Entre la pampa del lenguaje y el alambrado de la escritura: la mancha roja como síntoma de la ambigüedad de lo real en La ocasión de Juan José Saer

La presencia recurrente del color rojo en La ocasión de Saer desempeña una función desestabilizadora en relación a la representación figurativa. En el artículo se establecen analogías entre esta función y el elemento voluble, no mimético de la pintura que el pensador e historiador de arte, Georges Didi-Huberman, denomina como “pan” en contraste con el detalle, categoría asociada con el carácter icónico de la pintura. Al igual que el “pan”, las manchas rojas en la novela apuntan a la dimensión de lo real que se resiste a la legibilidad y señala los límites de la narrativa realista. Saer se vale de contrastes cromáticos para aludir a tensiones políticas y epistemólogicas y a las paradojas de escribir una novela situada en el siglo diecinueve pero incorporando la experiencia literaria del siglo veinte.     

Postmortem chest computed tomography for the diagnosis of drowning:a feasibility study

It may be difficult to distinguish the cause of death in drowning cases without specific findings. The aim of this study was to explore the forensic value of thoracic postmortem computed tomography (PMCT) using routine images and three-dimensional (3D) image reconstructions. The imaging data of PMCT examinations of six drowning cadavers, aged 21–54 years, were analyzed. Twelve victims of sudden death from coronary artery disease (CAD) were chosen as a control group. After 3D bilateral lung images were reconstructed using image processing software, an interactive medical image control system was used to measure and analyze parameters including lung volume, lung volume ratio, mean CT value of the whole lung, and lung CT value distribution curves. Lung volume and lung volume ratio were used to assess the shape changes of the lung. Lung CT value distribution curves showed the corresponding number of pixels of the different CT values in the lung image. Lung volume was not significantly larger in drowning cases (mean 2 958 cm³) than in controls (mean 2 342 cm³). Lung volume ratio values in the drowning group (mean 0.3156) were greater than those in the control group (mean 0.2763); (P = 0.02). There was no significant difference between the drowning and control group in the mean CT value of the whole lung. There were differences between lung CT value distribution curves in drowning victims and controls, with drowning victims showing a single peak and CAD cases showing a bimodal distribution. Thoracic PMCT is helpful for the forensic medical diagnosis of drowning. Lung volume ratio and lung CT value distribution are potential indicators to distinguish between drowning and CAD.     

历史中的情势与偶然——马克思基于唯物史观的政治哲学探讨

《1848年至1850年的法兰西阶级斗争》和《路易·波拿巴的雾月十八日》不仅被阐释为政治学著作和历史学著作,而且是马克思把唯物史观的一般规律具体化到政治哲学领域中的典范之作,特别是其对当时法国政治事件中"活生生的时事"的内涵和外在表现深入细致地剖析,是实现了唯物史观的基本理论与社会现实之政治事件相统一的哲学著作.对这两...     

Virtual anthropology: a preliminary test of macroscopic observation versus 3D surface scans and computed tomography (CT) scans

Virtual anthropology (VA) is based on applying anthropological methods currently used to analyse bones to 3D models of human remains. While great advances have been made in this endeavour in the past decade, several interrogations concerning how reliable these models are and what their proper use should be remain unanswered. In this research, a fundamental assumption of VA has been investigated: if the way we perceive and apply an anthropological method is truly similar when looking at bones macroscopically and through various 3D media. In order to answer, 10 skulls of known age and sex were scanned using a computed tomography (CT) scanner and a 3D surface scanner. Two observers separately applied a defined staging method to eight suture sites on these skulls, first looking at the bone macroscopically, then at the 3D surface scan, and finally on the CT scan. Two rounds of observation were carried out by each observer. Intra- and inter-observer error were evaluated, and two sample t-tests used to evaluate if the different types of medium used yielded significantly different observations. The results show a high degree of inter-observer error, and that data obtained from 3D surface scans differ from macroscopic observation (confidence level 95%, P ≤ 0.05). CT scans, in these settings, yielded results comparable to those obtained through macroscopic observations. These results offer many possibilities for future research, including indications on the kind of anthropological methods and anatomical landmarks that might be reliably transferable to the virtual environment. All current methods used in traditional anthropology should be tested, and if they prove unreliable, new techniques to analyse bones from virtual models should be developed.

Key points

• Large discrepancies between observation on dry bones and computer-generated 3D models (surface scans or CT scans) could lead to the re-evaluation of the suitability of traditional anthropological methods for application on 3D models.
• This preliminary study evaluates whether macroscopic, 3D surface scans, and CT scans viewings generate different observations.
• The results indicate that the data are not always coherent across all three media of observation.
• Explanations include the aspect given to the bone by the 3D software, differences between handling bones in real life versus on a computer, and level of expertise of the observers.

     

Empirical Evaluation of the Reliability of Photogrammetry Software in the Recovery of Three-Dimensional Footwear Impressions

This paper examines the reliability of Structure from Motion (SfM) photogrammetry as a tool in the capture of forensic footwear marks. This is applicable to photogrammetry freeware DigTrace but is equally relevant to other SfM solutions. SfM simply requires a digital camera, a scale bar, and a selection of oblique photographs of the trace in question taken at the scene. The output is a digital three-dimensional point cloud of the surface and any plastic trace thereon. The first section of this paper examines the reliability of photogrammetry to capture the same data when repeatedly used on one impression, while the second part assesses the impact of varying cameras. Using cloud to cloud comparisons that measure the distance between two-point clouds, we assess the variability between models. The results highlight how little variability is evident and therefore speak to the accuracy and consistency of such techniques in the capture of three-dimensional traces. Using this method, 3D footwear impressions can, in many substrates, be collected with a repeatability of 97% with any variation between models less than ~0.5 mm.     

Development of a Novel Finger-Trigger Interface for Trigger Pull Measurement

Trigger pull is the force that needs to be exerted on the trigger to discharge a firearm. The measurement of trigger pull can assist in the evaluation of the safety, function, and manufacturing characteristics associated with a firearm during the forensic firearm examination process. Nonetheless, the accuracy and uncertainty of trigger pull measurements may be affected by the measuring device, test procedure, and environmental conditions. In this work, an innovative finger-trigger interface device was developed to facilitate accurate trigger pull measurements. The idea was to reduce the variation related to the position of the measurement device on the trigger in existing measuring methods and devices. Three force sensors based on different technologies were initially evaluated. While two of the three sensors failed to produce data, the miniature capacitive plate sensor exhibited high precision and a linear response over the range of typical trigger pulls. To examine the effects of the finger-trigger interface on trigger pull measurement, different sensor housing prototypes were designed in silico and 3D printed for the construction of three finger-trigger interface devices. The performance of each finger-trigger interface device was evaluated by measuring the trigger pulls of several selected firearms and comparing the data to a previously published study. Our preliminary results demonstrated the novel finger-trigger interface device offered a new way to measure trigger pull in situ with acceptable accuracy and precision.     

农村承包地三权分置制度入典研究

《农村土地承包法修正案》将“三权分置”政策内容上升为法律规定,确立承包地三权分置制度。对解决承包地流转闭锁抵押难行等问题意义重大。却因将承包经营权本集体经济组织内封闭流转以法律固化,新设土地经营权性质不清、类型混合、流转不济,无益承包地债权性与物权性并可市场化开放性流转之“三权分置”目标实现。受其影响,《民法典分编(草案)》亦存同样问题。亟待农村承包地三权分置制度进一步入典完善。在实地调研基础上,遵循《民法总则》落实集体土地所有权前提下,于《民法典分编(草案)》完善中,基于英美地产权客体权益分离理论与大陆法系二次权能分离理论具兼创债权性与物权性经营权功能的地权二次分离理论,在保持土地承包经营权规定不变上,从其客体权益中分离出二元化土地经营权,并分别于合同编增设农地租赁经营合同具体规范债权性经营权、于物权编构造“农用地使用权”科学规范物权性经营权。以利能以债权性经营权顺农地灵活经营实践、物权性经营权应农地抵押及长期经营所需的二元化路径,促现行承包经营权本集体经济组织内封闭流转向派生出的土地经营权市场化开放性流转发展,以实现农村承包地三权分置制度入典达成“三权分置”、“放活土地经营权”之政策目标。     

打破政策“黑箱”的制度设计——基于广州政策兑现实践的研究

如何打破政策“黑箱”是学界和社会关注的重要议题。以广州市政策兑现改革实践为例,探讨如何从制度设计层面来打开公共政策过程中的政策“黑箱”。研究发现,虽然公共政策过程是一个动态且复杂的过程,但是通过统筹政策制定和政策落地两端、主观要素客观化、模糊标准明确化、重塑政府流程等,能够形成确定的决策环境,控制非理性因素,约束自由裁量权,并压缩权力寻租空间,从而可以从源头消除政策“黑箱”的形成土壤。广州市政府政策兑现改革过程中,通过“输入—转化—输出”的制度框架设计,形成了从政策制定到政策执行再到政策结果与评估的政策闭环,并对政策兑现的相关责任单位、流程和时限都进行了严格把控,进而实现对政策“黑箱”内部决策要素的控制。从政策“黑箱”本身入手,破解政策“黑箱”难题,实现政策的阳光承诺和给付,最终形成极具特色和借鉴意义的广州模式。     

Policy Adoption and Policy Intensity: Emergence of Climate Adaptation Planning in U.S. States

The United States is experiencing growing impacts of climate change but currently receives a limited policy response from its national leadership. Within this policy void, many state governments are stepping up and taking action on adaptation planning. Yet we know little about why some states adopt State Adaptation Plans (SAPs), while others do not. This article investigates factors that predict the emergence of SAPs, both in terms of policy adoption and policy intensity (goal ambitiousness). Applying the diffusion of innovation theory, I consider the relative influence of internal state characteristics, regional pressures, and test for conditional effects between government ideologies and severity of the problem. The results show interesting differences between predictors that influence policy adoption and ambitiousness. States are more motivated to adopt a policy when faced with greater climate vulnerability, have more liberal citizenry, and where governments have crossed policy hurdles by previously passing mitigation plans. The intensity of policies and goal setting, moreover, is more likely to be driven by interest group politics and diffuse through policy learning or sharing information among neighboring states in Environmental Protection Agency regions. These findings support an emerging scholarship that uses more complex dependent variables in policy analysis. These variables have the potential to differentiate symbolic from substantive policies and capture finer information about predictors of importance.     

Making a Place for Alternative Technologies: The Case of Agricultural Bio‐Inputs in Argentina

This article characterizes the ways in which the actors in charge of designing and implementing public policies intervene to promote the emergence of alternatives to problematic technologies. It is based on a case study conducted in Argentina that focuses on initiatives to promote the development of biological agricultural inputs in the context of increasingly controversial chemical inputs. The study spotlights the political, institutional, and semantic efforts made by policy makers and public administrations to ensure these new inputs find their way into organizations and onto their agendas. Their work consists in attenuating the boundaries between chemical and biological inputs, and reducing opposition by creating categories and organizations that downplay potential dissension and highlight the possible coexistence of technological paradigms. Contrary to what the injunctions of technological substitution suggest, we show that putting alternative technologies on the public agenda depends largely on their inclusion in institutional and regulatory infrastructures originally designed for technologies that are likely to decline. More broadly, it relies on the construction of continuity between the two types of technologies.