QUES: Lossy data compression is the converse of lossless data compression. In these schemes, some loss of information is acceptable. Dropping nonessential detail from the data source can save storage space. Lossy data compression schemes are designed by research on how people perceive the data in question. For example, the human eye is more sensitive to subtle variations in luminance than it is to the variations in color. JPEG image compression works in part by rounding off nonessential bits of information. There is a corresponding trade-off between preserving information and reducing size. A number of popular compression formats exploit these perceptual differences, including those used in music files, images, and video.

What can save storage space?
What is the answer?
ANS: Dropping nonessential detail from the data source
QUES: Nevertheless, Makdisi has asserted that the European university borrowed many of its features from the Islamic madrasa, including the concepts of a degree and doctorate. Makdisi and Hugh Goddard have also highlighted other terms and concepts now used in modern universities which most likely have Islamic origins, including "the fact that we still talk of professors holding the 'Chair' of their subject" being based on the "traditional Islamic pattern of teaching where the professor sits on a chair and the students sit around him", the term 'academic circles' being derived from the way in which Islamic students "sat in a circle around their professor", and terms such as "having 'fellows', 'reading' a subject, and obtaining 'degrees', can all be traced back" to the Islamic concepts of aṣḥāb ('companions, as of Muhammad'), qirāʼah ('reading aloud the Qur'an') and ijāzah ('licence [to teach]') respectively. Makdisi has listed eighteen such parallels in terminology which can be traced back to their roots in Islamic education. Some of the practices now common in modern universities which Makdisi and Goddard trace back to an Islamic root include "practices such as delivering inaugural lectures, wearing academic robes, obtaining doctorates by defending a thesis, and even the idea of academic freedom are also modelled on Islamic custom." The Islamic scholarly system of fatwá and ijmāʻ, meaning opinion and consensus respectively, formed the basis of the "scholarly system the West has practised in university scholarship from the Middle Ages down to the present day." According to Makdisi and Goddard, "the idea of academic freedom" in universities was also "modelled on Islamic custom" as practised in the medieval Madrasa system from the 9th century. Islamic influence was "certainly discernible in the foundation of the first deliberately planned university" in Europe, the University of Naples Federico II founded by Frederick II, Holy Roman Emperor in 1224.

What clothing practice did Makdisi believe European schools did not learn from madaris?
What is the answer?
ANS: unanswerable
QUES: In March 1984, Pioneer introduced the first consumer player with a solid-state laser, the LD-700. It was also the first LD player to load from the front and not the top. One year earlier Hitachi introduced an expensive industrial player with a laser diode, but the player, which had poor picture quality due to an inadequate dropout compensator, was made only in limited quantities. After Pioneer released the LD-700, gas lasers were no longer used in consumer players, despite their advantages, although Philips continued to use gas lasers in their industrial units until 1985.

Which company continued to use gas-lasers in industrial models of LD players although they were no longer used in consumer models?
What is the answer?
ANS:
Philips