Statement of the problem: The outline shapes of the dental arch, face, and tooth are esthetic factors used to determine the proper form of artificial teeth when selected for artificial prostheses.
Purpose: The purpose of this study was to investigate the quantitative relationships between the outlines of the face, the maxillary central incisor, and the maxillary arch by using Fourier analysis.
Material and methods: Frontal facial photographs and irreversible hydrocolloid impressions of the maxilla were obtained from 200 young, dentate individuals (100 men, 100 women) ages 22 to 28 years. On the resultant casts, standardized photographs were made for the dental arch and the maxillary central incisor. The outlines of the face, dental arch, and tooth were digitally traced and the digitized curved outlines were converted into X-Y coordinates with special software, which, in turn, were imported into Fourier Shape Descriptor software for harmonic analysis. The quantitative outputs of Fourier analyses were analyzed and tested with statistical software to investigate the differences across the shapes of the 3 outlines under study.
Results: Facial and tooth outlines were similar for each sex, although the similarity was stronger among the men. By contrast, no relationship was found between tooth and maxillary arch outlines or between face and maxillary arch outlines.
Conclusions: Face and tooth forms were quantitatively related. Therefore, face form may reliably guide the selection of artificial anterior tooth form in complete denture prostheses or any complex anterior restorations.
Governments and corporations are tracking how we go about our lives with a unique marker that most of us cannot hide or change: our own faces. Across the country, communities are pushing back with laws that restrain this dangerous technology. In response, some governments and corporations are claiming that these laws should only apply to some forms of face recognition, such as face identification, and not to others, such as face clustering.
We disagree. All forms of face recognition are a menace to privacy, free speech, and racial justice. This post explores many of the various kinds of face recognition, and explains why all must be addressed by laws.
Even if face identification technology is never used, face clustering and tracking technologies can threaten privacy, free speech, and equity. For example, police might use face-tracking technology to follow an unidentified protester from a rally to their home or car, and then identify them with an address or license plate database. Or police might use face clustering technology to create a multi-photo array of a particular unidentified protester, and manually identify the protester by comparing that array to a mugshot database, where such manual identification would have been impossible based on a single photo of the protester.
We expect that researchers will find the same kinds of unacceptable errors and bias in face tracking and clustering, as has already been found in face identification. Which is one more reason why privacy laws must address all forms of face recognition.
Mitigating the risks raised by the many forms of face recognition requires each of us to be empowered as the ultimate decision-maker in how our biometric data is collected, used, or shared. To protect yourself and your community from unconsented collection of biometric data by corporations, contact your representatives and tell them to join Senators Jeff Merkley and Bernie Sanders in advocating for a national biometric information privacy act.
In 2015, Leicestershire Police scanned the faces of 90,000 individuals at a music festival in the UK and checked these images against a database of people suspected of crimes across Europe. This was the first known deployment of Live Facial Recognition (LFR) at an outdoor public event in the...
By unanimous vote, San Francisco's public records appeals body ruled last night that the San Francisco Police Department (SFPD) violated state and local laws when it failed to respond adequately to EFF's requests for documents about face recognition and the department's relationship with the Northern California Regional Intelligence Center (NCRIC),...
Words are only a small portion of how we communicate with one another. Yet the value of other forms of communication is often overlooked. Learn more about four different types of communication, and how using them effectively can improve performance, morale, teamwork and success in your business.
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The two examples of the problems faced by the farmers is depletion of resources and problems regarding protection of the land. Subsidy plays the greater role in mitigating the problems of the farmers.
The biggest problems faced by the farmers are depletion of the resources, lack of modern technology, degradation of land, undervaluation of the farmlands, political issues etc.
Therefore, it can be concluded that subsidy brings 60% money benefits to the farmers and helps to solve all the issues faced by the farmers.
Euhedral crystals (also known as idiomorphic or automorphic crystals) are those that are well-formed, with sharp, easily recognised faces. The opposite is anhedral (also known as xenomorphic or allotriomorphic): a rock with an anhedral texture is composed of mineral grains that have no well-formed crystal faces or cross-section shape in thin section. Anhedral crystal growth occurs in a competitive environment with no free space for the formation of crystal faces. An intermediate texture with some crystal face-formation is termed subhedral.
Crystals that grow from cooling liquid magma typically do not form smooth faces or sharp crystal outlines. As magma cools, the crystals grow and eventually touch each other, preventing crystal faces from forming properly or at all.
Euhedral crystals have flat faces with sharp angles. The flat faces (also called facets) are oriented in a specific way relative to the underlying atomic arrangement of the crystal: They are planes of relatively low Miller index. This occurs because some surface orientations are more stable than others (lower surface energy). As a crystal grows, new atoms attach easily to the rougher and less stable parts of the surface, but less easily to the flat, stable surfaces. Therefore, the flat surfaces tend to grow larger and smoother, until the whole crystal surface consists of these plane surfaces. (See diagram on right.)
Verbal communication occurs when we engage in speaking with others. It can be face-to-face, over the telephone, via Skype or Zoom, etc. Some verbal engagements are informal, such as chatting with a friend over coffee or in the office kitchen, while others are more formal, such as a scheduled meeting. Regardless of the type, it is not just about the words, it is also about the caliber and complexity of those words, how we string those words together to create an overarching message, as well as the intonation (pitch, tone, cadence, etc.) used while speaking. And when occurring face-to-face, while the words are important, they cannot be separated from non-verbal communication.
The sketch outlined by a closed shape below should turn into a form/face/surface (you know what I mean), and USED to be a form/face/surface, but applying constraints somehow affected this. I don't have a clue why this is happening, and I haven't been able to fix this problem without changing vital constraints or dimensions. Can somebody offer some help for this issue?
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Giddens (pp. 154 ff.) discusses various levels of legitimacy, and how these might become established over a period of time. Where people develop uniform types of conduct, Weber refers to this as usage. Long established usages become customs. These can emerge within a group or society on the basis of continued interaction, and require little or no enforcement by any specific group. A stronger degree of conformity is convention, where the compliance is not just voluntary or customary, but where some sort of sanctions may exist for those who do not comply with convention. These may be informal sanctions, leading to mild disapproval, or they may be strong sanctions associated with discipline or ostracism. For example, various forms of dress associated with the workplace can become convention, or even be enforced as rules. Usage and custom often become the basis of rules, and violation of these may ultimately have some sanctions applied.
Weber defines authority as legitimate forms of domination, that is, forms of domination which followers or subordinates consider to be legitimate. Legitimate does not necessarily imply any sense of rationality, right, or natural justice. Rather, domination is legitimate when the subordinate accept, obey, and consider domination to be desirable, or at least bearable and not worth challenging. It is not so much the actions of the dominant that create this, but rather the willingness of those who subordinate to believe in the legitimacy of the claims of the dominant. 2b1af7f3a8