Reliability - Science topic

Thank you

Will data from a factorial design used to train an ANN catch higher order interactions more accurately?@tapanbagchi

Estimated Glucose Disposal Rate (eGDR) is a measure of insulin sensitivity that is calculated using mathematical equations based on clinical and laboratory parameters. There are several modified equations available for eGDR, as researchers and clinicians have attempted to improve its accuracy and applicability for different populations.

The modifications to eGDR equations are usually based on the data from studies that show the limitations of the original equation or its applicability to certain populations. For example, some modifications may incorporate additional clinical variables such as age, gender, ethnicity, or body mass index (BMI), which have been shown to affect insulin sensitivity. Other modifications may incorporate different laboratory measures such as fasting insulin levels or HbA1c.

The threshold for eGDR varies depending on the specific modified equation used and the population being studied. Generally, a higher eGDR indicates better insulin sensitivity, while a lower eGDR indicates decreased insulin sensitivity or insulin resistance. However, the specific threshold values for eGDR may vary depending on the population studied, as different populations may have different baseline levels of insulin sensitivity and different risk factors for insulin resistance.

Ultimately, the decision on which eGDR equation and threshold to use depends on the research question or clinical context. Researchers and clinicians should choose an equation and threshold that is appropriate for their specific population and research or clinical needs.

reference :

First, start with two items and add one by one until you reach the desired level of reliability. As you increase the number of items, the Cronbach Alpha value should start decreasing. You have to decide what level of reliability is acceptable for your research purposes and adjust accordingly.

Second, consider revising item wording if necessary. Different words may influence how respondents interpret questions, so it's important to make sure that all items are worded in a way that accurately reflects what you're trying to measure. Additionally, make sure that all items measure the same underlying construct; if they don't, this could lead to lower Cronbach Alpha values as well.

Finally, it's important to remember that Cronbach Alpha values can vary depending on the sample size and other factors such as age or gender. If possible, try running your analysis on different subsets of data to see if this has an effect on your results.

By following these steps, you should be able to amend any negative Cronbach Alpha values for RSE Rosenberg Self-Esteem scale and ensure reliable results for your research project.

Hi

It is not reliable. In fact this IA system aim is to simulate a human conversation, not to provide reliable information.

However, it is very interesting to make a first approach to a topic, although you will have to confirm the quality of the information later.

Huma Tariq Dr You can use Mahalanobis distance - This is is unitless, scale-invariant, and takes into account the correlations of the data set. See:

Madry, Wieslaw. "A statistical approach to multivariate evaluation of diversity with respect to quantitative characteristics in cereal germplasm collections." Journal of Applied Statistics 24.5 (1997): 573-588.

Results are liable to be highly biased. Those who respond and respond quickly may represent a stratum or subpopulation which may be quite different from the unknown population in general.

If you have good covariate data, you might use that. See "Comparing Alternatives for Estimation from Nonprobability Samples," by Richard Valliant, December 2019, Journal of Survey Statistics and Methodology 8(2),

DOI: 10.1093/jssam/smz003

https://doi.org/10.1093/jssam/smz003

https://www.researchgate.net/publication/337950671_Comparing_Alternatives_for_Estimation_from_Nonprobability_Samples

However, that seems unlikely.

Was there a question in here? David Booth

@Kushal Grakh

Thank you for answering.

I know that Cronbach’s alpha can be applied on scale items (e.g., likert scale) and on items with true and false(s) answers, but is it applicable to my questionnaire with such a type of item as the items mentioned in the original post?

Thank you for the lead Aahed, I'm sorry I'm having trouble locating the database and having only been able to find the NOAA 3D geoelectric hazard data, would it be possible for you to share the link for the dataset you mentioned? Thank you again!

Yes, many types of human errors could be nullified with programmed procedures and proper specific location and records of storage and availability with respective group. All parcel 📦 handler companies are using same types of software for storage and delivery 🚚

Hi,

I think he/she gave a big guideline by stating this,

" Maybe you can include references that support that the data is still valid and reliable for analysis in your study."

So, in my opinion, you need to find similar published works or websits that support the idea of his comment.

To find the formula for proportionate sampling

Visit www.investopedia.com

Rename it to .f .

Oscar Agyemang Opoku Thank you your answer is really useful

I have been working and publishing on the subject, as you can easily read from my profile.

Obviously, my analyses/researches are focused on Italy.

Best Carbon Footprint Calculators

i would love to recommend the Cool Climate Calculator....It includes in its calculations the four main categories of household consumption, resulting in an estimate of your carbon footprint that takes into account all the major sources of your personal emissions. The calculator allows you to plug in granular data for each category. For transportation, it asks for your annual mileage from a variety of methods. For housing, it asks for your energy usage from all the major home energy sources.

The "validity" and "reliability" refer to the way questions are written to obtain objective results from subjective perspectives (the people surveyed). They remain valid as long as they are applied in the original language to the validated test populations.

Changes in language or cultural understanding by either the questionnaire or the participants would require revalidation and tests for reliability.

For example, a questionnaire written in English and intended for participants within the Canadian culture with a certain level of education would be valid and reliable throughout Canada with that understanding of education and culture.

However, if it was translated into French, or used in England, or with a population with a different educational level, it would need to be re-validated to avoid errors in understanding and response.

This applies to studies conducted by interviewing people. If you mean a test protocol of physical observations (statistical analysis) then a validated protocol will remain valid for any similar test.

Thanks a lot Aparna Sathya Murthy

Dear Thuy,

In our last publication, we had the same problem with CCD and the alpha being generating negative values, so I inserted the levels in terms of alphas and it worked perfectly.

You can check our publication

Kind regards

These are not real awards. At some stage they will ask you for money

Interesting topic and very interesting responses.

Dear Yi-Lin, just to add to the replies above: please be mindful of the media you're using. If no perfusion is to be used, you need a buffer such as HEPES to maintain the pH. Regular ACSF rely on NaHCO3 which do require bubbling with carbogen mix.

Hi,

You also have BLAST and, for this, the Battery Software Open Source Landscape, BOLD, GT-AUTOLION...

For more information about this subject, I suggest you see the links on the topic.

Best regards

I would say that there is not best in research in general. Everything is relative. And the results can also be dependent on what is your experiment about and what and how you design the experiment in terms of microbiology. As of your question, point 1 and 2 in not separate and can be done in parallel.

There are so many studies done on this topic which surely can help you in designing the study and to understand what is needed.

However, in the end everything would come to you what you are doing to do and how present the study.

Dear Tasneem Alatwi,

Concerning your question, I invite you to read "Franke, G. H. (1997). "The whole is more than the sum of its parts": The effects of grouping and randomizing items on the reliability and validity of questionnaires. European Journal of Psychological Assessment, 13(2), 67–74. https://doi.org/10.1027/1015-5759.13.2.67"

Findings seriously call into question the admissibility of subscale extraction for self-report inventories.

You should use rho_c as rho_a is usually used in Consistent PLS to correct the over and under estimation that occurs in rho_c and Cronbach's alpha.

This study will shut Wed 0:00

There is a good reason why accuracy is not an appropriate measure for information retrieval problems. In almost all circumstances, the data is extremely skewed: normally over 99.9% of the documents are in the nonrelevant category.

Few options can be Kalyani Steels Limited; Mahindra Ugine Steel Company Limited; RINL Vizag Steel Plant; or JSW Steel Limited. You may cross check once.

A caution to the appropriate use of any model is always useful. But don't confuse (known) uncertainty with reliability or utility. Your statement would imply that there is no validity at all to any fragility curve. Maybe you are adding your own assumptions or conclusions to something that is not there in the intended usage. If "... all fragility curves... are not reliable.", none should be used, and the model abandoned. You may need better evidence to effect that change.

Secondary data were collected by other persons or organizations. its reliability and validity depend upon the reputation of the person or organization. Once you are confident that the secondary source of data is authentic and reputed, it is not necessary to check its reliability and validity. In the case of primary data, there is necessary to check the reliability and validity of questionnaires or data collection tools.

The efficacy of the treatment of PUD is measured by, the absence of clinical symptoms, negative H. pylori test, and endoscopy. However, the gold standard test is endoscopy.

Hi,

Alfa Chemistry can offer kinds of high-purity and reliable laboratory materials.

Thanks for the update

What I did on the job (portraying the maintenance process from Plan to Approve to Schedule to Work to Closeout) was make a "bubble chart" with arrows from stage to stage (including skips and reversals, such as the plan was not approved and kicked back to planning) with arrows and the average time to go on the path and the number of packages to go on the path in a given time frame (such as a month).

With modern graphics, one could actually animate with ants going from mound to mound I suspect.

Hello Reza Jahanshahi

I really like your topic because it lends itself to quite a few different types of journals: neurology, society medicine, general/internal medicine. Which of these topics do you think fits best?

For example, if you choose neurology, the journals I would think of first are "Clinical Neurology" and "Journal of Neurology". There are many journals in this field that have higher rankings, of course, and we need to find something suitable for your work.

Partitioning is a commonly used method in phylogenetics that aims to accommodate variation in substitution patterns among sites.

I encourage you to read articles related to what you are interested in. Review the article below, it could be helpful.

One of the measures to solve the lack of Cronbach's alpha is McDonald's omega coefficient in SPSS software, which is based on a one-way model. Especially when the covariance between items can be approximately explained by a single-factor model, the omega coefficient formula fits the definition of reliability (HayesDepartment and Coutts, 2020).

source:

Try to add technical replicates and at least 3 biological replicates to get a statistically significant data. However practically with the difference of 0.5 cT you cannot actually comment too much about the expression of gene. A higher number of biological replicates would help in this case.

Thank you very much! I really appreciated your help.

Parvathy Anil Have a look https://hal.archives-ouvertes.fr/hal-00903349v1/document

Please note that the incidence is usually (but not necessarily) calculated for acute communicable diseases, and the prevalence usually calculated for the chronic non-communicable disease. You have asked about the best time to calculate the incidence: of course it should be at the end of the period. eg incidence of COVID-19 during the year 2021, it is the number of cases of COVID-19 developed during 2021 (numerator) among people who were free from COVID-19 at Jan 1, 2021 (denominator). If you calculate the point prevalence of COVID-19 now, it would be very low, but if you calculate the period prevalence (eg during the previous year) it would be high.

Physical activity assessment tools in monitoring physical activity: the Global Physical Activity Questionnaire (GPAQ), the International Physical Activity Questionnaire (IPAQ) or accelerometers – choosing the best tools.

Plasma treatment power is too lower than ours, sometimes humid environments OH- group easily & fastly disappears. I suggest using 100% power to treat. For reference, we use 70W O2 20sccm 30sec condition. Abigail Dos Santos

I consider Dear Dr. Sangeeta Bhanjachaudhuri that the manipulation of information should always alert us as to its reliability and, above all, it tests our susceptibility to information that we do not judge to be wrong at first glance, because the importance of the credibility of any source in the persuasion process appears well documented for this reason we must investigate if there is a similarity of the source that interests us with other similar sources, only in this way can a good evaluation of credibility be reached.

No, the two values of r are identical. The only reason the p values differ is that you have more scores in Group B.

Aberrant T-cell responses underpin a range of diseases, including asthma and allergy and autoimmune diseases. Pivotal immune elements of these diseases are the development of antigen-specific effector T-helper type 2 (Th2) cells, Th1 cells, or the recently defined Th17 cells that are associated with the clinical features and disease progression. In order to identify crucial processes in the pathogenesis of these diseases it is critical to understand how the development of these T cells occurs. The phenotype of a polarized T-cell that differentiates from a naïve precursor is determined by the complex interaction of antigen-presenting cells with naïve T cells and involves a multitude of factors, including the dominant cytokine environment, costimulatory molecules, type and load of antigen presented and a plethora of signaling cascades. The decision to take the immune response in a certain direction is not made by one signal alone, instead many different elements act synergistically, antagonistically and through positive feedback loops to activate a Th1, Th2, or Th17 immune response. The elucidation of the mechanisms of selection of T-cell phenotype will facilitate the development of therapeutic strategies to intervene in the development of deleterious T-cell responses. This review will focus on the pathways and key factors responsible for the differentiation of the various subsets of effector CD4 T cells.

When you write you have a range of applications, the SyncorePlus from Buchi might be a suitable device, as you can simply change the Racks for another application. Unless you have hundreds of sample per day, I would actually go for the R-48, because you have a higher evaporation area (bigger vessels) and you will be very fast with your evaporation. The installation is easy – heat up the system, insert your samples, cover onto the samples, and start. I know from my experience that water:methanol mixtures are not easy to distill, because they tend for boiling retardations. Therefore, you would choose a slow pressure gradient at first at high shaking. And if that doesn’t help, just ask your local Buchi distributor in down under, they have a Competence Centre and will help you out if you face any problems.

Generally helps to have a focus group take the survey, and then orally interview the group and see if you ended up with different answers in the interview versus what they put down for written survey. Oral interviews do allow for more follow up and gathering of context.

Also, consider a generic question or two - something like "I like ice cream" but close in context to the subject of the survey. Having a question that the answer should be "obvious" (positive or negative) gives a good calibration,

I would caution against responses such as apparently shown for question 19. That is a rather long list, and perhaps multiple answers are valid for the survey taker. If you make the survey too hard or too long, it is unlikely a person will complete the survey.

The symmetries are the starting point. So it's U(1) gauge invariance and global Lorentz invariance (along with the assumption that the equations of motion don't contain more than two time derivatives) that describe all the properties of electric charges.

These are the assumptions, from which the electromagnetic properties of matter and radiation are derived.

I understand your request as these units are quite expensive. Thera are several low prices units on the market. If you need that rotary evaporator for some years, I would invest in a high quality system like a buchi rotavapor. In India, Buchi offers fast support and fast availability for spare parts as they have a Buchi office im Mumbay..

its scam, they want your CV and than give you a link were you can pay a fee (about 300 dollar) for a webinar where you give a presentation and then in return you may get the "certificate".

So the Vebleo guys win twice:

1. you pay a fee (300 dollar)

2. you give a free presentation (which may also cost hundreds of dollar in your time)

and you get a useless pdf Vebleo "certificate".

Do not fall for this bullshit

Dear Arnab Barua Niloy

You can also use SCAPS software for modelling.

S. Béatrice Marianne Ewalds-Kvist , I appreciate

Dear Dr.,

I hope these articles are helpful for you:

Kind regards,

Salah

Of course, we'd love to. Some of the information is on the website, but we can answer any questions you may have about it.

Greetings

alpha values were described as

excellent (0.93–0.94),

strong (0.91–0.93)

look at "The Use of Cronbach’s Alpha When Developing and Reporting Research Instruments in Science Education" paper for (Taber, 2016)

You usually verify and validate!

Always make multiple backups of everything. D. Booth

Wait a second: Your total N is 20, but you have about 90 items in your survey? This is never going to produce any meaningful results. Also, I doubt that the coping scale is unidimensional or do all 55 items really load onto one factor? If you wanted to report realiability measure such as Cronbach's Alpha, you would have to report them for each sub-scale seperately. I agree with Christian Geiser: You need to increase your sample size considerably.

Thank you Sir for this detailed answer and clearing my doubt. I too think the same but was little bit confused. Since I'm dealing with some specific problem where test is bit complicated an the way I want to use is a bit controversial and I doubt whether in that situation would I need to re-validate the test or else. I am basically working on Force Concept Inventory. I want to discuss more on this issue. you have time can we talk about it?

Perfect agreement

A reliable plasma marker of platelet activation: does it exist?

Musa Al-Shammari,

Thanks for sharing this piece of information. I don't know if there is room for a wait-and-see approach.

Regards

Hi Khalid for inter-coder reliability test, there are different formulas to use, like Scott's Pi, Krippendorff's alpha, Holsti's coefficient and Cohen's kappa. I recommend an online content analysis platform DiVoMiner® that you can do the reliability test with any of the above-mentioned formula. And there is free version if you don't have a large amount of data. Here are some video guides for every step: https://www.divominer.com/en/blog/2022/07/07/the-six-key-functions-of-divominer-2/

في حالة الاقتباس يكون جاهزا وليس للباحث اي نقطة عمل اي مباشرة للتطبيق اما اذا كان بدون علامات اقتباس فيكون مع من قبل الباحث حسب نوع المقياس والمعايير التي اعدت لهذا الغرض

Nova Science Publishers now listed under vanity press

According to the Office of Energy Efficiency and Renewable Energy, the following are some advantages of combining storage and solar energy:

1- Balancing electricity loads – Without storage, electricity must be generated and consumed at the same time, which may mean that grid operators take some generation offline, or “curtail” it, to avoid over-generation and grid reliability issues. Conversely, there may be other times, after sunset or on cloudy days, when there is little solar production but plenty of demand for power. Enter storage, which can be filled or charged when generation is high and power consumption is low, then dispensed when the load or demand is high. When some of the electricity produced by the sun is put into storage, that electricity can be used whenever grid operators need it, including after the sun has set. In this way, storage acts as an insurance policy for sunshine.

2-“Firming” solar generation – Short-term storage can ensure that quick changes in a generation don’t greatly affect the output of a solar power plant. For example, a small battery can be used to ride through a brief generation disruption from a passing cloud, helping the grid maintain a “firm” electrical supply that is reliable and consistent.

3-Providing resilience – Solar and storage can provide backup power during an electrical disruption. They can keep critical facilities operating to ensure continuous essential services, like communications. Solar and storage can also be used for microgrids and smaller-scale applications, like mobile or portable power units.

These are three emerging technologies:

1- Longer charges.

2- Saffer batteries.

3- Storing sunlight as heat.

Batteries are useful for short-term energy storage, and concentrated solar power plants could help stabilize the electric grid. However, utilities also need to store a lot of energy for indefinite amounts of time. This is a role for renewable fuels like hydrogen and ammonia.

Dear respected colleagues,

Related to this valuable discussion thread of Prof. Ashok Silwal, please let me point to another critical issue related to plagiarism software-detectors.

After about five months, his promotion process to associate professor was rejected because of plagiarism. When he checked the promotion report, he found that one of his papers was accused of plagiarism and with a 100% percentage. The reason is that his manuscript was checked by his co-author using one of these checkers. It took him several months time of following up to solve the problem and removing the manuscript from their database. After that long period, he re-applies the promotion order for the second time.

Therefore, plagiarism software may retain a copy of the manuscript in its database. To state the truth, this is depending upon the settings and type of account subscription.

So, you may face a similar situation when you submit your manuscript after plagiarism checking to a journal. It may be rejected instantly because it would show up 100% similarity index.

To solve the problem, it may take several months time of following up and removing the manuscript from their database.

If there were accusations of plagiarism, it is not well for your reputation, in any meaning.

In general, I would not expect such a large drop in reliability for removing 7 out of 355 observations. So, compare the correlation matrices from the full data set and the reduced data set.

Hi Christina Vogelaar

I briefly wanted to reach out concerning your inquiry. I would suggest to use the protocol the protocol from Gallagher et al. and combine IL-4 with anti-CD40 for stimulation.

As a negative control you may want to consider titrating in IL-21 as this will potently suppress IgE production as per

which broadly uses a similar B cell culture protocol. For a nice, fast and easy CSR flow cytometry staining protocol (albeit not specifically for IgE) check:

I hope that helps and good luck for your experiments.

All the best & kind regards,

Michael

Maybe the GIPR Antibody from CUSABIO works for you.

This GIPR Antibody had been validated in WB, IHC, and IF.

You can find more details at：

Did you find a dataset?

Borrowing from Kimberly Roenfeldt:

Geometric means are a robust and precise way to visualize the central tendency of a data set, particularly when examining skewed data or comparing ratios. Measures of central tendency are predominantly presented as arithmetic means or medians that are relatively simple to calculate and interpret, but may be inaccurate in representing data that are not strictly normal. Geometric means represent the best of both worlds, providing estimates that take into account all the observations in a data set without being influenced by the extremes.