10,886 Matching Annotations
  1. Mar 2023
    1. Studying biology even helps us understand things that are “out of this world”. For instance, understanding the requirements for life can help us look for life on Mars or deep in Earth’s crust.

      I am intrigued by this comment, since it demonstrates how biology and science in general can be applied anywhere, even in places outside of earth. For example, we are able to determine what minerals and elements a planet contains and also if they display similar traits to Earth. As mention on this sentence, this will help us find life on other planets and help us understand if other planets are habitable.

    2. Is it possible for multiple people to observe the same situation and perceive different problems associated with it? How does context and perception influence how one might identify a problem, its solution, or its importance?

      This reminds me of a comic I once saw, where two people are looking at a number on the ground from different angles. One person, at one end of the number, says it's a "6" while the other, from the opposite side, claims it's a "9". I think the point of drawing was to show how perspective influences how you view something, which is certainly true and especially so in situations where there is no definitive answer you can look to.

      But it also makes you think: someone else, some other third party, painted that number on the ground. Whoever put it there had an intention behind it and surely had their own idea on what it was (a 9 or a 6). Not to mention, it's always important to take into account the greater context- is there other text beside the number to which you can align yourself with and figure out how it should be read? When put next to, say for example, a 4, the "9 or 6" loses its ambiguity and it can only be one of the two.

    3. Therefore, students in BIS2A need to put some effort into constructing mental models of what proteins "look" like and how they behave at the molecular scale. Since the entire course centers around biomolecules and processes that happen at a microscopic scale, a similar argument can be made for nearly every topic in the class.

      As a student who has not taken a biology class on these systems since approximately 5 years ago, (and not a great class at that), this is a little daunting to me. I hope that I can find or be provided with some good resources of models and images that I can refer to. I think that the combination of both new concepts and new visual ideas will be difficult but I hope that the in-class sketches with the sketch pads will be beneficial. In my experience, getting hands-on with the information helps you in long run in terms of recall.

    4. “Studying” includes any time spent learning the vocabulary, doing the reading and Nota Bene assignments, preparing for class by doing the pre-lecture study guides, reviewing the slides and your notes after class, listening to the podcast, and completing the post-lecture study guides and homework assignments.

      While this can seem a little daunting at first, I know that it definitely helps. Repeated exposure to the information as well as metacognitive reflection on what strategies work/which don't, help as well. One strategy I like to use is diversifying what daily approach I use. For example, one day I make a Quizlet and do the reading for the next day. The next day, I study my Quizlet, and take notes from the podcast. On another day, I'll complete my homework assignment. By studying in this way I avoid burning out on just one area/avoid redundant work.

    5. The act of drawing can also serves as a "self test." When you force yourself to write something down or to create a picture describing a process on paper,

      Last quarter, in BIS2C, I found that drawing actually helped me quite a bit when it came to understanding concepts. Sure, I could've very well just memorized which characteristics belonged to which taxa, but that tactic wouldn't have helped me grasp the concept in a larger, evolutionary sense. Instead, by physically drawing out the phylogenies and marking the branches where certain traits evolved, I was able to better understand and visualize how everything linked together.

    6. Studying biology helps us understand issues and solve everyday problems. For instance, understanding the biochemical reactions that transform your food, how it and your body store energy, and how this energy can be transferred from the food to your muscles, teaches you about how your diet and exercise influence your health.

      This seems to be an integral part of biological sciences and I can really see the intersections between the biochemical reactions we'll learn about in this class and other classes I've taken like BIS2B and ANS1. I think the gut microbiome is very interesting, especially in ruminants, so I'm interested in learning more about how the digestive system works on the cellular level.

    7. How do you interpret the term mental model and why do you think that it is important for learning?

      A mental model for me consists of questions, assumptions, images, examples, information (both already known and new), and inferences/conclusions. It's my own version of the scientific method so that I can confidently talk about and explain a topic because I understand it. I think it's important to learning because it expands the question-and-answer style of teaching/learning. It helps us go more in depth in a topic so that we can view it in different forms and perspectives while still forming a connection to other topic/ideas so in return, more learning and exploration is involved.

    8. However, some students are more accustomed to studying for exams by memorizing information rather than understanding it. (It's not their fault; that's what they were asked to do in the past).

      The change in this class to go from simply memorization to understanding the process may be difficult. Memorizing information isn't difficult but understanding the process will take more time and comprehension.

    9. Reviewing and studying material associated with a lecture THAT SAME DAY. This includes reviewing the lecture notes, vocabulary, and doing associated exercises. This ALSO includes making lists of concepts that still aren't clear and trying to have those questions cleared up before the following lecture. Constant self testing. That is, most successful students have developed methods (there are many) for assessing their understanding of the course material and spending more time on areas they find MOST challenging.

      Reviewing lecture material immediately after class make the information more solidified on the brain. Later when studying for exams not as much studying is needed for lectures because the information would be memorized better. This is why it's beneficial to go over lectures after class.

    10. BIS2A focuses on the cell, one of the most fundamental units of life.

      I find it interesting to see the similarities and differences between each class in the BIS series. BIS2C touched a little bit at the microbial level but focused primarily on plants and animals on phylogenetic trees. While BIS2A focuses only on the microbial level.

    11. If everyone in the class can conscientiously do these things, we’ll all have fun this quarter (even while working hard) and be a happy and smarter bunch at the end of the term!

      I find the layout of this class to be interesting. Since the class uses socratic teaching, being prepared for lectures is vital to do well. The podcast and post-study guides will be useful to demonstrate a clear understanding of the material in class.

    12. When someone is called on in class to answer a question, don't take a mental break! This is a time for you to listen to your classmate, compare their ideas with what you might have shared had you been called upon.

      This is something I need to work on and possibly others need to as well. It shows that listening to your classmates can assist you to learn more about the topic and improve your answer in the process.

    13. Biology is the scientific study of life. Studying biology is an opportunity to ask exciting questions about the world that surrounds us.

      I believe it holds a lot of truth as to learn a new skill, questions must be asked to discover more about the subject at hand or understand the wrongs and rights. As well, asking questions helps create/transfer more knowledge that even knowledgeable professors and students in biology may not have known.

    14. Most students get a little nervous about answering questions in class. This is understandable. However, it is important to remember that your thoughts, no matter how well or ill-formed, are valuable contributions to the classroom discussion. The important thing is to try!

      being more vocal in class is something that i've really been trying to work on, especially in some of my faster paced classes, since it's intimidating to speak up and slow things down or get it wrong. i'm excited to try and grow my confidence in this class :)

    15. Design Challenge

      Wait but what’s a Design Challenge? What are we designing and how is it challenging?

    16. Is it possible for multiple people to observe the same situation and perceive different problems associated with it? How does context and perception influence how one might identify a problem, its solution, or its importance?

      This idea, I heard it from someone in the past: When students are struggling to pay attention in class, you generally assume that the problem is the way the lecture was presented. Actually, what if the class is right before lunch, so everyone is hungry? What if the air conditioning is really low, making them sleepy? The problem is not always as obvious as you might think

    17. (i.e. you’ve either got it or you don’t)

      Note to the authors, I like how the more advanced vocabulary is further elaborated upon. I didn’t need it now but I know that, eventually, it’ll be incredibly helpful

    18. Can you think of an example where the imprecise or incorrect use of vocabulary caused needless confusion in real life? Describe the example and discuss how the confusion could have been avoided

      I think some statements are subjective. When I say “I got a good grade” it could mean anywhere from ‘I got a full score’ to ‘I barely passed the class.’ If the class is exceptionally difficult, maybe you’d use the latter

    19. Can you give an example from your previous classes where an instructor has used an anthropomorphism to describe a nonhuman thing? What were/are the trade-offs of the description (i.e. why did the description work and what were its limitations)?

      I am very curious where this is true in a more abstract field like math or computer science. The best I can come up with is “my program is looking for the max value” but that doesn’t feel anthropomorphic enough, that’s literally what is being done

    20. How do you interpret the term mental model and why do you think that it is important for learning?

      To me, a mental model is like a mind map. It’s a way to organize/structure my thoughts into key ideas and eventually elaborate with pictures, questions, and so on. Without a mental model, I am not building connections with what I knew before. Thus it’s harder to realize the significance of what I hear in class or how it would fit the bigger picture

    21. The act of drawing can also serves as a "self test." When you force yourself to write something down or to create a picture describing a process on paper, you will be able to independently assess how strong your conceptual grasp of a topic really is by seeing how easy or hard it was to put your mental image of something onto paper. If it is hard for you to draw a core concept or process from class WITHOUT EXTERNAL ASSISTANCE, it is likely that you need more practice. I

      Preview: 1. Go over pre-lecture materials 2. create NOTES 3. List Questions During Class: 1. Active listening 2. Take short notes or key points 3. Ask Questions After Class: 1. Add details and highlights to NOTES 2. Do Post Lecture materials 3. Reflect by self-testing

    1. If the exercise ball were an atom, the nucleus would have a radius about 1/2 to 1/10 of your thinnest hair.

      I guess that goes to show how exaggerated and unrealistic our models have to be. If we’d drawn the ratio between orbitals and the nucleus more accurately, we’d completely lose sight of the nucleus

    1. knowing the various roles that typically emerge in a group can help you better understand a group’s dynamics

      agreed

    2. leadership and group member roles influence the performance of small groups

      yes it is very important to have designated people for certain tasks

    1. instruction in group communication can improve people’s skills

      im excited to learn how!

    2. We are just expected to know how to work in groups without much instruction or practice

      i think this is why high school was so torturous at times.

    3. Groups make it easier for us to complete a wide variety of tasks

      i agree

    1. Accordingly, it is possible to read something quickly and accurately and even answer comprehension questions correctly, while still not fully understanding what was read. For instance, you most likely have the ability to accurately read the following excerpt from the song Waltzin’ Matilda:

      This is when critical literacy comes to play. It helps you understand what you're reading better

    2. we were unable to explain to students the rationale for the spellings.

      There is no "one size fits all" rule. Some words have exceptions to the rules of literacy.

    3. inconsistencies

      wrongs

    4. both sides

      phonics instruction and self-reflexivity

    1. plac

      Typo: place

    2. Question 5: Imagine an alternative scenario in which you discovered, as before, that the plants in the sunny part of the yard were all the same height (even those under your shade structure) but that the plants in the shady part of the yard that got “extra” light from your mirror contraption grew taller than their immediate neighbors. What would this say about your alternate hypothesis? Null hypothesis? What would you do next?

      Maybe it takes a certain amount of sunlight to see the effects?

    3. Question 6: What assumptions are you making about the ability to make measurements in this experiment? What influence might these assumptions have on your interpretation of the results?

      We assumed our tools were accurate at measuring height and perfectly shading the plants. Also that the weather from last summer was the same. Also that the watering between all the plants was consistent. Your results must have been reliable!

    4. Question 2: Why do you create a shade structure? What is this testing? Based on your hypothesis what do you predict will happen to the plants under the shade structure?

      I assume the state of the ground and soil could have influenced the height of the plant. Thus, shading will eliminate light from some of plants that share the same soil. The shade should cause the plants to grow shorter

    5. Question 1: We used a shortcut above. Can you create statements for both the null and alternative hypothesis? Work with your classmates to do this.

      Null hypothesis: the height of our tomato plant is not affected by sunlight. Alternative hypothesis: the height of our tomato plant is affected by sunlight

    6. the sheer number of possible independent variables in a group of potential patients would be high

      It does somewhat bother me, how could you say that two patients are one and the same? Even if we try to make their environment as identical as possible, they are still different. Unless we replicate ourselves genetically, this is an impossible statement to make. With that said, I can kinda foresee how statistics can accommodate this problem

    7. to test whether her new drug actually influences blood pressure

      The independent variables are factors that we assume can affect blood pressure. We want to keep them consistent so that when we introduce the drug, we can verify if the drug does influences blood pressure. I like to think if y is the change in blood pressure, x is the influence of the drug, and z is the influence of independent variables, then y = x + z where we keep z constant and plug in different scenarios for x to see if y changes. If y remains constant, then it must be true that y = z and we can eliminate x from the equation. note These are not an actual math equation, I made them up to give a better sense to what independent and dependent variables are. Also, = is misleading but I meant to say ‘is changed based on x and z’

    8. What does the statement about falsifying hypotheses mean in your own words? Why is falsification critical to the scientific method?

      I think the null hypothesis states that there is no correlation between two events or attributes. Falsifying this statement (proving that this statement is false) means that the two events are related. Proving whether or not events are related helps us eliminate bias

    1. (0-[-795.8])-(-748.1))[(2(56.5)+(-53.1)]-[104.6]

      [(2(56.5)+(-53.1)]-[104.6] should be divided

      and it should be

      (0-[-795.8])-(0-[-748.1)]) / [(2(56.5)+(-53.1)]-[104.6]

    1. . Its position at time ttt is given by s(t)=3–√t+2costs(t)=3t+2cos⁡ts(t)=\sqrt{3}t+2\cos t for

      i need help cant figure out how the answers are correct

    1. metals in general have low ionization energies,

      is the minimum energy required to remove the most loosely bound electron of an isolated gaseous atom, positive ion, or molecule.

    1. more competent and ethical communicator

      that is exciting!

    2. nonverbal communication, perception, and listening

      communication studies also include things like listening and perception which reminds me of how in speech class we learned about how in order to have a conversation there needs to be some sort of listening and response

    3. Plato and Aristotle

      notable people who studied philosophy and communication

    1. Ionic bonds

      Ionic bonds is the electrostatic force of attraction between oppositely charged ions formed by loss or gain of electrons to achieve noble gas electronic configuration. The electrons are transferred from one to another.

    1. Do you think we, as a society, have less value for FtF communication than we used to? Why or why not?

      I believe face-to-face communication is still highly valued in personal and professional relationships. Personally I believe it's easier to hold a FtF conversation, there's less awkward silence and the conversations flow better.

    2. What are some ways that CMC reduces stress in your life? What are some ways that CMC increases stress in your life? Overall, do you think CMC adds to or reduces your stress more?

      Some ways that CMC reduces stress in my life include being able to communicate with people from a distance and having access to helpful resources and information online. However, CMC can also increase stress in my life through addictions like social media, misinterpretation of messages, and the pressure to always be accessible. Overall, I believe CMC adds more stress than it reduces in my life.

    3. In a typical day, what types of CMC do you use?

      In a typical day, I use the following types of CMC:

      1. Email
      2. Text messages
      3. Instant messages
      4. Video chat
      5. Voice chat
      6. Social media

      I use email to communicate with colleagues and clients, and I use text messages to communicate with friends and family. I use instant messages to communicate with colleagues and clients, and I use video chat to communicate with friends and family. I use voice chat to communicate with colleagues and clients, and I use social media to communicate with friends and family.

    1. "the reactivity series is a series of metals, in order of reactivity from highest to lowest. It is used to determine the products of single displacement reactions, whereby metal A will replace another metal B in a solution if A is higher in the series. Activity series of some of the more common metals, listed in descending order of reactivity."

    1. concentrates on the role of biological factors, such as the central and peripheral nervous systems, neurotransmitters, hormones, genes, and evolution on behavior and mental processes.

      The main focus for this branch of psych.

    2. since we do not have control over many of the factors in our environment, our genes, and our evolution as a species, our brain function and thus our behavior is actually controlled by causes outside of our control.

      So theses are the variables of decision making.

    3. If everything in the universe is physical, then applied to psychology, including biopsychology, this means that the mind, our mental processes and subjective mental experiences, must also be entirely physical processes in an entirely material brain.

      What would these physical variables that relate to our mental processes?

    4. determinism--the belief that all events in the universe have prior causes and that these causes are external to the human will.

      My beliefs say that we have free will. I do believe that your up brining has major effects on your behaviors and actions but we are not a slave to them. We can change and progress thats why some seek therapy and counseling.

    5. With advances in research methods, more complex topics such as language, reasoning, decision making, intelligence, and consciousness are now being studied intensely by biological psychologists.

      I am a terrible decision maker and I would love to learn more about this in more depth and complexity.

    1. concluding paragraph should pull together all the different elements of your definition to ultimately reinforce your thesis

      Collaborate all points used to develop the definition into the conclusion

    2. body paragraphs should each be dedicated to explaining a different facet of your definition.

      use instances that fit with your definition in the body paragraphs

    3. Establishing a functional context from the beginning will orient readers and minimize misunderstandings.

      Establishing a function context from the beginning will help the readers understand and minimize confusion

    4. Choose a topic that will be complex enough to be discussed at length.

      Pick a topic that can be discussed at length, and make sure that you have enough to talk about

    5. remainder of the essay should explain different aspects of the term’s definition.

      Include different aspects of the terms' definitions in other paragraphs in the essay

    6. state as your thesis your definition of the term.

      define your term in the thesis

    7. opens with a general discussion of the term to be defined.

      First step: introduce the term (broadly)

    8. definition is established between two people or a group of people, it is easier to have productive dialogues. Definitions, then, establish the way in which people communicate ideas. They set parameters for a given discourse

      Important as there narrow in on what is to be talked about and keeps the idea to be narrowed in on to what limits the subjects is applied.

    9. rest of the essay should explain the rationale for your definition. Remember that a dictionary’s definition is limiting, and you should not rely strictly on the dictionary entry.

      Throughout the rest of the essay explain your reasoning and rational ideas for your definition. Try to avoid using the dictionaries definition as it is limiting

    10. Context identifies the circumstances, conditions, or setting in which something exists or occurs. Often words take on different meanings depending on the context in which they are used.

      Try to focus and take into the context in which you are using your term and then develop the concept.

    11. the purpose of the definition essay is to simply define something.

      Important to note and use in which it is valued

    12. context is missing from the essay, the essay may be too short or the main points could be confusing or misunderstood.

      context is important to included into your essay to add clarity

    1. One thing to remember about all studies of lesion or surgical patients is that the ability to generalize to the population during these studies may be questionable.

      No two "normal" brains are the same.

    2. Doing this kept the electrical activity that was causing the epileptic seizures confined to one hemisphere and helped get the epilepsy under control.

      Pros and Cons? Is it worth it?

    3. Lesion studies can allow for very specific conclusions to be made about very specific brain areas.

      This makes me think of lobotomies.

    4. Recording from one area ignores what is happening everywhere else in the brain.

      This is a serious downfall in single cell recording. We need to be careful when collecting information from only one area verses other parts of the brain.

    1. fMRI is an excellent tool for comparing brain activation in different tasks and/or populations.

      It is interesting to think about the many different variables involved in something as simple as seeing words on a screen and the different tasks the brain is involved in for processing those words. It is not as simple as recognizing the word and it's meaning!

    2. Glucose and oxygen, two key components for energy production

      Getting enough oxygen is so important for over all health. This is why going outside getting sunlight and exercising is so vital to overall body function and mental health.

    1. Some TMS studies have used TMS to reduce brain activity in the right amygdala during the processing of faces with negative emotions

      This study sounds scary in a way considering, this could potentially control your emotions such as anger, fear, and sadness.

    2. TMS is able to explore neural plasticity, which is the ability of connections between neurons to change. This has implications for treating psychological disorders as well as understanding long-term changes in neuronal excitability.

      I would like to learn more about how this stimulation can help disorders. To me it seems to be a retraining of the mind and reactions to things.

    1. El paquete externo es una colección de herramientas que son muy útiles cuando R necesita interactuar con archivos que son producidos por otros paquetes de software (por ejemplo, SPSS)

      se refiere al paquete foreign

    1. the innate emotions related to pair-bonding and mating (e.g. "falling in love")

      I wonder how long has human developed the ideal of monogamy relationships?

    2. The result is the proliferation of the genes and traits which provide superior fitness to the environment.  Fitness is measured not simply in terms of survival, but more importantly by reproductive success, the number of living offspring that are produced.

      Sometimes desirable traits could be detrimental to the individual's survival, making it counter-productive: Like deer growing too large antlers because they're desirable for the species, resulting in death due to antlers being stuck on terrains. I wonder if there has been any species that had been endangered or driven to extinction due to this interaction?

    3. as the environment changes, new traits may evolve

      I wonder if some species are being forced to gain adaptive traits due to climate change affecting their environment.

    4. . Understanding evolution can give us fresh insights about our psychology and the psychology of other species

      With the capability to understand other species, we are able to see how we are connected to them.

    5. Why do humans and other animals move, why do they have particular mental capabilities and not others

      These type of curious questions of very important in order for us to understand the fundamentals of life.

    1. MRIs have found a thicker frontal cortex (Carper & Courchesne, 2005) and a thinner temporal cortex (Hardan et al., 2006) in patients with ASD.

      Is it the same for everyone on the spectrum? How drastic are the structural/physical differences on neurotypical and atypical people?

    2. The patient must be enclosed in a metal tube-like device for the duration of the scan, sometimes as long as thirty minutes

      This must be agonizing for patients who need an MRI scan but are afraid of confined spaces or have discomfort with loud noises.

    3. it exposes patients to a dose of radiation many times higher than that of X-rays

      The thought of CT scanning emitting more radiation than x-rays is alarming. Especially to a patient who needs multiple CT scans.

    4. more modern medical imaging technologies produce data that are integrated and analyzed by computers to produce three-dimensional (3D) images or images that reveal aspects of the body functioning.

      It amazes me how computers have been upgraded to do so much more than expected since the first modern computer.

    5. MRIs have found a thicker frontal cortex (Carper & Courchesne, 2005) and a thinner temporal cortex (Hardan et al., 2006) in patients with ASD.

      The frontal cortex involves decision making, personality, expression, etc... Temporal cortex is in charge of memory, language, and sounds. So it does make sense that people struggling with ASD have a harder time communicating as well as behavior.

    6. Whether this is particularly dangerous is still being debated (McCollough et al., 2015).

      How long does it really take to debate on wether this is dangerous or not? Seeing the effects on a person before and after CT's and through research and statists I believe we have enough information to decide this. Obviously money plays a huge role in this area as well.

    7. however, X-rays are capable of damaging cells and initiating changes that can lead to cancer. This danger of excessive exposure to X-rays was not fully appreciated for many years after their widespread use.

      Overall I think X-rays are a safer option, but I still get worries personally when I am asked to get an X-ray every 6 months at my dentist office. I love being able to trust doctors but in the back of my mind this truth always seems more prominent to me.

    1. e), DNA replication results in the formation of two identical copies of each chromosome—sister chromatids—that are firmly attached at the centromere region

      very imp

    1. Under circumstances in which a person has been lost and presumed dead or when family members were unable to attend a funeral, there can continue to be a lack of closure that makes it difficult to grieve and to learn to live with loss.

      The lack of closure when someone cannot attend the funeral.

    1. La idea aquí es variar deliberadamente los predictores (IV) para ver si tienen algún efecto causal en los resultados

      en la investigación experimental, variamos los predictores para ver si tienen efecto en los resultados (outcomes)

    2. Investigación experimental y no experimental

      esta distinción tiene que ver con el grado de intervención del investigador en el estudio

    1. Hasta cierto punto, entonces, una medida muy poco confiable tiende a terminar siendo inválida para fines prácticos; tanto es así que mucha gente diría que la confiabilidad es necesaria (pero no suficiente) para asegurar la validez

      La confiabilidad es necesaria, pero no suficiente

    2. confiabilidad es en realidad un concepto muy simple: se refiere a la repetibilidad o consistencia de su medición

      Confiabilidad está relacionado con la repetibilidad o consistencia de una medición

    1. No es escala de intervalos, pero en la práctica está lo suficientemente cerca como para que usualmente pensemos que es una escala cuasi-intervalo.

      Las escalas de Likert no necesariamente son de intervalo, no hay un cero natural (entonces serían de intervalo), pero la distancia entre 1 y 2, no necesariamente es la misma que entre 2 y 3, etc... Se podría decir, más bien, que las escalas de likert son de cuasi-intervalo

    2. Las variables de escala de intervalo y escala de relación pueden ir en cualquier dirección
      • las escalas nominales y ordinales son siempre DISCRETAS
      • las escalas de intervalo o de relación pueden ser DISCRETAS o CONTINUAS
    3. un segundo tipo de distinción que debes tener en cuenta, con respecto a qué tipos de variables puedes encontrarte. Esta es la distinción entre variables continuas y variables discretas

      la primera distinción de las variables tiene que ver, más bien, con las escalas de medición

    4. en la que cero realmente significa cero, y está bien multiplicar y dividir.

      en las escalas de relación, el cero sí significa cero y está bien dividir

    5. Un estudiante que comenzó en 2003 sí llegó 5 años antes que un estudiante que inició en 2008. No obstante, sería una locura para mí dividir el 2008 para el 2003 y decir que el segundo alumno comenzó “1.0024 veces después” que el primero. Eso no tiene ningún sentido en absoluto

      con las escalas de intervalo no podemos realizar operaciones per se... no podemos dividir 10 grados centígrados entre 30 grados, etc.. no tiene sentido hacerlo

    6. En el caso de las variables de escala de intervalo, las diferencias entre los números son interpretables, pero la variable no tiene un valor cero “natural”.

      nunca he entendido porqué las escalas de intervalo no tienen un valor cero natural.

    7. observe que si bien podemos usar el orden natural de estos artículos para construir agrupaciones sensatas, lo que no podemos hacer es promediarlos

      en las escalas ordinales, no es posible promediar!

    8. Una variable de escala ordinal es aquella en la que hay una manera natural, significativa de ordenar las diferentes posibilidades, pero no se puede hacer nada más

      en las escalas ordinales ya hay una posibilidad de ordenar las posibilidades

    9. Una variable de escala nominal (también denominada variable categórica) es aquella en la que no existe una relación particular entre las diferentes posibilidades

      Para las escalas nominales, no hay distinción de "mejor" o "mayor"

    10. escalas de medición

      al final, las escalas de medición son lo mismo que variables, y estas a su vez tienen diferentes tipos

    1. However, as can be seen in figure 10.4, there has been a decline in the number of people dying in hospital in the last decade (Hall, Levant, & DeFrances, 2013). This decline can be tied to two changes in the U.S. health care system:

      A decline in the amount of people dying in the hospitol from the year 2000 to 2010 went from 776,000 to 715,000. A huge decline of impatient deaths of 61,000.

    1. ompared to film, scintillationcounter can measure diffraction intensities and Bragg angles more accurately.

      IMP

    2. The film is placed around the sample as a circle and records the diffracted X-ray beams. The positions of diffraction lines correspond to Bragg angle. And Photographic film can record both the reflected and transmitted X-ray beams.

      IMP

    3. It is usually made of single crystal silicon.

      IMP

    4. Usually, evenly grinded sample powder is dissolved in organic solvent such as acetone or pressed into a plain on a glass slide to make sure the sampel is flat. The sample holder has a press ring to fix the slide.

      IMP

    5. f Be is close to zero, so it can make sure the X-ray source is monochromatic and does not contain introduced chracteristic X-rays from other metals.

      IMPORTANT

    6. In a reflection geometry instrumentation, X-ray tube usually contains a side window made of Be to allow the generated X-rays to emit at the demanding angle. The reason that Be is used as a X-ray window, is that the fluorescence yield

      IMP

    7. Powder X-ray diffractometer consists of three components: X-ray source, sample holder and detector.

      IMP

    8. Body centered, I hkl: h+k+l=2n Face centered, F hkl: h, k, l either all odd or all even

      IMPORTANT

    9. Primitive, P None

      IMP

    1. The n-type semiconductor is coated by an aluminum contact

      IMP

    2. ne. The semiconductor is usually composed of silicon; germanium

      IMP

    3. In a scintillation counter, a phosphor is placed in front of a photomultiplier tube.

      IMP

    4. A powder X-ray diffractometer consists of an X-ray source (usually an X-ray tube), a sample stage, a detector and a way to vary angle θ.

      IMP

    5. In powder X-ray diffraction, the diffraction pattern is obtained from a powder of the material, rather than an individual crystal. Powder diffraction is often easier and more convenient than single crystal diffraction since it does not require individual crystals be made.

      Imp

    1. Bragg’s Law nλ=2dsinθ(1)(1)nλ=2dsin⁡θn\lambda = 2d\sin\theta where: λλ\lambda is the wavelength of the x-ray, ddd is the spacing of the crystal layers (path difference), θθ\theta is the incident angle (the angle between incident ray and the scatter plane), and nnn is an integer

      Important

    2. Bragg’s Law was introduced by Sir W.H. Bragg and his son Sir W.L. Bragg. The law states that when the x-ray is incident onto a crystal surface, its angle of incidence, θθ\theta, will reflect back with a same angle of scattering, θθ\theta. And, when the path difference, ddd is equal to a whole number, nnn, of wavelength, a constructive interference will occur.

      Important

    1. Understanding gene replication is the key to understanding modern evolutionary theory

      DNA replication is crucial to modern evolution because it has the responsibility of creating a range of genetic diversity through mutations

    1. if you lose a finger in an accident, that you will have children missing a finger, and that such changes will eventually become characteristics of the species

      Many years ago, I can probably understand how people would have this theory. But reading this now, it seems like a silly thought to think that characteristic modifications will pass along to the offspring.

    2. evolution is not goal directed

      Evolution has no goal of making species "perfect"

    1. Although, as we will discuss, we still learn about the brain from accidents and other traumatic brain events, we have a variety of other techniques that we can use now to study the brain in healthy individuals.

      Traumatic brain injury case studies have always been fascinating. You could observe two individuals with similar demographics in race/age/weight and jobs. Think, the American soldier. They could have almost identical injuries, yet the outcome could be drastically different.

    2. to visualize the parts of the brain that respond when we're exposed to stimuli that upset us or make us happy.

      After reading this section, I can now see how important functional imaging techniques are, especially to people with psychiatric disorders.

    3. Functional imaging techniques allow researchers to learn about the brain activity during various tasks by creating images based on the electrical activity or the absorption of various substances that occurs while a subject is engaging in a task

      This would be interesting as to tell a certain memory that would be triggers to someone. This can help with how effected a person feels when they remember events that were traumatizing. Such as patients with PTSD.

    1. he surgeon Burkhardt in 1894 performed a series of surgeries in which he selectively destroyed the frontal lobes of several patients in whom he sought to control psychotic symptoms, being the modern prototype of what was later known through Antonio Egas Moniz as psychosurgery.

      Lobotomies?

    2. Gage became irritable, irreverent, rude and profane, aspects that were not part of his way of being. His mind had changed radically.

      I can't imagine not being this way after this terrible accident happening to me. I can not help but think their could be more reasons that he was acting this way.

    1. This chemical was later identified as a neurotransmitter

      So chemical imbalances have to do with neurotransmitters?

    2. With case studies such as Phineas Gage and invention of methods such as the electroencephalogram (EEG) and computed tomography (CT or CAT) scans, scientists began to link the brain to specific behavior and cognition as biopsychology as a discipline began to emerge.

      Were these used on serial killers?

    3. The problem with PET scans was that an individual receiving a PET scan had to drink or be injected with a mildly radioactive substance, called a tracer.

      This scares me I could not imagine being willing to drink a radioactive substance.

    4. a person, the heart was saved and buried with the individual but the brain was discarded

      Wow, this is new information to me... I am kind if in shock in how they treated a dead body vs their beliefs.

    1. If the ether is attached to only primary, secondary, or methyl alkyl groups, a selective cleavage will typically take place using an SN2 mechanism.

      1,2 primary = Sn2

    1. 5

      This cannot be 5 when you add 1 and 2. You get 3. For a digit to be 5, you must have at least base 6. The digit 3 is allowed in base 6 or higher, so the 5 can only be 3, assuming the 1 and 2 are not typos.

    1. the study of the rates at which quantities change. It is one of the two traditional divisions of calculus, the other being integral calculus.

      asdfasdf

    1. while aging that occurs due to controllable factors, such as an unhealthy lifestyle including lack of physical exercise and poor diet, is called secondary aging (Busse, 1969).

      Secondary AGING

    1. Distrust in research also has other consequences, and as recently as 2021 has been cited as a contributing factor for the disproportionate impact of the COVID-19 pandemic on minority communities

      Unfortunately I agree with the distrust in the health care system because of these sorts of trials done performing studies on people and being dishonest.

    1. Direct imaging techniques are extremely useful ways to measure electrical brain activity in a non-invasive way. Both EEG and MEG are most useful at identifying differences in timing patterns of electrical activity.

      I love that both EEG and MEG are non invasive. I would love for both of them to be widely available for use even though MEG is more expensive.

    1. Some of this fat is stored within the abdominal cavity, called visceral fat, and some is stored just underneath the skin, called subcutaneous fat.

      Một số chất béo này được lưu trữ trong khoang bụng, được gọi là chất béo nội tạng, và một số được lưu trữ ngay bên dưới da, được gọi là chất béo dưới da

    1. The elements of poetry permit a poet to control many aspects of language—tone, pace, rhythm, sound—as well as language’s effects: images, ideas, sensations. These elements give power to the poet to shape a reader’s physical, emotional, intellectual, and spiritual experience of the poem.

      relate to literary element's as in short stories

    1. also, what exactly is getting reduced at the cathode? the actual metal or is it also the cations that are getting attracted there?

    2. what i do not understand is electrolytic cells. i understand the nonspontanteous flow of electrons from the now positively charged anode (first of all, how is it positively charged and moving electrons away from it?) to the negatively charged cathode (second of all, how does the cathode accept more electrons if it already has all of them?), and third of all, what is the point of the anode moving electrons to the cathode with the addition of energy if the whole point of the electrolytic cell is to restore the pre-galvanic cell conditions? idk im lost