title: The opportunities and risks of the 20 Minute City

authors: White, Iain

abstract: "20 Minute City" is a political project, not just a policy one. Success is not just about ‘the plan’ and implementation is   not just about policy.

text: The opportunities and risks of the 20 Minute City "20 Minute City" is a political project, not just a policy one. Success is not just about ‘the plan’ and implementation is   not just about policy.

year: 2021-03-30

title: Bipolar amplifier bias technique for robust IM3 null tracking independent of internal emitter resistance

authors: Balsom, Toby

abstract: Bipolar amplifiers can be biased to give a deep null in third order non-linearity, with the potential for high IP3 amplifier stages. This requires maintaining a precise voltage drop across a small resistive emitter degeneration resistance, whose value is related to kT/q. To make such a scheme practical, the bias must not only take into account the change in kT/q with temperature, but must compensate for variations in the degeneration resistance. In this paper we present a bias technique for IM3 null tracking that can take account of temperature and resistance tolerances, and is also insensitive to the value of the internal emitter resistance. Simulations using a 27 GHz BiCMOS technology indicate that the bias of an amplifier can be maintained over temperature, representative element tolerances, and mismatch such that the IP3 performance is maintained within ±9.5 dBV of the optimum null condition. The technique is applicable for a range of bipolar BiCMOS technologies and is attractive for amplifiers where high IP3 is required with moderate noise figure.

text: Bipolar amplifier bias technique for robust IM3 null tracking independent of internal emitter resistance Bipolar amplifiers can be biased to give a deep null in third order non-linearity, with the potential for high IP3 amplifier stages. This requires maintaining a precise voltage drop across a small resistive emitter degeneration resistance, whose value is related to kT/q. To make such a scheme practical, the bias must not only take into account the change in kT/q with temperature, but must compensate for variations in the degeneration resistance. In this paper we present a bias technique for IM3 null tracking that can take account of temperature and resistance tolerances, and is also insensitive to the value of the internal emitter resistance. Simulations using a 27 GHz BiCMOS technology indicate that the bias of an amplifier can be maintained over temperature, representative element tolerances, and mismatch such that the IP3 performance is maintained within ±9.5 dBV of the optimum null condition. The technique is applicable for a range of bipolar BiCMOS technologies and is attractive for amplifiers where high IP3 is required with moderate noise figure.

year: 2012

title: The sociocultural impact of tourism on the Te Arawa people of Rotorua, New Zealand

authors: Te Awekotuku, Ngahuia

subjects: Te Arawa

abstract: This is a study of how tourism in New Zealand has affected a major tribal community; their insights, reactions, and experiences. Covering five generations, it presents an oral account of the actively concerned social groups. Wherever possible, or necessary, this is reiterated and reinforced by the written record.

The work comprises two parts, the first which outlines the historic background according to available documentation, and the second which focusses on particular aspects of tribal culture and experience. Material for this section, otherwise unrecorded, came from the narrated stories, reminiscences, and often shrewd observations of the people themselves. It deals with residential community, song and dance, arts and crafts, and the role of women.

As an essentially ethnographic commentary, the study does not examine the economic features or effects of tourism, except where fiscal factors are pertinent to the understanding or continuity of the Te Arawa experience of the tourist world.

text: The sociocultural impact of tourism on the Te Arawa people of Rotorua, New Zealand This is a study of how tourism in New Zealand has affected a major tribal community; their insights, reactions, and experiences. Covering five generations, it presents an oral account of the actively concerned social groups. Wherever possible, or necessary, this is reiterated and reinforced by the written record.

The work comprises two parts, the first which outlines the historic background according to available documentation, and the second which focusses on particular aspects of tribal culture and experience. Material for this section, otherwise unrecorded, came from the narrated stories, reminiscences, and often shrewd observations of the people themselves. It deals with residential community, song and dance, arts and crafts, and the role of women.

As an essentially ethnographic commentary, the study does not examine the economic features or effects of tourism, except where fiscal factors are pertinent to the understanding or continuity of the Te Arawa experience of the tourist world.

year: 1981