary numerical study was performed to investigate effects of dynamic climate control of the exhibition gallery and climate conditions in the display case under various circumstances. Four main conclusions are presented in this paper. The investigated display case design is able to provide a stable relative humidity environment by means of silica gel, while using an active box-in-box climate control system to create stable temperature conditions. The inner case temperature depends on the temperature supplied by the display case air handling unit. Protocols must be in place in case of malfunction or failure of the climate control system of the display case. The air handling unit of the case needs to be shut off to create a passive environment for the objects on display until necessary actions are taken. Exhibition gallery set points can be less stringent when susceptible museum objects are on display in the display case. The environments are separated and provide an opportunity for energy saving set point strategies. The last conclusion drawn is that the numerical study provides valuable insight into imposing dynamic control of set points for temperature and relative humidity in the exhibition gallery and the effect on the display case environment.     

Reference power values for the jump squat exercise in elite athletes: A multicenter study

ABSTRACT

The present study aimed to provide reference values for lower-limb muscle power assessed during the incremental jump squat (JS) test in elite athletes (i.e., professional athletes competing at international level). We pooled data from all JS tests performed by elite athletes of different sports in two high-performance centres between 2015 and 2019, and computed reference values (i.e., terciles) for mean power (MP), mean propulsive power (MPP), and peak power (PP). Reference values were obtained from 684 elite athletes (458 male and 226 female) of 16 different sports (boxing, judo, karate, fencing, taekwondo, wrestling, basketball, soccer, futsal, handball, rugby union, badminton, tennis, long distance running, triathlon, and sprinting). Significant differences (p < 0.001) were found between male and female athletes for MP (7.47 ± 1.93 and 6.15 ± 1.68 W·Kg^?1, respectively), MPP (10.50 ± 2.75 and 8.63 ± 2.43 W·Kg^?1), and PP (23.64 ± 6.12 and 19.35 ± 5.49 W·Kg^?1). However, the velocity at which these power measures was attained seemed to be independent of sex (~0.95, 1.00 and 2.00 m·s^?1 for mean, mean propulsive, and peak velocity, respectively) and homogeneous across different sport disciplines (coefficient of variation <10%). These data can be used to classify athletes’ power capabilities, and the optimum velocity ranges provided here could be useful for training purposes.     

Contextual Barriers to School Reform in Spain

Over the past two decades, the Spanish educational system has undergone various legal reforms. However, judging by the low educational performance of Spanish students as reported by the OECD for the year 2001, it seems that additional reforms are necessary. Several factors may account for the failure of previous reforms to attain the desired results. These include: (a) educators' low expectations that further reforms will succeed, (b) lack of financial resources, (c) institutional lack of commitment to implement the structural and administrative changes called for and (d) the adoption of questionable theoretical models for making appropriate structural, curricular and educational decisions. This essay presents some suggestions for implementing a reform program that would bring about substantial changes in these areas.     

The Public Library System as an Element in the 2007 and 2015 Electoral Programs of Spain's Political Parties in the Region of Castilla-La Mancha

To assess the relevance of the Public Library System in the political agenda, programs presented by the Political Parties competing in Regional and Local elections in the Spanish Region of Castilla-La Mancha were analyzed and the proposals about these library institutions were identified.

All Regional programs were collected and also an ample sample from the Municipalities for the 2007 and 2015 elections, trying to find the differences influenced by the impact of the financial crisis and recession on the public-library policies.

The conclusion arrived at was that, although the Public Libraries may be reasonably present in the studied programs, there is a low awareness by the Political Parties of the main problems.     

Blind spot detection using vision for automotive applications

This paper describes a vision-based system for blind spot detection （BSD） in intelligent vehicle applications. A camera is mounted in the lateral mirror of a car with the intention of visually detecting cars that are located in the so-called blind spot and cannot be perceived by the vehicle driver. The detection of cars in the blind spot is carried out using computer vision techniques, based on optical flow and a double-stage data clustering technique for robust vehicle detection.     

Child labour and educational success in Portugal

The current debate on child labour focuses on developing countries. However, Portugal is an example of a relatively developed country where child labour is still a matter of concern as between 8% and 12% of Portuguese children may be classified as workers. This paper studies the patterns of child labour in Portugal and assesses the consequences of working on the educational success of Portuguese children. The analysis controls for typically unobserved attributes such as a child's interest in school and educational ambitions and uses geographical variation in policies designed to tackle child labour and in labour inspection regimes to instrument child labour. We find that economic work hinders educational success, while domestic work does not appear to be harmful. Furthermore, after controlling for a host of socio-economic variables, factors such as a child's interest in school and educational ambitions have a large effect on boosting educational success and reducing economic work.     

Flounders unlimited

The aim of this paper is to provide an introduction to higher mathematical concepts and techniques as applied to real-world problems. An interesting case study is the 200-mile limit for fisheries presented in Wan (1989, Mathematical Models and their Analysis (New York: Harper and Row)). It is commented upon, re-examined and solved in a different manner inspired by Turing's (1952, Philosophical Transactions of the Royal Society London , B237 , 37-72) paper as a suitable classroom example for undergraduate students taking a first course on mathematical modelling. Emphasis is made not only on the mathematics--always kept as elementary as possible--but also on interpretations, explanations and translation into plain language of the mathematical expressions and results.     

Contents Vol. 1

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Contents Vol. 1