Evolution of National Space Policy as Predominantly Implicit Policy: India, an Intrinsic Case Study

India,despite being a leading space-faring nation,and operating one of the six largest space programmes in the world,has developed little in terms of expressly documented national space policy over its 58-year history of space activity-besides two standalone policy documents primarily designed to address some operational policy issues pertaining to satellite communication services and use of remote sensing data.However,the Indian space programme,given its phenomenal technological advancements and operational maturity achieved over the decades,clearly exhibits evidence of having been continually and consistently guided,since its very inception,by a cohesive and consistent policy so far as its directional and strategic policy aspects are concerned.In other words,there does exist an apparent undeclared policy embedded in the Indian space establishment that has continued to inform and guide its strategic decisions and actions.The objective of the present case-study is to systematically describe the evolution of the national space policy of India,predominantly as implicit policy,as reflected by the key decisions and actions of the Indian national space establishment since beginning of the Indian space programme.This analysis strives to identify the directional and the strategic elements of policy as reflected by the decisions and actions of the space establishment,and the socio-economic,technological,political and institutional factors that have influenced such policies.

CASC Vice President Attended 27th US National Space Symposium

A Chinese space delegation led by Lei Fanpei, Vice President of China Aerospace Science and Technology Corporation (CASC),

Research on cognitive load evaluation with subjective method in manual assembly

Subjective scales have different kinds of applicability in diverse fields.This study intends to implement a quantitative approach to determine the applicability of subjective scales in manual as-sembly work and evaluate the cognitive load of assembly workers.A multi-scale research paradigm based on subjective evaluation method is proposed.Three typical task stages are extracted from the process of assembly work.The National Aeronautics and Space Administration Task Load Index(NASA-TLX)scale,PAAS scale and Workload Profile Index Ratings(WP)scale are selected for the design of 3×3 multi-factor mixed experiment.The power spectrum density(PSD)characteris-tics of electroencephalogram(EEG)are utilized to identify the difficulty levels of the three task sta-ges.The relevant indicators of scale applicability are assessed.The results show that in terms of sensitivity,NASA-TLX scale reaches the highest sensitivity(F=999.137,P=0<0.05).In terms of validity,NASA-TLX scale possesses the best concurrent validity(P=0.0255<0.05).In terms of diagnosticity,NASA-TLX scale based on 6 dimensions takes on the best diagnostic performance.In terms of subject acceptability,WP scale performs the worst.According to the analytic hierarchy process(AHP)model,the applicability scores of NASA-TLX scale,PAAS scale and WP scale are determined as 3,2.55 and 1.6714,respectively.Therefore,NASA-TLX scale is regarded as the most suitable subjective evaluation questionnaire for assembly workers,which is also an effective quantitative evaluation method for the cognitive load of assembly workers.