海外 加拿大 狮子座
|人生格言||中国交通很行 中国农业很行 中国工商很行 中国建设很行 中国人民很行 中国很行|
答案: Class I, Class V & Class VI 一类, 五类和六类洞
Cavity classification standardized methods of recording the need for restoration exist to facilitate communication among clinicians, researchers, and dental educators. The most commonly accepted means of classifying cavities is by the names of the surfaces involved. Cavity type is classified further based on the type of treatment and anatomical area involved. This classification, developed by Dr. G. V. Black in 1908, is designated by Roman numerals as Class I, Class II, Class III, Class IV, Class V, and Class VI (this is the only category that has been added to his original classification system). Note: It is important to remember that the classification relates to location and not size of the cavity.
# Class I cavities -> involve the pits and fissures, while all other classifications involve smooth surfaces
of the teeth.
# Class II cavities -> involve the proximal surfaces and occlusal surfaces of premolars and molars.
# Class III cavities -> involve the proximal surfaces of incisors and canines that do not involve the
# Class IV cavities -> are located on the proximal surface of incisors and canines and do involve
the incisal angle.
# Class V cavities -> are on the facial or lingual surface of ail teeth and do not involve a pit or fissure.
# Class VI cavities -> are on the incisal edges of anterior teeth or on the occlusal cusp heights of
** Remember: The best method for definitive detection of incipient carious lesions on the interproximal surfaces of posterior teeth (distal surface of canines through molars) is by bite-wing radiographs.
2)洞角：两个洞壁相交构成的角称为线角(Line angles)，三个洞壁相交形成的角称为点角(Point angles)。线角及点角的命名
切端为I(incisive S．)颊侧为B(buccal S．)
舌侧为L(lingual S．)牙合面为O(occlusal S．)
唇侧为La(labial S．)近中面为M(medial S．)，远中面为D(distal S．)等。
To avoid jeopardizing the integrity of the NDEB exams. MOST high yield questions are hidden.
您在此阅读到的医学相关文字和图片资料均为自学用途, 不能确保时效性和正确性， 请勿对号入座对自身或者他人疾患行使诊治。 谢谢！！
Based on a small electret condenser capsule, the ECM8000 omnidirectional mic is billed as a measurement mic due to the flat frequency response of the capsule. In combination with appropriate test hardware, it can be used to benchmark loudspeakers, diagnose room modes, and so on.
Unsubstantiated reports state that the mic is, or was, manufactured by Tenlux.
The microphone body is physically identical to a 6mm measurement omni made by MBHO, the MBNM 550 EL. Another mic sharing this body is the Audix TR40.
Harvey Gerst, 2001
[The ECM8000s] are identical to the Audix TR-40, except in 3 areas: They’re silver, not black, they have gold XLR contacts, and they say Behringer on the barrel, not Audix. The plastic storage box is almost identical to the Audix as well (except a little taller). Listening to the self noise and sensitivity, they seem to be absolutely identical to the Audix TR-40.
The capsule has been reported to look like a Panasonic WM60-A, although Scott Dorsey has stated “it’s not a Panasonic capsule,” and further, “the capsule the Behringer [ECM8000] uses is a Chinese knockoff of the Japanese capsule design that [the] Earthworks [QTC1] uses. It’s a surprisingly good knockoff, though, considering it probably costs less than a quarter.”
The same rec.pro.audio exchange revealed that the ECM8000 (and QTC1/QTC40) have high levels of self-noise, in the neighborhood of 22-23 dB:
The ECM 8000 has almost white noise between 300 Hz and 15 kHz, dropping then with 6 dB per octave. Between 300 Hz and 30 Hz the self noise rises by 18 dB at lower frequencies. Thus, the self noise of the ECM 8000 sounds like a mixture of pink and white noise.
Reports around the web indicate that Behringer has released two versions of this mic, one with a transformer and balanced output and the other with an integrated circuit-based, transformerless output. No model number or serial number designation has been made to identify this design change.1, 2
An extensive and popular thread on homerecording.com details a monthlong odyssey by Marik (Mark Fouxman) to improve the ECM8000; see the sidebar link or jump to page 5 to read the results… unfortunately, the thread is, at this point, surprisingly unsatisfying in that the links to the sound clips are failing and there’s no real review of the modded mic.
See also the schematic for Marik’s ECM8000 mod, formerly hosted here (the link died in early 2011):
The mic ships in a hard case with a mic clip.
Terms that denote mental deficiency have been subjected to the euphemism treadmill. The several traditional terms that long predate psychiatry are simple forms of abuse in common usage today; they are often encountered in such old documents as books, academic papers, and census forms (for example, the British census of 1901 has a column heading including the terms imbecile and feeble-minded).
Negative connotations associated with these numerous terms for intellectual disability reflect society's attitude about the condition. Some elements of society seek neutral medical terms, while others want to use such terms as weapons of abuse.
Today, new words like special or challenged are replacing the term retarded. The term developmental delay is popular among caretakers and parents of individuals with intellectual disability because delay suggests that a person is slowly reaching his or her full potential rather than being disabled.
Usage has changed over the years and differed from country to country. For example, mental retardation in some contexts covers the whole field but previously applied to what is now the mild MR group. Feeble-minded used to mean mild MR in the UK, and once applied in the US to the whole field. "Borderline intellectual functioning" is not currently defined, but the term may be used to apply to people with IQs in the 70s. People with IQs of 70 to 85 used to be eligible for special consideration in the US public education system on grounds of intellectual disability.
The "American Association on Mental Retardation" continued to use the term mental retardation until 2006. In June 2006 its members voted to change the name of the organization to the "American Association on Intellectual and Developmental Disabilities," rejecting the options to become the AAID or AADD. Part of the rationale for the double name was that many members worked with people with pervasive developmental disorders, most of whom do not have intellectual disability.
Sharable Content Object Reference Model (SCORM) is a collection of standards and specifications for web-based e-learning. It defines communications between client side content and a host system (called "the run-time environment"), which is commonly supported by a learning management system. SCORM also defines how content may be packaged into a transferable ZIP file called "Package Interchange Format."
SCORM 2004 introduced a complex idea called sequencing, which is a set of rules that specifies the order in which a learner may experience content objects. In simple terms, they constrain a learner to a fixed set of paths through the training material, permit the learner to "bookmark" their progress when taking breaks, and assure the acceptability of test scores achieved by the learner. The standard uses XML, and it is based on the results of work done by AICC, IMS Global, IEEE, and Ariadne.
SCORM (Shareable Content Object Reference Model)，译做共享内容对象参考模型或共享组件引用模式，由ADL (Advanced Distribution Learning Initiative)集成各个学习标准制定而成。对数字内容教材的制作、内容开发提供一套共通的规范。ADL项目的主旨是在美国联邦政府各个部门、企业、军事、教育和培训机构之间协同合作，为模块化网上教育内容和有关的工具创造业务和市场。美国政府在订定SCORM时，特别强调不再重新研发轮子（Don't reinvent the wheel）。意思是不会提出新的规格，而是把重点摆在提出集成现有E-learning规范的架构模型。SCORM的演进由SCORM 1.0、SCORM 1.1、SCORM 1.2到SCORM 2004。
SCORM 1.1 is the first production version. It used a Course Structure Format XML file based on the AICC specifications to describe content structure, but lacked a robust packaging manifest and support for metadata. Quickly abandoned in favor of SCORM 1.2.
This was the first version that was widely used. It is still widely used and is supported by most Learning Management Systems.
This is the current version. It is based on new standards for API and content object-to-runtime environment communication, with many ambiguities of previous versions resolved. Includes ability to specify adaptive sequencing of activities that use the content objects. Includes ability to share and use information about the success status for multiple learning objectives or competencies across content objects and across courses for the same learner within the same learning management system. A more robust test suite helps ensure good interoperability.
The Tin Can API was finalized to version 1.0 in April 2013 and had its name changed to "Experience API" (xAPI) and "Next Generation SCORM." The Tin Can API solves many of the problems inherent with older versions of SCORM. Just like SCORM, ADL is the steward of the Tin Can API. AICC with their CMI-5 will be using xAPI as their transport standard.
The Tin Can API is a web service that allows software clients to read and write experiential data in the form of “statement” objects. In their simplest form, statements are in the form of “I did this”, or more generally “actor verb object”. More complex statement forms can be used. There is also a built-in query API to help filter recorded statements, and a state API that allows for a sort of “scratch space” for consuming applications. Tin Can API statements are stored in a data store called a Learning Record Store, which can exist on its own or within a Learning Management System.