997 resultados para 1970s-1990s, ethics, feminism, pedagogy, pornography


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This article gives an account of my experiences as a student and teacher of pornography in the UK university context. From my time as a student at Glasgow University in the late 1970s, to my classes on sexual transgression at Strathclyde in the 2000s, I trace changing attitudes to the pornographic, against the background of changing political and technological environments. The article considers the pedagogy of porn against the backdrop of pro- and anti-porn feminism, the rise of gay rights, and the impact of the internet. Under these influences, and over a period of three decades, pornography was destigmatized and redefined in a variety of contexts, from the irony of lad culture to the postmodern humour of the Graham Norton Show and the pro-porn feminism of the post-Madonna era.

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This article examines ethics in work organization and in academic, particularly Critical Management Studies, research. It is centred on empirical data exploring the actions of three employees of a higher education institution who variously failed to resist and/or colluded in the sex discrimination of a colleague.We bring ethics to bear in our analysis of these data in three ways. First, reflecting upon our own methodology, we highlight the difficulties of balancing competing ethical responsibilities when engaging in critical research in contexts defined by adversarial relationships. Second, we highlight how research subjects, who we interpret as exercising problematic agency, draw upon discourses of care, friendship and responsibility to discursively construct their behaviour as moral. Third, drawing upon feminist theory, we reflect upon the ethical warrant of academic critiques of research subjects’ agency. Our analysis raises unsettling implications both for the ethics of Critical Management Studies research and for the function of ethics in organizations.We end by being as concerned by the capacity of ethical discourse to enable and legitimize discrimination as we are reassured by its utility to enable us to discriminate right from wrong behaviour in organizations.

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"Reprinted from November, 1913, Education."

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玉米(Zea mays L.)是我国十分重要粮食、饲料和工业原料作物,种植区域覆盖我国大部分农业区。随着玉米品种改良和新栽培技术的应用,我国玉米产量大幅度增加。自1950s以来,我国玉米产量递增幅度为126kg/hm2/yr。在玉米产量提高过程中,单叶光合作用与产量之间存在什么样的关系?当代玉米品种的品质和养分利用效率如何?高密度种植条件下是否存在“根系拥挤”及如何调控等。为探讨上述科学问题,本研究选择中国北方常见的大田玉米品种,在高肥力自然光照条件下,探讨玉米高产优质栽培过程中生理生态特征的变化趋势,以指导科学育种和栽培。主要研究结果如下:   1)光合与产量的演变我国 1950s、1970s、1990s等不同年代推广的玉米品种中,当代品种叶片光合速率高且高值持续期长,光合色素叶绿素a、叶绿素b、类胡萝卜素等的含量高且持续时间长,与光合有关的蒸腾速率(E.)、细胞间隙CO2浓度(Ci.)、气孔导度(gs)等也有较大改良,中下部叶片尤其明显;在生育后期,当代品种具有更高的光合优势。老品种饱和光合速率(Psat)在灌浆期下降,并非RuBPCase 和PEPCase的活性降低,而是由于叶绿素含量和可溶性蛋白含量的降低。在花后期间,由于PS2功能的下降,造成了光合能力下降,而现代品种的PS2 功能在衰老前一致保持旺盛状态。   老品种光合特征对缺氮的反应表现更敏感。花后缺氮光合作用下降是非气孔限制的,因为气孔导度和胞间CO2浓度没有发生明显的变化。其主要原因是缺素造成老品种叶片早衰,叶绿素含量、可溶性蛋白含量、PEP羧化酶活性下降。现代品种表现较强的抗衰老能力,其N素利用效用高于老品种。我国玉米产量的大幅度提高在很大程度上应归功于叶片光合性能的改良。   随玉米品种更替,群体光合速率增强,群体光合衰减率降低,呼吸消耗所占总光合的百分率下降。灌浆期当代品种中下部叶片的群体光合速率明显高于老品种。种植密度是影响玉米群体光合速率的主要因素,在高中低三种密度条件下,当代品种均有较高的群体光合速率,表现出耐密性强、适应性广、源足库大、产量高的特点。   2)高油玉米的产量受到叶源大小和叶源活力的双重限制在 1.5 株/m2密度下,与普通玉米相比较,高油玉米单株籽粒产量显著低于普通玉米,产量构成中穗粒数差异不显著,千粒重较低(P<0.01);两类型玉米的单株库容量相当,高油玉米籽粒灌浆速率小,籽粒充实度低,单粒重对叶源相对减少(剪叶)或相对增多(疏库)的反应比普通玉米更为敏感,其产量受到同化产物供应(叶源)相对不足的限制。高油玉米授粉后的叶面积、叶面积持续期小,叶片含氮量和光合速率较低,说明高油玉米的产量受到叶源活力(光合速率)小和叶源数量少的双重限制。   3)我国北方玉米品种的个体产量潜力、氮素利用效率及籽粒与秸秆粗蛋白质含量在充分发挥个体生产潜力的低密度条件下,我国北方1990s 以来大面积种植的50个玉米主栽品种中,个体产量潜力和氮素利用效率高度正相关(P=0.01),而子粒千粒重与NUE 呈显著性负相关(P=0.002)。对玉米产量和氮素利用效率进行分层聚类,可将北方玉米品种划分为高产高NUE 型、低产低NUE 型和中间型,高产高NUE 型玉米品种相对较少,仅占24%。籽粒粗蛋白质含量(CPC)与秸秆CPC 相关性不显著(P>0.05)。对籽粒和秸秆的CPC 进行分层聚类,将北方玉米品种划分为籽粒高秸秆低型、籽粒与秸秆双低型和籽粒与秸秆双高型,CPC 双高型品种相对较少,仅占20%。   4)玉米根系拥挤效应对产量影响的生理生态机制及其调控随玉米品种更替根系的空间分布呈“横向紧缩,纵向延伸”的特点。当代三类型玉米根系分布特性与株型、穗型相关。紧凑型品种根系分布深,下层根系所占比率大,适合密植,群体产量潜力大;平展大穗型品种根量多,分布较浅,在低密度下可获得较高的个体生产力,但不适合密植,群体产量潜力小。   “根系拥挤”显著影响玉米产量,减小根系横向伸展空间,下层土壤中的根系分配比率增多。在地上部充分生长条件下,紧凑型品种横向空间为30-50cm即可满足要求,平展型品种大于50cm;紧凑型品种对纵向空间受限制的反应更为敏感,平展型品种对横向空间受限制的反应更为敏感。“根系拥挤”影响根系活性、分布、氮素吸收利用和花后光合与14C同化物的分配。   在根系受限制条件下,增施肥料产量提高,根系总重增加,增加了根系在深层土壤(60-100cm)中的根系比率,显著增加了根系的TTC 还原量、SOD、CAT、POD活性。土壤加沙,根量减少,但根系TTC 还原量增加、产量提高,提高幅度以大穗型品种更为显著。   随种植密度增加耕层根系密度与群体产量同步增大,各类品种均在最高根系密度下获得最高产量。根系负荷的籽粒产量潜力三类型品种存在极大差异,在一定范围内增大种植密度,根系伸展空间减小,群体产量提高,紧凑大穗型品种产量最高,品种的耐密性是限制根系负荷籽粒产量潜力的主导因素。因此,培育株型紧凑、耐密性强、大穗玉米良种,采取有效的调控措施是玉米进一步高产的主攻方向。   5)我国夏玉米高产田的培创理论研究与实践相结合,2005 年在我国华北地区的山东莱州培创出籽粒实产21 042.9kg/hm2 ( 14% 含水量, 实收面积=45.7m×15.9m=726.63m2)的夏玉米高产纪录。主要采用以增加密度为保障的“群体结构性挖潜”和以提高整齐度为保障的“个体功能性挖潜”途径,生理生态指标包括:选用紧凑抗倒耐密植品种DH3719,种植密度102 030 株/hm2,收获密度98 610 株/hm2,花后具有较长的叶面积高值持续期,达60d以上,叶面积指数最大为6.53,收获2.59。上部叶片光合值对外界光强度变化敏感,其光合峰值出现时间提前,而后迅速衰减;中部叶片光合值的降低较慢,下部叶片变幅最小,可能是长期处于争光环境表现出的生态适应性。粒叶比0.32,经济系数0.542,单株产量216g,千粒重375.1g。

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This paper addresses the recent (1970s-1990s) processes of river mouth bar formation, riverbed aggradation and distributary migration in the Huanghe River mouth area, in the light of station-based monitoring, field measurements and remote sensing interpretation. The results show that the morphological changes of the river mouth bar have been closely associated with the largely reduced fluvial discharge and sediment load. Landforrn development such as bar progradation occurred in two phases, i.e. before and after 1989, which correspond to faster and lower bar growth rates, respectively. Fast riverbed aggradation in the mouth channel was strongly related to river mouth bar progradation. During 1976-1996, about 2.8% of the total sediment loads were deposited in the river channel on the upper to middle delta. Therefore, the river water level rose by a few meters from 1984 to 1996. The frequent distributary channel migration, which switched the radial channel pattern into the SE-directed pattern in the mid-1980s, was linked with mouth bar formation. Marine conditions also constrain seaward bar progradation. Furthermore, the history of river mouth bar formation reflects human impacts, such as dredging and dyking in order to stabilize the coastal area. (c) 2005 Elsevier B.V. All rights reserved.

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The present study has a threefold aim: First, the theoretical aim is to give a contribution to refinement of the theory of dialogue based feminist ethics, concerning the understanding of judgment and narration within such an ethics.  The study also has an empirical aim, defined as to clarify what kind of knowledge, relevant to the moral judgment of an engaged outsider actor, can be received from dialogical interpretation and analysis of a limited selection of critically reflecting life stories. Third, a methodological aim is defined as to develop an approach to interpretation and analysis of reflecting life stories, which renders the storyteller visible as a reflecting moral subject, and makes the story accessible as a source of knowledge for the moral judgment of an engaged outsider actor. The thesis combines philosophical reflection and argumentation, with a narrative-hermeneutic method for interpretation of life stories, relating the two to each other in a hermeneutic process.  The theoretical reflection draws on Seyla Benhabibs theory of communicative ethics. A dialogue based model for moral justification and a likewise dialogue based model for political legitimacy are at the heart of this universalistic theory, although in combination with a conception of a narratively and hermeneutically constituted context sensitive moral judgment, based on Hannah Arendt’s concept “enlarged thought”. In the reflection, this model is related to other feminist theorizing within the tradition of dialogue based feminist ethics, as found in the works of Iris M. Young, Georgia Warnke and Shari Stone-Mediatore. The empirical study draws on three critically reflecting life stories from Israeli-Palestinian women activists for a just peace. The methodology for interpretation and analysis that is worked out combines dialogical interpretation as presented in Arthur W. Frank’s socio-narratology with a method for structural analysis derived from Shari Stone-Mediatores theory of storytelling as an expression of political resistance struggle. The results show that some stories drawing on marginalized experiences have a potential­ to stimulate further public debate through their capacity to enable a stereoscopic seeing, elucidating a tension between ideologically structured discourse and non-linguistic experience; implying that narrative-hermeneutic competence should be considered crucial for public debate.  

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General note: Title and date provided by Bettye Lane.

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General note: Title and date provided by Bettye Lane.

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This thoughtful book is a much needed contribution to feminist ethics that is brimming with detailed and insightful analyses of the positioning of women in contemporary health care and particularly in relation to new reproductive technologies (NRTs). The clearly written and structured chapters provide accessible points to modern ethics, post-modernism, and feminist ethics. Margrit Shildrick takes on these areas with authority and vigour, building an argument for women to enter the relations of reproduction on terms more expressive of feminine desire...

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This article addresses issues of methodology and ethical reflexivity when attempting to investigate the opinions of young people. Drawing specifically on three studies of young people's understandings of citizenship and their views on topical issues, two from England and one from Lebanon, the authors present ways in which the ethical and practical challenges of such research can be met. While acknowledging the power relationship between researchers and informants, they suggest that what they call ‘pedagogical research approaches’ built on a participative methodology can open up a space where both parties benefit. They argue that, when working in schools, teacher educators can take advantage of this status to present themselves simultaneously as insiders and outsiders. The authors have devised what are intended to be non-exploitative research instruments that permit the gathering of useful qualitative data during a short encounter. They illustrate their approach with examples of classroom activities they have developed to provide simultaneously a valid learning experience and usable data.

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Identifying predictability and the corresponding sources for the western North Pacific (WNP) summer climate in the case of non-stationary teleconnections during recent decades benefits for further improvements of long-range prediction on the WNP and East Asian summers. In the past few decades, pronounced increases on the summer sea surface temperature (SST) and associated interannual variability are observed over the tropical Indian Ocean and eastern Pacific around the late 1970s and over the Maritime Continent and western–central Pacific around the early 1990s. These increases are associated with significant enhancements of the interannual variability for the lower-tropospheric wind over the WNP. In this study, we further assess interdecadal changes on the seasonal prediction of the WNP summer anomalies, using May-start retrospective forecasts from the ENSEMBLES multi-model project in the period 1960–2005. It is found that prediction of the WNP summer anomalies exhibits an interdecadal shift with higher prediction skills since the late 1970s, particularly after the early 1990s. Improvements of the prediction skills for SSTs after the late 1970s are mainly found around tropical Indian Ocean and the WNP. The better prediction of the WNP after the late 1970s may arise mainly from the improvement of the SST prediction around the tropical eastern Indian Ocean. The close teleconnections between the tropical eastern Indian Ocean and WNP summer variability work both in the model predictions and observations. After the early 1990s, on the other hand, the improvements are detected mainly around the South China Sea and Philippines for the lower-tropospheric zonal wind and precipitation anomalies, associating with a better description of the SST anomalies around the Maritime Continent. A dipole SST pattern over the Maritime Continent and the central equatorial Pacific Ocean is closely related to the WNP summer anomalies after the early 1990s. This teleconnection mode is quite predictable, which is realistically reproduced by the models, presenting more predictable signals to the WNP summer climate after the early 1990s.

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The 1990s has often been dubbed 'The Decade of the Environment'. Pollution, deforestation and desertification, ozone destruction, endangerment of species of animals and wildlife, vanishing wildernesses, and energy conservation are some of the visible environmental concerns which have gained international recognition. A less visible but potentially just as important environmental concern has been raised by ecological feminists. This is a concern about the connections historical, empirical, theoretical, symbolic, and experiential between the domination of women and the domination of non-human nature.

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This article examines the careers and changing roles of British production and operations managers through three surveys covering the last quarter of the twentieth century. Careers are examined in terms of both their organisational context and the subjective experiences of those who have chosen this field, during a period of great turbulence for manufacturing due to growing global competition. The persistent features of such roles and responsibilities are contrasted with the changes in focus and demands. The managers' sources of satisfaction and frustration are outlined as are their perceptions of their situation in relation to managers in other areas. The article concludes by considering what has changed and what needs to change, in order for manufacturing to gain maximum benefit from the contribution of these managers.