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  • Leon Mishnaevsky Jr. asked a question in Open Access:
    What is "Advances in Engineering"?

    Hi, I received a email

    "We are pleased to inform you that our Target Selection Team at Advances in Engineering has identified your recent peer-reviewed paper: ......... We would therefore like to feature it in our next edition of Advances in Engineering Series." We take small fee...

    Who knows this journal? Is it a serious journal, or something from "open access/Hirsch factor" industry?

  • Zeydin Pala added an answer in Sensor Networks:
    Is it possible charging sensor nodes wirelessly?

    Are there any companies that promote solutions for wireless charging for any area?

    Zeydin Pala · Mus Alparslan University

    Thank you very much Mr. Abdulla and Mr. Misra.

  • Bhasker Soni asked a question in Metal Foams:
    How to select the range of load for studying compressive stress of aluminum foam ?


    I want to study the compressive strength (stress vs strain) of aluminum metal foams. What should be the load applied to the sample ? How should I select the loads ?

    For example can I use machine with capacity of 30 kN or 100 kN for testing ?

  • O. Akay asked a question in GRASP:
    Meaning of negative frequencies?

    In the freshman-level "Introduction to Signals" course that I teach, I notice that some students have a hard time in grasping the notion of negative frequencies. They want a palpable physical explanation of what negative frequencies correspond to. I try to explain that it is more of a mathematical convention than a physical reality; but, I am not successful enough to dispel the confused looks in their faces.

    I would appreciate some expert opinions on the meaning of negative frequencies. 

  • Zeydin Pala added an answer in Data Communications:
    Is it possible to design a single protocol which handles all problems occurred during data communication?

    -in wired/wireless metworks

    -in wireless sensor networks

    Zeydin Pala · Mus Alparslan University

    Thank you Mr. Abdulla.

  • Fabrice Clerot added an answer in Phosphorescence:
    How to confirm our spectrum shows fluorescent or phosphorescent property ?

    How to check from the results of emission or excitation spectrum for metal complexes?

    Fabrice Clerot · Orange Labs


    as said above, time-resolved PL is required (temperature dependence may be tricky as it requires a good knowledge of the collision process)




  • Zeydin Pala added an answer in Network Analysis:
    How accurately can I analysing torrent data flow in campus network?

    Which tools can be used for that analysing?

    Zeydin Pala · Mus Alparslan University

    Thank you very much Ogechi Ebere.

  • Tobias Belitz asked a question in Ethernet:
    Can someone explain me briefly the definition of a “False Carrier” indication in Ethernet?

    I had a look to the IEEE802.3 standard, but it has not provided much information what the PHY is really indicating by this type of message to the MAC.

  • Juan Angelo Diaz Frejas asked a question in Virus:
    What is the best method in detecting the presence of White Spot Syndrome Virus for Penaeus monodon?

    Penaeus monodon

  • Manjunath Hullikere M added an answer in Angiogenesis Inhibitors:
    Can anyone provide me the protocol for Zebra fish model(Angiogenesis inhibitor assay)?

    I am working on 3 plants in order to screen for their anticancer activity.

    As a part of my study I have planned to go for quantification of anti-angiogenesis activity.

    Manjunath Hullikere M · Mangalore university

    thank you Vladimir A. Kulchitsky.

  • Igor Goliney added an answer in Open Access:
    What do you think about "The Economics of Open Access" ?

    See http://citesandinsights.info/civ15i4.pdf

    Igor Goliney · Kiev Institute for Nuclear Research

    They can, they can. But with OA with much less money. Expect cuts in financing.

  • Carina Dehner asked a question in His-Tag:
    How to measure self-made protein with his-tag after purification with imidazole-containing buffers?


    As mentioned I am currently producing 2 different types of recombinant his-tagged proteins. One is intracellular and one is secreted into the supernatant - and them I am using a Ni-NTA Resin to purify these. Herefore I made buffers (equilibration buffer, wash buffer and elution buffer) that contain different concentrations of imidazole. This usually works for some point - but when I measure I get barely anything if not negative values - if I measure in the nano drop but I see in the peaks on the machine that the imidazole makes problems in measurements. I tried a BCA which did not really work. But if I load just very few on a western - I get a huge and correct band, detecting with my monoclonal specific antibody. Now I was wondering - is there anyone who can help in terms of " how to measure these proteins" ? This is of course essential for establishing protocols for ELISAs or anything...(I already tried the low-UV absorbance imidazole from SEMBA - this did NOT change anything). Thanks a lot - that's very important for us!

  • Guido Bongi added an answer in Plant Stress:
    Could someone clarify the idea about magnetic treated water for plants and in which is the best stage for plant growth and development ?

    plant stress physiology

    Guido Bongi · National Research Council

    AMT has been evaluated by indipendent tests and thre is lack of evidence for any effect at all. In biology false positives can give support for some activity but fail to replicate. Documentation can be found in https://wryheat.wordpress.com/2012/02/17/do-magnetic-or-electrical-water-treatment-devices-really-work/

  • Audrey Garnier added an answer in Camera Trapping:
    How can I take into account heterogeneity in sampling effort in a binomial glm (presence absence)?

    I want to link species presence with environmental variables. But, species data come from camera trapping and camera traps didn't work the same total period (some cameras worked during 50 days, others during 200 days..).

    How can I introduce this heterogenity in my glm ?

    Thank you very much for your help

    Audrey Garnier · Paul Sabatier University - Toulouse III

    I am sorry I did not answer earlier, I was preparing my exams.
    Thank you so much for your help.
    I would like to use occupancy model (function occu in the package unmarked).
    My data for one species look like this :

    > umf_atele
    Data frame representation of unmarkedFrame object.
    y.1 y.2 y.3 y.4 y.5 y.6 y.7 Chm25 Wetness25 Light25
    1 1 0 1 1 2 2 0 1.45151066 -0.65943258 -0.31533869
    2 0 1 0 0 0 0 0 0.77021169 -0.45903043 -0.48454019
    3 0 0 1 0 0 0 0 -0.03000100 -0.54181947 -0.20756641

    There are 63 sites in total. With Chm25, Wetnes25 and Light25 = my environmental covariates.

    Here, there are 7 years of sampling but sampling effort (the number of time a site was surveyed) are not equal between years and between 3 groups of sites.

    How can I introduce this sampling effort in the "occu" function ?

    Thank you in advance,


  • Ronald Fricke added an answer in Fish Taxonomy:
    Can anyone identify these marine fish species?

    These marine species were photographed during the field works. I have identified most of them but I some doubt on identifications. So I would like to have your identification too.. Thanks

    Ronald Fricke · State Museum of Natural History Stuttgart

    This is Pomacentrus proteus. The species is common in Sri Lanka; it is only found in Sri Lanka and the eastern Andaman Sea. The lower half of the body in the juvenile is yellow; the adult is mostly bluish grey, including the caudal fin.

    Pomacentrus trilineatus is restricted to the Western Indian Ocean (Red Sea, East Africa, Seychelles, Madagascar and Mascarenes); it has a pale caudal fin  and posterior dorsal and anal fin in adults, and a much more yellow body in juveniles. The two species are illustrated in Allen (1991):

    Allen, G. R. 1991. Damselfishes of the World. Mergus Publishers, Melle, Germany. 1-271.

  • Piyush Kalakoti added an answer in Logistic Regression Analysis:
    Is it valid if I validate my logistic regression model in the same population from which it was derived?
    Validating logistic regression models.
    I derived a logistic regression model for predicting clinical response to a drug. I have two groups: responders and non-responders, classified according to a clinical scale. The predictors of the model were two polymorphisms and three environment variables such as smoking. I generated the predicted probabilities using logistic model for all patients. Then using predicted probabilities i constructed a roc curve for responders vs non-responders.
  • Muhammed Fasil added an answer in Simulink:
    How can I include space vector PWM converter in simulink just by using some gains? I've read that pwm converter can be modeled as a gain with a delay?

    Space vector PWM= Kpwm * e^(-sTsw).

    What is the value i should give for Kpwm for space vector pwm?

    e^(-sTsw) is for dead time? And for dead time i should use switching frequency as T??

    Muhammed Fasil · Petroleum Institute (UAE)

    Pulse Width Modulation

  • Jafar Rezaei added an answer in TOPSIS:
    The Analytic Hierarchy Process-Is it old and Outdated?

    I am in the process of developing a proposal which hinges on developing a risk assessment model. I am proposing to use multi criteria decision analysis tools for this especially the AHP by Prof Saaty. However, one of the Professors commented as follows: "The research method suggested looks rather simple and is using a very outdated method".

    I note that much as there have been newer versions as alternatives to the AHP ie fuzzy methods and TOPSIS, the AHP appears to remain dominant both in practice and academia. Based on this, i feel the AHP remains a dominant legend in multi criteria decision analysis. Any thoughts for tried and tested alternative methods for me to develop a risk assessment model?

    Jafar Rezaei · Delft University of Technology

    Dear Bruno,

    I have applied AHP and (several versionsof) fuzzy AHP before. AHP suffers from some very major issues. Fuzzy AHP (not all, the one proposed by Mikhailov, 2003) is much better than AHP. It is true that AHP is still the dominant MCDM method, however it does not mean it is a good method.

    I have recently developed a method called BWM, which, I think, and have shown in the paper, that performs much better than AHP. You may find the paper here: http://www.sciencedirect.com/science/article/pii/S0305048314001480

    A website dedicated to this method contains some master theses, you may also have a look. The theses help to better undestand the method and ints implementation.

    Here is the website: www.bestworstmethod.com

    Please let me know if you have any question.

    After all, it is up to you to choose a method. If you want to go for AHP, you can find several advantages to support.

    Very best,


  • Muhammed Fasil asked a question in Images:
    In given diagram why we are calculating voltage angle from V alpha-beta , why not Vabc?

    And also why we are finding ac voltage magnitude from Alpha-beta not from dq or from abc?  Please find the image given

  • Md Farhad added an answer in Durum Wheat:
    Which is more resistance to drought stress, bread or durum wheat, and why?

    Please if you have convincing answer for: Which one is more resistance to drought stress, bread or durum wheat? why?

    Md Farhad · Bangladesh Agricultural Research Institute

    Durum wheat, which has genetic potentiality to tolerate drought stress.

  • David Burgalassi added an answer in Urban Regeneration:
    Does anyone know about urban regeneration of inner city market areas in Europe and America?

    Can somebody suggest me some cases of urban regeneration centered on market areas in inner centers?

    I am particularly interested in cases from Europe and Northern America. 


    David Burgalassi · Regional Research Institute on Economics

    Dear Laura and Nico, thank you very much for your valuable suggestions!

  • Berhanu Nigussie Worku added an answer in Motor Skills:
    Can anyone provide me with resources (articles) dealing with predictors of holistic child development?

    Currently, I am writing a manuscript, but run short of articles stating stunting, wasting, underweight, maternal age, maternal education, family occupation, family income, availability of play materials & ground, mother-child & child-to-child interaction, age of the child and family size as predictors of child development ( personal-social, language, fine and gross motor skills). I used Denver II screening developmental  test to measure the developmental outcomes, for children from 3 months to 5 years. For the data analysis, I used step-wise multiple regression.

    I hope you can support me in this regard!!!



    Berhanu Nigussie Worku · Jimma University

    Thanks so much Barry! I will look into the book. But, my especial interest is developmental delay ( not psychological disorders, etc) and its predictors!

    Come again!

  • Muhammad Asim Farid asked a question in E-Banking:
    Can anyone help me to download these articles?

    The structures of BaCeO3, BaPrO3 and BaTbO3 by neutron diffraction: lattice parameter relations and ionic radii in O-perovskites
    A. J. Jacobson, B. C. Tofield and B. E. F. Fender

    Acta Cryst. (1972). B28, 956-961

    A note on the crystal and magnetic structure of BaTbO3

    E. Banks, S. J. La Placa, W. Kunnmann, L. M. Corliss and J. M. Hastings

    Acta Cryst. (1972). B28, 3429-3430

  • Barry Turner added an answer in Philosophy:
    Does certainty or absolute truth exist?
    Our means of perceiving reality through our senses make us vulnerable to distortions and biases. But with scientific methodologies, can we claim that perception of objective reality is indeed possible? OR objective reality only in the context of known knowledge of the time/period?
    Barry Turner · University of Lincoln

    According to various cosmologists there are two possible fates for the universe.  A slow 'heat death', resulting from the inevitable effects of the 2nd law of thermodynamics or a 'big crunch', resulting from a deceleration of expansion followed by a gravitational contraction.

    In either case we have an inevitable 'end' of the universe (two certainties).  Current scientific orthodoxy now rules out an eternal, never ending universe and has done since Olber's Paradox.  Since the discovery of the cosmic background radiation we are 'certain' the universe had a beginning and must have an end.

    Are these absolute truths and certainties?

  • Esra'a Alkafaween added an answer in Parallel Algorithm:
    Can we consider that a multi-population genetic algorithm is the special case of parallel genetic algorithm?

    Can we consider that a multi-population genetic algorithm is the special case of parallel genetic algorithm? And if so how it is possible that we consider it?

    Or we can not consider that at all.

    Esra'a Alkafaween · Mu’tah University

    thanks very much Lev Kazakovtsev

  • S. Feliu Jr added an answer in Catalyst:
    How can I distinguish between Ce4+(CeO2) & Ce3+(Ce2O3) as promoter in the catalysts?

     Dear all, 

    I already prepared 2 catalysts. First, Pd/Mg1-xCex3+O . Second Pd/Mg1-xCex4+O.

    How can distinguish between them, which different in Ce species only? the result of XRD & FTIR are same.  Furthermore, the XPS results also same for differnt Ce species,

    I read in the journals the XPS results should be differnt.

    only TPR-H2 analysis gives me different result between Ce species.

    i used XPS spectra to detect the element composition especially Pd element cause it prepared in low conc. 1%

    Plz, if u have the answer , provide me the reference.


    S. Feliu Jr · Spanish National Research Council

    The area percentage of Ce4+ on the surface of the specimens treated with cerium was calculated using the expression given by Yu and Li [21]:


    where u‴ is the area fraction of the satellite appearing at 916.7 eV in relation to the total area of the Ce 3d peak.

  • Alexander Gleich asked a question in Gene Expression Studies:
    What are possible CYP inducers for a bovine hepatocyte cell line?

    Currently we are planning qPCR gene expression studies of the biotransformation system of our hepatocyte-derived cell line from cattle.

    What would be suitable CYP inducers beside beta-naphtoflavon for CYP1A1 and dexamethasone for CYP3A?. Is there any possibilty to induce phase II biotransformation enzymes like UGT1? What CYPs and phase II enzymes are espacially important in cattle and should be definitly attested?

    Thank you for your help.

  • Sahbanathul Missiriya added an answer in Collaborative Research:
    Any researcher interested in collaborating on the topic Evidence based practice in nursing education?

    I am currently working on my research entitled "Knowledge on Evidence based practice among student nurses. I already have the research protocol and I want to expand this research by collaborating with researchers abroad preferably in a university where EBP is integrated in their nursing courses. 

    Sahbanathul Missiriya · Saveetha University

    I too interested.

  • Birhane Gebrehiwot Tesfamariam added an answer in Remote Sensing Applications:
    Can we automatically classify only the rivers from satellite images using any programming or different methods?
    Suppose we have temporal data of a particular river from the past 10 years; it would take a long time outlining the rivers and than perform river change detection. So can we automatically classify those river using a programming platform?
    Birhane Gebrehiwot Tesfamariam · Dilla University

    In addition to these described above, I suggest you to use images of the dry season in order to differentiate the water body in the river from other land covers provided that the target rivers flow throughout the year. Again, if the rivers are wide enough to be seen on the satellite image according to the resolution, you can easily interpret the rivers by displaying the image in the NIR band or you can  also calculate the NDVI to easily identify water bodies and you can use supervised classification followed by  image difference to detect the changes over time. However, if the rivers are too narrow which cannot be seen on the image, i suggest you to make field survey to digitize using GPS and then overlay on the image.