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--- Unit 1
Ghosts for Tea
1 “Ten pence for a view over the bay”, said the old man with the telescope. “Lovely clear
morning. Have a look at the old lighthouse and the remains of the great shipwreck of 1935. ”“十便士看一次海湾风光，”那个带着一架望远镜的老头说道。“多么晴朗美丽的早晨。请来看看那古老的灯塔和1935年失事的大轮船残骸吧。”
2 Ten pence was sheer robbery, but the view was certainly magnificent.要十便士简直是敲诈勒索，可是海湾的景色确实壮丽。
3 Cliffs stretched into the distance, sparkling waves whipped by the wind were unrolling on
to the beach, and a few yachts, with creamy-white sails, were curving and dodging gracefully on
the sea. Just below, a flock of seagulls were screaming at one another as they twisted and
glided over the water. A mile out to sea, the old lighthouse stood on a stone platform on the
rocks, which were being greedily licked by the waves. In no way indeed did I grudge my money.
1. Complements. Write the complementary sequence (in the standard 5’→3’ notation) for
(a) GATCAA, (b)TCGAAC, (c) ACGCGT, and (d) TACCAT.
2. Compositional constraint. The composition (in mole-fraction units) of one of the strands
of a double-helical DNA molecule is [A] = 0.30 and [G] = 0.24. (a) What can you say
about [T] and [C] for the same strand? (b) What can you say about [A], [G], [T], and [C] of
the complementary strand?
3. Lost DNA. The DNA of a deletion mutant of bacteriophage has a length of 15 μm
instead of 17 μm. How many base pairs are missing from this mutant?
4. An unseen pattern. What result would Meselson and Stahl have obtained if the
replication of DNA were conservative (i.e., the parental double helix stayed together)?
Give the expected distribution of DNA molecules after 1.0 and 2.0 generations for
Chapter 1
Geomatics 测绘学
Surveying 测量学
Geodesy 测地学
Geosciences 地球科学
Surveying and mapping 测绘学
Surveying and mapping engineering 测绘工程
Geoinformatics 地理信息学
Geodetic network 大地控制网
Land Surveyor 土地测量员
Photogrammetriest 摄影测量员
Practitioner 从业者
Topographic map 地形图
Geographic information system
地理信息系统
Aerial photogrammetry 航空摄影测量学
Remote sensing 遥感
Cartography 地图制图学
Computer graphics
计算机图形学
Global navigation satellite system GNSS
Global position system GPS
Environmental visualization 环境可视化
Geographic information system GIS
Geographic referenced information 地理参考信息
Landforms 地形
Underground geological structure 地下地质构造
Hydrology 水文学
Mineral resources 矿产资源
Topographic maps 地形图
Geodynamic phenomena 地球动力学现象
Polar motion 极移
Crustal motion 地壳运动
Earth tides 地球潮汐
Sphere 球（体）
Spheroid 球体
Ellipse 椭圆
Ellipsoid 椭圆体，椭球
水膜的快速仿真
I. Introduction
- Background and significance of quick water film simulation
- Previous research on water film simulation
- Objectives of the current study
II. Methodology
- Overview of the simulation model and algorithm
- Mathematical equations used in the simulation
- Data input and initial conditions
III. Results
- Investigation of the quick water film simulation under various
conditions
- Simulation results compared to experimental data
- Analysis of the effect of different parameters on the simulation
results
IV. Discussion
- Interpretation of the results with respect to the research objectives
- Limitations and issues encountered in the simulation
- Comparison of the results to previous research
V. Conclusion
- Summary and implications of the study
- Recommendations for further research
