Vaulted Scientific Challenges at Zombal
I am looking for a creative, open-minded physicist with experience publishing in top-tier scientific journals. Established, reputable scientist (professor at a leading university) needs help drafting (and/or co-authoring) an interdisciplinary paper for publication. Not sure how this works, but I'm willing to pay $10K to $40K for individual with the right qualifications
I'd like to seek funding for making an advanced 3d holographic unit that can project objects the size of a basketball or bigger, as real time as a television for many industries and purposes. I need an expert to help with the technical planning and 'rough' estimates for timing, costs, knowns, and unknowns
I received a DUI charge and had a dental procedure a couple of days before the DUI. The Dentist put Cavit G and Ultracal on my tooth and was in my mouth when I was tested. Will any of these ingredients cause my DUI to be abnormally high?
Ingredient C.A.S. No. % by Wt ZINC OXIDE 1314-13-2 30 - 50 CALCIUM SULFATE 7778-18-9 1 - 30 BARIUM SULFATE 7727-43-7 0 - 20 ETHYLENE BIS(OXYETHYLENE)DIACETATE 111-21-7 10 - 20 TALC 14807-96-6 0 - 20 ZINC SULFATE 7733-02-0 5 - 10 POLY(VINYL ACETATE) 9003-20-7 1 - 5 Calcium Hydroxide 1305-62-0 215-137-3 C; R36/38 35 Barium Sulfate 7727-43-7 231-784-4 R 36/38 20
We run an edutainment HIV/AIDS portal called Young Africa Live in South Africa, Kenya and Tanzania. For more information please look at our website http://praekeltfoundation.org/young-africa-live.html.
The primary objective of what we're trying to do is to increase sexually safe and responsible behaviour in youths age 18 to 25. In addition we aim to drive positive change in the preconceptions about gender and sexuality in this audience. For the past two years we've conducted surveys on the platform to determine our users' opinion on relationship and sexual practices. The results can be seen in these two PDFs:
http://www.praekeltfoundation.org/yal_survey/YAL_YouthSexSurvey_FullResults.pdf http://www.praekeltfoundation.org/docs/YALSexSurvey2012_PollsResults.pdf
Additionally, we record web analytics of user behaviour on the platform, including page impressions, number of comments posted and top articles that people have viewed. We have dashboards that show an overview of these analytics, an example dashboard for Tanzania can be seen here. Dashboards are also available for South Africa and Kenya. It may be possible to source more in-depth data if required by a data scientist.
We are looking for suggestions about how we can improve our practices to monitor change in user behaviour over time. We're also looking for additional survey questions or data that we should be collecting that would assist us in achieving this objective, as well as any suggestions for equating online measurements with real world behaviours.
In the future we're looking to employ a statistician to help analyse our data and make ongoing suggestions about improvements that we could be making. The best answers from this "bounty" will help us determine who we'd like to employ. If you require further information or need clarification on anything, feel free to post a clarification and we'll do our best to answer it.
Details are sought of methods of deriving human food from tree leaves. Rapid methods, using fermentation or fast-growing fungi, which could be used during droughts or in difficult areas are particularly wanted. In some parts of the world tree leaves are eaten directly, as 'tree greens', this is not included in the topic.
Fermentation is commonly used to render plant materials more palatable or edible, for example maize leaves are fermented in silos to give silage, fed to cattle. Some ants harvest leaves which they use to grow fungi in their nests for food.
In both cases, success may depend on specific strains or mixtures of fermentation microbes or fungi. Ideally, famine food sources could be provided by shipping in inoculated starter kits or fungus growth boxes. Sources of effective materials would be useful, but not required, for this zomb.
Fermentation processes should preferably yield edible product within 7 days, fungal processes within 6 weeks. (ZBL#151).
- Need a mathematical formula to establish a bid price, as simple as possible, to be translated to a excel spreadsheet, see enclosed spreadsheet. need to find X (bid price) which starts with 95% of "property values" column (L), before adding various variables to achieve a regressive profit margin from 45% at a $50,000 property value to 25% at $400,000. Needs to take into account a regressive deduction for the "Yr Built" starting from yr built 1965 at .33% to 0% at yr built 2002. e.g. row 3, property value 172,038 x.95%=163,431-J = X (based on initial property value >or= to45% to >or=to 20%)
I need assistance with a mixed methods study. While I am familiar with the SPSS, I am not an expert to ensure that my hypothesis, available data, and selected methodology are proper selected. I need help with the available tests in SPSS to test my hypothesis using the data. I will provide the hypothesis and data after your consideration.
It's usually said that the Sun emits radiation equally (and implied, with identical spectrum) in all directions. Is there any practical (non-theoretical) proof or disproof of this?
What I'm looking for is whether the Sun's emissions from its poles are any different (and if they differ in spectra) from its equatorial radiation. Please bid on this basis. (ZBL#150).
I am interested in being able to calculate how running a times ievents increase as a function of distance. There is a well known power law that describes this function whose exponent is about 1.1. The equation is T=cD to the n power where T is running time and D is distance. I'm attaching a paper on this which describes how the equation applies to world records in running. My interest is in seeing if the exponent is slightly different for different individual runners. So I would like to develop a program in which could enter data such as below, determine the exponent and then input a different distance to get a prediction of the the time for that distance
Distance (meters) Time (seconds) 3000 440 5000 772 10000 1610
In this paradox, an open circular bowl of mass Mb has its centre of gravity (O) a distance r above the centre of its floor (see attachment Bowl&Sphere.jpg). A sphere of mass Ms and radius r is placed in the bowl. This sphere also has its centre of gravity at O.
According to gravitational laws, the gravitational force F between the sphere and the bowl is Mb*Ms/d^2, where d is the distance between their centres of gravity.
In the present case, both bowl and sphere have their centres of gravity at the point O, so d=0, and the gravitational force between the objects is infinite. Explain this. (ZBL#149).
Calculations are wanted for the shape of the intensity/wavelength curve for particles in interstellar space emitting at a particular quantum wavelength (2mm). Assume particles are travelling within a range of velocities, and that their photons are red-shifted or blue-shifted according to their velocities relative to the observer. Assume the velocity distribution curve of the particles is one typical of gas particles, with a mean (root-square) velocity matching that of an observed CMBR line peaking around 2mm as in the curve supplied. Further details and situation sketch in the attached file ZBL142X.pdf. (ZBL#142).
Because all particles in the Universe are subject to mutual gravitational attraction, this "background" gravitation can be thought of as a type of viscosity.
Solar systems and galaxies rotate against this background according to gravitational laws as set down by Newton. That is, the individual bodies involved, such as the Sun and its planets, move in accordance with Newtonian laws of gravity.
In smaller systems, such as a solar system, the effect of this "background gravitation" may be completely negligible. With larger celestial assemblies, such as galactic clusters, the outer parts of these assemblies must be subject to drag from the background gravitation which increases with their peripheral velocity with respect to the centre of gravity of the assembly.
A framework is sought by which this background gravitation may be quantized. It might be treated as a sort of viscosity, as with a paddle-wheel rotating in a liquid, or as a type of field. Bids are invited for a framework concept. Offers for further development by mathematical modelling or otherwise would be welcome. (ZBL148).
Clarification is wanted for two aspects of the orbits of moons around planets.
1) Tidal forces are said to cause moons rotating outside the synchronous distance to recede away from the planet, while closer moons lose altitude and approach the planet. The synchronous distance is that at which a moon rotating above the equator in the direction of its rotation would appear stationary.
The catcher should locate and describe formulas for the rates of recession or approach, and use these formulas to calculate the current rates of recession and approach of the two small moons of Mars, Deimos and Phobos (Deimos has an orbital period of 30.3 hours, Phobos 7.6 hours [reference given], while Mars itself rotates in 24.63 hours).
2) What forces act to bring a moon's orbit around its primary to conform with the planet's own rotation, that is, are moons not orbiting strictly in the planet's equatorial plane moved towards conforming? Are there formulas to calculate this? As background, Saturn's main rings orbit strictly in its equatorial plane, while the outer Phoebe ring is tilted at 26.7 degrees to this plane. Do the formulas in (1) still apply for a moon in a retrograde orbit, in particular for Neptune's large moon Triton [reference given]?
Expanded details are given in the attached file ZBL147X.pdf.
The task is to calculate the average density of the Galaxy, using the following assumptions. First, find the average distances of the 6 nearest major galaxies to the Milky Way, and assume the Galaxy occupies a sphere of diameter half this average distance. Assume a galaxy is 'major' if its mass is greater than 50% of the Milky Way, otherwise minor.
Find figures for the mass of the Galaxy (including central black hole and minor/ satellite galaxies within the sphere) and any other matter amounting to more than 0.01% of this.
Divide the mass by the volume to get density (in gm per cubic centimetre).