bluuebunny/crossref_metadata_2025 huggingface dataset:
Variation in the syntax of the partitive structure
Authors: Stickney Helen , Mafrica Chelsea , Lippman Jordan
Published: July 2015

Proceedings of the 37th Annual Meeting of the Berkeley Linguistics Society (2013), pp. 330-343
When motion and location yield direction: The case of Mandarin
Authors: Tham Shiao Wei
Published: July 2015

Proceedings of the 37th Annual Meeting of the Berkeley Linguistics Society (2013), pp. 344-358
Alignment typology, reflexives, and reciprocals in Tsezic languages
Authors: Comrie Bernard , Forker Diana , Khalilova Zaira
Published: July 2015

Proceedings of the 37th Annual Meeting of the Berkeley Linguistics Society: Special Session on Languages of the Caucasus (2013), pp. 32-51
Proceedings of the 37th Annual Meeting of the Berkeley Linguistics Society: Special Session on Languages of the Caucasus
Authors: Cathcart (ed.) Chundra , Kang (ed.) Shinae , Sandy (ed.) Clare S.
Published: July 2015

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Levels of Structure Within the Paragraph
Authors: Hinds John
Published: July 2015

Proceedings of the 4th Annual Meeting of the Berkeley Linguistics Society (1978), pp. 598-609
Linguistic Representation of Spatial and Temporal Orientation
Authors: Hill Clifford Alden
Published: July 2015

Proceedings of the 4th Annual Meeting of the Berkeley Linguistics Society (1978), pp. 524-538
Modern Greek Clitics: Placement, Order, and Function
Authors: Wanner Dieter
Published: July 2015

Proceedings of the 4th Annual Meeting of the Berkeley Linguistics Society (1978), pp. 268-282
Monophthong and Diphthong Relations: Internal Evidence
Authors: Grundt Alice Wyland
Published: July 2015

Proceedings of the 4th Annual Meeting of the Berkeley Linguistics Society (1978), pp. 418-426
Assessment of Patients with Takayasu Arteritis in Routine Practice with Indian Takayasu Clinical Activity Score
Authors: Alibaz-Oner Fatma , Aydin Sibel Z. , Akar Servet , Aksu Kenan , Kamali Sevil , Yucel Eftal , Karadag Omer , Ozer Huseyin , Kiraz Sedat , Onen Fatos , Inanc Murat , Keser Gokhan , Akkoc Nurullah , Direskeneli Haner
Published: July 2015

Objective.

To assess the Indian Takayasu Clinical Activity Score (ITAS2010) in followup of Takayasu arteritis (TA).

Methods.

ITAS2010 forms were filled in prospectively (n = 144). Clinical activity was assessed with physician’s global assessment (PGA) and criteria defined by Kerr,et al.

Results.

ITAS2010 was significantly higher in patients with active disease. Total agreement between ITAS2010 and PGA was 66.4%, and between ITAS2010 and Kerr,et alwas 82.8%. During followup, 14 of 15 patients showing vascular progression with imaging were categorized as having inactive disease according to ITAS2010.

Conclusion.

ITAS2010 was discriminatory for activity during the followup, but the agreement between PGA and ITAS2010 was moderate. Future work should include the incorporation of advanced vascular imaging and demonstration of ITAS2010 as a scalable measure and not simply a dichotomous measure of activity/flare versus remission.
An Internet-based Controlled Trial Aimed to Improve Osteoporosis Prevention among Chronic Glucocorticoid Users
Authors: Warriner Amy H. , Outman Ryan C. , Allison Jeroan J. , Curtis Jeffrey R. , Markward Nathan J. , Redden David T. , Safford Monika M. , Stanek Eric J. , Steinkellner Amy R. , Saag Kenneth G.
Published: July 2015

Objective.

To address the low prevention and treatment rates for those at risk of glucocorticoid-induced osteoporosis (GIOP), we evaluated the influence of a direct-to-patient, Internet-based educational video intervention using “storytelling” on rates of antiosteoporosis medication use among chronic glucocorticoid users who were members of an online pharmacy refill service.

Methods.

We identified members who refilled ≥ 5 mg/day of prednisone (or equivalent) for 90 contiguous days and had no GIOP therapy for ≥ 12 months. Using patient stories, we developed an online video addressing risk factors and treatment options, and delivered it to members refilling a glucocorticoid prescription. The intervention consisted of two 45-day “Video ON” periods, during which the video automatically appeared at the time of refill, and two 45-day “Video OFF” periods, during which there was no video. Members could also “self-initiate” watching the video by going to the video link. We used an interrupted time series design to evaluate the effectiveness of this intervention on GIOP prescription therapies over 6 months.

Results.

Among 3017 members (64.8%) exposed to the intervention, 59% had measurable video viewing time, of which 3% “self-initiated” the video. The GIOP prescription rate in the “Video ON” group was 2.9% versus 2.7% for the “Video OFF” group. There was a nonsignificant trend toward greater GIOP prescription in members who self-initiated the video versus automated viewing (5.7% vs 2.9%, p = 0.1).

Conclusion.

Among adults at high risk of GIOP, prescription rates were not significantly affected by an online educational video presented at the time of glucocorticoid refill. ClinicalTrials.gov Identifier: NCT01378689.
OpenFlow Virtual Appliance
Authors: Achumba Ifeyinwa Eucharia , Okafor Kennedy Chinedu , Ezeh Gloria N. , Diala Uchenna Hermes
Published: July 2015

Network forensics vis-a-vis cloud computing offerings can be leveraged to address the needs of enterprise-grade spyware solutions online. A modular, extensible cloud architecture with intrinsic support for efficient security monitoring is proposed and an implementation architecture which facilitates dynamic interface with OpenFlow hardware to create infinite flexibility in managing security decisions is presented. A forensic DataCenter model that integrates remote security monitoring using an intelligent Virtual Security Gateway in a cloud domain was developed as part of the work. An OpenFlow Virtual Appliance is proposed as a security hardware interface for thin clients connected to the Cloud Sypware Robot (CSR) server. The cloud ontology-Software as a Service (SaaS) model was used for the CSR application conveying several security benefits. The goal is to facilitate an open, service-based, online network forensics application that is transparently provisioned for users. The paper proposes a security foundation for next-generation enterprise-grade cloud computing.
Virtual Identification of Dwelling Characteristics Online for Analysis of Urban Resource Consumption
Authors: Saydi Maryam , Bishop Ian , Rajabifard Abbas
Published: July 2015

The impact of dwelling structure on residential energy and water consumption is important in urban resource management. This paper introduces Virtual Identification of Dwelling Characteristics Online (VIDCO) as a novel technique to assess dwelling characteristics. Using both aerial and street level views from Google mapping products, exterior dwelling characteristics were captured for 50 random dwellings in each of 40 Postal Areas. VIDCO saved the time and cost of travelling to the widely spread suburbs and provided data that could not be attained in-field. Three approaches to validity checking were used. First, comparison of dwelling type with data from Australian Bureau of Statistics (ABS) showed that outer suburb areas had higher agreement than inner city areas. Second, the homogeneity of the data was assessed to indicate whether the sampling rate was appropriate. The results were mixed. Third, the degree to which key variables -such as presence of swimming pools- affected residential energy and water demand, as determined by linear regression, was consistent with other studies.
PEER
Authors: Lorenzi David , Chun Soon Ae , Vaidya Jaideep , Shafiq Basit , Atluri Vijay , Adam Nabil R.
Published: July 2015

While government agencies, NGOs, and even commercial entities immediately swing into action to help out, in the case of large disasters, one of the biggest resources – citizens themselves – are underutilized. The rise of social media creates an opportunity for the citizen participation for disaster response management. By harnessing the power of citizen crowdsourcing, the government can have enhanced disaster situation awareness and utilize resources provided by citizen volunteers, resulting in more effective disaster responses. In this paper, the prototype Public Engagement in Emergency Response (PEER) framework is presented. It provides a comprehensive online and mobile crowdsourcing platform for situation reporting and resource volunteering. Events are described that transpired in the aftermath of superstorm Sandy, which demonstrate the benefits of using the PEER framework in a major disaster situation. Also described is how it can alleviate some of the issues associated with the crowdsourcing responses such as fraud.
Integration of Legal Aspects in 3D Cadastral Systems
Authors: El-Mekawy Mohamed Sobaih Aly , Paasch Jesper M. , Paulsson Jenny
Published: July 2015

This article continues a research on the feasibility of BIM for 3D cadastre in unified building models, presented in . It describes problems and solutions concerning interaction between BIM and the registration and visualisation of legal 3D property information. BIM and legal 3D property are two seemingly different domains, and there is a lack of BIM-3D property research in relation to technical and registration issues. The article therefore focuses on possibilities and difficulties of addressing legal interests (i.e. rights, restrictions and responsibilities) in land. A Swedish case study is used to describe the use of 3D property formation and registration in Sweden, and how it might be possible to achieve a more integrated, standard based registration of legal boundaries and physical buildings. The results emphasize how BIM and 3D property domains can interact to serve the needs for effective information handling by e.g. importing 3D cadastral boundaries into BIM as basis for decision-making or to use BIM as input in the 3D cadastral formation process.
IT Enabled Organisational Agility
Authors: Mao Yunshi , Quan Jing
Published: July 2015

This paper examines the role of information technology (IT) in enabling organisational agility. The authors focus on two IT capabilities, IT exploration and IT exploitation. On the basis of conceptualisation of the capability lifecycle and a hierarchy of dynamic capabilities, the authors establish a theoretical linkage between lower-order capability and higher-order capability, i.e., IT exploration capability to IT exploitation capability to organisational agility. Using the partial least square approach, the authors empirically test the proposed relationships using data from 289 manufacturers in the Pearl River Delta region of Guangdong province, People's Republic of China. Our results suggest the positive effects of IT exploration and exploitation capabilities on customer, operational and partner agilities. In addition, the authors find that IT exploitation capability mediates the relationship between IT exploration capability and organisational agility. On the basis of our findings, implications for theory and practice as well as future research opportunities are discussed.
Preliminary Study of Bio-Impedance Based Sensor Using Organic Polymer Membrane for Identification of Pork and Beef
Authors: Purnama Budi , Fajarini Arfiah Nur , Masykur Abu , Wibowo Atmanto Heru
Published: July 2015

Bio-impedance based sensor using organic polymer-membrane was presented in this paper. The Ca-alginate with glycerol as plasticizer used in the experiments was fabricated by slip casting method on a glass substrates. After atmospheric heating treatment of edible films at 60°C for 24 hours, the films-membranes of 50 mm were obtained. Bio-impedance characterizations were carried out by LCR meter at room temperature. The experiment results showed that the sensor finely operated at low frequency i.e. less than 40 kHz. Response of the sensor increased with the increase of samples mass and became constant after a critical mass. Finally, bio-impedance responses of beef and pork were clearly indicated by a different magnitude that it is possible to apply the films-membranes as bio-sensor applications.
Development of Simple Digital Image Acquisition System for an Accurate Quantification of Corneal Arcus Formation
Authors: Nasution Aulia , Cahya Deni Indra
Published: July 2015

Corneal Arcusis a circular ring of lipid secretion that is deposited in the periphery of cornea. This ring is normally found in elderly people (a.k.a.arcus senilis) or even in younger ones suffering from metabolic syndrom (a.k.a.arcus juvenilis). Many researchers have confirmed that the ring have diagnostic values, i.e. as predictor for coronary artery diseases and lipid stratification. Efforts to develop flexible, low-cost, but also an accurate acquisition system will be described. The system is constructed from commercially available plastic welding google, equipped with a Logitec C525 webcam and LEDs lighting system powered though USB cable. Steps of calibration procedures were then implemented, in order to produce the equally-magnified as well as calibrated preprocessed images for further accurate quantifying steps.
Development of Ultrasonic Based Air Bubble Detection and Safety System for Hemodialysis Machine to Prevent Embolism
Authors: Busono Pratondo
Published: July 2015

Hemodialysis is one of the treatment methods for the patients with end stage renal disease. It is conducted through the use of artificial kidney or dialyzer, located outside of the human body. During the hemodialysis therapy, small air bubbles may infiltrate through the blood tubing and coalesce to perform the larger bubble which can be harmfull for the patient if entering the patient’s blood circulatory system. The objective of this work is to develop an ultrasonic based air bubble detection system as well as the safety system, mainly the electronic system, for hemodialysis machine application. The safety systems consits an electronic for activating visual and sound alarms, and tube clamp. It is used for preventing the embolism during the hemodialysis therapy. The research method covers the conceptual design, detail design, prototyping and performance testing for both hardware and software. The hardware system consists of air detector module, analog circuitry which consists of transmitter and receiver, digital circuitry with DSP based SOM (system on module) and I/O interface. The software system has two main functions. It is for controlling the hardware and processing the signals digitally. The integration between the hardware and the software making the system be able to detect the presence of air bubble. In addition, the software had possess the capability for triggering a tube clamp as well as activating visual and audio alarms. The tubing clamp was used to stop the fluid flow in the blood tubing and prevent an air bubble from entering the patient circulatory system. The validation test was conducted to verify the functionality of the system. For testing purposes, an experimental flow loop was constructed. This loop consits of peristaltic pump, bubble injector, tube clamp, air flow meter, liquid flow meter, and bubble detector. Several test runs by using simulated blood (Dextran 70 solution) were performed. To test the performance of bubble detection system, comparison between measurement of PWM signals conducted using the DSP and oscilloscope was presented in this work. It shows that error procentage between two types of measurement is less than 5%.
Elaboration of Low Field and Room Temperature Magnetoresistive Sensor of La0.7Sr0.3MnO3 Nanoparticles Synthesized by Sol-Gel Method
Authors: Naa Christian Fredy , Fasquelle Didier , Mascot Manuel , Djamal Mitra
Published: July 2015

Low field and room temperature operation range are two critical requirements for magnetic sensors. In this paper, nanoparticles of La0.7Sr0.3MnO3 (LSMO) were elaborated to fulfill these requirements. La0.7Sr0.3MnO3 nanoparticles were synthesized using sol-gel method. The physical properties of LSMO were examined by X-Ray diffraction and Scanning Electron Microscope. The ferromagnetic nature of LSMO samples was confirmed by magnetization measurements. Nanoparticles were pressed in shape of pellets and sintered at different temperatures of 900°C, 1000°C, 1100°C and 1200°C. Magnetoresistive measurements were taken at room temperature with magnetic field (μH) in range ±110 mT. The experimental results show maximum magnetoresistive ratio and sensitivity of 1.3% and 0.023%/mT respectively for sample sintered at 1000°C. Other sensor characteristics namely hysteresis error, response time and noise measurement were also given.
Terahertz Signal Measurement on a Chiral Metamaterial Using Terahertz Emission Spectroscopy
Authors: Partini Juliasih , Abraha Kamsul , Hermanto Arief , Tomita Satoshi , Takahiro Matsui
Published: July 2015

Terahertz Signal generated from chiral metamaterial due to the second order non-linear process has been observed. Chiral metamaterial used in this research have a periodic square pattern with different depth on a silver film and was fabricated by Focused Ion Beam System. Terahertz emission spectroscopy has been conducted using two amplified 100 fs laser pulses with a central wavelength of 800 nm. The emission will emerge due to an optical rectification process as a result of an intense femtosecond laser pulses radiation on a chiral metamaterial sample. The measurement result clearly shows that the terahertz signal is emitted at 2 THz frequency and sufficiently fit with a square of laser power, which is consistent with an expected optical rectification process.
An Accurate Smoothness Indicator for Shallow Water Flows along Channels with Varying Width
Authors: Mungkasi Sudi
Published: July 2015

We extend the application of numerical entropy production, as a smoothness indicator, from conservation laws to balance laws. We aim to indicate the smoothness of solutions to the shallow water equations involving varying width, which are a system of balance laws. The numerical entropy production appears to be accurate to detect discontinuities. As a numerical test, a radial dam break is considered. We assume that there is a higher level of water inside a radial dam than water outside the dam wall. If the radial dam is totally broken, then water flows from inside to outside. The flow results in a solution having shock discontinuities. Finding the positions of the discontinuities is our interest. They are the positions where numerical solutions, such as those generated by a finite volume method, decrease their accuracy. Detecting the position of the discontinuity can help in the improvement of the numerical solution in terms of its accuracy. We obtain that the numerical entropy production is simple to implement but give an accurate detection. The discontinuity of the stage (free water surface) is clearly detected by large values of the numerical entropy production as the smoothness indicator.
Combination of Active and Passive Seismic Analyses for Embankment Characterization
Authors: Widyaningrum Yekti , Sungkono  , Husein Alwi , Santosa Bagus Jaya , Bahri Ayi S.
Published: July 2015

Rayleigh wave dispersion is intensively used to determine near surface of shear wave velocity (Vs). The method has been known as non-invasive techniques which is costly effective and efficient to characterize subsurface. Acquisition of the Rayleigh wave can be approached in two ways, i.e. passive and active. Passive seismic is accurate to estimate dispersion curve in low frequency, although it is not accurate for high frequency. While active seismic is vice versa of passive seismic. The high frequency of Rayleigh wave dispersion reflects to near surface and vice versa. Therefore, we used the combination of both passive and active seismic method to overcome the limitations of each method. The Vs which is resulted by inversion of the combining data gives accurate model if compared to log and standard penetration test (N-SPT) data. Further, the approach has been used to characterize LUSI (Lumpur Sidoarjo) embankments. The result shows that embankment material (0-12 m) has higher Vs than that lower embankment material.
Determining Contact Angle and Spreading Velocity of a Droplet Impacted Hot Solid Surface
Authors: Mitrakusuma Windy Hermawan , Deendarlianto  , Kamal Samsul , Indarto  , Nuryadi M. , Rustandi Rudi
Published: July 2015

Spray cooling is a method to lower the solid surface temperature by splashing droplets. The evaporation of droplet will take the heat from solid surface. One of the factors that contributes to the evaporation rate and droplet spreads on the surface is the wettability of fluid on surface. Contact angle is a parameter in categorizing the wettability of fluid at a solid surface. Many methods have been developed to measure the contact angle on solid surface. This paper will explain how to measure the contact angle by analyzing the image taken when droplet fluid attached to a surface. The method use MATLAB codes as tools for processing image and compute the result. There are four steps in processing an image of droplet on a surface: convert image to binary image, detect the boundary of the surface, determine the correlation of x-y pixel, and take the tangent of a line at the outer point of contact between fluid and surface. Validation is taken by comparing the result with “standard image” with various resolutions. This method also explains droplet dynamics when impacting a hot surface.
In Situ Measurement of Thermal Resistance of Building Envelope at the Residential Occupancy in Indonesia
Authors: Sujatmiko Wahyu , Dipojono Hermawan Kresno , Nugroho Soelami F.X. , Soegijanto
Published: July 2015

Abstract. This paper presents the measurement results of three building wall materials which are commonly used for residential housings in Indonesia, namely clay brick, batako (concrete brick), and precast concrete. In-situ measurement of the steady state thermal flow (heat flux) at building walls (envelopes) is conducted in order to determine the thermal resistance of building wall according to ASTM C1155. The results show that all three building materials having a thermal resistance values are far below the energy conservation provisions of ASHRAE 90.1 and especially when compared to the provision of high performance green building ASHRAE 189.1 It is found that precast concrete has higher thermal resistance (or has lower thermal conductivity) than that of other two materials, hence a better compliance to the ASHRAE standards.
Quantifiying the Influence of Moving Artifact on the Determination of Pulse Rate Variability (PRV) from the Pulse Oximetry (SpO2) Signal Measurements
Authors: Sumber  , Nasution Aulia
Published: July 2015

Determination of Heart Rate Variability (HRV) derived from the Pulse Rate Variability (PRV) of the SpO2 signals measurement can be used to monitor cardiac activity. One disadvantage of the use of SpO2 probe is due to existence unavoidable movement artifacts. These artifacts tend to reduce the accuracy of PRV determination. In order to quantify the influence of moving artifacts on the measured SpO2 signals, the Short-time Fourier Transform (STFT) method is used and this has not been done in previous studies. This method is regarded to be suitable since the artifacts only occurs momentarily, i.e. as the finger moves. Three modes of finger movements were simulated, in addition to the still finger as a control, i.e. in direction of up-down, left-right, and rotating one. Contributing spectra from each of these movements will be recognized, and suitable filtering schemes are then being applied to suppress the influence of these moving artifacts. Parallelly measurements using three-leads ECG were also done to determine the HRV for each of the finger movements condition. Results show that by implementing filtering scheme to each mode of finger movements may reduce the error rate in HRV determination from SpO2 measurements, i.e. from 6 - 25 % (without filtering) to be only 0 - 1.56 %. Meanwhile measurements both HRV and PRV under still finger show only 0-3.33 % difference for each of data groups.
Rapid Discrimination of Indonesian Herbal Medicines by Using Electronic Nose Based on Array of Commercial Gas Sensors
Authors: Hardoyono Fajar , Triyana Kuwat , Iswanto Bambang Heru
Published: July 2015

The aim of this study is to discriminate herbal medicines (here after referred to as herbals) by an electronic nose (e-nose) based on an array of eight commercially gas sensors and multivariate statistical analyses. Seven kinds of herbal essential oils purchased from local market in Yogyakarta Indonesia, including zingiberofficinale (ZO), kaempferiagalanga (KG), curcuma longa (CL), curcuma zedoaria (CZ), languasgalanga (LG), pogostemoncablin (PO), and curcuma xanthorrizharoxb (CX) were measured by using this e-nose consecutively. Due to the use of dynamic headspace in this e-nose, data for one cycle (sampling and purging) were recorded every five second for 10 cycles. Each kind of herbals was analyzed for five replications and relative amplitude of the responses was extracted as a feature. The statistical analyses of principal component analysis (PCA) and cluster analysis (CA) were used for discriminating samples. The PCA score plot shows that these 35 essential oil samples were separated into 7 groups based on similarity of patterns. The first two components, PC1 and PC2, capture 96.2% of data variance. Meanwhile, by using 80% similarity, the CA clusters 7 herbals into 3 classes. In this case, the first class consists of ZO and CZ and the second class consists of KG, CL, LG and CX, while the PO sample is clustered in the third class. These classes need to be validated using a standard analytical instrument such as GC/MS. The technique shows some advantages including easy in operation because of without any sample preparation, rapid detection, and good repeatability.
Seepage Monitoring of an Embankment Dam Using Resistivity Method: A Case Study of LUSI Mud Volcano P.79 - P.82 Embankment
Authors: Husein Alwi , Santosa Bagus Jaya , Bahri Ayi Syaeful
Published: July 2015

Since the Lusi Mud volcano erupts in Sidoarjo, East Java, on May 2006, soil embankments have been built to keep hot mud within the ponds. Unfortunately, since the embankments were sitting on a poorly weak ground, land subsidence intensively occurred around the embankments. These subsidences are mainly caused by water seepage penetrating the embankment. To observe the part of the embankment that is vulnerable to water seepage, DC Resistivity method, being a non-destructive and versatile method, is used to monitor the subsurface condition of the embankment. P.79 - P.82 embankment, which has collapsed on December 2010 is highlighted in this study because it has the lowest height of all part the embankment, directly adjacent with water from the mud volcano in the inside and field crop on the outside. The research will show the fluctuating results of the water seepage in the embankment during the timeline of February 2012 - October 2013 which, unlike the result of another area, is highly affected by the water level at each measurement. The embankment height during each DC Resistivity measurement is also measured to compare the subsurface result with the condition on the surface. The resistivity subsurface cross section shows increasing water seepage in each measurement (February 2012, July 2012 and October 2013). Alarming seepage level displayed in December 2012 which is presumably triggered by the increase of water level during rainy season is also followed by cracks occurred in the surface.
The Best Mother Wavelet for Stock Prediction Using Adaplet Method
Authors: Putra Agfianto Eko , Hasanah Nida Ul , Atmaji Catur
Published: July 2015

It has been determined the best mother wavelet for stock prediction of SONY 2006 and BNI 2012 based on the Adaplet Method (The Adaptive Filter which is use wavelet as initial coefficients). The Mother Wavelets, which is used, are Coiflet 1-5, Daubechies 1-5, and Symlet 1-5. The prediction analysis includes overshoot, autocorrelation error and data pattern conformity, three days prediction, and segmentation. According to the overshoot analysis, it shown that for all the data, the overshoot at the beginning of data increased as its wavelet level increased. While using Daubechies 1 and Symlet 1 produced smallest overshoot among other wavelets (112.2%). The autocorrelation error of data pattern prediction indicates conformity with the original data. As its wavelet level increased, the autocorrelation error pattern also ramped (near zero). Coiflet 5 and Daubechies 1 produced the smallest mean square error (MSE), which is equal to 0.0147; meanwhile, Coiflet 1 shows the best result with an average error of 0.001 in next three days prediction analysis. On the other hands, Symlet 3 shows the best MSE of 1.213. Symlet offers the best result, according to best wavelet sequence assessment of each method.
Crystallinity as a Non-Destructive Indicator of Wood Hardness at Standing Trees
Authors: Damayanti Ratih , Ilic Jugo , Ozarska Barbara , Pari Gustan , Vinden Peter
Published: July 2015

Wood hardness is an important property for flooring, furniture products and structural utilization. Currently wood hardness can only be measured using destructive testing. As there is no suitable method for predicting wood hardness from standing trees, developing a non-destructive technique to predict wood hardness from plantations trees would provide significant benefits for evaluating optimal silvicultural treatments, and for selecting trees for tree improvement programs. It is proposed initillay that a possible non-destructive test may be developed using „crystallinity“ characteristics (degree of crystallinity (DC), crystalite width (CW) and length (CL) and microfibril angle (MFA)) determined using X-Ray diffraction. The aim of this study was to test the feasibility of using crystallinity as a non-destructive indicator of wood hardness. Experimentally, nine trees were taken representing small, medium and large diameter from five-year old fast growing teak plantation forest in Ciampea, Bogor, Indonesia. Wood hardness and crystallinity were determined following a standard testing regime. The results showed that MFA was negatively related to all hardness directions. Crstallite width only influenced side hardness with negative correlation, while degree of crystallinity only affected the end-grain hardness with positive correlation. Different vertical positions within tree only influenced the end-grain hardness value, while different radial positions had no effect on wood hardness. The optimum sampling height was found to be 80 cm, 130 cm, and 100 cm for radial, tangential and end-grain hardness, respectively. The relationship was based on the height that provided the highest correlation with the whole tree hardness values. Proposed models involving density and „crystallinity“ for predicting wood hardness are presented. While the R2from the proposed models was mostly less than 0.50, however, the approach described provides a new way to predict wood hardness from 10 mm increment cores at standing trees.
Natural Produce Classification Using Computer Vision Based on Statistical Color Features and Derivative of Radius Function
Authors: Prabuwono Anton Satrio , Siswantoro Joko , Abdullah Azizi
Published: July 2015

In agriculture industry, natural produce classification is used in sorting, grading, measuring, and pricing. Currently, a lot of methods have been developed using computer vision to replace human expert in natural produce classification. However, some of the method used long features descriptor and complex classifier to obtain high classification rate. This paper proposes natural produce classification method using computer vision based on simple statistical color features and derivative of radius function. The k-nearest neighbors (k-NN) and artificial neural network (ANN) were used to classify the produce based on the extracted features. Preliminary experiment results show that the proposed method achieved best result with average classification accuracy of 99.875% using ANN classifier with nine nodes in hidden layer.
Design of Wireless Ambient Air Condition Monitoring System
Authors: Dwi Kuncoro C. Bambang , Falahuddin M. Anda , Ceceng A.J. , Aditya Maulana
Published: July 2015

In the early day of environment monitoring, the measurement is generally done through manual measurement from simple and analog instrument which suffer from the drawbacks like poor accuracy, need of human intervention, associated parallax errors and durability. The rapid development in electronic technology has made reliable integration of smart electronic sensors, processor, and communication device capable of monitoring environmental parameters more favorably. A system for ambient air condition monitoring has been developed as described in this paper. It is based on the embedded system, smart electronic sensor, commercial off-the-shelf (COTS) components, and the terminal monitor by the Graphical User Interface (GUI).
Designing a Telemetry System of Temperature and Soil Moisture for Irrigation Control
Authors: Boimau Infianto , Endarko
Published: July 2015

Water is the main requirement for the agricultural crops. However, improper amount of water can disturb the plant growth. In modern agriculture, this issue can be tackled by providing the appropriate amount of water for the plant. One of the methods is automatic control system based on the type of physical variables, which indicates water needs for plants [1]. Physical variables that are frequently used as an indicator are temperature and soil moisture [2].The automatic control system can also be applied in agricultural areas that have less water availability. This is due to the automatic control system can help saving water and operating costs [3]. Efforts in building optimal and efficient automated control system can be easily done with complete access to information. One way to access the information control system is via wireless communications [3,4]. From some of these challenges an automatic control system will be built on the research for controlling irrigation in telemetry based on temperature and soil moisture.
A Novel Method of Mobile Robot Fire Detection and Tracing Using Proportional Derivative (PD) Algorithm
Authors: Fatmawati Uvi Desi , Hidayat Wahyu , Lelono Danang
Published: July 2015

One of the problems in intelligent mobile robot fire fighting contest is how the robot can find and can extinguish a fire without alot of sensors. The fire is located in a white circle area at one of the corner in room with random combinations. The way to solve this problems is conventional method-called-wall tracing. The robot uses wall tracing method to navigate, when entering the room this method still in used by the robot until its find the fire spot then uses one additional sensor to detect the white circle area where the fire located at. After detecting the white circle area, the robot will extinguishes the fire. This paper proposed a new method as optimization of conventional method. The proposed method is implementation of current algorithm (proportional derivatives algorithm) not only to wall tracing but also to TPA81 sensor (fire tracing) -called-wall and fire tracing method. Furthermore, this method is combination method between wall tracing and fire tracing. The robot will approach directly to the fire without wall tracing and without detecting white circle area. Then, the robot extinguishes the fire quickly. The robot uses only TPA81 sensor that can be used to detects the fire spot and its position in the room. Test result shows that 50% of the fire position variation on Indonesian Intelligent Robot Contest can be optimized using this method.
Prototype of Photometric Stereo System Using 6 and 9 LED Light Source to Reconstruct Human Skin Texture
Authors: Juliastuti E. , Suprijanto  , Nurguritno M.
Published: July 2015

A quantification of skin surface is one of challenging problem which is required in skin health assessment and efficacy evaluation of cosmetic products. Due to limitations of direct visual assessment of skin microscopic topography, an optical dermastocopy is commonly used as skin imaging device to magnify skin topography based on a white light reflection. The limitation of this method is its poor spatial resolution to quantify skin topography. In this paper, a skin imaging based on photometric stereo is proposed to visualize microscopic topography of human skin. The prototype was developed based on modification of illumination source system on the digital microscope. The illumination system consists of 6 and 9 super-bright LED. Additional electronic circuit was integrated with illumination system in order to control LED so that it can light successively. After that, set of images acquired in different angle of illumination was recorded. All images will be reconstructed using software to obtain stereo images, which shows the depth of the surface. Implementation on skin surface profile performed on three test areas: the back of the hand and knuckle creases. Based on qualitative analysis, our proposed scheme of skin imaging based on photometric stereo is promising for surface profile measurement and imaging of the skin.
The Reliability of Low Cost Data Logger for Active Seismic (Surface-Wave) Data Measurements
Authors: Hartantyo Eddy , Sri Brotouspito Kirbani , Sismanto  , Waluyo
Published: July 2015

Seismic data acquisition needed a relatively fast data logger and multi channels input capability. For this purpose, we construct a measuring instruments based on low cost voltage data logger DI710ULS from DATAQ. The sensors (geophones) have 4.5 [Hz] natural frequency, produce an alternating electric voltage at rate 28 [V/m/s]. The ground shaking / velocity rate of active seismic surface-wave measurement from 5 kg hammer, at 3m distances, is less than 2 [mm/s]. This will produce an alternating voltage at less than 100 [mV].The active seismic surface wave measurements need around 1 ms time sampling for every channels and this instruments can record 7200 data for 8 differential channels, which is sufficient for this purpose. The DI710ULS has a standalone capability and all digital data were recorded in SDcard, whose very light and compact for field acquisition. By only 14[bit] DAC, the data shows reliable and seems good enough by 12.2 [μV] sampling. The data collected by using this data logger were successfully processed for surface wave analysis, and giving a reasonable result.
A Computer-Based Marine Automatic Radar for Rain Detection
Authors: Nugroho Ginaldi Ari , Munir Muhammad Miftahul , Khairurrijal
Published: July 2015

An improved rain detection system has been developed using a marine radar. The rain detection system is composed of a Furuno 1932 Mark II marine radar (radar scanner and display units), a radar control circuit, a signal conditioning circuit, an analog to digital converter (ADC), and a computer with a graphical user interface (GUI). The combination of the microcontroller and optocoupler in the radar control circuit was able to replace the omnipad and pushbutton control and it was also employed to activate the radar and the sector blanket mode. The signal conditioning circuit along with the ADC and the clutter removal made the video and navigation signals from the display unit become ADC-counted rain data. By comparing the ADC-counted rain data of the Furuno marine radar with the reflectivity obtained by GMR X Band weather radar, it was found that the Furuno rain detection sensitivity only spans from 30-55 dBZ.
The Entry of Ions into a Molecular Synthetic Channel in a Membrane
Authors: Morton-Blake D.A.
Published: July 2015

A molecular dynamics simulation is conducted to describe the behaviour of sodium and chloride ions as they enter a synthetic ion channel (mounted in a bilayer membrane) from aqueous NaCl solutions on either side of the membrane. The channel consists of an α-helical peptide chain scaffold with six aligned crown ether (CE) rings (18-CE-6) as side groups, forming a molecular chamber between each neighbouring pair. Responding to the channel’s axial −2 to −1 V electric potential, the Na+ ions, but not Cl−, enter the channel spontaneously but they do not proceed beyond the first chamber formed between CE rings 1 and 2. The application of an axial electric field promotes the entry of a Na+ ion and its migration over the internal length of the channel. The forces that drive the migration phenomena are predominantly coulombic. Although the same electric field simultaneously allows a Cl− ion initially to access the channel the ion is subsequently expelled from the first chamber into the bilayer. Although a Na+ ion may make a facile or even spontaneous entry to the channel it requires an energy estimated from Coulomb forces as ~5 eV to pass subsequent CE rings, and considerably more to exit the channel. An important role is found for the vibrational activity of the ether rings’ C-O-C units in their facilitating contribution to the migration of Na+ in the channel.
Mass Diffusion in Process Metallurgy
Authors: Nurni Viswanathan Neelakantan , Ballal Bharath Nidambur , Seetharaman Seshadri
Published: July 2015

Diffusion phenomena are of great importance in materials processing wherein atomic, molecular or ionic species are distributed within a phase or among different phases. Though the phenomenological equation describing the diffusion phenomena including the bulk flow arising out of diffusion in fluid and the phenomena of Kirkendall shift in substitutional solids are the same, these processes are often treated independently. Some discussion on this aspect is presented in the theoretical aspects of diffusion. Owing to the complexity of atomic interactions, prediction of diffusion coefficients in condensed systems from first principles may not be that reliable; Experimental determination of diffusion coefficients is essential. In the second section, some novel experimental techniques developed recently to measure diffusion coefficients in the solid state as well as liquid systems including those in slags are described. In the last section, two case studies on application of diffusion phenomena in process metallurgy are presented emphasizing the importance of these in metallurgical processing.
An Overview of Selected Phenomena in Multicomponent Diffusion
Authors: Dayananda Mysore A.
Published: July 2015

There exist several interesting phenomena and observations reported in literature for isothermal diffusion in multicomponent systems. Such phenomena include uphill diffusion, development of zero-flux planes and flux reversals for individual components, flux reversals at interfaces, and instability at interfaces and multiphase layer development. In addition, uncommon diffusion structures exhibiting unusual diffusion paths can develop in both single phase and multiphase diffusion assemblies. An overview of such phenomena is presented to highlight the role of interactions among diffusing components with the aid of selected diffusion studies carried out in multicomponent alloy systems, aluminides, silicides, and nuclear fuels.
Magneto-Electronic Phase Separation in La0.7Sr0.3MnO3 with Metallic Behavior in Paramagnetic Region
Authors: Ryzhov V.A. , Khavronin Vladimir P. , Deriglazov Vladimir V. , Mukovskii Yakov M. , Chichkov Vladimir I.
Published: July 2015

The data on transport and magnetic properties (ac linear and nonlinear (second and third orders) susceptibilities) are presented for La0.7Sr0.3MnO3 single crystal with metallic behavior in paramagnetic (PM) region and ferromagnetic (FM) metallic ground state. The FM clusters originate in the PM matrix of the compound below some temperature T* > 425 K, their nonlinear response being weakly T-dependent down to 367 K. This was attributed to clusters arising in the preferable sites formed by chemical inhomogeneities introduced by doping. On cooling below T# ≈ 366 K > TC ≈ 363.3 K, a fast growth of cluster response without the change of its parameters is observed that was attributed to the development of homogeneous nucleation of the FM clusters. The latter stage continues below TC and is accompanied by a crossover to the steeper decreasing of resistivity with cooling that suggests metallic properties of the clusters. The cluster nonlinear response masks completely that of matrix at T = 360.3 K < TC, where it is well described by the model of ensemble of magnetic single-domain nanoparticles in superparamagnetic regime based on the formalism involving Gilbert-Landau-Lifshits equation. Below TD = 359.6 K at the stage of domain formation, a weak interaction of matrix and cluster subsystems leads to their mutual ordering, which is accompanied by a sharp decrease of the nonlinear response to a weak ac field in small steady field H. The latter suggests an “antiferromagnetic” type of arrangement of these subsystems that provides decreasing the magnetostatic energy of the sample.
Relaxation Attenuation of Ultrasound by the Jahn-Teller Centers in ZnSe:Cr in High Magnetic Fields
Authors: Averkiev N.S. , Bersuker I.B. , Gudkov V.V. , Zherlitsyn S. , Yasin S. , Zhevstovskikh I.V. , Baryshnikov K.A. , Monakhov A.M. , Sarychev M.N. , Korostelin Yu.V. , Landman A.I.
Published: July 2015

The magnetic field dependence of ultrasonic attenuation α (B) of slow shear waves in the ZnSe:Cr2+crystal at a number of fixed temperatures fromT=1.4 K to 20 K in magnetic fields of up toB=14 T were investigated. For magnetic fieldsBabove 5 T we found that the attenuation increases with B monotonically, and at a given temperature it is proportional to the magnitude of relaxation attenuation atB=0. We show that the magnetic field dependent attenuation is due to the change in populations of the lowest energy levels of the impurity centers CrZn4Se, produced by the Jahn-Teller effect and split by the spin-orbital interaction and the magnetic field. The calculations carried out without fitting parameters are in good agreement with the experimental data.
Peculiarities of Elastic Properties of RE Cobaltites RBaCo4O7 (R = Dy - Er, Y) at Magnetic Phase Transitions
Authors: Kazei Zoya , Snegirev Vyacheslav , Andreenko Alexander , Kozeeva Ludmila , Kameneva Margarita
Published: July 2015

It has been found that the temperature dependences of the Young’s modulus for rare-earth cobaltites RBaCo4O7 (R = Dy - Er, Y) exhibit significant hysteresis and irreversible effects over a wide range (80–280) K between the structural and magnetic phase transition temperatures. At the magnetic phase transition temperature, there are weak and smoothed anomalies of the Young’s modulus, which correlate with the low dimensionality and frustration of the exchange interactions in the Kagome lattice of the Co subsystem for the studied rare-earth cobaltites.
Magnetooptical Properties of Hg1-xCdxCr2Se4 Solid Solutions
Authors: Sukhorukov Yurii P. , Telegin Andrey V. , Mostovshchikova Elena V. , Bebenin N.G. , Zainullina Rimma I. , Gan’shina Elena A. , Zykov Georgiy S. , Fedorov Valentin A. , Menschikova Tatiana K.
Published: July 2015

Influence of the substitution of Hg by Cd on Kerr effect, magnetoreflection, and magnetotransmission of unpolarized light for Hg1-xCdxCr2Se4 (0≤x≤1) single-crystals is studied. The changes in the magnetooptical properties of the ferromagnetic spinels are shown to occur in compositions with x>0.1. The giant values of magnetooptical effects in Hg1-xCdxCr2Se4 spinels can be used in the magnetooptoelectronics.
Two Sources of Paramagnetic Curie-Type Contribution to the Normal State Magnetic Susceptibility of HTSC YBa2Cu3O6+δ
Authors: Mamsurova Larisa , Trusevich Nikolay , Pigalskiy Konstantin , Vishnev Alexey , Mamsurov Igor
Published: July 2015

The experimental evidence for the existence of chain paramagnetic Curie-type contribution to the temperature dependence of the normal (non-superconducting) state magnetic susceptibility χ (T) was obtained for pure high-Tc superconductors (HTSC) YBa2Cu3O6+δ series with different oxygen contents (0.6 < δ ≤ 1). It was shown that this contribution became clearly evident on curves χ (T) only at the temperature T < 150 K. It increases with the amount of oxygen vacancies increase in Cu1–O4 chains, and also depends on the way of the oxygen vacancies ordering.