bluuebunny/crossref_metadata_2025 huggingface dataset:
On the taxonomy of Afrotropical Coleophoridae (III). New or little known species from Central and Oriental Africa (Lepidoptera, Coleophoridae)
Authors: BALDIZZONE GIORGIO , VAN DER WOLF HUGO W.
Published: April 2020

This work presents a review of the Coleophoridae of Central and Eastern Africa. A lectotype is designated for Coleophora psychropa Meyrick, 1920, and the male genitalia of C. crossanthes Meyrick, 1938, are illustrated for the first time. Coleophora sabaea Baldizzone, 2007, previously known only from Yemen, is added to the African fauna. Nine new species of Coleophora Hübner, 1822 are described: C. schouteni sp. nov., C. giustii, sp. nov., C. centrafricana sp. nov., C. riftella sp. nov., C. camerunensis sp. nov., C. ensifera sp. nov., C. gilgilensis sp. nov., C. nyanzaensis sp. nov., C. silvestris sp. nov.
Molecular Memory Based on Nanowire–Molecular Wire Heterostructures
Authors: Li Chao , Lei Bo , Fan Wendy , Zhang Daihua , Meyyappan M. , Zhou Chongwu
Published: April 2020

This article reviews the recent research of molecular memory based on self-assembled nanowire–molecular wire heterostructures. These devices exploit a novel concept of using redox-active molecules as charge storage flash nodes for nanowire transistors, and thus boast many advantages
such as room-temperature processing and nanoscale device area. Various key elements of this technology will be reviewed, including the synthesis of the nanowires and molecular wires, and fabrication and characterization of the molecular memory devices. In particular, multilevel memory has
been demonstrated using In2O3 nanowires with self-assembled Fe-bis(terpyridine) molecules, which serve to multiple the charge storage density without increasing the device size. Furthermore, in-depth studies on memory devices made with different molecules or with different
functionalization techniques will be reviewed and analyzed. These devices represent a conceptual breakthrough in molecular memory and may work as building blocks for future beyond-CMOS nanoelectronic circuits.
Silicon Nanocrystal Memories: A Status Update
Authors: Compagnoni Christian Monzio , Gusmeroli Riccardo , Ielmini Daniele , Spinelli Alessandro S. , Lacaita Andrea L.
Published: April 2020

In the last decade, the silicon nanocrystal memory technology has received widespread interests from the scientific community working in the field of non-volatile solid-state memories, considering it as a feasible candidate for the post-Flash scenario. The immunity to stress-induced
leakage current and the reduction of parasitic floating-gate capacitive couplings make the nanocrystal technology very attractive, especially when considering the CMOS compatible process flow. However, many open issues still exist for its development, first of all concerning its scaling perspectives.
Starting from the discussion of the basic principles of nanocrystal storage, in this paper we review the major benefits and the open challenges of the silicon nanocrystal memory technology.
Self-Organized Magnetic Nanowire Arrays Based on Alumina and Titania Templates
Authors: Prida V. M. , Pirota K. R. , Navas D. , Asenjo A. , Hernández-Vélez M. , Vázquez M.
Published: April 2020

Densely packed arrays of magnetic nanowires have been synthesized by electrodeposition filling of nanopores in alumina and titania membranes formed by self-assembling during anodization process. Emphasis is made on the control of the production parameters leading to ordering degree
and lattice parameter of the array as well as nanowires diameter and length. Structural, morphological and magnetic properties exhibited by nanowire arrays have been studied for several nanowire compositions, different ordering degree and for different nanowire aspect ratios. The magnetic
behaviour of nanowires array is governed by the balance between different energy contributions: shape anisotropy of individual nanowires, the magnetostatic interaction of dipolar origin among nanowires, and magnetocrystalline and magnetoelastic anisotropies induced by the pattern templates.
These novel nanocomposites, based on ferromagnetic nanowires embedded in anodic nanoporous templates, are becoming promising candidates for technological applications such as functionalised arrays for magnetic sensing, ultrahigh density magnetic storage media or spin-based electronic devices.
Nanolubrication: Patterned Lubricating Films Using Ultraviolet (UV) Irradiation on Hard Disks
Authors: Zhang J. , Hsu S. M. , Liew Y. F.
Published: April 2020

Nanolubrication is emerging to be the key technical barrier in many devices. One of the key attributes for successful device lubrication is self-sustainability using only several molecular layers. For single molecular species lubrication, one desires bonding strength and molecular mobility
to repair the contact by diffusing back to the contact. One way to achieve this is the use of mask to shield the surface with a patterned surface texture, put a monolayer on the surface and induce bonding. Then re-deposit mobile molecules on the surface to bring the thickness back to the desired
thickness. This paper describes the use of long wavelength UVirradiation (320–390 nm) to induce bonding of a perfluoropolyether (PFPE) on CNx disks for magnetic hard disk application. This allows the use of irradiation to control the degree of bonding on CNx
coatings. The effect of induced bonding based on this wavelength was studied by comparing 100% mobile PFPE, 100% bonded PFPE, and a mixture of mobile and bonded PFPE in a series of laboratory tests. Using a lateral force microscope, a diamond-tipped atomic force microscope, and a ball-on-inclined
plane apparatus, the friction and wear characteristics of these three cases were obtained. Results suggested that the mixed PFPE has the highest shear rupture strength.
Two-Dimensional Ultrahigh-Density X-ray Optical Memory
Authors: Bezirganyan Hakob P. , Bezirganyan Siranush E. , Bezirganyan Hayk H. , Bezirganyan Petros H.
Published: April 2020

Most important aspect of nanotechnology applications in the information ultrahigh storage is the miniaturization of data carrier elements of the storage media with emphasis on the long-term stability. Proposed two-dimensional ultrahigh-density X-ray optical memory, named X-ROM,
with long-term stability is an information carrier basically destined for digital data archiving. X-ROM is a semiconductor wafer, in which the high-reflectivity nanosized X-ray mirrors are embedded. Data are encoded due to certain positions of the mirrors. Ultrahigh-density data recording
procedure can e.g., be performed via mask-less zone-plate-array lithography (ZPAL), spatial-phase-locked electron-beam lithography (SPLEBL), or focused ion-beam lithography (FIB). X-ROM manufactured by nanolithography technique is a write-once memory useful for terabit-scale memory applications,
if the surface area of the smallest recording pits is less than 100 nm2. In this case the X-ROM surface-storage capacity of a square centimetre becomes by two orders of magnitude higher than the volumetric data density really achieved for three-dimensional optical data storage medium.
Digital data read-out procedure from proposed X-ROM can e.g., be performed via glancing-angle incident X-ray micro beam (GIX) using the well-developed X-ray reflectometry technique. In presented theoretical paper the crystal-analyser operating like an image magnifier is added to the set-up
of X-ROM data handling system for the purpose analogous to case of application the higher numerical aperture objective in optical data read-out system. We also propose the set-up of the X-ROM read-out system based on more the one incident X-ray micro beam. Presented scheme of two-beam data
handling system, which operates on two mutually perpendicular well-collimated monochromatic incident X-ray micro beams, essentially increases the reliability of the digital information read-out procedure. According the graphs of characteristic functions presented in paper, one may choose optimally
the incident radiation wavelength, as well as the angle of incidence of X-ray micro beams, appropriate for proposed digital data read-out procedure.
Experimental Study of Single-Electron Phenomena in Silicon Nanocrystal Memories
Authors: Pace C. , Crupi F. , Corso D. , Lombardo S.
Published: April 2020

In this paper we present experimental evidence for single-electron phenomena in solid-state memories based on silicon nanocrystals as storage elements. The stepwise evolution of the channel current of a written memory cell biased in the subthreshold regime is monitored by means of a
purposely designed low noise acquisition system with a bandwidth of 1 kHz. Each channel current step-up is ascribed to a single-electron emission from the silicon nanocrystal to the silicon substrate and each current step-down is ascribed to a single-electron capture from the silicon substrate
into the silicon nanocrystal. The effect of the measurement system bandwidth on the detection of single-electron events is discussed and a procedure for extracting the threshold voltage shift associated to these events is proposed. It is shown that single-electron charging and discharging
events in a memory cell with an area of 4.5 × 10−10 cm2 can cause threshold voltage shift at room-temperature of the order of several millivolts. Qualitative explanation for the observed threshold voltage shift distribution is given.
Near-field sound source localization using principal component analysis–multi-output support vector regression
Authors: Wang Lanmei , Wang Yao , Wang Guibao , Jia Jianke
Published: April 2020

In this article, principal component analysis method, which is applied to image compression and feature extraction, is introduced into the dimension reduction of input characteristic variable of support vector regression, and a method of joint estimation of near-field angle and range based on principal component analysis dimension reduction is proposed. Signal-to-noise ratio and calculation amount are the decisive factors affecting the performance of the algorithm. Principal component analysis is used to fuse the main characteristics of training data and discard redundant information, the signal-to-noise ratio is improved, and the calculation amount is reduced accordingly. Similarly, support vector regression is used to model the signal, and the upper triangular elements of the signal covariance matrix are usually used as input features. Since the covariance matrix has more upper triangular elements, training it as a feature input will affect the training speed to some extent. Principal component analysis is used to reduce the dimensionality of the upper triangular element of the covariance matrix of the known signal, and it is used as the input feature of the multi-output support vector regression machine to construct the near-field parameter estimation model, and the parameter estimation of unknown signal is herein obtained. Simulation results show that this method has high estimation accuracy and training speed, and has strong adaptability at low signal-to-noise ratio, and the performance is better than that of the back-propagation neural network algorithm and the two-step multiple signal classification algorithm.
Post hoc analysis of initial treatments and control status in the INITIAL study: an observational study of newly diagnosed patients with asthma
Authors: Lin Jiangtao , Fu Xiuhua , Jiang Ping , Song Weidong , Hu Xiaoyun , Jie Zhijun , Liu Chuntao , He Zhengguang , Zhou Xiangdong , Tang Huaping
Published: April 2020

Background

The 12-week, multicentre, observational INITIAL study (NCT02143739) assessed asthma severity in newly diagnosed Chinese patients.

Methods

Post hoc analysis of medication combinations prescribed per routine clinical practice at baseline, and the impact on control levels evaluated using 2012 vs 2018 Global Initiative for Asthma (GINA) criteria.

Results

In total, 4491 patients were included in the analysis. At baseline, intermittent, mild, moderate and severe asthma was reported in 3.9, 12.0, 22.6 and 61.6% of patients, respectively. Most patients (90.2%) were prescribed inhaled corticosteroid/long-acting β2 agonist (ICS/LABA). ICS/LABA plus ≥1 additional medication(s) was prescribed to 66.7% of patients, with leukotriene receptor antagonist (LTRA, 54.7%) being the most common additional medication. Distribution of ICS/LABA vs ICS/LABA+LTRA was comparable in patients with intermittent (3.2% vs 3.0%), mild (11.5% vs 9.7%), moderate (21.2% vs 19.9%) and severe asthma (64.1% vs 67.4%). Control levels among patients using ICS/LABA+LTRA vs ICS/LABA were comparable using GINA 2012 and lower using GINA 2018 criteria.

The proportion of patients using ICS/LABA+LTRA vs ICS/LABA with intermittent, mild, moderate and severe asthma controlled at Week 12 (using GINA 2012) were 78.1% vs 80.0, 86.5% vs 85.8, 78.5% vs 71.3, and 59.6% vs 61.8%, respectively. Using GINA 2018 criteria proportions were 86.8% vs 95.9, 86.1% vs 93.2, 82.1% vs 85.3, and 71.9% vs 77.6%, respectively.

Conclusions

Asthma control was not improved by adding LTRA to ICS/LABA and may have been unnecessary for some newly diagnosed patients. These findings were irrespective of the GINA criteria (2012 vs 2018) used and baseline severity.
Flexible automatic detection for security management of dispatching data network
Authors: Yang Xianrui , Liu Yuming , Wang Jiehong , Yao Zhao , Zhou Yanping , Fu Shucun
Published: April 2020

Power grid dispatching is among the forefront issues in the power industry for it can highly influence the efficiency of electricity-related industries. At present, power grid dispatching is usually managed manually, which is quite time-consuming with the continuous growth of scale and complexity of electric power systems. To mitigate the time cost of power grid dispatching, an automatic power grid dispatching system is proposed. The system contains devices configuration detection, flexible and automatic device detection and vertical encryption to ensure the efficiency, adaptability and security of power gird dispatching. In this paper, modeling and algorithm details of the automatic power grid dispatching system are presented, and the effectiveness and efficiency of the proposed system was evaluated with power grid data in Kunming, China.
Characteristics of lytic phage vB_EcoM-ECP26 and reduction of shiga-toxin producing Escherichia coli on produce romaine
Authors: Park Do-Won , Lim Ga-yeon , Lee Young-duck , Park Jong-Hyun
Published: April 2020

Foodborne Shiga toxin-producing Escherichia coli (STEC) cause severe diarrhea and hemolytic uremic syndrome (HUS) in humans. However, traditional methods for STEC sterilization are difficult to apply to fresh food. To control the pathogen, phage infecting E. coli O157:H7 were isolated and characterized. The isolated phage vB_EcoM-ECP26 had an icosahedral head and a contractile tail, and was classified as belonging to the Myoviridae family. The phage showed a broad host range against STEC and exhibited a large burst size of 1914 PFU/cell. The phage was highly stable at high temperatures (65 °C) and wide ranges of pH (4–10). The genome of vB_EcoM-ECP26 consists of 136,993 nucleotides, 214 open reading frames, and does not contain lysogenicity-related genes. Phylogenetic analysis showed that vB_EcoM-ECP26 is a V5-like species. STEC O157 growth was inhibited by vB_EcoM-ECP26 for 8 h. Furthermore, this phage not only significantly decreased the STEC population (p < 0.05), but also persisted in fresh lettuce at 4 °C for 5 days. Therefore, these results reveal that the novel lytic phage vB_EcoM-ECP26 could be a useful agent for the control of foodborne STEC.
Congenital Tracheal Aplasia Without Prenatal Diagnosis Masked by Maternal Obesity and Gestational Diabetes: A Case Report
Authors: Yamamoto Tomohiro , Kurabe Miyuki , Matsumoto Kensuke , Sugai Shunya , Baba Hiroshi
Published: April 2020

This case report describes a neonate with tracheal aplasia first diagnosed after birth due to the presentation of respiratory distress, absence of crying, and unsuccessful tracheal intubation. The most common finding with tracheal aplasia is polyhydramnios. However, diagnosis remains challenging in the prenatal period. In this case, maternal obesity and gestational diabetes made diagnosis more difficult. The only lifesaving treatment available is ventilation through esophageal intubation or tracheostomy. However, in some cases, tracheostomy is not an option.
A TEORIA DA COMPLEXIDADE E A EDUCAÇÃO EXPERIENCIAL AO AR LIVRE: UM OLHAR À LUZ DA EDUCAÇÃO AMBIENTAL
Authors: Mariano Erich De Freitas
Published: April 2020

O pensamento complexo defende que a contextualização do conhecimento deve ser priorizada e a educação experiencial define que as experiências já vividas pelos alunos e a reflexão das experiências que foram mediadas pelo educador também fundamentam a construção do saber. A relação entre a ação/experiência e suas consequencias e reflexões, ou seja, sua contextualização, é o que proporciona uma aprendizagem significativa. A educação pela aventura utiliza ferramentas que recontextualizam o conhecimento e reveem a relação do ser humano com a natureza por uma ótica hologramática. Consideram a interpretação complexa da realidade e por fim trabalha com as causas e efeitos dos problemas ambientais.
Apresentação. Sobre gratidão e abundância: algumas palavras acerca do trabalho de e entre mulheres
Authors: Furtado de Melo Rebeca
Published: April 2020

ApresentaçãoSobre gratidão e abundância: algumas palavras acerca do trabalho de e entre mulheres
The power of song: music therapy and dementia
Authors: Grady Maggie , Beach Kate Hicks
Published: April 2020

Advanced or complex dementia requires a blend of treatment and therapy for effective management. Gloucestershire charity Mindsong explains its work in using music therapy to reduce stress and support daily care
OLHARES E PERCEPÇÕES SOBRE AS CISTERNAS DE POLIETILENO A PARTIR DAS JORNADAS DE AVALIAÇÃO
Authors: Santos Kamilla Ferreira
Published: April 2020

O artigo aborda os olhares e percepções dos sujeitos envolvidos em nove “jornadas de avaliação das cisternas de polietileno implantadas nos municípios baianos” realizadas com objetivo de avaliar os avanços e desafios ocorridos na vida das famílias beneficiadas com a cisterna de polietileno. Alémdisso, as jornadas também pretenderam capacitar os participantes para que se apropriassem de elementos chaves quanto ao uso racional da água e os cuidados com a cisterna tornando-se multiplicadores em seus municípios e comunidades. Para esta ação, utilizou-se a metodologia participativa, adotando o Diagnóstico Rural Participativo onde os envolvidos refletiram, a partir de sua realidade, as mudanças ocorridas e as fragilidades que persistem no entorno da cisterna de polietileno. Os resultados demonstraram que foi uma ação relevante para os municípios que estavam em situação de emergência. Contudo, existem outras políticas públicas de acesso à água para consumo humano que possui maior efetividade e está inserida na proposta da convivência com o semiárido.
Against comfort: political implications of evading discomfort
Authors: Munch-Jurisic Ditte Marie
Published: April 2020

We typically think of emotional states as highly individualised and subjective. But visceral gut feelings like discomfort can be better understood as collective and public, when they reflect implicit biases that an individual has internalised. Most of us evade discomfort in favour of comfort, often unconsciously. This inclination, innocent in most cases, also has social and political consequences. Research has established that it is easier to interact with people who resemble us and that such in-group favouritism contributes to subtle forms of discrimination. If we want a more equal and unbiased society, we have a duty to expose ourselves to more discomfort. Living up to this duty requires an enhanced emotional vocabulary that captures the political dimensions of physiological affect. I argue that a better understanding of what I call interaction discomfort can mitigate subtle forms of discrimination.
Morality in aversion?: Meditations on slum tourism and the politics of sight
Authors: Henry Jacob
Published: April 2020

Despite fairly widespread popularity, slum tourism is enmeshed in moralizing debate. Supporters acknowledge that slum tourism may sometimes be problematic, but also may potentially be an important pedagogical experience which reveals the horrors of capitalism to westerners. Plus, supporters argue, there is no morality in aversion – we should never turn away from slums and poverty. However, social theory on the politics of sight and opacity suggests that the promise of transparency – showing the real poverty – may lead to a violence of seeing and knowing rooted in western development epistemologies. I argue that morality can be found in aversion and turning away from slum tourism in many instances. I suggest that wealthy, western and usually white bodies of slum tourists represent the violence of the status quo which seeks to make legible a periphery and to partially re-integrate into capital those who have been expelled from it. This paper contributes to a growing literature which deploys social theory to understand and critique slum tourism and its relationship with capitalist society.
Supportive, transformative and reverse effects of media on Tunisian diaspora’s political identity
Authors: Shehata Mostafa
Published: April 2020

The Tunisian diaspora in Europe has gained significant research interest due to the fundamental changes recently triggered by the Tunisian Revolution with which the diaspora strongly interacted. This article investigates the potential effects of media use on the political identity of Tunisian diasporic communities in Europe, from a sociopolitical communication perspective. Based on 45 interviews conducted with Tunisians living in Denmark, Sweden and France, a special focus has been set on the patterns of media use in relation to components of political identity (homeland orientation, religion and ideology), considering the combined influences of both country of origin and country of residence. The analysis shows that media exerted supportive effects on the diaspora’s homeland orientations – a process that likely depended on participants’ previous connection with Tunisia. The media also exerted short-term transformative effects on the political ideology and a reverse effect on religious orientations – a process that mainly depended on life in both country of origin and country of residence. This article proposes that this Tunisian diaspora is more likely to construct a hybrid identity, supported by media channels that facilitate the adoption of sociopolitical principles derived from both country of origin and country of residence.
PERBANDINGAN KONSEP REKAYASA BUDAYA ORGANISASI MODEL PEMBENTUKAN KEBIASAAN, SHOOK, DAN SCHEIN PADA ORGANISASI PROYEK
Authors: Tripiawan Wawan , Aurachman Rio
Published: April 2020

Budaya organisasi adalah suatu bagian dari sistem terintegrasi, baik itu itu organisasi terstruktur maupun komunitas tidak terstruktur. Kebanyakan penelitian tentang budaya organisasi membahas tentang apa kaitan budaya dengan variabel lainnya di dalam organisasi. Atau bagaimana cara mengukur suatu budaya di dalam organisasi. Pada era kemajuan teknologi, perubahan yang cepat, dan kompleksitas tinggi, dibutuhkan suatu metode untuk mengubah budaya organisasi dengan tepat. Penelitian kali ini berusaha untuk mengkaji tiga konsep yang menawarkan metode untuk mengubah budaya organisasi. Ketiga konsep tersebut menawarkan paradigma yang sama. Yaitu bahwa perubahan budaya terjadi bukan dimulai dari mengubah sesuatu yang abstrak dan softsystem. Akan tetapi perubahan budaya justru perlu dimulai dari perubahan sesuatu yang konkret dan nyata,. Hal itu meliputi prosedur, cara kerja, infrastruktur, dan artefak lainnya yang ada di dalam organisasi perusahaan. Dari ketiga konsep tersebut kemudian disintesis untuk didapatkan sebuah konsep usulan. Konsep usulan tersebut yang diharapkan lebih mudah diimplementasikan dan dipahami oleh para pegiat dan peneliti di bidang budaya organisasi.
DETERMINATION OF GRANULATED SUGAR ALTERNATIVES USING ANALYTICAL HIERARCHICAL PROCESS (AHP)
Authors: Mastrisiswadi Hasan , Solihin Kurniaji Wahid , Azis Ardiyanto , Robbiyamto Nurul Hidayat
Published: April 2020

In 2019, the government planned to achieve sugar self-sufficiency to meet domestic sugar needs. One type of sugar that is most consumed is granulated sugar. In Indonesia, various models, prices, and sizes of sugar are marketed. Competition for producers in selling their products is getting tighter, so they need to understand the criteria that influence consumers in buying granulated sugar. Research on sugar has been conducted, but until now, research on determining the criteria for sugar products has never been conducted. Many factors are the criteria for choosing sugar to be selected by consumers. To find out what alternatives and criteria are preferred by consumers, the method of Analytical Hierarchical Process (AHP) is used. AHP method consists of several stages that are: hierarchy determination, evaluation of criteria and alternatives, Synthesis of priority, logical consistency, and preference value. From the results of calculations that carried out, it was found that the quality and taste were the highest criteria as a reference for choosing sugar brands.
Гендерні особливості мотивації до лідерства у студентів університету
Authors: Кулеша-Любінець Мирослава , Ляхович Тетяна
Published: April 2020

У статті проаналізовано основні підходи до визначення поняття «мотивація до лідерства» у молоді. Визначено складові мотивації до лідерства у студентів: індивідуальні потреби та мотиви (індикатором є мотиви лідерства); спрямованість особистості (індикатором є види спрямованості); поведінка особистості (індикатором є стилі лідерства). Зроблено висновок про гендерні особливості мотивації до лідерства у студентів університету.
Щастя як соціально-психологічний феномен
Authors: Лютак Оксана , Федик Оксана
Published: April 2020

У статті проаналізовано соціально-психологічні чинники щастя на індивідуальному та соціальному рівнях загалом, і в українському суспільстві зокрема. Соціально-психологічна природа феномену «щастя» полягає у забезпеченні функції сімейного щастя, соціального благополуччя і психологічного здоров’я українських громадян. Особливу увагу звернено на феномен сімейного щастя як важливого чинника психологічного благополуччя людини. У контексті проблеми сімейного щастя автори розглядають питання сексуальності особистості як його важливої складової.
Application of fibro concrete mixture at construction of bases and coatings automobile roads
Authors: Levkovich Tatiana , Mevlidinov Zelgedin , Fedin Nikita
Published: April 2020

Fiber concrete – concrete with the inclusion of fibers (fibers) from inorganic or organic materials (steel, glass, polyethylene, etc.). Fiber concrete reinforced with fibers, has a high resistance to shock loads and abrasion, well perceives tensile stresses.

An important issue in the preparation of fiber-reinforced concrete is its mobility. One of the difficulties encountered in practice when working with fiber reinforced concrete, reinforced by steel wire, is its lack of workability. To ensure the required workability of the concrete mixture and to achieve a uniform distribution of wire segments in it, it is necessary, in addition to the wire segments and the core, to control their ratio.

Tests of fiber reinforced concrete showed that the larger the aggregate size, the lower the flexural strength. The use of granite crushed stone with a size of 20 mm allows to obtain better results than when using crushed stone from gravel or limestone. While in ordinary concrete, the quality of rubble increases the flexural strength, in fibrous concrete, the flexural strength increases the effectiveness of the fibers.

The use of fiber-reinforced concrete in the construction of road pavements is determined by technical and economic efficiency, which is caused by the most complete use of the positive properties of fiber-reinforced concrete as compared to conventional cement concrete.

Fiber concrete has several advantages compared to conventional cement concrete:

a) increased crack resistance, impact toughness, wear, – frost and fire resistance, thermodynamic resistance, etc.;

b) the possibility of use without conventional rod or wire steel reinforcement;

c) reducing labor costs for reinforcement works, increasing the degree of mechanization and automation of road and airfield pavement construction.

In recent years, the use of concrete (cement concrete) foundations and pavements of highways and industrial sites has begun to revive in road construction.

The use of various types of cement concrete and fiber concrete (steel fiber concrete, glass fiber concrete, fiber concrete on synthetic fiber) will increase the durability of road and airfield pavements, increasing resistance to shock loads, abrasion and tensile stresses.
Study of the stress-strain state of reinforced geosynthetic material or the foundation of the bored foundation of the bridge
Authors: Kudryavtsev Sergey , Valtseva Tatiana , Shemyakin Vyacheslav , Bugunova Yuliya , Kotenko Zhanna
Published: April 2020

The building of constructions in northern regions of the Far East is always connected with a high degree of seasonal freezing risk. This especially refers to a line transport structures which require a high level of reliability and responsibility. Such structures should provide permissible deformability and bearing capacity of the bases when exposed to promising moving loads in difficult geological and climatic conditions.

The article discusses the study of the foundations of bored foundations of bridges using methods of mathematical modeling and geosynthetic materials. The study used standard and numerical calculation methods to determine the rational parameters of structural elements and the degree of their operational reliability and durability. In determining the behavior of structures as a whole with the joint interaction of their individual elements with each other, nonlinear models of the soil of the base of the structures were used. Numerical modeling of bored foundations in an elasto-plastic soil mass allowed us to develop effective structural solutions to reduce the deformability of the bridge and increase the bearing capacity of the pile foundation due to reinforcing measures during the construction of the grillage and the creation of rational parameters of the structure as a whole.

One of the rational solutions for the main issues which is connected with a construction of facilities in the areas with complex geological and climatic conditions is reasonable usage of modern geosynthetic material properties. Such materials are capable of providing long-term stable operation of facilities made of local building materials. So, the properties of such geosynthetics materials must fully comply with the demands of conditions of their work in the structures and provide a long lifespan as well as high quality.
Polyester acrylate binders for transport vehicles
Authors: Myshkin Anton
Published: April 2020

Transport facilities along with mechanical loads are exposed to various aggressive environments, including chemical and biological, as well as climatic factors. Materials in the process of operation in the air in open areas, as well as in some buildings and structures, along with physical and chemical influences are exposed to microbiological influences, mainly microscopic fungi, which can use their individual components as a source nutrition. One of the effective ways to protect and repair building structures from microbiological damage is the use of polymer compositions in the form of paints, mastics and other compositions. It is important to select biological compositions that are resistant to biological damage and are obtained using various formulations of the curing system of the polymer binder and the components of the polymer-mineral mixture. Also relevant is the use of materials with high climatic resistance. The article substantiates the relevance of using modern concrete with improved physicomechanical and operational properties based on polymer binders to increase the climatic resistance of the structures of transport structures. The results of climatic tests of polyester acrylate composites are presented. The compositions with the highest resistance to the effects of the conditions of the Black Sea coast have been identified. A correlation was found between the most stable composition and the smallest variety of microorganisms that populate the surface of the samples after testing. Processing and description of the results made it possible to identify the compositions of polyester acrylate composites that can be recommended for use. The use of polyester acrylate binder for the manufacture of composite materials for the repair and manufacture of structures of transport structures is proposed.
Modern methods of analysis and quality assurance of the complex engineering structures design process
Authors: Nikinin Vadim , Guskova Marina , Trofimov Dmitry , Telyatnikova Natalia
Published: April 2020

This article clarifies the definition of the quality of project documentation, as the degree of compliance of the composition, content, volume and presentation of project documents with the requirements of existing standards, taking into account the factors of errors and the level of graphic display of documents originals and copies. Considered measures to improve the quality of the procedure of field supervision, as a stage of the design process based on an analysis of the quality of the process of restora (reconstruction) of the tramway section.

The authors assessed the quality of the design process and determined its effectiveness at the stages of the design life cycle depends on the application of various methods. For example, for the first stage we apply the method of the context diagram and the decomposition of the first level, i.e. life cycle process. The second stage of the analysis included the monitoring of the author’s supervision process, and it was concluded that the effectiveness of the quality assessment would be achieved by applying an element of the balanced scorecard methodology – that is, strategic map.

The final stage of the work involved identifying the risks of the author’s supervision process and developing measures to eliminate them, so one of the process indicators, “The number of inconsistencies found during the author’s supervision”, was taken into account. To identify the root causes of deviations, the indicator under consideration, a quality control tool was used – the causal diagram of K. Ishikawa.

To determine the risk of the process of field supervision and the proposal of measures to reduce its level, the P-FMEA method of analysis was used. For the third stage in the assessment of the name of the indicator: «Satisfaction of the group of architectural supervision of the production environment». The goal is to increase the level of production environment conditions.

The goal is to increase the level of production environment conditions. The perspective of this indicator on the MTP is the section “Training and Development”. The method of assessing the indicator can serve as an adapted technique SERVQAUAL for the process of conducting field supervision.
Field test of composite ground improved by different methods in red soil areas of China
Authors: Du Feng-Lei , Lu Shi-Feng , Liu Jin-Bo , Cao Ben-Yi , Zhao Xiao-Guang , Mao An-Qi , Wang Ning
Published: April 2020

Large oil tanks are often vulnerable to weak bearing capacity and uneven settlement of foundations, which gives rise to potential losses of both lives and property. Although the pile foundation is commonly used for large oil tanks, its high costs make it less applicable in many cases. Recently, improved ground has been adopted as a tank foundation because it is highly cost-effective. In this study, typical composite grounds improved by dynamic compaction, dynamic replacement and cement fly-ash gravel piles were adopted to work as the foundation for ten large, heavy oil tanks under various geological conditions in red soil areas in China. The results relating to improvement of the composite ground were studied comparatively in detail using in situ tests, including the dynamic penetration test, plate-load test and water injection test. Field studies show that the bearing capacity of the composite ground after treatment is over 260 kPa within the improvement depth, meeting the design requirement for the long-term service of the ten oil tanks. The field test and relevant findings indicate a promising future for composite ground in relation to large, heavy oil tanks.
PENGARUH CITRA MEREK TERHADAP MINAT BELI : STUDI PADA PRODUK KECANTIKAN
Authors: Fauziah Ninda , Aziz Mubarok Dadan Abdul
Published: April 2020

This study aims to analyze the impact of brand image on purchase intention of Safi Skincare in the city of Bandung. The research method approach uses a quantitative method. The research sample of 99 respondents. Data obtained by crossing the questionnaire. Data analysis using linear regression. Dimensions to measure the impact of brand image on consumer purchase intention by consumer perceptions, product brand slogans and brand positioning. The results of the study explain that brand image significantly influences purchase intention. The theoretical implication of this research is brand image influences purchase intention with a very strong (positive) relationship and is proportional. While the study's implications are aimed at the skincare cosmetics industry, it is expected to become one of the references in business management by optimizing brand utilization, because brand is one of the most influential things and can be used as a very promising and profitable means for marketing strategies.Keywords: brand image; purchase intention; skincare; brand
ANALISIS MODEL PEMBIAYAAN UMKM MELALUI PERAN LEMBAGA KEUANGAN MIKRO
Authors: Anggraeni Devi , Herlinawati Erna
Published: April 2020

Tujuan penelitian ini untuk menganalisis model pembiayaan yang sesuai dengan harapan pelaku UMKM melalui peran Lembaga Keuangan Mikro (LKM). Metode penelitian menggunakan mix methods dengan jenis deskriptif-eksploratif. Populasi 150 UMKM di Kota Bandung Jawa Barat, dengan 52 sampel yang telah mendapat pembiayaan melalui LKM dan telah beroperasi minimal 3 tahun. Analisis data menggunakan analisis deskriptif, analisis SWOT, IFAS dan EFAS.Hasil penelitian menunjukkan model pembiayaan belum sepenuhnya sesuai harapan pelaku UMKM, diantaranya prosedur pembiayaan dipersepsikan  rumit dan bunga masih tinggi, sehingga pelaku UMKM masih banyak yang mengandalkan modal sendiri dalam membiayai usahanya.  Berdasarkan temuan penelitian, maka model pembiayaan kooperatif dipersepsikan cocok untuk UMKM, dimana LKM  menjadi lebih optimal menjalankan perannya sebagai fasilitator pengelolaan keuangan, manajemen, dan pemasaran dengan melibatkan jaringan usaha dan komunitas. LKM lebih menjangkau UMKM sehingga mudah diakses, prosedur lebih sederhana, dan memberikan tawaran bunga lebih murah melalui pemanfaatan program pemerintah dan lembaga keuangan lain yang terkait.
PENGARUH WEB DESIGN TERHADAP INTENSI PEMBELIAN PRODUK FESYEN (Survei pada Pengunjung Website ZALORA Indonesia di Kota Bandung)
Authors: Faustina Maria Gabriella , Herawaty Tetty , Barkah Cecep Syafa’atul
Published: April 2020

Penelitian ini bertujuan untuk mengetahui pengaruh web design terhadap intensi pembelian ZALORA Indonesia. Survei dilakukan pada pengunjung website ZALORA Indonesia di Kota Bandung, melalui kuesioner, sebanyak enam puluh tiga orang. Sampel didapat berdasarkan perhitungan iterasi dan dilakukan secara convenience sampling. Jenis penelitian yang digunakan kuantitatif-asosiatif kausal, dengan pengujian hipotesis. Metode yang digunakan adalah Analisis Regresi Sederhana, Analisis Korelasi, dan Koefisien Determinasi dalam mencari pegaruh Web Design (X) dengan Intensi Pembelian (Y). Hasil dari penelitian ini menyatakan bahwa adanya pengaruh, signifikan, web design terhadap intensi pembelian. Konten informasi menjadi dimensi dengan persentase terbesar untuk web design, dan definite intention menjadi indikator dengan persentase terbesar untuk intensi pembelian. Berdasarkan uji hipotesis, penelitian ini menyatakan terdapat pengaruh web design terhadap intensi pembelian.
Quantification 2.0? Bibliometric Infrastructures in Academic Evaluation
Authors: Krüger Anne K.
Published: April 2020

Due to developments recently termed as ‘audit,’ ‘evaluation,’ or ‘metric society,’ universities have become subject to ratings and rankings and researchers are evaluated according to standardized quantitative indicators such as their publication output and their personal citation scores. Yet, this development is not only based on the rise of new public management and ideas on ‘the return on public or private investment.’ It has also profited from ongoing technological developments. Due to a massive increase in digital publishing corresponding with the growing availability of related data bibliometric infrastructures for evaluating science are continuously becoming more differentiated and elaborate. They allow for new ways of using bibliometric data through various easily applicable tools. Furthermore, they also produce new quantities of data due to new possibilities in following the digital traces of scientific publications. In this article, I discuss this development as quantification 2.0. The rise of digital infrastructures for publishing, indexing, and managing scientific publications has not only made bibliometric data become a valuable source for performance assessment. It has triggered an unprecedented growth in bibliometric data production turning freely accessible data about scientific work into edited databases and producing competition for its users. The production of bibliometric data has thus become decoupled from their application. Bibliometric data have turned into a self-serving end while their providers are constantly seeking for new tools to make use of them.
Algorithmic Allocation: Untangling Rival Considerations of Fairness in Research Management
Authors: Dix Guus , Kaltenbrunner Wolfgang , Tijdink Joeri , Valkenburg Govert , De Rijcke Sarah
Published: April 2020

Marketization and quantification have become ingrained in academia over the past few decades. The trust in numbers and incentives has led to a proliferation of devices that individualize, induce, benchmark, and rank academic performance. As an instantiation of that trend, this article focuses on the establishment and contestation of ‘algorithmic allocation’ at a Dutch university medical centre. Algorithmic allocation is a form of data-driven automated reasoning that enables university administrators to calculate the overall research budget of a department without engaging in a detailed qualitative assessment of the current content and future potential of its research activities. It consists of a range of quantitative performance indicators covering scientific publications, peer recognition, PhD supervision, and grant acquisition. Drawing on semi-structured interviews, focus groups, and document analysis, we contrast the attempt to build a rationale for algorithmic allocation—citing unfair advantage, competitive achievement, incentives, and exchange—with the attempt to challenge that rationale based on existing epistemic differences between departments. From the specifics of the case, we extrapolate to considerations of epistemic and market fairness that might equally be at stake in other attempts to govern the production of scientific knowledge in a quantitative and market-oriented way.
A comparative study of interval cholecystectomy and early cholecystectomy in acute cholecystitis
Authors: Singh Gursimranjit , Singh Rana Ranjit , Bansal Darpan
Published: April 2020

Background: In the whole world including India, the incidence of acute cholecystitis is increasing day by day. Gall stones are the most common cause of acute cholecystitis in 90-95% of the cases. The management of acute cholecystitis was conservative earlier but now there are studies recommending early surgery as the treatment of choice.Methods: Our study was conducted on 60 patients divided into two groups of 30 each to compare the results of early surgery with the delayed surgery.Results: The overall post-operative complication rate was same in both the groups but there was significant difference in the total hospital stay and total cost of the therapy in both the groups. The average total hospital stay in early group was 6.50±4.44 days and in delayed group was 10.80±5.55 days without including the number of days in non-operating admission.Conclusions: So, early cholecystectomy was found to be more economical with less total hospital stay and less total cost of the therapy than interval cholecystectomy in acute cholecystitis.
An empirical study on the factors influencing the performance of financial institutions in Zimbabwe
Authors: Moyo Isabel Linda , Gumbo Victor , Chikodza Eriyoti , Jones Brian
Published: April 2020

The main aim of this study was to empirically assess the main microeconomic factors that affect a bank's performance. The objectives were to ascertain if there is a relationship between the performance variables with the microeconomic variables, determine those that are significant and their impact on the performance of banks in Zimbabwe. An econometric model was built from balanced panel data and the Arellano-Bond estimation procedure was employed. The empirical analysis was carried out on a sample of 17 banks that were operational in the years 2010 to 2017 in Zimbabwe. Return on Assets (ROA), Return on Equity (ROE) and Net Interest Margin (NIM) were used as the performance indicators in the analysis. The results indicate the main microeconomic factors to be those attributed to growth, credit risk, capitalisation, managerial efficiency, liquidity and diversification in the Zimbabwean financial institutions. Performance in these institutions is generally good as measured by positive persistent profits, that is, ROA, ROE and NIM. These returns reflect the extent to which these institutions are resilient to the economic crisis.
Brief: Providing Quality User Support
Authors: Flew S. R. , Kneath T. H.
Published: April 2020

Petroleum engineering software products are often highly complex packages with a wide variety of functions. Users must have confidence in these software tools, must fully understand how their data are being modeled, and must have access to timely advice on how best to apply and use these products. As software packages become more complex, there are greater chances of user error, programming error, or misapplication producing an erroneous result. Software venders must provide users with efficient, reliable tools and adequate training so that they can perform their jobs effectively.

Introduction

Steady increases in desktop computing power have resulted in more widespread use of complex software tools by engineers. Previously, many of these tools were used by only a few specialists who developed and ran the codes. Pressures to reduce costs have resulted in increased duties for many users. Consequently, many users can no longer afford the time required to become specialists in the software package they use and to understand fully how the software interprets their data. These users will inevitably require more support and hand-holding, particularly when using advanced features for the first time.

Software venders must produce high-quality, applicable products and provide sufficient training to educate new users in the best application of these tools. In addition, venders must support the productivity gains that result from use of these complex products by developing more intuitive interfaces.

Using our experience in developing, maintaining, and supporting reservoir simulation software products, we review the possible problem areas in petroleum engineering software product design and recommend ways to avoid them. In particular, we investigate techniques and methods to maximize the quality of released software, to train and educate new users in making the best use of the software, to answer ad hoc questions on the use and functionality of the software, to minimize response time to identify and fix coding errors, and to enhance client liaison.