, but this code // executes before the first paint, when

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is not yet present. The // classes are added to so styling immediately reflects the current // toolbar state. The classes are removed after the toolbar completes // initialization. const classesToAdd = ['toolbar-loading', 'toolbar-anti-flicker']; if (toolbarState) { const { orientation, hasActiveTab, isFixed, activeTray, activeTabId, isOriented, userButtonMinWidth } = toolbarState; classesToAdd.push( orientation ? `toolbar-` + orientation + `` : 'toolbar-horizontal', ); if (hasActiveTab !== false) { classesToAdd.push('toolbar-tray-open'); } if (isFixed) { classesToAdd.push('toolbar-fixed'); } if (isOriented) { classesToAdd.push('toolbar-oriented'); } if (activeTray) { // These styles are added so the active tab/tray styles are present // immediately instead of "flickering" on as the toolbar initializes. In // instances where a tray is lazy loaded, these styles facilitate the // lazy loaded tray appearing gracefully and without reflow. const styleContent = ` .toolbar-loading #` + activeTabId + ` { background-image: linear-gradient(rgba(255, 255, 255, 0.25) 20%, transparent 200%); } .toolbar-loading #` + activeTabId + `-tray { display: block; box-shadow: -1px 0 5px 2px rgb(0 0 0 / 33%); border-right: 1px solid #aaa; background-color: #f5f5f5; z-index: 0; } .toolbar-loading.toolbar-vertical.toolbar-tray-open #` + activeTabId + `-tray { width: 15rem; height: 100vh; } .toolbar-loading.toolbar-horizontal :not(#` + activeTray + `) > .toolbar-lining {opacity: 0}`; const style = document.createElement('style'); style.textContent = styleContent; style.setAttribute('data-toolbar-anti-flicker-loading', true); document.querySelector('head').appendChild(style); if (userButtonMinWidth) { const userButtonStyle = document.createElement('style'); userButtonStyle.textContent = `#toolbar-item-user {min-width: ` + userButtonMinWidth +`px;}` document.querySelector('head').appendChild(userButtonStyle); } } } document.querySelector('html').classList.add(...classesToAdd); })(); Albert Boerema | 黄大仙高手论坛

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Dr. Albert Boerema

Professor

Biography

Albert Boerema combines a wealth of K-12 experience with innovative expertise in the field of educational leadership. Beginning his career as a science and math teacher at a small Christian high school in Canada, he quickly established himself as a leader, and served as the principal of the school for eighteen years. After earning a PhD in leadership, policy, and organizations at Vanderbilt University鈥檚 renowned Peabody School of Education, he now is the resident expert in the field of educational leadership at Calvin College. He combines an active research agenda with strong teaching, where each informs the other.

His research interests include leadership development and school change, and he has published numerous articles in this area. Not content to train future principals and other leaders merely in the expertise of administrative management, his passion lies in helping leaders to forge an approach to leadership that is visionary and rooted in their own ethical frames and religious traditions. His strength is helping future leaders develop frames of thinking that allow them to navigate institutional limitations while capitalizing on collaborative opportunities to move such institutions through change as they meet the challenges of the 21st century.

Education

  • MA, Royal Roads, 1999
  • PhD, Vanderbilt University, 2005
  • Educational leadership advisor

Professional Services

  • Column Editor, Panel.Edu, Christian Educators Journal, 2006-present.
  • Reviewer, Journal of Leadership and Organizational Studies, 2010.
  • Proposal Reviewer, University Council for Educational Administration.

Memberships

  • Board Member, International Community of Christian Teacher Educators.