Commuting - Science topic

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Is there any open-access source where I can find the emission factors for the Scope 3 components of an educational institution?

The components include:

chemical,

glassware,

capital goods,

computer accessories,

electronics and electrical products,

commuting and business travels,

refrigerants,

consumed water

transport

wastes

At what mileage does an electric vehicle be of more benefit that offset's the higher purchase price, compared to its ICE equivalent. This is a vehicle that is used for public commute, not personal errands. Thanks.

In the elementary quantum mechanics (QM) of a single particle responding to a given environment, the state of the particle can be specified by specifying a set of commuting (i.e., simultaneously knowable) observables. Examples of observables include energy and angular momentum. Although not simultaneously knowable, other examples include the three rectangular spatial coordinates and the three components of linear momentum. Each observable in QM is a real number and is an eigenvalue of some Hermitian operator. Now consider quantum field theory (QFT) which considers a field instead of a particle. First consider the classical (before introducing QFT operators) description of the state of the field at a selected point in time. This is the field amplitude at every spatial location at the selected time point. For at least some kinds of fields, the field amplitude at a given space-time point is a complex number. Now consider the QFT corresponding to the selected classical example of a field. Is the field amplitude an observable even when it is not a real number? It is not an eigenvalue of any Hermitian operator when not real. So if the field amplitude is an observable, there is no Hermitian operator associated with this observable. My guess (and my question is whether this guess is correct) is that the real and imaginary parts of the field amplitude are simultaneously knowable observables, with a Hermitian operator (assigned to each space-time point) for each. This would at least explain how the field amplitude can be an observable but not real and not have any associated Hermitian operator. Is my guess correct?

I'm looking for social science articles -- in English/German -- that focus on companies moving within a city/metropolitan area and associated changes in employees' residential location and daily commuting patterns. Papers dealing with issues of staff turnover as a result of intra-urban company relocation are also very welcome. The reading material will be used for a M.Sc. group research project.

Hello, I am having a hard time creating SOP and what Variables to consider in my study. Can you help me with what should I only consider for my SOP so that I can fully implement descriptive statistics? And can you suggest what descriptive statistic model/method to analyze the data that I will collect form the surveys (My research is about finding the influence of the COVID-19 Pandemic in a rail transit line and its commuters/passengers of urban transit(from my country, the Philippines)

This is what I came up with as of now:

The study was conducted and seek to answer the following questions:

1. What is the demographic profile of the respondents in terms of:

1.1. Age

1.2. Status (Student/Worker/Non-worker)

2. Impacts of Covid19-Pandemic to the Metro rail transit transportation system in terms of :

2.1 Safety

2.2 Travel-Time

2.3 Service

2.4 Economy

3. How do the public commuters adapt to the contemporary situation of railway transportation in terms of :

3.1 Convenience

3.2 Accessibility

3.3 New Guidelines

3.4 Limited Capacity

A** is the bidual of A equipped with Arens products.

How much release should be observe and why??

I am working on an academic paper and I did MLM. one of the reviewers asked me "MLM estimation results for male commuters: The McFadden R square (0.179) falls out of the range between 0.2 and 0.4, which seems not a good fit overall", so what should I do?

I am using PSCAD, kindly help me ASAP to find solution

There are 2 big issues, while doing our research

1. During implementation of our circuit, we are facing problem regarding the connection of Capacitor module into inverter side. How can we overcome this?

2. During implementation, we have to integrate the control section of Capacitor module as well. But, we don't much about the modules used in control. How can we overcome it?

Hello,

I would like to know what are the commutator systems that are being used in other labs for in-vivo neural recording (and stimulation) in rodents?

In the lab we tested some cheap non-motorized commutators such as adafruit's and moflon's. The initial mechanical resistance is very high for a mouse to easily make it turn.

I know there are some motorized options but they are super expensive (>4k) and/or super big (need to be installed in the ceiling)

Thank you!

Hi all,

We're planning to conduct an academic research in transportation& mobility sector - to understand the changes in travel behavior in post-Covid era. It would be great if any transportation& logistics experts can guide us on below questions.

1. This research will focus mainly on land transportation modes. But in most of the research studies I found that Railways is considered as a separate form from other modes. Any specific reasons for this? Is it appropriate to consider all land transportation modes together for our study?

2. Is it too early to assume that we have finally stepped into post-Covid era and to analyze commuter travel behavioral changes? Or better we conduct this after few months?

3. Also is it okay to connect our Research results to impacts in Supply-Chain Management? Because currently SCM is a heavily affected area in every other industry. So is it worth to include SCM and give some recommendations?

Thank you in advance.

It is well known that the origin of the Covid-19 epidemy did start in China at the end of 2019 and that by March 11th, the WHO declared the Pandemics. During the last few months, we have seen the best and the worst of our societies. We have seen politicians taking the most ridiculous paths denying the danger of the virus, to later on said that they knew what to do and that they were ready to act and protect the society. On the other hand, we have seen a few countries taking hard decisions to close down activities with the high risk of inducing financial crisis, but putting upfront the health of their people.

One thing that has been highlighted since an early stage of the lockdown was the decrease on the levels of air pollutants, later on with the reports of wildlife getting over places where they have not been seen in a very long while, and finally with the latest reports regarding the “ozone-hole” that has been recently reported. This is a critical moment for all of us to pay attention to what is happening, and how the large disruptions in our regular lives by the Sars-Cov-2 virus have had a positive impact on the environment. Among the lessons is the fact that many things that we do commuting, generating a large amount of pollutants, may be significantly reduced. How much of our compulsive use of resources can be reduced and avoided, having a positive impact both in our health and our environment? Certainly, this is not good news for everybody, especially those getting the financial benefit of our behavior. But as a society, we have a fantastic opportunity and I really hope to see specialists in all the fronts analyzing the positive impact of the changes during these months, and how we could adapt some of these changes to have a more sustainable world.

The ASTM D86 test provides a distribution of normal boiling points (Tb) on the commutative volume fraction distilled.

I have proved some property.

1. Idempotency,

2. Commutativity,

3. Associativity,

4. Absorption law,

5. Distributivity and

6. De Morgan's laws over complement.

what is the structure of this property?

With continuous urbanization in India, the travel demand for commuters is increasing, with varying trip patterns and longer commuting distances. So what is the key data-based intervention that needs to be addressed in Indian urban mobility landscape?

If we represent each of the small cubes in each face of a cube by a base 6 number (one of the 6 colors) , can we then represent the configuration of a cube by a 54 digit number (9 * 6) ?

Interestingly, the configurations could also be represented in terms of a base 6 number (representing the 6 operations ). Of course, in our case, things are ot commutative . How could this be related to diagonalization ?? The fully solved case reminds one of Jordan's normal form and Jordans block.

Could the above be related to problems in coding theory ?

My lab uses the Plexon optogenetic system, but we had an issue during our first experiment with the patch cable twisting, then breaking, resulting in a huge loss of light output. In addition, our mice do not seem to generate enough force to rotate the mounted commutator. Has anyone else had this issue/does anyone have a picture of their setup? Any help is appreciated.

There is a formula for the finite Hilbert operator but for the infinite Hilbert operator it is still unknown and an open problem.

Consider a system of two particles. The system was prepared (e.g., by some prior measurement) to have zero total spin. Another measurement is made, either immediately after the preparation or at a later time if Schrodinger evolution does not disturb the total spin of the system. This other measurement finds the spin of one particle to be "up" in some selected direction. We conclude that the spin of the other particle must be "down" relative to the same selected direction. However, this conclusion can only be valid if the measurement did not disturb the total spin of the two-particle system. I don't doubt that this is correct, but my problem is not knowing how to derive, from basic principles that I have learned, that the spin measurement of a single particle does not disturb the total spin of the two-particle system. Using more mathematical terminology, the problem is to show that an operator associated with single-particle spin (I'm not sure what that means for a two-particle system) commutes with the operator associated with total system spin. How can we show that these operators commute?

The question is simple:

Let A be associative real algebra and A⁽⁺⁾ the related jordan algebra with product A * B= 1/2(AB+BA). The centre of A⁽⁺⁾ denoted by z(A⁽⁺⁾ ) (set of ''operator commute'' i.e. J_a (x ) = x * a ) is it equal to A^c ?

where A^c is the set of elements belongs to A such that ab=ba for all b in A.

We have that A^c is contained in z(A⁽⁺⁾ ), but I dont know when it is equal.

we recall that if A is associative algebra of bounded linear operator on Hilbert space, for each a,b self adjoint operators we have (see Topping 1965 prop.1)

ab=ba if and only if J_a J_b = J_b J_a

Thank You

My question concersns operators on Hilbert spaces.

It is well-known that any family of mutually commuting compact self-adjoint operators can be simultaneously diagonalized. Is the same true for any family of mutually commuting bounded self-adjoint operators?

It has likert scale of 7 point. It says ," For evaluating the overall attitude of each respondent regarding bicycle use for commuting the sum of ratings of all the items was taken. Thus, the largest possible value for the overall assessment of attitude is (12 x 49) = 588 (fully embraces bicycle use) and the lowest possible value is (12 x 1) = 12 (totally against the use of bicycles). The average value is 271.1 (with standard deviation equal to 70.8)".

Here 12 means the number of questions that the authors used in the survey.

I am having trouble to find out the average value. How was the calculation done?

I am planning to conduct a study on commuting scenarios. For the study, I need to control the tiredness (fatigue), visual attention and crowdedness in order to simulate the actual commuting scenario (e.g. by bus). I have read some articles on Stroop effect, n-back test and Go/NoGo test to control the fatigue. But I don't know how to control the visual attention and crowdedness, I couldn't find more articles on this. Any suggestions?

At first glance such a question seems to be absurd, since the multiplication of imaginary units of quaternion basis is non-commutative. Nevertheless, as shown in [1], the quaternionic multiplication of the so-called quaternionic H-holomorphic functions behaves as commutative. All quaternionic H-holomorphic functions can be constructed by simple replacement of a complex variable as single whole by a quaternionic one in expressions for complex holomorphic functions, depending on only complex variable as single whole. Everyone can construct the quaternionic ℍ-holomorphic functions by such a replacement and thereafter verify their commutativity. For convenience, I cite (according to Theorem 2.4.1 in [1]) the proof of this fact in attached file. I would like here to draw attention to this fact and discuss it. Is this result unexpected for you? Are you aware of the other cases of the multiplicative commutativity of quaternionic functions? Could you comment on it?

Reference

[1] Parfenov, M., The Similarity between Rules for Essentially Adequate Quaternionic and Complex Differentiation, [viXra: Functions and Analysis], June 2018. Available: : vixra.org/abs/1806.0239

Suppose [C,H] =/=0 where C charge conjugation operator and H is the Hamiltonian. Give physical meaning .. If above relation is zero .Give physical meaning .

B.Rath

If A commutes with B, the problem is trivial, where we can determine

the eigenvalues of A + B by adding the eigenvalues of A and the eigenvalues of B that are corresponding to the same eigenvectors.

We assume A and B are non-commuting matrices.

Using the identity: tr(A+B) = tr(A)+ tr(B) , we obtain

Sum of eigenvalues of A + Sum of eigenvalues of B

= Sum of eigenvalues(A+B), which is not helpful to locate or approximate the eigenvalues of A + B.

If A and B are Hermitian matrices, Allen Knutson and Terence Tao, show excellent relations about the eigenvalues of A + B.

[ Honeycombs and sums of Hermitian matrices]. And many similar results obtained. What's up for the general case?

To make two square matrixs A and B satisfy the commutative law of multiplication, say, AB=BA, at least one of the following conditions is required:

Condition 1: A=B.

Condition 2: A=kI or B=kI. I refers to the Identity matrix.

Condition 3: Both A and B are diagonal matrices.

Any other conditions?

Hi Sir/ Madam,

currently i doing the research paper for commuting accident in Malaysia.i looking for questionnaire for fatigue and job factor among the motorcyclist in road accident/crashes?

How to conduct local level air quality dispersion modelling of locality based travel emissions. I have population level transport emissions of a locality, I want to estimate health impact of these emissions on the local population within that specific locality only.

I am using a 3 phase BLDC motor with current rating of 20 A and voltage rating of 18V. At the moment zero cross detection scheme has been employed in the floating phase for position detection of the rotor while two phases are energized at a time. In the start, motor is commutated for a predefined interval until a specific speed is reached. After that, the motor is commutated normally using BEMF detection method. The problem is sometimes commutation works fine and sometimes not. In other words it is not reliable. For example, i have to play a lot with the parameters so that commutation works fine until smooth BEMF signals are acquired. Still then, the results are not reliable.

How to proceed in this situation? any ideas or references would be appreciated!

Please read my paper commutative matrices and give remarks . Paper enclosed.

B.Rath

Hey,

i´m currently working on my master thesis about autonomous driving and how it does impact urban structures. Now i need to find a connection of the value of time, which decreases with AV and the overall time spent for car travelling. My idea is that if the value of time for a specific trip decreases for example commute than the willingness to spent more time in the car increases and therefore my fixed travel time budget increases. Do you know any literature that works on this issue?

Different stakeholders of transportation system are often found concerned with different aspects of it. For instance,

Based on their concerns, they have different expectations from the "Intelligent Transportation System". I am looking for these expectations from different perspectives especially for developing countries like India.

please tell good and reputed publication for book (commutative type book) which has less amount charge as publication ,

Thank you

Can anyone suggest me regarding the calculation of dimensions regarding the commutator used for a pmdc motor? How to calculate and conclude the current density and required dimensions with respect to the commutator and the brushes?

I am doing hard commutation of the converter for now, so it is expected that the converter will encounter problems in commutation. For that I am planning to use a clamp circuit. Do I still need RC snubbers across my devices. The application is of 230 V, and the devices are rated at 1000 V.

Also, if I am using a purely resistive load, will the circuit stray inductance be substantial enough to damage the switches in the absence of a clamp?

I am not providing any dead time, should that be fine?

Hemp Airlines (HA, “we fly high”) is about to buy 5 CFA3000 commuter jets. Each airplane costs $50 million. A friendly bank has put together a consortium to finance the deal. The consortium includes a 20% equity investment and an 80% debt component. The debt has an interest rate of 8% annually, and is a term loan over 10 years. At the end of each of the next 10 years, HA will pay a lease payment of $35 million. At the end of the 10-year lease term, Hemp has the option to buy the aircraft for $10 million each; it is anticipated that it will exercise this option in which the planes are priced at their anticipated fair market value. The airplanes will be depreciated on a straight-line basis over 5 years to zero salvage value. If the equity partner in the lease has a tax rate of 35%, what is its expected compound rate of return?

Everybody talks about UAV (personal or Taxi service) being a game changer to our way of traveling and commuting.

Looking at ongoing research activities and some early flight demonstrators I notice that most of them have multiple, unducted/open, and interacting rotors. Solely from a system noise point of view I would assume that this will probably be the least successful approach.

Are there any new conceptual designs that will even stand a chance if community noise exposure and annoyance is really a topic (aside of "certification" or legislation issues)?

I am attempting to do ex vivo imaging of mouse retinal tissue on a multi-photon microscope, but the microscope is located about 30 minutes away from where I dissect out the retina. I attempted to just transport the retina in an airtight tube (on ice) containing oxygenated Ames' medium (pH 7.4), but am not getting good images once the retina reaches its destination. My hypothesis is that the tissue is not surviving the 30 minute commute without bubbling Ames' medium.

Does anyone know of a portable carbogen (95% oxygen, 5% CO2) tank that I could buy for purposes of transporting my live retinal tissue? Or of any kind of special container I could use for these purposes? Any expertise on this matter would help me greatly. Thanks in advance!

I want to simulate the traffic flow of the existing commuter trains and proposed monorail system in city within the other modes of transportation (Street Network).

what is the best CPLD to implement the three step commutation method for matrix converter and what is the simplest method and circuit to have the current sign

Is the multiplication of positive definite and negative definite matrix is a positive definite matrix even if they do not commute.

I have that R is the k-algebra (k is a field) finitely generated by S={f1,...,fm}⊂k[x1,⋯,xn] and this set of polynomials is minimal with respect to inclusion (i.e., e do not have redundant elements). However, I know that the fi's are algebraically dependent. Can be the number m=|S| unique? What are the conditions?

I am calculating the cost of power electronic converters.

Which of the following two system needs better cooling for the same power and same current level? 

1. Voltage Source Converter (using IGBT)

2. Line commutated Converter (Using Thyristors)

The power level is between (1MW to 10 MW)

Which system has higher cost of heat removal system?

Hi everybody

I am trying to import a commuting time matrix (231x231) done in Qgis to use it instead a contiguity matrix in order to make the spatial analysis not based on distances but on time. However, when I arrive to the step "spmat import SPWMat using SPWMat.txt, replace normalize(row)" I have as error message: "Error in line 1 of file D:\Olarte\Documents\Pour_OrbiGis\distanceW_e2.csv" . I thought it was because of the type of the variables but it seems it is not the cause. Can you please help me? I am trying for two days to make this but I couldn't find the solution so if you can help me I will deeply appreciate of that.

All best,

let R be a commutative ring and every ideal maximal of R be cyclic(finitely generated by only one element of ideal).if every ideal of R is cyclic?

please help me my friends .

its necessary for me

Given that the spatial organization of the city is fixed (or worse, increasingly sprawled) what can we do to reduce the VMT needed for commuting? Are there signs that US style patterns will dominate in large cities?

The positive aspect of urban sprawl is cheaper property value compared to CBD. If one chooses to live in a suburb, obviously you would have a "committed cost" which is a travelling cost. But if one chooses to buy property in the city, it will be also known as a property investment wherein the value of the property will appreciate overtime.

This scenario is based on if your job or business opportunity is based at a CBD. Hence what are your opinions on the statement above?

I am looking for inernational examples of online- or paper-pencil-questionnaires regarding the employees' trips to work and back as well as business trips. These questionnaires should be standardised (offering a certain set of questions / variables) and available for any company or institution, interested in surveying the mobility behaviour of it's employees.

"Our western societies are becoming increasingly mobile": I always hear this statement. But which sort of mobility? Daily mobility? Circular migration? migration? etc.

I'm still not convinced because we have to better define what mobility is.

What's your position and what is the situation in your country?