bluuebunny/crossref_metadata_2025 huggingface dataset:
History, philosophy and methodology of social sciences and humanities
Authors: Orehov Andrey , Nizhnikov Sergey , Reznik Yuriy
Published: October 2022

The textbook deals with the main problems of history, philosophy and methodology of social sciences and humanities. Special emphasis is placed on such issues as the subject of social humanities, methods of social humanities, the picture of the world in social humanities, social pseudoscience, ideology and social humanities, ethics of a social scientist, social ontology, social epistemology, etc. The purpose of the textbook is to introduce students to the methods of research in the subject areas of social and humanitarian sciences and teach them the skills to conduct independent scientific research in accordance with the criteria and requirements set by the modern logic of the development of social and humanitarian knowledge.
Meets the requirements of the federal state educational standards of higher education of the latest generation.
It is intended for bachelors, undergraduates and postgraduates studying philosophy of science, as well as other disciplines related to philosophical and methodological problems of social and humanitarian knowledge.
Interpol in the system of international cooperation in countering transnational organized crime
Authors: Puzyreva Yuliya , Kotlyarov I. , Solukov A.
Published: October 2022

The monograph identifies the main stages in the history of the formation and development of Interpol, reveals the theoretical and applied aspects of police cooperation on the basis of a complex of operational, informational, educational, analytical, expert resources of Interpol, and also examines promising areas of international cooperation of the competent authorities of states to combat modern challenges and threats from transnational organized crime.
It is intended for researchers, practicing lawyers, teaching staff, students and postgraduates of law schools, as well as practitioners of law enforcement agencies.
Permissible limits of copyright restrictions in the context of domestic, foreign and international law
Authors: Balabanova Evgeniya , Voynikanis E. , Minbaleev A.
Published: October 2022

The monograph is devoted to the study of the problem of determining the permissible limits of copyright restrictions on works of science, literature and art. Limitations of exclusive rights to copyright objects, as well as their protection, have a serious impact on the formation of the general cultural context of the intellectual space and the socio-economic development of society as a whole. The free use of copyright objects acts as one of the key creative incentives and is of fundamental importance for balancing the interests of participants in legal relations arising in connection with the creation and use of works. An attempt has been made to carry out a comprehensive analysis of international, foreign and domestic experience of legal regulation in the field under consideration, covering both theoretical and practical aspects, in the context of historical retrospect and taking into account current trends in the development of modern copyright. A wide range of issues related to the functioning of the mechanism for limiting exclusive copyrights, modeling the system of criteria used to assess the permissibility of restrictions within the Romano-Germanic and Anglo-American legal traditions are considered. Special attention is paid to the development of new approaches to understanding possible ways to adjust the current legal regulation (many proposals for improving civil legislation are reflected). Based on the study of the limits of limitation of exclusive copyrights, the conceptual foundations for the formation of a restrictive mechanism have been developed, as well as a system of factors of fundamental importance for determining the nature of its functioning has been formulated.
For a wide range of readers interested in copyright issues. It can be useful for students, postgraduates and teachers of law schools.
Development of ideas of creative activity of students in the theory and practice of Russian and German pedagogy of the late XIX - early XX century
Authors: Gerasimova Kseniya , Allagulov Artur , Boguslavskiy M. , Neborskiy E.
Published: October 2022

The monograph examines the development of ideas of creative activity of students in the theory and practice of Russian and German pedagogy of the late XIX — early XX century.
It is addressed to scientific and pedagogical workers, teachers of pedagogical disciplines, students, undergraduates, postgraduates, doctoral students, applicants for areas of pedagogical training, students of the system of advanced training and professional retraining of pedagogical personnel, employees of the education system.
Returning to Chekhov
Authors: Zvinyackovskiy Vladimir , Larionova Marina , Bushkanec Liya
Published: October 2022

"Chekhov's intellectual" — who is he in the XXI century? A character of modern life or forgotten classics? A nostalgic motif of older generations or a concept of European culture?
For the answer, it makes sense to return to the origins at the intersection of the most important discourses of the late XIX century: ethnic and ethical, pedagogical and political, theatrical, urban, etc.
The author of the monograph, a representative of the last generation of Soviet Czech studies, a student of Z.S. Paperny and A.P. Chudakov (the book ends with memoir episodes about them), returning to Chekhov's work in our days, is aware of the change in the nature of its relevance and considers it in a new perspective.
Audit
Authors: Kas'yanova Svetlana , Kevorkova Zh. , Safonova M. , Laktionova N.V. , Kulish N.V.
Published: October 2022

The textbook contains a set of developments in the field of audit. All the material is distributed on topics between theoretical, practical and seminar classes, as well as independent work of students in the form of discussions, presentations, test tasks, situational tasks. The theoretical and applied aspects of the organization and conduct of the audit are described, which allow assessing the effectiveness of the management of its affairs with due completeness and reliability. The latest legislative changes have been taken into account.
The use of methodological materials will allow each student to rationally allocate their time while studying the discipline, get a sufficiently adequate aggregate score and rating assessment and form professional skills.
Meets the requirements of the federal state educational standards of higher education of the latest generation.
For undergraduate students studying in the field of training 38.03.01 "Economics".
The poem is a catalog in the German-language poetry of the XX century
Authors: Andreyushkina Tat'yana , Kuchumova Galina , Vasil'eva Galina
Published: October 2022

The purpose of the monograph is a comprehensive analysis of the genre of the catalog poem in the German-language poetry of the twentieth century, stable elements of its structure, contamination with other genres, the use of catalog elements in other lyrical genres. The research is not only carried out in the historical and literary aspect, but also involves a comparative analysis of individual texts, the study of tradition and innovation in each of the literary directions, the manifestation of interest in the genre in the work of individual authors, their contribution to the development of the genre, the definition of the most important internal and external dominants of the genre.
For a wide range of readers interested in German-language poetry. It can be useful for students, postgraduates and teachers of philological universities and faculties.
Installation, operation and repair of electrical equipment of industrial enterprises and installations
Authors: Sibikin Mihail , Mel'nichenko E. , Vel'k O.
Published: October 2022

The tutorial provides general information about materials, tools, devices and mechanisms used by electricians and electricians in the course of work. Some technical characteristics of the most important electrical installations are given. The methods and techniques of installation, operation, repair of electrical equipment and electrical networks of industrial enterprises are considered.
For students of secondary vocational education institutions in the specialty 13.02.11 "Technical operation and maintenance of electrical and electromechanical equipment (by industry)". It can be useful for retraining and advanced training of specialized specialists, masters of industrial training, workers in production.
Social management of career guidance activities in educational institutions of a modern metropolis
Authors: Tihonova Elena , Dianina Elena , Egorov Vasiliy , Karpova Elena
Published: October 2022

The monograph is devoted to the analysis of the theoretical and methodological foundations of the study of the management system of professional orientation of high school students of general education institutions in the conditions of a modern metropolis. The central place in the work is occupied by the author's structural and functional model of management of the system of career guidance. A large theoretical material based on the results of the author's research is presented, which allows to formulate and substantiate a number of new scientific provisions that open up a promising direction in the study of the problems of career guidance in the mainstream of management sociology. The results of a multidimensional analysis of the data of the author's empirical studies of the influence of macro- and microsocial factors on the effectiveness of career guidance management in educational institutions of the modern Russian metropolis on the example of Moscow are presented.
It is intended for a wide range of specialists in the field of sociology of management, pedagogy, sociology of education, as well as for heads of sociological services, teachers, graduate students, students, anyone interested in the issues of professional orientation of young people in a modern metropolis.
Fundamentals of mechanical engineering technology
Authors: Shrubchenko Ivan , Duyun Tat'yana , Hurtasenko Andrey , Voronkova Marina , Timiryazev V.A. , Pelipenko N.
Published: October 2022

The textbook provides information from the theory of basing and dimensional circuits; quality characteristics and indicators of manufacturability of products are considered, as well as the principles of group processing organization and features of technology design for numerically controlled machines.
Complies with the federal state educational standards of higher education of the latest generation.
It is intended for undergraduate students studying in the areas of training 15.03.01 "Mechanical Engineering", 15.03.05 "Design and technological support of machine-building industries", specialists in the specialty 15.05.01 "Design of technological machines and complexes", studying the disciplines "Fundamentals of mechanical engineering technology", "Mechanical engineering Technology", as well as to perform coursework and qualification work on mechanical engineering technology.
HR management strategy
Authors: Vdovina Ol'ga , Reznik Semen , Sazykina Ol'ga
Published: October 2022

The textbook discusses the key concepts of the discipline "HR Management Strategy". The first section reveals the theoretical aspects of strategic personnel management. The second section examines the specifics of the HR management strategy depending on the basic and competitive strategy of the organization, the stage of the organization's life cycle, personnel policy and other factors. The third section presents the main components of the HR management strategy: recruitment, selection and adaptation of personnel, motivation and stimulation of personnel, development of the organization's personnel.
Meets the requirements of the federal state educational standards of higher education of the latest generation.
For students of higher educational institutions studying in the field of training 38.04.02 "Management" (master's degree level), as well as in the areas of training 38.03.02 "Management" and 38.03.03 "Personnel Management" (bachelor's degree level).
Cyclical development of the economy and the financial sector
Authors: Pischulov Viktor , Ivanickiy Viktor , Dyatel Evgeniy
Published: October 2022

The monograph is devoted to certain difficult-to-understand issues of the cyclical development of the economy, the study of the features of the functioning of the system of economics and finance in the conditions of cyclical development. The forms of financial cycles are investigated, as well as their interrelation and interdependence with economic cycles in general. As a scientific novelty, it should be noted the identification and study of elementary financial cycles of various types. The study of the problems of the cyclical nature of the financial sphere allows us to penetrate into the essence of monetary relations and finance. The financial sphere is considered as an integral structure, united by various forms of interaction of its constituent parts or subjects.
It can be useful for scientists, practitioners in the field of finance and financial policy, as well as for students of all forms of training in the field of preparation 38.03.01 "Economics" in accordance with the profiles "Finance and Credit", "Banking", "Financial markets and exchange technologies".
The richness of color in Russian
Authors: Harchenko Vera
Published: October 2022

The monograph explores direct color designations with various ways of translating color characteristics: emotional, figurative, playful, tint. The analysis of various objects embodying color (animals and plants, food and minerals, fabrics and natural phenomena) is given. Some color meanings lost in modern Russian are analyzed. Color in painting, iconography, fiction, poetry, colloquial discourse, science, medicine, production, folklore is also included in the structure of the book. Throughout the narrative, the amazing subtlety of the Russian language in the transmission of the color palette is emphasized.
It can be useful to students, postgraduates and teachers of philological universities and faculties, as well as to all readers interested in the issues of color designation.
General psychology. Workshop
Authors: Sapogova Elena , Dubrovina Irina , Obuhova Lyudmila , Karandashev Yuriy
Published: October 2022

The textbook contains a set of educational tasks grouped into six substantive sections ("Introduction to psychology", "Formation of the psyche and consciousness", "Socio-cultural formation of a person", "Person, individual, personality, personality, subject", "Individual psychological characteristics of a person", "Higher mental functions") and organized according to the level of conditional complexity. The tasks are aimed at in-depth mastering of knowledge in the discipline "General Psychology", the development of skills and abilities of free operation of psychological material, stimulating the development of professional thinking and heuristic search of students, the formation of professional mentality and individual research motivation.
Complies with the federal state educational standards of higher education of the latest generation.
It is intended for classroom and independent study of the discipline "General Psychology" during the professional training of psychologists at universities and is focused on the formation of competencies of undergraduate and graduate students in the field of Psychology, psychology teachers, graduate students and practical psychologists who improve their qualifications in the field of psychology.
SELF-SENSING AND SELF-POWERING MULTIFUNCTIONAL STRUCTURES
Authors: BARRI KAVEH , ZHANG QIANYUN , WANG ZHONG LIN , ALAVI AMIR H.
Published: October 2022

Developing lightweight multifunctional structures with sensing, energy harvesting and mechanical tunability capabilities has been the holy grail for scientists. This study presents our vision toward the next stage of the technological revolution in multifunctional structures science where a so-called Engineered Self-aware Structure (ES2) can sense, empower and program itself using its constituent components. We discuss the creation of such smart structures through the fusion of advanced metamaterial and energy harvesting technologies. The ES2 concept is validated via designing a composite beam prototype. The results imply that the fabricated multifunctional beam can measure the amplitude of the applied load and harvest the energy from the mechanical excitations. We demonstrate the broad application of the proposed concept in aerospace, biomedical, and civil engineering areas for designing multiscale self-sensing and self-powering devices.
OPTIMIZATION OF A STRUCTURAL HEALTH MONITORING SYSTEMS INTEGRATION IN LAMINATED COMPOSITE CURED IN AUTOCLAVE
Authors: KERGOSIEN NINA , GAVÉRINA LUDOVIC , RIBAY GUILLEMETTE , SAFFAR FLORENCE , BEAUCHÊNE PIERRE , MESNIL OLIVIER , BAREILLE OLIVIER
Published: October 2022

Composites represent approximately 50% of the weight of structural parts in new aircraft as Airbus 350 or Boeing 787. Damages could occur on these parts and their monitoring is required for the safety of users. A Structural Health Monitoring system composed by a Lamb’s waves generator and a sensor is a privileged candidate to detect such damages. The flexibility of composite manufacturing allows the integration of such a system. The topic of this study is to optimize the integration of a Structural Health Monitoring system in aircraft structural parts. The present article focuses on the optimization of the integration method of a piezoelectric Lead Zirconate Titanate transducer into laminated composite (Carbon/Epoxy), cured in autoclave according to aircraft manufacturing requirements. The health state of the integrated transducer with three connecting methods is evaluated using X-ray scanning. Punctual stress is responsible for the crack of the transducer occurred during composite curing. The connecting method with aluminum sheet and silver joint is selected because it minimizes local stresses and keeps the transducer integrity. The cohesion between the integrated transducer and the host material is observed by optical microscopy, it shows the presence of void zones located in the PZT edges. A Laser Doppler Vibrometer scanning shows the ability of the integrated piezoelectric transducer to generate Lamb waves.
Nie nad rzekami Babilonu : antologia poezji jidysz w powojennej Polsce
Authors: Ruta Magdalena
Published: October 2022

Prezentowana antologia ma przybliżyć nieobecną (lub obecną w niewielkim wymiarze) w świadomości polskiego (i światowego) czytelnika poezję jidysz, która powstawała i była publikowana w powojennej Polsce przez ponad dwadzieścia lat. Zasadniczym kryterium, które decydowało o doborze utworów umieszczonych w tym tomie, uczyniłam czas i miejsce powstania i/lub publikacji. Oznacza to, że zaprezentowałam tutaj jedynie te wiersze, które powstały w latach 1945-1968 w Polsce i tutaj zostały opublikowane. W antologii znalazły się też utwory napisane, a często również wydane wcześniej – w międzywojniu lub w czasie wojny, które wolą autorów zostały przypomniane w powojennej Polsce poprzez umieszczenie ich w zbiorach publikowanych po 1945 roku. W doborze tekstów uczyniłam jeden wyjątek od przyjętej zasady czasu i miejsca powstania i/lub publikacji. Dotyczyło to utworów odnoszących się do Polski i powstałych jeszcze w Polsce, ale w niej nieopublikowanych ze względów cenzuralnych, jak również utworów o Polsce napisanych już po emigracji z ojczyzny. Mowa o niektórych wierszach Bineckiego, Gradego, Hellera, Olickiego, Segala, Sfarda oraz Szklara. Uczyniłam tak, ponieważ uznałam, że ukazanie całej gamy emocji, jakie towarzyszyły ostatnim chwilom przed wyjazdem, a także już w nowym miejscu zamieszkania, może być ważne – zwłaszcza dla czytelnika polskiego – ponieważ pozwala zrozumieć, czym Polska była dla wymienionych pisarzy – a zapewne i dla całej ich generacji, a także jak trudna była decyzja o wyjeździe i co ją spowodowało. Fragment Słowa wstępnego
Política exterior colombiana y performatividad: ¿Un 'buen miembro' del Orden Internacional Liberal?
Authors: Palma-Gutiérrez Mauricio , Long Tom
Published: October 2022

La performatividad es un aspecto fundamental de la política exterior. En el caso colombiano, una mezcla teatral de acciones y retórica se entrelaza con la aspiración gubernamental a que el país represente el papel de un “buen miembro” del Orden Internacional Liberal (oil). Esto afecta las percepciones de tomadores de decisiones sobre los intereses nacionales; al tiempo, la actuación desplegada contribuye a la co-constitución y legitimación del oil. En este artículo ilustramos cómo los gobernantes colombianos dirigen sus actuaciones para posicionarse en este escenario, cómo identifican audiencias relevantes, cómo desarrollan guiones y cómo despliegan su performance. Usamos este marco teórico para interpretar dos casos sustanciales en la política exterior colombiana: la respuesta a la migración venezolana y la llamada “guerra contras las drogas”. Concluimos recalcando cómo las actuaciones de Estados no hegemónicos, como Colombia, están atravesadas por múltiples significados, no necesariamente fijos, útiles para gestionar su estatus a escala internacional.
Özel Eğitim Öğretmenlerinin Öğrencileriyle İlgili Sosyal Medya Paylaşımlarının İncelenmesi
Authors: AK Gamze , KILINÇ Şule , YAZÇAYIR Gülcihan , KIYAK Üzeyir Emre
Published: October 2022

Bu araştırmada özel eğitime ihtiyacı olan çocukların kişisel bilgilerinin sosyal medya uygulamalarında paylaşılmasının çocuk hakları bağlamında doğuracağı sonuçlara ilişkin bilgi vermek ve özel eğitim öğretmenlerinin özel eğitime ihtiyacı olan öğrencilerini içeren paylaşımlarını incelemek amaçlanmıştır. Nitel yöntemlerden doküman analizi tekniğinin benimsendiği bu araştırmada Instagram uygulamasındaki herkese açık 52 kişisel hesaptaki 1951 fotoğraf ve 1262 video incelenmiştir. Analizler sonucunda bir ana tema ve dört alt tema belirlenmiştir. Özel eğitime ihtiyacı olan çocukların fotoğraflarındaki ve videolarındaki görsel kimliklerinin çoğunlukla gizlenmediği, yüz ve bedensel özelliklerinin açıkça paylaşıldığı, bunların yanı sıra fotoğraf veya video paylaşımlarının açıklamalar kısmında çocukların adlarının da gizlenmeden yazılı olarak paylaşıldığı sonucuna ulaşılmıştır. Öğretmenlerin özel eğitime ihtiyacı olan çocuklarla kucağına alma, öpme ve sarılma gibi fiziksel temasları olduğu ve fiziksel temasa ilişkin en çok görülen davranışların da bunlar olduğu ortaya çıkmıştır. İncelenen hesaplarda görsel içerikler ile yazılı açıklamaların uyumlu olduğu paylaşımların daha fazla olduğu belirlenmiştir. Son olarak yapılan paylaşımlardaki mekânların büyük çoğunluğunun okul veya özel eğitim kurumlarının bir parçası olan derslik, bahçe, oyun alanı gibi alanlar olduğu belirlenmiştir.
Assessing the Effects of a Winter Wheat Cover Crop on Soil Water Use, Cotton Yield, and Soil Organic Carbon in No-Till Cotton Production Systems
Authors: Himanshu Sushil K. , Ale Srinivasulu , DeLaune Paul B. , Singh Jasdeep , Mauget Steven A. , Barnes Edward M.
Published: October 2022

Highlights

Soil water depleted by the cover crop was quickly replenished by spring precipitation.

Higher soil water was maintained during the cotton growing season under the cover crop treatment.

Cover crops improved soil organic carbon under both irrigated and dryland conditions.

Cover crops enhanced crop water productivity under both irrigated and dryland conditions.

Abstract. Cover crops provide many soil health benefits to agricultural systems. An interest in growing cover crops in cotton (Gossypium hirsutum L.) production systems has been increasing in the Texas Rolling Plains (TRP) region. Due to limited rainfall and groundwater availability, producers in this semi-arid region are concerned that winter cover crops can reduce soil water availability for a subsequent cotton crop. In addition, the long-term effects of cover crops on soil organic carbon (SOC) are not well studied in this region. The overall goal of this study was to assess the long-term effects of growing a winter wheat (Triticum aestivum) cover crop on soil water, SOC, seed cotton yield, and crop water productivity (CWP) under irrigated and dryland cotton production systems using the Decision Support System for Agrotechnology Transfer (DSSAT) model. Measured data from cover crop experiments conducted at the Texas A&M AgriLife Research Station at Chillicothe from 2011 to 2020 were used to evaluate the CROPGRO-Cotton and CERES-Wheat modules in the DSSAT Cropping System Model. The average percent error (PE) between the simulated and measured seed cotton yield was 0.3% and -0.9%, and that between the simulated and measured aboveground wheat biomass was 1.4% and -3.4% during the calibration and evaluation periods, respectively. For the simulation of SOC, the PE was 8.5% and 7.6% during the calibration and evaluation periods, respectively. Long-term (2001 to 2020) simulations showed that soil water was reduced substantially by the winter wheat cover crop before its termination. However, depleted soil water was quickly replenished by spring precipitation and maintained at a higher level during the cotton growing season. Winter wheat cover crops can potentially improve SOC in irrigated and dryland cotton production systems. The CWP of cotton also improved with a winter wheat cover crop under both irrigated and dryland conditions. We concluded that cover crops could potentially improve soil health and provide a sustainable environment for TRP cotton production. Keywords: CERES-Wheat, CROPGRO-Cotton, DSSAT, Soil health, Texas Rolling Plains (TRP).
Temperature-compensated fiber-optic online monitoring methodology for 3D shape and strain of near-space airship envelope
Authors: Sun Guangkai , Li Mohan , Wang Yuanfeng , Zhou Kangpeng , Hu Xuewen , Guo Zhi , Zhu Lianqing
Published: October 2022

Near-space airships are high-end
airships that are being
vigorously developed in the aerospace industry. It has important
application value in the telecommunication, surveillance, monitoring,
remote sensing, and exploration fields. The envelope is the key
component that provides lift to the airship. Online monitoring of
envelope status is critical to ensuring airship performance, safety,
and reliability. However, online monitoring of the 3D shape and strain
of the airship envelope is still a challenging task. A hybrid
multi-core and single-core fiber-optic monitoring method with a
temperature self-compensation function is proposed to address this
issue. The method uses multi-core fiber optic sensors, 3D curves, and
a surface reconstruction algorithm to obtain the 3D shape of the
envelope. Temperature decoupling of the sensing signal is carried out
via sensors on the central core of the multi-core fibers that are only
sensitive to temperature, thereby eliminating the influence of
temperature changes on the measurement accuracy. The strain field of
the envelope skin is measured by single-core fiber optic sensors and a
strain interpolation algorithm. The accuracy of the proposed method is
experimentally validated. The results show that the 3D shape
measurement error of the envelope skin is 4.82% when the skin is bent
in the range of

10

m

−
1

−

15.38

m

−
1

. When the ambient temperature changes
in the range of

−

50

∘

C

−

150

∘

C

, the position measurement error
caused by the temperature change is only 1.2% of the effective
measurement length (160 mm) of the multi-core fiber optic
sensor. When the skin is stretched in the range of

500

−

5000

µ
ε

, the measurement error of the average
value of the skin strain field is only 0.75%. This proves that the
proposed method can simultaneously measure the 3D shape and strain
field of the envelope skin and also effectively suppress the influence
of ambient temperature changes on the measurement accuracy. The
proposed method has application prospects in the online monitoring of
airship envelopes.
Simulation of the temporal resolution uniformity of a dilation framing camera
Authors: Lin Kaixuan , Luo Qiuyan , Chen Jiajie , Wang Jiaheng , Huang Junkun , Wang Dong , Liu Jinyuan , Cai Houzhi
Published: October 2022

The temporal resolution uniformity of a time-dilation framing camera is studied, and the ideal photocathode (PC) pulse curve is determined, while the temporal magnification factor is kept constant. To obtain the ideal curve, a series of linear pulses with the same slope are superposed. The variance in the temporal resolution and the number of linear pulses required are compared, while the superposition results with different slopes are used as the PC voltage. As the slope of the linear pulses decreases, the variance decreases, which means that the uniformity of the temporal resolution is improved, but the number of linear pulses required increases. In this study, linear pulses with a slope of 1 V/ps are superposed. Nine linear pulses with a front edge time of 200 ps, amplitude of 200 V, and flat top time of 1 ns are superimposed to approximate the ideal PC pulse curve with a constant temporal magnification factor of 10; the trigger times of the pulses are 0, 0, 0, 185, 200, 350, 450, 605, and 790 ps. When the superposition result is applied as the PC voltage and the measured signal is synchronized to the PC pulse at 128 ps–1 ns, the temporal resolution error is within 5%.
Calibration of a multiview display with a tilted parallax barrier for reduction of nonlinear extrinsic crosstalk
Authors: Kim Joonsoo , Eum Homin , Yun Kugjin , Shin Hong-Chang , Lee Gwangsoon , Seo Jeongil
Published: October 2022

Multiview displays, which are capable of displaying different view-images for viewers at different positions, can suffer from undesirable view-image mixing, called crosstalk. In this paper, we propose a method to minimize a class of crosstalk that occurs due to misalignment of flat panel displays and parallax barriers that constitute multiview displays. More specifically, our method is aimed at cases where flat panel displays and parallax barriers are non-parallel. First, we introduce our framework, which associates homography matrices to sets of pixels visible through parallax barriers. Then, we propose an iterative method for finding pixels that are visible for a view-point. By using a stripe test pattern, the homography matrix that corresponds to a set of visible pixels can be found by monitoring the deformation of the stripe test pattern. Last, we experimentally check the validity of the iterative method and demonstrate that the proposed method successfully corrects the geometric distortion of a 3D image.
Camera-guided real-time laser ranging for multi-UAV distance measurement
Authors: Ojdanić Denis , Gräf Benjamin , Sinn Andreas , Yoo Han Woong , Schitter Georg
Published: October 2022

This paper presents the design and implementation of a scalable laser
ranger finder (LRF)-based prototype system, which enables distance
measurement and precise localization of multiple unmanned aerial
vehicles (UAVs) in real-time. The system consists of a telescope and
camera as the image acquisition components, supplemented by an LRF and
a fast steering mirror (FSM) to obtain the distance measurement. By
combining the optical path of the camera and the LRF through a
dichroic mirror, the LRF is accurately aligned by the FSM based on the
angular position of a UAV within the camera field of view. The
implemented prototype successfully demonstrates distance measurements
of up to four UAVs with a bandwidth of 14 Hz per object.
Compact and broadband design of an 850 nm 2 × 2 3-dB directional coupler with a shallowly etched SWG gap
Authors: Dong Yue , Shen Hao , Xu Yin , Zhang Bo
Published: October 2022

A compact and broadband

2

×

2

3 dB directional coupler (DC)
is designed at the 850 nm wavelength region based on the
silicon nitride platform. The proposed DC is equipped with a shallowly
etched subwavelength gratings (SWG) gap so that the length of the
coupling region is effectively reduced to 7.8 µm for
equally splitting the fundamental TE polarization state. Such a DC
coupling region is much more compact than that using empty and pure
SWG gaps. Meanwhile, the DC working bandwidth is determined to be
broader than 106 nm, and the insertion loss is always kept
under an acceptable level of 0.6 dB over the entire wavelength
region. Considering that the shallowly etched device requires two
photoetching processes in manufacturing, we did a numerical analysis
to characterize the fabrication tolerance under a minimum overlay
accuracy of 20 nm in both

x

and

y

directions. Such overlay mismatch
only increases the maximal imbalance from 0.55 to 0.6 dB at the
center wavelength. In addition, we discussed the impact of the
proposed DC in its potential application, i.e., optical
coherence tomography. The results show that the proposed DC is able to
support a high axial resolution of 3.77 µm, and the
20 nm overlay mismatch leads to neglected axial resolution
degradation.
Application of porosities in the transparent electrode layer of a perovskite solar cell for performance enhancement
Authors: Panda Arnab , Palodhi Kanik , Chakraborty Rajib , Maiti Soumen
Published: October 2022

Substitution of monocrystalline or polycrystalline silicon as active materials in
photovoltaics with highly efficient perovskite materials is quite
common. Although perovskite materials offer better flexibility, are
cost-effective, and have higher conversion efficiency, they still
require structural modifications for better performance. This study
quantitatively investigates how mesoporous top surfaces improve the
performance of methylammonium lead iodide (

C
H

3

N
H

3

P
b
I

3

) perovskite solar cells. In fact,
both the diameter and the depth of the pores have been tuned to
achieve better performance. The performance is further optimized by
replacing mesoporous active material with planar active material
coated with mesoporous indium tin oxide (ITO). We have demonstrated
that the proposed structure achieves the maximum conversion efficiency (

η

) of 27.43% with an open-circuit
voltage (

V

O
C

) of 1.07 V and a short circuit
current density (

J

S
C

) of

29.09

m
A

/

c
m

2

, with a fill factor (FF) of
88.10%.
Designing a single-mode anomalous dispersion silicon core fiber for temporal multiplet formation
Authors: Ghosh Binoy Krishna , Ghosh Dipankar , Basu Mousumi
Published: October 2022

A highly nonlinear single-mode anomalous dispersion silicon core fiber (SCF) is
suitably designed and optimized to generate a high repetition rate
pulse train in the temporal domain from a single input pulse at a
sufficiently shorter optimum length in comparison to silica-based
standard fibers used for the same purpose. The large amount of
Kerr-induced nonlinearity of a SCF is effectively utilized here such
that input Gaussian pulses or pulse trains transform into a highly
repetitive temporal multiplet. The effects of free-carrier
generation-induced change in absorption and dispersion are included
while studying the nonlinear pulse propagation through the SCF. To
declare the generated pulse as a superior-graded triplet, a

Q

parameter, as a function of relative
pulse parameters of the individual pulses of a triplet, is defined for
the first time, to the best of our knowledge. Different pulse
parameters are thoroughly optimized as well as the effect of external
gain is examined from the perspective of requirement of shorter fiber
length and development of quality triplets. Finally, the work is
further extended for the formation of quadruplet pulses by the same
type of SCF. It is to be mentioned here that such a methodical study
for the generation of a temporal multiplet using a semiconductor core
fiber has not been reported earlier.
Practical method for dynamic color holographic display
Authors: Peng Xianjun , Shi Yile , Ren Zhijun , Ying Yuchen
Published: October 2022

A practical method for dynamic color holographic display by using a
computer-generated hologram (CGH) with a high space-bandwidth product
is proposed, and a dynamic color holographic display system is
designed by a space-division method. First, three primary color CGHs
of different frames from a color movie are fabricated on holographic
recording material by a self-made CGH microfilming system. Secondly,
the CGH is fixed on an X-Y moving stage, which is controlled by the
system in order to bring the CGH to the appointed position. Thirdly,
three primary color lasers are used to reconstruct the CGH. The switch
of the lasers is controlled by the system synchronous with the X-Y
moving stage. The color video with high quality can be obtained after
filtering the three primary color reconstructed wavefronts. The
experimental results demonstrate that the proposed dynamic color
holographic display method is effective. It has practical application
value in high-quality CGH display.
LED communications with linear complexity compensation of dynamic nonlinear distortion
Authors: Stepniak Grzegorz
Published: October 2022

An in-depth study of the second order Volterra kernel of light emitting
diodes (LEDs) is provided, with a special focus on compensation of
dynamic nonlinear distortion generated by the LED when used as a
communications signal transmitter. It is shown that from the
factorization of the kernel in the frequency domain follows
a simplified time-domain model for LED nonlinearity,
consisting of three operations: two linear filtrations and squaring.
Next, using the

p

th inverse theory, the corresponding
block structures of nonlinear pre- and postdistorters are derived. As
it turns out, they exhibit linear computational complexity. It is
shown that the model coefficients defining the kernel may be estimated
up to the Nyquist frequency. Numerical results indicate that pre- and
postdistortion achieve the same performance with respect to receiver
signal to noise power ratio (SNR) and have a considerable advantage
over linear equalizers. However, in a practical scenario, the
predistortion increases the peak to average power ratio of the
transmitted signal (unless it is not high already), possibly leading
to performance inferior to postdistortion. Finally, it is shown that
the simplified equalizer based on the LED model has roughly identical
performance to the regular, quadratic Volterra equalizer.
Low-pixel-count imaging FMCW lidar
Authors: Gazizov Iskander , Zenevich Sergei , Rodin Alexander
Published: October 2022

We demonstrate the imaging capability of a frequency modulated continuous wave (FMCW) lidar based on a fiber bundle. The lidar constructs velocity and range images for hard targets at a rate of 60 Hz. The sensing range is up to 30 m with 20 mW output power. The instrument employs custom electronics with seven parallel heterodyne receivers. An example of image recovery is presented on 6-pixel “pictures” of a spinning disk and a drone hovering in the air. In experiments, we also tested the laser tuning linearity correction with a phase-locked loop. We see the practicality of such a low-pixel-count system as a boost in scanning rate of conventional lidars or for direct target imaging with a further upgrade of pixel count.
Spatial structure of the refracted field of a Gaussian light beam at total internal reflection
Authors: Serdyuk Vladimir M.
Published: October 2022

The two-dimensional spatial structure of a stationary monochromatic refracted field is studied theoretically for the case of its exciting in a transparent homogeneous medium by incidence of a Gaussian light beam under total internal reflection. For that, the exact solution of refracted field in the form of a Fourier integral is used. It is shown that this spatial structure exhibits properties characteristic of the fields in strongly inhomogeneous and absorbing media: field attenuation as it propagates deep into the medium, noticeable diffraction beam divergence near the boundary itself, non-rectilinear nature of propagation in the medium, and non-exponential attenuation along its depth.
Nonclassicality and entanglement as a quantifiable measure for phase estimation
Authors: Wei Chao-Ping
Published: October 2022

We establish an approach to measure the nonclassicality of a two-mode quantum state by extending the method of quantifying nonclassicality for a single-mode quantum state. We then discuss the nonclassicality and entanglement properties of several different quantum states, and determine the optimal phase estimation for entangled coherent states (ecs) in the form of nonclassicality and concurrence. Accordingly, a new interferometer (linear and nonlinear) scheme is proposed by modifying a traditional interferometer. Specially, we specify a new normal ordering form of the evolution operator of nonlinear interferometer (NI) using the techniques of integration within an ordered product of operators (IWOP), and obtain the parity signal based on representation of the coherent state. By inputting several common quantum states, we further study the phase sensitivity of the linear interferometer (LI) and NI with parity detection, and perform a detailed comparison among the different input states schemes. Furthermore, we quantitatively investigated the effect of nonclassicality and entanglement on the phase sensitivity of two interferometers. These results show that nonclassicality or entanglement is very crucial but not a necessary condition for improving the phase sensitivity of interferometers.
Estimation and removal of backscattered light with nonuniform polarization information in underwater environments
Authors: Wei Yi , Han Pingli , Liu Fei , Shao Xiaopeng
Published: October 2022

The nonuniform of polarization information of backscattered light has always been a neglected characteristic in polarization underwater imaging, but its accurate estimation plays an important role in the quality of imaging results. Traditional polarization imaging methods assume that the degree of polarization and angle of polarization of backscattered light are constant. In fact, the polarization information of backscattering light is gradual, this assumption makes traditional methods work only in a small area of the camera's field of view, in which the change of the polarization information of backscattered light can be ignored. In this paper, by analyzing the distribution of backscattered light, it is concluded that its polarization information has the characteristics of low-rank. Then, the degree of polarization and angle of polarization of backscattered light were estimated by low-rank and sparse matrix decomposition, and the clear scene was reconstructed. Experimental results show that the proposed method breaks through the limitation of the assumption of backscattered light in traditional polarization imaging method, and expands the detection field under the same conditions, which makes it possible to develop polarization underwater imaging method to the direction of large field of view detection.
Mid-infrared Nb4N3-based superconducting nanowire single photon detectors for wavelengths up to 10 µm
Authors: Pan Yiming , Zhou Hui , Zhang Xingyu , Yu Huiqin , Zhang Lu , Si Mengting , Li Hao , You Lixing , Wang Zhen
Published: October 2022

Mid-infrared (MIR) single-photon detection is emerging as an important technology for various applications. Superconducting nanowire single photon detectors (SNSPDs) fabricated with superconducting films with energy gaps of a few meV are natural broadband single-photon detectors. Recently, extending SNSPDs’ operation wavelengths into the MIR region is highly attractive. γ-Nb4N3 has a reduced N content and lower energy gap than the commonly used δ-NbN, making SNSPDs based on γ-Nb4N3 film more sensitive to low energy photons. We report on a Nb4N3-SNSPD based on 62-nm wide nanowire, with an optical absorption enhancement design and an optimized device package for efficient ZBLAN fiber coupling and dark count filtering. The developed device has a unity intrinsic detection efficiency (IDE) in the 1.5–4 µm wavelength region, and the device detection efficiency at 2.95 µm was measured to be 32.5%, with an uncertainty of 12.7%. Furthermore, we reduced the device geometry, and measured 3–10 µm photon response of a device based on 5-nm film and 42-nm nanowire, with an IDE of 95%, 81%, 40%, and 6% for 4.8, 6, 8, and 10 µm, respectively.
Security analysis of a QAM modulated quantum noise stream cipher under a correlation attack
Authors: Zhang Mingrui , Li Yajie , Song Haokun , Zhu Kongni , Zhao Yongli , Zhang Jie
Published: October 2022

Quantum noise stream cipher where encrypted signals are masked by quantum noise and ASE noise provides a physical layer of security. It requires the transmitter and the receiver to share a stream cipher that is generated from a PRNG. Yet a correlation attack threatens its security due to the mathematical properties of PRNG. This paper discusses the security of QNSC system under correlation attacks. Our experiment results find that the security of the whole system depends on the cycle to refresh the seed key and the correlation between the incepted running key, original running key, and seed key. Furthermore, it is important to provide security for the QNSC system by maintaining low optical power. Besides, this new analytical method provides quantitative security analysis for a QNSC system under a correlation attack.
Monolithically integrated mid-infrared sensor with a millimeter-scale sensing range
Authors: Guo Qiangqiang , Zhang Jinchuan , Yang Ke , Zhu Yixuan , Lu Quanyong , Zhuo Ning , Zhai Shenqiang , Liu Junqi , Wang Lijun , Liu Shuman , Liu Fengqi
Published: October 2022

On-chip sensors based on quantum cascade laser technology are attracting broad attention because of their extreme compactness and abundant absorption fingerprints in the mid-infrared wavelength range. Recent continuous wave operation microcavity quantum cascade lasers are well suited for high-density optoelectronic integration because their volumes are small and thresholds are low. In this experimental work, we demonstrate a monolithically integrated sensor comprising a notched elliptical resonator as transmitter, a quantum cascade detector as receiver, and a surface plasmon structure as light-sensing waveguide. The sensor structure is designed to exploit the highly unidirectional lasing properties of the notched elliptical resonator to increase the optical absorption path length. Combined with the evanescent nature of the dielectric loaded surface plasmon polariton waveguides, the structure also ensures a strong light–matter interactions. The sensing transmission distance obtained is approximately 1.16 mm, which is about one order of magnitude improvement over the traditional Fabry–Perot waveguide. This sensor opens new opportunities for long-range and high-sensitivity on-chip gas sensing and spectroscopy.
Distributed vibration sensor with a lasing phase-sensitive OTDR
Authors: Correia Marlon M. , Margulis Walter , Gomes Anderson S. L. , von der Weid Jean Pierre
Published: October 2022

The authors experimentally demonstrate the operation of a lasing phase-sensitive optical time-domain reflectometer (Φ-OTDR) based on random feedback from a sensing fiber. Here, the full output of the laser provides the sensing signal, in contrast to the small backscattered signal measured in a conventional OTDR. In this proof-of-principle demonstration, the laser operates as a distributed vibration sensor with signal-to-noise ratio of 23-dB and 1.37-m spatial resolution.