bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of a compact hyperspectral imaging spectrometer with a freeform surface based on anastigmatism
Authors: Zhang Jialun , Lin Chao , Ji Zhenhua , Wu Hao , Li Chengliang , Du Bowen , Zheng Yuquan
Published: January 2020

Hyperspectral imaging spectrometers with a wide field of view (FoV) have significant application values. However, enhancing the FoV will increase the volume of the imaging spectrometer and reduce the imaging quality, so a wide-FoV spectrometer system is difficult to design. Based on the theory of off-axis astigmatism, we present a method that includes a “prism box,” “partial anastigmatism,” and a partial differential equation to solve the parameters of a freeform surface. In this method, a compact wide-FoV imaging spectrometer with a freeform surface is designed. The spectrometer is an Offner structure with two curved prisms as the dispersion elements. The primary mirror and tertiary mirror of the Offner spectrometer are an aspheric surface and a freeform surface, respectively, to correct the off-axis aberration of a wide FoV. The ratio of the slit length to the total length of the spectrometer is close to 0.4. In comparison to conventional spectrometers of the same specifications, the total length of the spectrometer is reduced by 40% and the volume by 70%. The compact imaging spectrometer has potential application in the field of space remote sensing. In addition, the design method of the spectrometer provides a reference for the design of other optical systems with freeform surfaces.
Evaluation of quadratic phase hologram calculation algorithms in the Fourier regime
Authors: Fischer David , Sinzinger Stefan
Published: January 2020

The display of phase-only holograms with a spatial light modulator (SLM) has many applications due to its potential for dynamic three-dimensional projection of arbitrary patterns. We describe an innovative modification of the quadratic phase method for hologram calculation that uses error diffusion for initialization of an iterative phase retrieval algorithm. We compare the performance of our algorithm to other variations of hologram calculation approaches that use the quadratic phase method in the Fourier regime. Parameter variation is conducted for finding the differences and limits of the methods. Experiments with an SLM show the validity of the simulations.
Compact cross-slot waveguide polarization beam splitter using a sandwich-type coupler
Authors: Wu Shengbao , Zhao Zhicheng , Feng Ting , Steve Yao X.
Published: January 2020

A compact silicon-based cross-slot waveguide (CSW) polarization beam splitter (PBS) utilizing a sandwich-type coupler is proposed. The coupler consists of two identical CSWs separated by a horizontal slot waveguide (HSW), and S-bend sections at each end of the coupling section are introduced to decouple and separate the light. Owing to the strong birefringence of the HSW, the coupling length ratio between two different polarized modes (TE and TM) is adjustable in a suitable range by simply changing the gap width between the CSW and the HSW. The coupling length of the TM mode can be easily made half of that of the TE mode with a proper gap width, which is a favorable condition to realize a short PBS. Then, by making the length of the coupling section equal to the coupling length of the TE mode, the TE and TM modes are split. The PBS has the advantages of a small footprint and a high polarization extinction ratio (PER) and may be useful in the polarization management of a CSW-based on-chip optical system. Numerical results indicate that a PBS of

∼

12

µ

m

with an insertion loss (IL) of 0.17 (0.53) dB, PER of 24.12 (21.14) dB for the TM (TE) mode is achieved at the wavelength of 1.55 µm, with a bandwidth covering the full C band for keeping

P
E
R

>

15

d
B

and

I
L

<

1

d
B

.
Optoelectronic properties and anisotropic stress of Mo:ZnO thin films deposited on flexible substrates by radio frequency magnetron sputtering
Authors: Chen Hsi-Chao , Peng Guan-Ting , Liu Tan-Fu
Published: January 2020

This research investigated the optoelectronic properties and anisotropic stress of Mo-doped ZnO (MZO) films, which were deposited on polyethylene terephthalate and polycarbonate flexible substrates with radio frequency magnetron sputtering. The optical properties, x-ray diffraction (XRD) spectra, Hall effect measurements, and self-made phase-shift shadow moiré interferometer readings were utilized to evaluate the performances of the MZO films. Based on the results, the transmittance and (002) peak size of the XRD spectra decreased when the substrate temperature increased. However, this took place especially when the oxygen flow was on the increase. Also, carrier mobility, carrier concentration, and anisotropic stresses increased at higher substrate temperatures, but this was not the case when the oxygen flow increased. The energy gap (

E
g

) of the MZO films showed a blueshift with an increase in the substrate temperatures, but this rather changed to a redshift when the oxygen flow was observed to be on the rise.
Wideband multiwavelength Brillouin fiber laser based on dual-mode AlGaInAs/InP microcavity lasers
Authors: Wu Ji-Liang , Huang Ya-Li , Yang Yue-De , Xiao Jin-Long , Qin Guan-Shi , Huang Yong-Zhen
Published: January 2020

A multiwavelength Brillouin fiber laser (BFL) is demonstrated using a 1.55-µm AlGaInAs/InP microcavity laser as a seed source. The combination of a nonlinear fiber cavity and a feedback loop leads to multiwavelength generation with a channel spacing of double-Brillouin-frequency assisted by cavity-enhanced four-wave mixing. The amplified output of a dual-mode lasing square microcavity laser with a wavelength interval of 1.5 nm is applied as the pump source for the broadband multiwavelength generation. A wideband multiwavelength BFL covering from 1490 nm to 1590 nm is successfully generated at an optimized pump power of 25 dBm and a feedback power of

−

17.2

d
B
m

. The power stability of 0.82 dB over a 60 min duration of the multiwavelength BFL can satisfy the demands for the optical fiber sensing and microwave photonic systems.
Analysis of a highly sensitive flat fiber plasmonic refractive index sensor
Authors: De Moutusi , Singh Vinod Kumar
Published: January 2020

In this paper, we propose an efficient double-layered flat fiber (DLFF) plasmonic refractive index sensor having high resolution and linearity. Thin gold film is used as surface plasmon resonance (SPR) active material protected by a titanium dioxide layer, both deposited on the upper flat surface of DLFF. The sensor consists of an analyte channel in the central core hole as well as on the top of the fiber. Structural parameters of DLFF and thickness of gold and titanium dioxide layer are analyzed based on the finite element method. The optimized structure is studied based on wavelength and amplitude interrogation techniques in the near-infrared region. Numerical results show average wavelength sensitivity of 12172 nm/RIU with a resolution of

8.21

×

10

−
6

R
I
U

(refractive index unit) in the highly refractive index (RI) range from 1.445 to 1.490. Further, amplitude sensitivity of this probe is found to be

2910

R
I
U

−
1

with a resolution of

3.44

×

10

−
6

R
I
U

, which is the highest among all reported PCF SPR sensors, as per the authors’ best knowledge. Compared with traditional photonic crystal fiber, the designed DLFF makes the sensor configuration simple to fabricate as well as a potential candidate for developing biochemical sensors and portable devices.
Dynamic phase measuring profilometry for rigid objects based on simulated annealing
Authors: Dai Mingyou , Peng Kuang , Luo Man , Zhao Jiang , Wang Wenfeng , Cao Yiping
Published: January 2020

This paper presents a dynamic phase measurement profilometry (PMP) method based on the simulated annealing algorithm. In dynamic PMP for rigid objects, pixel matching is an effective method to make one-to-one pixel correspondence in each captured pattern. However, pixel matching by the global traversing algorithm takes up most of the time in the whole reconstruction process. For the purpose of optimizing pixel matching and enhancing performance in dynamic PMP, the simulated annealing algorithm is introduced. By generating a random path based on the simulated annealing algorithm, it is sufficient to locate the approximate area of the measured object. Then the accurate position can be calculated by combining it with a partial traversing algorithm. The proposed method can reduce pixel matching time by 63% and increase reconstruction efficiency by 58%. Simulations and experiments prove feasibility and precision.
Photonic molecule quantum optics
Authors: Liao Kun , Hu Xiaoyong , Gan Tianyi , Liu Qihang , Wu Zhenlin , Fan Chongxiao , Feng Xilin , Lu Cuicui , Liu Yong-chun , Gong Qihuang
Published: January 2020

Photonic molecules (PMs) are artificial nanoscale photonic structures that play important roles in the fundamental optics field. PM quantum optics has recently become a promising research field, because it provides novel quantum optical phenomena including Rabi oscillation, the Stark effect, the Purcell effect, the photon blockade effect, bound states in the continuum, electromagnetically induced transparency, and Autler–Townes splitting. With the constant improvements in theoretical PM quantum optics research, many newly integrated photonic devices have been proposed and experimentally demonstrated, showing major potential for fabrication of next-generation, high-performance integrated photonic chips. This review provides a universal overview of the rapidly developing PM quantum optics field, including fundamental mechanisms, realization frameworks, novel quantum optical phenomena, and applications in newly developed photonic devices while also giving a general summary of the remaining challenges and proposing possible development directions for PM quantum optics.
PhUn-Net: ready-to-use neural network for unwrapping quantitative phase images of biological cells
Authors: Dardikman-Yoffe Gili , Roitshtain Darina , Mirsky Simcha K. , Turko Nir A. , Habaza Mor , Shaked Natan T.
Published: January 2020

We present a deep-learning approach for solving the problem of 2π phase
ambiguities in two-dimensional quantitative phase maps of biological
cells, using a multi-layer encoder-decoder residual convolutional
neural network. We test the trained network, PhUn-Net, on various
types of biological cells, captured with various interferometric
setups, as well as on simulated phantoms. These tests demonstrate the
robustness and generality of the network, even for cells of different
morphologies or different illumination conditions than PhUn-Net has
been trained on. In this paper, for the first time, we make the
trained network publicly available in a global format, such that it
can be easily deployed on every platform, to yield fast and robust
phase unwrapping, not requiring prior knowledge or complex
implementation. By this, we expect our phase unwrapping approach to be
widely used, substituting conventional and more time-consuming phase
unwrapping algorithms.
Mechanical driving mediated slow light in a quadratically coupled optomechanical system
Authors: Zhang Yongchao , Yan Kexun , Zhai Zhangyin , Bian Xintian , Zuo Fen , Yu Hualing , Jiang Cheng
Published: January 2020

We theoretically study the controllable optical response in an optomechanical system with membrane-in-the-middle geometry, where the cavity mode is coupled to the square of the position of the membrane. When the optical cavity is driven by a strong control field and the movable membrane is excited by a weak coherent mechanical driving field, the optical response of the system can be detected by applying a weak probe field to the optical cavity. Due to the additional mechanical driving field, more complex interference exists in this optomechanical system. Under the two-phonon resonance condition, the probe transmission can be larger than unity or suppressed to be zero because of the interference effect, which is dependent on the phase difference of the applied fields. We show that the transmission coefficient and group delay of the probe field can be controlled flexibly by the power of the control field, the amplitude and phase of the mechanical driving field, and the environment temperature. Our results provide a flexible route to control light propagation based on the quadratically coupled optomechanical system.
Asymmetric direct detection of orthogonal offset carriers assisted polarization multiplexed single-sideband signals
Authors: Li Xueyang , O’Sullivan Maurice , Xing Zhenping , Alam Md Samiul , Hoang Thang , Xiang Meng , Zhu Mingyue , Zhang Jinsong , Elfiky Eslam , Plant David V.
Published: January 2020

We propose and demonstrate the asymmetric direct detection (ADD) of polarization division multiplexed single-sideband (PDM-SSB) signals with orthogonal offset carriers. ADD exploits the photocurrent difference to eliminate the Y-Pol interference in the X-Pol, and the X-Pol signal intensity to eliminate the X-Pol interference in the Y-Pol without resorting to iterative algorithms. This enables not only low-complexity signal linearization but also a simplified receiver front-end composed of a single optical filter, two single-ended photodiodes and two analog-to-digital converters (ADC). In the experiment, we first perform a parametric study of the proposed scheme at 40 Gbaud in the back-to-back configuration (B2B) to evaluate the performance impact of different system parameters including the carrier to signal power ratio (CSPR), the matched filter roll-off, and the filter guard band. Next, we demonstrate the transmission of 416 Gbit/s PDM 16-QAM signal over 80 km single-mode fiber (SMF) below the soft-decision forward error correction (SD-FEC) threshold of 2×10−2. We also numerically study the effectiveness of a 2×2 multiple-input-multiple-output MIMO equalizer in alleviating the inter-polarization linear crosstalk resulting from the non-orthogonal PDM-SSB signals due to polarization-dependent loss (PDL), which is not negligible for potential on-chip implementation of ADD.
Patch scanning displays: spatiotemporal enhancement for displays
Authors: Akşit Kaan
Published: January 2020

Emerging fields of mixed reality and electronic sports necessitate greater spatial and temporal resolutions in displays. We introduce a novel scanning display method that enhances spatiotemporal qualities of displays. Specifically, we demonstrate that scanning multiple image patches that are representing basis functions of each block in a target image can help to synthesize spatiotemporally enhanced visuals. To discover the right image patches, we introduce an optimization framework tailored to our hardware. In our method, spatiotemporally enhanced visuals are synthesized using an optical scanner scanning image patches from an image generator illuminated by a locally addressable backlight. As a validation of our method, we demonstrate a prototype using commodity equipment. Our method improves pixel fill factor to hundred percent and enhances spatial resolution of a display up to four times. An inherent constrain regarding to spatiotemporal qualities of displays could be solved using our method.
100-kHz Interferometric Rayleigh Scattering for multi-parameter flow measurements
Authors: Cutler Andrew D. , Rein Keith , Roy Sukesh , Danehy Paul M. , Jiang Naibo
Published: January 2020

Simultaneous multi-point multi-parameter flow measurement using Interferometric Rayleigh scattering (IRS) at 100-kHz repetition rate is demonstrated. Using a burst-mode laser and an un-intensified high-speed camera, interferograms are obtained that contain spatial, temporal and scattered light frequency information. The method of analysis of these interferograms to obtain simultaneous multi-point flow velocity and temperature measurements is described. These methods are demonstrated in a 100-kHz-rate study of a choked, under-expanded jet flow discharged by a convergent nozzle. Measurement results and uncertainties are discussed. The 100-kHz IRS technique with un-intensified imaging is applicable in large-scale wind tunnels for the study of unsteady and turbulent flows.
Interaction and hybridization of orthogonal Fabry-Pérot like surface plasmon modes in metal-dielectric grating structures
Authors: Dong Yongliang , Bandaru Prabhakar R.
Published: January 2020

The interaction of specific surface plasmon modes in metal-dielectric-metal arrangements is investigated, motivated by their relevance to device-based configurations. The absorption spectra of the relevant nanostructures considering geometrical variation, such as the width and height of the metal or dielectric, are probed considering such interactions. Frequency domain simulations are used to study related multiple surface plasmon polariton resonance modes. It is indicated that the resonant energy level interaction due to the coupling between modes in a horizontal dielectric layer and those in a vertical groove can be engineered and understood in terms of energy level hybridization.
20-mJ, sub-ps pulses at up to 70 W average power from a cryogenic Yb:YLF regenerative amplifier
Authors: Demirbas Umit , Cankaya Huseyin , Hua Yi , Thesinga Jelto , Pergament Mikhail , Kärtner Franz X.
Published: January 2020

We report, what is to our knowledge, the highest average power obtained directly from a Yb:YLF regenerative amplifier to date. A fiber front-end provided seed pulses with an energy of 10 nJ and stretched pulsewidth of around 1 ns. The bow-tie type Yb:YLF ring amplifier was pulse pumped by a kW power 960 nm fiber coupled diode-module. By employing a pump spot diameter of 2.1 mm, we could generate 20-mJ pulses at repetition rates between 1 Hz and 3.5 kHz, 10 mJ pulses at 5 kHz, 6.5 mJ pulses at 7.5 kHz and 5 mJ pulses at 10 kHz. The highest average power (70 W) was obtained at 3.5 kHz operation, at an absorbed pump power level of 460 W, corresponding to a conversion efficiency of 15.2%. Despite operating in the unsaturated regime, usage of a very stable seed source limited the power fluctuations below 2% rms in a 5 minute time interval. The output pulses were centered around 1018.6 nm with a FWHM bandwidth of 2.1 nm, and could be compressed to below 1-ps pulse duration. The output beam maintained a TEM00 beam profile at all power levels, and possesses a beam quality factor better than 1.05 in both axis. The relatively narrow bandwidth of the current seed source and the moderate gain available from the single Yb:YLF crystal was the main limiting factor in this initial study.
Two-photon microscope using a fiber-based approach for supercontinuum generation and light delivery to a small-footprint optical head
Authors: Zhao Youbo , Maguluri Gopi , Daniel Ferguson R. , Tu Haohua , Paul Kush , Boppart Stephen A. , Llano Daniel A. , Iftimia Nicusor
Published: January 2020

In this Letter, we report a low-cost, portable, two-photon excitation fluorescence microscopy imager that uses a fiber-based approach for both femtosecond supercontinuum (SC) generation and light delivery to the optical head. The SC generation is based on a tapered polarization-maintaining photonic crystal fiber that uses pre-chirped femtosecond narrowband pulses to generate a coherent SC spectrum with a bandwidth of approximately 300 nm. Using this approach, high-power, near-transform-limited, wavelength-selectable SC pulses are generated and directly delivered to the imaging optical head. Preliminary testing of this imager on brain slices is presented, demonstrating a high signal-to-noise ratio and sub-cellular imaging capabilities to a depth of approximately 200 µm. These results demonstrate the suitability of the technology for ex vivo and potentially in vivo cellular-level biomedical imaging applications.
Asymmetric chiroptical effect from chiral medium filled golden slit grating on substrate
Authors: Ming Yong , Chen Feiliang , Wu Xuannan , Pang Lin , Gao Fuhua , Hou Yidong
Published: January 2020

In this Letter, we report a giant and robust asymmetric chiroptical
effect (ACOE) in the chiral medium filled golden slit grating on glass
substrate (CMGSG-GS). This ACOE comes from the influence of interface
asymmetry on the electromagnetic cross-coupling in the CMGSG-GS, and
it is inherently different than that reported in the Faraday medium
and the planar anisotropic chiral metamaterials. Both the polarization
eigenstate and the transmission matrix are highly dependent on the
metal structure used in the CMGSG-GS. The polarization eigenstates of
the CMGSG-GS are two co-rotating elliptical states with ellipticity of
nearly 0, and they remain mostly unchanged for opposite directions.
The transmission matrices of opposite directions are normal matrices,
which do not show any symmetric law although the geometry of the
CMGSG-GS owns a high rotational symmetry. The reported ACOE gives a
measurable physical parameter to reveal the events happening at
interface.
Fabrication and 1046 nm laser behaviors of Yb-doped phosphosilicate binary fiber with a pedestal structure
Authors: Liu Rui , Yan Dapeng , Fan Zhenjie , Li Libo , Wang Jianming , Shi Jianhong , Zhu Qixin
Published: January 2020

We report a Yb-doped 25/400 phosphosilicate binary fiber with a pedestal structure by conventional modified chemical vapor deposition (MCVD) technology and solution doping process. Through Ge-doped raised fiber cladding, the fiber provides a low 0.054 core NA. The core dopant concentration of Yb2O3 and P2O5 is estimated to be 0.48 mol% and 7.4 mol%, respectively. It is found that the Yb-doped phosphosilicate binary fiber shows very low photodarkening loss of 3.7 dB/m at 633 nm, and emission spectrum also shows obvious blue shift. Tested in an all-fiber master oscillator power amplifier (MOPA) system, more than 3.2 kW laser at 1046 nm is achieved with a suitable 976 nm pump power injected, the slope efficiency is about 85.8%, and the beam factor of M2 is 1.79.
Korelasi Kadar Feritin dengan Profil Lipid pada Penyandang Talasemia Beta Mayor Anak
Authors: Rahmani Mutiara , Reniarti Lelani , Rusmil Kusnandi
Published: January 2020

Latar belakang. Talasemia beta mayor merupakan penyakit genetik dengan gangguan sintesis rantai globin yang menimbulkan eritopoiesis tidak efektif sehingga membutuhkan transfusi darah rutin. Terapi tersebut menyebabkan kelebihan besi di berbagai organ termasuk di hati dan pankreas yang memengaruhi enzim hepatik lipase yang mengatur regulasi metabolisme lipid. Tujuan. Mengetahui korelasi kadar feritin dengan profil lipid pada penyandang talasemia beta mayor anak. Metode. Penelitian observasional analitik dengan rancang potong lintang, dilaksanakan November - Desember 2018. Subjek adalah penyandang talasemia beta mayor di Rumah Sakit Hasan Sadikin, secara consecutive sampling. Dilakukan pemeriksaan serum feritin, trigliserida, kolesterol total, low density lipoprotein (LDL), dan high density lipoprotein (HDL). Uji statistik menggunakan uji korelasi rank Spearman dengan kemaknaan nilai p<0,05.Hasil. Terdapat sampel sebanyak 40 penderita talasemia beta mayor, 20 perempuan dan 20 laki-laki. Rerata serum feritin 4328,2 mcg/L, kolesterol total 93,78 mg/dl, HDL 20,65 mg/dl, LDL 52,95 mg/dl, dan trigliserida 154,95mg/dl. Tidak didapatkan korelasi antara feritin dengan kolesterol total dan LDL (p>0,05). Terdapat korelasi antara kadar feritin terhadap kadar serum kolesterol HDL dan trigliserida (r= -0,349, p=0,029 dan r= 0,460, p=0,003). Kesimpulan. Terdapat korelasi negatif antara kadar feritin terhadap kolesterol HDL dan korelasi positif terhadap trigliserida. Semakin tinggi feritin, semakin rendah HDL, semakin tinggi trigliserida.
Educação ambiental e interdisciplinaridade: a importância da água na vida dos ribeirinhos da Ilha das Onças (Furo Conceição), Barcarena, Pará, Brasil
Authors: Rodrigues Fabrício César da Costa , Palheta Rogério Tadeu Mendes
Published: January 2020

Este artigo enfoca a Educação Ambiental Interdisciplinar como um dos instrumentos indispensáveis para compreensão das relações entre as comunidades ribeirinhas paraenses e a natureza, no seu exercício da cidadania, tendo como objetivo discutir como os ribeirinhos da Comunidade do Furo Conceição, localizada na Ilha das Onças, Barcarena, Pará representam as suas relações sociais com os recursos hídricos e seus impactos, considerando a escola local como propulsora de iniciativa de práticas pedagógicas curriculares sustentáveis. Assim, desenvolveu-se um projeto de sensibilização da comunidade para uma postura de responsabilidade socioambiental, incluindo alunos do 1º ao 4º ano do Ensino Fundamental de classe multisseriada. Nesse contexto, buscou-se como base metodológica o estudo de caso, compreendendo a realidade em profundidade (social, econômico e ambiental) da comunidade do Furo Conceição.
La playa en donde aprendí a bucear: Despojo marino y pérdida de conocimiento holístico en la escala local.
Authors: Narchi Nemer Eduardo
Published: January 2020

Neste artigo, tracei os passos com os quais os projetos turísticos podem ser transformados em apropriação oceânica (ocean grabbing). No foco da análise é a desapropriação do acesso à praia e a repercussão dessa desapropriação na erosão do conhecimento ecológico local. Apresento um caso de estudo peculiar: Playitas, uma pequena praia localizada no município de Ensenada, Baja California, que por mais de 60 anos serviu como lugar de recreação para os moradores desta cidade. Eu coloco ênfase particular no apego que os alunos da Escola de Ciências Marinhas tiveram desenvolvido para o site. Concluo que o fechamento do acesso à Playitas marca uma sensível, mas imensurável, perda material e cognitiva de grupos não representados entre os sujeitos de estudo nas ciências sociais.
A subjetividade contemporânea: uma nova fronteira para a educação ambiental
Authors: Farias Ana Lizete , Knechtel Maria Do Rosário
Published: January 2020

Este trabalho propõe uma discussão sobre as questões de violência e sofrimento , assim como as suas consequências nas comunidades tradicionais, especialmente aquelas localizadas em ambientes das regiões costeiras. Dadas as condições de intenso sofrimento psíquico geradas por situações de injustiça ambiental, julgamos importante que a Educação Ambiental também partilhe da responsabilidade na reorganização do campo simbólico destes sujeitos. Por isto, propomos que estes elementos também sejam observados na construção de uma Educação Ambiental, enquanto instrumento de intervenção coletiva em esferas públicas.

Palavras chave: Sofrimento, Violência, Psicanálise, Educação Ambiental, Oceanografia Socioambiental.
Conhecimentos, experiências e práticas vitais tradicionais indígenas como fundamento para a construção de uma cultura de sustentabilidade
Authors: Capitango José , Callejas Germán Vargas
Published: January 2020

RESUMO

O presente estudo objetiva valorizar aqueles aspetos das culturas tradicionais (conhecimentos, estilos de vida...) que podem servir de fundamento para a construção e cultivo de uma cultura de sustentabilidade a nível global. A informação que sustenta este estudo provém do projeto "Processos e práticas educativas para a transição a uma cultura da sustentabilidade e a cooperação em Galícia e República Dominicana - Investigação-Ação", como também da tese em processo de elaboração sobre "Educação e Desenvolvimento nas Comunidades Ovimbundu de Angola: Estudo etnográfico da Comunidade de Ombala Ekovongo-Bié/Angola" (investigação etnografica). Trata-se de uma tentativa de aproximar as duas realidades histórico-culturais (africana, latino-americana), naquilo que as suas populações indígenas têm de comum em termos de conhecimentos e experiências para subsidiar a construção da cultura de sustentabilidade.

Palavras-chave: conhecimentos; experiências vitais tradicionais indígenas; cultura de sustentabilidade

ABSTRACT

The objective of this study is to value those aspects of traditional cultures (knowledge, lifestyles ...) that can serve as the foundament for the construction and cultivation of a culture of sustainability at a global level. The information that supports this study comes from the project "Educational processes and practices for the transition to a culture of sustainability and cooperation in Galicia and the Dominican Republic - Research-Action", as well as the thesis in the process of elaboration on "Education and Development in Ovimbundu Communities of Angola: Ethnographic study of the Ombala Ekovongo-Bié / Angola "community (Ethnographic Research). It is an attempt to bring together two historical-cultural realities (African and Latin American), in what their indigenous populations have in common in terms of experience and knowledge, to subsidize the construction of culture of sustainability.

Keywords: knowledge; traditional indigenous life experiences; culture of sustenability
Computer forensics and electronic evidence in criminal legal proceedings: Lithuania’s experience
Authors: Kančauskienė Jolita
Published: January 2020

Jolita Kančauskienė, a Prosecutor of the Criminal Prosecution Department, Prosecutor General’s Office in the Republic of Lithuania, examines the role and development of electronic evidence in criminal legal proceedings in Lithuania. Since the ultimate objective is to use evidence to prove or disprove disputed facts, electronic evidence must be obtained in compliance with existing legislation and best practice to ensure admissibility at trial.

Index words: Evidence law, criminal procedure, Electronic evidence law and legislation, Lithuania
Case translation: Bulgaria
Authors: Case translation Bulgaria:
Published: January 2020

Decision No 50, Haskovo District Court, Civil Division, II appellate civil panel, 20 January 2018

Bulgaria; Civil Procedure Code; formation of contract; electronic evidence; exchanges via social networking website; proof
Case translation: China
Authors: Case translation China:
Published: January 2020

Hangzhou Huatai Yimei Culture Media Co., Ltd. v. Shenzhen Daotong Technology Development Co., Ltd. (2018) Zhe 0192 Civil Case, First Court No. 81, Hangzhou Internet Court of the People’s Republic of China, 27 June 2018

China; intellectual property infringement; authenticity of electronic evidence; screenshot of webpage; SHA256 hash value; blockchain related evidence; Bitcoin block chain; integrity of evidence; law of electronic signatures
General Editors and Editorial Board
Authors: Credits Volume
Published: January 2020

General Editors and Editorial Board
DEBRIS-FRETTING TEST OF COATED AND UNCOATED ZR-1%NB CLADDING
Authors: Kopeć Marcin , Malá Martina , Cvrček Ladislav , Krejčí Jakub
Published: January 2020

Debris fretting is one of the most significant fuel rod failure causes. An approach to mitigate this is to apply special coatings on the surface of the cladding that are supposed to increase the wear resistance. This paper summarizes the experiments performed in Research Centre Rež on fuel cladding tube specimens. The tube segments made of uncoated and coated Zr-1%Nb alloy were exposed to fretting tests simulating the wire-debris vibrations impact on cladding during the reactor operation. The goal of these tests is to obtain results about the differences in wear resistance of uncoated and coated specimens. This paper shows the testing procedure in the air at room temperature and obtained impact markings on the specimens’ surfaces.
RESIDUAL HEAT ESTIMATION OF NUCLEAR FUEL IN ENERGY WELL REACTOR
Authors: Šošková Jana , Dambrosio Antonio , Mazzini Guido , Ruščák Marek
Published: January 2020

Energy Well (EW) is a concept of a small modular reactor, designed as a source of energy for places with low infrastructure. Its design combines TRISO fuel particles, graphite moderator and molten salt coolant. One of key features is that the active core is small and therefore easy to transport. Residual heat estimation of EW fuel assembly is conducted using two different computation codes, SCALE and SERPENT. The obtained residual heat power is then used as an input in TRACE model of the EW to obtain the development of residual temperature in the coolant in the core inlet and outlet and also maximum temperature on the outer side of a fuel slab. The resulting temperatures are below the operational temperature.
Penataan Kawasan Sungai Winongo Berbasis Partisipasi Masyarakat di Pakuncen Yogyakarta
Authors: Firianti Wahidatul Rizqi
Published: January 2020

All major cities have slums located on the river. During this time the arrangement of slums was directly carried out by the government. But the results were often rejected because it isn't under the conditions of the community. This condition was pushed new concepts of the planning residential on the river are based on participation. The fact also made me discuss the process and implication of the arrangement residential Winongo River in Pakuncen Yogyakarta based on participation. This research is using a phenomenology approach. The data collected through the interview and observation process. The process of the arrangement River area is six steps, namely assessment, planning, lobbying, implication, monitoring, and evaluation. This study was founded that the arrangement River based on participation is implicated positively. The implication is seeking the change on environmental, attitude, and awareness of societies to kept habitation more than beautiful. In the other aspect, this activity was a growth cooperation spirit and the people of increase economic. However, the arrangement of the Winongo river area was still found by some adolescent making the location of the riverbank an unproductive gathering place. This event is considered able to disturb society because it is not following social norms. This condition needs counseling for the adolescent who are in puberty.Hampir semua kota besar mempunyai permukiman kumuh yang berada di kawasan bantaran sungai. Selama ini penataan kawasan kumuh langsung dilakukan oleh pemerintah tapi hasilnya tidak sesuai dengan kebutuhan masyarakat. Kondisi semacam ini mendorong konsep baru dalam penataan kawasan sungai dengan berbasis partisipasi masyarakat. Fakta ini mendorong peneliti untuk mendiskusikan proses dan implikasi penataan kawasan Sungai Winongo di Pakuncen Yogyakarta berbasis partisipasi masyarakat. Penelitian ini menggunakan pendekatan fenomenologi. Data dikumpulkan melalui proses wawancara dan observasi. Proses penataan kawasan ini melalui enam tahap, yakni assassment (identifikasi masalah), perencanaan, lobbying, pelaksanaan, monitoring, dan evaluasi. Studi ini menemukan bahwa progam penataan kawasan sungai berbasis partisipasi mayarakat berimplikasi positif. Implikasi penataan tersebut terlihat dalam perubahan kondisi fisik (lingkungan), perubahan perilaku masyarakat, dan kesadaran masyarakat untuk menjaga permukiman yang lebih asri. Pada aspek lain, kegiatan tersebut dapat menumbuhkan semangat gotong royong dan peningkatan ekonomi masyarakat. Namun demikian, penataan kawasan sungai Winongo masih ditemukan sebagian remaja menjadikan lokasi bantaran sebagai ajang berkumpul yang tidak produktif. Ajang ini dianggap dapat meresahkan masyarakat karena tidak sesuai dengan normal sosial. Kondisi ini perlu ada pendampingan khusus kepada remaja yang berada pada masa pubertas.
Analisis Numerik Perkerasan Sistem Pelat Terpaku Tiang Tunggal menggunakan Tiang Pipa Baja pada Tanah Lunak
Authors: Puri Anas
Published: January 2020

All of the full-scale tests and numerical analysis of Nailed-slab System from previous researchers used massive reinforced concrete piles. This research will study the possibility of steel pipe pile as a replacement of massive reinforced concrete piles if there are available enough steel pipe piles. This research is aimed to study the behavior of single steel pipe pile Nailed-slab System on soft clay and the influence of pile length due to slab deflection and soil stresses. It was used the data from Puri (2015a) for a single massive reinforced concrete pile Nailed-slab. This massive reinforced concrete pile was replaced by a single steel pipe pile with similar and varied diameter which analyzed by the 2D finite element method. Results show that the steel pipe pile can be used as a “nail” at the Nailed-slab pavement system but by a larger dimension compared to the massive reinforced concrete pile. The maximum effective shear stress in soil did not reach undrained shear strength under a standard wheel load 40 kN. Generally, the soil was not failure.
Penerapan Manajemen Resiko pada Pembangunan Proyek Perpanjangan Dermaga log (Studi Kasus: Pelabuhan DalamTanjung Emas Semarang)
Authors: Ismiyati Ismiyati , Sanggawuri Ranggi , Handajani Mudjiastuti
Published: January 2020

Delay in the implementation of the project often occurs due to various risk factors that have not been identified during project implementation, so that the impact on project delays and unexpected costs increases. However, each construction project has different risks, becaused the environmental conditions of the project, so that it requires handling different methods of project implementation. This study aims to: 1) analyze the risks that could potentially occur during the construction of the log dock extension; 2) Appropriate Handling Methods for the Implementation of the Log Dock Extension Work. The research method is done by identifying the risks that occur in the field and with the interview method about the possibility of possible risks that occur. The results of the study indicate five high-risk categories according to the perception of service providers that most influence on project delays. These risks include unpredictable external phenomena, such as tidal elevations that exceed plan, resulting in changes in design and method of implementation. The conclusions of this study include that the application of risk management to the implementation of the log dock extension project at the port of Tanjung Emas Semarang needs to be applied to minimize delays and reduce unexpected costs.
Environmental Performance of Food and Beverage Firms in Merger and Acquisition Deals
Authors: Eng Li Li , Fikru Mahelet G.
Published: January 2020

We build upon existing theories of merger and acquisition (M&A) to examine the differences in environmental performance between targets and acquirers in the Food and Beverage processing (F&B) industry. In a cream-skimming strategy, acquiring a firm with better environmental performance may add to the acquirer’s existing green efforts and improve their environmental capabilities. In a turnaround strategy, an acquirer may buy businesses from a dirtier firm and later bring them up to the buyer’s environmental standard. Among a set of 13 M&A deals in the F&B industry, we identify deals where targets have poorer or better environmental performance (toxic chemical management) than their acquirers. Our finding suggests that, among the given set of firms, there is some evidence of improvements in the toxic chemical management rate of targets and acquirers.
A Study on the Library’s Cultural Value Based on the Perceptions of Users and Librarians in Korea
Authors: Noh Younghee
Published: January 2020

This study was conducted to assess the cultural value of the library by performing a perception survey for public library librarians and users. We have undertaken the processes of deriving a preliminary evaluation index based on domestic and foreign research results, determining the final evaluation index, and assessing the library’s cultural value within the scope of librarians and users, among others. As a result of conducting this research, we have divided the evaluation areas around cultural values into four areas of development: local culture, succession and promotion of cultural heritage, contribution to local residents’ cultural enjoyment, and formation of community culture in general. As a result of analyzing by evaluation area, the area of the formation of community culture turned out to have the highest average of 3.92, followed by an average of 3.84 for the area of contribution to the local residents’ cultural enjoyment, 3.82 for the area of development of local culture, and 3.53 for the area of the formation of community culture. Furthermore, respondents demonstrated the highest level of agreement to the evaluation item, stating that libraries contribute to resolving the cultural gap, within the area of formation of community culture.
Rough quotient in topological rough sets
Authors: Alharbi Nof , Altassan Alaa , Aydi Hassen , Özel Cenap
Published: January 2020

In this paper, we introduce a rough quotient. Also, we present conditions ensuring that G/H are partitions of G. The rough projection map is also presented. We discuss first, second and third rough isomorphism theorems and other related results. At the end, an orbit and a stabilizer in topological rough groups are considered.
Musings on ethnomusicology, interdisciplinarity, intradisciplinarity, and decoloniality
Authors: Ceribašić Naila
Published: January 2020

Thinking from the perspective of Croatian ethnomusicology as one of ethnomusicologies "at home", the author muses on the position of ethnomusicology on a global scale, and in particular how it relates to mainstream English-language ethnomusicology and other fringe ethnomusicologies, the interdisciplinary links with sister disciplines (primarily ethnology and cultural anthropology), and endeavours to decolonize ethnomusicology. By taking into account the issue of reciprocity (or the lack thereof) between various disciplines and the linguocentric predicament of (ethno)musicological studies, she argues that more intellectual effort than is being currently exerted should be invested into engaged comparison of one's own fieldwork, analytical processes and research outcomes with cross-cultural ethnomusicological literature and literature in other disciplines of music studies. Related to this is her suggestion to take the issue of decoloniality seriously. Therefore, instead of mere celebration of different ethnomusicologies, she proposes a combination of "bi-ethnomusicologicality" and "going pidgin" ethnomusicology as means for making ethnomusicology a more relevant discipline on a global scale.
Brižno poduzetništvo u ženskim poslovnim praksama
Authors: Obad Orlanda , Škokić Tea
Published: January 2020

U radu se propituju rodno uvjetovane prepreke za uspješno poslovanje poduzetnica, posebice u segmentu ravnoteže privatnog i poslovnog života (work-life balance), rodno uvjetovane podjele kućanskih poslova unutar šireg problema socijalne reprodukcije u patrijarhalnim društvima te u segmentu stila vođenja poslovanja. Primijenjena je kvalitativna metodologija karakteristična za etnografska istraživanja – pomoću metode polustrukturiranog intervjua provedeni su razgovori s 24 poduzetnice, dok teorijski okvir pripada feminističkoj kritici roda i diskurzivnoj analizi. Istraživanje je provedeno u Bosni i Hercegovini, Hrvatskoj, na Kosovu i u Srbiji. Ključni nalazi pokazuju da specifične politike i mjere za bolje uključivanje žena u svijet poduzetništva nisu dovoljne ako isključuju širu kritiku patrijarhata, a time i prevladavajućeg koncepta poduzetništva, kroz rodno osviještene međusektorske politike. Novost koju ovo istraživanje donosi odnosi se na neformalne prakse koje žene prakticiraju u svojim formalnim i neformalnim poslovima, a koje imaju potencijala postati jednakovrijedni model poduzetničkog ponašanja.
Prekarnost
Authors: Hromadžić Hajrudin , Zgaljardić Antonija
Published: January 2020

Rad propituje primjenjivost koncepta i pojma prekarnost kao označitelja koji se odnosi na posljedice restrukturiranja rada i radnih uvjeta pod diktatom neoliberalnog režima. U uvjetima intenzivirane globalne kompetitivnosti čitavo radno aktivno stanovništvo biva podvrgnuto pritiscima prilagodbe tržištu. Kratkoročni i nestabilni radni ugovori postali su tipična pojavnost postindustrijskog društva, a poimanje vremena kao resursa poprimilo je drukčiju dimenziju. Hegemonija satnog vremena slomila se zbog zahtjeva za stalnom otvorenošću globalnom tržištu te imperativa permanentnog stanja pripravnosti, uključenosti i prilagodljivosti. Preplitanja kulturno-povijesnih mikroperspektiva i socio-ekonomskih makroperspektiva ukazuju na različite tendencije menadžmenta u kvantifikaciji radnog vremena, što otvara i problemsku perspektivu prekarnosti, odnosno ekonomske nesigurnosti. U tom kontekstu nakratko se analizira i primjer Hrvatske.
The interpretation and utilization of cultural heritage and Its values by young people in Slovenia
Authors: Fakin Bajec Jasna
Published: January 2020

This paper analyses approaches to involving young people in the processes of valuation, interpretation and utilization of local heritage to meet contemporary development challenges. The starting point is the finding that European development strategies highlight the various potentials of cultural heritage, but young people from western Slovenia hardly see any of these potentials. Moreover, the presented ethnographic research results show that young people are not very interested in heritage practices undertaken in their cities or villages. This paper’s results demonstrate how heritage may be introduced to young generations, how youth understand local heritage and its values, and what they think about voluntary activities in cultural fields.
Paradigms of Library and Information Science in the Networked Society
Authors: Krauls Ineta
Published: January 2020

Essential premises and problems of the Library and Information Science (LIS) paradigms’ shift (uncertainty of scientific boundaries and fragmentation; various historical, sociological and organizational conditions) are analyzed on the case of Vilnius University. Since 1949 Lithuanian university studies and research in the field of LIS had experienced few changes (periods of paradigm shift), that essentially had been preconditioned by general LIS and society’s development tendencies. The case of Vilnius University allows us detect humanitarian, sociological, informational and communicational paradigms. Their formation takes the background in the epistemological relations of LIS to the other sciences and in the necessity to solve practical problems of libraries as well as other information institutions. One of the major challenges that LIS has to face is the requirement to research complicated questions: information services to the society in general as well as individuals; information needs; work of information institutions. Multidimensional problems of LIS field require interdisciplinary view as well as methodological and theoretical transformations. Constant interaction of LIS with other science fosters interdisciplinary research fields and threatens the integrity of LIS on theoretical and methodological levels. Instability of LIS status displays itself not only in theoretical, but also in organizational aspects. Uncertain limits of LIS and tight relations with other sciences enforce dissociation or integration of academic units, while extensive amount of research tasks in LIS field is hardly being performed due to the lack of personnel.
Lithuanian Old Personal Library Research: Status Quo
Authors: Braziūnienė Alma
Published: January 2020

The article analyzes the state of research on the old historical Lithuanian personal libraries, including the means of inquiry and sources. The author also analyzes the similarities between personal library research and institutional library research.It was found that book ownership marks are the main and most widely applicable personal library research source. This resource is used productively after Lithuanian scientific libraries have accelerated the scientific cataloging of the old books and started recording the provenance of each item (such catalogs include catalogs of the Elsevier, the Aldine, paleotypes, Bibliotheca Sapiehana by Vilnius University Library, Lituanica catalog by the Wroblewski Library of the Lithuanian Academy of Sciences, and the catalog of the 15th and 16th century books in Kaunas libraries by Kaunas County Public Library). The main and most widely applied Lithuanian historical personal library method is the provenance method, although good results are obtained using the hybrid method. The author concludes that most publications on old personal historic Lithuanian libraries limit their subjects to the personal libraries of nobility, state and religious actors (till the 19th Century) and the 19th century Lithuanian intellectuals. Historic personal libraries of lower-class individuals warrant more research (one example is Zigmantas Kiaupa’s publication about the book collections of ordinary old Kaunas’ citizens, published in 1985).