1. A digitally administered assignment comprising:
a workspace for a student; and
an internal automated grading code hidden from and not accessible by the student, the internal automated grading code configured to execute on an end user computing device to evaluate work performed by the student in the workspace.
2. The assignment of claim 1, wherein the internal automated grading code in the assignment executed on the end user computing device is a local computing device of the student that is configured to generate evaluation data to be submitted to an external computing device.
3. The assignment of claim 2, wherein the internal automated grading code in the assignment executed on the local computing device of the student is configured to provide a precheck of the assignment for completeness prior to automated evaluation of work performed by the student in the workspace.
4. The assignment of claim 2, wherein the internal automated grading code is configured to independently provide feedback to the student on work performed by the student in the workspace.
5. The assignment of claim 1, further comprising a task guide incorporated into the assignment, the task guide comprising instructions for tasks in the assignment.
6. The assignment of claim 5, further comprising tools in the task guide for navigating assignment tasks, in which a tool in the task guide is configured to allow the student to mark when a task is complete with the task guide.
7. The assignment of claim 1, further comprising a hidden unique student identifier embedded in the workspace, such that copying material from a first student’s workspace into a second student’s workspace also copies the hidden unique student identifier, thereby allowing the source of the copied material in the second student’s workspace to be traced.
8. A method for digitally administering an assignment comprises:
making an assignment with internal automated grading criteria available to a student; and
evaluating the assignment using the internal automated grading criteria on a local computing device of the student.
9. The method of claim 8, further comprising receiving, by a server, evaluation data produced by the internal automated grading criteria executed on the local computing device of the student.
10. The method of claim 9, further comprising logging actions taken by the student to complete tasks in the assignment, in which logged actions are included in the evaluation data.
11. The method of claim 8, in which the internal automated grading criteria comprises code in the assignment that is in hidden from and cannot be accessed by the student.
12. The method of claim 8, further comprising inserting a hidden unique student identifier in each assignment distributed to the student.
13. The method of claim 12, further comprising verifying student integrity by checking the hidden unique student identifier included in the evaluation data to determine if information has been copied from a first assignment to a second assignment.
14. A computer program product for digital assignment administration, the computer program product comprising:
a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising:
computer readable program code to define a workspace for a student; and
computer readable program code for execution by a local device of the student to automatically evaluate work performed by the student in the workspace.
15. The computer program product of claim 14, wherein the computer readable program code to define the workspace for the student comprises a hidden unique identifier in the workspace that is configured to be copied when work is copied from the workspace, wherein the hidden unique identifier provides evidence of the origin of work in the workspace.
16. The computer program product of claim 14, further comprising computer readable program code to define a task guide configured to sequentially display instructions for tasks in the assignment, indicate specific regions of the workspace that are to be used to accomplish the tasks, and allow the student to check off a task when complete and to move to the next task.
17. The computer program product of claim 14, further comprising computer readable program code configured to precheck an assignment of the student prior to submission, display status of the assignment of the student including incomplete or incorrect tasks, and to submit the assignment, in which submission of the assignment includes a hidden submission identifier.
18. The computer program product of claim 14, wherein the computer readable program code to automatically evaluate work performed by the student comprises:
editable rules to be applied to work performed by the student in the workspace; and
prefill values to replace values in the workspace of the student to test the generality of the students work,
19. The computer program product of claim 14, further comprising computer readable program code to submit performance data from students to a centralized repository and display the submitted data including an overall score, a score code, and number of steps taken by the student to perform the assignment.
20. The computer program product of claim 14, further comprising computer readable program code defining editable assignment templates and an assignment navigator to view and modify the editable assignment templates.
21. The computer program product of claim 14, in which the assignment navigator comprises an interface for globally and individually adjusting points in an assignment.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A process for making a catalyst for oxidation of an alkene to an alkene oxide comprising:
a) forming a slurry of a silver compound, water and one or more organic compounds having at least one functional group of the formula \u2014NX2, \u2014OX or (\u2550O) (\u2014OX) wherein X is hydrogen or an alkyl of one to three carbon atoms, X being the same or different, and wherein at least one functional group is bound to a terminal carbon;
b) contacting a support material with the slurry;
c) maintaining contact of the support material in the slurry for sufficient time for silver to be deposited on the support material;
d) removing liquid from the slurry to form dry solid particles; and
e) calcining the solid particles.
2. The process of claim 1 wherein the silver compound is an oxide, a salt or carboxylate.
3. The process of claim 2 wherein the silver compound is silver oxide, silver nitrate, silver carbonate, silver acetate, silver propionate, silver butyrate, silver oxalate, silver malonate, silver malate, silver, maleate, silver lactate, silver citrate or silver phthalate.
4. The process of claim 1 additionally comprising adding alkali metal salts in step a) or step b) or after step b), step c), step d) or step e).
5. The process of claim 4 wherein the alkali metals are chosen from the group consisting of potassium, sodium, rubidium and cesium.
6. The process of claim 4 wherein the alkali metal salts are carbonates, nitrates or nitrites.
7. The process of claim 4 wherein the alkali metal salt is potassium nitrate.
8. The process of claim 1 additionally comprising adding a halide compound in step a) or step b) or after step b), step c), step d) or step e).
9. The process of claim 8 wherein the halide compound is silver chloride.
10. The process of claim 1 additionally comprising adding an oxide, acid, carbonate, sulfate, halide, oxyhalide, hydroxyhalide, hydroxide or sulfide of gold, tungsten, rhenium, molybdenum, fluorine, thallium, yttrium, barium, cerium, cobalt, indium or niobium in step a) or step b) or after step b), step c), step d) or step e).
11. The process of claim 1 wherein the support material is an alkaline earth carbonate, an alkaline earth oxide and mixtures thereof.
12. The process of claim 1 wherein the support material is an alkaline earth carbonate of the formula ACO3 wherein A is any Group IIA element.
13. The process of claim 1 wherein the support material is calcium carbonate.
14. The process of claim 1 wherein the contact time is from 0 to 24 hours.
15. The process of claim 14 wherein the contact time is from 1 to 16 hours.
16. The process of claim 15 wherein the contact time is for one hour.
17. The process of claim 1 wherein the liquid is removed by heating, filtration, evaporation or spray drying.
18. The process of claim 1 wherein the liquid is removed by drying in air or an inert gas.
19. The process of claim 18 wherein drying is for one hour to twenty-four hours at a temperature from 110\xb0 C. to 250\xb0 C.
20. The process of claim 19 wherein drying is for four hours at 250\xb0 C.
21. The process of claim 1 wherein calcining is at a temperature of from about 100\xb0 C. to about 500\xb0 C. for a time of from about one hour to about four hours.
22. The process of claim 21 wherein the temperature is about 250\xb0 C. for six hours.
23. The process of claim 22 wherein the temperature is 110\xb0 C. for one hour and then increased by 5 C \xb0min to a temperature of 300\xb0 C. for additional calcination for four hours.
24. The process of claim 1 wherein the functional group is \u2014NH2, \u2014OH or \u2014OOH.
25. The process of claim 1 wherein the organic compound additionally comprises a functional group of the formula \u2014NX2, \u2014OX or (\u2550O)(\u2014OX) wherein X is hydrogen or an alkyl of one to three carbon atoms, X being the same or different, and wherein the functional group is bound to a carbon other than a terminal carbon.
26. The process of claim 1 wherein the organic compound is ethylenediamine, ethanolamine, ethylene glycol, propyl ether, propylene glycol (1,2-propanediol), trimethylene glycol (1,3-propanediol), 1-propanol, glycine, triethanolamine, triethylenediamine, triethylamine, diethylenediamine, malonic acid, propionic acid or citric acid.
27. The process of claim 1 wherein two organic compounds are selected from the group consisting of ethylenediamine, ethanolamine, ethylene glycol, propyl ether, propylene glycol (1,2-propanediol), trimethylene glycol (1,3-propanediol), 1-propanol, glycine, triethanolamine, triethylenediamine, triethylamine, diethylenediamine, malonic acid, propionic acid and citric acid.
28. The process of claim 27 wherein two organic compounds are selected from group consisting of ethylenediamine, ethanolamine and ethylene glycol.
29. The process of claim 28 wherein one organic compound is selected from group consisting of ethylenediamine and ethanolamine and the other organic compound is ethylene glycol.
30. The process of claim 1 wherein one organic compound is selected from the group consisting of ethylenediamine, ethanolamine, ethylene glycol, propylene glycol (1,2-propanediol), trimethylene glycol (1,3-propanediol), 1-propanol, glycine, triethanolamine, diethylenediamine and malonic acid.
31. The process of claim 1 wherein the silver concentration in the catalyst is 2 percent to 80 percent by weight.
32. The process of claim 31 wherein the silver concentration is from about 10 percent to 70 percent by weight.
33. The process of claim 32 wherein the silver concentration is from about 30 percent to 70 percent by weight.
34. The process of claim 33 wherein the silver concentration is about 54% by weight.
35. The process of claim 1 wherein the alkali metal is present in the catalyst in the amount of from about 0.01 to 5% by weight.
36. The process of claim 35 wherein the alkali metal is present in the amount of from about 2 to 5% by weight.
37. The process of claim 36 wherein the alkali metal is present in the amount of about 3% by weight.