Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (7845)
- Law (5878)
- Arts and Humanities (4475)
- Medicine and Health Sciences (3664)
- Education (3593)
-
- Physical Sciences and Mathematics (3471)
- Life Sciences (2725)
- Engineering (2160)
- Business (2113)
- Communication (1454)
- Library and Information Science (1343)
- Sociology (1256)
- History (1121)
- Psychology (1058)
- Religion (888)
- Medical Specialties (860)
- Computer Sciences (808)
- Public Affairs, Public Policy and Public Administration (801)
- Higher Education (781)
- Public Health (677)
- Economics (668)
- Journalism Studies (647)
- Environmental Sciences (567)
- International Law (554)
- Biology (527)
- Electrical and Computer Engineering (503)
- Political Science (493)
- Physics (477)
- Educational Administration and Supervision (471)
- Teacher Education and Professional Development (461)
- Institution
-
- University of Nebraska - Lincoln (1862)
- Purdue University (1269)
- Ateneo de Manila University (1135)
- Brigham Young University (954)
- St. John's University School of Law (850)
-
- University of South Florida (822)
- University of Nevada, Las Vegas (664)
- Singapore Management University (627)
- Pepperdine University (608)
- San Jose State University (563)
- Utah State University (560)
- Louisiana State University (559)
- University of Mississippi (531)
- University of Malaya (520)
- Eastern Illinois University (515)
- Notre Dame Law School (502)
- Western Kentucky University (499)
- Edith Cowan University (467)
- Missouri University of Science and Technology (464)
- University of Kentucky (461)
- California Polytechnic State University, San Luis Obispo (426)
- University of Central Florida (422)
- Nova Southeastern University (419)
- Technological University Dublin (412)
- University of Arkansas, Fayetteville (381)
- TÜBİTAK (374)
- Wayne State University (374)
- Georgia Southern University (351)
- Clemson University (350)
- Old Dominion University (349)
- Keyword
-
- Education (402)
- Humans (321)
- Newspaper (257)
- United States (255)
- EIU (233)
-
- 2012 (219)
- Newsletter (192)
- Student newspaper (186)
- History (184)
- Female (183)
- Higher education (178)
- Male (177)
- Gender (162)
- Women (160)
- Eastern Illinois University (148)
- Daily Eastern News (143)
- Communication (142)
- English (135)
- News Releases (131)
- Journal (128)
- Journalism (127)
- Technology (121)
- Animals (120)
- Leadership (119)
- Syllabus, syllabi, journalism, communication, media, strategic media (119)
- Climate change (116)
- Children (115)
- Ethics (113)
- Research (113)
- China (109)
- Publication
-
- Philippine Studies: Historical and Ethnographic Viewpoints (1116)
- Faculty Publications (872)
- Theses and Dissertations (734)
- Journal of Civil Rights and Economic Development (641)
- Faculty Scholarship (437)
-
- Notre Dame Journal of Law, Ethics & Public Policy (431)
- Research Publications (2011 to 2015) (350)
- Electronic Theses and Dissertations (343)
- Articles (336)
- International Congress on Environmental Modelling and Software (292)
- Research outputs 2012 (271)
- Open Access Publications (259)
- Proceedings of the IATUL Conferences (248)
- Dissertations (245)
- UNLV Gaming Research & Review Journal (240)
- Publications and Research (233)
- Honors Theses (226)
- Saudi Medical Journal (226)
- Journal of Extension (217)
- University of Mississippi News (204)
- Pepperdine Dispute Resolution Law Journal (199)
- St. John's Law Review (197)
- International Journal of Exercise Science: Conference Proceedings (186)
- Leaven (185)
- Library Philosophy and Practice (e-journal) (184)
- Research Collection School Of Computing and Information Systems (184)
- Against the Grain (174)
- Publications (160)
- Student Works (2010-2019) (159)
- Master's Theses (147)
- Publication Type
- File Type
Articles 47251 - 47280 of 47405
Full-Text Articles in Entire DC Network
The Federal Reserve As Last Resort, Colleen M. Baker
The Federal Reserve As Last Resort, Colleen M. Baker
Journal Articles
The Federal Reserve, the central bank of the United States, is one of the most important and powerful institutions in the world. Surprisingly, legal scholarship hardly pays any attention to the Federal Reserve or to the law structuring and governing its legal authority. This is especially curious given the amount of legal scholarship focused on administrative agencies that do not have anywhere near as critical a domestic and international role as that of the Federal Reserve. At the core of what the Federal Reserve does and should do is to conduct monetary policy so as to safeguard pricing, including that …
Chinese Guanxi And Anglo-American Networking: A Comparative Investigation Of Cross-Cultural Interpersonal Business Relationships, Kevin D. Lo
Organization, Leadership, and Communication
Both Chinese and Anglo-American cultures highlight the importance of interpersonal relationships for successful business. In Chinese and Anglo-American culture respectively, guanxi and networking are linguistic equivalents. However, cross-culturally there are emic differences, particularly of Chinese guanxi, which are not captured by these linguistic equivalencies. As such, Chinese guanxi remain somewhat mysterious to a non-Chinese audience. This study explores the differences between Chinese guanxi and Anglo-American networking through a process of semi-structured interviews with n=10 individuals familiar with both cultural contexts. The data indicate three major themes for Chinese guanxi: a heavy emphasis on reciprocity, a long-term orientation, and culture specific …
The Man On The Flying Trapeze, Barry Cushman
The Man On The Flying Trapeze, Barry Cushman
Journal Articles
Any history of the controversy over President Franklin D. Roosevelt's Court-packing plan sets out to answer three principal questions. The first is how best to tell what I will call the political story: how to understand the political trajectory of the Plan from its initial conceptualization to its ultimate failure. The second is how best to tell what I will call the legal story: how to understand the constitutional landscape that confronted New Deal reformers, how they negotiated it, and how and in what respects the Supreme Court transformed that body of constitutional law during the Great Depression. The third …
Correlates Of Morbidity And Mortality In Severe Necrotizing Pancreatitis, K. M. Pal, Pashtoon Murtaza Kasi, Mohammad Tayyeb, S. M. Faisal Mosharraf, Zafar Fatmi
Correlates Of Morbidity And Mortality In Severe Necrotizing Pancreatitis, K. M. Pal, Pashtoon Murtaza Kasi, Mohammad Tayyeb, S. M. Faisal Mosharraf, Zafar Fatmi
Community Health Sciences
Acute severe pancreatitis is associated with a high morbidity and mortality and frequently is accompanied by underlying pancreatic parenchymal necrosis. Patients with pancreatic necrosis must be identified, because the morbidity and mortality rate in this subgroup is much higher. Our objective was to compare the clinical outcomes of these patients based on the degree of pancreatic necrosis. A total of 35 patients were noted to have pancreatic necrosis. These were divided into 2 groups based on extent of necrosis: group A had less than 50% necrosis and group B had more than 50% necrosis. The rate of mortality (5% versus …
Do We Have A Debt Collection Crisis? Some Cautionary Tales Of Debt Collection In Indiana, Judith Fox
Do We Have A Debt Collection Crisis? Some Cautionary Tales Of Debt Collection In Indiana, Judith Fox
Journal Articles
The Federal Trade Commission, in 2009, raised issues about debt collection practices and called on jurisdictions to investigate local practices that may be abusive to consumers. This article is the beginning of a larger study of debt collection practices in Indiana. It examines debt collection cases filed in Indiana courts in a three month period of 2009 and 2011 While most research on this issues has been in small claims court systems, this article suggests that the same, if not greater, consumer abuses exist in other courts. The research shows a pattern of large, national debt collection firms moving away …
Cyber Security Without Cyber War, Mary Ellen O'Connell
Cyber Security Without Cyber War, Mary Ellen O'Connell
Journal Articles
Which government agency should have primary responsibility for the Internet? The USA seems to have decided this question in favour of the military—the US military today has the largest concentration of expertise and legal authority with respect to cyberspace. Those in the legal community who support this development are divided as to the appropriate legal rules to guide the military in its oversight of the Internet. Specialists on the international law on the use of force argue that with analogy and interpretation, current international law can be applied in a way that allows great freedom without sending the message that …
Overcoming Overcriminalization, Stephen F. Smith
Overcoming Overcriminalization, Stephen F. Smith
Journal Articles
The literature treats overcriminalization (and, at the federal level, the federalization of crime) as a quantitative problem. Legislatures, on this view, have simply enacted too many crimes, and those crimes are far too broad in scope. This Article uses federal criminal law as a basis for challenging this way of conceptualizing the overcriminalization problem. The real problem with overcriminalization is qualitative, not quantitative: federal crimes are poorly defined, and courts all too often expansively construe poorly defined crimes. Courts thus are not passive victims in the vicious cycle of overcriminalization. Rather, by repeatedly interpreting criminal statutes broadly, courts have taken …
Child Support Guidelines And Divorce Incentives, Margaret F. Brinig, Douglas W. Allen
Child Support Guidelines And Divorce Incentives, Margaret F. Brinig, Douglas W. Allen
Journal Articles
A child support guideline is a formula used to calculate support payments based on a few family characteristics. Guidelines began replacing court awarded support payments in the late 1970s and early 1980s, and were eventually mandated by the federal government in 1988. Two fundamentally different types of guidelines are used: percentage of obligor income, and income shares models. This paper explores the incentives to divorce under the two schemes, and uses the NLSY data set to test the key predictions. We find that percentage of obligor income models are destabilizing for some families with high incomes. This may explain why …
Explaining Abuse Of The Disabled Child, Margaret F. Brinig
Explaining Abuse Of The Disabled Child, Margaret F. Brinig
Journal Articles
This article discusses abuse of disabled children in terms of two competing theories for why it may occur. The evolutionary biology theory has been discussed in the legal literature as well as in biological and social science pieces. The author contrasts this theory with a novel one, mimetic desire, which may be less familiar in legal circles, but which, he believes, better explains the abuse of Attention Deficit Hyperactive Disorder children and offers more hope for preventing abuse without disrupting intact families. While the evolutionary biology explanations for child abuse may be helpful and important, more territory can be covered …
Not So Special After All: How Mayo Granted The Treasury Unfettered Rule-Making Discretion, Daniel W. Graves
Not So Special After All: How Mayo Granted The Treasury Unfettered Rule-Making Discretion, Daniel W. Graves
Missouri Law Review
On January 11, 2011, the Supreme Court decided Mayo Foundation for Medical Education and Research v. United States, in which it definitively settled on the more deferential Chevron standard for analyzing Treasury Department regulations, finding no justification in treating them differently from regulations of other agencies. In doing so, the Court has given the Treasury Department virtually free rein in crafting new regulations and amending those regulations already in existence. Because taxpayer lawsuits were one of the few ways in which Treasury regulations could be overturned, by instructing the lower to give such regulations the heightened degree of deference that …
Implementation Of A One-To-One Ipod Touch Program In A Middle School, Helen Crompton, Julie Keane
Implementation Of A One-To-One Ipod Touch Program In A Middle School, Helen Crompton, Julie Keane
Teaching & Learning Faculty Publications
The purpose of this study is to investigate the implementation of a whole school one-to-one iPod Touch project in a middle school in the southeastern United States. While some focused studies have been undertaken in this new field of learning, there has been little research to date that documents activity within a whole school implementation (Chen, Kao, & Sheu, 2003; Conti-Ramsden, Durkin, & Simkin, 2010). Using Rogers' (1963, 2003) theory of diffusion of innovation as a lens for this research, we gathered data from observations, focus groups, and interviews. Our findings indicated that teachers focused on internet-based research activities, formative …
Using Blogs To Promote Literary Response During Professional Development, Jaime Colwell, Amy Hutchison, David Reinking
Using Blogs To Promote Literary Response During Professional Development, Jaime Colwell, Amy Hutchison, David Reinking
Teaching & Learning Faculty Publications
(First paragraph) The blogging has, I don’t want to say forced, but kind of made me read books that I haven’t necessarily read before, and I don’t think I would have. I’ve read lots of children’s books just through student teaching and everything, but it makes me look outside the box and maybe at other genres that I wouldn’t look at necessarily. (Sam, a pre-service teacher, blogging in a children’s literature course)
Biological Treatment Of Leachates Of Microaerobic Fermentation, Manar Arica Alattar
Biological Treatment Of Leachates Of Microaerobic Fermentation, Manar Arica Alattar
Dissertations and Theses
Microaerobic fermentation (MF) is a process of controlled degradation of organic waste material that occurs in enclosed fermentors under micro-aerobic conditions at near-room temperature. MF processing of vegetal materials progresses to endpoints in about 2-5 weeks. During MF processing, an acidic leachate rich in organic acids and alcohols is produced. The research presented in this thesis focuses on the efficiency of MF pre-processing of feedstock containing fibrous lignocellulosic (FLC) materials; efficiency of microbial and insect larvae-based treatments of MF leachate; tolerance of the Black Soldier fly larvae (BSFL) to various biological inhibitors common in leachate; and effectiveness of using MF …
Relative Heart Ventricle Mass And Cardiac Performance In Amphibians, Gregory Joseph Kluthe
Relative Heart Ventricle Mass And Cardiac Performance In Amphibians, Gregory Joseph Kluthe
Dissertations and Theses
This study used an in situ heart preparation to analyze the power and work of spontaneously beating hearts of four anurans (R. marina, L. catesbeianus, X. laevis, P. edulis) and three urodeles (N. maculosus, A. tigrinum, A. tridactylum) in order to elucidate the meaning of relative ventricle mass (RVM) in terms of specific cardiac performance variables. This study also tests two hypotheses: 1) the ventricles of terrestrial species (R. marina, P. edulis, A. tigrinum) of amphibians are capable of greater maximum power outputs (Pmax) compared to aquatic species (X. laevis, A. tridactylum, N. maculosus, L. catesbeianus) and, 2) …
A Systems Approach To Ecological Economic Models Developed Progressively In Three Interwoven Articles, Takuro Uehara
A Systems Approach To Ecological Economic Models Developed Progressively In Three Interwoven Articles, Takuro Uehara
Dissertations and Theses
My dissertation develops and analyzes ecological economic models to study the complex dynamics of an ecological economic system (EES) and investigate various conditions and measures which can sustain a developing economy over the long term in view of resilience and sustainability. Because of the intrinsic complexity of the system, I take a systems approach, using economics as the foundation for the basic structure of an ecological economic model, and system dynamics as the method to build and analyze such a complex ecological economic model. Throughout my dissertation, the model developed by Brander and Taylor (1998) is adopted as a baseline …
Sustainability Education As A Framework For Enhancing Environmental Stewardship In Young Leaders: An Intervention At Tryon Creek Nature Day Camp, Andrea Nicole Lawrence
Sustainability Education As A Framework For Enhancing Environmental Stewardship In Young Leaders: An Intervention At Tryon Creek Nature Day Camp, Andrea Nicole Lawrence
Dissertations and Theses
UNESCO established Sustainability Education as a top priority when it declared 2005 - 2014 to be the global decade for sustainability. Sustainability education can be implemented in outdoor programs such as nature summer camps in order to build environmental stewardship and ecological literacy in counselors and campers. This study sought to determine the extent to which an ecology and leadership training given to assistant counselors at Tryon Creek State Natural Area day camp achieved the goals of sustainability education--for the assistant counselors to learn about ecology, develop stewardship attitudes and behaviors toward the environment, and become positive role models for …
Increasing Social Work Students' Political Interest And Efficacy: The Experience And Impact Of A Social Welfare Policy Course From The Students' Perspective, Christie Dianne Bernklau Halvor
Increasing Social Work Students' Political Interest And Efficacy: The Experience And Impact Of A Social Welfare Policy Course From The Students' Perspective, Christie Dianne Bernklau Halvor
Dissertations and Theses
Students of accredited social work programs are expected to demonstrate ten core competencies, including the ability to "engage in policy practice to advance social and economic well-being and to deliver effective social work services" (Council on Social Work Education, 2008). Despite this expectation, almost half of licensed social workers surveyed disagreed with the notion that they were adequately prepared for political engagement by their social work education (Ritter, 2007). Because social welfare policy courses are the primary curricular means for preparing generalist social workers for political advocacy, this study explores how undergraduate students respond to social welfare policy instructors' efforts …
Metabolic Support Of Anaerobiosis In Embryos Of The Annual Killifish Austrofundulus Limnaeus, Andrew Mccracken
Metabolic Support Of Anaerobiosis In Embryos Of The Annual Killifish Austrofundulus Limnaeus, Andrew Mccracken
Dissertations and Theses
Embryos of the annual killifish Austrofundulus limnaeus display a remarkable tolerance to anoxia during development, most notably during embryonic diapause. Little is known about the metabolic or enzymatic changes that accompany this state of anoxia tolerance. This study examined the metabolic changes associated with exposure to anoxia by measuring the activity of the enzyme phosphoenolpyruvate carboxykinase (PEPCK), and by profiling the concentration of 31 metabolites ranging from amino acids to citric cycle intermediates at 4 different developmental stages, diapause 2 (DII), 4 days post diapause (dpd), 12 and 22 dpd. Embryos of A. limnaeus showed stage specific changes in concentrations …
Coping With Interpersonal Conflicts At Work: An Examination Of The Goodness Of Fit Hypothesis Among Nurses, Robert Randon Wright
Coping With Interpersonal Conflicts At Work: An Examination Of The Goodness Of Fit Hypothesis Among Nurses, Robert Randon Wright
Dissertations and Theses
Increasingly, evidence indicates that workplace interpersonal conflicts (WIC) are the most upsetting/troublesome daily work stressors (Sulsky & Smith, 2007), and within the context of nursing, WIC is a problem of high prevalence and intensity (Baltimore, 2006; Farrell, 1999). In relation to coping with stressors such as WIC, Lazarus and Folkman (1984) established the transactional model of stress and coping, where cognitive appraisals of the stressor (e.g., perceived control) are central to coping and classified all coping behaviors as either problem-focused or emotion-focused. They also proposed the "goodness of fit hypothesis", which predicts that problem-focused coping efforts used to cope with …
Catholic Schools And Broken Windows, Nicole Stelle Garnett
Catholic Schools And Broken Windows, Nicole Stelle Garnett
Journal Articles
Our previous work has suggested that the closure of Catholic elementary schools generates disorder and suppresses social cohesion in urban neighborhoods-findings that support the conclusion that Catholic elementary schools create neighborhood social capital. We extend our inquiry here by asking if Catholic school closures might also affect crime rates. Using factors independent from neighborhood indicators, specifically school and parish leadership characteristics, we created an exogenous factor that predicted which Catholic schools might close in urban Chicago, and used that factor, with sociodemographic variables, to predict police-beat-level crime rates. We find that Catholic school closures slow the rate of decline of …
Isoflurane Enhances The Moonlighting Activity Of Gapdh: Implications For Gabaa Receptor Trafficking, Andrew J. Montalbano, Christopher S. Theisen, Eugene E. Fibuch, Norbert W. Seidler
Isoflurane Enhances The Moonlighting Activity Of Gapdh: Implications For Gabaa Receptor Trafficking, Andrew J. Montalbano, Christopher S. Theisen, Eugene E. Fibuch, Norbert W. Seidler
Faculty and Staff Publications
GABAA receptor activity is directly modulated by glyceraldehyde 3-phosphate dehydrogenase (GAPDH), a protein with many nonglycolytic moonlighting functions. In addition to playing a role in the phosphorylation of the receptor, GAPDH may also participate in proper receptor trafficking to the plasma membrane. We previously showed that volatile anesthetics affect GAPDH structure and function that may contribute to the manner by which GAPDH modulates the GABAA receptor. In the current study, GAPDH interacted with engineered phospholipid-containing vesicles, preferring association with phosphatidylserine over phosphatidylcholine. Phosphatidyl-serine is known to participate in membrane trafficking of transport proteins and to play a role …
Practical Legal And Ethical Considerations For The Provision Of Acute Disaster Mental Health Services, Mike Jenuwine, John A. Call, Betty Pfefferbaum, Brian W. Flynn
Practical Legal And Ethical Considerations For The Provision Of Acute Disaster Mental Health Services, Mike Jenuwine, John A. Call, Betty Pfefferbaum, Brian W. Flynn
Journal Articles
Mental health professionals who provide emergency psychosocial assistance in the immediate aftermath of disasters do so in the midst of crisis and chaos. Common roles undertaken by disaster mental health professionals include treating existing conditions of disaster survivors and providing psychosocial support to front line responders and those acutely affected. Other roles include participating in multidisciplinary health care teams as well as monitoring and supporting team members’ mental health. When, in the immediate aftermath of a disaster, mental health professionals provide such assistance, they may take on legal and ethical responsibilities that they are not fully aware of or do …
Editorial: International Journal Of Critical Infrastructures, Holly Ann Heine Handley, C. Ariel Pinto, Adrian V. Gheorghe
Editorial: International Journal Of Critical Infrastructures, Holly Ann Heine Handley, C. Ariel Pinto, Adrian V. Gheorghe
Engineering Management & Systems Engineering Faculty Publications
(First paragraph) This special issue of the International Journal of Critical Infrastructures is a compilation of the papers presented at the Fourth Annual Conference on Next Generation Infrastructures held in Virginia Beach, Virginia, in November, 2011. This conference was sponsored by Old Dominion University, Norfolk, Virginia, USA and by the Next Generation Infrastructures Foundation, Delft, The Netherlands. The participants travelled from around the globe to converse about ideas that address both concerns for the present and optimism for the future of critical infrastructures. The conference, held in the USA for the first time, provided a platform for vibrant discussions on …
The Value Of Modeling And Simulation Standards, Andrew J. Collins, David Meyr, Solomon Sherfey, Andreas Tolk, Mikel Petty
The Value Of Modeling And Simulation Standards, Andrew J. Collins, David Meyr, Solomon Sherfey, Andreas Tolk, Mikel Petty
VMASC Publications
In the current economic climate, there is a requirement to justify all government spending by demonstrating the added-value that the expenditure gives. Modeling and Simulation (M&S) community is not exempted from this rule. This paper focuses on attempts to value standards and demonstrates that even though a myriad of different standards exist in the United States today, no one has "cracked the nut" on determining their value. This does not mean that standards are without value. The paper highlights their importance to our society and human development as a whole. Thus if we cannot give a value to M&S standards, …
On Critical Infrastructure Interdependency, Polinpapilinho F. Katina, C. Ariel Pinto
On Critical Infrastructure Interdependency, Polinpapilinho F. Katina, C. Ariel Pinto
Engineering Management & Systems Engineering Faculty Publications
Developing effective protection, mitigation, and recovery measures for critical infrastructure (CI) systems is paramount in the wake of increasing natural and manmade hazards, risks, and threats. Influencing protection, rescue, and recovery measures are interplays (i.e., interdependencies) among infrastructure systems. Understanding interdependencies plays an essential role in minimizing and reducing cascading failures among complex interdependent infrastructure systems. This paper asserts that deployment of protection, mitigation, and recovery solutions can have little effect on infrastructure management if infrastructure operators and policymakers have partial understanding of infrastructure interdependencies. Using narrative research, authors illustrate that effective coordination and response for protection, mitigation, and recovery …
Prisons, Poverty And Power, Daria Roithmayr
Google, Gadgets, And Guilt: Juror Misconduct In The Digital Age, Thaddeus Hoffmeister
Google, Gadgets, And Guilt: Juror Misconduct In The Digital Age, Thaddeus Hoffmeister
University of Colorado Law Review
This Article begins by examining the traditional reasons for juror research. The Article then discusses how the Digital Age has created new rationales for juror research while simultaneously affording jurors greater opportunities to conduct such research. Next, the Article examines how technology has also altered juror-to-juror communications and juror-to-non-juror communications. Part I concludes by analyzing the reasons jurors violate court rules about discussing the case. In Part II, the Article explores possible steps to limit the negative impact of the Digital Age on juror research and communications. While no single solution or panacea exists for these problems, this Article focuses …
Different Names For The Same Thing: Domestic Homicides And Dowry Deaths In The Western Media, Jennifer Parker
Different Names For The Same Thing: Domestic Homicides And Dowry Deaths In The Western Media, Jennifer Parker
University of Colorado Law Review
Domestic violence is a global phenomenon that knows no geographic or cultural bounds. Whether they are shot, poisoned, stabbed, or burned, women across the world are dying at the hands of their male partners. Nevertheless, the Western media's portrayal of dowry deaths in India illustrates American society's failure to, or refusal to, connect dowry deaths to the parallel domestic homicides committed in the United States every day. From a postcolonial feminist standpoint, this Note argues that this disjunction is neither accidental nor inconsequential but rather reinforces the United States' hegemonic self-perception as a society in which women's liberation has been …
Reading Over Your Shoulder: Social Readers And Privacy Law, Margot Kaminski
Reading Over Your Shoulder: Social Readers And Privacy Law, Margot Kaminski
Publications
No abstract provided.
The Water Marketing Solution, Mark Squillace