bluuebunny/crossref_metadata_2025 huggingface dataset:
Outcome of endovascular treatment of internal iliac artery aneurysms: a single center retrospective review
Authors: Kim Jinoo , Chun Joo-Young , Ameli-Renani Seyed , Ratnam Lakshmi , Mailli Leto , Pavlidis Vyzantios , Das Raj , Morgan Robert
Published: October 2022

Purpose

To evaluate the technical feasibility and clinical outcomes of endovascular treatment for internal iliac artery (IIA) aneurysms.

Material and methods

This was a retrospective analysis of 25 patients with 32 IIA aneurysms (mean diameter: 39.1 ± 12.6 mm) who underwent endovascular treatment over a 10-year period, and were available for follow-up. Univariate analysis was used to determine the association between variables (including aortoiliac involvement and technique) and outcome.

Results

The IIA inflow was covered with an iliac stent graft (N = 29) or embolized with a plug (N = 3). The IIA outflow was embolized in all but one case in which there was thrombotic occlusion of outflow branches. Outflow embolization using plugs or coils was performed in the distal IIA or anterior/posterior trunks in 9 cases and distal IIA branches in 22 cases. During a mean follow-up period of 39.9 months, 31.2% of aneurysms demonstrated endoleak and 12.5% demonstrated enlargement. Univariate analysis revealed that endoleak was associated with technical failure (p = 0.01) and that endoleak rate was higher in patients who underwent distal IIA branch embolization (p = 0.03). No variable was associated with sac expansion. Major complication occurred in one patient who died from aneurysm rupture. Minor complications were reported in six patients who developed femoral pseudoaneurysm (N = 2, 8%), buttock claudication (N = 3, 12%), and limb graft occlusion (N = 1, 4%).

Conclusion

Endovascular treatment of IIA aneurysms effectively prevents sac expansion. Endoleak was more frequently observed in cases of technical failure and those in which distal IIA branches were embolized.

Level of Evidence

Level 3b, retrospective cohort study.
Outcomes of Childhood Noninfant Acute Lymphoblastic Leukemia With 11q23/KMT2ARearrangements in a Modern Therapy Era: A Retrospective International Study
Authors: Attarbaschi Andishe , Möricke Anja , Harrison Christine J. , Mann Georg , Baruchel André , De Moerloose Barbara , Conter Valentino , Devidas Meenakshi , Elitzur Sarah , Escherich Gabriele , Hunger Stephen P. , Horibe Keizo , Manabe Atsushi , Loh Mignon L. , Pieters Rob , Schmiegelow Kjeld , Silverman Lewis B. , Stary Jan , Vora Ajay , Pui Ching-Hon , Schrappe Martin , Zimmermann Martin ,   on behalf of the Ponte-di-Legno Childhood Acute Lymphoblastic Leukemia Working Group
Published: October 2022

PURPOSE

We aimed to study prognostic factors and efficacy of allogeneic hematopoietic stem-cell transplantation (allo-HSCT) in first remission of patients with noninfant childhood acute lymphoblastic leukemia (ALL) with 11q23/ KMT2A rearrangements treated with chemotherapy regimens between 1995 and 2010.

PATIENTS AND METHODS

Data were retrospectively retrieved from 629 patients with 11q23/ KMT2A-rearranged ALL from 17 members of the Ponte-di-Legno Childhood ALL Working Group. Clinical and biologic characteristics, early response assessed by minimal residual disease at the end of induction (EOI) therapy, and allo-HSCT were analyzed for their impact on outcomes.

RESULTS

A specific 11q23/ KMT2A translocation partner gene was identified in 84.3% of patients, with the most frequent translocations being t(4;11)(q21;q23) (n = 273; 51.5%), t(11;19)(q23;p13.3) (n = 106; 20.0%), t(9;11)(p21_22;q23) (n = 76; 14.3%), t(6;11)(q27;q23) (n = 20; 3.8%), and t(10;11)(p12;q23) (n = 14; 2.6%); 41 patients (7.7%) had less frequently identified translocation partner genes. Patient characteristics and early response varied among subgroups, indicating large biologic heterogeneity and diversity in therapy sensitivity among 11q23/ KMT2A-rearranged ALL. The EOI remission rate was 93.2%, and the 5-year event-free survival (EFS) for the entire cohort was 69.1% ± 1.9%, with a range from 41.7% ± 17.3% for patients with t(9;11)-positive T-ALL (n = 9) and 64.8% ± 3.0% for patients with t(4;11)-positive B-ALL (n = 266) to 91.2% ± 4.9% for patients with t(11;19)-positive T-ALL (n = 34). Low EOI minimal residual disease was associated with favorable EFS, and induction failure was particularly predictive of nonresponse to further therapy and relapse and poor EFS. In addition, EFS was not improved by allo-HSCT compared with chemotherapy only in patients with both t(4;11)-positive B-ALL (n = 64 v 51; P = .10) and 11q23/ KMT2A-rearranged T-ALL (n = 16 v 10; P = .69).

CONCLUSION

Compared with historical data, prognosis of patients with noninfant 11q23/ KMT2A-rearranged ALL has improved, but allo-HSCT failed to affect outcome. Targeted therapies are needed to reduce relapse and treatment-related mortality rates.
Bad Education
Authors: Edelman Lee
Published: October 2022

Long awaited after No Future, and making queer theory controversial again, Lee Edelman’s Bad Education proposes a queerness without positive identity—a queerness understood as a figural name for the void, itself unnamable, around which the social order takes shape. Like Blackness, woman, incest, and sex, queerness, as Edelman explains it, designates the antagonism, the structuring negativity, preventing that order from achieving coherence. But when certain types of persons get read as literalizing queerness, the negation of their negativity can seem to resolve the social antagonism and totalize community. By translating the nothing of queerness into the something of “the queer,” the order of meaning defends against the senselessness that undoes it, thus mirroring, Edelman argues, education’s response to queerness: its sublimation of irony into the meaningfulness of a world. Putting queerness in relation to Lacan’s “ab-sens” and in dialogue with feminist and Afropessimist thought, Edelman reads works by Shakespeare, Jacobs, Almodóvar, Lemmons, and Haneke, among others, to show why queer theory’s engagement with queerness necessarily results in a bad education that is destined to teach us nothing.
The Dancer's Voice
Authors: Putcha Rumya Sree
Published: October 2022

In The Dancer’s Voice Rumya Sree Putcha theorizes how the Indian classical dancer performs the complex dynamics of transnational Indian womanhood. Putcha argues that the public persona of the Indian dancer has come to represent India in the global imagination—a representation that supports caste hierarchies and Hindu ethnonationalism, as well as white supremacist model minority narratives. Generations of Indian women have been encouraged to embody the archetype of the dancer, popularized through film cultures from the 1930s to the present. Through analyses of films, immigration and marriage laws, histories of caste and race, advertising campaigns, and her own family’s heirlooms, photographs, and memories, Putcha reveals how women’s citizenship is based on separating their voices from their bodies. In listening closely to and for the dancer’s voice, she offers a new way to understand the intersections of body, voice, performance, caste, race, gender, and nation.
Study of the 3H(p,n)3He neutron producing reaction at N.C.S.R. “Demokritos” – Application on the 232Th(n,f) reaction
Authors: Gkatis Georgios , Michalopoulou Veatriki , Chasapoglou Sotiris , Vlastou Roza , Kokkoris Mike , Axiotis Mike , Lagoyannis Anastasios
Published: October 2022

In the present work, the neutron beams produced via the 3H(p,n)3He reaction, were studied at N.C.S.R. “Demokritos”. For detecting and monitoring the neutrons, the following reference reactions 238U(n,f), 235U(n,f) and 237Np(n,f) were used. Furthermore, a systematic study of the parasitic neutrons, produced via reactions on the target constituents, was performed. At the same time, the cross sections of the 232Th(n,f) reaction were deduced, in the energy range from 2 to 5.5 MeV. Seven actinide targets were used, coupled with seven Micromegas detectors, one for each target, for the detection of the fission fragments. The target-detector assembly was placed in an aluminum chamber filled with Ar:CO2 (90:10) in atmospheric pressure and room temperature. Monte Carlo simulations with the MCNP6 code, coupled with the NeuSDesc and SRIM-2013 codes, were used for the estimation of the neutron beam incident at each target. Additional Monte Carlo simulations were carried out using the codes FLUKA and GEF, in order to determine the exact masses of the 232Th targets and the energy deposition of the fission fragments in the detector gas.
Suffering in the Name of Protecting: The Case of the Fukushima Population
Authors: Kalef-Ezra John
Published: October 2022

Major nuclear accidents are rare events causing large and long-lasting medical, environmental, economic, and societal consequences. Urgent mass evacuation and long-term displacement of about 165.000 persons and their long-term resettlement after the 2011 Fukushima-1 accident destabilized Japan. As of March 2020, the official number of displaced persons from their home in Fukushima Prefecture was reduced to 40.335, an action that averted a collective effective dose of about 3,000 man.Sv. Most of the causalities were elderely volunarable pesons, such as patients with chronic diseases, instititionalized individuals, and very poor persons. However, no early radiation-induced somatic effects to public were reported. This article seeks to compare the benefit of the evacuation/resettlement procedure with its cost. The accident-related death toll in Fukushima Prefecture has to  be differantiated from that due to the earthquaque and the tsunami that trigered the foressen and prevenatble nuclear 2011 accident. Taking into acount the ratio of the direct and the indirect deaths at the Miyagi and  Iwate Prefectures, can be assumed that out the 2.313 indirect life losses in Fukushima registered up at to 2020, only about 165 could be attributed to the eartquake and the tsuami, and few tens due to the radiation induced cancer among the dispaced persons. The mass dispacement resulted in increased incidence of severe somatic effects, mental and psychic disorders, social isolation, insecurity, unemployment, poverty, urbanization, and exploitation. Therefore, the mitigation actions, as designed and implemented, led in a secondary tragedy larger than that due the accident itself, resulting among other things to the death of about 2.100 persons in the name of sparing, in theory, about 150 lives with a latency time of decades
Fast Neutron Activation Analysis at the NCSRD Tandem Accelerator facility: Prognosis and Optimization
Authors: Bari Z. , Chasapoglou S. , Kalamara A. , Vasilopoulou T. , Axiotis M. , Lagoyannis A. , Kokkoris M. , Vlastou R. , Stamatelatos I.E.
Published: October 2022

Neutron Activation Analysis Prognosis and Optimization (NAAPRO) code was applied for the prognosis of the activation products, their activities, the number of counts recorded in the detector, the minimum detection limits as well as the gamma spectrum obtained in fast neutron activation analysis experiments. Simulations were performed for geological and biological reference materials irradiated with 14 MeV neutrons at the 5.5 MV NCSRD tandem accelerator facility. The results of the study demonstrated the fast neutron analytical capabilities of the accelerator and, moreover, allowed for the optimization of the FNAA parameters, while avoiding the performance of difficult and time-consuming experimental tests at the accelerator facility.
ICTs in the banking sector in the times of the COVID-19 pandemic: the customer’s perspective
Authors: Piotrowski Dariusz
Published: October 2022

Motivation: The digitization of financial services has brought a noticeable decline in the importance of branch banking for customers wanting to contact their bank or receive financial services. The lack of personal contact with bank employees has become particularly significant during the pandemic, with remote modes of communication reducing the risk of contracting SARS-CoV-2.

Aim: The present study applies the Spearman’s rank correlation coefficient and binomial logit model to determine the impact of the digitization of bank services and the COVID-19 pandemic on retail customers’ needs for branch banking.

Results: The empirical research conducted demonstrated that the factors significantly positively influencing the need to use financial services provided by staff in bank branches were respondent experience in using bank advisory services and fear of interpersonal contact in the pandemic context. Meanwhile, variables with a negative effect were the use of the electronic banking platform, attitudes towards the use of the artificial intelligence technology in the banking sector, and perceptions of the advantages of remote communication with institutions in the pandemic context.
VAT gap determinants in the European Union and Poland
Authors: Pluskota Anna
Published: October 2022

Motivation: VAT revenues constitute a significant part of the budgets of EU countries and Poland. Both the EU and Poland are taking steps to reduce the VAT gap. To define the areas influencing the size of the VAT gap, its determinants should be indicated.

Aim: The study aims to identify the determinants of the VAT gap in the EU and Poland. By comparing the impact of individual determinants on the VAT Gap in the EU and Poland, it will be possible to identify common factors shaping the VAT gap in the EU and Poland.

Results: Based on the econometric study, it was indicated that growth, trade, consumption, and corruption are significant determinants of the VAT gap in the EU and Poland. However, it has been shown that the impact of consumption and corruption on the VAT gap in Poland is different from that in the EU.
Una cabeza romana de Marte en la colección arqueológica de la Universidad de Sevilla.
Authors: Beltrán Fortes José , Loza Azuaga María Luisa
Published: October 2022

Se estudia una escultura romana procedente de la ciudad romana de Arva (Peña de la Sal, Alcolea del Río, prov. Sevilla), descubierta en unas excavaciones de unas termas romanas por Arthur Engel en 1890. Ingresó en la colección arqueológica del Ateneo y Sociedad de Excursiones de Sevilla, en 1891, y, en 1912, en el Museo Arqueológico de la Facultad de Filosofía y Letras de la Universidad de Sevilla; hoy forma parte del patrimonio histórico-artístico de esta institución. Representa la cabeza del dios Marte, barbado, y llevaría un casco corintio añadido, hoy perdido, seguramente metálico. Su paralelo más cercano es otra cabeza similar de Celti (Peñaflor, prov. Sevilla).
Eracle a processo. La contesa con Augia nella Biblioteca di Apollodoro.
Authors: Acerbo Stefano
Published: October 2022

: Lo studio della disputa tra Augia ed Eracle per il mancato pagamento della pulizia della stalla della Biblioteca permette di apprezzare la complessa natura della materia mitica raccolta e plasmata da Apollodoro. La narrazione ha una forma giuridica che corrisponde alla procedura di età classica, e contrasta con il contesto pre-politico del mito. Allo stesso tempo, molti dettagli del racconto rivelano come gli eroi agiscano secondo una logica che non corrisponde al pensiero giuridico, ma segue gli obblighi personali che strutturano la società degli γένη eroici.
Voluntary Precision Disclosure and Endogenous Market Feedback
Authors: Schneemeier Jan
Published: October 2022

We explore a manager’s incentives to disclose the precision of a signal about firm profitability. Voluntary disclosure of precision information encourages traders to acquire private information, increasing price informativeness and improving the firm’s investment efficiency. We highlight a novel tradeoff: on the one hand, more precise public information crowds out traders’ information acquisition by leveling the playing field. On the other hand, there can also be a crowding-in effect because high-precision disclosures indicate greater managerial confidence and higher investment, which increases the traders’ value of information. The crowding-in effect can dominate if the firm discloses above-average profitability. We derive testable predictions regarding the financial market consequences of supplemental disclosures that are informative about the precision or relevance of payoff-related signals.

This paper was accepted by Brian Bushee, accounting.
A 5-year observation of the dahl principle to manage localized anterior tooth wear
Authors: Goh David , McLaughlin Matthew , Klineberg Iven
Published: October 2022

This clinical report reviews and assesses a 5-year observation of a minimal intervention approach (using the Dahl concept) for the management of severe anterior tooth wear in a 44-year-old male.

CPD/Clinical Relevance: The Dahl concept is a versatile, inexpensive and conservative technique for the management of localized severe anterior tooth wear.
Fast and reliable technique for spatial coherence measurement with a temporally modulated nonredundant slit array
Authors: Shirai Tomohiro , Friberg Ari T.
Published: October 2022

We propose a method of measuring the spatial coherence of light by means of a temporally modulated nonredundant slit array implemented on a digital micromirror device. We first formulate the theory of the spatial coherence measurement to incorporate a general case when the observation plane is not necessarily placed in the far field of the slit array. We then demonstrate experimentally that a single measurement determines the spatial coherence for 15 different slit separations accurately, even if background light is unavoidable, under the condition that a nonredundant array of six slits is illuminated evenly. These results clearly show that fast and highly reliable spatial coherence measurement is achievable with the proposed method without any difficulties.
Deep learning-based image reconstruction for photonic integrated interferometric imaging
Authors: Zhang Ziran , Li Haoying , Lv Guomian , Zhou Hao , Feng Huajun , Xu Zhihai , Li Qi , Jiang Tingting , Chen Yueting
Published: October 2022

Photonic integrated interferometric imaging (PIII) is an emerging technique that uses far-field spatial coherence measurements to extract intensity information from a source to form an image. At present, low sampling rate and noise disturbance are the main factors hindering the development of this technology. This paper implements a deep learning-based method to improve image quality. Firstly, we propose a frequency-domain dataset generation method based on imaging principles. Secondly, spatial-frequency dual-domain fusion networks (SFDF-Nets) are presented for image reconstruction. We utilize normalized amplitude and phase to train networks, which reduces the difficulty of network training using complex data. SFDF-Nets can fuse multi-frame data captured by rotation sampling to increase the sampling rate and generate high-quality spatial images through dual-domain supervised learning and frequency domain fusion. Furthermore, we propose an inverse fast Fourier transform loss (IFFT loss) for network training in the frequency domain. Extensive experiments show that our method improves PSNR and SSIM by 5.64 dB and 0.20, respectively. Our method effectively improves the reconstructed image quality and opens a new dimension in interferometric imaging.
Efficient monocular vision method used for measuring the angular rate and acceleration in rotation motion
Authors: Yang Ming , An Hanglei , Mo Sifan , Gong Huinan , Dong Bingbing , Chen Guanggui
Published: October 2022

The rotation motion is one of the most basic dynamic units, whose accurate measure-ment is essential to the aspects of inertial navigation, mechanical manufacturing, robot control. Currently, the laser interferometry (LI), the sensor-based and autocollimator-based methods are commonly applied to the rotation motion measurement. However, they are always difficult to meet the requirements of high-accuracy measurement and wide frequency range. In this study, a novel monocular vision-based measurement method is investigated, which determines the angular rate and angular acceleration by using the improved line segmentation detector (LSD) method with sub-pixel accuracy and simultaneously improves the measurement accuracy and frequency range. Additionally, its hardware implementation only requires a simple and flexible vision measurement system. Several comparison experiments with the LI and grating sensor-based method demonstrate that the investigated method can obtain the measurement resolution of 0.0005° and accuracy of 0.480% in the range from 0.001 to 10 Hz.
Few-cycle 65-µJ pulses at 11.4  µm for ultrafast nonlinear longwave-infrared spectroscopy
Authors: Fuertjes Pia , Bock Martin , von Grafenstein Lorenz , Ueberschaer Dennis , Griebner Uwe , Elsaesser Thomas
Published: October 2022

Low-energy excitations can provide insight into the basic ultrafast nonequilibrium dynamics of condensed matter. High-energy femtosecond pulses in the long-wavelength infrared are required to induce such processes, and can be generated in an optical parametric chirped pulse amplification (OPCPA) system comprising three GaSe stages. A femtosecond Cr:ZnS laser serves as the front-end, providing the seed for the 2.0-µm pump and the 2.4-µm signal pulses without nonlinear conversion processes. The OPCPA system is pumped at 2.05 µm by a picosecond Ho:YLF regenerative amplifier at a 1-kHz repetition rate. The recompressed idler pulses at 11.4 µm have a duration of 185 fs and an unprecedented energy of 65 µJ, corresponding to a pump-to-idler conversion efficiency of 1.2%. Nonlinear transmission experiments in the range of the L2 infrared band of liquid water demonstrate the potential of the pulses for nonlinear vibrational spectroscopy of liquids and solids.
Rapid diagnostic tests and ELISA for diagnosing chronic Chagas disease: Systematic revision and meta-analysis
Authors: Suescún-Carrero Sandra Helena , Tadger Philippe , Sandoval Cuellar Carolina , Armadans-Gil Lluis , Ramírez López Laura Ximena
Published: October 2022

Objective

To determine the diagnostic validity of the enzyme-linked immunosorbent assay (ELISA) and Rapid Diagnostic Tests (RDT) among individuals with suspected chronic Chagas Disease (CD).

Methodology

A search was made for studies with ELISA and RDT assays validity estimates as eligibility criteria, published between 2010 and 2020 on PubMed, Web of Science, Scopus, and LILACS. This way, we extracted the data and assessed the risk of bias and applicability of the studies using the QUADAS-2 tool. The bivariate random effects model was also used to estimate the overall sensitivity and specificity through forest-plots, ROC space, and we visually assessed the heterogeneity between studies. Meta-regressions were made using subgroup analysis. We used Deeks’ test to assess the risk of publication bias.

Results

43 studies were included; 27 assessed ELISA tests; 14 assessed RDTs; and 2 assessed ELISA and RDTs, against different reference standards. 51.2 % of them used a non-comparative observational design, and 46.5 % a comparative clinical design (“case-control” type). High risk of bias was detected for patient screening and reference standard. The ELISA tests had a sensitivity of 99% (95% CI: 98–99) and a specificity of 98% (95% CI: 97–99); whereas the Rapid Diagnostic Tests (RDT) had values of 95% (95% CI: 94–97) and 97% (95% CI: 96–98), respectively. Deeks’ test showed asymmetry on the ELISA assays.

Conclusions

ELISA and RDT tests have high validity for diagnosing chronic Chagas disease. The analysis of these two types of evidence in this systematic review and meta-analysis constitutes an input for their use. The limitations included the difficulty in extracting data due to the lack of information in the articles, and the comparative clinical-type design of some studies.
Projecting Spanish fertility at regional level: A hierarchical Bayesian approach
Authors: Rafael Caro-Barrera José , García-Moreno García María de los Baños , Pérez-Priego Manuel
Published: October 2022

The transition from a demographic regime of high mortality and high fertility to one with low mortality and low fertility is universal and comes along with the process of socio-economic modernization. The Spanish total fertility rate has decreased to below replacement levels in the last decades. The decline has persisted since the 1960s and is diverse across the country. Based on that diversity, the use of population forecasts, not only at national but at regional levels, for planning purposes (governments and private sector) with large horizons has become a must to provide essential services. Using a Bayesian hierarchical model we constructed probabilistic fertility forecasts for Spain at the regional level. Although this approach is already issued by the United Nations little research has been done focusing on the Spanish subnational level. Our objective is to disaggregate the national projections of the total fertility rate for Spain into regional forecasts. The results of this research will show the model fitting, first to the national level and then using a multifaceted and continuous evolution of fertility over time, at the regional level, to check its convergence.
Trend-following with better adaptation to large downside risks
Authors: Takada Teruko , Kitajima Takahiro
Published: October 2022

Avoiding losses from long-term trend reversals is challenging, and trend-following is one of the few trading approaches to explore it. While trend-following is popular among investors and has gained increased attention in academia, the recent diminished profitability in equity markets casts doubt on its effectiveness. To clarify its cause and suggest remedies, we thoroughly examine the effect of market conditions and averaging window on recent profitability using four major stock indices in an out-of-sample experiment comparing trend-following rules (moving average and momentum) and a machine-classification-based non-trend-following rule. In addition to the significant advantage of trend-following rules in avoiding downside risks, we find a discrepancy in the optimum averaging window size between trend direction phases, which is exacerbated by a higher positive trend direction ratio. A higher positive trend direction ratio leads to poor performance relative to buy-and-hold returns. This discrepancy creates the dilemma of choosing which trend direction phase to emphasize. Incorporating machine-learning into trend-following is effective for alleviating this dilemma. We find that the profit-maximizing averaging window realizes the level that best balances the dilemma and suggest a simple guideline for selecting the optimum averaging window. We attribute the sluggishness of trend-following in recent equity markets to the insufficient chances of trend reversals rather than their loss of profitability. Our results contribute to improving the performance of trend following by mitigating the dilemma.
The approach to circular fashion design: An exploration of designing for otherways[project]
Authors: Lettmann Sabine
Published: October 2022

The purpose of this article is to provide information about the approach to developing circular fashion collections concepts built from scratch. I documented my approach to design my collection otherways[project], launched in 2020, to understand and analyse the challenges and barriers stemming from applying circular design strategies. Current literature highlights organizational but also individual factors as instrumental in hindering the transition from a linear industry into a new one that embraces the circular economy as a solution to tackle environmental and societal issues. Bridging the various design stages and production, fashion designers play a major role for the urgent industry shift. However, limited time availability and a lack of knowledge and guidance often influence the adoption of new skills that can foster circular fashion design. To address this, I exemplarily applied circular design strategies and used reflective practice as a research method to analyse the technical as well as the cognitive impact of designing for a closed-loop business model. By using a visual diagram of a core loop with four additional satellites to map my design decisions against, I identified opportunities of designing with a circular strategy affecting all aspects from material sourcing to collection production and distribution, repair, reuse/closing the loop. The consideration of external factors such as customers (here users) enriches the value of circular design; hence, I conducted a free pilot with five users to test the effectiveness of my prototype collection. Open-ended questionnaires revealed their experience of wearing a garment of their choice and enabled a user-centric iteration process resulting in improving my collection for lease. Flexibility and systems thinking were main internal factors that I defined as essential for creating my circular collection concept alongside expanding the designer’s role from garment developer to facilitator of closed fashion loops.
Slow fashion and sustainable entrepreneurship: A case study evaluation of the micro-factory model
Authors: Trippeer Barbara , Gam Hae Jin
Published: October 2022

A growing number of studies in sustainable fashion suggest that small-scale manufacturers have begun to gain momentum as a viable strategy for sustainable apparel development. Some of these smaller organizations have turned to a ‘micro-factory’ model, in which localized, vertically oriented operations allow for more control over the supply chain and development. Others have chosen to focus on ‘slow-fashion’ models, which emphasize value, such as quality over quantity, as the means of achieving sustainable development goals. This article evaluates the case study of an American south-west based micro-factory, which utilizes slow-fashion methodologies, against the current literature. This study aims to see if the micro-factory framework is a viable alternative business strategy of sustainable entrepreneurship that could be incorporated into the fashion design curriculum. The case study documentation, a blend of interviews and observations, was guided by Brush’s model (1992) of female entrepreneurship. The data analysis identified opportunities and challenges in practising the micro-factory model in women’s performance apparel clothing through a slow-fashion model. Based on this research, the authors propose the framework of the micro-factory as one alternative to meet the needs of apparel design product development. This research indicates successful approaches to sustainable design and production and tertiary elements involved in sustainability, such as mental health and financial well-being, identified as benefits of the slow-fashion approach.
Noventa e nove números da revista Geotecnia
Authors: Matos Fernandes Manuel
Published: October 2022

Neste pequeno texto de abertura do Nº 100-número especial -da Revista GEOTECNIA, evoca-se a sua criação em 1971 e presta-se homenagem a Úlpio Nascimento e a José Folgue como seus pais. Destaca-se o papel da Revista como veículo de divulgação das matérias geotécnicas em língua portuguesa, contando desde o seu início com relevante contribuição brasileira. Apresenta-se alguns dados que foram coligidos sobre os noventa e nove números já publicados. Esboça-se uma análise da história da revista dividida em três fases e aponta-se algumas perspectivas para o seu futuro.
Modelo reológico de Kelvin sujeito uma tensão parabólica cíclica
Authors: Peres Rodrigues Fernando
Published: October 2022

Estuda-se o modelo de Kelvin sujeito a uma tensão parabólica cíclica de valor máximo σM, verificando-se que a sua extensão em função do tempo é formada, em cada ciclo, por troços de exponenciais compostas.
Taludes instabilizados por percolações, e correcção visceral das análises correntes e das drenagens estabilizantes significativas
Authors: De Mello Victor , Sasaki Larocca Erika , Quintanilha Raquel , De Barros Meireles Ewerton
Published: October 2022

Passa-se de relance por menção dos complexos fatores de azares e riscos dominantes naturais erráticos menos previsíveis do que os dos maciços construídos sob controle: relembra-se o princípio básico dos atendimentos mediante a seleção do "universo físico" menos vulnerável, sob domínio da estatística de médias. Exemplifica-se na barragem de terra (de Mello, 1977; Viotti, 1989). No tocante as análises convencionais de instabilizações de taludes, demonstra-se que coincidências históricas e regionais (Bishop, 1952) introduziram um "gene poluidor'' em todos os métodos e programas de computação. Gerados por uma hipótese simplificadora de Terzaghi (1936), prevalecem ao longo de 67 anos com um erro significativo conceitual e numérico, obviamente a favor da segurança, anti-económico. Ressalta-se a sedução preponderante da computação, que desviou os civis-geotécnicos dos entusiasmos pela geotecnia apaixonante de aprimoramento dos fatores razoavelmente controláveis. Incorporam-se correcções conceituais e práticas bem fundadas nos avanços pesquisadores, e no questionamento convencido e convincente dos primórdios, inescapavelmente mais grosseiros, de parâmetros e hipóteses que nos serviram por longo tempo, com grato reconhecimento. Exemplificam-se alguns erros a corrigir de imediato.
O solo-cal na pavimentação de estradas e aeródromos
Authors: Castro Elda , Luís António
Published: October 2022

Neste trabalho apresenta-se uma breve síntese dos conhecimentos actuais sobre estabilização de solos com cal com vista à sua aplicação em estradas e aeródromos, referem-se os pontos com mais interesse de alguns estudos laboratoriais realizados no LNEC neste domínio, e descreve-se o emprego que este tipo de estabilização tem tido em Moçambique e a técnica de construção aí utilizada.
Nova forma do defórmetro desenvolvido pelo LNEC para a determinação do estado de tensão em maciços rochosos
Authors: Rocha Manuel , Silvério Arnaldo , Pedro J. Oliveira , Delgado J. Sintra
Published: October 2022

Como nova forma do defórmetro "STG" desenvolvido pelo LNEC para a determinação do estado de tensão em maciços rochosos, propõe-se uma camada cilíndrica definida pelos diâmetros 31 mm e 35 mm, com eléctricos de resistência incluídos a meia-espessura da parede. O recente defórmetro tubular de plástico, que se instala como o seu antecessor num furo de sondagem EX, reduz substancialmente a incidência das situações práticas em que a sobrecarotagem de libertação das tensões determina a rotura da ligação defórmetro-rocha. Deduzem-se e aferem-se experimentalmente expressões analíticas que habilitam a calcular o estado completo de tensão no maciço em estudo, a partir das nove extensões medidas com o defórmetro.
Deformações como base fundamental de escolha da fundação
Authors: Mello Victor
Published: October 2022

Explicam-se as razões pelas quais modernamente em estruturas maiores e de acabamentos mais exigentes prevalece sempre, no dimensionamento de fundações, o condicionamento a recalques admissíveis, em comparação com os critérios de segurança perante a rotura. Fornecem-se indicações completas para a estimativa de recalques de fundações, quer direitas, quer profundas, reportando sempre à experiência profissional brasileira, rebatida contra o pano de fundo da teorização internacional mais actualizada e coerente. Em primeiro grau de aproximação utiliza-se o Standard Penetration Test, SPT, porém com ênfase em correcções indispensáveis. Indicam-se ensaios e cálculos mais aprimorados para os casos que mereçam um segundo grau de aproximação. Discutem-se os níveis de aceitação de recalques diferenciais e a decisão consciente respectiva.
Solos expansivos comportamento, identificação, quantificação da instabilidade volumétrica e projectos de fundações (1 parte)
Authors: Silva J. A. Horta
Published: October 2022

Discute-se o comportamento dos solos expansivos à base do princípio da tensão efectiva e da sua composição e história geológica; descrevem-se alguns métodos considerados de certa utilidade para identificar e quantificar a instabilidade volumétrica; analisam-se os condicionamentos geológico geotécnicos a ter em conta nos projectos de fundações de edifícios para sistemas de fundações superficiais e profundas de estruturas semi-rígidas.
Solos expansivos comportamento, identificação, quantificação da instabilidade volumétrica e projectos de fundações (II parte)
Authors: Silva J. A. Horta
Published: October 2022

Discute-se o comportamento dos solos expansivos à base do princípio da tensão efectiva e da sua composição e história geológica; descrevem-se alguns métodos considerados de certa utilidade para identificar e quantificar a instabilidade volumétrica; analisam-se os condicionamentos geológico-geotécnicos a ter em conta nos projectos de fundações de edifícios para sistemas de fundações superficiais e profundas de estruturas semi-rigidas.
Drenagem dos túneis do metropolitano de Lisboa
Authors: Amaral João
Published: October 2022

Descrição do esquema adoptado para a drenagem das águas freáticas, de infiltração, de lavagem e negras, nos túneis e estações tendo em atenção os solos e os níveis freáticos existentes.
Microscopia electrónica no estudo de argilas. Casos de solos e sedimentos de Angola.
Authors: Horta da Silva J. A.
Published: October 2022

A microscopia electrónica desempenha grande papel nos estudos mineralógicos e microestruturais de argilas. Neste trabalho, apresentam-se alguns exemplos da aplicação da microscopia electrónica de transmissão e reflexão no estudo de sedimentos de Angola.  Referem-se casos de ocorrência de paligorskite nos calcários da Cazenga, natureza, cristalinidade e morfologia de óxidos e hidróxidos de ferro e de caulinite de solos ferruginosos e lateríticos de Luanda, Luso, Cela, etc., ocorrência de alunite e jarosite nos sedimentos de Luanda e microestruturas de argilas expansivas.
Nota sobre a influencia da composição mineralógica e características de compactação no comportamento expansivo de um solo
Authors: Silva J. A. Horta , Nunes A. Santos
Published: October 2022

No  decurso  do  estudo  geotécnico  preliminar  da  futura  estrada  Maria  Tereza-Salazar, foi detectada a ocorrência de um solo com comportamento altamente expansivo, quando sujeito a compactação pesada. Nesta nota apresenta-se um estudo detalhado da composição do solo e discute-se o seu comportamento expansivo em termos da influência da mineralogia e características de compactação
Previsão da alterabilidade de materiais rochosos naturais
Authors: Rodrigues J. Delgado
Published: October 2022

Fazem-se algumas considerações sobre a previsão da alterabilidade de materiais rochosos naturais perante os agentes de alteração, focando, em particular, as características intrínsecas do material que mais influem no seu comportamento. Enumeram-se e criticam-se algumas técnicas utilizadas na previsão dessa alterabilidade.
A utilização de cascalho de terraço na barragem de São Simão
Authors: Madureira Cláudio
Published: October 2022

Comparações entre ensaios de compactação com amostras integrais e amostras reduzidas representativas das granulometrias totais, em que foram verificadas a influência da Energia de Compactação, Tamanho Máximo das Partículas, Humidade de Absorção da Fracção graúda e Percentagem de Cascalho, bem como a execução de Aterros Experimentais  utilizando  equipamento  de compactação do tipo vibratório-liso, permitiram o desenvolvimento de  um  método  de controlo  para  a compactação do "cascalho de terraço" utilizado em larga escala.na Barragem de São Simão, Brasil.
Goniômetro para determinação do ângulo de fricção entre partículas
Authors: Nascimento Úlpio
Published: October 2022

Como pesquisa básica para o esclarecimento dos mecanismos de atrito de materiais granulares, conduziram-se ensaios para medição da fricção entre partículas, tendo-se desen­volvido para o efeito um novo aparelho, o goniómetro de fricção.  Nesse aparelho, com o qual se mede directamente o ângulo de fricção, aplica-se no contacto entre duas partículas uma força de intensidade constante cujo ângulo de obliquidade se faz crescer até provocar o deslizamento entre elas. O valor máximo dessa obliquidade dá o ângulo de fricção pretendido.  As superfícies de contacto das partículas são ensaiadas com a sua forma natural sem qualquer operação de desgaste para as tomar planas. O aparelho está concebido para a medição do ângulo de fricção num dado contacto entre partículas apenas numa direcção desse contacto; não permite pois a fácil determinação da aniso tropia dum contacto quanto à sua fricção. Trata-se pois dum goniómetro unidireccional. Analisam-se as principais causas de erro sistemático e apresentam-se as maneiras de os corrigir. Apontam-se as vantagens que terá um goniómetro multidireccional quer para permitir eliminar erros sistemáticos, quer para estudos de fricções anisotrópicas. Apresentam-se resultados de ensaios realizados sobre partículas de seixo quartzoso, de brita calcária e de brita gabro-diorítica. Comentam-se esses resultados e referem-se futuras investigações.
Notas sobre tratamentos de conservação de pedras em monumentos
Authors: Castro Elda
Published: October 2022

Referem-se resumidamente os tratamentos de conservação da pedra em monumentos (limpeza, consolidação e protecção) actualmente mais utilizados, e chama-se a atenção para a necessidade de efectuar estudos prévios para o estabelecimento de um "diagnóstico" correcto. Examina-se com um pouco mais de pormenor, dado o seu actual interesse, o problema da limpeza de cantarias manchadas por inscrições.

Apresentam-se ainda os métodos de conservação que estão a ser adoptados nas Catedrais de Colónia e de Milão.
Critérios de dimensionamento de ancoragens em escavações subterrâneas
Authors: Gomes M. J. Leal
Published: October 2022

No presente artigo tecem-se algumas considerações acerca dos critérios geomecânicos de projecto de sistemas de ancoragem de escavações subterrâneas em maciços rochosos. Referem-se os aspectos cruciais do problema relativamente a túneis e aproveitamentos hidroeléctricos, define-se o conceito de sistema óptimo de ancoragem e sugerem-se directrizes que poderão conduzir a significativa economia em relação à utilização de alguns critérios clássicos de dimensionamento.
Análise cartográfica da estabilidade de taludes para o planeamento urbano
Authors: Coelho António
Published: October 2022

O artigo descreve a metodologia utilizada na cartografia de zonas afectadas por riscos de instabilidade de taludes, aplicada à área do concelho de Vila Franca de Xira, baseada no inventário e classificação dos diferentes factores intervenientes na estabilidade e na utilização da foto-interpretação como meio de avaliação integrada destes factores.
A utilização de telas, tecidas e não-tecidas, em obras de engenharia civil
Authors: Folque José
Published: October 2022

A crescente utilização de telas em obras de engenharia civil leva a que se considere oportuno passar em revista algumas das suas características.  Os ensaios de laboratório para determinação e controle de propriedades são sucintamente descritos. Apresentam-se por fim comentários sobre os possíveis campos de aplicação.
Armazenamento em cavernas - problema da interacção entre os produtos armazenados e os maciços rochosos
Authors: Rocha Manuel
Published: October 2022

São apresentadas as interacções mais relevantes entre os produtos armazenados em cavernas e os maciços rochosos, e feita a sua apreciação, à luz das comunicações apresentadas ao Simpósio Rockstore 77.
O penetrómetro estático na determinação dos limites de liquidez e de plasticidade
Authors: Presa Erundino
Published: October 2022

Estuda-se a conveniência do ensaio de penetração estática com cone de laboratório para a determinação dos limites de Atterberg.

Comparam-se os resultados dos ensaios obtidos pelos métodos clássicos e pelo processo não convencional, supra referido, para a determinação dos limites de liquidez e de plasticidade.

Ante os resultados obtidos, conclui-se que o processo de penetração com cone é muito promissor, rápido e de boa precisão, onde o factor humano adquire importância secundária.
Cálculo de barragens de terra em relação a solicitações sísmicas
Authors: Folque José
Published: October 2022

Passa-se  em  revista  e  comenta-se   a  metodologia   de  dimensionamento  de  barragens de terra, em relação a solicitações sísmicas, que sobretudo visa avaliar as deformações residuais ocorrentes. Chama-se a atenção para a pesquisa das características não lineares intervenientes nos cálculos. O estudo inicia-se, por processo incremental, pela averiguação das tensões e extensões ocorrentes na barragem antes do sismo. Tomando esta situação como base calculam-se as extensões potenciais induzidas pelo sismo. Aplicando nos elementos as forças correspondentes às extensões potenciais, actuando como forças permanentes, caculam-se por fim as deformações remanescentes. Comenta-se a técnica de realização de ensaios de laboratório com solicitações cíclicas.
Açude-ponte de Coimbra - Cortina Delgada da margem direita
Authors: Dias Helder
Published: October 2022

Descreve-se a cortina delgada realizada na margem direita, como elemento complementar da ensecadeira necessária ao encabeçamento dos pegões para construção da super-estrutura.
Determinação da velocidade de propagação da onda de corte entre furos de sondagem
Authors: Fialho Rodrigues Luís
Published: October 2022

Refere-se a utilização de ensaios sísmicos, entre furos de sondagem, para determinação da velocidade de propagação da onda de corte. Apresentam-se e descrevem-se os equipamentos utilizados, especialmente uma fonte mecânica, denominada "martelo sísmico", que permite inverter o sentido da solicitação e facilita a identificação do instante de chegada da onda de corte. Descreve-se ainda a técnica de condução dos ensaios e apresentam-se e discutem-se os resultados obtidos em três locais com diferentes características geológicas.
Comportamento de materiais compactados à luz de experiência em grandes barragens
Authors: Mello Victor
Published: October 2022

Dentro da necessidade de fechar o ciclo de previsões de comportamento, baseadas em ensaios-índice e ensaios-convencionais de laboratório, analisam-se os comportamentos médios, em compressibilidade, de aterros argilosos compactados, e de enrocamentos sãos compactados. Justificase reconhecer a compactação como a incorporação de uma pressão de pré-adensamento. Extraem-se regressões estatísticas de ensaios edométricos sobre blocos indeformados de solos argilosos insaturados compactados: as obras, porém, indicam compressibilidade bem menor. Enrocamentos sãos angu­ lares compactados também evidenciam pressões nominais de pré-adensamento: todavia apresentam módulos menores do que seriam intuitivamente previstos.
Força de impulso em repouso em obras de suporte
Authors: Ferreira H. Novais
Published: October 2022

São indicadas as hipóteses iniciais que correspondem à situação de impulso em repouso, as  quais justificam a utilização da teoria da elasticidade.

É referida a equação de Jaky para o coeficiente de impulso repouso de solos normalmente consolidados, e comparado o valor da tensão efectiva horizontal o 0 com os valores das tensões efectivas que de uma situação de impulso activo, no mesmo solo.

É discutida a base teórica de cálculo das tensões e forças de impulso em repouso para os casos de superfície livre do maciço horizontal e inclinada, e para paramentos da obra de suporte verticais e inclinados em relação à vertical. Apresentam-se as equações que permitem o cálculo de tensões e forças.
A consideração dos vazios e da anisotropia num estudo de heterogeneidade
Authors: Charrua-Graça José
Published: October 2022

Em anterior trabalho foi feita uma tentativa de teorização da heterogeneidade e sua influência no eleito de escala. Nessa altura dois problemas ficaram em aberto nomeadamente os efeitos anisotrópicos e as inclusóes vazias ou quase-vazias. Retomam-se aqui esses problemas e apresenta-se uma tentativa de solução.
Um conceito de «medida de heterogeneidade»
Authors: Charrua-Graça José
Published: October 2022

Propõe-se um conceito de «medida de heterogeneidade» que permita classificar quanto àquela propriedade diferentes corpos.