A longitudinal approach to understanding course evaluations

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S. H. Ludlow to Mr. and Mrs. Aldrich, 18 December 1872

https://egrove.olemiss.edu/aldrichcorr_e/1034/thumbnail.jp

Writing Across the Chemical Engineering Curriculum at the University of North Dakota

In Order to Prepare Engineering Graduates with the Written and Oral Communication Skills Needed in their Professional Careers a Coordinated Writing Across the Curriculum (WAC) Program Has Developed in the Chemical Engineering Department at the University of North Dakota. the Students Practice and Develop their Skills with Writing Assignments in Both Lecture and Laboratory Courses from the First‐year Level through the Fourth‐year Capstone Design Course. the Coordinated Approach, especially in the Four‐semester Laboratory Sequence, Allows the Students to Develop their Skills by Building on Communication Experiences in Previous Courses. the WAC Program at UND Including Writing and Public Speaking Assignments is Described. 1994 American Society for Engineering Educatio

Letter from [Ludlow] & Abby H. Patton to John Muir, 1879 Oct 5.

[1][in margin: No 6, Wall street is our address] Palace Hotel. San Francisco, Oct 5th 1879.[Friend?] Muir, The last rays of the setting sun are shinging in to our window at the Palace and perhaps it is the last sunset we shall ever see in this city of the Golden Gate. I could not think of leaving the Pacific Coast without saying good bye to you who so much love all the world about here. California you may say has made you, and you in return have made California and you are both richer for having made each other. You will preside in staying up among the great glaciers and ice fields of the Sticheen, and cant come down to the level of common folks who have only sand lots, lone mountains and golden gates 00867 [3]Mrs [Marie?] Mason received your grasshopper autograph along with your own and wrote of you in such terms that would make your eyes look bright, and heart throb more [illegible], could you read what she [deleted: wrote]- has written = Long may you live & climb mountains and 00867[Page 2][2]to look at. Oh yes I forget we have had a great General and expresident and great American traveler for a week and a city full of red, white and blue flags floating from hill top to hill top. We have not known such an oration or so much p[illegible]tion since we sent our best bl[illegible] of the north to west out the accursed slavery Talk of atonement, who ever knew a more fearful atoning for sin than that our nation North and South East and West passed through in the great Rebellion. Mr Patton and I were among the enthusiastic to welcome General Grant. Now we are going in the morning to [star?] command. Stopping at Salt Lake City, Denver – Le[illegible]ville – St Louis & other points on the way to New York. We have read of you in the Bulletin and heard of you through Dr & Mrs Kendall. By the way how you enjoy little hils at the Missionaries. Hope they or the Indians wont kill you – Do write us and do come to New York and be [lionized?] a while[in margin: Your old friends and fellow [illegible] [passengers?][illegible] Mrs [Patton?]][in margin: 73] [4]to teach other people how to love them. When you come to see us we will sit on a blanket and sing [illegible] Buns songs while you give us the [illegible] [illegible] Scotch [accent?]. I write to say more [illegible] have you to se[illegible] Mr Patton and my love and [illegible] you I bless the day that our eyes saw you and the glories of Alaska.[in margin: your friend Abby [H. Patton?]

Letter from Ludlow & Abby H. Patton to John Muir, 1885 Oct 21.

[letterhead]Oct. 21 1885 Room 874Dear Mr Muir.The Palton\u27s are once again on the Pacific coast Do you wish to see them enough to call at this great wilderness of a hotel to see them? At Chico we called on General and Mrs. Bidwell who said you were married and living at Martinez on a ranch. I send this note at a venture, hoping for an answer soon, or to have a call from yourself and Mrs Muir. We may remain here a few weeks before going to southern California.Your old friends and fellow travelers, Ludlow and Abby H. Patto

Narrow Line Cooling and Momentum-Space Crystals

Narrow line laser cooling is advancing the frontier for experiments ranging from studies of fundamental atomic physics to high precision optical frequency standards. In this paper, we present an extensive description of the systems and techniques necessary to realize 689 nm 1S0 - 3P1 narrow line cooling of atomic 88Sr. Narrow line cooling and trapping dynamics are also studied in detail. By controlling the relative size of the power broadened transition linewidth and the single-photon recoil frequency shift, we show that it is possible to continuously bridge the gap between semiclassical and quantum mechanical cooling. Novel semiclassical cooling process, some of which are intimately linked to gravity, are also explored. Moreover, for laser frequencies tuned above the atomic resonance, we demonstrate momentum-space crystals containing up to 26 well defined lattice points. Gravitationally assisted cooling is also achieved with blue-detuned light. Theoretically, we find the blue detuned dynamics are universal to Doppler limited systems. This paper offers the most comprehensive study of narrow line laser cooling to date.Comment: 14 pages, 19 figure

Narrow Line Cooling: Finite Photon Recoil Dynamics

We present an extensive study of the unique thermal and mechanical dynamics for narrow-line cooling on the 1S0 - 3P1 88Sr transition. For negative detuning, trap dynamics reveal a transition from the semiclassical regime to the photon-recoil-dominated quantum regime, yielding an absolute minima in the equilibrium temperature below the single-photon recoil limit. For positive detuning, the cloud divides into discrete momentum packets whose alignment mimics lattice points on a face-centered-cubic crystal. This novel behavior arises from velocity selection and "positive feedback" acceleration due to a finite number of photon recoils. Cooling is achieved with blue-detuned light around a velocity where gravity balances the radiative force.Comment: 4 pages, 3 figures, Phys. Rev. Lett., in pres

Teaching Statistical Experimental Design using a Laboratory Experiment

An Experimental Project Introduces the Concepts of Statistical Experimental Design to Undergraduates in a Laboratory Setting. a Safe, Inexpensive and Easily Operable Experiment Uses a Gas Chromatograph to Give Quantitative Results and to Allow Students to Concentrate on Applying Statistical Skills Without Being Impeded by Complex Equipment or Experimental Methods. One of the Unique Aspects of the Experiment is a Trade‐off between the Two Most Significant Variables, Forcing Students to Compromise in the Selection of Optimum Conditions. Such Compromises Are Typical in Many Real‐world Industrial Situations. the Experiment Has Been Used for Several Years in the Undergraduate Chemical Engineering Laboratories at the University of North Dakota. Keywords: Statistics, Experimental Design, Laboratory. 1995 American Society for Engineering Educatio

Assessing Content Knowledge and Changes in Confidence and Anxiety Related to Economic Literacy in a Professional Development Program for History Teachers

The purpose of this study was to determine the impact of a Teaching American History professional development program on content knowledge, and confidence and anxiety associated with teaching economic literacy. Two content assessments and a confidence and anxiety instrument were administered to teachers prior to and immediately following a two-week Summer Institute. Statistically significant findings included an increase in economics content knowledge and an increase in confidence combined with a decrease in anxiety. The scale and measurement model employed to examine status and subsequent change should be useful for similar professional development initiatives and evaluations

Two-photon absorption in potassium niobate

We report measurements of thermal self-locking of a Fabry-Perot cavity containing a potassium niobate (KNbO3) crystal. We develop a method to determine linear and nonlinear optical absorption coefficients in intracavity crystals by detailed analysis of the transmission lineshapes. These lineshapes are typical of optical bistability in thermally loaded cavities. For our crystal, we determine the one-photon absorption coefficient at 846 nm to be (0.0034 \pm 0.0022) per m and the two-photon absorption coefficient at 846 nm to be (3.2 \pm 0.5) \times 10^{-11} m/W and the one-photon absorption coefficient at 423 nm to be (13 \pm 2) per m. We also address the issue of blue-light-induced-infrared-absorption (BLIIRA), and determine a coefficient for this excited state absorption process. Our method is particularly well suited to bulk absorption measurements where absorption is small compared to scattering. We also report new measurements of the temperature dependence of the index of refraction at 846 nm, and compare to values in the literature.Comment: 8 pages. To appear in J. Opt. Soc. Am.