bluuebunny/crossref_metadata_2025 huggingface dataset:
A cost-effectiveness assessment of dual-mobility bearings in revision hip arthroplasty
Authors: Khoshbin Amir , Haddad Fares S. , Ward Sarah , O hEireamhoin S. , Wu James , Nherera Leo , Atrey Amit
Published: August 2020

Aims

The rate of dislocation when traditional single bearing implants are used in revision total hip arthroplasty (THA) has been reported to be between 8% and 10%. The use of dual mobility bearings can reduce this risk to between 0.5% and 2%. Dual mobility bearings are more expensive, and it is not clear if the additional clinical benefits constitute value for money for the payers. We aimed to estimate the cost-effectiveness of dual mobility compared with single bearings for patients undergoing revision THA.

Methods

We developed a Markov model to estimate the expected cost and benefits of dual mobility compared with single bearing implants in patients undergoing revision THA. The rates of revision and further revision were calculated from the National Joint Registry of England and Wales, while rates of transition from one health state to another were estimated from the literature, and the data were stratified by sex and age. Implant and healthcare costs were estimated from local procurement prices and national tariffs. Quality-adjusted life-years (QALYs) were calculated using published utility estimates for patients undergoing THA.

Results

At a minimum five-year follow-up, the use of dual mobility was cost-effective with an estimated incremental cost-effectiveness ratio (ICER) of between £3,006 and £18,745/QALY for patients aged < 55 years and between 64 and 75 years, respectively. For those aged > 75 years dual mobility was only cost-effective if the timeline was beyond seven years. The use of dual mobility bearings was cost-saving for patients aged < 75 years and cost-effective for those aged > 75 years if the time horizon was beyond ten years.

Conclusion

The use of dual mobility bearings is cost-effective compared with single bearings in patients undergoing revision THA. The younger the patient is, the more likely it is that a dual mobility bearing can be more cost-effective and even cost-saving. The results are affected by the time horizon and cost of bearings for those aged > 75 years. For patients aged > 75 years, the surgeon must decide whether the use of a dual mobility bearing is a viable economic and clinical option. Cite this article: Bone Joint J 2020;102-B(9):1128–1135.
Una còpia manuscrita de Porperci (Vat. Lat. 3274) amb un epígraf singular
Authors: Mayer Marc
Published: August 2020

El manuscrit Vaticanus latinus 3274 conté en el seu foli 111 verso un singular epígraf de mà del seu copista, al menys parcial, en honor del propietari Parthenius Minutius Paulinus.La inscripció podria inspirar-se en la Hypnerotomachia Poliphili, la qual cosa demostraria que el contingut de aquesta obra potser era conegut ja abans de la seva publicació en els cercles intel·lectuals de Roma i més concretament en el entorn immediat de Pomponio Leto.
La boca de Pantagruel: una imatge de Rabelais heretada de la ficció llucianesca
Authors: Solé Gimeno David
Published: August 2020

Llucià  de  Samòsata  influí  destacablement  en  diversos  autors  del  Renaixement  com  François  Rabelais.  El  metge  francès  sabé  extreure  del  polèmic  escriptor  de  la  Segona  Sofística  tota  la  seva  essència  més  satírica  i  mordaç  així  com  també  l’afició  (sempre  amb  un  rerefons  crític)  a  les  narracions  de  viatges.  Una  de  les  analogies  que,  en  aquest  darrer  aspecte,  evidencien  estudiosos  de  l’obra  del francès  i  del  de  Samòsata  és  la  que  existeix  entre  la  descripció  de  l’interior  de  la  boca  del  gegant  Pantagruel en el seu Gargantua i Pantagruel i  la  de  la  balena  que  habiten  els  protagonistes  dels  Relats  Verídics.  El propòsit d’aquest article consisteix a analitzar  els  paral·lels  entre  ambdós  episodis,  tot  justificant  com  Rabelais  fa efectiva una vívida  ficció  amb  l’ús  de  diversos procediments heretats  de Llucià.
'El resto de la vida' o una nova recreació del mite d'Orfeu i Eurídice
Authors: González Senmartí Antoni
Published: August 2020

Aquest article està dedicat al Dr. Pau Gilabert Barberà, una de les persones més qualificades i competents en tradició clàssica, amb motiu de la seva jubilació com a professor de la Universitat de Barcelona després de més de quaranta anys d’haver-hi impartit el seu mestratge. L’objectiu del treball és analitzar la novel·la de l’escriptora Ángeles Caso, El resto de la vida, una recreació del mite clàssic d’Orfeu i Eurídice a les acaballes del segle XX, a partir de les múltiples referències i cites d’autors grecs i llatins que s’hi inclouen, així com del tractament que s’hi fa del mite. Es completa l’anàlisi amb una introducció sobre el polifacètic personatge d’Orfeu i la seva influència en la cultura occidental a través de les Arts.
Virgilio, Ovidio y, quizá, Valerio Flaco en un nuevo fragmento de inscripción romana procedente de Tarraco
Authors: Gorostidi Pi Diana
Published: August 2020

Presentamos un nuevo fragmento de inscripción funeraria procedente de la antigua Tarraco con parte de un carmen epigraphicum en hexámetros dactílicos. A pesar del poco texto conservado, el contenido permite identificar un centón a partir del repertorio poético de Virgilio y Ovidio, y quizá también de Valerio Flaco.
Los ilirios y albaneses en las fuentes literarias griegas y romanas
Authors: Blanco López Ricardo
Published: August 2020

La intención de este artículo es recopilar y analizar las fuentes literarias griegas y romanas más representativas que recogen información del pueblo ilirio y la mención a los albaneses como posible tribu iliria en las fuentes literarias griegas.
Control de la privacidad por parte de las autoridades sanitarias ante situaciones de emergencia
Authors: Rodríguez Ayuso Juan Francisco
Published: August 2020

El presente estudio ofrece una investigación sistemática, exhaustiva y actualizada del tratamiento de datos personales relativos a la salud de los ciudadanos afectados y/o potencialmente afectados por la situación excepcional derivada del COVID-19. Para ello, y tomando en consideración toda la normativa, general y sectorial, aplicable en materia de protección de datos y de sanidad, se procede al análisis de las bases legitimadoras procedentes y de las excepciones que, aplicables a situaciones de emergencia sanitaria como la actual, habilitan el tratamiento atendiendo a la naturaleza de quien intervenga como responsable, haciendo especial énfasis en el interés público perseguido por las Administraciones Públicas y en el interés vital del propio interesado.
Datos en tiempos de pandemia: la urgencia de un nuevo pacto. Reflexiones desde América Latina y el Caribe
Authors: Sorokin Patricia , Sotomayor Saavedra María Angélica , Bórquez Polloni Blanca , Martí Myrna , Duro Alejandro , Quiroz Malca Estela , Muñoz del Carpio Toia Águeda , Duro Eduardo A. , Czubaj Fabiola , Rueda Laura , Benites Estupiñan Elizabeth M. , Putallaz Paula Romina , Resett Santiago A. , Gubert Ida Cristina , López Dávila Luis M. , Mpolás Andreadis Alejandra , Andreau de Bennato Mirtha , Vergès Claude
Published: August 2020

Los avances de las Tecnologías de la Información y la Comunicación (TIC) permiten acceder en tiempo real a una cantidad ingente de datos, a través de los cuales es posible conocer el comportamiento de hechos sociales. En este escenario, la actual pandemia por SARS-CoV-2 ha permitido, bajo cuestionables criterios de inmediatez y urgencia, circular información que genera realidad e impacta en la toma de decisiones; y, además, ha favorecido la apropiación del dato, exponiendo a las personas a violaciones de sus derechos fundamentales. Ambos asuntos son sensibles para América Latina y el Caribe, región que hoy se presenta no sólo como el epicentro de la pandemia sino también de las desigualdades. La contribución que desde la reflexión y deliberación bioética puede realizarse en esta materia, adquiere especial relevancia con vistas a generar un nuevo pacto para el tratamiento de los datos.
El COVID-19 como riesgo global
Authors: Monzón José María
Published: August 2020

El COVID-19 tanto como pandemia como cuanto riesgo global reta a los sistemas de salud pública de los Estados. Pero también este acontecimiento desafía a los principios de la bioética de origen occidental y muestra sus límites lo que demanda por un nuevo conjunto de principios fundados en la ontología y en un orden moral objetivo.
Robust polarimetry via convex optimization
Authors: Leamer Jacob M. , Zhang Wenlei , Saripalli Ravi K. , Glasser Ryan T. , Bondar Denys I.
Published: August 2020

We present mathematical methods, based on convex optimization, for correcting non-physical coherency matrices measured in polarimetry. We also develop the method for recovering the coherency matrices corresponding to the smallest and largest values of the degree of polarization given the experimental data and a specified tolerance. We use experimental non-physical results obtained with the standard polarimetry scheme and a commercial polarimeter to illustrate these methods. Our techniques are applied in post-processing, which complements other experimental methods for robust polarimetry.
Analysis of retinal nerve fiber layer birefringence in patients with glaucoma and diabetic retinopathy by polarization sensitive OCT
Authors: Desissaire Sylvia , Pollreisz Andreas , Sedova Aleksandra , Hajdu Dorottya , Datlinger Felix , Steiner Stefan , Vass Clemens , Schwarzhans Florian , Fischer Georg , Pircher Michael , Schmidt-Erfurth Ursula , Hitzenberger Christoph K.
Published: August 2020

The retinal nerve fiber layer (RNFL) is a fibrous tissue that shows form birefringence. This optical tissue property is related to the microstructure of the nerve fiber axons that carry electrical signals from the retina to the brain. Ocular diseases that are known to cause neurologic changes, like glaucoma or diabetic retinopathy (DR), might alter the birefringence of the RNFL, which could be used for diagnostic purposes. In this pilot study, we used a state-of-the-art polarization sensitive optical coherence tomography (PS-OCT) system with an integrated retinal tracker to analyze the RNFL birefringence in patients with glaucoma, DR, and in age-matched healthy controls. We recorded 3D PS-OCT raster scans of the optic nerve head area and high-quality averaged circumpapillary PS-OCT scans, from which RNFL thickness, retardation and birefringence were derived. The precision of birefringence measurements was 0.005°/µm. As compared to healthy controls, glaucoma patients showed a slightly reduced birefringence (0.129 vs. 0.135°/µm), although not statistically significant. The DR patients, however, showed a stronger reduction of RNFL birefringence (0.103 vs. 0.135°/µm) which was highly significant. This result might open new avenues into early diagnosis of DR and related neurologic changes.
Experimental optimization of X-ray propagation-based phase contrast imaging geometry
Authors: Dierks Hanna , Wallentin Jesper
Published: August 2020

Propagation-based phase contrast imaging (PB-PCI) with an X-ray lab source is a powerful technique to study low absorption samples, e.g. soft tissue or plastics, on the micrometer scale but is often limited by the low flux and coherence of the source. The setup geometry is essential for the performance since there is a trade-off where a short source distance yields a high contrast-to-noise ratio (CNR) but a low relative fringe contrast. While theoretical optimization strategies based on Fresnel propagation have been reported, there is a need for experimental testing of these models. Here, we systematically investigate this trade-off experimentally using two different setups with high-resolution detectors: a custom-built system with a Cu X-ray source and a commercial system (Zeiss Xradia) with a W source. The fringe contrast, CNR and fringe separation for a low-absorption test sample were measured for 130 different combinations of magnification and overall distances. We find that these figures-of-merit are sensitive to the magnification and that an optimum can be found that is independent of the overall source-detector distance. In general, we find that the theoretical models show excellent agreement with the measurements. However, this requires the complicated X-ray spectrum to be considered, in particular for the broadband W source.
Ultra-efficient and fully isotropic monolithic microring modulators in a thin-film lithium niobate photonics platform
Authors: Bahadori Meisam , Yang Yansong , Hassanien Ahmed E. , Goddard Lynford L. , Gong Songbin
Published: August 2020

The large electro-optic coefficient, r33, of thin-film lithium niobate (LN) on insulator makes it an excellent material platform for high-efficiency optical modulators. Using the fundamental transverse magnetic optical mode in Z-cut LN enables isotropic in-plane devices; however, realizing a strong vertical electric field to capitalize on r33 has been challenging. Here we present a symmetric electrode configuration to boost the vertical field strength inside a fully-etched single-mode LN waveguide. We use this design paradigm to demonstrate an ultra-compact fully isotropic microring modulator with a high electro-optic tuning efficiency of 9 pm/V, extinction ratio of 20 dB, and modulation bandwidth beyond 28 GHz. Under quasi-static operation, the tuning efficiency of the modulator reaches 20 pm/V. Fast, efficient, high-contrast modulation will be critical in future optical communication systems while large quasi-static efficiency will enable post-fabrication trimming, thermal compensation, and even complete reconfiguration of microring-based sensor arrays and photonic integrated circuits.
Single-shot ptychography with highly tilted illuminations
Authors: Chang Chengcheng , Pan Xingchen , Tao Hua , Liu Cheng , Veetil Suhas P , Zhu Jianqiang
Published: August 2020

A single-shot ptychographic iterative engine (PIE) using highly tilted illumination is proposed to realize accurate phase retrieval from a single frame of multiple and non-overlapping sub-diffraction patterns generated by a bunch of laser beams propagating at greater angles with respect to the optical axis. A non-paraxial reconstruction algorithm is developed to numerically propagate these highly tilted laser beams in back and forth iterative computations. Faster data acquisition and higher reconstruction quality are achieved in the proposed method by recording non-overlapping sub-diffraction patterns in a single frame and eliminating usual reconstruction errors arising from paraxial approximations.
Geometry phase for generating multiple focal points with different polarization states
Authors: Yuan Yinghao , Yao Bingshuang , Cao Jiawei , Zang Xiaofei , Yu Dahai , Balakin Alexei V. , Shkurinov Alexander P. , Zhu Yiming
Published: August 2020

Conventional lenses are always large and bulky to achieve desired wave-manipulating functions, hindering the development of integrated and miniaturized optical systems. Metasurfaces, two-dimensional counterparts of metamaterials, can accurately tailor the wavefront of electromagnetic waves at subwavelength scale, providing a flexible platform for designing ultra-compact and ultra-flat lenses, namely as metalenses. However, the previous geometry-phase-based metalenses usually generate focal point(s) with only one special polarization state, i.e., either linearly-polarized (LP) state or circularly-polarized (CP) state, which inevitably degrades further applications. Here, we propose and experimentally demonstrate an approach for designing terahertz (THz) metalenses based on geometry phase that can generate multiple focal points with different polarization states. Under the illumination of LP THz waves, three focal points with left-hand CP (LCP), right-hand CP (RCP) and LP states are observed. Furthermore, the position of each focal point can be flexibly manipulated in free space. Geometry metasurfaces consisting of micro-rods with the same shape but different in-plane orientations are fabricated to demonstrate these properties. This unique approach may enable an unprecedented capability in designing multifunctional THz devices with potential applications in imaging, detecting and communications.
Self-calibrated optical vector analyzer with a largely extended measurement range based on linearly frequency-modulated waveform and recirculating frequency shifter
Authors: Wang Bin , Zhang Weifeng , Fan Xinyu
Published: August 2020

We propose and experimentally demonstrate a novel method to realize an optical vector analyzer (OVA) with a largely increased measurement range based on linearly frequency-modulated (LFM) waveform and a recircuiting frequency shifter (RFS) loop. An optical LFM signal is sent into an RFS loop to extend its frequency range by circulating in the loop. At the output of the RFS, the frequency-extended optical LFM signal is launched into a Mach-Zehnder interferometer (MZI1) with the device under test (DUT) incorporated in one arm and a delay line in the other arm. By beating the optical signals from the MZIs at a pair of balanced photodetectors, low-frequency signals are generated, from which the frequency responses of the DUT can be extracted using post-digital signal processing. To eliminate the unwanted influence from the measurement system, another MZI (MZI2) sharing the delay line arm with the MZI1 is used for system self-calibration. Thanks to the largely extended frequency range of the optical LFM signal with the use of the RFS loop, the measurement range of the OVA is highly increased. As a proof of the concept, an experiment is performed in which the magnitude and phase responses of a narrow-band fiber ring resonator (FRR) and a hydrogen cyanide (HCN) gas chamber are measured with the proposed OVA. The measurement results show that a measurement range as broad as 418 GHz and a frequency resolution as high as 0.5 MHz are achieved with a measurement time as short as 400 µs. The key advantages of the proposed OVA include a largely extended measurement range, high measurement speed and high resolution.
Goos-Hänchen and Imbert-Fedorov shifts of off-axis Airy vortex beams
Authors: Gao Mingsheng , Wang Guanghui , Yang Xiangbo , Liu Hongzhan , Deng Dongmei
Published: August 2020

Based on the angular spectrum of high order off-axis Airy vortex beams (AiVBs), Goos-Hänchen (GH) shifts and Imbert-Fedorov (IF) shifts near the Brewster angle are numerically calculated. It is found that both GH and IF shifts increase with the increase of the vortex’s topological charge of AiVBs. The influences of the vortex’s positions on GH and IF shifts are studied for the case of the topological charge m = 1. The studies of the off-axis vortex show that the influences of the vortex’s position on shifts are inversely proportional to the distance between the vortex’s position and the origin point.
Complementary photonic crystal integrated logic devices
Authors: Pedraza Caballero Luis , Povinelli Michelle L. , Ramirez Jhonattan C. , Guimarães Paulo S. S. , Vilela Neto Omar P.
Published: August 2020

We theoretically propose and demonstrate through numerous simulations complementary photonic crystal integrated logic (CPCL) devices. Simulation results provide demonstration of a highly efficient clock rate, higher than 20 GHz, guaranteeing operation at both input and output with the same wavelength (around

λ
=
1550

n
m

). The proposed devices show well-defined output power values representing the two logic states 1 and 0, with a contrast ratio as high as 6 dB. The results presented here provide countless possibilities for future research, targeting the development of photonic crystal logic and communications systems with CPCLs acting as the core hardware devices.
Photo-magnetic recording of randomized holographic diffraction patterns in a transparent medium
Authors: Starobrat Joanna , Frej Antoni , Bolek Jan , Jan Trybus Rafał , Stupakiewicz Andrzej , Makowski Michał
Published: August 2020

Reconstructions from computer-generated holograms exhibit spurious duplicate images corresponding to higher diffractive orders, originating from the periodic pixels of a spatial light modulator. We explore the possibility of reducing their visibility by randomization of pixel positions at the stage of displaying of the holograms. Experimental validation is shown on a liquid crystal modulator and also in a promising photo-magnetic transparent cobalt-doped yttrium iron garnet, which exhibits spontaneous randomization of written patterns. Micromirror-driven raster scanning of femtosecond pulses is used for point-by-point rewriting of magnetic domains. Recorded holographic patterns diffract visible light beams in accordance with theory and numerical simulations.
Perfect Laguerre–Gauss beams
Authors: Mendoza-Hernández Job , Hidalgo-Aguirre Maribel , Inclán Ladino Adriana , Lopez-Mago Dorilian
Published: August 2020

Perfect vortex beams (PVBs) have intensity distributions independent of their topological charges. We propose an alternative formulation to generate PVBs through Laguerre–Gauss beams (LGBs). Using the connection between Bessel and LGBs, we formulate a modified LGB that mimics the features of a PVB, the perfect LGB (PLGB). The PLGB is closer to the ideal PVB, maintaining a quasi-constant ring radius and width. Furthermore, its number of rings can be augmented with the order of the Laguerre polynomial, showing an outer ring independent of the topological charge. Since the PLGB comprises a paraxial solution, it is closely related to an experimental realization, e.g.,  using spatial light modulators [Phys. Rev. A 100, 053847 (2019)PLRAAN1050-294710.1103/PhysRevA.100.053847].
Fast Brillouin optical time-domain reflectometry using the optical chirp chain reference wave
Authors: Ba Dexin , Wang Benzhang , Li Tianfu , Li Yijia , Zhou Dengwang , Dong Yongkang
Published: August 2020

A new technique for the fast implementation of Brillouin optical time-domain reflectometry has been proposed and demonstrated with the optical chirp chain (OCC) reference wave. By using the fixed bandpass filter and envelope detection, the spontaneous Brillouin spectrum can be online demodulated in the time domain for truly distributed, one-end access and fast measurement. The measurement time is only limited by the pulse repetition rate and averaging times. For a 400 m single-mode fiber, a

31.58

H
z

strain vibration on a 2 m fiber segment is measured for a wide dynamic range (

∼

3200

µ
ε

) with an equivalent sampling rate of

200

H
z

when 200 times of averaging is performed. Furthermore, the performance on the measurement accuracy is investigated with different OCC frequency spans and durations.
Anomalous bi-directional scanning electro-optic KTN devices with UV-assisted electron and hole injections
Authors: Chen Chang-Jiang , Shang Annan , Lee Yun Goo , Chao Ju-Hung , Liu Ruijia , Yin Shizhuo , Hoffman Robert C.
Published: August 2020

In this Letter, we reported anomalous electro-optic potassium tantalate niobate (KTN) devices, in which both electrons and holes were injected into the KTN crystal via ultraviolet (UV) illumination-assisted charge injection. This could not only significantly enhance the performance of electro-optic devices (e.g., a 270% increase in the deflection angle in terms of the KTN deflector) but also enable the new bi-directional scanning capability. The results in this work would be very useful for a variety of devices and applications, such as electro-optic based vari-focal lenses.
Improved light extraction in all-inorganic perovskite light-emitting devices with periodic nanostructures by nanoimprinting lithography
Authors: Guo Shuang , Liu Yu-Shan , Zhang Xu-Lin , Liu Yue-Feng , Bi Yan-Gang , Wen Xue-Mei , Feng Jing , Sun Hong-Bo
Published: August 2020

We report an improved light extraction in all-inorganic perovskite light-emitting devices (PeLEDs) by integrating a periodic corrugated nanostructure at the metallic cathode/organic interface. Nanoimprinting lithography was used to introduce the nanostructures onto the surface of the electron transport layer directly to avoid influencing the morphology and crystallinity of the perovskite film underneath. The trapped energy at the metallic electrode has been successfully outcoupled by the excitation of the surface plasma polariton (SPP) modes induced by the periodic corrugations. The luminance and current efficiency of the periodically corrugated PeLED exhibit enhancements of 42% and 28%, respectively, compared to those of the planar PeLED. The finite-difference time-domain simulation was used to confirm the efficient outcoupling of the SPP modes.
Modified deep-learning-powered photonic analog-to-digital converter for wideband complicated signal receiving
Authors: Xu Shaofu , Wan Jun , Wang Rui , Zou Weiwen
Published: August 2020

We propose and demonstrate a modified deep-learning-powered photonic analog-to-digital converter (DL-PADC) in which a neural network is used to eliminate the signal distortions of the photonic system. This work broadens the receiving capability from simple waveforms to complicated waveforms via implementing a modified deep learning algorithm. Thus, the modified DL-PADC can be applied in real scenarios with wideband complicated signals. Testing results show that the trained neural network eliminates the signal distortions with high quality, improving the spur-free dynamic range by

∼

20

d
B

. An experiment for echo detection is conducted as an example, which shows that the neural network enhances the quality of detailed target profile detection. Furthermore, the modified DL-PADC only comprises a low-complexity photonic system, which obviates the requirement for redundant hardware setup while maintaining the processing quality. It is expected that the modified DL-PADC can perform as a promising photonic wideband signal receiver with low hardware complexity.
Chemical vapor deposition synthesized monolayer MoS2 for Q-switching pulse generation in the 2 µm spectral region
Authors: Shang Jingcheng , Feng Tianli , Zhao Shengzhi , Li Tao , Ma Jie , Xu Xiaomin , Koch Norbert , Zhao Jia
Published: August 2020

We demonstrate a monolayer MoS2-based saturable absorber (SA) synthesized by chemical vapor deposition (CVD). The as-grown SA has high spatial homogeneity and shows excellent saturable absorption properties in the 2 µm wavelength region. A higher modulation depth of 21.3% and lower saturation intensity of 0.47 MW/cm2 are achieved compared with those of other documented MoS2 SAs to date. When applying the MoS2 SA to a Tm:YAG ceramic laser, we observe a Q-switched pulse train with a shortest pulse duration of 388.0 ns under a pulse repetition rate of 82 kHz, which corresponds to a single pulse energy of 5.4 uJ and a peak power of 14 W. We believe that CVD constitutes an effective method towards high-quality MoS2 saturable absorbers that possess remarkable application potential in the 2 µm wavelength region.
O currículo do Projovem Campo-MT e o diálogo com a educação ambiental: desafios entre políticas e práticas camponesas
Authors: Senra Ronaldo Eustáquio Feitoza , Sato Michele Tomoko , Quadros Imara Pizzato
Published: August 2020

O presente artigo pretende refletir sobre a inserção da Educação do Campo no Campus São Vicente do IFMT. Nesta pesquisa, abordamos a Especialização lato sensu “Projovem Campo: saberes e fazeres da terra”. O objetivo é descrever o currículo do Projovem Campo como eixo central das discussões, em diálogo com a Educação Ambiental. Optamos pelo estudo de caso na descrição do processo formativo e lançamos um olhar crítico sobre o material didático da especialização usado para discutir sustentabilidade e assuntos corelacionados à temática ambiental. Como resultado, foi possível perceber a dimensão do programa nas comunidades enquanto política pública e discutirmos a dimensão curricular em diálogo com a Educação Ambiental.
Fundamentos para a educação ambiental crítica nos cursos de licenciatura em educação do campo: a experiência da UFBA
Authors: Peneluc Magno Da Conceição , Moradillo Edilson Fortuna de , Siqueira Rafael Moreira
Published: August 2020

Tratou-se dos pressupostos ontológicos, éticos e político-pedagógicos para a implementação da Educação Ambiental Crítica nos cursos de Licenciatura em Educação do Campo, tendo como referência a experiência desenvolvida na Universidade Federal da Bahia (Ufba). O curso teve sua matriz curricular referenciada no materialismo histórico-dialético, tendo como moduladores os princípios da ontologia do ser social, com base na categoria trabalho como fundante do ser social, na economia política a partir da teoria do valor-trabalho e na Pedagogia Histórico-Crítica. Priorizamos a explicitação da concepção de ser social e de meio ambiente com base na perspectiva sócio-histórica, dialética, fundamento primaz do curso; e, em particular, no componente curricular Educação Socioambiental, no qual se discute as implicações históricas das categorias e concepções de natureza, sociedade, conhecimento, ciência e educação.
Apresentação do "Dossiê: Pesquisas e Práticas em Educação Ambiental e Educação do Campo"
Authors: Andreoli Vanessa , Borges Marcelo Gules
Published: August 2020

Este dossiê, em alguma medida, representa o esforço de sistematização na área acadêmica daquilo que já vem sendo realizado no contexto do rural brasileiro, tanto em termos do que hoje significa o movimento da Educação Ambiental no país bem como do Movimento de Educação do Campo em seus diferentes territórios de luta (comunidades do campo, das florestas e das águas, no bojo dos movimentos sociais, das comunidades rurais, das escolas do campo, dos institutos federais), das escolas família agrícolas, dos progra-mas como o Programa Nacional de Educação na Reforma Agrária (Pronera), Programa de Apoio à Formação Superior em Licenciatura em Educação do Campo (Procampo), Programa Nacional de Educação do Campo (Pronacam-po), e diversos âmbitos das pesquisas em pós-graduação.
Participação em atividades de educação ambiental: indícios de sua qualificação a partir de uma investigação-ação no arquipélago de Fernando de Noronha - PE
Authors: Battaini Vivian , Peres Isabela Kojin , Sorrentino Marcos
Published: August 2020

O presente trabalho traz reflexões sobre a possível qualificação da participação em atividades de educação ambiental a partir de uma pesquisa inspirada na pesquisa intervenção e na etnográfica feita no Distrito Estadual de Fernando de Noronha – Pernambuco. Foram realizadas intervenções educadoras ambientalistas junto à comunidade escolar e entrevistas com distintos atores sociais do território. Nos resultados são apresentadas estratégias de ensino aprendizagem comprometidas com os conceitos de identidade, diálogo, comunidade, potência de ação e felicidade que contribuem para o desenvolvimento e fortalecimento da participação. Por fim, apresentam-se caminhos da participação que podem subsidiar ações, projetos, programas e políticas públicas de educação ambiental que contribuam para a transição para sociedades sustentáveis.
“Mulher pesca sim!” Desigualdade, invisibilidade e conflitos socioambientais em contextos lagunares no Rio Grande do Sul
Authors: Martins da Silva Liza Bilhalva , Adomilli Gianpaolo Knoller
Published: August 2020

Este artigo objetiva apresentar algumas reflexões a partir de uma pesquisa etnográfica junto a pescadoras artesanais embarcadas da Lagoa Mirim e do estuário da Lagoa dos Patos considerando as experiências concretas que apontam um contexto de invisibilidade, exclusão e conflitos socioambientais. A estrutura do artigo apresenta inicialmente como o tema da pesca, a partir das categorias de análises Gênero e Mulher tem se desenvolvido tanto pela academia quanto pelo Estado brasileiro, seguindo na análise das invisibilidades, desigualdades e os conflitos socioambientais experienciados por essas trabalhadoras. Por fim, fazemos uma reflexão sobre as possibilidades da Educação Ambiental, enquanto modos de aprender e se relacionar no ambiente a partir das vivencias das pescadoras, configurando um contexto de interlocução com diferentes saberes e práticas compartilhadas por grupos que vivem e habitam o ambiente lagunar costeiro.
Educação pela cidade e a formação de professores: mediações fotográficas na apreensão das questões socioambientais
Authors: Santos Manuella Teixeira , Raposo Elinete Oliveira , Freitas Nadia Magalhães da Silva
Published: August 2020

O texto apresenta os resultados de pesquisa que buscou responder à pergunta: que contribuições à formação de professores as mediações fotográficas trazem para a compreensão de questões socioambientais na premissa de uma educação pela cidade? Exploramos a cidade de Belém, em um City Tour pedagógico, mediante registros fotográficos de suas paisagens e elaboração de textos críticos, na leitura destes registros. As leituras das fotografias permitiram a apreensão de “várias cidades”: (1) a cidade negligenciada; (2) a cidade das contradições; (3) a cidade que necessita pensar mais na natureza e (4) a cidade que revela singularidades, evoca memórias e se insere na contemporaneidade”. De um olhar desatento, um olhar sem ver, os professores passaram a perceber a cidade como espaço de confronto com a realidade, na apreensão das questões socioambientais, interrogando este estado de coisas, e permitindo sua concreta inserção no cenário citadino.
Plasma Activated Synthesis of Macromolecular Compound
Authors: Chernyak V. , Iukhymenko V. , Iukhymenko K. , Prysiazhna O. , Hamazin D. , Oberemok E. , Kyslenko V. , Liptuga A.
Published: August 2020

The paper is devoted to study of the plasma-activated synthesis of organic compounds with optically activity. Synthesis was carried out in plasma-liquid system with a rotating gliding discharge submerged in a liquid. The initial reagents of synthesis were ethanol, ammonia, and CO2. The possibility of the inﬂuence of the electric ﬁeld direction on the optical activity of the products of plasma-activated synthesis is shown.
Pandemics, Health Behavior and Tourism
Authors: PODVORICA Ganimete , RRUSTEMI Visar
Published: August 2020

The current paper examines if respondents that take strict prevention measures against COVID-19, with higher monthly incomes and that have spent their summer vacations in Albania last year are significantly more likely to plan their summer vacations to Albania this summer relative to those that are neglecting prevention measures, have lower incomes and have not chosen Albania as their destination for summer vacations last year. The study employs a survey of 500 random respondents. A multivariate analysis indicated that scores of planning summer vacations were significantly associated with the present strict prevention behavior measures against COVID-19 indicating the existence of sufficient motivation for future behavior intentions. In contrasts, monthly income is not a predictor for planning summer vacations. Finally, the correlation is positive between respondent’s previous experience to touristic destinations in Albania last year and planning summer vacations this year. Hence, it is recommended a thoughtful examination of respondents’ health behaviors, needs, wants and collaboration in shaping the better future of public health that is a shared one.
Dynamics of Vegetation of High Mountain Areas of the Northern Tian Shan under Different Protection and Economic Use Regimes
Authors: IMANKULOVA Sofia K. , SHALABAYEV Karatay I. , MUSSAEV Kuandyk L. , ISSABEKOV Beibit M. , AMANBEKOVA Dinara M.
Published: August 2020

The territory of Kazakhstan is located in the center of the continent of Eurasia and has a considerable area of 272.5 million ha. This geographical position predetermines a great variety of species of flora and fauna. This research presents the results of studies of the current state of vegetation of the high mountain valley Kok Zhailau, located in the central part of the Ile (Zailiysky) Alatau ridge (Northern Tian Shan), in different modes of its economic use and protection. In the process of the field survey of the territory, classical methods of route floristic and geo-botanical studies were used. The spatial structure and current state of vegetation was studied using methods of detailed path research. A brief description of distribution of the main types of vegetation in high altitude zones was provided. Particular attention is paid to the analysis of coniferous forests from relict spruce Schrenka or Tian Shan (Picea schrenkiana Fisch & C.A. Mey). Recommendations were given on the protection of vegetation and the conservation of biodiversity in the face of an increasing anthropogenic impact, in connection with the proximity of the territory to the metropolis of Almaty. The survey demonstrated that, in general, the vegetation cover in the Kok Zhailau valley was to some extent transformed, and in its natural (background) state it was preserved only in hard-to-reach areas, mainly in the upper part of the mountains (steep slopes of the Kumbel ridge, river valleys, etc.).
BİYOKAPİTALİZM VE BEDEN SİMSARLIĞI: GÜNÜMÜZDE BEDEN TİCARETİNİN MESLEKLEŞMESİ
Authors: ARPACI Murat
Published: August 2020

Bu çalışma, neoliberalleşme ve biyopolitika arasındaki ilişkiyi iki kavram üzerinden ele almaktadır: Biyokapitalizm ve body brokers. Biyokapitalizm, biyolojik yaşamın yeni neoliberal piyasa hedefleri doğrultusunda yatırım kaynağına dönüştürülmesi ile biyoteknoloji endüstrisinin gelişmesiyle ortaya çıkan yeni biyopolitik stratejilerin bütünleşmesini ifade etmektedir. Bu bağlamda biyokapitalizm, yeni neoliberalizm ile yeni biyopolitikanın eklemlenmesidir. Biyokapitalizm, biyolojik malzemeye ihtiyaç duyan endüstrilerin ve kurumların talepleri doğrultusunda bedeni bir yatırım kaynağına dönüştürerek ticarileştirir. Günümüzde organ, doku ve kadavra ticaretinin yaygınlaşması ve küresel bir karaborsaya dönüşmesi biyokapitalizmin bir sonucudur. Beden ticaretinin piyasadaki alıcılarına organ, doku ve kadavra temin eden beden simsarları, literatürdeki ismiyle body brokers ise biyokapitalizmin tüm iktisadi eğilimlerini ifade eden yeni bir meslekleşme biçimidir. Çoğunlukla yoksulların ve kimsesizlerin bedenlerini ve beden parçalarını illegal yöntemlerle alıcılara pazarlayan beden simsarlarının müşterileri çeşitlilik arz etmektedir (biyoteknoloji endüstrisi, tıp eğitimi veren özel ya da resmi kurumlar, ilaç ve kozmetik endüstrisi, donör şirketleri, savunma sanayi gibi). Organ, doku ve kadavra ticaretinden kazanç elde eden bu kişilerin sayısı her geçen gün artmaktadır.
KIBRIS MESELESİ, “DAVA”DAN “SORUN”A: BİR DIŞ POLİTİKA SORUNUNUN SÖYLEMSEL VE ANLATIBİLİMSEL ÇÖZÜMLEMESİ
Authors: ŞENCAN GÜRTUNCA Evrim
Published: August 2020

Bu çalışma, anlatıbilim yönteminden yararlanılarak, Kıbrıs meselesinin doğuşunu, davadan soruna dönüşüm sürecini ve durumun kamuoyuna yansımasını çözümlemektedir. Çalışma, Ada yönetiminin İngiltere’ye geçici devri (1878) ve Kıbrıs Barış Harekâtı (1974) arası dönemi kapsamaktadır. Bir yeniden yapılandırma olan bu çalışmanın özgün tarafı, Kıbrıs konusunun, söylemlerin analiziyle değerlendirilmesidir.

Anlatıbilim, belli bir mekân ve zamanda geçen bir olay örgüsünün, dönemin aktörlerinin söylemleri üzerinden analiz edilmesidir. Yönteme uygun olarak, dönemin Kıbrıs gazeteleri, basın bültenleri ve raporları, Girne Millî Arşivi ve Lefkoşa Millî Kütüphanesi arşivinden taranmış ve kendi dönemlerine damga vuran siyasî aktörlerinin söylemleri tespit edilmiştir. Bu verilerle, Ada’da yaşayan iki halk (Türkler ve Rumlar) arasında cereyan eden olaylar ve Türkiye, Yunanistan ve İngiltere’nin duruma müdahale süreçleri değerlendirmeye alınmıştır.

Sonuçta, ülkelerin Kıbrıs meselesini farklı değerlendirdiği; konunun, Kıbrıs Türkleri için bir mücadele olduğu, Yunanistan ve Rumlar için bir mesele olduğu, Türkiye için millî bir dava olduğu, uluslararası platformda ise sorun olarak görüldüğü tespit edilmiştir.
Strategic Assumptions for The Success of Coal Mining Reclamation to be A Tourism Site; A Case Study in Rantau Pandan Village of Bungo Regency
Authors: Daulay Asnelly Ridha
Published: August 2020

Bad practice of open coal mining in Bungo Regency leaves many abandoned ponds. One pond in Rantau Pandan Village has been neglected for 5 years. Its environmental and social impacts pushed people to sue the government to revoke the permit of XXX Company that manages the mining. The low price of coal as well as the deep and large area to be piled make more difficult to do reclamation. This study aims at exploring the prospect of doing reclamation for tourism purposes with the concept of Community Based Tourism (CBT) and analyzing some strategic assumptions for the success that of reclamation. Primary data were collected through observation, interview and focus group discussion. Data were analyzed descriptively and qualitatively using Strategic Assumption Surfacing and Testing (SAST) method. Research finding shows that the people are eager to welcome the idea of CBT however the compensation from the mining company should be paid first. Of 22 assumptions for the development of tourism village, 18 assumptions can be grouped into quadrant II or Certain Planning Region, while 4 assumptions are in quadrant IV or Problematic Planning Region. To support this plan, it’s suggested five things i.e. resolving the social conflict among parties, strengthening the local institution, giving a mandate to villagers to manage the pond as a tourism site, then followed by supervising and enhance infrastructure to ease access.
Analisis Sebaran Parameter Kualitas Air dan Indeks Pencemaran di Perairan Teluk Parepare-Sulawesi Selatan
Authors: Handiani Dian Noor , Heriati Aida
Published: August 2020

Teluk Parepare di Sulawesi Selatan merupakan kawasan dengan aktivitas pelabuhan penumpang dan kargo, serta perikanan yang produktif. Aktifitas ini berdampak terhadap ekologi di perairan tersebut. Pesisir dan laut secara ekologi memiliki fungsi penting bagi kehidupan manusia. Salah satunya fungsi siklus biogeokimia dari buangan limbah yang masuk ke perairan tersebut. Akan tetapi, kebermanfaatan ini hendaknya tidak melebihi kapasitas ekologinya dalam menerima suatu jumlah limbah. Jika berlebih, maka akan terjadi kerusakan lingkungan dan kesehatan yang sulit ditoleransi. Kondisi ini mempersulit perairan tersebut untuk mewujudkan pembangunan berkelanjutan dan berkesesuaian dengan lingkungan. Penelitian ini bertujuan menganalisis sebaran spasial parameter kualitas air laut dan indeks pencemaran di perairan Teluk Parepare, serta sebagai upaya membantu pemerintah setempat melakukan pengawasan dan pengendalian pencemaran di perairan tersebut. Penelitian ini memanfaatkan hasil pengukuran in situ enam parameter (suhu, salinitas, pH, ammonia, timbal dan tembaga) di 28 stasiun pengamatan. Parameter tersebut mencakup baku mutu peruntukkan wilayah pelabuhan dan mengingat di kawasan tersebut terdapat juga aktivitas kilang minyak. Sebaran spasial parameter kualitas perairan merupakan hasil interpolasi dengan metode Inverse Distance Weighted (IDW) dari hasil pengukuran lapangan dan dihitung indeks pencemarannya. Hasil menunjukkan sebaran suhu, salinitas, ammonia, dan pH terlarut berkesesuaian dengan baku mutu, sedangkan konsentrasi timbal dan tembaga (logam berat) berada di atas baku mutu. Indeks pencemaran (IP) menghasilkan nilai antara 1,69–38,66. Nilai IP diklasifikasikan menjadi indeks cemar ringan di 14 stasiun pengamatan dan sebaran cemar ringan dominan di Teluk Parepare bagian dalam. Indeks cemar sedang terdapat di 12 stasiun pengamatan dan sebarannya di Teluk Parepare bagian luar, sedangkan cemar berat terdapat di 2 stasiun dan sebarannya di sekitar pesisir Kota Parepare. Kondisi ini menunjukkan bahwa parameter logam berat (seperti timbal dan tembaga) telah melebihi baku mutu dan berkaitan dengan berbagai kegiatan pelabuhan, serta perkapalan di sekitar perairan Teluk Parepare.
Pemetaan Daya Dukung Lingkungan Berbasis Jasa Ekosistem Penyedia Pangan Dan Air Bersih Di Kota Pekalongan
Authors: Febriarta Erik , Oktama Roza
Published: August 2020

Identifikasi spaisal sumber daya alam merupakan salah satu pendekatan untuk mengetahui kapasitas sumber daya terhadap perubahan lahan laju pertumbuhan di suatu wilayah. Kota Pekalongan merupakan kota yang berada di pesisir utara Pulau Jawa yang mempunyai isu lingkungan berkurangnya ruang sumber daya lahan dikarenakan aktivitas pertumbuhan permukiman dan lahan terbangun. Selain itu mempunyai isu lingkungan menurunnya ketersediaan air. Tujuan dari penelitian ini adalah mengetahui daya dukung dan daya tampung lingkungan hidup di Kota pekalongan dari sektor penyedia yaitu ketahanan pangan dan air bersih. Daya dukung dan daya tampung dengan berbasis jasa ekosistem mempunyai karakteristik yang lebih mencerminkan kondisi lingkungan dengan pendekatan ekoregion, yaitu pendekatan geomorfologi lingkungan dan kondisi eksisting dari penggunaan lahan. Hasil penelitian menunjukkan kelas daya dukung hidup penyedia pangan di Kota Pekalongan secara umum rendah 47,11%, sedangkan kelas daya dukung dan daya tampung lingkungan hidup untuk air bersih secara umum adalah sedang 74,22%.
Analisis Daya Dukung Lingkungan Hidup Berbasis Jasa Ekosistem Penyediaan Air Bersih Di Pulau Karimunjawa
Authors: Santoso Dian Hudawan , Prasetya Johan Danu , Rahman Deni
Published: August 2020

Secara alamiah keberadaan Pulau Karimunjawa mampu mendukung kebutuhan hidup bagi manusia dan makhluk hidup lainnya dalam jumlah tertentu, namun seiring dengan meningkatnya pendatang sebagai wisatawan tentu sedikit banyak akan menganggu keseimbangan daya dukung dan daya tampung Pulau Karimunjawa. Ketika daya dukung dan daya tampung lingkungan hidup pada suatu daerah telah terlampui maka dampak negatif terhadap lingkungan akan muncul sehingga tidak lagi mampu mendukung dan mensuport berbagai kebutuhan untuk hidup bagi manusia yang tinggal di daerah itu. Salah satu aspek penting yang diperhitungkan dalam daya dukung dan daya tampung adalah ketersediaan air bersih. Karena itulah maka mengetahui potensi ketersediaan air bersih untuk mensuport kebutuhan masyarakat lokal maupun wisatawan di daerah penelitian sangatlah perlu. Metode yang dipakai adalah pendekatan jasa ekosistem dengan menggunakan dua proxy yaitu bentuk lahan dan tutupan lahan. Tiap-tiap proxy yang telah dideliniasi kemudian dilakukan penilaian atau pembobotan. Penilaian dan pembobotan dilakukan dengan pertimbangan penilaian para ahli atau expert judgement terhadap data ekoregion dan tutupan lahan, analisis spasial dan perhitungan indeks jasa ekosistem (IJE), serta visualisasi spasial IJE. Ground check lapangan dilakukan untuk memastikan kenampakan yang diperkirakan. Overlay dari dua proxy setelah dibobot akan menghasilkan peta jasa ekosistem penyedia air bersih. Hasil yang didapatkan adalah daerah penelitian didominasi jasa ekosistem penyedia air bersih dengan kelas tinggi seluas 1.942,94 ha atau 55,14% dan kelas sangat tinggi seluas 12,71 ha atau 0,36% untuk Desa Karimunjawa. Pada Desa Kemujan didominasi kelas sedang dengan luas 381,75 ha atau 10,84%; kelas tinggi dengan luas 869,38 ha atau 24,68%. Dengan demikkian secara umum Daya Dukung Lingkungan Hidup Pulau Karimunjawa masih mampu mendukung dan mampu menjadi penyedia air bersih yang baik begi lingkungan di sekitarnya.