bluuebunny/crossref_metadata_2025 huggingface dataset:
High Sensitivity Refractometer Based on a Tapered-Single Mode-No Core-Single Mode Fiber Structure
Authors: Yang Wenlei , Zhang Shuo , Geng Tao , Li Le , Li Guoan , Gong Yijia , Zhang Kai , Tong Chengguo , Lu Chunlian , Sun Weimin , Yuan Libo
Published: April 2019

We have proposed a novel tapered-single mode-no core-single mode (TSNS) fiber refractometer based on multimode interference. The TSNS structure exhibits a high contrast ratio (>15 dB) and a uniform interference fringe. The influence of different lengths and diameters of the TSNS on the refractive index unit (RIU) sensitivity was investigated. The experimental investigations indicated a maximum sensitivity of 1517.28 nm/RIU for a refractive index of 1.417 and low-temperature sensitivity (<10 pm/°C). The experimental and simulation results are also in good agreement.
Relevancy of Nizatidine Release from Floating Tablets with Viscosity of Various Cellulose Ethers
Authors: Shahzad Yasser , Ibrar Namra , Hussain Talib , Yousaf Abid Mehmood , Khan Ikram Ullah , Rizvi Syed A. A.
Published: April 2019

Nizatidine is a gastroprotective drug with a short biological half-life and narrow absorption window. This study aimed at developing floating tablets of nizatidine using various HPMC viscosity grades, namely K4M, E4M, K15 and K200M. Directly compressed tablets revealed an excellent uniformity in hardness, thickness and weight and nizatidine was evenly distributed within the matrix floating tablets. Buoyancy study revealed floating lag time as low as 18–38 s, and tablets remain buoyant for upto 24 h. However, the later depended upon viscosity grade of HPMC and that the higher the viscosity, the less was the total floating time. In vitro dissolution indicated viscosity dependent nizatidine release from the floating tablets. HPMC K4M and E4M based floating tablets released almost 100% drug in 12 h, whilst higher viscosity polymers such as K15 and K200M only released 81.88% and 75.81% drug, respectively. The drug release followed non-Fickian diffusion from tablets formulated with K4M, K15 and K200M, whilst super case II transport was observed with E4M based tablets. More interestingly, K4M and E4M polymers have similar viscosity yet exhibited different drug release mechanism. This was attributed to the difference in degree of substitution of methoxyl- and hydroxypropoxyl- groups on polymer backbone.
Pyrolysis Temperature Effects on Biochar–Water Interactions and Application for Improved Water Holding Capacity in Vineyard Soils
Authors: Marshall Jon , Muhlack Richard , Morton Benjamin J. , Dunnigan Lewis , Chittleborough David , Kwong Chi Wai
Published: April 2019

Grapevine cane and stalks were considered for pyrolysis at 400 to 700 °C to produce biochar for increasing the water holding capacity of vineyard soil. Feedstocks were pyrolysed using a continuous feed reactor and the resulting biochars characterized in terms of physico-chemical properties, including water retention performance. Hydrophobicity was found in biochar from both feedstocks pyrolysed at 400 °C, but not at higher temperatures. At low soil matric potential, the pyrolysis temperature was the defining variable in determining water retention whereas at higher pressures, the feedstock was the more important variable. Available water content (AWC) of biochar increased with increasing pyrolysis temperatures, with optimal results obtained from grapevine cane at a pyrolysis temperature of 700 °C, which had an AWC 23% higher than a typical clay type soil. Principal component analysis showed variability in water retention of these biochars to be closely associated with the zeta potential, as well as the carbon and ionic content, suggesting that surface charge and hydrophobicity are key properties determining water holding capacity. Pure biochars were superior in water retention performance to typical sandy soils, and so biochar amendment of these soil types may improve water holding (particularly at field capacity). Further study with pot or field trials is recommended to confirm water retention behaviour and assess the feasibility of application under different viticultural scenarios.
The Case for Digging Deeper: Soil Organic Carbon Storage, Dynamics, and Controls in Our Changing World
Authors: Gross Cole D. , Harrison Robert B.
Published: April 2019

Most of our terrestrial carbon (C) storage occurs in soils as organic C derived from living organisms. Therefore, the fate of soil organic C (SOC) in response to changes in climate, land use, and management is of great concern. Here we provide a unified conceptual model for SOC cycling by gathering the available information on SOC sources, dissolved organic C (DOC) dynamics, and soil biogeochemical processes. The evidence suggests that belowground C inputs (from roots and microorganisms) are the dominant source of both SOC and DOC in most ecosystems. Considering our emerging understanding of SOC protection mechanisms and long-term storage, we highlight the present need to sample (often ignored) deeper soil layers. Contrary to long-held biases, deep SOC—which contains most of the global amount and is often hundreds to thousands of years old—is susceptible to decomposition on decadal timescales when the environmental conditions under which it accumulated change. Finally, we discuss the vulnerability of SOC in different soil types and ecosystems globally, as well as identify the need for methodological standardization of SOC quality and quantity analyses. Further study of SOC protection mechanisms and the deep soil biogeochemical environment will provide valuable information about controls on SOC cycling, which in turn may help prioritize C sequestration initiatives and provide key insights into climate-carbon feedbacks.
Sustainability Value Creation, Survival, and Growth of the Company: A Critical Perspective in the Sustainability Balanced Scorecard (SBSC)
Authors: Hristov Ivo , Chirico Antonio , Appolloni Andrea
Published: April 2019

The issue of sustainability in company strategy has assumed crucial relevance in recent years. Many companies have implemented specific environmental and sustainability management systems such as the Sustainability Balanced Scorecard (SBSC), which integrates sustainability and the traditional Balanced Scorecard (BSC). However, environmental and sustainability aspects are often not linked to economic success, and qualitative analysis is not considered adequately by managers. Therefore, these dimensions remain unclear, because it is necessary to analyze the conditions under which the SBSC represents a suitable tool for sustainability value creation in more depth. In this context, the purpose of the study is to propose a new strategic framework to provide a way to manage critical issues connected to the SBSC. Thanks to the information obtained from a survey and interviews conducted with managers of Italian companies, we created an adjusted SBSC (ASBSC) that allows us to consider the critical aspects from a new perspective, named the critical perspective. The conceptual model is developed in five dimensions (conceptual, structural, environmental, social, and economic). Research findings suggest that considering the critical perspective makes it possible to build the ASBSC in order to achieve sustainability and economic success of the company. The proposed framework contributes to the existing literature on improving the performance of the SBSC.
Fostering Community Values through Meal Sharing with Strangers
Authors: Veen Esther J.
Published: April 2019

This paper studies a Dutch meal sharing platform in order to understand what it means to engage in face-to-face sharing with strangers and what the performance of such transactions entails. I hypothesize that this meal sharing platform is a form of community self-organization, aiming to replace the anonymity of the food system by the creation of community relations through sharing. I used semistructured interviews, participant observations, and autoethnography to investigate the social aspects involved in this type of sharing. Focusing on rules of engagement, trust, exchange, and commodification, I argue that while first encounters in stranger food sharing may be awkward, people enter the transaction from a perspective of trust. While sharing meals through this platform is a form of true sharing and no direct reciprocity is required, consumers see their appreciation for the meals as a way to reciprocate. In that sense, positive reviews consolidate the relations between cook and consumer. Money also plays an important role in the transaction, enabling it to take place as it clarifies roles and responsibilities and shows genuine interest. However, commodification also means that users are looking for value for money, while simultaneously they expect the price to reflect the initiative’s “noncommercialness”. I conclude that there is a clear social element in this particular type of meal sharing that distinguishes it from more mainstream economic transactions. Being based on real connections, this particular performance of sharing is a way to socialize the economy, and to tackle local community problems.
The Impact of High-Speed Rail on the Service-Sector Agglomeration in China
Authors: Tian Meng , Li Tongping , Yang Shuwang , Wang Yiwei , Fu Shuke
Published: April 2019

High-speed rail (HSR) can potentially influence various economic activities across space. Estimating the impacts of HSR on service-sector agglomeration (SSA) was proven to be difficult but meaningful. In this paper, prefectural-level data from 1998 to 2016 and a panel data program evaluation method are employed to evaluate the effect of the Wuhan–Guangzhou HSR (WGHSR) on the SSA along the route. In this way, we construct hypothetical counterfactuals for SSA index of the WGHSR cities in the absence of the HSR projects using the SSA index in selected non-HSR cities. By comparing the counterfactual index and the actual index, the evaluation of the WGHSR’s impact on the SSA along the route can be obtained. The results show that: (a) the WGHSR has increased the SSA by 9.44% on average for cities along the WGHSR, and (b) the impacts of the WGHSR on the SSA are heterogeneous. The WGHSR has brought about both spillover effect and “siphon” effect. In addition, whether the HSR influences and how much it could influence the SSA requires other supplementary conditions to be met. As a national strategy in China, the construction plan of HSR should fully consider its heterogeneity of impact on regional development. Policies should be formulated to drive the HSR’s spillover effect to promote regional sustainable development.
The Presentation of Automotive Brands in the On-Line Environment—The Perspective of KIA, Peugeot, Toyota and VW in the Slovak Republic
Authors: Soviar Jakub , Holubčík Martin , Vodák Josef , Rechtorík Miroslav , Pollák František
Published: April 2019

This article deals with the analysis of the reputation of global automobile manufacturers primarily in the territory of the Slovak Republic for their comparison. The reputation of brands in the wider Central European and global context has also been considered. The selected brands were Volkswagen, Toyota, KIA, and Peugeot. Selected car brands either have a production plant in Slovakia or are well known in Slovakia, thanks to high global brand awareness. E-business marketing activities in the automotive sector are a major challenge to sustainability in the industry. The analysis took into account official information provided by automotive companies for the purpose of reputation management, as well as external data such as automotive media articles, independent reviews and customer feedback. The findings of the article include a detailed analysis of the online reputation of examined individual brands. The article also provides a list of the most important factors that can positively or negatively affect brand reputation, defined based on previous analysis. In conclusion, the authors try to make use of the findings and build a brief set of recommendations on how to correctly apply the reputation management principles to the overall strategy of the organization.
Application of Fuzzy Optimization Model Based on Entropy Weight Method in Atmospheric Quality Evaluation: A Case Study of Zhejiang Province, China
Authors: Wang Xiaodan , Yang Zhengyu
Published: April 2019

A fuzzy optimization model based on the entropy weight method for investigating air pollution problems in various cities of Zhejiang Province, China has been proposed in this paper. Meanwhile, the air quality comprehensive evaluation system has been constructed based on the six major pollutants (SO2, NO2, CO, PM10, PM2.5 and O3) involved in China’s current air quality national standards. After analyzing the monthly data of six pollutants in 11 cities of Zhejiang Province from January 2015 to April 2018 by the above method, the authors found that, although the air quality of cities in Zhejiang Province did not reach the long-term serious pollution of Beijing, Tianjin, and Hebei, the air quality changes in the northern cities of Zhejiang were worse than those in southern Zhejiang. For example, the air quality of Shaoxing in northern Zhejiang has dropped by 14.85% in the last study period when compared with that of the beginning period, and Hangzhou, the provincial capital of Zhejiang, has also seen a decrease of 6.69% in air quality. The air quality of Lishui, Zhoushan and Wenzhou in southern Zhejiang has improved by 8.04%, 4.67% and 4.22% respectively. Apart from the geographical influence, the industrial structure of these cities is also an important cause for worse air quality. From the local areas in southern Zhejiang, cities have developed targeted air pollution control measures according to their own characteristics, including adjusting the industrial structure, changing the current energy consumption structure that heavily relies on coal, and improving laws and regulations on air pollution control, etc. In the four cities in central Zhejiang, the air quality at the end of the period (April 2018) has decreased from the beginning of the period (January 2015), given that there were no fundamental changes in their industrial structure and energy pattern.
Variations and Indications of δ13CSOC and δ15NSON in Soil Profiles in Karst Critical Zone Observatory (CZO), Southwest China
Authors: Liu Man , Han Guilin , Zhang Qian , Song Zhaoliang
Published: April 2019

Soil carbon and nitrogen storage and stabilization are the key to solving the problems of mitigation of global warming and maintaining of crop productivity. In this study, the contents of soil organic carbon (SOC) and soil organic nitrogen (SON) and their stable isotope compositions (δ13CSOC and δ15NSON) in soil profiles were determined in two agricultural lands (including a farmland and an abandoned farmland) and four non-agricultural lands (including two shrub-grass lands and two shrub lands) in the karst critical zone observatory (CZO), Southwest China. The contents of SOC and SON were used for research on the effects of land use on SOC and SON storage, and the change of δ13CSOC and δ15NSON values in soil profiles were used to indicate SOC and SON stabilization. The results showed that agricultural activities reduced SOC and SON storage in the whole soil layers of farmland compared to non-agricultural lands, and farmland abandonment slightly increased SOC and SON storage. Crop rotation between peanut (C3) and corn (C4) affected the δ13CSOC in surface soils of agricultural lands (−21.6‰), which were intermediate between shrub lands (−22.7‰) and shrub-grass lands (−19.6‰). 15N-depleted SON in surface soils in farmland compared to those soil in other lands possibly associated with synthetic N fertilizer application. In soil layers below 30 cm depth the δ13CSOC deceased with depth, while the δ15NSON displayed irregular fluctuation. The change in δ13CSOC and δ15NSON through soil profiles in karst soils were more intensive than those in semiarid grassland soils indicating the less stabilization of SOC and SON in karst soils.
NHPP Software Reliability Model with Inflection Factor of the Fault Detection Rate Considering the Uncertainty of Software Operating Environments and Predictive Analysis
Authors: Song Kwang Yoon , Chang In Hong , Pham Hoang
Published: April 2019

The non-homogeneous Poisson process (NHPP) software has a crucial role in computer systems. Furthermore, the software is used in various environments. It was developed and tested in a controlled environment, while real-world operating environments may be different. Accordingly, the uncertainty of the operating environment must be considered. Moreover, predicting software failures is commonly an important part of study, not only for software developers, but also for companies and research institutes. Software reliability model can measure and predict the number of software failures, software failure intervals, software reliability, and failure rates. In this paper, we propose a new model with an inflection factor of the fault detection rate function, considering the uncertainty of operating environments and analyzing how the predicted value of the proposed new model is different than the other models. We compare the proposed model with several existing NHPP software reliability models using real software failure datasets based on ten criteria. The results show that the proposed new model has significantly better goodness-of-fit and predictability than the other models.
Assessment of Toxic Effects of Ochratoxin A in Human Embryonic Stem Cells
Authors: Erceg Slaven , Mateo Eva , Zipancic Iván , Rodríguez Jiménez Francisco , Pérez Aragó María , Jiménez Misericordia , Soria José , Garcia-Esparza Mª
Published: April 2019

Ochratoxin A (OTA) is a mycotoxin produced by different Aspergillus and Penicillium species, and it is considered a common contaminant in food and animal feed worldwide. On the other hand, human embryonic stem cells (hESCs) have been suggested as a valuable model for evaluating drug embryotoxicity. In this study, we have evaluated potentially toxic effects of OTA in hESCs. By using in vitro culture techniques, specific cellular markers, and molecular biology procedures, we found that OTA produces mild cytotoxic effects in hESCs by inhibiting cell attachment, survival, and proliferation in a dose-dependent manner. Thus, we suggest that hESCs provide a valuable human and cellular model for toxicological studies regarding preimplantation stage of human fetal development.
Mikania Micrantha Wilt Virus Alters Insect Vector’s Host Preference to Enhance Its Own Spread
Authors: Wang Rui-Long , Zhu-Salzman Keyan , Elzaki Mohammed Esmail Abdalla , Huang Qiao-Qiao , Chen Shi , Ma Zhi-Hui , Liu Shi-Wei , Zhang Jia-En
Published: April 2019

As an invasive weed, Mikania micrantha Kunth has caused serious damage to natural forest ecosystems in South China in recent years. Mikania micrantha wilt virus (MMWV), an isolate of the Gentian mosaic virus (GeMV), is transmitted by Myzus persicae (Sulzer) in a non-persistent manner and can effectively inhibit the growth of M. micrantha. To explore the MMWV-M. micrantha-M. persicae interaction and its impact on the invasion of M. micrantha, volatile compounds (VOCs) emitted from healthy, mock-inoculated, and MMWV-infected plants were collected, and effects on host preference of the apterous and alate aphids were assessed with Y-shaped olfactometers. Gas chromatography-mass spectrometry (GC-MS) analysis indicated that MMWV infection changed the VOC profiles, rendering plants more attractive to aphids. Clip-cages were used to document the population growth rate of M. persicae fed on healthy, mock-inoculated, or MMWV-infected plants. Compared to those reared on healthy plants, the population growth of M. persicae drastically decreased on the MMWV-infected plants. Plant host choice tests based on visual and contact cues were also conducted using alate M. persicae. Interestingly, the initial attractiveness of MMWV-infected plants diminished, and more alate M. persicae moved to healthy plants. Taken together, MMWV appeared to be able to manipulate its plant host to first attract insect vectors to infected plants but then repel viruliferous vectors to promote its own dispersal. Its potential application for invasive weed management is discussed.
Effects of a Covert Infection with Phthorimaea operculella granulovirus in Insect Populations of Phthorimaea operculella
Authors: Larem Andreas , Ben Tiba Saoussen , Fritsch Eva , Undorf-Spahn Karin , Wennmann Jörg T. , Jehle Johannes A.
Published: April 2019

Virus infections of insects can easily stay undetected, neither showing typical signs of a disease, nor being lethal. Such a stable and most of the time covert infection with Phthorimaea operculella granulovirus (PhopGV) was detected in a Phthorimaea operculella laboratory colony, which originated from Italy (Phop-IT). This covert virus (named PhopGV-R) was isolated, purified and characterized at the genetic level by full genome sequencing. Furthermore, the insect colony Phop-IT was used to study the crowding effect, double infection with other PhopGV isolates (CR3 and GR1), and co-infection exclusion. An infection with a second homologous virus (PhopGV-CR3) activated the covert virus, while a co-infection with another virus isolate (PhopGV-GR1) led to its suppression. This study shows that stable virus infections can be common for insect populations and have an impact on population dynamics because they can suppress or enable co-infection with another virus isolate of the same species.
Norovirus Infections and Disease in Lower-Middle- and Low-Income Countries, 1997–2018
Authors: Mans Janet
Published: April 2019

Noroviruses are a major cause of viral gastroenteritis. The burden of the norovirus in low-resource settings is not well-established due to limited data. This study reviews the norovirus prevalence, epidemiology, and genotype diversity in lower-middle-income countries (LMIC) and in low-income countries (LIC). PubMed was searched up to 14 January 2019 for norovirus studies from all LIC and LMIC (World Bank Classification). Studies that tested gastroenteritis cases and/or asymptomatic controls for norovirus by reverse transcription-polymerase chain reaction (RT-PCR) were included. Sixty-four studies, the majority on children <5 years of age, were identified, and 14% (95% confidence interval; CI 14–15, 5158/36,288) of the gastroenteritis patients and 8% (95% CI 7–9, 423/5310) of healthy controls tested positive for norovirus. In LMIC, norovirus was detected in 15% (95% CI 15–16) of cases and 8% (95% CI 8–10) of healthy controls. In LIC, 11% (95% CI 10–12) of symptomatic cases and 9% (95% CI 8–10) of asymptomatic controls were norovirus positive. Norovirus genogroup II predominated overall. GII.4 was the predominant genotype in all settings, followed by GII.3 and GII.6. The most prevalent GI strain was GI.3. Norovirus causes a significant amount of gastroenteritis in low-resource countries, albeit with high levels of asymptomatic infection in LIC and a high prevalence of coinfections.
Assessing the Effects of Rainfall Intensity and Hydraulic Conductivity on Riverbank Stability
Authors: Duong Toan Thi , Do Duc Minh , Yasuhara Kazuya
Published: April 2019

Riverbank failure often occurs in the rainy season, with effects from some main processes such as rainfall infiltration, the fluctuation of the river water level and groundwater table, and the deformation of transient seepage. This paper has the objective of clarifying the effects of soil hydraulic conductivity and rainfall intensity on riverbank stability using numerical analysis with the GeoSlope program. The initial saturation condition is first indicated as the main factor affecting riverbank stability. Analyzing high-saturation conditions, the obtained result can be used to build an understanding of the mechanics of riverbank stability and the effect of both the rainfall intensity and soil hydraulic conductivity. Firstly, the rainfall intensity is lower than the soil hydraulic conductivity; the factor of safety (FOS) reduces with changes in the groundwater table, which is a result of rainwater infiltration and unsteady state flow through the unsaturated soil. Secondly, the rainfall intensity is slightly higher than the soil hydraulic conductivity, the groundwater table rises slowly, and the FOS decreases with both changes in the wetting front and groundwater table. Thirdly, the rainfall intensity is much higher than the soil hydraulic conductivity, and the FOS decreases dominantly by the wetting front and pond loading area. Finally, in cases with no pond, the FOS reduces when the rainfall intensity is lower than hydraulic conductivity. With low hydraulic conductivity, the wetting front is on a shallow surface and descends very slowly. The decreasing of FOS is only due to transient seepage changes of the unsaturated soil properties by losing soil suction and shear strength. These obtained results not only build a clearer understanding of the filtration mechanics but also provide a helpful reference for riverbank protection.
Watershed Characterization and Hydrograph Recession Analysis: A Comparative Look at a Karst vs. Non-Karst Watershed and Implications for Groundwater Resources in Gaolan River Basin, Southern China
Authors: Jakada Hamza , Chen Zhihua , Luo Mingming , Zhou Hong , Wang Zejun , Habib Mukhtar
Published: April 2019

Karst watersheds are often treated as non-karst watersheds that can lead to several hazards. Hence, how do karst watersheds differ from non-karst watersheds and what are the effects of karstification on groundwater availability and quality? In this study, we contrast between a karst and non-karst watershed by elucidating their geomorphological peculiarities and potential impact on spatio-temporal availability and quality of groundwater. GIS morphometric mapping and hydrograph recession analysis are applied to map the watershed features and estimate hydrograph recession coefficient to define the groundwater drainage characteristics as well as the influence of karst drainage attributes (KDA). Furthermore, we characterize streamflow components based on the hydrograph recession limbs (segments) and infer their contributing geomorphological factors. Results show that the karst watershed has higher recession coefficients for successive recession limbs. Consequently, it drains larger volumes of groundwater primarily due to the KDAs, which transmit interflow and groundwater flow more rapidly through large cavities to springs as well as stream channels. The KDAs generate what we term karst drainage flow (KDF), defined by the second recession limb which has high recession coefficient as the first limb (overland flow) and strongly contrasts with the non-karst watershed from visual and ANOVA analysis. The effect is that karst aquifer yield over time is significantly lower and highly exposed to pollution compared to the non-karst aquifer. Consequently, sustainable water management practices should be adopted to ensure the availability and safety of groundwater reserves.
Apparent Friction Coefficient Used for Flow Calculation in Straight Compound Channels
Authors: Kubrak Elżbieta , Kubrak Janusz , Kozioł Adam , Kiczko Adam , Krukowski Marcin
Published: April 2019

Water flow in channels with a compound cross-section involves an exchange of water mass and momentum between the slower flowing water in the floodplains and the faster water in the main channel. This process is called the streams interaction. As a result, the water velocity in the main channel decreases, and at the same time the velocity and depth of flow increase in the part of the floodplains adjacent to the main channel. Diversification of the surface roughness of the main channel and floodplains significantly affects the form of interactions. The results of laboratory experiments were used to characterize the influence of interactions on the discharge capacity of the channel with diversified roughness. The reduction in velocity of the main channel caused by the stream interactions is described with the apparent friction coefficients introduced at the boundary between the main channel and the floodplain. The obtained values of resistance coefficients, supplemented with the values from experiments reported in the literature, were used to establish a relationship useful in assessing the discharge capacity of such channels.
The methodological structure of a language A to language B translation textbook
Authors: Yermolovich Dmitry
Published: April 2019

The paper is based on the author’s experience of writing a Russian-English translation textbook and looks into the methodology of teaching students to translate into their non-mother tongue (language B). It is argued that a textbook delivering a course on general, rather than specialized, translation should move away from the popular format of text samples followed by glossaries and comments. Instead, the primary focus should be made on the utterance as the principal unit of translation. Utterances need to be analysed in terms of the situations which they reflect and their semantic class components (objects, events, abstracts, and relations). This approach, termed semantic-situational, can help make the learning and teaching of Language A to Language B translation more consistent and streamlined.
Lokalitas Konten dalam Visual Kaos Cak-Cuk Surabaya
Authors: Bangsawan Arjuna
Published: April 2019

In the realm of fashion, t-shirt has a basic function in man dressed as a complement. As it grows a shift in the value of the function t-shirts. In addition to functioning as a complement to dress, t-shirts can be used as a medium of communication, conveys criticism, existence, identity portrayal, as well as a means of identity and promotion. Kaos Cak Cuk Surabaya is one of the local T-shirt original regional Surabaya Suroboyoan consistent use in displaying visual culture. Through the language of visual pun and parody are blasted with locality Surabaya, Surabaya Cak Cuk in her locality brings humor and antics.
STUDI ANALISA DATA STORAGE DENGAN MENGGUNAKAN SISTEM NAS-DAS-SAN
Authors: Putra Budiya Surya , Pattiasina Timothy John
Published: April 2019

Teknologi storage (penyimpanan) berkembang cukup pesat. Sampai saat ini, begitu banyak teknologi storage yang tersedia, dengan segala macam keunggulan dan keterbatasan. Di antara teknologi storage yang telah dikenal adalah DAS (Direct Attached Storage), NAS (Network Attached Storage), dan SAN (Storage Area Network).

Tujuan penelitian makalah ini, untuk memahami cara kerja data data storage dan memahami kelebihan menggunakan sistem NAS, DAS, SAN.

Hasil penelitian membuktikan bahwa terdapat aspek-aspek tertentu yang harus dipertimbangkan dalam pemilihan penagaman data pada sistem penyimpanan data di dalam suatu jaringan komputer.
STUDI DAN IMPLEMENTASI STEGANOGRAFI METODE ALGORITMA DAN TRANSFORMASI PADA CITRA JPEG
Authors: Pattiasina Timothy John
Published: April 2019

Steganografi adalah seni dan ilmu menulis atau menyemhunyikan pesan tersembunyi dengan suatu cara sehingga selain si pengirim dan si penerima, tidak ada seorangpun yang mengetahui atau menyadari bahwa ada suatu pesan rahasia. lstilah steganografi termasuk penyemhunyian data digital dalam komputer Ada beberapa metode steganografi, salah satunya adalah metode Algorithms and Transformation. Metode menyembunyikan data dalam fungsi matematika yang disebut algoritma compression. Dua fungsi tersebut adalah Discrete Cosine Transformation (DCT) dan Wavelet Transformation. Fungsi DCT dan Wavelet yaitu untuk mentransformasikan data dari satu tempat (domain) ke tempat (domain) yang lain. Fungsi DCT yaitu mentransformasi data dari tempat spatial (spatial domain) ke tempat fiekuensi (frequency domain).
Sistem Pendukung Keputusan Rekomendasi Pemilihan Laptop Menggunakan Fuzzy Tahani
Authors: Setyoadi Eddy Triswanto , Widhiyanti Kathryn
Published: April 2019

Dalam pembelian laptop banyak hal yang bisa dijadikan parameter penilaian untuk mendukung suatu keputusan. Dalam hal ini, seseorang bisa memiliki parameter yang berbeda dengan orang lainnya. Terdapat permasalahan dimana seseorang rumit dalam menentukan laptop mana yang akan dipilihnya. Banyaknya spesifikasi, harga, dan tipe laptop yang bervariatif membuat pembeli bingung untuk menentukan pilihannya. Metode Fuzzy Tahani pada sebuah sistem pendukung keputusan bisa memberikan solusi terhadap permasalahan tersebut. Dengan memberikan input kriteria laptop pada sistem oleh pengguna, sehingga pada proses akhirnya, pengguna akan mendapatkan daftar laptop yang direkomendasikan berdasarkan kriteria masukannya.
Studi Pembentukan Huruf Font Dengan Kurva Bezier
Authors: Haryono Agung
Published: April 2019

Kurva bezier (baca : bes-ee-ay) merupakan sebuah kurfa parametrik yang sering diterapkan pada komputer grafis dan dalam bidang-bidang berhubungan lainnya. Kurva bezier sangat dikenal karena kemampuannya untuk menghasilkan kurva yang halus.

Penelitian ini bertujuan untuk mengetahui peran kurva bezier dalam pembentukan huruf-huruf Font dan mencari perbedaan peran kurva bezier dalam pembentukan Font TrueType dan Font PostScript.

Sedangkan manfaat dari penelitian ini adalah mengenalkan pada masyarakat cara kerja dan peran kurva bezier dalam pembentukan huruf-huruf Font.

Font TrueType dan font PostScript merupakan font vektor yang sama-sama menggunakan kurva bezier untuk menggambarkan kontur-kontur glyph. Font TrueType menggunakan kurva bezier kuadratik yaitu kurva bezier berordo 2, Font PostScript menggunakan kurva bezier kubik yaitu kurva bezier berordo 3.
Awareness Penggunaan dan Pemanfaatan Public Cloud Storage di Indonesia
Authors: Sundoro David
Published: April 2019

Semakin besarnya tingkat urgensi dari data serta tingginya mobilitas pengguna internet pada masa sekarang menuntut dukungan dari tempat penyimpanan data atau storage. Teknologi informasi pada perkembangannya menawarkan layanan cloud storage yang bisa dimanfaatkan oleh pengguna internet sebagai tempat penyimpanan data yang fleksibel untuk diakses dari mana saja oleh pengguna, selama akses ke internet tersedia. Penelitian ini bertujuan untuk melihat tingkat awareness dari pengguna internet di Indonesia, didalam menggunakan dan memanfaatkan public cloud storage tidak berbayar (gratis) yang disediakan oleh beberapa penyedia jasa cloud storage.
Perancangan dan Pembuatan Aplikasi Untuk Mengukur Efektivitas Produksi Berdasarkan Permintaan Pelanggan Dengan Metode Radial Basis Function
Authors: Sujatmiko Bagus Sayekti , Andika Hermawan , Pattiasina Timothy John
Published: April 2019

Model jaringan saraf fungsi radial basis (Radial Basis Function = RBF) adalah model jaringan saraf yang memiliki unit lapisan tersembunyi, dimana fungsi aktivasinya menggunakan fungsi basis (Gaussian) dan fungsi linear pada lapisan output. Untuk mendapatkan hasil fungsi RBF terbaik, diperlukan kombinasi yang tepat antara jumlah input data dan jumlah node (clustering). Penelitian ini dilakukan diperusahaan kimia yang bergerak dibidang produksi deterjen. Data yang akan diproses diperoleh dari transaksi perusahaan yang sudah dilakukan selama 2 tahun sebelumnya untuk dijadikan sebagai data training dan data testing. Pada data training dilakukan pengelompokan data dan pencarian nilai sentroid menggunakan metode K-Means kemudian dilanjutkan perhitungan RBF sampai menghasilkan nilai bobot training. Hasil bobot training digunakan untuk proses pengujian data testing hingga menghasilkan suatu prediksi produksi berupa nilai similarity. Nilai similarity tertinggi akan digunakan untuk perhitungan prediksi produksi pada aplikasi user. Hasil dari penelitian ini berupa nilai prediksi produksi yang akan digunakan untuk membantu proses pengambilan keputusan dan pemenuhan permintaan pelanggan. Dari percobaan yang sudah dilakukan diperoleh akurasi nilai similarity diatas 90 %.
Perbandingan Metode Web Scraping Menggunakan CSS Selector dan Xpath Selector
Authors: Rizaldi Taufiq , Putranto Hermawan Arief
Published: April 2019

Pemanfaatan data atau berita yang tersebar di internet untuk meningkatkan peluang keberhasilan dalam sebuah usaha melalui analisa trend pasar adalah hal yang sangat umum pada saat ini. Penjelajahan Web (Crawl) dan ekstraksi data dari web (Scraping) menjadi salah satu hal yang penting, agar tidak terjadi data yang kurang sempurna, dan data yang diterima adalah data yang paling baru. CSS Selector dan Xpath merupakan salah satu metode yang umum digunakan dalam melakukan proses crawling. Terdapat perbedaan dari jumlah data yang terambil, besar file output dan waktu pemrosesan dari kedua metode tersebut, dimana Xpath memiliki keunggulan pada jumlah data yang terambil dan waktu pemrosesnya yang berakibat pada ukuran file output yang lebih besar. Sedangkan untuk penggunaan memori pada kedua metode pada proses crawling tidak memiliki perbedaan yang signifikan.
Seleksi Atribut Menggunakan Information Gain Untuk Clustering Penduduk Miskin Dengan Validity Index Xie Beni
Authors: Astuti Femi Dwi
Published: April 2019

Di wilayah Kecamatan Bantul, seorang warga disebut sebagai keluarga miskin berdasarkan beberapa aspek seperti aspek pangan, sandang, papan, penghasilan, kesehatan, pendidikan, kekayaan, air bersih, listrik maupun jumlah jiwa. Aspek-aspek tersebut akan digunakan sebagai atribut dalam proses clustering. Masing-masing atribut memiliki nilai yang akan diolah. Penelitian ini dikerjakan menggunakan seleksi atribut information gain sebelum proses clustering untuk melihat atribut mana yang sebenarnya berpengaruh dan tidak, sehingga hanya atribut yang berpengaruh saja yang akan digunakan, metode Fuzzy C-Means untuk clustering penduduk miskin dan Xie Beni untuk menentukan jumlah klaster terbaik. Hasil penelitian menunjukkan penggunaan information gain dengan threshold 0.0001 untuk clustering dengan menghilangkan atribut penghasilan memiliki hasil cluster yang sama dengan menggunakan atribut penghasilan. Pengujian terhadap 23, 500, 1000 dan 1313 untuk jumlah cluster 2, 3, 4, 5, 6 dan 7 menunjukkan bahwa nilai dari Xie-Beni Index terkecil adalah 5 dengan nilai 0,1343, sehingga cluster yang paling optimal adalah 5.
Analisa dan Perancangan Website Media Sosial Untuk Komunitas Tari Dengan Metode Prototyping
Authors: Ammash Al Hadid , Sutjiadi Raymond , Pattiasina Timothy John
Published: April 2019

Informasi adalah sesuatu yang selalu dibutuhkan ketika setiap pengguna internet melakukan browsing. Informasi tersebut bisa berupa artikel, musik, foto, dan juga video. Dalam dunia tari, informasi sangat mempunyai pengaruh yang besar dalam berkembangnya setiap penari. Website adalah salah satu cara penari untuk mendapatkan informasi berupa konten video atau artikel yang dapat mereka akses dan digunakan untuk bertukar informasi dengan penari yang lain baik lokal atau internasional. Dengan adanya website yang mempunyai ruang lingkup lebih spesifik akan membantu untuk penari tersebut lebih efisien dalam saling bertukar informasi. Website dengan berbasis media sosial akan sangat membantu dalam melakukan komunikasi kepada setiap pengguna di dalamnya. Dalam penilitian ini akan menggunakan metode prototyping, supaya website yang dibuat akan lebih user friendly karena perancangan website akan melibatkan calon pengguna dalam menentukan desain dan fitur yang akan digunakan.
Analisis dan Perancangan Sistem Informasi Produksi Pada UMKM Kerupuk Sidoarjo
Authors: Asmawati Endah , Absari Dhiani T , Herlambang Arif , Haryono Yon
Published: April 2019

Usaha Mikro Kecil dan Menengah (UMKM) merupakah salah satu unit usaha yang berperan cukup penting pada sektor perekonomian Indonesia. Banyaknya UMKM yang tetap eksis meskipun perekonomian nasional sedang lesu membuat UMKM menjadi unit bisnis yang dapat mengurangi pengangguran. Penelitian ini bertujuan untuk mengetahui permasalahan UMKM dalam melakukan pencatatan adminstrasi. Untuk itu dilakukan pendekatan kualitatif dengan mengambil sampel sebanyak 12 UMKM yang memproduksi kerupuk mentah di Kecamatan Krembung. Teknik pengumpulan data menggunakan metode wawancara terstruktur. Berdasarkan hasil wawancara diketahui bahwa sebagian UMKM tidak melakukan pencatatan administrasi dengan baik, sehingga UMKM sering keliru pada proses produksi. UMKM berkeinginan untuk dapat melakukan pencatatan adminstrasi yang baik. Untuk itu dirancang sistem informasi produksi yang dapat dapat menyimpan data konsumen, dapat mencatat pesanan sekaligus melakukan pengecekan kemampuan produksi untuk pesanan tersebut. Selain itu dengan sistem yang baru pemilik dapat mengetahui jadwal produksi sesuai tanggal pengambilan, mengetahui stok barang (kerupuk) dan bahan baku, melihat detail pemesan (nama, asal daerah, tanggal pemesanan, tanggal pengambilan, jenis dan jumlah kerupuk), dan jumlah kelebihan kerupuk. Dengan sistem ini UMKM dapat melihat status pembayaran, apakah pelanggan sudah membayar lunas atau kurang bayar, jika kurang bayar akan terlihat berapa kekurangan yang harus dibayar pelanggan.
Sistem Prediksi Transaksi Nasabah Bank Swasta Memanfaatkan Fuzzy Time Interval Sequential Pattern Mining
Authors: Rahmawati Titasari , Supangat Supangat
Published: April 2019

Layanan perbankan saat ini memang dirancang sebagai salah satu cara untuk memuaskan para nasabah. Pelayanan operasional adalah pelayanan yang penting karena terjadi secara langsung. Kebutuhan seorang nasabah yang terjadi sewaktu-waktu sehingga bank harus siap dalam hal dana tunai. Transaksi yang terjadi pada sebuah bank tidak dapat diprediksi dengan kasat mata dikarenakan situasi dan kondisi perekonomian yang labil sehingga bank harus memperhatikan jumlah dana tunai yang tersedia. Oleh sebab itu perlu dibangun sebuah sistem prediksi yang dapat memprediksi transaksi nasabah guna untuk mengetahui pada saat momen apa, transaksi apa yang akan dilakukan serta dalam waktu atau tempo yang sebentar, sedang atau lama transaksi kedua akan dilakukan. Sistem ini menggunakan metode fuzzy time interval sequential pattern yang dapat memprediksi transaksi nasabah dikolaborasi dengan momen.
Sistem Kriptografi di Komputasi Awan Untuk Kebutuhan Data Medis
Authors: Louk Maya Hilda Lestari
Published: April 2019

Komputasi awan adalah sebuah metode komputasi yang sedang berkembang saat ini untuk berbagi data dan pemrosesan data baik secara terbuka/umum atau pribadi. Komputasi awan adalah jawaban atas lingkungan komputasi yang lebih efektif dan efisien. Hal itu akan mengurangi biaya komputasi dan tenaga ahli komputasi. Komputasi awan dapat digunakan tidak hanya untuk tujuan bisnis tetapi juga untuk tujuan medis/kesehatan yang akan digunakan oleh pasien, spesialis, apoteker, perawat, dokter, dan pegawai administrasi rumah sakit. Sebagai implikasi pada sisi yang lain, keamanan adalah isu penting di dalam Komputasi awan. Perlindungan privasi data dan kontrol penerimaan data adalah tantangan keamanan di dalam Komputasi awan. Penulisan ini secara singkat membuat sketsa penggunaan sistem Kriptografi untuk kebutuhan data medis menggunakan Komputasi awan, khususnya fungsi enkripsi ulang (re-enkripsi fungsional) "tag" dan "tanda" untuk melakukan akses data. Penulisan ini memberi solusi alternatif untuk keamanan data pada Komputasi awan berdasarkan layanan enkripsi dan dekripsi dengan re-enkripsi fungsional untuk kebutuhan data medis dan data pelayanan kesehatan. Data dapat diakses dari mana saja dan oleh siapa saja yang memiliki hak akses untuk mengakses data sesuai dengan kebijakan akses tersebut. Penulisan ini diusulkan dan terdiri dari pembahasan terhadap ide dari penggunaan Komputasi awan dan keamanan data pada data medis dan data pleayanan kesehatan.
Novel reversibly switchable wettability of superhydrophobic–superhydrophilic surfaces induced by charge injection and heating
Authors: Ye Xiangdong , Hou Junwen , Cai Dongbao
Published: April 2019

Reversibly switching wettability between superhydrophobicity and superhydrophilicity has attracted widespread interest because of its important applications. In this work, we propose a reversible superhydrophobic–superhydrophilic conversion induced by charge injection and heating. Different from the conventional electrowetting phenomenon caused by the accumulation of solid–liquid interfacial charges, we discovered a phenomenon where charge injection and accumulation at the solid surface results in a sharp increase in wettability. The wettability of a sprayed SiO2 nanoparticle coating on a glass slide was shown to change from superhydrophobic to superhydrophilic by charge injection and heating, and the superhydrophobicity was restored by heating, verifying a reversible superhydrophobic–superhydrophilic conversion. The influence of voltage, temperature, and time on the coating wettability and its durability under reversible conversion have been studied.
THE SIMULATION OF DYNAMIC SYSTEMS USING COMBINED MODELLING
Authors: Alzbutas R. , Janilionis V.
Published: April 2019

The new approach to the problems of dynamic systems simulation is proposed. The analytical and imitation modelling of non‐linear complex dynamic systems which comprise simulation of continuous and discrete processes with constant and variable parameters, are investigated. The aggregate mathematical modelling scheme [1] and the method of control sequences for discrete systems specification and simulation are used as well as the dynamic mathematical modelling scheme for continuous process formalization and modelling. According to them the investigated systems are presented as the set of interacting piecewise linear aggregates, which can include processes described with differential equations. The above mentioned approach is used in developing software for the construction and research of the models. The modelling of the dynamic systems’ control is also analyzed and developed software for the dynamic systems’ simulation is presented. It is related to the proposed combined modelling methodology. The developed dynamical simulation system ADPRO (Automatic Differentiation PROgram) extends applicability of the system SIMAS (SIMulation of the Aggregate Systems) [2] with dynamical simulation means realized with APL2 (A Programming Language 2) and based on automatic differentiation [3]. The created model of service process and its control can be used as a base for other models of wide class complex dynamics’ systems [4], the parts of which are described with differential equations.
TWO-GRID ITERATION METHOD FOR WEAKLY SINGULAR INTEGRAL EQUATIONS
Authors: Hakk K.
Published: April 2019

For the solution of weakly singular integral equations by the piecewise polynomial collocation method it is necessary to solve large linear systems. In the present paper a two‐grid iteration method for solving such systems is constructed and the convergence of this method is investigated.
ABOUT THE APPROXIMATE SOLUTION OF THE USUAL AND GENERALIZED HILBERT BOUNDARY VALUE PROBLEMS FOR ANALYTICAL FUNCTIONS
Authors: Kristalinskii V. R.
Published: April 2019

In this article the methods for obtaining the approximate solution of usual and generalized Hilbert boundary value problems are proposed. The method of solution of usual Hilbert boundary value problem is based on the theorem about the representation of the kernel of the corresponding integral equation by τ = t and on the earlier proposed method for the computation of the Cauchy‐type integrals. The method for approximate solution of the generalized boundary value problem is based on the method for computation of singular integral of the formproposed by the author. All methods are implemented with the Mathcad and Maple.
SOME ESTIMATES OF SPECIAL CLASSES OF INTEGRALS
Authors: Malyutina T. I.
Published: April 2019

We study the integrals fb a f(t) exp(i| ln rt|σ) dt and obtain asymptotic formula for these functions of non‐regular growth. This is a peculiar kind of the theory asymptotic expansions. In particular, we get asymptotic formulae for different entire functions of non‐regular growth. Asymptotic formulas for Levin‐Pfluger entire functions of completely regular growth are well‐known [1]. Our formulas allow to find limiting Azarin's [2] sets for some subharmonic functions. The kernel exp(i| ln rt|σ) contains arbitrary parameter σ > 0. The integrals for σ ∈(0, 1), σ = 1, σ > 1 essentially differ. Our arguments can apply to more general kernels. We give a new variant of the classic lemma of Riemann and Lebesgue from the theory of the transformation of Fourier.