MoonWalker, a Lower Limb Exoskeleton able to Sustain Bodyweight using a Passive Force Balancer

Abstract-This paper presents MoonWalker, a lower limb exoskeleton able to sustain part of a user's bodyweight. This orthosis can be used for rehabilitation, to help people having weak legs, or to help those suffering from a broken leg, to walk. It can also be used as an assistive device helping people carrying heavy loads. Its main characteristic is that a passive force balancer provides the force to sustain bodyweight. An actuator is also required, but is used only to shift that force the same side as the leg in stance. Consequently, MoonWalker requires very low energy to work on flat terrains. That motor can provide also a part of the energy to climb stairs or slopes. We believe that this approach can help improving energetic autonomy of lower limb exoskeletons

VOLTAGE-CONTROLLED SMALL SIGNAL ANALYSIS OF REAL SPACE TRANSFER TRANSISTOR

The research of determining the small signal equivalent circuit of the real space transfer (RST) transistor is investigated in this work. We propose a voltage-controlled mode model, called parameter extraction, to describe the performance of RST transistors at high frequency range. Besides, we also employ the value-determined model to simulate the microwave characteristics of RST and the theoretical and experimental results are compared. The influence of variables of RF performance is analyzed and theoretical results show that the cut-off frequency ( f T ) is mainly affected by the leakage resistances and the dimension of metal contact, but the maximum available gain frequency, f max , is dependent on contact resistances

INSUFFICIENCIES OF THE SINGLE EXPONENTIAL MODEL AND EFFICIENCY OF THE DOUBLE EXPONENTIAL MODEL IN TIlE OPTIMIZATION OF SOLAR CELLS EFFICIENCY

Single and double exponential models are confronted to determine the most adapted model for optimization of solar cells efficiency. It is shown that the single exponential model (SEM) presents some insufficiencies for efficiency optimization. The interest of the double exponential model to optimize the efficiency and to achieve an adequate simulation of the operation of solar cells is demonstrated by means of I-V characteristics plotting

Passive Creditors

Creditors are often passive because they are reluctant to show bad debts on their own balance sheets. We propose a simple general equilibrium model to study the externality effect of creditor passivity. The model yields rich insights in the phenomenon of creditor passivity, both in transition and developed market economies. Policy implications are deduced. The model also explains in what respect banks differ from enterprises and what this implies for policy. Commonly observed phenomenons in the banking sector, such as deposit insurance, lender of last resort facilities, government coordination to work out bad loans and special bank closure provisions, are interpreted in our framework.http://deepblue.lib.umich.edu/bitstream/2027.42/40123/3/wp737.pd

Occupant satisfaction in post-refurbishment of historic buildings : baroque case studies in Valletta, Malta

This paper evaluates occupants’ subjective response to controlled architectural interventions in listed historic buildings, as part of a comprehensive plan to restore, rehabilitate and re-use the edifice. The overall strategy was to monitor a series of historic buildings, which typically represent the same period, namely 16th century architecture, depicting the Baroque period in Malta’s World Heritage Capital, Valletta. Such buildings often had discrete traditional physical features, such as ventilation stacks through their thick massive walls and an open courtyard, generating the typical introvert planning. These assisted the acclimatisation of their indoor spaces. Interventions were limited to exposing their thermal mass and re-activating the original features. The buildings were partially assessed for their thermal performance through a post-occupancy survey (POS), based on subjective evidence. Questionnaires and structured interviews were conducted with office staff, two years after entering the commissioned refurbished buildings. Results indicated that the revival of modest passive design solutions was effective in attaining comfort levels today, thus reducing the dependence on energy guzzling modern environmental control systems. This suggests that such featurerevealing interventions can be easily adapted to other similar historic buildings offered for refurbishment, thus achieving energy efficiency all round, also reducing their overall carbon footprint.peer-reviewe

The Translation of English Passive Voice Into Indonesian

English and Indonesian have different grammatical patterns and cultural values. That is why, many problems that students studying translation subject have to face. One of them is how to translate English Passive Voice into Indonesian. That is the reason the writer aims to do the research. The research is to describe the translation of English passive voice into Indonesian by analyzing two novels, which are Kristan Higgins' Waiting on You and its translation Nina Andiana's Penantian Terpanjang. This research uses qualitative method. The writer collected, identified, the data concerning with the translation of English passive voice. The results of the research shows that there are two categories of translating English passive voice into Indonesian, namely English passive voice can be translated both into Indonesian passive voice and English passive voice can be translated into Indonesian active voice. English passive voice is translated into Indonesian passive voice by using prefixes di- and ter-, meanwhile English passive voice is translated into Indonesian active voice by using prefixes me-, men-, and ber-. From forty one data which are identified there are 32 data (78.04%) of English passive voices translated into Indonesian passive voices and 9 data (21.96%) of English passive voices translated into Indonesian active voices