StudentShare
Contact Us
Sign In / Sign Up for FREE
Search
Go to advanced search...
Analysis of Fundamental Theology
9 pages (2440 words) , Download 0 , Literature review
Free
The book of Revelation fits in with a style of literature that was quite popular in that day called apocalyptic literature.... Through these visions to John, Jesus took a popular style of literature in that day and used it to express everlasting truths.... The divine Spirit in the light of human experience is the expression of Tillich's philosophy of God....
Preview sample
Critical Success Factors Approaches
8 pages (2340 words) , Download 1 , Literature review
Free
This literature review "Critical Success Factors Approaches" briefly reviews some referred journal articles which deal with the identifying of variables influencing the success of project implementation according to various Critical Success Factors approaches.... .... ... ... The critical success factors (CSF) approach in the context of the project management has been first established by Rockart, which defined CSF as 'the limited number of areas in which results will ensure successful competitive performance for the organization"....
Preview sample
The Use of Low Glycaemic Index Diets in the Treatment of Diabetes Mellitus
7 pages (2313 words) , Download 2 , Literature review
Free
Cochrane Database of Systematic reviews. ... Nutrition reviews, 67, pp.... The literature review focuses on the use of low glycemic index diets in diabetes mellitus treatment. ... The paper "The Use of Low Glycaemic Index Diets in the Treatment of Diabetes Mellitus" will begin with the statement that diabetes mellitus is a metabolic condition that results due from an insulin secretion defect, insulin action, or both actions (American Diabetes Association 2012, 65)....
Preview sample
Integration, Long-Term Contracts and Hold-Up Theories: Fisher Body and General Motors
8 pages (2000 words) , Download 2 , Literature review
Free
This literature review conducts a critical analysis of the literature in which the vertical integration of FB by GM is used as an example of either the role of hold-up risks in long-term contracts or the role of vertical integration in transaction costs analysis.... literature Review: HOLDING UP GENERAL MOTORS?... Thereafter GM vertically integrated FB and this vertical integration emerged as a significant example in the literature of the role of vertical integration and/or hold-up risks associated with long-term contracts in transaction cost theory (Roider, 2006)....
Preview sample
Review Of The Education Of The Little Tree By Forrest Carterthe
3 pages (750 words) , Download 2 , Book Report/Review
The Education of the Little Tree is written in a fictional memoir style by Asa Earl Carter who used the pseudonym Forrest Carter.... The paper "Review Of The Education Of The Little Tree By Forrest Carterthe" gives an analysis of book's plot and examples of moral lessons which reader can learn from it....
Preview sample
Management in Daoism
9 pages (2460 words) , Download 1 , Literature review
Free
This literature review "Management in Daoism" discusses Daoism philosophy that can be applied with great effect in many areas of our lives, but it is particularly effective in business and organizations, in stress management, and even in schools where student discipline is needed.... Management in Daoism” Introduction The philosophy of Daoism is articulated in Daodejing and the Zhuangzi.... The philosophy and principles spoken of in the verses talk of tired lives since the period of its founding was a time of conflicts and wars....
Preview sample
The Battle of Algiers
2 pages (500 words) , Download 3 , Movie Review
Free
The film also sheds light on the political philosophy underlying national liberation, particularly from an Arab perspective.... The film focuses on Ali la Pointe, one of the leaders of the National Liberation Front (FLN) whose guerilla campaign against the French finally culminated in independence in 1962....
Preview sample
The Manifestation of Race, Ethnicity, and Faith in British Education
11 pages (2750 words) , Download 2 , Literature review
Free
This literature review will provide a brief review of literature on identity politics and multiculturalism, specifically concerning three of the most debated issues in the UK: (1) race, (2) ethnicity, and (3) faith in education.... The first part of the literature review will discuss the distinctions between race, ethnicity, and faith.... The issue of multiculturalism in education will take precedence in this literature review....
Preview sample
Effective Anti-Racist Guidelines in the British Education System
12 pages (3000 words) , Download 2 , Literature review
Free
The paper shows a brief review of the literature on identity politics and multiculturalism, concerning three of the most debated issues in the UK: race, ethnicity, and faith in education.... The first part of the literature review will discuss the distinctions of race, ethnicity.... The issue of multiculturalism in education will take precedence in this literature review.... This literature review will provide a brief review of literature on identity politics and multiculturalism, specifically concerning three of the most debated issues in the UK: (1) race, (2) ethnicity, and (3) faith in education....
Preview sample
How Knowledge Is Acquired in Nyaya and Samkhya
11 pages (2883 words) , Download 1 , Literature review
Free
This paper "How Knowledge Is Acquired in Nyaya and Samkhya" shall compare and contrast the way knowledge is acquired in Nyaya and Samkhya, two important systems of Indian philosophy.... Traditionally, six systems of philosophy, those that accept the authority of the Vedas have been followed in India; these are different from the systems of thought which repudiate the authority of the Vedas, such as Buddhism, and Jainism.... The six schools of Indian philosophy Visheshika, Nyaya, Samkhya, Yoga, Purva Mimasa, and the Utthara Mimamsa were perceived by six rishis, Kanada, Gauthama, Kapila, Pathanjali, Jaimini and Vyasa respectively, are collectively known as the “Shad Dharshanas....
Preview sample
Functional Analysis of Enterprise Resource Planning Systems
3 pages (750 words) , Download 2 , Book Report/Review
The literature review is directly related to the hypothesis and helps in understanding the historical aspects of ERP solutions.... However, the comparative analysis of ERP solutions should have been supported with more literature and reasoning.... The paper "Functional Analysis of Enterprise Resource Planning Systems" focuses on the article that has been chosen for critique reading is written by Todor Stoilov, Krasimira Stoilova....
Preview sample
Business Process Redesign
4 pages (1000 words) , Download 0 , Book Report/Review
Free
Clark and Stoddard (1996) have been successful in evaluating the potential of IOS and the role that it plays in manifesting inter-organizational collaboration, and “to improve firm performance and change industry structure” (Clark & Stoddard, 1996, “literature Review”).... ased on the ideas and suggestions put forward by the authors – Clark and Stoddard – and the findings of the literature review, it may be inferred that the effective application of IOS as a tool for business process redesign, will call for a comprehensive application mapping as well as selection, as has been depicted in the figure appended above....
Preview sample
Consumer Awareness of Car Financing in UAE Banks
8 pages (2290 words) , Download 0 , Literature review
Free
The paper "Consumer Awareness of Car Financing in UAE Banks" is a good example of a literature review on finance and accounting.... The paper "Consumer Awareness of Car Financing in UAE Banks" is a good example of a literature review on finance and accounting.... In conclusion, the literature review reveals the nature of binge spending of Emiratis on luxury products including cars by borrowing massively from the UAE banks.... The literature review provides a study gap to assess the consumer understanding of the significance and implications of using the UAE banks' systems in obtaining cars....
Preview sample
Plato's Republic
11 pages (2848 words) , Download 2 , Book Report/Review
Free
Running Head philosophy: Platos Republic philosophy: Platos Republic Inserts His/Her Inserts Grade Inserts Tutor's Name ... Plato believes this to be as true of philosophy as it is of soldiering, farming, or weaving.... Plato underlines that this problem has deep roots and diverse causes: “there is an old quarrel between philosophy and poetry” (Plato 1996).... Plato would have philosophy be its own jury; he sees in it the capacity to get beyond all that is merely customary and conventional, relative and subjective....
Preview sample
THE AUTOBIOGRAPHY OF MALCOLM X
1 pages (250 words) , Download 2 , Book Report/Review
Free
Author Haley has very well been successful in creating a unique piece of historical literature.... The literary qualities of Haley have made this book a magnificent piece of literature that must be read by everyone who has a judgment about Malcolm.... [Your full name] June 21, 2011 Book Review “The Autobiography of Malcolm X” is a result of a series of interview that Alex Haley conducted with Malcolm X between 1963 and 1965....
Preview sample
Econometrics
5 pages (1250 words) , Download 2 , Literature review
However, prior and the analysis and setting up of a model that describes the effects of the factors, a comprehensive literature review regarding the aforementioned factors is inevitable.... In the recent past, there have been several researchers that have dedicated themselves to test for the measures of the copious factors that determine a firm's marketplace profitability....
Preview sample
Social Class Theories and Consumer Behaviour
7 pages (2358 words) , Download 1 , Literature review
Free
Social Theories and Consumer Behaviour Introduction The social science literature was determined to be persistently dominated by two kinds of images of consumers.... In this regard, Pierre Bourdieu introduced the concept of ‘habitus' which gained significant importance over the time in sociological literature related to human action theories.... urmaz and Taşdemir (2014) indicated that between 1950s and 1960, importance of social class in marketing literature protruded like never before....
Preview sample
Midwifery: Active Management vs Physiological Management of the Third Stage of Labour
25 pages (6250 words) , Literature review
Nobody downloaded yet
"Midwifery: Active Management vs Physiological Management of the Third Stage of Labour" paper considers active management of the third stage of labor vs the more passive physiological management of the third stage.... It considers possible complications which might arise and their possible management....
Preview sample
Response of Organizational Culture readings
2 pages (500 words) , Download 2 , Book Report/Review
Free
Apparently, organizational culture encompasses the philosophy, experiences,.... Apparently, organizational culture encompasses the philosophy, experiences, expectations and values that hold employees together as well as bolster unity in the organization, factors that contribute towards its attainment of corporate objectives (National Defense University, N....
Preview sample
Calendar Effects on Security Price Anomalies
9 pages (2565 words) , Download 3 , Literature review
Free
literature Review For the day of the week effect in stock market returns, Gibbons & Hess (1981), Fama (1991), (Grossman and Stiglitz 1980)), French (1980)), Lakonishok and Levi (1982)), Rogalski (1984)) and Keim and Stambaugh (1984)), Harris (2002), Lakonishok and Smidt (1988), Allen and Karjalainen (1993) have exhibited the impression of this phenomenon.... Fama (1991) has reviewed market efficiency literature by selecting the relevant research in the previous 20 years....
Preview sample
How Stress Leads to Injuries on the Job
6 pages (1772 words) , Download 3 , Literature review
Free
ary Cooper conducted an early review of occupational research and was able to develop a facet model outlining the relationship among stress-and-non-stress-related variables found or assumed in the literature in 1979.... This is probably the major reason why organizational psychologists, physicians, clinical psychologists, engineering psychologists, labor economists as well as nurses contributed greatly to the pile of occupational stress literature.... espite the plethora of literature on the nature, causes, and physical and psychological consequences of occupational stress, surprisingly, there are few explorations and studies in regard to occupational stress intervention....
Preview sample
Analysis of Passive Strategy of Spending in the Market Portfolio
3 pages (750 words) , Download 2 , Literature review
Free
Likewise, in an approach derived from past literature reviews, Haruvy and Noussair (2006) noted that virtual markets occupied with speculators, reaction traders and inactive traders made similar patterns as earlier noted.... This literature review "Analysis of Passive Strategy of Spending in the Market Portfolio" discusses the Investment portfolio hypothesis that guides the process in which an investing entity or economic planner distributes capital and related assets in an investment portfolio....
Preview sample
Implementing and Managing Change within the Organization
6 pages (1748 words) , Download 0 , Literature review
Free
Stanleigh (2007) highlights that in case of any reviews or improvements made it is important to inform the employees on time. ... The paper "Implementing and Managing Change within the Organization " is a good example of a literature review on management.... The paper "Implementing and Managing Change within the Organization " is a good example of a literature review on management.... literature Review on the process of managing strategic change. ...
Preview sample
ADHD Impact on Academic Performance
9 pages (2250 words) , Download 2 , Book Report/Review
Free
But from the literature review, it is obvious that until now, not many researchers have concentrated on the aspect as to why the boys are more affected than the girls.... The author of this book report "ADHD Impact on Academic Performance" casts light on the children suffering from the Attention Deficit/Hyperactivity Disorder....
Preview sample
Teaching History through Authentic Learning
9 pages (2440 words) , Download 1 , Literature review
Free
This literature review "Teaching History through Authentic Learning" presents authentic learning, which is an important shift in teaching history that combines Piaget's cognitivism, Vygotsky's Social Constructivism, and Schank et al.... The current paper has four parts: introduction, literature review, discussion and conclusion.... In the literature review, it discusses suggested authentic classroom strategies found in the literature....
Preview sample
How Does Social Media Affect Guest Behaviour in the Hotel Industry
21 pages (6661 words) , Literature review
Nobody downloaded yet
The chapter closes with a conclusion that is informed by the arguments brought out in the literature review.... The paper "How Does Social Media Affect Guest Behaviour in the Hotel Industry" states that social media is a platform that has attracted billions of users who come from diverse backgrounds....
Preview sample
Analysis of Hollywood's Movies: Ideas and Ways of Thinking about the World
12 pages (3000 words) , Download 3 , Movie Review
Free
It will be important during this analysis to consider whether these films represent a typical or atypical death penalty case as these are defined within criminal justice literature, primarily as issues pertaining to race, class, economic and other social factors come into play.... he available literature demonstrates a tendency within Hollywood to choose only those stories of death row inmates who have a sympathetic side, such as the death row inmate Stanley ‘Tookie' Williams who was recently executed in California....
Preview sample
Effective Educational Leader
21 pages (5697 words) , Literature review
Nobody downloaded yet
This literature review "Effective Educational Leader" focuses on educational leaders in a school who are setting matters.... The question that remains largely unanswered in the extant literature is whether parental engagement is one of the factors that contribute to the effectiveness of the educational leader especially in the formative years of education....
Preview sample
Economic Growth and Government Spending in Saudi Arabia
10 pages (2994 words) , Download 0 , Literature review
Free
The paper "Economic Growth and Government Spending in Saudi Arabia" is a great example of a literature review on macro and microeconomics.... A critical review of current literature on this topic will also be carried out.... In the current literature on economic growth, the fundamental question asks if an increase in the government spending can promote economic growth.... In the literature today, the statistics on government spending prove that the amount of government expenditures has escalated from 1....
Preview sample
The Role of Leadership in Nursing
4 pages (1120 words) , Download 0 , Literature review
Free
literature Review on Leadership literature Review on Leadership Introduction This current study will explore the role of leadership in nursing.... ritical review of the literature ... The paper "The Role of Leadership in Nursing" describes that a strength of Mullen et al (2011) that draws from the use of descriptive statistics is the fact that the vast amounts of data and information gathered are managed and organized with relative ease....
Preview sample
The Country of the Blind by H.G. Wells
7 pages (1995 words) , Download 2 , Book Report/Review
Free
literature Resource Center.... Cult – Cultural Studies and literature> Retrieved from> http://zenfloyd.... literature Resource Center.... When assessing the relationship between colonial power and the act of domination of one group over a lesser group he notes that, “Therefore there exists in the cultural philosophy of the colonial power a series of justifications of what domination is, what it represents and how the invaders should view their activities (Boulton 1995, p10)....
Preview sample
Social Entrepreneurship - How TOM Shoes Attract Attention from Ethical Consumers
8 pages (19 words) , Download 0 , Literature review
Free
is a good example of a literature review on marketing.... is a good example of a literature review on marketing.... The paper "Social Entrepreneurship - How TOM Shoes Attract Attention from Ethical Consumers?... Grimes, McMullen, Vogus, and Miller (2013, pp.... 60-463) stated that social entrepreneurship is the act of drawing different business techniques on both private and public companies....
Preview sample
Parental Involvement in Early Reading in Children
8 pages (2779 words) , Download 5 , Literature review
Free
There is extant literature that speaks volumes about the importance of reading in an individual's life (Cunningham, 1994).... arental Involvement in children's early reading: A literature Review Summer “It is not clear to what extent reading for enjoyment leads to higher reading literacy, or the other way round, or to what extent some other aspect of students' background contributes to both.... There is extant literature that speaks volumes about the importance of reading in an individual's life (Cunningham, 1994) (Hall, 2001)....
Preview sample
Causes of Rent Arrears in Social Housing
8 pages (2340 words) , Download 2 , Literature review
Free
The literature used in this review will be mainly found in housing journals, but some information will be found from other journals if they contain relevant information.... Using this information, the essay will uncover the main reasons why people go into arrears on their rent in social housing by finding the key themes in the literature.... Key Themes in the literature One of the main themes in the literature is that rent arrears are a really important reason for many peoples homelessness....
Preview sample
Encapsulation Efficiency of a Targeted Drug Delivery System Consisting of Herceptin-Loaded Polymers
10 pages (3467 words) , Download 0 , Literature review
Free
The "Encapsulation Efficiency of a Targeted Drug Delivery System Consisting of Herceptin-Loaded Polymers" paper contains a review of all relevant literature, conducted to establish the efficacy of trastuzumab for treating early-stage and advanced breast cancer.... .... ... ... The study entailed the modified solvent extraction and evaporation of nanoparticles of two-component biodegradable co-polymers using D-α-tocopheryl polyethylene glycol succinate (TPGS) as an emulsifier [29]....
Preview sample
The Role of Celebrity Endorsement in Marketing Communication
7 pages (2304 words) , Download 2 , Literature review
Free
This paper presents a review of the literature followed by a critical analysis and commentary on the role of celebrity endorsement in marketing communication plans and the extent to which celebrity endorsement approach has been able to attain the underlying goals of the business. ... The review of the literature reveals that from the time of 1970s to 1990s the economies in the Asia Pacific, South Asia, disintegrated Soviet Union started to undertake economic reforms that led to the process of globalization and the increase in international competition in the various sectors of business (Byrne, Whitehead and Breen, 2003, p....
Preview sample
Entrepreneurs' Skills and Traits in Small Business Organizations
15 pages (3481 words) , Download 0 , Literature review
Free
This paper "Entrepreneurs' Skills and Traits in Small Business Organizations" reviews the literature on concepts of entrepreneurship, entrepreneurs, classification of entrepreneurs, entrepreneurs' traits, entrepreneurs' skills, the difference between entrepreneurs and managers.... his chapter reviews literature on concepts of (1) entrepreneurship, (2) entrepreneurs, (3) classification of entrepreneurs, (4) entrepreneurs' traits, (5) entrepreneurs' skills, (6) difference between entrepreneurs and managers, and (7) success of small business organizations and entrepreneurs' skills and traits....
Preview sample
Summary of Matters of Life and Death - Calm Answers to Tough
8 pages (2000 words) , Download 2 , Book Report/Review
Free
Beckwith is Professor of philosophy & Church-State Studies at Baylor University.... in philosophy)and holds several other degrees.... From the paper "Summary of Matters of Life and Death - Calm Answers to Tough" it is clear that the purpose of the authors, as evident in various chapters of the book is to kindle spirituality and spread it....
Preview sample
A Metabolic Disorder Posing Serious Threat Worldwide
11 pages (2750 words) , Download 3 , Literature review
Free
This paper aims to review existing clinical studies and literature involving the use of pregabalin and gabapentin in the treatment of diabetic neuropathy.... his paper aims to review existing clinical studies and literature involving the use of pregabalin and gabapentin in the treatment of diabetic neuropathy in order to assess their efficacy.... eview of literature ... 1,28 Both drugs are well tolerated by the patients and in all the literature reviewed for this specific paper, gabapentin and pregabalin are labeled safe for use. ...
Preview sample
Psychoneuroendocrinology: the Story of Depression
5 pages (2081 words) , Download 0 , Literature review
Free
MAJOR DEPRESSIVE DISORDER (DEPRESSION literature REVIEW By ……… …….... or the approach of the subject “Major Depressive Disorder: literature review” the sources of information that were used consisted of medical databases on the internet, that are highly reputed for containing original and up-to-date research articles on various fields of modern medicine. ... he keywords used for database search were relevant to the demands of the literature review paper and included “depression and diagnosis”, “depression and assessment”, “depression and treatment”, “depression and outcomes”....
Preview sample
Wearable Devices in Healthcare
14 pages (4308 words) , Download 2 , Literature review
Free
Systems, Man, and Cybernetics, Part C: Applications and reviews, IEEE Transactions, Volume:40 ,  Issue: 1 .... This literature review "Wearable Devices in Healthcare" attempts to collate existing data about the trend, its future possibilities as well as the challenges the medical sector will face in trying to adopt these wearable systems for effective and efficient patient care.... ?The following literature review will attempt to collate existing data about the trend, its future possibilities as well as the challenges the medical sector will face in trying to adopt these wearable systems for effective and efficient patient care....
Preview sample
The Experiences of Oncology Nurses
9 pages (2544 words) , Download 0 , Literature review
Free
The paper "The Experiences of Oncology Nurses" is a good example of a literature review on nursing.... The paper "The Experiences of Oncology Nurses" is a good example of a literature review on nursing.... The researchers' literature review indicated that patients do not reap the full benefits of care because of the gap that exist between what is practiced and what research shows (Institute of Medicine, 2001).... The researchers' literature review led to the conclusions that although infrastructures that support EBP have been implemented, there have not been any intervention studies that evaluate the process of the outcomes of these infrastructures that support EBP....
Preview sample
Impact of Culture on Change
5 pages (27 words) , Download 0 , Literature review
Free
This literature review "Impact of Culture on Change" examines the effect of organizational culture on change initiatives.... The literature review shall identify methods under which change agents build an organizational culture that is change-friendly.... ... ... ...
Preview sample
Invisible Details in Black Swan by Aronofsky
1 pages (284 words) , Download 2 , Movie Review
Free
The movie review "Invisible Details in Black Swan by Aronofsky" states that having viewed the film, it was difficult not to interject with the reviews made by the critics of 'Black Swan' (Aronofsky, 2010).... Both reviews were similar in the sense that they both carried sarcastic tones in the reviews.... These two reviews also made reference to 'The Red Shoes' which was an earlier ballet film.... However, these two reviews had opposite things to say in terms of the quality of the film....
Preview sample
Non-Invasive Ventilation
24 pages (7822 words) , Download 4 , Literature review
This literature review "Non-Invasive Ventilation" is about the chronic obstructive pulmonary disease is among the leading global causes of chronic morbidity.... The airflow limitation is usually both progressive and associated with an abnormal; the inflammatory response of the lungs to noxious particles....
Preview sample
The Theme of Madness
10 pages (2669 words) , Download 3 , Literature review
Free
urphy may not be part of what critics consider Beckett's best works, the works that brought him fame and the Nobel Prize in literature, but it is important to consider in the canon of his work.... ccording to Foucault, Descartes sought to eliminate madness from philosophy.... For Beckett, the schizophrenia of the mental patients in Murphy parallels the schizophrenia in Cartesian philosophy.... Beckett's biographer, James Knowlson, states that whole sections of the novel were influenced by Beckett's readings in psychoanalysis, psychology, and philosophy (206)....
Preview sample
Plant of an Engineering Company Thats Losing Money
5 pages (1406 words) , Download 2 , Literature review
Free
Review of literature: ways to handle problems in short term and long term A review of the literature provides the ways to handle problems in the engineering plant in the short term and long term considering the situational problems due to which the company has been facing major difficulties in its operation with the internal and external stakeholders.... The literature review suggests that every engineering plant faces the challenge of maintaining its equipments and machineries with time as they grow older....
Preview sample
Advertising of Binge Drinking
10 pages (2800 words) , Download 0 , Literature review
Free
The literature points, to evidence showing that where regulations and the law are abundant and are enforced, that young people have more hurdles to cross and therefore are less prone to abusing alcohol.... literature Review III.... Executive SummaryThe academic and scientific literature provide ample statistics, data and arguments to show that binge drinking is a large and intractable problem among young people between the ages of 18 and 24.... The literature notes that young people are especially vulnerable, given that their developmental struggles are amplified by a recourse to binge drinking and alcohol, and given that young people especially in college have been shown to habitually, and consistently through time, engage in binge drinking to the degree that a large proportion of the population become dependents....
Preview sample
The Prevalence of Obesity in Saudi Adolescents
7 pages (2572 words) , Download 0 , Literature review
Free
im of This Narrative literature Review ... he aim of this narrative literature review is to investigate the prevalence of obesity in the Saudi adolescent population, identify the causal factors and associated risks and develop recommendations on how such life-threatening health issues can be prevented. ... ource: Database; organisational website; grey literature or information produced by government, academics, business, and industry in print or electronic formats not controlled by commercial publishing....
Preview sample
Fluid Resuscitation, Treatment of Envenomation, Recognition of Major Injuries in Elder Trauma Patients
9 pages (2798 words) , Download 0 , Literature review
Free
Cochrane Database of Systematic reviews, 28(2), 1-59.... The paper 'Fluid Resuscitation, Treatment of Envenomation, Recognition of Major Injuries in Elder Trauma Patients' is a meaningful illustration of a literature review on nursing.... The paper 'Fluid Resuscitation, Treatment of Envenomation, Recognition of Major Injuries in Elder Trauma Patients' is a meaningful illustration of a literature review on nursing.... literature Review Questions ...
Preview sample
1901 - 1950 results of 10518 items
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Contact Us