bluuebunny/crossref_metadata_2025 huggingface dataset:
PENENTUAN STRATEGI PENINGKATAN RETRIBUSI PELAYANAN PERSAMPAHAN/KEBERSIHAN PERMUKIMAN DI KABUPATEN SITUBONDO
Authors: Wulandari Chusla Indah Ayu
Published: February 2019

Abstract: The regional readiness to implement regional autonomy is measured from its financial capability that mainly sourced from the Regional Own-Source Revenue (PAD). The problem is that regional retributions as one of the PAD’s components have not been able to contribute significantly to the overall regional revenue. One of the causes is the lack of potential sources exploration. This also happened to the retribution of the waste management services of the settlement in Situbondo Regency. This study aims to identify opportunities, threats, strengths, weaknesses, and strategies that can be applied to increase the waste management services of the settlement in Situbondo Regency. The strategy is formulated by using Internal External (IE) and Strengths, Weaknesses,Opportunities, and Threats (SWOT) matrixes. Findings of the research show that opportunities and threats are consisted of the potential retributions payer, increasing numbers of housing, public awareness, parliament control, retribution rates, sanctions for the retribution payer, and competitors. The strengths and weaknesses are consisted of coordination between legislative party and relevant insitutions, the quantity and quality of the retribution collector, waste services, leakage control, quantity of the waste hauler, facilities and infrastructure, socialization, SOP, retribution tariff, and retribution contribution to the PAD. The main strategy to increase the revenue from the waste management service is the expansion strategy in the form of extensification by extending the coverage area of the retribution.

Keywords: Strategy, Waste Services Retribution, Settlements.
ANALISIS FINANCIAL DISTRESS DAN BEBERAPA VARIABEL PREDIKTORPADA SEKTOR PERBANKAN DI INDONESIA
Authors: Sumani Sumani , Setiawan Andri
Published: February 2019

Abstract: The Purpose of this study is (1) to analyze financial distress as predictor variables of financial difficulty levels banking which is listing on the Stock Exchange (BEI), and (2) determine the financial ratios, including CAR, ROE, NPL, NIM, LDR, ROA, BOPO, and the primary reserve as predictor variables of financial distress in banking sector which is listing on the BEI. The population of this study were 38 banks which is listed on the BEI until December 31th, 2014.  Number of samples were 30 banks by purposive sampling technique. The analysis tool of study used Logit regression because of dependent variable was dummy variable and the independent variables were a combination of metric and non-metric. The results showed (1) banks were listed on the BEI has good performance (financial difficulties at low levels), the analysis result of financial distress by using multiple predictor variables, such as CAR, ROE, NPL, NIM, LDR, BOPO and reserves' primary GWM has good average value where is level of accuracy (97.2) in classifying the bank's financial difficulties; (2) The hypothesis testing showed a number of variables such as CAR, ROE, NIM, LDR, and BOPO were not significant as a predictor of financial distress in banking where listed on the BEI. However, NPL and reserves' primary GWM were significant variable as predictor of financial distress in banking where listed on the BEI.

Keywords: Reserves' primary GWM, Non-Performing Loan, Financial Distress
PENGARUH KUALITAS KEHIDUPAN KERJA DAN KEPUASAN KERJA TERHADAP KINERJA KARYAWAN MELALUI KOMITMEN ORGANISASI PADA BENGKEL RESMI SEPEDA MOTOR HONDA DI KECAMATAN SUMBERSARI KABUPATEN JEMBER
Authors: Mataram Adrian Suryo , Handriyono Handriyono
Published: February 2019

Abstract: Honda official workshop (AHASS) is a maintenance and repair service company for motorcycle products of Honda. To fulfill customers demand, the company management tries to improve employee performance in order to make their consumers satisfied with the offered service. The objectives of this research are to significantly examine the direct influence of quality of work life and work satisfaction on employee performance and the indirect influence of quality of work life and work satisfaction on employee performance through organizational commitment. This is an explanatory research with the sample consists of 50 (fifty) employees of Honda official workshops in Sumbersari District, Jember. Data were analyzed using path analysis with SPSS 19. The results show that quality of work life has a positive and significant effect on employee performance and organizational commitment; work satisfaction has a positive and significant effect on employee performance and organizational commitment; and organizational commitment has a positive and significant effect on employee performance.

Keywords:     Quality of Work Life, Work Satisfaction, Organizational Commitment, and Performance.
EFEKTIFITAS SISTEM INFORMASI PERENCANAAN DAN KEUANGAN AKRUAL (SIRKA) DALAM PROSES PERENCANAAN PEMBANGUNAN DAERAH KABUPATEN SITUBONDO
Authors: Puspitarini Diah Wahyu
Published: February 2019

Abstract: This study aims to analyze the effectiveness of the implementation of Accrual Finance and Planning Information System (SIRKA) on the regional development planning process of Situbondo Regency. The effectiveness of SIRKA is measured by Delone and McLane’s Information Systems Success Model (2003). The variables used to measure the success of SIRKA are system quality, information quality, service quality, user satisfaction, and net benefit. This is a quantitative research employing census sampling method with the population consists of all users of SIRKA planning. The primary data were sourced from the questionnaires distribution and analyzed using SmartPLS. The results of analysis prove that system quality and service quality affect SIRKA user satisfaction and net benefit. This means that the system quality measured by ease of use, reliability, response time, integrity, accessibility, and output quality supports the accomplishment of timely budget arrangement. SIRKA implementation also increases job performance. However, service quality has no effect on user satisfaction and net benefit.

Keywords:     System Quality, Information Quality, Service Quality, User Satisfaction, and Net Benefit.
PENGARUH KEPERCAYAAN PADA PIMPINAN, MUTASI DAN BUDAYA ORGANISASI TERHADAP MOTIVASI KERJA DAN KINERJA PEGAWAI DI BADAN PENDAPATAN DAERAH KABUPATEN JEMBER
Authors: Prasetyo Arief Yudho , Sularso Raden Andi , Handriyono Handriyono
Published: February 2019

The purpose of this study is to examine the influence of trust towards the leader, mutation, and organizational culture on work motivation and employee performance at Regional Revenue Board of Jember Regency. This is an explanatory research with the sample consists of 150 employees of Regional Revenue Board of Jember Regency. Data were analyzed using Structural Equation Modelling (SEM). Results show that trust towards the leader, mutation, and organizational culture have significant effects on work motivation; mutation and work motivation have significant effects on employee performance. However, trust towards the leader and organizational culture have no significant effects on the employee performance at Regional Revenue Board of Jember Regency.

Keywords: Trust towards the Leaders, Mutation, Organizational Culture, Work Motivation, and Performance
PERBAIKAN PELAPORAN KEUANGAN DESA MELALUI INOVASI SISTEM E-VILLAGE BUDGETING DI KABUPATEN BANYUWANGI
Authors: Puspita Dewi Ayu
Published: February 2019

Act No. 6 of 2014 allows village government to be more independent in managing its government system and resources, including its financial and asset management. Village fund allocation sourced from the local government budget of Banyuwangi Regency was increased from Rp 83 billion in 2016 to Rp 148.6 billion in 2017. Village fund from the central government was also increased to Rp 172 billion in 2017. To maintain local budget management, Banyuwangi Government initiated e-village budgeting, a financial application software as an integrated online village budgeting. This research uses descriptive qualitative approach. The units of analysis are Sembulung Village in Cluring District and Jajag Village in Gambiran District, Banyuwangi. Primary and secondary data were sourced from literature study, depth interview, and direct observation using purposive sampling technique. The results show that before implementing e-village budgeting, the village fund management was high in cost and inefficient. The financial statements will automatically be generated by the e-village budgeting system. This system makes financial management easier to perform and is more accountable. As a result, the village fund was used effectively to increase local people’s prosperity and quality of life.

Keywords: E-village Budgeting, Financial Reporting, Village Fund, Banyuwangi Regency
VARIABEL YANG MEMPENGARUHI KEPUASAN KERJA DAN TURNOVER INTENTION PEGAWAI DINAS PENDIDIKAN KABUPATEN PROBOLINGGO
Authors: Afrianti Nurohma , Titisari Purnamie , Handriyono Handriyono
Published: February 2019

This study aims to examine the effect of work stress, organizational climate, and employee engagement on work satisfaction and turnover intention of the staffs of Education Department of Probolinggo Regency. The research sample consists of 83 respondents. Data were analyzed using path analysis. Results of the research show that work stress, organizational climate, and employee engagement have direct effect and indirect effect through work satisfaction on turnover intention of the staffs of Education Department of Probolinggo Regency.

Keywords:     Work Stress, Organizational Climate, Employee Engagement, Work Satisfaction, and Turnover Intention.
PENGARUH MODAL INTELEKTUAL TERHADAP EARNING PER SHARE PADA INDUSTRI DASAR DAN KIMIA PERIODE 2012-2016
Authors: Aji R. Achmad Drajat , Hapsari Ajeng Andriani
Published: February 2019

Abstract: This research aims to examine the effect of intellectual capital onEarning Per Share (EPS) especially on the company operating in the basic andchemical industries. This study used purposive sampling method to collectsecondary data sourced from Indonesia Stock Exchange (IDX) in the period of2012-2016. The population was all companies operating in basic and chemicalindustries that listed in IDX for the period of 2012-2016, with the sample consistedof 58 companies. Data were analyzed by multiple linear regression. The resultsshowed that Value Added Capital Employed (VACA) had a significant effect onEPS, meaning that the proper use of the capital would increase company valuethat would finally increase its EPS. Value Added Human Capital (VAHU) also hada significant effect on EPS, meaning that the company’s good human resourcesmanagement would create added value to increase profit that would ultimatelyincrease EPS. However, Structural Capital Value Added (STVA) had no significanteffect on EPS, meaning that the company had not achieved competitive advantagedue to less optimal management of structural capital and EPS.Keywords: Intellectual Capital, VAHU, STVA, VACA, and EPS.Abstrak: Penelitian ini bertujuan untuk menguji pengaruh dari modal intelektualterhadap Earning Per Share (EPS). khususnya pada perusahaan yang bergerakdalam industri dasar dan kimia. Data sekunder bersumber dari Bursa EfekIndonesia (BEI) yang diambil berdasarkan teknik purposive sampling. Sampelpenelitian terdiri dari 58 perusahaan yang bergerak dalam industri dasar dan kimiayang terdaftar di BEI periode 2012-2016. Metode analisis data yang digunakanadalah regresi linear berganda. Hasil penelitian menunjukkan adanya pengaruhsignifikan Value Added Capital Employed (VACA) terhadap EPS yang berartibahwa penggunaan modal secara tepat akan menaikan nilai perusahaan untukmeningkatkan nilai keuntungan per lembar sahamnya. Value Added HumanCapital (VAHU) mempengaruhi EPS, yang mengindikasikan bahwa pengelolaansumber daya perusahaan yang baik berdampak pada terciptanya nilai tambah bagiperusahaan untuk meningkatkan laba yang nantinya mampu menambah jumlahEPS. Namun, variabel Structural Capital Value Added (STVA) tidak berpengaruhterhadap EPS yang mengindikasikan bahwa keunggulan bersaing perusahaanbelum dapat tercapai karena pengelolaan structural capital dan EPS yang belumoptimal.Kata Kunci: Modal Intelektual, VAHU, STVA, VACA, dan EPS.
PENGARUH KEPEMIMPINAN, MOTIVASI KERJA, BUDAYA ORGANISASI TERHADAP KINERJA PEGAWAI, DENGAN KOMITMEN ORGANISASI SEBAGAI VARIABEL INTERVENING
Authors: Rahayuningsih Sri
Published: February 2019

Abstract: The aim of this study is to analyze the influence of leadership, work motivation, and organizational culture on organizational commitment and employee performance in higher education institutions. Using the purposive sampling technique, the sample consisted of 136 respondents, who were employees of STEM Akamigas Cepu. Data were analyzed by multiple linear regression analysis, run by the SPSS program, and path analysis. The results showed that leadership, work motivation, and organizational culture had a significant direct effect on organizational commitment; leadership, work motivation, and organizational culture had a significant indirect effect on employee performance through organizational commitment as an intervening variable; and organizational commitment had a direct significant effect on employee performance.Keywords: Leadership, Work Motivation, Organizational Culture, Organizational Commitment, and Employee Performance.Abstrak: Tujuan dari penelitiaan adalah untuk menganalisis pengaruh kepemimpinan, motivasi kerja, dan budaya organisasi pada komitmen organisasi dan kinerja pegawai di institusi perguruan tinggi. Sampel penelitian terdiri dari 136 responden, yang merupakan pegawai STEM Akamigas Cepu, yang diambil dengan menggunakan teknik purposive sampling. Data dianalisis dengan analisis regresi linear berganda menggunakan program SPSS dan analisis jalur. Hasil penelitian menunjukkan bahwa kepemimpinan, motivasi kerja, dan budaya organisasi berpengaruh langsung signifikan pada komitmen organisasi; kepemimpinan, motivasi kerja, dan budaya organisasi berpengaruh tidak langsung signifikan pada kinerja pegawai melalui komitmen organisasi sebagai variabel interverning; dan komitmen organisasi berpengaruh langsung signifikan pada kinerja pegawai.Kata Kunci: Kepemimpinan, Motivasi Kerja, Budaya Organisasi, Komitmen Organisasi, dan Kinerja Pegawai.
Bupivacaine inhibits a small conductance calcium-activated potassium type 2 channel (SK2) in HEK 293 cells
Authors: Chen Hongfei , Xia Fangfang , Jin Zhousheng , He Yuting , Chen Zhengjie , Wang Shi , Chen Xixi , Fu Zhijian
Published: February 2019

Background: Bupivacaine blocks many ion channels in the heart muscle, which could cause severe cardiotoxicity. Small conductance calcium-activated potassium type 2 channels (SK2 channels) are widely distributed in the heart cells and are involved in relevant physiological functions. However, whether bupivacaine can inhibit SK2 channels is still unknown. This study investigated the effect of bupivacaine on SK2 channels.
Methods: The SK2 channel gene was transfected into human embryonic kidney 293 cells (HEK-293 cells) with Lipofectamine 2000. The whole-cell patch clamp technique was used to study the effect of bupivacaine on SK2 channels. The inhibitory effect of various concentrations of bupivacaine on SK2 currents exhibited a non-linear relation, and the half-maximal inhibitory concentration (IC50) value was determined.
Results: Bupivacaine inhibited the SK2 channels reversibly in a dose-dependent manner. The IC50 value of bupivacaine, ropivacaine and lidocaine on the SK2 current was 133.7, 189.3, and 885.8 µM, respectively. The degree of SK2 current inhibition by bupivacaine was dependent on the intracellular concentration of free calcium.
Conclusions: The results of this study suggested a new inhibitory effect of bupivacaine on SK2 channels. Future studies should be concerned with the effects of SK2 on bupivacaine cardiotoxicity.
Keywords: Bupivacaine, SK2 channel, inhibition, cardiotoxicity, HEK 293.
2º Workshop de Biomateriais "Tecnologia para Estudos e Controle de Biofilmes"
Authors: Duque Cristiane , Cintra Luciano Tavares Ângelo , Pessan Juliano Pelim
Published: February 2019

EditorialCaros(as) Leitores(as)Após o sucesso do 1º Workshop de Biomateriais “Aplicações e perspectivas em odontologia”, é com imenso prazer que o Programa de Pós-Graduação em Ciência Odontológica da Faculdade de Odontologia de Araçatuba – FOA/UNESP realiza o 2º Workshop de Biomateriais "Tecnologias para estudos e controle de biofilmes". O evento, realizado em comemoração aos 25 anos do Programa de Pós-Graduação em Ciência Odontológica da Faculdade de Odontologia de Araçatuba – FOA/UNESP, tem como objetivo promover a discussão sobre temas atuais nas linhas de pesquisa de Biomateriais aplicados à Odontologia e controle dos biofilmes. Para isso, contamos com a participação de pesquisadores da área com renome nacional e internacional: Profa. Dra. Marlise Klein (Faculdade de Odontologia de Araraquara – FOAr), Prof. Dr. Emerson Camargo (Universidade Federal de São Carlos – UFSCar), Prof. Dr. Nuno Mira (Universidade de Lisboa) e Prof. Dr. Mark Wainwright (Liverpool John Moores University). Para completar o evento, a apresentação de trabalhos científicos nas categorias Painel e Apresentação Oral, busca favorecer a divulgação das pesquisas na área de Biomateriais e tecnologias aplicadas ao controle dos biofilmes em Odontologia.Comissão Organizadora
PRÁTICAS TURÍSTICAS E ORDENAMENTO TERRITORIAL NA ORLA MARÍTIMA DE CORURIPE/AL
Authors: Sobreira Jucileide Da Silva , Vilar José Wellington Carvalho
Published: February 2019

O presente artigo tem por objetivo analisar as práticas turísticas e as iniciativas de ordenamento territorial desenvolvidas em duas praias do município de Coruripe, Pontal de Coruripe e Lagoa do Pau – Alagoas - Brasil. Compreende-se o uso a partir da apropriação dos recursos naturais para o desenvolvimento de práticas turísticas, e as práticas por meio das ações desenvolvidas envolvendo relações objetivas e subjetivas dos diferentes sujeitos com o espaço. Para coleta de dados empíricos utilizou-se entrevistas com atores sociais e questionários com sujeitos locais. Constatou-se que no Pontal de Coruripe e na Lagoa do Pau o uso e as práticas turísticas são desenvolvidos nas orlas marítimas desvinculados de ações de gerenciamento costeiro e os órgãos competentes não possuem os instrumentos necessários para a fiscalização destes ambientes.
Patent analysis: revealing the promising trends in the advancement of radio electronic systems using the reflection or reradiation of radio waves
Authors: Avdzeyko V. I. , Karnyshev V. I. , Meshcheryakov R. V. , Paskal E. S.
Published: February 2019

To identify the promising (breakthrough) trends in the advancement of radio electronic systems with the use of US Patents and Trademark Office database this paper examines the possibilities of patent analysis. This method is based on automatic time series generation of US patents for inventions and subsequent comparison of different technical solutions in specific International Patent Classification subgroups, and in their issuance dynamics for 2007-2017. In particular, the authors analyze several promising trends in the advancement of radio electronic systems using the reflection or secondary radiation of radio waves. The data obtained allow stating that the most promising are systems using the reflection of radio waves and systems adapted for specific applications. According to the authors, the most promising systems, which use the reflection of radio waves, are systems intended solely for measuring distance using transmission of continuous unmodulated waves, amplitude-, frequency- or phase-modulated waves. Radar or analogous systems specially adapted for terrain-avoidance were found to be the most promising among systems for specific applications.
Role of Organizational Citizenship Behaviour on Internal Brand Identification
Authors: Kiranmayi G.Radha , Jyothi P.
Published: February 2019

The study Role of Organizational Citizenship Behavior on Employee Brand Identification was conducted to analyze the influence of OCB on Internal or employee brand identification. A survey was conducted administering a questionnaire on a sample of 265 employees of select IT companies in Hyderabad and Bengaluru. The survey has stated certain key findings. The study identified that OCB has a significant impact on employee brand identification and altruism and courtesy play a significant role in this relationship. The study also found that any change in gender, age, educational qualification and location of the workplace has no impact on brand identification while designation or level at which employee is placed influences his brand identification. Therefore, it was implied that, both branding and HR personnel of the organizations to work in harmony to create greater sense of OCB and thus, Brand Identification that can in turn create competitive advantage. Further, the limitations of the study and scope for further research has been discussed.
Изменение структуры и свойств приповерхностного слоя Si, имплантированного Zn, в зависимости от флюенса облучения ионами -=SUP=-132-=/SUP=-Xe-=SUP=-26+-=/SUP=- с энергией 167 МэВ
Authors: Привезенцев В.В. , Куликаускас В.С. , Скуратов В.А. , Зилова О.С. , Бурмистров А.А. , Пресняков М.Ю. , Горячев А.В.
Published: February 2019

AbstractSingle-crystal n -Si(100) wafers are implanted with ^64Zn^+ ions with an energy of 50 keV and dose of 5 × 10^16 cm^–2. Then the samples are irradiated with ^132Xe^26+ ions with an energy of 167 MeV in the range of fluences from 1 × 10^12 to 5 × 10^14 cm^–2. The surface and cross section of the samples are visualized by scanning electron microscopy and transmission electron microscopy. The distribution of implanted Zn atoms is studied by time-of-flight secondary-ion mass spectrometry. After irradiation with Xe, surface pores and clusters consisting of a Zn–ZnO mixture are observed at the sample surface. In the amorphized subsurface Si layer, zinc and zinc-oxide phases are detected. After irradiation with Xe with a fluence of 5 × 10^14 cm^–2, no zinc or zinc-oxide clusters are detected in the samples by the methods used in the study.
Электронный квантовый транспорт в псевдоморфных и метаморфных квантовых ямах на основе In-=SUB=-0.2-=/SUB=-Ga-=SUB=-0.8-=/SUB=-As
Authors: Виниченко А.Н. , Сафонов Д.А. , Каргин Н.И. , Васильевский И.С.
Published: February 2019

AbstractMetamorphic high-electron-mobility transistor (HEMT) structures based on deep In_0.2Ga_0.8As/In_0.2Al_0.8As quantum wells (0.7 eV for Γ electrons) with different metamorphic buffer designs are implemented and investigated for the first time. The electronic properties of metamorphic and pseudomorphic HEMT structures with the same doping are compared. It is found that, over a temperature range of 4–300 K, both the electron mobility and concentration in the HEMT structure with a linear metamorphic buffer are higher than those in the pseudomorphic HEMT structure due to an increase in the depth of the quantum well. Low-temperature magnetotransport measurements demonstrate that the quantum momentum-relaxation time decreases considerably in metamorphic HEMT structures because of enhanced small-angle scattering resulting from structural defects and inhomogeneities, while the dominant scattering mechanism in structures of both types is still due to remote ionized impurities.
Оптические свойства нанокристаллов CdS, легированных цинком и медью
Authors: Ницук Ю.А. , Киосе М.И. , Ваксман Ю.Ф. , Смынтына В.А. , Яцунский И.Р.
Published: February 2019

AbstractCadmium-sulfide nanocrystals are produced by the colloidal method. Doping with zinc and copper is conducted during nanocrystal growth. The optical absorption and photoluminescence spectra are studied. The maximum concentration of the optically active copper impurity is determined from a shift of the fundamental absorption edge to lower energies. It is shown that the long-wavelength luminescence of CdS and CdS:Zn nanocrystals is defined by optical transitions at donor–acceptor pairs. In CdS:Cu nanocrystals, optical absorption and photoluminescence in the visible spectral region are defined by recombination transitions involving the ground state of $${\text{Cu}}_{{{\text{Zn}}}}^{{2 + }}$$ ions. The infrared absorption and photoluminescence of CdS:Cu quantum dots are defined by intracenter transitions within $${\text{Cu}}_{{{\text{Zn}}}}^{{2 + }}$$ ions.
Численное моделирование субнаносекундного лавинного переключения кремниевых n-=SUP=-+-=/SUP=--n-n-=SUP=-+-=/SUP=--структур
Authors: Подольская Н.И. , Родин П.Б.
Published: February 2019

AbstractThe simulations of recently discovered effect of subnanosecond avalanche switching of Si n ^+− n − n ^+-structures have been performed. The electric field in n ^+− n − n ^+-structure is shown to remain quasi-uniform along the current flow direction during the voltage rise stage and it reaches the effective threshold of impact ionization of ~200 kV/cm in the whole n-base. Comparing simulation results with experiments we argue that the field distribution is as well uniform in the transverse direction. Hense, the ultrafast avalanche transient develops quasi-uniformly in the whole n-base volume. The switching time is about ~150 ps. We compare numerical results obtained for various impact ionization models and estimate parameters of the initial voltage pulse that are required for ultrafast avalanche switching of n ^+− n − n ^+-structures.
Моделирование переходных процессов в полупроводниковых приборах на основе 4H-SiC (учет неполной ионизации легирующих примесей в модуле ATLAS программного пакета SILVACO TCAD)
Authors: Иванов П.А. , Потапов А.С. , Самсонова Т.П.
Published: February 2019

AbstractTransient process in a resistor–capacitor (RC) circuit with a reverse-biased 4 H -SiC p – n diode as the capacitive element is simulated. Simulation is performed with the ATLAS software module from the SILVACO TCAD system for technology computer-aided design (TCAD). An alternative way, to that in ATLAS, to set the parameters of doping impurities partly ionized in 4 H -SiC at room temperature is suggested. (The INCOMPLETE physical model available in the ATLAS module, which describes the incomplete ionization of doping impurities in semiconductors, is unsuitable for simulating the dynamic characteristics of devices.) The simulation results are discussed in relation to previously obtained experimental results.
Кристаллизация плeнок аморфного германия и многослойных структур a-Ge/a-Si под действием наносекундного лазерного излучения
Authors: Володин В.А. , Кривякин Г.К. , Ивлев Г.Д. , Прокопьев С.Л. , Гусакова С.В. , Попов А.А.
Published: February 2019

AbstractThe processes of the crystallization of amorphous germanium films and multilayer germanium/silicon structures upon exposure to nanosecond (70 ns) ruby laser radiation (λ = 694 nm) are studied. The samples are grown on silicon and glassy substrates by plasma-enhanced chemical vapor deposition. Pulsed laser annealing of the samples is conducted in the range of pulse energy densities E _ p from 0.07 to 0.8 J cm^–2. The structure of the films after annealing is determined by analyzing the scanning electron microscopy data and Raman spectra. It is established that, after annealing, the films are completely crystallized and, in this case, contain regions of coarse crystalline grains (>100 nm), whose fraction increases, as E _ p is increased, and reaches 40% of the area. From analysis of the position of the Raman peaks, it is conceived that the crystalline grains, whose dimensions exceed 100 nm, either contain structural defects or stretching strains. The correlation length of optical vibrations is determined from the phonon confinement model and found to increase from 5 to 8 nm, as E _ p is increased. Pulsed laser annealing of multilayer Ge(10 nm)/Si(5 nm) structures induces partial intermixing of the layers with the formation of Ge–Si alloys.
Comparative Studies of AlGaAs/InGaAs Enhancement/Depletion-Mode High Electron Mobility Transistors with Virtual Channel Layers by Hybrid Gate Recesses Approaches -=SUP=-*-=/SUP=-
Authors: Tsai Jung-Hui , Lin Pao-Sheng , Chen Yu-Chi , Liou Syuan-Hao , Niu Jing-Shiuan
Published: February 2019

AbstractUnlike the conventional GaAs- and InP-based enhancement/depletion-mode ( E / D -mode) transistors, the improved gate characteristics of the AlGaAs/InGaAs E -mode high electron mobility transistors (HEMTs) by way of hybrid gate recesses to remove the n -AlAs/ i -GaAs/ n -AlGaAs virtual channel layers upon 2DEG channels are demonstrated. As compared to the D -mode device (sample A), the gate reverse currents are effectively reduced by 45 and 102 times for the E -mode devices with additional gate recess time of 24 s (sample B) and 30 s (sample C) to remove part of the virtual channel layers, respectively. Under gate forward bias, the hybrid gate recesses also enable the gate turn-on voltages to increase. Furthermore, the threshold voltages of –1.25, 0.09, and 0.22 V are observed in the samples A, B, and C, respectively. The maximum transconductances of 187.3, 209.2, and 243.4 mS/mm and saturation current density of 482.8, 410.6, and 347.4 mA/mm are obtained in the samples A, B, and C, respectively.
Магнитные свойства и природа магнитного состояния интеркалированных соединений Cr-=SUB=-x-=/SUB=-MoSe-=SUB=-2-=/SUB=-
Authors: Плещев В.Г. , Селезнева Н.В.
Published: February 2019

AbstractThis is a pioneering work on the synthesis of molybdenum diselenides intercalated by chromium atoms. Their magnetic properties are studied at various intercalant concentrations, temperatures, and magnetic fields. The temperature dependences of effective magnetic moments and positive paramagnetic Curie temperatures in the paramagnetic region evidence the feasible ferromagnetic interactions between intercalated atoms. The existence of low-temperature ferromagnetic state in Cr_ x МоSe_2 is confirmed by hysteresis phenomena in temperature and field dependences of magnetization and magnetic susceptibility.
Новая магнитная нецентральная примесь --- кобальт в титанате стронция
Authors: Случинская И.А. , Лебедев А.И.
Published: February 2019

AbstractThe local structure and charge state of the cobalt impurity in SrTiO_3 is studied by X-ray absorption fine structure (XAFS) spectroscopy. The synthesis conditions, under which cobalt predominantly (up to 76%) substitutes the atoms at the A site of the perovskite structure, is found for SrTiO_3(Co) samples. By varying the synthesis conditions, it is possible to appreciably change the ratio between the concentrations of cobalt atoms incorporated into the A and B sites. It is established that the charge state of cobalt is +2 at the A site and +3 at the B site. It is revealed that the Co impurity at the A site is off-center, and its deviation from the lattice site is 1.0 Å. First-principles calculations show that the isolated Co^3+ ion at the B site is diamagnetic, whereas the Co^2+ ion at the A site is in a high-spin state ( S = 3/2).
Оптические свойства многослойных пленочных структур BaTiO-=SUB=-3-=/SUB=-/SiO-=SUB=-2-=/SUB=-, сформированных золь--гель-методом
Authors: Гапоненко Н.В. , Холов П.А. , Сукалин К.С. , Райченок Т.Ф. , Тихомиров С.А. , Subasri R. , Soma Raju K.R.C. , Мудрый А.В.
Published: February 2019

AbstractMulti-layer film structures BaTiO_3/SiO_2 with a thickness of ~1 μm containing up to 14 pairs of layers were synthesized by the sol–gel method with sequential heat treatment. It is shown that the synthesized structures are X-ray amorphous. The formation of bands in the transmission and reflection spectra caused by interference effects is demonstrated. A more regular structure exhibits a photon band gap (opacity band) in the visible range with main minimum at 636 nm and corresponding maximum in the reflection spectra. Dispersion characteristics of barium titanate films with different concentrations of initial sols were studied and an increase in the refractive index with an increase in the concentration of sol was demonstrated. For a sol with a concentration of 60 mg/mL, the refractive index in the spectral range of 390–1600 nm is 1.88–1.81. The prospects of sol–gel technology for the formation of BaTiO_3/SiO_2 structures for nanophotonics and solar radiation converters are discussed.
Структура и электрофизические свойства многостенных углеродных нанотрубок, подвергнутых облучению ионами аргона
Authors: Князев Е.В. , Болотов В.В. , Ивлев К.Е. , Поворознюк С.Н. , Кан В.Е. , Соколов Д.В.
Published: February 2019

AbstractThe morphology, structure, and electrophysical characteristics of multiwall carbon nanotubes (MWCNTs), as affected by defects induced by ion bombardment, are studied using Raman spectroscopy and scanning and transmission electron microscopies. Annealing in an inert atmosphere results in partial recovery of the nanotube structure: the nanotube walls contain regions of recovered graphene structure and regions plagued with extended defects that result in corrugation of graphene layers comprising the walls of MWCNTs. These structural alterations result in a marked decrease in conductivity of the processed MWCNTs.
Влияние кислорода на электропроводящие свойства тонких пленок полимерного диэлектрика
Authors: Юсупов А.Р. , Лачинов А.Н. , Калимуллина Л.Р. , Гадиев Р.М. , Никитина Д.В.
Published: February 2019

AbstractThe influence of the atmosphere on the electrical conductivity of polydiphenylenephthalide (PDP) films included in the ITO–PDP–Sb sandwich structure is discussed. On the basis of electrophysical measurements and quantum-chemical simulation, a conclusion is drawn that the main contribution to the electrical conductivity of the PDP films comes from oxygen.
Двухстадийная конверсия кремния в наноструктурированный углерод методом согласованного замещения атомов
Authors: Кукушкин С.А. , Осипов А.В. , Феоктистов Н.А.
Published: February 2019

Abstract—A fundamentally new method of obtaining epitaxial layers of nanostructured carbon on silicon substrates has been considered. Epitaxial growth in the case of seemingly incompatible lattices has been achieved by converting the crystal by the method of coordinated substitution of atoms, in which the overall structure of the bonds between the atoms is not destroyed. In the first stage of conversion, the first half of the silicon atoms are concertedly replaced by the carbon atoms due to the reaction of silicon with CO gas, during which an epitaxial layer of SiC–3C cubic silicon carbide is obtained. In the second stage of conversion, the remaining half of silicon atoms is concertedly replaced by carbon atoms due to the reaction of SiC with CF_4 gas. Carbon structures with different properties from nanodiamonds to nanotubes and carbon nanoonions have been obtained depending on the orientation of the silicon surface, pressure of the reagent gas, and temperature and growth time. A key feature of this method is that the substrate orders the resulting structures using the original chemical bonds between the atoms in silicon. The term “concertedly” means that new chemical bonds are formed simultaneously and concertedly with the destruction of old bonds. Data on electron diffraction and analysis of Raman and ellipsometric spectra of the obtained samples of nanostructured carbon on silicon substrates have been presented. Two competing growth mechanisms have been discussed.
Диэлектрические параметры упруго напряженных, гетероэпитаксиальных пленок SrTiO-=SUB=-3-=/SUB=-
Authors: Бойков Ю.А. , Данилов В.А.
Published: February 2019

AbstractThree-layer epitaxial SrRuO_3/SrTiO_3/SrRuO_3 heterostructures with the 900-nm-thick intermediate layer of strontium titanate have been grown on single-crystal (001)La_0.29Sr_0.71Al_0.65Ta_0.35O_3 substrates by the laser evaporation method. Plane-parallel film capacitors have been formed on the basis of the grown heterostructures using photolithography and ion etching. Temperature dependences of the dissipation factor have been measured for these capacitors at different bias voltages applied to strontium ruthenate electrodes. Temperature dependences of the permittivity of the intermediate SrTiO_3 layer in the formed capacitor structures are visualized with compensation of the internal electric field and without it. The reasons for the sharp increase in the dielectric loss in the formed film capacitors at temperatures below 50 K are analyzed.
К теории электронных состояний эпитаксиального бислоя графена
Authors: Абдуллаев Г.О. , Алисултанов З.З.
Published: February 2019

AbstractThe energy spectrum of an epitaxial graphene bilayer is investigated. The most general case of spontaneous breaking of the P symmetry within and between the layers is considered. The influence of the gate voltage on the energy spectrum is studied. It is shown that a general profile of this influence substantially depends on the ratio between bandgaps corresponding to different layers. At a certain value of the Coulomb potential caused by the transition of a charge from the substrate, the bandgap collapses. These studies are carried out for two types of layer packing in the bilayer, namely, the AB and AA packings.
Структура течения и изменение тяги при вдуве струи газа в сверхзвуковую часть сопла
Authors: Волков К.Н. , Емельянов В.Н. , Яковчук М.С.
Published: February 2019

AbstractThe numerical simulation of gas-dynamic processes accompanying the transverse injection of a gas jet into the supersonic part of a nozzle is considered in the context of creating steering forces in rocket engines. Numerical calculations are conducted based on various turbulence models at different mass flow rates of the injected gas. The calculation results obtained for the non-viscous, laminar, and turbulent formulation of the problem are compared with each other and with the physical experiment data. The formation of a shock wave and vortex flow pattern is discussed. Conclusions about the effect of problem input parameters on the thrust gain coefficient are made.
Исследование и оптимизация характеристик генерации сверхмощного виртода
Authors: Бадарин А.А. , Куркин С.А. , Фролов Н.С. , Рак А.О. , Храмов А.Е.
Published: February 2019

AbstractWe report on the results of the 3D numerical simulation of perspective design of an oscillator based on an external-feedback virtual cathode (virtode), as well as optimization of characteristics of its generation. We have analyzed the effect of beam parameters on the virtode output characteristics. In particular, we have obtained the dependence of the efficiency on the feeding voltage and on the current being injected. We have studied the effect of beam velocity premodulation and electron velocity spread on virtode generation characteristics. It has been established that the introduction of premodulation sharply increases the generation efficiency up to 13% for optimal parameters. The possibility of stable generation in the virtode at relatively large spread in electron velocities has been demonstrated.
Барьерный разряд в гелии при средних давлениях. Спектроскопия послесвечения
Authors: Иванов В.А.
Published: February 2019

AbstractThe decaying plasma that is produced by the dielectric barrier discharge (DBD) in helium across a cylindrical tube at a pressure of helium 1–40 Тorr has been spectroscopically investigated. The radical difference between the nature of the barrier discharge afterglow and longitudinal pulse discharge afterglow at the same plasma electron density has been demonstrated. It has been shown that this effect is due to the abnormally low density of metastable He(2^1 S _0, ^3 S _1) atoms in the plasma that is produced by DBD. In such an experiment, it is possible to observe a purely recombination afterglow that is free of processes involving metastable atoms, which is fundamentally important for solving the problem of helium afterglow.
Оптические свойства монокристаллического германия в терагерцовой области спектра
Authors: Каплунов И.А. , Колесников А.И. , Кропотов Г.И. , Рогалин В.Е.
Published: February 2019

AbstractThe transmission of intrinsic, antimony-doped, and gallium-doped Ge single crystals in the THz spectral range have been experimentally investigated. It is shown that the attenuation coefficient of intrinsic germanium in the range of 160‒220 μm is at a level of ~0.5 cm^‒1, a value comparable with that for silicon. The free-carrier absorption cross sections of silicon and germanium are significantly different, which may be caused by the difference in the mechanisms of carrier–phonon interaction in these materials.
Спектры РКР и механизмы тушения флуоресценции beta-нитро-тетрафенилпорфирина
Authors: Ивашин Н.В. , Терехов С.Н.
Published: February 2019

AbstractThe study of the excited states and photophysical characteristics of β-nitro-tetraphenylporphyrin (TPP–NO_2) has been carried out using resonance Raman scattering (RRS) spectroscopy and methods of the density functional theory. The appearance of new lines, the intensity of which depends on the composition of the matrix and excitation wavelength, has been found in the TPP–NO_2 RRS spectra in the low-temperature matrix. The calculation of the vibrational states of TPP–NO_2 allowed the linking of the additional lines with the asymmetric vibrations of the nitro group and valence C–C vibrations of the phenyl ring (Ph1) that was nearest to it. The activation of these modes is related to the specific features of the TPP–NO_2 geometry in the charge transfer (CT) state from Ph1 to the porphyrin macrocycle. It has been concluded on the basis of the analysis of the data of the study of the RRS spectra and the results of calculations that use the СAM-B3LYP and wB97XD functionals that the CT states do not play a significant role in the TPP–NO_2 fluorescence quenching, as previously assumed. The fluorescence quenching owes to strengthening channels of internal and inter-conversion by reducing the energy gaps Δ E ( S _1 – T _1) and Δ E ( S _1 – S _0) as well as increasing the spin-orbit coupling between the S _1 and T _1 states. It has been shown that TPP–NO_2 is characterized by conformational heterogeneity both in the ground and in the excited states, which explains the absence of the monoexponentiality of fluorescence decay kinetics.
Дисперсия поверхностных плазмонов в структурах с проводящей пленкой
Authors: Давидович М.В.
Published: February 2019

AbstractThe dispersion equations, the group velocity, the slowdown, and the conditions for forward and backward slow and fast plasmons propagating along thin metal films, as well as along graphene sheets, including those located on a dielectric layer and in a dielectric medium, are investigated. Nondissipative and dissipative surface plasmons are considered. Backward nondissipative symmetric plasmons do not occur in a dissipative silver film. It is shown that the anomalous negative dispersion of a dissipative plasmon does not necessarily mean that this plasmon is backward. For a backward dissipative plasmon, the input impedance of the structure from the side of vacuum should be capacitive, while the plasmon itself should be incoming. Symmetric and nonsymmetric structures with these properties are considered.
Неинвазивное измерение биоэлектрических потенциалов растений
Authors: Кулешова Т.Э. , Бушлякова А.В. , Галль Н.Р.
Published: February 2019

AbstractA system for the noninvasive measurement of bioelectric potentials in the soil–plant system, which is based on a new—and harmless to plants—method ensuring the surface contact of the root system with electrodes, is developed and tested with the use of the Chlorophytum comosum perennial grassy plant. It is shown that the irrigation of the plant from the top after exposure to water-scarce conditions causes a jump in the bioelectric potential at the level of 200–250 mV for about 300 s with subsequent reaching of a plateau corresponding to the physiological state of the plant. At the same time, the diffusion of water from below leads to a smooth change in the bioelectric potential upon reaching the same level. It is shown that invasive insertion of an electrode leads to nonmonotonic and descending time dependences of the bioelectric potential, which are probably a response of the living system to damage.
Пороговые режимы динамического деформирования алюминиевого сплава 1565
Authors: Диваков А.К. , Жигачева Н.И. , Коновалов Г.В. , Мещеряков Ю.И. , Осокин Е.П.
Published: February 2019

AbstractTo identify threshold structuring regimes, two series of tests of 1565 aluminum alloy were conducted in the speed range of 250–750 m/s: impact tests under uniaxial deformation and penetration of impactors. Comparison of the results of both series of tests enables the separation of the drag in the interaction of an elongated impactor with a target from the friction resistance with its side part. The structuring scale changes twice on the lateral surface of the cavity—at speeds of 400 and 623.3 m/s—and the second structuring threshold almost coincides with the same threshold under loading under uniaxial deformation.
Топография поверхности и оптические характеристики тонких пленок AlN на подложке GaAs (100), полученных методом реактивного ионно-плазменного распыления
Authors: Фомин Е.В. , Бондарев А.Д. , Rumyantseva A.I. , Maurer T. , Пихтин Н.А. , Тарасов С.А.
Published: February 2019

AbstractA study of the surface topography and optical characteristics of thin AlN films used as passivating and antireflection coatings deposited on n -GaAs (100) substrates by reactive ion-plasma sputtering is reported. It was found that the process conditions affect the structure and the optical characteristics of the films, which makes it possible to obtain coatings with prescribed parameters. An analysis of the results furnished by ellipsometry and atomic-force microscopy of the surface shows that the refractive index of the films is correlated with the surface structure.
Исследование влияния параметров импульсного разряда на порождаемые в сверхзвуковом пограничном слое локализованные возмущения
Authors: Яцких А.А. , Ермолаев Ю.Г. , Косинов А.Д. , Семенов Н.В.
Published: February 2019

AbstractThe results of experimental studies of the effect of the duration and current of a pulsed glow discharge on the generation of localized disturbances in the supersonic boundary layer of a flat plate at Mach numbers of the oncoming flow M = 3 and 4 have been presented. Flow pulsation measurements were performed by a hot-wire anemometer. It has been found that an increase in the duration of the impulse function leads to an increase in the amplitude and time scales of the perturbations that are generated in the boundary layer. An increase in the current of the pulse discharge leads to an increase in the amplitude of the generated pulsations. The propagation velocities in the boundary layer of localized perturbations at different Mach numbers of the oncoming flow have been estimated.
Экспериментальное исследование пленочного кипения недогретой воды методом градиентной теплометрии
Authors: Сапожников С.З. , Митяков В.Ю. , Митяков А.В. , Субботина В.В.
Published: February 2019

AbstractThe process of subcooled water boiling is qualitatively described based on data obtained using gradient heat flux measurement. The proposed method was used for the first time for measuring the heat flux per unit area during film boiling that takes place on the endface of a cylinder submerged in subcooled water. Based on these results, the time distribution of the heat flux per unit area are constructed and the relationship between the heat flux per unit area and heat-transfer coefficient is estimated.
Катодолюминесценция слоев TiO-=SUB=-2-=/SUB=-, полученных методом молекулярного наслаивания
Authors: Барабан А.П. , Селиванов А.А. , Дмитриев В.А. , Дрозд А.В. , Дрозд В.Е.
Published: February 2019

AbstractUse of the method of local cathodoluminescence in Si–TiO_2 and Si–SiO_2–TiO_2 structures helps to elucidate the nature of centers influencing the operation of memristors. These measurements showed that electroforming leads to the appearance of luminescence in a 250–400 nm wavelength range in the external part of TiO_2 layer characterized by high concentration of defects. This observation leads to a conclusion that a sharp interface is formed between dielectric layers of the structure, provides estimation of the absorption coefficient of TiO_2 layer, and allows its bandgap width (~3.3 eV) to be evaluated for the oxide layers formed by the given technology.