scholarly journals Understanding the Impact of Encrypted DNS on Internet Censorship

2021 ◽  
Author(s):  
Lin Jin ◽  
Shuai Hao ◽  
Haining Wang ◽  
Chase Cotton
Keyword(s):  
Internet Censorship ◽  
The Impact

A Comparative View of Censored and Uncensored Political Discussion

2017 ◽  
pp. 269-282
Author(s):  
Qihao Ji
Keyword(s):  
Social Media ◽  
Content Analysis ◽  
Future Research ◽  
Chinese Government ◽  
Political Discussion ◽  
Time Period ◽  
Social Media Platforms ◽  
Internet Censorship ◽  
Media Discourses ◽  
The Impact

Through a content analysis on Chinese online dissidents' social media discourses, this study examines the impact of Internet censorship on Chinese dissidents' political discourse in two social media platforms: Weibo and Twitter. Data was collected during a time period when China's Internet censorship was tightened. Results revealed that Chinese online dissidents are more likely to post critical opinions and direct criticism towards the Chinese government on Twitter. In addition, dissidents on Twitter are more likely to engage in discussing with others, while Weibo dissidents tend to adopt linguistic skills more often to bypass censorship. No difference was found in terms of dissidents' civility and rationality across the two platforms. Implications and future research are discussed in detail.

A Comparative View of Censored and Uncensored Political Discussion

2019 ◽  
pp. 1439-1453
Author(s):  
Qihao Ji
Keyword(s):  
Social Media ◽  
Content Analysis ◽  
Future Research ◽  
Chinese Government ◽  
Political Discussion ◽  
Time Period ◽  
Social Media Platforms ◽  
Internet Censorship ◽  
Media Discourses ◽  
The Impact

Through a content analysis on Chinese online dissidents' social media discourses, this study examines the impact of Internet censorship on Chinese dissidents' political discourse in two social media platforms: Weibo and Twitter. Data was collected during a time period when China's Internet censorship was tightened. Results revealed that Chinese online dissidents are more likely to post critical opinions and direct criticism towards the Chinese government on Twitter. In addition, dissidents on Twitter are more likely to engage in discussing with others, while Weibo dissidents tend to adopt linguistic skills more often to bypass censorship. No difference was found in terms of dissidents' civility and rationality across the two platforms. Implications and future research are discussed in detail.

E-commerce mercantilism-practices and causes

2020 ◽  
Vol 19 (1) ◽  
pp. 51-66
Author(s):  
C.Y. Cyrus Chu ◽  
Po-Ching Lee
Keyword(s):  
Waiting Times ◽  
Internet Access ◽  
Content Type ◽  
Hard Evidence ◽  
Internet Retail ◽  
Internet Censorship ◽  
The Impact ◽  
Potential Customers ◽  
Rule Making ◽  
Practical Implications

Purpose This paper aims to highlight in particular one commercially influential but subtle constituent of China’s mercantilist stratagem – asymmetrical internet access. The wider aim of the paper is to provide a solid basis of real-world facts and knowledge to the e-commerce discussions at the World Trade Organization and the ongoing plurilateral e-commerce negotiations. Design/methodology/approach This paper uses an empirical approach to reflect the general experiences of consumers connecting from China to e-commerce platform websites in other countries and vice versa consumers connecting from other countries to China’s e-commerce platform. Findings The empirical data show that Chinese potential customers trying to connect to the websites of foreign internet retailers in 17 other sample countries are faced with prohibitively long waiting times. In contrast, the average waiting time that it takes for customers in those other 17 countries to link up to China’s major internet retail platforms is much shorter. Practical implications The hard evidence presented here serves to strengthen the arguments that such internet censorship is used by China to establish unfair e-commerce advantage. This paper further argues that the General Agreement on Trade in Services is restrained from providing systemic solutions to the digital mercantilism problem. It is essential, therefore, that the ongoing plurilateral e-commerce negotiations address this issue. Originality/value This paper is the first to publish detailed results of a systematic survey designed to analyze the impact of asymmetrical internet access in China. It is also the first to examine the extent and effect of differing internet connection speeds in the context of international trade. The outcome of the survey provides a factual base for future rule-making at the multilateral level.

Formation of Lunar Craters and Bright Rays as a Result of Meteorite Impacts

1962 ◽  
Vol 14 ◽  
pp. 415-418
Author(s):  
K. P. Stanyukovich ◽  
V. A. Bronshten
Keyword(s):  
Explosive Charge ◽  
The Moon ◽  
Meteorite Impacts ◽  
The Earth ◽  
Lunar Craters ◽  
The Impact

The phenomena accompanying the impact of large meteorites on the surface of the Moon or of the Earth can be examined on the basis of the theory of explosive phenomena if we assume that, instead of an exploding meteorite moving inside the rock, we have an explosive charge (equivalent in energy), situated at a certain distance under the surface.

The Geosciences Applied to Lunar Exploration

1962 ◽  
Vol 14 ◽  
pp. 169-257 ◽  
Author(s):  
J. Green
Keyword(s):  
Lunar Surface ◽  
Probable Mechanism ◽  
Point Of View ◽  
Lunar Exploration ◽  
Geological Model ◽  
Apply Geophysics ◽  
Surface Features ◽  
The Impact

The term geo-sciences has been used here to include the disciplines geology, geophysics and geochemistry. However, in order to apply geophysics and geochemistry effectively one must begin with a geological model. Therefore, the science of geology should be used as the basis for lunar exploration. From an astronomical point of view, a lunar terrain heavily impacted with meteors appears the more reasonable; although from a geological standpoint, volcanism seems the more probable mechanism. A surface liberally marked with volcanic features has been advocated by such geologists as Bülow, Dana, Suess, von Wolff, Shaler, Spurr, and Kuno. In this paper, both the impact and volcanic hypotheses are considered in the application of the geo-sciences to manned lunar exploration. However, more emphasis is placed on the volcanic, or more correctly the defluidization, hypothesis to account for lunar surface features.

Asteroid and Comet Impact Speeds upon Mars: Significance for Panspermia and the Supply of Organics

1997 ◽  
Vol 161 ◽  
pp. 197-201 ◽  
Author(s):  
Duncan Steel
Keyword(s):  
Probability Distributions ◽  
Regions Of Interest ◽  
Significant Fraction ◽  
Organic Chemicals ◽  
Impact Speed ◽  
The Mean ◽  
The Impact

AbstractWhilst lithopanspermia depends upon massive impacts occurring at a speed above some limit, the intact delivery of organic chemicals or other volatiles to a planet requires the impact speed to be below some other limit such that a significant fraction of that material escapes destruction. Thus the two opposite ends of the impact speed distributions are the regions of interest in the bioastronomical context, whereas much modelling work on impacts delivers, or makes use of, only the mean speed. Here the probability distributions of impact speeds upon Mars are calculated for (i) the orbital distribution of known asteroids; and (ii) the expected distribution of near-parabolic cometary orbits. It is found that cometary impacts are far more likely to eject rocks from Mars (over 99 percent of the cometary impacts are at speeds above 20 km/sec, but at most 5 percent of the asteroidal impacts); paradoxically, the objects impacting at speeds low enough to make organic/volatile survival possible (the asteroids) are those which are depleted in such species.

Organic Syntheses During the Impact of a Comet with a Gaseous Planet

1997 ◽  
Vol 161 ◽  
pp. 189-195
Author(s):  
Cesare Guaita ◽  
Roberto Crippa ◽  
Federico Manzini
Keyword(s):  
Polymeric Material ◽  
Molecular Form ◽  
Parent Compound ◽  
Blue Filter ◽  
Organic Syntheses ◽  
The Impact

AbstractA large amount of CO has been detected above many SL9/Jupiter impacts. This gas was never detected before the collision. So, in our opinion, CO was released from a parent compound during the collision. We identify this compound as POM (polyoxymethylene), a formaldehyde (HCHO) polymer that, when suddenly heated, reformes monomeric HCHO. At temperatures higher than 1200°K HCHO cannot exist in molecular form and the most probable result of its decomposition is the formation of CO. At lower temperatures, HCHO can react with NH3 and/or HCN to form high UV-absorbing polymeric material. In our opinion, this kind of material has also to be taken in to account to explain the complex evolution of some SL9 impacts that we observed in CCD images taken with a blue filter.

Hydrogen Cyanide Polymers from the Impact of Comet P/Shoemaker-Levy 9 on Jupiter

1997 ◽  
Vol 161 ◽  
pp. 179-187
Author(s):  
Clifford N. Matthews ◽  
Rose A. Pesce-Rodriguez ◽  
Shirley A. Liebman
Keyword(s):  
Amino Acids ◽  
Solar System ◽  
Hydrogen Cyanide ◽  
Nitrogen Heterocycles ◽  
Laboratory Studies ◽  
Heterogeneous Solids ◽  
The Many ◽  
Comet Halley ◽  
The Impact ◽  
By Products

AbstractHydrogen cyanide polymers – heterogeneous solids ranging in color from yellow to orange to brown to black – may be among the organic macromolecules most readily formed within the Solar System. The non-volatile black crust of comet Halley, for example, as well as the extensive orangebrown streaks in the atmosphere of Jupiter, might consist largely of such polymers synthesized from HCN formed by photolysis of methane and ammonia, the color observed depending on the concentration of HCN involved. Laboratory studies of these ubiquitous compounds point to the presence of polyamidine structures synthesized directly from hydrogen cyanide. These would be converted by water to polypeptides which can be further hydrolyzed to α-amino acids. Black polymers and multimers with conjugated ladder structures derived from HCN could also be formed and might well be the source of the many nitrogen heterocycles, adenine included, observed after pyrolysis. The dark brown color arising from the impacts of comet P/Shoemaker-Levy 9 on Jupiter might therefore be mainly caused by the presence of HCN polymers, whether originally present, deposited by the impactor or synthesized directly from HCN. Spectroscopic detection of these predicted macromolecules and their hydrolytic and pyrolytic by-products would strengthen significantly the hypothesis that cyanide polymerization is a preferred pathway for prebiotic and extraterrestrial chemistry.

Unusual Microstructure in Shock-Compacted Graphite

1970 ◽  
Vol 28 ◽  
pp. 474-475
Author(s):  
Lucien F. Trueb
Keyword(s):  
Mechanical Characteristic ◽  
Compression Wave ◽  
Gray Zone ◽  
Flyer Plate ◽  
Compacted Graphite ◽  
The Impact

Crushed and statically compressed Madagascar graphite that was explosively shocked at 425 kb by means of a planar flyer-plate is characterized by a black zone extending for 2 to 3 nun below the impact plane of the driver. Beyond this point, the material assumes the normal gray color of graphite. The thickness of the black zone is identical with the distance taken by the relaxation wave to overtake the compression wave.The main mechanical characteristic of the black material is its great hardness; steel scalpels and razor blades are readily blunted during attempts to cut it. An average microhardness value of 95-3 DPHN was obtained with a 10 kg load. This figure is a minimum because the indentations were usually cracked; 14.8 DPHN was measured in the gray zone.

Drug Induced Changes in Cell Organelles

1968 ◽  
Vol 26 ◽  
pp. 110-111
Author(s):  
Sarah A. Luse
Keyword(s):  
Clinical Medicine ◽  
Cell Organelles ◽  
Riboflavin Deficiency ◽  
Drug Induced ◽  
New Era ◽  
Health And Disease ◽  
In The Beginning ◽  
Cellular Pathology ◽  
Induced Changes ◽  
The Impact

In the mid-nineteenth century Virchow revolutionized pathology by introduction of the concept of “cellular pathology”. Today, a century later, this term has increasing significance in health and disease. We now are in the beginning of a new era in pathology, one which might well be termed “organelle pathology” or “subcellular pathology”. The impact of lysosomal diseases on clinical medicine exemplifies this role of pathology of organelles in elucidation of disease today.Another aspect of cell organelles of prime importance is their pathologic alteration by drugs, toxins, hormones and malnutrition. The sensitivity of cell organelles to minute alterations in their environment offers an accurate evaluation of the site of action of drugs in the study of both function and toxicity. Examples of mitochondrial lesions include the effect of DDD on the adrenal cortex, riboflavin deficiency on liver cells, elevated blood ammonia on the neuron and some 8-aminoquinolines on myocardium.

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